Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate, a light emitting unit, a packaging layer, a black matrix layer and a color resistance layer. The thickness of the first color resistance units distributed in the edge display area is set to be larger than or equal to the thickness of the first color resistance units distributed in the main display area, so that the problem that four sides are shiny due to the fact that the color resistance units in the edge display area are too thin can be solved. Moreover, the thickness of the first color resistance units distributed in the edge display area is adjusted, and the thickness of the first color resistance units close to the main display area is smaller than that of the first color resistance units far away from the main display area, so that the thickness difference of the first color resistance units of the main display area and the edge display area can be reduced, and the display effect is improved. Therefore, the brightness difference at the junction of the main display area and the edge display area is reduced, and the display effect can be improved.

Description

Display panel and display device Technical Field

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

[0002] A display panel is a device used to display images and text.

[0003] Current display panels include a substrate, light-emitting units located in the display area of ​​the substrate and arranged in a direction away from the substrate, an encapsulation layer, and a color resist layer. The color resist layer allows light of a specific color to pass through while blocking light of other colors, thus achieving a light filtering function. The thickness of the color resist layer is negatively correlated with its light transmittance; therefore, a thinner color resist layer results in a brighter light emitted by the display panel.

[0004] However, since the aforementioned encapsulation layer has a shape that is thicker in the middle and thinner at the edges, the material of the color resist layer at the edges tends to flow to areas outside the display area. This makes the thickness of the color resist layer at the edges thinner, which leads to the problem of bright edges in the display area, resulting in poor display effect.

[0005] Summary of the Invention

[0006] This application provides a display panel and a display device. The technical solution is as follows:

[0007] According to one aspect of this application, a display panel is provided, the display panel comprising: a substrate, a light-emitting unit, an encapsulation layer, a black matrix layer, and a color resist layer;

[0008] The light-emitting unit is located on one side of the substrate;

[0009] The encapsulation layer is located on the side of the light-emitting unit away from the substrate;

[0010] Both the black matrix layer and the color resist layer are located on the side of the encapsulation layer away from the substrate. The black matrix layer has a plurality of first openings. The color resist layer includes a plurality of first color resist units of the same color. Each first color resist unit includes a main body portion. The orthographic projection of the main body portion of the first color resist unit on the substrate is located within the orthographic projection of the corresponding first opening on the substrate.

[0011] The thickness of the main body of the first color resist unit distributed in the edge display area is greater than or equal to the thickness of the main body of the first color resist unit distributed in the main display area; for two different first color resist units distributed in the edge display area, the thickness of the main body of the first color resist unit closer to the main display area is less than the thickness of the main body of the first color resist unit further away from the main display area.

[0012] Optionally, for a row of first color resist units distributed in the edge display area and arranged towards the main display area, the thickness of the main body of each first color resist unit in the row of first color resist units decreases sequentially in the direction towards the main display area.

[0013] Optionally, the display panel further includes: a plurality of limiting portions located on the side of the black matrix layer away from the encapsulation layer, the plurality of limiting portions corresponding to a plurality of first color resist units distributed in the edge display area, the limiting portions having a main cutout area, and the orthographic projection of the main cutout area of ​​the limiting portions on the substrate covering the orthographic projection of the corresponding first color resist unit on the substrate.

[0014] The area of ​​the orthographic projection of the limiting part on the substrate is positively correlated with the thickness of the main body of the corresponding first color resist unit.

[0015] Optionally, the area of ​​the main cutout area of ​​the limiting portion projected onto the substrate is negatively correlated with the thickness of the main body of the corresponding first color resist unit.

[0016] Optionally, the limiting part also has multiple auxiliary hollow areas;

[0017] The sum of the areas of the orthogonal projections of the multiple auxiliary cutout areas in the limiting portion onto the substrate is negatively correlated with the thickness of the main body of the corresponding first color resist unit.

[0018] Optionally, within the same limiting portion, the plurality of auxiliary hollow areas are distributed around the main hollow area;

[0019] The central angles of the auxiliary hollow areas in the same limiting part are all the same, and the central angles of the different auxiliary hollow areas in different limiting parts are also the same. The number of auxiliary hollow areas in the limiting part is negatively correlated with the thickness of the main body of the corresponding first color resist unit.

[0020] Alternatively, the number of auxiliary cutout areas in each of the limiting portions is the same, and the central angle of each auxiliary cutout area in the same limiting portion is the same. The central angle of the auxiliary cutout area in the limiting portion is negatively correlated with the thickness of the main body of the corresponding first color resist unit.

[0021] Optionally, in the same limiting part, each of the auxiliary hollow areas is connected to the main hollow area.

[0022] Optionally, among the plurality of limiting portions, some of the limiting portions have only the main hollow area, while other portions of the limiting portions have both the main hollow area and the auxiliary hollow area;

[0023] The limiting part that has both the main cutout area and the auxiliary cutout area is closer to the main display area than the limiting part that only has the main cutout area.

[0024] Optionally, the color resist layer further includes: a plurality of second color resist units of the same color and a plurality of third color resist units of the same color;

[0025] Wherein, the limiting part is disposed in the same layer as the second color resist unit and is made of the same material, and / or, the limiting part is disposed in the same layer as the third color resist unit and is made of the same material.

[0026] Optionally, the display panel further includes: a plurality of barriers located on the side of the black matrix layer opposite to the encapsulation layer, wherein the barriers are all located within the edge display area and are distributed around the main display area, and the plurality of barriers are arranged in a nested manner.

[0027] Wherein, the orthographic projection of the dam on the substrate does not coincide with the orthographic projection of the first color resist unit on the substrate, and the distance between two adjacent dams is negatively correlated with the thickness of the main body of the first color resist unit distributed between the two adjacent dams.

[0028] Optionally, the number of dams is three or more; the distance between two adjacent dams among the plurality of dams increases sequentially in the direction toward the main display area.

[0029] Optionally, the number of rows of the first color resist units distributed between two adjacent dams in the plurality of dams increases sequentially in the direction toward the main display area.

[0030] Optionally, the color resist layer further includes: a plurality of second color resist units of the same color and a plurality of third color resist units of the same color, wherein the dam and the second color resist units are in the same layer, and / or the dam and the third color resist units are in the same layer.

[0031] Optionally, the display panel further includes: an organic cover layer located between the encapsulation layer and the black matrix layer; the organic cover layer has a plurality of recessed structures on the side away from the substrate, the plurality of recessed structures respectively corresponding to a plurality of first openings distributed in the edge display area, and respectively corresponding to a plurality of first color resist units distributed in the edge display area; the recessed structures are connected to the corresponding first openings, and the orthographic projection of the recessed structure on the substrate overlaps with the orthographic projection of the corresponding first color resist unit on the substrate;

[0032] The depth of the recessed structure in the direction perpendicular to the substrate is positively correlated with the thickness of the main body of the corresponding first color resist unit.

[0033] Optionally, for the recessed structure with the greatest depth in the direction perpendicular to the substrate, the depth of the recessed structure is less than or equal to the thickness of the organic capping layer.

