Display panel, display device and preparation method of display panel

Abstract

The application discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, a first electrode layer comprising a first electrode, a pixel definition layer located on the substrate, the pixel definition layer comprising an isolation portion and a pixel opening formed by the isolation portion, the pixel opening exposing at least part of the first electrode, an encapsulation layer located on a side of the pixel definition layer away from the first electrode layer, a filter layer located on a side of the encapsulation layer away from the pixel definition layer, the filter layer comprising an opaque portion and a filter opening formed by the opaque portion, and the filter opening and the pixel opening at least partially overlap on the substrate. The surface of the first electrode away from the substrate is convex to form a reflection portion towards the filter layer, and at least part of the reflection portion is projected on the substrate within the projection of the pixel opening and the filter opening on the substrate. The application can reduce the reflectivity of the entire display panel and improve user experience.

Description

Technical Field

[0001] This application relates to the field of displays, specifically to a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] Organic light-emitting diodes (OLEDs) are self-emissive display devices. Compared to traditional liquid crystal displays (LCDs), OLED technology does not require a backlight and is self-emissive. OLEDs use a thin layer of organic material and a glass substrate; when current flows through, the organic material emits light. Therefore, OLED display panels can significantly save energy, be made lighter and thinner, withstand a wider range of temperature variations than LCD panels, and have a wider viewing angle. OLED display panels are expected to become the next-generation flat panel display technology after LCDs and are currently one of the most watched technologies in the flat panel display field.

[0003] In existing technologies, thin-film encapsulation is used to improve the sealing performance and flexibility of OLED display panels. To further reduce the reflectivity of the OLED display panel, a filter film is directly fabricated on the thin-film encapsulation. However, this type of OLED display panel still suffers from high reflectivity, which negatively impacts the user experience. Summary of the Invention

[0004] This application provides a display panel, a display device, and a method for manufacturing the display panel, with the aim of reducing the reflectivity of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel, comprising: a substrate; a first electrode layer located on the substrate, the first electrode layer including a first electrode; a pixel definition layer located on the substrate, the pixel definition layer including an isolation portion and a pixel opening formed by the isolation portion, the pixel opening exposing at least a portion of the first electrode; an encapsulation layer located on the side of the pixel definition layer away from the first electrode layer; and a light filter layer located on the side of the encapsulation layer away from the pixel definition layer, the light filter layer including a light-shielding portion and a light filter opening formed by the light-shielding portion, wherein the orthographic projection of the light filter opening on the substrate and the orthographic projection of the pixel opening on the substrate at least partially overlap; wherein, the surface of the first electrode away from the substrate protrudes in a direction toward the light filter layer to form a reflective portion, and the orthographic projection of at least a portion of the reflective portion on the substrate is located within the orthographic projections of the pixel opening and the light filter opening on the substrate.

[0006] According to an embodiment of the first aspect of this application, the reflective portion is conical and includes a top end, the orthographic projection of the top end on the substrate being located within the orthographic projections of the pixel opening and the filter opening on the substrate.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the reflective portion further includes an outer edge and an inclined surface connecting the outer edge and the top edge, wherein the inclined surface is inclined along the direction close to the encapsulation layer in the direction from the outer edge to the top edge.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the outer edge is connected to the inner wall surface of the isolation portion facing the pixel opening.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection of the top end on the substrate is located at the center of the orthogonal projection of the pixel opening or filter opening on the substrate.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection center of the pixel opening on the substrate and the orthogonal projection center of the filter opening on the substrate overlap.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the inclined surfaces form a frustum shape, and there is a preset height between the top end and the surface of the substrate facing the first electrode layer, so that light incident on the plane perpendicular to the substrate and near the top end can be reflected to the light-shielding part.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the inclined surface is an arc-shaped surface, and the opening of the inclined surface is away from the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the curvature of the inclined surface tends to increase along the direction from the outer edge to the top.

[0014] According to any of the foregoing embodiments of the first aspect of this application, a protrusion is provided on the surface of the substrate facing the first electrode layer, and at least a portion of the first electrode is located on the protrusion to form a reflective portion.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the first electrode is a reflective electrode.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the material of the first electrode includes a metallic material.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the material of the first electrode includes at least one of magnesium and silver.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection of the filter opening on the substrate is located within the orthogonal projection of the pixel opening on the substrate.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the projected area of ​​the filter opening on the substrate is smaller than the projected area of ​​the pixel opening on the substrate.

[0020] An embodiment of the second aspect of this application provides a display device that includes a display panel of any of the above embodiments.

[0021] An embodiment of the third aspect of this application provides a method for manufacturing a display panel, comprising:

[0022] A first electrode layer is prepared on a substrate. The first electrode layer includes a first electrode. The surface of the first electrode facing away from the substrate protrudes in the direction away from the substrate to form a reflective portion.

[0023] A pixel definition layer is prepared on a substrate. The pixel definition layer includes an isolation portion and a pixel opening formed by the isolation portion, and at least a portion of the reflective portion is exposed through the pixel opening.

