Mirror display panel and electronic device

Abstract

The present application provides a mirror display panel, which includes: an array substrate; a first electrode layer located on one side of the array substrate, the first electrode layer including a plurality of first electrodes arranged at intervals; a pixel defining layer located on the side of the first electrode layer away from the array substrate, the pixel defining layer including pixel openings exposing the first electrodes, and adjacent first electrodes being spaced from each other through the pixel defining layer; a light-emitting material layer located within the pixel openings; a second electrode layer located on the side of the light-emitting material layer and the pixel defining layer away from the array substrate; a reflective layer located on the side of the second electrode layer away from the array substrate, the reflective layer including reflective openings corresponding to the positions of the pixel openings. By disposing the reflective layer on the side of the second electrode layer away from the array substrate, the distance between the reflective layer and the first electrode layer can be reduced, such that the first electrode layer and the reflective layer can together serve as a reflective mirror, thereby improving the mirror reflection imaging effect of the mirror display panel.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and more particularly, to a mirror display panel and an electronic device. Background Art

[0002] With the popularization of intelligent devices, the forms of display devices have become increasingly diverse. In some display devices, the display function is integrated into a mirror, enabling the mirror to be used as a display screen. However, in existing mirror display panels, due to their structural limitations, the display effect or the reflection imaging effect is not ideal. Summary of the Invention

[0003] In order to overcome the above deficiencies in the prior art, the purpose of the present application is to provide a mirror display panel, which includes:

[0004] An array substrate;

[0005] A first electrode layer located on one side of the array substrate, the first electrode layer including a plurality of first electrodes arranged at intervals;

[0006] A pixel defining layer located on the side of the first electrode layer away from the array substrate, the pixel defining layer including a pixel opening exposing the first electrode;

[0007] A reflective layer located on the side of the pixel defining layer away from the array substrate, the reflective layer including a reflective opening, and the orthographic projection of the pixel opening on the array substrate is located within the orthographic projection of the reflective opening on the array substrate. Thus, by directly disposing the reflective layer on the side of the pixel defining layer away from the array substrate, the distance between the reflective layer and the first electrode layer can be reduced, enabling the first electrode layer and the reflective layer to jointly form the mirror reflective layer of the mirror display panel (i.e., the first electrode layer and the reflective layer can act as a reflective mirror together), thereby improving both the mirror reflection imaging effect and the display effect of the mirror display panel.

[0008] In a possible implementation, the pixel defining layer includes a slope region that encloses the pixel opening, and the orthographic projection of the slope region on the first electrode layer is located at the edge of the first electrode, and the slope of the slope region is less than 45 degrees.

[0009] Thus, by reducing the slope of the slope region, the refraction angle of the incident and reflected light by the slope region can be minimized, thereby reducing the influence of the slope region on the reflection effect of the edge of the first electrode covered by it.

[0010] In a possible implementation, at least a part of the orthographic projection of the reflection layer on the array substrate coincides with the edge of the orthographic projection of the first electrode on the array substrate.

[0011] In this way, there is no gap between the orthographic projections of the reflection layer and the first electrode on the array substrate, and each position of the light-emitting surface of the mirror display panel has a reflection function, forming a whole-surface mirror reflection area, thereby improving the integrity of the mirror reflection of the display device.

[0012] In a possible implementation, the pixel defining layer includes a slope area, the slope area encloses the pixel opening, and the orthographic projection of the slope area on the first electrode layer is located at the edge of the first electrode, and the slope area is provided with a plurality of through holes exposing the first electrode.

[0013] In this way, by providing through holes in the slope area, incident light and reflected light can pass through the through holes, reducing the blockage of the slope area to the first electrode, thereby reducing the influence of the slope area on the reflection effect of the edge of the first electrode covered by it.

[0014] In a possible implementation, the plurality of through holes include at least two different hole diameters.

[0015] In a possible implementation, the plurality of through holes are non-periodically distributed in the slope area.

[0016] In a possible implementation, the plurality of through holes include at least two different hole pitches.

[0017] In this way, by providing the through holes with various hole diameters, distribution positions or hole pitches, the overall distribution of the plurality of through holes can be non-periodic, thereby reducing diffraction generated when the through holes reflect light and reducing the influence of the slope area on the reflection effect of the edge of the first electrode covered by it.

