KR102162911B1 - Curved liquid crystal display device - Google Patents

Abstract

The present invention, a liquid crystal panel; A first polarizing plate attached to an upper surface of the liquid crystal panel and including a first polarizing layer and first and second protective films on both sides of the first polarizing layer; A second polarizing plate attached to a lower surface of the liquid crystal panel and including a second polarizing layer and third and fourth protective films on both sides of the second polarizing layer; A backlight unit under the second polarizing plate, first and second adhesive layers are formed on each of the first and second surfaces of the first polarizing plate, and the first adhesive layer is the liquid crystal panel and the first polarizing plate It provides a curved liquid crystal display, characterized in that located between.

Description

Curved liquid crystal display device

The present invention relates to a liquid crystal display device, and more particularly, to a curved liquid crystal display device.

As the information society develops, the demand for display devices for displaying images is increasing in various forms, liquid crystal display devices (LCD devices), plasma display panel devices (PDP devices), Various flat panel display devices (FPD devices) such as organic light emitting diode devices (OLED devices) have been widely developed and applied to various fields.

Among these flat panel display devices, liquid crystal display devices are widely used because they have advantages such as miniaturization, weight reduction, thinness, and low power driving.

In general, a liquid crystal display device uses optical anisotropy and polarization properties of a liquid crystal, and includes a liquid crystal layer between two substrates and a liquid crystal layer, and a pixel electrode and a common electrode for driving liquid crystal molecules of the liquid crystal layer. Accordingly, the liquid crystal display device causes liquid crystal molecules to move by an electric field generated by applying a voltage to a pixel electrode and a common electrode, thereby expressing an image by a transmittance of light that varies accordingly. Such liquid crystal display devices are applied in various ways, from portable devices such as mobile phones and multimedia devices to notebook computers or computer monitors and large televisions.

However, a liquid crystal display device as a flat panel display device has a problem in that a distance deviation from the main viewing area of the viewer to the display screen occurs depending on the location.

This will be described with reference to FIG. 1.

1 is a schematic diagram of a general liquid crystal display device.

As shown in Fig. 1, since the liquid crystal display 10 is manufactured in a flat plate shape, the first distance d1 from the main viewing area of the viewer to the central area of the liquid crystal display 10 and the liquid crystal from the main viewing area The second distances d2 to the left and right regions of the display device 10 are different from each other. That is, the second distance d2 is greater than the first distance d1, and a distance deviation from the main viewing area to the display screen of the liquid crystal display 10 occurs.

The problem of such distance deviation appears larger as the screen of the liquid crystal display 10 increases, and thus, the degree of immersion in the image displayed through the liquid crystal display 10 decreases.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a curved liquid crystal display device capable of solving the distance deviation problem.

In order to achieve the above object, the present invention, a liquid crystal panel; A first polarizing plate attached to an upper surface of the liquid crystal panel and including a first polarizing layer and first and second protective films on both sides of the first polarizing layer; A second polarizing plate attached to a lower surface of the liquid crystal panel and including a second polarizing layer and third and fourth protective films on both sides of the second polarizing layer; A backlight unit under the second polarizing plate, first and second adhesive layers are formed on each of the first and second surfaces of the first polarizing plate, and the first adhesive layer is the liquid crystal panel and the first polarizing plate It provides a curved liquid crystal display, characterized in that located between.

The curved liquid crystal display of the present invention further includes a surface treatment layer on the outer surface of the second adhesive layer.

Further, the curved liquid crystal display device of the present invention further includes a film patterned retarder including a left-eye retarder and a right-eye retarder between the second adhesive layer and the surface treatment layer.

A third adhesive layer is further formed between the second adhesive layer and the film patterned retarder.

At least one of the first adhesive layer and the second adhesive layer is of a hard type having an elastic modulus of greater than 70,000 Pa.

Both the first adhesive layer and the second adhesive layer are of a hard type.

Alternatively, the first adhesive layer is a soft type having an elastic modulus of less than 70,000 Pa, and the second adhesive layer is a hard type.

Alternatively, at least one of the first adhesive layer and the second adhesive layer is a hard type, and the third adhesive layer is a hard type.

A fourth adhesive layer is formed between the liquid crystal panel and the second polarizing plate, and the fourth adhesive layer has an elastic modulus lower than that of the first, second, and third adhesive layers.

Alternatively, a third adhesive layer is formed between the liquid crystal panel and the second polarizing plate, and the third adhesive layer has an elastic modulus smaller than that of the first and second adhesive layers.

According to the present invention, by providing a curved liquid crystal display, it is possible to prevent a deviation between the distance from the main viewing area to the central area of the display device and the distance to both areas. Therefore, there is an effect of improving the degree of immersion of the viewer.

In addition, by forming the first and second adhesive layers on both sides of the upper polarizing plate, the curved liquid crystal display device of the present invention is bent with a certain curvature toward the upper polarizing plate by the contracting force of the first and second adhesive layers due to adhesion stress. All.

Accordingly, when a curved liquid crystal display is manufactured by artificially bending a flat display device, a stress applied locally to the curved liquid crystal display may be removed, thereby preventing light leakage.

In addition, since an annealing process is not required, manufacturing time and cost can be reduced.

1 is a schematic diagram of a general liquid crystal display device.
2 is a schematic diagram of a curved liquid crystal display according to a first embodiment of the present invention.
3 is a diagram illustrating light leakage generated in the curved liquid crystal display according to the first embodiment of the present invention.
4 is a schematic cross-sectional view of a curved liquid crystal display device according to a first embodiment of the present invention.
5A is a view showing an arrangement of liquid crystal molecules on an inner surface of a first substrate at one corner of a curved liquid crystal display according to the first embodiment of the present invention, and FIG. 5B is a curved surface according to the first embodiment of the present invention. It is a view showing the arrangement of liquid crystal molecules on the inner surface of the second substrate at one corner of the liquid crystal display, and FIG. 5C is a view showing the arrangement of the liquid crystal molecules of FIGS. 5A and 5B together.
6 is a schematic cross-sectional view of a curved liquid crystal display according to a second embodiment of the present invention.
7 is a cross-sectional view schematically illustrating a liquid crystal panel of a curved liquid crystal display device according to a second exemplary embodiment of the present invention, illustrating one pixel area.
8A and 8B are cross-sectional views schematically illustrating a first polarizing plate and a second polarizing plate for a curved liquid crystal display according to a second embodiment of the present invention, respectively, showing a state before attachment.
9 is a schematic cross-sectional view of a curved liquid crystal display according to a third embodiment of the present invention.
10 is a schematic cross-sectional view of a curved liquid crystal display according to a fourth exemplary embodiment of the present invention.
11 is a schematic cross-sectional view of a curved liquid crystal display according to a fifth embodiment of the present invention.

