WO2020134938A1

WO2020134938A1 - Retaining wall structure, display panel, and display device

Info

Publication number: WO2020134938A1
Application number: PCT/CN2019/123233
Authority: WO
Inventors: 杨春辉
Original assignee: 惠科股份有限公司
Priority date: 2018-12-24
Filing date: 2019-12-05
Publication date: 2020-07-02
Also published as: CN109445198A

Abstract

Disclosed are a retaining wall structure (130), a display panel (100), and a display device (200). The retaining wall structure (130) is formed in the display panel (100). The display panel (100) is divided into a display region (110) and a non-display region (120), and comprises an alignment layer (140) at least covering the display region (110). The retaining wall structure (130) is provided in the non-display region (120), surrounds the alignment layer (140), and comprises: a main retaining wall (131); and a first sub-remaining wall (132) of which one end is connected to the main retaining wall (131), and the other end extends along the alignment layer (140).

Description

Retaining wall structure, display panel and display device

This application requires the priority of the Chinese patent application filed on December 24, 2018, with the application number CN201811581459.X and the application name of "a retaining wall structure, display panel and display device", all of which are approved by The reference is incorporated in this application.

Technical field

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

Background technique

The statements here only provide background information related to the present application and do not necessarily constitute prior art.

With the development and progress of science and technology, LCD monitors have become the mainstream products of monitors due to their hot spots such as thin body, low power consumption and low radiation, which have been widely used. Thin film transistor liquid crystal display (Thin Film Transistor-Liquid Crystal) (TFT-LCD) generally includes four major items: array technology, color film technology, box-forming technology, module technology. The first process of the box-forming process is an alignment layer process. The alignment layer is formed by applying alignment liquid to solidify the alignment liquid.

For the alignment liquid process, a retaining wall is generally designed around the display area, but the design of the retaining wall may affect the display effect of the display panel.

Summary of the invention

The purpose of this application is to provide a retaining wall structure, a display panel and a display device to improve the display effect of the display panel.

The present application discloses a retaining wall structure formed in a display panel. The display panel is divided into a display area and a non-display area. The display panel includes an alignment layer covering at least the display area. The non-display area surrounds the alignment layer; the retaining wall structure includes a main retaining wall; and a first sub-retaining wall connected to the main retaining wall at one end and extending toward the alignment layer at the other end.

The present application also discloses a display panel, which is divided into a display area and a non-display area. The display panel includes an alignment layer covering at least the display area, and a retaining wall structure provided in the non-display area. The wall structure surrounds the alignment layer; the retaining wall structure includes: a main retaining wall and a first sub-retaining wall, one end of the first sub-retaining wall is connected to the main retaining wall, and the other end faces the direction of the alignment layer Extension; the second sub-retaining wall includes a first trunk and a second trunk; the first trunk is parallel to the main retaining wall; the second trunk is parallel to the first sub-retaining wall, the first The main trunk crosses the second main trunk; wherein, the first sub-retaining wall is perpendicular to the main retaining wall; the two or more second sub-retaining walls on one side of the first sub-retaining wall include one The second trunk and the two first trunks, the two first trunks are spaced apart, and the first trunk close to the main retaining wall is spaced from the main retaining wall; The distance between the adjacent first trunk, or the distance between the second trunk and the adjacent second trunk, or the distance between the second trunk and the adjacent main retaining wall, or the distance between the first trunk and the adjacent The distance between the first sub-retaining wall, or the distance between the second trunk and the adjacent first sub-retaining wall, or the distance between the first trunk and the adjacent main retaining wall is greater than 2.5 microns, less than 50 microns . .

The present application also discloses a display device including a display panel, the display panel is divided into a display area and a non-display area, the display panel includes an alignment layer covering at least the display area, and is provided in the non-display area The retaining wall structure surrounds the alignment layer; the retaining wall structure includes: a main retaining wall and a first sub-retaining wall, one end of the first sub-retaining wall is connected to the main retaining wall, another One end extends in the direction of the alignment layer; at least two second sub-retaining walls, the at least two second sub-retaining walls are disposed on the same side of the main retaining wall and on the same side as the first sub-retaining wall And are located on both sides of the extension direction of the first sub-retaining wall.

