Display panel and display device

Abstract

The application relates to a display panel and a display device; the display panel comprises an array substrate, a cover plate, a plurality of color resistance blocks and a black matrix; the cover plate is arranged opposite to the array substrate; the plurality of color resistance blocks are arranged on one side of the cover plate close to the array substrate; the black matrix is arranged on one side of the cover plate close to the array substrate, and the black matrix comprises a light shielding part arranged between adjacent color resistance blocks; wherein a groove is arranged on one side of the light shielding part away from the cover plate, and part of the color resistance blocks are arranged on one side of the light shielding part away from the cover plate and located in the groove; the application can improve the spreading condition of the cover film layer on the color resistance block and the black matrix layer, improve the thickness uniformity of the cover film layer, reduce the influence of the cover film layer on the light emission uniformity of the display panel due to the non-uniform thickness, and improve the light emission uniformity of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] Organic light emitting diode display (OLED) has many advantages such as self-luminous, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide temperature range, flexible display, large area full color display and the like, and is widely applied in the fields of display, illumination and smart wear.

[0003] The OLED display panel includes an array substrate, an encapsulation cover plate and a filling glue layer between the array substrate and the encapsulation cover plate, and a color film layer can be arranged on the encapsulation cover plate to realize the functions of light filtering and anti-reflection, the color film layer includes a plurality of color resist blocks and a black matrix layer surrounding the plurality of color resist blocks, and the filling glue layer covers the plurality of color resist blocks and the black matrix layer; part of the color resist blocks extends to the black matrix layer, and thus the protrusion height is large at the position where the color resist blocks and the black matrix layer overlap, which leads to poor spreading and thickness uniformity of the filling glue layer, and thus affects the light emission uniformity of the display panel. SUMMARY

[0004] Embodiments of the present application provide a display panel and a display device, which can improve the thickness uniformity of the filling glue and thus improve the light emission uniformity of the display panel.

[0005] Embodiments of the present application provide a display panel, which includes:

[0006] an array substrate;

[0007] a cover plate arranged opposite to the array substrate;

[0008] a plurality of color resist blocks arranged on a side of the cover plate close to the array substrate;

[0009] a black matrix arranged on a side of the cover plate close to the array substrate, the black matrix including a light shielding portion arranged between adjacent color resist blocks;

[0010] wherein a groove is formed on a side of the light shielding portion away from the cover plate, and part of the color resist blocks is arranged on the side of the light shielding portion away from the cover plate and located in the groove.

[0011] In an embodiment of the present application, the light shielding portion includes a first sub-portion arranged on the cover plate and a second sub-portion connected to a side of the first sub-portion away from the cover plate, and the second sub-portion protrudes from a surface of the side of the first sub-portion away from the cover plate to form the groove.

[0012] In an embodiment of the present application, the second sub-portion is disposed at an edge of the first sub-portion.

[0013] In an embodiment of the present application, the second sub-portion is spaced apart from an edge of the first sub-portion.

[0014] In an embodiment of the present application, a normal projection of the second sub-portion on the cover plate is within a normal projection of the first sub-portion on the cover plate.

[0015] In an embodiment of the present application, the display panel further comprises a filling glue disposed between the array substrate and the cover plate, the filling glue covers the plurality of color resist blocks and the black matrix, and a step difference range of a side surface of the filling glue away from the cover plate is less than or equal to 1 micrometer.

[0016] In an embodiment of the present application, a difference between a maximum distance and a minimum distance of the plurality of color resist blocks away from a side surface of the cover plate is less than a thickness of the color resist block.

[0017] In an embodiment of the present application, the plurality of color resist blocks are divided into a plurality of color resist block groups arranged along a first direction, the color resist block group comprises a plurality of color resist blocks arranged along a second direction, and the first direction intersects the second direction.

