Display panel and display device

Abstract

This invention relates to the field of display technology, and more particularly to display panels and display devices, for preventing the display panel from altering the propagation direction of external light incident on a light-transmitting display area, thereby avoiding interference with the function of optical components in the display device. The display panel has a display area; the display area includes a light-transmitting display area and a conventional display area; the light-transmitting display area is located near a first edge of the display area; the display panel includes: a display substrate, including a back plate and a plurality of light-emitting devices located on the back plate; the plurality of light-emitting devices are located in the display area; and a planarization layer located on the side of the plurality of light-emitting devices away from the back plate; the planarization layer includes a first sub-section located in the light-transmitting display area; the surface of the first sub-section away from the display substrate is a flat surface. The display panel and display device are used for image display.

Description

Technical Field

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

[0002] With the development of display technology, full display with camera (FDC) has been gradually applied to display products due to its advantage of a large screen-to-body ratio. Full-screen display devices typically place optical components such as cameras under the display panel, greatly improving the screen-to-body ratio. Summary of the Invention

[0003] This invention provides a display panel and a display device to prevent the display panel from changing the propagation direction of external light incident on the light-transmitting display area, thereby avoiding affecting the function of optical components in the display device.

[0004] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] Some embodiments of the present invention provide a display panel having a display area. The display area includes a light-transmitting display area and a non-light-transmitting display area. The light-transmitting display area is located near a first edge of the display area. The display panel includes: a display substrate, and a planarization layer located on the side of the plurality of light-emitting devices away from the back plate. The display substrate includes a back plate and a plurality of light-emitting devices located on the back plate; the plurality of light-emitting devices are located in the display area; the planarization layer includes a first sub-section located in the light-transmitting display area; the surface of the first sub-section away from the back plate is a flat surface.

[0006] Some embodiments of the present invention provide a display panel that divides the display area of ​​the display panel into a light-transmitting display area and a non-light-transmitting display area. By providing a planarization layer on the side of the light-emitting device of the display substrate away from the back plate, and making the surface of the first sub-section of the light-transmitting display area away from the display substrate a flat surface, the light rays incident on the flat surface and passing through the first sub-section undergo almost no refraction, so that the propagation direction of the light rays hardly changes, thereby avoiding affecting the propagation direction of the light rays passing through the light-transmitting display area. When this display panel is applied to a display device, and the light rays are incident on the optical element through the first sub-section, the light rays hardly undergo refraction, or the incident direction of the light rays incident on the flat surface and the exit direction of the light rays after passing through the first sub-section hardly change, so that the light rays are almost not deviated from the principal optical axis of the optical element, thereby avoiding affecting the working performance of the optical element. For example, when the aforementioned optical element is a camera, the external light rays can pass through the flat surface and enter the camera without much refraction, or the incident direction of the external light rays entering the flat surface and the exit direction of the external light rays after passing through the first sub-part remain almost unchanged. This ensures that the external light rays collected by the camera are almost completely offset from the camera's principal optical axis, thereby reducing or even avoiding the risk of diffraction spot distortion (such as elongation or ellipticization of the diffraction spot) in the images captured by the camera using the external light rays. This eliminates the adverse effects of the aforementioned wedge plate structure on camera imaging, thereby improving the resolution and quality of the images captured by the camera.

[0007] In some embodiments, the minimum distance between the light-transmitting display area and the first edge is greater than or equal to 0.

[0008] In some embodiments, when the minimum distance between the light-transmitting display area and the first edge is greater than 0, there exists a conventional display area between the light-transmitting display area and the first edge.

[0009] In some embodiments, the display panel further has a peripheral area surrounding the display area; the planarization layer further includes a second sub-part connected to the first sub-part, the second sub-part being located on the side of the first sub-part closer to the first edge and overlapping the first edge; the second sub-part has a bottom surface, and a first side surface and a second side surface connected to the bottom surface, the first side surface contacting the first sub-part; the angle between the second side surface and the plane of the back panel is an acute angle.

[0010] In some embodiments, the angle between the second side and the plane of the back plate is in the range of 20° to 50°.

[0011] In some embodiments, the cross-sectional shape of the second sub-part includes a trapezoid or a triangle in a direction perpendicular to the first side and parallel to the thickness direction of the display panel.

[0012] In some embodiments, the material of the planarization layer includes photoresist.

[0013] In some embodiments, the display panel further includes: a first inorganic encapsulation layer located between the display substrate and the planarization layer; a second inorganic encapsulation layer located on the side of the planarization layer away from the display substrate, wherein the first inorganic encapsulation layer, the planarization layer, and the second inorganic encapsulation layer form a thin film encapsulation layer; and at least one barrier wall located in the peripheral region; the barrier wall surrounds the planarization layer, and the orthographic projection of the barrier wall on the display substrate does not overlap with the orthographic projection of the planarization layer on the display substrate, wherein the first inorganic encapsulation layer and the second inorganic encapsulation layer cover the barrier wall.

[0014] In some embodiments, the planarization layer includes: a first sub-planarization layer disposed on one side of the display substrate, an adhesive layer disposed on the side of the first sub-planarization layer away from the display substrate, and a second sub-planarization layer disposed on the side of the adhesive layer away from the display substrate. The surface of the second sub-planarization layer away from the display substrate is a flat surface. In the first sub-planarization layer, a portion of the surface on the side away from the display substrate and located in the light-transmitting display area is a first arc surface. In the second sub-planarization layer, a surface on the side close to the display substrate and located in the light-transmitting display area is a second arc surface. The center of curvature of the first arc surface and the center of curvature of the second arc surface are respectively located on opposite sides of the adhesive layer.

[0015] In some embodiments, the angle between the first arc surface and the plane where the back plate is located, and the angle between the second arc surface and the plane where the back plate is located, are equal.

[0016] In some embodiments, the first sub-flattening layer and the second sub-flattening layer are arranged symmetrically.

[0017] In some embodiments, the surface of the adhesive layer near the backing plate has the same shape as the surface of the first sub-planar layer away from the backing plate. The surface of the adhesive layer away from the backing plate has the same shape as the surface of the second sub-planar layer near the backing plate.

[0018] In some embodiments, the adhesive layer includes a first adhesive portion and a second adhesive portion that are sequentially stacked along a direction away from the back plate, and the first adhesive portion and the second adhesive portion are symmetrically arranged.

[0019] In some embodiments, the material of the first sub-planarization layer is the same as the material of the second sub-planarization layer.

[0020] In some embodiments, the display panel further includes a peripheral region surrounding the display area. The display panel also includes: a first inorganic encapsulation layer located between the display substrate and the first sub-planarization layer; a second inorganic encapsulation layer located between the first sub-planarization layer and the adhesive layer; and at least one barrier located in the peripheral region. The first inorganic encapsulation layer, the first sub-planarization layer, and the second inorganic encapsulation layer form a thin-film encapsulation layer. The barrier surrounds the planarization layer, and the orthographic projection of the barrier on the display substrate does not overlap with the orthographic projection of the planarization layer on the display substrate. The first inorganic encapsulation layer and the second inorganic encapsulation layer cover the barrier.

[0021] In some embodiments, the back panel includes: a plurality of pixel circuits; the plurality of pixel circuits includes a plurality of first pixel circuits and a plurality of second pixel circuits; the plurality of light-emitting devices includes: a plurality of first light-emitting devices located in the light-transmitting display area, and a plurality of second light-emitting devices located in the conventional display area; the first pixel circuits are electrically connected to the first light-emitting devices; the second pixel circuits are electrically connected to the second light-emitting devices; wherein, the first pixel circuits are located in the conventional display area, and / or, the first pixel circuits are located in the peripheral area; the second pixel circuits are located in the conventional display area.

[0022] In some embodiments, the back panel includes: a plurality of pixel circuits; the plurality of pixel circuits includes a plurality of first pixel circuits and a plurality of second pixel circuits; the plurality of light-emitting devices includes: a plurality of first light-emitting devices located in the light-transmitting display area, and a plurality of second light-emitting devices located in the conventional display area; the first pixel circuits are electrically connected to the first light-emitting devices; the second pixel circuits are electrically connected to the second light-emitting devices; wherein the second pixel circuits are located in the conventional display area; the first pixel circuits are located in the light-transmitting display area, and the first light-emitting devices cover the first pixel circuits electrically connected thereto.

[0023] Some embodiments of the present invention also provide a display device, the display device comprising: a display panel as described in any of the above embodiments, a cover plate located on the light-emitting side of the display panel; and an optical element located on the non-light-emitting side of the display panel and in the light-transmitting display area of ​​the display panel.

[0024] The beneficial effects that the display device provided in some embodiments of the present invention can achieve are the same as the beneficial effects that the display panel provided in some embodiments above can achieve, and will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of this invention, the accompanying drawings used in some embodiments of this invention will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be considered schematic diagrams and are not intended to limit the actual dimensions, etc., of the products involved in the embodiments of this invention.

[0026] Figure 1a This is a structural diagram of a display device according to some embodiments of the present invention;

[0027] Figure 1b This is a structural diagram of another display device in some embodiments of the present invention;

[0028] Figure 2a This is a structural diagram of a display panel in some embodiments of the present invention;

[0029] Figure 2b This is a structural diagram of another display panel in some embodiments of the present invention;

[0030] Figure 3a for Figure 2b The diagram shows a cross-sectional view of the display panel along the G-G' direction.

[0031] Figure 3b For along Figure 2a The diagram shows a cross-sectional view of the display panel along the K-K' direction.

[0032] Figure 3c For along Figure 2a The diagram shows a cross-sectional view of the display panel along the K-K' direction.