[0034] Optionally, the display panel further includes: a plurality of light-transmitting structures, each of which corresponds to a plurality of first openings distributed in the edge display area, and at least a portion of the light-transmitting structures is located within the corresponding first opening;

[0035] The thickness of the plurality of light-transmitting structures in the direction perpendicular to the substrate is negatively correlated with the thickness of the main body of the corresponding first color resist unit.

[0036] Optionally, the display panel further includes an organic cover layer located between the encapsulation layer and the black matrix layer, wherein the plurality of light-transmitting structures are in contact with the side of the organic cover layer opposite to the substrate;

[0037] The refractive index of the light-transmitting structure is higher than that of the organic coating layer.

[0038] Optionally, the first color resist unit includes a green color resist material.

[0039] Optionally, the display panel further includes: a buffer layer located on the side of the encapsulation layer opposite to the substrate, a touch electrode layer located on the side of the buffer layer opposite to the substrate, and an organic cover layer located on the side of the touch electrode layer opposite to the substrate.

[0040] The black matrix layer and the color resist layer are both located on the side of the organic capping layer that is away from the substrate.

[0041] On the other hand, a display device is provided, the display device including a power supply component and any of the above-described display panels.

[0042] The beneficial effects of the technical solutions provided in this application include at least the following:

[0043] A display panel including a substrate, light-emitting units, an encapsulation layer, a black matrix layer, and a color resist layer is provided. By setting the thickness of the first color resist units distributed in the edge display area to be greater than or equal to the thickness of the first color resist units distributed in the main display area, the problem of edge brightening caused by the color resist units in the edge display area being too thin can be avoided. Furthermore, this application also adjusts the thickness of the first color resist units distributed in the edge display area. Compared with the first color resist units far from the main display area, the thickness of the first color resist units closer to the main display area is smaller, thereby reducing the thickness difference of the first color resist units in the main display area and the edge display area, reducing the brightness difference at the boundary between the main display area and the edge display area, and thus improving the display effect. Attached Figure Description

[0044] 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 accompanying 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.

[0045] Figure 1 is a display effect diagram of a display panel;

[0046] Figure 2 is a schematic diagram of the thickness of the display panel shown in Figure 1;

[0047] Figure 3 is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0048] Figure 4 is a cross-sectional structural diagram of the display panel shown in Figure 3;

[0049] Figure 5 is a cross-sectional structural diagram of the display panel shown in Figure 3;

[0050] Figure 6 is a top view of a portion of the structure in another display panel provided in this application;

[0051] Figure 7 is a cross-sectional structural diagram of the display panel shown in Figure 6;

[0052] Figure 8 is a schematic diagram of the manufacturing process of some structures in the display panel shown in Figure 7;

[0053] Figure 9 is a top view of a portion of the structure in another display panel provided in this application;

[0054] Figure 10 is a top view of a portion of the structure in another display panel provided in this application;

[0055] Figure 11 is a top view of a portion of the structure in another display panel provided in this application;

[0056] Figure 12 is a schematic diagram of another cross-sectional structure of the display panel shown in Figure 6;

[0057] Figure 13 is a top view of a portion of the structure in another display panel provided in this application;

[0058] Figure 14 is a schematic cross-sectional structure of the display panel shown in Figure 13;

[0059] Figure 15 is a structural schematic diagram of a portion of the structure in another display panel provided in this application;

[0060] Figure 16 is a structural schematic diagram of a portion of the structure in another display panel provided in this application;

[0061] Figure 17 is a structural schematic diagram of a portion of the structure in another display panel provided in this application;

[0062] Figure 18 is a structural schematic diagram of a portion of the structure in another display panel provided in this application.

[0063] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0065] Figure 1 shows the display effect of a display panel 20, which includes a main display area A1 and an edge display area A2. The edge display area A2 has higher brightness, resulting in edge brightening and a poor display effect of the display panel 20. The reason for edge brightening is shown in Figure 2, which is a thickness diagram of the display panel shown in Figure 1. The display panel 20 includes a back panel 21, an encapsulation layer 22, and a color resist layer 23. Area B1 shows the thickness curves of the back panel 21 and the encapsulation layer 22 at different locations. The horizontal axis represents the position in micrometers; a larger value on the horizontal axis indicates a position closer to the main display area A1. The vertical axis represents the thickness in angstroms. As can be seen from the thickness curve of the encapsulation layer 22, the thickness of the encapsulation layer 22 in the edge display area A2 is relatively thinner than that in the normal display area A1. The edge of the encapsulation layer 22 can be sloping. The thickness of the encapsulation layer 22 in the low-lying area A3 shows a significant decrease. The low-lying area A3 can include the isolation dam area outside the edge display area A2 and the border area.

[0066] In Figure 2, region B2 is a schematic diagram of the morphology of the color resist layer 23. Because the material of the color resist layer 23 has low viscosity and high fluidity, the material of the color resist layer 23 in the edge display area A2 easily flows to the low-lying area A3. Therefore, the thickness of the color resist layer 23 in the edge display area A2 is relatively thin, and the thickness of the portion of the color resist layer 23 further away from the main display area A1 is even smaller. This easily leads to increased light transmittance in the edge display area A2, ultimately resulting in higher brightness in the edge display area A2 and the problem of bright edges. For example, the distance between this thinner region and the isolation dam is approximately 3 mm to 4 mm.

[0067] Furthermore, if the color resist units within the edge display area A2 are all increased in thickness by the same amount, there may be an overcompensation issue in the thickness of the color resist units at the boundary between the main display area A1 and the edge display area A2. This could result in the actual thickness of the color resist units at this boundary being too large, potentially causing a sudden darkening of the boundary. Moreover, the main display area A1 and the edge display area A2 are within a predetermined range. For multiple display panels, the boundary where the encapsulation layer 22 thins is not fixed. Therefore, the boundaries where their four sides are illuminated are also not fixed. Some color resist units that are not thinned by the encapsulation layer 22 may be assigned to the edge display area A2, causing the actual thickness of these color resist units to be significantly greater than the thickness of the color resist units in display area A1, which could also lead to a sudden darkening of the boundary.

[0068] This application provides a display panel. Please refer to Figures 3 and 4. Figure 3 is a structural schematic diagram of a display panel provided in this application embodiment, and Figure 4 is a cross-sectional structural schematic diagram of the display panel provided in Figure 3 (Figure 4 can be a cross-sectional structural schematic diagram of the display panel provided in Figure 3 at C1-C1). The display panel 10 has a main display area A1 and an edge display area A2, with the edge display area A2 distributed at least around the main display area A1. The display panel 10 includes: a substrate 11, a light-emitting unit 12, an encapsulation layer 13, a black matrix layer 15, and a color resist layer 14. Here, the display panel 10 can be an organic light-emitting diode (OLED) display panel. For example, the OLED display panel provided in this application can employ color filter on encapsulation (COE) technology. COE technology replaces the polarizer by manufacturing a color resist layer on the encapsulation layer, which can achieve the effect of reducing thickness and increasing brightness.