In order to prevent the outflow of the alignment liquid when forming the alignment layer on the display panel coating process of the alignment liquid, a closed or disconnected retaining wall structure is provided at the edge of the display area, but there will always be alignment liquid along the barrier wall When the structure extends in the direction of lateral flow; this application sets a main retaining wall and a first sub-retaining wall, one end of the first sub-retaining wall is in contact with the main retaining wall, and the other end extends in the direction of the display area. The setting of the first sub-retaining wall can be Effectively prevent the lateral flow of the alignment liquid in the closed retaining wall or the disconnected retaining wall, effectively control the coating accuracy of the alignment liquid, and further improve the display effect of the display panel.

BRIEF DESCRIPTION

The included drawings are used to provide a further understanding of the embodiments of the present application, which form a part of the description, are used to illustrate the embodiments of the present application, and together with the text descriptions explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without paying creative labor, other drawings can also be obtained based on these drawings. In the drawings:

1 is a schematic diagram of a display panel provided by an embodiment of the present application;

2 is a schematic diagram of a second sub-retaining wall connected to a main retaining wall of a display panel provided by an embodiment of the present application;

3 is a schematic diagram of a second sub-retaining wall of a display panel not connected to a main retaining wall provided by an embodiment of the present application;

4 is a schematic diagram of two second sub-blocks of a display panel that are not connected and one of them is connected to a main block wall according to an embodiment of the present application;

FIG. 5 is a schematic diagram of two second sub-retaining walls of a display panel connected to a main retaining wall according to an embodiment of the present application;

6 is a schematic diagram of two second sub-retaining walls connected to a display panel and not connected to the main retaining wall according to an embodiment of the present application;

7 is a schematic diagram of a lateral arrangement of second sub-retaining walls provided by an embodiment of the present application;

8 is a schematic diagram of a first backbone provided on a first sub-block wall of a display panel according to an embodiment of the present application;

9 is a schematic diagram of a combined retaining wall of a display panel provided by an embodiment of the present application;

10 is a schematic diagram of another combined retaining wall of a display panel provided by an embodiment of the present application;

11 is a cross-sectional view of a display panel provided by an embodiment of the present application;

12 is a schematic diagram of a display device provided by an embodiment of the present application.

detailed description

It should be understood that the terminology, specific structural and functional details disclosed here are only for describing specific embodiments and are representative, but this application can be implemented in many alternative forms and should not be interpreted as only Limited to the embodiments set forth herein.

In the description of the present application, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating relative importance, or implicitly indicating the number of technical features indicated. Thus, unless otherwise stated, the features defined as "first" and "second" may expressly or implicitly include one or more of the features; "multiple" means two or more. The term "comprising" and any variations thereof are meant to be non-exclusive and one or more other features, integers, steps, operations, units, components, and/or combinations thereof may be present or added.

In addition, "center", "landscape", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" The terms such as the indicated orientation or positional relationship are described based on the orientation or relative positional relationship shown in the drawings, only for the convenience of describing the simplified description of the present application, rather than indicating that the device or element referred to must have a specific orientation It is constructed and operated in a specific orientation, so it cannot be understood as a limitation to this application.

In addition, unless otherwise clearly specified and defined, the terms "installation", "connected", "connection" should be understood in a broad sense, such as fixed connection, detachable connection, or integral connection; may be mechanical connection , It can also be an electrical connection; it can be directly connected, indirectly connected through an intermediate medium, or the internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

The present application will be further described below with reference to the drawings and optional embodiments.

As shown in FIG. 1, an embodiment of the present application discloses a retaining wall structure 130 formed on a display panel. The display panel 100 is divided into a display area 110 and a non-display area 120. The display panel 100 includes at least In the alignment layer 140 of the display area 100, the retaining wall structure 130 is disposed in the non-display area 120 and surrounds the alignment layer 140; the retaining wall structure 130 includes a main retaining wall 131; The retaining wall 131 is connected, and the other end of the first sub-retaining wall 132 extends toward the alignment layer 140.

