Display panel, manufacturing method thereof and spliced screen

Abstract

The application provides a display panel, a manufacturing method thereof and a spliced screen. The display panel is used to form the spliced screen and comprises light emitting units arranged in a display area on a substrate. The display area comprises a splicing area and a non-splicing area. The splicing area is arc-shaped and is bent from a position adjacent to the non-splicing area to a direction away from a light emitting surface of the display panel. The light emitting units comprise first light emitting units located in the splicing area and second light emitting units located in the non-splicing area. The directions of light beams emitted by the first light emitting units and the second light emitting units are both perpendicular to the light emitting surface. When the display panel is used to form the spliced screen, the light beams emitted by the light emitting units at the splicing area are also light beams perpendicular to the light emitting surface. The problem of a dark area or a black border caused by brightness attenuation at the splicing area can be avoided, and the display effect of the spliced screen can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel, its manufacturing method, and a splicing screen. Background Technology

[0002] With the development of display technology, the demand for large-size displays is increasing. To save costs, at least two display panels are usually spliced ​​together to form a large-size display, which is called a splicing screen.

[0003] However, spliced ​​screens often suffer from poor display quality due to large gaps between the display panels. Related technologies typically employ bending the display area of ​​the panels and then splicing these bent areas together to reduce the gaps, but the display quality still needs further improvement. Summary of the Invention

[0004] This application provides a display panel, its manufacturing method, and a video wall. The various aspects involved in the embodiments of this application are described below.

[0005] In a first aspect, a display panel is provided for forming a video wall. The display panel includes: a substrate having a display area, the display area including a video wall area and a non-video wall area, the video wall area being an arc-shaped area bent from the connection with the non-video wall area toward a direction away from the light-emitting surface of the display panel; and light-emitting units disposed in the display area. The light-emitting units include a first light-emitting unit located in the video wall area and a second light-emitting unit located in the non-video wall area, wherein the direction of the light beam emitted by the first light-emitting unit and the direction of the light beam emitted by the second light-emitting unit are both perpendicular to the light-emitting surface.

[0006] In one possible implementation, the light-emitting unit includes an anode, and a protrusion is provided on the side of the anode of the first light-emitting unit opposite to the light-emitting surface, the protrusion supporting the anode of the first light-emitting unit.

[0007] In one possible implementation, the splicing area includes a first splicing area close to the non-splicing area and a second splicing area far from the non-splicing area. The protrusion includes a first protrusion and a second protrusion. The first protrusion is located on the side of the anode of the first light-emitting unit in the first splicing area that is away from the light-emitting surface, and the second protrusion is located on the side of the anode of the first light-emitting unit in the second splicing area that is away from the light-emitting surface. The support height of the first protrusion is lower than the support height of the second protrusion.

[0008] In one possible implementation, the arcuate radius ranges from 90° to 180°.

[0009] In one possible implementation, the protrusion includes a first sidewall close to the light-emitting surface and a second sidewall away from the light-emitting surface, the first sidewall being parallel to the light-emitting surface and the second sidewall being fitted to the splicing area.

[0010] In one possible implementation, the protrusion is integrally formed with the substrate.

[0011] In one possible implementation, the display panel includes a non-display area connected to the splicing area, the non-display area being located away from the light-emitting surface by the curvature of the splicing area.

[0012] In a second aspect, a video wall is provided, including a cover plate and at least two display panels as described in the first aspect.

[0013] Thirdly, a method for manufacturing a display panel is provided, the display panel being used to form a splicing screen, the method comprising: manufacturing a substrate having a display area, the display area including a splicing area and a non-splicing area; manufacturing light-emitting units within the display area; bending the splicing area from its connection with the non-splicing area toward a direction away from the light-emitting surface of the display panel, making the splicing area arc-shaped; wherein the light-emitting unit includes a first light-emitting unit located in the splicing area and a second light-emitting unit located in the non-splicing area, the direction of the light beam emitted by the first light-emitting unit and the direction of the light beam emitted by the second light-emitting unit are both perpendicular to the light-emitting surface.