[0069] The main display area A1 and the edge display area A2 of the display panel 10 can be areas for displaying images or text. The display panel 10 also has a border area located outside the edge display area A2, which can be used to set up circuit structures. As shown in Figure 3, the edge display area A2 is distributed around the main display area A1. In addition, the display panel 10 may also include some openings corresponding to functional modules, such as camera holes, and the edge display area A2 may also be included in the edge area at the opening. For example, in the direction parallel to the substrate 11, the width of the edge display area A2 can be 4 mm to 5 mm.

[0070] The light-emitting unit 12 is located on one side of the substrate 11. Here, the light-emitting unit 12 is used to emit a light beam in a direction away from the substrate 11. The number of light-emitting units 12 in the display panel 10 is usually multiple. Some of the multiple light-emitting units 12 can be distributed in the main display area A1, and other light-emitting units 12 can be distributed in the edge display area A2. In this application, each light-emitting unit 12 can be electrically connected to the substrate 11, and the substrate 11 can control the light-emitting state and brightness of each light-emitting unit 12.

[0071] The encapsulation layer 13 is located on the side of the light-emitting unit 12 away from the substrate 11. Here, the encapsulation layer 13 can cover each light-emitting unit 12 located on the substrate 11, thereby encapsulating each light-emitting unit 12 to prevent water and oxygen in the external environment from corroding the light-emitting unit 12 and causing it to fail. The encapsulation layer 13 may include an organic encapsulation layer, which can be formed by inkjet printing (IJP) technology. The organic encapsulation layer tends to have a shape that is thick in the middle and thin at the edges, and the edges of the organic encapsulation layer tend to be sloped. The encapsulation layer 13 may also include an inorganic encapsulation layer. For example, the encapsulation layer 13 may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked together.

[0072] Both the black matrix layer 15 and the color resist layer 14 are located on the side of the encapsulation layer 13 facing away from the substrate 11. Here, the black matrix layer 15 may have multiple openings corresponding to multiple light-emitting units 12. The black matrix layer 15 includes a light-shielding material that can block the light between two adjacent light-emitting units 12, thereby avoiding crosstalk between two adjacent light-emitting units 12.

[0073] The color resist layer 14 may include a plurality of color resist units corresponding to a plurality of light-emitting units 12. The orthographic projection of each light-emitting unit 12 onto the substrate 11 may lie within the orthographic projection of its corresponding opening onto the substrate 11, and also within the orthographic projection of its corresponding color resist unit onto the substrate 11. The plurality of color resist units in the color resist layer 14 may correspond to a plurality of openings in the black matrix layer 15, and at least a portion of each color resist unit may be distributed within its corresponding opening.

[0074] In this way, the light emitted from each light-emitting unit 12 can pass through the corresponding color resist unit before being emitted. During the process of the light emitted from the light-emitting unit 12 passing through the corresponding color resist unit, the color resist unit can transmit the light of a specific color emitted by the light-emitting unit 12 while filtering out the light of other colors, thereby ensuring good color accuracy of the display panel during the display process.

[0075] For example, the black matrix layer 15 has a plurality of first openings K1, and the color resist layer 14 includes a plurality of first color resist units 141 of the same color. Each first color resist unit 141 includes a main body 1411. The orthographic projection of the main body 1411 of the first color resist unit 141 on the substrate 11 is located within the orthographic projection of the corresponding first opening K1 on the substrate 11.

[0076] It should be noted that the first color resist unit 141 here includes not only the main body 1411, but also the edge portion 1412. In the same first color resist unit 141, the edge portion 1412 can be distributed around the main body 1411, and the orthographic projection of the edge portion 1412 in the first color resist unit 141 on the substrate 11 can be located outside the orthographic projection of the corresponding first opening K1 on the substrate 11.

[0077] Specifically, the thickness E2 of the main body portion 1411 of the first color resist unit 141 distributed in the edge display area A2 is greater than or equal to the thickness E1 of the main body portion 1411 of the first color resist unit 141 distributed in the main display area A1. For two different first color resist units 141 distributed in the edge display area A2, the thickness E21 of the main body portion 1411 of the first color resist unit 141 closer to the main display area A1 is less than the thickness E22 of the main body portion 1411 of the first color resist unit 141 further away from the main display area A1.

[0078] It should be noted that, as shown in Figure 4, the two different first color resist units 141 distributed in the edge display area A2 are adjacent, but this embodiment of the application does not impose such a limitation. Among the multiple first color resist units 141 distributed in the edge display area A2, the thickness E2 of the main body portion 1411 of any two first color resist units 141 with different distances relative to the main display area A1 can satisfy the above conditions. Here, by setting E21 < E22, the thickness difference of the first color resist units 141 at the junction of the main display area A1 and the edge display area A2 can be reduced, thereby improving the display effect.

[0079] In summary, this application provides a display panel including a substrate, light-emitting units, an encapsulation layer, a black matrix layer, and a color resist layer. By setting the thickness of the first color resist units distributed in the edge display area to be greater than or equal to the thickness of the first color resist units distributed in the main display area, the problem of edge brightening caused by the color resist units in the edge display area being too thin can be avoided. Furthermore, this application also adjusts the thickness of the first color resist units distributed in the edge display area. Compared to the first color resist units farther from the main display area, the thickness of the first color resist units closer to the main display area is smaller, thereby reducing the thickness difference of the first color resist units in the main display area and the edge display area, thus reducing the brightness difference at the boundary between the main display area and the edge display area, and thereby improving the display effect.

[0080] Optionally, in the display panel provided in this application, the thickness of the first color resist unit distributed in the edge display area can also be gradient-variable. Please refer to Figure 5. Figure 5 is a schematic diagram of another cross-sectional structure of the display panel provided in Figure 3 (Figure 5 can be a schematic diagram of the cross-sectional structure of the display panel provided in Figure 3 at C2-C2). For a row of first color resist units 141 distributed in the edge display area A2 and arranged towards the main display area A1, the thickness E2 of the main body portion 1411 of each first color resist unit 141 in the row of first color resist units 141 decreases sequentially in the direction towards the main display area A1.

[0081] For example, a row of first color resist units 141 includes three first color resist units 141. Along the direction towards the main display area A1, the thicknesses E2 of the main body portion 1411 of the three first color resist units 141 are E23, E22, and E21, respectively, where E23 < E22 < E21. In this way, the thickness of the first color resist units 141 in the edge display area A2 can achieve a gradient change and can gradually transition to the thickness of the first color resist units 141 in the main display area A1. This avoids the color resist units 141 at the junction of the main display area A1 and the edge display area A2 being too thick, thereby reducing the brightness difference at the junction of the main display area A1 and the edge display area A2, and thus improving the display effect.

[0082] Optionally, the first color resist unit 141 includes a green color resist material. That is, the first color resist unit 141 can transmit green light from the light emitted by the corresponding light-emitting unit 12 while filtering out other colors of light, thereby ensuring good color accuracy of the display panel during image display. Since the human eye is more sensitive to green light, adjusting the thickness of the first color resist unit 141 in the edge display area A2 can effectively improve the human eye's observation effect on the display panel 10.

[0083] This application allows for the adjustment of the thickness of the color resist layer in the edge display area through various exemplary embodiments. Four exemplary embodiments are described below:

[0084] In a first exemplary embodiment, the thickness of the first color resist unit in the edge display area can be adjusted by setting a limiting part.

