KR101494738B1 - Liquid crystal display panel and method of manufacturing the same - Google Patents

Abstract

A liquid crystal display panel improved in productivity and display quality and a method of manufacturing the same are disclosed. A liquid crystal display panel includes a display substrate including pixel electrodes formed in a plurality of pixel regions, a counter substrate facing the display substrate, and a liquid crystal layer including liquid crystal molecules interposed between the display substrate and the counter substrate, One of the counter substrates includes a first alignment layer and a first alignment layer including a second alignment portion surrounding the first alignment portion. This makes it possible to divide the liquid crystal layer into multi domains without patterning the pixel electrodes, thereby ensuring a wide viewing angle, thereby improving the display quality and improving the productivity by simplifying the process.

Patternless, wide viewing angle, multi-domain, dot, vertical orientation, horizontal orientation

Description

TECHNICAL FIELD [0001] The present invention relates to a liquid crystal display panel and a method of manufacturing the same,

The present invention relates to a liquid crystal display panel and a method of manufacturing the same, and more particularly, to a liquid crystal display panel in a vertical alignment mode and a method of manufacturing the same.

In general, a liquid crystal display panel includes a display substrate on which switching elements for driving respective pixel regions are formed, a counter substrate facing the array substrate, and a liquid crystal layer interposed between the array substrate and the counter substrate. The liquid crystal display panel displays an image by applying a voltage to the liquid crystal layer to control the transmittance of light.

The step of fabricating the display substrate includes forming a signal line for applying a signal on a base substrate, a thin film transistor (TFT) as a switching element connected to the signal line, and forming the signal line and the thin film transistor Forming a pixel electrode electrically connected to the thin film transistor on the base substrate, and forming an alignment layer on the base substrate including the pixel electrode.

On the other hand, among the operation modes of the liquid crystal display device, the PVA mode (Patterned Vertical Alignment mode), which is a kind of liquid crystal display of VA mode (Vertical alignment mode), arranges liquid crystal molecules in different directions by using patterned transparent electrodes, By forming the domains, the viewing angle of the liquid crystal display device can be improved. At this time, in order to manufacture the liquid crystal display of the PVA mode, the process of forming the patterned transparent electrode must be accompanied and the improvement of the transmittance is limited.

In recent years, in order to solve the problems described above, by orienting the liquid crystal molecules in different directions by controlling the directionality of the surface of the alignment film formed on the transparent electrode without patterning the pixel electrode or the transparent electrode as the common electrode, It is desired to improve the viewing angle of a liquid crystal display device by forming multi-domains in the same manner as in the PVA mode. The alignment layer may have an inclination angle of an alignment material through irradiation of ultraviolet rays, and inclination angles of alignment materials formed in different domain-forming regions of the alignment layer may be different from each other.

However, even if the alignment layer is divided into the domain formation regions, the inclination angle of the alignment material is restored to the original state due to the voltage applied to the liquid crystal layer and the use of the liquid crystal display for a long time, I will not. This is because the alignment film can not arrange the liquid crystal molecules in different directions, and a wide viewing angle can not be realized, so that the display quality can be deteriorated.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a liquid crystal display panel in which a multi-domain of a liquid crystal layer is formed to improve a viewing angle and transmittance.

Another object of the present invention is to provide a method of manufacturing the liquid crystal display panel.

A liquid crystal display panel according to an embodiment for realizing the object of the present invention includes a display substrate, an opposing substrate, and a liquid crystal layer. The display substrate includes pixel electrodes formed in a plurality of pixel regions. And the counter substrate is opposed to the display substrate. The liquid crystal layer includes liquid crystal molecules interposed between the display substrate and the counter substrate. Wherein one of the display substrate and the counter substrate includes a first alignment layer including a first alignment portion and a second alignment portion surrounding the first alignment portion.

In one embodiment of the present invention, the other of the display substrate and the counter substrate may include a second alignment film formed on the entire surface facing the first alignment film.

In one embodiment of the present invention, the first alignment portion may have a linear angle parallel to the display substrate or the counter substrate, and the second alignment portion may have a vertical scan angle perpendicular to the display substrate or the counter substrate. In another embodiment of the present invention, the first alignment portion is formed on the second alignment portion and may have at least one hole. In still another embodiment of the present invention, any one of the display substrate and the counter substrate may further include a horizontal alignment film formed under the first alignment film.

In one embodiment of the present invention, the first alignment portion may be formed in a dot shape.

