CN111474757B

CN111474757B - Display panel and display device

Info

Publication number: CN111474757B
Application number: CN202010361366.7A
Authority: CN
Inventors: 陈丽虹; 洪晓霞; 吴玲; 周秀峰; 沈柏平
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2022-06-17
Anticipated expiration: 2040-04-30
Also published as: CN111474757A

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to improve the uniformity of the thickness of a display panel and reduce the risk of water and oxygen in the external environment invading the display panel. The display panel comprises a light shielding layer, a color resistance layer, a planarization layer and frame glue positioned in the non-display area, wherein the light shielding layer, the color resistance layer and the planarization layer are stacked; the shading layer comprises a first shading structure positioned in the display area and a second shading structure positioned in the non-display area; the first shading structure comprises a plurality of hollow parts, and the second shading structure does not comprise the hollow parts; the color resistance layer comprises a first color resistance structure positioned in the display area and a second color resistance structure positioned in the non-display area; the first color resistor structure fills the hollow part; the second color resistance structure is positioned on one side of the frame glue close to the display area; the length of the orthographic projection of the second color resistance structure in the extending direction of the frame glue closest to the second color resistance structure is larger than the length of the orthographic projection of the first color resistance structure closest to the second color resistance structure in the extending direction of the frame glue closest to the second color resistance structure.

Description

Display panel and display device

[ technical field ] A

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

[ background of the invention ]

The display panel comprises a display area provided with sub-pixels for displaying and a non-display area provided with peripheral circuits and wiring around the display area. In present display panel's design, because display panel has great difference in the rete thickness of display area and non-display area position department, the box thickness homogeneity that leads to display panel receives the influence, and during steam in the external environment also invaded the display area through the non-display area easily, the steam of invasion can react with the material in the display panel, makes produce bad such as garrulous bright spot in the display area, influences display effect.

[ summary of the invention ]

Embodiments of the present invention provide a display panel and a display device, which are used to improve the uniformity of the cell thickness of the display panel and reduce the risk of water and oxygen in the external environment invading into the display panel.

In one aspect, an embodiment of the present invention provides a display panel, including a display area and a non-display area;

the display panel comprises a light shielding layer, a color resistance layer, a planarization layer and frame glue positioned in the non-display area, wherein the light shielding layer, the color resistance layer and the planarization layer are stacked;

the light shielding layer comprises a first light shielding structure positioned in the display area and a second light shielding structure positioned in the non-display area; the first shading structure comprises a plurality of hollow parts, and the second shading structure does not comprise the hollow parts;

the color resistance layer comprises a first color resistance structure positioned in the display area and a second color resistance structure positioned in the non-display area; the first color resistance structure fills the hollow part; the second color resistance structure is positioned on one side of the frame glue close to the display area;

the length of the orthographic projection of the second color resistance structure along the extending direction of the frame glue closest to the second color resistance structure is greater than the length of the orthographic projection of the first color resistance structure closest to the second color resistance structure along the extending direction of the frame glue closest to the second color resistance structure.

In another aspect, an embodiment of the present invention provides a display device, including the display panel described above.

According to the display panel and the display device provided by the embodiment of the invention, the second shading structure and the second color resistance structure are arranged in the non-display area of the display panel, so that the thickness of the color film substrate in the non-display area can be increased by using the second shading structure and the second color resistance structure, and the thickness difference of the color film substrate in the display area and the non-display area is compensated.

Moreover, in the process that water vapor in the external environment invades the display area through the non-display area, the second color resistance structure can be used as a barrier for preventing the water vapor in the external environment from entering the display area, so that the possibility that the water vapor enters the display area can be reduced.

On this basis, in the embodiment of the invention, the length of the orthographic projection of the second color resistance structure in the extending direction of the frame glue closest to the second color resistance structure is greater than the length of the orthographic projection of the first color resistance structure closest to the second color resistance structure in the extending direction of the frame glue closest to the second color resistance structure, so that the second color resistance structure can block the water vapor in the external environment from more positions, the second color resistance structure can protect the display area from more positions, and the possibility that the water vapor in the external environment is transmitted to the display area can be further reduced.

Particularly, when the display panel is applied to vehicle-mounted display, the display panel inevitably works in environments of high temperature, high humidity and the like, so that the reliability of the vehicle-mounted display screen can be ensured by manufacturing the vehicle-mounted display screen by using the display panel provided by the embodiment of the invention. The inventor tests the display panel provided by the embodiment of the invention and the display panel comprising the second color resistance structure and the first color resistance structure which are designed in the same way under the experimental condition of 65 ℃/93RH, and the test result shows that the time of the broken bright spots in the display panel provided by the embodiment of the invention can be prolonged by 140h compared with the display panel with the first color resistance structure and the second color resistance structure which are set in the same way.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is an enlarged view of region Q of FIG. 1;

FIG. 3 is a schematic cross-sectional view along BB' of FIG. 2;

FIG. 4 is another enlarged schematic view of region Q of FIG. 1;

FIG. 5 is a schematic cross-sectional view taken along line CC' of FIG. 4;

FIG. 6 is a schematic cross-sectional view of a display panel according to the related art;

FIG. 7 is a further enlarged view of region Q of FIG. 1;

