KR20050122369A - Polarizer for liquid crystal display device and liquid crystal display device including the same - Google Patents

Abstract

An object of the present invention, when using a WV polarizing plate can improve the problem that the light leakage, such as hourglass form in the top, bottom, left and right of the periphery of the liquid crystal display device is deformed due to the shrinkage of the polarizing film A polarizing plate for a liquid crystal display device and a liquid crystal display device including the same are provided.

The present invention, a polarizing film for transmitting light parallel to the transmission axis formed in one direction; First and second TAC films positioned below and above the polarizing film to protect the polarizing film; A first liquid crystal layer having a hybrid liquid crystal array and a second liquid crystal layer having a homogeneous liquid crystal array, and including an optical compensation layer positioned below the first TAC film. A polarizing plate for a liquid crystal display device is provided.

The present invention constitutes a discotic liquid crystal layer having optical properties of a C-plate on a polarizing plate attached to a substrate for a liquid crystal display device. Therefore, the TAC film is deformed according to the shrinkage of the polarizing film, so that refractive index anisotropy occurs, thereby improving the generation of light leakage in the form of an hourglass.

Description

Polarizer for liquid crystal display device and liquid crystal display device including same {Polarizer for liquid crystal display device and liquid crystal display device including the same}

The present invention relates to a liquid crystal display device, and more particularly, to a polarizer that is an optical film used in the liquid crystal display device.

In general, a liquid crystal display device displays an image by using optical anisotropy and birefringence characteristics of liquid crystal molecules. When an electric field is applied, the alignment of liquid crystals is changed, and the light transmitting characteristics are also changed according to the arrangement direction of the changed liquid crystals. In general, a liquid crystal display device is formed by arranging two substrates on which electric field generating electrodes are formed so that the surfaces on which the two electrodes are formed face each other, injecting a liquid crystal material between the two substrates, and then applying voltage to the two electrodes. By moving the liquid crystal molecules by the electric field is a device for displaying an image by the transmittance of light that varies accordingly.

1 is a view schematically showing a general liquid crystal display device.

As shown in the drawing, a general color liquid crystal display device 11 has a common color deposited on the black matrix 6 and the color filter layer 8 formed between the color filter layer 8 and the color filter layer 8 of red, green, and blue. The upper substrate 5 on which the electrode 18 is formed, and the pixel region P are defined, and the pixel electrode P and the switching element T are formed in the pixel region P, and the peripheral region of the pixel region P is formed. The lower substrate 22 includes an array wiring, and the liquid crystal 14 is filled between the upper substrate 5 and the lower substrate 22.

 The lower substrate 22 is also called an array substrate, and the thin film transistor T, which is a switching element, is positioned in a matrix type, and the gate wiring 13 passing through the plurality of thin film transistors TFT is crossed. And data wiring 15 is formed. In this case, the pixel region P is a region defined by the intersection of the gate wiring 13 and the data wiring 15. A transparent pixel electrode 17 is formed on the pixel region P as described above.

The pixel electrode 17 uses a transparent conductive metal having excellent light transmittance, such as indium-tin-oxide (ITO). A storage capacitor C _ST connected in parallel with the pixel electrode 17 is formed on the gate wiring 13, and a portion of the gate wiring 13 is used as the first electrode of the storage capacitor C _ST . As the second electrode, an island-shaped source / drain metal layer 30 formed of the same material as the source and drain electrodes is used.

In this case, the source / drain metal layer 30 is configured to be in contact with the pixel electrode 17 to receive a signal of the pixel electrode.

Although not shown, polarizers are positioned on the upper and lower portions of the upper and lower substrates 5 and 22, respectively. The polarizing plate transmits light having a polarization component coinciding with the transmission axis. The degree of light transmission is determined by the arrangement of the transmission axes of the two polarizing plates and the arrangement characteristics of the liquid crystals. In general, the transmission axes of the two polarizing plates are arranged vertically.

