WO2020103328A1

WO2020103328A1 - Display panel and display apparatus

Info

Publication number: WO2020103328A1
Application number: PCT/CN2019/072581
Authority: WO
Inventors: 何梓杰; 朱清永
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2018-11-22
Filing date: 2019-01-21
Publication date: 2020-05-28
Also published as: CN109407414A

Abstract

Disclosed are a display panel (10) and a display apparatus. The display panel (10) comprises: an array substrate (101), a colour film substrate (102) and a frame sealant (103), wherein the frame sealant (103) is mixed with metal balls (1031); the array substrate (101) comprises a display area (1011), a first area (1012) and a second area (1013); the array substrate (101) is provided, on the first area (1012), with a first pad (121) for raising the first area (1012); the frame sealant (103) covers the first area (1012) and the second area (1013); the first area (1012) is electrically connected to the colour film substrate (102) via the metal balls (1031); and the second area (1013) is insulated from the colour film substrate (102).

Description

Display panel and display device

Technical field

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

Background technique

In the field of flat panel displays, thin film transistor liquid crystal displays have gradually become mainstream products in the field of flat panel displays due to their advantages of light weight, thin thickness, no radiation, and low power consumption. In order to further improve the display quality and reliability of the LCD, various new production processes, new materials and new structures have been successfully developed, including the optimization of the frame glue structure. The frame glue in the LCD panel is generally coated on the array substrate Or around the color filter substrate, the sealant mainly plays two roles, one is to prevent the leakage of liquid crystal, and the other is to play a certain supporting role, so as to maintain the thickness of the liquid crystal display panel box.

In recent years, in order to reduce the contact resistance between the common electrode on the color filter substrate and the array substrate, a metal ball with good conductivity is widely used; the use of gold balls not only significantly reduces the common electrode on the color filter substrate and the array substrate Contact resistance, but also significantly improved the uniformity of contact resistance across the panel, reducing the occurrence of green and other undesirable phenomena.

At present, the gold balls are all doped in the sealant to achieve the effect of improving the display quality of the liquid crystal display. Since the frame glue is coated around the array substrate or color filter substrate, the metal balls are inevitably distributed around the array substrate or color filter substrate. In this way, sufficient space needs to be reserved for the display panel so that the frame glue can not avoid It is expected that the signal that is conducted to the color filter substrate will make it difficult to further narrow the width of the frame.

technical problem

The purpose of the embodiments of the present application is to provide a display panel and a display device, which can solve the problem that the metal balls are distributed around the array substrate or the color filter substrate, and the display panel needs to reserve enough space to avoid the frame glue from undesired conduction The signal of the color filter substrate, which leads to the technical problem that the width of the frame is difficult to be further narrowed.

Technical solution

An embodiment of the present application provides a display panel, including: an array substrate, a color filter substrate, and a sealant for connecting the array substrate and the color filter substrate, and the sealant is doped with metal balls;

The array substrate includes a display area and a first area and a second area provided outside the display area, and the array substrate is provided on the first area with a first liner for cushioning the first area Pads so that the first area and the second area have a height difference;

The sealant is disposed around the display area and covers the first area and the second area, the first area is electrically connected to the color filter substrate through the metal ball, and the second area Insulated from the color filter substrate.

In the display panel described in this application, on the first area, the array substrate includes a first substrate, the first pad, and the first electrode that are sequentially stacked;

Wherein, the upper surface of the metal ball is in contact with the common electrode on the color filter substrate, and the lower surface of the metal ball is connected to the common electrode line on the array substrate through the first electrode.

In the display panel described in this application, the distance between the common electrode and the first electrode is less than or equal to the diameter of the metal ball.

In the display panel described in this application, the first liner is formed by color resist deposition.

In the display panel described in this application, a second gasket is further provided between the array substrate and the color filter substrate, and the second gasket is located on a side of the sealant away from the display area .

In the display panel described in this application, the second gasket has a first end portion and a second end portion disposed oppositely, the first end portion is in contact with a common electrode on the color filter substrate, the The second end is in contact with the first substrate.

In the display panel described in this application, the height of the second liner is greater than the height of the first liner and less than the sum of the height of the first liner and the diameter of the metal ball.

In the display panel described in this application, on the second area, the array substrate includes a first substrate and a second electrode that are sequentially stacked;

Wherein, the upper surface of the metal ball is insulated from the common electrode on the color filter substrate, and the lower surface of the metal ball is in contact with the second electrode.

