JPH08152512A - Image forming method and production of color filter - Google Patents

Abstract

PURPOSE: To obtain an image forming method which is short in stages and high in productivity and realizes a cost reduction while decreasing unequal colors, i.e., maintaining high display quality. CONSTITUTION: A transfer body 20 formed by providing the surface of a substrate 16 with a photosensitive colored transfer layer 18 which is improved in the adhesion property to the substrate by irradiation with radioactive rays is superposed on the surface of a body 14 to be transferred and formed by providing the surface of a base plate 10 with an adhesive layer 12 in such a manner that the photosensitive colored transfer layer 18 and the adhesive layer 12 come into tight contact with each other. The points exclusive of the image patterns to be formed are irradiated with radioactive rays and thereafter, the irradiated parts 30 of the substrate 16 and the photosensitive colored transfer layer 18 are peeled from the body to be transferred, thereby, the non-irradiated parts of the photosensitive colored transfer layer 18 are formed on the body to be transferred.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming method for forming images such as characters and figures on various substrates such as paper and glass plates, and a color liquid crystal display device and a color video camera utilizing this method. The present invention relates to a method for manufacturing a color filter for color separation used in a solid-state image sensor such as.

[0002]

2. Description of the Related Art Color filters for color separation are used in color liquid crystal display devices such as computer displays, color television sets, color monitors, and solid-state image pickup devices such as color video cameras. Various methods have been proposed so far as methods for manufacturing color filters used in these liquid crystal display devices, and representative methods include (1) dyeing method, (2) pigment dispersion method, and (3) electrodeposition. Method, and (4) printing method.

(1) The dyeing method is to provide an easily dyeable transparent layer and a photosensitive resin layer on a transparent substrate, form a desired pattern by using a photolithography technique, and dye each color. By virtue of the above, that is, after forming a pattern for red, it is dyed in red, then, after forming a pattern for green, it is dyed in green, and after forming a pattern for blue, it is dyed in blue to form a color filter. It is manufactured.

(2) In the pigment dispersion method, a photosensitive resin in which a pigment such as a pigment or a dye is dispersed is coated on a transparent substrate, and a desired coloring pattern such as green, red, and blue is sequentially formed according to a conventional method. To form. (3) In the electrodeposition method, after forming a desired pattern composed of a transparent conductor layer on a transparent substrate, a solvent in which a polymer resin containing a dye is dispersed is energized while energizing only the pattern to be colored. It is electrodeposited to form a colored pattern. (4) The printing method uses offset printing, screen printing, or the like, in which ink is placed on a metal on which a printing pattern is drawn, transferred to a rubber blanket, and then transferred onto a substrate to manufacture a color filter. is there.

[0005]

However, none of the above methods is always satisfactory as a method of manufacturing a color filter. That is, (1)
Since the dyeing method and the (2) pigment dispersion method utilize photolithography technology, they can be manufactured stably with high resolution or accuracy. However, the photosensitive resin is used only for pattern formation of one color. Process such as coating, soft bake, pattern exposure, development, dyeing (in the case of dyeing method), water washing, drying, hard bake, etc., and there are multiple colors, namely red, green, blue (or even black) In order to manufacture a color filter composed of a pattern, it is necessary to repeat these steps a plurality of times, which is complicated. Further, the application of a photosensitive resin and the soft baking and hard baking thereof require a relatively long time. It is difficult to reduce the time.

Further, the coating of the photosensitive resin in the pigment dispersion method is conventionally performed by a spinner, but only a few percent of the dropped resin is used as a coloring layer, and most of the photosensitive resin is used. Resin is discarded. Further, since these manufacturing methods include a wet development step, it is necessary to provide a treatment facility for waste liquid and the like, and it is generally difficult to improve productivity and reduce costs. Further, it is considered that it will be difficult to uniformly coat the photosensitive resin against the future increase in the size of the substrate.

