CN107290901B

CN107290901B - Display panel and display device

Info

Publication number: CN107290901B
Application number: CN201710718174.5A
Authority: CN
Inventors: 彭超; 康佳琪; 张振铖; 崔锐利; 邱英彰
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2017-08-21
Filing date: 2017-08-21
Publication date: 2020-05-29
Anticipated expiration: 2037-08-21
Also published as: CN107290901A

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a first substrate and a second substrate which are oppositely arranged, and a first retaining wall which is positioned on one side of the second substrate close to the first substrate, wherein in at least one first section of the display panel, one end of the first retaining wall facing the first substrate is contacted with the first substrate, and in at least one second section of the display panel, one end of the first retaining wall facing the first substrate is not contacted with the first substrate, namely the first retaining wall comprises a part contacted with the first substrate and a part not contacted with the first substrate, so that a gap is formed between the first substrate and part of the first retaining wall, the first retaining wall not only can play a supporting role, but also can enable the display panel to be communicated with the outside, and further, when the display panel is subjected to vacuum bonding, the air pressure in the display panel can be released through the gap.

Description

Display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a display panel and a display device.

Background

In the prior art, in order to prevent external water vapor from entering the display panel, a retaining wall is arranged in a packaging area of the display panel, one end of the retaining wall is in contact with a color film substrate in a direction perpendicular to the display panel, and the other end of the retaining wall is in contact with an array substrate, so that the display panel forms a fully closed structure.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, which are used for solving the problem that the display panel in the prior art cannot release the internal air pressure.

In one aspect, embodiments of the present invention provide a display panel, where the display panel includes a display area and an encapsulation area surrounding the display area;

the display panel further includes:

the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, and the liquid crystal layer is positioned between the first substrate and the second substrate;

the frame sealing glue is positioned in the packaging area and packages the first substrate and the second substrate into an integral structure;

the first retaining wall is arranged on one side, close to the first substrate, of the second substrate and located in the frame sealing glue, in at least one first cross section of the display panel, one end, facing the first substrate, of the first retaining wall is in contact with the first substrate, and in at least one second cross section of the display panel, one end, facing the first substrate, of the first retaining wall is not in contact with the first substrate;

the first section and the second section are both perpendicular to a first plane and are both parallel to a first direction, the first plane is a plane parallel to the display panel, and the first direction is a width direction of an orthographic projection of the frame sealing glue on the first plane.

On the other hand, the embodiment of the invention also provides a display device, which comprises the display panel.

Any one of the above technical solutions has the following beneficial effects:

in the embodiment of the present invention, the first retaining wall is disposed on a side of the second substrate close to the first substrate, and in at least one first cross section of the display panel, one end of the first retaining wall facing the first substrate is in contact with the first substrate, and in at least one second cross section of the display panel, one end of the first retaining wall facing the first substrate is not in contact with the first substrate, that is, the first retaining wall includes a portion in contact with the first substrate and a portion not in contact with the first substrate, so that a gap exists between the first substrate and a portion of the first retaining wall, and therefore the first retaining wall not only can play a supporting role, but also can conduct the inside of the display panel with the outside, and further, when the display panel is vacuum-bonded, the air pressure inside the display panel can be released through the gap.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1A is a top view of a display panel according to an embodiment of the invention

Fig. 1B is a partial top view of a display panel according to an embodiment of the invention;

FIG. 2 is a schematic cross-sectional view of a first cross-section taken along direction AA' in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a second cross-section taken along direction BB' in FIG. 1;

FIG. 4 is a cross-sectional view taken along direction CC' of FIG. 1;

FIG. 5 is a partial top view of another display panel according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a second cross-section in the direction BB' in FIG. 5;

FIG. 7 is a cross-sectional view taken along direction CC' of FIG. 5;

FIG. 8 is a partial top view of another display panel according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of the first cross-section taken along direction AA' of FIG. 8;

FIG. 10 is a schematic cross-sectional view of a second cross-section in the direction BB' in FIG. 9;

FIG. 11 is a top view of another display panel according to an embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view of a first cross-section taken along direction AA' of FIG. 11;

FIG. 13 is a schematic cross-sectional view of a second cross-section taken along direction BB' in FIG. 11;

FIG. 14 is a partial top view of another display panel according to an embodiment of the invention;

FIG. 15 is a schematic cross-sectional view of the first cross-section of FIG. 14 along direction AA';

FIG. 16 is a schematic cross-sectional view of a second cross-section of FIG. 14 taken along direction BB';

FIG. 17 is a schematic cross-sectional view of another first cross-section taken along direction AA' of FIG. 11;

FIG. 18 is a schematic cross-sectional view of another second cross-sectional view taken along direction BB' in FIG. 11;

FIG. 19 is a partial top view of another display panel in accordance with an embodiment of the present invention;

FIG. 20 is a schematic cross-sectional view of the first cross-section in the direction AA' of FIG. 19;

FIG. 21 is a schematic cross-sectional view of a second cross-section in the direction BB' in FIG. 19;

FIG. 22 is a partial top view of another display panel in accordance with an embodiment of the present invention;

FIG. 23 is a schematic cross-sectional view of the first cross-section taken along direction AA' of FIG. 22;

FIG. 24 is a schematic cross-sectional view of a second cross-section in the direction BB' of FIG. 22;

fig. 25 is a top view of a display panel according to an embodiment of the invention;

FIG. 26 is a partial top view of another display panel in accordance with an embodiment of the present invention;

FIG. 27 is a schematic cross-sectional view of the first cross-section in the direction AA' of FIG. 26;

FIG. 28 is a schematic cross-sectional view of a second cross-section taken along direction BB' in FIG. 26;

fig. 29 is a top view of another display panel according to an embodiment of the invention;

FIG. 30 is a schematic cross-sectional view of the first cross-section in the direction AA' of FIG. 29;

FIG. 31 is a schematic cross-sectional view of a second cross-section in the direction BB' in FIG. 29;

FIG. 32 is a partial top view of another display panel in accordance with an embodiment of the present invention;

FIG. 33 is a partial top view of another display panel in accordance with an embodiment of the present invention;

FIG. 34 is a partial top view of another display panel in accordance with an embodiment of the present invention;

fig. 35 is a schematic view of a display device according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it is also to be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through an intermediate element.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1A, fig. 1A is a top view of a display panel according to an embodiment of the present invention, a first cross section related in the embodiment of the present invention is a cross section of fig. 1A along a direction AA ', a second cross section related in the embodiment of the present invention is a cross section of fig. 1A along a direction BB', and the first plane related in the embodiment of the present invention is parallel to the display panel shown in fig. 1A.

Of course, the embodiment of the present invention is merely for convenience of explanation, and the first cross section is schematically illustrated as a cross section along the AA 'direction in fig. 1A, and the second cross section is schematically illustrated as a cross section along the BB' direction in fig. 1A. The first cross section is not limited to be the cross section along AA 'in fig. 1A, and the second cross section is the cross section along BB' in fig. 1A, but the first cross section and the second cross section in the embodiment of the present invention may be any cross sections that satisfy a width direction perpendicular to the first plane and parallel to an orthogonal projection of the frame sealing adhesive on the first plane.

