KR20120007391A - In-cell polarizing plate manufacturing method and liquid crystal display panel manufacturing method using the same - Google Patents

Abstract

In-cell polarizer manufacturing method of the present invention and a liquid crystal display panel manufacturing method using the same is first coated with a uniaxial host material on the substrate and then a guest material that absorbs visible light thereon Forming a polarizing plate inside the substrate by dyeing to improve processability while forming a uniform coating surface to improve the degree of polarization, the method comprising: forming an alignment layer on the substrate; Rubbing the alignment layer to orient the alignment layer; Coating a uniaxial host material on the oriented alignment film; Curing the host material to form a host film; And dyeing a dichroic dye on the host film to form a polarizing plate.

Description

In-cell polarizer manufacturing method and liquid crystal display panel manufacturing method using the same {METHOD OF FABRICATING IN-CELL POLARIZER AND METHOD OF FABRICATING LIQUID CRYSTAL DISPLAY PANEL USING THE SAME}

The present invention relates to a method for manufacturing an in-cell polarizing plate and a method for manufacturing a liquid crystal display panel using the same, and more particularly, to a method for manufacturing an in-cell polarizing plate having a polarizing plate formed therein and a method for manufacturing a liquid crystal display panel using the same.

Recently, with increasing interest in information display and increasing demand for using a portable information carrier, a lightweight flat panel display (FPD), which replaces a conventional display device, a cathode ray tube (CRT), is used. The research and commercialization of Korea is focused on. In particular, the liquid crystal display (LCD) of the flat panel display device is an image representing the image using the optical anisotropy of the liquid crystal, is excellent in resolution, color display and image quality, and is actively applied to notebooks or desktop monitors have.

In general, a liquid crystal display device is a display device in which a data signal according to image information is individually supplied to liquid crystal cells arranged in a matrix form so as to display a desired image by adjusting light transmittance of the liquid crystal cells. .

1 is an exploded perspective view schematically illustrating a structure of a general liquid crystal display panel.

2 is a cross-sectional view schematically illustrating a general liquid crystal display panel, and illustrates a general liquid crystal display panel in which a polarizing plate is attached to the outside of the substrate.

As shown in the figure, the liquid crystal display panel is largely a color filter substrate 5, which is a first substrate, an array substrate 10, which is a second substrate, and the color filter substrate 5, and an array substrate. It consists of a liquid crystal layer 30 formed between (10).

The color filter substrate 5 is formed between a color filter composed of red (R), green (G), and blue (B) subcolor filters (7) and the subcolor filter (7). And a black matrix 6 for blocking light passing through the liquid crystal layer 30 and a transparent common electrode 8 for applying a voltage to the liquid crystal layer 30.

The array substrate 10 has gate lines 16 and data lines 17 arranged vertically and horizontally to define the pixel region P. FIG. In this case, a thin film transistor (TFT) T, which is a switching element, is formed in an intersection region of the gate line 16 and the data line 17, and each pixel region P includes a pixel electrode 18. ) Is formed.

The thin film transistor includes a gate electrode 21 connected to the gate line 16, a source electrode 22 connected to the data line 17, and a drain electrode 23 electrically connected to the pixel electrode 18. It consists of. In addition, the thin film transistor includes an active layer 24 and the source forming a conductive channel between the source electrode 22 and the drain electrode 23 by a gate voltage supplied to the gate electrode 21. An ohmic contact layer 25n for ohmic contact between the / drain electrodes 22 and 23 and the source / drain regions of the active layer 24.

For reference, reference numerals 15a and 15b denote gate insulating films and protective films.

The color filter substrate 5 and the array substrate 10 configured as described above are provided with alignment layers 9 and 19 for aligning the liquid crystal molecules of the liquid crystal layer 30, and the color filter substrate 5 ) And polarizers 1 and 11 for polarizing light are attached to the outside of the array substrate 10. In this case, the general liquid crystal display panel needs an additional process since the mother substrate is cut into a unit liquid crystal display panel and each polarizing plate is separately attached.

