Display panel and display device

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises: an array substrate; a first electrode layer located on one side of the array substrate, the first electrode layer comprising first electrodes arranged at intervals and a first reflection layer arranged in a stack with the first electrode layer; a pixel definition layer located on a side of the first electrode layer away from the array substrate, the pixel definition layer comprising a plurality of pixel openings and a separation portion located between two adjacent pixel openings, at least part of the first electrodes being located in the pixel openings; a second reflection layer comprising reflection portions arranged at intervals, the reflection portions being located on a side of the separation portion away from the array substrate; and a compensation layer located on a side of the first reflection layer close to the array substrate, the compensation layer being used to reduce the height difference between the surface of the side of the first reflection layer away from the array substrate and the surface of the side of the second reflection layer away from the array substrate. The service life of the device is ensured, and the display effect and the mirror effect of the device are improved.

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 continuous development of display technology, display devices are becoming increasingly diversified. Combining OLED (Organic Light-Emitting Diode) with mirrors allows display devices to not only display images but also function as mirrors. This opens up applications for these devices not only in homes, shopping malls, advertising, and beauty products, but also in automotive rearview mirrors, demonstrating significant development potential. However, the display and mirror effects of current mirror display devices still require improvement. Summary of the Invention

[0003] This invention provides a display panel and display device to ensure the lifespan of the device while improving its display effect and mirror effect.

[0004] According to one aspect of the present invention, a display panel is provided, comprising:

[0005] Array substrate;

[0006] A first electrode layer is located on one side of the array substrate. The first electrode layer includes first electrodes spaced apart and a first reflective layer stacked with the first electrode layer.

[0007] A pixel definition layer is located on the side of the first electrode layer opposite to the array substrate. The pixel definition layer includes a plurality of pixel openings and an isolation portion located between two adjacent pixel openings. At least a portion of the first electrode is located within the pixel opening.

[0008] A second reflective layer, comprising spaced-apart reflective portions located on the side of the isolation portion facing away from the array substrate; and

[0009] A compensation layer is located on the side of the first reflective layer closest to the array substrate. The compensation layer is used to reduce the height difference between the surface of the first reflective layer away from the array substrate and the surface of the second reflective layer away from the array substrate.

[0010] Optionally, the vertical projection of the pixel opening on the array substrate is located within the orthographic projection of the first electrode on the array substrate; the boundary of the orthographic projection of the reflective portion on the array substrate overlaps with the boundary of the orthographic projection of the adjacent first reflective layer on the array substrate, or the distance between the orthographic projection of the reflective portion on the array substrate and the orthographic projection of the adjacent first reflective layer on the array substrate is equal to zero.

[0011] The orthographic projection of the reflective portion on the array substrate and the orthographic projection of the pixel opening on the array substrate do not overlap.

[0012] Optionally, the compensation layer is located on the side of the first electrode close to the driving backplane array substrate, and / or is located inside the first electrode and wrapped by the first electrode;

[0013] Preferably, the height difference between the surface of the first electrode away from the array substrate and the surface of the isolation portion away from the array substrate is less than 1.5 μm.

[0014] Optionally, when the compensation layer is located on the side of the first electrode closer to the array substrate;

[0015] The material of the compensation layer includes organic adhesive;

[0016] Preferably, the thickness of the compensation layer in the direction perpendicular to the array substrate ranges from 0.8 μm to 1 μm.

[0017] Optionally, when the compensation layer is located within the first electrode and is wrapped by the first electrode;

[0018] The material of the compensation layer is the same as the material of the film layer in the first electrode;

[0019] Preferably, the thickness of the compensation layer is less than 0.1 μm in the direction perpendicular to the array substrate.

[0020] Optionally, the first electrode includes a first transparent conductive layer and a second transparent conductive layer, and the first reflective layer is located between the first transparent conductive layer and the second transparent conductive layer; the first transparent conductive layer is disposed close to the array substrate relative to the second transparent conductive layer;

[0021] The compensation layer is adjacent to the first transparent conductive layer and is made of the same material as the first transparent conductive layer.

[0022] Alternatively, the compensation layer may be adjacent to the first reflective layer and made of the same material as the first reflective layer.

[0023] Optionally, the upper surface of the portion of the first electrode located within the pixel opening has a curvature.