[0024] An encapsulation layer is fabricated on the side of the pixel definition layer that is away from the first electrode layer;

[0025] A filter layer is prepared on the side of the encapsulation layer away from the pixel definition layer. The filter layer includes a light-shielding portion and a filter opening formed by the light-shielding portion. The orthographic projection of the filter opening on the substrate and the orthographic projection of the pixel opening on the substrate are at least partially overlapped. At least a portion of the reflective portion is exposed through the filter opening.

[0026] According to an embodiment of the third aspect of this application, the step of fabricating a first electrode layer on a substrate includes:

[0027] A first mask is disposed on a substrate. The first mask has a first body region and a first mask region for forming a reflective portion. The transmittance of the first mask region gradually decreases along the direction from the edge to the center.

[0028] A laser is irradiated onto the side of the first photomask facing away from the substrate to form a protrusion;

[0029] A first electrode layer is prepared on a substrate, with at least a portion of the first electrode located on a protrusion to form a reflective portion.

[0030] According to any of the foregoing embodiments of the third aspect of this application, the substrate includes a driving circuit and a planarization layer disposed on one side of the driving circuit, and the step of fabricating a first electrode layer on the substrate includes:

[0031] A first mask is disposed on a substrate. The first mask has a first body region, a first mask region for forming a reflective portion, and a first light-transmitting region for forming vias in a planarization layer. The light transmittance of the first mask region gradually decreases along the direction from the edge of the first mask region to the center. The light transmittance of the first light-transmitting region is greater than that of the first mask region and the first body region.

[0032] A laser is irradiated onto the side of the first mask facing away from the substrate to form protrusions and vias in the planarization layer.

[0033] A first electrode layer is prepared on a substrate, at least a portion of the first electrode is located on a protrusion to form a reflective portion, and at least another portion of the first electrode is electrically connected via a via and a driving circuit.

[0034] According to any of the foregoing embodiments of the third aspect of this application, the transmittance of the first body region is equal to the maximum transmittance of the first mask region.

[0035] According to any of the foregoing embodiments of the third aspect of this application, the substrate includes a driving circuit and a planarization layer disposed on one side of the driving circuit, and the step of fabricating a first electrode layer on the substrate includes:

[0036] A second mask is disposed on the substrate. The second mask includes a second body region and a second light-transmitting region for forming vias in the planarization layer. The light transmittance of the second light-transmitting region is greater than that of the second body region.

[0037] A laser is irradiated onto the side of the second mask facing away from the substrate to form a via in the planarization layer;

[0038] A third mask is disposed on the substrate. The third mask includes a third body region and a third mask region. The transmittance of the third mask region gradually decreases along the direction from the edge to the center.

[0039] A laser is irradiated toward the substrate on the side of the third mask away from the substrate to form a protrusion in the planarization layer;

[0040] A first electrode layer is prepared on a substrate, at least a portion of the first electrode is located on a protrusion to form a reflective portion, and at least another portion of the first electrode is electrically connected via a via and a driving circuit.

[0041] According to any of the foregoing embodiments of the third aspect of this application, the transmittance of the third body region is equal to the maximum transmittance of the third mask region.

[0042] In the display panel provided in this application embodiment, the display panel includes a substrate and a first electrode layer, a pixel definition layer, an encapsulation layer, and a filter layer sequentially disposed on the substrate. The pixel openings in the pixel definition layer are used to house light-emitting units. The first electrode in the first electrode layer is used to drive the light-emitting units to emit light. The encapsulation layer is used to seal the light-emitting units. The filter openings are used to house filter units, which filter out light and improve the display effect of the display panel. When ambient light is incident on the first electrode through the filter openings, since a reflective portion is provided on the first electrode, and at least a portion of the orthographic projection of the reflective portion on the substrate lies within the orthographic projections of the pixel openings and the filter openings on the substrate, the ambient light will be incident on the reflective portion. The reflective portion is formed by protruding from the surface of the first electrode away from the substrate in a direction toward the filter layer, thus changing the reflection direction of the ambient light, reflecting more ambient light to the light-shielding portion, thereby reducing the overall reflectivity of the display panel and improving the user experience. Attached Figure Description

[0043] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0044] Figure 1 This is a top view schematic diagram of a display panel provided according to an embodiment of this application;

[0045] Figure 2 Figure 1 A magnified view of the Q region in one example;

[0046] Figure 3 yes Figure 2 Sectional view at point BB;

[0047] Figure 4 In another embodiment Figure 2 Sectional view at point BB;

[0048] Figure 5 In yet another embodiment Figure 2 Sectional view at point BB;

[0049] Figure 6 In the embodiments Figure 2 Sectional view at point BB;

[0050] Figure 7 This is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of this application;

[0051] Figure 8 This is a flowchart illustrating a step in a method for manufacturing a display panel according to an embodiment of this application.

[0052] Figure 9 This is a flowchart illustrating a step in a method for manufacturing a display panel according to another embodiment of this application;

[0053] Figure 10 and Figure 11 This is a schematic diagram illustrating a method for manufacturing a display panel according to another embodiment of this application;

[0054] Figure 12 This is a flowchart illustrating a step in a method for manufacturing a display panel according to another embodiment of this application;

[0055] Figures 13 to 16 This is a schematic diagram illustrating a method for manufacturing a display panel according to another embodiment of this application.