FIG. 8 is an enlarged schematic view of a portion of a second color-resist structure according to an embodiment of the invention;

FIG. 9 is an enlarged schematic view of a portion of another second color resist structure provided in accordance with an embodiment of the present invention;

FIG. 10 is an enlarged schematic view of a portion of a second color-resist structure according to an embodiment of the invention;

FIG. 11 is a further enlarged view of region Q of FIG. 1;

FIG. 12 is a further enlarged view of region Q of FIG. 1;

FIG. 13 is a further enlarged view of region Q of FIG. 1;

fig. 14 is a schematic diagram of a display device according to an embodiment of the invention.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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 understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, etc. may be used to describe the color resistance structures in the embodiments of the present invention, the color resistance structures should not be limited to these terms. These terms are only used to distinguish color-resist structures located in different regions from each other. For example, the first color resistance structure may also be referred to as a second color resistance structure, and similarly, the second color resistance structure may also be referred to as a first color resistance structure without departing from the scope of embodiments of the present invention.

An embodiment of the present invention provides a display panel, as shown in fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic top view of the display panel provided by the embodiment of the present invention, fig. 2 is an enlarged schematic view of a region Q in fig. 1, and fig. 3 is a schematic cross-sectional view along BB' of fig. 2, where the display panel includes a display area AA and a non-display area NA at least partially surrounding the display area AA.

As shown in fig. 3, the display panel includes a color film substrate 1 and an array substrate 2, which are oppositely disposed, and a sealant 3 and a liquid crystal layer 4 located between the color film substrate 1 and the array substrate 2. The sealant 3 is located in the non-display area NA. The frame glue 3 is used for bonding the color film substrate 1 and the array substrate 2 and sealing the display panel. The display area AA includes the above-described liquid crystal layer 4. As shown in fig. 1, the sealant 3 may be disposed along the extending direction of the non-display area NA, and the sealant 3 surrounds the display area AA therein.

With reference to fig. 3, the color filter substrate 1 includes a light-shielding layer 11, a color resist layer 12 and a planarization layer 13 stacked on the same side of the first substrate 10.

The light-shielding layer 11 includes a first light-shielding structure 111 in the display area AA and a second light-shielding structure 112 in the non-display area NA. The first light shielding structure 111 includes a plurality of hollow portions 1110. The second light shielding structure 112 does not include a hollow portion, i.e., the second light shielding structure 112 is a complete layer structure.

The color resist layer 12 includes a first color resist structure 121 located in the display area AA and a second color resist structure 122 located in the non-display area NA.

As shown in fig. 3, the first color resist structure 121 fills the hollow portion 1110, that is, the first color resist structure 121 can contact the first substrate 10 through the hollow portion 1110. Optionally, as shown in fig. 2, the display area AA may include a plurality of first color resist structures 121, and the plurality of first color resist structures 121 are arranged in an array in the display area AA.

The second color resist structure 122 is in contact with the second light shielding structure 112 near the surface of the first substrate 10. In the non-display area NA, the second color-resisting structure 122 is located on one side of the sealant 3 close to the display area AA, that is, the second color-resisting structure 122 is located between the sealant 3 and the first color-resisting structure 121.

In the embodiment of the present invention, the length of the orthogonal projection of the second color resist structure 122 in the extending direction of the sealant 3 closest to the second color resist structure 122 is greater than the length of the orthogonal projection of the first color resist structure 121 closest to the second color resist structure 122 in the extending direction of the sealant 3 closest to the second color resist structure. The orthographic projections of the first color resist structure 121 and the second color resist structure 122 in the extending direction of the sealant 3 are respectively orthographic projections of the first color resist structure 121 and the second color resist structure 122 on a first plane, wherein the first plane is a plane passing through the sealant 3 and perpendicular to the plane of the display panel.

As described above, when the sealant 3 is configured as a ring structure surrounding the display area AA, for the second photoresist structure 122 located at different positions in the non-display area NA, the extending direction of the sealant 3 closest to the second photoresist structure changes with the position of the second photoresist structure 122. In the case of determining the position of the second photoresist structure 122, the sealant 3 closest to the second photoresist structure is determined, and accordingly, the extending direction of the sealant 3 closest to the second photoresist structure 122 is also determined.

For example, taking the display panel having the quadrangular structure shown in fig. 1 as an example, the non-display area NA may include a first sub non-display area NA1 and a second sub non-display area NA 2. The first sub non-display area NA1 and the display area NA are arranged along the first direction x, and the first sub non-display area NA1 extends along the second direction y. The sealant 3 in the first sub non-display area NA1 extends along the second direction y. The second sub non-display area NA2 and the display area NA are arranged along the second direction y, the second sub non-display area NA2 extends along the first direction x, and the sealant 3 located in the second sub non-display area NA2 extends along the first direction x.

For the second color resist structure 122 located at the position C11 in the first sub non-display area NA1, the sealant 3 located closest to the second color resist structure is located at the position C12, and the extending direction of the sealant 3 located at the position C12 is the second direction y. For the second color resist structure 122 located at the position C21 in the second sub non-display area NA2, the sealant 3 located closest to the second color resist structure is located at the position C22, and the extending direction of the sealant located at the position C22 is the first direction x.

