CN116778816B - Display panel, manufacturing method thereof and spliced screen - Google Patents

Abstract

The application provides a display panel, a manufacturing method thereof and a spliced screen. The display panel is used for forming a spliced screen and comprises a light-emitting unit arranged in a display area on a substrate, the display area comprises a spliced area and a non-spliced area, the spliced area is in a cambered surface shape bent from the adjacent position of the non-spliced area to the direction away from the light-emitting surface of the display panel, the light-emitting unit comprises a first light-emitting unit positioned in the spliced area and a second light-emitting unit positioned in the non-spliced area, and the direction of a light beam emitted by the first light-emitting unit and the direction of a light beam emitted by the second light-emitting unit are both perpendicular to the direction of the light-emitting surface. When the display panel is used for forming the spliced screen, the light beams emitted by the light emitting units at the spliced position are light beams perpendicular to the direction of the light emitting surface, so that the problem of darker areas or similar black edges caused by brightness attenuation at the spliced position can be avoided, and the display effect of the spliced screen can be effectively improved.

Description

Display panel, manufacturing method thereof and spliced screen

Technical Field

The application relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a spliced screen.

Background

With the development of display technology, there is an increasing demand for large-sized display screens. To save costs, at least two display panels may be commonly used to splice to form a large-sized display screen, which is then referred to as a tiled screen.

However, the spliced screen formed by splicing may have poor display effect due to a large splice gap between display panels. The related art generally adopts a method of bending a display area of a display panel and splicing the bent display area to reduce a splice gap of a spliced screen, and a display effect thereof needs to be further improved.

Disclosure of Invention

The application provides a display panel, a manufacturing method thereof and a spliced screen. Various aspects of embodiments of the application are described below.

The display panel comprises a substrate, a light emitting unit and a second light emitting unit, wherein the substrate is provided with a display area, the display area comprises a spliced area and a non-spliced area, the spliced area is in a cambered surface shape bent from a position connected with the non-spliced area to a direction away from a light emitting surface of the display panel, the light emitting unit is arranged in the display area, the light emitting unit comprises a first light emitting unit and a second light emitting unit, the first light emitting unit is positioned in the spliced area, the second light emitting unit is positioned in the non-spliced area, and the direction of a light beam emitted by the first light emitting unit and the direction of a light beam emitted by the second light emitting unit are perpendicular to the light emitting surface.

In one possible implementation, the light emitting unit includes an anode, and a protrusion is disposed on a side of the anode of the first light emitting unit facing away from the light emitting surface, and the protrusion supports the anode of the first light emitting unit.

In one possible implementation manner, the splicing region includes a first splicing region close to the non-splicing region and a second splicing region far away from the non-splicing region, the protrusions include a first protrusion and a second protrusion, the first protrusion is located on a side, facing away from the light emitting surface, of an anode of the first light emitting unit in the first splicing region, the second protrusion is located on a side, facing away from the light emitting surface, of an anode of the first light emitting unit in the second splicing region, and a support height of the first protrusion is lower than a support height of the second protrusion.

In one possible implementation, the arc-like curvature is in the range of 90 ° -180 °.

In one possible implementation manner, the protrusion includes a first side wall close to the light emitting surface and a second side wall away from the light emitting surface, where the first side wall is parallel to the light emitting surface, and the second side wall is attached to the splicing region.

In one possible implementation, the protrusions are integrally provided with the substrate.

In one possible implementation, the display panel includes a non-display region connected to the splicing region, and the non-display region is far from the light emitting surface by the bending radian of the splicing region

In a second aspect, there is provided a tiled screen comprising a cover plate and at least two display panels as described in the first aspect.

The manufacturing method of the display panel comprises the steps of manufacturing a substrate, manufacturing a light emitting unit in the display area, bending the spliced area from a position connected with the non-spliced area to a direction away from a light emitting surface of the display panel to enable the spliced area to be in a cambered surface shape, wherein the light emitting unit comprises a first light emitting unit located in the spliced area and a second light emitting unit located in the non-spliced area, and the direction of a light beam emitted by the first light emitting unit and the direction of a light beam emitted by the second light emitting unit are perpendicular to the light emitting surface.

