CN111190311A

CN111190311A - Display panel

Info

Publication number: CN111190311A
Application number: CN202010015729.1A
Authority: CN
Inventors: 严允晟; 刘菁
Original assignee: TCL China Star Optoelectronics Technology Co Ltd
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-05-22
Also published as: WO2021138948A1

Abstract

The application provides a display panel, which comprises a first substrate, a second substrate and a liquid crystal layer; a black matrix is arranged on one side of the second substrate facing the first substrate; a spacer layer is arranged on one side of the first substrate facing the second substrate; the spacer layer comprises a plurality of first spacers and second spacers; the first spacer and the second spacer are relatively positioned below the black matrix, at least the first spacer and the black matrix are arranged in a staggered mode, and the first spacer and the black matrix are in butt joint to support the first substrate and the second substrate. This application adopts the mode of shock insulator and black matrix butt joint to support first base plate and second base plate among the display panel, can effectively reduce shock insulator pressurized displacement, avoids simultaneously to join in marriage the membrane fish tail, prevents that dark state "spot light leak" phenomenon from taking place.

Description

Display panel

Technical Field

The application relates to the technical field of display, in particular to a display panel.

Background

A thin film transistor liquid crystal display (TFT-LCD) is a device for displaying images by controlling the toppling state of liquid crystal pixel points between two parallel glass plates by a thin film transistor to generate light shading and light transmission effects. In order to prevent poor dark state display of the TFT-LCD, spacers are required to support the upper and lower glass plates and to maintain uniformity of the thickness of the liquid crystal.

The spacer is usually two kinds of elastic columnar structures with different heights, the main spacer with the height slightly larger than the thickness of the liquid crystal box is used, and the auxiliary spacer with the height smaller than the thickness of the liquid crystal box is used.

However, under the action of external pressure, the conventional spacer is liable to slide, scratch the alignment film in contact with the spacer, affect the alignment of liquid crystal, and cause serious consequences such as "speckle light leakage" in a dark state. In order to avoid light leakage, a black matrix is usually added at the position of the spacer to block light. However, when the distance of the spacer is beyond the black matrix shading area, the phenomenon of "spot light leakage" is still generated.

Disclosure of Invention

The application provides a display panel to solve the phenomenon of spot light leakage generated in the prior art.

In order to solve the above problems, the technical solution provided by the present application is as follows:

the application provides a display panel, including:

the liquid crystal display panel comprises a first substrate, a second substrate arranged opposite to the first substrate, and a liquid crystal layer positioned between the first substrate and the second substrate;

a black matrix is arranged on one side, facing the first substrate, of the second substrate;

a spacer layer is arranged on one side, facing the second substrate, of the first substrate;

the spacer layer comprises a plurality of first spacers and second spacers;

the first spacer and the second spacer are relatively positioned below the black matrix, at least the first spacer and the black matrix are arranged in a staggered mode, and the first spacer and the black matrix are in butt joint to support the first substrate and the second substrate.

In the display panel of the present application, the thickness of the first spacer is greater than or equal to the thickness of the second spacer.

In the display panel of the present application, the first spacer and the second spacer are parallel to the cross-sectional shape in the display panel direction is rectangular, trapezoidal, rhombic, and elliptical.

In the display panel, a thin film transistor array layer, a color resistance layer and a first alignment film are sequentially arranged on a first substrate, and a first spacer and a second spacer are positioned on the first alignment film;

the second substrate is provided with a common electrode and a second alignment film in sequence on one surface of the black matrix facing the first substrate, and the first spacer is in contact with the black matrix through the second alignment film and the common electrode.

In the display panel, an included angle formed by the first spacer and the black matrix ranges from 10 degrees to 90 degrees.

In the display panel of this application, first shock insulator sets up along first direction, the black matrix sets up along the second direction, first direction with the second direction is perpendicular.

In the display panel of the present application, the second spacer is disposed along the first direction or the second direction, or the second spacer is disposed between the first direction and the second direction.