FIG. 2 is a diagram illustrating refractive indexes of a polarizing plate for a liquid crystal display and a TAC film.

As shown, the conventional polarizing plate 100 for a liquid crystal display device is configured to include a polarizing film 130, the first and second TAC film (120, 140; Tri-Acetate Cellulose film). Meanwhile, the adhesive layer (not shown) is disposed below the first TAC film 120 so that the polarizer 100 may be attached to the liquid crystal display substrate (not shown).

The polarizing film 130 has a transmission axis formed in one direction, and light passing through the polarizing film 130 transmits a component parallel to the transmission axis. The first and second TAC films 120 and 140 are positioned below and above the polarizing film 130 to protect and support the polarizing film 130 from the outside.

Meanwhile, the first and second TAC films 120 and 140 are made of a polymer and have an ordinary refractive index no parallel to an extra-ordinary refractive index ne perpendicular to the film plane. ) Is smaller than the normal refractive index no, and thus has the optical characteristics of a negative C-plate in which the retardation (Δn · d = (ne-no) · d, d is the thickness of the film) is negative. First and second TAC films 120 and 140 having the same phase difference are used for the polarizing plate 100, and the phase differences of the first and second TAC films 120 and 140 are much lower than those of the general C-plate compensation film.

The polarizing plate 100 having the above configuration is used in a twisted nematic (TN) liquid crystal display having a narrow viewing angle, and the first and second TAC films 120 and 140 have a very low phase difference to compensate for the phase difference of the liquid crystal. It will not function as well. Therefore, even if the TN liquid crystal display device uses the TAC films 120 and 140 of FIG. 1, the TN liquid crystal display device does not improve the problem of narrow viewing angle.

In order to improve viewing angle characteristics of a TN liquid crystal display, a wide view (WV) polarizer is used.

3 is a cross-sectional view showing a conventional WV polarizer, and FIG. 4 is a cross-sectional view showing an arrangement state of liquid crystal molecules of a TN liquid crystal display.

As shown in FIG. 3, the WV polarizer 200 has a discotic liquid crystal layer 250 in which discotic liquid crystal molecules are arranged in a hybrid form under the first TAC film 220. The first TAC film 220 has a larger phase difference than the second TAC film 240.

As shown in FIG. 4, in a TN mode liquid crystal display device driven in a normally white mode, an electric field E perpendicular to the substrates 310 and 320 has a liquid crystal layer to realize black. The liquid crystal molecules 331 are applied to 330 and are arranged along the applied vertical electric field E.

In the TN liquid crystal display, the liquid crystal molecules 331a positioned at the center of the liquid crystal layer 330 are arranged in the direction of the applied vertical electric field E.

By the way, the liquid crystal molecules 331b and 331c positioned at the portions adjacent to the alignment layers 315 and 325 are hybridized toward the inside of the liquid crystal layer from the surfaces of the alignment layers 315 and 325 by anchoring the alignment layers 315 and 325. Arranged in the form.

Light leakage occurs in the TN liquid crystal display due to the refractive index anisotropy caused by the hybrid arrangement of the liquid crystal molecules 331b and 331c positioned adjacent to the alignment layers 315 and 325. Such light leakage is compensated for by the discotic liquid crystal layer of the polarizing plate (see 250 of FIG. 3) having an array of liquid crystal molecules symmetric with the arrangement of the liquid crystal molecules 331b and 331c positioned adjacent to the alignment layers 315 and 325.

On the other hand, a certain angle α at the normal line H on the surfaces of the alignment layers 315 and 325 by the liquid crystal molecules 331a in the center portion of the liquid crystal layer 330 having the arrangement of liquid crystal molecules perpendicular to the surfaces of the substrates 310 and 320. At an inclined viewing angle, refractive index anisotropy occurs. The liquid crystal molecules 331a in the center portion of the liquid crystal layer have optical characteristics of a positive C-plate. Therefore, the first TAC film (see 220 in FIG. 3) is designed to have the optical properties of the negative C-plate opposite to the optical properties of the liquid crystal molecules 331a to compensate for refractive anisotropy.