(3) In the electrodeposition method, a transparent conductor layer (for example, ITO (Indium-tin-Oxide)) is formed on a transparent substrate,
After microfabrication according to the color pattern, the color material is electrodeposited by energizing the transparent conductor layer for each color, so the film thickness can be controlled by the applied voltage, and thermosetting resin as the binder of the dye. Since it can be used, heat resistance, light resistance, and chemical resistance can be improved. Further, since it is immersed in an electrodeposition bath to be colored, it has an advantage that a substrate can be made larger. However, in the transparent conductor layer, the terminals are connected between the same colors so that the pixels are connected to each other, and the pixels should not be connected between the different colors, so that the pixel shape and the pixel arrangement are restricted, and the transparent conductor layer is transparent. Very sophisticated fine processing technology is required for patterning the conductor layer. Therefore, it is difficult to improve the yield or reduce the cost.

(4) The printing method has the great advantages that the photolithography technique such as coating, exposure, and development of the photosensitive resin is unnecessary, so that the manufacturing process is short, the manufacturing cost is low, and the mass productivity is excellent. The printing ink is bleeding,
It is difficult to maintain the shape and position of the colored pattern with high accuracy, and the sectional shape of each formed colored pattern is uneven, so the thickness is not uniform as a whole and color unevenness easily occurs, improving display quality. It is difficult to let

Further, although there is a transfer method,
According to this method, a means such as printing is used to form a desired color pattern as the transfer layer of the transfer foil,
Since the precision with which a precise pattern can be formed by printing is about 10 μm, it is difficult to form a pattern with a precision higher than this precision. Also, when trying to transfer a specific portion as a transfer layer of the transfer foil to a predetermined position of the transfer target, it is necessary to accurately determine the positions of the transfer layer and the transfer target, but When it becomes fine, there is a problem that it takes a great deal of time to perform accurate positioning, and the efficiency, which is a characteristic of the transfer method, is impaired.

The present invention has been made in order to solve the above-mentioned problems, and it is a method of manufacturing a color filter capable of reducing the color unevenness, that is, maintaining high display quality, and having a short process, high productivity, and cost reduction. It is also an object of the present invention to provide an image forming method that can be used in the manufacturing method of the color filter.

[0011]

The image forming method of the present invention is a photosensitive coloring in which the adhesion to a support is improved by the irradiation of radiation on the surface of a transfer target having an adhesive layer provided on a substrate. Transfer the transfer layer with the transfer layer on the support so that the photosensitive colored transfer layer and the adhesive layer are in close contact, and irradiate the area other than the image pattern to be formed with radiation, and then transfer the support and the photosensitive colored transfer layer. It is characterized in that the irradiated portion of the layer is peeled off from the transferred material, and the non-irradiated portion of the photosensitive colored transfer layer is formed on the transferred material.

Here, the photosensitive coloring transfer layer is preferably composed of a photosensitive coloring composition containing an acrylic resin, a pigment, a dispersant, a photopolymerizable monomer and a photopolymerization initiator as main components. .

The method of manufacturing a color filter of the present invention comprises (A) a pretreatment step of a transfer-receiving member in which an adhesive layer is provided on the substrate, and (B) adhesion of the support to the support by irradiation with radiation. The step of stacking the transfer body provided with the photosensitive colored transfer layer so that the photosensitive colored transfer layer is in close contact with the adhesive layer of the transferred body, and irradiating the area other than the colored pattern to be formed with radiation A colored pattern forming step comprising an exposure step and a peeling step of peeling the support and the irradiated portion of the photosensitive colored transfer layer from the transferred material to form the non-irradiated photosensitive colored transfer layer on the transferred material. It is characterized by having.

Here, the photosensitive coloring transfer layer is preferably a photosensitive coloring composition containing an acrylic resin, a pigment, a dispersant, a photopolymerizable monomer and a photopolymerization initiator as main components.

According to a fifth aspect of the present invention, there is provided a method of manufacturing a color filter according to the third aspect, wherein the colored pattern forming step is performed a plurality of times to form a plurality of colored patterns.

