WO2012031415A1

WO2012031415A1 - Liquid crystal display panel and color filter substrate thereof

Info

Publication number: WO2012031415A1
Application number: PCT/CN2010/077659
Authority: WO
Inventors: 贺成明; 李冠政
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2010-09-08
Filing date: 2010-10-11
Publication date: 2012-03-15
Also published as: CN101982803B; CN101982803A

Abstract

A liquid crystal display panel and a color filter substrate thereof are provided. The color filter substrate comprises a substrate, a plurality of color filter units (700), a display area light shield layer (701) and a border light shield layer (20). The color filter units (700), the display area light shield layer (701), the border light shield layer (20) and a transparent conductive layer (72) are formed on the substrate in order. The border light shield layer (20) surrounds one display area (10) of the liquid crystal panel and forms a border light shield area (21) all around the display area (10). The color filter substrate further comprises a plurality of light shield spacing materials (30). The light shield spacing materials (30) are formed on the transparent conductive layer (72) and arranged on the border around the display area (10), and extends to the border light shield area (20) formed by border light shield layer (701). Each light shield spacing material (30) is separated from the light shield spacing material (30) nearby with certain distance to form a slit (300), and the liquid crystal material in the range of the display area disperses and flows from the slit (300) to the border light shield area by capillarity.

Description

Liquid crystal panel and color filter substrate thereof

Technical field

The present invention relates to a liquid crystal panel, and more particularly to a liquid crystal panel and a color filter substrate thereof which can avoid the phenomenon that liquid crystal bubbles are generated at the edges of the display region during the manufacturing process. Background technique

As shown in FIG. 1, it is a partial side cross-sectional view showing a liquid crystal panel in the prior art. The conventional liquid crystal panel 900 mainly includes a thin film transistor (TFT) substrate 91, a color filter (CF) 92, an upper substrate 93, and a liquid crystal layer 94. The thin film transistor substrate 91 includes a pixel electrode layer 911 and an alignment film 912. The color filter 92 includes a plurality of color filter units 921R and a plurality of black matrix (BM) 922, which may be formed on the bottom surface of the upper substrate 93; or a color filter array (Color Filter) On Array, C0A) technology is directly formed on the thin film transistor substrate 91. The color filter 92 further includes a protective layer 923, a transparent conductive layer 924, and an alignment film 925. The liquid crystal layer 94 is interposed between the thin film transistor substrate 91 and the color filter 92 and includes a liquid crystal material. During the assembly process of the thin film transistor substrate 91 and the color filter 92 and the upper substrate 93, a spacer 95 is disposed between the two as a support to maintain a certain cell gap. The thickness of the liquid crystal material is controlled. The spacers 95 are pre-disposed in the space of the liquid crystal layer 94 or corresponding to the light shielding layer 922 disposed between the color filter units. In addition, the thin film transistor substrate 91 and the edge of the upper substrate 93 further have a sealing material 96 to seal the liquid crystal material of the liquid crystal layer 94.

In the manufacturing process of a large-sized liquid crystal panel, it is often easy for the liquid crystal layer 94 to have an edge bubble in an edge light-blocking region B around a display area A of the liquid crystal panel 900 due to poor diffusion of the liquid crystal material during implantation. . When the bubble 97 is larger than the edge light-blocking area B and is expanded inwardly to the position corresponding to the color filter unit 921R of the display area A, the display of the product is caused. Area A is defective and becomes a defective product, resulting in poor production yield. If the color filter 92 is directly formed on the thin film transistor substrate 91 by the COA technique, the surface of the thin film transistor substrate 91 may become more uneven, so that the associated liquid crystal material is poorly diffused and the bubble 97 The defect will become more serious due to the uneven surface of the thin film transistor substrate 91, which makes it difficult to increase the production yield of the product using the COA technology.

Therefore, it is necessary to provide a liquid crystal panel and a color filter substrate thereof to solve the problems of the prior art. Summary of the invention

The main object of the present invention is to provide a color filter substrate, wherein the slit formed by the photoresist spacer material can help the liquid crystal material of the liquid crystal layer to diffuse and flow toward the edge, thereby effectively preventing the liquid crystal material from generating bubbles at the edges of the two substrates. .