[0024] Optionally, the display panel further includes:

[0025] An encapsulation layer is located on the side of the pixel definition layer away from the array substrate;

[0026] The second reflective layer is located on the side of the encapsulation layer away from the array substrate;

[0027] Preferably, the encapsulation layer includes a first encapsulation layer and a second encapsulation layer sequentially disposed along the side of the pixel definition layer away from the array substrate, and the second reflective layer is located on the side of the second encapsulation layer away from the array substrate;

[0028] Preferably, the encapsulation layer further includes a third encapsulation layer, which is located between the first encapsulation layer and the second encapsulation layer.

[0029] According to another aspect of the present invention, a display device is provided, comprising the display panel described in any embodiment of the present invention.

[0030] The technical solution provided by this invention reuses at least one of the first electrode layers on the array substrate as a first reflective layer with reflective properties, and provides a reflective portion on the side of the pixel definition layer away from the array substrate; the first reflective layer and the reflective portion are used to form a complete reflective mirror surface, realizing the mirror function of the mirror display panel, replacing the entire mirror reflective layer of the mirror display panel in the prior art; a compensation layer is provided on the side of the first reflective layer close to the array substrate, which reduces the height difference between the surface of the second reflective layer away from the array substrate and the surface of the first reflective layer away from the array substrate, so that the height of the upper surface of the first reflective layer is close to the height of the upper surface of the second reflective layer, reducing the impact of external forces. The optical path difference after reflection from the upper surfaces of the first and second reflective layers reduces reflectivity fluctuations and screen diffraction, thus improving image clarity. This addresses the issue of significant screen diffraction caused by forming the entire mirror reflective layer on an uneven surface due to manufacturing limitations, improving the mirror effect of mirror display panels and devices. Furthermore, since the first reflective layer is located on the non-light-emitting side of the display module, it does not affect the module's transmittance, achieving both a better mirror effect and optimal screen display performance. It eliminates the need to increase the light source intensity of the display module to improve display quality, reducing optical power loss and ensuring the lifespan of the display panel.

[0031] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a cross-sectional view of the structure of a mirror display panel provided in the prior art;

[0034] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0035] Figure 3 yes Figure 2 A cross-sectional view of the structure along section line CC1 shown;

[0036] Figure 4 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram illustrating the positional relationship between a first reflective layer and a second reflective layer according to an embodiment of the present invention;

[0038] Figure 6 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0039] Figure 7 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0040] Figure 8 This is an enlarged view of the junction between the first electrode and the isolation portion provided in an embodiment of the present invention;

[0041] Figure 9 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0042] Figure 10 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] As mentioned in the background technology, OLEDs possess advantages such as fast response speed, low operating voltage, self-emissive nature, thinness, wide operating temperature range, flexibility, high contrast, and simple manufacturing process, and have been widely used in mobile phones, displays, and other mobile devices. With increasingly sophisticated user demands and continuous development of display technology, display devices are becoming increasingly diversified. Combining OLEDs with mirror displays allows these devices to not only display images but also function as mirrors. This opens up applications beyond home furnishings, shopping malls, advertising, and beauty products, extending to areas like automotive rearview mirrors, demonstrating significant development potential.

[0047] However, current mirror display panels and devices still need improvement. For mirror displays, reflectivity is one of the most important indicators affecting their function. Increasing reflectivity and reducing diffuse reflection are important ways to improve the mirror effect of display devices. Figure 1 This is a cross-sectional view of the structure of a mirror display panel provided in the prior art, for reference. Figure 1 Current mirror display panels include a single layer of mirror-reflective layer 3, which functions as a mirror. However, the mirror-reflective layer 3 has high reflectivity, which reduces the overall transmittance and contrast of the light-emitting structure 2. This necessitates increasing the light source intensity of the display module to improve the display effect, but this undoubtedly leads to severe optical power loss and a reduced lifespan. Furthermore, due to limitations in the manufacturing process, the mirror-reflective layer is formed on an uneven surface, resulting in an uneven surface. Figure 1An example is drawn showing that there is a large height difference between the specular reflection layer 3 located above the pixel definition layer 1 and the specular reflection layer 3 located above the anode 2 in the light-emitting structure. This results in a large fluctuation in the reflectivity of the specular reflection layer, a significant screen diffraction effect, and affects the display effect and mirror effect of the mirror display panel and mirror display device.