In the present invention, radiation is not limited to that emitted from radioactive elements, and visible light,
It is meant to include light such as ultraviolet rays.

[0017]

The present invention will be described in detail below. In the image forming method of the present invention, as shown in FIG.
0, a transfer-receiving body 14 including an adhesive layer 12 obtained by applying an adhesive on the substrate 10 and drying the support, a support 16 and a photosensitive coloring transfer layer 18 provided on the support 16. And the transfer body 20 is used.

In the image forming method of the present invention, first,
The transfer body 20 is superposed on the transferred body 14 so that the adhesive layer 12 and the photosensitive colored transfer layer 18 are in close contact with each other. At this time, the adhesive layer 12 exhibits tackiness, and the adhesive force between the support 16 of the transfer body 20 and the photosensitive coloring transfer layer 18 is such that weak vibration is imparted or naturally the photosensitive coloring transfer is performed. The layer 18 does not peel off from the support 16.
Therefore, the support 16 of the transfer body 20 and the photosensitive colored transfer layer 1
8 is F ₁ , and the adhesive force between the photosensitive colored transfer layer 18 and the adhesive layer 12 on the transferred material 14 is F ₂ .
The relationship between the two adhesive forces before irradiation with radiation, that is, light such as visible light and ultraviolet light, satisfies the following equation. F ₁ <F ₂ Therefore, if the support 16 is peeled from the transfer target 14 without irradiating the photosensitive color transfer layer 18 with radiation, the photosensitive color transfer layer 18 is peeled from the support 16 and the adhesive It will remain on layer 12.

The photosensitive colored transfer layer in the present invention is cured and agglomerated by being irradiated with radiation such as light (ultraviolet rays) to improve the adhesion with the support 16.
When the adhesive force between the photosensitive colored transfer layer in the exposed portion and the support 16 is F ₁ ′, the relationship of the following equation is satisfied. F ₁ ′> F ₂ As a result, when the support 16 is peeled off from the transferred material 14 after the photosensitive colored transfer layer 18 is partially irradiated with radiation, the exposed portion of the photosensitive colored transfer layer 18 is exposed. Is peeled off from the transferred body 14 together with the support 16, and since the adhesion strength with the support 16 does not change in the unexposed portion,
Even if the support 16 is peeled off, the support 16 remains on the adhesive layer 12.

According to the present invention, the magnitude of the adhesive force between the support 16 and the photosensitive colored transfer layer 18 and between the photosensitive colored transfer layer 18 and the adhesive layer 12 as described above and the adhesive force due to the irradiation of radiation are shown. It uses change. Therefore, if the exposure adjustment corresponding to the image pattern to be formed is performed, it is possible to form the image corresponding to the image pattern to be formed. For this exposure adjustment, it is convenient and preferable to use a mask which is made of a material that does not transmit the radiation to be used and in which a transmissive portion is formed corresponding to a portion other than the image pattern.

That is, the transfer body 20 is placed on the transfer body 14.
The photosensitive colored transfer layer 18 is in close contact with the adhesive layer 12, and the transfer member 20 is covered with a mask 22 as shown in FIG. Accordingly, in the exposed portion 30 of the photosensitive colored transfer layer 18 corresponding to the transparent portion 26 of the mask 22, the support 16
While the adhesion force (F ₁ ') with the support 16 becomes stronger, the adhesion force (F ₁ ) with the support 16 at the non-exposed portion 28 of the photosensitive colored transfer layer 18 corresponding to the shielding portion 24 of the mask 22 is the adhesive agent. Layer 12
It is smaller than the adhesion (F ₂ ) with. When the support 16 is peeled off in this state, as shown in FIG. 1C, the exposed portion 30 of the photosensitive colored transfer layer is peeled off while being kept in close contact with the support 16 and the non-exposed portion of the photosensitive colored transfer layer 18 is removed. The exposed portion 28 is in close contact with the adhesive layer 12 and remains on the transferred body 14. Therefore, by shielding the image pattern to be formed and irradiating the area other than the image pattern with radiation, the photosensitive coloring transfer layer is transferred onto the transfer target 14 according to the shielding portion, and an image pattern having the same shape as the shielding portion is formed. It is formed.

