Display panel, spliced display screen and electronic equipment

Abstract

The invention provides a display panel, a spliced display screen and electronic equipment, the display panel comprises a driving backboard, the driving backboard comprises a first surface, a second surface and a side surface, the first surface and the second surface are oppositely arranged in the thickness direction of the driving backboard, and the side surface is arranged on the first surface; the side surface is positioned between the first surface and the second surface; and the splicing protection layer covers at least part of the side surfaces and comprises at least one groove and / or bulge extending along the direction parallel to the first surface. According to the display panel, the splicing protection layer with the grooves or the protrusions is arranged on the side face of the display panel, the buffering effect is achieved when the display panels are spliced, the grooves and the protrusions of the splicing protection layer are mutually embedded, and light leakage of splicing seams between the display panels can be reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a spliced ​​display screen and an electronic device. Background Art

[0002] With the development of display device manufacturing technology, mini LED and micro-LED are widely used due to their superior brightness, resolution, contrast, energy consumption, service life, response speed and thermal stability. However, due to the limitation of mass transfer process, Mini LED or Micro-LED display panels cannot be made into a larger integral screen, so it is necessary to splice multiple smaller display panels into a larger screen. However, during the splicing process, collision or friction may occur between adjacent display panels, resulting in damage to the screen and affecting the product yield. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the object of the present application is to provide a display panel, the display panel comprising:

[0004] A driving back plate, the driving back plate comprising a first surface, a second surface and a side surface, the first surface and the second surface are arranged opposite to each other in a thickness direction of the driving back plate, and the side surface is located between the first surface and the second surface;

[0005] The splicing protection layer covering at least a portion of the side surface includes at least one groove and / or protrusion extending in a direction parallel to the first surface.

[0006] In a possible implementation, the splicing protection layer includes a plurality of grooves and protrusions arranged along a thickness direction of the driving back plate.

[0007] In a possible implementation manner, in the thickness direction of the driving back plate, the width of the protrusion is smaller than the width of the groove.

[0008] In a possible implementation, the splicing protection layer includes a plurality of rows of protrusions extending in a direction parallel to the first surface, and the groove is formed between two adjacent rows of protrusions;

[0009] Preferably, each row of protrusions comprises at least one disconnected notch, and the disconnected notches of two adjacent rows of protrusions are staggered in their orthographic projections on the plane where the first surface is located.

[0010] In a possible implementation, the material of the splicing protection layer includes elastic material;

[0011] Preferably, the color of the splicing protection layer includes black;

[0012] Preferably, the material of the splicing protection layer includes hydrogel.

[0013] In a possible implementation manner, the first surface and the second surface are polygonal in shape, the driving backplane includes a plurality of side surfaces, and the splicing protection layer covers at least a portion of each of the side surfaces.

[0014] In a possible implementation, the driving backplane includes a side wiring structure extending from the first surface through the side surface to the second surface; the splicing protection layer covers at least a portion of the side wiring structure located on the side surface;

[0015] Preferably, the side wiring structure includes a conductive wiring extending from the first surface through the side surface to the second surface and at least a portion of a packaging layer covering the conductive wiring.

[0016] Another object of the present application is to provide a spliced ​​display screen, which includes a supporting structure and at least two display panels provided in the present application arranged on the supporting structure; the splicing protective layers of adjacent display panels are arranged relatively to each other, and the grooves and the protruding structures on the splicing protective layers of adjacent display panels are embedded with each other.

[0017] In a possible implementation manner, in the two splicing protection layers that are embedded with each other, in the thickness direction of the display panel, the width of the groove is greater than the width of the protrusion.

[0018] Another object of the present application is to provide an electronic device, which includes the spliced ​​display screen provided in the present application.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] The present application provides a display panel, a spliced ​​display screen and an electronic device. A splicing protective layer with grooves or protrusions is arranged on the side of the display panel to play a buffering role when the display panels are spliced. The grooves and protrusions of the splicing protective layers of two adjacent display panels can be interlocked, which can reduce light leakage in the splicing seams between the display panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 One of the schematic diagrams of a display panel provided in an embodiment of the present application;

[0023] Figure 2 A second schematic diagram of a display panel provided in an embodiment of the present application;

[0024] Figure 3 One of the structural schematic diagrams of the splicing protection layer provided in the embodiment of the present application;

[0025] Figure 4 One of the schematic diagrams of the splicing protective layer provided in the embodiment of the present application;

[0026] Figure 5 The second schematic diagram of the coordination of the splicing protective layer provided in the embodiment of the present application;

[0027] Figure 6 The second structural schematic diagram of the splicing protection layer provided in the embodiment of the present application;

[0028] Figure 7 A third schematic diagram of a display panel provided in an embodiment of the present application;

[0029] Figure 8 The third schematic diagram of the coordination of the splicing protective layer provided in the embodiment of the present application.