When the display panel 100 is coated with the alignment liquid to form the alignment layer, in order to prevent the outflow of the alignment liquid, a closed or broken barrier wall structure 130 is provided on the edge of the display area 110, but the barrier wall structure 130 may have irregularities Uneven conditions, so that the alignment liquid flows along both sides of the protrusion 134; closed-type retaining walls may have the phenomenon of alignment (PI) liquid backflow and alignment liquid lateral movement, which is extremely unfavorable for the precision control of the PI process ; The disconnected retaining wall can improve the return of PI liquid, but the PI liquid is blocked, and then the lateral movement is not improved; there are also integrated retaining walls used, but the PI liquid is blocked by the PS retaining wall. The lateral movement has not improved. When the alignment fluid meets the PS retaining wall, due to the unevenness of the retaining wall, the alignment fluid will move to the left and right sides when it hits the retaining wall protrusion 134 (like diffuse reflection of light), which controls the accuracy of the alignment layer process And its disadvantage. In this solution, a main retaining wall 131 and a first sub-retaining wall 132 are provided. One end of the first sub-retaining wall 132 contacts the main retaining wall 131 and the other end extends toward the alignment layer. The setting of the first sub-retaining wall 132 can be effectively The alignment liquid is prevented from flowing to both sides of the protrusion 134 in the closed retaining wall structure 130 or the disconnected retaining wall structure 130, the coating accuracy of the alignment liquid is effectively controlled, and the display effect of the display panel can be well improved.

More specifically, the material of the retaining wall structure 130 is the same as the material of the photo spacer (PS), and is formed in the same process. Of course, the retaining wall structure 130 may also be other materials.

The main retaining wall 131 is perpendicular to the first sub-retaining wall 132. The vertical second retaining wall structure 130 has a better blocking effect on the alignment liquid flowing on both sides of the protrusion 134, and can better control the coating accuracy of the alignment liquid. Of course, this embodiment may not be arranged vertically, as long as it can block the lateral flow of the alignment liquid.

As shown in FIG. 2, the retaining wall structure 130 further includes at least two second sub-retaining walls 133. The at least two second sub-retaining walls 133 are disposed on the same side of the main retaining wall 131 and on the same side as the first sub-retaining wall 132 ; And are located on both sides of the extension direction of the first sub-retaining wall 132 respectively; A second sub-retaining wall 133 is added on the basis of the main retaining wall 131 and the first sub-retaining wall 132, and the second sub-retaining wall 133 is provided on both sides of the first sub-retaining wall 132 to assist the first sub-retaining wall 132 to improve the main The protrusion 134 of the retaining wall 131 causes the alignment liquid to flow in the extending direction of the main retaining wall 131, so the second sub-retaining wall 133 further makes the coating process of the alignment liquid more accurate.

The distance between the end of the first sub-block wall 132 near the display area 110 and the end of the second sub-block wall 133 near the display area 110 is the same as the distance from the display area 110. The distance between the end of the first sub-retaining wall 132 close to the display area 110 and the distance from the main retaining wall and the end of the second sub-retaining wall 133 close to the display area 110 and the display area 110 is the same as the distance from the main retaining wall, and the same distance is aligned The arrangement of the device facilitates the control of the accuracy of the alignment layer 140 and prevents the alignment liquid 140 blocked by the long sub-retaining wall structure from flowing to one of the short sub-retaining wall structures due to the misalignment of the two end surfaces, causing the alignment liquid 140 to accumulate to short One sub-retaining wall structure is not conducive to the accuracy control of the alignment layer 140 process.

Wherein, the distance between the second trunk 133b and the adjacent main retaining wall 131, or the distance between the first trunk 133a and the adjacent first sub-retaining wall 132, or the second trunk 133b and the adjacent first The distance between the sub-retaining walls 132, or the distance between the main retaining wall 131 and the adjacent first trunk 133a is greater than 2.5 microns and less than 50 microns. The distance between each retaining wall structure 130 is set between 2.5 microns and 50 microns, to ensure that the alignment liquid 140 can flow well during the process of the alignment layer 140, and to prevent the width from being too large, resulting in the alignment layer 140 The accuracy control is not good, which is not conducive to the display effect of the display panel 100. In this embodiment, the distance between each retaining wall structure 130 may also be set to be between 2.5 microns and 1000 microns. It is also feasible that adjacent retaining walls are within 1000 microns, but this solution is not limited to this range. As long as the flow of the alignment liquid 140 is suitable.

