Display panel and display apparatus

Abstract

The present application relates to a display panel and a display apparatus. A bank is located between adjacent light-emitting portions. A color filter layer comprises a plurality of color resist blocks and a black matrix located between adjacent color resist blocks, wherein the plurality of color resist blocks are arranged corresponding to the plurality of light-emitting portions, and the width of the black matrix is less than or equal to the width of each bank.

Description

Display panel and display device Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Organic light-emitting diode (OLED) display panels are widely used in various fields due to their lightweight, wide viewing angle, low power consumption, fast response speed, low temperature resistance, high luminous efficiency, and the ability to fabricate flexible displays.

[0003] In OLED display panels, a polarizer-less panel (PLP) technology is often used to replace the function of a polarizer. Specifically, a black matrix layer (BM) and a color filter layer (CF) are used to replace the effect of a polarizer (Pol). The color filter layer includes color blocks that are arranged corresponding to the pixel apertures, and the black matrix layer is located between the color blocks. The black matrix layer blocks the light emitted by the light-emitting device, thereby reducing the light emission of the display panel at a wide viewing angle. Invention Overview

[0004] This application provides a display panel and display device that can reduce the impact of the black matrix on the light emission angle of the display panel and improve the viewing angle of the display panel.

[0005] This application provides a display panel, which includes:

[0006] Array substrate;

[0007] A light-emitting functional layer is disposed on the array substrate, and the light-emitting functional layer includes a plurality of light-emitting parts;

[0008] A barrier is disposed on the array substrate and located between adjacent light-emitting parts;

[0009] A color filter layer is disposed on the side of the light-emitting functional layer away from the array substrate. The color filter layer includes a plurality of color resist blocks and a black matrix located between adjacent color resist blocks. The plurality of color resist blocks are disposed corresponding to a plurality of light-emitting parts. The plurality of color resist blocks include a first color resist block, a second color resist block, and a third color resist block. The black matrix includes a first sub-part located between the first color resist block and the second color resist block, a second sub-part located between the first color resist block and the third color resist block, and a third sub-part located between the second color resist block and the third color resist block.

[0010] Wherein, the width of the first sub-part is greater than or equal to the width of the second sub-part, the width of the second sub-part is greater than or equal to the width of the third sub-part, and the width of the black matrix is ​​less than or equal to the width of the retaining wall.

[0011] In accordance with the above-mentioned objectives of this application, embodiments of this application also provide a display device, the display device including a display panel, the display panel comprising:

[0012] Array substrate;

[0013] A light-emitting functional layer is disposed on the array substrate, and the light-emitting functional layer includes a plurality of light-emitting parts;

[0014] A barrier is disposed on the array substrate and located between adjacent light-emitting parts;

[0015] A color filter layer is disposed on the side of the light-emitting functional layer away from the array substrate. The color filter layer includes a plurality of color resist blocks and a black matrix located between adjacent color resist blocks. The plurality of color resist blocks are disposed corresponding to a plurality of light-emitting parts. The plurality of color resist blocks include a first color resist block, a second color resist block, and a third color resist block. The black matrix includes a first sub-part located between the first color resist block and the second color resist block, a second sub-part located between the first color resist block and the third color resist block, and a third sub-part located between the second color resist block and the third color resist block.

[0016] Wherein, the width of the first sub-part is greater than or equal to the width of the second sub-part, the width of the second sub-part is greater than or equal to the width of the third sub-part, and the width of the black matrix is ​​less than or equal to the width of the retaining wall. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 is a schematic diagram of a first structure of a display panel provided in an embodiment of this application;

[0020] Figure 2 is a schematic diagram of a second structure of the display panel provided in an embodiment of this application;

[0021] Figure 3 is a schematic diagram of a third structure of the display panel provided in an embodiment of this application;

[0022] Figure 4 is a schematic diagram of a fourth structure of the display panel provided in an embodiment of this application;

[0023] Figure 5 is a schematic diagram of the verification structure in the display panel provided in the embodiments of this application, corresponding to different comparative examples and embodiments;

[0024] Figure 6 is a first set of perspective verification curves provided in the embodiments of this application;

[0025] Figure 7 is a second set of perspective verification curves provided in the embodiments of this application;

[0026] Figure 8 is a third set of perspective verification curves provided in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 11. Array substrate; 111. Substrate; 112. Thin film transistor layer; 12. Opposite substrate;

[0029] 21. Light-emitting functional layer; 211. Light-emitting part; 22. Retaining wall;

[0030] 30. Color filter layer; 31. Color block; 311. Red color block; 312. Green color block; 313. Blue color block; 32. Black matrix; 321. First sub-section; 322. Second sub-section; 323. Third sub-section;

[0031] 40. Encapsulation layer; 41. Organic encapsulation layer;

[0032] 51. Touch electrode layer; 52. First insulating layer; 53. Second insulating layer. Embodiments of the present invention

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0034] Please refer to Figure 1. An embodiment of this application provides a display panel, which includes an array substrate 11, a light-emitting functional layer 21, a barrier 22, and a color filter layer 30.