[0085] Please refer to Figures 6 and 7. Figure 6 is a top view of a portion of the structure of another display panel provided in this application, and Figure 7 is a cross-sectional view of the display panel provided in Figure 6 at C3-C3. The display panel also includes a plurality of limiting portions 16 located on the side of the black matrix layer 15 opposite to the encapsulation layer 13.

[0086] Among them, multiple limiting parts 16 correspond to multiple first color resist units 141 distributed in the edge display area A2. Each limiting part 16 has a main cutout area Q1. The orthographic projection of the main cutout area Q1 of the limiting part 16 on the substrate 11 covers the orthographic projection of the corresponding first color resist unit 141 on the substrate 11.

[0087] In this application, the limiting part 16 can be formed before the first color resist unit 141. When the first color resist unit 141 is formed, since the limiting part 16 surrounds the corresponding first color resist unit 141, the limiting part 16 can block the material of the first color resist unit 141 in the edge display area A2 from flowing out of the display area, thereby compensating for the thickness of the first color resist unit 141 in the edge display area A2.

[0088] Additionally, please refer to Figure 8, which is a schematic diagram of the manufacturing process of a portion of the display panel shown in Figure 6. The manufacturing process of the first color resist unit 141 may include: forming a complete first color resist material layer F, and then performing a patterning process on the first color resist material layer F to obtain the first color resist unit 141 shown in Figure 6. In this embodiment, the patterning process may include an exposure process and a development process. The limiting part 16 may be formed before the first color resist unit 141. When forming the first color resist unit 141, since the limiting part 16 surrounds the corresponding first color resist unit 141, the limiting part 16 can not only block the first color resist material layer F from flowing out of the display area A1, but the limiting part 16 can also increase the height of the black matrix layer 15, allowing more material to flow to the first opening K1, thereby increasing the thickness of the first color resist unit 141 in the edge display area A2.

[0089] The area of ​​the orthogonal projection of the limiting part 16 onto the substrate 11 is positively correlated with the thickness E2 of the main body part 141 of the corresponding first color resist unit 141.

[0090] This is because the larger the area of ​​the orthographic projection of the limiting portion 16 on the substrate 11, the stronger the blocking effect of the limiting portion 16, resulting in more material flowing into the first color resist unit 141 of the second opening K2, thereby increasing the thickness E2 of the main body portion 141 of the first color resist unit 141. Therefore, this application can reduce the thickness difference of the first color resist unit 141 between the main display area A1 and the edge display area A2 by setting a gradient change in the area of ​​the orthographic projection of the limiting portion 16 on the substrate 11. Furthermore, the thickness of the color resist unit 141 closer to the main display area A1 is smaller, which can also avoid the appearance of a sudden darkening boundary, thereby improving the display effect.

[0091] Optionally, the area of ​​the orthographic projection of the limiting portion 16 onto the substrate 11 is related to various factors. This application embodiment will illustrate this with the following three examples:

[0092] In the first case, please refer to Figures 6 and 7. The limiting part 16 only has a cutout area Q1. The area of ​​the main cutout area Q1 of the limiting part 16 projected onto the substrate 11 is negatively correlated with the thickness E2 of the main body 141 of the corresponding first color resist unit 141.

[0093] In this application, the main cutout area Q1 and the first opening K1 can be connected. The larger the area of ​​the orthographic projection of the main cutout area Q1 on the substrate 11, the more material of the first color resist unit 141 can be accommodated in the main cutout area Q1 and the first opening K1, thereby increasing the thickness of the main body 141 of the first color resist unit 141.

[0094] For example, the plurality of limiting portions 16 may include a first limiting portion 161, a second limiting portion 162 and a third limiting portion 163. The first limiting portion 161 is located on the side of the second limiting portion 162 closer to the main display area A1, and the third limiting portion 163 is located on the side of the second limiting portion 162 away from the main display area A1. Along the direction toward the main display area A1, the area of ​​the main cutout area Q1 of the third limiting portion 163, the second limiting portion 162 and the first limiting portion 161 projected onto the substrate 11 increases sequentially, and the thickness of the corresponding first color resist unit 141 decreases sequentially.

[0095] Furthermore, the center of the orthographic projection of the main cutout area Q1 onto the substrate 11 can coincide with the center of the orthographic projection of the corresponding first color resist unit 141 onto the substrate 11. This facilitates control of the thickness of the first color resist unit 141 by adjusting the main cutout area Q1. For example, in this case, the application can adjust the area of ​​the orthographic projection of the main cutout area Q1 onto the substrate 11 by adjusting the distance between the limiting part 16 and the corresponding first opening K1. The distance between the limiting part 16 and the corresponding first opening K1 can be in the range of 2 micrometers to 8 micrometers.

[0096] In the display panels shown in Figures 6 and 7, adjacent limiting portions 16 are connected, meaning that multiple limiting portions 16 can be an integrated structure, which facilitates manufacturing. Alternatively, the multiple limiting portions 16 can also be separated; this embodiment does not limit this.

[0097] In the second scenario, please refer to Figure 9, which is a top view of a portion of the structure of another display panel provided in this application. The limiting part 16 has a main cutout area Q1 and multiple auxiliary cutout areas Q2. The sum of the areas of the orthogonal projections of the multiple auxiliary cutout areas Q2 in the limiting part 16 onto the substrate 11 is negatively correlated with the thickness of the main body 1411 of the corresponding first color resist unit 141.

[0098] In this application, the blocking effect of the auxiliary cutout area Q2 and the limiting part 16 on the material of the first color resist unit 141 is related. The smaller the sum of the areas of the orthographic projection of the multiple auxiliary cutout areas Q2 on the substrate 11, the better the blocking effect of the limiting part 16 on the material of the first color resist unit 141, and thus the greater the thickness of the main body 141 of the first color resist unit 141.

[0099] For example, the auxiliary cutout area Q2 can extend in a direction away from the first color resist unit 141. The size of the auxiliary cutout area Q2 in the extension direction can be in the range of 8 micrometers to 10 micrometers, and the distance between two adjacent auxiliary cutout areas Q2 perpendicular to the extension direction can be in the range of 2 micrometers to 4 micrometers.

[0100] Optionally, multiple auxiliary cutout areas Q2 are distributed around the main cutout area Q1 in the same limiting part 16. Since the number and size of the auxiliary cutout areas Q2 in the limiting part 16 will affect the blocking effect, the embodiments of this application can adopt various methods to adjust the structure of the auxiliary cutout areas Q2 in order to achieve a gradient compensation effect on the thickness of the color resist unit 14 in the edge display area A2.

[0101] Please refer to Figure 9 for an adjustment method of the auxiliary cutout area Q2. The central angles of each auxiliary cutout area Q2 in the same limiting part 16 are the same, and the central angles of different auxiliary cutout areas Q2 in different limiting parts 16 are also the same. The number of auxiliary cutout areas Q2 in the limiting part 16 is negatively correlated with the thickness of the main body of the corresponding first color resist unit 141.