[0018] In a possible implementation, the material of the reflection layer includes silver.

[0019] In this way, using silver with a high reflectivity as the material of the reflection layer can ensure that the reflection layer has a better reflection effect.

[0020] In a possible implementation, the mirror display panel further includes:

[0021] A light-emitting material layer located in the pixel opening;

[0022] A second electrode layer located on the side of the light-emitting material layer and the reflection layer away from the array substrate;

[0023] A first inorganic encapsulation layer located on a side of the second electrode layer away from the pixel defining layer;

[0024] An organic encapsulation layer located on a side of the first inorganic encapsulation layer away from the second electrode layer;

[0025] A second inorganic encapsulation layer located on a side of the organic encapsulation layer away from the first inorganic encapsulation layer; and,

[0026] A cover plate layer located on a side of the second inorganic encapsulation layer away from the organic encapsulation layer.

[0027] In this way, by disposing film layers such as the second electrode layer, the first inorganic encapsulation layer, the organic encapsulation layer, and the second inorganic encapsulation layer on a side of the reflective layer away from the pixel defining layer, the distance between the reflective layer and the first electrode layer can be reduced, so that the first electrode layer and the reflective layer can be used as a reflective mirror together, thereby improving the specular reflection imaging effect of the specular display panel.

[0028] Another object of the present application is to provide an electronic device, and the electronic device includes the specular display panel provided by the present application. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is one of the schematic structural diagrams of the specular display panel in the prior art;

[0031] Figure 2 It is another schematic structural diagram of the specular display panel in the prior art;

[0032] Figure 3 It is one of the partial film layer schematic diagrams of the specular display panel provided by this embodiment;

[0033] Figure 4 It is another partial film layer schematic diagram of the specular display panel provided by this embodiment;

[0034] Figure 5 It is the third partial film layer schematic diagram of the specular display panel provided by this embodiment;

[0035] Figure 6 It is the fourth partial film layer schematic diagram of the specular display panel provided by this embodiment;

[0036] Figure 7 The fifth partial film layer schematic diagram of the mirror display panel provided in this embodiment;

[0037] Figure 8 The sixth partial film layer schematic diagram of the mirror display panel provided in this embodiment. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some but not all of the embodiments of this application. Usually, the components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but is merely representative of the selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.

[0040] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0042] It should be noted that, without conflict, the different features in the embodiments of this application can be combined with each other.

[0043] Please refer to Figure 1 , in some mirror display panels that can achieve a mirror reflection effect, including an array substrate 110, a first electrode layer, a pixel defining layer 130, a light-emitting material layer 140, a second electrode layer 150, a first inorganic encapsulation layer 160, an organic encapsulation layer 170, a second inorganic encapsulation layer 180, a reflection layer 900, and a cover plate layer 190.

[0044] Among them, the first electrode layer is located on one side of the array substrate 110. The first electrode layer may include a plurality of first electrodes 121 spaced apart from each other. The first electrode layer may be an anode layer.

[0045] The pixel defining layer 130 is located on the side of the first electrode layer away from the array substrate 110. The pixel defining layer 130 includes pixel openings exposing the first electrodes 121.

[0046] The light-emitting material layer 140 is located in the pixel openings and in contact with the first electrodes 121.

[0047] The second electrode layer 150 is located on the side of the light-emitting material layer 140 and the pixel defining layer 130 away from the array substrate 110. The second electrode layer 150 may be a cathode layer.

[0048] The first inorganic encapsulation layer 160 is located on the side of the second electrode layer 150 away from the array substrate 110. The organic encapsulation layer 170 is located on the side of the first inorganic encapsulation layer 160 away from the second electrode layer 150. The second inorganic encapsulation layer 180 is located on the side of the organic encapsulation layer 170 away from the first inorganic encapsulation layer 160. The reflective layer 900 is located on the side of the second inorganic encapsulation layer 180 away from the organic encapsulation layer 170. The cover layer 190 is located on the side of the reflective layer 900 away from the second inorganic encapsulation layer 180. The reflective layer 900 is used to achieve the specular reflection function.

[0049] In one solution, the reflective layer 900 has a certain light transmittance while having a reflective function. In this way, the light emitted by the light-emitting material layer 140 located under the reflective layer 900 can pass through the reflective layer 900 to achieve the display function. However, the reflective layer 900 usually cannot have both good light transmittance and reflection effects at the same time. When the display function is required, a part of the reflection effect needs to be sacrificed, resulting in a poor specular reflection effect of the specular display panel.