3 is a cross-sectional view schematically illustrating a structure of a general polarizing plate.

As shown in the figure, a general polarizing plate has a tri-acetyl cellulose (TAC) 23a, 23b attached to the top and the bottom of a polyvynyl alcohol (PVA) 24, and a protective film thereon, respectively. 25, the pressure-sensitive adhesive 22 and the release agent 21 is attached.

At this time, the polarization function can be obtained by dyeing the polarizing film 24 with iodine, dye, or the like and then imparting polarization characteristics by stretching or the like. The function of the triacetyl cellulose (23a, 23b) serves as a support for mechanically supporting the polarizing film 24 having a polarizing function. The adhesive 22 serves as a layer having an adhesive function to adhere the polarizing plate to the color filter substrate and the array substrate.

As described above, the polarizing function is imparted by performing the stretching process when forming the polarizing film, but the stretching direction should ideally align the iodine molecules or dyes in one direction during the stretching process. Misalignment may occur within a certain angle in the stretching direction. In addition, conventional PVA polarizers are more expensive than in-cell polarizers that form a polarizer in the substrate, and are additionally attached to the outside of the substrate, thereby preventing the slimming of the liquid crystal display panel.

The present invention is to solve the above problems, by forming a host-guest type polarizing plate inside the substrate to prevent the alignment abnormality occurring during the stretching process, and to make the liquid crystal display panel slim. An object of the present invention is to provide a manufacturing method of an in-cell polarizer and a manufacturing method of a liquid crystal display panel using the same.

Another object of the present invention is to provide a method for manufacturing an in-cell polarizing plate and a method for manufacturing a liquid crystal display panel using the same to present a method for inselling a polarizing material for fabricating an in-cell polarizing plate.

Further objects and features of the present invention will be described in the configuration and claims of the invention which will be described later.

In order to achieve the above object, the in-cell polarizing plate manufacturing method of the present invention comprises the steps of forming an alignment film on a substrate; Rubbing the alignment layer to orient the alignment layer; Coating a uniaxial host material on the oriented alignment film; Curing the host material to form a host film; And dyeing a dichroic dye on the host film to form a polarizing plate.

According to an aspect of the present invention, there is provided a method of manufacturing a liquid crystal display panel, the method comprising: providing first and second mother substrates divided into a plurality of panel regions; Performing a color filter process on the first mother substrate for the color filter substrate, and performing an array process on the second mother substrate for the array substrate; Forming alignment layers on surfaces of the first and second mother substrates, respectively; Rubbing the first and second mother substrates on which the alignment layers are formed to orient each alignment layer; Coating a uniaxial host material on the oriented alignment film; Curing the host material to form a host film; Dyeing a dichroic dye on the host film to form a polarizing plate; Bonding the first and second mother substrates on which the polarizers are formed; And separating the bonded first and second mother substrates into a plurality of unit liquid crystal display panels.

In this case, the liquid crystal is dropped on one of the first and second mother substrates on which the polarizing plate is formed, and a seal pattern is formed on the other mother substrate.

The host material is characterized in that the dichroic dye is uniaxially aligned while promoting the filming through a polymer reaction.

The polarizing plate is formed by immersing the substrate on which the host film is formed in a bath in which the dichroic dye is dissolved, and dyeing the dichroic dye on the host film.

The dichroic dye is characterized in that it comprises an acrylic-based light curable material or an epoxy-based heat curable material uniaxially aligned by the host material.

The dyeing is characterized in that for 1 second to 10 minutes at a temperature of 10 ℃ ~ 80 ℃.

The dichroic dye and a substance that helps adsorption such as Na ₂ SO ₄ is dissolved in the water tank.

As described above, the in-cell polarizing plate manufacturing method according to the present invention and the manufacturing method of the liquid crystal display panel using the same by using a host-guest type in-cell polarizing plate to prevent anomalous alignment of iodine molecules or dyes generated during the stretching process. It can be effective. In addition, such an in-cell polarizer of the host-guest type is cheaper than conventional PVA polarizers and provides an effect of slimming the liquid crystal display panel.