[0035] The light-emitting functional layer 21 is disposed on the array substrate 11, and the light-emitting functional layer 21 includes a plurality of light-emitting parts 211; the barrier 22 is disposed on the array substrate 11 and located between adjacent light-emitting parts 211; the color filter layer 30 is disposed on the side of the light-emitting functional layer 21 away from the array substrate 11, and the color filter layer 30 includes a plurality of color resist blocks 31 and a black matrix 32 located between adjacent color resist blocks 31. The plurality of color resist blocks 31 are correspondingly disposed with the plurality of light-emitting parts 211. The plurality of color resist blocks 31 include a first color resist block 311, a second color resist block 312 and a third color resist block 313. The black matrix 32 includes a first sub-part 321 located between the first color resist block 311 and the second color resist block 312, a second sub-part 322 located between the first color resist block 311 and the third color resist block 313, and a third sub-part 323 located between the second color resist block 312 and the third color resist block 313.

[0036] Furthermore, the width of the first sub-part 321 is greater than or equal to the width of the second sub-part 322, the width of the second sub-part 322 is greater than or equal to the width of the third sub-part 323, and the width of the black matrix 32 is less than or equal to the width of the retaining wall 22.

[0037] In the implementation process, this embodiment of the application reduces the width of the black matrix 32 and makes the width of the black matrix 32 smaller than the width of the barrier 22, thereby effectively reducing the impact of the black matrix 32 on the light emission viewing angle of the display panel and improving the viewing angle of the display panel; and the width of the black matrix 32 located between different color resist blocks can be set differently, thereby giving different degrees of light blocking to the light-emitting part 211 corresponding to different color resist blocks, so as to improve the uneven display phenomenon caused by the different light emission colors and different light emission viewing angle attenuation of the light-emitting part 211.

[0038] In one embodiment of this application, the orthographic projection of the black matrix on the array substrate is located within the coverage area of ​​the orthographic projection of the barrier wall on the array substrate.

[0039] In one embodiment of this application, the edge of the orthographic projection of the black matrix on the array substrate is spaced apart from the edge of the orthographic projection of the barrier wall on the array substrate.

[0040] In one embodiment of this application, the first color resist is a green color resist, the second color resist is a blue color resist, and the third color resist is a red color resist. The width of the first sub-part is greater than the width of the second sub-part, and the width of the second sub-part is greater than the width of the third sub-part.

[0041] In one embodiment of this application, the display panel further includes a counter substrate disposed on the side of the light-emitting functional layer away from the array substrate, the color filter layer disposed on the surface of the counter substrate close to the array substrate, and the black matrix is ​​in contact with the counter substrate, and the color resist block is in contact with the counter substrate.

[0042] In one embodiment of this application, the display panel further includes an encapsulation layer disposed between the light-emitting functional layer and the color filter layer. Under a preset viewing angle, the formula for calculating the light-blocking width of the black matrix relative to the adjacent light-emitting portion is:

[0043] w = h1TanA + h2TanB - (w1 - w2) / 2;

[0044] A = arcsin[(n3sinC) / n1];

[0045] B = arcsin[(n³sinC) / n²];

[0046] Wherein, w is the light-shielding width, h1 is the distance between the light-emitting part and the color resist block, h2 is the thickness of the color resist block, w1 is the width of the barrier, w2 is the width of the black matrix, n1 is the refractive index of the encapsulation layer, n2 is the refractive index of the color resist block, n3 is the refractive index of air, A is the incident angle of the first ray seen at the point where the encapsulation layer enters the color resist block under the preset viewing angle, B is the incident angle of the first ray at the point where the color resist block enters the opposing substrate, and C is the preset viewing angle.

[0047] In one embodiment of this application, the encapsulation layer includes an organic encapsulation layer, the distance between the light-emitting portion and the opposing substrate along the thickness direction of the display panel has a first value, the thickness of the organic encapsulation layer in the display area of ​​the display panel has a second value, the first value decreases as the second value decreases, and the decrease in the first value is equal to the decrease in the second value.

[0048] In one embodiment of this application, the distance between the light-emitting part and the opposing substrate along the thickness direction of the display panel is less than or equal to 10 micrometers.

[0049] In one embodiment of this application, the display panel further includes a touch electrode layer disposed between the light-emitting functional layer and the color filter layer, wherein the orthographic projection of the touch electrode layer on the array substrate is located within the coverage area of ​​the orthographic projection of the black matrix on the array substrate.

[0050] Specifically, referring to Figures 1 and 2, in some embodiments, the display panel includes an array substrate 11 and a counter substrate 12 disposed opposite to each other, a light-emitting functional layer 21, a barrier 22, the counter substrate 12, and a color filter layer 30; wherein, the light-emitting functional layer 21 and the barrier 22 are disposed on the array substrate 11, and the color filter layer 30 is disposed on the counter substrate 12; specifically, the light-emitting functional layer 21 and the barrier 22 are disposed on the side of the array substrate 11 close to the counter substrate 12, the counter substrate 12 is disposed on the side of the light-emitting functional layer 21 away from the array substrate 11, and the color filter layer 30 is disposed on the side of the counter substrate 12 close to the array substrate 11 or away from the array substrate 11.

