KR20150142521A - Curved display device - Google Patents

Abstract

A curved display device of the present invention expands a support object or a fixing film toward one side of the display device to be attached to a lateral side in order to surround the side, thereby preventing light leakage by reducing contraction stress of a polarization plate. The curved display device comprises: a curved display panel with a curved screen; a polarization plate which is arranged on an external side of the curved display panel; and a machine unit which fixes the polarization plate and the curved display panel. The polarization plate expands at least one side of the support object or the fixing film, which is located outside, toward the machine unit to constitute an expansion unit to surround an external side of the machine unit.

Description

[0001] CURVED DISPLAY DEVICE [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved display device, and more particularly, to a curved display device capable of increasing the immersion feeling of a viewer by producing a curved display panel.

In recent information society, the importance of display devices as visual information delivery media is getting more emphasized, and in order to take a major position in the future, it is necessary to meet requirements such as low power consumption, thinning, light weight, and high image quality.

The display device may include a cathode ray tube (CRT), an electroluminescence (EL), a light emitting diode (LED), a vacuum fluorescent display (VFD) A liquid crystal display (LCD), such as an organic light emitting display (OLED), a field emission display (FED), and a plasma display panel (PDP) ), Which can not emit light itself.

Recently, the size of a screen of a liquid crystal display device used as a display device of a television receiver is accelerating.

However, as the screen becomes larger in size, there is a problem that the viewer has a larger visual difference when viewing the center of the screen and when viewing both sides of the screen.

A problem with the screen of a large-sized television liquid crystal display device is that the screen glare off increases. This problem of visual difference can be improved by concave bending of the screen.

1 is a perspective view schematically showing a conventional curved display device.

2 is a photograph showing a typical curved display device as an example.

Referring to the drawings, a conventional curved display device 10 includes a display panel (i.e., a concave curved display panel) 1 having a concave curved screen and a curved backlight unit (not shown) , And is curved concavely with a constant curvature when viewed in the XY plane.

In order to realize a constant curvature in the general curved display device 10, not only the display panel 1, but also the backlight unit has a curved surface structure.

For example, the display panel 1 is fastened to a mechanism having a hard curved surface to realize a curved shape.

At this time, the shape of the display panel 1 can be changed to a curved surface in advance through a pre-process before the display panel 1 is fastened to the mechanism portion.

However, there are many obstacles to keeping the display panel 1 in a curved shape. For example, light leakage may occur due to interference with a mechanism portion of the curved surface of the display panel 1 due to contraction of the upper and lower polarizers through pre-processing. Further, the bending characteristic of the display panel 1 is relaxed due to the restoring force of the polarizing plate when the curved display panel 1 is held. With such a characteristic, there is a problem that the light leakage is largely manifested at the time of fastening to the mechanism portion having a hard curved surface.

FIG. 3 is a photograph showing, for example, a state in which a light leakage occurs in a conventional curved display device, for example, a light leakage of a display panel of a 65-inch model.

Referring to FIG. 3, it can be seen that light leakage occurs locally at the edges of the display panel due to the relaxation of the bending characteristics of the display panel due to the restoring force of the polarizing plate.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a curved display device capable of preventing light leakage.

Other objects and features of the present invention will be described in the following description of the invention and the claims.

According to an aspect of the present invention, there is provided a curved display device including: a curved display panel having a concave curved screen; A polarizer disposed outside the curved display panel; And a mechanism for fixing the polarizing plate and the curved display panel. The polarizing plate is characterized in that at least one side of the supporting member or the fixing film located on the outer side is extended toward the mechanism portion to form an expanded portion to surround the outer side surface of the mechanism portion .

A backlight unit positioned at a rear surface of the curved display panel and supplying backlight to the curved display panel; And a frame-shaped guide panel positioned between the curved display panel and the backlight unit and on which the curved display panel is mounted.

At this time, the polarizing plate includes a polarizing element; And a support positioned outside the polarizing element.

At this time, the fixing film may be attached on the upper side of the support.

At this time, an adhesive means interposed between the extension portion of the fixing film and the guide panel may be further included.

The fixing film is attached to the upper side of the support via a pressure-sensitive adhesive, and the pressure-sensitive adhesive may have the same shape as the fixing film including the extension.

The support includes a first support attached to a lower side of the polarizing element; And a second support attached to the upper side of the polarizing element.

At this time, at least one side of the second supporting member may expand the polarizing element and the first supporting member to constitute the extending portion.

At this time, the polarizer may further include a pressure-sensitive adhesive provided between the side of the first support and the extension of the second support.

At least one side of the first and second supports may extend beyond the polarization element to form the extension.

 At least one side of the support may extend beyond the polarization element to form the extension.

The extension may have a sawtooth shape.

The extensions may have the same rectangular shape as the support or the fixing film, or various other polygonal shapes.

As described above, the curved display device according to the present invention expands the support or the fixing film to one side of the display device so as to surround the side surface, thereby reducing the shrinkage stress of the polarizing plate, thereby preventing light leakage.