[0018] The light-shielding portion is located between two adjacent color resist block groups, the groove extends along the second direction, and the color resist blocks in the two adjacent color resist block groups extend to a side of the light-shielding portion away from the cover plate and fill the groove.

[0019] In an embodiment of the present application, the plurality of color resist blocks are arranged in an array along a third direction and a fourth direction, the light-shielding portion is disposed between two color resist blocks adjacent along the third direction and between two color resist blocks adjacent along the fourth direction, and the third direction intersects the fourth direction.

[0020] The groove in the light-shielding portion between two color resist blocks adjacent along the third direction extends along the fourth direction, and the groove in the light-shielding portion between two color resist blocks adjacent along the fourth direction extends along the third direction.

[0021] According to the above purpose of the present application, the embodiments of the present application further provide a display device, which comprises the display panel.

[0022] The display panel and the display device provided by the embodiments of the present application can effectively reduce the thickness of the color resistance block at the position overlapping with the light shielding part, improve the flatness of the film layer, improve the covering condition of the color resistance block and the black matrix by the covering film layer on the color resistance block and the black matrix, further improve the spreading condition of the covering film layer, improve the thickness uniformity of the covering film layer, reduce the influence of the covering film layer on the light emission uniformity of the display panel due to the non-uniform thickness, and improve the light emission uniformity of the display panel.

[0023] Other features and advantages of the present application will be described in detail in the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0025] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0026] Figure 1 A structural schematic diagram of a display panel provided by an embodiment is shown in the figure.

[0027] Figure 2 A structural schematic diagram of a display panel provided by an embodiment is shown in the figure.

[0028] Figure 3 A structural schematic diagram of a light shielding part provided by an embodiment is shown in the figure.

[0029] Figure 4 Another structural schematic diagram of a display panel provided by an embodiment is shown in the figure.

[0030] Figure 5 Another structural schematic diagram of a light shielding part provided by an embodiment is shown in the figure.

[0031] Figure 6 A structural schematic diagram of a black matrix provided by an embodiment is shown in the figure.

[0032] Figure 7 Another structural schematic diagram of a black matrix provided by an embodiment is shown in the figure.

[0033] Figure 8 And Figure 9A manufacturing process structure schematic diagram of the display panel provided in the embodiments of the present application is shown.

[0034] Label explanation:

[0035] 1, array substrate; 2, encapsulation cover plate; 3, black matrix layer; 4, color resistance; 5, filling glue layer;

[0036] 11, array substrate; 12, cover plate;

[0037] 20, color resistance block; 200, color resistance block group; 21, first color resistance block; 22, second color resistance block; 23, third color resistance block;

[0038] 30, black matrix; 31, light shielding part; 310, groove; 311, first subpart; 312, second subpart;

[0039] 40, filling glue. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0041] Please refer to Figure 1 , the OLED display panel includes an array substrate 1, an encapsulation cover plate 2 arranged oppositely, and a filling glue layer 5 between the array substrate 1 and the encapsulation cover plate 2, and a color film layer can be arranged on the encapsulation cover plate 2 to achieve the functions of light filtering and anti-reflection, the color film layer includes a plurality of color resistances 4 and a black matrix layer 3 arranged around the plurality of color resistances 4, and the filling glue layer 5 covers the plurality of color resistances 4 and the black matrix layer 3; wherein, part of the color resistances 4 extend to the black matrix layer 3, and then the height of the color resistances 4 and the black matrix layer 3 at the overlapping position is larger, which causes the spreading and thickness uniformity of the filling glue layer 5 to be poor, and then affects the light emitting uniformity of the display panel, for example, the display unevenness problem caused by the difference in brightness and chroma at different viewing angles.

[0042] Please refer to Figure 2 and Figure 3The display panel provided by the embodiment of the present application comprises an array substrate 11, a cover plate 12, a plurality of color resistance blocks 20 and a black matrix 30. The cover plate 12 is arranged opposite to the array substrate 11; the plurality of color resistance blocks 20 are arranged on the side of the cover plate 12 close to the array substrate 11; the black matrix 30 is arranged on the side of the cover plate 12 close to the array substrate 11, and the black matrix 30 comprises a light shielding part 31 arranged between adjacent color resistance blocks 20.