In the display panel of the present application, the sectional shape of the black matrix in a direction parallel to the display panel is rectangular, rhombic, and elliptical.

In the display panel of the application, the cross-sectional shape of the black matrix in the direction parallel to the display panel is a cross structure.

In the display panel of the present application, a projection of the black matrix on the first substrate covers a projection of the first spacer on the first substrate.

Has the advantages that: the rectangular spacer is butted with the rectangular black matrix to support the first substrate and the second substrate, and the rectangular spacer is larger in cross section than the traditional columnar spacer, so that the bending deformation can be effectively resisted, the risk of scratching the alignment film due to movement under pressure is reduced, and the problem of spot light leakage is avoided; meanwhile, the material of the spacer has elasticity, so that the compression rate in the direction vertical to the substrate can be ensured; the structure hardness of the cuboid black matrix and the public electrode covered on the surface of the substrate is higher, and the spacer cannot move under pressure; in addition, the black matrix in the application can be manufactured by using the original photomask, and the additional cost is not increased.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a display panel according to the present application;

FIG. 2 is a cross-sectional view of a first spacer and a second spacer of a display panel of the present application in a direction parallel to the display panel;

FIG. 3 is a first cross-sectional view of a black matrix of a display panel according to the present invention, taken in a direction parallel to the display panel;

FIG. 4 is a side view of a display panel according to the present application;

FIG. 5 is a first top view of a display panel of the present application on a first substrate;

FIG. 6 is a second top view of the display panel of the present application on the first substrate;

FIG. 7 is a second cross-sectional view of a black matrix of a display panel of the present application in a direction parallel to the display panel;

fig. 8 is a schematic view of a display panel structure according to an embodiment of the present disclosure;

fig. 9 is a first cross-sectional view of a first spacer, a second spacer and a black matrix in a display panel according to an embodiment of the disclosure in a direction parallel to the display panel;

fig. 10 is a second cross-sectional view of the first spacer, the second spacer and the black matrix in the display panel according to the embodiment of the disclosure in a direction parallel to the display panel;

fig. 11 is a third cross-sectional view of the first spacer, the second spacer and the black matrix in the display panel according to the embodiment of the disclosure in a direction parallel to the display panel.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the prior art, in order to prevent poor dark state display of the TFT-LCD, spacers are needed to support the upper glass plate and the lower glass plate, so that the uniformity of the thickness of the liquid crystal is kept. The spacer is usually two kinds of elastic columnar structures with different heights, the main spacer with the height slightly larger than the thickness of the liquid crystal box is used, and the auxiliary spacer with the height smaller than the thickness of the liquid crystal box is used. However, under the action of external pressure, the conventional spacer is liable to slide, scratch the alignment film in contact with the spacer, affect the alignment of liquid crystal, and cause serious consequences such as "speckle light leakage" in a dark state. In order to avoid light leakage, a black matrix is usually added at the position of the spacer to shield, but the sliding distance of the spacer usually exceeds the shading area of the black matrix, and the phenomenon of 'spot light leakage' still often occurs.

Please refer to fig. 1, a structural diagram of a display panel according to the present application.

In the present application, the display panel includes a first substrate 100, a second substrate 200 disposed opposite to the first substrate 100, and a liquid crystal layer 300 between the first substrate 100 and the second substrate 200.

A black matrix 201 is disposed on a side of the second substrate 200 facing the first substrate 100.

A spacer layer 400 is disposed on a side of the first substrate 100 facing the second substrate 200.

The spacer layer 400 includes a number of first spacers 401 and second spacers 402.

The first spacer 401 and the second spacer 402 are relatively located below the black matrix 201, at least the first spacer 401 and the black matrix 402 are arranged in a staggered manner, and the first spacer 401 and the black matrix 201 are in butt joint to support the first substrate 100 and the second substrate 200.

In this application, the material of the first spacer 401 and the second spacer 402 may be an elastic material.

In the present application, the thickness of the first spacer 401 is greater than or equal to the thickness of the second spacer 402.