[0056] Explanation of reference numerals in the attached figures:

[0057] 100. Display panel; 10. Substrate; 11. Protrusion; 12. Via; 20. First electrode layer; 21. First electrode; 210. Reflective part; 211. Top end; 212. Outer edge; 213. Inclined surface; 30. Pixel definition layer; 31. Isolation part; 32. Pixel opening; 33. Light-emitting unit; 40. Encapsulation layer; 50. Filter layer; 51. Light-shielding part; 52. Filter opening; 53. Filter unit; 60. Second electrode layer; 70. First mask; 71. First body area; 72. First mask area; 73. First light-transmitting area; 80. Second mask; 81. Second body area; 82. Second light-transmitting area; 90. Third mask; 91. Third body area; 92. Third mask area. Detailed Implementation

[0058] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0060] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0061] In related technologies, a display panel includes an array substrate, a light-emitting structure, and a light-filtering layer. The light-emitting structure includes a light-emitting layer and an encapsulation layer. In some technologies, the light-filtering layer is placed on the encapsulation layer of the light-emitting structure to reduce the reflectivity of the display panel to ambient light. The inventors discovered that because pixel electrodes are located on the side of the light-emitting layer facing the array substrate, these pixel electrodes still reflect ambient light, resulting in excessively high reflectivity of the display panel to ambient light, decreased contrast, and negatively impacting the user experience.

[0062] To address the aforementioned issues, this application provides a display panel, a display device, and a method for manufacturing the display panel. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and the display device.

[0063] This application provides a display panel, which may be an organic light-emitting diode (OLED) display panel.

[0064] Please see Figures 1 to 3 , Figure 1 This is a top view schematic diagram of a display panel 100 provided according to an embodiment of this application. Figure 2 yes Figure 1 A magnified view of the Q region in one example. Figure 3 yes Figure 2 Sectional view at point BB.

[0065] like Figures 1 to 3 As shown, an embodiment of the first aspect of this application provides a display panel 100, including: a substrate 10, a first electrode layer 20, a pixel definition layer 30, an encapsulation layer 40, and a light filter layer 50. The first electrode layer 20 is located on the substrate 10 and includes a first electrode 21. The pixel definition layer 30 is located on one side of the substrate 10 and includes an isolation portion 31 and a pixel opening 32 formed by the isolation portion 31. The pixel opening 32 exposes at least a portion of the first electrode 21. The encapsulation layer 40 is located on the side of the pixel definition layer 30 away from the first electrode layer 20. The light filter layer 50 is located on the side of the encapsulation layer 40 away from the pixel definition layer 30 and includes a light-shielding portion 51 and a light filter opening 52 formed by the light-shielding portion 51. The orthographic projection of the light filter opening 52 on the substrate 10 and the orthographic projection of the pixel opening 32 on the substrate 10 are at least partially overlapped. The surface of the first electrode 21 away from the substrate 10 protrudes in the direction toward the light filter layer 50 to form a reflective portion 210. The orthographic projection of at least a portion of the reflective portion 210 on the substrate 10 is located within the orthographic projection of the pixel opening 32 and the light filter opening 52 on the substrate 10.

[0066] Optionally, the display panel 100 includes a display area AA and a non-display area NA, with the first electrode 31, pixel opening 32, and filter opening 52 located in the display area AA. In other embodiments, the display panel 100 may not include the non-display area NA. The pixel opening 32 exposing at least a portion of the first electrode 21 means that at least a portion of the first electrode 21 and the pixel opening 32 are overlapped in their orthographic projections onto the substrate 10.

[0067] In the display panel 100 provided in this embodiment, the display panel 100 includes a substrate 10 and a first electrode layer 20, a pixel definition layer 30, an encapsulation layer 40, and a light filter layer 50 sequentially disposed on the substrate 10. The pixel opening 32 of the pixel definition layer 30 is used to provide a light-emitting unit 33. The first electrode 21 of the first electrode layer 20 is used to drive the light-emitting unit 33 to emit light. The encapsulation layer 40 is used to seal the light-emitting unit 33. The light filter opening 52 is used to provide a light filter unit 53, which filters out emitted light and improves the display effect of the display panel 100. When ambient light is incident on the first electrode 21 through the light filter opening 52, since a reflective portion 210 is provided on the first electrode 21, and at least a portion of the orthographic projection of the reflective portion 210 on the substrate 10 is located within the orthographic projections of the pixel opening 32 and the light filter opening 52 on the substrate 10, the ambient light will be incident on the reflective portion 210. The reflective part 210 can change the direction of ambient light reflection. Compared with the first electrode 21 on the plane, the reflective part 210 can reflect more ambient light to the light-shielding part 51, thereby reducing the reflectivity of the entire display panel 100 and improving the user experience.

[0068] The substrate 10 can be configured in various ways. Optionally, the substrate 10 may include a substrate and an array substrate disposed on the substrate. The substrate may be a rigid substrate or a flexible substrate. When the substrate is a rigid substrate, it may be made of materials such as glass. When the substrate is a flexible substrate, it may be made of flexible materials such as polyimide.