[0043] The light shielding part 31 is provided with a groove 310 on the side away from the cover plate 12, and part of the color resistance block 20 is arranged on the side of the light shielding part 31 away from the cover plate 12 and located in the groove 310.

[0044] In the implementation process, the groove 310 is arranged in the light shielding part 31 of the black matrix 30, and part of the color resistance block 20 is arranged in the groove 310 at the position overlapping with the light shielding part 31, so as to effectively reduce the thickness of the color resistance block 20 at the position overlapping with the light shielding part 31, improve the flatness of the film layer, improve the coverage of the color resistance block 20 and the black matrix 30 by the cover film layer on the color resistance block 20 and the black matrix 30, and then improve the spreading of the cover film layer, improve the thickness uniformity of the cover film layer, reduce the influence of the cover film layer on the light emission uniformity of the display panel due to the non-uniform thickness, and improve the light emission uniformity of the display panel.

[0045] Specifically, in some embodiments, the array substrate 11 can comprise a substrate and a thin film transistor layer arranged on the substrate, and the thin film transistor layer is located on the side of the substrate close to the cover plate 12. The substrate can be a hard substrate, such as a glass substrate; or the substrate can be a flexible substrate, such as a substrate formed by polyimide. When the substrate is a flexible substrate, the substrate can be formed by a plurality of sub-substrates made of the same material, such as polyimide, and the adjacent sub-substrates are bonded by a bonding sub-layer.

[0046] In some embodiments, the thin film transistor layer includes a thin film transistor including a semiconductor on a substrate, which can be formed of polysilicon or metal oxide (e.g., indium gallium zinc oxide). The semiconductor is divided into a channel region and a source region and a drain region formed on both sides of the channel region. The thin film transistor layer further includes a first gate insulating layer covering the semiconductor. The thin film transistor further includes a first gate formed on the first gate insulating layer, which overlaps the channel region. The first gate can be formed of multiple layers or a single layer including a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material having high corrosion resistance. The thin film transistor layer further includes a second gate insulating layer covering the first gate. The thin film transistor further includes a second gate on the second gate insulating layer, which overlaps the first gate, and can be formed of multiple layers or a single layer including a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material having high corrosion resistance. The thin film transistor layer further includes a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer and the first gate insulating layer and the second gate insulating layer include a source contact hole and a drain contact hole, through which the source region and the drain region are respectively exposed.

[0047] The thin film transistor further includes a source and a drain formed in the same layer on the first interlayer insulating layer, the source being connected to the source region through the source contact hole, and the drain being connected to the drain region through the drain contact hole. The source and the drain can be formed of multiple layers or a single layer including a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material having high corrosion resistance. For example, the source and the drain can be a triple layer of Ti / Cu / Ti, Ti / Ag / Ti, Ti / Al / Ti, or Mo / Al / Mo, or other single layer or multiple layer structures.

[0048] In some embodiments, the array substrate 11 can further include a planar layer between the thin film transistor layer and the light-emitting layer, the planar layer covering the source and the drain.

[0049] In some embodiments, the display panel further includes an anode layer on a side of the planar layer away from the thin film transistor layer, the anode layer including a plurality of anodes, each anode being arranged in one-to-one correspondence with a pixel unit. Each anode is electrically connected to the thin film transistor. The planar layer includes an anode contact hole through which the anode is in contact with the source or the drain of the thin film transistor.