In the display panel described in this application, the distance between the common electrode and the second electrode is greater than the diameter of the metal ball.

An embodiment of the present application further provides a display device including a display panel, the display panel including: an array substrate, a color film substrate, and a sealant for connecting the array substrate and the color film substrate, the sealant Medium doped metal balls;

In the display device according to the present application, on the first area, the array substrate includes a first substrate, the first pad, and the first electrode that are sequentially stacked;

In the display device described in this application, the distance between the common electrode and the first electrode is less than or equal to the diameter of the metal ball.

In the display device described in this application, the first liner is formed by color resist deposition.

In the display device described in this application, a second gasket is further provided between the array substrate and the color filter substrate, and the second gasket is located on a side of the sealant away from the display area .

In the display device described in this application, the second pad has a first end portion and a second end portion disposed oppositely, the first end portion is in contact with a common electrode on the color filter substrate, the The second end is in contact with the first substrate.

In the display device described in this application, the height of the second pad is greater than the height of the first pad, and is less than the sum of the height of the first pad and the diameter of the metal ball.

In the display device described in this application, on the second area, the array substrate includes a first substrate and a second electrode that are sequentially stacked;

In the display device described in this application, the distance between the common electrode and the second electrode is greater than the diameter of the metal ball.

Beneficial effect

In the display panel and the display device according to the embodiments of the present application, by providing a first pad for raising the first area on the first area of the array substrate, the first area and the second area have a height difference when the frame glue surround When the display area is set and covers the first area and the second area, the first area is electrically connected to the color filter substrate through a metal ball, and the second area is insulated from the color filter substrate, so that the display panel does not need to reserve space to avoid the frame glue Turn on the signal that does not want to lead to the color filter substrate, thereby reducing the width of the frame and increasing the screen-to-body ratio.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without paying any creative work, other drawings can be obtained based on these drawings.

1 is a schematic structural diagram of a display panel according to an embodiment of this application;

2 is a schematic cross-sectional view of the display panel shown in FIG. 1 at position A;

3 is a schematic cross-sectional view of the display panel shown in FIG. 1 at position B;

4 is another schematic structural diagram of a display panel according to an embodiment of the present application;

5 is a schematic cross-sectional view of the display panel shown in FIG. 4 along C-C1.

Embodiments of the invention

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and cannot be construed as limiting the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a limitation to this application. In addition, the terms “first” and “second” are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or integrally connected; may be mechanical, electrical, or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediary, may be the connection between two elements or the interaction of two elements relationship. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In this application, unless otherwise clearly specified and defined, the first feature "above" or "below" the second feature may include the direct contact of the first and second features, or may include the first and second features Contact not directly but through another feature between them. Moreover, the first feature is “above”, “above” and “above” the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature is "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontal than the second feature.

The following disclosure provides many different implementations or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit this application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

Please refer to FIG. 1, which is a schematic structural diagram of a display panel according to an embodiment of the present application. As shown in FIG. 1, the display panel 10 of the embodiment of the present application includes: an array substrate 101, a color filter substrate 102, and a sealant 103 for connecting the array substrate 101 and the color filter substrate 102. The sealant 103 is doped with metal balls 1031. The array substrate 101 includes a display area 1011 and a first area 1012 and a second area 1013 provided outside the display area 1011. The first area 1012 and the second area 1013 of the array substrate 101 have a height difference. The sealant 103 is disposed around the display area 1011 and covers the first area 1012 and the second area 1013. The first area 1012 is electrically connected to the color filter substrate through a metal ball 1031, and the second area 1013 is insulated from the color filter substrate 102.

Please refer to FIGS. 1 and 2. FIG. 2 is a schematic cross-sectional view of the display panel shown in FIG. 1 at position A. As shown in FIGS. 1 and 2, on the first region 1012, the array substrate includes a first substrate 111, a first spacer 121, and a first electrode 131 that are sequentially stacked. The upper surface of the metal ball 1031 is in contact with the common electrode 122 on the color filter substrate 102, and the lower surface of the metal ball 1031 is connected to the common electrode line 141 on the array substrate 101 through the first electrode 131.

