Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises a display area, the display area comprising a first sub-display area and a second sub-display area, the second sub-display area having a light-transmitting area; the display area comprising light-emitting devices and color resistors, the color resistors being located on a side of the light-emitting devices facing a light-out surface of the display panel; wherein the thickness of at least part of the color resistors in the second sub-display area is greater than the thickness of the color resistors in the first sub-display area. The technical solution of the present application reduces the reflectivity difference between the second sub-display area and the first sub-display area, ensures the display uniformity of the display panel, and avoids the problem of the second sub-display area being obviously visible due to the large reflectivity difference between the second sub-display area and the first sub-display area.

Description

[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] With the continuous development of display technology, full-screen displays have become the mainstream display design, characterized by an ultra-high screen-to-body ratio. To achieve even higher screen-to-body ratios, CUP (camera under panel) technology is attracting increasing attention from manufacturers. CUP technology places optical components such as cameras on the back of the display area; the area where these cameras and optical sensors are located can be called the CUP area. Clearly, the CUP area can both display images and transmit the light needed by the camera. Improving the light transmittance of the CUP area while ensuring display uniformity between the CUP and conventional displays is a problem that urgently needs to be solved.

[0003] [Application Content]

[0004] In view of this, embodiments of this application provide a display panel and a display device to solve the above problems.

[0005] On one hand, this application provides a display panel, comprising: a display area, the display area including a first sub-display area and a second sub-display area, the second sub-display area having a light-transmitting area; the display area including a light-emitting device layer and a color resist layer, the light-emitting device layer including a plurality of light-emitting devices and the color resist layer including a plurality of color resists, the color resists being located on the side of the light-emitting devices facing the light-emitting surface of the display panel; wherein, at least a portion of the color resists in the second sub-display area has a thickness greater than the thickness of the color resists in the first sub-display area.

[0006] On the other hand, this application provides a display device including a display panel as provided in the first aspect.

[0007] In this embodiment, by controlling the thickness of at least a portion of the color resist in the second sub-display area to be greater than the thickness of the color resist in the first sub-display area, the transmittance of the color resist in the second sub-display area to external light can be reduced. This reduces the amount of light that can be reflected in the second sub-display area, thereby achieving a lower reflectance of the sub-pixel areas in the second sub-display area to external light compared to the sub-pixel areas in the first sub-display area. Therefore, the technical solution of this application reduces the reflectance difference between the second and first sub-display areas, ensuring the display uniformity of the display panel and avoiding the problem of the second sub-display area being clearly visible due to a large reflectance difference between the two areas. [Attached Image Description]

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in 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.

[0009] Figure 1 A schematic diagram of a display panel provided in an embodiment of this application;

[0010] Figure 2 A schematic diagram of a display panel provided in an embodiment of this application;

[0011] Figure 3 for Figure 1 and Figure 2 A schematic cross-sectional view along the MM' direction;

[0012] Figure 4 for Figure 1 and Figure 2 A partial schematic diagram of the CC region within the dashed box;

[0013] Figure 5 for Figure 4 A schematic cross-sectional view along the NN' direction;

[0014] Figure 6 for Figure 4 A schematic cross-sectional view along the NN' direction;

[0015] Figure 7 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application;

[0016] Figure 8 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application;

[0017] Figure 9 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application;

[0018] Figure 10 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application;

[0019] Figure 11 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application;

[0020] Figure 12 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0021] Figure 13 This is a partial cross-sectional schematic diagram of the second region in the display panel provided in the embodiments of this application;

[0022] Figure 14 This is a partial cross-sectional schematic diagram of the second region in the display panel provided in the embodiments of this application;

[0023] Figure 15 This is a schematic diagram of the structure of the color resist and auxiliary layer in the display panel provided in the embodiments of this application;

[0024] Figure 16 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0025] Figure 17 This is a projection diagram of a touch layer in a display panel provided in an embodiment of this application;

[0026] Figure 18 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0027] Figure 19 This is a partial cross-sectional schematic diagram of the second sub-display area in the display panel provided in the embodiments of this application;

[0028] Figure 20 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0029] Figure 21 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0030] Figure 22 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0031] Figure 23 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0032] Figure 24 This is a schematic diagram of a display device provided in an embodiment of this application.

Detailed Implementation Methods

[0033] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that the term "and / or" used in this article 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, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "about", "generally", "largely" used in the claims and embodiments of this application refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than a precise value.

[0038] It should be understood that although the terms first, second, third, etc., may be used to describe directions in the embodiments of this application, these directions should not be limited to these terms. These terms are only used to distinguish directions from each other. For example, without departing from the scope of the embodiments of this application, a first direction may also be referred to as a second direction, and similarly, a second direction may also be referred to as a first direction.

[0039] Through meticulous and in-depth research, the applicant in this case has provided a solution to the problems existing in the prior art.

[0040] Figure 1 This is a schematic diagram of a display panel provided in an embodiment of this application. Figure 2 This is a schematic diagram of a display panel provided in an embodiment of this application.

[0041] This application provides a display panel, such as... Figure 1 and Figure 2 As shown, the display panel 001 includes a display area AA and a non-display area NA. The non-display area NA surrounds the display area AA. The display area AA is the main area for emitting light and displaying information. The non-display area NA is mainly used to set up the packaging structure, peripheral circuits, peripheral signal lines, etc.

[0042] Display area AA includes a first sub-display area A1 and a second sub-display area A2. The light transmittance of the first sub-display area A1 is less than that of the second sub-display area A2. The first sub-display area A1 and the second sub-display area A2 are different regions within display area AA, and the second sub-display area A2 has a higher transmittance to ambient light than the first sub-display area A1. Furthermore, the first sub-display area A1 can at least partially surround the second sub-display area A2.

[0043] The second sub-display area A2 has higher transmittance to ambient light, so the area where the second sub-display area A2 is located can be used to set up optical functional components. For example, a device with an integrated light sensor, such as a camera or a fingerprint recognition structure, can be set below the second sub-display area A2. In addition to realizing the function of emitting light and displaying, the second sub-display area A2 can also realize the function of optical signal transmission, such as taking pictures or biometric recognition, at least one of these functions.

[0044] like Figure 1 As shown, the first sub-display area A1 can completely surround the second sub-display area A2; as Figure 2 As shown, the first sub-display area A1 can also partially surround the second sub-display area A2. Of course, the second sub-display area A2 can be any shape, such as a circle, ellipse, or rectangle.

[0045] Figure 3 for Figure 1 and Figure 2 A schematic cross-sectional view along the MM' direction.

[0046] The display area AA of the display panel 001 includes a substrate and a circuit array layer disposed on one side of the substrate. Figure 3 (Not shown in the image), light-emitting device layer 01, and color resist layer 02. The circuit array layer includes multiple pixel circuits (…). Figure 3 (Not shown, please refer to the following figures) The light-emitting device layer 01 includes multiple light-emitting devices 10, and the pixel circuit provides light-emitting signals to the light-emitting devices 10. The color resist layer 02 includes multiple color resists 20 and a black matrix 20', with the black matrix 20' surrounding the color resists 20. The color resists 20 are located on the side of the light-emitting device 10 facing the light-emitting surface of the display panel 001. The color resists 20 can filter the light emitted by the light-emitting device 10, making the color of the light emitted by the light-emitting device 10 purer when it is emitted from the display panel 001.

