Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a light-emitting device layer and a first reflection layer. The light-emitting device layer is formed on one side of the substrate and comprises a plurality of light-emitting units. The light-emitting unit has a light-emitting side and a backlight side arranged oppositely. The first reflection layer is formed on the side of the light-emitting device layer away from the substrate and comprises a body part and a plurality of first openings. The first openings expose part of the light-emitting units. The body part is used for reflecting part of the light emitted from the light-emitting side to the backlight side to form double-sided display. The display panel provided by the application can realize double-sided display and has simple structure and low cost.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel and a display device. Background Technology

[0002] With the development of display technology, the functional requirements for display devices are becoming increasingly demanding. Dual-sided display panels, featuring dual-sided display capabilities, have become one of the development trends in display technology. As the name suggests, dual-sided display panels can achieve display on both sides, thereby extending the screen space and providing users with a better experience. However, existing dual-sided display panels require two sets of light-emitting devices, making the manufacturing process complex. Summary of the Invention

[0003] This application provides a display panel and a display device. The display panel can achieve double-sided display and has a simple structure and low cost.

[0004] An embodiment of the first aspect of this application provides a substrate;

[0005] A light-emitting device layer is formed on one side of the substrate and includes a plurality of light-emitting units, wherein the light-emitting units have light-emitting sides and backlight sides disposed opposite to each other;

[0006] A first reflective layer is formed on the side of the light-emitting device layer facing away from the substrate. It includes a body portion and a plurality of first openings, each of which exposes a portion of the light-emitting unit. The body portion reflects a portion of the light emitted from the light-emitting side to the backlight side, thereby forming a double-sided display.

[0007] According to an embodiment of a first aspect of the present invention, the substrate includes a substrate, a driving device layer, a first insulating layer, and a second insulating layer. The second insulating layer is located on the side of the first insulating layer opposite to the substrate. The first insulating layer includes a plurality of second openings, and a second reflective layer is formed on the sidewall of each second opening. The second reflective layer is used to reflect a portion of the light reflected by the body portion back to the backlight side.

[0008] According to any of the foregoing embodiments of the first aspect of the present invention, the aperture of the second opening gradually increases from the end closer to the substrate to the end farther away from the substrate;

[0009] The light-emitting device layer includes a reflective portion, and some of the light emitted from the light-emitting side is reflected sequentially by the first reflective layer, the second reflective layer and the reflective portion and then emitted away from the light-emitting side.

[0010] Preferably, the orthographic projection of the reflective portion on the substrate is located within the orthographic projection of the second opening on the substrate, and the second opening coincides with the center of the reflective portion.

[0011] According to any of the foregoing embodiments of the first aspect of the present invention, in a cross-section along the thickness direction of the display panel, the edge formed by the sidewall of the second opening is straight, and the angle between the sidewall of the second opening and the plane perpendicular to the thickness direction of the display panel is α, where 25°≤α≤75°; or,

[0012] In the cross-section of the second opening along the thickness direction of the display panel, the edge formed by the sidewall of the second opening is arc-shaped, and the arc protrudes to the side away from the second opening.

[0013] According to any of the foregoing embodiments of the first aspect of the present invention, the display panel further includes a spacer layer located on the side of the first reflective layer facing the substrate;

[0014] The spacer layer includes a spacer structure disposed opposite to the light-emitting unit, the spacer structure including a third opening disposed opposite to the first opening, and a reflective structure surrounding the third opening;

[0015] In a cross-section perpendicular to its own circumferential direction, the edge of the reflective structure away from the substrate is arc-shaped, and the arc protrudes towards the side away from the substrate.

[0016] Alternatively, the cross-sectional shape of the reflective structure along its own circumferential direction is trapezoidal, and both base angles of the trapezoid are acute angles.

[0017] According to any of the foregoing embodiments of the first aspect of the present invention, a filter layer is further included, the filter layer including a first filter layer and / or a second filter layer, the first filter layer being located on the side of the first reflective layer away from the substrate, and the first filter layer including a first filter portion disposed opposite to the first opening;

[0018] The second filter layer is located on the side of the first insulating layer facing the substrate, and the second filter layer includes a second filter portion disposed opposite to the second opening.

[0019] According to any of the foregoing embodiments of the first aspect of the present invention, the light-emitting unit includes a first electrode, a light-emitting layer, and a second electrode stacked on the reflective portion along a direction away from the substrate, the driving device layer includes a thin-film transistor, the first electrode is electrically connected to the second reflective layer, and the second reflective layer is electrically connected to the thin-film transistor.