[0048] Therefore, embodiments of the present invention provide a display panel. Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention; Figure 3 yes Figure 2 The structural cross-section along section line CC1 shown is for reference. Figure 2 and Figure 3 The display panel includes:

[0049] Array substrate 10;

[0050] The first electrode layer is located on one side of the array substrate 10. The first electrode layer includes first electrodes 20 disposed at intervals and a first reflective layer 212 stacked with the first electrodes 20.

[0051] A pixel definition layer is located on the side of the first electrode layer away from the array substrate 10. The pixel definition layer includes a plurality of pixel openings and an isolation portion 61 located between two adjacent pixel openings. At least a portion of the first electrode 20 is located within the pixel opening.

[0052] The second reflective layer includes spaced-apart reflective portions 71 located on the side of the isolation portion 61 facing away from the array substrate 10; and

[0053] The compensation layer 80 is located on the side of the first reflective layer 212 that is close to the array substrate 10. The compensation layer 80 is used to reduce the height difference between the surface of the second reflective layer away from the array substrate 10 and the surface of the first reflective layer 212 away from the array substrate 10.

[0054] Specifically, the display panel includes a display area and a non-display area. The non-display area includes, for example: Figure 2The diagram shows a scan driver 100, a light-emitting driver 200, a data driver 300, and a timing controller 400. The display area includes an array substrate 10 and a light-emitting structure layer disposed on the array substrate 10. The array substrate 10 refers to a film layer structure that can provide driving signals to the mirror display panel and play a role in buffering, protection, or support, and includes a substrate and a driving circuit layer disposed on the substrate. The driving circuit layer includes multiple circuit units, multiple data signal lines (D1 to Dn), multiple scan signal lines (S1 to Sm), multiple light-emitting control signal lines (E1 to Eo), and multiple power supply lines. The data driver 300 is connected to multiple data signal lines (D1 to Dn), the scan driver 100 is connected to multiple scan signal lines (S1 to Sm), and the light-emitting driver 200 is connected to multiple light-emitting signal lines (E1 to Eo).

[0055] The light-emitting structure layer includes multiple light-emitting structures. A circuit unit and the light-emitting structures connected to the circuit unit constitute a sub-pixel. The display area may include multiple sub-pixels Pxij, where i and j can be natural numbers. The circuit unit may include at least a pixel driving circuit, which is connected to a scan signal line, a light emission control signal line, and a data signal line, respectively. The data signal line is configured to provide data signals to the pixel driving circuit, the scan signal line is configured to provide scan signals to the pixel driving circuit, and the light emission control signal line is configured to provide light emission control signals to the pixel driving circuit, thereby realizing the light emission control of the light-emitting structures.

[0056] In an exemplary embodiment, the timing controller 400 can provide grayscale values ​​and control signals of specifications suitable for the data driver 300, clock signals, scan start signals, etc. of specifications suitable for the scan driver 100, and clock signals, transmit stop signals, etc. of specifications suitable for the light-emitting driver 200. The data driver 300 can use the grayscale values ​​and control signals received from the timing controller 400 to generate data voltages to be provided to data signal lines D1, D2, D3, ..., Dn. For example, the data driver 300 can sample grayscale values ​​using a clock signal and apply data voltages corresponding to the grayscale values ​​to data signal lines D1 to Dn on a pixel-by-pixel basis, where n can be a natural number. The scan driver 100 can receive clock signals, scan start signals, etc., from the timing controller 400 to generate scan signals to be provided to scan signal lines S1, S2, S3, ..., Sm, where m can be a natural number. The light-emitting driver 200 can generate a transmission signal that will be provided to the light-emitting control signal lines E1, E2, E3, ... and Eo by receiving clock signals, transmit stop signals, etc. from the timing controller, where o can be a natural number.