[0047] In this embodiment, the thickness of at least a portion of the color resist 20 in the second sub-display area A2 is greater than the thickness of the color resist 20 in the first sub-display area A1. For example... Figure 3 As shown, the color resist 20 in the first sub-display area A1 is labeled as color resist 21, and the color resist 20 in the second sub-display area A2 is labeled as color resist 22. Then, at least part of the color resist 22 has a thickness greater than that of the color resist 21.

[0048] In addition, such as Figure 3 As shown, the first sub-display area A1 includes a first color resist 211, a second color resist 212, and a third color resist 213, and the second sub-display area A2 includes a first color resist 221, a second color resist 222, and a third color resist 223. The first color resist 211 is located on the side of the first color light-emitting device 111 facing the light-emitting surface of the display panel 001; the second color resist 212 is located on the side of the second color light-emitting device 112 facing the light-emitting surface of the display panel 001; and the third color resist 213 is located on the side of the third color light-emitting device 113 facing the light-emitting surface of the display panel 001. Similarly, the first color resist 221 is located on the side of the first color light-emitting device 121 facing the light-emitting surface of the display panel 001; the second color resist 222 is located on the side of the second color light-emitting device 122 facing the light-emitting surface of the display panel 001; and the third color resist 223 is located on the side of the third color light-emitting device 123 facing the light-emitting surface of the display panel 001. In this case, the thickness of the color resist 22 for at least one color in the second sub-display area A2 is greater than the thickness of the color resist 21 for the same color in the first sub-display area A1. For example, as Figure 3 As shown, the thickness of the first color resist 221 is greater than the thickness of the first color resist 211, the thickness of the second color resist 222 is greater than the thickness of the second color resist 212, and the thickness of the third color resist 223 is greater than the thickness of the third color resist 213.

[0049] like Figure 3 As shown, the light-emitting device 10 can specifically be an organic light-emitting diode, including a cathode CE, an anode AE, and a light-emitting material layer EL located between the cathode CE and the anode AE. The magnitude of the electric field between the cathode CE and the anode AE ​​controls the brightness of the light-emitting material layer EL. In order to ensure that each light-emitting device 10 can emit light of different brightness, the anode AE ​​of each light-emitting device 10 can be electrically connected to different pixel circuits, and the cathodes CE of multiple light-emitting devices 10 can be electrically connected and all located in the cathode layer CE0.

[0050] Please refer to Figure 3 The color resist layer 02 includes a black matrix 20' and a color resist 20 surrounded by the black matrix 20'. It can be understood that when preparing the film layer where the black matrix 20' is located, a hollow part is reserved for filling the color resist 20 and the reserved hollow part overlaps with the light-emitting device 10. The color resist 20 is filled in the hollow part to realize that the black matrix 20' surrounds the color resist 20.

[0051] Optionally, a black matrix 20' is provided between the color resists 20. To achieve high light transmittance in the second sub-display area A2, the black matrix 20' in the second sub-display area A2 is usually designed with an opening, so that only a small portion of the black matrix 20' surrounds the color resists 20 is retained in the second sub-display area A2. That is, the second sub-display area A2 has a light-transmitting area A20, which corresponds to the area in the black matrix 20' with the opening design. It should be noted that the light-transmitting area A20 does not overlap with the light-emitting device 10. Specifically, the device integrating a light sensor below the second sub-display area A2 can collect external light or emit light to the outside through the light-transmitting area A20.

[0052] The light-transmitting area A20 in the second sub-display area A2 exposes a larger area of ​​the cathode layer CE0. Since the cathode layer CE0 is usually made of magnesium silver material that can reflect light, this increases the reflectivity of the second sub-display area A2 to external light. To solve this problem, the cathode layer CE0 in the second sub-display area A2 is usually patterned, that is, the cathode layer CE0 in the second sub-display area A2 is hollowed out, and the hollowed-out position of the cathode layer CE0 does not overlap with the light-emitting device 10.

[0053] It should be noted that the cathode layer CE0 in the first sub-display area A1 can be a continuous structure. The area between adjacent color resists 20 in the first sub-display area A1 is completely filled by the black matrix 20'.

[0054] The inventors verified the reflectivity of the second sub-display area A2 to ambient light under two scenarios: with and without patterning of the cathode layer CE0. When the cathode layer CE0 in the second sub-display area A2 was unpatterned, the reflectivity to ambient light was 12%; when the cathode layer CE0 in the second sub-display area A2 was patterned, the reflectivity to ambient light was 6%. It is evident that patterning the cathode layer CE0 in the second sub-display area A2 can indeed reduce the reflectivity to ambient light, but the improvement effect is limited.

[0055] The inventors discovered that, apart from the reflection of external light by the cathode layer CE0, the area in the second sub-display area A2 with a high reflectivity to external light comes from the sub-pixel area, that is, from the area where the color resist 20 is located.

[0056] In this embodiment, by controlling the thickness of at least a portion of the color resist 20 in the second sub-display area A2 to be greater than the thickness of the color resist 20 in the first sub-display area A1, the transmittance of the color resist 20 in the second sub-display area A2 to external light can be reduced. Consequently, the amount of light transmitted through the color resist 20 into the film layer containing the light-emitting device 10 and the pixel circuit in the display panel 001 is reduced. In other words, by setting a larger thickness of the color resist 20 in the second sub-display area A2, the amount of light that can be reflected in the second sub-display area A2 is reduced. This results in the reflectance of the sub-pixel areas in the second sub-display area A2 to external light being less than that in the sub-pixel areas of the first sub-display area A1. Therefore, the technical solution of this application reduces the reflectance difference between the second sub-display area A2 and the first sub-display area A1, ensuring the display uniformity of the display panel 001 and avoiding the problem of the second sub-display area A2 being clearly visible due to the large reflectance difference between the two areas.

[0057] Figure 4 for Figure 1 and Figure 2 A partial schematic diagram of the CC region within the dashed box. Figure 5 for Figure 4 A schematic cross-sectional view along the NN' direction.

[0058] In one embodiment of this application, such as Figure 1 and Figure 2 As shown, the display area AA also includes a third sub-display area A3, which is located between the first sub-display area A1 and the second sub-display area A2. Furthermore, the light transmittance of the third sub-display area A3 is less than that of the second sub-display area A2.

[0059] In one implementation, the third sub-display area A3 may also include a light-transmitting area A20, and the area of ​​the light-transmitting area A20 in the third sub-display area A3 per unit area is smaller than the area of ​​the light-transmitting area A20 in the second sub-display area A2.

[0060] In one implementation, the third sub-display area A3 does not include the light-transmitting area A20.

[0061] Among them, such as Figure 4 and Figure 5 As shown, the third sub-display area A3 is provided with multiple pixel circuits 30 and multiple light-emitting devices 10. Some of the pixel circuits 30 in the third sub-display area A3 can be electrically connected to the light-emitting devices 10 in the second sub-display area A2 through connecting electrodes CL, and the light-emitting devices 10 in the third sub-display area A3 are electrically connected to the pixel circuits 30 in the third sub-display area A3. That is, at least some of the pixel circuits 30 to which the light-emitting devices 10 in the second sub-display area A2 are electrically connected are disposed in the third sub-display area A3 to increase the light transmittance of the second sub-display area A2.

[0062] Furthermore, the pixel circuit 30 in the first sub-display area A1 can be electrically connected to the light-emitting device 10 in the first sub-display area A1, and the light-emitting device 10 in the first sub-display area A1 can be electrically connected to the pixel circuit in the first sub-display area A1.

[0063] Furthermore, the cathode layer CE0 in the third sub-display area A3 can also be a continuous structure. The area between adjacent color resists 20 in the third sub-display area A3 is filled with a black matrix 20'.