Hereinafter, the present invention capable of solving the above problems will be described with reference to the drawings.

-First Example-

2 is a schematic diagram of a curved liquid crystal display according to a first embodiment of the present invention.

As shown in FIG. 2, the curved liquid crystal display 100 according to the first embodiment of the present invention has a curved shape. That is, the flat display device is curved at a constant curvature based on the center to form a curved surface.

Accordingly, the first distance d11 from the viewer's main viewing area to the center area of the curved liquid crystal display 100 and the second distance d12 from the main viewing area to the left and right sides of the curved liquid crystal display 100 are Since they are substantially the same, the problem of distance deviation in the conventional flat panel display device is solved and the viewer's immersion is improved.

However, since the curved liquid crystal display 100 according to the first embodiment of the present invention artificially forms a curvature, light leakage occurs at four corners as shown in FIG. 3.

This light leakage will be described with reference to FIGS. 4 and 5A to 5C.

4 is a schematic cross-sectional view of a curved liquid crystal display device according to a first embodiment of the present invention. 5A is a view showing an arrangement of liquid crystal molecules on an inner surface of a first substrate at one corner of a curved liquid crystal display according to the first embodiment of the present invention, and FIG. 5B is a curved surface according to the first embodiment of the present invention. It is a view showing the arrangement of liquid crystal molecules on the inner surface of the second substrate at one corner of the liquid crystal display, and FIG. 5C is a view showing the arrangement of the liquid crystal molecules of FIGS. 5A and 5B together.

As shown in FIG. 4, the curved liquid crystal display 100 according to the first embodiment of the present invention includes a first substrate 110, a second substrate 120, and first and second substrates 110, 120) and a liquid crystal layer 130 therebetween. A seal pattern 140 for preventing leakage of the liquid crystal layer 130 is formed at an edge between the first and second substrates 110 and 120.

Although not shown, on the inner surface of the first substrate 110, a gate wiring and a data wiring crossing each other to define a pixel region, a thin film transistor connected to the gate wiring and data wiring, and a pixel electrode formed in the pixel region and connected to the thin film transistor , And a common electrode for generating an electric field is formed together with the pixel electrode. This first substrate 110 is referred to as an array substrate.

Also, although not shown, a black matrix and a color filter layer may be formed on the inner surface of the second substrate 120. The black matrix is positioned corresponding to the gate wiring, the data wiring, and the thin film transistor, has an opening corresponding to the pixel area, and blocks light other than the pixel area. The color filter layer corresponds to the opening of the black matrix and includes red, green, and blue color filters sequentially arranged, and one color filter corresponds to one pixel area. This second substrate 120 is referred to as a color filter substrate.

Meanwhile, first and second alignment layers (not shown) having alignment axes in a predetermined direction are formed on the uppermost layer of the inner surfaces of the first substrate 110 and the second substrate 120, respectively, so that the liquid crystal molecules of the liquid crystal layer 130 are formed. Determine the initial arrangement.

In addition, a lower polarizing plate and an upper polarizing plate (not shown) are disposed on outer surfaces of the first substrate 110 and the second substrate 120, respectively, and the light transmission axis of the lower polarizing plate is disposed perpendicular to the light transmission axis of the upper polarizing plate. .

The curved liquid crystal display 100 according to the first embodiment of the present invention is transformed from a flat state to a curved state.

As an example, the curved liquid crystal display device 100 according to the first embodiment of the present invention includes the second substrate 120 along the horizontal direction to implement a curved surface in a horizontal direction, that is, a long side direction. By making it bend toward the side with a constant curvature, it has a curved shape. However, since the edges of the first substrate 110 and the second substrate 120 are bonded to each other by the seal pattern 140, the behavior of the first substrate 110 and the second substrate 120 to bend is different.

That is, in the curved liquid crystal display device 100, a tensile stress is applied to the first substrate 110 on the outside of the bent side along the horizontal direction, and the second substrate 120 on the inside of the curved surface is applied along the horizontal direction. Compressive stress is applied. However, since the edges of the first and second substrates 110 and 120 are fixed by the seal pattern 140, torsional stress is applied to the edges of the first and second substrates 110 and 120. ) Is generated, and the first substrate 110 and the second substrate 120 are shifted in opposite directions.

At this time, the torsional stress is greatest at the four corners of the first substrate 110 and the second substrate 120, and the alignment axes of the first and second alignment layers (not shown) are twisted due to the torsional stress. And the arrangement of liquid crystal molecules adjacent to the inner surfaces of the second substrates 110 and 120 are distorted, and light leakage occurs at four corners.

That is, as the alignment axes of the first and second alignment layers are twisted in opposite directions to each other, as shown in FIG. 5A, at one corner of the curved liquid crystal display according to the first embodiment of the present invention, the first The liquid crystal molecules 131 located on the inner surface of the substrate (110 in FIG. 4) are rotated clockwise with respect to the initial alignment axis, and as shown in FIG. 5B, the liquid crystal molecules located on the inner surface of the second substrate (120 in FIG. 4) Molecules 132 rotate counterclockwise with respect to the initial orientation axis.

Therefore, as shown in FIG. 5C, the liquid crystal molecules 131 located on the inner surface of the first substrate (110 in FIG. 4) and the liquid crystal molecules 132 located on the inner surface of the second substrate (120 in FIG. 4) are at a certain angle. It is twisted and arranged with (θ1).

Light leakage occurs due to the misalignment of the liquid crystal molecules 131 and 132.

On the other hand, by manufacturing a curved liquid crystal display by annealing the liquid crystal display in a flat state for a long time, such initial light leakage can be prevented.

However, annealing is a method of forming a curved surface using uniform shrinkage by evaporating moisture from a polarizing plate. When the thus manufactured curved liquid crystal display is left at room temperature, the polarizing plate absorbs moisture and the curved liquid crystal display is It is transformed into a flat state again. At this time, compressive stress is generated along the transverse direction in the first substrate (110 in FIG. 4), and tensile stress acts in the transverse direction in the second substrate (120 in FIG. 4), so that the first substrate (110 in FIG. ) And the edge of the second substrate (120 in FIG. 4), a torsional stress is generated in a direction opposite to that when it is deformed from a flat state to a curved state.