Fig. 1B is a partial top view of a display panel according to an embodiment of the present invention, as shown in fig. 2, fig. 2 is a schematic cross-sectional view of a first cross-section along AA ' in fig. 1B, fig. 3 is a schematic cross-sectional view of a second cross-section along BB ' in fig. 1B, fig. 4 is a schematic cross-sectional view along CC ' in fig. 1B, and fig. 4 is a schematic cross-sectional view of a display panel including a display area 1 and an encapsulation area 22 surrounding the display area 1; the liquid crystal display panel comprises a first substrate 3, a second substrate 4 and a liquid crystal layer 5, wherein the first substrate 3 and the second substrate 4 are oppositely arranged, and the liquid crystal layer 5 is positioned between the first substrate 3 and the second substrate 4; the frame sealing glue 6 is positioned in the packaging area 22, and the first substrate 3 and the second substrate 4 are packaged into an integral structure; the first retaining wall 7 is arranged on one side, close to the first substrate 3, of the second substrate 4 and located in the frame sealing glue 6, in at least one first cross section of the display panel, one end, facing the first substrate 3, of the first retaining wall 7 is in contact with the first substrate 3, and in at least one second cross section of the display panel, one end, facing the first substrate 3, of the first retaining wall 7 is not in contact with the first substrate 3; the first cross section and the second cross section are both perpendicular to the first plane and are both parallel to the first direction X, the first plane is a plane parallel to the display panel, and the first direction X is a width direction of an orthographic projection of the frame sealing glue 6 on the first plane.

Specifically, as shown in fig. 1A, 1B, 2, 3, and 4, the display panel includes a display region 1 and a non-display region 2, and the non-display region 2 includes a transition region 21 and an encapsulation region 22, where the transition region 21 is located on a side of the non-display region 2 close to the display region 1, the encapsulation region 22 is located on a side of the non-display region 2 away from the display region 1, and the first substrate 3 includes a pixel electrode (not shown) and a common electrode (not shown), the pixel electrode and the common electrode can form an electric field after having a certain electric potential, liquid crystal molecules in the liquid crystal layer 5 rotate under the electric field, so that light in the display panel is irradiated onto the second substrate 4, and the light is synthesized through the color resistor 8 on the second substrate 4, so that the display panel displays a corresponding color.

The frame sealing adhesive 6 is located in the encapsulation region 22, specifically, the frame sealing adhesive 6 is disposed around the transition region 21, and the first retaining wall 7 is disposed around the transition region 21, wherein the frame sealing adhesive 6 and the first retaining wall 7 have the following functions: in order to encapsulate the display panel and make the display panel an integral structure, frame sealing glue 6 is coated on the edge of the display panel, that is, the frame sealing glue 6 is coated in the encapsulation region 22, so that the first substrate 3 and the second substrate 4 form an integral structure, and the encapsulation region 22 has a certain box thickness, a first retaining wall 7 is arranged in the frame sealing glue 6, and in order to make the air pressure inside the display panel be released, in at least one first cross section, one end of the first retaining wall 7 facing the first substrate 3 is in contact with the first substrate 3, and in at least one second cross section, one end of the first retaining wall 7 facing the first substrate 3 is not in contact with the first substrate 3, that is, the first retaining wall 7 includes a portion in contact with the first substrate 3 and a portion not in contact with the first substrate 3, so that a gap exists between the first substrate 3 and a portion of the first retaining wall 7, and the inside of the display panel is conducted with the outside, further, when the display panel is vacuum bonded, the air pressure inside the display panel can be released through the gap, specifically, as shown in fig. 4, the height of the first retaining wall 7 in the first cross section is different from that in the second cross section, and the height direction is a direction perpendicular to the display panel, so that at least part of the first retaining wall 7 is in contact with the first substrate 3 to play a supporting role; meanwhile, a gap is formed between at least part of the first retaining wall 7 and the first substrate 3.

In addition, in the prior art, the silicon balls are arranged in the packaging area, the packaging area is kept with a certain box thickness by using the silicon balls, and the silicon balls are required to be circular as much as possible, that is, the length of the silicon balls in the first direction is required to be equal to the length of the silicon balls in the direction perpendicular to the display panel, after the silicon balls are arranged, the frame sealing glue is coated on the packaging area, so that the display panel becomes an integral structure, but when the frame sealing glue is coated, the precision of the coated frame sealing glue is lower due to the existence of the silicon balls, so that the frame sealing glue is not beneficial to realizing narrow frame, in the embodiment of the invention, the first retaining wall 7 is arranged in the packaging area 22, the packaging area 22 is kept with a certain box thickness by using the first retaining wall 7, after the first retaining wall 7 is arranged, when the frame sealing glue is coated, because the shape of the first retaining wall 7 is more regular relative to the silicon balls, compared with, the coated frame sealing glue has higher precision, thereby being beneficial to realizing narrow frames.

In the embodiment, the first retaining wall at least partially supports the first substrate, so that the box thickness uniformity of the periphery of the panel is improved, and in addition, at least part of the first retaining wall is not contacted with the first substrate, so that the air pressure release in the vacuum bonding process is not influenced.

In this embodiment, the first substrate is a color film substrate, and the second substrate is an array substrate; or, the first substrate is an array substrate, and the second substrate is a color film substrate, which is not limited herein.

Optionally, as shown in fig. 5, fig. 5 is a partial top view of another display panel provided in the embodiment of the present invention, as shown in fig. 6, fig. 6 is a schematic cross-sectional view of a second cross-section along a BB 'direction in fig. 5, as shown in fig. 7, and fig. 7 is a cross-sectional view along a CC' direction in fig. 5, wherein a side of the first substrate 3 facing the second substrate 4 includes a plurality of first grooves 9, and an orthogonal projection of the first grooves 9 on a first plane is located within an orthogonal projection of the sealant 6 on the first plane; in the second cross section, the orthographic projection of the first retaining wall 7 on the first plane overlaps with the orthographic projection of the first groove 9 on the first plane.

Since an alignment layer (e.g. PI) needs to be formed on the side of the first substrate 3 close to the second substrate 4 in the process of manufacturing the display panel, typically, an alignment liquid is coated on the side of the first substrate 3 close to the second substrate 4 to form a first alignment layer (not shown), and an alignment liquid is coated on the side of the second substrate 4 close to the first substrate 3 to form a second alignment layer (not shown), liquid crystal molecules in the liquid crystal layer 5 have an initial direction under the action of the first alignment layer and the second alignment layer. External water and oxygen can enter the display panel along the first alignment layer to damage the structure of the display panel. In order to avoid the above situation, as shown in fig. 5, 6 and 7, a plurality of first grooves 9 may be disposed on a side of the first substrate 3 facing the second substrate 4, and an orthographic projection of the first grooves 9 on the first plane is located in an orthographic projection of the sealant 6 on the first plane, and the plurality of first grooves 9 are sequentially arranged along a running direction of the first retaining wall 7, and in the second cross section, the orthographic projection of the first retaining wall 7 on the first plane overlaps with the orthographic projection of the first grooves 9 on the first plane, the first grooves 9 can form a step shape on a side of the first substrate 3 facing the second substrate 4, can intercept the alignment layer there, and prevent water vapor from entering the display panel along the PI, especially because the first grooves 9 exist in the first substrate 3, the step on a side of the first substrate 3 close to the second substrate 4 is intercepted, thereby reducing the possibility that external water oxygen enters the display panel along the first alignment layer to a certain extent, and the air pressure inside the display panel can be released through the first groove 9. The first retaining wall 7 extends in the direction of the orthographic projection of the first retaining wall 7 on the display panel. For example, a direction parallel to the first direction in the first and second cross-sections.

The alignment layer may also be formed by a transfer process, for example, when forming the first alignment layer, the first alignment layer is required to be manufactured first, and then the first alignment layer is arranged on the corresponding position of the first substrate 3 by transfer printing, due to the presence of the first grooves 9 in the first substrate 3, the problem of poor precision when transferring the first alignment layer to a corresponding position on the first substrate 3 can be avoided, i.e., when the first alignment layer is transfer-disposed on the corresponding position of the first substrate 3, the first alignment layer does not completely overlap with the corresponding position, but since the first groove 9 exists in the first substrate 3, even if the first alignment layer and the corresponding position are not completely overlapped, the first groove 9 can prevent the first alignment layer from extending outward too much, reduce the possibility that the external water oxygen contacts with the first alignment layer, thereby reducing the possibility of external water and oxygen entering the display panel along the first alignment layer to a certain extent.