[0064] In one technical solution corresponding to this embodiment, such as Figure 5 As shown, the thickness of the color resist 20 in the third sub-display area A3 is greater than the thickness of the color resist 20 in the first sub-display area A1 but less than the thickness of the color resist 20 in the second sub-display area A2. Figure 5 As shown, color resist 20 in the third sub-display area A3 is labeled as color resist 23. Then the thickness of color resist 23 is greater than the thickness of color resist 21 and the thickness of color resist 23 is greater than the thickness of color resist 22.

[0065] In addition, such as Figure 5 As shown, the third sub-display area A3 includes a first color resist 231, a second color resist 232, and a third color resist 233. The thickness of the color resist 22 for any color in the third sub-display area A3 is greater than the thickness of the color resist 21 for the same color in the first sub-display area A1, but less than the thickness of the color resist 21 for the same color in the second sub-display area A2. For example, as... Figure 3 As shown, the thickness of the first color resist 231 is less than the thickness of the first color resist 221 and greater than the thickness of the first color resist 211; the thickness of the second color resist 232 is less than the thickness of the second color resist 222 and greater than the thickness of the second color resist 212; and the thickness of the third color resist 233 is less than the thickness of the third color resist 223 and greater than the thickness of the third color resist 213.

[0066] In this technical solution, the thickness of the color resist 23 in the third sub-display area A3 is greater than the thickness of the color resist 21 in the first sub-display area A1 and less than the thickness of the color resist 22 in the second sub-display area A2. This makes the reflectivity of the sub-pixel areas in the third sub-display area A3 to external light less than that in the first sub-display area A1, and also makes the reflectivity of the sub-pixel areas in the third sub-display area A3 to external light greater than that in the second sub-display area A2. This creates a transition display area between the first sub-display area A1 and the second sub-display area A2. When the display panel 001 emits light, the arrangement of the third sub-display area A3 ensures a natural visual transition between the sub-display areas in display area AA, avoiding abrupt changes in image quality and preventing areas with significantly different reflectivities from being clearly visible to the user.

[0067] Figure 6 for Figure 4 A schematic cross-sectional view along the NN' direction.

[0068] In one technical solution corresponding to this embodiment, the thickness of the color resist 20 in the third sub-display area A3 is the same as the thickness of the color resist 20 in the second sub-display area A2. That is, the thickness of the color resist 23 is the same as the thickness of the color resist 22.

[0069] Furthermore, the thickness of the color resist 20 in the third sub-display area A3 is the same as the thickness of the color resist 20 in the second sub-display area A2. Specifically, the thickness of the color resist 22 for any color in the third sub-display area A3 is equal to the thickness of the color resist 21 for the same color in the second sub-display area A2. For example, as... Figure 6 As shown, the thickness of the first color resist 231 is equal to the thickness of the first color resist 221, the thickness of the second color resist 232 is equal to the thickness of the second color resist 222, and the thickness of the third color resist 233 is equal to the thickness of the third color resist 223.

[0070] In this technical solution, the third sub-display area A3 is equivalent to a redundant area with a film layer design similar to that of the second sub-display area A2. This can prevent light from spilling out of the second sub-display area A2 to the first sub-display area A1, without increasing the difficulty of the process or the cost.

[0071] Figure 7 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application. Figure 8 This is a schematic diagram of the arrangement of color resists in the display panel provided in the embodiments of this application.

[0072] In one embodiment of this application, such as Figure 7 and Figure 8 As shown, among the color resists 20 of the same color disposed in the second sub-display area A2, the thickness of the color resist 20 closer to the first sub-display area A1 is less than the thickness of the color resist 20 farther away from the first sub-display area A1. That is, the thickness of the color resist 20 further away from its edge in the second sub-display area A2 is greater, and the thickness of the color resist 20 closer to its edge is smaller.

[0073] In one technical solution corresponding to this embodiment, such as Figure 7As shown, in the first sub-display area A1, the thickness of the color resists 21 of different colors is the same, that is, the thickness of the first color resist 211, the second color resist 212, and the third color resist 213 is the same. Therefore, in the second sub-display area A2 of this technical solution, N adjacent first color resists 221, N adjacent second color resists 222, and N adjacent third color resists 223 form a unit, and the thickness of the first color resist 221, second color resist 222, and third color resist 223 in each unit is the same; and along the direction from the first sub-display area A1 to the second sub-display area A2, the thickness of the color resist 22 in each unit gradually increases.

[0074] In one technical solution corresponding to this embodiment, such as Figure 8 As shown, in the first sub-display area A1, the thicknesses of the color resists 21 for different colors are different; that is, the thicknesses of the first color resist 211, the second color resist 212, and the third color resist 213 are all different. Therefore, in the second sub-display area A2 of this technical solution, along the direction from the first sub-display area A1 to the second sub-display area A2, the thickness of the first color resist 221 gradually increases, the thickness of the second color resist 222 gradually increases, and the thickness of the third color resist 223 gradually increases.

[0075] In this embodiment, the thickness of the color resist 20 in the second sub-display area A2 can be set to a gradient, that is, the thickness of the color resist 20 in the second sub-display area A2 that is closer to the position of the first sub-display area A1 is also closer to the thickness of the color resist 20 in the first sub-display area A1. This ensures a more natural visual transition between the first sub-display area A1 and the second sub-display area A2.

[0076] In other words, the display difference between the first sub-display area A1 and the second sub-display area A2 due to the difference in reflectivity can be mitigated not only by using a third sub-display area A3 between the first sub-display area A1 and the second sub-display area A2, but also by setting a color resist 20 with a gradually varying thickness inside the second sub-display area A2.

[0077] Figure 9 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application. Figure 10 This is a schematic diagram showing the arrangement of color resists in the display panel provided in the embodiments of this application. Figure 11 This is a schematic diagram of the arrangement of color resists in the display panel provided in the embodiments of this application.

[0078] When the display panel 001 includes a third sub-display area A3, and the thickness of the color resist 23 in the third sub-display area A3 is greater than the thickness of the color resist 21 in the first sub-display area A1 and less than the thickness of the color resist 22 in the second sub-display area A2, the thickness of the color resist 23 in the third sub-display area A3 can be as follows: Figure 9As shown, the thickness of each color resist 23 of the same color is a fixed thickness; it can also be as follows: Figure 10 and Figure 11 As shown, the closer to the first sub-display area A1, the smaller its thickness.

[0079] Among them, the closer the color resist 23 in the third sub-display area A3 is to the first sub-display area A1, the smaller its thickness. The variation law of the thickness of the color resist 23 in the third sub-display area A3 can be consistent with the variation law of the thickness of the color resist 22 in the second sub-display area A2, which will not be elaborated here.

[0080] Figure 12 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application.

[0081] In one embodiment of this application, such as Figure 12 As shown, at least a portion of the color resist 22 in the second sub-display area A2 is flush with the upper surface of the color resist 21 in the first sub-display area A1. That is, at least a portion of the surface of the color resist 22 in the second sub-display area A2 facing the light-emitting surface of the display panel 001 is flush with the surface of the color resist 21 in the first sub-display area A1 facing the light-emitting surface of the display panel 001.

[0082] In this embodiment, the upper surface of the color resist 22 of at least one color in the second sub-display area A2 is flush with the upper surface of the color resist 21 of the same color in the first sub-display area A1. For example, as Figure 12 As shown, the upper surface of the first color resist 221 is flush with the upper surface of the first color resist 211, the upper surface of the second color resist 222 is flush with the upper surface of the second color resist 212, and the upper surface of the third color resist 223 is flush with the upper surface of the third color resist 213.

