TW200821618A - Filter for plasma displayer - Google Patents

Abstract

A filter for plasma displayer which a surface waviness structure is formed on the top surface of visible side, wherein the center line average roughness Ra of the top surface of visible side is 15 to 100 μm, 10 points average roughness Rz of the top surface of visible side is 50 to 100 μm, and the width of surface waviness is 1 to 100 μm, the length of the surface waviness is 1 to 500 μm, and the surface waviness occupancy is 60 to 100%. Provided is a filter for plasma displayer which has excellent transparent image visibility and also has excellent effect for reducing reflected image.

Description

200821618 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a filter for plasma display. More specifically, it relates to a filter for plasma display which has excellent transmission image sharpness and excellent image reflection prevention. [Prior Art] A plasma display panel (hereinafter referred to as "PDP") is provided with a filter on the front side to improve the function of the PDP. The necessary functions of the filter for PDP are as follows: (1) imparting mechanical strength to the PDP body (panel) made of thin film glass, (2) shielding electromagnetic waves emitted from the PDP, and (3) shielding infrared rays emitted from the PDP. (4) Preventing reflection of external light, (5) Correcting color tone, and the like. The PDP filters mounted on the PDPs currently marketed are formed by laminating a plurality of layers having the functions (1) to (5) described above. Specifically, a transparent substrate such as glass is used to impart mechanical strength, an infrared absorbing film is used to shield infrared rays, a reflection preventing film is used to prevent reflection of external light, and a coloring material having absorption in a visible light region is used. The layer is used to correct the hue. # PDP The required performance is stricter year by year, and the filter for PDP is gradually more demanding. Among them, in order to further improve the image quality characteristics, the requirements for high contrast, suppression of interference fringes, and reduction of fluorescent lamps and the like on the surface of the PDP are gradually increasing. For example, there is disclosed a technique (Patent Document 1) in which an antireflection layer is provided on both sides of a front filter for mitigating reflection. Further, a technique (Patent Documents 2 and 3) is disclosed in which a light diffusion layer having a concave-convex structure is provided on the surface of the filter to make the contour of the image to be unclear, to reduce the reflection and suppress the interference fringe. The production. Further, 200821618 discloses a technique (Patent Documents 4 and 5) for suppressing reflection from the panel surface and reflection from the back surface of the filter by directly bonding the filter to the PDP panel. [Patent Document 1] JP-A-2000- 1 56 1 82 pp. Patent Document 2: JP-A-200-1-28 1 4 1 1 Patent Document 3: JP-A-2004- 1 26495 Patent Document 4: Special Opening 2005 - [Problem to be Solved by the Invention] However, in the technique of Patent Document 1, since the antireflection function is insufficient, it is not expected to sufficiently reduce the map. Like the reflection effect. Further, in the techniques of Patent Documents 2 and 3, although the characteristics of the reflection are improved, the diffusedness of the transmitted light is high, and the sharpness (transparency of the transmitted image) of the PDP screen-mapped image is deteriorated. On the contrary, even if the transmission image is excellent in sharpness, there is a case where the reflection is not necessarily good. # Moreover, the techniques for reducing the image reflection of the techniques of Patent Documents 4 and 5 are not sufficient. In view of the above-mentioned problems of the prior art, the present invention is a calender sheet for plasma display which is excellent in transmission image and excellent in image reflection reducing effect (hereinafter referred to as anti-reflection). - Means for Solving the Problem In order to solve the above problems, the filter for plasma display of the present invention has the following configuration. That is, the filter for plasma display of the present invention has a center line average roughness Ra 200821618 of 15 to 100 nm on the outermost surface of the observation side and a maximum surface roughness of 10 to 100 nm on the observation side. Surface corrugated structure having a degree Rz of 50 to 1000 nm and a surface waviness of 1 to 1 μm, a surface corrugation length of 1 to 5 μm, and a surface corrugation occupation ratio of 60 to 100% . Further, the plasma display filter has a configuration in which a plurality of functional layers are laminated, and has a corrugation width of 1 to 100 μm and a corrugation length of 1 to 5 0 0 at one or more interfaces. The micron, corrugated height is 〇· 〇5~3.0 micron, and the corrugation occupation ratio is 60~100%. Further, the plasma display of the present invention is obtained by mounting the above-described filter for plasma display on the display surface of the plasma display panel. Advantageous Effects of Invention According to the present invention, it is possible to provide a filter for a PDP which is excellent in transmission image and has a reflection preventing property. Further, according to the preferred embodiment of the present invention, it is possible to provide a PDP filter which is more resistant to interference fringes. # [Embodiment] (Structure of the outermost surface of the observation side (surface corrugated structure)) As described above, the required performance of P D P is stricter year by year, and the filter for PDP is gradually more highly demanded. Among them, in order to further improve the image quality characteristics, the reduction of the PDP surface system has become the most important issue, and this improvement is strongly demanded. It is considered that the theoretical mitigation can be achieved by reducing the refractive index of the outermost surface of the filter, and by making the refractive index between the layers constituting the filter as close as possible to zero, and arranging the light diffusion layer on the filter. The outline of the image has been unclear, and various reviews have been conducted in the past. However, 200821618 has the limit of lowering the refractive index of the outermost surface and reducing the difference in refractive index. In addition, when a large amount of particles are applied to the outermost layer and a high diffusivity of a so-called anti-glare film is applied to the surface of the filter, the reflection can be greatly reduced, but the sharpness of the PDP image is mapped. There is a tendency to deteriorate 'so it is not easy to get a comprehensive balance. The present inventors have found a filter for a PDP which is excellent in image quality which has both reduced reflection and transmission image sharpness. Here, the filter observation side surface indicates the surface of the viewer side when the filter is attached to the PDP panel. The filter for PDP of the present invention is formed by forming a highly rounded uneven structure (hereinafter referred to as a surface corrugated structure) on the outermost surface of the observation side. Specifically, the average surface roughness Ra of the outermost surface of the observation side is 15 to 100 nm on the outermost surface of the observation side, and the average roughness Rz of the outermost surface of the observation side is 50 to 1000 nm, and the surface corrugation width is 1 to 100 μm, the surface corrugation length is 1 to 500 μm, and the surface corrugation occupation ratio is 60 to 100% of the surface corrugated structure (refer to Fig. 1). • As described above, the light scattering by the reflection structure is reduced by the uneven structure. However, when the light scattering of the filter is made large, the reflection can be reduced, but the transmission image sharpness is lowered. Therefore, it has previously been considered that the contrast between the reflection and the transmission image is sharp. However, the inventors of the present invention have found that it is possible to reduce the reflection so that the smoothness of the transmitted image is not impaired by arranging a smooth uneven structure on the surface of the filter at a high occupancy rate. The average center sugar content R a of the outermost surface of the observation side is preferably from 20 to 80 nm, preferably from 25 to 60 nm, more preferably from 30 to 50 nm. The 10-point average roughness Rz is preferably from 7 〇 to 250 nm, and more preferably from 90 to 200 nm below 200821618. The surface corrugation width is preferably 10 to 60 nm, and more preferably 10 to 40 nm. The surface corrugation length is preferably 10 to 100 nm, and more preferably 10 to 60 nm. The surface ripple occupancy rate is preferably 70 to 90%, more preferably 75 to 85%. The surface corrugated structure is a photograph obtained by observing a surface of a metal by an optical microscope, and the length on the short axis side is defined as "surface corrugation width", and the length on the long axis side is "surface corrugation length". When it is close to a circle, its diameter is close to an ellipse, and its short axis is used as the surface corrugation width ® degree. The detailed measurement method will be described later. The surface corrugated structure may be a convex structure or a concave structure. Further, a method of forming a surface corrugated structure having such a shape will be described next with a method of forming an interface corrugated structure which will be described later.