The WV polarizing plate having the optical characteristics as described above is configured by laminating a polarizing film (see 230 of FIG. 3) and first and second TAC films (see 220 and 240 of FIG. 3) made of a film.

The polarizing film is produced by stretching PVA (Poly Vinyl Alcohol) absorbing iodine which is a polarizer with strong tension. Thus, the polarizing film is inherently shrinking force.

5 is a view showing the shrinkage force acting on the polarizing film of the conventional WV polarizing plate, Figure 6 is a view showing a state in which the polarizing film of the conventional WV polarizing plate is contracted.

As shown in the drawing, the polarizing film 230 drawn by tension has inherent shrinkage force. The first and second TAC films (refer to 220 and 240 of FIG. 3) respectively positioned on the lower and upper portions of the polarizing film 230 support the contracting force inherent in the polarizing film 230 so that the polarizing film 230 is stretched. Stays in the state.

However, the support force of the first and second TAC films made of polymer is weakened by the heat generated when the liquid crystal display device is used in a high temperature state or for a long time, so that the first and second TAC films are reduced by the contraction force of the polarizing film 230. Is deformed.

7 and 8 are cross-sectional views showing before and after deformation of the first TAC film of the conventional WV polarizing plate, respectively. 9 and 10 are diagrams showing refractive index anisotropy before and after deformation of the first TAC film, respectively, of the conventional WV polarizing plate. In Figs. 9 and 10, circles indicate that refractive index anisotropy does not exist, and ellipses indicate that refractive index anisotropy exists.

As shown in FIG. 7, the first TAC film 220 is not deformed before shrinking of the polarizing film 230. Therefore, as shown in FIG. 9, refractive index anisotropy does not appear in the direction perpendicular to the surface of the first TAC film 220 before shrinking.

Meanwhile, as shown in FIG. 8, when the polarizing film 230 is contracted, the first TAC film 220 is contracted inside. Accordingly, as shown in FIG. 10, the refractive index anisotropy in the direction perpendicular to the surface of the first TAC film 220 after contraction is absent in the center portion, but the refractive index anisotropy is in the upper, lower, left, and right sides of the peripheral portion P, which has a lot of shrinkage force. appear. That is, the refractive index of the peripheral portion P of the first TAC film 220 does not compensate for the refractive anisotropy caused by the liquid crystal, and light leakage occurs in the liquid crystal display device.

11 is a photograph showing light leakage generated in a TN liquid crystal display using a conventional WV polarizer.

As shown, light leakage, such as an hourglass, is generated at the top, bottom, left, and right sides of the screen.

An object of the present invention for solving the problems described above, when using a WV polarizing plate, the TAC film is deformed according to the shrinkage of the polarizing film, the light leakage, such as hourglass shape in the upper, lower, left, and right sides of the LCD screen The present invention provides a polarizing plate for a liquid crystal display device and a liquid crystal display device including the same, which can improve the problem.

In order to achieve the object as described above, the present invention, a polarizing film for transmitting light parallel to the transmission axis formed in one direction; First and second TAC films positioned below and above the polarizing film to protect the polarizing film; A first liquid crystal layer having a hybrid liquid crystal array and a second liquid crystal layer having a homogeneous liquid crystal array, and including an optical compensation layer positioned below the first TAC film. A polarizing plate for a liquid crystal display device is provided.

Here, the first liquid crystal layer may be located under the second liquid crystal layer. The first and second liquid crystal layers may use discotic liquid crystal molecules, respectively. In addition, the first and second TAC films may have the same refractive index.

The display device may further include an adhesive layer positioned below the optical compensation layer, and first and second compensation layers respectively positioned below the adhesive layer and above the second TAC film. In addition, the polarizing film may be made of polyvinyl alcohol (PVA).