The in-cell polarizing plate manufacturing method and the liquid crystal display panel manufacturing method using the same according to the present invention improves the coating (coating) and precipitate-related processability, while providing an effect of improving the polarization degree of the polarizing plate by forming a uniform coating surface.

1 is an exploded perspective view schematically illustrating a structure of a general liquid crystal display panel.
2 is a cross-sectional view schematically illustrating a general liquid crystal display panel.
3 is a cross-sectional view schematically showing the structure of a general polarizing plate.
4 is a cross-sectional view schematically illustrating a liquid crystal display panel according to an exemplary embodiment of the present invention.
FIG. 5 is a diagram schematically showing a method of manufacturing a host-guest type in-cell polarizer sample. FIG.
6 is an exemplary view schematically showing photopolymerization of aligned liquid crystal diacrylate (LC-diacrylate) to which a dichroic dye is added.
7A to 7D are perspective views sequentially illustrating a method of manufacturing an in-cell polarizer according to an embodiment of the present invention.
8A to 8F are perspective views sequentially illustrating a method of manufacturing an in-cell polarizer according to another embodiment of the present invention.
9 is a flowchart sequentially illustrating a method of manufacturing a liquid crystal display panel according to an exemplary embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the in-cell polarizing plate manufacturing method and a method for manufacturing a liquid crystal display panel using the same according to the present invention.

4 is a cross-sectional view schematically illustrating a liquid crystal display panel according to an exemplary embodiment of the present invention, and illustrates a liquid crystal display panel in which a polarizing plate is formed inside a substrate.

As shown in the figure, the liquid crystal display panel according to the embodiment of the present invention is largely the liquid crystal layer formed between the color filter substrate 105 and the array substrate 110 and the color filter substrate 105 and the array substrate 110 It consists of 130.

The color filter substrate 105 distinguishes between a color filter composed of red, green, and blue sub color filters 107 and the sub color filter 107, and blocks light transmitted through the liquid crystal layer 130. The black matrix 106 and the transparent common electrode 108 applying a voltage to the liquid crystal layer 130 are formed.

In this case, a twisted nematic (TN) type liquid crystal display panel in which the common electrode 108 is formed on the color filter substrate 105 is illustrated as an example, but the present invention is not limited thereto. The common electrode may be applied to a liquid crystal display panel of an in-plane switching (IPS) type in which a common electrode is formed on a lower array substrate together with a pixel electrode. In this case, an overcoat layer may be formed on the color filter substrate on which the color filter and the black matrix are formed.

The array substrate 110 has gate lines (not shown) and data lines (not shown) arranged vertically and horizontally to define pixel regions. In this case, a thin film transistor which is a switching element is formed in an intersection region of the gate line and the data line, and a pixel electrode 118 is formed in each pixel region.

The pixel region is a sub pixel corresponding to one sub color filter 107 of the color filter substrate 105. The color image is a combination of the three kinds of sub color filters 107 of red, green, and blue. It is obtained by. That is, three sub-pixels of red, green, and blue are gathered to form one pixel, and the thin film transistor is connected to the red, green, and blue sub-pixels, respectively.

The thin film transistor includes a gate electrode 121 connected to the gate line, a source electrode 122 connected to the data line, and a drain electrode 123 electrically connected to the pixel electrode 118. In addition, the thin film transistor includes an active layer 124 and a source / drain electrode forming a conductive channel between the source electrode 122 and the drain electrode 123 by a gate voltage supplied to the gate electrode 121. 122 and 123 and an ohmic contact layer 125n for ohmic contact between the source / drain regions of the active layer 124.

For reference, reference numerals 115a and 115b denote gate insulating films and protective films.

The color filter substrate 105 and the array substrate 110 configured as described above are provided with alignment layers 109 and 119 for orienting liquid crystal molecules of the liquid crystal layer 130. Light is disposed on the alignment layers 109 and 119. Polarizing plates 101 and 111 for polarizing are formed in an in-cell form.