[0033] Figure 4a This is a structural diagram of a display device in one implementation method;

[0034] Figure 4b This is a photograph of a light source object taken by a display device in one implementation method;

[0035] Figure 4c This is a photograph of a light source object taken in one implementation where the display panel does not have an encapsulation layer.

[0036] Figure 4d A photograph of a light source object taken when an encapsulation layer is set for the display panel in one implementation.

[0037] Figure 4e A simulation image of a light source object taken when an encapsulation layer is set for the display panel in one implementation.

[0038] Figure 4f A photograph of a light source object taken when an encapsulation layer is set for the display panel in one implementation.

[0039] Figure 5a This is a simulation image of a light source object taken by a display device in some embodiments of the present invention;

[0040] Figure 5b These are photographs of a light source object taken by a display device in some embodiments of the present invention;

[0041] Figure 6a This is a flowchart illustrating a method for manufacturing a display panel according to some embodiments of the present invention;

[0042] Figures 6b to 6g This is a step diagram illustrating a method for manufacturing a display panel according to some embodiments of the present invention;

[0043] Figure 7 This is a flowchart illustrating another method for manufacturing a display panel in some embodiments of the present invention;

[0044] Figure 8a This is a flowchart illustrating a method for manufacturing a display panel according to some embodiments of the present invention;

[0045] Figures 8b to 8i This is a step diagram illustrating a method for manufacturing a display panel according to some embodiments of the present invention. Detailed Implementation

[0046] The technical solutions in some embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided by the present invention are within the scope of protection of the present invention.

[0047] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0048] In describing some embodiments, the term "connection" and its derivative expressions may be used. For example, the term "connection" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0049] The use of “configured as” in this article implies an open and inclusive language that does not preclude devices from being configured to perform additional tasks or steps.

[0050] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0051] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on another layer or substrate, or that there is an intermediate layer between the layer or element and another layer or substrate.

[0052] In this document, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0053] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0054] like Figure 1a As shown, some embodiments of the present invention provide a display device 1.

[0055] In some examples, the aforementioned display device 1 can be any display device that displays either moving (e.g., video) or stationary (e.g., still image) text or images. More specifically, the display device of the described embodiments is contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0056] For example, the display device 1 includes: a frame, a display driver IC (Integrated Circuit), and other electronic components.

[0057] In some examples, such as Figure 1b As shown, the above-mentioned display device 1 also includes: a display panel 10, a cover plate 20, and optical elements 30.

[0058] For example, the cover plate 20 is located on the light-emitting side of the display panel 10. The light-emitting side of the display panel 10 refers to the side of the display panel 10 where the image can be displayed.

[0059] For example, the cover plate 20 can be made of glass. The cover plate 20 can cover the display panel 10, isolating the outside world from the display panel 10, thereby protecting the display panel 10.

[0060] For example, such as Figure 2a As shown, the display panel 10 includes a display area A and a peripheral area B.

[0061] For example, peripheral area B can surround display area A. Peripheral area B can be used to set up circuit structures such as shift registers, thereby providing the necessary electrical signals to display area A.

[0062] The shape of display area A can be varied, for example, it can be a circle, a rectangle, etc.

[0063] For ease of description, let's take a rectangular shape for display area A as an example. This rectangle is not strictly a rectangle; for example, its four corners may be rounded. Display area A has four edges, for example, opposing first and third edges, and opposing second and fourth edges. The length of the first edge may be the same as or different from the length of the second edge.

[0064] For example, such as Figure 1b and Figure 2a As shown, display area A includes a light-transmitting display area A1 and a regular display area A2, with the light-transmitting display area A1 located near the first edge CL of display area A.

[0065] For example, the shape of the light-transmitting display area A1 can be circular, elliptical, or rectangular. Taking a circular light-transmitting display area A1 as an example, "the light-transmitting display area A1 is close to the first edge CL of the display area A" means that the distance between the light-transmitting display area A1 and the first edge CL of the display area A is relatively small.

[0066] For example, in the above-described display panel 10, both the portion located in the light-transmitting display area A1 and the portion located in the conventional display area A2 can be used for image display.

[0067] For example, the light transmittance of the light-transmitting display area A1 is greater than that of the conventional display area A2.

[0068] For example, the optical element 30 is located on the non-light-emitting side of the display panel and in the light-transmitting display area A1 of the display panel.

[0069] The non-light-emitting side of the aforementioned display panel 10 refers to the side opposite to the light-emitting side of the display panel 10. Since the light transmittance of the light-transmitting display area A1 is greater than that of the conventional display area A2, the external light is less lost after passing through the light-transmitting display area A1, thereby allowing the optical element 30 to obtain sufficient light and avoiding affecting the function of the optical element 30.

[0070] For example, the optical element 30 mentioned above can be a camera, a fingerprint recognition sensor, or an infrared sensor, etc.

[0071] When the aforementioned optical element 30 is working, external light needs to pass through the light-transmitting display area A1 to illuminate the optical element 30 in order to activate its corresponding function. This invention takes the optical element 30 as a camera as an example.

[0072] For example, during camera operation, external light can pass through the portion of the display panel 10 located in the light-transmitting display area A1. This allows the camera to capture the light and perform the photo-taking function. For instance, when the camera is working (e.g., taking a selfie), the light-transmitting display area A1 can display a black image, while the regular display area A2 displays the selfie image, clearly showing the camera's location. Alternatively, both the light-transmitting display area A1 and the regular display area A2 can display the selfie image without showing the camera's location.

[0073] For example, when the camera is not working, the portions of the display panel 10 located in the light-transmitting display area A1 and the conventional display area A2 can both be displayed, so that the display panel 10 and the display device 1 as a whole can display images.

[0074] In some examples, such as Figure 3a and Figure 3c As shown, the display panel 10 includes a display substrate 11.

[0075] The aforementioned display substrate 11 may include a backplate 100 and a plurality of light-emitting devices 200.

[0076] For example, the backplane 100 includes a substrate 101 and a pixel circuit layer disposed on one side of the substrate 101.

[0077] For example, the substrate 101 described above can be a flexible substrate or a rigid substrate.

[0078] For example, when the substrate 101 is a flexible substrate, the substrate material can be a highly elastic material such as dimethylsiloxane, PI (polyimide), or PET (polyethylene terephthalate).

[0079] For example, if the substrate 101 is a rigid substrate, the substrate material can be glass or the like.

[0080] The aforementioned plurality of light-emitting devices 200 are located in display area A. For example, the plurality of light-emitting devices 200 include a plurality of first light-emitting devices 210 and a plurality of second light-emitting devices 220. Among them, the plurality of first light-emitting devices 210 are located in light-transmitting display area A1, and the plurality of second light-emitting devices 220 are located in conventional display area A2.

[0081] For example, the pixel circuit layer described above includes a plurality of pixel circuits 102. The plurality of pixel circuits 102 includes a plurality of first pixel circuits 1021 and a plurality of second pixel circuits 1022.

[0082] The aforementioned first light-emitting device 210 is electrically connected to the first pixel circuit 1021. For example, multiple first light-emitting devices 210 and multiple first pixel circuits 1021 can be electrically connected in a one-to-one correspondence. The first light-emitting device 210 can emit light under the control of the control signal transmitted by the first pixel circuit 1021. The aforementioned second light-emitting device 220 is electrically connected to the second pixel circuit 1022. For example, multiple second light-emitting devices 220 and multiple second pixel circuits 1022 can be electrically connected in a one-to-one correspondence. The second light-emitting device 220 can emit light under the control of the control signal transmitted by the second pixel circuit 1022.

[0083] For example, the second pixel circuit 1022 is located in the conventional display area A2 and is electrically connected to the second light-emitting device 220, which is also located in the conventional display area A2. This makes the distance between the second pixel circuit 1022 and the electrically connected second light-emitting device 220 relatively small, thereby reducing the loss of the control signal transmitted by the second pixel circuit 1022 during transmission, improving the accuracy of the control signal transmitted by the second pixel circuit 1022, and thus improving the control capability of the second pixel circuit 1022 over the second light-emitting device 220.

[0084] It is understood that there are multiple ways to set the first pixel circuit 1021, and it can be set according to the actual situation. This invention does not limit this.

[0085] In some examples, such as Figure 3a As shown, the first pixel circuit 1021 is located in the conventional display area A2. That is, both the first pixel circuit 1021 and the second pixel circuit 1022 are located in the conventional display area A2, and the first pixel circuit 1021 can be connected via a transparent wire (…). Figure 3a (Not shown in the diagram) It is electrically connected to the first light-emitting device 210 located in the light-transmitting display area A1. For example, when the pixel density of the light-transmitting display area A1 and the conventional display area A2 is the same, the ratio of the number of first pixel circuits 1021 to second pixel circuits 1022 can be determined based on the relative area sizes of the conventional display area A2 and the light-transmitting display area A1 (or the number of first light-emitting devices 210 and second light-emitting devices 220). Generally, the area of ​​the light-transmitting display area A1 is much smaller than the area of ​​the conventional display area A2. Therefore, when the pixel density of the light-transmitting display area A1 and the conventional display area A2 is the same, a column of first pixel circuits 1021 can be set between every four columns of second pixel circuits 1022, etc. Therefore, the first pixel circuit 1021 is not provided in the light-transmitting display area A1 of the display panel 10, so that the light transmittance of the light-transmitting display area A1 is greater than that of the conventional display area A2 and the surrounding area B. This avoids the first pixel circuit 1021 blocking the external light incident on the light-transmitting display area A1, and allows the camera to obtain enough light through the light-transmitting display area A1, so that the camera can realize the photo-taking function.