[0057] The surface of the array substrate 10 includes a plurality of first electrodes 20 and a pixel definition layer. Each electrode 20 may be composed of a plurality of first electrode sublayers stacked sequentially. Figure 3 The first electrode 20 is illustrated in the diagram. The light-emitting structure includes the first electrode 20 in the array substrate 10, a light-emitting layer 30 and a second electrode 40 sequentially stacked on the first electrode 20. The first electrode 20 can be the anode corresponding to each light-emitting structure in the light-emitting structure layer, and the second electrode 40 can be the cathode corresponding to each light-emitting structure. The first electrode 20 may include a transparent electrode layer (211 / 213) formed of a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium oxide (In2O3). A first reflective layer 212 is stacked with the first electrode 20, and the material of the first reflective layer 212 includes reflective conductive materials such as Ag, Mg, or Al. The first reflective layer 212 may be disposed within the first electrode 20 and enclosed by the first electrode 20.

[0058] The pixel definition layer includes multiple pixel openings corresponding one-to-one with the first electrode 20, with each pixel opening exposing the corresponding first electrode 20; the light-emitting layer 30 is located within the pixel openings. The light-emitting layer 30 can be formed of low-molecular-weight organic materials or high-molecular-weight organic materials. The light-emitting layer 30 includes an organic light-emitting layer, and may also include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL). However, in addition to the organic reflective layer, the light-emitting layer 30 may include various other functional layers.

[0059] The second electrode 40 can be a single, continuous electrode layer, serving as a shared electrode layer for the entire light-emitting structure. The material of the second electrode 40 can include metallic materials such as Ag, Mg, or Al. Because the second electrode 40 is relatively thin, it has minimal impact on the normal light emission of the light-emitting structure. The pixel definition layer is electrically insulating and fills the space between two adjacent first electrodes 20, providing insulation between them. The material of the pixel definition layer can include one or more of the following: polyimide (PI), polyamide, benzocyclobutene (BCB), acrylic resin, phenolic resin, or photoresist.

[0060] A reflective portion 71 is provided on the side of the isolation portion 61 away from the array substrate 10. The material of the reflective portion 71 may include at least one of Ag, Mg, and Al. The first reflective layer 212 and the reflective portion 71 are used to form a reflective mirror surface to realize the mirror function of the mirror display panel. Since the first reflective layer 212 is located on the non-light-emitting side of the display module, it will not affect the transmittance of the light-emitting structure in the display module. While achieving a better mirror effect, the display effect of the screen is also taken into account. There is no need to increase the light source intensity of the display module to improve the display effect, which greatly reduces the optical power loss of the device and ensures the service life of the mirror display panel. In addition, the reflective portion 71 and the first reflective layer 212 are two reflective layers at different positions in the mirror display panel, which divides the one continuous mirror reflective layer of the existing mirror display panel into segments. The formation surfaces of the reflective portion 71 and the first reflective layer 212 are relatively flat. A compensation layer 80 is provided on the side of the first reflective layer 212 near the array substrate 10. The compensation layer 80 reduces the height difference between the surface of the reflective part 71 away from the array substrate 10 and the surface of the first reflective layer 212 away from the array substrate 10, so that the height of the upper surface of the reflective part 71 is close to the height of the upper surface of the first reflective layer 212. This reduces the optical path difference after the external incident light is reflected from the upper surface of the reflective part 71 and the upper surface of the first reflective layer 212, thereby reducing the reflectivity fluctuation, reducing the screen diffraction effect, and improving the image clarity. Therefore, it can improve the problem in the prior art where the entire mirror reflective layer is formed on an uneven surface due to the limitations of the manufacturing process, resulting in obvious screen diffraction effect, thereby improving the mirror effect and display effect of the display panel.

[0061] Furthermore, in the existing technology, after the reflective layer is patterned to form a second reflective layer, it will not affect the transmittance of the light-emitting structure in the display module. While achieving a better mirror effect, it also takes into account the display effect of the screen. There is no need to increase the light source intensity of the display module to improve the display effect, which greatly reduces the optical power loss of the device and ensures the service life of the mirror display panel.

[0062] Optional, Figure 4 This is a cross-sectional view of another display panel provided in an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the positional relationship between a first reflective layer and a second reflective layer according to an embodiment of the present invention. (Refer to...) Figure 4 and Figure 5 The pixel definition layer includes an isolation portion 61 located between two adjacent pixel openings 62;

[0063] The orthographic projection of the pixel opening 62 on the array substrate 10 is located within the orthographic projection of the first electrode 20 on the array substrate 10; the boundary of the orthographic projection of the reflective portion 71 on the array substrate 10 overlaps with the boundary of the orthographic projection of the adjacent first reflective layer 212 on the array substrate 10, or the distance between the orthographic projection of the reflective portion 71 on the array substrate 10 and the orthographic projection of the adjacent first reflective layer 212 on the array substrate 10 is equal to zero.