A secondary object of the present invention is to provide a liquid crystal panel which can effectively reduce the risk of liquid crystal bubbles being generated at the edge of the display region of the liquid crystal panel during implantation by utilizing the shape and arrangement of the photoresist spacer.

In order to achieve the foregoing object of the present invention, a color filter substrate includes a substrate, a plurality of color filter units, a display area light shielding layer, and an edge light shielding layer, wherein the color filter unit, the The display area light shielding layer, the edge light shielding layer and a transparent conductive layer are sequentially formed on the substrate, and the edge light shielding layer surrounds a display area of a liquid crystal panel to form an edge shading corresponding to the periphery of the display area. The color filter substrate further includes a plurality of photoresist spacers formed on the transparent conductive layer and disposed on the peripheral edge of the display region and extending to the edge formed by the edge light shielding layer. a light-shielding region, each of the photoresist spacers is spaced apart from the adjacent photoresist spacers to form a slit, and the liquid crystal material in the display region is shielded from the slit to the edge by capillary phenomenon The area spreads.

In an embodiment of the invention, the display area light shielding layer connects the edge along an extending direction a light shielding layer, wherein the photoresist spacer extends along the extending direction of the light shielding layer of the display region to the edge light shielding layer to the edge light shielding region.

In an embodiment of the invention, each of the photoresist spacers has an elongated shape.

In an embodiment of the invention, each of the photoresist spacers comprises a plurality of longer segments and a plurality of shorter segments, and the longer segments and the shorter segments are alternately arranged in an elongated strip shape.

In an embodiment of the invention, each of the photoresist spacers comprises a plurality of segments of equal length, and the plurality of segments are arranged in an elongated strip.

In an embodiment of the invention, each of the photoresist spacers has a length distributed in the display area of less than or equal to 30 mm; and a length distributed in the edge shading area is less than or equal to 20 mm.

Furthermore, the present invention further provides a liquid crystal panel, characterized in that: the liquid crystal panel comprises: a display area;

a liquid crystal layer comprising a liquid crystal material disposed within the display area;

An edge light shielding layer surrounding the display area and correspondingly forming an edge light shielding area around the display area;

a plurality of photoresist spacers disposed on the peripheral edge of the display area and extending to an edge light-shielding area formed by the edge light-shielding layer around the display area, each of the photoresist spacers adjacent thereto The photoresist spacers are spaced apart to form a slit, and the liquid crystal material of the liquid crystal layer diffuses and flows from the slit to the edge light shielding region by capillary action.

In an embodiment of the invention, the liquid crystal panel includes a first substrate, a second substrate, and a sealing material, and the second substrate is disposed opposite to the first substrate; the sealing material surrounds the display And bonding the first substrate and the second substrate; the liquid crystal layer is disposed between the first substrate, the second substrate and the sealing material; and the plurality of photoresist spacers It is disposed between the first substrate and the second substrate.

In an embodiment of the invention, the second substrate is a thin film transistor substrate; the liquid crystal panel includes a color filter, and the color filter and the first substrate form a color filter. a substrate, wherein the color filter is formed on a bottom surface of the first substrate and faces the second substrate. In an embodiment of the invention, the second substrate is a thin film transistor substrate, and the liquid crystal panel includes a color filter, and the color filter is formed on the thin film transistor substrate.

In an embodiment of the invention, the color filter includes the edge light shielding layer, and further includes a display area light shielding layer, wherein the display area light shielding layer is disposed in the display area and is The edge light shielding layers are connected in one body.

In an embodiment of the invention, the light shielding layer of the display area is connected to the edge light shielding layer along an extending direction, and the photoresist spacer is extending along the light shielding layer of the display area to the edge light shielding layer. Extending to the edge shading area.

In an embodiment of the invention, an outer end of the photoresist spacer maintains a spacing from the sealing material.

Compared with the prior art, the liquid crystal panel and the color filter substrate of the present invention form a plurality of slits located at the edge of the display area by using the strip shape and arrangement of the photoresist spacer material, thereby helping the liquid crystal material to pass through the capillary phenomenon. The diffusion flow can effectively reduce the risk of the liquid crystal material generating liquid crystal bubbles at the edge of the display area, so that the yield of the product is improved. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial side cross-sectional view showing a liquid crystal panel of the prior art. Figure 2 is a schematic top plan view showing a first embodiment of the liquid crystal panel of the present invention.