In an embodiment of the present invention, the liquid crystal layer may further include a chiral dopant for controlling the directionality of the liquid crystal molecules.

In one embodiment of the present invention, the first orientation portion may be spaced apart from the first orientation portion adjacent to the first orientation portion by 100 占 퐉 to 400 占 퐉.

In the method of manufacturing a liquid crystal display panel according to an embodiment of the present invention for realizing the above-described object, in the step of forming the display substrate, the pixel electrodes are formed on the pixel electrodes formed in each of the plurality of pixel regions, The first alignment layer including at least one first alignment portion formed in a region where the first alignment portion is formed and a second alignment portion surrounding the first alignment portion. A second alignment layer facing the first alignment layer is formed in the step of forming the counter substrate of the method for manufacturing a liquid crystal display panel. Thereby bonding the display substrate and the counter substrate.

In one embodiment of the present invention, the first alignment layer is formed by forming a vertical alignment layer on the pixel electrodes, irradiating the vertical alignment layer with an ion beam through a mask including a pattern corresponding to the first alignment portion, The first alignment layer including the first alignment portion can be formed by forming a horizontal straight line on the surface of the pixel electrode in the vertical alignment layer corresponding to the first alignment portion.

In one embodiment of the present invention, a vertical alignment film is formed on the pixel electrodes, and plasma or ultraviolet rays are irradiated to the vertical alignment film through a mask including a pattern corresponding to the first alignment portion, The first alignment layer including the first alignment portion can be formed by removing the vertical alignment layer in the region corresponding to the first alignment portion.

In one embodiment of the present invention, the step of forming the display substrate may further include irradiating the surface of the pixel electrode exposed by the first alignment portion with an ion beam to induce horizontal orientation of the pixel electrode have.

According to such a liquid crystal display panel and its manufacturing method, the multi-domain of the liquid crystal layer can be formed by forming the first orientation portion surrounded by the second orientation portion and having a different orientation from the second orientation portion. The first alignment portion can be easily formed by irradiating an ion beam, ultraviolet ray, or plasma to the horizontal alignment layer and patterning the same. Thus, the multi-domain of the liquid crystal layer can be formed while minimizing the decrease in the transmittance, thereby securing a wide viewing angle and improving the display quality.

In addition, since the step of forming a separate pattern of the pixel electrode and the common electrode layer can be omitted, the manufacturing process can be simplified and the productivity can be improved.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

In the accompanying drawings, the dimensions of the substrate, layer (film), or patterns are shown enlarged in actuality for clarity of the present invention. In the present invention, when each layer (film), pattern or structure is referred to as being formed on the substrate, on each layer (film) or on the patterns, ) Means that the pattern or structures are directly formed on or under the substrate, each layer (film) or patterns, or another layer (film), another pattern or other structure may be additionally formed on the substrate.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view of a liquid crystal display panel according to an embodiment of the present invention.

2 is a cross-sectional view taken along line I-I 'of FIG.

1 and 2, a liquid crystal display panel 500 according to an embodiment of the present invention includes a display substrate 100, an opposing substrate 200 facing the display substrate 100, And a liquid crystal layer 300 interposed between the counter substrate 200 and the counter substrate 200.

The display substrate 100 includes a first base substrate 110, a gate line GL, a storage electrode STE, a gate insulating layer 120, a data line DL, a thin film transistor TFT as a switching device, Layer 140, an organic layer 150, a pixel electrode PE, and a first alignment layer AL1. The unit pixel P is partitioned by the gate line GL and the data line DL in the display substrate 100 and the unit pixel P is divided into the thin film transistor TFT and the pixel electrode PE ).

The first base substrate 110 may be, for example, a glass substrate, a soda lime substrate, a plastic substrate, or the like.

The gate line GL is formed on the first base substrate 110. The gate line GL extends in the first direction D1 of the liquid crystal display panel 500 and a plurality of the gate lines GL may be arranged in the second direction D2 different from the first direction D1 . The second direction D2 may be a direction perpendicular to the first direction D1. The gate line GL may be electrically connected to the thin film transistor TFT.

The storage electrode STE may be connected to the gate line of the gate line GL. The storage electrode STE overlaps the pixel electrode PE to charge the voltage applied to the pixel electrode PE. Although the storage electrode STE is connected to the front gate line in the embodiment of the present invention, the storage electrode STE is formed independently of the gate line GL and the front gate line And connected to the storage wiring (not shown).

The gate insulating layer 120 may be formed on the first base substrate 110 including the gate line GL. The gate insulating layer 120 may be formed of, for example, silicon oxide, silicon nitride, or the like.