[0064] Specifically, the orthographic projection of the pixel opening 62 onto the array substrate 10 lies within the orthographic projection of the first electrode 20 onto the array substrate 10. That is, the extension length of the first electrode 20 is greater than the wavefront of the pixel definition layer (this can be achieved by increasing the size of the first electrode 20). Ultimately, this achieves the effect that, in the direction perpendicular to the array substrate 10, the boundary of the reflective portion 71 covers the boundary of the first electrode 20, or the distance between it and the boundary of the first reflective layer 212 is zero, ensuring that the reflective mirror surface formed by the reflective portion 71 and the first reflective layer 212 has a complete reflective effect. This avoids gaps between the vertical projection of the reflective portion 71 onto the array substrate 10 and the vertical projection of the adjacent first reflective layer 212 onto the array substrate 10, which would affect the reflective effect of the reflective mirror surface formed by the reflective portion 71 and the first reflective layer 212.

[0065] Furthermore, considering the opaque nature of the second reflective layer, if the linewidth of the reflective portion 71 is equal to the width of the isolation portion 61, it will block light emission from a wide viewing angle. In this embodiment, the area of ​​the pixel opening 62 in the pixel definition layer is smaller than the area of ​​the first electrode 20, allowing the first electrode 20 to extend into the isolation portion 61. This ensures that the boundary of the reflective portion 71 is jointly defined by the pixel definition layer and the first electrode 20. The width of the reflective portion 71 can be smaller than the width of the isolation portion 61, ensuring the reflective effect of the mirror surface formed by the reflective portion 71 and the first reflective layer 212 while preventing the first reflective layer 212 from blocking light emission from the display panel from a wide viewing angle.

[0066] Optionally, the orthographic projection of the reflective portion 71 on the array substrate 10 and the orthographic projection of the pixel opening 62 on the array substrate 10 do not overlap. This prevents the reflective portion 71 from affecting the normal light emission of the sub-pixel.

[0067] Optional, Figure 6 This is a cross-sectional view of another mirror display panel provided in an embodiment of the present invention (the compensation layer is located inside the first electrode, and the material is the same as the transparent conductive layer). Figure 7 This is a cross-sectional view of another mirror display panel provided in an embodiment of the present invention (the compensation layer is located inside the first electrode, and the material is the same as the first reflective layer), see reference. Figures 6-7 ,as well as Figure 2 The compensation layer 80 is located on the side of the first electrode 20 near the array substrate 10, and / or is located inside the first electrode 20 and is wrapped by the first electrode 20.

[0068] Specifically, because the thickness of the isolation portion 61 differs significantly from the thickness of the first electrode 20, the height difference between the surface of the first reflective layer 212 in the first electrode 20 away from the array substrate 10 and the surface of the reflective portion 71 in the isolation portion 61 away from the array substrate 10 is substantial. By providing the compensation layer 80, the height of the first electrode 20 can be adjusted, thereby reducing the height difference between the surface of the first reflective layer 212 away from the array substrate 10 and the surface of the isolation portion 61 away from the array substrate 10. This further reduces the height difference between the surface of the first reflective layer 212 away from the array substrate 10 and the surface of the reflective portion 71 in the isolation portion 61 away from the array substrate 10, weakening the screen diffraction effect and improving the mirror effect of the mirror display device.

[0069] refer to Figure 2 The compensation layer 80 can be located on the side of the first electrode 20 closest to the array substrate 10. Alternatively, refer to... Figure 6 and Figure 7 The compensation layer 80 is located within and enclosed by the first electrode 20. Alternatively, the compensation layer 80 is located on the side of the first electrode 20 closest to the array substrate 10, and is enclosed by the first electrode 20 (not shown). It should be noted that when the compensation layer 80 is located within the first electrode 20, the position of the compensation layer 80 must be sufficient to raise the height of the upper surface of the first reflective layer 212.