[0050] In another solution, please refer to Figure 2 , a plurality of reflective openings are formed in the reflective layer 900, and the reflective openings correspond to the positions of the light-emitting material layer 140 in the pixel openings. In this way, the light emitted by the light-emitting material layer 140 can be emitted through the reflective openings, so that the reflective layer 900 does not need to have a very high light transmittance to achieve the display function. However, it is difficult to achieve specular reflection at the reflective openings, resulting in a reflection missing area in the specular display panel, affecting the overall specular reflection effect.

[0051] In view of this, this embodiment provides a solution that can solve the above problems. The solution provided by this embodiment will be elaborated in detail below.

[0052] Please refer to Figure 3 , Figure 3Schematic diagram of partial film layers of a mirror display panel provided in this embodiment. The mirror display panel may include an array substrate 110, a first electrode layer, a pixel defining layer 130, and a reflective layer 200.

[0053] The array substrate 110 may include an array composed of multiple driving units. For example, the driving unit may be a thin film transistor (TFT).

[0054] The first electrode layer may include multiple first electrodes 121 arranged at intervals. The first electrode 12 is a reflective electrode. In this embodiment, the first electrode 121 may include a metal with good reflection performance, such as silver (Ag). In a possible implementation, the first electrode 121 may be a composite layer composed of indium tin oxide (ITO) and silver (Ag), such as a three-layer composite layer composed of ITO-Ag-ITO.

[0055] The first electrode 121 may be an anode. Different first electrodes 121 may be electrically connected to different driving circuits in the array substrate 110.

[0056] The pixel defining layer 130 is located on the side of the first electrode layer away from the array substrate 110. The pixel defining layer 130 includes pixel openings that expose the first electrodes 121. Adjacent first electrodes 121 are spaced apart from each other by the pixel defining layer 130.

[0057] The reflective layer 200 is located on the side of the pixel defining layer 130 away from the array substrate 110. The reflective layer 200 includes reflective openings. The orthographic projection of the pixel opening on the array substrate is located within the orthographic projection of the reflective opening on the array substrate, that is, there is an overlap between the pixel opening and the reflective opening in the direction perpendicular to the light-emitting surface of the mirror display panel, and the corresponding pixel opening and reflective opening expose the first electrode 121. The reflective layer 200 is used to achieve the mirror reflection function. In a possible implementation, the reflective layer 200 may be made of a material with a high reflectivity. For example, the material of the reflective layer 200 may include silver (Ag).

[0058] Based on the above design, compared with the prior art solution in which the reflective layer 200 is disposed on the side close to the cover plate layer 190, in the mirror display panel provided in this embodiment, by directly disposing the reflective layer 200 on the side of the pixel defining layer 130 away from the array substrate 110, the distance between the reflective layer 200 and the first electrode 121 can be reduced, thereby reducing the optical path difference between the light reflected by the first electrode 121 and the light reflected by the reflective layer 200. Therefore, the first electrode 121 and the reflective layer 200 can together serve as a reflective mirror, thereby improving the mirror reflection imaging effect of the mirror display panel.

[0059] In a possible implementation, please refer to Figure 4 , a light-emitting material layer 140 may also be provided in the pixel opening, and the side of the reflective layer 200 away from the array substrate 110 may further include other film layers such as a second electrode layer 150, a first inorganic encapsulation layer 160, an organic encapsulation layer 170, and a second inorganic encapsulation layer 180, and a cover plate layer 190.

[0060] Specifically, the light-emitting material layer 140 is located in the pixel opening of the pixel defining layer 130. In this embodiment, the light-emitting material layer 140 includes an organic electroluminescent material. Based on the embodiment where the first electrode 121 is an anode, optionally, in this embodiment, film layer structures such as an electron blocking layer (EBL), a hole transport layer (HTL), and a hole injection layer (HIL) may also be included between the light-emitting material layer 140 and the first electrode 121.

[0061] The second electrode layer 150 is located on the side of the light-emitting material layer 140 and the reflective layer 200 away from the array substrate 110, and the second electrode layer 150 may be a cathode layer. Optionally, in this embodiment, film layer structures such as an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL) may also be included between the second electrode layer 150 and the light-emitting material layer 140 and between the second electrode layer 150 and the reflective layer 200.