In one possible implementation, the light emitting unit includes an anode, and fabricating the light emitting unit within the display region includes fabricating a bump in the stitching region, fabricating the anode of the first light emitting unit on the bump, and fabricating the anode of the second light emitting unit in the non-stitching region.

The light-emitting unit of the display panel for forming the spliced screen comprises a first light-emitting unit positioned in a spliced area and a second light-emitting unit positioned in a non-spliced area, wherein the direction of a light beam emitted by the first light-emitting unit and the direction of a light beam emitted by the second light-emitting unit are perpendicular to the direction of a substrate. When the display panel is used for forming the spliced screen, the light beams emitted by the light-emitting units at the spliced position are perpendicular to the substrate, so that the problem of darker areas or similar black edges caused by brightness attenuation at the spliced position can be avoided, and the display effect of the spliced screen can be effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a spliced screen according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a display panel for forming a tiled screen according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a spliced screen according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of the display panel in fig. 2 in an unbent state.

Fig. 5 is a schematic structural diagram of a splicing region of the display panel in fig. 2.

Fig. 6 is a schematic structural diagram of a display panel for forming a tiled screen according to another embodiment of the present application.

Fig. 7 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the application.

Detailed Description

In order to facilitate an understanding of the application, the application is described in more detail below on the basis of exemplary embodiments in connection with the accompanying drawings. The same or similar reference numbers are used in the drawings to refer to the same or similar modules. It is to be understood that the drawings are merely illustrative and that the scope of the application is not limited thereto.

With the rapid development of display technology, the viewing of larger-sized screens is becoming more popular, and the method has wide application prospects in the large-sized display fields such as command monitoring centers, business centers, high-end conferences, private cinema, scheduling centers and the like. However, the large-sized display screen requires relatively higher cost, and has large processing difficulty, so that the qualification rate of the large-sized display screen is difficult to ensure.

A split screen technology has thus developed, which refers to the splicing together of at least two display panels into a large display screen. However, since a single display panel forming a tiled screen includes a non-display area, there may be a large tile gap at the tile when a plurality of display panels are tiled. The display on the spliced screen is provided with a split feeling due to the spliced gap, and the display effect is poor.

In order to reduce the above-mentioned splice gap, one possible implementation is to provide a splice area within the display area of each display panel that makes up the spliced screen. For example, the display area may be folded and the folded display area may be spliced. Illustratively, as shown in fig. 1, the tiled screen 1 includes two display panels 10 tiled together and a cover plate 30 over the two display panels 10, the display panels 10 may include a display area (ACTIVE AREA, AA) 110 and a non-display area 120 at least partially surrounding the display area 110. Wherein, the display area 110 is provided with a light emitting unit 11 for displaying the display area 110. The display area 110 includes a stitching area 111 and a non-stitching area 112.

As shown in fig. 1, since the splice region 111 is arc-shaped, the light beam emitted from the light emitting unit 11 within the splice region 111 is large-angle light having an angle with the light beam being emitted. The positive emission light beam may be understood as a light beam whose direction is perpendicular to the light exit surface of the cover plate 30 or the display panel. Large angle light can be understood as a light beam having a direction different from the direction of the light beam being emitted. As shown in fig. 1, the non-spliced region 112 is a planar region attached to the cover plate 30, so that the light beam emitted by the light emitting unit 11 in the non-spliced region 112 is a positive emission light beam.

The light beam emitted by the light emitting unit 11 may have a loss or overlap when reaching the light emitting surface of the cover plate 30 or the display panel, and thus the brightness of the spliced region 111 of the display panel may be attenuated, so that a darker region or a black-edge-like problem may occur at the spliced position of the spliced screen.

In view of the above, an embodiment of the present application provides a display panel for forming a tiled screen, when the display panel is used to form a tiled screen, since a light beam emitted by a light emitting unit at a tiled location is a positive emission light beam, that is, a direction of the light beam emitted by the light emitting unit at the tiled location is a direction perpendicular to a light emitting surface, a darker area or a black-edge-like problem caused by brightness attenuation at the tiled location can be avoided, thereby effectively improving a display effect of the tiled screen.

The display panel 20 according to the embodiment of the present application will be described in detail with reference to fig. 2 to 4. It should be understood that the display panel 20 in the embodiment of the present application is a flexible display panel, for example, the display panel 20 may be an OLED display panel.