As the image forming method, any material such as paper or metal can be applied to the substrate 10, but the substrate may be a glass plate, stretched polyethylene or polypropylene.
When a transparent material such as an acrylic resin is used and the material used as radiation such as light is transparent, the radiation direction of the radiation applied to the photosensitive colored transfer layer is not necessarily above the support 16. It is not necessary to irradiate from below, and if the radiation reaches the photosensitive colored transfer layer, it may be irradiated from below the substrate 10. In that case,
As a matter of course, the mask is arranged below the substrate 10.

Further, in the above description, the mask is used to irradiate the radiation only to areas other than the image pattern, but it is not always necessary to use the mask, and a controlled light beam is scanned. Therefore, the radiation may be applied only to the necessary portions.

By applying the above-mentioned image forming method, a color filter can be manufactured. That is, first, an adhesive layer is provided on a transparent substrate such as glass, and this is used as a transfer target. Further, a transfer body is prepared in which a photosensitive colored transfer layer whose adhesion to the support is improved by irradiation of radiation is provided on the support. At this time, the color of the photosensitive color transfer layer is colored according to each color pattern of the color filter. Then, the photosensitive colored transfer layer is overlaid so as to be in close contact with the adhesive layer of the transfer target. Next, radiation is applied to a portion other than each colored pattern to be formed.
After that, the irradiated portion of the support and the photosensitive colored transfer layer is peeled off from the transferred material, and the non-irradiated portion of the photosensitive colored transfer layer is formed on the transferred material. Thus, as shown in FIG. 2A, the coloring pattern 32r of one color type is formed.

A contact step of superposing the transfer member on the support so as to be in close contact with the support, an exposure step of irradiating with radiation, an irradiation portion of the support and the photosensitive colored transfer layer are separated from the transfer target, and no irradiation is performed. By changing the color of the photosensitive coloring transfer layer and repeating the coloring pattern forming step consisting of a peeling step of forming a part of the photosensitive coloring transfer layer on the transfer receiving material, each coloring pattern of a plurality of colors is predetermined. The color filter formed at the position is formed. That is, as shown in FIG. 2A, for example, after the red colored pattern 32r is formed at a predetermined position, the color type of the photosensitive colored transfer layer is changed to use, for example, a green photosensitive colored transfer layer. Similarly, FIG. 2 (b)
32g of green colored pattern at a predetermined position as shown in
Similarly, using, for example, a blue photosensitive coloring transfer layer, as shown in FIG. 2C, a blue coloring pattern 32 is formed.
By forming b at a predetermined position, a color filter in which each of the three colored patterns is formed at a predetermined position on the same plane is manufactured.

As described above, according to the color filter manufacturing method of the present invention, it is possible to form colored patterns of a plurality of colors in a very short process. Since the adhesive layer 12 plays the role of a cushion after the second color, even if the pattern of another color exists on the adhesive layer 12 and the surface of the transferred material 14 is not a flat surface, Adhesion is maintained when the 20 layers are stacked. If the black matrix 38 is previously formed on the substrate 10, the pattern shape formed on the mask is slightly enlarged, so that the black matrix 38 and the end portions of the respective colored patterns 32 overlap each other. Defects such as the positional deviation of are further reduced.

Although the black matrix 38 is previously formed on the substrate 10 in FIG. 2, it may be formed after the colored patterns of all colors are formed. In addition, as the color filter, after the colored patterns and the black matrix of all colors are formed, post-baking is performed to completely cure the resin and the adhesive layer forming the pattern, and then, as shown in FIG. As shown
The protective layer 34 is applied evenly and cured, and then, as shown in FIG.
As shown in (e), a manufacturing process such as forming the electrode 36 is added. Alternatively, the electrode may be directly formed on the pattern without forming the protective layer.