In another aspect, the present invention, the first and second substrates facing each other; A first liquid crystal layer filled between the first and second substrates; First and second alignment layers formed on the first substrate and the second substrate, respectively; A first polarizing film for transmitting light parallel to a transmission axis formed in one direction, first and second TAC films respectively positioned on upper and lower portions of the first polarizing film to protect the first polarizing film, and a hybrid A second liquid crystal layer having a liquid crystal array in the form of a liquid crystal and a third liquid crystal layer having a liquid crystal array in a homogeneous form, and including a first optical compensation layer positioned on the first TAC film; A first polarizing plate formed under the substrate; A second polarizing film that transmits light parallel to a transmission axis formed in one direction, third and fourth TAC films positioned below and above the second polarizing film to protect the second polarizing film, and a hybrid A second liquid crystal layer including a fourth liquid crystal layer having a liquid crystal array having a form of a liquid crystal and a fifth liquid crystal layer having a liquid crystal array having a homogeneous form, and disposed under the third TAC film; Provided is a liquid crystal display including a second polarizing plate formed on an upper substrate.

Here, the second, third, fourth, and fifth liquid crystal layers may use discotic liquid crystal molecules, respectively. In addition, the first liquid crystal layer may use nematic liquid crystal molecules.

In addition, the nematic liquid crystal molecules may be arranged in a twisted form. In addition, the second liquid crystal layer may be positioned above the third liquid crystal layer, and the fourth liquid crystal layer may be positioned below the fifth liquid crystal layer.

The present invention constitutes a discotic liquid crystal layer having optical properties of a C-plate on a polarizing plate attached to a substrate for a liquid crystal display device. Accordingly, the TAC film is deformed according to the shrinkage of the polarizing film, thereby improving refractive index anisotropy, thereby improving the generation of light leakage in the form of an hourglass.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

12 is a cross-sectional view illustrating a polarizing plate for a liquid crystal display according to an exemplary embodiment of the present invention.

As shown, the polarizing plate 400 according to the embodiment of the present invention is a polarizing film 430, and the first and second TAC films 420 and 440 respectively positioned below and above the polarizing film 430 (Tri-Acetate). Cellulose film), the discotic liquid crystal layers 450 and 460 under the first TAC film 420, the adhesive layer 470 under the discotic liquid crystal layers 450 and 460, and the adhesive layer 470. The first and second protective layers 480 and 490 are disposed on the lower portion and the second TAC film 440, respectively.

In the polarizing film 430, a transmission axis is formed in one direction, and light passing through the polarizing film 430 transmits a component parallel to the transmission axis. The polarizing film is produced by stretching PVA (Poly Vinyl Alcohol) absorbing iodine which is a polarizer with strong tension.

The first and second TAC films 420 and 440 are positioned below and above the polarizing film 430, respectively, and serve to protect and support the polarizing film 430 from the outside. The first and second TAC films 420 and 440 are made of a polymer and have refractive index anisotropy different from each other in the refractive index perpendicular to the film plane. The refractive index perpendicular to the film plane is smaller than the parallel refractive index and thus has the optical characteristics of a negative C-plate in which the phase difference Δn · d is negative. The first and second TAC films 420 and 440 have substantially the same refractive index. The phase difference of the first and second TAC films 420 and 440 is much lower than that of the general C-plate compensating film.

The first and second protective layers 480 and 490 serve to protect the polarizer 400 from the outside before the polarizer 400 is attached to the liquid crystal display substrate 500. In the process of attaching the polarizer 400 to the liquid crystal display substrate 500, the first and second protective layers 480 and 490 are removed.

The adhesive layer 470 is made of an adhesive material and is used to attach the polarizing plate 400 to the liquid crystal display substrate 500.