Figure 3 is a partially enlarged schematic view of Figure 2.

Figure 4 is a partial side cross-sectional view showing a first embodiment of the liquid crystal panel of the present invention.

Figure 5 is a partial side cross-sectional view showing a second embodiment of the liquid crystal panel of the present invention.

Figure 6 is a top plan view showing a second embodiment of the photoresist spacer of the liquid crystal panel of the present invention. Figure 7 is a top plan view showing a third embodiment of the photoresist spacer of the liquid crystal panel of the present invention. detailed description

The above described objects, features and advantages of the present invention will become more apparent from the description of the appended claims. Furthermore, the directional terms mentioned in the present invention are, for example, "upper", "lower", "before", "after", "left", "right", "inside", "outside", "side", etc. Just refer to the direction of the additional schema. Therefore, the directional terminology used is for the purpose of illustration and understanding of the invention.

2, FIG. 3 and FIG. 4, FIG. 2 is a schematic top plan view of a first embodiment of a liquid crystal panel according to the present invention; FIG. 3 is a partially enlarged schematic view of FIG. In a partial side cross-sectional view of the example, the liquid crystal panel includes a display area 10, an edge black matrix, a plurality of photo spacers, and a liquid crystal layer 40.

Referring to FIG. 3, a plurality of color filter units 700 arranged in a two-dimensional array are disposed in the display area 10.

The edge light shielding layer 20 surrounds the display area 10, and an edge light shielding area 21 is formed corresponding to the periphery of the display area 10.

The plurality of photoresist spacers 30 are disposed on the peripheral edges of the display region 10 and extend into the edge light shielding regions 21 formed by the edge light shielding layer 20, and each of the photoresist spacers 30 is adjacent thereto. The photoresist spacers 30 are spaced apart to form a slit 300. Therefore, the arrangement of the plurality of photoresist spacers 30 constitutes a plurality of slits 300 surrounding the display region 10. In this embodiment, each The photoresist spacer 30 is in the form of a strip. Furthermore, the length of each photoresist spacer distributed over the display area is preferably less than or equal to 30 mm; the length distributed over the edge shading area is preferably less than or equal to 20 mm.

As shown in FIG. 3 and FIG. 4 , the liquid crystal layer 40 includes a liquid crystal material 400 disposed in the range of the display region 10 , and the slit 300 formed by the photoresist spacer 30 can help the liquid crystal material 400 . The edge light-shielding region 21 formed by the edge light-shielding layer 20 is diffused by the capillary phenomenon, thereby effectively preventing the liquid crystal material 400 from generating bubbles at the edge of the display region 10 due to poor diffusion, or reducing the size of the bubble as much as possible. So that the bubbles are at least not extended to the display area 10.

As shown in FIG. 4, in the embodiment, the liquid crystal panel may be a thin film transistor liquid crystal display (TFT LCD) including the first substrate 50, the second substrate 60, the transparent conductive layer 72, and the alignment film 73. The sheet substrate 70 and the sealing material 80; the second substrate 60 is disposed opposite to the first substrate 50 and overlaps the display area 10, and the second substrate 60 may be a thin film transistor substrate including a pixel electrode layer 61. And the alignment film 62; the sealing material 80 is attached to the first substrate 50 and the second substrate 60 around the display area 10; the color filter 70 and the first substrate in this embodiment 50 constitutes a color filter substrate, wherein the color filter 70 is formed on the bottom surface of the first substrate 50 to face the second substrate 60. (The color filter 70 may also be directly formed on the thin film transistor substrate by using a COA technology (Color Filter on Array).) The color filter 70 may include the plurality of color filter units 700. And a display area light shielding layer 701 and the edge light shielding layer 20. The color filter unit 700, the display area light shielding layer 701, the edge light shielding layer 20, the transparent conductive layer 72, and the alignment film 73 are sequentially formed on the first substrate 50. As further shown in FIG. 5, the color filter 70 may further include a protective layer 71 formed and covering the color filter unit 700, the display area light shielding layer 701, and the edge. The light shielding layer 20 is disposed on the light shielding layer 20 to planarize the transparent conductive layer 72. The liquid crystal layer 40 is disposed between the first substrate 50, the second substrate 60, and the sealing material 80. The photoresist spacer 30 is also disposed between the first substrate 50 and the second substrate 60. And it may be formed on the transparent conductive layer 72. The display area light shielding layer 701 is disposed integrally with the edge light shielding layer 20 in the range of the display area 10, and the two are basically different position structures belonging to the same light shielding layer. The display area light shielding layer 701 is generally in the form of a matrix structure, which may be connected to the edge light shielding layer 20 in a horizontal or vertical extending direction.