When the first retaining wall 7 is shaped as shown in fig. 6, and the side of the first retaining wall 7 close to the first substrate 3 is a trapezoid with a trapezoid upper bottom and is relatively narrow in the first direction X, in order to enhance the ability of the first groove 9 to cut off the first alignment layer, the orthographic projection of the relatively narrow side of the first retaining wall 7 on the first plane may be located in the orthographic projection of the first groove 9 on the first plane, or the orthographic projection of the relatively wide side of the first retaining wall 7 on the first plane may be located in the orthographic projection of the first groove 9 on the first plane, and the specific arrangement manner may be set according to practical circumstances, and is not particularly limited herein, and when either of the above two manners is adopted, the first groove 9 may cut off the first alignment layer and limit the first alignment layer to the side of the first groove 9 close to the display region 1, and the first alignment layer is not contacted with the first retaining wall 7, and the first groove 9 cuts off the first alignment layer, so that the external water oxygen cannot be contacted with the first alignment layer, thereby improving the water oxygen resistance of the display panel.

Specifically, the overlapping portion of the first retaining wall 7 and the first groove 9 is spaced from the first substrate 3 by the first groove 9, and the non-overlapping portion of the first retaining wall 7 and the first groove 9 is in contact with the first substrate 3. As shown in fig. 7, when the first substrate 3 includes a plurality of first grooves 9 on the side facing the second substrate 4, the heights of any positions of the first retaining walls 7 on the same side in the direction perpendicular to the display panel may be equal, that is, a portion of the first retaining walls 7 is in contact with the first substrate 3, and another portion is not in contact with the first substrate 3, thereby reducing the design complexity of the first retaining walls 7.

Certainly, differently, the first retaining wall 7 is at the overlapping part with the first groove 9, the first groove 9 is separated from the first substrate 3, the non-overlapping part of the first retaining wall 7 and the first groove 9 is in contact with the first substrate 3, and the heights of the first retaining wall 7 in different areas are different, for example, the height of the overlapping part of the first retaining wall 7 and the first groove 9 is greater than the height of the non-overlapping part of the first retaining wall 7 and the first groove 9, and the overlapping part of the first retaining wall 7 and the first groove 9 is embedded into the first groove 9 but is not in contact with the first groove 9, so that the air pressure release path is ensured, the path for external water and oxygen to enter the display panel is prolonged, and the difficulty of water and oxygen infiltration is increased. In this embodiment, the first retaining wall at least partially supports the first substrate, so that the uniformity of the box thickness around the panel is improved, and in addition, at least part of the first retaining wall is not in contact with the first substrate, and the part of the first retaining wall, which is overlapped with the first substrate but not in contact with the first substrate, is provided with the groove, so that the performance of preventing liquid crystal puncture, water vapor and the like is better while the uneven thickness of the peripheral box is improved, and the pressure release in the vacuum bonding process is not influenced.

Optionally, as shown in fig. 8, fig. 8 is a partial top view of another display panel provided in the embodiment of the present invention, as shown in fig. 9, fig. 9 is a schematic cross-sectional view of a first cross-section along AA 'in fig. 8, as shown in fig. 10, and fig. 10 is a schematic cross-sectional view of a second cross-section along BB' in fig. 9, wherein a side of the first substrate 3 facing the second substrate 4 further includes a plurality of second grooves 10, and an orthogonal projection of the second grooves 10 on the first plane is located within an orthogonal projection of the sealant 6 on the first plane; in the first cross section, at least one second recess 10 is included, and the orthographic projection of the second recess 10 on the first plane does not overlap with the orthographic projection of the first retaining wall 7 on the first plane.

Specifically, as shown in fig. 8, 9 and 10, the plurality of second grooves 10 may be located on one side of the first groove 9 close to the display region 1, and sequentially arranged along the moving direction of the first retaining wall 7, the plurality of first grooves 9 and the plurality of second grooves 10 are sequentially overlapped and arranged along the moving direction of the first retaining wall 7, and the first grooves 9 and the second grooves 10 jointly perform a cutting function on the first alignment layer, so as to further improve the cutting function on the first alignment layer, so that the first alignment layer is not in contact with the first retaining wall 7, thereby further reducing the possibility that external water oxygen enters the display panel along the first alignment layer, and the air pressure inside the display panel may be released through the first grooves 9 and the second grooves 10.

It should be noted that the lengths of the first groove 9 and the second groove 10 in the direction of the first retaining wall 7 may be equal, or may also be unequal, and may be set according to practical situations, and it is preferable that orthographic projections of the first groove 9 and the second groove 10 on the second plane are continuous and do not overlap each other.

Optionally, the orthographic projections of the first grooves 9 and the second grooves 10 on the second plane are alternately arranged, and the orthographic projections of the adjacent first grooves 9 and the adjacent second grooves 10 on the second plane are overlapped, so that at least one part of the alignment layer is cut off in the first direction X, and the difficulty of water and oxygen permeation is increased.

Wherein the second plane is perpendicular to the first direction X.

In another preferred embodiment of the present invention, the display panel includes at least two retaining walls, the at least two retaining walls are disposed on one side of the second substrate close to the first substrate and located in the frame sealing adhesive, the at least two retaining walls include a first retaining wall and a second retaining wall, and in a direction perpendicular to a width of the frame sealing adhesive, the second retaining wall is located on one side of the first retaining wall close to the display area; on at least one first cross section of the display panel, one end of the first retaining wall facing the first substrate is in contact with the first substrate, one end of the second retaining wall facing the first substrate is not in contact with the first substrate, and in at least one second cross section of the display panel, one end of the first retaining wall facing the first substrate is not in contact with the first substrate, and one end of the second retaining wall facing the first substrate is in contact with the first substrate; herein, the term contacting includes direct contact and indirect contact.

Alternatively, as shown in fig. 11, fig. 11 is a top view of another display panel provided in the embodiment of the present invention, as shown in fig. 12, fig. 12 is a first cross section along the direction AA 'in fig. 11, as shown in fig. 13, and fig. 13 is a second cross section along the direction BB' in fig. 11, where the display panel further includes: the second retaining wall 11 is arranged on one side, close to the first substrate 3, of the second substrate 4, is positioned in the frame sealing glue 6, and in the direction parallel to the first direction X, the second retaining wall 11 is positioned on one side, close to the display area 1, of the first retaining wall 7; in the first cross section, one end of the second blocking wall 11 facing the first substrate 3 is not in contact with the first substrate 3, and an orthographic projection of the second blocking wall 11 on the first plane is overlapped with an orthographic projection of the second groove 10 on the first plane; in the second cross section, one end of the second blocking wall 11 facing the first substrate 3 is in contact with the first substrate 3.