As in the present invention, there are many materials such as a support, a photosensitive color transfer layer, an adhesive layer, a substrate, and the like, and combinations thereof, which change depending on the magnitude of the adhesive force and the exposure, but especially in the final case. When used as a color filter for a liquid crystal display device or a solid-state image sensor, it is preferable to use a material that is high in quality and low in price and is not harmful to people or the environment in the manufacturing process.

Photosensitive coloring transfer layer 1 constituting transfer member 20
8 and the support 16, the photosensitive colored transfer layer 18 includes an acrylic resin, a pigment, a dispersant, a photopolymerizable monomer, a photopolymerization initiator, and a solvent as main components, and radiation such as visible light and ultraviolet rays. It is compounded so as to be cured by reactions such as polymerization, cross-linking and dimerization caused by the irradiation of (1) to improve the adhesiveness with the support 16, and a composition mainly composed of a radiation curable resin by light etc. is applied. To be done.

As the acrylic resin, about 3 to 5 kinds of acrylic acid, methacrylic acid, methyl acrylate, alkyl methacrylate such as methyl methacrylate, cyclic acrylate or methacrylate, hydroxyethyl acrylate or methacrylate are selected. A resin synthesized using a monomer to have a molecular weight of about 5,000 to 100,000 can be applied.

As the pigment, for example, for red,
CIPig. 9, 97, 122, 123, 149, 168,
177, 180, 192, 215, etc., CIPig.7, 36 for green, CIPig.1 for blue
5: 3, 15: 6, 22, 60, 64, for yellow, CI Pig. 12, 20, 83, 86, 138, 13
For CI, 154 and purple, CI Pig.23 can be used.

As the dispersant, a wide range of dispersants such as surfactants, pigment intermediates, dye intermediates, and sol sparse are used. The composition ratio during dispersion is not particularly limited, but the amount of the pigment added is about 50 to 150 parts by weight with respect to 100 parts by weight of the acrylic resin for dispersion, and the dispersant is 1 part with respect to 100 parts by weight of the pigment. It is about 10 parts by weight. In addition, for spectral adjustment of the color filter, arbitrary pigments are mixed and adjusted at 2-3 points.

The photopolymerizable monomer includes bifunctional, trifunctional and polyfunctional monomers. As a bifunctional monomer,
Examples include 1,6-hexadiol diacrylate, ethylene glycol diacrylate, neopentyl glycol diacrylate, and triethylene glycol diacrylate. Trifunctional monomers include trimethylolpropane triacrylate, pentaerythritol triacrylate, and tris (2-hydroxyethyl) isocyanate. Examples of polyfunctional monomers include ditrimethylolpropane tetraacrylate, dipentaerythritol penta, and hexaacrylate. These monomers are available from Showa Highpolymer Co., Ltd., Toa Gosei Co., Ltd.,
There are commercial products such as Nippon Kayaku Co., Ltd., and suitable products may be used alone or in combination. The addition amount of the photopolymerizable monomer is not particularly limited, but is 20 to 150 parts by weight with respect to 100 parts by weight of the acrylic resin for dispersion.

As the photopolymerization initiator, triazine compounds, 2,4,6-tris (trichloromethyl) -s-triazine, 2- (p-methoxystyryl) -4,6-bis (trichloromethyl) -s are used. -Triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-chlorophenyl) ) -4,6-Bis (trichloromethyl) -s-
Triazine, 2- (4'-methoxy-1'naphthyl)-
4,6-bis (trichloromethyl) -s-triazine and the like. Further, as the imidazole type, 2- (2,
3-dichlorophenyl) -4,5-diphenyl-imidazole dimer, 2- (2,3-dichlorophenyl) -4,
5-bis (3-methoxyphenyl) -imidazole dimer, 2- (2,3-dichlorophenyl) -4,5-bis (4-methoxyphenyl) -imidazole dimer, 2-
(2,3-Dichlorophenyl) -4,5-bis (4-chlorophenyl) -imidazole dimer, 2- (2,3-dichlorophenyl) -4,5-di (2-furyl) -imidazole, 2,2 '-Bis (2-chlorophenyl) -4,5,
4 ', 5'-tetraphenyl-1-2'-biimidazole,
HB22 (Hodogaya Chemical Co., Ltd.) is available.