[0070] Optionally, the height difference between the surface of the first electrode 20 away from the array substrate 10 and the surface of the isolation portion 61 away from the array substrate 10 is less than 1.5 μm. In the prior art, the height difference between the surface of the first electrode 20 away from the array substrate 10 and the surface of the isolation portion 61 away from the array substrate 10 is typically greater than 1.5 μm. By adjusting the compensation layer 80, the height difference between the surface of the first electrode 20 away from the array substrate 10 and the surface of the isolation portion 61 away from the array substrate 10 can be reduced to less than 1.5 μm, thereby further reducing the height difference between the surface of the first reflective layer 212 away from the array substrate 10 and the surface of the isolation portion 61 away from the array substrate 10. Therefore, the height difference between the surface of the first reflective layer 212 away from the array substrate 10 and the surface of the reflective portion 71 on the isolation portion 61 away from the array substrate 10 can be further reduced, thus reducing the diffraction effect of the mirror display screen.

[0071] Optional, see reference Figure 2 When the compensation layer 80 is located on the side of the first electrode 20 close to the array substrate 10; the material of the compensation layer 80 includes organic adhesive.

[0072] Specifically, the first electrode 20 can be an anode. The first electrode 20 may include a first transparent conductive layer 211 and a second transparent conductive layer 213; the first reflective layer 212 is located between the first transparent conductive layer 211 and the second transparent conductive layer 213. Due to the limited thickness (66nm) of transparent conductive layers such as ITO in the manufacturing process, an organic adhesive layer with a wide thickness control range can be applied before the anode, followed by an ITO / Ag / ITO film layer. Then, the ITO / Ag / ITO and the thicker organic adhesive are patterned using exposure, development, and etching processes. This allows the first reflective layer 212 in the first electrode 20 to be raised. Then, a patterned pixel definition layer is applied, reducing the height difference at the junction of the first reflective layer 212 and the isolation portion 61 in the first electrode 20. This reduces the height difference between the surface of the reflective portion 71 away from the array substrate 10 and the surface of the first reflective layer 212 away from the array substrate 10, thus reducing reflectivity fluctuations and lowering the diffraction effect of the screen. In the direction perpendicular to the array substrate 10, the thickness of the compensation layer 80 can range from 0.8µm to 1µm, so as to avoid the compensation layer 80 being too thin, which would affect its function of improving the diffraction effect of the mirror display panel; and to avoid the compensation layer 80 being too thick, which would affect the function of the pixel definition layer in defining each light-emitting structure area.

[0073] Optional, see reference Figure 6 and Figure 7 When the compensation layer 80 is located inside the first electrode 20, the material of the compensation layer 80 is the same as the material of the film layer in the first electrode 20.

[0074] Specifically, when the compensation layer 80 is located within the first electrode 20, the material of the compensation layer 80 can be the same as the material of the film layer in the first electrode 20. This can reduce the height difference between the first electrode 20 and the isolation portion 61 to weaken the screen diffraction effect, while also reducing the impact on the device work function. Since the thickness of the first electrode 20 has a limit in the manufacturing process, the thickness of the compensation layer 80 in the direction perpendicular to the array substrate 10 is less than 0.1 μm.

[0075] The first electrode 20 may include a first transparent conductive layer 211 and a second transparent conductive layer 213; a first reflective layer 212 is located between the first transparent conductive layer 211 and the second transparent conductive layer 213. The first transparent conductive layer 212 is closer to the array substrate 10 than the second transparent conductive layer 213. Figure 6 As shown, the compensation layer 80 can be adjacent to the first transparent conductive layer 211 and be made of the same material as the first transparent conductive layer 211. Alternatively, as... Figure 7 As shown, the compensation layer 80 may be adjacent to the first reflective layer 212 and may be made of the same material as the first reflective layer 212.

[0076] Based on the above embodiments, in one embodiment of the present invention, Figure 8 This is an enlarged view of the junction between the first electrode and the isolation portion provided in an embodiment of the present invention, with reference to... Figure 8 The upper surface of the portion of the first electrode 20 located within the pixel opening has a curvature. That is, the upper surface of the final first electrode 20 has a certain curvature. By setting the upper surface of the portion of the first electrode 20 located within the pixel opening 62 to have a certain curvature, after the compensation layer 80 is applied, the first electrode 20 located within the pixel opening 62 is raised, thereby reducing the height difference between the first reflective layer 212 and the reflective portion 71 in the first electrode 20.