Specifically, with respect to the arrangement of the second retaining wall 11 and the relationship between the second retaining wall 11 and the second groove 10, reference may be made to the arrangement of the first retaining wall 7 and the relationship between the first retaining wall 7 and the first groove 9, which will not be described in detail herein, when the above design is adopted, the first retaining wall 7 and the second retaining wall 11 may jointly function to support the first substrate 3 and the second substrate 4, so that the display panel maintains a certain box thickness in the encapsulation area 22, and in the prior art, the silicon ball is used to maintain a certain box thickness in the encapsulation area, and is required to be circular as much as possible, that is, the length of the silicon ball in the first direction is required to be equal to the length of the silicon ball in the direction perpendicular to the display panel, whereas in the embodiment of the present invention, the width of the first retaining wall 7 and the second retaining wall 11 in the direction perpendicular to the display panel has no relationship with the height of the first retaining wall 7 and the second retaining wall 11, therefore, compared with the prior art, the height of the first retaining wall 7 and the second retaining wall 11 in the direction perpendicular to the display panel is easier to control, so that the box thickness of the encapsulation region 22 can be strictly controlled by using the first retaining wall 7 and the second retaining wall 11, meanwhile, the first retaining wall 7 and the second retaining wall 11 can separate the inside of the display panel from the outside, the first groove 9 and the second groove 10 can completely cut off the first alignment layer, and the first alignment layer is not in contact with the first retaining wall 7 and the second retaining wall 11, thereby greatly improving the oxygen-blocking capability of the display panel, and preventing the liquid crystal from contacting other structures in the encapsulation region 22, thereby avoiding the problem of liquid crystal puncture, and when the frame sealing glue 6 is coated in the encapsulation region 22 after the first retaining wall 7 and the second retaining wall 11 are arranged in the encapsulation region 22, compared with the prior art (when a silicon ball is arranged in the encapsulation region) to coat the frame sealing glue in the encapsulation region, the frame sealing glue 6 can be coated more uniformly, so that the coating precision of the frame sealing glue 6 is improved, and the narrow frame of the display panel is more favorably realized as the coating precision of the frame sealing glue 6 is higher, so that the design is favorable for realizing the narrow frame of the display panel.

Preferably, for the display panel of this embodiment, any cross section of the display panel perpendicular to the first plane and parallel to the first direction is either a first cross section or a second cross section, that is, any cross section perpendicular to the first plane and parallel to the first direction includes a first retaining wall and a second retaining wall, and the first retaining wall is in contact with the first substrate, and the second retaining wall is not in contact with the first substrate, or the first retaining wall is not in contact with the first substrate, and the second retaining wall is in contact with the first substrate, so that the embodiment of the present invention can utilize the first retaining wall and the second retaining wall to strictly control the cell thickness of the encapsulation region, and utilize the first groove and the second groove to perform the role of cutting the first alignment layer, and make the first alignment layer not in contact with the first retaining wall and the second retaining wall, thereby greatly improving the water and oxygen blocking capability of the display panel, and preventing the liquid crystal from being in contact with other structures in the encapsulation region, thereby the problem of liquid crystal puncture has been avoided, still is favorable to realizing the narrow frame of display panel simultaneously.

Optionally, as shown in fig. 14, fig. 14 is a partial top view of another display panel provided in an embodiment of the present invention, as shown in fig. 15, fig. 15 is a schematic cross-sectional view of a first cross-section of fig. 14 along an AA 'direction, as shown in fig. 16, fig. 16 is a schematic cross-sectional view of a second cross-section of fig. 14 along a BB' direction, where the first substrate 3 is an array substrate, and the second substrate 4 is a color filter substrate; the color film substrate comprises: the color resistance layer 13 is positioned on one side, close to the array substrate, of the color film substrate, the color resistance layer 13 comprises a plurality of first color resistances 81 and a plurality of second color resistances 82, the first color resistances 81 are positioned in the display area 1, the second color resistances 82 are positioned in the encapsulation area 22, and orthographic projections of the first retaining walls 7 and the second retaining walls 11 on the first plane are respectively positioned in orthographic projections of the second color resistances 82 on the first plane; the transparent protective layer 14, the transparent protective layer 14 is located on one side of the color resistance layer 13 close to the array substrate; a plurality of supporting columns 15, wherein the supporting columns 15 are positioned in the display area 1 and are arranged on one side of the transparent protective layer 14 close to the array substrate; wherein, in the direction perpendicular to the first plane, the heights of the first color resistor 81 and the second color resistor 82 are equal; the height of the first retaining wall 7 and the height of the second retaining wall 11 are respectively equal to the height of the support pillar 15.

Specifically, as shown in fig. 14, 15 and 16, the color filter substrate includes a first substrate 12 and a first color resistor 81 and a second color resistor 82 located on a side of the first substrate 12 close to the array substrate, in a direction perpendicular to the first plane, heights of the first color resistor 81 and the second color resistor 82 are equal, and heights of the first retaining wall 7 and the second retaining wall 11 are equal to heights of the supporting pillars 15, respectively, so that a box thickness of the display area 1 is consistent with a box thickness of the encapsulation area 22, thereby improving an appearance of the display panel, and a process can be adopted to manufacture the first color resistor 81 and the second color resistor 82 simultaneously, thereby making a manufacturing process of the display panel relatively simple.

As shown in fig. 14, 15 and 16, the transparent protective layer 14 is used to protect the first color resists 81 and the second color resists 82 from being damaged, and the transparent protective layer 14 has a high transmittance, so that the transmittance of the display panel is not affected, and the supporting posts 15 are used to make the display panel have a certain cell thickness, so that the display panel can hold liquid crystal molecules with the cell thickness.

Alternatively, as shown in fig. 11, 17 and 18, fig. 17 is another first cross-sectional view along AA 'direction in fig. 11, and fig. 18 is another second cross-sectional view along BB' direction in fig. 11, wherein the first substrate 3 is an array substrate, and the second substrate 4 is a color filter substrate; the array substrate includes: and the planarization layer 17 is positioned on one side of the array substrate close to the color film substrate, and the first groove 9 and the second groove 10 are positioned on the planarization layer 17. Specifically, as shown in fig. 11, 17 and 18, the array substrate includes a second substrate 16 and a planarization layer 17 located on a side of the second substrate 16 close to the color filter substrate, in the display region 1, the second substrate 16 includes devices such as a driver circuit (not shown) and a pixel electrode (not shown) on a side thereof adjacent to the color filter substrate, the planarization layer 17 covers the devices, so that the side of the array substrate close to the color film substrate is relatively flat and has good contact, and in order to extend the path of the external water and oxygen into the display panel and to intercept the first alignment layer, in the encapsulation region 22, a first groove 9 and a second groove 10 are provided on a side of the planarization layer 17 close to the color filter substrate, and of course, the first recess 9 or the second recess 10 may also be a recess through the planarization layer 17 in different embodiments. The arrangement and principle of the first groove 9 and the second groove 10 are described in detail above, and are not described in detail herein.

Alternatively, as shown in fig. 19 (only illustrating the case of including two protruding structures), fig. 19 is a partial top view of another display panel provided in the embodiment of the present invention, as shown in fig. 20, fig. 20 is a schematic cross-sectional view of a first cross-section along the AA 'direction in fig. 19, as shown in fig. 21, and fig. 21 is a schematic cross-sectional view of a second cross-section along the BB' direction in fig. 19, where the array substrate further includes: the at least one protruding structure 18 is arranged on one side, close to the color film substrate, of the planarization layer 17 and located in the frame sealing adhesive 6, and the protruding structure 18 extends along the direction of the first retaining wall 7 or the second retaining wall 11; the orthographic projection of the convex structure 18 on the first plane does not overlap with the orthographic projection of the first retaining wall 7 and the second retaining wall 11 on the first plane and does not overlap with the orthographic projection of the first groove 9 and the second groove 10 on the first plane, wherein the trend direction of the first retaining wall 7 or the second retaining wall 11 is vertical to the first direction X and parallel to the first plane.