[0086] In other examples, such as Figure 3c As shown, the first pixel circuit 1021 is located in the peripheral area B. The first pixel circuit 1021 located in the peripheral area B can be connected via a transparent wire ( Figure 3c (Not shown in the diagram) It is electrically connected to the first light-emitting device 210 located in the light-transmitting display area A1. Of course, among the multiple first pixel circuits 1021, some of the first pixel circuits 1021 can be located in the peripheral area B, and others can be located in the conventional display area A2. Therefore, the first pixel circuits 1021 are not provided in the light-transmitting display area A1 of the display panel 10, so that the light transmittance of the light-transmitting display area A1 is greater than that of the conventional display area A2 and the peripheral area B. This can avoid the first pixel circuits 1021 blocking the external light incident on the light-transmitting display area A1, and thus allow the camera to obtain sufficient light through the light-transmitting display area A1, so that the camera can realize the photo-taking function.

[0087] In some other examples, such as Figure 3b As shown, the first pixel circuit 1021 is located in the light-transmitting display area A1, and the first light-emitting device 210 covers the first pixel circuit 1021, which is electrically connected to it. For example, the first pixel circuit 1021 and the first light-emitting device 210, which are electrically connected to it, are arranged facing each other, and the orthographic projection of the first pixel circuit 1021 on the substrate is within the orthographic projection range of the first light-emitting device 210 on the substrate. At this time, the first pixel circuit 1021 is completely covered by the first light-emitting device 210, and the first pixel circuit 1021 is electrically connected to the first light-emitting device 210 through a transparent wire. Therefore, the obstruction of external light by the first pixel circuit 1021 can be reduced or even avoided, so that the camera can obtain sufficient light through the light-transmitting display area A1, enabling the camera to perform the photo-taking function.

[0088] For example, in the display panel 10, each light-emitting device 200 can emit light under the driving action of the corresponding pixel circuit 102. The light emitted by multiple light-emitting devices 200 cooperates with each other, thereby enabling the display panel 10 to realize the display function.

[0089] In one implementation, such as Figure 4aAs shown, the display panel further includes an encapsulation layer 15' located on the side of the plurality of light-emitting devices away from the back panel. This encapsulation layer 15' includes a first encapsulation layer, a second encapsulation layer 12', and a third encapsulation layer stacked together. The second encapsulation layer 12' is made of an organic material, which has a certain degree of fluidity. The fabrication process of the second encapsulation layer 12' is as follows: First, an organic film is formed by printing the organic material using inkjet printing, and the printing position is stopped inside the baffle; then, the organic film is leveled, and the baffle intercepts and holds the organic film inside the baffle, forming the second encapsulation layer 12'. Due to the surface tension of the liquid, the surface of the second encapsulation layer 12' near the baffle, on the side away from the back panel, is arc-shaped.

[0090] For example, the second encapsulation layer includes a first portion 121' located in the under-display camera area. The distance between the first portion 121' and the back panel varies at different positions on the surface of the first portion 121' away from the back panel. Viewed from the peripheral area towards the display area, the first portion 121' resembles a ramp or a wedge structure. When the aforementioned display panel is applied to a display device, external light passes through the first portion 121' of the wedge structure and is incident on the camera of the display device. However, because the distance between the first portion 121' and the back panel varies at different positions on the surface of the first portion 121' away from the back panel—that is, the surface of the first portion 121' away from the back panel is non-horizontal—the incident external light is refracted at this non-horizontal surface, deviating from the principal optical axis of the camera. This causes a shift in the incident focus, resulting in poor distortion of the diffraction spot when the camera uses this light to form an image (e.g., the diffraction spot is elongated, etc.). Figure 4b As shown in the image, this causes a decrease in image resolution.

[0091] The inventors of this invention verified the mechanism underlying the aforementioned problem. A photographic test was conducted on a light-emitting object without an encapsulation layer 15' on the light-emitting side of the display panel. The image captured by the camera is shown below. Figure 4c As shown, without the encapsulation layer 15', the diffraction spot in the captured image shows no obvious distortion. However, with the encapsulation layer 15' applied, the captured image appears as follows: Figure 4d As shown, the diffraction spot in the image is distorted, resulting in poor image quality. This indicates that the presence of the encapsulation layer 15' is the cause of the decreased image quality. Furthermore, the inventors conducted simulation experiments and produced corresponding real-world images demonstrating the camera's performance after implementing the encapsulation layer 15'. The simulation images are shown below. Figure 4e As shown in the actual photos... Figure 4fAs shown in the simulation results, the light spot is elongated and distorted, resulting in distortion in the captured image and a decrease in resolution. Furthermore, in images of non-light-source objects, such as those containing text, the text is blurred, making it difficult for users to accurately identify the content.

[0092] Based on this, some embodiments of the present invention provide a display panel 10, such as... Figure 3a , Figure 3b and Figure 3c As shown, the display panel 10 also includes a flat layer 12 located on the side of the plurality of light-emitting devices 200 away from the back panel 100.

[0093] For example, the planarization layer 12 can be located in the display area A. Of course, the planarization layer 12 can also be partially located in the display area A and partially extend into the peripheral area B. The planarization layer 12 is used to achieve planarization of the light-emitting side of the display panel 10.

[0094] In some examples, the planarization layer 12 includes a first sub-section 121 located in the light-transmitting display area A1; the surface of the first sub-section 121 on the side away from the display substrate 11 is a flat surface.

[0095] For example, such as Figure 2a As shown, the boundary of the first sub-part 121 coincides with the boundary of the light-transmitting display area A1.

[0096] For example, the surface of the first sub-part 121 away from the display substrate 11 can be a horizontal plane, and the distance between each position of the surface of the first sub-part 121 away from the display substrate 11 and the plane where the display substrate 11 is located is the same or approximately the same.

[0097] Thus, when external light enters the aforementioned flat surface and passes through the first sub-part 121, the external light is almost not refracted, or the angle of refraction is very small, and the direction of propagation of the external light is almost unchanged.

[0098] Therefore, some embodiments of the present invention provide a display panel 10, which divides the display area A of the display panel 10 into a light-transmitting display area A1 and a conventional display area A2. By providing a planarization layer 12 on the side of the light-emitting device 200 of the display substrate 11 away from the back plate 100, and making the surface of the first sub-part 121 of the under-screen camera area in the planarization layer 12 away from the display substrate 11 a flat surface, external light incident on the flat surface and passing through the first sub-part 121 will hardly refract, so that the propagation direction of the external light will hardly change, thereby avoiding affecting the propagation direction of the external light passing through the light-transmitting display area A1. When the display panel 10 is applied to a display device, and when external light is incident on the optical element through the first sub-part, the external light will hardly refract, or the incident direction of the external light on the flat surface and the exit direction of the external light after passing through the first sub-part will hardly change, so that the external light is almost not deviated from the principal optical axis of the optical element, thereby avoiding affecting the working performance of the optical element.

[0099] For example, when the aforementioned optical element is a camera, the external light rays can pass through the flat surface and enter the camera without much refraction, or the incident direction of the external light rays entering the flat surface and the exit direction of the external light rays after passing through the first sub-part remain almost unchanged. This ensures that the external light rays collected by the camera are almost completely offset from the camera's principal optical axis, thereby reducing or even avoiding the risk of diffraction spot distortion (such as elongation or ellipticization of the diffraction spot) in the images captured by the camera using the external light rays. This eliminates the adverse effects of the aforementioned wedge plate structure on camera imaging, thereby improving the resolution and quality of the images captured by the camera.

[0100] The inventors of this invention also conducted simulation experiments and real-world shooting experiments on the shooting of light source objects by the display panel 10 and its corresponding display device 1 provided in the above embodiments of this invention, specifically as follows: Figures 5a-5b As shown. Figure 5a This is a simulation result of the display device in this invention photographing a light source object. It can be seen that the diffraction spot of the light source hardly undergoes elongation or distortion (compared to...). Figure 4e compared to). Figure 5b yes Figure 5a The corresponding photograph of the light source, and one implementation method Figure 4fIn comparison, this image shows almost no diffraction spots, has higher resolution, and improved image quality. Furthermore, when photographing non-light source objects (such as objects containing text), the text content is clearly visible in the resulting image. Therefore, the display panel 10 and display device 1 in the embodiments provided by this invention, by providing a planarization layer 12 on the side of the light-emitting device 200 in the display substrate away from the back plate 100, and ensuring that the surface of the first sub-part 121 in the under-screen camera area of ​​the planarization layer 12 on the side away from the display substrate 11 is a flat surface, effectively alleviates the diffraction spot distortion phenomenon in images captured by the camera and improves image resolution.

[0101] In some examples, such as Figure 3a and Figure 3c As shown, the surface of the first sub-part 121 of the planarization layer 12 away from the display substrate 11 has a spacing between it and the plane where the display substrate 11 is located, which fluctuates from 0 nm to 400 nm.

[0102] For example, the surface of the first sub-part 121 away from the display substrate 11 is a non-absolutely flat surface, and the flatness of the flat surface is in the range of 0nm to 400nm.

[0103] For example, when the overall average thickness of the planarization layer 12 is 10 μm, the fluctuation range of the distance between the surface of the first sub-part 121 away from the display substrate 11 and the plane where the back plate 100 is located is negligible relative to the thickness of the planarization layer 12, and the impact of the fluctuation range on the diffraction spot distortion and resolution reduction of the camera imaging is negligible. In other words, the surface of the first sub-part 121 away from the display substrate within the above fluctuation range can still be considered a flat surface.

[0104] For example, the spacing between the surface of the first sub-part 121 away from the display substrate 11 and the plane on which the display substrate 11 is located can vary from 0 nm to 400 nm. That is, when the overall average thickness of the planarization layer 12 is 10 μm, the spacing between the surface of the first sub-part 121 away from the display substrate 11 and the plane on which the display substrate 11 is located can be 10 μm (i.e., 10 μm + 0 nm), 10.02 μm (i.e., 10 μm + 20 nm), 10.10 μm (i.e., 10 μm + 100 nm), 10.20 μm (i.e., 10 μm + 200 nm), or 10.40 μm (i.e., 10 μm + 400 nm).