The data lines DL extend in the second direction D2, and a plurality of data lines DL may be arranged in parallel in the first direction D1. The data line DL may be insulated by the gate line GL and the gate insulating layer 120 and intersect with each other. The data line DL may be electrically connected to the thin film transistor TFT.

The thin film transistor TFT may be electrically connected to the gate line GL and the data line DL. The thin film transistor (TFT) may be electrically connected to the pixel electrode PE. The thin film transistor TFT may include a gate electrode GE, a source electrode SE, a drain electrode DE, and an active pattern AP. The gate electrode GE may be formed between the first base substrate 110 and the gate insulating layer 120 by being connected to the gate line GL. The source electrode SE may be formed on the active pattern AP in conjunction with the data line DL. The drain electrode DE may be spaced apart from the source electrode SE and may be formed on the active pattern AP. One end of the drain electrode DE may be electrically connected to the pixel electrode PE through the passivation layer 140 and the contact hole CNT formed in the organic layer 150. The active pattern AP is formed on the gate insulating layer 130 on the gate electrode GE. The source electrode SE and the drain electrode DE may be formed on the active pattern AP. The active pattern AP may include a semiconductor layer 130a formed on the gate insulating layer 130 and an ohmic contact layer 130b formed on the semiconductor layer 130a.

The passivation layer 140 is formed on the first base substrate 110 on which the TFTs are formed. The passivation layer 140 may be formed of, for example, silicon oxide, silicon nitride, or the like. The organic layer 150 is formed on the passivation layer 140. The organic layer 150 may be formed of a photosensitive organic material. The organic layer 150 may planarize the display substrate 100 and may be omitted in some cases. The passivation layer 140 and the organic layer 150 include the contact hole CNT exposing one end of the drain electrode DE.

The pixel electrode PE is formed on the first base substrate 110 on which the organic layer 150 is formed. The pixel electrode PE may be electrically connected to the thin film transistor TFT by contacting the drain electrode DE exposed through the contact hole CNT. The pixel electrodes PE may be formed for each unit pixel P. The pixel electrode PE is formed so as to cover the entire unit pixel P of the first base substrate 110 in a separate pattern, for example, without an opening. The pixel electrode PE may be formed of, for example, indium tin oxide (ITO), indium zinc oxide (IZO), or the like.

The first alignment layer AL1 is formed on the first base substrate 110 on which the pixel electrodes PE are formed. The first alignment layer AL1 includes a first alignment portion HP and a second alignment portion VP. The first alignment layer AL1 may vertically align the liquid crystal molecules 310 of the liquid crystal layer 300 with reference to the surface of the first base substrate 110, HP). That is, the first alignment layer AL1 may be a vertical alignment layer including the first alignment portion HP. The alignment material formed on the second alignment unit VP may have a vertical angle perpendicular to the surface of the first base substrate 110. The first alignment unit HP is surrounded by the second alignment unit VP. The alignment material formed on the first alignment unit HP may have a horizontal straight line on the surface of the first base substrate 110. The first alignment unit HP may be formed in a dot shape on the first alignment layer AL1.

In one embodiment of the present invention, the first alignment layer (AL1) includes three first alignment portions (HP) as an example. The first alignment portion (HP) ) May be formed. The first alignment portions HP adjacent to each other are formed apart from each other. The distance d between the first alignment portions HP adjacent to each other may be about 100 탆 to about 400 탆. If the distance d is greater than about 400 탆, the liquid crystal molecules 310 may not be aligned by the first alignment layer AL1 and inclination defects may be generated, There is a problem in that it is not possible to normally orient the optical fibers 310. Further, when the distance d is less than about 100 탆, there is a problem that the liquid crystal molecules 310 can not be normally oriented due to interference between the domains formed by the liquid crystal molecules 310. The distance d may be, for example, about 200 mu m. Regarding the domain formation of the liquid crystal molecules 310 by the first alignment layer AL1, the second alignment layer AL2 of the counter substrate 200 will be described in detail with reference to FIG. 3 do.

The counter substrate 200 includes a light shielding pattern 220 formed on a second base substrate 210, a color filter 230, an overcoat layer 240, a common electrode layer 250, and a second alignment layer AL2 .

The second base substrate 210 may be substantially the same as the first base substrate 110. The second base substrate 210 may be disposed opposite to the first base substrate 110.