Due to this torsional stress, the alignment axes of the first and second alignment layers are bent, and the arrangement of liquid crystal molecules adjacent to the inner surfaces of the first substrate (110 in FIG. 4) and the second substrate (120 in FIG. 4) is distorted. Light leakage occurs at the four corners.

In addition, this annealing method requires specific equipment, which is expensive and requires a lot of manufacturing time.

-Second Example-

6 is a schematic cross-sectional view of a curved liquid crystal display according to a second embodiment of the present invention, and FIG. 7 is a schematic cross-sectional view of a liquid crystal panel of a curved liquid crystal display according to a second embodiment of the present invention. 8A and 8B are cross-sectional views schematically illustrating a first polarizing plate and a second polarizing plate for a curved liquid crystal display according to the second embodiment of the present invention, respectively, showing a state before attachment. Here, for convenience, the curved liquid crystal display is shown in a flat form.

As shown in FIG. 6, the curved liquid crystal display 200 according to the second embodiment of the present invention includes a liquid crystal panel 210, which is a display panel, and a first polarizing plate positioned on a first side of the liquid crystal panel 210. 260 and a second polarizing plate 270 positioned on the second side of the liquid crystal panel 210. In addition, the curved liquid crystal display 200 further includes a backlight unit (not shown) positioned under the second polarizing plate 270.

Referring to FIG. 7, the liquid crystal panel 210 includes a first substrate 220, a second substrate 240, and a liquid crystal layer 250 between the first and second substrates 220 and 240.

A gate wiring (not shown), a gate electrode 222, and a common wiring (not shown) are formed on the inner surface of the first substrate 220. The gate wiring extends along the first direction, and the gate electrode 222 is connected to the gate wiring. The gate electrode 222 may extend from the gate wiring or may be a part of the gate wiring. The common wiring extends parallel to the gate wiring along the first direction.

A gate insulating layer 224 is formed on the gate wiring, the gate electrode 222 and the common wiring. The gate insulating layer 224 may be formed of an inorganic insulating material of silicon nitride (SiNx) or silicon oxide (SiO ₂ ).

A semiconductor layer 226 is formed on the gate insulating layer 224 to correspond to the gate electrode 222. The semiconductor layer 226 includes an active layer 226a of intrinsic amorphous silicon and an ohmic contact layer 226b of impurity-doped amorphous silicon.

The source and drain electrodes 228 and 229 are formed on the semiconductor layer 226, the source and drain electrodes 228 and 229 are spaced apart from the semiconductor layer 226, and the ohmic contact layer 226b is a source And the drain electrodes 228 and 229 have the same shape. The active layer 226a is exposed between the source and drain electrodes 228 and 229, and the active layer 226a is the same as the source and drain electrodes 228 and 229 except between the source and drain electrodes 228 and 229. It can have a shape.

The gate electrode 222, the semiconductor layer 226, the source electrode 228, and the drain electrode 229 form a thin film transistor T, and the active layer 226a exposed between the source and drain electrodes 228 and 229 ) Becomes a channel of the thin film transistor T.

In addition, a data line (not shown) is formed of the same material on the same layer as the source and drain electrodes 228 and 229. The data line extends in a second direction perpendicular to the first direction, and crosses the gate line to define a pixel region. The data line is connected to the source electrode 228, and a dummy semiconductor pattern having the same structure as the semiconductor layer 226 may be formed under the data line.

A first protective layer 230 is formed on the source and drain electrodes 228 and 229 and the data line. The first protective layer 230 may be formed of an inorganic insulating material of silicon oxide (SiO ₂ ) or silicon nitride (SiNx).

A second protective layer 232 is formed on the first protective layer 230. The second protective layer 232 has a flat surface and has a drain contact hole 232a exposing the drain electrode 229 together with the first protective layer 230. The second protective layer 232 may be formed of an organic insulating material such as benzocyclobutene (BCB) or photo acryl.

Here, one of the first protective layer 230 and the second protective layer 232 may be omitted.

A pixel electrode 234 and a common electrode 236 are formed in the pixel area above the second protective layer 232. The pixel electrode 234 contacts the drain electrode 229 through the drain contact hole 232a. The common electrodes 236 contact the common wiring and are alternately disposed to be spaced apart from the pixel electrode 234. The pixel electrode 234 and the common electrode 236 may be formed of a transparent conductive material such as indium tin oxide or indium zinc oxide.

A black matrix 242 is formed on the inner surface of the second substrate 240. The black matrix 242 has an opening corresponding to a pixel region, and may be formed to correspond to a gate line (not shown), a data line (not shown), and a thin film transistor T.

A color filter layer 244 is formed under the black matrix 242 to correspond to the opening of the black matrix 242. The color filter layer 244 includes green and blue color filters, and one color filter is sequentially and repeatedly arranged in correspondence to one pixel area.

Here, a structure in which the color filter layer 244 is formed on the second substrate 240 has been described, but the color filter layer may be formed on the first substrate 220. That is, in the curved liquid crystal display 200 according to the second embodiment of the present invention, a color filter on array (COT) in which a color filter layer is formed on the thin film transistor T on the first substrate 220 It can have a structure.

The COT structure can increase the aperture ratio by reducing the bonding margins of the first and second substrates 220 and 240, and in this case, the black matrix may be omitted, and when the black matrix is omitted, the aperture ratio can be further increased.

An overcoat layer (not shown) may be formed under the color filter layer 244 to protect and planarize the color filter layer 244.

Meanwhile, although not shown, a first alignment layer is formed on the pixel electrode 234 and the common electrode 236 of the first substrate 220, and a second alignment layer is formed under the color filter layer 244 of the second substrate 240. Is formed. The first alignment layer and the second alignment layer are rubbed or photo-aligned in a predetermined direction, so that the surfaces of the first alignment layer and the second alignment layer have orientation.

A liquid crystal layer 250 is positioned between the first alignment layer and the second alignment layer. The liquid crystal molecules of the liquid crystal layer 250 have an initial arrangement state according to the alignment directions of the first and second alignment layers.

A first polarizing plate 260, which is an upper polarizing plate, is attached to an upper surface of the liquid crystal panel 210 through the first adhesive layer 262a. That is, the first surface of the first polarizing plate 260 is adhered to the second substrate (240 in FIG. 7) of the liquid crystal panel 210 through the first adhesive layer 262a.