Specifically, as shown in fig. 19, 20 and 21, one side of the planarization layer 17 close to the color filter substrate includes two protruding structures 18, and in the first direction X, the two protruding structures 18 are respectively located at two sides of the first retaining wall 7 and extend along the running direction of the first retaining wall 7, an orthographic projection of the first plane of the two protruding structures 18 does not overlap with an orthographic projection of the first retaining wall 7 and the second retaining wall 11 on the first plane, and does not overlap with an orthographic projection of the first groove 9 and the second groove 10 on the first plane, when the above design is adopted, the two protruding structures 18 and the second groove 10 form two stepped shapes, so as to further extend the path of external water and oxygen entering the display panel, so that the water and oxygen blocking capability of the display panel is further improved, and, because the protruding structures 18 can form a stepped shape on one side of the first substrate 3 facing the second substrate 4, when the first alignment layer is made by adopting a coating process, when the first substrate 3 is coated with the alignment liquid on one side close to the second substrate 4, the alignment liquid is cut off at the step, so that the possibility that external water and oxygen enter the display panel along the first alignment layer is reduced to a certain extent, furthermore, the cutting capability of the first alignment layer is stronger due to the two step shapes formed by the two convex structures 18 and the second groove 10, the possibility that the external water and oxygen enter the display panel along the first alignment layer is further reduced, and meanwhile, the two step shapes formed by the two convex structures 18 and the second groove 10 play a better role in preventing liquid crystal from puncturing.

When the first alignment layer is formed by a transfer printing process, the two protruding structures 18 can prevent the first alignment layer from extending too much, so that the possibility that external water and oxygen contact the first alignment layer is reduced, and the possibility that the external water and oxygen enter the display panel along the first alignment layer is further reduced to a certain extent.

Alternatively, as shown in fig. 22 (only the case of including four protrusion structures is illustrated), fig. 22 is a partial top view of another display panel provided in the embodiment of the present invention, as shown in fig. 23, fig. 23 is a schematic cross-sectional view of a first cross-section along the AA 'direction in fig. 22, as shown in fig. 24, and fig. 24 is a schematic cross-sectional view of a second cross-section along the BB' direction in fig. 22, where the protrusion structures 18 include: a first bump structure 181, a second bump structure 182, a third bump structure 183, and a fourth bump structure 184; in at least one of the first cross section and the second cross section, along the first direction X, the first protrusion 181 is located on a side of the first retaining wall 7 close to the second retaining wall 11, the second protrusion 182 is located on a side of the first retaining wall 7 far from the second retaining wall 11, the third protrusion 183 is located on a side of the second retaining wall 11 far from the first retaining wall 7, and the fourth protrusion 184 is located on a side of the second retaining wall 11 close to the first retaining wall 7.

Specifically, as shown in fig. 22, 23 and 24, one side of the planarization layer 17 close to the color filter substrate includes four protruding structures 18, and in the first direction X, the first protruding structure 181 is located on one side of the first retaining wall 7 close to the second retaining wall 11, the second protruding structure 182 is located on one side of the first retaining wall 7 away from the second retaining wall 11, the first protruding structure 181 and the second protruding structure 182 extend along the running direction of the first retaining wall 7, the third protruding structure 183 is located on one side of the second retaining wall 11 away from the first retaining wall 7, the fourth protruding structure 184 is located on one side of the second retaining wall 11 close to the first retaining wall 7, the third protruding structure 183 and the fourth protruding structure 184 extend along the running direction of the second retaining wall 11, when the above design is adopted, the first protruding structure 181, the second protruding structure 182 and the first groove 9 form two step shapes, the third protruding structure 183, the fourth protruding structure 184 and the second groove 10 form two step shapes, therefore, the path of external water and oxygen entering the display panel is further prolonged, the water and oxygen blocking capacity of the display panel is further improved, the first protruding structure 181, the second protruding structure 182 and the first groove 9 form two step shapes, the third protruding structure 183, the fourth protruding structure 184 and the second groove 10 form two step shapes, when the first alignment layer is manufactured by adopting a coating process, the formed step shapes further improve the truncation effect on the first alignment layer, the possibility that the external water and oxygen enter the display panel along the first alignment layer is further reduced, meanwhile, the first protruding structure 181, the second protruding structure 182 and the first groove 9 form two step shapes, and the third protruding structure 183, the fourth protruding structure 184 and the second groove 10 form two step shapes, so that the liquid crystal puncture is prevented.

When the first alignment layer is manufactured by adopting a transfer printing process, the four convex structures can prevent the first alignment layer from extending outwards too much, so that the possibility that external water oxygen contacts with the first alignment layer is reduced, and the possibility that the external water oxygen enters the display panel along the first alignment layer is further reduced to a certain extent.

Alternatively, as shown in fig. 19 to 24, the protruding structures 18 and the third metal layer are disposed on the same layer and have the same material, or the protruding structures 18 and the first insulating layer are disposed on the same layer and have the same material, or each protruding structure 18 includes a first portion and a second portion in a direction perpendicular to the display panel, the first portion is disposed on the same layer and has the same material as the third metal layer, and the second portion is disposed on the same layer and has the same material as the first insulating layer; the third metal layer is located on one side of the planarization layer 17 close to the color filter substrate, and the first insulating layer is located on one side of the third metal layer close to the color filter substrate. Wherein the first insulating layer may be made of at least one material of silicon nitride oxide.

Specifically, as shown in fig. 19 to 24, when the protrusion structure 18 and the third metal layer are disposed on the same layer and have the same material, the protrusion structure 18 and the third metal layer can be simultaneously formed in one process without increasing the number of processes of the display panel, so that the manufacturing process of the display panel is relatively simple, and the thickness of the display panel is not increased, when the protrusion structure 18 and the first insulating layer are disposed on the same layer and have the same material, the protrusion structure 18 and the first insulating layer can be simultaneously formed in one process without increasing the number of processes of the display panel, so that the manufacturing process of the display panel is relatively simple, and the thickness of the display panel is not increased, when the protrusion structure 18 and the third metal layer are disposed on the same layer and have the same material, and when the protrusion structure 18 and the first insulating layer are disposed on the same layer and have the same material, the first part of the protruding structure 18 and the third metal layer can be simultaneously formed in one process, the second part of the protruding structure 18 and the first insulating layer can be simultaneously formed in one process, the number of processes of the display panel is not increased, the manufacturing process of the display panel is relatively simple, and the thickness of the display panel is not increased.

It should be noted that the metal layers on the planarization layer 17 near the color filter substrate may be used as third metal layers, and the insulating layers on the third metal layers near the color filter substrate may be used as first insulating layers, where specifically, which metal layer is used as the third metal layer, and which insulating layer is used as the first insulating layer may be set according to actual conditions, and embodiments of the present invention are not limited specifically.

Optionally, as shown in fig. 25, fig. 25 is a top view of a display panel according to an embodiment of the present invention, where the display panel includes a plurality of touch traces 19 and touch electrodes 20, and the touch traces 19 or the touch electrodes 20 are located on a third metal layer.

Specifically, as shown in fig. 25, a plurality of touch traces 19 and a plurality of touch electrodes 20 form a self-contained touch electrode layer, the plurality of touch electrodes 20 are touch electrode blocks and are distributed in an array, each touch electrode block is electrically connected to at least one touch trace 19, each touch electrode block can form a capacitor, i.e., a self-capacitance channel, with a ground end with zero potential energy, each touch electrode block realizes input of a touch driving signal and output of a touch detection signal via the touch trace 19 electrically connected thereto, the display panel determines a touch position by using the touch driving signal and the touch detection signal, when the protrusion structures 18 and the touch electrodes 20 are the same layer and material, the protrusion structures 18 and the touch electrodes 20 can be formed simultaneously in one process, and since the protrusion structures 18 and the touch electrodes 20 can be formed simultaneously in one process, the number of processes of the display panel is not increased, the manufacturing process of the display panel is relatively simple, the thickness of the display panel cannot be increased, when the protruding structure 18 and the touch trace 19 are on the same layer and are made of the same material, the protruding structure 18 and the touch trace 19 can be formed simultaneously in one process, and the protruding structure 18 and the touch trace 19 can be formed simultaneously in one process, so that the process quantity of the display panel cannot be increased, the manufacturing process of the display panel is relatively simple, and the thickness of the display panel cannot be increased.