Among them, the distance between the first trunk 133a and the first trunk 133a or the distance between the second trunk 133b and the second trunk 133b or the distance between the second trunk 133b and the main retaining wall 131 or the distance between the first trunk 133a and the first trunk 133a The distance between the one sub-retaining wall 132 or the distance between the second trunk 133b and the first sub-retaining wall 132 or the distance between the first trunk 133a and the main retaining wall 131 is set to 30 microns. When the width between the retaining wall structure 130 and the retaining wall structure 130 is 30 microns, the flow of the alignment liquid 140 can be the best, and the alignment liquid 140 will not flow poorly due to the too small width, resulting in the accumulation of the alignment liquid 140; When it is wide, the lateral flow of the alignment liquid 140 cannot be improved.

In this embodiment, the width of the main retaining wall 131, the first sub-retaining wall 132, the first backbone 133a, and the second backbone 133b may be set to 2.5 microns to 1000 microns, and the optimal width is set to 30 microns. When the line width is 2.5 microns to 1000 microns, it can prevent the retaining wall structure 130 from occupying too much area, which is not conducive to the accuracy control of the alignment layer 140 process; in this solution, the main retaining wall 131 and the first sub-retaining wall 132 can be The widths of the first main body 133a and the second main body 133b are set to 30 micrometers, which will not occupy too much area and the accuracy of the alignment layer 140 process is not easy to control, and the retaining wall structure 130 is also easy to form. Of course, the width of the retaining wall of this embodiment is not limited to this range, as long as the alignment liquid 140 of this embodiment can be flowed.

In one embodiment, the second sub-retaining wall 133 includes a first backbone 133a parallel to the main retaining wall, and a second backbone 133b parallel to the first sub-retaining wall 132, the first backbone 133a intersects the second backbone 133b Settings. The second sub-retaining wall 133 is provided with a first backbone 133a parallel to the main retaining wall 131, a second backbone 133b parallel to the first sub-retaining wall 132, and the setting of the second backbone 133b can further assist the first sub-retaining wall 132 The flow of the alignment liquid 140 caused by the protrusions 134 of the main retaining wall 131 prevents the backflow of the alignment liquid 140, better prevents the alignment of the alignment liquid 140, and eases the risk that the precision of the alignment liquid 140 is difficult to control.

In an embodiment, the second sub-retaining wall 133 is spaced from the first sub-retaining wall 132 and does not directly contact. The second sub-retaining wall 133 and the first sub-retaining wall 132 are spaced apart to prevent the three retaining wall structures 130 of the main retaining wall 131, the first sub-retaining wall 132 and the second sub-retaining wall 133 from forming a closed area, which is more beneficial to The precision control of the alignment layer 140 process. During the coating process, the alignment liquid does not flow out of the retaining wall structure 130, which can effectively alleviate the risk that the precision of the alignment liquid 140 is difficult to control.

In one embodiment, the second trunk 133b of the second sub-retaining wall 133 is connected to the main retaining wall 131 near one end of the main retaining wall 131, and the first backbone 133a is spaced from the main retaining wall 131 and does not directly contact. The second main stem 133b is connected to the main retaining wall 131, and the first main stem 133a is not in direct contact with the main retaining wall 131. Such an arrangement can alleviate the risk that the accuracy of the alignment fluid is difficult to control.