[0102] The central angle of the auxiliary cutout area Q2 is positively correlated with the area of ​​the orthographic projection of the auxiliary cutout area Q2 on the substrate. Thus, by setting the number of auxiliary cutout areas Q2 in the limiting part 16, the thickness gradient of the first color resist unit 141 can be achieved, thereby reducing the thickness difference of the first color resist unit 141 between the main display area A1 and the edge display area A2, and thus improving the display effect.

[0103] For another method of adjusting the auxiliary cutout area Q2, please refer to Figure 10. Figure 10 is a top view of a partial structure of another display panel provided in this application. The number of auxiliary cutout areas Q2 in each limiting part 16 is the same, and the central angle of each auxiliary cutout area Q2 in the same limiting part 16 is the same. The central angle of the auxiliary cutout area Q2 in the limiting part 16 is negatively correlated with the thickness of the main body of the corresponding first color resist unit 141.

[0104] In this embodiment of the application, by setting the central angle of the auxiliary hollow area Q2 in the limiting part 16, the thickness gradient of the first color resist unit 141 can be realized, thereby reducing the thickness difference of the first color resist unit 141 between the main display area A1 and the edge display area A2, and thus improving the display effect.

[0105] Optionally, referring to Figures 9 and 10, in the same limiting part 16, each auxiliary cutout area Q2 is connected to the main cutout area Q1, which reduces the manufacturing difficulty of the limiting part 16. Furthermore, the orthographic projection of the auxiliary cutout area Q2 onto the substrate can be fan-shaped. The orthographic projection of the auxiliary cutout area Q2 onto the substrate can also include other shapes, such as rectangles, triangles, or other irregular shapes.

[0106] In the third case, please refer to Figure 11. Figure 11 is a top view of a portion of the structure in another display panel provided in this application. Among the multiple limiting parts 16, some limiting parts 16 have only a main hollow area Q1, while other limiting parts 16 have a main hollow area Q1 and an auxiliary hollow area Q2.

[0107] The limiting part 161, which has both a main cutout area Q1 and an auxiliary cutout area Q2, is closer to the main display area A1 than the limiting part 161, which only has a main cutout area Q1.

[0108] For example, the plurality of limiting portions 16 may include a first limiting portion 161, a second limiting portion 162, and a third limiting portion 163. The first limiting portion 161 is located on the side of the second limiting portion 162 closer to the main display area A1, and the third limiting portion 163 is located on the side of the second limiting portion 162 away from the main display area A1. The third limiting portion 163 has only a main cutout area Q1, while the second limiting portion 162 and the first limiting portion 161 both have a main cutout area Q1 and a plurality of auxiliary cutout areas Q2. Furthermore, the areas of the third limiting portion 163, the second limiting portion 162, and the first limiting portion 161 on the substrate decrease sequentially, and the thickness of the corresponding first color resist unit 141 decreases sequentially. This reduces the difference in thickness between the color resist units 14 in the main display area A1 and the edge display area A2, thereby improving the display effect.

[0109] The material of the limiting part 16 is described below:

[0110] In this application, the limiting part 16 can be a separately manufactured structure, or the limiting part 16 can be a co-layer structure with other structures in the display panel to simplify the process.

[0111] Optionally, referring to Figure 6, the color resist layer 14 includes a first color resist unit 141, a second color resist unit 142, and a third color resist unit 143. One of the second color resist unit 142 and the third color resist unit 143 includes a red color resist material, and the other includes a blue color resist material.

[0112] The limiting part 16 is disposed in the same layer as the second color resist unit 142 and is made of the same material, and / or the limiting part 16 is disposed in the same layer as the third color resist unit 143 and is made of the same material. This includes the following three cases:

[0113] 1) The limiting part 16 and the second color resist unit 142 are of the same layer structure, that is, the limiting part 16 and the second color resist unit 142 use the same color resist material, for example, one of blue color resist material or red color resist material.

[0114] If the limiting part 16 and the second color resist unit 142 are formed before the first color resist unit 141, then the limiting part 16 can act as a barrier during the manufacturing process of the first color resist unit 141. Alternatively, the limiting part 16 and the second color resist unit 142 can be formed before the third color resist unit 143, in which case a limiting part 16 corresponding to the third color resist unit 143 can be provided, and it can act as a barrier during the manufacturing process of the third color resist unit 143.

[0115] 2) The limiting part 16 and the third color resist unit 143 are of the same layer structure, that is, the limiting part 16 and the third color resist unit 143 use the same color resist material, for example, another one of blue color resist material or red color resist material.

[0116] If the limiting part 16 and the third color resist unit 143 are formed before the first color resist unit 141, then the limiting part 16 can act as a barrier during the manufacturing process of the first color resist unit 141. Alternatively, the limiting part 16 and the third color resist unit 143 can be formed before the second color resist unit 142, then a limiting part 16 corresponding to the second color resist unit 142 can be provided, and it can act as a barrier during the manufacturing process of the second color resist unit 142.

[0117] 3) The limiting part 16, the second color resist unit 142, and the third color resist unit 143 are all of the same layer structure. The limiting part 16 includes red color resist material and blue color resist material.

[0118] The limiting part 16 has a multi-layer structure. Please refer to Figures 6 and 12. Figure 12 is a schematic diagram of another cross-sectional structure of the display panel provided in Figure 6 (Figure 12 may be a schematic diagram of another cross-sectional structure of the display panel provided in Figure 6 at C3-C3). The limiting part 16 includes a first sub-layer L1 and a second sub-layer L2 stacked along the direction away from the substrate 11.

[0119] When the second color resist unit 142 is formed before the third color resist unit 143, the first sublayer L1 and the second color resist unit 142 are in the same layer, and the second sublayer L2 and the third color resist unit 143 are in the same layer. When the second color resist unit 142 is formed after the third color resist unit 143, the first sublayer L1 and the third color resist unit 143 are in the same layer, and the second sublayer L2 and the second color resist unit 142 are in the same layer. Furthermore, since the limiting part 16, the second color resist unit 142, and the third color resist unit 143 are all formed before the first color resist unit 141, the limiting part 16 formed can play a blocking role during the manufacturing process of the first color resist unit 141.

[0120] In addition, in this case, the first sub-layer L1 may only have a main cutout area Q1, and the second sub-layer L2 may have a main cutout area Q1 and multiple auxiliary cutout areas. The embodiments of this application can also refer to the embodiments in Figures 6, 9, and 10, where the main cutout area Q1 and the auxiliary cutout area Q2 in the first sub-layer L1 and the second sub-layer L2 are adjusted respectively to achieve a gradient change in the thickness of the first color resist unit 141.

[0121] In a second exemplary embodiment, the thickness of the first color resist unit in the edge display area can be adjusted by setting a dam.

[0122] Please refer to Figure 13. Figure 13 is a top view of a partial structure of another display panel provided in this application. The display panel also includes: multiple dams M located on the side of the black matrix layer 15 away from the encapsulation layer 13. The dams M are all located within the edge display area A2, and the dams M are distributed around the main display area A1. The multiple dams M are nested in sequence.