[0083] An insulating layer 04, which serves a protective function, is typically disposed above the color resist layer 02. By making the upper surface of at least a portion of the color resist 22 in the second sub-display area A2 flush with the upper surface of the color resist 21 in the first sub-display area A1, the insulating layer 04 can be made as uniform in thickness and its upper surface as flat as possible. If the upper surface of the organic layer is not flat, the light emitted by the multiple light-emitting devices 10 in the light-emitting device layer 01 will scatter when it exits from the upper surface of the insulating layer 04, which may result in rainbow patterns in severe cases. This implementation avoids rainbow patterns and color dispersion problems by making the upper surfaces of at least a portion of the color resist in the second sub-display area A2 flush with the upper surfaces of the color resist in the first sub-display area A1, thus making the upper surfaces of the insulating layer 04 in both the second and first sub-display areas as flat as possible.

[0084] Figure 13 This is a partial cross-sectional view of the second region in the display panel provided in the embodiments of this application. Figure 14This is a partial cross-sectional schematic diagram of the second region in the display panel provided in the embodiments of this application.

[0085] In one embodiment of this application, such as Figure 13 and Figure 14 As shown, the upper surfaces of the color resists 22 of the same color in the second sub-display area A2 are flush. That is, the upper surfaces of each first color resist 221 are flush, the upper surfaces of each second color resist 222 are flush, and the upper surfaces of each third color resist 223 are flush.

[0086] In one implementation of this embodiment, such as Figure 13 As shown, in the second sub-display area A2, the upper surfaces of the color resists 22 of the same color are flush, and the upper surfaces of at least two different color resists 22 may not be flush. For example, as Figure 13 As shown, the thickness of each first color resist 221, the thickness of each second color resist 222, and the thickness of each third color resist 223 are all equal; however, the thicknesses of the first color resist 221, the second color resist 222, and the third color resist 223 are all different. This implementation is applicable to situations where at least two color resists 20 have different thicknesses.

[0087] In one implementation of this embodiment, such as Figure 14 As shown, the upper surfaces of all color resists 22 in the second sub-display area A2 are flush, that is, the upper surfaces of the first color resist 221, the second color resist 222, and the third color resist 223 are flush. This implementation is applicable when the thicknesses of the first color resist 221, the second color resist 222, and the third color resist 223 are different or the same.

[0088] An insulating layer 04, which serves a protective function, is typically placed above the color resist layer 02. By aligning the upper surface of the color resist 22 in the second sub-display area A2 with the upper surface of the color resist 21 in the first sub-display area A1, the insulating layer 04 can be made uniform in thickness and have a flat upper surface. If the upper surface of the organic layer is not flat, the light emitted by the multiple light-emitting devices 10 in the light-emitting device layer 01 will scatter when it exits through the upper surface of the insulating layer 04, which can result in rainbow patterns in severe cases. This implementation aligns the upper surfaces of all the color resists in the second sub-display area A2, making the upper surfaces of the insulating layer 04 in both the first display area A1 and the second sub-display area A2 completely flat, thereby more effectively avoiding rainbow patterns and color dispersion problems.

[0089] Furthermore, when the display panel 001 includes a third sub-display area A3, and the thickness of the color resist 23 in the third sub-display area A3 is greater than the thickness of the color resist 21 in the first sub-display area A1, the design of the upper surface of the color resist 23 in the third sub-display area A3 can be the same as the design of the upper surface of the color resist 22 in the second sub-display area A2, and will not be elaborated here.

[0090] In one embodiment of this application, such as Figure 12 As shown, the display area also includes an auxiliary layer 05, which is located between the light-emitting device layer 01 and the color resist layer 02. Specifically, the auxiliary layer 05 can be a transparent insulating layer.

[0091] In the first sub-display area A1, the portion of the auxiliary layer 05 located below the color resist 21 is the first portion 51; in the second sub-display area A2, the portion of the auxiliary layer 05 located below the color resist 22 is the second portion 52. The first portion 51 and the second portion 52 are portions of different areas within the auxiliary layer 05. In this embodiment, the thickness of the first portion 51 is greater than the thickness of at least a portion of the second portion 52.

[0092] In other words, at least some of the surfaces of the second portions 52 facing the color resist 22 are positioned lower than the surfaces of the first portions 51 facing the color resist 21. Therefore, the lower surfaces of the color resist 22 above these second portions 52 can also be lower than the lower surface of the color resist 21, which is beneficial for achieving a thickness of the color resist 22 in the second sub-display area A2 that is greater than the thickness of the color resist 21 in the first display area A1.

[0093] Meanwhile, the solution in this application embodiment can also achieve that the thickness of the color resist 22 is greater than the thickness of the color resist 21 and the upper surface of the color resist 22 is flush with the upper surface of the color resist 21, thereby avoiding the phenomena of color dispersion and rainbow patterns.

[0094] Furthermore, in this embodiment, to ensure that the thickness of the color resist 22 in the second sub-display area A2 is greater than the thickness of the color resist 21 in the first display area A1, it is equivalent to extending the color resist 22 in the second sub-display area A2 towards the light-emitting device layer 01. This increases the thickness of the color resist, bringing it closer to the corresponding light-emitting device 10. This improves the light-gathering capability of the color resist 22 to the light emitted by its corresponding light-emitting device 10, and also prevents crosstalk caused by different colors of light entering between the color resist 22 and its corresponding light-emitting device 10.

[0095] Furthermore, by extending the color resist 22 in the second sub-display area A2 toward the light-emitting device layer 01 to increase the thickness of the color resist 22 in the second sub-display area A2, the increased thickness of the color resist 22 in the second sub-display area A2 will not increase the thickness of the display panel 001, which is beneficial to the realization of a thin and light display panel 001.

[0096] It should be noted that when the thickness of the color resist 22 is increased by extending the color resist 22 toward the auxiliary layer 05, the auxiliary layer 05 and the color resist layer 02 overlap in a direction perpendicular to the surface of the display panel 001.

[0097] For ease of explanation, the following description will assume that the upper surfaces of all color resists 21 in the second sub-display area A2 are flush. Furthermore, when the display panel 001 includes a third sub-display area A3 and the thickness of the color resists 23 in the third sub-display area A3 differs from the thickness of the color resists 21 in the first sub-display area A1, the setting method of the auxiliary layer 05 in the third sub-display area A3 can refer to the setting method of the auxiliary layer 05 in the second sub-display area A2, and will not be elaborated further.

[0098] In one implementation of this embodiment, the auxiliary layer 05 located in the second sub-display area A2 includes multiple slotted structures 50 facing the color resist layer 02, and at least a portion of the color resist 22 located in the second sub-display area A2 is filled within the slotted structures 50. For example... Figure 12 As shown, the portion of the auxiliary layer 05 located below the color resist 22 in the second sub-display area A2 is a slotted structure 50, and the color resist 22 in the second sub-display area A2 is filled within the slotted structure 50.

[0099] This implementation involves creating a slotted structure 50 in the auxiliary layer 05 of the second sub-display area A2 to accommodate the color resist 22. This design allows at least a portion of the color resist 22 in the second sub-display area A2 to be recessed relative to the color resist 21 in the first sub-display area A1, making it easy to adjust the flushness between the upper surface of the color resist 22 in the second sub-display area A2 and the upper surface of the color resist in the first sub-display area A1. Furthermore, the depth of the slotted structure 50 in the auxiliary layer 05 is adjustable, allowing the depth of the slotted structure 50 to be set according to the thickness of the color resist 22 it needs to accommodate. Additionally, this implementation facilitates the realization of a structure where the upper surfaces of color resists 22 of different thicknesses in the second sub-display area A2 are flush.