When Ra is less than 15 nm, the outline of the image is sharpened, so that the image will be easily observed, and the transmission will be larger than 100 nm. Like the tendency to change. When Rz is less than 50 nm, the contour of the image to be reflected becomes clear, and the image is likely to be observed. When it is larger than • 1 000 nm, the transmitted image tends to be deteriorated. When the surface corrugation width is larger than 100 μm, there is a tendency to cause glare in the transmitted image, and when it is less than 1 μm, the transmitted image tends to be deteriorated. When the surface corrugation length is more than 500 μm, there is a tendency to cause glare in the transmission image, and when it is less than 1 μm, the transmission image tends to be deteriorated. The surface ripple occupancy rate is less than 60%, and the outline of the image is sharpened so that the image appears to be easily observed. Further, the reflection image is formed by reflected light from the PDP filter and reflected light from the panel. Since the reflected light from the panel is absorbed by the PDP using the 200821618 filter, it is possible to improve the reflection resilience by reducing the transmittance of the PDP filter. However, when the transmittance is excessively lowered, the image is darkened because the brightness of the transmitted image is also lowered. At this time, in order to maintain the brightness, it is necessary to make the image mapped on the P D P panel bright, and as a result, the power consumption is increased, so that it cannot be said to be a preferable aspect. The total light transmittance of the filter for PDP of the present invention is preferably from 20 to 60%, preferably from 25 to 50%, more preferably from 30 to 45%. With such a transmittance, it is possible to make the balance of reflection and the balance of transmitted image brightness better. (Structure of Filter) The filter for PDP of the present invention is preferably a laminate in which a plurality of layers are laminated. Each of these layers has a functional layer with unique functions. The functional layer may be a reflection preventing layer, a hard coat layer, a transparent resin layer, an ultraviolet shielding layer, or red. External line shielding layer, electromagnetic wave shielding layer, color correction layer, transparent substrate layer, layer, interlayer adhesion layer, etc. The order of these functional layers is not particularly limited, and it is preferable to arrange the antireflection layer on the outermost layer. In a preferred embodiment, a hard coat layer is disposed on the lower side of the antireflection layer, a colored correction layer is disposed on the lower side, and an electromagnetic wave shielding layer is disposed on the lower side. When an infrared ray absorbing agent is used for the infrared ray shielding layer, it is preferable to arrange the ultraviolet ray preventing layer on the upper side of the layer in order to prevent deterioration by ultraviolet rays. The preferred lamination sequence can be exemplified as an antireflection layer/hard coat layer: :3⁄4 Ming resin layer/UV barrier layer/color correction layer/infrared barrier layer/Carbide wave shielding layer/transparent substrate layer, antireflection layer/ Hard Coat / Transparent Resin Layer / UV Shielding Layer / Color Correction Layer / Infrared Shielding Layer / Transparent Substrate Layer / Electromagnetic Wave Shielding Layer, Antireflection Layer / Hard Coating / Transparent Resin Layer / UV Shielding Layer / Color Correcting Layer / Transparent Substrate layer/infrared ray shielding layer/electromagnetic wave shielding layer, prevention 10 200821618 Reflecting layer/hard coating layer/transparent resin layer/ultraviolet ray blocking layer/color correction layer/transparent substrate layer/electromagnetic wave shielding layer/infrared ray shielding layer and the like. The filter for PDP of the present invention can be mounted on the display surface of the Pdp area. Here, when mounted on the display surface of the PDP panel, the pd P filter can be directly attached to the display surface, or a space can be provided between the display surface and the display surface. When the distance d from the surface to the outermost surface of the filter observation side is 2 to 20 mm, the optimum transmission image sharpness can be maintained, and the reflection preventing property can be improved. (Interface corrugated structure) The structure of the filter for PDP of the present invention is a laminated body in which a plurality of layers are laminated, because the thickness, the height, and the density are formed by at least the interlaminar interface therebetween. Since the uneven structure (hereinafter referred to as the interface corrugation) is provided, it is preferable to provide a PDP filter which is excellent in reflection reflexibility and transmission image sharpness and which suppresses the performance of the interference fringe. Specifically, the interface corrugated structure is preferably a shape as described below. The interface wave # grain width is preferably 1 to 100 μm, preferably 10 to 60 μm, more preferably 10 to 30 μm. The interfacial corrugation length is preferably 1 to 5 Å, preferably 10 to 100 μm. It is preferably 1 〇 to 60 μm, and particularly preferably 10 to 30 μm. The interface corrugation height is preferably 〇 · 〇 5~3 μm 〇 〇 · 〇 5~1 · 5 microns is better, with 0. 1 to 1 μm is more preferable, and 0 to 1 to 〇·5 μm is particularly preferable. The interface wave occupancy rate is preferably 60 to 100%, preferably 70 to 90%, and more preferably 75 to 85%. The corrugated structure of such an interface may be a convex structure or a concave structure (refer to Fig. 1). The shape of the interface corrugated structure is obtained by photographing the interface junction 11: 200821618 using an optical microscope. The length of the short axis side is defined as "interface corrugation width", and the length of the long axis side is "interface corrugation length". When it is close to a circle, its diameter is close to an ellipse, and its short axis is used as the interface corrugation width. The interface ripple height is less than 〇.  When 〇 5 μm or the interface ripple occupancy is less than 60%, the effect of suppressing the reflection tends to be small. The interface ripple width is less than 0. When 0 5 μm or the interface ripple occupancy is less than 60%, the effect of suppressing the reflection tends to be small. When the interface corrugation width is greater than 100 μm, or the interface corrugation length is greater than 500 μm, there will be a tendency that the interface corrugated structure has a lens effect and the image is dazzling. Moreover, the interface corrugation width or the interface corrugation length is less than 1 When the micron or the interface corrugation height is 3 μm or more, the transmission image sharpness tends to be deteriorated. In the laminated body in which a plurality of layers are laminated, the difference in refractive index between the two layers sandwiching the surface on which the interface corrugation structure is formed is preferably 0.05 to 0.3. The refractive system difference is 0. 1~〇·2 is better. The difference in refractive index is greater than 0. 3 time light diffusivity change m. Strong, can observe the tendency of image sharpness to deteriorate. The difference in refractive index is less than 0. At 05 o'clock, the light diffusibility was weak, and it was observed that the image reflection effect φ was deteriorated. The PDP filter is preferably configured by arranging the antireflection layer/hard coat layer/transparent resin layer in order from the outermost layer. With such a configuration, the surface hardness can be improved while reducing the reflectance. With such a configuration, the reflectance can be lowered and the surface hardness can be improved. The problem with this configuration is that if the hard coat layer has uneven thickness, interference fringes (Newton's rings) are generated. By forming the interface corrugation structure at the interface between the hard coat layer and the transparent resin layer, generation of interference fringes can be suppressed. Here, when the interface corrugation height and the interface corrugation occupancy rate are high, the interference fringes can be reduced, but if the interface corrugation width, the interface wave 12 200821618 pattern height, and the interface corrugation occupancy rate are not controlled at the optimum crucible, the haze of the film becomes high. It will have an adverse effect on the image quality characteristics such as the sharpness of the transmitted image. By controlling the interface corrugation length, the interface corrugation height, and the interface corrugation occupancy in the above range, it is possible to simultaneously satisfy good anti-reflection properties, good transmission image sharpness, and suppression of interference fringes. (Method of Forming Interface Corrugated Structure) One method of controlling the shape of the interface corrugated structure is a method of transferring the surface shape of a mold such as an embossing roll having a concave-convex structure. The mold is pressed against one side of the transparent Φ resin layer to form an uneven structure on the surface, and a coating agent for forming a hard coat layer (hereinafter referred to as a hard coat composition) is applied onto the obtained uneven structure, and is 220 to 245 °. The heat treatment at a high temperature of C is effective for heat treatment of about 1 to 40 seconds. By varying the surface average roughness of the embossing roll for transferring the uneven structure, the transfer shape after pressing can be changed, and as a result, the width, height, and occupancy of the formed irregularities can be controlled. Further, it can be controlled by the pressing pressure at the time of transfer and the pressing temperature. When the uneven structure is formed between the hard coat layer and the transparent tree Φ lipid layer, the uneven layer structure is transferred onto the transparent resin layer such as a transparent plastic film, and then the hard coat layer is laminated on the surface on which the uneven structure is formed. Get the target structure. The casting rolls used to form the uneven structure can be suitably selected from those having irregularities to irregularities. Further, it is also possible to use a pattern such as a pattern, a matte roughness, a lenticular shape, or a spherical shape to be regularly or irregularly arranged. For example, the diameter of the convex portion or the concave portion is 1 to 100 μm, and the height is 〇·〇1 to 0. A convex portion or a concave portion formed of a part of a 5 micron sphere, but is not limited thereto. The transfer method using an embossing roll is one of the promising methods for forming an interface corrugated structure 13 200821618, but in order to uniformly form a relatively low-profile uneven structure, the following in line coating method is used. good. The pipe coating method is a method in which a thermoplastic resin is used as the transparent resin layer, and a coating of the hard coat composition is applied in the middle of the film formation step of the thermoplastic resin film. When a crystalline polymer is used as the thermoplastic resin, the interface corrugated structure between the controlled transparent resin layer and the hard coat layer can be formed by the production conditions and the selection of the hard coat composition. An example of a method of forming a ® interfacial corrugated structure at the interface between a hard coat layer and a transparent resin layer by a pipe coating method is a case where a polyester film is used in a transparent resin layer. Applying a hard coating composition to a polyester film which is appropriately crystallized before the completion of the crystal alignment (a polyester film having a crystallinity of 3 to 25 % as measured by a Raman method), Subsequently, a method of applying stretching and heat treatment and hardening the hard coating composition to form a hard coat layer is preferred. When the hard coating composition is hardened, ultraviolet rays may be irradiated as necessary. Equal activation rays. In order to obtain the above-mentioned suitably crystallized polyester film, it is possible to extend in the length direction Φ by heating the surface of the unstretched film which is melt-extruded. 5~3.  Get it 5 times. Further, it is also effective to add a crystallization nucleating agent to the film to promote crystallization and the like to form microcrystals. The hard coat composition partially penetrates into the polyester film by coating the polyester film with a suitably crystallization hard coating composition. Then, the polyester film in a state in which the hard coat composition in the unhardened state is laminated is stretched in the width direction, and the uneven structure can be formed due to the difference in stretchability between the permeated portion and the non-permeable portion. Adjusting the composition of the coating composition can control the uneven structure. The film stretched in the width direction is continuously introduced into the heat treatment step, and is hardened by heat treatment at about 220 ° C to 245 ° C to cure the hard coat layer 14 200821618 while improving the adhesion to the base film. The heat treatment time is preferably longer, and it is preferably carried out at a temperature of about 10 to 40 seconds. Further, when the film is formed at a high speed and the amount of heat is insufficient, it is effective to apply a method of hardening an activation ray such as an ultraviolet ray after heat treatment. In the pipe coating method, stretching must be performed after coating the composition. The method of applying a hard coat composition on a biaxially stretched polyester film and hardening it does not achieve the above-described interfacial corrugated structure. Further, even if the hard coat composition is coated on the polyester film having a degree of crystallization of more than 25 %, since the hard coat composition ® does not sufficiently penetrate into the polyester film, the above-described interfacial corrugated structure cannot be achieved. Therefore, the degree of crystallization of the polyester film before coating is also important. Next, a specific example of the method for producing the hard coat layer/transparent resin layered laminate having the interfacial corrugated structure of the present invention will be described by taking polyethylene terephthalate (hereinafter abbreviated as PET) as a transparent resin layer as an example. Will contain 0. 2% by weight average particle size is 0. PET particles of 3 micron cerium oxide particles (inherent viscosity is 0. 62 dl / g), dried at 180 ° C for about 2 hours to fully remove moisture, then supplied to the extruder, and melt extruded at a temperature of 260 ~ 300 ° C, from the T-shaped nozzle sheet-like Forming. The thus obtained sheet was cooled and solidified on a mirror-cooling drum to obtain an unstretched film. In this case, in order to improve the adhesion to the casting drum, it is preferable to use an electrostatic application method. Subsequently, the obtained unstretched sheet was subjected to a roll group heated to 70 to 120 ° C in the length direction. 5~3. 