[0069] The array substrate includes a driving circuit, which may include, for example, a thin-film transistor. The thin-film transistor may include a source, drain, gate, and a semiconductor portion. The driving circuit may also include signal lines such as capacitors, data lines, scan lines, power lines, and voltage reference lines.

[0070] For example, there are multiple first electrodes 21, which are arrayed on the substrate 10 along the first direction X and the second direction Y. There are multiple pixel openings 32, which are arrayed on the substrate 10 along the first direction X and the second direction Y. Each first electrode 21 is respectively disposed corresponding to each pixel opening 32, that is, the orthographic projection of each first electrode 21 on the substrate 10 and the orthographic projection of each pixel opening 32 on the substrate 10 at least partially overlap. Optionally, there are multiple filter openings 52, which are arrayed on the encapsulation layer 40 along the first direction X and the second direction Y. Each filter opening 52 is respectively disposed corresponding to each first electrode 21 and each pixel opening 32, that is, the orthographic projection of each filter opening 52 on the substrate 10, the orthographic projection of each first electrode 21 on the substrate 10, and the orthographic projection of each pixel opening 32 on the substrate 10 at least partially overlap.

[0071] Optionally, the display panel 100 also includes a second electrode layer 60, which is located between the encapsulation layer 40 and the pixel definition layer 30, and drives the light-emitting unit 33 to emit light through the interaction between the second electrode layer 60 and the first electrode 21.

[0072] The encapsulation layer 40 is, for example, a multilayer structure, comprising a plurality of film layers sequentially stacked along the thickness direction of the display panel 100. For example, the encapsulation layer 40 may include an inorganic layer, an organic layer, and an inorganic layer sequentially stacked along the thickness direction.

[0073] Optional, please continue reading Figure 3 The reflective part 210 can be formed by changing the thickness of the first electrode 21.

[0074] Please refer to the following: Figure 2 and Figure 4 , Figure 4 In another embodiment Figure 2 Sectional view at point BB.

[0075] In some other alternative embodiments, such as Figure 2 and Figure 4 As shown, a protrusion 11 is provided on the surface of the substrate 10 facing the first electrode layer 20, and at least a portion of the first electrode 21 is located on the protrusion 11 to form a reflective portion 210. In these alternative embodiments, the surface of the substrate 10 has a protrusion 11, and when the first electrode 21 is fabricated on the substrate 10, a reflective portion 210 can be formed corresponding to the position of the protrusion 11.

[0076] There are various ways to configure the substrate 10, as shown above. The substrate 10 may include a substrate and an array substrate. The array substrate may include an active layer, a metal layer, and a planarization layer. For example, if the film layer of the array substrate near the pixel definition layer 30 is a planarization layer, then the protrusion 11 can be formed on the planarization layer, that is, the planarization layer includes the protrusion 11. During the fabrication process of the display panel 100, the protrusion 11 described above can be formed by patterning the planarization layer.

[0077] In some alternative embodiments, please continue to refer to Figure 3 and Figure 4 The reflective portion 210 is conical and includes a top end 211. The orthographic projection of the top end 211 on the substrate 10 is located within the orthographic projections of the pixel opening 32 and the filter opening 52 on the substrate 10.

[0078] In these alternative embodiments, when ambient light is incident into the pixel opening 32 through the filter opening 52, the ambient light can be incident onto the top 211, so that the reflective portion 210 can reflect more ambient light to the isolation portion 31 or the light-shielding portion 51.

[0079] Optionally, the tip 211 is the part of the reflective portion 210 that is furthest from the substrate 10. That is, the distance between the tip 211 and the substrate 10 is greater than the distance between other parts of the reflective portion 210 and the substrate 10. The tip 211 can be shaped in various ways; it can be conical, platform-shaped, hemispherical, or curved. The key is that the tip 211 is the part of the reflective portion 210 that is furthest from the substrate 10.

[0080] Optionally, the reflective portion 210 further includes an outer edge 212 and an inclined surface 213 connecting the outer edge 212 and the top end 211. Along the direction from the outer edge 212 to the top end 211, the inclined surface 213 is inclined in a direction close to the encapsulation layer 40.

[0081] There are multiple ways to set the shape of the inclined surface 213, which are optional, such as... Figure 5 As shown, the inclined surface 213 is an arc-shaped surface, and the opening of the arc-shaped surface faces away from the substrate 10; or, as... Figure 6 As shown, the inclined surface 213 is an arc-shaped surface, and the opening of the arc-shaped surface faces the substrate 10, or, as... Figure 3 and Figure 4 As shown, the inclined surfaces 213 form a frustum shape. Optionally, the outer edge 212 is connected to the inner wall surface of the isolation portion 31 facing the pixel opening 32 to increase the distribution area of ​​the inclined surfaces 213 within the pixel opening 32, so that the inclined surfaces 213 can reflect more ambient light to the light-shielding portion 51, further reducing the reflectivity of the display panel 100 and improving the user experience.