[0100] One technical solution corresponding to this implementation method is, for example: Figure 12 As shown, in the second sub-display area A2, all slotted structures 50 have the same depth. Therefore, the slotted structures 50 can be formed in the same process using the same mask, saving time and material costs without increasing design complexity.

[0101] One technical solution corresponding to this implementation method is, for example: Figure 14 As shown, in the second sub-display area A2, the auxiliary layer 05 includes multiple slotted structures 50 with different depths. This technical solution is applicable to situations where the thicknesses of different color resists 22 in the second sub-display area A2 are different, and also applicable to situations where the thicknesses of the same color color resists 22 in the second sub-display area A2 are different.

[0102] In one embodiment of this application, such as Figure 14 As shown, the light-emitting device layer 01 includes a plurality of light-emitting devices 10, including a first color light-emitting device 121 and a second color light-emitting device 122. The color resist layer 02 includes a plurality of color resists 20, including a first color color resist 221 and a second color color resist 222. The first color color resist 221 is located on the side of the first color light-emitting device 121 facing the light-emitting surface of the display panel 001, and the second color color resist 222 is located on the side of the second color light-emitting device 122 facing the light-emitting surface of the display panel 001. In this embodiment, the luminous efficiency of the first color light-emitting device 121 is less than that of the second color light-emitting device 122. Therefore, in the second sub-display area A2, the thickness of the first color color resist 221 is less than the thickness of the second color color resist 222.

[0103] In this embodiment, since the luminous efficiency of the first color light-emitting device 121 is less than the luminous brightness of the second color light-emitting device 122, the luminous brightness of the first color light-emitting device 121 is generally less than that of the second color light-emitting device 122. Furthermore, since the thickness of the first color resist 221 is less than the thickness of the second color resist 222, the transmittance of the first color resist 221 is greater than that of the second color resist 222. That is, by placing a first color resist 221 with higher transmittance above the first color light-emitting device 121 (which has lower luminous brightness) and a second color resist 222 with lower transmittance above the second color light-emitting device 122 (which has higher luminous brightness), the light emission brightness of the first and second color sub-pixels can be balanced.

[0104] It should be noted that this embodiment uses different color light-emitting devices in the second sub-display area A2 as examples to illustrate the relationship between the luminous efficiency of the light-emitting devices and their corresponding color resist settings. However, the luminous efficiency of the light-emitting devices and their corresponding color resist settings in this embodiment are not limited to the light-emitting devices and color resists in the second sub-display area A2. The response relationship between the luminous efficiency of the light-emitting devices and the color resist settings in other areas also satisfies the above and below descriptions in this embodiment.

[0105] In one implementation of the embodiments of this application, such as Figure 14 As shown, the depth of the groove structure 50 filled by the first color resist 221 is less than the depth of the groove structure 50 filled by the second color resist 222. That is, the thicker second color resist 222 fills the deeper groove structure 50, while the thinner first color resist 221 fills the shallower groove structure 50.

[0106] This implementation method allows the upper surface of the first color resist 221 to be flush with or completely flush with the upper surface of the second color resist 222, thereby avoiding rainbow patterns and dispersion problems.

[0107] One technical solution corresponding to this embodiment is, as follows: Figure 14 As shown, the light-emitting device layer 01 includes a third color light-emitting device 123 among the multiple light-emitting devices 10, and the color resist layer 02 includes a third color resist 223 among the multiple color resists 20. The third color resist 223 is located on the side of the third color light-emitting device 123 facing the light-emitting surface of the display panel 001. In this technical solution, the luminous efficiency of the third color light-emitting device 123 is greater than that of the first color light-emitting device 121 and less than that of the second color light-emitting device 122. Therefore, in the second sub-display area A2, the thickness of the third color resist 223 is less than the thickness of the second color resist 222 and greater than the thickness of the first color resist 221.

[0108] In this technical solution, the luminous efficiency of the third color light-emitting device 123 is between the luminous efficiency of the first color light-emitting device 121 and the luminous efficiency of the second color light-emitting device 122, and the thickness of the third color resist 223 is between the thickness of the first color resist 221 and the thickness of the second color resist 222, which can balance the light output brightness of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel.

[0109] In one implementation of this technical solution, such as Figure 14 As shown, the depth of the groove structure 50 filled by the third color resist 223 is less than the depth of the groove structure 50 filled by the second color resist 222 but greater than the depth of the first color resist 221. The thickness of the third color resist 223 is between the thickness of the first color resist 221 and the thickness of the second color resist 222, and the depth of the groove structure 50 filled by the third color resist 223 is also between the depth of the groove structure 50 filled by the first color resist 221 and the depth of the groove structure 50 filled by the second color resist 222.

[0110] This implementation method can make the upper surfaces of the first color resist 221, the second color resist 222, and the third color resist 223 nearly flush or completely flush, thereby avoiding rainbow patterns and dispersion problems.

[0111] Figure 15 This is a schematic diagram of the structure of the color resist and auxiliary layer in the display panel provided in the embodiments of this application.

[0112] In one embodiment of this application, such as Figure 15As shown, the auxiliary layer 05 includes a first sub-insulating layer 5a, a second sub-insulating layer 5b, and a third sub-insulating layer 5c. The first sub-insulating layer 5a is located on the side of the second sub-insulating layer 5b that faces away from the color resist layer 02, and the third sub-insulating layer 5c is located on the side of the second sub-insulating layer 5b that faces the light-emitting device layer 01. The first sub-insulating layer 5a includes multiple first cutouts H1, the second sub-insulating layer 5b includes second cutouts H2, and the third sub-insulating layer 5c includes third cutouts H3.

[0113] In this embodiment, the slotted structure 50 filled by the first color resist 221 is the first slotted structure 501, the slotted structure 50 filled by the second color resist 222 is the second slotted structure 502, and the slotted structure 50 filled by the third color resist 223 is the third slotted structure 503. The first slotted structure 501 includes a first hollow portion H1, the second slotted structure 502 includes overlapping first hollow portions H1 and H2 and a third hollow portion H3, and the third slotted structure 503 includes overlapping first hollow portions H1 and H2. Specifically, the first slotted structure 501 includes a first hollow portion H1 penetrating the first insulating layer 5a, and the second slotted structure 502 includes a first hollow portion H1, a second hollow portion H2, and a third hollow portion H3 respectively penetrating the first insulating layer 5a, the second insulating layer 5b, and the third insulating layer 5c.

[0114] In this embodiment, by setting the number of insulating layers penetrated by the hollow portion of the slotted structure 50, slotted structures 50 of various depths can be obtained.

[0115] In this embodiment, when the luminous efficiency of the third color light-emitting device 123 is between that of the first color light-emitting device 121 and the second color light-emitting device 122, and the luminous efficiency of the first color light-emitting device 121 is lower than that of the second color light-emitting device 122, as analyzed in the previous embodiment, the thickness of the first color resist 221, the third color resist 223, and the second color resist 222 should be designed to increase sequentially. Therefore, the depth of the slotted structure 50 filled by the first color resist 221, the third color resist 223, and the second color resist 222 should increase sequentially. Thus, the first color resist 221, the third color resist 223, and the second color resist 222 can be filled respectively in the slotted structure 50 formed by different numbers of hollow portions, thereby achieving a near-flat or completely flat upper surface for the three color resists 22.