[0051] It is understood that the light-emitting functional layer 21 and the barrier 22 are fabricated on the array substrate 11 during the manufacturing process, and the color filter layer 30 is fabricated on the opposing substrate 12 during the manufacturing process. Then, the array substrate 11 and the opposing substrate 12 are assembled. This avoids damage to the light-emitting functional layer 21 by the color filter layer 30 during the exposure and development process. It also eliminates the need to increase the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 to reduce the damage to the light-emitting functional layer 21 caused by the manufacturing process of the color filter layer 30. Therefore, the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 can be reduced, thereby reducing the spacing between the color filter layer 30 and the light-emitting functional layer 21. This reduces the obstruction of the black matrix 32 to the light-emitting part 211 at a wide viewing angle, thus improving the viewing angle of the display panel.

[0052] In some embodiments, the array substrate 11 includes a substrate 111 and a thin-film transistor layer 112 disposed on the substrate 111, and the light-emitting functional layer 21 is disposed on the side of the thin-film transistor layer 112 away from the substrate 111.

[0053] In some embodiments, the substrate 111 may be a rigid substrate, such as a glass substrate; or, the substrate 111 may be a flexible substrate, such as a substrate formed of polyimide. When the substrate is a flexible substrate, the substrate 111 may be formed of multiple sub-substrates of the same material, such as polyimide, and adjacent sub-substrates may be bonded together by adhesive sub-layers.

[0054] In some embodiments, the thin-film transistor layer 112 includes a thin-film transistor comprising a semiconductor located on the substrate, the semiconductor being formed of polycrystalline silicon or a metal oxide (such as indium gallium zinc oxide). The semiconductor is divided into a channel region and source and drain regions formed on either side of the channel region. The thin-film transistor layer 112 further includes a first gate insulating layer covering the semiconductor. The thin-film transistor also includes a first gate formed on the first gate insulating layer, the first gate overlapping the channel region. The first gate may be formed as multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance. The thin-film transistor layer 112 further includes a second gate insulating layer covering the first gate. The thin-film transistor also includes a second gate located on the second gate insulating layer, the second gate overlapping the first gate, the second gate being formed as multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance. The thin-film transistor layer 112 further includes a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer, the first gate insulating layer, and the second gate insulating layer each include a source contact hole and a drain contact hole, and the source region and the drain region are exposed through the source contact hole and the drain contact hole, respectively.

[0055] The thin-film transistor further includes a source and a drain disposed on the same layer. Both the source and the drain are formed on the first interlayer insulating layer. The source is connected to the source region through a source contact hole, and the drain is connected to the drain region through a drain contact hole. The source and the drain can be multiple layers or a single layer formed of low-resistance materials such as Al, Ti, Mo, Cu, Ni, or their alloys, or materials with 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 multi-layer structures.

[0056] In some embodiments, the thin-film transistor layer 112 further includes a planarization layer located on the side of the first interlayer insulating layer away from the substrate 111, the planarization layer covering the source and the drain.

[0057] In some embodiments, the display panel further includes a plurality of anodes (not shown) disposed on the planarization layer, and the anodes are connected to the source or the drain.

[0058] In some embodiments, the display panel further includes a pixel definition layer disposed on the planarization layer, and the pixel definition layer has a plurality of pixel openings and a barrier 22 surrounding each of the pixel openings. The plurality of pixel openings can be configured one-to-one with a plurality of anodes, and each pixel opening exposes the upper surface of the corresponding anode.

[0059] Furthermore, the light-emitting functional layer 21 includes a plurality of light-emitting parts 211, which are disposed corresponding to a plurality of pixel openings. Each light-emitting part 211 is disposed in the corresponding pixel opening and is located on the corresponding anode.

[0060] In some embodiments, the plurality of light-emitting portions 211 are configured in a one-to-one correspondence with the plurality of pixel openings.

[0061] In some embodiments, the display panel further includes a cathode layer (not shown) disposed on the side of the light-emitting functional layer 21 away from the array substrate 11, the cathode layer covering the plurality of light-emitting portions 211 and the barrier 22.

[0062] In some embodiments, the opposing substrate 12 is disposed on the side of the light-emitting functional layer 21 away from the array substrate 11, the color filter layer 30 is disposed on the opposing substrate 12, and the color filter layer 30 is located on the surface of the opposing substrate 12 close to the array substrate 11; the color filter layer 30 includes a plurality of color resist blocks 31 and a black matrix 32 located between adjacent color resist blocks 31, and the black matrix 32 is in contact with the opposing substrate 12, and the color resist blocks 31 are in contact with the opposing substrate 12.