[0020] According to any of the foregoing embodiments of the first aspect of the present invention, the light-emitting unit includes a light-emitting layer and a second electrode stacked on the reflective portion along a direction away from the substrate, the material of the reflective portion is metal, the driving device layer includes a thin-film transistor, the reflective portion is electrically connected to the second reflective layer, and the second reflective layer is electrically connected to the thin-film transistor.

[0021] According to any of the foregoing embodiments of the first aspect of the present invention, the driving device layer includes a driving device and a trace, the driving device is connected to the trace, the driving device includes a thin-film transistor and a capacitor, the area of ​​the trace opposite to the second opening is made of a transparent material, or the trace is disposed around the second opening.

[0022] An embodiment of the second aspect of this application also provides a dual-sided display device, including any of the dual-sided display panels provided in the first aspect of this application.

[0023] The display panel provided in this application includes a substrate and a light-emitting device layer and a first reflective layer sequentially formed on the substrate. The light-emitting device layer includes multiple light-emitting units, each having a light-emitting side and a backlight side. The light-emitting side is located on the side of the light-emitting unit facing away from the substrate, and the backlight side is located on the side of the light-emitting unit facing the substrate. The light-emitting side and the backlight side are arranged opposite to each other, and the light-emitting unit emits light through the light-emitting side. The first reflective layer includes a body portion and a first opening. The first opening exposes at least a portion of the light-emitting side, allowing some of the light emitted by the light-emitting unit through the light-emitting side to directly exit through the first opening, forming top-emitting light; and some light is reflected by the body portion and exits through the backlight side, forming bottom-emitting light, thereby achieving double-sided display. The display panel includes a first side and a second side, with the first side closer to the light-emitting side and the second side closer to the backlight side. Both the first and second sides of the display panel can be used for display. The first side is the light-emitting surface of the top-emitting display panel, and the second side is the light-emitting surface of the bottom-emitting display panel. In the display panel provided in this application, by adding a first reflective layer inside the display panel, part of the light emitted by the light-emitting unit on the light-emitting side is reflected to the backlight side, thereby forming a double-sided display panel with top-emitting and bottom-emitting functions.

[0024] Meanwhile, the display panel provided in this application includes a first pixel displayed on a first side of the display panel and a second pixel displayed on a second side of the display panel. The second pixel is formed by reflecting light emitted from the light-emitting side through a first reflective layer, so that the first pixel and the second pixel of the display panel can share the light-emitting unit, which simplifies the structure of the display panel and reduces the production cost. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the film layer structure of a double-sided display panel provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the film layer structure of another double-sided display panel provided in an embodiment of this application;

[0028] Figure 3 This is a top view of the film layer structure of another double-sided display panel provided in this application embodiment;

[0029] Figure 4 This is a schematic diagram of the film layer structure of another double-sided display panel provided in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of a partial film layer structure of another double-sided display panel provided in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of a partial film layer structure of another double-sided display panel provided in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of a partial film layer structure of another double-sided display panel provided in an embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the film layer structure of another double-sided display panel provided in an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the film layer structure of another double-sided display panel provided in an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the film layer structure of another double-sided display panel provided in an embodiment of this application;

[0036] Figure 11 This is a schematic diagram of the structure of a double-sided display device provided in an embodiment of this application.

[0037] In the attached image:

[0038] 1-Display panel; 11-Substrate; 111-Substrate; 12-Light-emitting device layer; 121-Light-emitting unit; 1211-First electrode; 1212-Light-emitting layer; 1213-Second electrode; 122-Reflective portion; 13-First reflective layer; 131-Body portion; 132-First opening; 112-Driven device layer; 1121-Driven device; 1122-Trace; 1123-Active layer; 1124-Gate insulating layer; 1125-First metal layer; 1126-Capacitor dielectric layer; 1127-Second metal layer; 1128-Third insulating layer; 1129-Third Metal layer; 1130-Power line; 1131-Data line; 1132-Scan line; 1133-Reset signal line; 1134-Light emission control signal line; 113-First insulating layer; 1131-Second opening; 114-Second insulating layer; 115-Pixel definition layer; 14-Second reflective layer; 15-Encapsulation layer; 16-Spacer layer; 161-Spacer structure; 1611-Third opening; 17-Filter layer; 171-First filter layer; 1711-First filter section; 172-Second filter layer; 1721-Second filter section; 18-Black matrix layer; 2-Display device. Detailed Implementation

[0039] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples thereof.

[0040] 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.

[0041] The inventors discovered through research that the complexity of existing double-sided display panel manufacturing processes stems from the fact that these panels achieve double-sided display by simultaneously incorporating both top-emitting and bottom-emitting light-emitting units. This requires two sets of light-emitting units within the panel—one for top illumination and the other for bottom illumination—resulting in complex and costly manufacturing processes. Based on this research, the inventors have provided a display panel and display device that simplify the panel structure and reduce costs while achieving double-sided display.