5 times stretch. Next, the surface of the film thus uniaxially stretched, and the hard coat composition was applied, and then the both ends of the film were gripped and guided to the tenter using a clip. Preheat in the tenter to 70~11 〇°c, and stretch about 2~5 times in the width direction to 15 200821618 8 0~125 °C. The laminated film which has been stretched in the width direction is further subjected to a relaxation treatment of 3 to 10% in an environment of 220 to 245 ° C, and heat treatment is performed to complete the crystal alignment and the film hardening of the PET film. (Method of Forming Surface Corrugated Structure) The method of controlling the shape of the interface corrugated structure formed on the surface of the film observation side is a method of transferring the surface shape of a mold such as an embossing roll having a concavo-convex structure similarly to the interfacial corrugated structure. However, when the antireflection layer is provided on the outermost surface, since the layer is as thin as about 1 〇 〇 nanometer, it is difficult to form the uneven structure while maintaining the stable antireflection performance. When the antireflection layer/hard coat layer/transparent resin layer is formed, the mold structure is first transferred onto the hard coat layer, and the antireflection layer is formed on the hard coat layer on which the uneven structure has been formed, in the antireflection layer. The corrugated structure forming the target is preferred. On the other hand, the above-described pipe coating method forms a corrugated structure at the interface between the hard coat layer and the transparent resin layer, and also forms a concave-convex structure on the surface of the hard coat layer. Therefore, when the reflection layer/hard coat layer/transparent resin layer is prevented from being formed, by forming the antireflection layer on such a hard coat layer, the target corrugated structure can be formed in the #antireflection layer of the outermost layer. Further, in the pipe coating method, the corrugated structure on the surface of the hard coat layer can be adjusted by controlling the leveling conditions after the application of the line, and the uneven structure having a low surface height can be uniformly formed, which is quite excellent. Here, the leveling refers to a step of smoothing the surface of the hard coat layer by applying a hard coat composition to the transparent resin layer and then heat-treating at a temperature at which the hard coat composition is not completely cured. The higher the temperature of the leveling step and the longer the time, the smoother the surface of the hard coat layer becomes. Conversely, the lower the temperature of the leveling step and the shorter the time, the surface of the hard coat layer has a steep concave-convex structure. The temperature of the leveling step is preferably in the range of 160 to 200 ° C 16 200821618, and the time of the leveling step is preferably 5 to 60 seconds. Immediately after the interface corrugated structure is formed by the pipe coating method, a large corrugated structure is formed on the surface of the hard coat layer corresponding thereto. However, the hard coating was leveled and smoothed according to the leveling conditions. Subsequently, the heat treatment is completely hardened by further heat-treating at a temperature of 220 to 245 ° C for about 1 to 4 seconds, and the structure is fixed. The hard coating film thus obtained has a controlled surface corrugation structure and an interface corrugated structure, and the corrugated structure of the surface can be controlled even if an antireflection layer having a thickness of 10 0 to 300 nm is provided thereon. . By doing so, it is possible to manufacture a film of a corrugated structure in which the corrugated structure of the antireflection layer and the interface are controlled. Next, each layer constituting the filter for P D P will be described more specifically. (Transparent Resin Layer) The transparent resin layer of the present invention is generally used as a substrate for laminating an antireflection layer, a hard coat layer, an infrared ray shielding layer, an electromagnetic wave shielding layer or the like. Further, it is also possible to act as an ultraviolet shielding layer by adding an ultraviolet absorbing component. • The transparent resin layer is preferably a film which can be melt-formed or melt-formed. Specific examples thereof include a film composed of polyester, polyolefin, polyamide, polyphenylene sulfide, cellulose ester, polycarbonate, acrylate or the like. These films can be suitably used as the substrate of each functional layer of the present invention, and the material of the transparent resin layer used for forming the surface of the corrugated structure is preferably required to have excellent transparency, mechanical strength, dimensional stability, and the like. Resin. Specifically, polyester, cellulose ester, acrylic acid (polyacrylate), etc. are mentioned. A suitable material which can be exemplified as the cellulose ester is triacetyl cellulose. A resin having a cyclic structure in a molecule of a polyacrylate, which is an optical or the like. 17 200821618 A suitable material having excellent directivity. The resin having a cyclic structure in the molecule may, for example, be an acrylic resin containing 1 〇 to 50% by weight of a glutaric anhydride unit. However, the base material for all of the functional layers of the present invention is balanced with all of the various properties, and polyester is particularly preferred. The polyester may be exemplified by polyethylene terephthalate, polyethylene-2,6-naphthalate, propylene terephthalate, butylene dibutyl phthalate and polypropylene naphthalate. Ester and the like. Among them, polyethylene terephthalate or polyethylene-2,6-naphthalene dicarboxylate is preferred, and polyethylene terephthalate is most preferred in terms of performance and cost. Further, it may be a mixture of two or more kinds of polyesters. Further, it may be a polyester obtained by copolymerizing these other dicarboxylic acid components or diol components. In this case, the crystallinity of the film which has completed the crystal alignment is preferably 25% or more, and is preferably 30. More than % is preferred, and more preferably 35% or more. When the degree of crystallization is less than 25%, dimensional stability or mechanical strength may become insufficient. The degree of crystallinity can be determined by Raman spectroscopy. When the above polyester is used, its intrinsic viscosity (measured in o-chlorophenol at 25 ° C according to JIS K73 67) is 〇·4~1. 2dl/g is better, with 0. 5~0. 8dl/g # is better. The transparent resin layer may be a composite film of a laminated structure of two or more layers. The composite film includes, for example, a composite film in which the inner layer portion does not substantially contain particles, and a layer containing particles in the surface layer portion, and a layer in which particles are contained in the inner layer portion and fine particles are contained in the surface layer portion. Body film and the like. Further, the composite film may be a polymer having a different chemical property from the inner layer portion and the surface layer portion, or may be a polymer of the same type. However, the application of particles and the like must stop at the extent that it affects transparency. When the polyester is used as the transparent resin layer, the film is prepared by biaxially stretching crystals from the viewpoint of the thermal stability of the film, and in particular, 18 200821618, which is sufficient in dimensional stability or mechanical strength and good in planarity. good. Here, the biaxially-stretched crystal orientation means that the thermoplastic resin film is stretched in the longitudinal direction and the width direction, respectively, before the unstretched, that is, the crystal alignment is not completed. It is preferably 5 to 5 times, and is preferably formed by heat treatment to complete crystal alignment, and a pattern showing biaxial alignment when diffracted by wide-angle X-rays is used. The thickness of the transparent resin layer can be appropriately selected according to the use, and is preferably from 10 to 500 μm, more preferably from 20 to 300 μm, from the viewpoint of mechanical strength or handleability. The transparent resin layer may contain various additives, a resin composition, a crosslinking agent, etc., especially in the range which does not inhibit optical characteristics. Examples thereof include an antioxidant, a heat stabilizer, an ultraviolet absorber, organic particles, and inorganic particles (for example, silica sand, colloidal silica sand, oxidized bromine, melamine, kaolin, talc, mica, calcium carbonate, barium sulfate, Carbon black, zeolite, titanium oxide, metal micropowder, etc.), pigments, dyes, antistatic agents, nucleating agents, acrylic resins, polyester resins, urethane resins, polyolefin resins, #polycarbonate resins, alcohols Acid resin, epoxy resin, urea resin, phenol resin, enamel resin, rubber resin, ruthenium composition, melamine crosslinking agent, oxazoline crosslinking agent, methylolated, alkylated urea Crosslinking agent, acrylamide, polyamine, epoxy resin, isocyanate compound, anthracycline compound, various decane coupling agents, various titanate coupling agents, and the like. The transparent light layer has a total light transmittance of 90% or more and a haze of 1. Below 5% is preferred. By using such a substance, the visibility and vividness of the image can be improved. Moreover, the transmission of the transparent resin layer b値 is 1. 5 is better. Because the transparent resin layer itself can observe a slight blemish when the b値 is greater than 1.25, it will damage the sharpness of the image. b値 is the color representation method specified by the International Commission on Illumination (CIE). b 値 indicates chroma, positive symbol poem indicates yellow hue, negative symbol indicates no: blue hue 'absolutely large indicates that the color of the color is more vivid color, absolute 値 hour is expressed The color has a smaller chroma. 〇时系 means no color. The adjustment of the color indication can be performed, for example, by using a coloring material containing a coloring material, and an inorganic pigment, an organic pigment, a dye, or the like can be used. Because • Excellent weather resistance, use cadmium red, iron oxide red, aluminum red, chrome silver, chrome oxide, Vildean pigment, titanium green, Ming green, cobalt chrome green, Victoria green, ultramarine blue, ultramarine blue, indigo Organic pigments such as Berlin Blue, Milo Blue, Cobalt Blue, Cellulan Blue, Cobalt Indigo, Cobalt Zinc Blue, Manganese Violet, Mineral Violet, Cobalt Violet, etc. are preferred. (Hard Coating Layer) The hard coat layer is preferably laminated on at least one side of the transparent resin layer. The components of the hard coat layer include a thermosetting resin such as an acrylic resin, a fluorene resin, a melamine resin, an aminocarboxylic acid resin, an alkyd resin, or a fluorine resin, and a photocurable resin. When considering the balance of performance, cost, productivity, etc., an acrylic resin is preferred. The acrylic resin is preferably a resin containing a polyfunctional acrylate as a main component. The polyfunctional acrylate is a monomer or oligomer or a prepolymer having 3 or more, preferably 4 or more, more preferably 5 or more (meth) acryloxy groups in one molecule. In the specification of the present invention, "·· · (meth)acrylic acid · · ·" means "· ·. acrylic acid. ·. Or · · · (methyl) acrylic acid. ·. Abbreviation. 20 200821618 Specific examples can use neopentyl alcohol tri (meth) acrylate, neopentyl alcohol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol Tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, trimethylolpropane tri (meth) acrylate, trishydroxyl Propane EO modified tri(meth)acrylate, pentaerythritol triacrylic acid hexamethylene diisocyanate oligomer, pentaerythritol triacrylate toluene diisocyanate Ester oligomer, neopentyl alcohol isophorone diisocyanate oligomer, and the like. These can be used in one type or in combination of two or more types. The content of these polyfunctional acrylates is preferably from 50 to 90% by weight, more preferably from 50 to 80% by weight, based on the total amount of the hard coat constituents. In order to alleviate the rigidity of the hard coat layer or to alleviate the shrinkage during hardening, it is preferred to use a 1-2 functional acrylate other than the above compound. The monomer having 1 or 2 ethylenically unsaturated double bonds in one molecule can be used without particular limitation in the case of a monomer having a radical polymerizable property. The content of the monomer having 1 to 2 ethylenically unsaturated double bonds is preferably 10 to 40% by weight, preferably 20 to 40% by weight, based on the total amount of the hard coating constituents. For better. Further, in addition to the above components, a reactive thinner can be used as the hard coat composition. The reactive diluent functions as a solvent for the medium of the coating agent in the coating step, and is itself a group which reacts with the monofunctional or polyfunctional acrylic oligomer to become a copolymerized component of the coating film. Further, the modifier of the hard coat layer can be used in a range that does not impair the hardening reaction, and a coating improver, an antifoaming agent, a tackifier, an antistatic agent, and an inorganic system 21 200821618 particles, organic particles, and organic lubrication can be used. Agent, organic polymer compound, ultraviolet absorber, light stabilizer, dye, pigment or stabilizer. For the method of hardening the hard coat composition, for example, a method of irradiating an actinic ray or a high-temperature heating method or the like can be used. When such methods are used, it is desirable to add a photopolymerization initiator or a thermal polymerization initiator to the above-mentioned hard coat composition. Specific examples of the photopolymerization initiator include carbonyl compounds such as acetophenone, 2,2-ethoxyethyl benzene, p-dimethyl acetophenone, p-dimethylamino propyl benzene, and diphenyl ketone. Sulfur compounds such as tetramethylhybium sulphide monosulfide, tetramethyl sulphate disulfide, thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, and the like. These photopolymerization initiators may be used alone or in combination of two or more. Further, as the thermal polymerization initiator, a peroxy compound such as benzamidine peroxide or diper(t-butyl peroxide) can be used. The photopolymerization initiator or the thermal polymerization initiator is preferably used in an amount of 〇·〇 1 to 1 〇 by weight based on 1 part by weight of the hard coating composition. When the electron beam or the r-ray is used as the hardening means, it is not necessary to add a polymerization initiator. Further, it is not necessary to add a polymerization initiator to the heat at a high temperature of 200 ° C or higher. In order to prevent thermal polymerization during production or to cause a dark reaction during storage, it is preferred to add a thermal polymerization inhibitor such as hydroquinone, hydroquinone monomethyl ether or 2,5-t-butylhydroquinone. The amount of the thermal polymerization inhibitor added is 0% with respect to the total weight of the hard coating composition. 0 0 5~0. 0 5 wt% is preferred. In the present invention, when a hard coat layer is formed on the transparent resin layer by a line coating method, it is preferred to contain a melamine-based crosslinking agent in the hard coat composition. By making the hard coat composition contain a melamine-based crosslinking agent, the adhesion of the hard coat layer to the transparent tree 22 200821618 becomes higher. Further, in the line coating method, since the melamine-based crosslinking agent penetrates the transparent resin layer when the hard coating composition is applied and has an effect of controlling the uneven structure, the effect of reducing the interference fringe becomes high. The type of the melamine-based crosslinking agent is not particularly limited, and a methylolated melamine derivative obtained by condensing melamine and formaldehyde, a compound obtained by partially or completely esterifying methylolated melamine with a lower alcohol, or It is the use of such a mixture. Further, the melamine-based crosslinking agent can be a condensate composed of a monomer or a polymer of a dimer or more, or a mixture of such a mixture. As the lower alcohol used for the etherification, methanol, ethanol, isopropanol, n-propanol, n-butanol, isobutanol or the like can be used. The functional group is preferably an imido group, a methylol group or an alkoxymethyl group having a methoxymethyl group or a butoxymethyl group in one molecule. Specifically, there are an imido type methylated melamine, a methylol type melamine, a fully alkyl type methylated melamine, and the like. Among them, from the viewpoint of adhesiveness or interference-free streaking, it is preferred to use methylolated melamine or fully alkyl-type methylated melamine. In the solid content of the hard coat composition, the amount of the melamine-based crosslinking agent is #2 to 40% by weight, preferably 5 to 35% by weight, more preferably 10 to 30% by weight, from adhesion to hardness. And the balance of interference-free stripes is preferred. Further, in order to promote the hardening of the melamine-based crosslinking agent, it is preferred to use an acid catalyst in combination. Formic acid, dodecylbenzenesulfonic acid, dimethylpyrophosphate, styrenesulfonic acid and derivatives thereof can be suitably used as an acid catalyst. The solid catalyst is preferably added in an amount of from 0.005 to 1% by weight, more preferably from 1 to 5% by weight, based on the melamine crosslinking agent. When a melamine crosslinking agent is added, it is particularly preferable to use a polyfunctional acrylate having at least one hydroxyl group in terms of improving adhesion. 