The discotic liquid crystal layers 450 and 460 are optical compensation layers including first and second discotic liquid crystal layers 450 and 460 having different arrangements of discotic liquid crystal molecules. The second discotic liquid crystal layer 460 is positioned under the first TAC film 420, and the first discotic liquid crystal layer 450 is positioned under the second discotic liquid crystal layer 460. Meanwhile, positions of the first and second discotic liquid crystal layers 450 and 460 may be interchanged. The discotic liquid crystal layers 450 and 460 have much less strain than the TAC films 420 and 440. The discotic liquid crystal layers 450 and 460 may use other liquid crystal molecules having the same optical characteristics as the discotic liquid crystal molecules.

The first and second discotic liquid crystal layers 450 and 460 may be manufactured in a film form and may be prepared by applying a discotic liquid crystal.

Discotic liquid crystal molecules 451 are arranged in a hybrid form in the first discotic liquid crystal layer 450. That is, the discotic liquid crystal molecules 451 positioned in the direction in which the alignment layer 510 is positioned have a long axis arranged in parallel with the surface of the alignment layer 510 of the substrate for the liquid crystal display, and toward the direction in which the polarizing film 430 is located. The discotic liquid crystal molecules 451 are arranged such that the angle between the long axis and the surface of the alignment layer 510 increases continuously. On the other hand, the arrangement of the discotic liquid crystal molecules 451 may be arranged so that the angle between the long axis and the surface of the alignment layer 510 increases as the direction in which the alignment layer 510 is positioned is increased.

Discotic liquid crystal molecules 461 in the second discotic liquid crystal layer 460 are arranged in a homogeneous form. That is, the discotic liquid crystal molecules 461 are arranged in parallel in all the alignment directions with the surface of the alignment layer 510.

FIG. 13 illustrates a twisted-nematic liquid crystal display (TN) using a polarizer according to an exemplary embodiment of the present invention. Here, for convenience of explanation, the configuration of the polarizing plate other than the adhesive layer is not shown. 14 is a view showing the alignment direction of the alignment layer and the transmission axis of the polarizing plate according to the embodiment of the present invention.

As shown, the TN liquid crystal display 600 according to an exemplary embodiment of the present invention includes a TN filled between the first and second substrates 610 and 620 facing each other and the first and second substrates 610 and 620. The liquid crystal layer 630 includes a liquid crystal layer 630, a first polarizing plate 400a positioned under the first substrate 610, and a second polarizing plate 400b positioned above the second substrate 620.

The thin film transistor T and the pixel electrode 640 connected to the thin film transistor T are formed on the first substrate 610, which is a lower substrate, and the first alignment layer 660 is formed on the pixel electrode 640. Formed. The thin film transistor T is driven in connection with a gate line (not shown) that transmits a scanning signal and a data line (not shown) that transmits an image signal. The thin film transistor T driven on / off by the scan signal transfers an image signal to the pixel electrode 640. The pixel electrode 640 is made of a transparent conductive metal material including indium-tin-oxide (ITO) and indium-zinc-oxide (IZO).

The common electrode 650 is formed under the second substrate 620, which is an upper substrate, and the second alignment layer 670 is formed under the common electrode. Although not shown, a color filter layer for displaying red, green, and blue colors may be formed between the second substrate 620 and the common electrode 650 to display colors. .

According to the electric field generated by the voltage difference between the pixel electrode 640 and the common electrode 650, the nematic liquid crystal molecules 631 are driven to display an image.

In the TN liquid crystal layer 630, nematic liquid crystal molecules 631 are arranged in a twisted form in an initial state, that is, in a state where an electric field is not applied. Since the first and second alignment layers 660 and 670 have an alignment direction perpendicular to each other, the nematic liquid crystal molecules 631 have a long axis of the first alignment layer 660 as the first alignment layer 660 moves from the first alignment layer 660 to the second alignment layer 670. In the alignment direction, the alignment direction of the second alignment layer 670 may be continuously rotated in parallel with the surfaces of the alignment layers 660 and 670.