[0042] To better understand this application, the following will be combined with... Figures 1 to 11 The display panel and display device according to embodiments of this application will be described in detail.

[0043] Please see Figure 1 This application provides a display panel 1, including a substrate 11, a light-emitting device layer 12, and a first reflective layer 13. The light-emitting device layer 12 is formed on the substrate 11 and includes a plurality of light-emitting units 121, each having a light-emitting side and a backlight side disposed opposite to each other. The first reflective layer 13 is formed on the side of the light-emitting device layer 12 away from the substrate 11, and includes a body portion 131 and a plurality of first openings 132. The first openings 132 expose a portion of the light-emitting units 121, and the body portion 131 is used to reflect a portion of the light emitted from the light-emitting side to the backlight side, thereby forming a double-sided display.

[0044] The display panel 1 provided in this application includes a substrate 11 and a light-emitting device layer 12 and a first reflective layer 13 sequentially formed on the substrate 11. The light-emitting device layer 12 includes a plurality of light-emitting units 121, each having a light-emitting side and a backlight side. The light-emitting side is located on the side of the light-emitting unit 121 facing away from the substrate 11, and the backlight side is located on the side of the light-emitting unit 121 facing the substrate 11. The light-emitting side and the backlight side are arranged opposite to each other, and the light-emitting unit 121 emits light through the light-emitting side. The first reflective layer 13 includes a body portion 131 and a first opening 132. The first opening 132 exposes at least a portion of the light-emitting side, allowing some of the light emitted by the light-emitting unit 121 through the light-emitting side to be directly emitted through the first opening 132, forming top-emitting light; and some light is reflected by the body portion 131 and emitted through the backlight side, forming bottom-emitting light, thereby achieving double-sided display. The display panel 1 includes a first side and a second side. The first side is close to the light-emitting side, and the second side is close to the backlight side. Both the first and second sides of the display panel 1 can be used for display. The first side is the top-emitting light-emitting surface of the display panel 1, and the second side is the bottom-emitting light-emitting surface of the display panel 1. In the display panel 1 provided in this application, by adding a first reflective layer 13 inside the display panel 1, part of the light emitted by the light-emitting unit 121 from the light-emitting side is reflected to the backlight side, thereby forming a double-sided display panel 1 with top-emitting and bottom-emitting functions.

[0045] Meanwhile, the display panel 1 provided in this application includes a first pixel displayed on a first side of the display panel 1 and a second pixel displayed on a second side of the display panel 1. The second pixel is formed by reflecting light emitted from the light-emitting side through the first reflective layer 13, so that the first pixel and the second pixel of the display panel 1 can share the light-emitting unit 121, which simplifies the structure of the display panel 1 and reduces the production cost.

[0046] In the above embodiments, the material of the first reflective layer 13 may be at least one of silver (Ag), molybdenum (Mo), titanium (Ti), aluminum (Al), and magnesium (Mg).

[0047] In one feasible implementation, such as Figure 2 As shown, the substrate 11 includes a substrate 111, a driving device layer 112, a first insulating layer 113 and a second insulating layer 114. The second insulating layer 114 is located on the side of the first insulating layer 113 away from the substrate 111. The first insulating layer 113 includes a plurality of second openings 1131. A second reflective layer 14 is formed on the sidewall of the second opening 1131. The second reflective layer 14 is used to reflect part of the light reflected by the body portion 131 back to the backlight side.

[0048] In the above embodiment, the substrate 11 includes a substrate 111 and a first insulating layer 113 and a second insulating layer 114 formed on one side of the substrate 111. The second insulating layer 114 includes a second opening 1131, and a second reflective layer 14 is formed on the sidewall of the second opening 1131. The second reflective layer 14 is used to receive part of the light reflected by the body portion 131 and reflect the light again, so that it is emitted from the backlight side of the display panel 1 to form a double-sided display. The second reflective layer 14 can reflect the large-angle light reflected by the body portion 131 again to converge the light, thereby obtaining a better bottom-emitting display effect.

[0049] In the above embodiment, the thickness of the first insulating layer 113 is greater than or equal to 2 micrometers along the thickness direction of the display panel 1, thereby increasing the area of ​​the second reflective layer 14 covering the sidewall of the second opening 1131 and enhancing the reflection effect.

[0050] In the above embodiments, the substrate 111 is made of a transparent material. The substrate 111 can be a rigid substrate 111, and the material can be glass; or it can be a flexible substrate 111. When it is a flexible substrate 111, it can be a stacked inorganic layer, an organic layer, and an inorganic layer, or it can be a stacked organic layer, an inorganic layer, an organic layer, and an inorganic layer. The substrate 11 also includes a driving device layer 1121, which is formed on the substrate 111.