[0123] In this application, multiple dams M can be formed before the first color resist unit 141. This prevents material from flowing out of the first color resist unit 141 in the edge display area A2 during its formation, thereby compensating for the thickness of the first color resist unit 141 in the edge display area A2. The dams M shown in Figure 13 are wavy to allow them to avoid the location of the color resist layer 14. The dams M can also have other shapes, which are not limited in this embodiment.

[0124] The orthographic projection of the dam M on the substrate does not coincide with the orthographic projection of the first color resist unit 141 on the substrate, and the distance D2 between two adjacent dams M is negatively correlated with the thickness of the main body of the first color resist unit 141 distributed between the two adjacent dams M.

[0125] The larger the distance D2 between two adjacent dams M, the weaker the blocking effect on the material of the first color resist unit 141 distributed between the two adjacent dams M. Therefore, this application can reduce the thickness difference of the first color resist unit 141 between the main display area A1 and the edge display area A2 by setting a gradient change in the distance D2 between two adjacent dams M. Furthermore, the thickness of the color resist unit 141 closer to the main display area A1 is smaller, which can also avoid the appearance of a sudden darkening boundary, thereby improving the display effect.

[0126] Optionally, the number of dams M is three or more. The distance D2 between two adjacent dams M increases sequentially in the direction toward the main display area A1.

[0127] For example, the multiple dams M may include a first dam M1, a second dam M2, and a third dam M3. The first dam M1 is located on the side of the second dam M2 closer to the main display area A1, and the third dam M3 is located on the side of the second dam M2 away from the main display area A1. The second distance D2 between the first dam M1 and the second dam M2 is D21, and the second distance D2 between the second dam M2 and the third dam M3 is D22, where D21 > D22. The thickness of the first color resist unit 141 distributed in this way within the edge display area A2 can achieve a gradient change.

[0128] Optionally, the number of rows of the first color resist units 141 distributed between two adjacent dams M in the plurality of dams M increases sequentially in the direction toward the main display area A1.

[0129] The more rows of first color resist units 141 distributed between two adjacent dams M, the lower the blocking effect on the material of the first color resist units 141 distributed between two adjacent dams M. This can achieve the effect of adjusting the thickness gradient of the first color resist units 141 in the edge display area A2, thereby improving the display effect.

[0130] The following describes the materials used in the cofferdam M:

[0131] In this application, the dam M can be a separately manufactured structure, or the dam M can be a co-layer structure with other structures in the display panel to simplify the process.

[0132] Optionally, referring to Figure 13, the color resist layer 14 includes a first color resist unit 141, a second color resist unit 142, and a third color resist unit 143, wherein one of the second color resist unit 142 and the third color resist unit 143 includes a red color resist material, and the other includes a blue color resist material.

[0133] The dam M is installed in the same layer as the second color blocking unit 142 and is made of the same material, and / or the dam M is installed in the same layer as the third color blocking unit 143 and is made of the same material. This includes the following three cases:

[0134] 1) The dam M and the second color resist unit 142 are of the same layer structure, that is, the dam M and the second color resist unit 142 use the same color resist material, for example, one of blue color resist material or red color resist material.

[0135] If the dam M and the second color blocking unit 142 are formed before the first color blocking unit 141, then the dam M can act as a barrier during the manufacturing process of the first color blocking unit 141. Alternatively, the dam M and the second color blocking unit 142 can be formed before the third color blocking unit 143, in which case a dam M corresponding to the third color blocking unit 143 can be provided, and it can act as a barrier during the manufacturing process of the third color blocking unit 143.

[0136] 2) The dam M and the third color resist unit 143 are of the same layer structure, that is, the dam M and the third color resist unit 143 use the same color resist material, for example, another one of blue color resist material or red color resist material.

[0137] If the dam M and the third color blocking unit 143 are formed before the first color blocking unit 141, then the dam M can act as a barrier during the manufacturing process of the first color blocking unit 141. Alternatively, the dam M and the third color blocking unit 143 can be formed before the second color blocking unit 142, in which case a dam M corresponding to the second color blocking unit 142 can be provided, and it can act as a barrier during the manufacturing process of the second color blocking unit 142.

[0138] 3) The dam M, the second color resist unit 142, and the third color resist unit 143 are all of the same layer structure, that is, the dam M includes red color resist material and blue color resist material.

[0139] The dam M has a multi-layer structure. Please refer to Figures 13 and 14. Figure 14 is a cross-sectional structural diagram of the display panel provided in Figure 13 (Figure 14 may be a cross-sectional structural diagram of the display panel provided in Figure 13 at C4-C4). The dam M includes a first sub-dam layer L3 and a second sub-dam layer L4 stacked along the direction away from the substrate 11.

[0140] When the second color-blocking unit 142 is formed before the third color-blocking unit 143, the first sub-dam layer L3 and the second color-blocking unit 142 are of the same layer structure, and the second sub-dam layer L4 and the third color-blocking unit 143 are of the same layer structure. When the second color-blocking unit 142 is formed after the third color-blocking unit 143, the first sub-dam layer L3 and the third color-blocking unit 143 are of the same layer structure, and the second sub-dam layer L4 and the second color-blocking unit 142 are of the same layer structure. Furthermore, since the dam M, the second color-blocking unit 142, and the third color-blocking unit 143 are all formed before the first color-blocking unit 141, the formed dam M can play a blocking role during the manufacturing process of the first color-blocking unit 141.

[0141] In a third exemplary embodiment, the thickness of the first color resist unit in the edge display area can be adjusted by setting a recessed structure.

[0142] Please refer to Figure 15, which is a schematic diagram of a partial structure of another display panel provided in this application. The display panel further includes an organic cover layer 17 located between the encapsulation layer 13 and the black matrix layer 15. The side of the organic cover layer 17 away from the substrate 11 has a plurality of recessed structures 171, which correspond to a plurality of first openings distributed in the edge display area A2 and to a plurality of first color resist units 141 distributed in the edge display area A2.

[0143] The recessed structure 171 is connected to the corresponding first opening K1, and the orthographic projection of the recessed structure 171 on the substrate 11 overlaps with the orthographic projection of the corresponding first color resist unit 141 on the substrate 11. Therefore, the recessed structure 171 can accommodate more material from the first color resist unit 141, thereby compensating for the thickness of the first color resist unit 141. Furthermore, the orthographic projection of the recessed structure 171 on the substrate 11 can overlap with the orthographic projection of the corresponding first color resist unit 141 on the substrate 11, which facilitates the recessed structure 171 accommodating the material of the first color resist unit 141.

[0144] The depth H1 of the recessed structure 171 in the direction perpendicular to the substrate 11 is positively correlated with the thickness of the main body of the corresponding first color resist unit 141.

[0145] For example, for two different first color resist units 141 distributed in the edge display area A2, the depth H1 of the recessed structure 171 corresponding to the first color resist unit 141 closer to the main display area A1 is H11, and the depth H1 of the recessed structure 171 corresponding to the first color resist unit 141 further away from the main display area A1 is H12, where H12 > H11.

[0146] This embodiment of the application, by setting a depth H1 gradient change in the recessed structure 171, can reduce the difference in thickness of the color resist layer 14 between the main display area A1 and the edge display area A2, thereby improving the display effect. This embodiment of the application can also combine a limiting part or a dam to adjust the thickness of the color resist layer 14 in the edge display area A2, which can also improve the display effect.