In addition, when a plurality of first color resist structures are disposed in the display area AA, for the second color resist structures 122 located at different positions in the non-display area NA, the position of the first color resist structure closest to the second color resist structure 122 also changes with the position of the second color resist structure. In the case of a position determination of the second color resistor structure 122, the first color resistor structure closest thereto is determined. In the case of determining the position of the first color resist structure, the position and the extending direction of the sealant 3 closest to the first color resist structure are also determined. As shown in fig. 1, for the second color resist structure 122 located at the position C11 in the first sub non-display area NA1, the first color resist structure (not shown in fig. 1) closest thereto is located at the position C13. The sealant 3 closest to the first color resist structure at the position C13 is located at a position C12. For the second color resist structure 122 located at the position C21 in the second sub non-display area NA2, the first color resist structure (not shown in fig. 1) closest thereto is located at the position C23. The sealant 3 closest to the first color resist structure at the position C23 is located at the position C22.

As shown in fig. 2, for the second color resist structure 122 located in the first sub non-display area NA1, the length of the orthogonal projection of the second color resist structure in the extending direction of the frame glue 3 closest to the second color resist structure is d 21. The length of the orthogonal projection of the first color resist structure 121 closest to the second color resist structure 122 in the extending direction of the frame glue 3 closest to the first color resist structure is d 11. d11 and d21 satisfy d21 > d 11.

For the second color resist structure 122 located in the second sub non-display area NA2, the length of the orthogonal projection in the extending direction of the nearest frame glue 3 is d 22. The length of the orthogonal projection of the first color resist structure 121 closest to the second color resist structure 122 in the extending direction of the frame glue 3 closest to the first color resist structure is d 12. d12 and d22 satisfy d22 > d 12.

In the preparation of the color filter substrate 1, as shown in fig. 3, a first substrate 10 is provided first, and then a light-shielding layer 11 including a first light-shielding structure 111 and a second light-shielding structure 112 is formed on one side of the first substrate 10. Specifically, the first light shielding structure 111 and the second light shielding structure 112 may be formed using a resin doped with a black pigment or other light shielding material. In fabricating the first and second

light shielding structures

111 and 112, a light shielding material is first coated on one side of the first substrate 10. Then, in the display area AA, patterning processes such as exposure and etching are performed on the coated light-shielding material, and the light-shielding material at a part of the position is removed to form a hollow portion 1110 at a corresponding position, that is, the first light-shielding structure 111 is a Black Matrix (BM) including the hollow portion 1110. In the non-display area NA, the patterning process is not performed on the light-shielding layer 11, so that the light-shielding layer 11 in the non-display area NA remains as a complete layer structure.

Then, a color resist layer 12 including a first color resist structure 121 and a second color resist structure 122 is formed on a side of the light shielding layer 11 away from the first substrate 10. For example, the first color resist structure 121 may include color resists having a plurality of different colors, for example, the first color resist structure 121 may include a red color resist R, a green color resist G, a blue color resist B, and the like at different positions. The second color resist structure 122 includes any one or more of a red color resist R, a green color resist G, and a blue color resist B. The color resists with different colors of emergent light are represented by different filling patterns in fig. 2 and 3. In the embodiment of the invention, the first color resist structure 121 and the second color resist structure 122 having the same emergent light color can be formed by the same process. The first color resist structure 121 is formed corresponding to the hollow portion 1110 of the first light-shielding structure 111, that is, the first color resist structure 121 is in contact with the first substrate 10 on the other side of the light-shielding layer 11. When the second color resist structure 122 is formed, the second color resist structure 122 is in contact with a side of the second light shielding structure 112 away from the first substrate 10.

After the color resist layer 12 including the first color resist structure 121 and the second color resist structure 122 is formed, the planarization layer 13 is formed on the side of the color resist layer 12 away from the light-shielding layer 11. Illustratively, the planarization layer 13 may be an Optically Clear Adhesive (OCA). The planarization layer 13 may be used to protect the first color resist structure 121 and the second color resist structure 122, and simultaneously, the surface of the color filter substrate 1 may be planarized.

For example, a pixel electrode and a common electrode may be disposed in the display panel at a position corresponding to the first color resist structure 121. The pixel electrode may not be disposed at a position corresponding to the second color resist structure 122, that is, a dummy pixel that does not emit light may be formed at a position where the second color resist structure 122 is located.

In the display panel provided in the embodiment of the invention, the second light-shielding structure 112 and the second color resist structure 122 are arranged in the non-display area NA of the display panel, so that the thickness of the color film substrate 1 in the non-display area NA can be increased by using the second light-shielding structure 112 and the second color resist structure 122, and the thickness difference of the color film substrate 1 in the display area AA and the non-display area NA is made up.

Moreover, in the process that the water vapor in the external environment invades the display area AA through the non-display area NA, the second color-resisting structure 122 can serve as a barrier for blocking the water vapor in the external environment from entering the display area AA, so that the possibility that the water vapor enters the display area AA can be reduced.

On this basis, in the embodiment of the invention, by making the length of the orthographic projection of the second color resistance structure 122 in the extending direction of the frame glue 3 closest to the second color resistance structure 122 larger than the length of the orthographic projection of the first color resistance structure 121 closest to the second color resistance structure 122 in the extending direction of the frame glue 3 closest to the second color resistance structure, the second color resistance structure 122 can block the water vapor in the external environment from more positions, so that the second color resistance structure 122 can protect the display area AA from more positions, and the possibility that the water vapor in the external environment is transmitted to the display area AA can be further reduced.