[0051] In the above embodiments, the first insulating layer 113 can be made of a photosensitive resin material with good light transmittance, specifically acrylic resin, polyimide, silicone, or fluorene-based resin material. In the above embodiments, the second insulating layer 114 can be made of an organic material with good light transmittance to achieve planarization, making the side of the second insulating layer 114 facing away from the substrate 111 flatter, thereby ensuring the flatness of the inner film layer of the light-emitting unit 121 and achieving a better display effect.

[0052] In the display panel 1 provided in this application, a driving device layer 112 is formed on a substrate 111. The driving device layer 112 is located between the substrate 111 and the first insulating layer 113, and includes a driving device 1121 and a wiring 1122. The driving device 1121 includes a thin-film transistor and a capacitor. Specifically, the driving device layer 112 includes an active layer 1123, a gate insulating layer 1124, a first metal layer 1125, a capacitor dielectric layer 1126, a second metal layer 1127, a third insulating layer 1128, and a third metal layer 1129 sequentially formed on the substrate 111. The active layer 1123 can be made of single-crystal silicon, polycrystalline silicon, or oxide semiconductor. When it is an oxide semiconductor, it can specifically be indium gallium zinc oxide (IGZO) or indium tin zinc oxide (ITZO). The gate insulating layer 1124 can be made of at least one of silicon nitride and silicon oxide. The first metal layer 1125 is used to form the gate and the lower electrode of the capacitor. The material of the first metal layer 1125 can be at least one of molybdenum (Mo), titanium (Ti), and aluminum (Al). The capacitor dielectric layer 1126 can be at least one of silicon nitride and silicon oxide. The second metal layer 1127 is used to form the upper electrode of the capacitor. The material of the second metal layer 1127 is at least one of molybdenum (Mo), titanium (Ti), and aluminum (Al). The third insulating layer 1128 can be at least one of silicon nitride and silicon oxide. The third metal layer 1129 is used to form the source and drain. The material of the third metal layer 1129 is at least one of molybdenum (Mo), titanium (Ti), and aluminum (Al).

[0053] like Figure 3 As shown, the traces 1122 in the driving device layer 112 include power lines 1130, data lines 1131, scan lines 1132, reset signal lines 1133, and light emission control signal lines 1134, etc., which are not particularly limited in this application. The traces 1122 are used to connect to the driving device 1121 to provide electrical signals to the driving device 1121 and control the operation of the light emission unit 121 through the driving device 1121. The area of ​​the trace 1122 opposite to the first opening 132 is made of transparent material, or the trace 1122 is arranged around the first opening 132. This ensures that the trace 1122 does not block the first opening 132, thereby improving the light emission effect on the substrate 111 side of the display panel 1.

[0054] like Figure 3 As shown, in the driving device layer 112, the orthographic projection of the driving device 1121 on the substrate 111 exposes part or all of the second opening 1131, the area of ​​the trace 1122 opposite to the second opening 1131 is made of transparent material, or the trace 1122 is arranged around the second opening 1131.

[0055] In one feasible implementation, such as Figure 4 As shown, the aperture of the second opening 1131 gradually increases from the end near the substrate 11 to the end away from the substrate 11. The light-emitting device layer 12 includes a reflective portion 122 with a reflective function. Some of the light emitted from the light-emitting side is reflected in sequence by the first reflective layer 13, the second reflective layer 14 and the reflective portion 122 and then emitted in a direction away from the light-emitting side.

[0056] In the above embodiment, the aperture of the second opening 1131 gradually increases from the end near the substrate 11 to the end away from the substrate 11, so that the second reflective layer 14 on the sidewall of the second opening 1131 is disposed facing the light-emitting unit 121. A portion of the light L emitted by the light-emitting unit 121 toward the side away from the substrate 111 irradiates the first reflective layer 13, is reflected by the body portion 131 in the first reflective layer 13 and then irradiates the second reflective layer 14, is reflected by the second reflective layer 14 and then irradiates the reflective portion 122, and is then reflected by the reflective portion 122 and emitted from the backlight side to form bottom light emission.

[0057] In the above embodiment, by providing the second reflective layer 14 and the reflective part 122, the first reflective layer 13, the second reflective layer 14 and the reflective part 122 together constitute a light reflection assembly. The light emitted by the light-emitting unit 121 is partially reflected by the body part 131 of the first reflective layer 13 to form reflected light. The reflected light can be reflected twice by the second reflective layer 14 and the reflective part 122 and then converged, thereby improving the display quality of the light emitted from the substrate 111 side in the display panel 1.