1 is a perspective view schematically showing a conventional curved display device;
2 is a photograph showing a typical curved display device as an example.
3 is a photograph showing, for example, a state in which light leakage occurs in a conventional curved display device.
4 is a cross-sectional view schematically showing a part of a structure of a curved display device according to the present invention.
5A and 5B are diagrams illustrating characteristics of light transmitted through a liquid crystal display panel;
6 is an exploded perspective view schematically showing the components of a polarizing plate according to the first embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view taken along the line I-I 'of the polarizer according to the first embodiment of the present invention shown in FIG. 6; FIG.
8 is an exploded perspective view schematically showing another example of the polarizing plate according to the first embodiment of the present invention.
9 is an exploded perspective view schematically showing still another example of the polarizer according to the first embodiment of the present invention.
10 is an exploded perspective view schematically showing still another example of the polarizing plate according to the first embodiment of the present invention.
FIG. 11 is a photograph showing, for example, a state in which the light leakage is relaxed in the curved display device according to the present invention. FIG.
12 is a cross-sectional view schematically showing components of a polarizing plate according to a second embodiment of the present invention.
13 is a cross-sectional view schematically showing components of a polarizing plate according to a third embodiment of the present invention.
FIG. 14 is a cross-sectional view schematically showing components of a polarizing plate according to a fourth embodiment of the present invention. FIG.
15 is a cross-sectional view schematically showing the components of a polarizing plate according to a fifth embodiment of the present invention.
16 is a cross-sectional view schematically showing components of a polarizing plate according to a sixth embodiment of the present invention.
17 is a cross-sectional view schematically showing components of a polarizing plate according to a seventh embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The dimensions and relative sizes of the layers and regions in the figures may be exaggerated for clarity of illustration.

It will be understood that when an element or layer is referred to as being another element or "on" or "on ", it includes both intervening layers or other elements in the middle, do. On the other hand, when a device is referred to as "directly on" or "directly above ", it does not intervene another device or layer in the middle.

The terms spatially relative, "below," "lower," "above," "upper," and the like, And may be used to easily describe the correlation with other elements or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term "below" can include both downward and upward directions.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprise "and / or" comprising ", as used in the specification, means that the presence of stated elements, Or additions.

4 is a cross-sectional view schematically showing a part of a structure of a curved display device according to the present invention.

In the case of the display device, when the shape of the curved surface is more than the flat surface, the perceived immersion degree and the three dimensional feeling can be improved.

A curved display device according to the present invention includes: a display panel (i.e., a concave curved display panel) having a concave curved screen; a backlight disposed behind the curved display panel and supplying backlight to the curved display panel; Unit.

At this time, the curved display panel may have a curved shape with a certain curvature when viewing the screen on the XY plane.

Such a curved display panel can be either a flexible type or a rigid type, and can have a curved shape by various manufacturing methods.

The curved display panel may be a liquid crystal display panel, a plasma display panel, an organic light emitting display panel, or the like.

4, the curved display panel includes two substrates 105 and 110 and a liquid crystal layer 130 formed between the substrates 105 and 110. In this case, Lt; / RTI >

In this case, the liquid crystal display panel shown in FIG. 4 shows a case of using a twisted nematic (TN) mode, but the present invention is not limited thereto. The present invention can be applied regardless of a liquid crystal mode such as an in-plane switching (IPS) mode or a fringe field switching (FFS) mode as well as a VA (vertical alignment) mode.

A thin film transistor array is formed on the lower substrate 110 of the two substrates 105 and 110.

The thin film transistor array includes a plurality of data lines (not shown) to which R, G, and B data voltages are supplied, a plurality of gate lines (not shown) to which gate pulses are supplied to cross the data lines, A plurality of thin film transistors formed at intersections of the gate lines and the gate lines, a plurality of pixel electrodes 118 for charging data voltages to the liquid crystal cells, and a plurality of pixel electrodes 118 connected to the pixel electrodes 118, Storage capacitors, and the like.

The thin film transistor includes a gate electrode 121 connected to the gate line, a source electrode 122 connected to the data line, and a drain electrode electrically connected to the pixel electrode 118 through a contact hole formed in the passivation layer 115b 123). The thin film transistor includes a gate insulating layer 115a for insulation between the gate electrode 121 and the source and drain electrodes 122 and 123 and a source electrode And an active layer 124 between the drain electrode 122 and the drain electrode 123 to form a conductive channel.

In this case, when the amorphous silicon thin film is used as the active layer 124, the source / drain regions of the active layer 124 are electrically connected to the source / drain electrodes 122 and 123 and the ohmic- .

However, the present invention is not limited thereto, and the active layer 124 may use a polycrystalline silicon thin film or another semiconductor material such as an oxide semiconductor.

A color filter array is formed on the upper substrate 105, and the color filter array is provided with a color filter 107 composed of a plurality of sub-color filters implementing the colors of R, G, and B, A black matrix (BM) 106 for blocking light transmitted through the liquid crystal layer 130, and a transparent common electrode 108 for applying a voltage to the liquid crystal layer 130.

When the curved display panel is constituted by a liquid crystal display panel, the size of the upper substrate 105 may be designed to be smaller than that of the lower substrate 110. Accordingly, an area not covered by the upper substrate 105 is exposed. And a pad portion in which the gate driver and the data driver are located may be formed in the exposed region.

The upper substrate 105 and the lower substrate 110 constituted as described above are adhered to each other by a sealant 140 formed on the periphery of an image display area to constitute a liquid crystal display panel, The joining of the lower substrate 110 is performed through a joining key (not shown) formed on the upper substrate 105 or the lower substrate 110.

Such a liquid crystal display panel is provided with a backlight unit on its back surface to supply light. This is because the liquid crystal display itself is a device that does not have a light emitting element, and thus requires a separate light source.