Alternatively, as shown in fig. 26, fig. 26 is a partial top view of another display panel provided in the embodiment of the present invention, as shown in fig. 27, fig. 27 is a schematic cross-sectional view of a first cross-section along AA 'in fig. 26, as shown in fig. 28, and fig. 28 is a schematic cross-sectional view of a second cross-section along BB' in fig. 26, where the display panel further includes: the second retaining wall 11 is arranged on one side, close to the first substrate 3, of the second substrate 4, is positioned in the frame sealing glue 6, and in the direction parallel to the first direction X, the second retaining wall 11 is positioned on one side, close to the display area 1, of the first retaining wall 7; the first substrate 3 includes: the cushion blocks comprise a first cushion block 23 and a second cushion block 24, and the first cushion block 23 and the second cushion block 24 are both arranged on one side of the first substrate 3 close to the second substrate 4 and are positioned in the frame sealing glue 6; in the first cross section, in the direction perpendicular to the first plane, the end of the first retaining wall 7 facing the first substrate 3 is in contact with the first pad 23; in the second cross section, an end of the second dam 11 facing the first substrate 3 is in contact with the second pad 24 in a direction perpendicular to the first plane.

Specifically, as shown in fig. 26, 27 and 28, a side of the first base plate 3 adjacent to the second base plate 4 is provided with a plurality of first spacers 23 and a plurality of second spacers 24, a side of the second base plate 4 adjacent to the first base plate 3 is provided with a second retaining wall 11, the plurality of first spacers 23 are sequentially arranged along the strike direction of the first retaining wall 7, and an orthographic projection of the plurality of first spacers 23 on the first plane overlaps the first retaining wall 7, the plurality of second spacers 24 are sequentially arranged along the strike direction of the second retaining wall 11, and an orthographic projection of the plurality of second spacers 24 on the first plane overlaps the second retaining wall 11, and in a direction perpendicular to the first direction X, the first spacers 23 and the second spacers 24 are arranged in an overlapping manner, and, in the first cross section, a side of the first retaining wall 7 facing the first base plate 3 contacts the first spacers 23, and a side of the second retaining wall 11 facing the first base plate 3 does not contact the second spacers 24, in the second cross section, the side of the first retaining wall 7 facing the first substrate 3 is not in contact with the first block 23, and the side of the second retaining wall 11 facing the first substrate 3 is in contact with the second block 24.

Specifically, the overlapped portion of the first retaining wall 7 and the first cushion block 23 is in contact with the first substrate 3 through the first cushion block 23, the non-overlapped portion of the first retaining wall 7 and the first cushion block 23 is spaced from the first substrate 3, similarly, the overlapped portion of the second retaining wall 11 and the second cushion block 24 is in contact with the first substrate 3 through the second cushion block 24, and the non-overlapped portion of the second retaining wall 11 and the second cushion block 24 is spaced from the first substrate 3.

When the above design is adopted, the first retaining wall 7 includes a portion contacting with the first pad 23 and a portion not contacting with the first pad 23, the second retaining wall 11 includes a portion contacting with the second pad 24 and a portion not contacting with the second pad 24, further, in the first direction X, the portion contacting with the first pad 23 in the first retaining wall 7 and the portion not contacting with the second pad 24 in the second retaining wall 11 are correspondingly disposed, the portion not contacting with the first pad 23 in the first retaining wall 7 and the portion contacting with the second pad 24 in the second retaining wall 11 are correspondingly disposed, such design can make the external water oxygen not enter the display panel along a straight line, thereby extending the path when the external water oxygen enters the display panel, further improving the water oxygen blocking capability of the display panel, and because the first pad 23 and the second pad 24 protrude out of the first substrate 3, the step is formed, the alignment layer at the position can be cut off, water vapor is prevented from entering the display panel along the PI, especially when the first alignment layer is manufactured by a coating process, when the first substrate 3 is coated with alignment liquid at the side close to the second substrate 4, the alignment liquid is cut off at the first cushion block 23 and the second cushion block 24, so that the possibility that outside water oxygen enters the display panel along the first alignment layer is reduced to a certain extent, a gap exists between the first retaining wall 7 and the first substrate 3, and a gap also exists between the second retaining wall 11 and the first substrate 3, so that air pressure inside the display panel can be released from the gap, and meanwhile, after the first retaining wall 7, the second retaining wall 11, the first cushion block 23 and the second cushion block 24 adopt the design mode, the liquid crystal can be blocked, and the liquid crystal puncture is prevented.

When the first alignment layer is formed by a transfer printing process, the first cushion block 23 and the second cushion block 24 can prevent the first alignment layer from extending outwards too much, so that the possibility that external water and oxygen contact the first alignment layer is reduced, and the possibility that the external water and oxygen enter the display panel along the first alignment layer is further reduced to a certain extent.

In addition, the supporting pillars in the display area are usually disposed corresponding to the color resists, and the blocking walls are disposed corresponding to the pads in the package area. The supporting columns and the retaining walls can be manufactured at the same layer and the same height through the cushion blocks, so that the supporting columns and the retaining walls can be manufactured simultaneously in one process, and the manufacturing process of the display panel is relatively simple. Preferably, the color resistance is the same as the thickness of the spacer in the direction perpendicular to the display panel.

Alternatively, as shown in fig. 29, fig. 29 is a top view of another display panel provided in the embodiment of the present invention, as shown in fig. 30, fig. 30 is a schematic cross-sectional view of a first cross-section along AA 'in fig. 29, as shown in fig. 31, and fig. 31 is a schematic cross-sectional view of a second cross-section along BB' in fig. 29, where the array substrate further includes: the cushion blocks comprise a third cushion block 25 and a fourth cushion block 26, and the third cushion block 25 and the fourth cushion block 26 are both arranged on one side, close to the second substrate 4, of the planarization layer 17 and are located in the frame sealing glue 6; in the first cross section, in the direction perpendicular to the first plane, the end of the first retaining wall 7 facing the first substrate 3 is in contact with the third pad 25; in the second cross section, an end of the second dam 11 facing the first substrate 3 is in contact with the fourth pad 26 in a direction perpendicular to the first plane.

Specifically, with respect to the design and function of the first retaining wall 7, second retaining wall 11, third block 25 and fourth block 26 as shown in FIGS. 29, 30 and 31, the same as the design and function of the first retaining wall 7, second retaining wall 11, first block 23 and second block 24, as shown in fig. 29, 30 and 31, since the display panel includes the third pad block 25, the fourth pad block 26, the first groove 9 and the second groove 10, when the first alignment layer is formed by a coating process, can perform better truncation on the first alignment layer, can better prevent the first alignment layer from extending outwards too much when the first alignment layer is manufactured by adopting a transfer printing process, therefore, the possibility that the external water oxygen enters the display panel along the first alignment layer is reduced, the path of the external water oxygen entering the display panel is prolonged, and the water oxygen blocking capacity of the display panel is improved.