The light shielding pattern 220 is formed on the second base substrate 210. Specifically, the light shielding pattern 220 is formed on the second base substrate 210 (corresponding to the first base substrate 110 on which the gate lines GL, the data lines DL, and the TFTs are formed) ). ≪ / RTI >

The color filter 230 is formed on the second base substrate 210 on which the light shielding pattern 220 is formed. The color filter 230 may be partially overlapped with the light shielding pattern 220. The color filter 230 is formed on the unit pixel P of the second base substrate 210. The color filter 230 may be formed on the second base substrate 210 corresponding to the first base substrate 110 on which the pixel electrodes PE are formed. The color filter 230 may represent, for example, red, green or blue.

The overcoat layer 240 may be formed on the second base substrate 210 on which the light shielding pattern 220 and the color filter 230 are formed and the counter substrate 200 may be planarized. The overcoat layer 240 may be omitted in some cases.

The common electrode layer 250 is formed on the second base substrate 210 on which the overcoat layer 240 is formed. The common electrode layer 250 receives a voltage from the pixel electrode PE. The common electrode layer 250 is formed on the entire surface of the counter substrate 200. The common electrode layer 240 is formed to cover the entire unit pixel P of the second base substrate 210 in a separate pattern, for example, without any openings. Examples of the material for forming the common electrode layer 250 include ITO and IZO.

The second alignment layer AL2 is formed on the second base substrate 210 on which the common electrode layer 250 is formed. The second alignment film AL2 may be a substantially normal vertical alignment film. The alignment material for forming the second alignment layer AL2 may have a vertical angle perpendicular to the surface of the second base plate 210. [ The second alignment layer AL2 may be formed on the entire surface of the counter substrate 200. [ The second alignment layer (AL2) may cover the entire surface of the common electrode layer (250).

The liquid crystal layer 300 is interposed between the display substrate 100 and the counter substrate 200. The liquid crystal layer 300 includes a plurality of liquid crystal molecules 310 interposed between the first alignment layer AL1 and the second alignment layer AL2. The set of liquid crystal molecules 310 constituting the liquid crystal layer 300 may have a negative dielectric constant anisotropy. The liquid crystal molecules 310 are aligned by the first alignment layer AL1 and the second alignment layer AL2 such that the major axes of the liquid crystal molecules 310 are aligned with the first base substrate 110, May be arranged perpendicular to the surface with reference to the surface of the substrate. Specifically, the liquid crystal molecules 310 are arranged between the second alignment portion VP of the first alignment layer AL1 and the second alignment layer AL2 in a direction perpendicular to the surface of the first base substrate 110 . The liquid crystal molecules 310 are arranged to have an inclination angle by the first alignment unit HP as the liquid crystal molecules 310 approach the first alignment unit HP from the second alignment unit VP. The liquid crystal molecules 310 may be arranged to have an inclination angle in a boundary region between the first orientation unit HP and the second orientation unit VP.

3 is an enlarged cross-sectional view showing an enlarged view of the first alignment portion of the first alignment film shown in Fig.

2 and 3, the second alignment portion VP of the first alignment layer AL1 and the second alignment layer AL2 are formed on the first alignment layer AL1 and / or the second alignment layer AL2, the surface of which has the perpendicularity due to the perpendicularity of the alignment material. Hereinafter, for convenience of description, the portion having the perpendicularity of the alignment material will be referred to as a vertical manifestation portion of the alignment material. In other words, the vertical expression unit may have a pretilt angle of about 85 ° to about 90 ° with respect to the surface of the first base substrate 110.

The first orientation unit HP is formed by vertically orienting the vertically developed portion of the alignment material at a predetermined angle with respect to the surface of the first base substrate 110, It is possible to have a relatively low angle of view. For example, the first orientation unit HP may have a pretilt angle of about 0 ° to about 10 ° with respect to the surface of the first base substrate 110. The first orientation part HP is formed of an orientation material substantially the same as the orientation material of the second orientation part VP, but the vertical orientation part of the orientation material receives external energy, As shown in FIG.