[0030] Icon: 100-driving backplane; 101-first surface; 102-second surface; 103-side; 400-splicing protection layer; 410-protrusion; 420-groove; 200-side wiring structure; 210-conductive wiring; 220-packaging layer; D1-first direction; D2-second direction; D3-third direction. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, different features in the embodiments of the present application may be combined with each other.

[0036] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 This embodiment provides a display panel, which includes a driving backplane 100 and a splicing protection layer 400 .

[0037] The driving back plate 100 includes a first surface 101 , a second surface 102 and a side surface 103 . The first surface 101 and the second surface 102 are arranged opposite to each other in the thickness direction of the driving back plate 100 , and the side surface 103 is located between the first surface 101 and the second surface 102 .

[0038] For example, in a possible implementation, the first surface 101 and the second surface 102 may both be rectangular, and the first surface 101 and the second surface 102 are parallel to Figure 1 The first direction D1 and the second direction D2 are perpendicular to each other. The thickness direction of the driving backplane 100 is Figure 1 The third direction D3 is shown, and the third direction D3 is perpendicular to both the first direction D1 and the second direction D2. The side surface 103 extends from the edge of the first surface 101 to the edge of the second surface 102 along the third direction D3.

[0039] In this embodiment, the driving backplane 100 may include a thin film transistor (TFT) driving backplane 100, and the driving backplane 100 may include a plurality of driving units distributed in an array, and the driving units are used to drive the light-emitting device to emit light.

[0040] Preferably, in this embodiment, the display panel may further include at least one light emitting device disposed on one side of the driving backplane 100, and the light emitting device is electrically connected to the driving unit via a bonding electrode or pad on the driving backplane 100. For example, at least one of the light emitting devices may be placed or temporarily attached to one side of the driving backplane 100 by mass transfer, and then bonded to the driving backplane by pressure bonding to achieve electrical connection.

[0041] The splicing protection layer 400 covers at least part of the side surface 103 of the driving backplane 100, wherein the side surface 103 may be a side that needs to be spliced ​​and contacted with other display panels. The splicing protection layer 400 plays a role in buffering bumps or collisions during the splicing process of the display panels.

[0042] Please refer to Figure 3 The splicing protection layer 400 includes at least one groove 420 and / or protrusion 410 extending in a direction parallel to the first surface 101. That is, the groove 420 and / or the protrusion 410 form a strip structure, and the extension direction of the strip structure is parallel to the first surface 101.

[0043] For example, please refer again to Figure 2 If the splicing protection layer 400 covers the side surface 103 of the driving backplane 100 facing the second direction D2, the groove 420 and / or the protrusion 410 on the splicing protection layer 400 may extend along the first direction D1.

[0044] For another example, in other implementations not shown in this embodiment, if the splicing protection layer 400 covers the side 103 of the driving backplane 100 facing the first direction D1, the groove 420 and / or protrusion 410 on the splicing protection layer 400 may extend along the second direction D2.

[0045] In a possible implementation, the splicing protection layer 400 may have both the protrusions 410 and the grooves 420 , wherein one groove 420 may be formed between two adjacent protrusions 410 , or one protrusion 410 may be formed between two adjacent grooves 420 .

[0046] Based on the above design, please refer to Figure 4When the two display panels provided in this embodiment are spliced, the splicing protective layers 400 of the two display panels can be arranged relative to each other. The splicing protective layers 400 of the two display panels both have grooves 420 and / or protrusions 410, and the grooves 420 and the protrusions 410 on the two splicing protective layers 400 are interlocked with each other to form an interlaced structure. In this way, on the one hand, the splicing protective layer 400 can play a role in buffering bumps or collisions of the display panels during the splicing process; on the other hand, the splicing protective layer 400 can block the light in the third direction D3 from passing through the splicing seam between the two adjacent display panels, thereby blocking and reducing light leakage from the splicing seam between the display panels, and the interlaced structure formed by the two splicing protective layers 400 can also improve the splicing stability of the two adjacent display panels to a certain extent, and improve the splicing quality.

[0047] In a possible implementation, the splicing protection layer 400 includes a plurality of grooves 420 and protrusions 410 arranged along the thickness direction of the driving back plate 100 .

[0048] For example, please refer again to Figure 1 The splicing protection layer 400 includes three or more protrusions 410 and / or grooves 420. The protrusions 410 and the grooves 420 extend in a direction parallel to the first surface 101 and / or the second surface 102, and the plurality of grooves 420 and the protrusions 410 are arranged along the third direction D3.