Alternatively, as shown in fig. 29, 30 and 31, the first grooves 9 and the third blocks 25 are alternately arranged along the direction of the first retaining wall 7, and the second grooves 10 and the fourth blocks 26 are alternately arranged along the direction of the second retaining wall 11, wherein the directions of the first retaining wall 7 and the second retaining wall 11 are perpendicular to the first direction X and parallel to the first plane.

Specifically, as shown in fig. 29, 30 and 31, the side of the planarization layer 17 adjacent to the second substrate 4 includes a plurality of third pads 25, the third pads 25 are arranged along the running direction of the first retaining wall 7, the orthographic projection of the third pads 25 on the first plane overlaps the orthographic projection of the first retaining wall 7 on the first plane, in the direction perpendicular to the first direction X, a first groove 9 and the third pads 25 are arranged in an overlapping manner, the side of the planarization layer 17 adjacent to the second substrate 4 further includes a plurality of fourth pads 26, the fourth pads 26 are arranged along the running direction of the second retaining wall 11, the orthographic projection of the fourth pads 26 on the first plane overlaps the orthographic projection of the second retaining wall 11 on the first plane, in the direction perpendicular to the first direction X, a second groove 10 and a fourth pad 26 are arranged in an overlapping manner, wherein, in the first direction X, the first groove 9 and the fourth groove 26 are arranged correspondingly, the second groove 10 and the third cushion block 25 are correspondingly arranged, the first retaining wall 7 corresponding to the third cushion block 25 and the second retaining wall 11 corresponding to the fourth cushion block 26 and the fourth cushion block 26 can play a role of supporting box thickness, so that the packaging area 22 is kept at a certain box thickness, the third cushion block 25, the fourth cushion block 26, the first retaining wall 7 and the second retaining wall 11 can play a role of liquid crystal penetration, the arrangement mode that the first groove 9 and the fourth cushion block 26 are correspondingly arranged and the second groove 10 and the third cushion block 25 are correspondingly arranged can play a role of cutting off the first alignment layer, the possibility that external water oxygen enters the display panel along the first alignment layer is reduced, the path that the external water oxygen enters the display panel is prolonged, the water oxygen blocking capacity of the display panel is improved, meanwhile, the air pressure in the display panel can be enabled to be enabled, and the space between the second barrier 11 and the first substrate 3 is released.

Alternatively, as shown in fig. 26 to fig. 31, the pads (e.g., the first pad 23 and the second pad 24 included in fig. 26 to fig. 28, or, e.g., the third pad 25 and the fourth pad 26 included in fig. 29 to fig. 31) are all disposed on the same layer and have the same material as the third metal layer, or the pads are all disposed on the same layer and have the same material as the first insulating layer, or, in a direction perpendicular to the display panel, the pads all include a first portion and a second portion, the first portion is disposed on the same layer and has the same material as the third metal layer, the second portion is disposed on the same layer and has the same material as the first insulating layer, the third metal layer is located on a side of the planarization layer 17 close to the color filter substrate, and the first insulating layer is located on a side of the. Wherein the first insulating layer may be made of at least one material of silicon nitride or silicon oxide.

Specifically, the forming manner of the cushion block is the same as that of the film layer and the protruding structure, and details are not repeated here.

Optionally, as shown in fig. 32, fig. 32 is a partial top view of another display panel provided in the embodiment of the present invention, wherein the shape of the orthographic projection of the first groove 9 and/or the second groove 10 on the first plane includes at least one of a rectangle, a circle, an ellipse, a triangle, a polygon and a diamond, wherein the shape of the orthographic projection of any two first grooves 9 in the plurality of first grooves 9 on the first plane is the same or different, and the shape of the orthographic projection of any two second grooves 10 in the plurality of second grooves 10 on the first plane is the same or different.

It should be noted that the specific shape of the orthographic projection of the first groove 9 and/or the second groove 10 on the first plane can be set according to practical needs, and is not particularly limited.

Optionally, the first retaining wall and the second retaining wall are both on the same layer as the support pillar.

Specifically, when the first retaining wall, the second retaining wall and the supporting columns are located on the same layer, the first retaining wall, the second retaining wall and the supporting columns are made of the same material, so that the first retaining wall, the second retaining wall and the supporting columns can be made by one process, the number of processes of the display panel cannot be increased, the manufacturing process of the display panel is relatively simple, and the thickness of the display panel cannot be increased.

It should be noted that, the direction of the retaining wall and the direction of the groove on the first substrate are vertically distributed, when there are a plurality of (not less than 2) retaining walls, for example, the display panel includes more than two retaining walls disposed in the frame glue to surround the display region, and the retaining walls are arranged in the first direction in one time in any of the first and second cross sections. The film layer on the first substrate at the corresponding position of each retaining wall is provided with a groove, and the grooves under different retaining walls are preferably arranged in a staggered manner in the first direction; the liquid crystal display device has the advantages that external water oxygen cannot enter the display panel along a straight line, the water oxygen blocking capacity of the display panel is improved, meanwhile, the retaining wall supports the first substrate, the uneven thickness of the peripheral box is improved, the capacity of preventing liquid crystal puncture and the reliability are improved, meanwhile, the pressure release in a vacuum laminating process is not influenced, and the direction of the groove is the same as the first direction. The transition region can be provided with the same retaining wall, and after the transition region is provided with the same retaining wall, the transition region can have the box thickness same as that of the packaging region, so that the whole box thickness of the display panel is the same, and the appearance of the display panel is improved to a certain extent.

Alternatively, as shown in fig. 33, fig. 33 is a partial top view of another display panel according to an embodiment of the present invention, wherein the first retaining wall 7 includes a plurality of first sub-retaining walls 71, and orthographic projections of the plurality of first sub-retaining walls 71 on the first plane do not overlap; the second retaining wall 11 includes a plurality of second sub-retaining walls 111, and orthographic projections of the plurality of second sub-retaining walls 111 on the first plane do not overlap.

Specifically, as shown in fig. 33, the number, arrangement, etc. of the first sub-barriers 71 and the second sub-barriers 111 are not specifically limited, and the specific situation is set according to actual needs, but the functions of cutting the first alignment layer, releasing the air pressure inside the display panel, keeping the cell thickness of the encapsulation region 22 constant (equal to that of the display region 1), preventing liquid crystal from puncturing, etc. need to be satisfied.

Optionally, as shown in fig. 34, fig. 34 is a partial top view of another display panel according to an embodiment of the present invention, wherein the shape of the orthographic projection of the first sub-retaining wall 71 and/or the second sub-retaining wall 111 on the first plane includes at least one of a rectangle, a circle, an ellipse, a triangle, a polygon and a diamond, and the shape of the orthographic projection of any two first sub-retaining walls 71 in the plurality of first sub-retaining walls 71 on the first plane is the same or different; the shape of the orthographic projection of any two second sub-retaining walls 111 in the plurality of second sub-retaining walls 111 on the first plane is the same or different. The first sub-retaining walls 71 and/or the second sub-retaining walls 111 are arranged along the direction of the retaining wall.

It should be noted that the specific shape of the orthographic projection of the first sub-retaining wall 71 and/or the second sub-retaining wall 111 on the first plane can be set according to actual needs, and is not particularly limited.

As shown in fig. 35, fig. 35 is a schematic view of a display device according to an embodiment of the present invention, where the display device includes the display panel 100. The specific structure and principle of the display panel 100 are the same as those of the above embodiments, and are not described herein again.