[0014] In one possible implementation, the light-emitting unit includes an anode, and fabricating the light-emitting unit within the display area includes: fabricating a protrusion in the splicing area; fabricating the anode of the first light-emitting unit on the protrusion and fabricating the anode of the second light-emitting unit in the non-splicing area.

[0015] The display panel for forming a video wall according to embodiments of this application includes a first light-emitting unit located in the splicing area and a second light-emitting unit located in the non-splicing area. The direction of the light beam emitted by the first light-emitting unit and the direction of the light beam emitted by the second light-emitting unit are both perpendicular to the substrate. When using this display panel to form a video wall, since the light beam emitted by the light-emitting unit at the splicing point is also perpendicular to the substrate, the problem of darker areas or black borders caused by brightness attenuation at the splicing point can be avoided, effectively improving the display effect of the video wall. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a video wall provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the structure of a display panel used to form a splicing screen, provided in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the structure of the splicing screen provided in an embodiment of this application.

[0019] Figure 4 for Figure 2 A schematic diagram of the display panel in its unbent state.

[0020] Figure 5 for Figure 2 A schematic diagram of the splicing area of ​​the display panel.

[0021] Figure 6 This is a schematic diagram of the structure of a display panel for forming a video wall, provided as another embodiment of this application.

[0022] Figure 7 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application. Detailed Implementation

[0023] To facilitate understanding of this application, it will be described in more detail below based on exemplary embodiments and in conjunction with the accompanying drawings. The same or similar reference numerals are used in the drawings to denote the same or similar modules. It should be understood that the drawings are merely illustrative, and the scope of protection of this application is not limited thereto.

[0024] With the rapid development of display technology, the demand for larger screens is growing, with broad application prospects in fields such as command and control centers, commercial centers, high-end conferences, private cinemas, and dispatch centers. However, large-size displays require relatively higher investment and are more difficult to manufacture, making it challenging to guarantee a high yield rate.

[0025] Video wall technology thus emerged, referring to the technique of joining at least two display panels together to create a large display screen. However, because each display panel forming a video wall includes non-display areas, a significant gap exists at the joint when multiple display panels are joined. This gap results in a fragmented display on the video wall, leading to poor display quality.

[0026] To reduce the aforementioned seams, one possible approach is to set a splicing area within the display area of ​​each display panel that makes up the video wall. For example, this could involve bending the display areas and then splicing the bent display areas together. For instance, as shown... Figure 1As shown, the video wall 1 includes two display panels 10 spliced ​​together and a cover plate 30 above the two display panels 10. Each display panel 10 may include a display area (AA) 110 and a non-display area 120 that at least partially surrounds the display area 110. A light-emitting unit 11 is disposed within the display area 110 for displaying information. The display area 110 includes a splicing area 111 and a non-splicing area 112.

[0027] like Figure 1 As shown, since the splicing area 111 is curved, the light beam emitted by the light-emitting unit 11 within the splicing area 111 is a large-angle light beam with an angle to the positively emitted light beam. A positively emitted light beam can be understood as a beam whose direction is perpendicular to the light-emitting surface of the cover plate 30 or the display panel. A large-angle light beam can be understood as a beam whose direction is different from the positively emitted light beam. For example... Figure 1 As shown, the non-splicing area 112 is a planar area that fits against the cover plate 30. Therefore, the light beam emitted by the light-emitting unit 11 in the non-splicing area 112 is a positive emission light beam.

[0028] A wide-angle light beam will cause the light beam emitted by the light-emitting unit 11 to be lost or overlapped when it reaches the cover plate 30 or the light-emitting surface of the display panel. As a result, the brightness of the splicing area 111 of the display panel will be reduced, resulting in a darker area or a black border at the splicing point of the splicing screen.