Further, the thickness of the first spacer 401 is greater than that of the second spacer 402.

In the present application, the first spacers 401 and the second spacers 402 are disposed at different heights to uniformly act on the flowing liquid crystal between the first substrate 100 and the second substrate 200.

Referring to fig. 2, a cross-sectional view of a first spacer and a second spacer of a display panel of the present application in a direction parallel to the display panel is shown.

In the present application, the cross-sectional shapes of the first spacer 401 and the second spacer 402 in the direction parallel to the display panel include, but are not limited to, a rectangle, a trapezoid, a diamond, a circle, and an ellipse.

Further, the cross-sectional shapes of the first spacer 401 and the second spacer 402 in the direction parallel to the display panel are rectangular, and the structures of the first spacer 401 and the second spacer 402 are both rectangular structures.

In this application, first shock insulator 401 adopts cuboid structural design, can increase first shock insulator 401 with black matrix 201's area of contact has effectively reduced first shock insulator 401 takes place the risk of bending deformation to guarantee the compression ratio of perpendicular glass substrate direction.

Referring to fig. 3, a first cross-sectional view of a black matrix of a display panel of the present application in a direction parallel to the display panel is shown.

In the present application, the cross-sectional shape of the black matrix 201 in the direction parallel to the display panel includes, but is not limited to, a rectangle, a diamond, and an ellipse.

Further, the cross-sectional shape of the black matrix 201 in the direction parallel to the display panel is rectangular, and the black matrix 201 has a rectangular structure.

In the present application, the cuboid black matrix 201 and the cuboid first spacer 401 are supported in a butt joint manner, so that the compression displacement of the first spacer 401 can be effectively reduced, and the compression rate of the first spacer 401 perpendicular to the first substrate 100 and the second substrate 200 can be ensured to be stable.

Referring to fig. 4, a side view of a display panel according to the present application is shown.

In the present application, the angle between the first spacer 401 and the black matrix 201 is in the range of 10 ° to 90 °.

Further, the first spacer 401 is disposed along a first direction, and the black matrix 201 is disposed along a second direction, where the first direction is perpendicular to the second direction.

Referring to fig. 5, a first top view on a first substrate of a display panel of the present application is shown.

In the present application, the second spacer 402 is disposed along the first direction or the second direction, or the second spacer 402 is disposed between the first direction and the second direction.

Further, the second spacers 402 are disposed along the first direction, and the second spacers 402 and the first spacers 401 are disposed on the first substrate 100 in the same direction.

Referring to fig. 6, a second top view of the display panel of the present application is shown on a first substrate.

In this application, the second spacers 402 are disposed along the second direction, and the second spacers 402 are disposed in a different direction from the first spacers 401 on the first substrate 100.

Referring to fig. 7, a second cross-sectional view of the black matrix of the display panel of the present application in a direction parallel to the display panel is shown.

In the present application, the cross-sectional shape of the black matrix 201 in the direction parallel to the display panel is a cross structure.

In the present application, the size of the black matrix 201 in the cross structure is not limited.

In this application, when the black matrix 202 is a cross-shaped structure, the first spacer 201 can be effectively prevented from sliding in the up, down, left, and right directions, thereby playing a role in fixing.

In this application, the projection of the black matrix 201 on the first substrate 100 covers the projection of the first spacer 401 on the first substrate 100.

According to the glass substrate compression molding method, the cuboid-shaped first spacer 401 is arranged on the first substrate 100, the cuboid-shaped black matrix 201 is arranged on the second substrate 200, the first spacer 401 and the black matrix 201 are in butt joint support, compression displacement of the first spacer 401 can be effectively reduced, meanwhile, due to the cuboid-shaped design, the contact area between the first spacer 401 and the black matrix 201 can be increased, the risk that the first spacer 401 is bent and deformed is effectively reduced, and therefore the compression ratio perpendicular to the glass substrate direction is guaranteed; and when the black matrix 202 is a cross-shaped structure, the first spacer 201 can be effectively prevented from sliding in the up, down, left and right directions, and the first spacer 401 can be fixed.