[0077] Optional, Figure 9 This is a cross-sectional view of another mirror display panel provided in an embodiment of the present invention, for reference. Figure 9 The display panel also includes a planarization layer 101, which is located between the array substrate 10 and the first electrode layer.

[0078] Specifically, the array substrate 10 includes a substrate and a driving circuit layer. The driving circuit layer is located on the side of the substrate near the first electrode layer. The substrate can be flexible and can be formed from any suitable insulating material with flexibility. For example, the flexible substrate can be formed from polymer materials such as polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PAR), or glass fiber reinforced plastic (FRP). The driving circuit layer includes a thin-film transistor (TFT). Taking a top-gate type TFT as an example, the TFT includes a semiconductor active layer located on a buffer layer, which includes a source region and a drain region formed by doping with N-type or P-type impurity ions. The region between the source region and the drain region is a channel region in which no impurities are doped. A gate insulating layer and a gate are sequentially provided on the channel region. The first electrode 20 is electrically connected to the source electrode or drain electrode of the thin-film transistor through a contact hole. Each first electrode 20 corresponds to a pixel driving circuit containing at least two first control transistors. For example, the pixel driving circuit can be a "2T1C" circuit or a "7T1C" circuit in the prior art.

[0079] In other words, the image-based arrangement of various film layers in the driving circuit layer results in an uneven surface. During the fabrication of subsequent film layers on the array substrate 10, this can also lead to a large height difference between the reflective portion 71 and the first reflective layer 212, or an uneven reflective surface of the entire second reflective layer 70, affecting the mirror display effect of the mirror display panel. By providing a planarization layer 101 on the surface of the array substrate 10 near the first electrode layer, a flat surface is provided for the fabrication of subsequent film layers, thereby improving the flatness of the subsequently formed film layers. This allows the entire second reflective layer 70 and the first reflective layer 212 to be formed on a relatively flat surface, reducing screen diffraction effects and improving the display effect of the mirror display device. Optionally, increasing the thickness of the planarization layer 101 to greater than 1.5 μm can further improve the flatness of the subsequently formed film layers, reduce screen diffraction effects, and improve the display effect of the mirror display device.

[0080] Optional, see reference Figure 9 The display panel also includes:

[0081] Encapsulation layer 50 is located on the side of the pixel definition layer away from the array substrate 10;

[0082] The second reflective layer 70 is located on the side of the encapsulation layer 50 away from the array substrate 10.

[0083] Specifically, the encapsulation layer 50 is used to protect the light-emitting layer 30 and other layers from external moisture and oxygen. By placing the second reflective layer 70 on the side of the thin-film encapsulation layer 50 away from the array substrate 10, the flatness of the second reflective layer 70 can be improved, while the encapsulation layer 50 is placed closer to the light-emitting layer 30 and electrode layer in the display panel, thus providing better protection for the light-emitting layer 30 and other layers.

[0084] Optionally, the encapsulation layer 50 includes a first encapsulation layer 51 and a second encapsulation layer 52 sequentially disposed along the side of the pixel definition layer away from the array substrate, and the second reflective layer 70 is located on the side of the second encapsulation layer away from the array substrate. It can be understood that by setting the encapsulation layer 50 as a multi-layer structure, the flatness of the second reflective layer 70 can be further improved while enhancing the protective effect on the light-emitting layer 30 and other layers.

[0085] Preferably, the encapsulation layer 50 further includes a third encapsulation layer 53, which is located between the first encapsulation layer 51 and the second encapsulation layer 52.

[0086] Specifically, the encapsulation layer 50 may include inorganic and organic layers, which are stacked alternately. The first encapsulation layer 51 is a first inorganic encapsulation layer, the second encapsulation layer 52 is a second inorganic encapsulation layer, and the third encapsulation layer 535 is an organic encapsulation layer (IJP). In actual production, the IJP layer is thicker than the other film layers, making the second encapsulation layer 52 on top of it flatter. This results in a smoother second reflective layer formed above the second encapsulation layer 52, leading to a better mirror display effect.