[0029] In view of this, this application proposes a display panel for forming a splicing screen. When using this display panel to form a splicing screen, since the light beam emitted by the light-emitting unit at the splicing point is a positive emission beam, that is, the direction of the light beam emitted by the light-emitting unit at the splicing point is perpendicular to the light-emitting surface, the problem of darker areas or black borders caused by brightness attenuation at the splicing point can be avoided, thereby effectively improving the display effect of the splicing screen.

[0030] The following is combined Figures 2-4 The display panel 20 in the embodiments of this application will be described in detail. It should be understood that the display panel 20 in the embodiments of this application is a flexible display panel, for example, the display panel 20 can be an OLED display panel.

[0031] See Figure 2 The display panel 20 has a display area 210 and at least a portion of a non-display area 220 surrounding the display area 210.

[0032] like Figure 2As shown, the display area 210 includes a splicing area 211 and a non-splicing area 212. The splicing area 211 is used for external splicing and is located at the edge of the display area 210. The splicing area 211 bends from its adjacency with the non-splicing area 212 toward the direction away from the light-emitting surface of the display panel 10; therefore, the splicing area 211 has a curved shape (or arc shape).

[0033] The non-joined area 212 is planar in shape. Additionally, as... Figure 3 As shown, the non-slicing area 212 is used to abut the cover plate 30 of the splicing screen 2 it forms. Optionally, the splicing area 211 can be connected to (or adjacent to) the non-display area 220. The non-display area 220 can be moved away from the light-emitting surface of the display panel 20 by the curvature of the splicing area 211. The light-emitting surface of the display panel can be understood as the side of the display panel that displays the pattern, or the surface that the user can view; therefore, the light-emitting surface can also be called the display surface. In some embodiments, the light-emitting surface can be the outer surface of a transparent cover plate. The transparent cover plate can be, for example, a glass cover plate.

[0034] This application embodiment does not specifically limit the curvature of the splicing area 211, as long as the splicing area 211 can ensure that there is no non-display area at the splicing point of the formed splicing screen 2.

[0035] As one implementation, the arc shape formed by the splicing area 211 has an arc range of 90°-180°; in other words, the arc shape formed by the splicing area 211 occupies 1 / 4-1 / 2 of the entire cylindrical arc surface. Preferably, as shown... Figure 2 As shown, the arc of the splicing area 211 is 90°, meaning the arc of the splicing area 211 occupies 1 / 4 of the entire cylindrical arc surface. This ensures that the display area formed by the splicing area 211 can be effectively used for display. In other embodiments, such as... Figure 6 As shown, when the arc shape formed by the splicing area 211 has a curvature range of 180°...

[0036] When the splicing area 211 is in use, both ends can be connected to the non-sponge area 212, which serves as the display area 210, allowing the display panel 20 to display on both sides. When using... Figure 6 When the display panels in the video are spliced ​​together, the resulting video wall can be displayed on both sides.

[0037] See also Figure 2 The display panel 20 may include a substrate 21 and a light-emitting unit 22.

[0038] The substrate 21 is used to support the light-emitting unit 22. The substrate 21 has the aforementioned display area 210 and non-display area 220. The display area 210 also has the aforementioned splicing area 211 and non-splicing area 212. This application embodiment does not specifically limit the substrate 21. For example, the substrate 21 may be a part of the light-emitting unit 22, such as an organic thin film included within the light-emitting unit 22. Alternatively, the substrate 21 may also be a flexible substrate or a substrate substrate.

[0039] Light-emitting units 22 are disposed in the display area 210 of the substrate 21, and the light-emitting units 22 are formed as pixels on the display panel 20. There can be multiple light-emitting units 22, which can be arranged in an array on the substrate 21 along the horizontal and vertical directions. Each pixel can further include multiple sub-pixels, such as red sub-pixels, green sub-pixels, and / or blue sub-pixels.

