CN110794623B

CN110794623B - Display panel and display device

Info

Publication number: CN110794623B
Application number: CN201911110551.2A
Authority: CN
Inventors: 邵冬梅; 陈孝贤
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2022-07-29
Anticipated expiration: 2039-11-14
Also published as: CN110794623A

Abstract

The invention discloses a display panel and a display device. According to the invention, the volume of the first spacer is increased on the side of the color film substrate, the color resistance layer is arranged on the side of the array substrate, and the auxiliary spacers with higher density are arranged on the gate lines and the data lines, so that the surface pressure resistance of the display panel is improved, and the liquid crystal consumption is reduced.

Description

Display panel and display device

Technical Field

The invention belongs to the technical field of display, and particularly relates to a display panel and a display device.

Background

In a TFT-LCD (Thin Film Transistor-Liquid Crystal Display), a Liquid Crystal Display panel is formed by a color filter substrate and an array substrate in a box-to-box manner, and a Liquid Crystal layer is sandwiched between the color filter substrate and the array substrate. In order to ensure the uniformity of the thickness of the liquid crystal layer, spacers are generally required.

In the current spacer design, a combination structure of a main spacer and an auxiliary spacer is usually adopted, and the main spacer is mainly used for controlling the thickness of the liquid crystal layer. When the display screen is extruded, the main spacer and the auxiliary supporting spacer arranged between the array substrate and the color film substrate in the display panel can jointly play a supporting role, so that the damage of the display device is reduced.

The aperture ratio of the LCD of the liquid crystal display device is generally < 60%, and the liquid crystal having 40% of the non-aperture area does not perform a display function. Liquid crystals are expensive as an important raw material. To keep costs down, LCD manufacturing continues to expect a reduction in the amount of liquid crystal used. In addition, the LCD device designs the spacer into two heights of a main spacer and an auxiliary spacer, the main spacer plays a role of supporting the liquid crystal layer, the auxiliary spacer plays a role of supporting the surface pressure, and according to simulation analysis, the larger the area of the auxiliary spacer is, the stronger the surface pressure resistance of the liquid crystal is; the design density of the prior auxiliary shock insulator is generally less than 2%.

Therefore, how to improve the surface pressure resistance of the display panel and save the liquid crystal consumption is an important issue in the display technology.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, wherein the volume of a first spacer is increased on the side of a color film substrate, a color resistance layer is arranged on the side of an array substrate, and auxiliary spacers with higher density are arranged on a grid line and a data line, so that the surface pressure resistance of the display panel is improved, and the liquid crystal consumption is reduced.

According to an aspect of the present invention, there is provided a display panel including: the first substrate is provided with a plurality of data lines and a plurality of gate lines which are crossed in an insulating mode, at least one auxiliary spacer is arranged on the routing lines of the data lines and the gate lines, and at least one main spacer is arranged on the gate lines; the second substrate and the first substrate are arranged in a box-to-box mode, a first black matrix is arranged on the first surface of the second substrate, at least one first spacer is arranged on the first black matrix, and the first surface is close to the first substrate; and a color resistance layer is arranged on the first substrate and opposite to the first black matrix.

Further, the ratio of the line width of the at least one first spacer to the line width of the first black matrix is greater than a preset ratio.

Further, the preset ratio is 40%.

Further, the display panel further includes: the first alignment layer covers the color resistance layer; the second alignment layer covers the first spacer; the liquid crystal layer is filled between the first alignment layer and the second alignment layer; and the packaging layer is arranged between the first substrate and the second substrate, is attached to and surrounds the liquid crystal layer.

Furthermore, a second black matrix is arranged between the first substrate and the color resistance layer.

Further, the second black matrix and the first black matrix are correspondingly arranged.

Further, the height of the main spacer is greater than that of the auxiliary spacer.

Furthermore, the cross section of the auxiliary shock insulator is circular, and the longitudinal section of the auxiliary shock insulator is trapezoidal.

Further, the gradient of the trapezoid ranges from 60 ° to 90 °.