[0147] In addition, embodiments of this application can use a halftone mask to manufacture recessed structures 171 with different depths H1. The manufacturing process of the recessed structure 171 can include: forming a solid organic material layer with a flat surface away from the substrate 11, and then exposing and developing the organic material layer through a halftone mask. By adjusting the transmittance of each region of the halftone mask, the exposure degree of the corresponding region of the organic material layer can be controlled, thereby forming recessed structures 171 with different depths H1.

[0148] Optionally, the display panel further includes a buffer layer and a touch electrode layer. Please refer to Figure 16, which is a schematic diagram of a partial structure of another display panel provided in this application. The buffer layer 182 is located on the side of the encapsulation layer 13 away from the substrate 11, the touch electrode layer 181 is located on the side of the buffer layer 182 away from the substrate 11, and the organic cover layer 15 is located on the side of the touch electrode layer 181 away from the substrate 11.

[0149] In this application, the touch electrode layer 181 may include a self-capacitive capacitor structure or a mutual capacitive capacitor structure. When a user's finger contacts the touch electrode, the capacitance value in the self-capacitive capacitor structure or the mutual capacitive capacitor structure changes to determine the location of the touch, thereby enabling the display panel to perform touch functionality. Furthermore, the orthographic projection of the touch electrode layer 181 onto the substrate 11 can be located outside the orthographic projection of the first opening K1 of the black matrix layer 15 onto the substrate 11, thereby preventing the touch electrode layer 181 from blocking the light emitted by the light-emitting unit 12 and affecting the display effect of the display panel. The touch buffer layer 182 can be used to improve the adhesion between the encapsulation layer 13 and the touch electrode layer 181. The organic capping layer 15 covers the touch electrode 181, thus the organic capping layer 15 can also be used to protect the touch electrode layer 181.

[0150] Optionally, referring to Figure 15, for the recessed structure 171 with the maximum depth H1 in the direction perpendicular to the substrate 11, if the depth H1 of the recessed structure 171 is less than or equal to the thickness of the organic capping layer 17, then the recessed structure 171 can penetrate the organic capping layer 17. Since the orthogonal projection of the touch electrode layer 181 on the substrate 11 is outside the orthogonal projection of the first color resist unit 141 on the substrate 11, even when the recessed structure 171 penetrates the organic capping layer 17, the protective effect of the organic capping layer 17 on the touch electrode layer 181 can be ensured.

[0151] In a fourth exemplary embodiment, the thickness of the first color resist unit in the edge display area can be adjusted by setting a light-transmitting structure.

[0152] Please refer to Figure 17, which is a schematic diagram of a partial structure in another display panel provided in this application. The display panel also includes: a plurality of light-transmitting structures 19, which correspond to a plurality of first openings K1 distributed in the edge display area A2, and at least a portion of the light-transmitting structures 19 are located in the corresponding first openings K1.

[0153] The light-transmitting structure 19 can fill a portion of the first opening K1, thereby reducing the material of the first color resist unit 141 in the first opening K1, and thus the light-transmitting structure 19 can also adjust the thickness of the first color resist unit 141. The light-transmitting structure 19 may include a light-transmitting material, which can prevent the light-transmitting structure 19 from causing light brightness loss and affecting light output efficiency.

[0154] The thickness H2 of the plurality of light-transmitting structures 19 in the direction perpendicular to the substrate 11 is negatively correlated with the thickness of the main body of the corresponding first color resist unit 141.

[0155] For example, for two different first color resist units 141 distributed in the edge display area A2, the thickness H2 of the light-transmitting structure 19 corresponding to the first color resist unit 141 closer to the main display area A1 is H21, and the thickness H2 of the light-transmitting structure 19 corresponding to the first color resist unit 141 further away from the main display area A1 is H22, where H21 > H22.

[0156] This embodiment of the application, by setting a thickness gradient H2 of the light-transmitting structure 19, can reduce the difference in thickness of the color resist layer 14 between the main display area A1 and the edge display area A2, thereby improving the display effect. This embodiment of the application can also combine a limiting part or a dam to adjust the thickness of the color resist unit 14 in the edge display area A2, which can also improve the display effect.

[0157] In addition, in this embodiment of the application, a light-transmitting structure 19 with different thicknesses H2 can be manufactured by halftone mask. The manufacturing process of the light-transmitting structure 19 may include: forming a whole layer of light-transmitting material, and then performing a patterning process on the light-transmitting material layer by halftone mask. By adjusting the light transmittance of each area of ​​the halftone mask, the exposure degree of the corresponding area of ​​the light-transmitting material layer can be controlled, thereby forming a light-transmitting structure 19 with different thicknesses H2.

[0158] Optionally, the display panel further includes an organic cover layer. Referring to Figure 18, which is a schematic diagram of a portion of the structure of another display panel provided in this application, the display panel further includes an organic cover layer 17 located between the encapsulation layer 13 and the black matrix layer 15. Multiple light-transmitting structures 19 are in contact with the side of the organic cover layer 17 facing away from the substrate 11. The refractive index of the light-transmitting structures 19 is higher than that of the organic cover layer 17.

[0159] When the light emitted by the light-emitting unit 12 reaches the junction of the encapsulation layer 13 and the light-transmitting structure 19, since the refractive index of the light-transmitting structure 19 is higher than that of the organic cover layer 17, the exit angle of the light is smaller than the incident angle. Thus, the light-transmitting structure 19 can achieve a light-focusing effect, which helps to improve the brightness of the display panel.

[0160] The above embodiment takes the first color resist unit as an example. In this application, the second and third color resist units in the edge display area can also be provided with corresponding limiting parts, dams, recessed structures or light-transmitting structures. For specific structures and setting methods, please refer to the above embodiment. The embodiments of this application will not be described in detail here.

[0161] In the above embodiments, the multiple color resist units are circular in shape, but the color resist units provided in this application embodiment can also be other shapes, such as rectangles, rhombuses, etc. Correspondingly, the shapes of the limiting part, the surrounding dam, the recessed structure, or the light-transmitting structure can be adjusted according to the shape of the color resist unit.

[0162] In summary, this application provides a display panel including a substrate, light-emitting units, an encapsulation layer, a black matrix layer, and a color resist layer. By setting the thickness of the first color resist units distributed in the edge display area to be greater than or equal to the thickness of the first color resist units distributed in the main display area, the problem of edge brightening caused by the color resist units in the edge display area being too thin can be avoided. Furthermore, this application also adjusts the thickness of the first color resist units distributed in the edge display area. Compared to the first color resist units farther from the main display area, the thickness of the first color resist units closer to the main display area is smaller, thereby reducing the thickness difference of the first color resist units in the main display area and the edge display area, thus reducing the brightness difference at the boundary between the main display area and the edge display area, and thereby improving the display effect.

[0163] On the other hand, this application also provides a display device, which includes a power supply component and the display panel provided in the above embodiments. The power supply component can supply power to the display panel. The display device can be various devices that include display functions; for example, the display device can be an OLED display device.

[0164] Since the display device includes the display panel provided in the above embodiments, the display device can also have a similar effect, that is, it can improve the display effect of the display device.