In some embodiments, the distance between the common electrode 122 and the first electrode 131 is less than or equal to the diameter of the metal ball 1031. That is, in the embodiment of the present application, by setting the distance between the common electrode 122 and the first electrode 131 to be less than or equal to the diameter of the metal ball 1031, the common electrode 122 and the first electrode 131 can be electrically connected through the metal ball 1031. Furthermore, the common electrode line 141 on the array substrate 101 and the common electrode 122 on the color filter substrate 102 are electrically connected.

In some embodiments, the first liner 121 is formed by color resist deposition. That is, when forming the first liner, a color resist layer may be formed on the array substrate, and then the patterned first liner is formed by etching.

Please refer to FIGS. 1 and 3. FIG. 3 is a schematic cross-sectional view of the display panel shown in FIG. 1 at position B. As shown in FIGS. 1 and 3, on the second region 1013, the array substrate 101 includes a first substrate 111 and a second electrode 141 that are sequentially stacked. The upper surface of the metal ball 1031 is insulated from the common electrode 122 on the color filter substrate 102, and the lower surface of the metal ball 1031 is in contact with the second electrode 141. That is, in the second region 1031, there is a gap between the metal ball 1031 and the common electrode 122 on the color filter substrate 102, so that the upper surface of the metal ball 1031 is insulated from the common electrode 122 on the color filter substrate 102.

In some embodiments, the distance between the common electrode 122 and the second electrode 141 is greater than the diameter of the metal ball 1031. That is, in the embodiment of the present application, by setting the distance between the common electrode 122 and the second electrode 141 to be greater than the diameter of the metal ball 1031, the insulation of the common electrode 122 and the second electrode 141 can be ensured.

In some embodiments, please continue to refer to FIG. 2 and FIG. 3. The color filter substrate 102 includes a substrate 112 and a common electrode 122 provided on the substrate 112.

Referring to FIGS. 1, 2, and 3, in this embodiment of the present application, by setting a first pad 121 for raising the first area 1012 on the first area 1012 of the array substrate 101, the first area 1011 and the second area The area 1012 has a height difference. When the sealant 103 is disposed around the display area 1011 and covers the first area 1012 and the second area 1013, the first area 1012 is electrically connected to the color filter substrate 102 through the metal ball 1031, and the second area 1013 It is insulated from the color filter substrate 102, so that the display panel 10 does not need to reserve space so that the sealant 103 avoids signals that do not want to be conducted to the color filter substrate 102, thereby reducing the width of the bezel and increasing the screen ratio.

Please refer to FIG. 4, which is another schematic structural diagram of a display panel according to an embodiment of the present application. The difference between the display panel 20 shown in FIG. 4 and the display panel 10 shown in FIG. 1 is that the display panel 20 shown in FIG. 4 is further provided with a second spacer 104 between the array substrate 101 and the color filter substrate 102. And the second pad 104 is located on the side of the sealant 103 away from the display area 1011.

It should be noted that, since the display panel 10 shown in FIG. 1 has a difference in height between the first area 1012 and the second area 1013, part of the area of the sealant 103 cannot play a supporting role. Therefore, in the display panel 20 of the embodiment of the present application, the second pad 104 is provided between the array substrate 101 and the color filter substrate 102, so that the liquid crystal panel 20 functions through the partial area of the plastic frame 103 and the second pad 104. Support.

In some embodiments, please refer to FIG. 5, which is a schematic cross-sectional view of the display panel shown in FIG. 4 along C-C1. Referring to FIGS. 4 and 5, the second gasket 104 has a first end 1041 and a second end 1042 oppositely disposed. The first end 1041 contacts the common electrode 122 on the color filter substrate 102, and the second end The portion 1042 is in contact with the first substrate 111.

The height of the second pad 104 is greater than the height of the first pad 121, and smaller than the sum of the height of the first pad 121 and the diameter of the metal ball 1031.

The display panel of the embodiment of the present application includes: an array substrate, a color film substrate, and a frame glue, in which a metal ball is doped; the array substrate includes a display area, a first area, and a second area, and the array substrate is located on the first area A first liner for cushioning the first area is provided; the sealant covers the first area and the second area, the first area is electrically connected to the color filter substrate through a metal ball, and the second area is insulated from the color filter substrate. In the embodiment of the present application, by providing a first liner for cushioning the first area on the first area of the array substrate, the first area and the second area have a difference in height. When the sealant is disposed around the display area and covers the first area In one area and the second area, the first area is electrically connected to the color filter substrate through a metal ball, and the second area is insulated from the color filter substrate, so that the display panel does not need to reserve space so that the frame glue avoids undesirable conduction to the color filter The signal of the film substrate further reduces the width of the frame and improves the screen ratio.