[0062] For example, in this embodiment, after forming the pixel defining layer 130, the reflective layer 200 may be formed first, and then organic materials may be evaporated to form a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), and a light-emitting material layer 140 located in the pixel opening, and then a hole blocking layer (HBL), an electron transport layer (ETL), an electron injection layer (EIL), and a second electrode layer 150 covering the light-emitting material layer 140 and the reflective layer 200 may be formed in sequence.

[0063] The first inorganic encapsulation layer 160 is located on the side of the second electrode layer 150 away from the array substrate 110. The organic encapsulation layer 170 is located on the side of the first inorganic encapsulation layer 160 away from the second electrode layer 150. The second inorganic encapsulation layer 180 is located on the side of the organic encapsulation layer 170 away from the first inorganic encapsulation layer 160. The cover plate layer 190 is located on the side of the second inorganic encapsulation layer 180 away from the organic encapsulation layer 170.

[0064] In a possible implementation, the pixel defining layer 130 includes a slope region. The slope region encloses a pixel opening, and the orthographic projection of the slope region on the first electrode 121 is located at the edge of the first electrode 121. The slope of the slope region is less than 45 degrees.

[0065] Specifically, please refer to Figure 5 , the first electrode 121 may include an edge position covered by the pixel defining layer 130 and a central position not covered by the pixel defining layer 130. The slope region covers the edge position of the first electrode 121. The surface of the slope region away from the array substrate is a slope. In the direction from the edge position of the first electrode 121 to the central position of the first electrode 121, the height of the slope from the first electrode gradually decreases. Since this slope has a certain angle, it will refract the light incident on the first electrode 121 and the light reflected by the first electrode 121, resulting in distortion of the specular reflection imaging at the corresponding position of the slope region. Therefore, in this embodiment, by setting the slope angle α between the slope region and the first electrode 121 to be less than 45 degrees, the slope of the slope region is relatively gentle, which can reduce the influence of the slope region on the light propagation angle, thereby reducing the imaging distortion at the corresponding position of the slope region.

[0066] In a possible implementation, the pixel defining layer further includes a flat region connected to the slope region. The flat region is located between adjacent pixel openings, and the heights of all parts of the flat region away from the array substrate are approximately the same. The orthographic projection of the reflective layer 121 on the pixel defining layer falls within the flat region. In other words, the reflective layer 121 only covers the surface of the flat region away from the array substrate. In this way, the reflective layer 121 located on the flat region can also maintain a substantially flat surface, ensuring the planar imaging effect of the reflective layer 121.

[0067] In a possible implementation, at least part of the orthographic projection of the reflective layer 200 on the array substrate 110 coincides with the edge of the orthographic projection of the first electrode 121 on the array substrate 110.

[0068] Specifically, please refer to Figure 6, in this embodiment, the edge of the first electrode 121 can be covered by the reflective layer 200 in the direction perpendicular to the light-emitting surface by increasing the size of the first electrode 121. In this way, there is no gap between the positive projection of the reflective layer 200 and the first electrode 121 on the array substrate 110, and each position of the light-emitting surface of the mirror display panel has a reflective function, forming an entire mirror reflection area, thereby improving the integrity of the mirror reflection of the display device.

[0069] Meanwhile, as described above, due to the small optical path difference, the light reflected by the first electrode 121 and the light reflected by the reflective layer 200 will not interfere constructively (i.e., no obvious diffraction will occur), so that the position corresponding to the overlapping area of the positive projections of the reflective layer 200 and the first electrode 121 on the light-emitting surface can also meet the requirements of mirror reflection. From this perspective, the requirement for the opening accuracy of the reflective layer 200 is also reduced, and thus the manufacturing difficulty of the mirror display panel is reduced. So far, this implementation can obtain a mirror display panel with better mirror reflection imaging effect and display effect with a relatively simple manufacturing process.

[0070] In a possible implementation, please refer to Figure 7 , the pixel defining layer 130 includes a slope region, the slope region is located at the edge of the first electrode 121 on the side away from the array substrate 110, and a plurality of through holes 300 exposing the first electrode 121 are provided in the slope region.

[0071] Specifically, in this embodiment, after the reflective layer 200 is formed on the pixel defining layer 130, the pixel defining layer 130 at the position of the slope region can be perforated to expose the first electrode 121.