Particularly, when the display panel is applied to vehicle-mounted display, the display panel inevitably works in environments of high temperature, high humidity and the like, so that the reliability of the vehicle-mounted display screen can be ensured by manufacturing the vehicle-mounted display screen by using the display panel provided by the embodiment of the invention. The inventor tests the display panel provided by the embodiment of the invention and the display panel comprising the second color resistance structure 122 and the first color resistance structure 121 which are designed in the same way under the experimental condition of 65 ℃/93RH, and the test result shows that the time of the occurrence of the broken bright spots in the display panel provided by the embodiment of the invention can be prolonged by 140h compared with the display panel with the first color resistance structure 121 and the second color resistance structure 122 which are designed in the same way.

For example, in the embodiment of the present invention, the first color resist structure 121 may be designed to be rectangular as shown in fig. 2, the second direction y where the long side of the first color resist structure 121 is located may be regarded as the length direction of the first color resist structure 121, and the first direction x where the short side of the first color resist structure 121 is located may be regarded as the width direction of the first color resist structure 121.

Optionally, on the basis of ensuring that the length of the orthogonal projection of the second color resist structure 122 in the extending direction of the nearest sealant 3 is greater than the length of the orthogonal projection of the first color resist structure 121 closest to the second color resist structure 122 in the extending direction of the nearest sealant 3, the sizes of the first color resist structures 121 having the same light emission color in the display area AA in the same direction may be set to be the same. Alternatively, all the first color resist structures 121 in the display area AA may have the same size in the same direction. In this way, when the plurality of first color resists 121 are all designed to be rectangular as shown in fig. 2, the length of the orthographic projection of the second color resist 122 in the extending direction of the sealant 3 closest to the first color resist 121 can be greater than the length of the orthographic projection of all the first color resist 121 in the extending direction of the sealant 3 closest to the first color resist.

For example, in the embodiment of the present invention, the number of the second color-resisting structures 122 may also be set to be at least two, and the arrangement direction of the at least two second color-resisting structures 122 is set to intersect with the extending direction of the sealant 3 closest to any one of the second color-resisting structures 122, so that the at least two second color-resisting structures 122 form a multiple barrier for blocking the intrusion of the external moisture, thereby forming multiple protection for the structures in the display area AA, and further improving the reliability of the display panel. For example, the arrangement direction of at least two second photoresist structures 122 and the extending direction of the sealant 3 with the closest distance from any one of the second photoresist structures 122 may be set to be perpendicular to each other. As shown in fig. 4 and 5, fig. 4 is another enlarged schematic view of a region Q in fig. 1, and fig. 5 is a schematic cross-sectional view along CC' of fig. 4, wherein a length of an orthogonal projection of any one of the second color resist structures 122 in the extending direction of the nearest sealant 3 is greater than a length of an orthogonal projection of the nearest first color resist structure 121 in the extending direction of the nearest sealant 3.

Illustratively, as shown in fig. 2, 3, 4 and 5, in the embodiment of the present invention, two adjacent first color resists 121 may contact each other.

With continued reference to fig. 4 and 5, along the arrangement direction of the second color-resisting structures 122, a first gap 1221 is formed between two adjacent second color-resisting structures 122. In the embodiment of the invention, the first gap 1221 is arranged between two adjacent second color resist structures 122, so that when the planarization layer 13 is formed on the side of the color resist layer 12 away from the light shielding layer 11, as shown in fig. 5, the planarization layer 13 can fill the first gap 1221.

In the process of implementing the present invention, the inventor researches and discovers that, as shown in fig. 6, fig. 6 is a schematic cross-sectional view of a display panel in the related art, wherein the second color resist structure 122 ' located in the non-display area NA ' and the first color resist structure 121 ' located in the display area AA ' are of the same design, and two adjacent first color resist structures 121 ' are in contact with each other. Two adjacent second color-resisting structures 122' are also in contact with each other without including a gap therebetween. Due to the different structures of the light-shielding layer 11 'in the display area AA' and the non-display area NA ', the light-shielding layer 11' includes the hollow portion 1110 'in the display area AA', and the light-shielding layer 11 'does not include the hollow portion in the non-display area NA'. Therefore, when the first color resist structure 121 'and the second color resist structure 122' are formed, the first color resist structure 121 'can fill the hollow portion 1110', that is, the first color resist structure 121 'is in contact with the upper surface of the substrate 10', and the second color resist structure 122 'is in contact with the light-shielding layer 11'. After the formation of the first color-resisting structure 121 'and the second color-resisting structure 122', the surfaces of the first color-resisting structure 121 'and the second color-resisting structure 122' far away from the substrate 10 'will be at different levels, with a height difference h' therebetween. Further, after the optical adhesive layer 13 ' is coated, the surfaces of the optical adhesive layer 13 ' located in the display area NA ' and the optical adhesive layer 13 ' located in the non-display area NA ' far from the first substrate 10 ' will be located at different levels, and a height difference h ' exists between the two surfaces. That is, there is a step difference between the display area NA 'and the non-display area NA' in the color filter substrate. The liquid crystal is accumulated at the position of the step difference, and the yellowing phenomenon is easy to occur during the display.