At this time, in the present invention, by applying the in-cell polarizers 101 and 111 of the host-guest type, it is possible to fundamentally prevent the misalignment of iodine molecules or dyes generated during the stretching process. In addition, such host-guest type in-cell polarizers 101 and 111 are inexpensive than conventional PVA polarizers and have a feature of slimming the liquid crystal display panel.

FIG. 5 is a diagram schematically illustrating a method of manufacturing a host-guest type in-cell polarizer sample. FIG.

6 is an exemplary view schematically showing photopolymerization of aligned liquid crystal diacrylate (LC-diacrylate) to which a dichroic dye is added.

Referring to FIG. 5, an in-cell polarizer sample may be prepared by mixing a dichroic dye as a guest material with a reactive mesogen as a host material.

It consists of a host material that uniaxially aligns the dichroic dye for polarization and a guest material that uniaxially absorbs visible light, which uniaxially aligns the dichroic dye to the film through a polymer reaction. Promotes filming

In addition, the guest material is uniaxially aligned by the host, thereby absorbing visible light in the aligned direction and transmitting the visible light in the vertical direction, thereby serving as a polarizer.

As shown in FIG. 6, the in-cell polarizing plate sample is coated on a substrate and then cured using light, thereby obtaining a uniaxially aligned polarizing plate through a photopolymerization reaction.

Hereinafter, a method of manufacturing the host-guest type in-cell polarizer will be described in detail with reference to the accompanying drawings.

7A to 7D are perspective views sequentially illustrating a method of manufacturing an in-cell polarizer according to an embodiment of the present invention.

As shown in FIG. 7A, a predetermined substrate 100 such as an array substrate or a color filter substrate is prepared.

In this case, when the substrate 100 is an array substrate, a thin film transistor and a pixel electrode may be formed on the substrate 100. When the substrate 100 is a color filter substrate, the substrate 100 may be formed on the substrate 100. Color filters, black matrices, and common electrodes may be formed.

The substrate 100 may be made of a transparent insulating material such as glass, or may be made of a flexible substrate such as plastic.

Thereafter, a predetermined alignment layer 140 is formed on the substrate 100.

In this case, the material of the alignment layer 140 may be classified into an inorganic alignment layer, which is an inorganic substance, an organic alignment layer, which is an organic substance, and both.

The inorganic alignment film is formed by SiO evaporation deposition, and SiO evaporation is deposition of an inorganic material such as a metal, an oxide, or a fluoride with respect to a substrate, and SiO is generally used as a deposition material.

The alignment control technology of the organic alignment layer may use a polyimide-based material as an orientation control technology using organic molecules suitable for application to a production line with little change in characteristics due to liquid crystal materials.

Next, as shown in FIG. 7B, to provide the alignment control force or the surface fixing force (ie, the pretilt angel and the orientation direction) to the liquid crystal molecules of the liquid crystal layer on the substrate 100 on which the alignment layer 140 is formed. Proceed with rubbing.

In this case, a rubbing or optical alignment method using a roller may be applied as the rubbing.

Subsequently, as shown in FIG. 7C, an in-cell polarizer plate manufactured by the method illustrated in FIG. 5 is coated on the oriented alignment layer 140 to form a predetermined in-cell polarizer thin film 150.

As described above, the in-cell polarizer sample may be prepared by mixing a dichroic dye as a guest material with a reactive liquid crystal as a host material.

Next, as shown in FIG. 7D, when the in-cell polarizer sample coated on the substrate 100 is cured using light such as ultraviolet (UV) light, the polarizing plates 155 uniaxially aligned through a photopolymerization reaction. ) Can be obtained.

The UV exposure causes photopolymerization to form a stable polymer network.

The in-guest polarizer of the host-guest type manufactured as described above has a compatibility problem between the host and the guest material, resulting in a decrease in the degree of fairness such as a decrease in coating property and generation of sediment or a decrease in polarization degree due to uneven coating surface formation. It may be.