The liquid crystal molecules are interposed between the first alignment layer AL1 and the second alignment layer AL2 by the first alignment portion HP of the first alignment layer AL1, The molecules 310 may not be vertically arranged with respect to the first base substrate 110 but may be disposed at a predetermined angle with respect to the first orientation unit HP. That is, in the boundary region between the first alignment unit HP and the second alignment unit VP, the liquid crystal molecules 310 are not perpendicular to the surface of the first base substrate 110 but are inclined at a predetermined angle . The liquid crystal molecules 310 may be arranged in a conical shape or a conical shape extending toward the second alignment layer AL2 with the first alignment portion HP as a vertex. Accordingly, the liquid crystal layer 300 may include a plurality of domains in which the liquid crystal molecules 310 are oriented by the first alignment unit HP. That is, the plurality of domains can be formed by the first alignment unit HP of the first alignment layer AL1 without the pattern of the pixel electrode PE and / or the common electrode layer 250. [

The liquid crystal layer 300 may further include a chiral dopant 320 capable of controlling the directionality of the liquid crystal molecules 310. In the chiral dopant, the liquid crystal molecules 310 disposed adjacent to the first alignment unit HP can be inclined with respect to the surface of the first base substrate 110 and stably maintained in a lying state Can be controlled.

4 to 6 are cross-sectional views illustrating a method of manufacturing the liquid crystal display panel shown in FIG.

Referring to FIGS. 1 and 4, a gate metal layer (not shown) is formed on the first base substrate 110, and the gate line GL, the storage electrode STE, A gate pattern including the gate electrode GE can be formed. The gate metal layer may be patterned through, for example, a photolithography process to form the gate pattern.

The gate insulating layer 120 may be formed on the first base substrate 110 including the gate pattern. A silicon layer (not shown) and an amorphous silicon layer (not shown) are formed on the first base substrate 110 on which the gate insulating layer 120 is formed, and the silicon layer and the amorphous silicon layer are patterned Thereby forming an active pattern AP.

A data metal layer (not shown) is formed on the first base substrate 110 on which the active pattern AP is formed, and the data metal layer is patterned to form the data line DL, the source electrode SE, A source pattern including the electrode DE can be formed.

The passivation layer 140 and the organic layer 150 are sequentially formed on the first base substrate 110 including the source pattern and the passivation layer 140 and the organic layer 150 are patterned, The contact hole CNT exposing one end of the drain electrode DE can be formed.

A transparent electrode layer (not shown) is formed on the first base substrate 110 including the passivation layer 140 on which the contact hole CNT is formed and the organic layer 150. The transparent electrode layer may be in contact with the drain electrode DE through the contact hole CNT. The transparent electrode layer is patterned to form the pixel electrode PE.

A vertical alignment layer 160 is formed on the first base substrate 110 on which the pixel electrodes PE are formed. The vertical alignment layer 160 may be a film that is primarily formed to form the first alignment layer AL1, and may be substantially a normal vertical alignment layer. That is, the vertical alignment layer 160 includes the alignment layer, and the vertical alignment layer 160 may be perpendicular to the liquid crystal molecules 310 to vertically orient the liquid crystal molecules 310 Lt; / RTI >

5, a mask MASK is disposed on the first base substrate 110 on which the vertical alignment layer 160 is formed and an ion beam is irradiated on the mask MASK, 1 orientation portion HP is formed. The remaining portions of the vertical alignment layer 160 excluding the first alignment portion HP may be defined as the second alignment portions VP by forming the first alignment portion HP. That is, the first alignment layer HP may be formed by irradiating the vertical alignment layer 160 with an ion beam to form the first alignment layer AL1.

Specifically, the mask MASK includes an opening 10 through which the ion beam is transmitted to a region corresponding to the first orientation portion HP, and an opening 10 through which the ion beam is transmitted to the region other than the first orientation portion HP (20). When the mask MASK is disposed on the vertical alignment layer 160 and the ion beam is irradiated, the ion beam reaches the vertical alignment layer 160 through the opening 10, 1 base substrate 110 so that the first alignment unit HP can be formed. Accordingly, the display substrate 100 can be manufactured.

6, the counter substrate 200 includes the light shielding pattern 220, the color filter 230, the overcoat layer 240, the common electrode layer 250, And the second alignment film AL2 in this order. The second alignment layer AL2 may be formed substantially of the same material as the vertical alignment layer 160. The second alignment film AL2 may be a substantially normal vertical alignment film.

According to the embodiment of the present invention described above, the multi-domain of the liquid crystal layer 300 can be formed by forming the first orientation unit HP. Since the patterning of the pixel electrode PE and / or the common electrode layer 250 is omitted, the lowering of the transmittance can be minimized. Accordingly, it is possible to secure a wide viewing angle, to improve the display quality of the liquid crystal display panel 500, and to simplify the manufacturing process and improve the productivity.