[0105] In some examples, the minimum distance between the light-transmitting display area A1 and the first edge CL of the display area A is greater than or equal to 0.

[0106] like Figure 2a As shown, when the minimum distance between the light-transmitting display area A1 and the first edge CL of the display area A is equal to 0, for example, when the circular light-transmitting display area A1 is tangent to the first edge CL of the display area A, at the tangent position, there is no conventional display area A2 between the first sub-part 121 or the light-transmitting display area A1 and the first edge CL of the display area A, but there are conventional display areas A2 on the left and right sides at the tangent position.

[0107] like Figure 2b As shown, when the minimum distance between the light-transmitting display area A1 and the first edge CL of display area A is greater than 0, a conventional display area A2 exists between the light-transmitting display area A1 and the first edge CL. For example, a circular light-transmitting display area A1 or a first sub-part 121 is not tangent to the first edge CL of display area A, and there is a certain gap between them. This gap, i.e., the gap between the first sub-part 121 and the first edge CL of display area A, indicates the existence of a conventional display area A2.

[0108] By adopting the above-described arrangement, the flat surface of the first sub-part 121 away from the back panel can be tangent to or have a certain distance from the first edge CL of the display area A1. This allows light passing through the light-transmitting display area A1 to be incident from the flat surface of the first sub-part 121, thereby preventing a significant change in the direction of light emitted from the surface of the first sub-part 121 near the back panel from the initial incident direction onto the flat surface. This also prevents the light-transmitting display area A of the display panel from changing the direction of propagation of external light.

[0109] For the display panel in the above embodiments, the structure of the display panel 10 can be varied and can be selected as needed; the present invention does not impose any limitations on this. Below, the present invention will describe two display panels with different structures.

[0110] In a first embodiment of the display panel 10, the minimum distance between the boundary of the surface of the first sub-part 121 on the side away from the back plate 100 and the boundary of the surface of the planarization layer 12 on the side away from the back plate 100 is greater than or equal to 0.

[0111] For example, such as Figure 2b and Figure 3a As shown, the minimum distance between the boundary of the surface of the first sub-part 121 away from the back plate 100 and the boundary of the surface of the planarization layer 12 away from the back plate 100 is greater than 0. The boundary of the surface of the planarization layer 12 away from the back plate 100 can be located within the peripheral region B. There is a certain distance between the boundary of the surface of the first sub-part 121 away from the back plate 100 and the boundary of the surface of the planarization layer 12 away from the back plate 100.

[0112] For example, such as Figure 2a and Figure 3b As shown, the minimum distance between the boundary of the surface of the first sub-part 121 away from the back plate 100 and the boundary of the surface of the planarization layer 12 away from the back plate 100 is equal to 0. That is, a certain point on the boundary of the surface of the first sub-part 121 away from the back plate 100 constitutes a certain point on the boundary of the surface of the planarization layer 12 away from the back plate 100.

[0113] By adopting the above-described arrangement, it is possible to avoid the small area of ​​the first sub-part 121, which would prevent external light from entering through the surface away from the back panel of the part of the planarization layer 12 other than the first sub-part 121 (such as the second side 122F of the second sub-part 122 connected to the first sub-part 121 mentioned below). This avoids the external light from undergoing a series of reflections or refractions before entering the light-transmitting display area A1, thereby preventing a significant change in the direction of light emitted from the first sub-part 121 from the initial incident direction on the planar surface, and preventing changes in the propagation direction of external light in the light-transmitting display area A of the display panel.

[0114] like Figure 2b and Figure 3a As shown, the planarization layer 12 further includes a second sub-part 122 connected to the first sub-part 121. The second sub-part 122 is located on the side of the first sub-part 121 near the first edge CL and overlaps with the first edge CL.

[0115] For example, the second sub-part 122 is located in the regular display area A2 and the peripheral area B in the display area A. The second sub-part 122 extends from the regular display area A2 of the display area A across the boundary (the boundary line formed by the first edge CL) between the display area A and the peripheral area B.

[0116] For example, such as Figure 3a As shown, the second sub-part 122 has a bottom surface, and a first side surface and a second side surface 122F connected to the bottom surface. The first side surface is in contact with the first sub-part 121. The angle γ between the second side surface 122F and the plane where the back plate 100 is located is an acute angle.

[0117] For example, the second side 122F of the second sub-part 122 is a surface that is inclined relative to the horizontal plane.

[0118] Therefore, the transition between the second side surface 122F of the second sub-part 122 and the surface of the planarization layer 12 away from the display substrate 11 can be smoother, thereby reducing stress impact and accumulation when the planarization layer is subjected to external force impact, and increasing the structural stability of the display panel 10.

[0119] In some examples, the angle γ between the second side 122F and the plane containing the back plate 100 ranges from 20° to 50°.

[0120] For example, the angle γ between the second side 122F and the plane of the back plate 100 can be 20°, 30°, 35°, 45° or 50°.

[0121] By adopting the above-described arrangement, the second side 122F is farther away from the first sub-part 121, and the second side 122F is farther away from the light-transmitting display area A1. This avoids the second side affecting the flatness of the surface of the first sub-part 121 away from the back plate 100, so that the external light incident on the light-transmitting display area A1 passes through the flat surface of the first sub-part 121 before entering the optical element, and avoids the external light passing through the second side 122F of the second sub-part 122 before entering the optical element, thereby avoiding affecting the function of the optical element.

[0122] In some examples, such as Figure 3a and Figure 3b As shown, the shape of the cross-sectional view of the second sub-part 122 along the direction perpendicular to the first edge CL and along the thickness direction of the display panel 10 includes: trapezoidal or triangular.

[0123] It is understandable that, since the side of the second sub-part 122 closest to the display substrate 11 is a non-flat surface, the trapezoid described above is not a trapezoid in the strict sense; that is, the lower base of the trapezoid is not a straight line in the strict sense. Similarly, the triangle described above is not a triangle in the strict sense; that is, the lower base of the triangle is not a straight line in the strict sense.

[0124] like Figure 3b As shown, when the cross-sectional view of the second sub-part 122 is triangular, the top of the second side of the second sub-part 122 is tangent to the boundary line of the light-transmitting display area A1.

[0125] like Figure 2b and Figure 3a As shown, when the cross-sectional view of the second sub-part 122 is trapezoidal, the second sub-part 122 has a top surface away from the back plate 100, which makes the second side surface farther away from the light-transmitting display area A1, thereby effectively avoiding affecting the imaging quality of the camera.

[0126] In some examples, the material of the planarization layer 12 includes photoresist.

[0127] For example, the photoresist is a transparent photoresist, which absorbs less light and has a high light transmittance. After external light passes through the planarization layer 12, the loss in the planarization layer formed by the photoresist is minimal, ensuring that sufficient external light exits from the planarization layer and enters the optical element, thereby avoiding affecting the amount of light received by the optical element and its function.

[0128] In some examples, such as Figure 3a and Figure 3b As shown, the display panel 10 further includes: a first inorganic encapsulation layer 13 located between the display substrate 11 and the planarization layer 12; and a second inorganic encapsulation layer 14 located on the side of the planarization layer 12 away from the display substrate 11. The first inorganic encapsulation layer 13, the planarization layer 12, and the second inorganic encapsulation layer 14 form a thin film encapsulation layer 15.

[0129] For example, the display panel 10 further includes at least one barrier 17 located in the peripheral area B. The barrier 17 surrounds the planarization layer 12, and the orthographic projection of the barrier 17 on the display substrate 11 does not overlap with the orthographic projection of the planarization layer 12 on the display substrate 11. The first inorganic encapsulation layer 13 and the second inorganic encapsulation layer 14 cover the barrier 17.

[0130] For example, the first inorganic encapsulation layer 13 covers the surface of the multiple light-emitting devices 200 away from the substrate 101, thereby isolating the light-emitting devices 200 from external water and oxygen and preventing water and oxygen from affecting the lifespan of the light-emitting devices 200.

[0131] For example, the planarization layer 12 can flatten the light-emitting side of the display panel 10, thereby avoiding uneven thickness of the display panel 10 and affecting the user experience.

[0132] For example, the second inorganic encapsulation layer 14 covers the planarization layer 12, wraps the edge of the planarization layer 12, enhances the isolation effect of the light-emitting device 200 from external water and oxygen, further improves the encapsulation effect of the thin film encapsulation layer 15, improves the lifespan of the light-emitting device 200, and thus improves the lifespan of the display panel 10.

[0133] For example, a retaining wall 17 can be set up in the surrounding area B, or two or more retaining walls 17 can be set up.

[0134] For example, the boundary line of the orthographic projection of the barrier 17 on the display substrate 11 may partially coincide with the boundary line of the orthographic projection of the planarization layer 12 on the display substrate 11. The boundary line of the orthographic projection of the barrier 17 on the display substrate 11 and the boundary line of the orthographic projection of the planarization layer 12 on the display substrate 11 may also have a certain distance between them.

[0135] For example, such as Figure 2b As shown, the barrier 17 is a ring-shaped structure with a certain width, surrounding the outside of the planarization layer 12. There is a certain gap between the boundary line of the orthographic projection of the barrier 17 on the display substrate 11 and the boundary line of the orthographic projection of the planarization layer 12 on the display substrate 11.

[0136] like Figure 3a As shown, the barrier 17 has a side surface and a top surface, and a first inorganic encapsulation layer 13 and a second inorganic encapsulation layer 14 cover the side surface and top surface of the barrier 17.