Although the present invention is not limited to a direct-type or an edge-type according to a method of arranging a light source, for example, a direct-type backlight unit will be described in detail. (Not shown), and a reflector (not shown) may be installed on the rear surface of the lamp assembly.

A plurality of optical sheets (not shown) may be disposed between the lamp assembly and the curved display panel to reduce light loss and improve uniformity.

At this time, the lamp may be a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp (EEFL), a hot cathode fluorescent lamp (HCFL), and a light emitting diode Emitting Diode (LED).

Further, the optical sheet includes a diffusion sheet and a prism sheet, and a protective sheet may be added.

The diffusion sheet disperses the light incident from the lamp, thereby preventing light from being partially densely formed and causing unevenness in an image displayed on the curved display panel.

The prism sheet condenses light incident from the diffusion sheet and uniformly distributes the light on the front surface of the curved display panel.

Further, the protective sheet protects the optical sheet sensitive to dust and scratches, prevents the optical sheet from flowing when the backlight unit is carried, and has a function of diffusing light incident from the prism sheet, Can be distributed.

As described above, a curved display panel composed of the upper substrate 105 and the lower substrate 110 is seated on the upper part of the backlight unit thus configured through the guide panel 145 in the form of a frame, The guide panel 145 and the backlight unit are coupled to each other by a lower cover bottom (not shown) through a plurality of fastening means to constitute a curved display device.

In this case, when the curved display panel is constituted by a liquid crystal display panel, the liquid crystal display panel includes a first polarizer 150a disposed on the lower side of the lower substrate 110 and a second polarizer 150b disposed on the upper side of the upper substrate 105 And may further include a second polarizer 150b.

The first polarizer 150a includes a transmission axis in a first direction and polarizes light in a first direction. The second polarizer 150b includes a transmission axis in a second direction and polarizes the light in a second direction. For example, the transmission axis of the first polarizer 150a and the transmission axis of the second polarizer 150b may be perpendicular to each other.

The first and second polarizing plates 150a and 150b transmit the light of the polarization component coinciding with the transmission axis and transmit the light by the arrangement of the transmission axis of the first and second polarizing plates 150a and 150b and the arrangement characteristics of the liquid crystal .

5A and 5B are diagrams illustrating characteristics of light transmitted through a liquid crystal display panel.

Referring to the drawings, a typical liquid crystal display device includes a liquid crystal display panel 100 and a backlight unit (not shown) that supplies light from the back of the liquid crystal display panel 100. The liquid crystal display panel 100 includes a liquid crystal layer 130, And first and second polarizers 150a and 150b attached to the outer surfaces of the first and second substrates 110 and 105, respectively.

Although not shown, a plurality of pixels each having a transparent pixel electrode formed on the inner surface of the first substrate 110 and a thin film transistor for on / off controlling the liquid crystal driving voltage transmitted to each pixel electrode are provided And a color filter and a common electrode for color implementation are formed on the inner surface of the second substrate 105.

The liquid crystal layer 130 sandwiched between the first and second substrates 110 and 105 is a TN mode in which the major axis direction of the molecules is perpendicular to the first and second substrates 110 and 105 And the polarizing axes of the first and second polarizing plates 150a and 150b are orthogonal to each other while being parallel to the first substrate 110 and reaching the second substrate 105 at an azimuth angle of 90 degrees .

As described above, since the liquid crystal display panel 100 does not emit light itself, a backlight unit for supplying light to the liquid crystal display panel 100 is positioned on the back surface of the liquid crystal display panel 100.

When light is emitted from the backlight unit when the voltage is off in the liquid crystal display panel 100, only linearly polarized light parallel to the polarization axis of the first polarizer 150a is transmitted through the first polarizer 150a And the remaining portion is absorbed and rotated 90 degrees along the azimuth angle while passing through the liquid crystal layer 130 to transmit white light through the second polarizer plate 150b.

Next, when the voltage is on, the liquid crystal molecules of the liquid crystal display panel 100 are aligned perpendicularly to the first and second polarizers 150a and 150b as shown in FIG. The optical rotatory power of the first polarizer 150a is lost and the linearly polarized light transmitted through the first polarizer 150a is blocked by the second polarizer 150b to display black.

4, the polarizing plate for the curved display device according to the present invention, for example, the second polarizing plate 150b, expands the support or the fixing film 156 to one side of the display device ), And by attaching it to cover the side surface of the guide portion 145, for example, the mechanism portion, the shrinkage stress of the polarizers 150a and 150b can be relaxed, which will be described in detail with reference to the drawings.

FIG. 6 is an exploded perspective view schematically showing the components of the polarizing plate according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view taken along the line I-I 'of the polarizing plate according to the first embodiment of the present invention shown in FIG. And Fig.

Here, for convenience, FIG. 6 schematically shows the components of the polarizer in the state where the adhesive and the adhesive are omitted.

8 is an exploded perspective view schematically showing another example of the polarizer according to the first embodiment of the present invention.

9 and 10 are exploded perspective views schematically showing still another example of the polarizing plate according to the first embodiment of the present invention.

As described above, the polarizing plate transmits only the light vibrating in the same direction as the polarization axis from the light provided from the backlight unit, and the light vibrating in the other direction is absorbed or reflected by using a suitable medium, It has a role to play.

The polarizer according to the first embodiment of the present invention includes a first support 153a and a second support 153b and a second support 153b disposed between the first support 153a and the second support 153b. (151).