23 200821618 Also, when forming a hard coat layer, it is preferable to use a leveling agent in order to smooth the surface of the hard coat layer. Typical examples of the leveling agent include a lanthanum leveling agent, an acrylic leveling agent, and a fluorine leveling agent. When smoothness is only required, since it is also effective to add a small amount, a bismuth leveling agent is preferred. The lanthanide leveling agent is preferably obtained by using polydimethyl siloxane as a basic skeleton and adding a polyoxyalkylene (for example, SH190 manufactured by Toray-DOWCORNING Co., Ltd.). On the other hand, when the laminated film is further provided on the hard coat layer, the adhesion must not be inhibited, and in this case, an acrylic leveling agent is preferably used. Such a leveling agent is preferably _ using "ARUFON (registered trademark) - UP 1 000 series, UH2000 series, UC3 000 series: East Asian synthetic chemistry (shares)". The leveling agent is preferably contained in the hard coat composition in an amount of from 0 to 0.001% by weight. In the present invention, it is preferred that the hard coat layer is directly laminated on the transparent resin layer in such a manner that the adhesive layer is not interposed therebetween. When the adhesive layer is interposed, the adhesion coefficient between the adhesive layer and the transparent resin layer or the hard coat layer may cause interference fringes, or deterioration of the adhesive layer due to ultraviolet rays, or adhesion durability in a high-temperature and high-humidity state. The situation of deterioration. The coating means of the Φ hard coat composition can be carried out by various coating methods such as a reverse coating method, a gravure coating method, a rod coating method, a bar coating method, a die coating method or a spray coating method. The thickness of the hard coat layer is determined depending on the application, and is usually preferably 〇 1 to 3 〇 μm, preferably 1 to 15 μm, and more preferably 2 to 8 μm. When the thickness of the hard coat layer is less than 〇 · 1 μm, even if it is sufficiently hardened, it is too thin, and there is a tendency that the surface hardness is insufficient or it is easily injured. On the other hand, when the thickness is more than 30 μm, warpage occurs during hardening, or stress such as bending tends to cause cracks in the cured film. 24 200821618 (Transparent Resin Layer) The transparent resin layer of the present invention imparts mechanical strength to the P D P body, and an inorganic compound molded article or a transparent organic polymer molded article can be used. The inorganic compound molded article may preferably be glass, reinforced or semi-strengthened glass. At this time, the thickness is 0. The range of 1 to 1 mm is better, preferably 1 to 4 mm. The polymer molded article may be transparent in the visible wavelength region, and specific examples thereof include polyethylene terephthalate (PET), polyether oxime, polystyrene, polyethylene naphthalate, and ethylene propylene. Ester, polyetheretherketone, polycarbonate, polypropylene, polyimide, triethylcellulose, and the like. When the main surface of the transparent polymer molded article is smooth, it may be in the form of a sheet (sheet) or a film. When a film-form polymer molded article is used as the substrate, since the substrate has excellent dimensional stability and mechanical strength, a transparent laminate having excellent dimensional stability and mechanical strength can be obtained, and in particular, it can be suitably used. When the physical properties are. Further, since the transparent polymer film is flexible and can form a functional layer continuously by the roll-shaped article to the roll method, the transparent polymer film is used with high efficiency and can be produced in a large area with a large size. The layered body of the functional layer. At this time, the thickness of the film is 10 to 250 μm. When the thickness of the film is less than 10 μm, since the mechanical strength of the substrate is insufficient, and the thickness is more than 250 μm, the film is not suitable for winding the film by the roll because of insufficient flexibility. (Color Correction Layer) The color correction layer contains a color material having a color correction layer to correct the color of the transmitted visible light, and to improve the image characteristics of the PDP. More specifically, it is possible to adjust the PDP by the color correction layer 25 200821618 The overall transmittance of the filter and the task of adjusting the performance of the filter. The tone correction is achieved by selectively absorbing visible light of a specific wavelength among the visible light transmitted through the PDP filter. The colorant can use any of a dye and a pigment. The selective absorption of "visible light of a specific wavelength" means light of a specific wavelength region among light lines of a wavelength region (wavelength of 380 to 780 nm) which specifically absorbs visible light. Here, the wavelength region specifically absorbed by the toner may be a single wavelength region or a plurality of wavelength repair regions. Such a coloring material is exemplified by well-known organic pigments, organic dyes, and inorganic pigments. Among these, because of the good durability, it is particularly preferable to use a phthalocyanine color or a enamel coloring material. Further, it may be a color material containing two or more types. As long as the coloring material having the color tone correction property is contained, the color correction layer can adopt various states. The color correction layer can be formed in an appropriate manner according to its aspect. For example, when the toner contains a toner having a color tone correction property, a coloring property having a color tone correction property can be added to the adhesive as a dye or a pigment, and applied to form a tone correction layer having a desired thickness. A commercially available adhesive can be used as the adhesive, and preferred examples thereof include an acrylate copolymer, a polyvinyl chloride, an epoxy resin, a polyurethane, a vinyl acetate copolymer, a styrene-acrylic acid copolymer, and a poly An adhesive such as an ester, a polyamine, a polyaniline, a styrene-butadiene copolymer rubber, a butyl rubber or an anthracene resin. Further, when the 'tone correction layer contains a transparent resin layer of a color material having a color correction property', a thermoplastic resin as a raw material of the transparent resin layer can be melted in a desired solvent, and a color having a color tone correction property added thereto can be applied. The solution is dried and dried to form a tone correction layer. For the method of applying a solution containing a color tone-correcting coloring material, for example, a dip coating method, a roll coating method, a spray coating method, a gravure coating method, a comma coating method, a die coating method, or the like can be selected. These coating methods can be processed continuously, and when compared with the batch type vapor deposition method, the productivity is excellent. Further, a spin coating method capable of forming a thin and uniform coating film can also be employed. In order to obtain sufficient tone correction performance, the thickness of the color correction layer is 〇.  More than 5 micrometers is preferred. Further, since the light transmittance, more specifically, the visible light transmission property is excellent, it is preferably 40 μm or less, and particularly preferably 1 to 25 μm. When the thickness of the color correction layer is 40 μm or more, when a solution containing a desired dye, a pigment, or a transparent resin is applied to form a color correction layer, the solvent tends to remain, and the workability in forming the color correction layer is deteriorated. It is not good. When the color correction layer contains an adhesive layer or a transparent resin layer of a toner having a color tone correction property, the coloring material is preferably contained in an amount of 0.1% by mass or more, and particularly preferably 1% by mass or more based on the adhesive or resin. . In order to maintain the physical properties of the adhesive layer or the transparent resin layer, the amount of the toner having the color tone correction property is preferably suppressed by 1% by mass or less. (Infrared Shielding Layer) The intensity of the near-infrared rays generated by the PDP causes an erroneous operation due to the action of peripheral electronic devices such as a remote controller or a wireless telephone. Therefore, it is necessary to cut off the light in the near-infrared region to a practical extent. The wavelength region in question is 80 to 1000 nm, and the transmittance in this wavelength region is 20% or less, preferably 10% or less. The near-infrared ray is usually a coloring material having a property of absorbing near-infrared rays (maximum absorption wavelength of 75 0 to 1100 nm), specifically, using a metal complex system, an amine key system, an indigo system, 27 200821618 naphthalene. The pigments of indigo and diammonium are preferred. Further, it may contain two or more kinds of color materials. The structure, formation method, thickness, and the like of the near infrared ray absorbing layer are the same as those of the color correction layer described above. The near-infrared ray absorbing layer may be the same layer as the color correction layer, and even if the color correction layer contains a coloring property having color correction property and a coloring material having absorption of near infrared ray, it may be an infrared ray shielding layer different from the color correction layer. The near infrared ray absorbs the amount of the toner relative to the binder resin to contain 0. 1% by mass or more is preferable, and 2% by mass or more is particularly preferable, and in order to maintain the physical properties of the adhesive layer or the transparent resin layer containing the infrared absorbing agent, the total amount of the coloring matter and the near-infrared absorbing agent having the color tone correction property is It is better to suppress below 10% of children. (Ne barrier layer) In order to selectively absorb and discharge the discharge gas from the sealed PDP panel, for example, the luminescent color of the bismuth and bismuth two-component gas (mainly in the wavelength range of 5 60 to 6 10 nm) It is preferable that the infrared ray blocking layer or the color correction layer contains one or more kinds of color tone correcting agents. Thereby, it is possible to absorb and attenuate unnecessary light rays which are caused by the emission of the discharge gas among the visible light that is emitted from the display screen of the PDP, and as a result, the display color of the visible light that is emitted from the display screen of the PDP is close to the display color of the display target. , able to display natural tones. (Ultraviolet ray blocking layer) The ultraviolet ray shielding layer has a task of preventing photodegradation of a color material contained in a color correction layer or an infrared ray surface corrugated structure located on the panel side of the layer. As the ultraviolet shielding layer, a transparent resin layer containing an ultraviolet absorber, an adhesive layer, or the like can be used. A relatively good condition is preferably formed by the continuous reflection of the antireflection layer/hard coat layer/transparent resin layer from the surface of the observer side 28 200821618, and the ultraviolet resin layer is preferably contained in the transparent resin layer. The ultraviolet absorber is preferably a sulphuric acid compound, a diphenyl ketone compound, a benzotriazole compound, a cyanoacrylic compound, a benzoquinone compound, or a cyclic imido ester compound. The benzoindoledione compound is preferred from the viewpoints of ultraviolet cutoff and color tone of from 380 nm to 3,90 nm. These compounds may be used alone or in combination of two or more. Further, it is more preferable to use a stabilizer such as HALS (hindered amine light stabilizer) or an antioxidant. The ultraviolet shielding layer preferably has a transmittance of 5% or less at a wavelength of 380 nm, thereby protecting the influence of ultraviolet rays on the substrate or the dye color. The content of the ultraviolet absorber in the ultraviolet shielding layer is 0. 1 to 5 mass%, because it is excellent in the effect of preventing photodegradation of the color material contained in the color correction layer, and does not hinder the strength of the transparent resin layer, it is preferably 0. 2 to 3 mass% is better. The ultraviolet shielding layer is preferably in the range of 5 to 250 μm in thickness, preferably in the range of 50 to 200 μm, more preferably in the range of 80 to 200 μm. When the thickness of the ultraviolet absorbing layer is in the range of 5 to 250 μm, the effect of absorbing the ultraviolet ray incident from the observer side of the PDP filter is excellent, and the light transmittance and specifically the visible light ray transmittance are excellent. (Anti-reflection layer) The anti-reflection layer is preferably a structure in which a balance between performance and cost is obtained, and a low refractive index layer and a high refractive index layer are laminated from the outermost surface side. The antireflection layer is preferably laminated on the hard coat layer. The method of forming the antireflection layer is not particularly limited, and in consideration of the balance between cost and performance 29 200821618, it is preferred to apply the coating by wet coating. The wet coating is preferably a micro gravure coating, a spin coating, a dip coating, a curtain coating, a roll coating, a spray coating, a casting method, or the like. From the viewpoint of uniformity of coating thickness, it is preferred to use microgravure coating. The applied coating is formed by curing by an activation ray such as heat, drying, heat or ultraviolet rays to form a film. Interaction The antireflection layer is not particularly limited as long as it has antireflection properties, and the following is a particularly preferred aspect of the antireflection layer. The refractive index (nL) of the low refractive index layer is 1. 23~1. 42 is better to ® 1. 34~1. 38 is better. The refractive index (nL) of the high refractive index layer is 1·5 5~1. 80 is better, to 1. 6 0~1. 75 is better. Further, the difference in refractive index between the low refractive index layer and the high refractive index layer is preferably 155 or more. Further, the refractive index (nG) of the hard coat layer is 1. 