Further, the bottom of the maximum longitudinal section of the auxiliary spacer is smaller than the line widths of the data lines and the gate lines.

According to another aspect of the present invention, there is provided a display device including the above display panel.

According to the embodiment of the invention, the volume of the first spacer is increased on the side of the color film substrate, the color resistance layer is arranged on the side of the array substrate, and the auxiliary spacers with higher density are arranged on the gate lines and the data lines, so that the surface pressure resistance of the display panel is improved, and the liquid crystal consumption is reduced.

Drawings

The technical scheme and the beneficial effects of the invention are obvious through the detailed description of the specific embodiments of the invention in combination with the attached drawings.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an array substrate according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In particular embodiments, the drawings discussed below and the embodiments used to describe the principles of the present disclosure are by way of illustration only and should not be construed to limit the scope of the present disclosure. Those skilled in the art will understand that the principles of the present invention may be implemented in any suitably arranged system. Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. Further, a terminal according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements.

The terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to be limiting of the inventive concepts. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it is to be understood that terms such as "comprising," "having," and "containing" are intended to specify the presence of stated features, integers, steps, acts, or combinations thereof, as taught in the present specification, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof. Like reference symbols in the various drawings indicate like elements.

Referring to fig. 1, an embodiment of the invention provides a display panel, which includes a first substrate 10, a color barrier layer 11, a first alignment layer 12, a second black matrix 13, a second substrate 20, a first black matrix 21, a first spacer 22, a second alignment layer 23, a liquid crystal layer 30, and an encapsulation layer 40.

The first substrate 10 may be an array substrate. As shown in fig. 2, a plurality of data lines 100 and a plurality of gate lines 200 are provided on the first substrate 10 to cross each other in an insulating manner. At least one auxiliary spacer 300 is disposed on the plurality of data lines 100 and the plurality of gate lines 200 for increasing the supporting area and improving the surface pressure resistance of the display panel. The shape of the auxiliary spacer 300 is not limited in the drawing, and only represents that the position where the auxiliary spacer is disposed and the design density are high. At least one main spacer 400 is disposed on the plurality of gate lines 200 to support the array substrate. Preferably, the height of the main spacers is greater than the height of the auxiliary spacers.

In the present embodiment, the auxiliary spacer 300 and the main spacer 400 are both in the shape of a truncated cone, and the diameter of the lower surface is smaller. In other embodiments, the auxiliary spacers 300 and the main spacers 400 may have other shapes. In this embodiment, the auxiliary spacer 100 has a circular cross-section and a trapezoidal longitudinal cross-section. The gradient range of the trapezoid is 60 degrees to 90 degrees, and the design can reduce the length of the lower bottom, so that the difference value between the lower bottom and the upper bottom is smaller than 10 microns, and the lower bottom is prevented from being larger than the line widths of the data line 300 and the gate line 200, thereby shielding the opening area of the pixel unit arranged on the first substrate 10. Further, the bottom of the maximum longitudinal section of the auxiliary spacer 100 is smaller than the line widths of the data line 300 and the gate line 200. That is, the diameters of the auxiliary spacers 300 and the main spacers 400 each having a circular cross section cannot exceed the line widths of the data lines 100 and the gate lines 200 at the maximum, and are designed such that the auxiliary spacers 300 and the main spacers 400 maintain a safe distance (greater than 12 μm) from the opening area of the pixel unit. In addition, the materials of the auxiliary spacer 300 and the main spacer 400 include a high crosslinking degree monomer and a high sensitivity polyimide.

The color resistance layer 11 is disposed on the first substrate 10 and occupies a position of the liquid crystal to reduce a usage amount of the liquid crystal.

In addition, as shown in fig. 3, in another embodiment, a second black matrix 13 is disposed between the first substrate 10 and the color resist layer 11 for preventing leakage of background light, improving display contrast, thereby preventing color mixing and increasing color purity.