The first support 153a and the second support 153b may be formed of a general protection film free from retardation and may be formed of a triacetyl cellulose (TAC) film Lt; / RTI >

The first support 153a is attached to the lower side of the polarizing element 151 through the first adhesive 152a while the second support 153b is attached to the polarizing element 151 As shown in Fig.

Here, the first and second adhesives 152a and 152b refer to a material to be adhered to the adherend through chemical bonding. Therefore, once adhered, the first and second adhesives 152a and 152b do not fall off unless material failure occurs.

As the first and second adhesives 152a and 152b, an acrylic or epoxy-based component is the main component, and a chemical reaction occurs due to heat or UV.

The polarizing element 151 refers to a film that can be converted from natural light or polarized light into arbitrary polarized light. The polarizing element 151 has a function of passing one polarized light component when divided into two polarized light components orthogonal to each other and absorbing, reflecting and scattering the other polarized light component May be used.

The polarizing element 151 and the first and second supporting members 153a and 153b adhered to each other may further be attached with a first release film 155a and a second release film 155b on the outer side in order to protect them .

At this time, the second release film 155b is attached to the outside of the second support body 153b to prevent scratches on the surface of the polarizer until the polarizer is attached to the final product, and the first release film 155a And may be attached to the outside of the first support 153a until the polarizer is attached to the final product.

The first release film 155a and the first support 153a are adhered to each other by a first adhesive agent 154a and attached to a surface of the final product on which the first release film 155a is detached. A second adhesive 154b is formed on the second support 153b to which the second release film 155b is attached.

At this time, the first and second pressure sensitive adhesive (154a, 154b) attach the polarizing plate to the liquid crystal display panel and do not chemically react (bond) with the adherend, do.

Therefore, it can be removed at any time and then reattached. Acrylic or silicon-based components can be used.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, so that the surface on which the first release film 155a is detached is attached.

At this time, in the case of the first embodiment of the present invention, the upper polarizing plate attached to the upper surface of the liquid crystal display panel is extended to one side of the curved display device, and the upper and lower extending portions 157a, 157a ', 157b, 157b', or extension portions 157, 157 '.

6 and 9, the upper and lower extension portions 157a, 157a ', 157b and 157b' according to the first embodiment of the present invention may be formed so as to extend upwardly and downwardly, respectively, However, the present invention is not limited thereto.

Referring to FIGS. 8 and 10, the extension portions 157 and 157 'according to the first embodiment of the present invention may be formed to extend only to one side of the upper and lower sides of the mechanism portion.

6 and 8, the upper and lower extension portions 157a and 157b and the extension portion 157 may be formed in a sawtooth shape. For example, in this case, the empty space in which the sawtooth-shaped upper extending portion 157a is not formed may be a region where the source driving integrated circuit is located.

9 and 10, the upper and lower extension parts 157a 'and 157b' and the extension part 157 'are formed in the same manner as the fixing film 156, A rectangular shape, or various other polygonal shapes.

This fixing film 156 may be adhered onto the second adhesive 154b after removing the second release film 155b of the upper polarizer. However, the present invention is not limited thereto, and a second adhesive may be provided under the fixing film 156 and may be attached to the second support 153b of the upper polarizer.

At this time, a predetermined protective film may be attached to the outside of the fixing film 156 to prevent the polarizing plate and the fixing film 156 from being scratched until the polarizing plate is attached to the final product.

After the polarizing plate thus formed is attached to the final product, the fixing film 156 on which the protective film is removed may further include a reinforcing substrate for protecting the liquid crystal display panel from external impact.

The reinforced substrate may be made of, for example, tempered glass having a thickness of about 3 mm to protect the liquid crystal display panel from external shocks. Such a tempered glass is a glass reinforced by heating a molded plate glass at a temperature of 500 to 600 ° C. which is close to a softening temperature, compressing and deforming the glass surface portion by quenching by compressed cooling air, Compared to ordinary glass, it has a bending strength of 3 to 5 times, an impact resistance of 3 to 8 times, and excellent heat resistance.

Although not shown, a bonding means such as a double-sided tape may be interposed between the upper and lower extension portions 157a 'and 157b' and the extension portion 157 'of the fixing film 156 and the mechanism portion.

As described above, the upper and lower extensions 157a, 157a ', 157b, and 157b' or the extensions 157 and 157 'of the fixing film 156 according to the first embodiment of the present invention are not limited to the upper, A curved display device having a curved surface wrapped around the lower side is formed to minimize the interference with the mechanism part and to relax the shrinkage stress of the polarizing plate to maintain the curved surface of the liquid crystal display panel.

Accordingly, the occurrence of light leakage locally at the edge of the liquid crystal display panel can be suppressed, and the image quality can be improved.

FIG. 11 is a photograph showing, for example, a state in which the light leakage is relaxed in the curved display device according to the present invention, for example, a light leakage of a display panel of a 65-inch model.

Referring to FIG. 11, the supporting member or the fixing film is extended to one side of the display device so as to surround the side surface of the mechanism portion, thereby maintaining the bending state of the display panel.

As a result, it can be seen that the stress is relieved at the corner of the display panel and the light leakage is alleviated.

On the other hand, the present invention is not limited to the constitution of the above-mentioned polarizing plate and fixing film. The present invention can be applied to various configurations of the polarizing plate and the fixing film by applying various modifications to the polarizing plate and the fixing film as long as the fixing film is attached to the upper polarizing plate to extend to one side of the curved display, Will be described in detail through the second to fourth embodiments of FIG.