The shape of the photoresist spacer 30 is not limited to the continuous straight strip shape shown in FIG. 3. For example, as shown in FIG. 6, FIG. 6 is a second embodiment of the photoresist spacer 30. The schematic diagram is different from the first embodiment in that each of the photoresist spacers 30 includes a plurality of longer segments 30A and a plurality of shorter segments 30B, and the longer segments 30A are discontinuous from the shorter segments 30B. The alternating intervals are arranged in strips.

As shown in FIG. 7, FIG. 7 is a schematic view of a third embodiment of the photoresist spacer 30, which differs from the first and second embodiments in that each of the photoresist spacers 30 includes a plurality of the same The segment 30C of the length, the plurality of segments 30C are arranged in a strip shape at discrete intervals.

In summary, the liquid crystal panel of the present invention mainly disposes a plurality of photoresist spacers 30 on the peripheral edges of the display area 10, and causes each photoresist spacer 30 to extend to the edge around the display area 10. The layer 20 is formed in the edge shading area 21. The photoresist spacers 30 extend along the display area light shielding layer 701 to the edge light shielding layer 20 in the extending direction of the edge light shielding layer 20, and each photoresist spacer 30 is adjacent to the photoresist. The material 30 is spaced apart to form a slit 300, and the liquid crystal material 400 located in the display area 10 is diffused and flowed toward the edge light-shielding region 21 by capillary action, thereby avoiding generation of liquid crystal bubbles and avoiding The liquid crystal panel is scrapped due to the generation of liquid crystal bubbles, and the yield of the liquid crystal panel is relatively improved. Furthermore, an outer end portion of the photoresist spacer 30 preferably maintains a predetermined small pitch with the sealing member 80, that is, the outer end portion of the photoresist spacer 30 preferably does not contact the sealing member 80. In order to enable the two adjacent slits 300 to communicate, the capillary diffusion flow of the liquid crystal material 400 is promoted.

The present invention has been described by the above related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. Conversely, Modifications and equivalent arrangements are intended to be included within the scope of the invention.

Claims

Rights request

A color filter substrate, comprising: a substrate, a plurality of color filter units, a display area light shielding layer, and an edge light shielding layer, wherein the color filter unit, the display area light shielding layer, and the The edge light shielding layer and a transparent conductive layer are sequentially formed on the substrate, and the light shielding layer of the display area is connected to the edge light shielding layer along an extending direction, and the edge light shielding layer surrounds a display area of a liquid crystal panel. Forming an edge light-shielding area corresponding to the periphery of the display area; wherein the color filter substrate further comprises a plurality of photoresist spacers formed on the transparent conductive layer and disposed on the periphery of the display area, And extending along the display area light shielding layer to the edge light shielding layer formed by the edge light shielding layer, and the length of each photoresist spacer distributed in the display area is less than or equal to 30 mm. The length of the light-shielding region is less than or equal to 20 mm, and each of the photoresist spacers is spaced apart from the adjacent photoresist spacer to form a slit. The liquid crystal material in the range of the display region diffuses and flows from the slit to the edge light shielding region by capillary action.