As the photopolymerization initiator other than the above,
Irgacure 907,651 (benzyl dimethyl ketal), 184 (Ciba-Gaigi Co., Ltd. product name), Dieterthioxanthone (Nippon Kayaku Co., Ltd.), benzophenone, etc. can be used, and a plurality of these can be mixed. Can also be used. The addition amount of the photopolymerization initiator is not particularly limited, but it is 1 per 100 parts by weight of the total resin.
-50 parts by weight, preferably 5-30 parts by weight are used by adding one or two kinds.

As the solvent, toluene, xylene, ethyl cellosolve, ethyl cellosolve acetate, dicryme, cyclohexanone, etc. are used. However, since it depends on the composition of the resin monomer, the photopolymerizable monomer, the photopolymerization initiator, etc., a single solvent or a plurality of solvents may be used. A solvent having a solvent composition of is appropriately selected.

The support 16 is preferably made of a material that is stable to heat, chemicals, light, etc., and at the same time transmits radiation. For example, polyethylene terephthalate, polypropylene,
It is a film or sheet of triacetate, cellulose acetate, polystyrene, polyvinyl chloride, polycarbonate, polyimide or the like. In particular, polyester films and polypropylene films (biaxially stretched) are excellent in transparency, heat stability, strength and dimensional stability,
It is preferable because it has an appropriate adhesion to the photosensitive colored transfer layer 18. These sheets may be used as they are, but may be subjected to appropriate primer treatment, corona discharge treatment, low temperature plasma treatment, or peeling treatment to control the adhesion. The thickness of the support is preferably about 5 μm to 100 μm. Particularly preferably 10 to 50 μ
It is about m.

Coating of the photosensitive colored resin solution, which constitutes the photosensitive colored transfer layer 18, in which a pigment or the like is dispersed, on the support 16 is carried out by a gravure coater, a gravure offset coater,
A gravure reverse coater, a bar coater, a lip coater, a knife coater, a spinner, a silk screen or a roll coater can be used. The non-volatile components and the amount thereof contained in the solution at the time of coating may be appropriately selected depending on the target layer thickness and the type of coater, and the layer thickness after drying is 0.5 to 3 μm, particularly 1 to 1.5 μm. Is preferred.

The transferred material 14 includes the adhesive layer 12 and the substrate 10.
The adhesive layer 12 has adhesiveness at all times or with heat or pressure, and exhibits sufficient adhesive force with the photosensitive colored transfer layer 18 to satisfy a predetermined condition. . As described above, the predetermined condition is the relationship between the adhesive force between the support 16 and the photosensitive colored transfer layer 18 in the transfer layer 20 before and after exposure to radiation. Further, those having thermoplasticity and having colorless and transparent properties that do not interfere with the display quality of the color filter after thermosetting are preferable. The adhesive layer 12 satisfying these characteristics is preferably a mixture of a thermoplastic resin, a plasticizer, a tackifier and the like as appropriate. For example, as the thermoplastic resin, polyethylene terephthalate resin, polystyrene resin, acrylic resin, methacrylic resin, butyral resin, polyvinyl butyral resin, polyvinyl acetate resin,
Examples thereof include polyvinyl chloride resin, urethane resin, and cellulose resin. As a plasticizer, dibutyl phthalate,
Dicyclohexyl phthalate, diheptyl phthalate,
Dioctyl phthalate, polyethylene glycol, polypropylene glycol and the like can be mentioned. Further, various known tackifiers can be used.