12 is a cross-sectional view schematically showing the components of a polarizing plate according to a second embodiment of the present invention.

The polarizer according to the second embodiment of the present invention shown in FIG. 12 has substantially the same structure as the first embodiment of the present invention except that a second adhesive is provided under the fixing film have. Therefore, the description of the same components refers to the description of the first embodiment of the present invention described above.

12, the polarizer according to the second embodiment of the present invention includes a first support 253a and a second support 253b, and a polarizer 253b disposed between the first support 253a and the second support 253b. Device < / RTI >

As in the first embodiment of the present invention, the first and second supports 253a and 253b may be formed of a general protective film having no phase delay, for example, a TAC film.

The first support 253a is attached to the lower side of the polarizing element 251 through the first adhesive 252a while the second support 253b is attached to the lower side of the polarizing element 251 through the second adhesive 252b. As shown in Fig.

The polarizing element 251 and the first and second supporting bodies 253a and 253b adhered to each other can further be attached with a first release film 255a and a second release film 255b on the outer side in order to protect them .

At this time, the second release film 255b is attached to the outside of the second support body 253b to prevent scratches on the surface of the polarizer until the polarizer is attached to the final product, and the first release film 255a And may be attached to the outside of the first support 253a until the polarizer is attached to the final product.

The first release film 255a and the first support 253a are adhered to each other by a first adhesive 254a and attached to a surface of the final product on which the first release film 255a is detached. On the other hand, the second pressure sensitive adhesive may not be formed on the second support 253b to which the second release film 255b is attached.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, so that the surface on which the first release film 255a is detached is attached.

At this time, in the case of the second embodiment of the present invention, the upper polarizer is attached to the upper surface of the liquid crystal display panel, and the upper polarizer is extended to one side of the display device to cover the side surface of the guide panel. 257a, and 257b are attached to the upper surface of the fixing film 256.

The upper and lower extension parts 257a and 257b according to the second embodiment of the present invention may be formed so as to extend upward and downward, respectively, of the mechanical part, as in the first embodiment of the present invention, The invention is not limited thereto.

As another example, the extension portion according to the second embodiment of the present invention may be formed so as to extend only to one side of the upper and lower sides of the mechanism portion.

In addition, the upper and lower extension portions 257a and 257b and the extension portion may be formed in a saw tooth shape.

However, the present invention is not limited thereto. The upper and lower extension parts 257a and 257b and the extension part may be formed in the same rectangular shape as the fixing film 256, or in various other polygonal shapes.

The third release film 255c is attached to the lower portion of the fixing film 256 through the second adhesive 254b.

In this case, the fixing film 256 may be attached to the second support 253b of the upper polarizer plate through the second adhesive 254b after removing the second release film 255b of the upper polarizer plate.

The second adhesive 254b and the third release film 255c may have the same shape as the fixing film 256 including the upper and lower extension portions 257a and 257b and the extension portion of the upper portion. However, the present invention is not limited thereto.

At this time, a predetermined protective film may be attached to the outside of the fixing film 256 to prevent the polarizing plate and the fixing film 256 from being frayed until the polarizing plate is attached to the final product.

The polarizing plate thus formed may be attached to the final product, and the fixing film 256 on which the protective film is removed may further include a reinforcing substrate for protecting the liquid crystal display panel from external impact.

The upper and lower extension portions 257a and 257b or the extension portions of the fixing film 256 according to the second embodiment of the present invention may cover the upper, lower, or lower side of the mechanical section, as in the first embodiment of the present invention described above A curved display device having a gentle curved surface is formed to minimize the interference with the mechanism part, and the contraction stress of the polarizing plate is relaxed to maintain the curved surface of the liquid crystal display panel.

Accordingly, the occurrence of light leakage locally at the edge of the liquid crystal display panel can be suppressed, and the image quality can be improved.

13 is a cross-sectional view schematically showing the components of the polarizer according to the third embodiment of the present invention.

Here, the polarizer according to the third embodiment of the present invention shown in FIG. 13 has substantially the same structure as the first embodiment of the present invention except that the first support is omitted. Therefore, the description of the same components refers to the description of the first embodiment of the present invention described above.

Referring to FIG. 13, the polarizing plate according to the third embodiment of the present invention includes a polarizing element 351 and a support 353 disposed thereon.

As in the first embodiment of the present invention, the support 353 may be formed of a general protective film having no phase delay, for example, a TAC film.

The support 353 is attached to the upper side of the polarizing element 351 through an adhesive 352.

The first and second release films 355a and 355b may be further attached to the outer side of the polarizing element 351 and the support 353 bonded to each other in order to protect them.

At this time, the second release film 355b is attached to the outside of the support 353 to prevent the surface of the polarizer from being scratched until the polarizer is attached to the final product, and the first release film 355a And may be attached to the outside of the polarizing element 351 until it is attached to the product.

The first release film 355a and the polarizing element 351 are adhered to each other by a first adhesive 354a and attached to a surface of the final product on which the first release film 355a is detached. A second adhesive 354b is formed on the support 353 to which the second release film 355b is attached.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, and a surface on which the first release film 355a is detached is attached.

In this case, in the case of the third embodiment of the present invention, the upper polarizer is attached to the upper surface of the liquid crystal display panel, and the upper polarizer is extended to one side of the display device to cover the side surface of the guide panel. 357a, 357b, or a fixing film 356 having an extension portion.

The upper and lower extension portions 357a and 357b according to the third embodiment of the present invention may be formed so as to extend upward and downward of the mechanism portion, respectively, as in the first embodiment of the present invention, The invention is not limited thereto.