Accordingly, in another embodiment of the present invention, a heterogeneous affinity problem does not occur by forming an in-cell polarizing plate by coating a uniaxial host material on a substrate and then dyeing a guest material absorbing visible light thereon. The in-cell polarizer manufacturing method according to the present invention will be described in detail with reference to the drawings.

8A to 8F are perspective views sequentially illustrating a method of manufacturing an in-cell polarizer according to another embodiment of the present invention.

As shown in FIG. 8A, a predetermined substrate 200 such as an array substrate or a color filter substrate is prepared.

In this case, when the substrate 200 is an array substrate, a thin film transistor and a pixel electrode may be formed on the substrate 200. When the substrate 200 is a color filter substrate, the substrate 200 may be formed on the substrate 200. Color filters, black matrices, and common electrodes may be formed.

In addition, the substrate 200 may be made of a transparent insulating material such as glass, or may be made of a flexible substrate such as plastic.

Thereafter, a predetermined alignment layer 240 is formed on the substrate 200.

In this case, the material of the alignment layer 240 may be classified into an inorganic alignment layer that is an inorganic material, an organic alignment film that is an organic material, and both.

Next, as shown in FIG. 8B, rubbing is performed on the substrate 200 on which the alignment layer 240 is formed to provide alignment control force or surface fixing force to the liquid crystal molecules of the liquid crystal layer.

In this case, a rubbing or optical alignment method using a roller may be applied as the rubbing.

Subsequently, as illustrated in FIG. 8C, a uniaxial host material is coated on the oriented alignment layer 240 to form a predetermined coating layer 250a.

In this case, the host material uniaxially aligns the dichroic dye for polarization and promotes film formation through a polymer reaction. As shown in FIG. 8D, the substrate 200 When the coating film is cured using light such as ultraviolet rays, the host material promotes film formation through a photopolymerization reaction to form a host film 255a.

The UV exposure causes photopolymerization to form a stable polymer network.

Next, as illustrated in FIGS. 8E and 8F, the substrate 200 in which the host film 255a is formed is immersed in the bath 260 in which the dichroic dye 250b is dissolved. The dichroic dye 250b is dyed to form a predetermined polarizing plate 255.

At this time, the dichroic dye 250b as the guest material is uniaxially aligned by the host to absorb the visible light in the aligned direction and transmit the visible light in the vertical direction to act as a polarizer. In addition, the guest material may include an acryl-based light curable material or an epoxy-based heat curable material.

In addition, the dyeing method is a substrate 200 in which the host film 255a is formed in a state in which a material that assists adsorption such as dichroic dye 250b and Na ₂ SO ₄ is dissolved at a temperature of about 10 ° C. to 80 ° C. ) Can be soaked for 1 second to 10 minutes.

Hereinafter, a manufacturing method of the liquid crystal display panel using the in-cell polarizing plate manufacturing method illustrated in FIGS. 8A to 8F will be described in detail.

9 is a flowchart sequentially illustrating a method of manufacturing a liquid crystal display panel according to an exemplary embodiment of the present invention.

In this case, the general liquid crystal display panel requires an additional process as the polarizers are separately attached after cutting the mother substrate into a unit liquid crystal display panel. However, in the exemplary embodiment of the present invention, a color filter substrate or an array substrate of the mother substrate is required. Since the polarizing plate is formed in the in-cell form therein, the aforementioned additional process is not necessary.

The manufacturing process of the liquid crystal display panel largely comprises a driving element array process for forming a driving element on an array substrate, a color filter process for forming a color filter on a color filter substrate, and a unit liquid crystal display panel manufactured by combining the array substrate and the color filter substrate. It can be divided into a module process.

First, a plurality of gate lines and data lines are formed on the array substrate vertically and horizontally by an array process to define pixel regions, and thin film transistors, which are driving elements connected to the gate lines and data lines, are formed in each of the pixel regions. (S101). In addition, the pixel electrode is connected to the thin film transistor through the array process to drive the liquid crystal layer as a signal is applied through the thin film transistor.

In addition, a color filter, a black matrix, and a common electrode including red, green, and blue sub-color filters that implement color by a color filter process are formed on the color filter substrate (S105).