Under the condition that the coating process of the planarization layer 13 is not changed, by adopting the manner provided by the embodiment of the present invention, as shown in fig. 5, a part of the planarization layer 13 can be filled in the first gap 1221, so that after the planarization layer 13 is coated, the total thickness of the multilayer film layers including the light-shielding layer 11, the color-resist layer 12 and the planarization layer 13, which are located in the non-display area NA, is reduced, the thicknesses of the color film substrate 1 in the display area AA and the non-display area NA tend to be consistent, thereby avoiding a step difference between the display area AA and the non-display area NA, further avoiding accumulation of liquid crystal at a step difference position, and ensuring the display effect of the display panel.

Optionally, in the embodiment of the present invention, a dimension of the second color resist structure 122 along a direction perpendicular to the extending direction of the nearest sealant 3 may be smaller than a dimension of the first color resist structure 121 nearest to the second color resist structure 122 along a direction perpendicular to the extending direction of the nearest sealant 3.

For example, as shown in fig. 2 and 4, in the first sub non-display area NA1, the extending direction of the sealant 3 closest to the second color resist structure 122 is the second direction y, the first direction x is perpendicular to the second direction y, and the size of the second color resist structure 122 along the first direction x is W21. The dimension W11 of the first color resist structure 121 closest to the second color resist structure 122 along the first direction x is W21 < W11.

In the second sub non-display area NA2, the extending direction of the sealant 3 closest to the second color resist structure 122 is the first direction x, and the dimension of the second color resist structure 122 along the second direction y is W22. The dimension of the first color resist structure 121 closest to the second color resist structure 122 along the second direction y is W12, W22 < W12.

When only one second color resist structure 122 is disposed in a direction perpendicular to the extending direction of the sealant 3 closest to the second color resist structure 122 as shown in fig. 2 and 3, the planarization layer 13 may fill the space on both sides of the second color resist structure 122, so as to reduce the thickness of the planarization layer 13 contacting the surface of the second color resist structure 122 on the side away from the first substrate 10. Taking the orientation shown in fig. 3 as an example, the lower surface of the planarization layer 13 in contact with the surface of the second color resist structure 122 on the side away from the first substrate 10 can be at the same level as the lower surface of the planarization layer 13 located in the display area AA.

Or, as shown in fig. 4 and 5, when a plurality of second color-resisting structures 122 are disposed in the direction perpendicular to the extending direction of the sealant 3 closest to the second color-resisting structures 122, the embodiment of the present invention can form the first gap 1221 between two adjacent second color-resisting structures 122 arranged in the direction perpendicular to the extending direction of the sealant 3 closest to the second color-resisting structures 122 by reducing the size of the second color-resisting structures 122 in the direction perpendicular to the extending direction of the sealant 3 closest to the second color-resisting structures 122, and on the basis of using the second color-resisting structures 122 to block moisture in the external environment from invading the display area AA, the display area AA and the non-display area NA can be prevented from having a step difference, so that accumulation of liquid crystal at a step difference position can be avoided, and the display effect of the display panel can be ensured.

Optionally, a dimension W2 of the second color resist structure 122 along a direction perpendicular to the extending direction of the nearest sealant 3, and a dimension W1 of the first color resist structure 121 closest to the second color resist structure 122 along a direction perpendicular to the extending direction of the nearest sealant 3 satisfy: 0.3W1 is not less than W2 is not less than 0.8W 1. Specifically, as shown in fig. 2 and 4, in the first sub non-display area NA1, a dimension W2 of the second color resist structure 122 in a direction perpendicular to the extending direction of the nearest sealant 3 is denoted as W21, and a dimension W1 of the first color resist structure 121 nearest to the second color resist structure 122 in a direction perpendicular to the extending direction of the nearest sealant 3 is denoted as W11. In the second sub non-display area NA2, a dimension W2 of the second color resist structure 122 in a direction perpendicular to the extending direction of the nearest sealant 3 is denoted as W22, and a dimension W1 of the first color resist structure 121 in the nearest second color resist structure 122 in a direction perpendicular to the extending direction of the nearest sealant 3 is denoted as W12.

In the embodiment of the present invention, by setting W2 to be equal to or greater than 0.3W1, the width of the first color resist structure 121 can be prevented from being set too narrow, so that the supporting effect of the first color resist structure 121 on the display panel can be ensured. Moreover, in the embodiment of the invention, by setting W2 to be equal to or less than 0.8W1, the size of the first gap 1221 between two adjacent second color resist structures 122 can be ensured, and on the basis of ensuring the supporting effect of the first color resist structure 121 on the display panel, the first gap 1221 can accommodate a certain amount of the planarization layer 13, so that the thicknesses of the film layers in the display area AA and the non-display area NA tend to be consistent, and the step difference between the display area AA and the non-display area NA is reduced or eliminated.