45~1. The range of 55, the refractive index (nL) of the low refractive index layer, and the refractive index (nH) of the high refractive index layer satisfy the following formulas (1) and (2) because the minimum reflectance can be further reduced. It is better. • (nH)={(nL)x(nG)1/2±0. 02 (1) • · (nL): {(nH)x(nG)1/2±0. 02 (2). The wavelength (λ) of the visible light to be reflected can be arbitrarily selected in the visible light region, and is usually selected in the range of 450 to 650 nm. Considering the refractive index (nH) of the above preferred high refractive index layer, in order to obtain more uniformity. The reflection spectrum, the thickness (dH) of the high refractive index layer of the reflection preventing layer is preferably in the range of 100 to 300 nm, preferably in the range of 1 〇〇 to 200 nm. Similarly, the thickness (dH) of the low refractive index layer is preferably in the range of 70 to 160 nm, preferably in the range of 8 to 140 nm, preferably in the range of 85 to 105 nm. . 30 200821618 Since it is possible to increase the refractive index and impart antistatic property to the surface of the antireflection layer, it is preferable that the constituent component of the high refractive index layer is obtained by dispersing the metal compound particles in the resin composition. The resin component is preferably a (meth) acrylate compound. In order to enhance the solvent resistance or the degree of the film formed by irradiation with active light, a (meth) acrylate compound is preferred, and in order to improve solvent resistance, two or more (meth) groups are contained in the molecule. A polyfunctional (meth) acrylate compound of an acrylonitrile group is particularly preferred. For example, pentaerythritol tri(meth)acrylic acid ester, or trimethylolpropane tri(meth)acrylate, glycerol tri(meth)acrylate, ethylene modified tris(meth)acrylic acid Trifunctional (meth) acrylate such as ester, gin-(2-hydroxyethyl)-trimeric isocyanate tri(meth) acrylate, neopentyltetrakis (meth) acrylate, dipentaerythritol A tetrafunctional or higher (meth) acrylate such as penta(meth)acrylate or dipentaerythritol hexa(meth)acrylate. The metal compound particles are preferably various metal oxide particles using conductivity. It is particularly preferable as tin-containing cerium oxide particles (cerium), zinc-containing cerium oxide particles, tin-containing oxidation-indium particles (cerium), zinc oxide/alumina particles, and cerium oxide particles. It is more preferable to use tin-containing indium oxide particles (I TO). From the viewpoint of the transparency of the low refractive index layer, the average primary particle diameter (the ball equivalent diameter measured by BET) of the metal compound particles is 0. Particles below 5 microns are preferred. With 0. 001~0. 3 microns is preferred, with 0. 005~0. 2 microns is better. The blending ratio of the constituent components of the high refractive index layer is preferably 10/90 to 3 0/70 in terms of the mass ratio of the resin component to the metal compound particles, and more preferably 15/8 5 to 2 5/75. When the metal compound particles are in such a preferable range, the film obtained in 200821618 has high transparency and conductivity, and the physical properties and chemical strength of the obtained film are not deteriorated. The high refractive index layer is preferably formed by adjusting a coating liquid dispersed in a solvent, and applying the coating liquid onto a hard coat layer, followed by drying and hardening. The low refractive index layer is obtained by coating a coating composition composed of ceria arsenic microparticles having a cavity, a siloxane compound, a curing agent, and a solvent, because the refractive index can be made higher and the surface refractive index can be made lower. It is better. ® In order to improve surface hardness and excellent scratch resistance, the low refractive index layer is preferably a solid combination of a matrix material of a siloxane compound and cerium oxide microparticles. Therefore, it is preferred to combine the naphthenic compound with the surface of the cerium oxide microparticles in advance at the stage of the coating composition before coating. The coating composition of the object can form a stanol compound by hydrolyzing a ruthenium compound in a solvent by a acid catalyst in the presence of cerium oxide microparticles, and then subjecting the stanol compound to a condensation reaction. get. In order to easily react with the oxoxane compound, the cerium oxide microparticles preferably have a stanol group at the surface #. The obtained coating material is a siloxane compound containing a condensate of the decane compound. Further, these decane compounds may also contain a decyl alcohol compound which has been hydrolyzed but not condensed. The content of the siloxane compound is preferably 20% by mass to 70% by mass, particularly preferably 30% by mass to 60% by mass based on the total amount of the film formed when the film is formed. Since the refractive index of the film is low and the hardness of the film can be increased, it is preferred to contain a siloxane compound in this range. Therefore, the content of the siloxane compound in the coating is preferably in the above range with respect to the total components other than the solvent. 32 200821618 Among these, for low refractive index, use is selected from the group consisting of trifluoromethyltrimethoxydecane, trifluoromethyltriethoxydecane, trifluoropropyltrimethoxydecane, and trifluoropropyl A fluorine-containing decane compound of triethoxydecane is preferred. The amount of the decane compound is preferably from 20% by mass to 80% by mass, particularly preferably from 30% by mass to 60% by mass based on the total amount of the decane compound. When the amount of the decane compound is 20% by mass or less, the low refractive index may be insufficient. On the other hand, when the amount of the decane compound is more than 80% by mass, the hardness of the film may be lowered. Further, when a preferred decane compound other than the above decane compound is exemplified, a vinyl trialkoxy decane, a 3-methacryloxypropyl trialkoxy decane, a methyltrimethoxy decane, and a Triethoxy decane, phenyl trimethyltrimethoxy decane, phenyl triethoxy decane, dimethyl dialkoxy decane, tetramethoxy decane, and tetraethoxy decane. The number average particle diameter of the cerium oxide microparticles used in the low refractive index layer is preferably from 1 nm to 200 nm, and the number average particle diameter is particularly preferably from 1 nm to 70 nm. When the number average particle diameter is 1 nm or less, the bonding with the matrix material Φ material may be insufficient, and the hardness of the film may be lowered. On the other hand, the number average particle size is greater than 200. In the case of nanometers, there is a case where the effect of low refractive index cannot be sufficiently exhibited. Here, the number average particle diameter of the cerium oxide microparticles is preferably measured by using various particle counters to measure the particle diameter of the cerium oxide microparticles added to the coating. Further, in the measurement after the formation of the film, it is preferred to measure the particle size of the cerium oxide microparticles in the film by using an electron scanning microscope or a transmission electron microscope. The cerium oxide microparticle having a hole inside the low refractive index layer because the particle itself has a refractive index of 1. 20~1. 40, the introduction of the fold 33 200821618 The coefficient of incidence has a large effect. The oxidized fine particles having voids therein may be cerium oxide microparticles having a cavity portion surrounded by a casing, porous cerium oxide microparticles having a plurality of cavity portions, and the like. A commercially available product can also be used as the ceria particles having a void inside. The content of the silica sand fine particles used in the low refractive index layer is preferably from 30% by mass to 80% by mass, particularly preferably from 40% by mass to 70% by mass, based on the total amount of the film. Therefore, the content of the cerium oxide microparticles in the coating with respect to the total component other than the solvent is preferably in the above range. When the cerium oxide fine particles in this range are contained in the ? ♦ film, not only the refractive index but also the hardness of the film can be improved. When the content of the cerium oxide microparticles is less than 30% by mass, the effect of lowering the refractive index between the particles becomes small. Further, when the content of the cerium oxide fine particles is more than 80% by mass, since many island phenomena occur in the hard coat film and the hardness of the film is lowered, the refractive index is uneven depending on the position, which is not preferable. Further, it is also preferable to add various curing agents or three-dimensional crosslinking agents which can promote the curing of the coating composition or make the curing difficult. Specific examples of the curing agent include a nitrogen-containing organic substance, an oxime resin curing agent, various metal alkoxides, various metal chelating agent compounds, an isocyanate compound and a polymer thereof, a melamine resin, a polyfunctional acrylic resin, a urea resin, and the like. One type or two or more types are added. Among them, a metal chelating agent compound is preferably used from the viewpoint of the stability of the curing agent, the workability of the obtained film, and the like. Among these, an aluminum tongs compound and/or a magnesium tongs compound having a low refractive index are preferred for the purpose of low refractive index. These metal chelating compounds can be easily obtained by reacting an alkoxide metal with a chelating agent. Examples of the chelating agent can be acetoacetate, benzylidene acetonide, diphenylmethyl 34 200821618 decyl methane, etc.; acetonitrile ethyl acetate, benzamidine ethyl acetate, etc. 3-ketoester and the like. When considering the preservation stability and easy availability, it is particularly preferable to use aluminum as an example of acetylacetate and aluminum. The amount of hardener added is 0 with respect to the amount of total decane compound in the coating composition.  1% by mass% to 10% by mass, preferably 1% by mass to 6% by mass. Here, the total amount of the decane compound means an amount including the decane compound, the hydrolyzate thereof, and the condensation thereof. When the content is less than 〇 · 1% by mass, the hardness of the obtained film is lowered. On the other hand, when the content is more than 1% by mass, the hardness of the obtained film is increased, but the refractive index is also improved, which is not preferable. Further, the coating composition is preferably a solvent which has a boiling point of from 1 to 10 ° C ° C at atmospheric pressure and a solvent having a boiling point of less than 1 〇 〇 ° C at atmospheric pressure. When a solvent having a boiling point of 100 to 180 ° C at atmospheric pressure is contained, the coating amount of the coating liquid becomes good, and a film having a flat surface can be obtained. Further, by containing a solvent having a boiling point of less than 1 〇 〇 °C at atmospheric pressure, the solvent can be volatilized efficiently when a film is formed, and a film having a high hardness can be obtained. That is, it is possible to obtain a film having a flat surface and a high hardness. # A solvent having a boiling point of 100 to 180 ° C at atmospheric pressure is particularly preferred as propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, and diacetone alcohol. The solvent having a boiling point of less than 100 ° C at atmospheric pressure may, for example, be methanol, ethanol, isopropanol or tert-butanol 'methyl ethyl ketone. These can be used singly or in combination. The content of the total solvent of the coating composition is preferably in the range of from 130,000 to 99,000% by mass, and particularly preferably in the range of from 150,000 to 600% by mass, based on the total decane compound content. Here, the total amount of the decane compound means 35 200821618, which includes the entire amount of the decane compound, the hydrolyzate thereof, and the condensate thereof. (Electromagnetic wave shielding layer) The PDP generates a strong electromagnetic wave leakage from the panel in terms of its structure or operation principle. In recent years, the impact of electromagnetic wave leakage from electronic machines on the human body or other machines has been discussed. For example, in Japan, the suppression is based on VCCI (Process Control Equipment Electronic Office Equipment Interference Spontaneous Control Committee; voluntary control conuncil for interference by processing equipment e 1 ectr ο nic 〇fficemachine ) benchmark. Specifically, the VCA indicates the limitation of the business use, and the Class A radiation field strength is less than 50 dB # V/m, which means that the limit of the live use is less than 40 dB / z V / m, but because The radiated electric field intensity of the PDP is in the range of 20 to 90 MHz and is larger than 50 dB/zV/m (when the diagonal is 40 inches), so the electromagnetic wave shielding layer must be disposed. In order to exhibit the performance of the electromagnetic shielding layer, the surface resistance of the electromagnetic shielding layer is preferably 3 Ω / □ or less, preferably 1 Ω / □ or less, and 0. 5 Ω / □ or less is more preferable. • The electromagnetic wave shielding layer can be exemplified by, for example, a conductive mesh film and a metal transparent conductive film. The metal transparent conductive film is a product obtained by laminating a transparent metal thin film on a transparent resin layer. Specifically, a metal thin film of ITO, AZO, AgPd or the like is laminated on a transparent resin film by a sputtering method or a vapor deposition method. When the necessary conductivity of the metal thin film is considered, the thickness of the metal thin film is preferably 100 to 500 nm, and the thickness of the transparent resin layer is preferably 80 to 300 μm. On the other hand, a case where a conductive mesh film is used as the electromagnetic wave shielding layer will be described below. The mesh shape may be a lattice shape or a honeycomb shape, and is not limited to the specific one. A method of forming a conductive mesh layer on a transparent resin layer or the like can be carried out by a known method, for example, 1) a method of printing a pattern on a transparent resin layer by a screen printing method or a gravure coating method, and 2) an adhesive is applied. Or a method of bonding a woven fabric made of a conductive fiber to a bonding material, 3) a method of patterning a metal foil made of copper, aluminum, or nickel through an adhesive or an adhesive, and 4) Various known thin film forming methods such as vapor deposition, sputtering, electroless plating, and the like are formed by forming a metal thin film made of copper, aluminum, or nickel. The patterning method of the above 3) and 4) may, for example, be a photolithography method. The thickness of the mesh layer in the conductive mesh film is 0. 5 to 2 μm is determined by the conductivity, aperture ratio, and formation method of the conductive mesh layer. Since the thickness of the mesh layer is too thin, the conductivity is insufficient, and when it is too thick, the cost is increased, preferably 5 to 15 μm. The pattern of the mesh layer is such that the thinner the line width and the wider the pitch, the higher the aperture ratio and the transmittance, and the better, because the interference fringes due to interaction with the pixels of the display are less likely to occur. However, when the aperture ratio and the transmittance ^ are increased, it is preferable to use a line width of 5 to 20 μm and a pitch of 150 to 400 μm because of insufficient conductivity. Further, for example, when the mesh pattern is a lattice pattern, the mesh pattern has a certain degree of angle (bevel angle) in order to avoid interference with the pixels of the display arranged in the vertical and horizontal directions, and the lines are arranged side by side with respect to the pixels. ) is better. When the mesh layer is composed of a metal such as copper, aluminum or nickel, a layer having a black pigment or a black dye or a black layer composed of chromium or the like is provided on the surface thereof and/or the interface with the transparent resin layer. Preferably, the reflection of the metal can be prevented, and the PDP filter having excellent contrast and visibility can be obtained. 