[0049] In a possible implementation, in the thickness direction of the driving back plate 100, the width of the protrusion 410 is smaller than the width of the groove 420. For example, please refer to Figure 3 In the third direction D3, the width H1 of the protrusion 410 is smaller than the width H2 of the groove 420.

[0050] Based on the above design, please refer to Figure 4 In this embodiment, when two display panels are spliced, the protrusions 410 on the splicing protective layers 400 of the two adjacent display panels are staggered in the third direction D3, and the grooves 420 are staggered in the third direction D3. The protrusion 410 of one splicing protective layer 400 is embedded in the groove 420 of another splicing protective layer 400. Please refer to Figure 5For each display panel, the width of the protrusion 410 in the third direction D3 is smaller than the width of the groove 420 in the third direction D3. After the protrusion 410 is embedded in the groove 420, there is a certain gap between the protrusions 410 of the two splicing protection layers 400 in the third direction D3. In this way, when the splicing protection layer 400 is deformed due to temperature changes, the protrusion 410 can provide a certain deformation buffer space to prevent the splicing protection layers 400 from being squeezed against each other and causing excessive overall deformation.

[0051] In one possible implementation, see Figure 6 The splicing protection layer 400 includes a plurality of rows of protrusions 410 extending in a direction parallel to the first surface 101, and a groove 420 is formed between two adjacent rows of protrusions 410. Each row of protrusions 410 includes at least one disconnected notch (such as Figure 6 As shown by the dotted circle in the middle, the orthographic projections of the disconnected notches of the protrusions 410 in two adjacent rows on the plane where the first surface 101 is located are staggered.

[0052] For example, in Figure 1 In the technical scheme shown, in the splicing protection layer 400 covering the side surface 103 of the display panel facing the second direction D2, multiple rows of protrusions 410 extend along the first direction D1. Each row of protrusions 410 includes one or more disconnection notches. In this way, when the protrusions 410 are deformed in the first direction D1 due to temperature changes, the disconnection notches can provide a certain deformation buffer space.

[0053] The gaps of the protrusions 410 in two adjacent rows are staggered in the third direction D3, so that light can be prevented from passing through adjacent gaps in the third direction D3, thereby reducing light leakage at the joints between the display panels.

[0054] In a possible implementation, the material of the splicing protection layer 400 includes an elastic material, so that the buffering protection effect of the splicing protection layer 400 can be improved.

[0055] Optionally, the color of the splicing protection layer 400 includes black. In this way, the reflection of the splicing protection layer 400 can be reduced, and the visual effect of the display panels after splicing can be guaranteed.

[0056] Optionally, the material of the splicing protection layer 400 includes hydrogel. In this way, the splicing protection layer 400 can be easily formed on the side surface 103 of the driving backplane 100 by using a mask plate or screen printing.

[0057] In another possible implementation, the splicing protection layer 400 may also be formed of an etchable material, and the protrusion 410 or the recess 420 may be formed by etching with the cooperation of a mask.

[0058] In a possible implementation, the first surface 101 and the second surface 102 are polygonal in shape, the driving backplane 100 includes a plurality of side surfaces 103 , and the splicing protection layer 400 covers at least a portion of each side surface 103 .

[0059] For example, see Figure 7 The first surface 101 and the second surface 102 may both be rectangular, the driving backplane 100 includes four side surfaces 103, and the four side surfaces 103 may all be covered with the splicing protection layer 400. In this way, when the display panel is spliced ​​with other displays around it, the splicing protection layer 400 may provide buffer protection.

[0060] Preferably, the splicing protection layer 400 can completely cover each of the side surfaces 103. In this way, the display panel can be protected from collision to the greatest extent, and light leakage from the splicing seams can be more completely avoided.

[0061] It should be noted that the rectangular shape of the first surface 101 and the second surface 102 is only one implementation method in this embodiment. In other implementation methods of this embodiment, the shapes of the first surface 101 and the second surface 102 can also be other shapes that can achieve large-area splicing, such as regular triangles, regular hexagons, etc., which are not specifically limited in this embodiment.

[0062] In one possible implementation, see Figure 8 The driving backplane 100 includes a side wiring structure 200 extending from the first surface 101 through the side surface 103 to the second surface 102. The side wiring structure 200 is used to connect the circuit structure located on the first surface 101 of the driving backplane 100 and the circuit structure located on the second surface 102 of the driving backplane 100. For example, the circuit structure on one side of the driving backplane 100 provided with the light-emitting device is connected to the driving chip located on the back of the driving backplane 100.

[0063] In this case, the splicing protection layer 400 covers at least a portion of the side wiring structure 200 located on the side surface 103. In this way, the splicing protection layer 400 can protect the side wiring structure 200 from collision or friction during the splicing process, thereby preventing the side wiring structure 200 from breaking.