[0116] Figure 16 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application.

[0117] In one embodiment of this application, such as Figure 16As shown, the display panel 001 includes a touch layer 07, which is located between the color resist layer 02 and the light-emitting device layer 01. An auxiliary layer 05 is disposed adjacent to the touch layer 07.

[0118] In one corresponding technical solution of this embodiment, the touch layer 07 includes a first touch conductive layer 71, and the auxiliary layer 05 includes a first sub-auxiliary layer 051, which is located between the first touch conductive layer 71 and the color resist layer 02. In this technical solution, at least a portion of the slotted structure 50 penetrates the first sub-auxiliary layer 051.

[0119] For example, such as Figure 16 As shown, the first sub-auxiliary layer 051 is located on the side of the touch layer 07 away from the light-emitting device layer 01, and the first sub-auxiliary layer 051 includes a first hollow portion H1, and the slotted structure 50 includes the first hollow portion H1.

[0120] Furthermore, the touch layer 07 also includes a second touch conductive layer 72, which is located on the side of the first touch conductive layer 71 closest to the light-emitting device layer 01; the auxiliary layer 05 includes a second sub-auxiliary layer 052, which is located between the first touch conductive layer 71 and the second touch conductive layer 72. In this technical solution, at least a portion of the slotted structure 50 penetrates through the first sub-auxiliary layer 051 and the second sub-auxiliary layer 052.

[0121] For example, such as Figure 16 As shown, the slotted structure 50 includes a first slotted structure 501 filled with a first color resist 221, a second slotted structure 502 filled with a second color resist 222, and a third slotted structure 503 filled with a third color resist 223. The depths of the second slotted structure 502 and the third slotted structure 503 are greater than the depth of the first slotted structure 501. In this technical solution, the second sub-auxiliary layer 052 may include a second cutout portion H2. Therefore, the second slotted structure 502 may include a through-hole first cutout portion H1 and a through-hole second cutout portion H2, and the third slotted structure 503 may also include a through-hole first cutout portion H1 and a through-hole second cutout portion H2, while the first slotted structure 501 does not include the second cutout portion H2.

[0122] In this design, one of the first touch conductive layer 71 and the second touch conductive layer 72 may include a touch electrode, and the other may include a bridge electrode, which is used to electrically connect the two touch electrodes. Furthermore, the vias required for connecting the bridge electrode and the touch electrode can be formed simultaneously with the cutouts in the auxiliary layer. For example, if a second sub-auxiliary layer 052 is included between the first touch conductive layer 71 and the second touch conductive layer 72, the vias required for connecting the bridge electrode and the touch electrode can be formed simultaneously with the second cutout H2 in the second sub-auxiliary layer 052.

[0123] Figure 17This is a schematic diagram of the projection of a touch layer in a display panel provided in an embodiment of this application.

[0124] For example, please combine Figure 16 and Figure 17 The first touch conductive layer 71 includes a first touch electrode 7a and a second touch electrode 7b. One of the first touch electrode 7a and the second touch electrode 7b can be a touch driving electrode and the other can be a touch sensing electrode. Then the first touch electrode 7a and the second touch electrode 7b are electrically insulated.

[0125] like Figure 16 and Figure 17 As shown, the first touch electrode 7a and the second touch electrode 7b intersect. To achieve electrical insulation between them, the portion of the first touch electrode 7a located on both sides of the second touch electrode 7b can be electrically connected through a bridge electrode 7c that is on a different layer from the first touch conductive layer 71. That is, the second touch conductive layer 72 includes the bridge electrode 7c, and the intersection of the first touch electrode 7a and the second touch electrode 7b is electrically connected through the bridge electrode 7c.

[0126] In addition, in other technical solutions corresponding to this embodiment, the touch layer 07 may include only one touch conductive layer.

[0127] Optionally, when the touch layer 07 includes only one touch conductive layer, the touch electrodes included therein are in self-capacitance mode.

[0128] Figure 18 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application.

[0129] In addition, such as Figure 18 As shown, the first touch conductive layer 71 includes a bridge electrode 7c, and the second touch conductive layer includes a touch electrode 7a; the bridge electrode electrically connects two adjacent touch electrodes 7a. The first sub-auxiliary layer 051 and / or the second sub-auxiliary layer 052 include a hollow structure H0, and the bridge electrode 7c is disposed within the hollow structure H0.

[0130] Since the first sub-auxiliary layer 051 and the second sub-auxiliary layer 052 need to have hollow portions forming a slotted structure, the hollow structure H0 accommodating the bridge electrode 7c can be formed simultaneously with at least one hollow portion forming the slotted structure. For example, as Figure 18 As shown, the first sub-auxiliary layer 051 includes a hollow structure H0, and the bridge electrode 7c is disposed in the hollow structure H0. The hollow structure H0 that accommodates the bridge electrode 7c can be formed simultaneously with the first hollow portion H1. Furthermore, the via that penetrates the second sub-auxiliary layer 052 when the bridge electrode 7c is electrically connected to the touch electrode 7a can also be formed simultaneously with the second hollow portion H2 in the second sub-auxiliary layer 052.

[0131] Furthermore, the auxiliary layer 05 includes a third sub-auxiliary layer 053, which is located on the side of the touch layer away from the color resist layer 02. In this technical solution, at least part of the slotted structure 50 penetrates the first sub-auxiliary layer 051, the second sub-auxiliary layer 052, and the third sub-auxiliary layer 053.

[0132] For example, such as Figure 16 As shown, the depth of the second slotted structure 502 is greater than the depth of the third slotted structure 503 and greater than the depth of the first slotted structure 501. In this technical solution, the third sub-auxiliary layer 053 may include a third hollow portion H3. The second slotted structure 502 may include a through first hollow portion H1, a second hollow portion H2, and a third hollow portion H3, while neither the third slotted structure 503 nor the first slotted structure 501 includes the third hollow portion H3.

[0133] When the display panel 001 includes a touch layer 07, a corresponding insulating layer is provided to isolate the touch layer 07 from other functional film layers, and / or to isolate different conductive layers in the touch layer 07. These insulating layers are referred to as touch insulating layers. In this embodiment, the touch insulating layer located in the second sub-display area A2 is retained, and these touch insulating layers can be reused as auxiliary layers for creating cutouts to form slotted structures. On the one hand, this simplifies the process of removing the touch insulating layer in the second sub-display area A2; on the other hand, it avoids adding additional auxiliary film layers, thus increasing the thickness of the display panel 001; furthermore, since the display panel 001 includes at least two touch insulating layers, the depth of different slotted structures accommodating different color resists 20 can be achieved by selecting the number of touch insulating layers with cutouts.

[0134] Figure 19 This is a partial cross-sectional schematic diagram of the second sub-display area in the display panel provided in the embodiments of this application.

[0135] In one technical solution corresponding to an embodiment of this application, such as Figure 19 As shown, the second sub-display area A2 also includes a metal pad layer, which is disposed adjacent to the auxiliary layer 05. The metal pad layer comprises multiple metal pads 70' located on the periphery of the slotted structure 50. Figure 19 As shown, the auxiliary layer 05 wraps around the metal pad 70'; in addition, the auxiliary layer 05 may also be located on top of the metal pad layer and cover the metal pad 70'.