As another example, the extension portion according to the third embodiment of the present invention may be formed so as to extend only to one side of the upper and lower sides of the mechanism portion.

In addition, the upper and lower extension portions 357a and 357b and the extension portion may be formed in a saw tooth shape.

However, the present invention is not limited thereto. The upper and lower extension portions 357a and 357b and the extension portion may be formed in the same rectangular shape as the fixing film 356, or in various other polygonal shapes.

The fixing film 356 may be adhered onto the second adhesive 354b after removing the second release film 355b of the upper polarizer. However, the present invention is not limited thereto, and a second adhesive may be provided on the lower part of the fixing film 356 and may be attached to the support 353 of the upper polarizer through the second adhesive.

At this time, a predetermined protective film may be attached to the outside of the fixing film 356 to prevent the surface of the polarizing plate and the fixing film 356 from scratching until the polarizing plate is attached to the final product.

After the polarizing plate is attached to the final product, the fixing film 356 on which the protective film is removed may further include a reinforcing substrate for protecting the liquid crystal display panel from external impact.

Although not shown, a bonding means such as a double-sided tape may be interposed between the upper and lower extension portions 357a and 357b of the fixing film 356 and the extension portion and the mechanism portion.

FIG. 14 is a cross-sectional view schematically showing the components of a polarizing plate according to a fourth embodiment of the present invention.

In this case, the polarizer according to the fourth embodiment of the present invention shown in FIG. 14 is different from the polarizer according to the first embodiment of the present invention except that the second adhesive is provided on the lower part of the fixing film, As shown in FIG. Therefore, the description of the same components refers to the description of the first embodiment of the present invention described above.

Referring to FIG. 14, the polarizing plate according to the fourth embodiment of the present invention includes a polarizing element 451 and a support 453 disposed thereon.

As in the first embodiment of the present invention, the support 453 may be formed of a general protective film having no phase delay, for example, a TAC film.

The support 453 is attached to the upper side of the polarizing element 451 through an adhesive 452.

The first polarizing film 451 and the second polarizing film 455b may be attached to the outer side of the polarizing element 451 and the support 453 adhered to each other in order to protect them.

At this time, the second release film 455b is attached to the outside of the support 453 to prevent scratches on the surface of the polarizer until the polarizer is attached to the final product, and the first release film 455a is attached to the polarizer Can be attached to the outside of the polarizing element 451 until it is attached to the final product.

The first release film 455a and the polarizing element 451 are adhered to each other by a first adhesive 454a and attached to a surface of the final product on which the first release film 455a is removed. On the other hand, the second adhesive may not be formed on the support 453 to which the second release film 455b is attached.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, so that the surface on which the first release film 455a is detached is attached.

At this time, in the case of the fourth embodiment of the present invention, the liquid crystal display panel is extended to one side of the upper side polarizing plate attached to the upper surface of the liquid crystal display panel so as to cover the side of the guide panel, 457a, and 457b are attached to the fixing film 456. As shown in Fig.

The upper and lower extension portions 457a and 457b according to the first embodiment of the present invention may be formed so as to extend upward and downward of the mechanism portion, respectively, as in the first embodiment of the present invention, The invention is not limited thereto.

As another example, the extension portion according to the second embodiment of the present invention may be formed so as to extend only to one side of the upper and lower sides of the mechanism portion.

In addition, the upper and lower extension portions 457a and 457b and the extension portion may be formed in a saw tooth shape.

However, the present invention is not limited thereto, and the upper and lower extension parts 457a and 457b and the extension part may be formed in the same rectangular shape as the fixing film 456, or in various other polygonal shapes.

The third release film 455c is attached to the lower portion of the fixing film 456 through the second adhesive 454b.

In this case, the fixing film 456 may be attached to the support 453 of the upper polarizer through the second adhesive 454b after removing the second release film 455b of the upper polarizer.

The second adhesive 454b and the third release film 455c may have the same shape as the fixing film 456 including the upper and lower extension portions 457a and 457b and the extension portion of the upper portion. However, the present invention is not limited thereto.

At this time, a predetermined protective film may be attached to the outside of the fixing film 456 to prevent scratches on the surface of the polarizing plate and the fixing film 456 until the polarizing plate is attached to the final product.

The fixing film 456, on which the protective film is removed after the polarizing plate is attached to the final product, may further include a reinforcing substrate for protecting the liquid crystal display panel from external impact.

Instead of attaching the fixing film to the upper side of the polarizing plate to prevent light leakage by relaxing the shrinking stress of the polarizing plate, the upper support may be extended to one side of the curved display device so as to surround the side of the device. , Which will be described in detail through the following fifth to seventh embodiments of the present invention.

15 is a cross-sectional view schematically showing the components of a polarizing plate according to a fifth embodiment of the present invention.

15, the polarizer according to the fifth embodiment of the present invention includes a first support 553a and a second support 553b, and a polarizer disposed between the first support 553a and the second support 553b. Device 551 as shown in FIG.

The first and second supports 553a and 553b may be formed of a general protective film having no phase delay, for example, a TAC film.

The first support 553a is attached to the lower side of the polarizing element 551 through the first adhesive 552a while the second support 553b is attached to the lower side of the polarizing element 551 through the second adhesive 552b. As shown in Fig.