37 200821618 The electromagnetic wave shielding layer can be formed on the panel side of the PDP filter, and can also be formed on the observer side. Since the electromagnetic wave shielding layer has a high reflectance, it is preferably formed on the panel side. The color correction layer or the near-infrared ray shielding layer is disposed on the observer side of the electromagnetic wave shielding layer to reduce the transmittance of the filter because the reflected light from the electromagnetic wave shielding layer can be reduced. (Light-diffusing layer) In addition to the surface corrugation structure, a light-diffusing layer (a component having a refractive index difference of the binder component) may be further provided. The light diffusion layer may have a function of only diffusing light, or may disperse a component having a difference in refractive index in an antireflection layer, a hard coat layer, a transparent resin layer, an ultraviolet shielding layer, an infrared shielding layer, an electromagnetic wave shielding layer, and a color correction layer. A transparent substrate layer, an interlayer adhesion layer, or the like imparts a function of diffusing light. When the functional layer imparts a light diffusing function, it is preferable to disperse a component having a refractive index difference in the transparent resin layer or the interlayer insulating layer from the viewpoint of not impeding the original function of the layer and impairing the productivity. • A component having a refractive index difference can be used in various organic or inorganic additives without affecting optical characteristics. Specific examples thereof include inorganic particles such as cerium oxide, colloidal cerium oxide, aluminum oxide, alumina sol, kaolin, talc, mica, calcium carbonate, barium sulfate, carbon black, zeolite, titanium oxide, and metal fine powder. Organic particles such as an acrylic resin, a polyester resin, a urethane resin, a polyolefin resin, a polycarbonate resin, an alkyd resin, an epoxy resin, a urea resin, a phenol resin, an anthracene resin, and a rubber-based resin. (Interlayer Adhesive Layer) In the present invention, an adhesive interlayer adhesive layer can also be used for laminating 38 200821618 various functional layers as described above. The adhesive to be used in this case is not particularly limited as long as it is used to adhere two objects by the adhesive work, and an adhesive composed of a rubber type, an acrylic type, an anthraquinone type, or a polyvinyl ether can be used. Commercially available multi-functional acrylic UV-curable coatings can be used by Hitachi Chemicals POLYMER Co., Ltd. (product name XY series, etc.), Toho Chemicals Co., Ltd. (product name HIROKKU series, etc.), TreeBond Co., Ltd. (TreeBond (registered trademark) series, etc. Products such as the East Asia Synthetic Chemical Industry Co., Ltd. (AROTAIT (registered trademark) series), CEMEDINE Co., Ltd. (CEMEROKKU (registered trademark) SUPER SERIES, etc.) are not limited thereto. EXAMPLES Hereinafter, a method for evaluating a filter for a PDP of the present invention will be described. (1) Center line average roughness Ra, 10-point average roughness Rz The surface roughness of the filter for PDP was measured using a surface roughness measuring device SE-3 400 (manufactured by Kosuke Research Laboratory Co., Ltd.). Use a filter sample for PDP.  5 square meters were divided into 5 equal parts, and the center portion of each sample was evaluated by the following method. The measurement of each measurement point was carried out in the longitudinal direction and the short-side direction of the film to obtain an average enthalpy. Further, the average enthalpy of the five samples was determined as Ra and Rz 滤 of the PDP filter. Since the filter sheet has a multilayer structure, it is difficult to observe the corrugated structure or adhere to the glass, and it is difficult to cut it. In this case, the layer forming the corrugated structure can be peeled off and used for evaluation. • Measurement conditions: speed is 0 · 5 mm / sec, cutoff 値 is 〇 · 25 mm, measurement length is 8 mm, • Ra : Surface roughness tester SE-3400 (small research institute (stock))定39 200821618 义为Ra's parameters. The measurement was carried out based on the method of JIS B 060 1 - 1 982. • R z : The surface roughness tester S E - 3 4 0 0 (small research institute (stock) system) is defined as the parameter of RzD. The measurement was carried out based on the method of JIS B060 1 - 1 982. (2) Surface corrugation length, surface corrugation width. PDP filter sample. 0. 5 square meters were divided into 5 equal parts, and the center portions of the respective samples were evaluated by the following methods. An aluminum film is vapor-deposited on the surface (corrugated surface) of the PDP filter sample, and an optical microscope is used (measurement machine: inspection, research microscope DMLB HC/LEICA MICROSYSTEMS, ® conditions:. Set the differential interference filter to observe in reflection mode. Optical magnification 50 times) Observe, use a digital camera to obtain a digital image of 1 3 00 x 1 03 0 pixels. The photo image obtained by A4 size printing is used, and the entire corrugated structure in the region of 200 μm X 2 0 μm (the actual size of the corrugated structure) is used to identify the boundary of the corrugated structure from the shading of the image, and the long axis and the short axis are respectively determined. The length of the shaft. The average 値 of the long axis and the short axis of the entire corrugated structure in the evaluation area is obtained. Further, the average enthalpy of the five samples was determined as the 波纹 of the surface corrugation length and the surface corrugation width of the PDP filter. Because of the filtration of the multilayer structure, it is not easy to observe the corrugated structure or it is difficult to cut by bonding to the glass. In this case, the layer forming the corrugated structure can be peeled off and used for evaluation. Further, the long axis is defined as the length of the corrugation and the short axis is the width of the corrugation. (3) Surface ripple occupancy rate by Image-Pro Plus ver.  4. 0 (PLANETRON system) Image processing of the photograph taken in item 2) is performed to obtain the area ratio of the total area of the corrugated structure occupying the area of 200 μm X 2 0 0 micrometer as the surface corrugation occupation ratio. Specifically, the corrugated portion of the photo object area in which the corrugated structure is photographed is blackened with a singular pen, and the photograph taken is taken using a scanner to degenerate the corrugated portion and the non-corrugated portion 2. Next, the area ratio was calculated by the pseudo-color area ratio (Pseudo-Color Areas) processing, and the ratio of the area occupied by the corrugated portion was taken as the surface corrugation occupation ratio. The center portion of the sample 5 was evaluated by the above method to obtain the average enthalpy of the density in the evaluation region. Further, the average enthalpy of the five samples was determined as the surface waviness occupancy of the pDp filter. Since the filter is a multi-layered structure, it is not easy to observe the corrugated structure, or the film having the corrugated structure is attached to the glass and is difficult to be cut. In this case, the layer forming the corrugated structure can also be peeled off. Used for evaluation. (4) Interfacial corrugation length and interface corrugation width The PDP was divided into 5 equal parts by using a spun film sample of 0.5 square meter, and the center portion of each sample was evaluated by the following method. Using an optical microscope (measuring machine: inspection, research microscope DML β H c / l Ε IC A ΜI CR Ο SYSTEMS, condition: transmission mode, optical magnification 50 times, in order to give the corrugated structure contrast, the capacitor system is set at the lowest position ) Observe and use the digital phase machine to obtain a digital image of 1 3 0 0 X 1 0 3 0 pixels. The photographic image obtained by printing in Α4 size and the entire corrugated structure in the region of 200 μm χ200 μm (the actual size of the corrugated structure), the boundary of the corrugated structure is identified from the shading of the image, and the lengths of the long axis and the short axis are respectively determined. . The average 値 of the major axis and the minor axis of the entire corrugated structure in the evaluation region is obtained. Further, the average enthalpy of the five samples was determined as the 波纹 of the interface undulation length and the interface undulation width of the P Ρ filter. Since the filter sheet has a multilayer structure, it may be difficult to observe the corrugated structure or adhere to the glass, and it is difficult to cut it. In this case, the layer forming the corrugated structure may be peeled off and used for evaluation. Also, 4 1 200821618 defines that the long axis is the interface ripple length and the short axis is the interface ripple width. (5) Interface ripple occupancy rate by Image-Pro Plus ver· 4. 0 (PLANETRON system) The image taken in (2) is image-processed to obtain the area ratio of the total area of the corrugated structure occupying 200 μm to 200 μm, as the interface ripple occupancy. Specifically, the corrugated portion in the photo object region formed by the corrugated structure is photographed, blackened with a singular pen, and the photograph taken is taken using a scanner to degenerate the corrugated portion and the non-corrugated portion 2. Next, the area ratio was calculated by the simulation ® Pseudo-Color Areas processing, and the ratio of the area occupied by the corrugations was taken as the interface ripple occupation ratio. The center portion of the sample 5 was evaluated by the above method to obtain the average enthalpy of the density in the evaluation region. Further, the average enthalpy of the five samples was determined as the interface raffinate occupation ratio of the PDP filter. Since the filter has a multilayer structure, there is a case where the corrugated structure is not easily observed, or a film having a corrugated structure is attached to the glass and is difficult to be cut. In this case, the layer forming the corrugated structure can be peeled off and used. For evaluation. ® (6) Interface corrugation height ○ The PDP filter sample was divided into 5 equal parts by 0.5 square meters, and the center of each sample was evaluated by the following method. The sample was placed on a smooth metal plate, and the razor blade was used and cut so that the front end of the blade was tilted by 30 degrees. When there is a corrugated structure between the hard coat layer and the transparent resin layer, the blade is cut from the hard coat surface. When a film having a corrugated structure is bonded to glass, it can be evaluated by peeling off from the glass. Next, using an optical microscope (measurement machine: inspection, research microscope DMLB HC/LEICA 'MICROSYSTEMS system, condition: reflection mode, setting differential interference filter 42 200821618 piece, optical magnification 1 000 times) observation, using digital camera to obtain 13 00x 1 03 0 pixel digital image. The obtained photographic image was magnified 5 times in the thickness direction of the section and printed using the A4 size. The corrugation height is calculated from the shortest distance between the straight line connecting the adjacent small points of the shape line of the corrugated structure and the maximum point (see Fig. 2). The height of the corrugations of all the protrusions observed in the domain region was measured, and the average enthalpy was determined, and the actual size was calculated from the magnification as the protrusion height. Further, the shape line of the interface corrugated structure is identified by the difference in color density of the cross section. ^ Further, the average enthalpy of the five samples was determined as the enthalpy of the interface corrugated structure of the filter sample for PDP. Since the filter sheet has a multilayer structure, there is a case where it is not easy to observe the corrugated structure or it is attached to the glass and it is difficult to cut. In this case, the layer forming the corrugated structure can be peeled off and used for evaluation. (7) Measurement of refractive index The raw material coating agent to be measured was applied to a silicon wafer by using a spin coater so that the dry film thickness became 〇 1 μm. Then, by using an inert oven INH-21CD (manufactured by Koyo Thermo Scientific Co., Ltd.), the film was obtained by heat-hardening at 130 ° C for 1 minute (hardening condition of the low refractive index layer). A refractive index coefficient of 63 3 nm was measured using a phase difference measuring device (manufactured by NIKON Co., Ltd., NPDM-00 0) for the formed film. (8) Measurement of the thickness of the laminate The cross section of the filter sample for PDP was observed by a transmission electron microscope (H-7100FA type manufactured by Hitachi Ltd.) at an acceleration voltage of 100 kV. When a filter of a glass substrate was used, it was evaluated by peeling off from the glass. The sample was adjusted using ultra-thin sectioning. The thickness of each layer was measured by observation at 1 〇荜 or 200,000 times. (9) Optical reflectance and visual transmittance 4 3 200821618 For the filter sample for PDP, the incident light from the observer side is measured at the wavelength using a spectrophotometer (UV3 15 0PC, manufactured by Shimadzu Corporation) The transmittance of the visible light wavelength region (3 800 to 78 () nm) is obtained by the transmittance of the range of 3 00 to 1 300 nm. Further, as described below, the reflectance (single-sided reflection) in the range of the wavelength of 380 to 780 nm from the incident angle of 5 degrees from the measurement surface was calculated to obtain the visual reflectance (as defined in Jis Z870 1 - 1 999). The stimulus of reflection 値Y). In order to eliminate the influence of the reflection from the non-measurement surface of the PDP filter sample, use a water-resistant sandpaper of 3 20 to 400 number to uniformly roughen the non-measurement side to 60° (: gloss 卩132 874 1 ) After 10 or less, the black paint is applied and colored so that the visible light transmittance is 5% or less. The spectroscopic solid angle was measured using a spectrophotometer, and the visibility reflectance (single-sided light reflection) was calculated based on JIS Z8 70 1. The calculation formula is as follows. T = K · SS(A)*y(A). R(A). dA (wherein the integration interval is 380 to 780 nm) T: single-sided light reflectance (%) @ S( λ ): the color indicates the standard light distribution y( A ) used: The isochromatic function R(λ): the spectral solid angle reflectivity. (10) Evaluation of the interference fringe In order to eliminate the influence of the reflection from the back surface, the back surface coloring of the black paint measurement surface (hard coat surface side) was adjusted in the same manner as in the measurement of the visual reflectance of the item (9). Sample 'Place a 3-wavelength fluorescent lamp in the darkroom (NATIONAL PALO ΟΚ 3 wavelength-shaped daylight color (F. L 15ΕΧ-Ν 15 W)) Immediately below the 30 cm, visually inspect the sample while changing the viewpoint to evaluate whether it is possible to visually observe the rainbow pattern at 44 200821618.