[0063] In other embodiments of this application, the color filter layer 30 may also be disposed on the surface of the opposing substrate 12 away from the array substrate 11. In this embodiment of the application, the color filter layer 30 is disposed on the opposing substrate 12 and the color filter layer 30 is located on the surface of the opposing substrate 12 close to the array substrate 11 as an example.

[0064] In some embodiments, the orthographic projection of the black matrix 32 on the array substrate 11 is located within the coverage area of ​​the orthographic projection of the barrier wall 22 on the array substrate 11. Therefore, by reducing the width of the black matrix 32 and making the width of the black matrix 32 smaller than the width of the barrier wall 22, the influence of the black matrix 32 on the light emission angle of the display panel can be effectively reduced, thereby improving the viewing angle of the display panel.

[0065] In some embodiments, the edge of the orthographic projection of the black matrix 32 on the array substrate 11 is spaced apart from the edge of the orthographic projection of the barrier wall 22 on the array substrate 11, that is, the width of the black matrix 32 is smaller than the width of the barrier wall 22, thereby reducing the probability that the light emission at the edge of each light-emitting part 211 is blocked by the black matrix 32, and further improving the light emission angle range of the light-emitting part 211.

[0066] In some embodiments, the width of the black matrix 32 is greater than or equal to 4.5 micrometers and less than 20 micrometers. Further, the width of the black matrix 32 is greater than or equal to 6 micrometers and less than or equal to 12 micrometers. For example, the width of the black matrix 32 can be 6 micrometers, 7 micrometers, 8 micrometers, 9 micrometers, 10 micrometers, 11 micrometers or 12 micrometers.

[0067] In some embodiments, the display panel further includes a touch electrode layer 51, a first insulating layer 52, and a second insulating layer 53 disposed between the light-emitting functional layer 21 and the color filter layer 30. The first insulating layer 52 is located between the touch electrode layer 51 and the light-emitting functional layer 21, and the second insulating layer 53 is located between the touch electrode layer 51 and the color filter layer 30. In order to block the reflected light of the touch electrode layer 51, the orthographic projection of the touch electrode layer 51 on the array substrate 11 is located within the coverage area of ​​the orthographic projection of the black matrix 32 on the array substrate 11. That is, the width of the black matrix 32 in this embodiment is reduced, and consequently the width of the electrodes in the touch electrode layer 51 also needs to be reduced to be within the coverage area of ​​the black matrix 32.

[0068] In other embodiments of this application, the material of the touch electrode layer 51 may include a transparent conductive material, and the orthographic projection of the touch electrode layer 51 on the array substrate 11 may not be located within the coverage area of ​​the orthographic projection of the black matrix 32 on the array substrate 11, which may also affect the light emission and display effect.

[0069] In one embodiment of this application, referring to FIG1, the plurality of color resist blocks 31 include a first color resist block 311, a second color resist block 312 and a third color resist block 313, and the black matrix 32 includes a first sub-part 321 located between the first color resist block 311 and the second color resist block 312, a second sub-part 322 located between the first color resist block 311 and the third color resist block 313, and a third sub-part 323 located between the second color resist block 312 and the third color resist block 313.

[0070] In some embodiments, the first color resist block 311 is a green color resist block, the second color resist block 312 is a blue color resist block, and the third color resist block 313 is a red color resist block.

[0071] Wherein, the width of the first sub-part 321 is equal to the width of the second sub-part 322, and the width of the first sub-part 321 is equal to the width of the third sub-part 323; that is, the width of the black matrix 32 is the same everywhere, which can simplify the process and reduce the difficulty of the process.

[0072] In another embodiment of this application, referring to FIG3, the plurality of color resist blocks 31 include a first color resist block 311, a second color resist block 312 and a third color resist block 313, and the black matrix 32 includes a first sub-part 321 located between the first color resist block 311 and the second color resist block 312, a second sub-part 322 located between the first color resist block 311 and the third color resist block 313, and a third sub-part 323 located between the second color resist block 312 and the third color resist block 313.

[0073] In some embodiments, the first color resist block 311 is a green color resist block, the second color resist block 312 is a blue color resist block, and the third color resist block 313 is a red color resist block; wherein, the width of the first sub-part 321 is greater than the width of the second sub-part 322, and the width of the second sub-part 322 is greater than the width of the third sub-part 323; as verified by this application, the light emission viewing angle attenuation is most severe between the red color resist block and the blue color resist block, followed by the light emission viewing angle attenuation between the red color resist block and the green color resist block, and the light emission viewing angle attenuation is least severe between the green color resist block and the blue color resist block. Therefore, in this embodiment, based on the different degrees of light emission viewing angle attenuation between the color resist blocks of different colors, the black color resist block located between the color resist blocks of different colors is... The width of the color matrix 32 is differentiated to minimize the obstruction of the light emission angle between the second color block 312 and the third color block 313 by the black matrix 32, to maximize the obstruction of the light emission angle between the first color block 311 and the third color block 313 by the black matrix 32, and to make the light emission angle between the first color block 311 and the second color block 312 as large as possible. This makes the light emission angle between the color blocks 31 of different colors tend to be uniform, improving the display uniformity of the display panel and the display effect of the display panel.