An embodiment of the present application further provides a display device, which includes the display panel described in the above embodiment. For details, reference may be made to the foregoing, and details are not described herein.

The display panel and the display device provided by the embodiments of the present application have been described in detail above. Specific examples are used to explain the principle and implementation of the present application. The descriptions of the above embodiments are only used to help understand the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as a limitation of the present application.

Claims

A display panel, comprising: an array substrate, a color filter substrate, and a sealant for connecting the array substrate and the color filter substrate, and the sealant is doped with metal balls;

The array substrate includes a display area and a first area and a second area provided outside the display area, and the array substrate is provided on the first area with a first liner for cushioning the first area Pads so that the first area and the second area have a height difference;

The sealant is disposed around the display area and covers the first area and the second area, the first area is electrically connected to the color filter substrate through the metal ball, and the second area Insulated from the color filter substrate.
The display panel according to claim 1, wherein, on the first area, the array substrate includes a first substrate, the first pad, and the first electrode that are sequentially stacked;

Wherein, the upper surface of the metal ball is in contact with the common electrode on the color filter substrate, and the lower surface of the metal ball is connected to the common electrode line on the array substrate through the first electrode.
The display panel according to claim 2, wherein the distance between the common electrode and the first electrode is less than or equal to the diameter of the metal ball.
The display panel according to claim 2, wherein the first liner is formed by color resist deposition.
The display panel according to claim 2, wherein a second spacer is further provided between the array substrate and the color filter substrate, and the second spacer is located on the sealant away from the display area Side.
The display panel according to claim 5, wherein the second gasket has a first end portion and a second end portion disposed oppositely, the first end portion being in contact with a common electrode on the color filter substrate, The second end is in contact with the first substrate.
The display panel according to claim 5, wherein the height of the second liner is greater than the height of the first liner and less than the sum of the height of the first liner and the diameter of the metal ball.
The display panel according to claim 1, wherein, on the second area, the array substrate includes a first substrate and a second electrode that are sequentially stacked;

Wherein, the upper surface of the metal ball is insulated from the common electrode on the color filter substrate, and the lower surface of the metal ball is in contact with the second electrode.
The display panel of claim 8, wherein the distance between the common electrode and the second electrode is greater than the diameter of the metal ball.
A display device includes a display panel. The display panel includes: an array substrate, a color filter substrate, and a sealant for connecting the array substrate and the color filter substrate. The sealant is doped with metal balls;

The array substrate includes a display area and a first area and a second area provided outside the display area, and the array substrate is provided on the first area with a first liner for cushioning the first area Pads so that the first area and the second area have a height difference;

The sealant is disposed around the display area and covers the first area and the second area, the first area is electrically connected to the color filter substrate through the metal ball, and the second area Insulated from the color filter substrate.
The display device according to claim 10, wherein, on the first area, the array substrate includes a first substrate, the first pad, and the first electrode which are sequentially stacked;

Wherein, the upper surface of the metal ball is in contact with the common electrode on the color filter substrate, and the lower surface of the metal ball is connected to the common electrode line on the array substrate through the first electrode.
The display device according to claim 11, wherein the distance between the common electrode and the first electrode is less than or equal to the diameter of the metal ball.
The display device according to claim 11, wherein the first liner is formed by color resist deposition.
The display device according to claim 11, wherein a second spacer is further provided between the array substrate and the color filter substrate, and the second spacer is located on the sealant away from the display area Side.
The display device according to claim 14, wherein the second liner has a first end portion and a second end portion disposed oppositely, the first end portion being in contact with a common electrode on the color filter substrate, The second end is in contact with the first substrate.
The display device according to claim 14, wherein the height of the second pad is larger than the height of the first pad and smaller than the sum of the height of the first pad and the diameter of the metal ball.
The display device according to claim 10, wherein, in the second region, the array substrate includes a first substrate and a second electrode that are sequentially stacked;

Wherein, the upper surface of the metal ball is insulated from the common electrode on the color filter substrate, and the lower surface of the metal ball is in contact with the second electrode.
The display device according to claim 17, wherein the distance between the common electrode and the second electrode is greater than the diameter of the metal ball.