• Unable to observe rainbow patterns :A

• Ability to observe very weak rainbow patterns :B

• A rainbow pattern can be observed: The C evaluation is evaluated by five samples of each level, and the highest frequency is used. If there are two judgment results of the highest frequency, the evaluation result of the worse one is used. (The highest frequency is judged as "B" and "B" and "C" when the judgment results are "A" and "B". When it is judged as "C" and β is "A" and "C·", it is judged as "C"). (Π) Evaluation of the reflection The PDP filter sample was placed on the black paper (manufactured by Oji Paper Co., Ltd., AC CARD #3 00) with the observation surface as the surface, and fixed with a transparent tape. A corner. The obtained sample was placed in a dark room in such a manner that the viewing side was perpendicular, and a 3-wavelength fluorescent lamp (NATIONAL PALO OK 3 wavelength-shaped daylight color (FL 1 5 EX-) was placed 50 cm directly above the filter. N 15 W)), visually observing the observation surface of the filter from a distance of 30 cm from the front side, and evaluating the sharpness of the observer's image on the observation surface of the filter.

• The outline of the image is not clear: A

• The outline of the image is slightly unclear: B

• The outline of the image is vivid: The C evaluation is evaluated by five samples of each level, and the highest frequency is used. If there are two judgment results of the highest frequency, the evaluation result of the worse one is used. (The highest frequency is judged as "B" and "B" and "C" when the judgment results are "A" and "B". When it is judged as "C" and "A" and "C", it is judged as "C"). 200821618 (12) Evaluation of the transmission image in the PDP TV (TH-42PX500, Matsushita Electric Industrial Co., Ltd., in which the pure filter is removed), and the back surface (the surface opposite to the observation side) In the manner of facing the PDP panel, the PDP filter is installed in such a manner that the distance from the surface of the PDP panel to the outermost surface of the observation side of the filter is 20 mm, and the surface of the panel and the observation surface of the filter are parallel. Light film sample. The PDP panel of the PDP TV displays the pattern image shown in Fig. 4 (black pattern is arranged on white: size is 5xl〇〇mm). ® The filter (the pattern image is displayed at the position where the filter is set), and the pattern image is visually evaluated to determine the sharpness of the transmitted image. The observation was carried out at a distance of 30 cm from the front side of the observation surface of the filter.

• The transmitted image can be clearly observed :A

• The transmission image is slightly unclear: B

• Transmission image blurring: The C evaluation system evaluated five samples of each level and used the highest frequency determination result. If there are two judgment results of the highest frequency, the result of the evaluation of the worse one is used. (The judgment result of the highest frequency is "A" and "B", and it is judged as "B", "B" and "C". When it is determined that "C" is "A" and "C", it is judged as "C"). Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited thereto. 1. Adjustment of Low Refractive Index Coating (Coating A) 95.2 parts by mass of methyltrimethoxydecane and 65.4 parts by mass of trifluoropropanetrimethoxydecane were dissolved in 300 parts by mass of propylene glycol monomethyl ether, and 46 200821618 parts by mass In isopropyl glycol. While the solution is stirred, a cerium oxide microparticle dispersion having a number average particle diameter of 50 nm and having a cavity inside the outer shell is dropwise added so as to have a reaction temperature of not higher than 3 〇 ° C (isopropyl diol dispersion type, solid) The component concentration was 20.5%, 297.9 parts by mass of Catalyst Chemical Co., Ltd.), 54 parts by mass of water, and 1.8 parts by mass of formic acid, and the obtained solution was heated at a bath temperature of 40 ° C for 2 hours after the dropwise addition. The solution was heated at a bath temperature of 85 ° C for 2 hours, and the internal temperature was raised to 80 ° C. After heating for 1.5 hours, it was cooled to room temperature to obtain a polymer solution A. To the obtained polymer solution A, 4 parts by mass of an aluminum-based hardener (aluminum acetylacetonate) aluminum (trade name: ALUMILATE A (W), KA WAKEN FINE CHEMICAL Co., Ltd.) was dissolved in 125. A solution of the mass of methanol was added, and 15 parts by mass of isopropyl diol and 250 propylene glycol monomethyl ether were added, and the mixture was stirred at room temperature for 2 hours to prepare a coating A. The film of the coating material A was formed on the wafer, and the refractive index obtained by the above method was 1.36. 2. Adjustment of coating material containing coloring material (Coating-1) KAYASORB (registered trademark) IRG-05 manufactured by Nippon Kayaku Co., Ltd., which is used to mix and dissolve 14.5 parts by mass of near-infrared absorbing coloring material in 2000 parts by mass of methyl ethyl ketone. 0, 8 parts by mass of Japan Catalyst (EXCOLOR) (registered trademark) IR-10A, and 2.9 parts by mass of TAP-2 manufactured by Yamada Chemical Industry Co., Ltd., which has an organic colorant with a main absorption peak at 593 nm. It dissolves. This solution was used as a transparent polymer resin binder solution, and was mixed with 2000 parts by mass of HARRUSHIBRID (registered trademark) IR-G20 5 (solid content concentration: 9% solution) made of ruthenium catalyst (manufactured) to prepare paint-1. . 47 200821618 3. Manufacture of hard coated film (HC coating 1)

Mixing 70 parts by weight of a mixture of dipentaerythritol hexaacrylate and dipentaerythritol pentaacrylate (KAYARAD (registered trademark)-DPHA: manufactured by Nippon Kayaku Co., Ltd., 25 parts by mass of trimethylolpropane- Ethylene oxide modified triacrylate (M-3 5 0: manufactured by Toagosei Co., Ltd.), 5 parts by weight of fully alkylated melamine (SAIMEL (registered trademark) C3 03 : manufactured by NIHON CYTEC INDUSTRIES) And 1 part by weight of a phosphate-based catalyst (CATALYST296-9: NI Η Ο NCYTEC IN DUST RI ES) to form a coating composition (HC coating 1). Forming HC coating on the ruthenium wafer 1 After the film is cured by heating at 2 30 ° C for 1 minute, the refractive index determined by the above method is 1.52 (. HC1 ~ 14). A diester (hereinafter referred to as PET, intrinsic viscosity of 0.63 dl/g) wafer was sufficiently dried at 180 ° C for 3 hours. The dried wafer was supplied to an extruder and melted at 2 85 ° C. T-shape • The die is extruded in a sheet form. The extruded resin is wound on a mirror with a surface temperature of 25 °C using electrostatic application. The cast drum was cooled and solidified to form an unstretched film. The unstretched film thus obtained was stretched by 3.5 times in the longitudinal direction using a roll group heated to 95 ° C to obtain a uniaxial pull. Stretching the film. Applying the above-mentioned HC paint 1 on one side of the uniaxially stretched film by using a die coating method, and holding both ends of the film coated with the HC paint 1 to 80 to 100 ° C using a clip. The preheating zone is then stretched by 3.0 to 4.0 times in the width direction in a stretching zone of 90 to 100 ° C, and the surface roughness is adjusted by a leveling zone of 16 0 to 200 ° C before heat treatment. And continuously in the 48 200821618 row 5% width relaxation treatment, while applying heat treatment in the heat treatment zone of 203 ° C for 17 seconds, the coating film is hardened and heat-fixed to obtain a total thickness of 125 μm. a hard coat film having a hard coat layer thickness of 5 μm, a hard coat layer having a refractive index of 1.52, and a PET substrate having a refractive index of 1.64 for obtaining the hard coat film and the obtained hard coat film. Surface roughness and surface corrugated structure and interface between hard coating and PET substrate The data of the surface corrugated structure is as shown in Table 1. (HC 1 5) Using a polyester film for optical use (RUMIRAR (registered trademark) U4 6 from Toray, thickness 100 μm), a commercially available hard coat was used on the easy-adhesive surface. A coating material prepared by diluting isopropyl diol to a solid concentration of 30% by a dicing solution of JSR (DESORAIT (registered trademark) Z752 8), and then dried at 8 ° C for 1 minute and then irradiated with ultraviolet light 1.0. J/cm2 was hardened, and a hard coat layer having a thickness of 5 μm was set to produce a hard coat film HC 1 5 . The data on the surface roughness of the hard coat surface of the obtained hard coat film is as shown in Table 1. (HC16) The optical polyester film (RUMIRAR (registered trademark) U46, thickness: 100 μm) was used. Acrylic resin particles (particle diameter: 5.0 μm, refractive index of 1.53, and 3% by weight of the solid content of the coating agent) were added to the easy-adhesive surface using a commercially available hard coating agent (DESORAIT (registered trademark) Z7528 manufactured by JSR). The resulting material was diluted with isopropyl glycol to a solid concentration of 30%, coated with a micro gravure applicator, and then dried at 80 ° C for 1 minute, then irradiated with ultraviolet light 1. 〇J / cm 2 The hard coat film HC16 was produced by hardening it and setting a hard coat layer having a thickness of 5 μm. The obtained hard coating is as shown in Table 1 for the surface roughness and surface corrugation structure of the hard coating surface of the film. (HC17 to 19) Using a polyester film (U.S. RUMIRAR (registered trademark) U46, thickness: 100 μm), the HC coating 1 was applied to the easy-adhesive surface using a wire bar to form a film thickness of 1 μm. Coating film. The following pattern was pressed on the surface on which the coating film was formed, and the ultraviolet ray was irradiated with 1.0 J/cm 2 from the substrate side to be cured, and the mold was released to obtain a hard coat film having only a surface wave tex structure. On the surface of the obtained hard coat film, the surface roughness and the surface corrugation structure shown in Table 2 were formed. (Mold for HC17) Cross-sectional shape: semi-ellipse (long axis: 30 μm, semi-minor axis: 0 · 1 μm) In-plane pattern: circle (radius: 30 μm) Arrangement: Pattern of Figure 3. (Mold for HC18) Profile shape: semi-elliptical, (long axis: 30 μm, semi-minor axis: 0.2 μm) ® In-plane pattern: circle (radius: 30 μm) Arrangement: Pattern of Figure 3. (Mold for HC19) Cross-sectional shape: semi-ellipse (long axis: 3 〇 micron, semi-minor axis: 1 micron) In-plane pattern: circle (radius: 30 μm) Arrangement: Pattern of Fig. 3. (Mold for HC20) Cross-sectional shape: semi-ellipse (long axis: 3 〇 micron, semi-minor axis: 1.2 μm) In-plane pattern: circle (radius: 30 μm) 50 .200821618 Collocation: Pattern of Figure 3. 4. Electromagnetic wave shielding layer (EMI1) An optical polyester film (RUMIRAR (registered trademark) U 4 6 and a thickness of 100 μm) was used, and the two surfaces were blackened by an adhesive on an easy-adhesive surface. Copper foil with a thickness of 10 microns. The peripheral portion was left and the copper foil was subjected to photolithography to have a line width of 10 μm, a pitch of 300 μm, and an oblique angle of 4 Å. The pattern is latticed. On the obtained mesh portion, ® was left in the peripheral portion, and an electromagnetic wave shielding film (EMI1) was produced by laminating a 20 μm transparent acrylic resin layer. [Example 1] A commercially available high refractive index antistatic coating (manufactured by JSR, OP STAR (registered trademark) TU4005) was diluted with isopropyl glycol to have a solid concentration of 8%, and then coated on the hard coat using a micro gravure coater. The surface of the hard coat layer of the film (HC1) was dried at 120 ° C for 1 minute, and then cured by ultraviolet rays of 1.0 J/cm 2 to form a refractive index of 1.65 and a thickness of 13 5 nm on the hard coat layer. High refractive index layer. Next, on the high refractive index layer forming surface, the low refractive index coating material was applied as a low refractive index layer using a micro gravure coater. Then, by preventing drying at 130 ° C for 1 minute and hardening, and forming a low refractive index layer having a refractive index of 3.6 and a thickness of 90 nm on the high refractive index layer, the antireflection layer is produced. (The anti-reflection layer is referred to as AR1). After the SA NIT ECT (registered trademark) (thickness 50 μm) manufactured by Sun A Co., Ltd. and the protective film of the antireflection layer, the antireflection layer and the opposite side of the substrate film surface were coated with a die coater. The coating 4 was dried at 1 200821618 1 2 ° C to form an infrared cut-off layer having a thickness of 1 μm (this infrared cut-off layer was taken as NIR 1). The organic color correction toner is contained in the acrylic transparent adhesive to adjust the color correction toner adhesive (color correction 1). The amount of toner added at each level was adjusted so that the visual transmittance of the last filter was 40%. The above-mentioned infrared shielding layer was bonded to a glass substrate using the above-mentioned adhesive (color correction 1), and then autoclaved (pressure: MPa 5 MPa, temperature: 70 ° C, treatment time: 1 hour). ® Next, the electromagnetic wave shielding film is bonded to the opposite side of the glass substrate (the surface on which the antireflection layer or the infrared shielding layer is not laminated) by using an acrylic transparent adhesive so that the substrate surface is on the glass side (Ε Μ 1 1 After that, autoclave treatment (pressure: MPa. 5 MPa, temperature: 70 ° C, treatment time: 1 hour) was carried out to prepare a filter for PDP as shown in Table 3. Further, as described above, the color correction layer 1 is adjusted so that the visible transmittance of the produced PDP filter is 40%. The characteristics of the filter for PDP produced are shown in Table 4. The visual reflectance ® rate was 0.9 and the transmittance was 40%. The visual evaluation showed a high suppression effect, a very sharp transmission image, and no interference fringes were observed. [Examples 2 to 14] A filter for P D P was produced in the same manner as in Example 1 except that the constituent layers used for the filter for PDP were changed as shown in Table 3. Further, as described above, the color correction layer 1 is adjusted so that the visible light transmittance of the produced PDP filter is 40%. The characteristics of the filter for P P P produced are shown in Table 4. The visual reflectance of any of the filters was 〇·8 to 1.1, and the transmittance was 40%. Visual evaluation 200821618 The suppression effect was high, the transmission image was extremely sharp, and no interference streaks were observed. [Comparative Examples 1 to 6] A filter for P D P was produced in the same manner as in Example 1 except that the constituent layers used for the filter for PDP were changed as shown in Table 3. Further, as described above, the color correction layer 1 is adjusted so that the visible light transmittance of the produced PDP filter is 40%. The characteristics of the filter for PDP produced are shown in Table 5. Since the surface roughness of Comparative ® Examples 1 and 2 is small, the reflection can be observed relatively clearly. Since the occupation ratio of the corrugated structure of Comparative Example 3 was low, the light diffusion effect was small, and reflection was observed. Further, since Comparative Example 4 had no corrugated structure on the surface or the interface, it was observed that the reflection was observed very clearly. On the other hand, since the anti-glare film was used in Comparative Example 5, the surface roughness was extremely large, and the transmission image was poor in sharpness. Further, in Comparative Example 6, the surface roughness was also large, and the transmission image was poor in sharpness. [Comparative Example 7] A filter for P D P was produced in the same manner as in Example 1 except that the first layer to the sixth layer used in the PDP filter were changed as shown in Table 3. On the sixth layer side of the obtained filter, HC 1 was attached so that the η C layer side was attached to the back side of the filter using an acrylic transparent adhesive, and autoclaving was performed (pressure: 0 · 5 Μ P). a, temperature · 70 C, processing time: 1 hour). Further, as described above, the color correction layer 1 is adjusted so that the visible transmittance of the prepared filter for p D P is 40%. The characteristics of the filter for PDP produced are shown in Table 5. Since the obtained filter had no corrugated structure on the observation side surface, reflection was observed. 53 .200821618