[0074] In some embodiments, the display panel includes a red pixel column, a green pixel column, and a blue pixel column arranged alternately along a first direction, and the red pixel column includes a plurality of third color blocks 313 arranged along a second direction, the green pixel column includes a plurality of first color blocks 311 arranged along the second direction, and the blue pixel column includes a plurality of second color blocks 312 arranged along the second direction; therefore, the first sub-part 321 may be located between the green pixel column and the blue pixel column, the second sub-part 322 may be located between the red pixel column and the green pixel column, and the third sub-part 323 may be located between the red pixel column and the blue pixel column.

[0075] It should be noted that, since the color filter layer 30 is disposed on the opposing substrate 12 in this embodiment, compared to directly disposing the color filter layer 30 on the light-emitting functional layer 21, damage to the light-emitting functional layer 21 caused by the color filter layer 30 during exposure and development can be avoided. Furthermore, it is not necessary to increase the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 to reduce the damage to the light-emitting functional layer 21 caused by the manufacturing process of the color filter layer 30. Therefore, the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 can be reduced, thereby reducing the distance between them. This further reduces the obstruction of the black matrix 32 to the light emitted from the light-emitting part 211 at a wide viewing angle, further improving the viewing angle of the display panel.

[0076] In some embodiments, the display panel further includes an encapsulation layer 40 disposed between the light-emitting functional layer 21 and the color filter layer 30, wherein the encapsulation layer 40 may be located between the second insulating layer 53 and the color filter layer 30; wherein the encapsulation layer 40 includes an organic encapsulation layer 41.

[0077] In other embodiments of this application, the encapsulation layer 40 may further include an inorganic encapsulation layer (not shown in the figure), and the inorganic encapsulation layer may be located between the light-emitting functional layer 21 and the organic encapsulation layer 41, or the inorganic encapsulation layer may be located between the color filter layer 30 and the organic encapsulation layer 41, or the inorganic encapsulation layer may be located between the light-emitting functional layer 21 and the organic encapsulation layer 41, and also between the color filter layer 30 and the organic encapsulation layer 41.

[0078] Referring to Figure 4, compared to the display panel shown in Figure 1, the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 can be reduced in this embodiment. The thickest layer between the color filter layer 30 and the light-emitting functional layer 21 is the organic encapsulation layer 41. Therefore, the thickness of the organic encapsulation layer 41 can be reduced to decrease the distance between the black matrix 32 and the light-emitting part 211, thereby reducing the blocking effect of the black matrix 32 on the light-emitting part 211's light emission viewing angle. In some embodiments, the distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel has a first value, and the thickness H2 of the organic encapsulation layer 41 in the display area of ​​the display panel has a second value. The ratio of the second value to the first value is less than or equal to 0.8. For example, the ratio of the second value to the first value can be 0.8, 0.79, 0.78, 0.77, 0.76, or 0.75. In this embodiment of the application, the spacing H1 can be controlled by controlling the thickness H2. On the one hand, the organic encapsulation layer 41 can buffer stress and flatten the surface. On the other hand, the thickness of the organic encapsulation layer 41 is reduced to improve the light emission angle.

[0079] In some embodiments, the distance H1 between the light-emitting portion 211 and the opposing substrate 12 along the thickness direction of the display panel is less than or equal to 10 micrometers. For example, the distance H1 between the light-emitting portion 211 and the opposing substrate 12 along the thickness direction of the display panel can be 10 micrometers, 9 micrometers, 8 micrometers, 7 micrometers or 6 micrometers.

[0080] In some embodiments, the first value decreases as the second value decreases, and the decrease in the first value is equal to the decrease in the second value. In this embodiment, the decrease in the spacing H1 is achieved by the decrease in the thickness H2.

[0081] In some embodiments, referring to Figure 1, at a preset viewing angle C, the first ray 2110 is a ray emitted from the edge of the black matrix 32, and the ray to the right of the first ray 2110 will be blocked by the black matrix 32; where n1sinA=n2sinB=n3sinC, n1 is the refractive index of the encapsulation layer 40, n2 is the refractive index of the color resist block 31, n3 is the refractive index of air, A is the incident angle of the first ray 2110 at the point where the encapsulation layer 40 enters the color resist block 31 as seen at the preset viewing angle C, and B is the incident angle of the first ray 2110 at the point where the color resist block 31 enters the opposing substrate 12.

[0082] In some embodiments, when the organic encapsulation layer 41 covers the side of the color resist block 31 away from the opposing substrate 12, n1 can be the refractive index of the organic encapsulation layer 41.

[0083] Furthermore, under the preset viewing angle C, the formula for calculating the light-blocking width of the black matrix 32 relative to the adjacent light-emitting part 211 is as follows:

[0084] w = w5 - w6;

[0085] Where w5 = w3 + w4, w6 = (w1 - w2) / 2, and w1 is the width of the retaining wall 22, and w2 is the width of the black matrix 32.