The first polarizing plate 260 includes a first polarizing layer 260a and first and second protective films 260b and 260c. The first polarization layer 260a is positioned between the first and second protective films 260b and 260c, and from the top surface of the liquid crystal panel 210, the first protective film 260b, the first polarization layer 260a, and It is positioned in the order of the second protective film 260c.

The first polarization layer 260a may be made of polyvinyl alcohol (PVA), and each of the first and second protective films 260b and 260c is tri-acetyl cellulose (TAC) or cyclic olefin It may be made of a cyclic olefin polymer (COP). Here, the first and second protective films 260b and 260c are also referred to as support films.

In addition, a second adhesive layer 262b is formed on the second surface of the first polarizing plate 260. Accordingly, the first adhesive layer 262a contacts the first protective film 260b, and the second adhesive layer 262b contacts the second protective film 260c.

Each of the first and second adhesive layers 262a and 262b may be an adhesive, that is, a pressure sensitive adhesive (PSA), and the first and second adhesive layers 262a and 262b may be made of the same material. have. Alternatively, the first and second adhesive layers 262a and 262b may be formed of different materials.

The adhesive can be divided into a hard type and a soft type according to the elastic modulus, more specifically, the storage modulus.When the elastic modulus is greater than 70,000 Pa, the adhesive becomes a hard type, and when it is small, it becomes a soft type.

Both the first and second adhesive layers 262a and 262b may be of a hard type or a soft type, and both of them are preferably of a hard type. When the first and second adhesive layers 262a and 262b are of the hard type, the elastic modulus of the first and second adhesive layers 262a and 262b may be 150,000 Pa, and when the first and second adhesive layers 262a and 262b are of the soft type, the first and second adhesives The elastic modulus of the layers 262a and 262b may be 40,000 Pa.

Unlike this, one of the first and second adhesive layers 262a and 262b may be a hard type and the other may be a soft type. In this case, it is preferable that the first adhesive layer 262a is of a soft type and the second adhesive layer 262b is of a hard type. That is, it is preferable that the elastic modulus of the first adhesive layer 262a is smaller than that of the second adhesive layer 262b.

Referring to FIG. 8A, the first polarizing plate 260 stretches polyvinyl alcohol salted with iodine ions to form a first polarizing layer 260a having an absorption axis in the stretching direction, and the first polarizing layer 260a ) To prevent contraction of the first and second protective films 260b and 260c on both sides of the first polarizing layer 260a, and the first and second protective films 260b and 260c outside the first and second protective films 260b and 260c. It is formed by attaching the second adhesive layers 262a and 262b, and the first polarizing plate 260 includes first and second release films outside the first and second adhesive layers 262a and 262b, respectively. It is supplied in the form of a separatable protection film) (264a, 264b) attached.

Subsequently, the first release film 264a is removed, the first adhesive layer 262a is attached to the outer surface of the second substrate 240 of the liquid crystal panel 210, and the second release film 264b is removed to provide a second adhesive. The layer 262b is exposed.

Meanwhile, a second polarizing plate 270, which is a lower polarizing plate, is attached to a lower surface of the liquid crystal panel 210 on the second side through the third adhesive layer 272. That is, one surface of the second polarizing plate 270 is adhered to the first substrate (220 of FIG. 7) of the liquid crystal panel 210 through the third adhesive layer 272.

The third adhesive layer 272 may be a hard type or a soft type, and the elastic modulus of the third adhesive layer 272 is preferably smaller than that of the first and second adhesive layers 262a and 262b.

The second polarizing plate 270 includes a second polarizing layer 270a and third and fourth protective films 270b and 270c. The second polarization layer 270a is positioned between the third and fourth protective films 270b and 270c, and the third protective film 270b, the second polarization layer 270a, and the lower surface of the liquid crystal panel 210 It is positioned in the order of the fourth protective film 270c.

The second polarization layer 270a may be made of polyvinyl alcohol (PVA), and each of the third and fourth protective films 270b and 270c is tri-acetyl cellulose (TAC) or cyclic olefin. It may be made of a cyclic olefin polymer (COP). Here, the third and fourth protective films 270b and 270c may be referred to as support films.

Referring to FIG. 8B, the second polarizing plate 270 forms a second polarizing layer 270a having an absorption axis in the stretching direction by stretching polyvinyl alcohol salted with iodine ions, and a second polarizing layer 270a. ) To prevent shrinkage, the third and fourth protective films 270b and 270c are attached to both sides of the second polarizing layer 270a, and the third adhesive layer 272 is attached to the outside of the third protective film 270b. It is formed by attaching, and the second polarizing plate 270 is formed on the outside of the third adhesive layer 272 and the fourth protective film 270c, respectively, with third and fourth release films (release film or separatable protection film) 274a, 274b) is supplied in the attached form.

Then, the third release film 274a is removed, the third adhesive layer 272 is attached to the outer surface of the first substrate 220 of the liquid crystal panel 210, and the fourth release film 274b is removed to protect the fourth. The film 270c is exposed.

In addition, a backlight unit (not shown) is positioned under the second polarizing plate 270 to supply light to the liquid crystal panel 210.

In the curved liquid crystal display 200 according to the second embodiment of the present invention, the first and second adhesive layers 262a and 262b are formed on both sides of the first polarizing plate 260, so that the first polarizing plate 260 When is attached to the liquid crystal panel 210, not only the first adhesive layer 262a but also the second adhesive layer 262b contract due to adhesion stress. Here, the shrinkage rate of the second adhesive layer 262b may be greater than that of the second protective film 260c.

Due to the contraction force of the first and second adhesive layers 262a and 262b, the curved liquid crystal display 200 according to the second embodiment has a constant curvature toward the second substrate 240, that is, the first polarizing plate 260. Bend with In this case, the amount of warpage of the curved liquid crystal display 200 according to the second embodiment, that is, the distance from the edge to the center of the curved liquid crystal display 200 is about 3 to 4 mm.

Accordingly, when the curved liquid crystal display 200 is manufactured by artificially bending the flat display device, a stress applied locally to the curved liquid crystal display 200 can be removed, thereby preventing light leakage. In addition, since an annealing process is not required, manufacturing time and cost can be reduced.