Referring to fig. 2, the display panel 20 has a display area 210 and a non-display area 220 at least partially surrounding the display area 210.

As shown in fig. 2, the display area 210 includes a stitching area 211 and a non-stitching area 212. The splicing area 211 is used for splicing outwards, and the splicing area 211 is positioned at the edge of the display area 210. The spliced region 211 is bent from a position adjacent to the non-spliced region 212 in a direction away from the light-emitting surface of the display panel 10, and thus the spliced region 211 has a curved shape (or arc shape).

The non-spliced region 212 has a planar shape, and, as shown in fig. 3, the non-spliced region 212 is used to attach to the cover plate 30 of the spliced screen 2 formed therefrom. Alternatively, the stitching region 211 may be contiguous (or adjacent) to the non-display region 220. The non-display area 220 can be far away from the light emitting surface of the display panel 20 through the curved arc of the splicing area 211. The light-emitting surface of the display panel may be understood as a surface on which a pattern is displayed on the display panel or a surface that a user can view, and thus, the light-emitting surface may also be referred to as a display surface. In some embodiments, the light exit surface may be an outer surface of the transparent cover plate. The transparent cover plate may be, for example, a glass cover plate.

The embodiment of the application does not specifically limit the bending radian of the splicing area 211, as long as the splicing area 211 can enable the spliced position of the formed spliced screen 2 to have no non-display area.

As one implementation, the arc of the arc formed by the splicing region 211 ranges from 90 ° to 180 °, in other words, the arc formed by the splicing region 211 is an arc having a ratio of 1/4 to 1/2 of the entire cylindrical arc. Preferably, as shown in fig. 2, the arc range of the arc surface shape formed by the splicing area 211 is 90 °, that is, the arc surface shape formed by the splicing area 211 occupies 1/4 of the arc surface shape of the whole cylindrical arc surface, so that the display area formed as the splicing area 211 can be effectively used for displaying. In other embodiments, as shown in FIG. 6, the arcuate extent of the formation of the splice region 211 is 180 degrees

In this case, both ends of the stitching region 211 may be connected to the non-stitching region 212 as the display region 210, and the display panel 20 may perform double-sided display. When the display panel of fig. 6 is used for splicing, the spliced screen formed can be displayed on both sides.

With continued reference to fig. 2, the display panel 20 may include a substrate 21 and a light emitting unit 22.

The substrate 21 is used for carrying the light emitting unit 22. The substrate 21 has the display region 210 and the non-display region 220. The display area 210 also has the above-described spliced area 211 and non-spliced area 212. The substrate 21 is not particularly limited in the embodiment of the present application, and for example, the substrate 21 may be a part of the light emitting unit 22, and for example, the substrate 21 may be an organic thin film included in the light emitting unit 22. Or the substrate 21 may also be a flexible substrate or a substrate.

The light emitting unit 22 is disposed in the display region 210 of the substrate 21, and the light emitting unit 22 is formed as a pixel on the display panel 20. The number of the light emitting units 22 may be plural, and the plurality of light emitting units 22 may be arranged in an array form on the substrate 21 along the horizontal direction and the vertical direction. Each pixel may further include a plurality of sub-pixels, such as a red sub-pixel, a green sub-pixel, and/or a blue sub-pixel.

The light emitting units 22 include a first light emitting unit 221 located at the stitching region 211 and a second light emitting unit 222 located at the non-stitching region 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 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 both perpendicular to the light emitting surface, in other words, the light beam emitted by the first light emitting unit 221 and the light beam emitted by the second light emitting unit 222 are both positive emission light beams.

The light emitting unit 22 may be an OLED device. The light emitting unit 22 includes an anode 223, a cathode, and a light emitting layer interposed between the anode 223 and the cathode. The anode 223 may be a transparent anode, for example, it may be formed of a transparent conductive material, which may be, for example, indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). The cathode may be a reflective cathode, which may be formed of a metallic material, for example, magnesium, aluminum, lithium, silver, or an alloy metal, or the like. The light emitting layer may include a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer.

In the embodiment of the present application, the surface of the anode 223 near the light emitting surface may be the light emitting surface where the light emitting unit 22 can emit the light beam. That is, the area and direction of the light beam emitted from the light emitting unit 22 are determined by the surface of the anode 223 close to the light emitting surface.

