WO2018228359A1

WO2018228359A1 - Display substrate, display panel and display device

Info

Publication number: WO2018228359A1
Application number: PCT/CN2018/090776
Authority: WO
Inventors: 于亚楠; 李岩锋; 方业周; 徐敬义; 赵欣; 赵艳艳
Original assignee: 京东方科技集团股份有限公司; 鄂尔多斯市源盛光电有限责任公司
Priority date: 2017-06-16
Filing date: 2018-06-12
Publication date: 2018-12-20
Also published as: CN206805091U

Abstract

Disclosed are a display substrate, a display panel and a display device. The display substrate comprises a base substrate, and a plurality of strip-shaped protrusions arranged substantively in parallel on the base substrate, wherein the orthogonal projection of the protrusions on the base substrate is located in the area of the orthogonal projection of a black matrix of a display substrate on the base substrate.

Description

Display substrate, display panel and display device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201720704400.X filed on Jun. 16, 2017, the entire content of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of display technologies, and in particular, to a display substrate, a display panel, and a display device.

Background technique

Liquid crystal display devices (LCDs) have been widely used in various fields such as homes, public places, office places, and personal electronic related products because of their low power consumption, low cost, no radiation, and easy operation. The liquid crystal display device has been developed from a Twisted Nematic (TN) liquid crystal display device which is simple in fabrication and low in cost but has a small viewing angle to a vertical alignment type (Vertical Alignment) liquid crystal display device having a wide viewing angle.

Summary of the invention

The present disclosure provides a display substrate, a display panel, and a display device.

In a first aspect, the present disclosure provides a display substrate. The display substrate includes: a substrate substrate, and a plurality of substantially parallel strip-shaped protrusions on the base substrate, an orthographic projection of the protrusion on the base substrate is located on the display A black matrix of the substrate or a black matrix of the opposite substrate opposite the display substrate is in a region of the orthographic projection on the base substrate.

Optionally, the display substrate is a thin film transistor array substrate or a color film substrate.

Optionally, the display substrate is a color film substrate and includes a color filter layer, a common electrode and an alignment film on the substrate, wherein the color filter layer is located at the common electrode and the substrate Between the substrates, the plurality of protrusions and the alignment film are located on a surface of the common electrode on a side away from the color filter layer, and the alignment film covers the plurality of protrusions At least part.

Optionally, the protrusions extend in the same direction or substantially perpendicular to each other in the extending direction of the gate lines disposed on the opposite substrate opposite to the display substrate.

Optionally, the shape of the cross section of the protrusion is a trapezoid or a triangle in a plane perpendicular to the extending direction of the protrusion, and the orthographic projection of the protrusion on the base substrate An orthographic projection of the gate line on the substrate substrate at least partially overlaps.

Optionally, the base angle of the trapezoid is 80 degrees.

Optionally, the alignment film covers at least a portion of the protrusion, and the height of the protrusion is less than or equal to a distance between the display substrate and the opposite substrate.

Optionally, the height of the protrusion is equal to the distance between the display substrate and the opposite substrate, and the alignment film covers a surface of the protrusion that is not in contact with the opposite substrate.

Optionally, the color filter layer includes a plurality of filter units and a black matrix, and the plurality of filter units are arranged in a matrix, and each of the adjacent two filter units is disposed with one of the black matrices.

Optionally, one of the black matrices exists between every two adjacent protrusions in a direction perpendicular to the direction in which the protrusions extend.

Optionally, two sub-pixels are spaced apart between two adjacent protrusions in a direction perpendicular to the extending direction of the protrusion.

Optionally, the material of the protrusion is an insulating material.

In a second aspect, the present disclosure provides a display panel. The display panel includes the display substrate according to the first aspect, an opposite substrate opposite to the display substrate, and a liquid crystal layer sandwiched between the display substrate and the opposite substrate.

In a third aspect, the present disclosure provides a display device. The display device includes the display panel according to the second aspect.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings to be used in the description of some embodiments of the present disclosure will be briefly described below. Obviously, the drawings in the following description are only some of the embodiments of the present disclosure, and those skilled in the art can obtain other drawings according to the drawings without any inventive labor.