As mentioned above, each of the first and second adhesive layers 262a and 262b may be of a hard type or a soft type, and at least one of the adhesive layers is of a hard type, which is advantageous in obtaining a curved effect. In this case, the fact that the second adhesive layer 262b is a hard type and the first adhesive layer 262a is a soft type is more than that the first adhesive layer 262a is a hard type and the second adhesive layer 262b is a soft type. A large curved effect can be obtained, and when both the first and second adhesive layers 262a and 262b are of a hard type, the largest curved effect can be obtained. In addition, it is preferable that the elastic modulus of the third adhesive layer 272 is smaller than that of the first and second adhesive layers 262a and 262b.

In the curved liquid crystal display 200 according to the second embodiment of the present invention, a similar effect may be obtained by using a layer having a higher shrinkage than that of the second protective film 260c instead of the second adhesive layer 262b.

-Third Example-

9 is a schematic cross-sectional view of a curved liquid crystal display according to a third embodiment of the present invention.

9, the curved liquid crystal display 300 according to the third embodiment of the present invention includes a liquid crystal panel 310, which is a display panel, and a first polarizing plate positioned on the first side of the liquid crystal panel 310. And a second polarizing plate 370 positioned on the second side of the liquid crystal panel 310. In addition, the curved liquid crystal display 300 further includes a backlight unit (not shown) positioned under the second polarizing plate 370.

Here, the liquid crystal panel 310 may have the same structure as the liquid crystal panel 210 of FIG. 7 of the curved liquid crystal display according to the second exemplary embodiment illustrated in FIG. 7.

A first polarizing plate 360, which is an upper polarizing plate, is attached to an upper surface of the liquid crystal panel 310 through the first adhesive layer 362a.

The first polarizing plate 360 includes a first polarizing layer 360a and first and second protective films 360b and 360c. The first polarization layer 360a is positioned between the first and second protective films 360b and 360c, and from the top surface of the liquid crystal panel 310, the first protective film 360b, the first polarization layer 360a, and It is positioned in the order of the second protective film 360c.

The first polarization layer 360a may be made of polyvinyl alcohol (PVA), and each of the first and second protective films 360b and 360c is tri-acetyl cellulose (TAC) or cyclic olefin It may be made of a cyclic olefin polymer (COP).

In addition, a second adhesive layer 362b is formed on the second surface of the first polarizing plate 360. Accordingly, the first adhesive layer 362a contacts the first protective film 360b, and the second adhesive layer 362b contacts the second protective film 360c.

Each of the first and second adhesive layers 362a and 362b may be an adhesive, that is, a pressure sensitive adhesive (PSA), and the first and second adhesive layers 362a and 362b may be made of the same material. have. Alternatively, the first and second adhesive layers 362a and 362b may be formed of different materials.

Both the first and second adhesive layers 362a and 362b may be of a hard type or a soft type, and both of them are preferably of a hard type. When the first and second adhesive layers 362a and 362b are of a hard type, the elastic modulus of the first and second adhesive layers 362a and 362b may be 150,000 Pa, and in the case of a soft type, the first and second adhesives The elastic modulus of the layers 362a and 362b may be 40,000 Pa.

Unlike this, one of the first and second adhesive layers 362a and 362b may be a hard type and the other may be a soft type. At this time, it is preferable that the first adhesive layer 362a is of a soft type and the second adhesive layer 362b is of a hard type. That is, it is preferable that the elastic modulus of the first adhesive layer 362a is smaller than that of the second adhesive layer 362b.

In the curved liquid crystal display 300 according to the third embodiment of the present invention, the surface treatment layer 366 is formed on the outer surface of the second adhesive layer 362b. The surface treatment layer 366 may be formed by a lamination method. The surface treatment layer 366 may be an anti-static layer, a hard coating layer, or a low-reflection layer, and a single layer has various functions, or a layer of various functions is stacked. It can be a structure.

Meanwhile, a second polarizing plate 370, which is a lower polarizing plate, is attached to a lower surface of the liquid crystal panel 310 on the second side through the third adhesive layer 372.

The third adhesive layer 372 may be a hard type or a soft type, and the elastic modulus of the third adhesive layer 372 is preferably smaller than that of the first and second adhesive layers 362a and 362b.

The second polarizing plate 370 includes a second polarizing layer 370a and third and fourth protective films 370b and 370c. The second polarization layer 370a is positioned between the third and fourth protective films 370b and 370c, and the third protective film 370b, the second polarization layer 370a from the lower surface of the liquid crystal panel 310, and It is positioned in the order of the fourth protective film 370c.

The second polarization layer 370a may be made of polyvinyl alcohol (PVA), and each of the third and fourth protective films 370b and 370c is tri-acetyl cellulose (TAC) or cyclic olefin. It may be made of a cyclic olefin polymer (COP).

In addition, a backlight unit (not shown) is positioned under the second polarizing plate 370 to supply light to the liquid crystal panel 310.

In the curved liquid crystal display device 300 according to the third embodiment of the present invention, the first and second adhesive layers 362a and 362b are formed on both sides of the first polarizing plate 360, so that the first polarizing plate 360 When is attached to the liquid crystal panel 310, not only the first adhesive layer 362a but also the second adhesive layer 362b contracts due to adhesion stress.

At this time, since the surface treatment layer 366 is formed on the outer surface of the second adhesive layer 362b, the second adhesive layer 362b is subjected to the second adhesiveness of the second embodiment due to the adhesion stress with the surface treatment layer 366. It shrinks more than the layer (262b in Fig. 6).

Due to the contracting force of the first and second adhesive layers 362a and 362b, the curved liquid crystal display 300 according to the third exemplary embodiment is bent toward the first polarizing plate 360 with a constant curvature. Here, the amount of warpage of the curved liquid crystal display 300 according to the third embodiment is about 7 to 8 mm.

Accordingly, when the curved liquid crystal display 300 is manufactured by artificially bending the display device in a flat state, a stress applied locally to the curved liquid crystal display 300 may be removed, thereby preventing light leakage. In addition, since an annealing process is not required, manufacturing time and cost can be reduced.

As mentioned above, each of the first and second adhesive layers 362a and 362b may be of a hard type or a soft type, and at least one of the adhesive layers is of a hard type, which is advantageous in obtaining a curved effect. In this case, the fact that the second adhesive layer 362b is a hard type and the first adhesive layer 362a is a soft type is more than that the first adhesive layer 362a is a hard type and the second adhesive layer 362b is a soft type. A large curved effect can be obtained, and when both the first and second adhesive layers 362a and 362b are of a hard type, the largest curved effect can be obtained. In addition, it is preferable that the elastic modulus of the third adhesive layer 372 is smaller than that of the first and second adhesive layers 362a and 362b.