[0137] The barrier 17 is used to define the boundary of the planarization layer, confining the planarization layer 12 to the side of the barrier 17 near the display area A, to avoid encapsulation failure and thus avoid affecting the lifespan of the light-emitting device 200.

[0138] In an embodiment of the second display panel 10, such as Figure 3c As shown, the planarization layer 12 includes: a first sub-planarization layer 123 disposed on one side of the display substrate 11, an adhesive layer 124 disposed on the side of the first sub-planarization layer 123 away from the display substrate 11, and a second sub-planarization layer 125 disposed on the side of the adhesive layer 124 away from the display substrate 11.

[0139] The adhesive layer 124 is used to bond the first sub-planarization layer 123 to the second sub-planarization layer 125.

[0140] The surface of the second sub-planarization layer 125 away from the display substrate 11 is a flat surface. In the first sub-planarization layer 123, the surface away from the display substrate 11 and located in the light-transmitting display area A1 is a first curved surface S11. In the second sub-planarization layer 125, the surface close to the display substrate 11 and located in the light-transmitting display area A1 is a second curved surface S12. The center of curvature of the first curved surface S11 and the center of curvature of the second curved surface S12 are located on opposite sides of the adhesive layer 124.

[0141] For example, the first arc surface S11 protrudes in a direction away from the display substrate 11, and the center of curvature of the first arc surface S11 is on the side of the adhesive layer 124 close to the display substrate 11. The second arc surface S12 protrudes in a direction close to the display substrate 11, and the center of curvature of the second arc surface S12 is on the side of the adhesive layer 124 away from the display substrate 11.

[0142] Using the above configuration, external light enters the second sub-planarization layer 125 from the flat surface on the side away from the display substrate 11. At the second arc surface S12 of the second sub-planarization layer 125 (i.e., the contact interface between the second sub-planarization layer 125 and the adhesive layer 124), a first refraction occurs, causing the external light to deviate from the main optical axis of the camera, for example, deflecting to the right. This external light continues forward, passing through the adhesive layer 124, and enters the first arc surface S11 in the first sub-planarization layer 123, where a second refraction occurs. Since the center of curvature of the first arc surface S11 and the center of curvature of the second arc surface S12 are located on opposite sides of the adhesive layer 124, this refraction causes the external light to deflect to the left before exiting through the display substrate 11. Because the external light undergoes a first refraction at the second curved surface S12 and a second refraction at the first curved surface S11, the change between the incident direction of the external light on the surface of the second sub-planarization layer 125 away from the back plate and the exit direction of the external light from the first curved surface S11 (or the bottom surface of the display substrate 11) is small. In other words, the propagation direction of the external light from the surface of the planarization layer (or the second sub-planarization layer 125) away from the back plate to its exit from the surface of the planarization layer near the back plate remains almost unchanged. Therefore, when the display panel 10 is applied to the display device 1, the propagation direction of the external light after passing through the second sub-planarization layer 125, the adhesive layer, and the first sub-planarization layer 123 in the planarization layer is almost undeflected, allowing the external light to be collected by the optical element without deviating from the principal optical axis of the optical element, thereby avoiding affecting the function of the optical element.

[0143] For example, when the aforementioned optical element is a camera, it allows external light to be captured by the camera with almost no deviation from the camera's principal optical axis. This reduces or even eliminates the risk of diffraction distortion in images captured by the camera using this external light, eliminates the adverse effects of the aforementioned wedge plate structure on camera imaging, and thus improves the resolution and quality of the images captured by the camera.

[0144] In some examples, such as Figure 3c As shown, the angle α between the first arc surface S11 and the plane where the back plate 100 is located, and the angle β between the second arc surface S12 and the plane where the back plate 100 is located, are equal.

[0145] For example, the plane containing the back panel 100 is a horizontal plane.

[0146] By adopting the above-described configuration, the refraction angle of the first refraction at the second arc surface S12 of the external light incident on the optical element 30, such as the camera, is equal to the refraction angle of the second refraction at the first arc surface S11. Furthermore, the refraction direction of the first refraction is opposite to that of the second refraction. This ensures that the direction of the external light initially incident on the flat surface of the second sub-planarization layer 125 is almost unchanged from the direction of the external light exiting from the first arc surface S11. Consequently, the incident direction of the external light incident on the camera is almost identical to the principal optical axis of the camera. This reduces the risk of diffraction spot distortion in the images captured by the camera using the external light, eliminates the adverse effects of the wedge plate structure on camera imaging in the aforementioned implementation, and improves the resolution and quality of the images captured by the camera.

[0147] For example, the angle α between the first arc surface S11 and the plane containing the back plate 100, and the angle β between the second arc surface S12 and the plane containing the back plate 100 are both acute angles. This allows the incident external light to be refracted at smaller angles at the first arc surface S11 and the second arc surface S12, thereby reducing the risk of the incident light deviating from the camera's principal optical axis. This, in turn, reduces diffraction distortion in camera imaging, improving image quality.

[0148] In some examples, such as Figure 3c As shown, the first sub-planarization layer 123 and the second sub-planarization layer 125 are arranged symmetrically.

[0149] For example, the shape of the first sub-planarization layer 123 is the same as the shape of the second sub-planarization layer 125.

[0150] By adopting the above-described configuration, the refraction angle of the first refraction of external light incident on the optical element 30, such as a camera, at the second sub-planarization layer 125 is equal to the refraction angle of the second refraction at the first sub-planarization layer 123. Furthermore, the refraction direction of the first refraction is opposite to that of the second refraction. This ensures that the direction of the external light initially incident on the flat surface of the second sub-planarization layer 125 is almost unchanged from the direction of the external light exiting from the first sub-planarization layer 123. Consequently, the incident direction of the external light incident on the camera is almost identical to the principal optical axis of the camera. This reduces the risk of diffraction spot distortion in the images captured by the camera using the external light, eliminates the adverse effects of the wedge plate structure on camera imaging in the aforementioned implementation, and ultimately improves the resolution and quality of the images captured by the camera.

[0151] In some examples, such as Figure 3cAs shown, the surface of adhesive layer 124 near the back plate 100 has the same shape as the surface of the first sub-planar layer 123 away from the back plate 100. The surface of adhesive layer 124 away from the back plate 100 has the same shape as the surface of the second sub-planar layer 125 near the back plate 100.

[0152] Therefore, the surface of the adhesive layer 124 away from the back plate 100 and the surface of the second sub-planarization layer 125 near the back plate 100 can be in contact with each other, so that the first refraction of external light in the light path incident on the camera occurs at the interface between the adhesive layer 124 and the second sub-planarization layer 125, avoiding the lack of contact between the adhesive layer and the second sub-planarization layer 125, and preventing the external light from being refracted again on the surface of the adhesive layer 124 away from the back plate. Secondly, the surface shape of the adhesive layer 124 near the back plate 100 matches the surface shape of the first sub-planar layer 123 away from the back plate 100. This allows the refraction direction of the second refraction of external light on the surface of the adhesive layer 124 near the first sub-planar layer 123 in the optical path incident on the camera to be the same as the refraction direction of the second refraction on the surface of the first sub-planar layer 123 near the adhesive layer. This avoids the surface shape of the adhesive layer 124 near the back plate being dissimilar to the shape of the first sub-planar layer 123, preventing the external light from undergoing multiple refractions in different directions between the adhesive layer 124 and the first sub-planar layer 123. As a result, the incident direction of external light incident on the camera is almost the same as the principal optical axis of the camera, thereby reducing the risk of diffraction spot distortion in the images captured by the camera using this external light. This eliminates the adverse effects of the wedge plate structure on camera imaging in the above-mentioned implementation, thereby improving the resolution and quality of the images captured by the camera.

[0153] In some examples, such as Figure 3c As shown, the adhesive layer 124 includes a first adhesive portion 1241 and a second adhesive portion 1242 that are sequentially stacked along the direction away from the back plate 100, and the first adhesive portion 1241 and the second adhesive portion 1242 are symmetrically arranged.

[0154] For example, the surface of the first adhesive portion 1241 away from the back plate 100 is a flat surface, and the surface of the second adhesive portion 1242 near the back plate 100 is a flat surface, thereby facilitating the bonding of the first adhesive portion 1241 and the second adhesive portion 1242.

[0155] In some examples, the material of the first sub-planarization layer 123 is the same as the material of the second sub-planarization layer 125.

[0156] For example, the material of the first sub-planar layer 123 can be an organic material.

[0157] In some examples, such as Figure 3c As shown, the display panel 10 further includes: a first inorganic encapsulation layer 13 located between the display substrate 11 and the first sub-planarization layer 123; and a second inorganic encapsulation layer 14 located between the first sub-planarization layer 123 and the adhesive layer 124. The display panel 10 also includes at least one barrier 17 located in the peripheral region B. The first inorganic encapsulation layer 13, the first sub-planarization layer 123, and the second inorganic encapsulation layer 14 form a thin film encapsulation layer 15. The barrier 17 surrounds the planarization layer 12, and the orthographic projection of the barrier 17 on the display substrate 11 does not overlap with the orthographic projection of the planarization layer 12 on the display substrate 11. The first inorganic encapsulation layer 13 and the second inorganic encapsulation layer 14 cover the barrier 17.

[0158] For example, the first inorganic encapsulation layer 13 covers the surface of the multiple light-emitting devices 200 away from the substrate 101, thereby isolating the light-emitting devices 200 from external water and oxygen and preventing water and oxygen from affecting the lifespan of the light-emitting devices 200.

[0159] For example, the first sub-planarization layer 123 can flatten the light-emitting side of the display panel 10, thereby avoiding uneven overall thickness of the display panel 10 and affecting the user experience.