The upper and lower sides of the second support body 553b extend beyond the polarization element 551 and the first and second adhesive agents 552a and 552b and the first support body 553a. And covers the side surface of the mechanical part through the lower extension parts 557a and 557b.

The polarizing element 551 and the first and second supporting bodies 553a and 553b adhered to each other may further be attached with a first release film 555a and a second release film 555b on the outer side in order to protect them .

At this time, the second release film 555b is attached to the outside of the second support body 553b to prevent scratches on the surface of the polarizer until the polarizer is attached to the final product, and the first release film 555a And may be attached to the outside of the first support 553a until the polarizer is attached to the final product.

The first release film 555a and the first support 553a are adhered to each other by a first adhesive 554a and the final product is attached to a surface on which the first release film 555a is detached. On the other hand, a pressure-sensitive adhesive may not be formed between the second release film 555b and the second support 553b.

The first release film 555a, the first adhesive 554a, and the second release film 555b may have the same shape as the second support 553b.

At this time, between the side surfaces of the polarizing element 551, the first and second adhesive agents 552a and 552b and the first support body 553a and the upper and lower extension portions 557a and 557b of the second support body 553b, A second adhesive agent 554b may be additionally provided.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, so that the surface on which the first release film 555a is removed is attached.

At this time, as described above, in the case of the fifth embodiment of the present invention, at least one side of the second support body 553b of the upper polarizer plate is extended to one side of the curved display apparatus to cover the side of the guide panel, And the lower extension portions 557a and 557b are formed.

At this time, the upper and lower extension parts 557a and 557b according to the fifth embodiment of the present invention may be formed so as to extend upward and downward, respectively, of the mechanical part, but the present invention is not limited thereto.

As another example, the extension part according to the fifth embodiment of the present invention may be formed so as to extend only to one side of the upper and lower sides of the mechanism part.

The upper and lower extension portions 557a and 557b and the extension portion may be formed in a sawtooth shape. For example, in this case, the tooth-shaped upper and lower extension portions 557a and 557b and the empty space in which the extension portion is not formed may be a region where the source drive integrated circuit is located.

However, the present invention is not limited to this, and the upper and lower extension portions 557a and 557b and the extension portion may be formed in the same rectangular shape as the second support body 553b or various other polygonal shapes.

At this time, the second release film 555b may further include a reinforcing substrate for protecting the liquid crystal display panel from external impact.

As described above, the second support 553b according to the fifth embodiment of the present invention includes a curved display device having at least one side extended to one side of the curved display device and having a curved surface wrapping the upper, lower, or lower side of the mechanism, It is possible to minimize the interference with the mechanism portion and to reduce the shrinkage stress of the polarizing plate to maintain the curved surface of the liquid crystal display panel.

Accordingly, the occurrence of light leakage locally at the edge of the liquid crystal display panel can be suppressed, and the image quality can be improved.

16 is a cross-sectional view schematically showing the components of a polarizing plate according to a sixth embodiment of the present invention.

The polarizer according to the sixth embodiment of the present invention shown in FIG. 16 has substantially the same configuration as the fifth embodiment of the present invention except that the polarizer has an extension part in the first support as well as the second support. Lt; / RTI > Therefore, the description of the same components refers to the description of the fifth embodiment of the present invention described above.

16, the polarizer according to the sixth embodiment of the present invention includes a first support 653a and a second support 653b, and a polarizing plate 653b disposed between the first support 653a and the second support 653b. Device 651 as shown in FIG.

As in the fifth embodiment of the present invention, the first and second supports 653a and 653b may be formed of a general protective film having no phase delay, for example, a TAC film.

The first support 653a is attached to the lower side of the polarizing element 651 through an adhesive 652 while the second support 653b is attached to the upper side of the polarizing element 651 via the adhesive 652. [ As shown in Fig.

The first and second support bodies 653a and 653b extend upward and downward from the polarization element 651 between the first and second support members 653a and 653b. Wraps the sides.

The polarizing element 651 and the first and second supporting bodies 653a and 653b adhered to each other may further be attached with a first release film 655a and a second release film 655b on the outer side thereof to protect them .

At this time, the second release film 655b is attached to the outside of the second support 653b to prevent scratches on the surface of the polarizer until the polarizer is attached to the final product, and the first release film 655a And may be attached to the outside of the first support 653a until the polarizer is attached to the final product.

The first release film 655a and the first support 653a are adhered to each other by a pressure sensitive adhesive 654 and attached to a surface of the final product on which the first release film 655a is removed. On the other hand, a pressure-sensitive adhesive may not be formed between the second release film 655b and the second support 653b.

The first release film 655a, the adhesive 654 and the second release film 655b may be formed to have the same shape as the first and second support bodies 653a and 653b.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, so that the surface on which the first release film 655a is detached is attached.

At this time, as described above, in the case of the sixth embodiment of the present invention, at least one side of the first and second supporting bodies 653a and 653b of the upper polarizer is extended to one side of the curved display apparatus, The upper and lower extension portions 657a and 657b are formed so as to enclose the upper and lower extension portions 657a and 657b.

Here, the upper and lower extension portions 657a and 657b according to the sixth embodiment of the present invention may be formed so as to extend upward and downward of the mechanism portion, respectively, as in the fifth embodiment of the present invention, The invention is not limited thereto.

As another example, the extension part according to the sixth embodiment of the present invention may be formed so as to extend only to one of the upper and lower sides of the mechanism part.

In addition, the upper and lower extension portions 657a and 657b and the extension portion may be formed in a saw tooth shape.