[0165] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0166] In this application, the term "at least one of A and B" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, "at least one of A and B" can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone. Similarly, "at least one of A, B, and C" indicates that seven relationships can exist, representing seven cases: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A, B, and C exist simultaneously.

[0167] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0168] In this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0169] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized by, The display panel has a main display area and an edge display area, and the edge display area is distributed at least around the main display area; the display panel comprises a substrate, a light-emitting unit, an encapsulation layer, a black matrix layer and a color resistance layer; The light-emitting unit is located on one side of the substrate; The encapsulation layer is located on the side of the light-emitting unit away from the substrate; The black matrix layer and the color resistance layer are both located on the side of the encapsulation layer away from the substrate, the black matrix layer has a plurality of first openings, the color resistance layer comprises a plurality of first color resistance units with the same color, the first color resistance unit comprises a main body part, and the orthographic projection of the main body part of the first color resistance unit on the substrate is located within the orthographic projection of the corresponding first opening on the substrate; The thickness of the main body part of the first color resistance unit distributed in the edge display area is greater than or equal to the thickness of the main body part of the first color resistance unit distributed in the main display area; for two different first color resistance units distributed in the edge display area, the thickness of the main body part of the first color resistance unit closer to the main display area is less than the thickness of the main body part of the first color resistance unit farther away from the main display area.

2. The display panel of claim 1, wherein, For a row of first color resistance units distributed in the edge display area and arranged towards the main display area, the thickness of the main body part of each first color resistance unit in the row of first color resistance units decreases in turn in the direction towards the main display area.

3. The display panel of claim 1 or 2, wherein, The display panel further comprises a plurality of limiting parts located on the side of the black matrix layer away from the encapsulation layer, the plurality of limiting parts correspond to a plurality of first color resistance units distributed in the edge display area, the limiting part has a main hollow area, and the orthographic projection of the main hollow area of the limiting part on the substrate covers the orthographic projection of the corresponding first color resistance unit on the substrate; The area of the orthographic projection of the limiting part on the substrate is positively correlated with the thickness of the main body part of the corresponding first color resistance unit.

4. The display panel of claim 3, wherein, The area of the orthographic projection of the main hollow area of the limiting part on the substrate is negatively correlated with the thickness of the main body part of the corresponding first color resistance unit.

5. The display panel of claim 3, wherein, The limiting part further has a plurality of auxiliary hollow areas; The sum of the areas of the orthographic projections of the plurality of auxiliary hollow areas in the limiting part on the substrate is negatively correlated with the thickness of the main body part of the corresponding first color resistance unit.

6. The display panel of claim 5, wherein, In the same limiting part, the plurality of auxiliary hollow areas are distributed around the main hollow area; The central angles of each auxiliary hollow area in the same limiting part are the same, and the central angles of different auxiliary hollow areas in different limiting parts are also the same, and the number of auxiliary hollow areas in the limiting part is negatively correlated with the thickness of the main body part of the corresponding first color resistance unit; Alternatively, the number of auxiliary hollow areas in each limiting part is the same, and the central angles of each auxiliary hollow area in the same limiting part are the same, and the central angle of the auxiliary hollow area in the limiting part is negatively correlated with the thickness of the main body part of the corresponding first color resistance unit.

7. The display panel of claim 6, wherein, In the same limiting part, each auxiliary hollow area is in communication with the main hollow area.

8. The display panel of any of claims 4 to 7, wherein, In the plurality of limiting portions, a part of the limiting portions only has the main hollow area, and another part of the limiting portions has the main hollow area and the auxiliary hollow area. The limiting portion with the main hollow area and the auxiliary hollow area is closer to the main display area than the limiting portion with only the main hollow area.

9. The display panel of any of claims 4 to 7, wherein, The color resist layer further includes a plurality of second color resist units of the same color and a plurality of third color resist units of the same color. The limiting portion is of the same layer and the same material as the second color resist unit, and / or the limiting portion is of the same layer and the same material as the third color resist unit.

10. The display panel of claim 1 or 2, wherein, The display panel further includes a plurality of dams on a side of the black matrix layer away from the encapsulation layer, the dams are located in the edge display area, and the dams are distributed around the main display area, and the plurality of dams are arranged in sequence. The projection of the dam on the substrate does not overlap the projection of the first color resist unit on the substrate, and the distance between two adjacent dams is negatively correlated with the thickness of the main body of the first color resist unit distributed between the two adjacent dams.

11. The display panel of claim 10, wherein, The number of the dams is three or more; the distance between two adjacent dams in the plurality of dams increases in sequence in a direction towards the main display area.

12. The display panel of claim 11, wherein, The number of rows of the first color resist units distributed between two adjacent dams in the plurality of dams increases in sequence in a direction towards the main display area.

13. The display panel of claim 11 or 12, wherein, The color resist layer further includes a plurality of second color resist units of the same color and a plurality of third color resist units of the same color, the dam and the second color resist unit are of a same layer structure, and / or the dam and the third color resist unit are of a same layer structure.

14. The display panel of claim 1 or 2, wherein, The display panel further includes an organic cover layer between the encapsulation layer and the black matrix layer; one side of the organic cover layer away from the substrate has a plurality of recess structures, the plurality of recess structures correspond to a plurality of first openings distributed in the edge display area, and correspond to a plurality of first color resist units distributed in the edge display area; the recess structure communicates with the corresponding first opening, and the projection of the recess structure on the substrate overlaps the projection of the corresponding first color resist unit on the substrate. The depth of the recess structure in the direction perpendicular to the substrate is positively correlated with the thickness of the main body of the corresponding first color resist unit.

15. The display panel of claim 14, wherein, For the recess structure with the largest depth in the direction perpendicular to the substrate, the depth of the recess structure is less than or equal to the thickness of the organic cover layer.

16. The display panel of claim 1 or 2, wherein, The display panel further includes a plurality of light-transmitting structures, the plurality of light-transmitting structures correspond to a plurality of first openings distributed in the edge display area, and at least part of the light-transmitting structures are located in the corresponding first openings. The thickness of the plurality of light-transmitting structures in the direction perpendicular to the substrate is negatively correlated with the thickness of the main body of the corresponding first color resist unit.

17. The display panel of claim 16, wherein, The display panel further comprises an organic covering layer between the encapsulation layer and the black matrix layer, and each of the plurality of light-transmitting structures is in contact with one side of the organic covering layer away from the substrate. The refractive index of the light-transmitting structure is higher than the refractive index of the organic covering layer.

18. The display panel of any of claims 1-2, 4-7, 11-12, 15, 17, wherein, The first color resist unit comprises a green color resist material.

19. The display panel of any of claims 1-2, 4-7, 11-12, 15, 17, wherein, The display panel further comprises a buffer layer on a side of the encapsulation layer away from the substrate, a touch electrode layer on a side of the buffer layer away from the substrate, and an organic covering layer on a side of the touch electrode layer away from the substrate. The black matrix layer and the color resist layer are both on a side of the organic covering layer away from the substrate.

20. A display device comprising: The display device comprises a power supply assembly and the display panel of any one of claims 1 to 19.

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