The first alignment layer AL1 including the first alignment portion HP and the second alignment portion VP is formed on the display substrate 100 and the alignment layer AL1 is formed on the counter substrate 200, The second alignment layer AL2 is formed on the entire surface of the first alignment layer AL1 and the second alignment layer AL2 on the pixel electrode PE of the display substrate 100. [ And the first alignment layer AL1 may be formed on the common electrode 250 of the counter substrate 200. [

7 is a cross-sectional view of a liquid crystal display panel according to another embodiment of the present invention.

7, a liquid crystal display panel according to another embodiment of the present invention includes a liquid crystal display panel according to an embodiment of the present invention shown in FIGS. 1 and 2, . Therefore, overlapping detailed description will be omitted.

7, a liquid crystal display panel according to another embodiment of the present invention includes a display substrate 100 including a first alignment layer AL1 formed on a pixel electrode PE, and a second alignment layer AL2 And includes a counter substrate 200 and a liquid crystal layer 300.

The first alignment layer AL1 includes a first alignment portion HP and a second alignment portion VP. The first alignment part HP may be formed as a hole in which a part of the first alignment layer AL1 is removed. The pixel electrode PE formed under the first alignment layer AL1 may be exposed by the first alignment portion HP. Since the first alignment unit HP is formed by removing a part capable of vertically aligning the liquid crystal molecules 310 of the liquid crystal layer 300, It can have a horizontal property. In this manner, the multi-domain of the liquid crystal layer 300 can be formed by forming the first alignment portion HP.

On the other hand, the surface of the pixel electrode PE exposed by the first alignment unit HP is aligned with the pixel electrode PE by the materials forming the pixel electrode PE, for example, ITO, IZO, Can have a level of horizontal relative to the verticality of the VP. However, in order to enhance the horizontality of the surface of the pixel electrode PE, the horizontal alignment of the pixel electrode PE may be induced by irradiating the pixel electrode PE with an ion beam.

The counter substrate 200 includes a light shielding pattern 220 formed on the second base substrate 210. The light shielding pattern 220 is formed on a region of the second base substrate 210 corresponding to the gate line GL (see FIG. 1), the data line DL and the thin film transistor TFT of the display substrate 100, May be formed in the region of the second base substrate 210 corresponding to the first alignment portion HP. The light shielding pattern 220 is formed on the second base substrate 210 corresponding to the first alignment unit HP so as to prevent light leakage that may occur in the region adjacent to the first alignment unit HP .

Hereinafter, a method of manufacturing the display substrate shown in Fig. 7 will be described with reference to Figs. 4 and 8. Fig.

The process for producing the display substrate shown in Fig. 7 is similar to that of the present invention, which includes the steps of forming the gate pattern, the gate insulating layer, the active pattern, the source pattern, the passivation layer, the organic layer, the pixel electrode, Is substantially the same as the manufacturing method of the display substrate according to one embodiment. However, the display substrate shown in FIG. 7 may further include ion-beam processing the surface of the pixel electrode before forming the vertical alignment film after the pixel electrode is formed. In the step of forming the first alignment film, The detailed description will be omitted, and the steps having the above-described differences will be described in detail.

8 is a cross-sectional view for explaining a method of manufacturing the display substrate shown in Fig.

8, a source pattern including a gate pattern including a gate electrode GE, a gate insulating layer 120, an active pattern AP, a source electrode SE and a drain electrode DE, a passivation layer The pixel electrode PE is formed on the first base substrate 110 on which the organic layer 140 and the organic layer 150 are formed.

An ion beam is irradiated toward the pixel electrode PE on the first base substrate 110 on which the pixel electrode PE is formed. It is possible to irradiate the pixel electrode PE with an ion beam to induce a horizontal alignment such that the pixel electrode PE is level with respect to the surface of the first base substrate 110. [

8 and 4, a vertical alignment layer 160 is formed on the pixel electrode PE to which the ion beam is irradiated, and the first alignment layer 160 is formed on the first base substrate 110 on which the vertical alignment layer 160 is formed. A mask (not shown) including a pattern corresponding to one orientation portion HP is arranged. Ultraviolet rays are irradiated from the upper portion of the mask toward the first base substrate 110 on which the vertical alignment layer 160 is formed. The alignment material constituting the vertical alignment layer 160 may be ashed by the ultraviolet light to form the first alignment portion HP. Alternatively, the first alignment unit HP may be formed by applying plasma instead of ultraviolet rays. Accordingly, a portion of the vertical alignment layer 160 may be removed to form the hole-shaped first alignment portion HP.

9 is a cross-sectional view of a liquid crystal display panel according to another embodiment of the present invention.