[0086] Furthermore, w3 = h1TanA, w4 = h2TanB, where h1 is the distance between the light-emitting part 211 and the color resist block 31, and h2 is the thickness of the color resist block 31.

[0087] Therefore, the formula for calculating the light-blocking width w of the black matrix 32 to the adjacent light-emitting part 211 under the preset viewing angle C is as follows:

[0088] w = h1TanA + h2TanB - (w1 - w2) / 2;

[0089] A = arcsin[(n3sinC) / n1];

[0090] B = arcsin[(n³sinC) / n²];

[0091] Among them, n1, n2, n3, C, w1, and w2 can all be known conditions, so the shading width w can be obtained.

[0092] It is understandable that, as can be seen from the calculation formula of the light-shielding width w, as the distance h1 between the light-emitting part 211 and the color resist block 31 and the thickness h2 of the color resist block 31 decrease, the light-shielding width w will also decrease. Since the distance h1 is equal to the sum of the distance h1 and the thickness h2, the present application embodiment can effectively reduce the light-shielding width w of the black matrix 32 to the adjacent light-emitting part 211 by reducing the distance h1, thereby improving the viewing angle range of the display panel.

[0093] In some embodiments, the thickness H2 of the organic encapsulation layer 41 within the display area of ​​the display panel can be equal to the distance h1 between the light-emitting portion 211 and the color resist block 31.

[0094] Furthermore, referring to Figures 1 and 5, this application provides a first set of viewing angle verification embodiments, a second set of viewing angle verification embodiments, and a third set of viewing angle verification embodiments to verify the changes in the light emission viewing angle of the display panel caused by different settings of the color filter layer 30.

[0095] Specifically, the first set of perspective verification embodiments includes Comparative Example 1, Comparative Example 2, Comparative Example 3, Example 1, Example 2, and Example 3.

[0096] In Comparative Example 1, the structure of the color filter layer 30 in the display panel is shown in region A of FIG5. The opposing substrate 12 does not have the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers.

[0097] In Comparative Example 2, the structure of the color filter layer 30 in the display panel is shown in region B of FIG5. The opposing substrate 12 is provided with the color resist block 31, but not with the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers.

[0098] In Comparative Example 3, the structure of the color filter layer 30 in the display panel is shown in region C of Figure 5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers. The width of the black matrix 32 is 20 micrometers.

[0099] In Embodiment 1, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers. The width of the black matrix 32 is 13 micrometers.

[0100] In Embodiment 2, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers. The width of the black matrix 32 is 9 micrometers.

[0101] In Embodiment 3, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers. The width of the black matrix 32 is 5 micrometers.

[0102] The second set of perspective verification embodiments includes Comparative Example 1, Comparative Example 2, Comparative Example 4, Example 4, Example 5, and Example 6.

[0103] In Comparative Example 1, the structure of the color filter layer 30 in the display panel is shown in region A of FIG5. The opposing substrate 12 does not have the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers.

[0104] In Comparative Example 2, the structure of the color filter layer 30 in the display panel is shown in region B of FIG5. The opposing substrate 12 is provided with the color resist block 31, but not with the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers.

[0105] In Comparative Example 4, the structure of the color filter layer 30 in the display panel is shown in region C of Figure 5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 10 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 8 micrometers. The width of the black matrix 32 is 20 micrometers.

[0106] In Embodiment 4, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 10 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness of the organic encapsulation layer 41 is 8 micrometers. The width of the black matrix 32 is 13 micrometers.

[0107] In Embodiment 5, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 10 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 8 micrometers. The width of the black matrix 32 is 9 micrometers.

[0108] In Embodiment 6, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 10 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 8 micrometers. The width of the black matrix 32 is 5 micrometers.

[0109] The third set of perspective verification embodiments includes Comparative Example 1, Comparative Example 2, Comparative Example 5, Example 7, Example 8, and Example 9.

[0110] In Comparative Example 1, the structure of the color filter layer 30 in the display panel is shown in region A of FIG5. The opposing substrate 12 does not have the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers.

[0111] In Comparative Example 2, the structure of the color filter layer 30 in the display panel is shown in region B of FIG5. The opposing substrate 12 is provided with the color resist block 31, but not with the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 9 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 7 micrometers.

[0112] In Comparative Example 5, the structure of the color filter layer 30 in the display panel is shown in region C of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 11 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 9 micrometers. The width of the black matrix 32 is 20 micrometers.

[0113] In Embodiment 7, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 11 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 9 micrometers. The width of the black matrix 32 is 13 micrometers.

[0114] In embodiment 8, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 11 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 9 micrometers. The width of the black matrix 32 is 9 micrometers.

[0115] In Embodiment 9, the structure of the color filter layer 30 in the display panel is shown in region D of FIG5. The opposing substrate 12 is provided with the color resist block 31 and the black matrix 32. The distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel is 11 micrometers. The thickness of the color resist block 31 is 2 micrometers. The thickness H2 of the organic encapsulation layer 41 is 9 micrometers. The width of the black matrix 32 is 5 micrometers.