[0050] In some embodiments, the display panel further comprises a pixel definition layer disposed on the array substrate 11, the pixel definition layer is disposed on the side of the planarization layer away from the thin film transistor layer, and the pixel definition layer comprises pixel definition portions and openings between the pixel definition portions. The display panel further comprises a light-emitting layer, and the light-emitting layer comprises a plurality of pixel units. The pixel units are located in the openings. The openings expose part of the anode and cover the edges of the anode. The pixel units can comprise red pixel units, green pixel units and blue pixel units.

[0051] In some embodiments, the light-emitting layer can be an organic light-emitting layer or a quantum dot light-emitting layer, which is not limited herein.

[0052] In some embodiments, the display panel further comprises a cathode layer covering the light-emitting layer. In the direction from the anode to the cathode layer, the light-emitting layer comprises a hole-conducting organic layer, a light-emitting material layer and an electron-conducting organic layer which are sequentially stacked. The hole-conducting organic layer can comprise a hole injection layer and a hole transport layer, the hole injection layer is in direct contact with the anode, and the hole transport layer is located between the hole injection layer and the light-emitting material layer. The hole-conducting organic layer can further comprise an electron blocking layer located between the hole transport layer and the light-emitting material layer. The electron-conducting organic layer can comprise an electron injection layer and an electron transport layer, the electron injection layer is in direct contact with the cathode layer, and the electron transport layer is located between the electron injection layer and the light-emitting material layer. The electron-conducting organic layer can further comprise a hole blocking layer located between the electron transport layer and the light-emitting layer.

[0053] In some embodiments, the display panel can further comprise an encapsulation layer located on the side of the cathode layer away from the light-emitting layer.

[0054] In some embodiments, the display panel further comprises a filling adhesive 40 disposed between the cover plate 12 and the array substrate 11, and the filling adhesive 40 covers a plurality of the color resistance blocks 20 and the black matrix 30.

[0055] In some embodiments, the cover plate 12 and the filling adhesive 40 are disposed on the side of the encapsulation layer away from the array substrate 11, i.e. the cover plate 12 and the filling adhesive 40 are disposed on the side of the light-emitting layer away from the array substrate 11, and the filling adhesive 40 is located between the array substrate 11 and the cover plate 12. It can be understood that the cover plate 12 and the filling adhesive 40 are located on the light-emitting side of the display panel, and therefore the thickness uniformity of the filling adhesive 40 will have a greater impact on the light-emitting uniformity of the display panel.

[0056] It should be noted that the side of the cover plate 12 close to the array substrate 11 is provided with a plurality of color resistance blocks 20 and a black matrix 30. In some embodiments, a plurality of the color resistance blocks 20 and the black matrix 30 are disposed on the surface of the side of the cover plate 12 close to the array substrate 11.

[0057] In some embodiments, the plurality of color resist blocks 20 can include a first color resist block 21, a second color resist block 22, and a third color resist block 23. For example, the first color resist block 21 can be a red color resist block and is arranged in alignment with the red pixel unit, the second color resist block 22 can be a green color resist block and is arranged in alignment with the green pixel unit, and the third color resist block 23 can be a blue color resist block and is arranged in alignment with the blue pixel unit.

[0058] Further, the black matrix 30 includes a light shielding portion 31 arranged between adjacent color resist blocks 20. The color resist blocks 20 are arranged on the cover plate 12 and extend partially to a side of the color resist block 20 adjacent thereto away from the cover plate 12. Both of the color resist blocks 20 located on opposite sides of the light shielding portion 31 can extend to the light shielding portion 31 and can be connected or overlapped on the side of the light shielding portion 31 away from the cover plate 12. The filling glue 40 covers the plurality of color resist blocks 20 and the black matrix 30. Therefore, the film layer flatness of the plurality of color resist blocks 20 and the black matrix 30 has a greater influence on the spreading of the filling glue 40.