As shown in fig. 1, the second substrate 20 may be a color filter substrate. The second substrate 20 is provided to the cassette with the first substrate 10. A first black matrix 21 is disposed on the second substrate 20 adjacent to the first surface of the first substrate 10 to prevent leakage of background light, improve display contrast, prevent color mixing and increase color purity. Further, at least one first spacer 22 is disposed on the first black matrix 21 for occupying the position of the liquid crystal to reduce the usage amount of the liquid crystal and to support the liquid crystal.

The first black matrix 21 is disposed on the second substrate 20. Wherein the first black matrix 21 and the second black matrix 13 are correspondingly arranged.

The first spacer 22 is disposed on the first black matrix 21. The material of the first spacer 22 includes a high crosslinking degree monomer and a high sensitivity polyimide. The first spacers 22 serve to support the display panel and occupy the liquid crystal position, thereby reducing the amount of liquid crystal used. The ratio of the line width of the at least one first spacer to the line width of the first black matrix is greater than a preset ratio, so that the laying range of the first spacers 22 is enlarged, and more liquid crystal positions are occupied, the usage amount of liquid crystal can be reduced, and the surface pressure resistance of the display panel 1 is improved. The preset ratio is, for example, 40%, but is not limited thereto.

In addition, the first alignment layer 23 is disposed on the first spacer 22. The second alignment layer 12 is disposed on the color resist layer 11.

The liquid crystal layer 30 is filled between the first alignment layer 23 and the second alignment layer 12.

The sealing layer 40 is disposed between the first substrate 10 and the second substrate 20, and is attached to and surrounds the liquid crystal layer 30.

Referring to fig. 4, a display device 2 according to an embodiment of the present invention includes the display panel 1 as described above. The display device 2 may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

In the embodiment of the invention, the volume of the first spacer is increased on the side of the color film substrate, the color resistance layer is arranged on the side of the array substrate, and the auxiliary spacers with higher density are arranged on the gate lines and the data lines, so that the surface pressure resistance of the display panel is improved, and the liquid crystal consumption is reduced.

The display panel and the display device provided by the embodiment of the present invention are described in detail above, and the principle and the embodiment of the present invention are explained herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A display panel, comprising:

the first substrate is provided with a plurality of data lines and a plurality of gate lines which are crossed in an insulating mode, at least one auxiliary spacer is arranged on the routing lines of the data lines and the gate lines, and at least one main spacer is arranged on the gate lines;

the second substrate and the first substrate are arranged in a box-to-box mode, a first black matrix is arranged on the first surface of the second substrate, at least one first spacer is arranged on the first black matrix, and the first surface is close to the first substrate;

a color resistance layer is arranged on the first substrate and opposite to the first black matrix;

the first alignment layer covers the color resistance layer;

the second alignment layer covers the first spacer; and

the liquid crystal layer is filled between the first alignment layer and the second alignment layer;

the first substrate is an array substrate, the second substrate is a color film substrate, and the color resistance layer and the first spacer are used for occupying the position of liquid crystal.

2. The display panel of claim 1, wherein a ratio of a line width of the at least one first spacer to a line width of the first black matrix is greater than a predetermined ratio.

3. The display panel according to claim 2, wherein the predetermined ratio is 40%.

4. The display panel according to claim 1, wherein the display panel further comprises:

and the packaging layer is arranged between the first substrate and the second substrate, is attached to and surrounds the liquid crystal layer.

5. The display panel of claim 1, wherein a second black matrix is disposed between the first substrate and the color resist layer.

6. The display panel according to claim 5, wherein the second black matrix and the first black matrix are provided correspondingly.

7. The display panel according to claim 1, wherein the height of the main spacers is greater than the height of the auxiliary spacers.

8. The display panel according to claim 1, wherein the auxiliary spacers have a circular cross-section and a trapezoidal longitudinal cross-section.

9. The display panel of claim 8, wherein the trapezoid has a slope in a range of 60 ° to 90 °.

10. The display panel of claim 9, wherein a bottom of a maximum longitudinal section of the auxiliary spacer is smaller than line widths of the plurality of data lines and the plurality of gate lines.

11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.