[0116] Following the above, after verification, the data shown in Table 1 and the brightness-viewing angle curves shown in Figures 6, 7 and 8 were obtained. Figure 6 is the brightness-viewing angle curve obtained from the first set of viewing angle verification embodiments, Figure 7 is the brightness-viewing angle curve obtained from the second set of viewing angle verification embodiments, and Figure 8 is the brightness-viewing angle curve obtained from the third set of viewing angle verification embodiments.

[0117] Table 1

[0118]

[0119] As shown in Table 1 and Figures 6 to 8 above, as the width of the black matrix 32 decreases, the brightness of the display panel at the same viewing angle increases. Furthermore, as the distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel decreases, the brightness of the display panel at the same viewing angle also increases. This indicates that in this embodiment, by reducing the width of the black matrix 32 and the distance H1 between the light-emitting part 211 and the opposing substrate 12 along the thickness direction of the display panel, the blocking effect of the black matrix 32 on the light-emitting part 211's light-emitting viewing angle can be effectively reduced, thereby effectively improving the light-emitting viewing angle of the light-emitting part 211 and the viewing angle of the display panel.

[0120] Continuing from the above, this embodiment of the application reduces the width of the black matrix 32, making it smaller than the width of the barrier 22, thereby effectively reducing the impact of the black matrix 32 on the light emission angle of the display panel and improving the viewing angle of the display panel. Furthermore, in this embodiment, the color filter layer 30 is disposed on the opposing substrate 12. Compared to directly disposing the color filter layer 30 on the light-emitting functional layer 21, this avoids damage to the light-emitting functional layer 21 during the exposure and development process. It also eliminates the need to increase the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 to reduce the damage to the light-emitting functional layer 21 caused by the manufacturing process of the color filter layer 30. Therefore, reducing the thickness of the film layer between the color filter layer 30 and the light-emitting functional layer 21 reduces the distance between them, further reducing the obstruction of the black matrix 32 on the wide-viewing-angle light emission of the light-emitting part 211, and further improving the viewing angle of the display panel.

[0121] In addition, this application provides a display device, which includes the display panel described in the above embodiments.

[0122] It is understood that since the display device has the display panel described in the above embodiments, the display device has the same beneficial effects as the display panel, which will not be repeated here.

[0123] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0124] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0125] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0126] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel comprising: Array substrate; A light-emitting functional layer is disposed on the array substrate, and the light-emitting functional layer includes a plurality of light-emitting parts; A barrier is disposed on the array substrate and located between adjacent light-emitting parts; A color filter layer is disposed on the side of the light-emitting functional layer away from the array substrate. The color filter layer includes a plurality of color resist blocks and a black matrix located between adjacent color resist blocks. The plurality of color resist blocks are disposed corresponding to a plurality of light-emitting parts. The plurality of color resist blocks include a first color resist block, a second color resist block, and a third color resist block. The black matrix includes a first sub-part located between the first color resist block and the second color resist block, a second sub-part located between the first color resist block and the third color resist block, and a third sub-part located between the second color resist block and the third color resist block. Wherein, the width of the first sub-part is greater than or equal to the width of the second sub-part, the width of the second sub-part is greater than or equal to the width of the third sub-part, and the width of the black matrix is ​​less than or equal to the width of the retaining wall.

2. The display panel according to claim 1, wherein, The orthographic projection of the black matrix on the array substrate is within the coverage area of ​​the orthographic projection of the barrier wall on the array substrate.

3. The display panel according to claim 2, wherein, The edges of the orthographic projection of the black matrix on the array substrate are spaced apart from the edges of the orthographic projection of the retaining wall on the array substrate.

4. The display panel according to claim 1, wherein, The first color resist is a green color resist, the second color resist is a blue color resist, and the third color resist is a red color resist. The width of the first sub-part is greater than the width of the second sub-part, and the width of the second sub-part is greater than the width of the third sub-part.

5. The display panel according to any one of claims 1 to 4, wherein, The display panel further includes a counter substrate disposed on the side of the light-emitting functional layer away from the array substrate, the color filter layer disposed on the surface of the counter substrate close to the array substrate, and the black matrix is ​​in contact with the counter substrate, and the color resist block is in contact with the counter substrate.

6. The display panel according to claim 5, wherein, The display panel further includes an encapsulation layer disposed between the light-emitting functional layer and the color filter layer. Under a preset viewing angle, the formula for calculating the light-blocking width of the black matrix relative to the adjacent light-emitting portion is: w = h1TanA + h2TanB - (w1 - w2) / 2; A = arcsin[(n3sinC) / n1]; B = arcsin[(n³sinC) / n²]; Wherein, w is the light-shielding width, h1 is the distance between the light-emitting part and the color resist block, h2 is the thickness of the color resist block, w1 is the width of the barrier, w2 is the width of the black matrix, n1 is the refractive index of the encapsulation layer, n2 is the refractive index of the color resist block, n3 is the refractive index of air, A is the incident angle of the first ray seen at the point where the encapsulation layer enters the color resist block under the preset viewing angle, B is the incident angle of the first ray at the point where the color resist block enters the opposing substrate, and C is the preset viewing angle.