[0064] Preferably, the splicing protection layer 400 can completely cover the portion of the side wiring structure 200 located on the side surface 103. In this way, the splicing protection layer 400 can more comprehensively protect the side wiring structure 200 from collision or friction.

[0065] Preferably, the side wiring structure 200 includes a conductive wiring 210 extending from the first surface 101 through the side surface 103 to the second surface 102 and an encapsulation layer 220 covering at least a portion of the conductive wiring 210. Preferably, the encapsulation layer 220 can completely cover the conductive wiring 210. The encapsulation layer 220 is used to prevent the conductive wiring 210 from being corroded by water and oxygen, and to avoid short circuits between the conductive wiring 210 and other circuit structures of the display panel. The conductive wiring 210 may include a metal wiring, and the encapsulation layer 220 may include black organic ink or glue.

[0066] This embodiment further provides a spliced ​​display screen, which includes a bearing structure and at least two display panels provided in this embodiment arranged on the bearing structure. The spliced ​​protective layers 400 of adjacent display panels are arranged opposite to each other, and the grooves 420 and the protrusions 410 on the spliced ​​protective layers 400 of adjacent display panels are structured to fit each other.

[0067] In a possible implementation, in the two mutually embedded splicing protection layers 400, in the thickness direction of the display panel, the width of the groove 420 is greater than the width of the protrusion 410. In this way, when the protrusion 410 of one splicing protection layer 400 is embedded in the groove 420 of another splicing protection layer 400, there may be a certain gap between the staggered protrusions 410 of the two splicing protection layers 400.

[0068] This embodiment further provides an electronic device, which includes the spliced ​​display screen provided in this embodiment. The electronic device may include a display, a spliced ​​display screen, a mobile phone, a tablet computer, a laptop computer, a television, and other devices with display functions.

[0069] In summary, the present application provides a display panel, a spliced ​​display screen and an electronic device. A splicing protective layer with grooves or protrusions is set on the side of the display panel to play a buffering role when the display panels are spliced, and the grooves and protrusions of the splicing protective layers of two adjacent display panels are interlocked, which can reduce light leakage in the splicing seams between the display panels.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel comprises: A driving back plate, the driving back plate comprising a first surface, a second surface and a side surface, the first surface and the second surface are arranged opposite to each other in a thickness direction of the driving back plate, and the side surface is located between the first surface and the second surface; A splicing protection layer covers at least a portion of the side surface, wherein the splicing protection layer comprises at least one groove and / or protrusion extending in a direction parallel to the first surface.

2. The display panel according to claim 1, characterized in that: The splicing protection layer includes a plurality of grooves and protrusions arranged along the thickness direction of the driving back plate.

3. The display panel according to claim 2, characterized in that: In the thickness direction of the driving back plate, the width of the protrusion is smaller than the width of the groove.

4. The display panel according to claim 2, characterized in that: The splicing protection layer comprises a plurality of rows of protrusions extending in a direction parallel to the first surface, and the grooves are formed between two adjacent rows of protrusions; Preferably, each row of protrusions comprises at least one disconnected notch, and the disconnected notches of two adjacent rows of protrusions are staggered in their orthographic projections on the plane where the first surface is located.

5. The display panel according to claim 1, characterized in that: The material of the splicing protection layer includes elastic material; Preferably, the color of the splicing protection layer includes black; Preferably, the material of the splicing protection layer includes hydrogel.

6. The display panel according to claim 1, characterized in that: The first surface and the second surface are polygonal in shape, the driving backplane includes a plurality of side surfaces, and the splicing protection layer covers at least a portion of each of the side surfaces.

7. The display panel according to claim 1, characterized in that: The driving backplane includes a side wiring structure extending from the first surface through the side surface to the second surface; the splicing protection layer covers at least a portion of the side wiring structure located on the side surface; Preferably, the side wiring structure includes a conductive wiring extending from the first surface through the side surface to the second surface and a packaging layer covering at least a portion of the conductive wiring.

8. A spliced ​​display screen, characterized in that: The spliced ​​display screen includes a supporting structure and at least two display panels according to any one of claims 1 to 7 arranged on the supporting structure; the splicing protective layers of adjacent display panels are arranged relatively to each other, and the grooves and the protruding structures on the splicing protective layers of adjacent display panels are interlocked with each other.

9. The spliced ​​display screen according to claim 8, characterized in that: In the two splicing protection layers that are embedded with each other, in the thickness direction of the display panel, the width of the groove is greater than the width of the protrusion.

10. An electronic device, characterized in that: The electronic device comprises the spliced ​​display screen according to claim 9.

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