In this case, the color filter substrate and the array substrate are composed of a large area mother substrate. In other words, a plurality of panel regions are formed in a large area of the mother substrate, and thin film transistors, color filters, black matrices, and the like, which are driving elements, are formed in the panel regions, respectively.

Subsequently, after the alignment layers are formed in predetermined regions of the mother substrate constituting the color filter substrate and the array substrate, the alignment control force or the surface fixing force (ie, free) is applied to the liquid crystal molecules of the liquid crystal layer formed between the color filter substrate and the array substrate. The alignment layer is oriented to provide a tilt angle and an orientation direction (S102 and S106).

In this case, a method of rubbing or photoalignment using a roller may be applied as the alignment treatment method. In addition, the mother substrate after the rubbing process is inspected whether the alignment layer is defective through the alignment layer inspector.

Next, as described above, after coating a uniaxial host material on the oriented alignment film to form a predetermined coating film, the coating film is cured using light such as ultraviolet rays to form a host film.

Subsequently, the mother substrate in which the host film is formed is immersed in a bath in which the dichroic dye is dissolved to form a predetermined polarizing plate by dyeing the dichroic dye on the host film (S103, S107).

In this case, the guest material may include an acrylic light curable material or an epoxy heat curable material.

In addition, the dyeing method is a mother substrate formed with the host film in a state in which a dichroic dye and a substance that assists adsorption such as Na ₂ SO ₄ is dissolved at a temperature of about 10 ° C. to about 80 ° C. for about 1 second to about 10 minutes. Soak can proceed.

Subsequently, in the case of forming a liquid crystal layer using a vacuum injection method, a spacer for maintaining a constant cell gap is formed on the array substrate, and a sealing material is coated on an outer portion of the color filter substrate. The substrate is applied by applying pressure to the substrate. In this case, the spacer may be a ball spacer by a scattering method, or may be a column spacer by patterning.

As described above, a plurality of panel regions are disposed in the large-area mother substrate, and thin film transistors, color filters, black matrices, and the like, which are driving elements, are formed in each of the panel regions. The mother substrate must be cut and processed.

Then, the liquid crystal is injected into the liquid crystal display panel processed as described above through the liquid crystal inlet, the liquid crystal inlet is encapsulated to form a liquid crystal layer, and then the liquid crystal display panel is manufactured by inspecting each liquid crystal display panel. do.

As described above, the injection of the liquid crystal uses a vacuum injection method using a pressure difference. The vacuum injection method uses a liquid crystal inlet in a chamber in which a liquid crystal is filled in a liquid crystal injection hole of a unit liquid crystal display panel separated from a large area mother substrate. The liquid crystal is filled into the liquid crystal display panel by injecting the liquid crystal into the liquid crystal display panel by the pressure difference between the inside and the outside of the liquid crystal display panel by dipping the liquid into a liquid. The liquid crystal layer of the liquid crystal display panel is formed. Therefore, when the liquid crystal layer is formed in the liquid crystal display panel through a vacuum injection method, a part of the seal pattern must be opened to have a function of the liquid crystal injection hole.

Here, the vacuum injection method as described above takes a very long time to fill the liquid crystal in the liquid crystal display panel, and since the consumption of liquid crystal is high, the dropping method may be applied instead of the vacuum injection method. .

That is, in the case of using the dropping method, after forming an in-cell polarizing plate, a predetermined seal pattern is formed on the first mother substrate made of the color filter substrate with a sealant, and the second mother substrate made of the array substrate is formed. Liquid crystal is dripped (S104, S108).

The dropping method uses a dispenser to drop and distribute liquid crystals in an image display area of a first mother substrate having a large area in which a plurality of color filter substrates are arranged or a second mother substrate in which a plurality of array substrates are disposed ( dispensing), and the liquid crystal layer is formed by uniformly distributing the liquid crystals to the entire image display region by the pressure for bonding the first and second mother substrates (S109).

Therefore, when the liquid crystal layer is formed on the liquid crystal display panel by dropping, the seal pattern should be formed in a closed pattern surrounding the pixel area region to prevent the liquid crystal from leaking out of the image display region.