[0040] The light-emitting unit 22 includes a first light-emitting unit 221 located in the splicing area 211 and a second light-emitting unit 222 located in the non-splicing area 212. The direction of the light beam emitted by the first light-emitting unit 221 is the same as the direction of the light beam emitted by the second light-emitting unit 222, and both the direction of the light beam emitted by the first light-emitting unit 221 and the direction of the light beam emitted by the second light-emitting unit 222 are perpendicular to the light-emitting surface. In other words, both the light beam emitted by the first light-emitting unit 221 and the light beam emitted by the second light-emitting unit 222 are positively emitted light beams.

[0041] The light-emitting unit 22 can be an OLED device. The light-emitting unit 22 includes an anode 223, a cathode, and a light-emitting layer sandwiched between the anode 223 and the cathode. The anode 223 can be a transparent anode, for example, it can be formed of a transparent conductive material, such as indium tin oxide (ITO) or indium zinc oxide (IZO). The cathode can be a reflective cathode, which can be formed of a metallic material, such as magnesium, aluminum, lithium, silver, or an alloy metal. The light-emitting layer can include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer.

[0042] In this embodiment, the surface of the anode 223 near the light-emitting surface can be the emitting surface of the light-emitting unit 22 that can emit a light beam. That is, the area and direction of the light beam emitted by the light-emitting unit 22 are determined by the surface of the anode 223 near the light-emitting surface.

[0043] To ensure that the light beam emitted by the first light-emitting unit is a positively emitted beam, one implementation method is as follows: Figure 2 and Figure 3As shown, a protrusion 224 can be provided on the side of the anode 2231 of the first light-emitting unit 221 that is away from the light-emitting surface. The protrusion 224 is used to support the anode 2231 of the first light-emitting unit 221, so that the anode 2231 of the first light-emitting unit 221 on the arc-shaped splicing area 211 is planar, and the surface (or upper surface) of the anode 2231 of the planar first light-emitting unit 221 near the light-emitting surface is parallel to the light-emitting surface.

[0044] In this embodiment, the shape of the protrusion 224 is not specifically limited, as long as the protrusion 224 can support the anode 2231 of the first light-emitting unit 221 so that the direction of the light beam emitted from the anode 2231 is perpendicular to the light-emitting surface.

[0045] As one implementation method, such as Figures 2-5 As shown, the protrusion 224 may include a first sidewall 225 near the light-emitting surface and a second sidewall 226 away from the light-emitting surface. The first sidewall 225 is parallel to the light-emitting surface, and the second sidewall 226 is fitted to the arc-shaped splicing area described above. In some embodiments, the second sidewall 226 is an inclined surface with an angle relative to the light-emitting surface. As one implementation, the protrusion 224 may be triangular, trapezoidal, or irregular in shape.

[0046] As an example, combined Figures 2-5 As shown, the cross-section of the protrusion 224 can be triangular. The first sidewall 225 of the triangle is used to support the anode 2231 of the first light-emitting unit 221. By providing the protrusion 224 on the side of the first light-emitting unit 221 away from the light-emitting surface, the protrusion 224 can support the anode 2231 of the first light-emitting unit 221 to be flat after bending in the splicing area 211 of the display area 210. Therefore, as Figure 2 As shown, the direction of the light beam emitted by the first light-emitting unit 221 can be the same as the direction of the light beam emitted by the second light-emitting unit 222 corresponding to the non-sponge area 212 in the display area 210, and both are perpendicular to the light-emitting surface, thereby avoiding the problem of dark areas or black borders and effectively improving the display effect of the splicing screen formed by the display panel.