The first polarizer 400a is attached to the lower portion of the first substrate 610 by the first adhesive layer 470a, and the second polarizer 400b is disposed on the second substrate 620 by the second adhesive layer 470b. Is attached to.

The first and second polarizers 400a and 400b have transmission axes perpendicular to each other, and the transmission axes of the first and second polarizers 400a and 400b are positioned in the same direction as the alignment direction of the first and second alignment layers 660 and 670, respectively. do. Therefore, when the electric field is not applied to the TN liquid crystal layer 630, it operates in a normally white mode displaying a white image.

15 is a cross-sectional view illustrating a TN liquid crystal display device implementing black according to an embodiment of the present invention. Here, for convenience of description, the polarizing plate only shows the discotic liquid crystal layer of the configuration, and only the alignment film on the substrate.

In the TN mode liquid crystal display, an electric field E perpendicular to the substrates 610 and 620 is applied to the TN liquid crystal layer 630 in order to realize black, and nematic liquid crystal molecules along the applied vertical electric field E. 631 is arranged.

The nematic liquid crystal molecules 631a positioned at the center of the TN liquid crystal layer 630 are arranged in the direction of the vertical electric field (E) perpendicular to the surfaces of the alignment layers 660 and 670, so that the optical characteristics of the positive C-plates. Will have

In the second discotic liquid crystal layers 460a and 460b of the first and second polarizers 400a and 400b, the discotic liquid crystal molecules 461a and 461b are arranged in a direction horizontal to the surfaces of the alignment layers 660 and 670, so that the negative C-plates are disposed. It has an optical characteristic of.

Therefore, the refractive index anisotropy is compensated for at a viewing angle inclined at an angle α at a normal line H perpendicular to the surfaces of the substrates 610 and 620.

Meanwhile, nematic liquid crystal molecules 631b and 631c positioned at portions adjacent to each of the first and second alignment layers 660 and 670 are anchored with the alignment layers 660 and 670 to form TN on the surfaces of the alignment layers 660 and 670. It is arranged in a hybrid (hybrid) toward the center portion of the liquid crystal layer 630.

In the first discotic liquid crystal layer 450a of the first polarizing plate 400a, the discotic liquid crystal molecules 451a are hybrid forms that are symmetric with a hybrid arrangement of nematic liquid crystal molecules 631b positioned adjacent to the first alignment layer 660. Is arranged.

In the first discotic liquid crystal layer 450b of the second polarizing plate 400b, the discotic liquid crystal molecules 451b are hybrid forms that are symmetric with a hybrid arrangement of nematic liquid crystal molecules 631c positioned adjacent to the second alignment layer 670. Is arranged.

Therefore, the refractive index anisotropy generated by the liquid crystal molecules 631b and 631c positioned in the portions adjacent to the first and second alignment layers 660 and 670, respectively, is the first discotic liquid crystal of the first and second polarizing plates having the symmetric liquid crystal molecular array. Compensated by layers 450a and 450b.

The present invention constitutes a discotic liquid crystal layer having optical properties of a C-plate on a polarizing plate attached to a substrate for a liquid crystal display device. Accordingly, the TAC film is deformed according to the shrinkage of the polarizing film, thereby improving refractive index anisotropy, thereby improving the generation of light leakage in the form of an hourglass.

Embodiment of the present invention as described above is an example of the present invention, various modifications are possible. It is apparent to those skilled in the art that such modifications fall within the scope of the present invention, within the scope included in the spirit of the present invention. The scope of the present invention will be embodied through the claims.

The present invention constitutes a discotic liquid crystal layer having optical properties of a C-plate on a polarizing plate attached to a substrate for a liquid crystal display device. Therefore, the TAC film is deformed according to the shrinkage of the polarizing film, so that refractive index anisotropy occurs, thereby improving the generation of light leakage in the form of an hourglass.

1 is a view showing a general liquid crystal display device.

2 is a view illustrating refractive indexes of a polarizing plate and a TAC film for a conventional liquid crystal display.