[0058] In the aforementioned display panel 1, the first pixel and the second pixel are stacked along the thickness direction of the display panel 1, so that the aperture ratio of the first pixel and the aperture ratio of the second pixel do not affect each other, thereby improving the aperture ratio of the display panel 1 and thus improving the display effect of the display panel 1. At the same time, the second pixel shares the driving device 1121 and the light-emitting unit 121 with the first pixel, which simplifies the fabrication of the structure within the display panel 1, helps to save costs, and allows for a thinner and lighter design.

[0059] In one feasible implementation, the orthographic projection of the reflective portion 122 on the substrate 111 is located within the orthographic projection of the second opening 1131 on the substrate 111, and the second opening 1131 coincides with the center of the reflective portion 122.

[0060] In the above embodiment, the light reflected by the reflective part 122 is emitted from the substrate 111 side through the second opening 1131 to achieve bottom light emission display on the substrate 111 side. The orthogonal projection of the reflective part 122 on the substrate 111 is located within the orthogonal projection of the second opening 1131 on the substrate 111, and the center of the second opening 1131 coincides with the center of the reflective part 122. This allows the light reflected by the reflective part 122 to converge and be emitted through the second opening 1131, so that a second pixel is formed on the second side of the display panel 1 opposite to the second opening 1131, thereby achieving a better display effect.

[0061] As a result of the setting of the second opening 1131, there is no driving circuit blocking the bottom light emission at the second opening 1131. At the same time, the light that is incident on the second opening 1131 either comes out of the second opening 1131 to form the bottom light emission, or is incident on the second reflective layer 14 and continues to be reflected, thus forming the second pixel at the second opening 1131.

[0062] In one feasible implementation, such as Figure 4 As shown, in the cross-section of the second opening 1131 along the thickness direction of the display panel 1, the edge formed by the sidewall of the second opening 1131 is straight, and the angle between the sidewall of the second opening 1131 and the plane perpendicular to the thickness direction of the display panel 1 is α, where 25°≤α≤75°.

[0063] In the above embodiment, the cross-section of the second opening 1131 along the thickness direction of the display panel 1 is trapezoidal, and the larger end of the cross-section along the thickness direction perpendicular to the display panel 1 is close to the light-emitting unit 121, while the smaller end is far away from the light-emitting unit 121. This allows the second reflective layer 14 located on the sidewall of the first opening 132 to receive light reflected by the first reflective layer 13, and also increases the area of ​​the second reflective layer 14, thereby increasing its receiving area of ​​light reflected by the first reflective layer 13.

[0064] The angle formed by the sidewall of the second opening 1131 and the first insulating layer 113 towards the side away from the second opening 1131 is denoted as α. α can be 25°, 26°, 27.5°, 30°, 46°, 53°, 61°, 70°, 75°, etc., and this application does not impose any particular limitation.

[0065] In one feasible implementation, such as Figure 5 As shown, in the cross-section of the second opening 1131 along the thickness direction of the display panel 1, the edge formed by the sidewall of the second opening 1131 is arc-shaped, and the arc protrudes to the side away from the second opening 1131.

[0066] In the above embodiment, the sidewall of the second opening 1131 protrudes to the side away from the second opening 1131, so that the second reflective layer 14 on the side surface of the sidewall facing the second opening 1131 has the same structure, that is, the side surface of the second reflective layer 14 facing the second opening 1131 protrudes to the side away from the second opening 1131, so that the second reflective layer 14 can be used to gather the light reflected by the first reflective layer 13 to further improve the reflection effect.

[0067] In one feasible implementation, the second reflective layer 14 covers the sidewall of the second opening 1131, thereby increasing the area of ​​the second reflective layer 14 to enhance the light reflection effect of the second reflective layer 14 and thus improve the display effect on the substrate 111 side of the display panel 1.

[0068] In the above embodiment, in order to ensure that the second reflective layer 14 can completely cover the sidewall of the second opening 1131, the area of ​​the second reflective layer 14 can be made larger than the area of ​​the sidewall of the second opening 1131 during the formation of the second reflective layer 14. Specifically, the size of the second reflective layer 14 can be increased by a first preset distance along the edge direction of the sidewall toward the inside of the second opening 1131 in the cross section of the second opening 1131 perpendicular to the thickness direction of the display panel 1. The first preset distance is greater than 1 micrometer, thereby ensuring that the second reflective layer 14 completely covers the sidewall of the second opening 1131 within the process error range.

[0069] In one feasible implementation, such as Figure 6 As shown, the light-emitting unit 121 includes a first electrode 1211, a light-emitting layer 1212, and a second electrode 1213 stacked on the reflective portion 122 along the direction away from the substrate 11. The driving device layer 112 includes a thin-film transistor. The first electrode 1211 is electrically connected to the second reflective layer 14, and the second reflective layer 14 is electrically connected to the thin-film transistor.