[0059] In the embodiments of the present application, the side of the light shielding portion 31 away from the cover plate 12 is provided with a groove 310. In the process, the color resist block material can extend into the groove 310, so that the color resist block 20 located on the side of the light shielding portion 31 away from the cover plate 12 is at least partially located in the groove 310. Therefore, the thickness of the overlapping position of the color resist block 20 and the light shielding portion 31 can be effectively reduced, the film layer flatness is improved, the coverage of the filling glue 40 on the color resist block 20 and the black matrix 30 is improved, the spreading of the filling glue 40 is improved, the thickness uniformity of the filling glue 40 is improved, the influence of the filling glue 40 on the light emission uniformity of the display panel due to the non-uniform thickness is reduced, and the light emission uniformity of the display panel is improved.

[0060] In some embodiments, the light shielding portion 31 includes a first sub-portion 311 arranged on the cover plate 12 and a second sub-portion 312 connected to the side of the first sub-portion 311 away from the cover plate 12. The second sub-portion 312 protrudes from the surface of the side of the first sub-portion 311 away from the cover plate 12 to form the groove 310.

[0061] In some embodiments, the filling glue 40 covers the side of the first sub-portion 311 and the second sub-portion 312 away from the cover plate 12. When the thickness of the color resist block 20 located in the groove 310 is less than the depth of the groove 310, the filling glue 40 can also be filled in the groove 310.

[0062] In some embodiments, the thickness of the shading portion 31 is greater than or equal to 2 microns and less than or equal to 3 microns. For example, the thickness of the first sub-portion 311 can be 2 microns, and the thickness of the second sub-portion 312 can be 1 micron. Thus, the maximum thickness of the shading portion 31 is 3 microns and the minimum thickness is 2 microns.

[0063] In some embodiments, the width of the shading portion 31 can be greater than or equal to 5 microns and less than or equal to 10 microns; the width of the second sub-portion 312 can be greater than or equal to 1 micron and less than or equal to 3 microns; wherein, the width of the second sub-portion 312 cannot be too large, otherwise the area and volume of the groove 310 will be too small to effectively accommodate the color resist material.

[0064] In some embodiments, the distance between the cover plate 12 and the array substrate 11 is greater than or equal to 5 micrometers and less than or equal to 10 micrometers.

[0065] In some embodiments, the step difference range of the surface of the side of the filling glue 40 away from the cover plate 12 is less than or equal to 1 micron; that is, by setting the groove 310, the embodiment of the present application can effectively improve the flatness of the film layer of the multiple color blocks 20 and the black matrix 30, thereby improving the coverage of the filling glue 40, improving the thickness uniformity of the filling glue 40, reducing the step difference of the filling glue 40 on the side away from the cover plate 12, and reducing the impact of the uneven thickness of the filling glue 40 on the light uniformity of the display panel.

[0066] In some embodiments, a surface of the filling glue 40 away from the cover plate 12 is flat.

[0067] In some embodiments, the difference between the maximum distance and the minimum distance between the surface of one side of the plurality of color blocks 20 away from the cover plate 12 and the cover plate 12 is less than the thickness of the color block 20; Figure 1 For the display panel shown, the color resist block 20 located on the side of the light shielding portion 31 away from the cover plate 12 is at least partially located in the groove 310. Therefore, the top of the color resist block 20 located on the side of the light shielding portion 31 away from the cover plate 12 is sunken a distance to reduce the step difference between the color resist block 20 located on the side of the light shielding portion 31 away from the cover plate 12 and the other color resist blocks 20.

[0068] Please continue to refer to Figure 2 as well as Figure 3 In one embodiment of the present application, the second sub-portion 312 is arranged at the edge of the first sub-portion 311.

[0069] The second sub-part 312 is flush with the side surface of the first sub-part 311, thereby effectively increasing the area and volume of the groove 310, and accommodating more color resist material, so as to further reduce the thickness of the color resist block 20 located on the side of the light-shielding part 31 away from the cover plate 12.