When at least two second color resist structures 122 are disposed, in addition to the at least two second color resist structures 122 disposed to be arranged along the extending direction perpendicular to the nearest sealant 3 as shown in fig. 4, as shown in fig. 7, fig. 7 is still another enlarged schematic view of the area Q in fig. 1, in the embodiment of the invention, at least two second color resist structures 122 may also be disposed to be arranged along the extending direction of the nearest sealant 3, and a second gap 1222 is provided between two adjacent second color resist structures 122 along the extending direction of the nearest sealant 3.

In designing the second color resist structure 122 and the sealant 3, as described above, the second color resist structure 122 and the sealant 3 may be disposed to extend along the edge of the display panel, that is, along the extending direction of the non-display area NA of the display panel. If the display panel is a special-shaped display panel with an irregular shape, since the direction of the edge of the display panel may include more corners or arcs, the second color resist structure 122 may be extended only in a single direction or an arc direction with a smaller curvature in the extending direction of the non-display area NA, avoiding a position where the extending direction of the non-display area NA is changed greatly, that is, the second color resist structure 122 may be terminated at a part of the position to form the second gap 1222. Most of the second color-resisting structure 122 can be designed into a long strip shape, so that the design of the second color-resisting structure 122 with an irregular shape is reduced, and the manufacturing difficulty of the second color-resisting structure 122 is reduced.

For example, as shown in fig. 1 and 7, for the rectangular display panel shown in fig. 1, the second gap 1222 may be disposed corresponding to a corner of the rectangular panel.

When the display panel is designed to have another irregular shape including an R-corner or a notch (notch), the second gap 1222 may be disposed corresponding to the R-corner or the corner at the notch.

Of course, the second gap 1222 may be disposed corresponding to a region where one or more straight edges of the display panel are located, for example, as shown in fig. 7, for a rectangular display panel, the second gap 1222 may be disposed corresponding to the straight edges of the display panel.

Illustratively, as shown in fig. 7, the dimension d of the second gap 1222 between two adjacent second color-resisting structures 122 satisfies: d is more than 0 and less than or equal to 10 mu m, wherein d is the longest straight-line distance between two adjacent second color-resisting structures 122. The arrangement of the embodiment of the present invention can avoid that the second gap 1222 between the second color-resisting structures 122 is arranged to be too large to affect the blocking capability of the second color-resisting structures 122 for the moisture in the external environment.

For example, the shape of the second color resist structure 122 may be designed in various ways, for example, at a local position, the second color resist structure 122 may be arranged in a straight line extending in a single direction according to an embodiment of the present invention. Alternatively, as shown in fig. 2, 4 and 7, in the embodiment of the present invention, the extending direction of the second color resist structure 122 may be set to be the same as the extending direction of the nearest sealant 3. It can be seen that, when the second color-resisting structure 122 is configured as a strip shape as shown in fig. 2, 4 and 7, the dimension of the second color-resisting structure 122 along the direction perpendicular to the extending direction of the frame glue 3 closest to the second color-resisting structure can be understood as the width of the second color-resisting structure 122. The length of the orthogonal projection of the second color resist structure 122 in the extending direction of the frame glue 3 closest to the second color resist structure can be the length of the second color resist structure 122.

Alternatively, embodiments of the present invention may also provide the second color-resisting structure 122 to include a set of a plurality of broken lines or curved lines extending in different directions.

As shown in fig. 8 and 9, fig. 8 is an enlarged schematic view of a partial position of a second color-resisting structure provided in an embodiment of the present invention, and fig. 9 is an enlarged schematic view of a partial position of another second color-resisting structure provided in an embodiment of the present invention, in which the second color-resisting structure 122 is a broken line shape and includes a plurality of sub-structures extending in different directions.

Alternatively, the second color-resisting structure 122 may be configured to have a curved shape according to an embodiment of the present invention, for example, as shown in fig. 10, fig. 10 is an enlarged schematic view of a partial position of another second color-resisting structure provided by an embodiment of the present invention, and the second color-resisting structure 122 may be designed to have a serpentine shape.

For example, in the embodiment of the present invention, the second color-resisting structure 122 may at least partially surround the display area AA, so that the length of the second color-resisting structure 122 in the extending direction of the frame adhesive 3 closest to the display area AA is as long as possible, so as to block the moisture in the external environment from multiple positions, and the second color-resisting structure 122 can protect the display area NA from multiple positions, so as to further reduce the possibility that the moisture in the external environment is transmitted into the display area NA.

Alternatively, as shown in fig. 1, the second color resist structure 122 is a ring-shaped structure surrounding the display area NA. The second color resist structure 122 disposed in a ring shape can surround the display area NA therein to adsorb impurities such as moisture transferred from various positions on the periphery of the display area NA to the display area NA.

Optionally, the display panel provided in the embodiment of the present invention further includes a support layer. The support layer is located on the side of the planarization layer 13 remote from the color-resist layer 12. As shown in fig. 2, 3, 4 and 5, the support layer includes a first support column 141 positioned at the display area AA and a support 140 positioned at the non-display area NA. As shown in fig. 3 and 5, the orthographic projection of the first support column 141 on the plane of the display panel is located between the orthographic projections of the two adjacent hollow-out portions 1110 on the plane of the display panel, so that the box thickness of the display panel is maintained by supporting the display panel by the first support column 141, and the influence of the arrangement of the first support column 141 on the light emitted to the first color resist structure 121 can be avoided. The supporting member 140 can support the display panel together with the second light shielding structure 112 and the second color resist structure 122 located in the non-display area NA.