[0070] In the above embodiments, the reflective portion 122 is made of a reflective material, and the first electrode 1211 can be made of a metallic material or a non-metallic conductive material. When a metallic material is used, at least one of silver (Ag), molybdenum (Mo), titanium (Ti), and aluminum (Al) can be used; when a non-metallic conductive material is used, indium tin oxide can be used. In this case, the first electrode 1211 can be connected to the second reflective layer 14, and the second reflective layer 14 can be electrically connected to the drain of the thin-film transistor, thereby achieving electrical connection between the thin-film transistor and the first electrode 1211, and controlling the operating state of the light-emitting unit 121 through the thin-film transistor. Alternatively, the first electrode 1211 can also be directly electrically connected to the drain of the thin-film transistor; this application does not impose any particular limitation.

[0071] In one feasible implementation, such as Figure 7 As shown, the light-emitting unit 121 includes a light-emitting layer 1212 and a second electrode 1213 stacked on the reflective portion 122 along the direction away from the substrate 11. The material of the reflective portion 122 is metal. The driving device layer 112 includes a thin film transistor. The reflective portion 122 is electrically connected to the second reflective layer 14, and the second reflective layer 14 is electrically connected to the thin film transistor.

[0072] In the above embodiment, the reflective portion 122 is made of a conductive material with reflective properties. The reflective portion 122 is reused as the first electrode 1211 of the light-emitting unit 121. The reflective portion 122 can be made of a metal material, specifically at least one of silver (Ag), molybdenum (Mo), titanium (Ti), and aluminum (Al). In this case, the reflective portion 122 can be connected to the second reflective layer 14, and the second reflective layer 14 can be electrically connected to the drain of the thin-film transistor, thereby realizing the electrical connection between the thin-film transistor and the reflective portion 122 (light-emitting unit 121), and controlling the operating state of the light-emitting unit 121 through the thin-film transistor. Alternatively, the reflective portion 122 can also be directly electrically connected to the drain of the thin-film transistor; this application does not impose any particular limitation.

[0073] In the above embodiments, the first electrode 1211 can be an anode and the second electrode 1213 can be a cathode. The light-emitting layer 1212 includes a first carrier layer, a light-emitting material layer and a second carrier layer stacked along the direction away from the substrate 11. The first carrier layer may include at least one of a hole injection layer, a hole transport layer and an electron blocking layer, and the second carrier layer may include at least one of an electron injection layer, an electron transport layer and a hole blocking layer.

[0074] like Figure 7 As shown, the light-emitting device layer 12 also includes a pixel definition layer 115 located on the side of the first electrode 1211 facing away from the substrate 111. The pixel definition layer 115 includes a plurality of pixel openings for exposing the first electrode 1211.

[0075] In one feasible implementation, such as Figure 7 As shown, the display panel 1 also includes an encapsulation layer 15, which is located between the light-emitting device layer 12 and the first reflective layer 13. The encapsulation layer 15 may include an inorganic layer 151 and an organic layer 152, with the organic layer 152 located on the side of the inorganic layer 151 facing away from the light-emitting device layer 12.

[0076] In the above embodiment, the encapsulation layer 15 is located on the side of the light-emitting device layer 12 away from the substrate 11 and is in direct contact with the light-emitting device layer 12. It can effectively isolate the light-emitting device layer 12 from water and oxygen, thereby improving the display quality of the light-emitting unit 121. The first reflective layer 13 is disposed on the side of the encapsulation layer 15 away from the light-emitting device layer 12. Since the encapsulation layer 15 has a certain thickness, a certain distance can be maintained between the first reflective layer 13 and the light-emitting unit 121, allowing the first reflective layer 13 to better receive the light emitted by the light-emitting unit 121.

[0077] Specifically, the encapsulation layer 15 may include an inorganic layer, an organic layer, and an inorganic layer stacked along the direction away from the substrate 11. The organic layer has a better effect in isolating water and oxygen, and the inorganic layer has better flatness. The use of stacked organic and inorganic layers can further improve the encapsulation effect of the encapsulation layer 15 on the light-emitting device layer 12.

[0078] In one feasible implementation, such as Figure 8 As shown, the display panel 1 also includes a spacer layer 16, which is located on the side of the first reflective layer 13 facing the substrate 11. Specifically, the spacer layer 16 may be located on the side surface of the encapsulation layer 15 facing away from the substrate 11.