[0087] In some embodiments of the present invention, reference is made to Figure 10 The second reflective layer can be located on the surface of other film layers in the display panel. The second reflective layer only needs to be located on the side of the pixel definition layer away from the array substrate 10.

[0088] Optional, see reference Figures 9-10 The mirror display panel also includes a cover plate 90, which is located on the side of the second reflective layer 70 away from the array substrate 10. The cover plate 90 is used to encapsulate the internal film layers of the panel and protect the internal film layers from damage.

[0089] refer to Figure 11 The present invention also provides a display device 1001, which includes the display panel of any of the above embodiments and has the same technical effects, and will not be described again here.

[0090] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include: Array substrate; A first electrode layer is located on one side of the array substrate. The first electrode layer includes first electrodes spaced apart and a first reflective layer stacked with the first electrode layer. The first reflective layer is located on the non-light-emitting side of the display module. A pixel definition layer is located on the side of the first electrode layer opposite to the array substrate. The pixel definition layer includes a pixel opening and an isolation portion located between two adjacent pixel openings. At least a portion of the first electrode is located within the pixel opening. A second reflective layer, comprising spaced-apart reflective portions located on the side of the isolation portion facing away from the array substrate; wherein the reflective portions are configured to form a reflective mirror surface with the first reflective layer; and A compensation layer is located on the side of the first reflective layer closest to the array substrate. The compensation layer is used to reduce the height difference between the surface of the first reflective layer away from the array substrate and the surface of the second reflective layer away from the array substrate. The compensation layer is located on the side of the first electrode close to the array substrate, and / or is located inside the first electrode and is wrapped by the first electrode; The height difference between the surface of the first electrode away from the array substrate and the surface of the isolation portion away from the array substrate is less than 1.5 μm; When the compensation layer is located on the side of the first electrode close to the array substrate, the material of the compensation layer includes organic adhesive; in the direction perpendicular to the array substrate, the thickness of the compensation layer ranges from 0.8 μm to 1 μm; When the compensation layer is located inside the first electrode and is wrapped by the first electrode, the material of the compensation layer is the same as the material of the film layer in the first electrode, and the position of the compensation layer needs to meet the requirement of raising the height of the upper surface of the first reflective layer; in the direction perpendicular to the array substrate, the thickness of the compensation layer is less than 0.1 μm.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the pixel opening on the array substrate is located within the orthographic projection of the first electrode on the array substrate; the boundary of the orthographic projection of the reflective portion on the array substrate overlaps with the boundary of the orthographic projection of the adjacent first reflective layer on the array substrate, or the distance between the orthographic projection of the reflective portion on the array substrate and the orthographic projection of the adjacent first reflective layer on the array substrate is equal to zero.

3. The display panel according to claim 1, characterized in that, The orthographic projection of the reflective portion on the array substrate and the orthographic projection of the pixel opening on the array substrate do not overlap.

4. The display panel according to claim 1, characterized in that, The first electrode includes a first transparent conductive layer and a second transparent conductive layer, and the first reflective layer is located between the first transparent conductive layer and the second transparent conductive layer; the first transparent conductive layer is disposed close to the array substrate relative to the second transparent conductive layer; The compensation layer is adjacent to the first transparent conductive layer and is made of the same material as the first transparent conductive layer. And / or, the compensation layer is adjacent to the first reflective layer and is made of the same material as the first reflective layer.

5. The display panel according to claim 1, characterized in that, The upper surface of the portion of the first electrode located within the pixel opening has a curvature.

6. The display panel according to claim 1, characterized in that, Also includes: An encapsulation layer is located on the side of the pixel definition layer away from the array substrate; The second reflective layer is located on the side of the encapsulation layer away from the array substrate.

7. The display panel according to claim 6, characterized in that, The encapsulation layer includes a first encapsulation layer and a second encapsulation layer sequentially disposed along the side of the pixel definition layer away from the array substrate, and the second reflective layer is located on the side of the second encapsulation layer away from the array substrate.

8. The display panel according to claim 7, characterized in that, The encapsulation layer further includes a third encapsulation layer, which is located between the first encapsulation layer and the second encapsulation layer.

9. A display device, characterized in that, Includes the display panel described in any one of claims 1 to 8.

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