[0136] In this embodiment, because a metal pad 70' is provided around the slotted structure 50 of the auxiliary layer 05, in the second sub-display area A2, along the direction perpendicular to the surface of the display panel, the distance between the upper surface of the auxiliary layer 05 away from the substrate and the substrate is greater than the distance between the upper surface of the auxiliary layer and the substrate in the area outside the metal pad 70'. In other words, the metal pad 70' increases the height of the auxiliary layer 05 around the slotted structure 50. Therefore, the metal pad 70' helps to increase the depth of the slotted structure 50, thus making it easier to have a larger thickness of the color resist 20 in the second sub-display area A2.

[0137] Figure 20 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application.

[0138] In one implementation of this technical solution, the touch layer 07 includes a touch conductive structure 70, wherein the touch conductive structure 70 can be at least one of a touch electrode and a bridge electrode. A metal pad 70' can be disposed in the same layer as at least a portion of the touch conductive structure 70, that is, it can be disposed in the same layer as at least one of the touch electrode and the bridge electrode. Therefore, the metal pad 70' can be fabricated simultaneously with the touch conductive structure 70. For example, as... Figure 20 As shown, the touch conductive structure 70 in the touch layer 07 includes a touch electrode and the metal pad 70' can be disposed in the same layer as the touch electrode, so the metal pad 70' can be fabricated simultaneously with the touch electrode.

[0139] Optionally, if the metal pad 70' is reused as a touch conductive structure 70, then the metal pad 70' can be used to implement touch functionality. That is, at least a portion of the touch conductive structure 70 in the second sub-display area A2 can form the metal pad 70' around the slotted structure 50.

[0140] The metal pad 70' can be electrically connected to the touch electrode, and / or, the metal pad 70' can be electrically connected to the bridge electrode. For example, as Figure 20 As shown, when the touch conductive structure 70 in the touch layer 07 includes touch electrodes but does not include bridge electrodes, the metal pad 70' can be on the same layer as the touch electrodes and electrically connected to them. For example, when the touch conductive structure 70 in the touch layer 07 includes touch electrodes and bridge electrodes, the metal pad 70' can be disposed on the same layer as the touch electrodes and electrically connected, or the metal pad 70' can be disposed on the same layer as the bridge electrodes and electrically connected, or some of the metal pads 70' can be disposed on the same layer as the touch electrodes and electrically connected, and some of the metal pads 70' can be disposed on the same layer as the bridge electrodes and electrically connected.

[0141] Alternatively, the metal pad 70' may be electrically insulated from the touch conductive structure 70, in which case the metal pad 70' may be prepared during the preparation of the touch conductive structure 70 and may not be used to implement the touch function.

[0142] For example, such as Figure 20 As shown, when the touch conductive structure 70 in the touch layer 07 includes touch electrodes but does not include bridge electrodes, the metal pad 70' can be on the same layer as the touch electrodes but not electrically connected to them. For example, when the touch conductive structure 70 in the touch layer 07 includes touch electrodes and bridge electrodes, the metal pad 70' can be disposed on the same layer as the touch electrodes and electrically insulated, or the metal pad 70' can be disposed on the same layer as the bridge electrodes and electrically insulated, or some of the metal pads 70' can be disposed on the same layer as the touch electrodes and electrically insulated, and some of the metal pads 70' can be disposed on the same layer as the bridge electrodes and electrically insulated.

[0143] Figure 21 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application.

[0144] In one embodiment of this application, the display panel 001 further includes an encapsulation layer 08, which is located between the color resist layer 02 and the light-emitting device layer 01. Figure 21 As shown, the encapsulation layer 08 may include two inorganic layers C1 and an organic layer I1 located between the two inorganic layers C1. Wherein, as... Figure 21 As shown, at least a portion of the film layer in the auxiliary layer 05 reuses the encapsulation layer 08.

[0145] In one embodiment, since the organic layer I1 between the encapsulation layers 08 has a large thickness, one film layer in the auxiliary layer 05 can reuse the organic layer I1 in the encapsulation layer 08. This technical solution can utilize the thick organic layer in the encapsulation layer 08 to obtain groove structures 50 of various depths.

[0146] Furthermore, the encapsulation layer 08 can be disposed between the touch layer 07 and the light-emitting device layer 01. When the auxiliary layer 05 is adjacent to the touch layer 07, at least a portion of the film layer in the encapsulation layer 08 can be reused as a film layer in the auxiliary layer 05. This is because the thickness of the touch layer 07 and the film layer adjacent to it is usually relatively thin. Therefore, when the depth of the slotted structure 50 is large, the thickness of the film layer adjacent to the touch layer 07 may not reach the depth required by the slotted structure 50. Thus, the auxiliary layer 05 can reuse a portion of the film layer in the encapsulation layer 08.

[0147] Figure 22 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application. Figure 23 This is a partial cross-sectional schematic diagram of the display panel provided in the embodiments of this application.

[0148] In one embodiment of this application, such as Figure 22 and Figure 23As shown, the display panel 001 also includes a light extraction structure layer 09, which is located between the color resist layer 02 and the light-emitting device layer 01. The light extraction structure layer 09 includes multiple light extraction structures 91 and peripheral structures 92. The peripheral structures 92 surround the light extraction structures 91, and the refractive index of the peripheral structures 92 is less than that of the light extraction structures 91. Therefore, the interface between the light extraction structure 91 and the surrounding peripheral structures 92 is the interface between an optically denser medium and an optically less dense medium. The light extraction structure 91 is disposed on the side of the light-emitting device 10 facing the light-emitting surface, and the light extraction structure 91 includes an inclined sidewall. Thus, the light extraction structure 91 can convert the large-angle light emitted by the light-emitting device 10 below it into small-angle light for emission, thereby increasing the brightness of the sub-pixels.

[0149] In one implementation of this embodiment, at least the film layer of the auxiliary layer 05 reuses the light extraction structure layer 09, for example, as... Figure 22 As shown, the auxiliary layer 05 reuses the film layer containing the light extraction structure 91 in the light extraction structure layer 09.

[0150] In one implementation of this embodiment, the auxiliary layer 05 is disposed adjacent to the light extraction structure layer 09. Furthermore, when the depth of the slotted structure 50 in the auxiliary layer 05 is relatively deep, such as... Figure 23 As shown, part of the film layer in the auxiliary layer 05 is reused as the light extraction structure layer 09.

[0151] Figure 24 This is a schematic diagram of a display device provided in an embodiment of this application.

[0152] This application also provides a display device, such as... Figure 24 As shown, the display device provided in this application embodiment may include the display panel 001 as provided in any of the above embodiments. The display device provided in this application embodiment may be a mobile phone; in addition, the display device provided in this application embodiment may also be a computer, television, or other display device.

[0153] like Figure 24 As shown, the display device provided in this embodiment further includes an optical functional element 002, which is disposed at a position corresponding to the first region A1 of the display panel 001. That is, along the direction perpendicular to the plane of the display panel 001, the optical functional element 002 is disposed below the first region A1 of the display panel 001. Thus, the optical functional element 002 can emit light towards the light-emitting surface of the display panel 001 through the first region A1, and / or can receive light from the light-emitting surface of the display panel 001 through the first region A1.

[0154] Among them, the optical functional element 002 is at least one of an optical fingerprint sensor, an iris recognition sensor, and a camera.

[0155] In this embodiment, by controlling the thickness of at least a portion of the color resist 20 in the second sub-display area A2 to be greater than the thickness of the color resist 20 in the first sub-display area A1, the transmittance of the color resist 20 in the second sub-display area A2 to external light can be reduced. This reduces the amount of light transmitted through the color resist 20 into the film layer containing the light-emitting device 10 and the pixel circuit in the display panel 001. In other words, by setting a larger thickness of the color resist 20 in the second sub-display area A2, the amount of light that can be reflected in the second sub-display area A2 is reduced. This results in the reflectance of the sub-pixel areas in the second sub-display area A2 to external light being less than that in the sub-pixel areas of the first sub-display area A1. Therefore, the technical solution of this application reduces the reflectance difference between the second sub-display area A2 and the first sub-display area A1, ensuring the display uniformity of the display device and avoiding the problem of the second sub-display area A2 being clearly visible due to a large reflectance difference between the two.