[0070] In some embodiments, the orthographic projection of the second sub-part 312 on the cover plate 12 is located within the orthographic projection of the first sub-part 311 on the cover plate 12; so as to avoid the side surface of the second sub-part 312 exceeding the side surface of the first sub-part 311, and to avoid the side surface of the light-shielding part 31 forming an undercut structure to affect the film layer morphology and thickness uniformity of the color resist block 20.

[0071] Please refer to Figure 4 and Figure 5 In another embodiment of the present application, the second sub-part 312 is spaced apart from the edge of the first sub-part 311, i.e., a step structure is formed at the edge of the light-shielding part 31, so that the thickness of the light-shielding part 31 at the edge gradually increases, which can avoid the color resist block 20 from breaking or failing to cover due to excessive climbing height at the edge of the light-shielding part 31.

[0072] Please refer to Figure 2 , Figure 3 and Figure 6 In an embodiment of the present application, a plurality of color resist blocks 20 are divided into a plurality of color resist block groups 200 arranged along a first direction X, the color resist block group 200 includes a plurality of color resist blocks 20 arranged along a second direction Y, and the first direction X and the second direction Y intersect.

[0073] In some embodiments, the first direction X and the second direction Y are perpendicular.

[0074] The light-shielding part 31 is located between two adjacent color resist block groups 200 and extends along the second direction Y, the groove 310 extends along the second direction Y, and the color resist blocks 20 in the two adjacent color resist block groups 200 extend to the side of the light-shielding part 31 away from the cover plate 12 and fill the groove 310.

[0075] Please refer to Figure 2 , Figure 3 and Figure 7 In another embodiment of the present application, a plurality of color resist blocks 20 are arranged in an array along a third direction M and a fourth direction N, the light-shielding part 31 is arranged between two color resist blocks 20 adjacent along the third direction M and arranged between two color resist blocks 20 adjacent along the fourth direction N, and the third direction M and the fourth direction N intersect.

[0076] In some embodiments, the third direction M and the fourth direction N are perpendicular.

[0077] The black matrix 30 is arranged around the color resist blocks 20, and part of the color resist blocks 20 extend to the side of the black matrix 30 away from the cover plate 12; further, the groove 310 in the light-shielding part 31 between two color resist blocks 20 adjacent in the third direction M extends in the fourth direction N, and the groove 310 in the light-shielding part 31 between two color resist blocks 20 adjacent in the fourth direction N extends in the third direction M.

[0078] In some embodiments, the groove 310 extending in the third direction M and the groove 310 extending in the fourth direction N are connected to increase the volume of the groove 310 to accommodate more color resist material, further reducing the thickness of the color resist block 20 on the side of the light-shielding part 31 away from the cover plate 12.

[0079] In addition, in the process of the display panel, the black matrix 30 on the cover plate 12, i.e., the light-shielding part 31, can be formed first, specifically, the first sub-part 311 is formed first on the cover plate 12, as shown in Figure 8 .

[0080] Then, the second sub-part 312 protruding from the surface of the first sub-part 311 is formed on the first sub-part 311 to form the groove 310 on the side of the light-shielding part 31 away from the cover plate 12, as shown in Figure 9 .

[0081] Next, the first color resist block 21, the second color resist block 22, and the third color resist block 23 are sequentially completed on the cover plate 12 by using a yellow light process to form a plurality of color resist blocks 20, and at least part of the color resist blocks 20 are located in the groove 310.

[0082] Further, the filling glue material is formed on the cover plate 12 and the UV frame glue material is coated on the edge of the cover plate 12, and the filling glue material covers a plurality of color resist blocks 20 and the black matrix 30.

[0083] Then, the cover plate 12 is assembled with the array substrate 11 to obtain the display panel.

[0084] It should be noted that the first sub-part 311 and the second sub-part 312 can be prepared by two-step patterning, or after the black matrix material is deposited, the light-shielding part 31 with different thicknesses is obtained by a semi-transparent mask to form the first sub-part 311 and the second sub-part 312.