FIG. 3 shows another structure of the second sub-retaining wall 133, which differs from the embodiment of FIG. 2 in that the main retaining wall 131 is spaced from the second sub-retaining wall 133 and does not directly contact. A second sub-retaining wall 133 is added on the basis of the main retaining wall 131 and the first sub-retaining wall 132, and the second sub-retaining wall 133 is disposed on both sides of the first sub-retaining wall 132 and is spaced apart from the main retaining wall 131, wherein The second sub-retaining wall 133 is provided with a first main trunk 133a parallel to the main retaining wall 131, and a second main trunk 133b parallel to the first sub-retaining wall 132, and the second sub-retaining wall 133 is further increased to the first sub-retaining wall 132 is parallel to the second backbone 133b and the first backbone 133a parallel to the main retaining wall 131, which makes the alignment layer process more precise.

As shown in FIG. 4, another arrangement of the plurality of second sub-blocking walls 133 is shown. There are at least two second sub-retaining walls 133 along the direction perpendicular to the main retaining wall 131, that is, two or more second sub-retaining walls 133 are provided on the sides of the first sub-retaining wall 132, and the alignment layer 140 is formed At this time, the alignment liquid 140 flows according to the arrangement of the retaining wall structure 130, and the arrangement of the plurality of second trunks 133b and the first sub-retaining wall 132 further cooperates with the first sub-retaining wall 132 to prevent the alignment liquid 140 from going to both sides of the protrusion 134 The flow makes the alignment liquid flow more accurate, ensuring better display effect of the display panel. Of course, in this solution, a second sub-retaining wall 133 may also be provided on the side of the first sub-retaining wall 132.

More specifically, there are two second sub-retaining walls 133 arranged on the first side of the first sub-retaining wall along the direction perpendicular to the axis of the main retaining wall 131, the two sub-retaining walls are spaced apart, and one of them is directly connected to the main retaining wall 131. The second sub-retaining wall 133 on the second side is arranged symmetrically with the second sub-retaining wall on the first side with the first sub-retaining wall as the axis. Two or more second sub-retaining walls 133 are provided on the side of the first sub-retaining wall 132. When the alignment layer 140 is formed, the alignment liquid 140 flows according to the arrangement of the retaining wall structure 130, and a plurality of second trunks The arrangement of 133b and the first sub-blocking wall 132 further cooperates with the first sub-blocking wall 132 to prevent the alignment liquid 140 from flowing to both sides of the protrusion 134, so that the alignment liquid flows more accurately, and the display effect of the display panel is better.

Wherein, the distance between the first trunk 133a and the adjacent first trunk 133a, or the distance between the second trunk 133b and the adjacent second trunk 133b, or the first trunk 133a and the unconnected second trunk 133b The distance between them is greater than 2.5 microns and less than 50 microns. At the same time, the width can also be set to a width greater than 2.5 microns and less than 1000 microns. Within this width, it is ensured that the alignment liquid 140 can flow well during the process of the alignment layer 140, and the width is prevented from being too large, resulting in the alignment layer 140 The accuracy control is not good, which is not conducive to the display effect of the display panel 100. The optimal distance between the retaining walls is set at 30 μm, and the alignment liquid 140 will not flow smoothly due to the too small width, resulting in the accumulation of the alignment liquid 140.

As shown in FIG. 5, it is a structural schematic diagram of the second sub-retaining wall 133 including more than two first main trunks 133a; that is, more than two second sub-retaining wall 133 on the same side includes one second main trunk 133b and two first main trunks 133a, the two first trunks 133a are spaced apart, and the first trunk 133a close to the main retaining wall 131 is spaced from the main retaining wall 131, extending the second sub-retaining wall 133 on the same side to the extending direction of the first sub-retaining wall 132 Extension, the plurality of first trunks 133a can block the backflow of the alignment liquid multiple times, and further control the accuracy of the alignment liquid 140 process. In the retaining wall structure, the second sub-retaining wall includes more than two first trunks, which can further improve the phenomenon that the alignment liquid flows back from the main retaining wall, and can also improve the lateral flow of the alignment liquid to ensure the alignment liquid Coating accuracy.

The difference between FIG. 6 and FIG. 5 is that the first trunk 133a and the second trunk 133b of the second sub-retaining wall 133 are not in contact with the main retaining wall 131, that is, the second sub-retaining wall 133 on the same side is spaced apart, and The arrangement is toward the display area 110, and a plurality of second sub-retaining walls 133 can also be added in the arrangement direction, as long as the retaining wall structure 130 is not in the display area 110 and does not affect the display effect of the display panel 100, at the same time, this embodiment can be achieved It is sufficient to control the process accuracy of the alignment layer 140 in the middle.