-Example 4-

10 is a schematic cross-sectional view of a curved liquid crystal display according to a fourth embodiment of the present invention. The curved liquid crystal display according to the fourth embodiment of the present invention displays a 3D stereoscopic image.

As shown in FIG. 10, the curved liquid crystal display 400 according to the fourth embodiment of the present invention includes a liquid crystal panel 410, which is a display panel, and a first polarizing plate positioned on a first side of the liquid crystal panel 410. 460, a second polarizing plate 470 positioned on the second side of the liquid crystal panel 410, and a film patterned retarder (FPR) 480 on the outer surface of the first polarizing plate 460 . In addition, the curved liquid crystal display 400 further includes a backlight unit (not shown) positioned under the second polarizing plate 470.

The liquid crystal panel 410 includes a left-eye horizontal pixel line for displaying a left-eye image and a right-eye horizontal pixel line for displaying a right-eye image, and the left-eye horizontal pixel line and the right-eye horizontal pixel line alternately along the vertical direction of the liquid crystal panel 410. And each of the left-eye horizontal pixel line and the right-eye horizontal pixel line includes red, green, and blue pixel regions sequentially and repeatedly arranged along the horizontal direction of the liquid crystal panel 410.

The liquid crystal panel 410 may include a pixel region having the same structure as the liquid crystal panel 210 of FIG. 7 of the curved liquid crystal display according to the second exemplary embodiment illustrated in FIG. 7.

A first polarizing plate 460, which is an upper polarizing plate, is attached to an upper surface of the first side of the liquid crystal panel 410 through the first adhesive layer 462a.

The first polarizing plate 460 includes a first polarizing layer 460a and first and second protective films 460b and 460c. The first polarization layer 460a is positioned between the first and second protective films 460b and 460c, and from the upper surface of the liquid crystal panel 410, the first protective film 460b, the first polarization layer 460a, and It is positioned in the order of the second protective film 460c.

The first polarization layer 460a may be made of polyvinyl alcohol (PVA), and each of the first and second protective films 460b and 460c is tri-acetyl cellulose (TAC) or cyclic olefin It may be made of a cyclic olefin polymer (COP).

In addition, a second adhesive layer 462b is formed on the second surface of the first polarizing plate 460. Accordingly, the first adhesive layer 462a contacts the first protective film 460b, and the second adhesive layer 462b contacts the second protective film 460c.

Each of the first and second adhesive layers 462a and 462b may be an adhesive, that is, a pressure sensitive adhesive (PSA), and the first and second adhesive layers 462a and 462b may be made of the same material. have. Alternatively, the first and second adhesive layers 462a and 462b may be formed of different materials.

Both the first and second adhesive layers 462a and 462b may be of a hard type or a soft type, and both of them are preferably of a hard type. When the first and second adhesive layers 462a and 462b are of the hard type, the elastic modulus of the first and second adhesive layers 462a and 462b may be 150,000 Pa, and when the first and second adhesive layers 462a and 462b are of the soft type, the first and second adhesives The elastic modulus of the layers 462a and 462b may be 40,000 Pa.

Unlike this, one of the first and second adhesive layers 462a and 462b may be a hard type and the other may be a soft type. In this case, it is preferable that the first adhesive layer 462a is a soft type and the second adhesive layer 462b is a hard type. That is, it is preferable that the elastic modulus of the first adhesive layer 462a is smaller than that of the second adhesive layer 462b.

In the curved liquid crystal display device 400 according to the fourth embodiment of the present invention, the film patterned retarder 480 is attached to the outer surface of the second adhesive layer 462b. The film patterned retarder 480 may be attached to the second adhesive layer 462b by a lamination method.

Although not shown, the film patterned retarder 480 includes a left eye retarder and a right eye retarder, and the left eye retarder and the right eye retarder of the film patterned retarder 480 are respectively They are alternately arranged along the vertical direction of the liquid crystal panel 410 to correspond to the pixel line and the right eye horizontal pixel line.

The left-eye retarder modulates linearly polarized light into left circularly polarized light and outputs it, and the right-eye retarder modulates and outputs linearly polarized light into right circularly polarized light.

In addition, a surface treatment layer 482 is formed on the other surface of the film patterned retarder 480. The surface treatment layer 482 may be formed on the other surface of the film patterned retarder 480 by a lamination method. The surface treatment layer 482 may be an anti-static layer, a hard coating layer, or a low-reflective layer, and a single layer may have various functions, or layers of various functions are stacked. It can be a structure.

The film patterned retarder 480 is in a state in which the surface treatment layer 482 is formed on the other surface, and one surface is attached to the second protective film 460c of the first polarizing plate 460 through the second adhesive layer 462b. Can be.

Meanwhile, a second polarizing plate 470, which is a lower polarizing plate, is attached to the lower surface of the liquid crystal panel 410 through the third adhesive layer 472.

The third adhesive layer 472 may be a hard type or a soft type, and the elastic modulus of the third adhesive layer 472 is preferably smaller than that of the first and second adhesive layers 462a and 462b.

The second polarizing plate 470 includes a second polarizing layer 470a and third and fourth protective films 470b and 470c. The second polarization layer 470a is positioned between the third and fourth protective films 470b and 470c, and the third protective film 470b, the second polarization layer 470a, and the lower surface of the liquid crystal panel 410 It is positioned in the order of the fourth protective film 470c.

The second polarization layer 470a may be made of polyvinyl alcohol (PVA), and each of the third and fourth protective films 470b and 470c is tri-acetyl cellulose (TAC) or cyclic olefin. It may be made of a cyclic olefin polymer (COP).

In addition, a backlight unit (not shown) is positioned under the second polarizing plate 470 to supply light to the liquid crystal panel 410.

In the curved liquid crystal display device according to the fourth embodiment of the present invention, the left eye image displayed by the horizontal pixel line of the left eye of the liquid crystal panel 410 is output as linearly polarized light through the first polarization layer 460, and then the film is patterned. The right-eye image, which is left circularly polarized while passing through the left-eye retarder of the retarder 480, and displayed by the right-eye horizontal pixel line of the liquid crystal panel 410, is output as linearly polarized light through the first polarization layer 460, and then the film pattern As it passes through the right-eye retarder of the de retarder 480, it is right-circularly polarized and transmitted to the viewer.