[0082] In some alternative embodiments, the orthographic projection of the top 211 on the substrate 10 is located at the center of the orthographic projection of the pixel opening 32 and / or the filter opening 52 on the array substrate 10.

[0083] When the orthographic projection of the top 211 on the substrate 10 is located at the center of the orthographic projection of the pixel opening 32 on the substrate 10, the reflective portion 210 can change the reflection path of the ambient light to a large extent, so that more of the ambient light incident on the pixel opening 32 can be reflected by the reflective portion 210 to the light-shielding portion 51, further reducing the reflectivity of the display panel 100 and improving the user experience.

[0084] When the orthographic projection of the top 211 on the substrate 10 is located at the center of the orthographic projection of the filter opening 52 on the substrate 10, more ambient light incident from the filter opening 52 onto the reflective portion 210 can be reflected by the reflective portion 210 to the light-shielding portion 51, further reducing the reflectivity of the display panel 100 and improving the user experience.

[0085] In some optional embodiments, the center of the orthographic projection of the pixel opening 32 on the substrate 10 and the center of the orthographic projection of the filter opening 52 on the substrate 10 overlap. On the one hand, this allows more light emitted by the light-emitting unit 33 within the pixel opening 32 to exit through the filter unit 53 within the filter opening 52. On the other hand, when the orthographic projection of the reflective portion 210 on the substrate 10 is located at the center of the orthographic projection of the pixel opening 32 on the substrate 10, the orthographic projection of the reflective portion 210 on the substrate 10 is also located at the center of the orthographic projection of the filter opening 52 on the substrate 10, which can further reduce the reflectivity of the display panel 100 and improve the user experience.

[0086] In some alternative embodiments, please continue to refer to Figure 3 and Figure 4 The inclined surfaces 213 form a frustum shape, and the top end 211 has a predetermined height relative to the surface of the substrate 10 facing the first electrode layer 20, so that light incident near the top end 211 in a direction perpendicular to the plane of the substrate 10 can be reflected to the light-shielding portion 51. The plane of the substrate 10 is parallel to the display surface of the display panel. When the display panel includes a display plane and a display curved surface, the plane of the substrate 10 is parallel to the display plane of the display panel. The area near the top end 211 can be the area within a predetermined distance of the top end 211 and its surroundings. For example, the area near the top end 211 is the area within 1 mm of the top end 211. Alternatively, any area where the distance to the top end 211 is less than the distance to the edge 212 can be considered as the area near the top end 211.

[0087] In these optional embodiments, when the distance between the top end 211 and the upper surface of the substrate 10 is a preset height, when ambient light is incident from the filter opening 52 into the pixel opening 32 and incident along the thickness direction onto the top end 211, the ambient light can be reflected to the light-shielding part 51. For example, the ambient light can be reflected to the edge of the light-shielding part 51 facing the pixel opening 32, or the ambient light can be reflected to other parts of the light-shielding part 51.

[0088] Please continue reading. Figure 5 The inclined surface 213 is an arc-shaped surface, and the opening of this arc-shaped surface faces away from the substrate 10. Along the direction from the outer edge 212 to the top edge 211, the curvature of the inclined surface 213 tends to increase. For example, along the direction from the outer edge 212 to the top edge 211, the curvature of the inclined surface 213 gradually increases or increases in a step-like manner. Figure 5 As shown, when the inclined surface 213 is an arc-shaped surface, the cross-section of the inclined surface 213 is an arc-shaped curve, and the curvature of the arc-shaped curve gradually increases along the direction from the outer edge 212 to the top 211.

[0089] In these embodiments, because the curvature of the inclined surface 213 tends to increase along the direction from the outer edge 212 to the top 211, the reflected light rays incident perpendicular to the surface of the substrate 10 gradually tilt toward the light-shielding portion 51 in the direction from the outer edge 212 to the top 211, so that more reflected light rays can be blocked by the light-shielding portion 51, and the reflective portion 210 can reflect more ambient light to the light-shielding portion 51, thereby reducing the reflectivity of the entire display panel 100 and improving the user experience.

[0090] When the material of the first electrode 21 is different, the reflectivity of the first electrode 21 is different, so the value of the preset height can be different. As long as the distance between the top end 211 and the upper surface of the substrate 10 is the preset height, the light incident on the top end 211 along the thickness direction can be reflected to the light-shielding part 51.

[0091] There are various material options for the first electrode 21. For example, the first electrode 21 can be made of a light-transmitting material. In some alternative embodiments, the first electrode 21 may be made of a metallic material, which has good reflective properties and can improve the reflectivity of the first electrode 21. For example, if the first electrode 21 is a reflective electrode, it can better improve the reflectivity of the display panel 100. Optionally, the orthographic projection of the reflective portion 210 on the substrate 10 overlaps with the orthographic projection of the pixel opening 32 or the filter opening 52 on the substrate 10 to further increase the amount of light reflected by the reflective portion 210 to the isolation portion 31 or the light-shielding portion 51. Optionally, the material of the first electrode 21 may include at least one of magnesium and silver, so that the first electrode 21 not only has good reflective properties but also good electrical conductivity.