3 is a cross-sectional view showing a conventional WV polarizing plate.

4 is a cross-sectional view showing an arrangement state of liquid crystal molecules of a TN liquid crystal display device;

5 is a view showing the shrinkage force acting on the polarizing film of the conventional WV polarizing plate.

Figure 6 is a view showing a state in which the polarizing film of the conventional WV polarizing plate contracted.

7 and 8 are cross-sectional views showing before and after deformation of the first TAC film of the conventional WV polarizing plate, respectively.

9 and 10 respectively show refractive anisotropy before and after deformation of a first TAC film of a conventional WV polarizing plate, respectively.

11 is light leakage generated in a TN liquid crystal display using a conventional WV polarizer.

12 is a cross-sectional view showing a polarizing plate for a liquid crystal display device according to an embodiment of the present invention.

FIG. 13 illustrates a TN liquid crystal display using a polarizing plate according to an embodiment of the present invention. FIG.

14 is a view showing the alignment direction of the alignment layer and the transmission axis of the polarizing plate according to the embodiment of the present invention.

15 is a cross-sectional view showing a TN liquid crystal display device implementing black according to an embodiment of the present invention.

<Brief description of the main parts of the drawing>

400: polarizing plate 420: first TAC film

430 polarizing film 440 second TAC film

450: first discotic liquid crystal layer 460: second discotic liquid crystal layer

470: adhesive layer 480: first protective layer

490: second protective layer

Claims (11)

A polarizing film transmitting light parallel to a transmission axis formed in one direction; First and second TAC films positioned below and above the polarizing film to protect the polarizing film; An optical compensation layer including a first liquid crystal layer having a hybrid liquid crystal array and a second liquid crystal layer having a homogeneous liquid crystal array and positioned below the first TAC film. Polarizing plate for a liquid crystal display device comprising a. The method of claim 1, The first liquid crystal layer is a polarizing plate for a liquid crystal display device positioned below the second liquid crystal layer. The method of claim 1, And the first and second liquid crystal layers each use discotic liquid crystal molecules. The method of claim 1, The first and second TAC films are polarizing plates for liquid crystal display devices having the same refractive index. The method of claim 1, And a first adhesive layer disposed under the optical compensation layer, and first and second compensation layers respectively disposed under the adhesive layer and above the second TAC film. The method of claim 1, The polarizing film is a polarizing plate for a liquid crystal display device made of PVA (poly vinyl alcohol). First and second substrates facing each other; A first liquid crystal layer filled between the first and second substrates; First and second alignment layers formed on the first substrate and the second substrate, respectively; A first polarizing film for transmitting light parallel to a transmission axis formed in one direction, first and second TAC films respectively positioned on upper and lower portions of the first polarizing film to protect the first polarizing film, and a hybrid A second liquid crystal layer having a liquid crystal array in the form of a liquid crystal and a third liquid crystal layer having a liquid crystal array in a homogeneous form, and including a first optical compensation layer positioned on the first TAC film; A first polarizing plate formed under the substrate; A second polarizing film that transmits light parallel to a transmission axis formed in one direction, third and fourth TAC films positioned below and above the second polarizing film to protect the second polarizing film, and a hybrid A second liquid crystal layer including a fourth liquid crystal layer having a liquid crystal array having a form of a liquid crystal and a fifth liquid crystal layer having a liquid crystal array having a homogeneous form, and disposed under the third TAC film; Second polarizer formed on the substrate Liquid crystal display comprising a. The method of claim 7, wherein And the second, third, fourth and fifth liquid crystal layers each use discotic liquid crystal molecules. The method of claim 7, wherein And the first liquid crystal layer uses nematic liquid crystal molecules. The method of claim 9, The nematic liquid crystal molecules are arranged in a twist (twist) form. The method of claim 7, wherein And the second liquid crystal layer is positioned above the third liquid crystal layer, and the fourth liquid crystal layer is positioned below the fifth liquid crystal layer.