1 is a perspective view of a display device provided by the present disclosure;

Figure 2 is a partial cross-sectional view of the display panel taken along line A-A of the display device shown in Figure 1;

3 is a partial cross-sectional view of a display panel in a display device provided by the present disclosure;

4 is a partial cross-sectional view of a display panel in a display device provided by the present disclosure;

Figure 5 is a partial perspective view of the display panel in the display device shown in Figure 1.

Specific example

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the present disclosure. It is apparent that the described embodiments are a part of the embodiments of the present disclosure, and not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

The related VA type liquid crystal display device has only a single domain effect, and is prone to color shift and azimuth of view, resulting in a reduced display effect.

The display substrate, the display panel and the display device provided by the present disclosure can remove the black dark line displayed in the related vertical alignment type (VA) display device, and improve the transmittance and display effect of the display device.

Please refer to FIG. 1. FIG. 1 is a perspective view of a display device provided by the present disclosure. As shown in FIG. 1 , the display device 100 includes a display panel 10 and a backlight module 20 , and the display panel 10 and the backlight module 20 are stacked to form a display module of the display device 100 to implement The display function of the display device 100. The display device 100 further includes a display area 101 and a peripheral area 102 surrounding the display area 101. The display area 101 is mainly used to implement a display output function of the display apparatus 100, and the peripheral area 102 is mainly used for Trace and so on.

Please refer to FIG. 2 at the same time. FIG. 2 is a partial cross-sectional view of the display panel taken along line A-A of the display device shown in FIG. 1. As shown in FIG. 2 , the display panel 10 includes a display substrate 11 , a counter substrate 12 , a liquid crystal layer 13 , and a bezel 14 . The display substrate 11 is disposed opposite to the opposite substrate 12, and the liquid crystal layer 13 and the plastic frame 14 are sandwiched between the display substrate 11 and the opposite substrate 12. The liquid crystal layer 13 is received in a cavity surrounded by the display substrate 11 , the opposite substrate 12 and the plastic frame 14 , and the plastic frame 14 is correspondingly located in the peripheral region 102 of the display device 100 . The display substrate 11 may be one of a thin film transistor (TFT) array substrate or a color filter substrate, and the opposite substrate 12 is the other of the thin film transistor array substrate and the color filter substrate. For example, when the display substrate 11 is a thin film transistor array substrate, the opposite substrate 12 is a color filter substrate; when the display substrate 11 is a color filter substrate, the opposite substrate 12 is a TFT array substrate.

In some embodiments of the present disclosure, when the display substrate 11 is a color filter substrate, the display substrate 11 includes a base substrate 111, a color filter layer 112, a common electrode 113, and an alignment film 114. The color filter layer 112, the common electrode 113, and the alignment film 114 are on the base substrate 111, and the color filter layer 112 is located between the base substrate 111 and the common electrode 113. The alignment film 114 is located on a side of the common electrode 113 away from the color filter layer 112.

In the present example, the display substrate 11 is a color film substrate, and the opposite substrate 12 is a thin film transistor array substrate. However, the present invention is not limited thereto. In other examples, the display substrate 11 is a thin film transistor array substrate, and the opposite substrate 12 is a color filter substrate, and is not limited thereto.

The color filter layer 112 includes a plurality of filter units 1121 and a black matrix 1122. The plurality of filter units 1121 are arranged in a matrix, and each of the adjacent two filter units 1121 is spaced apart from the black matrix 1122.

This example is described by taking the black matrix on the display substrate as an example, but is not limited thereto. In other modes, the black matrix may also be located on the opposite substrate, or the black matrix and the filter unit. The color filter layers are all located on the opposite substrate, and are not limited thereto.

The display substrate 11 further includes a plurality of protrusions 115 on the base substrate 111. The plurality of protrusions 115 are arranged substantially in parallel with each other, and the protrusions 115 extend in a strip shape. The plurality of protrusions of the "substantially parallel arrangement" referred to in the present disclosure means that the angle formed between the line in which each protrusion is located and the line in which the other protrusion is located is less than or equal to 5 degrees. Alternatively, the included angle may be 0 degrees, 1 degree, 2 degrees, 3 degrees, 4 degrees, or 5 degrees.