In order to make the direction of the light beam emitted by the first light emitting unit positive, as an implementation, as shown in fig. 2 and 3, a protrusion 224 may be provided at a side of the anode 2231 of the first light emitting unit 221 facing away from the light emitting surface. The protrusion 224 is used for supporting 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 region 211 is planar, and a surface (or called an upper surface) of the anode 2231 of the planar first light emitting unit 221, which is close to the light emitting surface, is parallel to the light emitting surface.

The shape of the protrusion 224 is not particularly limited in the embodiment of the present application, as long as the protrusion 224 can support the anode 2231 of the first light emitting unit 221 such that the direction of the light beam emitted from the anode 2231 is a direction perpendicular to the light emitting surface.

As an implementation manner, as shown in fig. 2-5, the protrusion 224 may include a first sidewall 225 close to the light-emitting surface and a second sidewall 226 away from the light-emitting surface, where the first sidewall 225 is parallel to the light-emitting surface, and the second sidewall 226 is attached to the cambered splicing region. In some embodiments, the second sidewall 226 is an inclined surface having an inclined angle with respect to the light-emitting surface. As one implementation, the protrusions 224 may be triangular, trapezoidal, or irregularly shaped.

As one example, as shown in connection with fig. 2-5, the cross-section of the protrusion 224 may be triangular. The triangular first sidewall 225 serves to support the anode 2231 of the first light emitting unit 221. By arranging 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 planar after the splicing area 211 of the display area 210 is bent, so, as shown in fig. 2, 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-splicing area 212 in the display area 210 and is perpendicular to the direction of the light emitting surface, thereby avoiding the problem of dark area or black edge and effectively improving the display effect of the spliced screen formed by the display panel.

It should be understood that, as shown in fig. 4, before the splicing region 211 of the display panel 20 is formed in the arc shape, the splicing region 211 may be in a planar state. I.e., the splice region 211 is not bent, the splice region 211 may form the same plane as the non-splice region 212, which is a horizontal plane. The splicing region 211 may be formed into a splicing region 211 having a cambered surface shape as shown in fig. 2 after being bent. Before the splicing region 211 is not folded, as shown in fig. 4, the supporting height of the anode 2231 of the first light emitting unit 221 by the protrusion 224 is such that the anode 2231 of the first light emitting unit 221 is inclined, the anode 2231 of the first light emitting unit 221 is higher than the anode 2232 of the second light emitting unit 222, and the anode 2232 of the second light emitting unit 222 is planar. Specifically, the lowest point of the anode 2231 of the first light emitting unit 221 on the side facing 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.

As described above, the number of the first light emitting units 221 may be plural, and the plural first light emitting units may be uniformly distributed in the splice region 211 in the row direction and the column direction. However, since the stitching region 211 is arc-shaped, if there is no protrusion 224, the first light emitting units 221 on the arc-shaped stitching region 211 have different extension directions in the row direction.

Specifically, as shown in fig. 5, the splicing region 211 can include a first splicing region 2111 adjacent to the non-splicing region 212 and a second splicing region 2112 remote from the non-splicing region 212. Wherein the arc corresponding to the first and second stitching regions 2111, 2112 is the same, but the arc length corresponding to the second stitching region 2112 is more sloped than the arc length corresponding to the first stitching region 2111. In view of this, the anode 2231 of the first light emitting unit 221 on the second splicing region 2112 requires a higher supporting height than the anode 2231 of the first light emitting unit 221 on the first splicing region 2111 to achieve emission of the light beam in the direction perpendicular to the light emitting surface.

For the above-mentioned case, in order to ensure that the light beam emitted by the first light emitting unit 221 of the splicing region 211 after the splicing region 211 is bent is still a light beam perpendicular to the light emitting surface, as shown in fig. 5, the protrusion 224 may include a first protrusion 2241 and a second protrusion 2242, where the first protrusion 2241 is located on a side of the anode 2231 of the first light emitting unit 221 located in the first splicing region 2111 facing away from the light emitting surface, and the second protrusion 2242 is located on a side of the anode 2231 of the first light emitting unit 221 located in the second splicing region 2112 facing away from the light emitting surface. Wherein, the supporting height h1 of the first protrusion 2241 to the anode 2231 of the first light emitting unit 221 is lower than the supporting height h2 of the second protrusion 2242 to the anode 2231 of the first light emitting unit 221.