[0079] The spacer layer 16 includes a spacer structure 161 disposed opposite to the light-emitting unit 121. The spacer structure 161 includes a third opening 1611 that coincides with the center of the first opening 132 and a reflective structure 1612 surrounding the third opening 1611. In a cross-section perpendicular to its own circumferential direction, the edge of the reflective structure 1612 away from the substrate 11 is arc-shaped, and the arc protrudes towards the side away from the substrate 11. As a result, the first reflective layer 13 located on the surface of the reflective structure 1612 facing away from the substrate 111 has the same shape as the reflective structure 1612, that is, the surface of the first reflective layer 13 facing the substrate 11 protrudes towards the side away from the substrate 11. As a result, the side of the first reflective layer 13 facing the substrate 11 forms a reflective cavity, and the light emitted by the light-emitting unit 121 onto the first reflective layer 13 can be converged by the first reflective layer 13 and reflected to the second reflective layer 14, improving light utilization and thus improving the display effect on the substrate 111 side.

[0080] Or, such as Figure 9As shown, in another feasible embodiment, the cross-sectional shape of the reflective structure 1612 along its own circumferential direction is trapezoidal, with both base angles of the trapezoid being acute angles. This results in the first reflective layer 13 located on the surface of the reflective structure 1612 facing away from the substrate 11 having the same shape as the reflective structure 1612. Specifically, the surface of the first reflective layer 13 facing the substrate 11 has a first plane parallel to the substrate 11 and a first inclined plane and a second inclined plane located on either side of the first plane. The angle between the first inclined plane and the plane containing the surface of the substrate 11 facing the light-emitting unit 121, with the angle towards the second inclined plane being acute, and the angle between the second inclined plane and the plane containing the surface of the substrate 11 facing the light-emitting unit 121, with the angle towards the first inclined plane being acute. This allows the first reflective layer 13 to form a reflective cavity on the side facing the substrate 111. Light emitted from the light-emitting unit 121 onto the first reflective layer 13 can be converged by the first reflective layer 13 and reflected to the second reflective layer 14, improving light utilization and thus enhancing the display effect on the substrate 111 side.

[0081] In one feasible implementation, the first reflective layer 13 may be made of at least one of silver (Ag), molybdenum (Mo), titanium (Ti), aluminum (Al), and magnesium (Mg).

[0082] In one feasible implementation, such as Figure 8 and Figure 9 As shown, the display panel 1 also includes a light filter layer 17, which includes a first light filter layer 171 and / or a second light filter layer 172. The first light filter layer 171 is located on the side of the first reflective layer 13 facing away from the substrate 11, and includes a first light filter portion 1711 disposed opposite to the first opening 132. The orthographic projection of the first light filter portion 1711 on the substrate 11 covers the orthographic projection of the opening on the substrate 11. Since the first opening 132 is disposed opposite to and corresponds one-to-one with the light-emitting unit 121, the light-emitting unit 121 is disposed opposite to and corresponds one-to-one with the first light filter portion 1711, and each pair of corresponding first light filter portions 1711 and light-emitting unit 121 has the same color.

[0083] When the spacer layer 16 includes a spacer structure 161 disposed opposite to the light-emitting unit 121, the orthogonal projection of the first filter layer 171 on the substrate 111 covers the orthogonal projection of the spacer structure 161 on the substrate 111. This achieves a better light filtering effect and further ensures the purity of the light emitted from the display panel 1 and the black level when the screen is off.

[0084] like Figure 10As shown, the second filter layer 172 is located on the side of the first insulating layer 113 facing the substrate 11. The second filter layer 172 includes a second filter portion 1721 disposed opposite to the second opening 1131. The orthographic projection of the second filter portion 1721 on the substrate 11 covers the orthographic projection of the second opening 1131 on the substrate 11. In each pair of oppositely disposed and corresponding second filter portions 1721 and second openings 1131, the color of the reflected light received by the second opening 1131 is the same as the color of the second filter portion 1721.

[0085] Specifically, the second filter layer 172 may be located between the first insulating layer 113 and the driving device layer 112, or inside the driving device layer 112, or between the driving device layer 112 and the substrate 111. When the substrate 111 is a rigid substrate 111, the second filter layer 172 may also be located on the side of the substrate 111 away from the driving device layer 112. This application does not make any special limitation on the specific location of the second filter layer 172.

[0086] By setting the filter layer 17, the color of the light emitted by the light-emitting unit 121 is made purer, and at the same time, it prevents the ambient light from entering the display panel 1 and being reflected by the internal structure when the screen is off, thus preventing the blackness of the display panel 1 from being insufficient when the screen is off.