[0156] The above description is merely a preferred 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 scope of protection of this application.

Claims

1. A display panel, characterized by, The display region comprises a first sub-display region and a second sub-display region, and the second sub-display region has a light-transmitting region; The display region comprises a light-emitting device layer and a color resist layer, the light-emitting device layer comprises a plurality of light-emitting devices, and the color resist layer comprises a plurality of color resist; the color resist is located on the side of the light-emitting device facing the light-emitting surface of the display panel; At least part of the color resist in the second sub-display region has a thickness greater than that of the color resist in the first sub-display region; The display region further comprises an auxiliary layer, which is located between the light-emitting device layer and the color resist layer; In the first sub-display region, the part of the auxiliary layer under the color resist is a first part; in the second sub-display region, the part of the auxiliary layer under the color resist is a second part; The thickness of the first part is greater than that of at least part of the second part.

2. The display panel of claim 1, wherein, The color resist in at least part of the second sub-display region is flush with the upper surface of the color resist in the first sub-display region.

3. The display panel of claim 1, wherein, The display region further comprises a third sub-display region, which is located between the first sub-display region and the second sub-display region, and the light transmittance of the third sub-display region is less than that of the second sub-display region; The thickness of the color resist in the third sub-display region is greater than that in the first sub-display region and less than that in the second sub-display region.

4. The display panel of claim 1, wherein, The display region further comprises a third sub-display region, which is located between the first sub-display region and the second sub-display region, and the light transmittance of the third sub-display region is less than that of the second sub-display region; The thickness of the color resist in the third sub-display region is the same as that in the second sub-display region.

5. The display panel of claim 1, wherein, Among the color resist of the same color provided in the second sub-display region, the thickness of the color resist close to the first sub-display region is less than that of the color resist away from the first sub-display region.

6. The display panel of claim 1, wherein, The part of the auxiliary layer in the second sub-display region comprises a plurality of slot structures facing the color resist layer, and the color resist in the second sub-display region fills the slot structures.

7. The display panel of claim 6, wherein, The depth of the slot structures is the same.

8. The display panel of claim 6, wherein, The plurality of light-emitting devices included in the light-emitting device layer comprises first color light-emitting devices and second color light-emitting devices, and the plurality of color resist included in the color resist layer comprises first color color resist and second color color resist; the first color color resist is located on the side of the first color light-emitting device facing the light-emitting surface of the display panel, and the second color color resist is located on the side of the second color light-emitting device facing the light-emitting surface of the display panel; The light-emitting efficiency of the first color light-emitting device is less than that of the second color light-emitting device; in the second sub-display region, the thickness of the first color color resist is less than that of the second color color resist.

9. The display panel of claim 8, wherein, The depth of the slot structure filled by the first color color resist is less than that of the slot structure filled by the second color color resist.

10. The display panel of claim 8, wherein, The plurality of light emitting devices included in the light emitting device layer further includes a third color light emitting device, and the plurality of color resist included in the color resist layer further includes a third color color resist; the third color color resist is located on a side of the third color light emitting device facing the light emitting surface of the display panel; The light emitting efficiency of the third color light emitting device is greater than the light emitting efficiency of the first color light emitting device and less than the light emitting efficiency of the second color light emitting device; in the second sub-display area, the thickness of the third color color resist is less than the thickness of the second color color resist and greater than the thickness of the first color color resist.

11. The display panel of claim 10, wherein, The depth of the slot structure filled by the third color color resist is less than the depth of the slot structure filled by the second color color resist and greater than the depth of the first color color resist.

12. The display panel of claim 11, wherein, The auxiliary layer includes a first sub-insulating layer, a second sub-insulating layer and a third sub-insulating layer, the first sub-insulating layer is located on a side of the second sub-insulating layer away from the color resist layer, and the third sub-insulating layer is located on a side of the second sub-insulating layer facing the light emitting device layer; the first sub-insulating layer includes a first hollow part, the second sub-insulating layer includes a second hollow part, and the third sub-insulating layer includes a third hollow part; The slot structure filled by the first color color resist is a first slot structure, the first slot structure includes a first hollow part; the slot structure filled by the second color color resist is a second slot structure, the second slot structure includes overlapping first, second and third hollow parts; the slot structure filled by the third color color resist is a third slot structure, the third slot structure includes overlapping first and second hollow parts.

13. The display panel of claim 6, wherein, The display panel further includes a touch layer, the touch layer is located between the color resist layer and the light emitting device layer; the auxiliary layer is arranged adjacent to the touch layer.

14. The display panel of claim 13, wherein, The touch layer includes a first touch conductive layer; The auxiliary layer includes a first sub-auxiliary layer, the first sub-auxiliary layer is located between the first touch conductive layer and the color resist layer; at least part of the slot structure penetrates the first sub-auxiliary layer.

15. The display panel of claim 14, wherein, The touch layer further includes a second touch conductive layer, the second touch conductive layer is located on a side of the first touch conductive layer away from the color resist layer; The auxiliary layer includes a second sub-auxiliary layer, the second sub-auxiliary layer is located between the first touch conductive layer and the second touch conductive layer; at least part of the slot structure penetrates the first sub-auxiliary layer and the second sub-auxiliary layer.

16. The display panel of claim 15, wherein, The first touch conductive layer includes a cross-bridge electrode, and the second touch conductive layer includes a touch electrode; the cross-bridge electrode is electrically connected to two adjacent touch electrodes; The first sub-auxiliary layer and / or the second sub-auxiliary layer include a hollow structure, and the cross-bridge electrode is arranged in the hollow structure.

17. The display panel of claim 15, wherein, The auxiliary layer includes a third sub-auxiliary layer, the third sub-auxiliary layer is located on a side of the touch layer away from the color resist layer; at least part of the slot structure penetrates the first sub-auxiliary layer, the second sub-auxiliary layer and the third sub-auxiliary layer.

18. The display panel of claim 13, wherein, The second sub-display area further includes a metal pad layer, the metal pad layer is arranged adjacent to the auxiliary layer; The metal pad layer comprises a plurality of metal pads, and the metal pads are located at the periphery of the slot structure.

19. The display panel of claim 18, wherein, The touch control layer comprises a touch control conductive structure; and the metal pads are multiplexed as part of the touch control conductive structure.

20. The display panel of claim 18, wherein, The touch control layer comprises a touch control conductive structure; and the metal pads are disposed in the same layer as the touch control conductive structure and are electrically insulated from the touch control conductive structure.

21. The display panel of claim 1, wherein, The display panel further comprises a light extraction structure layer, and the light extraction structure layer is located between the color resistance layer and the light emitting device layer; the auxiliary layer is disposed adjacent to the light extraction structure layer, and / or at least part of the film layers in the auxiliary layer multiplex the light extraction structure layer.

22. The display panel of claim 1, wherein, The display panel further comprises an encapsulation layer, and the encapsulation layer is located between the color resistance layer and the light emitting device layer; at least part of the film layers in the auxiliary layer multiplex the encapsulation layer.

23. A display device comprising: The display panel comprises the display panel as claimed in any one of claims 1-22.

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