The technical solution of the present application will now be described with reference to specific embodiments.

Referring to fig. 8, a structure of a display panel according to an embodiment of the present disclosure is shown.

In this embodiment, the display panel is of VA type.

The first substrate 100 is an array substrate, and the second substrate 200 is a color film substrate.

A thin film transistor array layer 101, a color resist layer 102, and a first alignment film 103 are sequentially disposed on a surface of the first substrate 100 facing the second substrate 200.

The color resistance color of the color resist layer 102 may be one of red, green and blue, and the color resistance color of the color resist layer 102 is not limited herein.

The first spacer 401 and the second spacer 402 are located on the first alignment film 103.

The second substrate 200 is provided with a common electrode 202 and a second alignment film 203 in sequence on one surface of the black matrix 201 facing the first substrate 100.

The first spacer 401 is in contact with the black matrix 201 through the second alignment film 203 and the common electrode 202.

In the present embodiment, the cross-sectional shape of the black matrix 201 in the direction parallel to the display panel includes, but is not limited to, a rectangle, a diamond, and an ellipse.

The cross-sectional shapes of the first spacer 401 and the second spacer 402 in the direction parallel to the display panel include, but are not limited to, a rectangle, a trapezoid, a diamond, an ellipse, and a circle.

Referring to fig. 9, a first cross-sectional view of a first spacer, a second spacer and a black matrix of a display panel in a direction parallel to the display panel is shown.

It should be noted that, in the present embodiment, the lengths and widths of the first spacer 401, the second spacer 402, and the black matrix 201 are only used for illustration and are not limited herein.

In this embodiment, the cross-sectional shape of the black matrix 201 in the direction parallel to the display panel is rectangular, and the black matrix 201 has a rectangular parallelepiped structure.

In this embodiment, the cross-sectional shapes of the first spacer 401 and the second spacer 402 in the direction parallel to the display panel are rectangular, and both the first spacer 401 and the second spacer 402 are rectangular structures.

In this embodiment, the length of the black matrix 201 is 20um, and the width thereof is 80 um.

The length of first shock insulator 401 is 80um, and the width is 20 um.

The length of second shock insulator 402 is 80um, and the width is 20 um.

In this embodiment, the angle between the first spacer 401 and the black matrix 202 is in the range of 10 ° to 90 °.

In this embodiment, the second spacer 402 is disposed along the first direction or the second direction, or the second spacer 402 is disposed between the first direction and the second direction.

Referring to fig. 10, a second cross-sectional view of the first spacer, the second spacer and the black matrix of the display panel in the direction parallel to the display panel is shown.

In this embodiment, the cross sections of the first spacer 401, the second spacer 402, and the black matrix 201 in the direction parallel to the display panel are similar to/the same as the first cross sections of the first spacer 401, the second spacer 402, and the black matrix 201 in the above embodiment in the direction parallel to the display panel, and please refer to the description of the display panel in the above application for details, which is not repeated herein, and the difference between the two is only that:

in this embodiment, the second spacers 402 are disposed along a second direction, and the second spacers 402 are disposed on the first substrate 100 in a direction different from that of the first spacers 401.

The length of first shock insulator 401 is 80um, and the width is 20 um.

The length of second shock insulator 402 is 20um, and the width is 80 um.

Referring to fig. 11, a third cross-sectional view of the first spacer, the second spacer and the black matrix in the display panel in the direction parallel to the display panel is shown.

In this embodiment, the cross sections of the first spacer 401, the second spacer 402, and the black matrix 201 in the direction parallel to the display panel are similar to/the same as the first cross sections of the first spacer 401, the second spacer 402, and the black matrix 201 in the above embodiment in the direction parallel to the display panel, and please refer to the description of the display panel in the above application, which is not repeated herein, and the difference between the two is that:

in this embodiment, the cross-sectional shape of the black matrix 201 in the direction parallel to the display panel is a cross structure.