7. The display panel according to claim 6, wherein, The encapsulation layer includes an organic encapsulation layer. The distance between the light-emitting part and the opposing substrate along the thickness direction of the display panel has a first value. The thickness of the organic encapsulation layer in the display area of ​​the display panel has a second value. The first value decreases as the second value decreases, and the decrease in the first value is equal to the decrease in the second value.

8. The display panel according to claim 7, wherein, The distance between the light-emitting part and the opposing substrate along the thickness direction of the display panel is less than or equal to 10 micrometers.

9. The display panel according to claim 1, wherein, The display panel further includes a touch electrode layer disposed between the light-emitting functional layer and the color filter layer, wherein the orthographic projection of the touch electrode layer on the array substrate is located within the coverage area of ​​the orthographic projection of the black matrix on the array substrate.

10. The display panel according to claim 1, wherein, The width of the black matrix is ​​greater than or equal to 4.5 micrometers and less than 20 micrometers.

11. A display device, the display device comprising a display panel, the display panel comprising: Array substrate; A light-emitting functional layer is disposed on the array substrate, and the light-emitting functional layer includes a plurality of light-emitting parts; A barrier is disposed on the array substrate and located between adjacent light-emitting parts; A color filter layer is disposed on the side of the light-emitting functional layer away from the array substrate. The color filter layer includes a plurality of color resist blocks and a black matrix located between adjacent color resist blocks. The plurality of color resist blocks are disposed corresponding to a plurality of light-emitting parts. The plurality of color resist blocks include a first color resist block, a second color resist block, and a third color resist block. The black matrix includes a first sub-part located between the first color resist block and the second color resist block, a second sub-part located between the first color resist block and the third color resist block, and a third sub-part located between the second color resist block and the third color resist block. Wherein, the width of the first sub-part is greater than or equal to the width of the second sub-part, the width of the second sub-part is greater than or equal to the width of the third sub-part, and the width of the black matrix is ​​less than or equal to the width of the retaining wall.

12. The display device according to claim 11, wherein, The orthographic projection of the black matrix on the array substrate is within the coverage area of ​​the orthographic projection of the barrier wall on the array substrate.

13. The display device according to claim 12, wherein, The edges of the orthographic projection of the black matrix on the array substrate are spaced apart from the edges of the orthographic projection of the retaining wall on the array substrate.

14. The display device according to claim 11, wherein, The first color resist is a green color resist, the second color resist is a blue color resist, and the third color resist is a red color resist. The width of the first sub-part is greater than the width of the second sub-part, and the width of the second sub-part is greater than the width of the third sub-part.

15. The display device according to any one of claims 11 to 14, wherein, The display panel further includes a counter substrate disposed on the side of the light-emitting functional layer away from the array substrate, the color filter layer disposed on the surface of the counter substrate close to the array substrate, and the black matrix is ​​in contact with the counter substrate, and the color resist block is in contact with the counter substrate.

16. The display device according to claim 15, wherein, The display panel further includes an encapsulation layer disposed between the light-emitting functional layer and the color filter layer. Under a preset viewing angle, the formula for calculating the light-blocking width of the black matrix relative to the adjacent light-emitting portion is: w = h1TanA + h2TanB - (w1 - w2) / 2; A = arcsin[(n3sinC) / n1]; B = arcsin[(n³sinC) / n²]; Wherein, w is the light-shielding width, h1 is the distance between the light-emitting part and the color resist block, h2 is the thickness of the color resist block, w1 is the width of the barrier, w2 is the width of the black matrix, n1 is the refractive index of the encapsulation layer, n2 is the refractive index of the color resist block, n3 is the refractive index of air, A is the incident angle of the first ray seen at the point where the encapsulation layer enters the color resist block under the preset viewing angle, B is the incident angle of the first ray at the point where the color resist block enters the opposing substrate, and C is the preset viewing angle.

17. The display device according to claim 16, wherein, The encapsulation layer includes an organic encapsulation layer. The distance between the light-emitting part and the opposing substrate along the thickness direction of the display panel has a first value. The thickness of the organic encapsulation layer in the display area of ​​the display panel has a second value. The first value decreases as the second value decreases, and the decrease in the first value is equal to the decrease in the second value.

18. The display device according to claim 17, wherein, The distance between the light-emitting part and the opposing substrate along the thickness direction of the display panel is less than or equal to 10 micrometers.

19. The display device according to claim 11, wherein, The display panel further includes a touch electrode layer disposed between the light-emitting functional layer and the color filter layer, wherein the orthographic projection of the touch electrode layer on the array substrate is located within the coverage area of ​​the orthographic projection of the black matrix on the array substrate.

20. The display device according to claim 11, wherein, The width of the black matrix is ​​greater than or equal to 4.5 micrometers and less than 20 micrometers.

Images