[0092] In some optional embodiments, the orthographic projection of the filter opening 52 on the substrate 10 lies within the orthographic projection of the pixel opening 32 on the substrate 10. That is, the orthographic projection size of the filter opening 52 is less than or equal to the orthographic projection size of the pixel opening 32, ensuring that the light-shielding part 51 has a sufficient area so that more ambient light can be reflected to the light-shielding part 51, thereby further reducing the reflectivity of the display panel 100.

[0093] Optionally, the projected area of ​​the filter opening 52 on the substrate 10 is smaller than the projected area of ​​the pixel opening 32 on the substrate 10. This increases the distribution area of ​​the light-shielding portion 51, allowing more ambient light to be reflected to the light-shielding portion 51, thereby further reducing the reflectivity of the display panel 100.

[0094] A second aspect of the present invention also provides a display device including the display panel 100 of any of the first aspect embodiments described above. Since the display device provided by the second aspect of the present invention includes the display panel 100 of any of the first aspect embodiments described above, the display device provided by the second aspect of the present invention has the beneficial effects of the display panel 100 of any of the first aspect embodiments described above, which will not be elaborated further here.

[0095] The display devices in the embodiments of the present invention include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0096] Please see Figure 7 , Figure 7 This is a schematic flowchart illustrating a method for manufacturing a display panel 100 according to an embodiment of this application. The display panel 100 can be any of the display panels 100 provided in the first aspect embodiment described above.

[0097] like Figures 1 to 7 As shown, the method for manufacturing the display panel 100 provided in this application embodiment includes:

[0098] Step S01: A first electrode layer 20 is prepared on the substrate 10. The first electrode layer 20 includes a first electrode 21. The surface of the first electrode 21 facing away from the substrate 10 protrudes in the direction facing away from the substrate 10 to form a reflective portion 210.

[0099] Step S02: A pixel definition layer 30 is prepared on the side of the first electrode layer 20 away from the substrate 10. The pixel definition layer 30 includes an isolation portion 31 and a pixel opening 32 formed by the isolation portion 31. At least a portion of the reflective portion 210 is exposed through the pixel opening 32.

[0100] Step S03: Prepare an encapsulation layer 40 on the side of the pixel definition layer 30 that is opposite to the first electrode layer 20.

[0101] Step S04: A filter layer 50 is prepared on the side of the encapsulation layer 40 away from the pixel definition layer 30. The filter layer 50 includes a light-shielding portion 51 and a filter opening 52 formed by the light-shielding portion 51. The orthographic projection of the filter opening 52 on the substrate 10 and the orthographic projection of the pixel opening 32 on the substrate 10 are at least partially overlapped. At least a portion of the reflective portion 210 is exposed through the filter opening 52.

[0102] In the fabrication method provided in this application embodiment, a first electrode layer 20 is first fabricated on a substrate 10. The first electrode 21 of the first electrode layer 20 includes a reflective portion 210. In the subsequent step S02, when the pixel definition layer 30 is fabricated, the reflective portion 210 can be exposed through the pixel opening 32. In the subsequent step, when the filter layer 50 is fabricated, at least a portion of the reflective portion 210 can also be exposed through the filter opening 52. Therefore, ambient light incident through the filter opening 52 can reach the reflective portion 210. The reflective portion 210 can change the reflection direction of ambient light, reflecting more ambient light to the light-shielding portion 51, thereby reducing the reflectivity of the entire display panel 100 and improving the user experience.

[0103] There are several ways to form the reflective portion 210 in step S01. For example, the reflective portion 210 can be formed on the first electrode 21 by changing the thickness of the first electrode 21.

[0104] In some other alternative embodiments, such as Figure 8 As shown, step S01 includes:

[0105] Step S011: A first mask plate 70 is disposed on the substrate 10. The first mask plate 70 has a first body region 71 and a first mask region 72 for forming the reflective portion 210. The light transmittance of the first mask region 72 gradually decreases along the direction from the edge to the center.

[0106] Step S012: Irradiate the first mask plate 70 toward the substrate 10 on the side opposite to the substrate 10 to form the protrusion 11.

[0107] Step S013: A first electrode layer 20 is prepared on the substrate 10, and at least a portion of the first electrode 21 is located on the protrusion 11 to form a reflective portion 210.

[0108] In these optional embodiments, a first mask 70 is first formed on the substrate 10 via step S011. The first mask region 72 of the first mask 70 is used to form the protrusion 11 in step S012. Since the transmittance of the first mask 70 gradually decreases along the direction from the edge to the center of the first mask region 72, the amount of laser light passing through the first mask 70 along the direction from the edge to the center of the first mask region 72 gradually decreases, thus enabling the protrusion 11 to be formed on the substrate 10. In step S013, when the first electrode layer 20 is formed on the substrate 10, the position of the first electrode layer 20 corresponding to the protrusion 11 is higher to form the reflective portion 210.

[0109] In some alternative embodiments, the substrate 10 includes a driving circuit and a planarization layer disposed on one side of the driving circuit. In this case, a via 12 needs to be fabricated on the planarization layer to connect the first electrode 21 and the driving circuit via 12.