The shape of the cross section of the protrusion 115 in a plane perpendicular to the extending direction is trapezoidal or triangular. In some embodiments of the present disclosure, the shape of the cross section of the protrusion in a plane perpendicular to the extending direction is illustrated as a trapezoid, but is not limited thereto. In some other embodiments, the shape of the cross section of the protrusion in a plane perpendicular to the direction of extension may also be a triangle as shown in FIG. 3, or other similar shape. The base angle of the wide end of the trapezoid may be set as needed, for example, 80 degrees.

In some embodiments of the present disclosure, the protrusion 115 extends in the same direction as the gate line (not shown) in the display panel 10, and the protrusion 115 is in the The orthographic projection on the base substrate 111 at least partially overlaps the orthographic projection of the gate line on the base substrate 111, but is not limited thereto. In other examples, the extending direction of the protrusions 115 may also be substantially perpendicular to the extending direction of the gate lines of the display panel 10. For example, an angle formed between the extending direction of the protrusion 115 and the extending direction of the gate of the display substrate 10 may be between 85 degrees and 95 degrees. Alternatively, the included angle may be 90 degrees.

The protrusion 115 is in direct contact with the surface on the surface of the side of the common electrode 113 away from the color filter layer 112, and protrudes into the liquid crystal layer 13. The protrusion 115 is located between two pixels adjacent in the direction perpendicular to the extending direction of the protrusion 115, as shown in FIG. 5, and one protrusion is provided every two pixels.

The height of the protrusion 115 is less than or equal to the distance between the display substrate 11 and the opposite substrate 12. In some embodiments of the present disclosure, the alignment film 114 covering the protrusions 115 is disposed at a position of the protrusions 115. That is, the surface of the protrusion 115 is provided with the alignment film 114. Alternatively, the alignment film 114 may not cover the protrusions 115 or only cover a portion of the protrusions 115. Taking FIG. 2 as an example, the alignment film 114 may be on an end surface (not shown) of the protrusion 115 on the side close to the opposite substrate 12.

By providing the alignment film 114 covering the protrusion 115, the adjacent two pixels separated by the protrusion 115 shown in FIG. 2 have opposite preferential tilting directions, and thus the display device provided by the present disclosure can realize multi-domain display effect. .

In the present example, the height of the protrusion 115 is smaller than the distance between the display substrate 11 and the opposite substrate 12, but the present invention is not limited thereto. In other examples, the height of the protrusions 115 may also be equal to the distance between the display substrate 11 and the opposite substrate 12. At this time, both ends of the protrusion 115 are respectively supported on the display substrate 11 and the opposite substrate 12, and can serve as a support for the display panel 10, as shown in FIG. In this example, the end of the protrusion 115 that is in contact with the opposite substrate 12 may not be covered with the alignment film 114. Optionally, an end of the protrusion 115 that is in contact with the opposite substrate 12 is also covered with the alignment film 114. That is, a portion of the alignment protrusion 114 of the alignment film 114 is in direct contact with the opposite substrate 12.

One end of the protrusion 115 is located on a side of the common electrode 113 away from the color filter layer 112, and the other end of the protrusion 115 extends into the liquid crystal layer 13, that is, One end of the protrusion 115 is located on the display substrate 11, and the other end extends into the liquid crystal layer 13.

The example shown in FIG. 2 is described by taking the case where one end of the protrusion 115 is located on the display substrate 11 and the other end is inserted into the liquid crystal layer 13, but is not limited thereto. In other examples, the narrow end of the protrusion 115 may be located on the display substrate 11 , and the other end of the protrusion may protrude into the liquid crystal layer 13 , and is not limited thereto.

The position of the protrusion 115 is corresponding to the position of the black matrix 1122, and the protrusion 115 is correspondingly located below the black matrix 1122, and the protrusion 115 is on the base substrate 111. The upper orthographic projection is located in the area of the orthographic projection of the black matrix 1122 on the base substrate 111. That is, the orthographic projection of the protrusion 115 on the base substrate 111 is less than or equal to the orthographic projection of the black matrix 1122 on the base substrate 111.