As the substrate 10, various materials can be applied depending on the application, but it is necessary to have a sufficient adhesive force with the adhesive layer 12. Further, the color filter needs to have optical transparency and sufficient strength. For example, transparent glass or plastic that is usually used as a substrate for a color filter can be used. These materials may be subjected to a primer treatment in order to enhance the adhesion with the adhesive layer 12. Examples of the primer treatment include a treatment of the glass surface with a silane coupling agent or the like. In the present invention, the adhesive force between the substrate 10 and the adhesive layer 12 needs to be sufficiently stronger than the adhesive force between the support 16 and the photosensitive colored transfer layer 18 in the transfer body 20 before and after exposure to radiation. It is necessary to apply a material that satisfies the above conditions and a primer treatment.

For applying the adhesive to the substrate 10, known coating methods such as spinner coating, spray coating, roll coating, gravure coating and blade coating may be used. If necessary, the adhesive layer 1
You may dilute with a solvent or a diluent in order to adjust the viscosity of 2. The adhesive layer 12 is formed by coating and then drying, and the layer thickness at this time is 0.1 to 50 μm, and particularly 1 μm to 20 μm has a necessary and sufficient adhesion, and at the same time has an effect on the transparency of the color filter. It is preferable because it is less.

The superposition and close contact of the transfer body 20 with the transferred body 14 are performed by a known laminator. A normal laminate, a heat laminate, a vacuum laminate, or the like may be used, and care should be taken so that air bubbles and wrinkles do not enter.

[0043]

EXAMPLES Color filters were manufactured using the method of the present invention. A heat-sensitive adhesive (No. 28-18-3, manufactured by Toyo Ink Co., Ltd.) was used as an adhesive layer of the transferred material, and this was applied onto a transparent glass substrate with a spinner, and the temperature was 40 ° C.
And dried to prepare a transferred material. The thickness of the adhesive layer was 20 μm. In addition, a photosensitive pigment-dispersed resist for a red filter (manufactured by Fuji Hunt: CR6000) was applied as a photosensitive colored transfer layer onto a support made of a biaxially stretched polyethylene terephthalate film having a thickness of 25 μm by a wire bar coater. And dried at 70 ° C. to prepare a red filter transfer body. The thickness after drying is 1.2 μm
Met. Similarly, a photosensitive pigment dispersion resist for a green filter (CG5111 manufactured by Fuji Hunt), a photosensitive pigment dispersion resist for a blue filter (CB60 manufactured by Fuji Hunt).
00) was used to produce a green filter transfer body and a blue filter transfer body, respectively.

Then, the transferred material is heated at 100 ° C.,
After expressing the tackiness on the surface of the adhesive layer, the photosensitive colored transfer layer of the prepared red filter transfer member was brought into close contact with the surface of the adhesive layer so as to prevent wrinkles and bubbles from entering. Further, a chrome mask formed by forming a color filter pattern on a glass substrate was superposed on the support of the transfer body.
Then, from the support side of the transfer body, 300 mj / cm using an ultraviolet exposure machine (Oak Seisakusho: UV-330AP1)
^{The second} exposure was performed to enhance the adhesion between the support and the photosensitive colored transfer layer in the area corresponding to the mask transmission area. Then, the support of the transfer layer was peeled off by 180 ° peeling, and the exposed portion of the photosensitive colored transfer layer was removed together with the support to form a red pattern of the color filter.

Subsequently, the photosensitive colored transfer layer of the transfer member for the green filter is brought into close contact with the adhesive layer of the transfer member on which the red pattern is formed, and the green filter pattern for the green filter pattern is attached on the support of the transfer member. A chrome mask was overlaid, ultraviolet rays were irradiated in the same manner as above, the support was peeled off, and a green pattern was formed.

Further, the photosensitive colored transfer layer of the transfer body for the blue filter is brought into close contact with the adhesive layer of the transfer body on which the red and green patterns are formed, and the pattern of the blue filter is formed on the support of the transfer body. A chrome mask for the same was overlaid, and ultraviolet rays were irradiated in the same manner as above, the support was peeled off, and a blue pattern was formed.

Then, post-baking was carried out at 230 ° C. for 60 minutes to prepare a color filter having a pattern of three colors of red, green and blue.