[0160] For example, the second inorganic encapsulation layer 14 covers the first sub-planarization layer 123, wraps the edge of the first sub-planarization layer 123, enhances the isolation effect of the light-emitting device 200 from external water and oxygen, further improves the encapsulation effect of the thin film encapsulation layer 15, improves the lifespan of the light-emitting device 200, and thus improves the lifespan of the display panel 10.

[0161] For example, a retaining wall 17 can be set up in the surrounding area B, or two or more retaining walls 17 can be set up.

[0162] For example, the barrier 17 is a ring-shaped structure with a certain width, surrounding the outside of the planarization layer 12. The boundary line of the orthographic projection of the barrier 17 onto the display substrate 11 does not overlap with the boundary line of the orthographic projection of the planarization layer 12 onto the display substrate 11. The barrier 17 has a side surface and a top surface, and the first inorganic encapsulation layer 13 and the second inorganic encapsulation layer 14 cover the side surface and top surface of the barrier 17.

[0163] The barrier 17 is used to limit the range of the material of the first sub-planarization layer 123, confining the first sub-planarization layer 123 to the side of the barrier 17 near the display area A, so as to avoid encapsulation failure and thus avoid affecting the lifespan of the light-emitting device.

[0164] Some embodiments of the present invention also provide a method for manufacturing a display panel 10, which can be used to prepare the display panel 10 described in any of the above embodiments. The display panel 10 has a display area A and a peripheral area B, with the peripheral area B surrounding the display area A; the display area A includes a light-transmitting display area A1 and a conventional display area A2; the light-transmitting display area A1 is located near a first edge of the display area A.

[0165] It is understood that the display area A can have various shapes, such as a circle or a rectangle. For a description of the features of the display area A and its surrounding area B, please refer to the descriptions in some of the embodiments described above; they will not be repeated here.

[0166] It is understandable that before manufacturing the display panel 10, it is necessary to plan the display panel 10, for example, to divide or plan the relative positions of the display area A, the peripheral area B, the light-transmitting display area A1 and the conventional display area A2, so as to form various structures (such as light-emitting devices, pixel circuits, shift registers and other structures) in the corresponding positions.

[0167] For example, such as Figure 1b and Figure 2a As shown, the display area A of the display panel 10 may include a light-transmitting display area A1 and a regular display area A2, and the light-transmitting display area A1 is located near the first edge CL of the display area A.

[0168] Of course, the shape of the light-transmitting display area A1 can vary, such as being circular, elliptical, or rectangular. Taking a circular light-transmitting display area A1 as an example, "the light-transmitting display area A1 is close to the first edge CL of the display area A" means that the distance between the light-transmitting display area A1 and the first edge CL of the display area A is relatively short, and the minimum spacing between the light-transmitting display area A1 and the first edge CL of the display area A is greater than or equal to 0. Specifically, the relative relationship between the light-transmitting display area A1 and the first edge CL can be referred to the descriptions in some of the embodiments above, and will not be repeated here.

[0169] In some embodiments, such as Figure 6a As shown, the manufacturing method of the display panel 10 includes steps S100 to S200.

[0170] S100, such as Figure 6b As shown, a display substrate 11 is provided; the display substrate 11 includes a back plate 100 and a plurality of light-emitting devices 200 located on the back plate 100; the plurality of light-emitting devices 200 are located in the display area A.

[0171] For example, the plurality of light-emitting devices 200 may be OLED (Organic Light Emitting Diode) light-emitting devices.

[0172] For example, among the multiple light-emitting devices 200, some light-emitting devices 200 may be located in the light-transmitting display area A1 of the display area A, and some light-emitting devices 200 may be located in the conventional display area A2 of the display area A.

[0173] For example, as described above, the backplane 100 includes a plurality of pixel circuits 102. The structure and positional relationship between the pixel circuits and the light-emitting devices can be found in the descriptions of some of the embodiments above, and will not be repeated here.

[0174] S200, such as Figure 6f and Figure 8g As shown, a planarization layer 12 is formed on the side of the plurality of light-emitting devices 200 away from the back plate 100; the planarization layer 12 includes a first sub-part 121 located in the light-transmitting display area A1, and the surface of the first sub-part 121 away from the display substrate 11 is a flat surface.

[0175] For example, there are various structures and formation processes for the planarization layer 12, which can be selected and set according to actual needs. Specifically, please refer to the description below.

[0176] For example, the surface of the first sub-part 121 away from the display substrate 11 can be a horizontal plane, and the distance between the surface of the first sub-part 121 away from the display substrate 11 and the display substrate 11 is the same.

[0177] The beneficial effects that can be achieved by the manufacturing method of the display panel 10 provided in some embodiments of the present invention are the same as the beneficial effects that can be achieved by the display panel provided in some embodiments above, and will not be repeated here.

[0178] For example, in step S200 of the above manufacturing method, the minimum distance between the first sub-part 121 of the formed planar layer 12 and the first edge of the display area A can be greater than or equal to 0. The minimum distance between the boundary of the surface of the first sub-part 121 away from the back plate 100 and the boundary of the surface of the planar layer 12 away from the back plate 100 is greater than or equal to 0.

[0179] In step S200 of the above-described fabrication method, due to factors such as errors in the planarization layer fabrication process, the surface of the first sub-part of the planarization layer away from the display substrate 11 is not a perfectly flat surface in the strict sense. For example, the distance between the surface of the first sub-part 121 of the formed planarization layer away from the display substrate 11 and the plane on which the display substrate 11 is located fluctuates within a range of 0 nm to 400 nm. In other words, the flatness of this flat surface is within the range of ±200 nm.

[0180] During the fabrication of the planarization layer, the fabrication process is generally controlled to ensure that the average thickness of the formed planarization layer 12 is 10 μm. In this case, the fluctuation range of the distance between the surface of the first sub-part 121 away from the display substrate 11 and the plane where the back plate 100 is located is negligible relative to the thickness of the planarization layer 12, and the impact of the above fluctuation range on the diffraction spot distortion and resolution reduction of the camera imaging is negligible. In other words, the first sub-part 121 within the above fluctuation range can still be considered as a flat surface.

[0181] For example, the distance between the surface of the first sub-part 121 away from the display substrate 11 and the plane on which the display substrate 11 is located can vary from 0 nm to 400 nm. That is, when the overall average thickness of the planarization layer 12 is 10 μm, the distance between the surface of the first sub-part 121 away from the display substrate 11 and the display substrate can be 10 μm (10 μm + 0 nm), 10.02 μm (10 μm + 20 nm), 10.10 μm (10 μm + 100 nm), 10.20 μm (10 μm + 200 nm), or 10.40 μm (10 μm + 400 nm).

[0182] In some embodiments, in S200 described above, forming a planarization layer 12 on the side of the plurality of light-emitting devices 200 away from the backplate 100 includes: S210a to S220a, as follows: Figure 7 As shown.

[0183] S210a, such as Figure 6d As shown, a flat thin film 12a is formed on one side of the display substrate 11.

[0184] For example, the material of the flat film 12a can be photoresist.

[0185] For example, the flat film 12a can be formed using a coating process. The surface of the flat film 12a formed by the coating process away from the display substrate 11 can be a flat surface.

[0186] S220a, such as Figures 6e to 6fAs shown, the planarization film 12a is exposed and developed to remove the portion of the planarization film covering the barrier 17 and the portion located outside the barrier 17, while retaining the portion of the planarization film surrounded by the barrier, forming a planarization layer 12; the planarization layer 12 also includes a second sub-part 122 connected to the first sub-part 121, the second sub-part 122 being located on the side of the first sub-part 121 near the first edge CL and overlapping with the first edge CL; the second sub-part 122 of the planarization layer 12 has a bottom surface, and a first side surface and a second side surface 122F connected to the bottom surface, the first side surface contacting the first sub-part 121; the angle γ between the second side surface 122F and the plane where the back plate 100 is located is an acute angle.

[0187] For example, when there are multiple retaining walls 17, the retaining wall 17 in S221a above refers to the retaining wall closest to the display area A, such as... Figure 6f In the middle, the leftmost retaining wall.

[0188] For example, in the flat membrane 12a, portions located on the side and top surfaces of the retaining wall 17, as well as portions located in the outer peripheral area B of the retaining wall 17, are removed. In the flat membrane 12a, portions located inside the retaining wall 17 are retained.

[0189] By using the above manufacturing method, the flat film 12a on the outside of the barrier 17 is removed, thereby avoiding the subsequent formation of the second inorganic encapsulation layer 14 and the film encapsulation layer 15, which would cause the encapsulation failure of the light-emitting device 200, and prevent water, oxygen and other substances from invading the light-emitting device 200 from the flat layer on the outside of the barrier 17, thus avoiding affecting the service life of the light-emitting device 200.

[0190] For example, such as Figures 6e to 6f As shown, a mask is placed on the side of the planar thin film 12a away from the back plate 100, and the planar thin film 12a is exposed and developed to form a planarization layer 12.

[0191] It is understood that the aforementioned mask includes light-transmitting and non-light-transmitting areas. For example, the exposure at the boundary between the light-transmitting and non-light-transmitting areas in the mask can be controlled, such that the second side 122F of the second sub-part 122 in the formed planar layer is a surface inclined relative to the horizontal plane.

[0192] For example, the included angle γ between the second side 122F and the plane containing the back plate 100 ranges from 20° to 50°.

[0193] For example, the angle γ between the second side 122F and the plane of the back plate 100 can be 20°, 30°, 35°, 45° or 50°.