[0087] In one feasible implementation, such as Figure 10 As shown, the display panel 1 also includes a black matrix layer 18, which is located on the side of the filter layer 17 facing away from the substrate 111. The black matrix layer 18 can be made of a dark-colored photosensitive resin material. The black matrix layer 18 includes openings for exposing each light-emitting unit 121, and the orthographic projections of the openings and the first opening 132 on the substrate 111 coincide. The black matrix is ​​used to prevent cross-lighting between adjacent light-emitting units 121, thereby further improving the display effect of the display panel 1.

[0088] This application also provides a display device 2, such as... Figure 11 As shown, it includes any of the display panels 1 provided in the above embodiments of this application.

[0089] This display device 2 can be applied to the field of automotive displays. It extends the screen space, providing a better user experience. Furthermore, the increased aperture ratio of the display device 2 results in better display effects, a more detailed picture, and a thinner profile, leading to a superior user experience.

[0090] The embodiments described above are not exhaustive and do not limit the invention to specific examples. 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: A substrate includes a first insulating layer, the first insulating layer including a plurality of second openings, a second reflective layer formed on the sidewall of the second opening, the second reflective layer covering the entire sidewall of the second opening; A light-emitting device layer is formed on one side of the substrate and includes a plurality of light-emitting units, wherein the light-emitting units have light-emitting sides and backlight sides disposed opposite to each other; A first reflective layer is formed on the side of the light-emitting device layer away from the substrate, including a body portion and a plurality of first openings. The first openings expose a portion of the light-emitting unit. The body portion is used to reflect a portion of the light emitted from the light-emitting side to the backlight side to form a double-sided display. The second reflective layer is used to reflect a portion of the light reflected by the main body back to the backlight side.

2. The display panel according to claim 1, characterized in that, The substrate further includes a substrate, a driving device layer, and a second insulating layer, wherein the second insulating layer is located on the side of the first insulating layer opposite to the substrate.

3. The display panel according to claim 1, characterized in that, The aperture of the second opening gradually increases from the end closer to the substrate to the end farther away from the substrate; The light-emitting device layer includes a reflective portion, and some of the light emitted from the light-emitting side is reflected sequentially by the first reflective layer, the second reflective layer and the reflective portion and then emitted away from the light-emitting side.

4. The display panel according to claim 3, characterized in that, The orthographic projection of the reflective portion on the substrate is located within the orthographic projection of the second opening on the substrate, and the second opening coincides with the center of the reflective portion.

5. The display panel according to claim 3, characterized in that, In a cross-section along the thickness direction of the display panel, the edge formed by the sidewall of the second opening is straight, and the angle between the sidewall of the second opening and the plane perpendicular to the thickness direction of the display panel is α, where 25°≤α≤75°; or, In the cross-section of the second opening along the thickness direction of the display panel, the edge formed by the sidewall of the second opening is arc-shaped, and the arc protrudes to the side away from the second opening.

6. The display panel according to any one of claims 1-5, characterized in that, The display panel further includes a spacer layer located on the side of the first reflective layer facing the substrate; The spacer layer includes a spacer structure disposed opposite to the light-emitting unit, the spacer structure including a third opening disposed opposite to the first opening, and a reflective structure surrounding the third opening; In a cross-section perpendicular to its own circumferential direction, the edge of the reflective structure away from the substrate is arc-shaped, and the arc protrudes towards the side away from the substrate. Alternatively, the cross-sectional shape of the reflective structure along its own circumferential direction is trapezoidal, and both base angles of the trapezoid are acute angles.

7. The display panel according to claim 1, characterized in that, It also includes a filter layer, which includes a first filter layer and / or a second filter layer. The first filter layer is located on the side of the first reflective layer away from the substrate, and the first filter layer includes a first filter portion disposed opposite to the first opening. The second filter layer is located on the side of the first insulating layer facing the substrate, and the second filter layer includes a second filter portion disposed opposite to the second opening.

8. The display panel according to claim 2, characterized in that, The light-emitting unit includes a first electrode, a light-emitting layer, and a second electrode stacked on the reflective portion along a direction away from the substrate. The driving device layer includes a thin-film transistor. The first electrode is electrically connected to the second reflective layer, and the second reflective layer is electrically connected to the thin-film transistor.

9. The display panel according to claim 2, characterized in that, The light-emitting unit includes a light-emitting layer and a second electrode stacked on the reflective portion along a direction away from the substrate. The reflective portion is made of metal. The driving device layer includes a thin-film transistor. The reflective portion is electrically connected to the second reflective layer, and the second reflective layer is electrically connected to the thin-film transistor.

10. The display panel according to claim 2, characterized in that, The driving device layer includes driving devices and traces. The driving devices are connected to the traces. The driving devices include thin-film transistors and capacitors. The area of ​​the traces opposite to the second opening is made of a transparent material, or the traces are arranged around the second opening.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-10.

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