For example, in the embodiment of the present invention, the orthographic projection of the first support column 141 on the plane of the display panel may be a block structure, that is, the size of the orthographic projection of the first support column 141 on the plane of the display panel in different directions in the plane of the display panel tends to be consistent. The orthographic projection of the supporting member 140 on the plane of the display panel is a strip structure, that is, the size of the orthographic projection of the supporting member 140 on the plane of the display panel in a certain direction in the plane of the display panel is obviously larger than the size of the supporting member in other directions, and the larger direction is the length direction of the supporting member 140. As shown in fig. 2 and 4, the support 140 has a length greater than that of the first support column 141. The length of the supporting member 140 is the length of the orthogonal projection of the supporting member 140 on the plane of the display panel, and the length of the first supporting column 141 may be the dimension of the first supporting column 141 along the length direction of the supporting member 140. In the embodiment of the present invention, the length of the first supporting column 141 is set to be longer, so that the supporting member 140 can be used to support the portion of the display panel located in the non-display area NA, and meanwhile, the supporting member 140 can also be used as a retaining wall for preventing water vapor in the external environment from invading the display area AA, so that the supporting member 140 and the second color resist structure 122 together play a role in blocking water vapor invasion.

For example, when the supporting member 140 and the first supporting column 141 are disposed, the height of the supporting member 140 located in the non-display area NA may be set to be greater than or equal to the height of the first supporting column 141 located in the display area AA, so that moisture invading at a plurality of positions in the thickness direction of the display panel may be blocked by the supporting member 140.

Alternatively, the first supporting columns 141 located in the display area AA may include a Main supporting column (Main PS) having a relatively high height, or may include a Sub PS having a relatively small height. After a color film substrate of the display panel is attached to the array substrate, the array substrate is pressed to be supported by a main supporting column, and the array substrate is not supported by an auxiliary supporting column. Under the normal working environment of the display panel, the main supporting column can always support the display panel. When display panel receives external pressure, the support intensity of display panel can be increased through propping against array substrate to the supplementary support column, avoids display panel impaired after receiving external force oppression. In the present embodiment, the height of the supporting member 140 may be the same as that of the main supporting pole.

Optionally, in the embodiment of the present invention, the position of the supporting element 140 may have a variety of different designs, for example, as shown in fig. 2 and fig. 3, the orthographic projection of the supporting element 140 on the plane of the display panel may be located between the orthographic projection of the sealant 3 on the plane of the display panel and the orthographic projection of the second color resist structure 122 on the plane of the display panel.

Alternatively, as shown in fig. 4 and fig. 5, the orthographic projection of the supporting member 140 on the plane of the display panel may be located on a side of the orthographic projection of the second color-resisting structure 122 on the plane of the display panel, which is close to the display area AA.

Alternatively, as shown in fig. 11, fig. 11 is another enlarged schematic view of the region Q in fig. 1, in the embodiment of the present invention, the orthographic projection of the supporting member 140 on the plane of the display panel is located on one side of the orthographic projection of the sealant 3 on the plane of the display panel, which is far away from the display area AA, so that the moisture in the external environment is blocked by the supporting member 140 before invading into the sealant 3.

Alternatively, as shown in fig. 12, fig. 12 is still another enlarged schematic view of the region Q in fig. 1, when a plurality of second color resist structures 122 are disposed along a direction perpendicular to the extending direction of the nearest sealant 3, in the embodiment of the present invention, the orthographic projection of the supporting member 140 on the plane of the display panel may also be disposed between the orthographic projections of two adjacent second color resist structures 122 on the plane of the display panel, that is, the supporting member 140 is disposed corresponding to the first gap 1221.

Optionally, when a plurality of supporting members 140 are disposed in the non-display area NA, the supporting members 140 may be disposed in at least any two positions according to the embodiment of the present invention.

For example, as shown in fig. 13, fig. 13 is a further enlarged schematic view of a region Q in fig. 1, in which a portion of the supporting element 140 is located on a side of the sealant 3 away from the display area AA, another portion of the supporting element 140 is located between the sealant 3 and the second color-resisting structure 122, a portion of the supporting element is located on a side of the second color-resisting structure 122 close to the display area AA, and another portion of the supporting element is located between adjacent second color-resisting structures 122.

When the second color resist structures 122 and the supporting members 140 located in the non-display area NA are disposed, the number of the second color resist structures 122 and the number of the supporting members 140 are not limited in the embodiment of the present invention, as long as the second color resist structures 122 and the supporting members 140 can support the display panel and block moisture in the external environment.

For example, when a plurality of second color resist structures 122 are arranged in a direction perpendicular to the extending direction of the sealant 3, a supporting member 140 may be disposed at every certain number of second color resist structures 122, for example, the number ratio of the second color resist structures 122 to the supporting member 140 may be set to 1: N, where N is an integer greater than or equal to 2.

Or, in the embodiment of the present invention, the orthogonal projection of the supporting member 140 on the plane where the display panel is located may be at least partially overlapped with the second color resist structure 122, so as to narrow the width of the non-display area where the supporting member 140 and the second color resist structure 122 are located.