[0194] By adopting the above-described arrangement, the second side 122F is farther away from the first sub-part 122E, and the second side 122F is farther away from the light-transmitting display area A1. This avoids the second side affecting the flatness of the surface of the first sub-part 121 away from the back plate 100, so that the external light incident on the light-transmitting display area A1 passes through the flat surface of the first sub-part 121 before entering the optical element, and avoids the external light passing through the second side 122F of the second sub-part 122 before entering the optical element, thereby avoiding affecting the function of the optical element.

[0195] In some examples, the shape of the second sub-part 122 formed after exposure and development by the mask can vary, for example, as... Figure 3a and Figure 3b As shown, the shape of the cross-sectional view of the second sub-part 122 along the direction perpendicular to the first edge CL and along the thickness direction of the display panel 10 includes: trapezoidal or triangular.

[0196] When the cross-sectional view of the second sub-part 122 is triangular, the top of the second side of the second sub-part 122 is tangent to the boundary line of the light-transmitting display area A1.

[0197] like Figure 2b and Figure 3a As shown, when the cross-sectional view of the second sub-part 122 is trapezoidal, the second sub-part 122 has a top surface away from the back plate 100, which makes the second side surface farther away from the light-transmitting display area A1, thereby effectively avoiding affecting the imaging quality of the camera.

[0198] In some examples, such as Figure 6f As shown, the display substrate 11 provided in S100 also includes at least one barrier 17 located in the peripheral area B.

[0199] For example, a retaining wall 17 can be set up in the surrounding area B, or two or more retaining walls 17 can be set up.

[0200] For example, such as Figure 2b As shown, the barrier 17 is a ring-shaped structure with a certain width, surrounding the outside of the planarization layer 12. The boundary line of the orthographic projection of the barrier 17 onto the display substrate 11 does not overlap with the boundary line of the orthographic projection of the planarization layer 12 onto the display substrate 11. The barrier 17 has a side surface and a top surface, and the first inorganic encapsulation layer 13 and the second inorganic encapsulation layer 14 cover the side surface and top surface of the barrier 17.

[0201] The barrier 17 is used to limit the range of the planarization layer material, confining the planarization layer 12 to the side of the barrier 17 near the display area A, to avoid encapsulation failure and thus avoid affecting the lifespan of the light-emitting device.

[0202] In some examples, the fabrication process also includes S209a before the patterning of the flat film in S210a.

[0203] S209a, as Figure 6c As shown, a first inorganic encapsulation layer 13 is formed on one side of the display substrate 11, and the first inorganic encapsulation layer 13 covers the barrier wall 17.

[0204] The first inorganic encapsulation layer 13 is made of an inorganic material. The first inorganic encapsulation layer 13 can be formed using a deposition process.

[0205] The barrier 17 has a side surface and a top surface, and a first inorganic encapsulation layer 13 covers the side surface and top surface of the barrier 17.

[0206] For example, the first inorganic encapsulation layer 13 covers the surface of the multiple light-emitting devices 200 away from the substrate 101, thereby isolating the light-emitting devices 200 from external water and oxygen and preventing water and oxygen from affecting the lifespan of the light-emitting devices 200.

[0207] In the above S220a, after patterning the flat film 12a, the manufacturing method further includes: S222a.

[0208] S222a, as Figure 6g As shown, a second inorganic encapsulation layer 14 is formed on the side of the planarization layer 12 away from the first inorganic encapsulation layer 13. The second inorganic encapsulation layer 14 covers the barrier wall 17. The first inorganic encapsulation layer 13, the planarization layer 12 and the second inorganic encapsulation layer 14 form a thin film encapsulation layer 15.

[0209] For example, the material of the second inorganic encapsulation layer 14 can be the same as the material of the first inorganic encapsulation layer 13. The forming process of the second inorganic encapsulation layer 14 can be the same as the forming process of the first inorganic encapsulation layer 13.

[0210] For example, the second inorganic encapsulation layer 14 covers all the sides and top surfaces of the barrier 17. Of course, the second inorganic encapsulation layer 14 also covers the planarization layer 12, wrapping the edges of the planarization layer 12, thereby enhancing the isolation effect of the light-emitting device 200 from external water and oxygen, further improving the encapsulation effect of the thin film encapsulation layer 15, increasing the lifespan of the light-emitting device 200, and thus increasing the lifespan of the display panel 10.

[0211] In other embodiments, the formation of a planarization layer 12 on the side of the plurality of light-emitting devices 200 away from the backplate 100 in S200 includes S210b to S260b, such as... Figure 8a As shown.

[0212] S210b, such as Figure 8bAs shown, a first sub-planarization layer 123 is printed on one side of the display substrate 11. The first sub-planarization layer 123 is located in the area enclosed by the baffle 17. In the first sub-planarization layer 123, the part of the surface on the side away from the display substrate 11 and located in the light-transmitting display area A1 is a first arc surface S11.

[0213] For example, the material of the first sub-planarization layer 123 can be an organic material. The process of forming the first sub-planarization layer 123 may include: firstly, forming a first sub-planarization layer film using an inkjet printing process, and then performing leveling and pre-curing on the first sub-planarization layer film to form the first sub-planarization layer 123.

[0214] S220b, such as Figure 8d As shown, a first adhesive portion 1241 is formed on the first arc surface S11 of the first sub-planar layer 123; the surface of the first adhesive portion 1241 away from the first sub-planar layer 123 is a flat surface.

[0215] For example, the first arc surface S11 protrudes in a direction away from the display substrate 11. The center of curvature of the first arc surface S11 is on the side of the adhesive layer 124 near the display substrate 11.

[0216] For example, the material of the first adhesive portion 1241 can be OCR adhesive (Optical Clear Resin) or OCA adhesive (Optically Clear Adhesive).

[0217] For example, the first adhesive portion 1241 can be formed using a coating process.

[0218] S230b, such as Figure 8e As shown, a base 18 is provided.

[0219] For example, the substrate 18 can provide support for the subsequently formed second sub-planar layer 125.

[0220] For example, the material of the substrate 18 described above can be glass.

[0221] S240b, such as Figure 8f As shown, a second sub-planarization layer 125 is printed on one side of the substrate 18; the surface of the second sub-planarization layer 125 near the substrate 18 is a flat surface, and the part of the second sub-planarization layer 125 away from the substrate 18 is a second arc surface S12.

[0222] For example, the material of the second sub-planarization layer 125 can be an organic material. The material of the second sub-planarization layer 125 can be the same as the material of the first sub-planarization layer 123.

[0223] The process for forming the second sub-planarization layer 125 may include: forming a second sub-planarization layer film using an inkjet printing process, and performing leveling and pre-curing on the second sub-planarization layer film.

[0224] The second arc surface S12 protrudes away from the substrate 18, and the center of curvature of the second arc surface S12 is on the side of the second sub-flat layer 125 near the substrate 18.

[0225] For example, the angle α between the first arc surface S11 and the plane where the back plate 100 is located, and the angle β between the second arc surface S12 and the plane where the base 18 is located, are equal.

[0226] For example, the angle α between the first arc surface S11 and the plane where the back plate 100 is located, and the angle β between the second arc surface S12 and the plane where the back plate 100 is located, are both acute angles.

[0227] For example, the same printing process and printing parameters can be used to simultaneously print organic materials to form the first sub-planarization layer 123 and the second sub-planarization layer 125. Therefore, the shape of the first sub-planarization layer 123 is the same as the shape of the second sub-planarization layer 125; the area of ​​the first sub-planarization layer 123 is the same as the area of ​​the second sub-planarization layer 125; the average thickness of the first sub-planarization layer 123 is the same as the average thickness of the second sub-planarization layer 125; and the thickness change rate of the first sub-planarization layer 123 from its center to its edge is the same as the thickness change rate of the second sub-planarization layer 125 from its center to its edge.

[0228] S250b, such as Figure 8g As shown, a second adhesive portion 1242 is formed on the second arc surface S12; the surface of the second adhesive portion 1242 away from the second sub-flat layer 125 is a flat surface.

[0229] For example, the material of the second adhesive portion 1242 can be the same as the material of the first adhesive portion 1241.

[0230] For example, the forming process of the second adhesive portion 1242 can be the same as that of the first adhesive portion 1241, and both can be formed by coating process.

[0231] For example, the first adhesive portion 1241 and the second adhesive portion 1242 may have the same shape.

[0232] S260b, such as Figure 8h As shown, the second adhesive portion 1242 is joined with the first adhesive portion 1241 to form an adhesive layer 124; the curvature center of the first arc surface S11 and the curvature center of the second arc surface S12 are located on both sides of the adhesive layer 124.

[0233] For example, after flipping the entire assembly consisting of the second adhesive portion 1242, the second sub-planar layer 125, and the substrate 18, it is joined with the first adhesive portion 1241, so that the first adhesive portion 1241 and the second adhesive portion 1242 form an adhesive layer 124.

[0234] By using the above manufacturing method to first form the first adhesive part and the second adhesive part, and then joining them to form the adhesive layer 124, the first adhesive part and the second adhesive part can be formed simultaneously, thereby saving preparation time; it can also make the first adhesive part and the second adhesive part form using the same process, simplifying the process flow of the display panel.

[0235] In the above-described S260b, after the second adhesive portion 1242 and the first adhesive portion 1241 are joined to form an adhesive layer 124, since the shape of the first sub-planarization layer 123 and the shape of the second sub-planarization layer 125 are the same, the first sub-planarization layer 123 and the second sub-planarization layer 125 are symmetrically arranged (e.g., ...). Figure 8h (As shown). Therefore, the angle of refraction of external light incident on the optical element 30, such as a camera, during the first refraction at the second sub-planarization layer 125 is equal to the angle of refraction during the second refraction at the first sub-planarization layer 123, and the direction of the first refraction is opposite to the direction of the second refraction. This ensures that the direction of the external light initially incident on the flat surface of the second sub-planarization layer 125 is almost unchanged from the direction of the external light exiting from the first sub-planarization layer 123, thereby avoiding any change in the propagation direction of the external light incident on the light-transmitting display area A1. When this display panel 10 is used in a display device, the external light can be collected by the optical element without deviating almost from the principal optical axis of the optical element, thus avoiding any impact on the function of the optical element.