Optionally, the protrusions 115 are transparent insulating materials (such as silicon dioxide) or opaque insulating materials (such as black matrix (BM)). Insulating materials that can be used to form the bumps are known to those skilled in the art, and the disclosure will not be repeatedly described herein.

Please refer to FIG. 5 at the same time. FIG. 5 is a partial perspective view of the display panel in the display device shown in FIG. 1. As shown in FIG. 5, the display panel 10 includes a plurality of sub-pixels 15 arranged in a matrix, and adjacent three sub-pixels 15 in the same row constitute one pixel unit, in the direction of extension of the protrusion 115. In the vertical direction, two adjacent sub-pixels are spaced apart between two adjacent protrusions 115. Thus, when the display is performed, the black line formed by the protrusion 115 can fall on the black matrix between the two pixels, and is blocked by the black matrix, so that there is no black line on the display panel, thereby avoiding display. The appearance of dark areas.

Some embodiments of the present disclosure provide a display substrate, a display panel, and a display device, a plurality of substantially parallel-arranged protrusions on a substrate substrate, and an orthographic projection of the protrusions on the substrate substrate is located The black matrix of the display panel is in the area of the orthographic projection on the base substrate. In this way, not only the liquid crystal molecules in the display device can have different deflection directions, but also a multi-domain display effect can be formed, the problem of color shift and viewing angle asymmetry can be avoided, and black dark lines do not appear in the display area of the display device, and the display can be improved. Transmittance and picture quality.

The above description is only a specific example of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure. It is intended to be covered by the scope of the present disclosure. Therefore, the scope of protection of the disclosure should be determined by the scope of the claims.

Claims

A display substrate comprising:

Substrate substrate, and

a plurality of substantially parallel strip-shaped protrusions on the base substrate, an orthographic projection of the protrusions on the base substrate is located on a black matrix of the display substrate or with the display substrate The black matrix of the opposite counter substrate is in the area of the orthographic projection on the base substrate.
The display substrate according to claim 1, wherein the display substrate is a thin film transistor array substrate or a color film substrate.
The display substrate according to claim 2, wherein the display substrate is a color filter substrate and includes a color filter layer, a common electrode, and an alignment film on the substrate, wherein the color filter layer is located Between the common electrode and the base substrate, the plurality of protrusions and the alignment film are located on a surface of a side of the common electrode remote from the color filter layer, and the alignment film covers At least a portion of the plurality of protrusions.
The display substrate according to claim 3, wherein the protrusions extend in the same direction or substantially perpendicular to each other in the extending direction of the gate lines on the opposite substrate opposite to the display substrate.
The display substrate according to claim 3 or 4, wherein a shape of a cross section of the protrusion is a trapezoid or a triangle in a plane perpendicular to an extending direction of the protrusion, and

An orthographic projection of the bump on the base substrate at least partially overlaps an orthographic projection of the gate line on the base substrate.
The display substrate according to claim 5, wherein a bottom angle of the trapezoid is 80 degrees.
The display substrate according to claim 4, wherein the alignment film covers at least a portion of the protrusion, and a height of the protrusion is less than or equal to between the display substrate and the opposite substrate distance.
The display substrate according to claim 7, wherein a height of the protrusion is equal to a distance between the display substrate and the opposite substrate, and the alignment film covers the protrusion without the The surface that is in contact with the substrate.
The display substrate according to any one of claims 3 to 8, wherein the color filter layer comprises a plurality of filter units and a black matrix, the plurality of filter units being arranged in a matrix, adjacent to each of the two The filter units are spaced apart by one of the black matrices.
The display substrate according to any one of claims 3 to 9, wherein, in the direction perpendicular to the extending direction of the protrusion, one black is present between every two adjacent protrusions matrix.
The display substrate according to any one of claims 3 to 10, wherein two adjacent ones of the protrusions are spaced apart in a direction perpendicular to an extending direction of the protrusions Pixel.
The display substrate according to any one of claims 1 to 11, wherein the material of the protrusion is an insulating material.
A display panel comprising:

A display substrate according to any one of claims 1 to 12;

An opposite substrate opposite the display substrate;

a liquid crystal layer sandwiched between the display substrate and the opposite substrate.
A display device comprising:

A display panel according to claim 13.