However, the present invention is not limited thereto, and the upper and lower extension portions 657a and 657b and the extension portion may be formed in the same rectangular shape as the first and second support bodies 653a and 653b, or in various other polygonal shapes .

At this time, the second release film 655b may further include a reinforcing substrate for protecting the liquid crystal display panel from an external impact.

17 is a cross-sectional view schematically showing components of a polarizing plate according to a seventh embodiment of the present invention.

In this case, the polarizer according to the seventh embodiment of the present invention shown in FIG. 17 has substantially the same structure as the fifth embodiment of the present invention except that the first support is omitted. Therefore, the description of the same components refers to the description of the fifth embodiment of the present invention described above.

Referring to FIG. 17, the polarizer according to the seventh embodiment of the present invention includes a polarizer 751 and a support 753 disposed thereon.

As in the fifth embodiment of the present invention, the support 753 may be formed of a general protective film having no phase delay, for example, a TAC film.

At this time, the support 753 is extended above and below the polarizing element 751 and covers the side of the mechanism through the upper and lower extension portions 757a and 757b.

The polarizing element 751 and the support body 753 adhered to each other as described above may further be attached with a first release film 755a and a second release film 755b on the outer side in order to protect them.

At this time, the second release film 755b is attached to the outside of the support body 753 to prevent the surface of the polarizer plate from being damaged until the polarizer plate is attached to the final product, and the first release film 755a And may be attached to the outside of the polarizing element 751 until it is attached to the product.

The first release film 755a and the polarizing element 751 are adhered to each other by an adhesive 752 and an adhesive 754 and adhered to a surface of the final product on which the first release film 755a is detached. On the other hand, a pressure-sensitive adhesive may not be formed between the second release film 755b and the support 753.

The first release film 755a, the adhesive 754, and the second release film 755b may have the same shape as the support 753.

The polarizing plate having such a configuration is attached to the upper and lower surfaces of the liquid crystal display panel, respectively, so that the surface on which the first release film 755a is detached is attached.

At this time, as described above, in the case of the seventh embodiment of the present invention, at least one side of the support 753 of the upper polarizer is extended to one side of the curved display device, and the upper, And 757a and 757b.

Here, the upper and lower extension portions 757a and 757b according to the seventh embodiment of the present invention may be formed so as to extend upward and downward of the mechanism portion, respectively, as in the fifth embodiment of the present invention, The invention is not limited thereto.

As another example, the extension portion according to the seventh embodiment of the present invention may be formed so as to extend only to one side of the upper and lower sides of the mechanism portion.

In addition, the upper and lower extension portions 757a and 757b and the extension portion may be formed in a saw tooth shape.

However, the present invention is not limited thereto, and the upper and lower extension parts 757a and 757b and the extension part may be formed in the same rectangular shape as the support body 753, or in various other polygonal shapes.

At this time, the second release film 755b may further include a reinforcing substrate for protecting the liquid crystal display panel from an external impact.

While a great many are described in the foregoing description, it should be construed as an example of preferred embodiments rather than limiting the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

151, 251, 351, 451, 651, 751:
153a, 153b, 253a, 253b, 353, 453, 553a, 553b, 653a, 653b, 753:
155a, 255a, 255c, 355a, 455a, 455c, 555a, 655a, 755a: first and third release films
155b, 255b, 355b, 455b, 555b, 655b, 755b: the second release film
156, 256, 356, 456:
157a, 257a, 357a, 457a, 557a, 657a, 757a:
157b, 257b, 357b, 457b, 557b, 657b, 757b:

Claims (13)

A curved display panel in which a screen is concavely curved;
A polarizer disposed outside the curved display panel; And
And a mechanism for fixing the polarizing plate and the curved display panel,
Wherein at least one side of the supporting member or the fixing film located on the outer side of the polarizing plate expands toward the mechanism portion to form an expanded portion to surround the outer side surface of the mechanism portion. The backlight unit of claim 1, further comprising: a backlight unit positioned at a rear surface of the curved display panel and supplying backlight to the curved display panel; And
Further comprising a frame-shaped guide panel positioned between the curved display panel and the backlight unit and on which the curved display panel is mounted. The liquid crystal display according to claim 2,
A polarizing element; And
And a support positioned outside the polarizing element. The curved display device according to claim 3, wherein the fixing film is attached to the upper side of the support. The curved display device according to claim 4, further comprising an adhesion means interposed between the extension part of the fixing film and the guide panel. [5] The apparatus of claim 3, wherein the fixing film is attached to the upper side of the support via a pressure-
Wherein the pressure sensitive adhesive has the same shape as the fixing film including the extension portion. 4. The apparatus of claim 3, wherein the support
A first support attached to a lower side of the polarizing element; And
And a second support attached to the upper side of the polarizing element. 8. The curved display device according to claim 7, wherein at least one side of the second support member is larger than the polarizing element and the first support member to constitute the extension part. The curved display device according to claim 8, further comprising a pressure-sensitive adhesive provided between the side of the polarizing element and the first support and between the extension of the second support. The curved display device according to claim 7, wherein at least one side of the first and second supporting members is extended from the polarizing element to form the extending portion. 4. The curved display device according to claim 3, wherein at least one side of the support extends from the polarizing element to form the extension. The curved display device according to claim 1, wherein the extending portion has a saw-tooth shape. The curved display device according to claim 1, wherein the extension portion has a rectangular shape identical to that of the support or the fixing film, or other various polygonal shapes.

Images