The display device according to the embodiment of the present invention may include, but is not limited to, any electronic device having a liquid crystal display function, such as a Personal Computer (PC), a Personal Digital Assistant (PDA), a wireless handheld device, a Tablet Computer (Tablet Computer), a mobile phone, an MP4 player, or a television.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A display panel, comprising a display area and an encapsulation area surrounding the display area;

the display panel further includes:

the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, and the liquid crystal layer is positioned between the first substrate and the second substrate, wherein the first substrate is an array substrate, and the second substrate is a color film substrate;

the first section and the second section are both perpendicular to a first plane and are both parallel to a first direction, the first plane is a plane parallel to the display panel, and the first direction is the width direction of the orthographic projection of the frame sealing glue on the first plane;

the side, facing the second substrate, of the first substrate comprises a plurality of first grooves, and the orthographic projection of the first grooves on the first plane is positioned in the orthographic projection of the frame sealing glue on the first plane;

in the second cross section, an orthographic projection of the first retaining wall on the first plane overlaps with an orthographic projection of the first groove on the first plane.

2. The display panel according to claim 1, wherein a side of the first substrate facing the second substrate further comprises a plurality of second grooves, and an orthogonal projection of the second grooves on the first plane is located within an orthogonal projection of the frame sealing glue on the first plane;

the first cross section comprises at least one second groove, and the orthographic projection of the second groove on the first plane is not overlapped with the orthographic projection of the first retaining wall on the first plane.

3. The display panel of claim 2, wherein the display panel further comprises:

the second retaining wall is arranged on one side, close to the first substrate, of the second substrate, is positioned in the frame sealing glue, and is positioned on one side, close to the display area, of the first retaining wall in the direction parallel to the first direction;

in the first cross section, one end of the second retaining wall facing the first substrate is not in contact with the first substrate, and the orthographic projection of the second retaining wall on the first plane is overlapped with the orthographic projection of the second groove on the first plane;

in the second cross section, one end of the second blocking wall facing the first substrate is in contact with the first substrate.

4. The display panel according to claim 3, wherein the color filter substrate comprises:

the color resistance layer is positioned on one side, close to the array substrate, of the color film substrate, the color resistance layer comprises a plurality of first color resistors and a plurality of second color resistors, the first color resistors are positioned in the display area, the second color resistors are positioned in the encapsulation area, and orthographic projections of the first retaining wall and the second retaining wall on the first plane are respectively positioned in orthographic projections of the second color resistors on the first plane;

the transparent protective layer is positioned on one side, close to the array substrate, of the color resistance layer;

the supporting columns are positioned in the display area and arranged on one side, close to the array substrate, of the transparent protective layer;

wherein the first color resistance and the second color resistance are equal in height in a direction perpendicular to the first plane; the height of the first retaining wall and the height of the second retaining wall are respectively equal to the height of the supporting column.

5. The display panel of claim 3, wherein the array substrate comprises:

the planarization layer is located on one side, close to the color film substrate, of the array substrate, and the first groove and the second groove are located in the planarization layer.

6. The display panel of claim 5, wherein the array substrate further comprises:

the protruding structure is arranged on one side, close to the color film substrate, of the planarization layer and located in the frame sealing glue, and extends along the direction of the first retaining wall or the second retaining wall; the projection structure is in the orthographic projection on the first plane is not overlapped with the orthographic projection on the first plane of the first retaining wall and the second retaining wall, and is not overlapped with the orthographic projection on the first plane of the first groove and the second groove, wherein the direction of the trend is perpendicular to the first direction and parallel to the first plane.

7. The display panel of claim 6, wherein the protrusion structure comprises:

a first bump structure, a second bump structure, a third bump structure and a fourth bump structure;

at least one in first cross-section or in the second cross-section, follow the first direction, first protruding structure is located first barricade is close to one side of second barricade, second protruding structure is located first barricade is kept away from one side of second barricade, third protruding structure is located the second barricade is kept away from one side of first barricade, fourth protruding structure is located the second barricade is close to one side of first barricade.

8. The display panel according to claim 6, wherein the protruding structures are disposed on the same layer and have the same material as the third metal layer, or disposed on the same layer and have the same material as the first insulating layer, or, in a direction perpendicular to the display panel, each of the protruding structures includes a first portion disposed on the same layer and have the same material as the third metal layer and a second portion disposed on the same layer and have the same material as the first insulating layer; the third metal layer is located on one side, close to the color film substrate, of the planarization layer, and the first insulating layer is located on one side, close to the color film substrate, of the third metal layer.

9. The display panel of claim 8, wherein the display panel comprises a plurality of touch traces and touch electrodes, and the touch traces or the touch electrodes are located on the third metal layer.

10. The display panel of claim 1, wherein the display panel further comprises:

the first substrate includes:

the cushion blocks comprise a first cushion block and a second cushion block, and the first cushion block and the second cushion block are both arranged on one side of the first substrate close to the second substrate and are positioned in the frame sealing glue;

in the first cross section, in a direction perpendicular to the first plane, one end of the first retaining wall facing the first substrate is in contact with the first cushion block;

in the second cross section, in a direction perpendicular to the first plane, one end of the second blocking wall facing the first substrate is in contact with the second cushion block.

11. The display panel of claim 7, wherein the array substrate further comprises:

the cushion blocks comprise a third cushion block and a fourth cushion block, and the third cushion block and the fourth cushion block are arranged on one side, close to the second substrate, of the planarization layer and are located in the frame sealing glue;

in the first cross section, in a direction perpendicular to the first plane, one end of the first retaining wall facing the first substrate is in contact with the third cushion block;

in the second cross section, in a direction perpendicular to the first plane, one end of the second blocking wall facing the first substrate is in contact with the fourth cushion block.

12. The display panel of claim 11, wherein the first grooves and the third pads are alternately arranged along the direction of the first retaining walls, and the second grooves and the fourth pads are arranged at intervals along the direction of the second retaining walls, wherein the direction of the first grooves is perpendicular to the first direction and parallel to the first plane.

13. The display panel of claim 11, wherein the spacers are all disposed on the same layer and have the same material as the third metal layer, or the spacers are all disposed on the same layer and have the same material as the first insulating layer, or in a direction perpendicular to the display panel, the spacers each include a first portion and a second portion, the first portion is disposed on the same layer and has the same material as the third metal layer, the second portion is disposed on the same layer and has the same material as the first insulating layer, the third metal layer is located on a side of the planarization layer close to the color filter substrate, and the first insulating layer is located on a side of the third metal layer close to the color filter substrate.

14. The display panel of claim 13, wherein the display panel comprises a plurality of touch traces and touch electrodes, and the touch traces or the touch electrodes are located on the third metal layer.

15. The display panel according to claim 2, wherein the shape of the orthographic projection of the first groove and/or the second groove on the first plane comprises at least one of a rectangle, a circle, an ellipse, a triangle, a polygon and a diamond, wherein the shape of the orthographic projection of any two first grooves in the plurality of first grooves on the first plane is the same or different, and the shape of the orthographic projection of any two second grooves in the plurality of second grooves on the first plane is the same or different.

16. The display panel of claim 4, wherein the first retaining wall and the second retaining wall are both on the same layer as the support pillar.

17. The display panel of claim 3,

the first retaining wall comprises a plurality of first sub-retaining walls, and orthographic projections of the first sub-retaining walls on the first plane are not overlapped;

the second retaining wall comprises a plurality of second sub-retaining walls, and orthographic projections of the second sub-retaining walls on the first plane are not overlapped.

18. The display panel according to claim 17, wherein the shape of the orthographic projection of the first sub-retaining wall and/or the second sub-retaining wall on the first plane comprises at least one of a rectangle, a circle, an ellipse, a triangle, a polygon and a diamond, and the shape of the orthographic projection of any two of the plurality of first sub-retaining walls on the first plane is the same or different; the shape of the orthographic projection of any two of the second sub-retaining walls on the first plane is the same or different.

19. A display device characterized by comprising the display panel according to any one of claims 1 to 18.