At this time, the viewer may be wearing polarized glasses. The polarized glasses worn by the viewer include a left-eye lens and a right-eye lens, and the left-eye lens transmits only the left circularly polarized light and the right-eye lens transmits only the right circularly polarized light.

Therefore, among the images transmitted to the viewer, the left circularly polarized left eye image is transmitted to the viewer's left eye through the left eye lens, and the right circularly polarized right eye image is transmitted to the viewer's right eye through the right eye lens. A 3D stereoscopic image is recognized by combining the left eye image and the right eye image.

In the curved liquid crystal display device 400 according to the fourth embodiment of the present invention, the first and second adhesive layers 462a and 462b are formed on both sides of the first polarizing plate 460, and thus the first polarizing plate 460 When) is attached to the liquid crystal panel 410, not only the first adhesive layer 462a but also the second adhesive layer 462b contract due to adhesion stress.

At this time, since the film patterned retarder 480 and the surface treatment layer 482 are attached to the outer surface of the second adhesive layer 462b, the second adhesive layer 462b is adhered to the film patterned retarder 480 As a result, it shrinks more than the second adhesive layer (362b in FIG. 9) of the third embodiment.

Due to the contracting force of the first and second adhesive layers 462a and 462b, the curved liquid crystal display 400 according to the fourth exemplary embodiment is bent toward the first polarizing plate 460 with a constant curvature. Here, the amount of warpage of the curved liquid crystal display 400 according to the fourth embodiment is about 9 to 10 mm.

Accordingly, when the curved liquid crystal display 400 is manufactured by artificially bending the flat display device, a stress applied locally to the curved liquid crystal display 400 can be removed, thereby preventing light leakage. In addition, since an annealing process is not required, manufacturing time and cost can be reduced.

As mentioned above, each of the first and second adhesive layers 462a and 462b may be of a hard type or a soft type, and at least one of the adhesive layers is of a hard type, which is advantageous in obtaining a curved effect. In this case, when the second adhesive layer 462b is a hard type and the first adhesive layer 462a is a soft type, a larger curved effect can be obtained, and both the first and second adhesive layers 462a and 462b are of a hard type. In the case of, the largest curved surface effect can be obtained. In addition, it is preferable that the elastic modulus of the third adhesive layer 472 is smaller than that of the first and second adhesive layers 462a and 462b.

-Fifth Example-

11 is a schematic cross-sectional view of a curved liquid crystal display according to a fifth embodiment of the present invention. The curved liquid crystal display according to the fifth embodiment of the present invention displays a 3D stereoscopic image.

As shown in FIG. 11, the curved liquid crystal display 500 according to the fifth embodiment of the present invention includes a liquid crystal panel 510, which is a display panel, and a first polarizing plate positioned on a first side of the liquid crystal panel 510. 560, a second polarizing plate 570 positioned on the second side of the liquid crystal panel 4510, and a film patterned retarder (FPR) 580 on the outer surface of the first polarizing plate 560 . In addition, the curved liquid crystal display 500 further includes a backlight unit (not shown) positioned under the second polarizing plate 570.

The liquid crystal panel 510 includes a left-eye horizontal pixel line for displaying a left-eye image and a right-eye horizontal pixel line for displaying a right-eye image, and the left-eye horizontal pixel line and the right-eye horizontal pixel line alternately along the vertical direction of the liquid crystal panel 510. And each of the left-eye horizontal pixel line and the right-eye horizontal pixel line includes red, green, and blue pixel regions that are sequentially and repeatedly arranged along the horizontal direction of the liquid crystal panel 510.

The liquid crystal panel 510 may include a pixel region having the same structure as the liquid crystal panel 210 of FIG. 7 of the curved liquid crystal display according to the second exemplary embodiment illustrated in FIG. 7.

A first polarizing plate 560, which is an upper polarizing plate, is attached to the upper surface of the liquid crystal panel 510 through the first adhesive layer 562a.

The first polarizing plate 560 includes a first polarizing layer 560a and first and second protective films 560b and 560c. The first polarization layer 560a is located between the first and second protective films 560b and 560c, and from the top surface of the liquid crystal panel 510, the first protective film 560b, the first polarization layer 560a, and It is positioned in the order of the second protective film 560c.

The first polarizing layer 560a may be made of polyvinyl alcohol (PVA), and each of the first and second protective films 560b and 560c is tri-acetyl cellulose (TAC) or cyclic olefin It may be made of a cyclic olefin polymer (COP).

In addition, a second adhesive layer 562b is formed on the second surface of the first polarizing plate 560. Accordingly, the first adhesive layer 562a contacts the first protective film 560b, and the second adhesive layer 562b contacts the second protective film 560c.

Each of the first and second adhesive layers 562a and 562b may be an adhesive, that is, a pressure sensitive adhesive (PSA), and the first and second adhesive layers 562a and 562b may be made of the same material. have. Alternatively, the first and second adhesive layers 562a and 562b may be formed of different materials.

Both the first and second adhesive layers 562a and 562b may be of a hard type or a soft type, and both of them are preferably of a hard type. When the first and second adhesive layers 562a and 562b are of the hard type, the elastic modulus of the first and second adhesive layers 562a and 562b may be 150,000 Pa, and when the first and second adhesive layers 562a and 562b are of the soft type, the first and second adhesives The elastic modulus of the layers 562a and 562b may be 40,000 Pa.

Unlike this, one of the first and second adhesive layers 562a and 562b may be a hard type and the other may be a soft type. In this case, it is preferable that the first adhesive layer 562a is a soft type and the second adhesive layer 562b is a hard type. That is, it is preferable that the elastic modulus of the first adhesive layer 562a is smaller than that of the second adhesive layer 562b.

In the curved liquid crystal display device 500 according to the fifth embodiment of the present invention, a film patterned retarder 580 is attached to the outer surface of the second adhesive layer 562b. The film patterned retarder 580 may be attached by a lamination method.

At this time, a third adhesive layer 581 is formed on one surface of the film patterned retarder 580, and the third adhesive layer 581 is adhered to the second adhesive layer 562b. The third adhesive layer 581 may be a hard type or a soft type.

Although not shown, the film patterned retarder 580 includes a left eye retarder and a right eye retarder, and the left eye retarder and the right eye retarder of the film patterned retarder 580 are respectively The pixel lines and the right eye horizontal pixel lines are alternately arranged along the vertical direction of the liquid crystal panel 510.

The left-eye retarder modulates linearly polarized light into left circularly polarized light and outputs it, and the right-eye retarder modulates and outputs linearly polarized light into right circularly polarized light.