[0048]

According to the image forming method and the color filter manufacturing method of the present invention, the number of steps required for forming an image or a colored pattern is small, the time in each step is short, and the cost is greatly reduced. You can Moreover, each process is simple, yet highly accurate and highly productive. In addition, the thickness of the colored pattern can be reduced, and even if a plurality of images or colored patterns are formed in one plane, no problem occurs, and the photosensitive colored transfer layer uniformly applied and formed can be directly transferred. As a result, an image or a colored pattern is formed, color unevenness is less likely to occur, and display quality is high. In addition, since a photosensitive colored transfer layer is not formed by spin coating as in the pigment dispersion method, a transfer body can be used in which a photosensitive resin is applied uniformly and without waste in another resin preparation step in advance. The amount of the photosensitive colorant used can be greatly reduced, the utilization efficiency of the photosensitive coloring resin is more than ten times that of the conventional one, and the utilization efficiency of the photosensitive coloring resin to be used can be increased, and the cost can be reduced. Moreover,
Since wet development using a developing solution or the like is not performed, there is almost no burden on the waste solution treatment such as the waste solution treatment facility. Further, it is possible to form an image or a colored pattern on a large substrate, and it is possible to manufacture a color filter which can be applied to a large-sized liquid crystal display element.

[Brief description of drawings]

FIG. 1 is a process diagram showing an image forming method of the present invention, in which FIG. 1A shows a transfer body before being superposed on a transfer target, and FIG.
Shows the time of exposure, and FIG. 1 (c) shows the time of peeling of the support.

2A and 2B are process diagrams showing a method for manufacturing a color filter according to the present invention, wherein FIG. 2A shows a first color pattern formed, and FIG. 2B shows a second color pattern formed. 2 (c) shows a case where a third colored pattern is formed, and FIG. 2 (d) shows a case where a protective layer is formed.
(E) shows that an electrode is formed.

[Explanation of symbols]

 10 Substrate 12 Adhesive Layer 14 Transfer Target 16 Support 18 Photosensitive Colored Transfer Layer 20 Transfer Body 22 Mask 34 Protective Layer 36 Electrode 38 Black Matrix

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location // G03C 1/73 502

Claims (5)

[Claims] 1. A transfer body comprising a support and a photosensitive colored transfer layer on the surface of a transfer body having an adhesive layer formed on a substrate, the adhesion of the support being improved by irradiation with radiation. , The photosensitive colored transfer layer and the adhesive layer are superposed so as to be in close contact with each other, and after irradiating the portions other than the image pattern to be formed with radiation, the support and the irradiated portion of the photosensitive colored transfer layer are peeled off from the transfer target, An image forming method, which comprises forming a non-irradiated portion of a photosensitive colored transfer layer on an object to be transferred. 2. The photosensitive colored transfer layer is an acrylic resin,
The image forming method according to claim 1, which comprises a photosensitive coloring composition containing a pigment, a dispersant, a photopolymerizable monomer, and a photopolymerization initiator as main components. 3. A transfer body comprising: a pretreatment stage of a transfer body having an adhesive layer formed on a substrate; and a photosensitive colored transfer layer having improved adhesion to the support when irradiated with radiation. A step of adhering the photosensitive color transfer layer so as to be in close contact with the adhesive layer of the transfer target, an exposure step of irradiating a portion other than each color pattern to be formed with radiation, and a support and the photosensitive color transfer layer. A method of manufacturing a color filter, comprising: a peeling step of peeling the irradiated portion from the transferred material to form a photosensitive colored transfer layer of the non-irradiated portion on the transferred material. . 4. The photosensitive colored transfer layer is an acrylic resin,
The method for producing a color filter according to claim 3, which is a photosensitive coloring composition containing a pigment, a dispersant, a photopolymerizable monomer, and a photopolymerization initiator as main components. 5. The method of manufacturing a color filter according to claim 3, wherein the colored patterns are formed by performing the colored pattern forming step a plurality of times.