[0047] It should be understood that, such as Figure 4 As shown, before the splicing area 211 of the display panel 20 is formed into a curved shape, the splicing area 211 can be in a planar state. That is, when the splicing area 211 is not bent, the splicing area 211 can form the same plane with the non-splicing area 212, and this plane is a horizontal plane. Only after the splicing area 211 is bent can it be formed into the curved shape shown. Figure 2 The splicing area 211 shown is curved. Before the splicing area 211 is bent, as... Figure 4As shown, the support height of the protrusion 224 on the anode 2231 of the first light-emitting unit 221 makes the anode 2231 of the first light-emitting unit 221 be inclined, and the anode 2231 of the first light-emitting unit 221 is higher than the anode 2232 of the second light-emitting unit 222, while the anode 2232 of the second light-emitting unit 222 is planar. Specifically, the lowest point of the side of the anode 2231 of the first light-emitting unit 221 away from the light-emitting surface is flush with the anode 2232 of the second light-emitting unit 222, and the highest point of the anode 2231 of the first light-emitting unit 221 is higher than the anode 2232 of the second light-emitting unit 222.

[0048] As mentioned above, there can be multiple first light-emitting units 221, which can be evenly distributed in the splicing area 211 in both row and column directions. However, since the splicing area 211 is arc-shaped, without the protrusion 224, the first light-emitting units 221 on the arc-shaped splicing area 211 have different extension directions in the row direction.

[0049] Specifically, such as Figure 5 As shown, the splicing area 211 may include a first splicing area 2111 near the non-splicing area 212 and a second splicing area 2112 away from the non-splicing area 212. The first splicing area 2111 and the second splicing area 2112 have the same arc length; however, the inclination of the arc length corresponding to the second splicing area 2112 is greater than that corresponding to the arc length of the first splicing area 2111. Therefore, the anode 2231 of the first light-emitting unit 221 on the second splicing area 2112 requires a higher support height than the anode 2231 of the first light-emitting unit 221 on the first splicing area 2111 in order to emit a beam of light perpendicular to the light-emitting surface.

[0050] To address the above situation, in order to ensure that the light beam emitted by the first light-emitting unit 221 in the splicing area 211 remains perpendicular to the light-emitting surface after the splicing area 211 is bent, as follows: Figure 5 As shown, the protrusion 224 may include a first protrusion 2241 and a second protrusion 2242. The first protrusion 2241 is located on the side of the anode 2231 of the first light-emitting unit 221 located in the first splicing area 2111 that is away from the light-emitting surface. The second protrusion 2242 is located on the side of the anode 2231 of the first light-emitting unit 221 located in the second splicing area 2112 that is away from the light-emitting surface. The support height h1 of the first protrusion 2241 on the anode 2231 of the first light-emitting unit 221 is lower than the support height h2 of the second protrusion 2242 on the anode 2231 of the first light-emitting unit 221.

[0051] This application embodiment does not specifically limit the division method of the sub-segmentation areas (the aforementioned first splicing area 2111 and second splicing area 2112) in the splicing area 211. As one implementation method, such as... Figure 5 As shown, the splicing area 211 is an arc surface with radius R. After dividing the bending radius R of the splicing area 211 into n equal parts in the horizontal direction, x1, x2...xn can be obtained in the horizontal direction. The arc areas corresponding to x1, x2...xn are n sub-sponging areas, where each sub-sponging area can be one or more pixel pitches. These n sub-sponging areas include the first splicing area 2111, the second splicing area 2112...the nth splicing area 2112n. Correspondingly, the above-mentioned protrusion 224 can also include n, namely the first protrusion 2241, the second protrusion 2242...the nth protrusion 224n. The support heights of the first protrusion 2241, the second protrusion 2242...the nth protrusion 224n are h1, h2...hn, respectively, where h1, h2...hn increase sequentially.

[0052] This application does not specifically limit the structure of the protrusion 224 in the embodiments. As one implementation, the protrusion 224 can be an independent organic structure. As another implementation, such as... Figure 2 As shown, the protrusion 224 can be a patterned film layer integrally formed on the substrate 21. For example, the substrate 21 is an organic thin film within the light-emitting unit 22, and the protrusion 224 is integrally formed with the organic thin film to create a patterned organic thin film.