[0072] In this way, by providing the through holes 300 in the slope region, the incident light and the reflected light can pass through the through holes 300, and this part of the light will not change the angle due to the refraction of the slope region, thereby reducing the influence of the slope region on the reflection effect of the edge of the first electrode 121 covered by it.

[0073] Furthermore, please refer to Figure 8 , in a possible implementation, the plurality of through holes 300 include at least two different hole diameters.

[0074] In another possible implementation, the plurality of through holes 300 are non-periodically distributed in the slope region. For example, the plurality of through holes 300 can be randomly distributed in the slope region.

[0075] In another possible implementation, the plurality of through holes 300 include at least two different hole pitches.

[0076] Thus, by providing the through holes 300 with various apertures, distribution positions or hole pitches, the overall distribution of the plurality of through holes 300 can be made non-periodic, thereby reducing the diffraction generated by the through holes 300 when reflecting light and reducing the influence of the slope region on the reflection effect on the edge of the first electrode 121 covered by it.

[0077] Based on the same inventive concept, this embodiment also provides an electronic device, which may include the mirror display panel provided in this embodiment. The electronic device may include devices such as a smart dressing mirror, a smart makeup mirror, and a smart rearview mirror.

[0078] In summary, for the mirror display panel and the electronic device provided in this application, by directly disposing the reflective layer on the side of the pixel defining layer away from the array substrate, the distance between the reflective layer and the first electrode layer can be reduced, so that the first electrode layer and the reflective layer can together serve as a reflective mirror, thereby improving the mirror reflection imaging effect of the mirror display panel.

[0079] Furthermore, by covering the edge of the first electrode with the reflective layer, the mirror reflection display effect of the mirror display panel can be improved. By setting the slope of the slope region of the pixel defining layer, providing through holes in the slope region, etc., the influence of the slope region on the mirror reflection imaging effect can be reduced.

[0080] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0081] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A mirror display panel, characterized in that, The mirror display panel includes: An array substrate; A first electrode layer located on one side of the array substrate, the first electrode layer including a plurality of first electrodes arranged at intervals; A pixel defining layer located on the side of the first electrode layer away from the array substrate, the pixel defining layer including a pixel opening for exposing the first electrode; and, A reflective layer located on the side of the pixel defining layer away from the array substrate, the reflective layer including a reflective opening, and the orthographic projection of the pixel opening on the array substrate is located within the orthographic projection of the reflective opening on the array substrate; The pixel defining layer includes a slope region, the slope region encloses the pixel opening, and the orthographic projection of the slope region on the first electrode layer is located at the edge of the first electrode, and the slope region is provided with a plurality of through holes exposing the first electrode.

2. The mirror display panel according to claim 1, characterized in that, The pixel defining layer includes a slope region, the slope region encloses the pixel opening, and the orthographic projection of the slope region on the first electrode layer is located at the edge of the first electrode, and the slope of the slope region is less than 45 degrees.

3. The mirror display panel according to claim 1, characterized in that, At least a part of the orthographic projection of the reflective layer on the array substrate coincides with the edge of the orthographic projection of the first electrode on the array substrate.

4. The mirror display panel according to claim 1, characterized in that, The plurality of through holes include at least two different hole diameters.

5. The mirror display panel according to claim 1, characterized in that, The plurality of through holes are non-periodically distributed in the slope region.

6. The mirror display panel according to claim 1, characterized in that, The plurality of through holes include at least two different hole pitches.

7. The mirror display panel according to claim 1, characterized in that, The material of the reflective layer includes silver.

8. The mirror display panel according to claim 1, characterized in that, The mirror display panel further includes: A light-emitting material layer located in the pixel opening; A second electrode layer located on the side of the light-emitting material layer and the reflective layer away from the array substrate; A first inorganic encapsulation layer located on the side of the second electrode layer away from the pixel defining layer; An organic encapsulation layer located on the side of the first inorganic encapsulation layer away from the second electrode layer; A second inorganic encapsulation layer located on the side of the organic encapsulation layer away from the first inorganic encapsulation layer; and, A cover layer located on the side of the second inorganic encapsulation layer away from the organic encapsulation layer.

9. An electronic device, characterized in that, The electronic device includes the mirror display panel according to any one of claims 1-8.

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