[0110] Optional, such as Figures 9 to 11 As shown, step S01 includes:

[0111] Step S011': As Figure 10 As shown, a first mask plate 70 is provided on the substrate 10. The first mask plate 70 has a first body region 71, a first mask region 72 for forming a reflective portion 210, and a first light-transmitting region 73 for forming a via 12 in the planarization layer. The light transmittance of the first mask region 72 gradually decreases along the direction from the edge to the center of the first mask region 72. The light transmittance of the first light-transmitting region 73 is greater than that of the first mask region 72 and the first body region 71.

[0112] Step S012': As Figure 11 As shown, a laser is irradiated onto the first mask 70 on the side opposite to the substrate 10 to form a protrusion 11 and a via 12 in the planarization layer.

[0113] Step S013': A first electrode layer 20 is prepared on the substrate 10, at least a portion of the first electrode 21 is located on the protrusion 11 to form a reflective portion 210, and at least another portion of the first electrode 21 is electrically connected to the driving circuit via the via 12.

[0114] In these optional embodiments, in step S011', the first mask 70 further includes a first light-transmitting region 73, which has a high light transmittance. Therefore, in step S012', a via 12 can be formed on the planarization layer through the first light-transmitting region 73. This allows the first electrode 21 in step S013' to be interconnected with the driving circuit through the via 12.

[0115] Optionally, the protrusions 11 can be formed on the planarization layer by laser etching, exposure, and development. Optionally, the material of the planarization layer can be a photoresist material.

[0116] Optionally, the transmittance of the first body region 71 on the first mask plate 70 is equal to the minimum transmittance of the first mask region 72, so as to form a relatively flat area in the planarization layer corresponding to the first body region 71, and the height of this part is lower than the height of the part corresponding to the first mask region 72.

[0117] In the above embodiments, the via 12 and the protrusion 11 can be formed in the same step, which can simplify the manufacturing process of the display panel 100 and improve the manufacturing efficiency of the display panel 100.

[0118] In some other alternative embodiments, such as Figures 12 to 16 As shown, the through hole 12 and the protrusion 11 can also be fabricated in different process steps. Optionally, step S01 includes:

[0119] Step S011”: As Figure 13 As shown, a second mask plate 80 is disposed on the substrate 10. The second mask plate 80 includes a second body region 81 and a second light-transmitting region 82 for forming vias 12 in the planarization layer. The light transmittance of the second light-transmitting region 82 is greater than that of the second body region 81.

[0120] Step S012”: As Figure 14 As shown, a laser is irradiated onto the side of the second mask plate 80 opposite to the substrate 10 to form a via 12 in the planarization layer.

[0121] Step S013”: As Figure 15 As shown, a third mask plate 90 is disposed on the substrate 10. The third mask plate 90 includes a third body region 91 and a third mask region 92. The light transmittance of the third mask region 92 gradually decreases along the direction from the edge to the center.

[0122] Step S014”: As Figure 16 As shown, a laser is irradiated onto the third mask 90 on the side facing away from the substrate 10 to form a protrusion 11 in the planarization layer.

[0123] Step S015”: A first electrode layer 20 is prepared on the substrate 10, at least a portion of the first electrode 21 is located on the protrusion 11 to form a reflective portion 210, and at least another portion of the first electrode 21 is electrically connected to the driving circuit via the via 12.

[0124] In these alternative embodiments, the vias 12 and protrusions 11 are fabricated using two different masks through two different process steps, which can improve the fabrication accuracy of the display panel 100.

[0125] Optionally, the transmittance of the third body region 91 is equal to the maximum transmittance of the third mask region 92. This creates a relatively flat area in the planarization layer corresponding to the third body region 91, and the height of this area is lower than the height of the corresponding area of ​​the third mask region 92.

[0126] The embodiments described above are not exhaustive, nor do they limit the invention to the specific embodiments described. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, include: substrate; A first electrode layer is located on the substrate, and the first electrode layer includes a first electrode; A pixel definition layer is located on the substrate, the pixel definition layer includes an isolation portion and a pixel opening formed by the isolation portion, the pixel opening exposing at least a portion of the first electrode; The encapsulation layer is located on the side of the pixel definition layer opposite to the first electrode layer; A filter layer is located on the side of the encapsulation layer opposite to the pixel definition layer. The filter layer includes a light-shielding portion and a filter opening formed by the light-shielding portion. The orthographic projection of the filter opening on the substrate and the orthographic projection of the pixel opening on the substrate are at least partially overlapped. Wherein, the surface of the first electrode facing away from the substrate protrudes in the direction toward the filter layer to form a reflective portion, and at least a portion of the orthogonal projection of the reflective portion on the substrate is located within the orthogonal projections of the pixel opening and the filter opening on the substrate; The reflective portion is conical and includes a top end, the orthographic projection of the top end on the substrate is located within the orthographic projections of the pixel opening and the filter opening on the substrate; There is a preset height between the top end and the surface of the substrate facing the first electrode layer, so that light incident near the top end in a direction perpendicular to the plane of the substrate can be reflected to the light-shielding part; The reflective portion further includes an outer edge and an inclined surface connecting the outer edge and the top end. Along the direction from the outer edge to the top end, the inclined surface is inclined in a direction close to the encapsulated layer.