9, in the liquid crystal display panel according to another embodiment of the present invention, the display substrate further includes a horizontal alignment film, and a light blocking pattern of the counter substrate is not formed in a region corresponding to the first alignment portion of the first alignment film And is substantially the same as the liquid crystal display panel according to another embodiment of the present invention shown in Fig. Therefore, overlapping detailed description will be omitted.

9, a liquid crystal display panel according to another exemplary embodiment of the present invention includes a pixel electrode PE, a horizontal alignment layer 170 formed on the pixel electrode PE, A display substrate 100 including a first alignment layer AL1, an opposing substrate 200 including a second alignment layer AL2, and a liquid crystal layer 300. [

The horizontal alignment layer 170 is formed on the first base substrate 110 on which the pixel electrodes PE are formed. In the horizontal alignment film 170, the alignment material constituting the horizontal alignment film 170 has a horizontal straight line on the surface of the first base substrate 110. The horizontal alignment layer 170 may be exposed by a first alignment portion HP having a hole shape of the first alignment layer AL1. The formation of the horizontal alignment film 170 exposed through the first alignment unit HP may be performed by forming the first alignment unit HP such that the liquid crystal molecules of the liquid crystal layer 300 are aligned with the first alignment unit HP It can be easily arranged to be inclined in the boundary area of the second alignment part VP.

The method of manufacturing a liquid crystal display panel according to still another embodiment of the present invention is similar to that of the first embodiment except that the horizontal alignment film 170 is further formed on the first base substrate 110 on which the pixel electrode PE is formed, Is substantially the same as the manufacturing method of the liquid crystal display panel according to another embodiment of the present invention described in the above. Therefore, duplicate detailed explanations are omitted.

The first alignment layer AL1 including the first alignment portion HP and the second alignment portion VP is formed on the display substrate 100 and the alignment layer AL1 is formed on the counter substrate 200, The second alignment layer AL2 is formed on the entire surface of the first alignment layer AL1 and the second alignment layer AL2 on the pixel electrode PE of the display substrate 100. [ And the first alignment layer AL1 may be formed on the common electrode 250 of the counter substrate 200. [

As described in detail above, the multi-domain of the liquid crystal layer can be formed by forming the first orientation portion surrounded by the second orientation portion with a different orientation from the second orientation portion in the first orientation film of the display substrate. The first alignment portion can be easily formed by irradiating an ion beam, ultraviolet ray, or plasma to the horizontal alignment layer and patterning the same. Thus, the multi-domain of the liquid crystal layer can be formed while minimizing the decrease in the transmittance, thereby securing a wide viewing angle and improving the display quality. In addition, since the step of forming a separate pattern of the pixel electrode and the common electrode layer can be omitted, the manufacturing process can be simplified and the productivity can be improved.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

1 is a plan view of a liquid crystal display panel according to an embodiment of the present invention.

2 is a cross-sectional view taken along line I-I 'of FIG.

FIG. 3 is an enlarged cross-sectional view showing an enlarged horizontal orientation portion of the first alignment film shown in FIG. 2. FIG.

4 to 6 are cross-sectional views illustrating a method of manufacturing the liquid crystal display panel shown in FIG.

7 is a cross-sectional view of a liquid crystal display panel according to another embodiment of the present invention.

8 is a cross-sectional view for explaining a method of manufacturing the display substrate shown in Fig.

9 is a cross-sectional view of a liquid crystal display panel according to another embodiment of the present invention.

Description of the Related Art

500: display panel 100: display substrate

200: opposing substrate 300: liquid crystal layer

AL1, AL2: first and second alignment films VP: vertical alignment portions

HP: Horizontal alignment part 310: Liquid crystal molecule

320: chiral dopant 160: vertical alignment film

170: Horizontal alignment film 220: Shading pattern

Claims (17)