[0053] In this embodiment, the driving method of the light-emitting unit 22 can be active driving or passive driving. When the light-emitting unit 22 is actively driven, a pixel driving circuit electrically connected to the light-emitting unit 221 is also provided on the substrate 21. The pixel driving circuit may include a thin film transistor (TFT), which provides driving for the light-emitting unit 22. The thin film transistor may include a source (S), a drain (D), a gate (G), and an active layer (ACT). The thin film transistor may be electrically connected to the control components of the display panel 20 (e.g., the control components may be an integrated circuit, a flip-chip film, and / or a flexible circuit board) to drive the light-emitting unit 22 in the display area for display.

[0054] In some embodiments, an encapsulation cover may also be provided on the light-emitting unit 22. The encapsulation cover is used to encapsulate the light-emitting unit 22, and the encapsulation cover may have a single layer or multiple layers to prevent external moisture or oxygen from penetrating into the light-emitting unit. In some embodiments, the encapsulation cover 102 may also planarize the upper surface of the light-emitting unit.

[0055] like Figure 3As shown, this application embodiment also provides a video wall 2. The video wall 2 includes a cover plate 30 and at least two of the aforementioned display panels 20. It should be understood that this application embodiment does not specifically limit the number of display panels 20 included in the video wall 2. For example, Figure 3 Only two display panels 20 are shown in the image.

[0056] The cover plate 30 can be made of a light-transmitting material, such as glass or PI. The cover plate 30 serves two purposes: protecting the display panel 20 and also providing a touch area to receive touch operations from the user on the display panel 20. It should be noted that the surface 301 on the cover plate 30 used for displaying and receiving user touch operations is the display surface described above.

[0057] The splicing area 211 of this video wall is entirely a display area, so the seams are virtually non-existent during display, enabling seamless splicing. Furthermore, because the light beam emitted from the splicing area of ​​the display panel forming the video wall is perpendicular to the light-emitting surface, the problems of dark areas and black borders at the splicing points are avoided, effectively improving the display effect of the video wall.

[0058] The splicing screen in this application embodiment can be any large-size display product or component with display function, such as a liquid crystal panel, an OLED panel, a mobile internet device (MID), a television, a monitor, or a digital photo frame.

[0059] The above combination Figures 1-6 The device embodiments of this application are described in detail below. Figure 7 The present application describes in detail the method embodiments. It should be understood that the description of the method embodiments corresponds to the description of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding apparatus embodiments.

[0060] Figure 7 This is a schematic flowchart illustrating the manufacturing method of the display panel 20 in this embodiment. The display panel 20 is used to form a video wall.

[0061] See Figure 7 In step S710: a substrate is fabricated, the substrate having a display area, the display area including a splicing area and a non-splicing area.

[0062] In step S720: a light-emitting unit is fabricated within the display area.

[0063] In step S730: the splicing area is bent from the location adjacent to the non-sponge area toward the light-emitting surface of the display panel, so that the splicing area becomes an arc shape.

[0064] The light-emitting unit includes a first light-emitting unit located in the splicing area and a second light-emitting unit located in the non-splicing area. The direction of the light beam emitted by the first light-emitting unit and the direction of the light beam emitted by the second light-emitting unit are both perpendicular to the light-emitting surface.

[0065] Optionally, step S720 may specifically include: creating a protrusion in the splicing area, and creating the anode of the first light-emitting unit on the protrusion and the anode of the second light-emitting unit in the non-splicing area. Wherein, when the splicing area is arc-shaped, the protrusion supports the anode of the first light-emitting unit, making the anode within the first light-emitting unit planar.

[0066] It should be noted that, in the embodiments of this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, 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 other identical elements in the process, method, article, or apparatus that includes said element.

[0067] 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.