The projection of the black matrix 201 on the first substrate 100 covers the projection of the first spacer 401 on the first substrate 100.

In this embodiment, the size of the black matrix 201 in the cross structure is not limited.

In this embodiment, the second spacer 402 can also be disposed along a second direction, and the disposing direction of the second spacer 402 and the disposing direction of the first spacer 401 on the first substrate 100 are different, which is not described herein again.

In this embodiment, a first rectangular parallelepiped spacer 401 is disposed on the first substrate 100, and a rectangular parallelepiped black matrix 201 is disposed on the second substrate 200, and the first rectangular parallelepiped spacer 401 and the black matrix 201 are supported in an abutting manner, so that the compression displacement of the first rectangular parallelepiped spacer 401 is effectively reduced, and the first alignment film 103 and the second alignment film 203 are prevented from being scratched, thereby preventing the occurrence of a dark-state "speckle light leakage" phenomenon; and when the black matrix 201 is a cross structure, the first spacer 401 can be effectively prevented from sliding in the up, down, left and right directions, and the first spacer 401 can be fixed.

The application provides a display panel, which comprises a first substrate, a second substrate arranged opposite to the first substrate, and a liquid crystal layer positioned between the first substrate and the second substrate; a black matrix is arranged on one side, facing the first substrate, of the second substrate; a spacer layer is arranged on one side, facing the second substrate, of the first substrate; the spacer layer comprises a plurality of first spacers and second spacers; the first spacer and the second spacer are relatively positioned below the black matrix, at least the first spacer and the black matrix are arranged in a staggered mode, and the first spacer and the black matrix are in butt joint to support the first substrate and the second substrate.

According to the alignment film structure, the cuboid-shaped first spacer is arranged on the first substrate, the cuboid-shaped black matrix is arranged on the second substrate, and the first spacer is in butt joint with the black matrix for supporting, so that the compression displacement of the first spacer is effectively reduced, the alignment film is prevented from being scratched, and the phenomenon of 'spot light leakage' in a dark state is prevented; due to the cuboid design, the contact area between the first spacer and the black matrix can be increased, the risk of bending deformation of the first spacer is effectively reduced, and meanwhile, the compression rate in the direction perpendicular to the glass substrate is ensured; and when the black matrix is the cross structure, can effectually prevent the slip of first shock insulator in upper and lower, left and right each direction, play the effect of fixed first shock insulator, the black matrix in this application can use original light shield to make in addition, does not increase extra cost.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display panel provided by the embodiment of the present application is described in detail above, and a specific example is applied to illustrate the principle and the implementation manner of the present application, and the description of the embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A display panel, comprising:

the spacer layer comprises a plurality of first spacers and second spacers;

2. The display panel of claim 1, wherein a thickness of the first spacer is greater than or equal to a thickness of the second spacer.

3. The display panel according to claim 1, wherein the first spacer and the second spacer have a rectangular, trapezoidal, rhombic, and elliptical cross-sectional shape in a direction parallel to the display panel.

4. The display panel according to claim 1, wherein a thin film transistor array layer, a color resist layer, and a first alignment film are sequentially disposed on the first substrate, and the first spacer and the second spacer are disposed on the first alignment film;

5. The display panel according to claim 1 or 4, wherein the angle between the first spacer and the black matrix is in a range of 10 ° to 90 °.

6. The display panel according to claim 5, wherein the first spacers are disposed in a first direction, the black matrix is disposed in a second direction, and the first direction and the second direction are perpendicular.

7. The display panel according to claim 6, wherein the second spacer is disposed along the first direction or the second direction, or the second spacer is disposed between the first direction and the second direction.

8. The display panel according to claim 1, wherein a cross-sectional shape of the black matrix in a direction parallel to the display panel is a rectangle, a diamond, and an ellipse.

9. The display panel according to claim 1, wherein a cross-sectional shape of the black matrix in a direction parallel to the display panel is a cross structure.

10. The display panel of claim 9, wherein a projection of the black matrix on the first substrate covers a projection of the first spacer on the first substrate.