In addition, a surface treatment layer 582 is formed on the other surface of the film patterned retarder 580. The surface treatment layer 582 may be formed on the other surface of the film patterned retarder 580 by a lamination method. The surface treatment layer 582 may be an anti-static layer, a hard coating layer, or a low reflection layer, and a single layer has various functions, or a layer of various functions is stacked. It can be a structure.

The film patterned retarder 580 is a state in which a third adhesive layer 581 is formed on one surface and a surface treatment layer 582 is formed on the other surface, and one surface thereof is a third adhesive layer 581 and a second adhesive layer. It may be attached to the second protective film 560c of the first polarizing plate 560 through 562b.

Meanwhile, a second polarizing plate 570, which is a lower polarizing plate, is attached to a lower surface of the liquid crystal panel 510 on the second side through the fourth adhesive layer 572.

The fourth adhesive layer 572 may be a hard type or a soft type, and the elastic modulus of the fourth adhesive layer 572 is preferably smaller than that of the first and second adhesive layers 562a and 562b.

The second polarizing plate 570 includes a second polarizing layer 570a and third and fourth protective films 570b and 570c. The second polarization layer 570a is positioned between the third and fourth protective films 570b and 570c, and the third protective film 570b, the second polarization layer 570a from the lower surface of the liquid crystal panel 510, and It is positioned in the order of the fourth protective film 570c.

The second polarization layer 570a may be made of polyvinyl alcohol (PVA), and each of the third and fourth protective films 570b and 570c is tri-acetyl cellulose (TAC) or cyclic olefin. It may be made of a cyclic olefin polymer (COP).

In addition, a backlight unit (not shown) is positioned under the second polarizing plate 570 to supply light to the liquid crystal panel 510.

In the curved liquid crystal display device 500 according to the fifth embodiment of the present invention, the first and second adhesive layers 562a and 562b are formed on both sides of the first polarizing plate 560, so that the first polarizing plate 560 When) is attached to the liquid crystal panel 510, not only the first adhesive layer 562a but also the second adhesive layer 562b contract due to adhesion stress.

At this time, the film patterned retarder 580 and the surface treatment layer 582 are attached to the outer surface of the second adhesive layer 562b through the third adhesive layer 581, so that not only the second adhesive layer 562b but also the second adhesive layer 562b The third adhesive layer 581 is also contracted, and the second and third adhesive layers 562b and 581 are subjected to adhesion stress with the film patterned retarder 580, so that the second adhesive layer (462b in FIG. 10) ).

Due to the contraction force of the first, second and third adhesive layers 562a, 562b, and 581, the curved liquid crystal display 500 according to the fifth embodiment is bent toward the first polarizing plate 560 with a constant curvature. , The curved liquid crystal display device 500 according to the fifth embodiment has a larger curvature than the curved liquid crystal display device (400 in FIG. 10) according to the fourth embodiment.

Accordingly, when the curved liquid crystal display 500 is manufactured by artificially bending the display device in a flat state, a stress applied locally to the curved liquid crystal display 500 can be removed to prevent light leakage. In addition, since an annealing process is not required, manufacturing time and cost can be reduced.

As mentioned above, each of the first, second, and third adhesive layers 562a, 562b, and 581 may be of a hard type or a soft type, but at least one of the adhesive layers is of a hard type, which is advantageous in obtaining a curved effect. . In this case, the second adhesive layer 562b is a hard type and the first and third adhesive layers 562a and 581 are of a soft type, or the second and third adhesive layers 562b and 581 are of a hard type and the first adhesive layer is When the layer 562a is of a soft type, a larger curved effect can be obtained, and when all of the first, second, and third adhesive layers 562a, 562b, and 581 are of a hard type, the largest curved effect can be obtained. In addition, it is preferable that the elastic modulus of the fourth adhesive layer 572 is smaller than that of the first, second, and third adhesive layers 562a, 562b, and 281.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can do it.

200: curved liquid crystal display 210: liquid crystal panel
260: first polarizing plate 260a: first polarizing layer
260b: first protective film 260c: second protective film
262a: first adhesive layer 262b: second adhesive layer
270: second polarizing plate 270a: second polarizing layer
270b: third protective film 270c: fourth protective film
272: third adhesive layer

Claims (11)

A liquid crystal panel;
A first polarizing plate attached to an upper surface of the liquid crystal panel and including a first polarizing layer and first and second protective films on both sides of the first polarizing layer;
A second polarizing plate attached to a lower surface of the liquid crystal panel and including a second polarizing layer and third and fourth protective films on both sides of the second polarizing layer;
A backlight unit under the second polarizing plate
Including,
First and second adhesive layers are formed on the first and second surfaces of the first polarizing plate, respectively, and the first adhesive layer is positioned between the liquid crystal panel and the first polarizing plate,
A curved liquid crystal display device in which the elastic modulus of the first adhesive layer is smaller than that of the second adhesive layer.
The method of claim 1,
A curved liquid crystal display device, further comprising a surface treatment layer on an outer surface of the second adhesive layer.
The method of claim 2,
A curved liquid crystal display device, further comprising a film patterned retarder including a left-eye retarder and a right-eye retarder between the second adhesive layer and the surface treatment layer.
The method of claim 3,
A curved liquid crystal display device, characterized in that a third adhesive layer is further formed between the second adhesive layer and the film patterned retarder.
The method according to any one of claims 1 to 4,
The first adhesive layer is a curved liquid crystal display, characterized in that the soft type.
The method of claim 5,
The second adhesive layer is a curved liquid crystal display, characterized in that the hard type.
The method of claim 4,
The curved liquid crystal display device, wherein the elastic modulus of the first adhesive layer is smaller than that of the third adhesive layer.
The method of claim 4,
The curved liquid crystal display device, wherein the elastic modulus of the third adhesive layer is smaller than that of the second adhesive layer.
The method of claim 4,
A curved liquid crystal display device, wherein a fourth adhesive layer is formed between the liquid crystal panel and the second polarizing plate, and the fourth adhesive layer has a lower elastic modulus than that of the first, second and third adhesive layers.
The method of claim 1,
A curved liquid crystal display device, characterized in that a third adhesive layer is formed between the liquid crystal panel and the second polarizing plate, and the third adhesive layer has a lower elastic modulus than the first and second adhesive layers. The method of claim 4,
The third adhesive layer is a curved liquid crystal display device in direct contact with the second adhesive layer.

Images