[0236] In S260b described above, after the second adhesive portion 1242 is joined with the first adhesive portion 1241 to form an adhesive layer 124, the surface of the adhesive layer 124 away from the back plate 100 has the same shape as the surface of the second sub-planarization layer 125 near the back plate 100. This ensures that the first refraction of external light in the light path incident on the camera occurs at the interface between the adhesive layer 124 and the second sub-planarization layer 125, preventing the adhesive layer and the second sub-planarization layer 125 from not being in contact and avoiding further refraction of the external light on the surface of the adhesive layer 124 away from the back plate. Secondly, the surface shape of the adhesive layer 124 near the back plate 100 matches the surface shape of the first sub-planar layer 123 away from the back plate 100. This allows the refraction direction of the second refraction of external light on the surface of the adhesive layer 124 near the first sub-planar layer 123 in the optical path incident on the camera to be the same as the refraction direction of the second refraction on the surface of the first sub-planar layer 123 near the adhesive layer. This avoids the surface shape of the adhesive layer 124 near the back plate being dissimilar to the shape of the first sub-planar layer 123, preventing the external light from undergoing multiple refractions in different directions between the adhesive layer 124 and the first sub-planar layer 123. As a result, the incident direction of external light incident on the camera is almost the same as the principal optical axis of the camera, thereby reducing the risk of diffraction spot distortion in the images captured by the camera using this external light. This eliminates the adverse effects of the wedge plate structure on camera imaging in the above-mentioned implementation, thereby improving the resolution and quality of the images captured by the camera.

[0237] In the above-described S260b, after the second adhesive portion 1242 and the first adhesive portion 1241 are joined to form an adhesive layer 124, the first adhesive portion 1241 and the second adhesive portion 1242 are symmetrically arranged.

[0238] In the above manufacturing method, after the second adhesive part 1242 and the first adhesive part 1241 are joined in S260b to form an adhesive layer 124, the manufacturing method also includes S270b.

[0239] S270b, such as Figure 8i As shown, remove the substrate 18.

[0240] For example, the second adhesive portion 1242 is separated from the substrate 18, and the substrate 18 is removed.

[0241] Of course, the substrate 18 mentioned above can also be reused as a cover plate, so that the substrate 18 does not need to be removed after the planarization layer 12 is formed, thereby simplifying the preparation process and saving preparation costs.

[0242] In some examples, the display substrate 11 also has a peripheral region B surrounding the display area A; the display substrate 11 also includes at least one barrier 17 located in the peripheral region B.

[0243] In the above S210b, before the first sub-planarization layer 123 is printed on one side of the display substrate 11, the manufacturing method further includes S209b.

[0244] S209b, such as Figure 8c As shown, a first inorganic encapsulation layer 13 is formed on one side of the display substrate 11, and the first inorganic encapsulation layer 13 covers the barrier wall 17.

[0245] The first inorganic encapsulation layer 13 is made of an inorganic material. The first inorganic encapsulation layer 13 can be formed using a deposition process. The barrier 17 has sides and a top surface, and the first inorganic encapsulation layer 13 covers all sides and the top surface of the barrier 17.

[0246] For example, the first inorganic encapsulation layer 13 covers the surface of the multiple light-emitting devices 200 away from the substrate 101, thereby isolating the light-emitting devices 200 from external water and oxygen and preventing water and oxygen from affecting the lifespan of the light-emitting devices 200.

[0247] Before forming the first adhesive portion 1241 on the first arc surface S11 of the first sub-flat layer 123, the manufacturing method of the above-mentioned S220b further includes: S219b.

[0248] S219b, as Figure 8d As shown, a second inorganic encapsulation layer 14 is formed on the side of the first sub-planarization layer 123 away from the first inorganic encapsulation layer 13. The second inorganic encapsulation layer 14 covers the barrier wall 17. The first inorganic encapsulation layer 13, the first sub-planarization layer 123 and the second inorganic encapsulation layer 14 form a thin film encapsulation layer 15.

[0249] For example, the material of the second inorganic encapsulation layer 14 can be the same as the material of the first inorganic encapsulation layer 13. The forming process of the second inorganic encapsulation layer 14 can be the same as the forming process of the first inorganic encapsulation layer 13.

[0250] For example, the second inorganic encapsulation layer 14 covers the sides and top surface of the barrier 17. Of course, the second inorganic encapsulation layer 14 also covers the planarization layer 12, wrapping the edges of the planarization layer 12, thereby enhancing the effect of isolating external water and oxygen, further improving the encapsulation effect of the thin film encapsulation layer 15, increasing the lifespan of the light-emitting device 200, and thus increasing the lifespan of the display panel 10.

[0251] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, The display panel has a display area; the display area includes a light-transmitting display area and a regular display area; the light-transmitting display area is located near a first edge of the display area; The display panel includes: A display substrate, the display substrate including a back plate and a plurality of light-emitting devices located on the back plate; the plurality of light-emitting devices being located in the display area; and, A planarization layer located on the side of the plurality of light-emitting devices away from the back panel; the planarization layer includes a first sub-section located in the light-transmitting display area; the surface of the first sub-section away from the back panel is a flat surface; the planarization layer includes: a first sub-planarization layer disposed on one side of the display substrate, an adhesive layer disposed on the first sub-planarization layer away from the display substrate, and a second sub-planarization layer disposed on the adhesive layer away from the display substrate; the surface of the second sub-planarization layer away from the display substrate is a flat surface. In the first sub-planarization layer, the surface on the side away from the display substrate and located in the light-transmitting display area is a first arc surface; in the second sub-planarization layer, the surface on the side close to the display substrate and located in the light-transmitting display area is a second arc surface; the curvature center of the first arc surface and the curvature center of the second arc surface are respectively located on both sides of the adhesive layer.

2. The display panel according to claim 1, characterized in that, The minimum distance between the light-transmitting display area and the first edge is greater than or equal to 0.

3. The display panel according to claim 2, characterized in that, When the minimum distance between the light-transmitting display area and the first edge is greater than 0, there exists a conventional display area between the light-transmitting display area and the first edge.

4. The display panel according to claim 1, characterized in that, The material of the planarization layer includes photoresist.

5. The display panel according to claim 1, characterized in that, The angle between the first arc surface and the plane where the back plate is located, and the angle between the second arc surface and the plane where the back plate is located, are equal.

6. The display panel according to claim 1, characterized in that, The first sub-planarization layer and the second sub-planarization layer are arranged symmetrically.

7. The display panel according to claim 1, characterized in that, The adhesive layer has the same shape on the side surface near the back plate as the first sub-flat layer on the side surface away from the back plate; The adhesive layer on the side away from the back plate has the same shape as the second sub-flat layer on the side near the back plate.

8. The display panel according to claim 1, characterized in that, The adhesive layer includes a first adhesive portion and a second adhesive portion that are sequentially stacked along a direction away from the back plate, and the first adhesive portion and the second adhesive portion are symmetrically arranged.

9. The display panel according to claim 1, characterized in that, The material of the first sub-planarization layer is the same as the material of the second sub-planarization layer.

10. The display panel according to any one of claims 1 to 9, characterized in that, The display panel also has a peripheral area surrounding the display area; The display panel also includes: The first inorganic encapsulation layer is located between the display substrate and the first sub-planarization layer; A second inorganic encapsulation layer is located between the first sub-planarization layer and the adhesive layer; the first inorganic encapsulation layer, the first sub-planarization layer, and the second inorganic encapsulation layer form a thin-film encapsulation layer; and... At least one barrier wall is located in the peripheral area; the barrier wall surrounds the planarization layer, and the orthographic projection of the barrier wall on the display substrate does not overlap with the orthographic projection of the planarization layer on the display substrate, and the first inorganic encapsulation layer and the second inorganic encapsulation layer cover the barrier wall.

11. The display panel according to claim 1, characterized in that, The display panel also has a peripheral area surrounding the display area; The backplate includes: a plurality of pixel circuits; the plurality of pixel circuits includes a plurality of first pixel circuits and a plurality of second pixel circuits; The plurality of light-emitting devices include: a plurality of first light-emitting devices located in the light-transmitting display area, and a plurality of second light-emitting devices located in the conventional display area; the first pixel circuit is electrically connected to the first light-emitting devices; the second pixel circuit is electrically connected to the second light-emitting devices; Wherein, the first pixel circuit is located in the conventional display area, and / or the first pixel circuit is located in the peripheral area; the second pixel circuit is located in the conventional display area.

12. The display panel according to claim 1, characterized in that, The backplate includes: a plurality of pixel circuits; the plurality of pixel circuits includes a plurality of first pixel circuits and a plurality of second pixel circuits; The plurality of light-emitting devices include: a plurality of first light-emitting devices located in the light-transmitting display area, and a plurality of second light-emitting devices located in the conventional display area; the first pixel circuit is electrically connected to the first light-emitting devices; the second pixel circuit is electrically connected to the second light-emitting devices; The second pixel circuit is located in the conventional display area; The first pixel circuit is located in the light-transmitting display area, and the first light-emitting device covers the first pixel circuit that is electrically connected to it.

13. A display device, characterized in that, The display device includes: a display panel as described in any one of claims 1 to 12; A cover plate located on the light-emitting side of the display panel; and, An optical element located on the non-light-emitting side of the display panel and in the light-transmitting display area of ​​the display panel.

Images