For example, as shown in fig. 7 and 13, when the supporting member 140 is disposed between the sealant 3 and the second color-resisting structure 122, the embodiment of the invention may make the distance L1 between the supporting member 140 and the sealant 3 greater than the distance L2 between the supporting member 140 and the second color-resisting structure 122, so that the supporting member 140 can better play a role in blocking the intrusion of water vapor. For example, L1 can be 200 μm and L2 can be 50 μm.

For example, as shown in fig. 7, when the second color resist structures 122 are disposed as at least two structures arranged in the extending direction of the nearest sealant 3, in the embodiment of the present invention, a second supporting pillar 142 located in the non-display area NA is further disposed in the supporting layer, and the front projection of the second supporting pillar 142 on the plane of the display panel is located between the front projections of the two adjacent second color resist structures 122 arranged in the extending direction of the nearest sealant 3 on the plane of the display panel. That is, the second supporting columns 142 are disposed corresponding to the second gap 1222 to secure a cell thickness of the non-display area of the display panel.

Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 14, fig. 14 is a schematic view of the display device provided by the embodiment of the present invention, wherein the display device includes the display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 14 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, a television, or a vehicle-mounted display screen.

According to the display device provided by the embodiment of the invention, the second shading structure and the second color resistance structure are arranged in the non-display area of the display panel, so that the thickness of the color film substrate in the non-display area can be increased by using the second shading structure and the second color resistance structure, and the thickness difference of the color film substrate in the display area and the non-display area is compensated.

In addition, in the process that water vapor in the external environment invades the display area through the non-display area, the second color resistance structure can be used as a barrier for preventing the water vapor in the external environment from entering the display area, and therefore the possibility that the water vapor enters the display area can be reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A display panel includes a display region and a non-display region;

the color resistance layer comprises a first color resistance structure positioned in the display area and a second color resistance structure positioned in the non-display area; the first color resistor structure fills the hollow part; the second color resistance structure is positioned on one side of the frame glue close to the display area;

the length of the orthographic projection of the second color resistance structure in the extending direction of the frame glue closest to the second color resistance structure is greater than the length of the orthographic projection of the first color resistance structure closest to the second color resistance structure in the extending direction of the frame glue closest to the second color resistance structure

The display panel further comprises a support layer; the support layer is positioned on one side of the planarization layer, which is far away from the color resistance layer;

the supporting layer comprises a first supporting column positioned in the display area and a supporting piece positioned in the non-display area;

the orthographic projection of the first supporting column on the plane where the display panel is located between the orthographic projections of the two adjacent hollow parts on the plane where the display panel is located;

along the extending direction of the frame glue closest to the frame glue, the number of the second color resistance structures is at least two, and a second gap is formed between every two adjacent second color resistance structures;

the second gap d between two adjacent second color-resisting structures satisfies the following conditions: d is more than 0 and less than or equal to 10 mu m.

2. The display panel according to claim 1,

the number of the second color resistance structures is at least two, and the arrangement direction of the at least two second color resistance structures is intersected with the extending direction of the frame glue with the shortest distance from any one second color resistance structure.

3. The display panel according to claim 2,

a first gap is formed between every two adjacent second color resistance structures; the planarization layer fills the first gap.

4. The display panel according to claim 1,

the extending direction of the second color resistance structure is the same as the extending direction of the frame glue closest to the second color resistance structure.

5. The display panel according to claim 1,

the size of the second color resistance structure along the direction perpendicular to the extending direction of the frame glue closest to the second color resistance structure is smaller than the size of the first color resistance structure closest to the second color resistance structure along the direction perpendicular to the extending direction of the frame glue closest to the second color resistance structure.

6. The display panel according to claim 1,

a dimension W2 of the second color resist structure along a direction perpendicular to the extending direction of the sealant closest to the second color resist structure, and a dimension W1 of the first color resist structure closest to the second color resist structure along a direction perpendicular to the extending direction of the sealant closest to the second color resist structure satisfy: 0.3W1 is not less than W2 is not less than 0.8W 1.

7. The display panel according to claim 1,

the second color-resist structure at least partially surrounds the display area.

8. The display panel according to claim 1,

the length of the support member is greater than the length of the first support column.

9. The display panel according to claim 1,

the support piece is positioned on one side of the frame glue away from the display area;

and/or the presence of a gas in the atmosphere,

the support piece is positioned between the frame glue and the second color resistance structure;

and/or the presence of a gas in the atmosphere,

the support is located on one side, close to the display area, of the second color-resisting structure.

10. The display panel according to claim 1,

the support piece is located between the frame glue and the second color resistance structure, and the distance between the support piece and the frame glue is larger than the distance between the support piece and the second color resistance structure.

11. The display panel according to claim 1,

the height of the supporting piece is greater than or equal to that of the first supporting column.

12. The display panel according to claim 1,

the supporting layer further comprises a second supporting column, the second supporting column is located in the non-display area, and the orthographic projection of the second supporting column on the plane where the display panel is located between the orthographic projections of two adjacent second color resist structures in the extending direction of the frame glue on the plane where the display panel is located.

13. The display panel according to claim 1,

the second color resistance structure comprises any one or more of a red color resistance, a green color resistance and a blue color resistance.

14. A display device characterized by comprising the display panel according to any one of claims 1 to 13.