A display substrate including pixel electrodes formed in a plurality of pixel regions; A counter substrate facing the display substrate; And And a liquid crystal layer including liquid crystal molecules interposed between the display substrate and the counter substrate, Wherein one of the display substrate and the counter substrate includes a first alignment layer having a first alignment portion and a second alignment portion surrounding the first alignment portion, Wherein the first alignment portion has a dot shape. 2. The display device according to claim 1, wherein the other of the display substrate and the counter substrate comprises: And a second alignment film formed on the entire surface opposite to the first alignment film. 2. The display device according to claim 1, wherein the first orientation portion has a linearly oblique angle that is parallel to a surface of the display substrate or the counter substrate, And wherein the second alignment portion has a linear angle perpendicular to the surface of the display substrate or the counter substrate. A display substrate including pixel electrodes formed in a plurality of pixel regions; A counter substrate facing the display substrate; And And a liquid crystal layer including liquid crystal molecules interposed between the display substrate and the counter substrate, Wherein one of the display substrate and the counter substrate includes a first alignment layer having a first alignment portion and a second alignment portion surrounding the first alignment portion, Wherein the first alignment layer is formed on the second alignment portion and has at least one hole. The display device according to claim 4, wherein the display substrate or the counter substrate includes: And a horizontal alignment layer formed under the first alignment layer. delete The liquid crystal display device according to claim 1, wherein the pixel electrode And patterned to cover the entire surface of each pixel region. The light emitting device according to claim 7, wherein the counter substrate And a common electrode layer formed on the front surface of the counter substrate. A display substrate including pixel electrodes formed in a plurality of pixel regions; A counter substrate facing the display substrate; And And a liquid crystal layer including liquid crystal molecules interposed between the display substrate and the counter substrate, Wherein one of the display substrate and the counter substrate includes a first alignment layer having a first alignment portion and a second alignment portion surrounding the first alignment portion, And a chiral dopant for controlling the directionality of the liquid crystal molecules. A display substrate including pixel electrodes formed in a plurality of pixel regions; A counter substrate facing the display substrate; And And a liquid crystal layer including liquid crystal molecules interposed between the display substrate and the counter substrate, Wherein one of the display substrate and the counter substrate includes a first alignment layer having a first alignment portion and a second alignment portion surrounding the first alignment portion, Further comprising a light-shielding pattern formed in a region of the counter substrate opposite to the first alignment portion. A display substrate including pixel electrodes formed in a plurality of pixel regions; A counter substrate facing the display substrate; And And a liquid crystal layer including liquid crystal molecules interposed between the display substrate and the counter substrate, Wherein one of the display substrate and the counter substrate includes a first alignment layer having a first alignment portion and a second alignment portion surrounding the first alignment portion, Wherein the second alignment unit is spaced apart from the first alignment unit adjacent to the first alignment unit by 100 占 퐉 to 400 占 퐉. And a first alignment layer formed on the pixel electrodes formed in each of the plurality of pixel regions, the first alignment layer including at least one first alignment portion formed in a region corresponding to each pixel region and a second alignment portion surrounding the first alignment portion The method comprising: forming a display substrate; Forming a counter substrate including a second alignment layer facing the first alignment layer; And And combining the display substrate and the counter substrate, Wherein the first alignment portion is a dot. 13. The method of claim 12, wherein forming the display substrate Forming a vertical alignment layer on the pixel electrodes; And Irradiating the vertical alignment film with an ion beam through a mask including a pattern corresponding to the first alignment portion to form a horizontal alignment angle on the surface of the pixel electrode in the vertical alignment film in a region corresponding to the first alignment portion And forming the first alignment layer including the first alignment portion by forming the first alignment layer. 13. The method of claim 12, wherein forming the display substrate Forming a vertical alignment layer on the pixel electrodes; And The method comprising: irradiating the vertical alignment layer with plasma or ultraviolet rays through a mask including a pattern corresponding to the first alignment portion to remove the vertical alignment layer in a region corresponding to the first alignment portion, And forming a first alignment layer on the first alignment layer. 15. The method of claim 14, wherein forming the display substrate And forming a horizontal alignment layer between the pixel electrode and the first alignment layer. 15. The method of claim 14, wherein forming the display substrate And irradiating the surface of the pixel electrode exposed by the first alignment portion with an ion beam to induce horizontal orientation of the pixel electrode. And a first alignment layer formed on the pixel electrodes formed in each of the plurality of pixel regions, the first alignment layer including at least one first alignment portion formed in a region corresponding to each pixel region and a second alignment portion surrounding the first alignment portion The method comprising: forming a display substrate; Forming a counter substrate including a second alignment layer facing the first alignment layer; And And combining the display substrate and the counter substrate, The step of forming the display substrate Forming a vertical alignment layer on the pixel electrodes; And The method comprising: irradiating the vertical alignment layer with plasma or ultraviolet rays through a mask including a pattern corresponding to the first alignment portion to remove the vertical alignment layer in a region corresponding to the first alignment portion, And forming a first alignment layer, The step of forming the counter substrate And forming a light shielding pattern in a region corresponding to the first alignment portion.

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