Wherein, when two or more second sub-retaining walls 133 of the first main trunk 133a are provided, the distance between the first main trunk 133a of the second sub-retaining wall 133 and the first main trunk 133a is equal to the first main trunk close to the main retaining wall 131 The distance between 133a and the main retaining wall 131. The first main body 133a can block the backflow of the alignment liquid 140, and the distance between the first main bodies 133a is the same, so that the flow of the alignment liquid 140 can be regulated. In this embodiment, the distance between the first trunk 133a close to the main retaining wall 131 and the main retaining wall 131 is half of the distance between the first trunk 133a and the first trunk 133a, so that the alignment liquid 140 can flow back The role of buffering.

As shown in FIG. 7, it is a schematic structural view of the second sub-retaining wall 133 including more than two second trunks 133b. That is, a plurality of second sub-retaining walls 133 are interposed between adjacent first sub-retaining walls 132, and a plurality of second backbones 133b are provided on one first backbone 133a along the extending direction of the main retaining wall 131, and the second backbone 133b There is a gap. The coating accuracy of the alignment layer is controlled in different ways. This setting can effectively improve the lateral flow of the alignment liquid, and assist the first sub-block wall 132 to block the lateral flow of the alignment liquid. At the same time, the first trunk can also Improve the phenomenon that the alignment liquid flows back from the main retaining wall to the display area.

Of course, the technical solution in which the second sub-retaining wall 133 includes more than two first trunks 133a and more than two second trunks 133b is also feasible; this application is not limited to changes in these several ways, there may be Other combinations improve the accuracy of the alignment liquid coating process.

FIG. 8 is a schematic diagram of the improvement of the structure of the first sub-retaining wall 132. Add a first trunk on the first sub-retaining wall. The first trunk is not in contact with the main retaining wall. With the setting of the first sub-retaining wall 132, the backflow of the alignment liquid 140 can be well blocked to ensure the accuracy of the alignment layer 140. control. The first trunk can be arranged parallel to the main retaining wall, or can be arranged in other shapes, which can ensure that the alignment liquid reflux can be improved. A plurality of second sub-retaining walls can also be provided on both sides of the first sub-retaining wall, and the second sub-retaining wall is not in contact with the first sub-retaining wall and the first trunk of the first sub-retaining wall to prevent the formation of a closure Area, cannot improve the accuracy of the alignment fluid process. There may be a plurality of first trunks 133a provided on the first sub-block wall, which are distributed in parallel. Multiple settings can further improve the reflux of the alignment liquid and improve the accuracy of the alignment liquid coating process.

In an embodiment, the first sub-retaining wall 132 and the second sub-retaining wall 133 can be combined as needed. A combination shown in FIG. 9 is a comprehensive application of the above-described embodiment. In a first sub-retaining wall 132. Two connected second sub-retaining walls 133 on one side are not connected to the main retaining wall 131, and two second sub-retaining walls 133 on the other side are connected to the main retaining wall 131. A first trunk 133a is provided on the retaining wall 132, and two second sub-retaining walls 133 which are not connected are provided on the other side of the first sub-retaining wall 132 where the first backbone 133a is provided, one of which is connected to the main retaining wall 131. The arrangement of the three-seed retaining wall structure is arranged on the main retaining wall 131 so as to form the retaining wall structure 130 repeatedly. In this solution, the retaining wall structure 130 is repeatedly arranged on the main retaining wall 131, and the combined retaining wall structure 130 can also control the accuracy of the alignment layer 140 process.