2. The display panel according to claim 1, characterized in that, The outer edge is connected to the inner wall surface of the isolation portion facing the pixel opening.

3. The display panel according to claim 1, characterized in that, The orthogonal projection of the top end onto the substrate is located at the center of the orthogonal projection of the pixel opening or the filter opening onto the substrate.

4. The display panel according to claim 3, characterized in that, The center of the pixel opening projected onto the substrate and the center of the filter opening projected onto the substrate overlap.

5. The display panel according to claim 1, characterized in that, The inclined surfaces form a frustum shape.

6. The display panel according to claim 1, characterized in that, The inclined surface is an arc-shaped surface, and the opening of the inclined surface is away from the substrate.

7. The display panel according to claim 1, characterized in that, The curvature of the inclined surface tends to increase along the direction from the outer edge to the top.

8. The display panel according to claim 1, characterized in that, The substrate has a protrusion on its surface facing the first electrode layer, and at least a portion of the first electrode is located on the protrusion to form the reflective portion.

9. The display panel according to any one of claims 1-8, characterized in that, The first electrode is a reflective electrode.

10. The display panel according to claim 9, characterized in that, The material of the first electrode includes metallic materials.

11. The display panel according to claim 9, characterized in that, The material of the first electrode includes at least one of magnesium and silver.

12. The display panel according to any one of claims 1-11, characterized in that, The orthogonal projection of the filter opening on the substrate lies within the orthogonal projection of the pixel opening on the substrate.

13. The display panel according to claim 12, characterized in that, The projected area of ​​the filter aperture on the substrate is smaller than the projected area of ​​the pixel aperture on the substrate.

14. A display device, characterized in that, Includes the display panel as described in any one of claims 1-13.

15. A method for manufacturing a display panel according to any one of claims 1 to 13, characterized in that, include: A first electrode layer is prepared on a substrate. The first electrode layer includes a first electrode, and the surface of the first electrode facing away from the substrate protrudes in a direction away from the substrate to form a reflective portion. A pixel definition layer is prepared on the substrate. The pixel definition layer includes an isolation portion and a pixel opening formed by the isolation portion, and at least a portion of the reflective portion is exposed through the pixel opening. An encapsulation layer is prepared on the side of the pixel definition layer opposite to the first electrode layer; A filter layer is prepared on the side of the encapsulation layer opposite to the pixel definition layer. The filter layer includes a light-shielding portion and a filter opening formed by the light-shielding portion. The orthographic projection of the filter opening on the substrate and the orthographic projection of the pixel opening on the substrate are at least partially overlapped. At least a portion of the reflective portion is exposed through the filter opening.

16. The method according to claim 15, characterized in that, The steps for fabricating the first electrode layer on the substrate include: A first mask is disposed on a substrate. The first mask has a first body area and a first mask area for forming the reflective portion. The light transmittance of the first mask area gradually decreases along the direction from the edge of the first mask area to the center. A laser is irradiated onto the side of the first mask facing away from the substrate to form a protrusion; The first electrode layer is prepared on the substrate, and at least a portion of the first electrode is located on the protrusion to form the reflective portion.

17. The method according to claim 15, characterized in that, The substrate includes a driving circuit and a planarization layer disposed on one side of the driving circuit. The step of fabricating a first electrode layer on the substrate includes: A first mask is disposed on a substrate. The first mask has a first body area, a first mask area for forming the reflective portion, and a first light-transmitting area for forming vias in the planarization layer. The light transmittance of the first mask area gradually decreases along the direction from the edge to the center of the first mask area. The light transmittance of the first light-transmitting area is greater than that of the first mask area and the first body area. A laser is irradiated toward the substrate on the side of the first mask away from the substrate to form protrusions and vias in the planarization layer; The first electrode layer is prepared on the substrate, at least a portion of the first electrode is located on the protrusion to form the reflective portion, and at least another portion of the first electrode is electrically connected to the driving circuit via the via.

18. The method according to claim 17, characterized in that, The transmittance of the first body region is equal to the maximum transmittance of the first mask region.

19. The method according to claim 15, characterized in that, The substrate includes a driving circuit and a planarization layer disposed on one side of the driving circuit. The step of fabricating a first electrode layer on the substrate includes: A second mask is disposed on the substrate. The second mask includes a second body region and a second light-transmitting region for forming vias in the planarization layer. The light transmittance of the second light-transmitting region is greater than that of the second body region. A laser is irradiated toward the substrate on the side of the second mask away from the substrate to form a via in the planarization layer; A third mask is disposed on the substrate. The third mask includes a third body region and a third mask region. The transmittance of the third mask region gradually decreases along the direction from the edge to the center. A laser is irradiated toward the substrate on the side of the third mask away from the substrate to form a protrusion in the planarization layer; The first electrode layer is prepared on the substrate, at least a portion of the first electrode is located on the protrusion to form the reflective portion, and at least another portion of the first electrode is electrically connected to the driving circuit via the via.

20. The method according to claim 19, characterized in that, The transmittance of the third body region is equal to the maximum transmittance of the third mask region.

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