A color filter substrate, comprising: a substrate, a plurality of color filter units, a display area light shielding layer, and an edge light shielding layer, wherein the color filter unit, the display area light shielding layer, and the The edge light shielding layer and a transparent conductive layer are sequentially formed on the substrate, and the edge light shielding layer surrounds a display area of a liquid crystal panel to form an edge light shielding area corresponding to the periphery of the display area; wherein the color The filter substrate further includes a plurality of photoresist spacers, which are formed on the transparent conductive layer and disposed on the peripheral edges of the display region, and extend to the edge light-shielding region formed by the edge light shielding layer. The photoresist spacer is spaced apart from the adjacent photoresist spacer to form a slit, and the liquid crystal material in the display region is diffused and flows from the slit to the edge light shielding region by capillary phenomenon.

The color filter substrate according to claim 2, wherein: the display area light shielding layer is connected to the edge light shielding layer along an extending direction, and the photoresist spacer material is shielded from the display area The layer extends in a direction in which the edge light shielding layer extends to the edge light shielding region.

The color filter substrate according to claim 2, wherein each of the photoresist spacers has an elongated shape.

5. The color filter substrate according to claim 2, wherein: each of said photoresist spacers comprises a plurality of longer segments and a plurality of shorter segments, said longer segments and said shorter segments The segments are alternately arranged in a strip shape.

The color filter substrate according to claim 2, wherein each of the photoresist spacers comprises a plurality of segments of equal length, and the plurality of segments are arranged in an elongated strip shape.

7. The color filter substrate according to claim 2, wherein: each of the photoresist spacers has a length distributed in the display area of less than or equal to 30 mm; and a length distributed in the edge shading area is less than or Equal to 20 mm.

A liquid crystal panel, characterized in that: the liquid crystal panel comprises:

a display area;

The liquid crystal panel according to claim 8, wherein: the liquid crystal panel comprises a first substrate, a second substrate and a sealing material, and the second substrate is disposed opposite to the first substrate; The sealing material is attached to the first substrate and the second substrate around the display area; the liquid crystal layer is disposed between the first substrate, the second substrate and the sealing material; The plurality of photoresist spacers are disposed between the first substrate and the second substrate.

10. The liquid crystal panel according to claim 9, wherein: the second substrate is a film a transistor substrate; the liquid crystal panel includes a color filter, the color filter and the first substrate form a color filter substrate, wherein the color filter is formed on a bottom surface of the first substrate And facing the second substrate.

The liquid crystal panel according to claim 10, wherein: the color filter comprises the edge light shielding layer, and further comprises a display area light shielding layer, wherein the display area light shielding layer is disposed on the display The area is within the range and is integrated with the edge light shielding layer.

The liquid crystal panel according to claim 11, wherein: the display area light shielding layer is connected to the edge light shielding layer along an extending direction, and the photoresist spacer is along the display area light shielding layer The extending direction of the edge light shielding layer extends to the edge light shielding region.

The liquid crystal panel according to claim 9, wherein: the second substrate is a thin film transistor substrate, the liquid crystal panel comprises a color filter, and the color filter is formed on the thin film transistor On the substrate.

The liquid crystal panel according to claim 13, wherein: the color filter comprises the edge light shielding layer, and further comprises a display area light shielding layer, wherein the display area light shielding layer is disposed on the display The area is within the range and is integrated with the edge light shielding layer.

The liquid crystal panel according to claim 14, wherein: the display area light shielding layer is connected to the edge light shielding layer along an extending direction, and the photoresist spacer is along the display area light shielding layer The extending direction of the edge light shielding layer extends to the edge light shielding region.

16. The liquid crystal panel according to claim 9, wherein: an outer end portion of the photoresist spacer is spaced apart from the sealing material.

17. The liquid crystal panel according to claim 8, wherein each of the photoresist spacers has a strip shape.

18. The liquid crystal panel according to claim 8, wherein: each of said photoresist spacers comprises a plurality of longer segments and a plurality of shorter segments, said longer segments being alternately spaced from said shorter segments Arranged in a long strip.

19. The liquid crystal panel according to claim 8, wherein each of the photoresist spacers comprises a plurality of segments of equal length, and the plurality of segments are arranged in an elongated strip shape.

The liquid crystal panel according to claim 8, wherein each of the photoresist spacers has a length of less than or equal to 30 mm distributed in the display region; and a length distributed in the edge shading region is less than or equal to 20 mm.