As shown in FIG. 10, this embodiment differs from the previous embodiment in that the retaining wall is intermittently provided, and a section of the first retaining wall, a first sub-retaining wall 132, and a first sub-retaining wall 132 are provided on a section of the wall The second sub-retaining walls 133 on both sides are arranged unevenly on adjacent adjacent retaining walls. The three sub-retaining walls 133 are arranged cyclically at intervals, forming a circle of retaining wall structure 130, or three sections After the retaining wall structures 130 are connected, they are arranged at intervals, or randomly arranged to form the retaining wall structure 130, or the three-segment retaining wall structure 130 is connected in a circular arrangement to achieve the accuracy of controlling the alignment layer process.

This application can combine various embodiments together, and is not limited to the combination in FIG. 9 and FIG. 10, there can be more embodiments, as long as it can achieve the control of the application accuracy of the alignment liquid, but here More details.

As shown in the schematic cross-sectional view of the display panel shown in FIG. 11, a retaining wall structure 130 is provided on both the first substrate 150 and the second substrate 160, and the retaining wall structure 130 is disposed on the side of the sealant 170 near the interior of the display panel (display panel 100 The inside is the side of the display area 110 surrounded by the frame glue 170). The retaining wall is set to block the alignment liquid 140 from flowing out of the retaining wall to improve the control of the process accuracy of the alignment layer 140. The retaining wall is set outside the display area and cannot be set at Within the display area.

As shown in FIGS. 11 and 12, as another embodiment of the present application, a display device 200 is disclosed, including the above-mentioned display panel 100, and the display panel includes the above-mentioned retaining wall structure 130.

The technical solution of the present application can be widely used in various display panels, such as Twisted Nematic (TN) display panel, In-Plane Switching (IPS) display panel, Vertical Alignment (VA) ) Display panel, multi-quadrant vertical alignment (Multi-Domain Vertical Alignment, MVA) display panel, of course, it can also be other types of display panels, such as organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panel, both The above scheme is applicable.

The above content is a further detailed description of this application in conjunction with specific optional embodiments, and it cannot be assumed that the specific implementation of this application is limited to these descriptions. For a person of ordinary skill in the technical field to which this application belongs, without deviating from the concept of this application, several simple deductions or replacements can be made, which should be regarded as falling within the protection scope of this application.

Claims

A retaining wall structure is formed in a display panel. The display panel is divided into a display area and a non-display area. The display panel includes an alignment layer covering at least the display area. The retaining wall is disposed in the non-display area. , And surround the alignment layer;

The retaining wall structure includes:

Main retaining wall; and

The first sub-retaining wall has one end connected to the main retaining wall and the other end extending toward the alignment layer.
The retaining wall structure according to claim 1, wherein the main retaining wall is perpendicular to the first sub-retaining wall.
The retaining wall structure according to claim 1, wherein the retaining wall structure further includes at least two second sub-retaining walls, and the at least two second sub-retaining walls are disposed on the main retaining wall The same side is the same side as the first sub-retaining wall, and is located on both sides of the extending direction of the first sub-retaining wall, respectively.
The retaining wall structure according to claim 3, wherein the second sub-retaining wall comprises:

A first trunk, parallel to the main retaining wall; and

The second trunk is parallel to the first sub-retaining wall, and the first trunk and the second trunk are arranged crosswise.
A retaining wall structure according to claim 4, wherein two or more second sub-retaining walls located on one side of the first sub-retaining wall include one second main trunk and two first main trunks, The two first trunks are spaced apart, and the first trunk close to the main retaining wall is spaced from the main retaining wall.
A retaining wall structure according to claim 4, wherein an end of the second trunk near the main retaining wall is connected to the main retaining wall, and the first backbone is spaced from the main retaining wall.
A retaining wall structure according to claim 4, wherein both the first trunk and the second trunk of the second sub-retaining wall are not in contact with the main retaining wall, and the second sub-retaining wall is provided with one The second trunk, and a plurality of first trunks provided in the direction of the display area by the second trunk, with intervals between the first trunks.
A retaining wall structure according to claim 4, wherein a plurality of said second sub-retaining walls are interposed between adjacent first sub-retaining walls, and along one of said first retaining walls along said main retaining wall A plurality of second stems are provided in the extending direction, and there is a gap between the second stems.
A retaining wall structure according to claim 3, wherein an end of the first sub-retaining wall close to the display area and an end of the second sub-retaining wall close to the display area reach the display area The distance is the same.
A retaining wall structure according to claim 3, wherein on the first side of the first sub-retaining wall, two of the second sub-retaining walls are arranged along the direction perpendicular to the axis of the main retaining wall, The first sub-retaining wall is spaced from the second sub-retaining wall and does not directly contact, wherein the first sub-retaining wall or the second sub-retaining wall is directly connected to the main retaining wall; The second sub-retaining wall is arranged symmetrically with the second sub-retaining wall on the first side with the first sub-retaining wall as an axis.
The retaining wall structure according to claim 3, wherein at least two of the second sub-retaining walls are provided on one side of the first sub-retaining wall.
A retaining wall structure according to claim 11, wherein the main retaining wall is spaced from the second sub-retaining wall.
A retaining wall structure according to claim 2, wherein a first trunk is provided on the first sub-retaining wall, and the first trunk is spaced from the main retaining wall.
The retaining wall structure according to claim 1, wherein the retaining wall further includes a second sub-retaining wall, and the second sub-retaining wall includes:

A first trunk, parallel to the main retaining wall; and

A second trunk, which is parallel to the first sub-retaining wall, and the first trunk and the second trunk are arranged crosswise;

Wherein, the distance between the first trunk and the adjacent first trunk, or the distance between the second trunk and the adjacent second trunk, or the distance between the second trunk and the adjacent main retaining wall , Or the distance between the first backbone and the adjacent first sub-retaining wall, or the distance between the second backbone and the adjacent first sub-retaining wall, or between the first backbone and the adjacent main retaining wall The distance is greater than 2.5 microns and less than 50 microns.
A retaining wall structure according to claim 14, wherein the distance between the first trunk and the adjacent first trunk, or between the second trunk and the adjacent second trunk Distance, or the distance between the second trunk and the main retaining wall, or the distance between the first trunk and the first sub retaining wall, or the second trunk and the first sub The distance between the retaining walls, or the distance between the first backbone and the main retaining wall is set to 30 microns.
A display panel is divided into a display area and a non-display area. The display panel includes an alignment layer covering at least the display area, and a retaining wall structure provided in the non-display area. The retaining wall structure surrounds the Alignment layer

The retaining wall structure includes:

Main retaining wall

A first sub-retaining wall, one end is connected to the main retaining wall, and the other end extends in the direction of the alignment layer; and

At least two second sub-retaining walls, the at least two second sub-retaining walls are disposed on the same side of the main retaining wall, on the same side as the first sub-retaining wall, and are respectively located on the first sub-retaining wall Both sides of the extension direction of the retaining wall;

The second sub-retaining wall includes:

A first trunk, parallel to the main retaining wall; and

A second trunk, which is parallel to the first sub-retaining wall, and the first trunk and the second trunk are arranged crosswise;

Wherein, the first sub-retaining wall is perpendicular to the main retaining wall; two or more second sub-retaining walls located on one side of the first sub-retaining wall include one second main trunk and two A trunk, the two first trunks are separated, and the first trunk close to the main partition wall is separated from the main partition wall; the distance between the first trunk and the adjacent first trunk, Or the distance between the second trunk and the adjacent second trunk, or the distance between the second trunk and the adjacent main retaining wall, or the distance between the first trunk and the adjacent first sub-retaining wall, Or the distance between the second trunk and the adjacent first sub-retaining wall, or the distance between the first trunk and the adjacent main retaining wall is greater than 2.5 microns and less than 50 microns.
A display device includes a display panel, the display panel is divided into a display area and a non-display area, the display panel includes an alignment layer covering at least the display area, and a retaining wall structure provided in the non-display area, The retaining wall structure surrounds the alignment layer;

The retaining wall structure includes:

Main retaining wall; and

A first sub-retaining wall, one end is connected to the main retaining wall, and the other end extends toward the alignment layer;

At least two second sub-retaining walls, the at least two second sub-retaining walls are disposed on the same side of the main retaining wall, on the same side as the first sub-retaining wall, and are respectively located on the first sub-retaining wall Both sides of the extension direction of the retaining wall.