[0085] In some embodiments, the display panel comprises a display area and a non-display area adjacent to the display area, and the black matrix 30 in the display area can be arranged according to the structure described in the above embodiments, and the black matrix 30 in the non-display area can be arranged as a whole to shield and reduce reflection.

[0086] As described above, by opening the groove 310 in the light-shielding part 31 of the black matrix 30, the color resistance block 20 can be at least partially located in the groove 310 at the position overlapping with the light-shielding part 31, so as to effectively reduce the thickness of the color resistance block 20 at the position overlapping with the light-shielding part 31, improve the flatness of the film layer, improve the coverage of the filling glue 40 on the color resistance block 20 and the black matrix 30, and then improve the spreading of the filling glue 40, improve the thickness uniformity of the filling glue 40, reduce the influence of the filling glue 40 on the light-emitting uniformity of the display panel due to the non-uniform thickness, and improve the light-emitting uniformity of the display panel.

[0087] In addition, the present application also provides a display device comprising the display panel described in the above embodiments.

[0088] It can be understood that, since the display device has the same display panel as described in the above embodiments, the display device has the same beneficial effects as the display panel described in the above embodiments, which will not be described here.

[0089] In the description of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0090] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0091] The embodiments, implementation manners and related technical features of the present application can be combined, replaced with each other without conflict.

[0092] The above is only the preferred embodiments of the present application, and does not limit the present application in any form, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments, without departing from the technical solution of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: include: an array substrate; a cover plate, arranged opposite to the array substrate; A plurality of color resist blocks are arranged on a side of the cover plate close to the array substrate; A black matrix is ​​provided on a side of the cover plate close to the array substrate, the black matrix including a light shielding portion provided between adjacent color resist blocks; A filling glue is provided between the array substrate and the cover plate, and the filling glue covers the plurality of color resist blocks and the black matrix; A groove is provided on the side of the light shielding portion away from the cover plate, part of the color resist block is arranged on the side of the light shielding portion away from the cover plate and is located in the groove, and the step difference range of the surface of the side of the filling glue away from the cover plate is less than or equal to 1 micron.

2. The display panel according to claim 1, wherein: The light shielding portion includes a first sub-portion provided on the cover plate and a second sub-portion connected to the first sub-portion away from the cover plate, and the second sub-portion protrudes from the surface of the first sub-portion away from the cover plate to form the groove.

3. The display panel according to claim 2, wherein: The second sub-portion is arranged at an edge of the first sub-portion.

4. The display panel according to claim 2, wherein: The second sub-portion is spaced apart from an edge of the first sub-portion.

5. The display panel according to claim 2, wherein: An orthographic projection of the second sub-portion on the cover plate is located within an orthographic projection of the first sub-portion on the cover plate.

6. The display panel according to claim 1, wherein: The difference between the maximum distance and the minimum distance between the surface of one side of the plurality of color resist blocks away from the cover plate and the cover plate is smaller than the thickness of the color resist blocks.

7. The display panel according to any one of claims 1 to 6, characterized in that: The plurality of color resist blocks are divided into a plurality of color resist block groups arranged along a first direction, the color resist block groups including a plurality of color resist blocks arranged along a second direction, the first direction intersecting the second direction; The light shielding portion is located between two adjacent color block groups. The groove extends along the second direction. The color block blocks in the two adjacent color block groups extend to a side of the light shielding portion away from the cover plate and fill the groove.

8. The display panel according to any one of claims 1 to 6, characterized in that: The plurality of color resist blocks are arranged in an array along a third direction and a fourth direction, the light shielding portion is provided between two adjacent color resist blocks along the third direction and between two adjacent color resist blocks along the fourth direction, and the third direction intersects the fourth direction; The groove in the light shielding portion between two adjacent color resist blocks along the third direction extends along the fourth direction, and the groove in the light shielding portion between two adjacent color resist blocks along the fourth direction extends along the third direction.

9. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 8.

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