The dropping method can drop the liquid crystal in a short time compared to the vacuum injection method, and can form the liquid crystal layer very quickly even when the liquid crystal display panel is enlarged.

In addition, since only the required amount of liquid crystal is dropped on the substrate, the price competitiveness of the liquid crystal display panel due to the disposal of the expensive liquid crystal is prevented, such as a vacuum injection method, thereby enhancing the price competitiveness of the product.

Through this process, a plurality of liquid crystal display panels having a liquid crystal layer are formed on the first and second mother substrates having a large area. The first and second mother substrates are processed and cut and separated into a plurality of liquid crystal display panels. By inspecting each liquid crystal display panel, a liquid crystal display panel is produced (S110 and S111).

Many details are set forth in the foregoing description but should be construed as illustrative of preferred embodiments rather than to limit the scope of the invention. Therefore, the invention should not be defined by the described embodiments, but should be defined by the claims and their equivalents.

100,200: substrate 140,240: alignment layer
150: in-cell polarizer thin film 155,255: polarizer
250a: coating film 250b: dichroic dye
255a: host film 260: water tank

Claims (15)

Forming an alignment layer on the substrate;
Rubbing the alignment layer to orient the alignment layer;
Coating a uniaxial host material on the oriented alignment film;
Curing the host material to form a host film; And
Forming a polarizing plate by dyeing a dichroic dye on the host film, the in-cell polarizing plate manufacturing method. The method of claim 1, wherein the substrate is an array substrate on which a thin film transistor and a pixel electrode are formed. The method of claim 1, wherein the substrate is a color filter substrate on which a color filter and a black matrix are formed. The method of claim 1, wherein the host material uniaxially aligns the dichroic dye, and promotes film formation through a polymer reaction. The method of claim 1, wherein the polarizing plate is formed by immersing the substrate on which the host film is formed in a bath in which the dichroic dye is dissolved to dye the dichroic dye on the host film. The method of claim 1, wherein the dichroic dye comprises an acrylic light curable material or an epoxy heat curable material that is uniaxially aligned by the host material. The method of claim 1, wherein the dyeing is performed at a temperature of 10 ° C. to 80 ° C. for 1 second to 10 minutes. The method of claim 1, wherein the dichroic dye and a substance that helps adsorption such as Na ₂ SO ₄ is dissolved in the water tank. Providing first and second mother substrates divided into a plurality of panel regions;
Performing a color filter process on the first mother substrate for the color filter substrate, and performing an array process on the second mother substrate for the array substrate;
Forming alignment layers on surfaces of the first and second mother substrates, respectively;
Rubbing the first and second mother substrates on which the alignment layers are formed to orient each alignment layer;
Coating a uniaxial host material on the oriented alignment film;
Curing the host material to form a host film;
Dyeing a dichroic dye on the host film to form a polarizing plate;
Bonding the first and second mother substrates on which the polarizers are formed; And
And dividing the bonded first and second mother substrates into a plurality of unit liquid crystal display panels. The method of manufacturing a liquid crystal display panel according to claim 9, wherein a liquid crystal is dropped on one of the first and second mother substrates on which the polarizer is formed, and a seal pattern is formed on the other mother substrate. . The method of claim 9, wherein the host material uniaxially aligns the dichroic dye and promotes film formation through a polymer reaction. The method of claim 9, wherein the polarizing plate is formed by immersing the substrate on which the host film is formed in a bath in which the dichroic dye is dissolved to dye the dichroic dye on the host film. The method of claim 9, wherein the dichroic dye comprises an acrylic light curable material or an epoxy heat curable material that is uniaxially aligned by the host material. The method of claim 9, wherein the dyeing is performed at a temperature of 10 ° C. to 80 ° C. for 1 second to 10 minutes. The method of manufacturing a liquid crystal display panel according to claim 9, wherein a substance which assists adsorption such as the dichroic dye and Na ₂ SO ₄ is dissolved in the water tank.

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