The division manner of the sub-splicing regions (the first splicing region 2111 and the second splicing region 2112) in the splicing region 211 in the embodiment of the present application is not particularly limited. As an implementation manner, as shown in fig. 5, the splicing region 211 is an arc surface with a radius R, and after n equal parts of average division is performed on the bending radius R of the splicing region 211 in the horizontal direction, x1 and x2. The arc regions corresponding to x1, x 2..xn respectively are n sub-stitching regions, wherein each sub-stitching region may be one or more pixels pitch. The n sub-splice regions include a first splice region 2111, a second splice region 2112. In response, the protrusions 224 may include n protrusions 224n, i.e., first protrusions 2241 and second protrusions 2242. The first and second protrusions 2241 and 2242 have support heights h1 and h2., hn, respectively, and h1 and h2., hn, respectively, become larger in order.

The structure of the projection 224 is not particularly limited in the embodiment of the present application. As one implementation, the protrusions 224 may be separate organic structures. As another implementation, as shown in fig. 2, the protrusions 224 may be patterned film layers integrally provided with the substrate 21. For example, the substrate 21 is an organic film within the light emitting unit 22, and the protrusions 224 are integrally provided with the organic film to form a patterned organic film.

In the embodiment of the present application, the driving manner of the light emitting unit 22 may 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 further provided on the substrate 21. The pixel driving circuit may include a thin film transistor (Thin Film Transistor, TFT) that provides driving for the light emitting unit 22. The thin film transistor may include a source electrode S, a drain electrode D, a gate electrode G, and an active layer ACT. The thin film transistor may be electrically connected with a control component (e.g., the control component may be an integrated circuit, a flip chip film, and/or a flexible circuit board) of the display panel 20 to drive the light emitting unit 22 in the display area to display.

In some embodiments, a package cover may also be provided on the light emitting unit 22. The encapsulation cover for encapsulating the light emitting unit 22 may have a single layer or multiple layers, preventing external moisture or oxygen from penetrating into the light emitting unit. In some embodiments, the package cover 102 may also planarize an upper surface of the light emitting unit.

As shown in fig. 3, the embodiment of the present application further provides a spliced screen 2. The tiled screen 2 includes a cover plate 30 and at least two of any of the display panels 20 described above. It should be understood that the number of display panels 20 included in the spliced screen 2 is not particularly limited in the embodiment of the present application. Illustratively, only two display panels 20 are shown in fig. 3.

The cover plate 30 may be made of a light-transmitting material, for example, glass or PI. The cover plate 30 may serve to protect the display panel 20, and a touch area may be formed on the cover plate 30 to receive a touch operation of a user on the display panel 20. It should be noted that, the surface 301 of the cover 30 for displaying and receiving the touch operation of the user is the display surface described above.

The splicing area 211 of the spliced screen is completely a display area, so that when the spliced screen is displayed, the splice joint is almost absent, and seamless splicing can be realized. In addition, the light beams emitted by the splicing area of the display panel forming the spliced screen are light beams perpendicular to the light emitting surface, so that the problems of dark areas and black edges at the splicing position of the spliced screen are avoided, and the display effect of the spliced screen is effectively improved.

The spliced screen in the embodiment of the application can be any large-size display product or component with a display function, such as a liquid crystal panel, an OLED panel, mobile internet equipment (MID), a television, a display, a digital photo frame and the like.

An embodiment of the device of the present application is described in detail above in connection with fig. 1-6. An embodiment of the method of the present application is described in detail below in conjunction with fig. 7. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding device embodiments.

Fig. 7 is a flowchart illustrating a method for manufacturing the display panel 20 according to an embodiment of the application. The display panel 20 is used to form a tiled screen.

Referring to fig. 7, in step S710, a substrate having a display area thereon, the display area including a stitching area and a non-stitching area, is fabricated.

In step S720, a light emitting unit is fabricated in the display area.

In step S730, the spliced region is bent from a position adjacent to the non-spliced region in a direction away from the light-emitting surface of the display panel, so that the spliced region is in a cambered surface shape.