Film forming conditions: stretching ratio inch rn inch inch cn VO rn v〇rn inch rn inch rn mm (N ΓΠ (N ΓΠ 00 rn OO rn inch rn 1 1 leveling temperature 〇〇 gr*H jn iH g T* - ^ g tr> oo 170 1—H 170 SF—Η Η家Η 200 gr*-H 1 1 Stretching temperature ΡO r—4 o ί < o 〇ρ· H o ο r-^ Ο 〇τ- Η 〇Ρ < 〇〇Ρ < ο 1—Η 0 1 < 1 1 Preheating temperature 〇〇 oo sgo TH 1 1 Interface corrugated structure (*3) Height micro odo ο oi νΊ CN rn m ο o ο ο Occupancy gggggggg >r> ο ο Length nano 沄ο ο 〇ο ο Width to move s ο Surface corrugated structure (*2) Occupancy g § gg § gg § § VO in ο ο Length micro ο ο o O ο ο Width micron contamination ο Surface roughness (*1) Nano g 200 § r Η ο 1—^ 250 〇rH (N 200 280 ο o § g 1500 cd Nano CN o § i£ Ο Ο § mo ο 1-4 HC1 HC2 HC3 HC4 HC5 HC6 HC7 HC8 HC9 HC10 HC11 HC12 HC13 HC14 HC15 HC16 200821618

s Film forming conditions Stretching ratio 1 1 1 1 Leveling temperature P 1 1 1 1 Stretching temperature P 1 1 1 1 Preheating temperature P 1 I 1 1 Interfacial corrugated structure (*3) Height micron enthalpy occupancy 〇〇〇〇 Length Nano 〇〇〇〇Μ Nano 〇〇〇〇 Surface Corrugated Structure (*2) Occupancy g § Length Micron I m Micron Surface Roughness (*1) Nano 〇T—Η 950 丨1100 nm τ-Η HC17 HC18 HC19 HC20 , 200821618 Table 3

1st layer 2nd layer 3rd layer 4th layer 5th layer 6th layer 7th layer Embodiment 1 AR1 HC1 NIR1 Color correction 1 Glass ΕΜΙ 1 Example 2 AR1 HC2 NIR1 Color correction 1 Glass ΕΜΙ 1 Example 3 AR1 HC3 NIR1 color Correction 1 Glass crucible 1 Example 4 AR1 HC4 NIR1 Color correction 1 Glass crucible 1 Example 5 AR1 HC5 NIR1 Color correction 1 Glass crucible 1 Example 6 AR1 HC6 NIR1 Color correction 1 Glass crucible 1 Example 7 AR1 HC7 NIR1 Color correction 1 Glass crucible 1 Example 8 AR1 HC8 NIR1 Color Correction 1 Glass ΕΜΙ 1 Example 9 AR1 HC9 NIR1 Color Correction 1 Glass ΕΜΙ 1 Example 10 AR1 HC10 NIR1 Color Correction 1 Glass ΕΜΙ 1 Example 11 AR1 HC11 NIR1 Color Correction 1 Glass ΕΜΙ 1 Example 12 AR1 HC17 NIR1 Color Correction 1 Glass crucible 1 Example 13 AR1 HC18 NIR1 Color correction 1 Glass crucible 1 Example 14 AR1 HC19 NIR1 Color correction 1 Glass crucible 1 Comparative example 1 AR1 HC12 NIR1 Color correction 1 Glass crucible 1 Comparative example 2 ARI HC13 NIR1 Color correction 1 Glass crucible 1 Comparative example 3 AR1 HC14 NIR1 Color Correction 1 Glass ΕΜΙ 1 Comparative Example 4 AR1 HC15 NIR1 Color Correction 1 Glass Ε Ι1 Comparative Example 5 AR1 HC16 NIR1 Color correction 1 Glass ΕΜΙ1 Comparative Example ό AR1 HC20 NIR1 Color Correction glass ΕΜΙ1 1 Comparative Example 7 AR1 HC15 NIR1 Color Correction 1 glass ΕΜΙ1 HC1 56 .200821618

Inch c optical property visual reflectance os 〇〇〇ON 〇Os 〇ON 〇as 〇p 〇t> 〇·, ON o ο transmission image <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<;<<< PQ PQ CQ interface ripple structure (*3) « 岖micro ο 〇〇m (N ^T) <Ν ο 〇o Occupancy rate ggg § ggg SS g ο oo Mο ο oo width nano ο oo surface corrugated structure (.) occupancy § g § ggggg § g § g § g length micron width micro surface roughness (*1) nano g 200 S 〇»〇Ϊ- 170 250 210 200 280 s ο τ-Η 950 1 〇S 2 〇〇g 〇cn Example 1 Example 2 Example 3 Example 4 Example 5 1 Example 6 Example 7 Example 8 Example 9 Example 10 Embodiment 11 Embodiment 12 Embodiment 13 Embodiment 14 .200821618

Optical properties Visual reflectance 00 〇00 d OS o Inch ο r—( inch Ο transmission image <<<< U Ο C in CQ CQ CQ U << OQ interference fringe PQ OQ U Ο &lt CQ U interface corrugated structure (*3) « 岖 micron cn mdo ο ο ο occupancy JO JQ ο ο ο g length nano ο 〇o ο ο ο m nano s ο ο ο surface corrugated structure (*2) Into VQ ο ο g ο Interference fringe micron ooo ο ο ο Width micron 宕 ο ο ο Surface roughness (*1) c2 Nano o rH os 1500 1100 Word nano mo ο τ-Η ο Comparative example 1 Comparative example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example ό Comparative Example 7. Streptamine 1 ^ 虼 虼 虼 虼 伽 伽 伽 伽 剡 & & & & & & & & & & & & & & & & & & & & & & According to the present invention, it is possible to provide a filter for PDP which is excellent in transmission image and has a reflection preventing effect. According to a preferred aspect of the present invention, it is possible to provide a filter for a PDP which is more resistant to interference fringe. Fig. 1 is a pattern diagram of a corrugated structure. Fig. 2 is a diagram for defining a corrugation height. Fig. 3 is a diagram of a mold used for manufacturing a surface corrugated structure by a molding method (Fig. (b) is a diagram (a) ) AA section arrow view) [Component symbol description] 1 2 3 4 5

7 8 Surface corrugated structure Interface corrugated structure Maximum point Minimum point Corrugation height Corrugation length Corrugation width Long axis 9 Semi-short axis -59-

Claims (1)

200821618 X. Patent application scope: 1. A calendering sheet for plasma display, which has a center line average roughness Ra of 15 to 100 nm on the outermost surface of the observation side and the outermost surface of the observation side. 10 point average roughness Rz is 50~1 000 nm, surface waviness width is 1~100 μm, surface corrugation length is 1~500 μm, and surface ripple occupancy is 60~100% surface ripple structure. 2. The filter for plasma display according to the first aspect of the patent application, wherein the filter has a Φ complex functional layer, and has an interface ripple width of 1 to 100 μm at one or more interfaces. The interfacial corrugation structure has an interface corrugation length of 1 to 500 μm, an interface corrugation height of 0.05 to 3.0 μm, and an interface corrugation occupation ratio of 60 to 100%. 3. The filter for plasma display according to the second aspect of the patent application, wherein a filter layer is laminated on the observation side of the transparent resin layer, and a reflection preventing layer is further laminated thereon, and The interface between the hard coat layer and the transparent resin layer has the interface corrugated structure. φ 4. The filter for plasma display according to item 3 of the patent application, wherein the transparent resin layer is a polyester film. A method for producing a filter for plasma display, which is a method for producing a filter for plasma display according to claim 3 or 4, which has a hard coat composition coated on a transparent resin layer and then The step of hardening the hard coat composition after stretching in at least one direction. A plasma display device in which a filter for plasma display according to any one of claims 1 to 4 is attached to a display surface of a plasma display panel. -60-200821618 7. The electric paddle display of claim 6, wherein the distance from the surface of the plasma display panel to the outermost surface of the observation side of the filter for plasma display is 2 to 20 mm.