[0068] It should be understood that the term "and / or" used in the embodiments of this application is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. In addition, the character " / " in the embodiments of this application generally indicates that the preceding and following associated objects have an "or" relationship.

[0069] In the embodiments of this application, the term "electrical connection" can refer to a direct electrical connection between two components, or it can refer to an electrical connection between two components via one or more other components.

[0070] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display panel, said display panel being used to form a video wall, characterized in that, The display panel includes: The substrate has a display area, which includes a splicing area and a non-splicing area. The splicing area is an arc-shaped surface that bends from the location adjacent to the non-splicing area toward the light-emitting surface of the display panel. A light-emitting unit is disposed in the display area; The light-emitting unit includes a first light-emitting unit located in the splicing area and a second light-emitting unit located in the non-splicing area. The direction of the light beam emitted by the first light-emitting unit and the direction of the light beam emitted by the second light-emitting unit are both perpendicular to the light-emitting surface. The light-emitting unit includes an anode, and a protrusion is provided on the side of the anode of the first light-emitting unit that is away from the light-emitting surface, and the protrusion supports the anode of the first light-emitting unit; The splicing area includes a first splicing area close to the non-splicing area and a second splicing area far from the non-splicing area. The protrusion includes a first protrusion and a second protrusion. The first protrusion is located on the side of the anode of the first light-emitting unit in the first splicing area that is away from the light-emitting surface. The second protrusion is located on the side of the anode of the first light-emitting unit in the second splicing area that is away from the light-emitting surface. The support height of the first protrusion is lower than the support height of the second protrusion.

2. The display panel according to claim 1, characterized in that, The first splicing area and the second splicing area have the same arc length, but the inclination of the arc length corresponding to the second splicing area is greater than that of the arc length corresponding to the first splicing area.

3. The display panel according to claim 1, characterized in that, The arc of the curved surface ranges from 90° to 180°.

4. The display panel according to claim 1, characterized in that, The protrusion includes a first sidewall close to the light-emitting surface and a second sidewall away from the light-emitting surface. The first sidewall is parallel to the light-emitting surface, and the second sidewall is attached to the splicing area.

5. The display panel according to claim 1, characterized in that, The protrusion is integrally formed with the substrate.

6. The display panel according to claim 1, characterized in that, The display panel includes: The non-display area is connected to the splicing area, and the non-display area is away from the light-emitting surface by the curvature of the splicing area.

7. A video wall, characterized in that, include: Cover plate; At least two display panels as described in any one of claims 1-6.

8. A method for manufacturing a display panel, characterized in that, The display panel is used to form a video wall, and the method includes: A substrate is fabricated, the substrate having a display area, the display area including a splicing area and a non-splicing area; A light-emitting unit is fabricated within the display area; The splicing area is bent from the location adjacent to the non-sponge area in a direction away from the light-emitting surface of the display panel, so that the splicing area becomes an arc shape; The light-emitting unit includes an anode, and includes a first light-emitting unit located in the splicing area and a second light-emitting unit located in the non-splicing area. The direction of the light beam emitted by the first light-emitting unit and the direction of the light beam emitted by the second light-emitting unit are both perpendicular to the light-emitting surface. The fabrication of the light-emitting unit in the display area includes: Protrusions are created in the splicing area; The anode of the first light-emitting unit is formed on the protrusion, and the anode of the second light-emitting unit is formed in the non-joining area; The splicing area includes a first splicing area close to the non-splicing area and a second splicing area far from the non-splicing area. The protrusion includes a first protrusion and a second protrusion. The first protrusion is located on the side of the anode of the first light-emitting unit in the first splicing area that is away from the light-emitting surface. The second protrusion is located on the side of the anode of the first light-emitting unit in the second splicing area that is away from the light-emitting surface. The support height of the first protrusion on the anode of the first light-emitting unit is lower than the support height of the second protrusion on the anode of the first light-emitting unit.

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