The light-emitting units comprise a first light-emitting unit located in the splicing area and a second light-emitting unit located in the non-splicing area, and 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 perpendicular to the light-emitting surface.

Alternatively, step S720 may specifically include fabricating a bump in the stitching region and fabricating an anode of the first light emitting unit on the bump and fabricating an anode of the second light emitting unit in the non-stitching region. When the splicing area is in a cambered surface shape, the protrusions support the anode of the first light-emitting unit so that the anode in the first light-emitting unit is in a plane shape.

It should be noted that in the embodiments of the present application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

It should be understood that the term "and/or" used in the embodiments of the present application is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B, and may indicate that a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" in the embodiment of the present application generally indicates that the front and rear association objects are in an or relationship.

In embodiments of the present application, the term "electrically connected" may refer to two components being directly electrically connected, or may refer to two components being electrically connected via one or more other components.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1.A display panel for forming a tiled screen, the display panel comprising:

The display device comprises a substrate, a display panel and a display module, wherein the substrate is provided with a display area, the display area comprises a splicing area and a non-splicing area, and the splicing area is in a cambered surface shape bent from a position adjacent to the non-splicing area to a direction away from a light-emitting surface of the display panel;

a light emitting unit disposed in the display area;

The light emitting units comprise a first light emitting unit located in the splicing area and a second light emitting unit located in the non-splicing area, and 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 perpendicular to the light emitting surface;

The light-emitting unit comprises an anode, a protrusion is arranged on one side, away from the light-emitting surface, of the anode of the first light-emitting unit, and the protrusion supports the anode of the first light-emitting unit;

the splicing area comprises a first splicing area close to the non-splicing area and a second splicing area far away from the non-splicing area, the protrusions comprise a first protrusion and a second protrusion, the first protrusion is located on one side, deviating from the light emitting surface, of the anode of the first light emitting unit in the first splicing area, the second protrusion is located on one side, deviating from the light emitting surface, of the anode of the first light emitting unit in the second splicing area, and the supporting height of the first protrusion is lower than that of the second protrusion.

2. The display panel of claim 1, wherein the first and second stitching regions have the same arc, and wherein the second stitching region has an arc length that has a greater slope than the first stitching region.

3. The display panel of claim 1, wherein the arc has an arc in the range of 90 ° -180 °.

4. The display panel of claim 1, wherein the protrusion comprises a first sidewall adjacent to the light exit surface and a second sidewall facing away from the light exit surface, the first sidewall being parallel to the light exit surface, the second sidewall being in contact with the stitching region.

5. The display panel of claim 1, wherein the protrusions are integrally provided with the substrate.

6. The display panel of claim 1, wherein the display panel comprises:

the non-display area is connected with the splicing area, and the non-display area is far away from the light emitting surface through the bending radian of the splicing area.

7. A tiled screen, comprising:

A cover plate;

at least two display panels according to any one of claims 1-6.

8. A method for manufacturing a display panel, wherein the display panel is used for forming a spliced screen, the method comprising:

manufacturing a substrate, wherein a display area is arranged on the substrate, and the display area comprises a splicing area and a non-splicing area;

Manufacturing a light-emitting unit in the display area;

Bending the splicing region from a position adjacent to the non-splicing region to a direction away from the light-emitting surface of the display panel, so that the splicing region is in a cambered surface shape;

The light emitting unit comprises an anode, the light emitting unit comprises a first light emitting unit positioned in the splicing area and a second light emitting unit positioned 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 perpendicular to the direction of the light emitting surface, and the manufacturing of the light emitting unit in the display area comprises the following steps:

manufacturing a bulge in the splicing area;

Manufacturing an anode of the first light emitting unit on the protrusion and manufacturing an anode of the second light emitting unit in the non-spliced region;

The splicing area comprises a first splicing area close to the non-splicing area and a second splicing area far away from the non-splicing area, the protrusions comprise a first protrusion and a second protrusion, the first protrusion is located on one side, deviating from the light emitting surface, of the anode of the first light emitting unit in the first splicing area, the second protrusion is located on one side, deviating from the light emitting surface, of the anode of the first light emitting unit in the second splicing area, and the supporting height of the anode of the first light emitting unit by the first protrusion is lower than that of the anode of the first light emitting unit by the second protrusion.