Display panel and spliced display device

Abstract

The invention provides a display panel and a spliced display device, and relates to the technical field of display. The display panel comprises a display part, a cover plate, a first connecting part, a second connecting part and an external circuit board, and the cover plate is stacked on the light-emitting side of the display part; the first connecting part is arranged on one side, facing the cover plate, of the display part and is electrically connected with the display part; the second connecting part is arranged on the side, facing the display part, of the cover plate, and the second connecting part is electrically connected with the first connecting part; and the external circuit board is electrically connected with the second connecting part. The external circuit board can be connected with the display part through the second connecting part and the first connecting part so as to drive the display part to emit light. According to the display panel, a side edge wiring structure and a corresponding side edge packaging structure can be prevented from being arranged on the display part, so that the structure of the display panel is more compact, the splicing seam size of the spliced display device is reduced, and the display effect of the spliced display device is improved.

Description

Technical Field

[0001] The present application relates to a display panel and a spliced ​​display device, belonging to the field of display technology. Background Art

[0002] When currently used in spliced ​​display devices, Micro-LED (micro light-emitting diode display) and Mini-LED (micro-light-emitting diode display) use double-sided wiring, that is, both sides of the display panel in the thickness direction have mutually electrically connected circuit layers. The circuit layer on the back of the display panel is electrically connected to an external circuit board, so that the external circuit board can power the display panel.

[0003] In the related art, in order to realize the electrical connection between the double-sided circuit layers of the spliced ​​display device and the display panel, some display panels electrically connect the two circuit layers by side wiring, which results in poor display effect of the spliced ​​display device and a non-compact structure of the display panel. Summary of the invention

[0004] The present application provides a display panel and a spliced ​​display device, which solve the problems in the related art that the spliced ​​display device has a poor display effect and the display panel has a non-compact structure.

[0005] In a first aspect, the present application provides a display panel, comprising:

[0006] Display unit;

[0007] A cover plate, stacked on the light-emitting side of the display part;

[0008] A first connecting portion, disposed on a side of the display portion facing the cover plate and electrically connected to the display portion;

[0009] A second connecting portion, disposed on a side of the cover plate facing the display portion, the second connecting portion being electrically connected to the first connecting portion;

[0010] An external circuit board is electrically connected to the second connecting portion.

[0011] In some embodiments, the light-emitting side has a display area and a non-display area, the non-display area is located on at least one side of the display area, and the first connecting portion is disposed in the non-display area;

[0012] Preferably, the second connection portion is disposed in an area on the cover plate corresponding to the non-display area.

[0013] In some embodiments, an external connection portion is further included, wherein the external connection portion is electrically connected to both the second connection portion and the external circuit board;

[0014] Preferably, the external connection portion is a flexible connection member;

[0015] Preferably, the cover plate has a binding area, the orthographic projection of the display part on the surface where the cover plate is located is located in the cover plate and is offset from the binding area, and at least part of the external connection part is arranged in the binding area.

[0016] In some embodiments, a third connection portion is further included, wherein the third connection portion is electrically connected to the first connection portion and the second connection portion;

[0017] Preferably, the display panel further comprises a connection layer, wherein the connection layer is arranged between the display portion and the cover plate, opposite sides of the connection layer are respectively connected to the display portion and the cover plate, and the third connection portion passes through the connection layer.

[0018] In some embodiments, the display portion includes a base layer, a driving circuit layer, and a light-emitting layer stacked in sequence, the light-emitting side of the display portion is located on a side of the light-emitting layer facing away from the driving circuit layer, the first connecting portion is located on a side of the base layer facing the driving circuit layer, and the first connecting portion is electrically connected to the driving circuit layer;

[0019] Preferably, the display portion further comprises an encapsulation layer, and the encapsulation layer is arranged on a side of the driving circuit layer facing away from the base layer.

[0020] In some embodiments, a first shading layer is further included, and the first shading layer is disposed on a side of the cover plate facing the display unit, and / or the first shading layer is disposed on a side of the display unit facing the cover plate, the light-emitting layer includes a plurality of display units distributed at intervals, and the orthographic projection of the first shading layer on the surface where the light-emitting side is located is located between two adjacent display units.

[0021] In a second aspect, based on the above display panel, an embodiment of the present application further proposes a spliced ​​display device, comprising a plurality of the above display panels, wherein the plurality of display panels are spliced ​​in an array along a direction perpendicular to the thickness of the display panel.

[0022] In some embodiments, the cover plates of the plurality of display panels are an integrated structure.

[0023] In some embodiments, a second shading layer is further included, the display portion includes a plurality of display units spaced apart on the light-emitting side of the display portion, the edges of adjacent display portions are spliced, the second shading layer is disposed on the cover plate, and at least a portion of the orthographic projection of the second shading layer on the surface where the light-emitting side is located is located at a seam between two adjacent display portions.

[0024] In some embodiments, a fourth connection portion is further included, the fourth connection portion is disposed on the cover plate, the fourth connection portion is electrically connected to the plurality of second connection portions, and the fourth connection portion is also electrically connected to the external circuit board;

[0025] Preferably, the orthographic projection of the fourth connection portion on the surface where the light emitting side is located is located between two adjacent display units, and the fourth connection portion is electrically connected to the second connection portion adjacent to the edge of the cover plate.

[0026] In the display panel provided by the present application, by stacking the cover plate on the light-emitting side of the display part, the cover plate can be connected to the display part, so that the cover plate can support the display part and protect the display part. The first connection part is electrically connected to the second connection part, so that the second connection part is also connected to the display part, and the second connection part is electrically connected to the external circuit board, so that the external circuit board can be connected to the display part to drive the display part to emit light. The first connection part is arranged on the side of the display part facing the cover plate, and the second connection part is arranged on the side of the cover plate facing the display part, so that the first connection part and the second connection part can be directly connected, and the connection part of the first connection part and the second connection part does not have to pass through the side of the display part, thereby avoiding the side wiring structure and the corresponding packaging structure on the display part. In this way, the area of ​​the area where the edge of the display part does not display the picture can be smaller. When the display panel is applied to a spliced ​​display device, the size of the splicing seam between the display panels can be effectively reduced, thereby improving the display effect of the spliced ​​display device. And in this way, the structure of the display panel can be more compact.

[0027] In the spliced ​​display device provided by the present application, since the display panel of the present application is applied and the display panel does not need to be provided with side wiring, the display panel structure is compact, and the area of ​​the edge of the display panel where the picture is not displayed is smaller. Therefore, when multiple display panels are spliced, the size of the splicing seams between the display panels can be effectively reduced, so that the spliced ​​display device has a better display effect and the overall structure of the spliced ​​display device is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other purposes, features and advantages of the embodiments of the present application will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, multiple embodiments of the present application will be described in an exemplary and non-limiting manner, wherein:

[0029] Figure 1 A schematic diagram of a display panel according to an embodiment of the present application;

[0030] Figure 2 A schematic diagram of a display portion of a display panel according to an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the connection between the external connection portion of the display panel and the cover plate according to an embodiment of the present application;

[0032] Figure 4 A schematic diagram of an external connection portion of a display panel according to an embodiment of the present application;

[0033] Figure 5 It is a schematic diagram of a connection layer of a display panel according to an embodiment of the present application being disposed in a non-display area of ​​a display portion;

[0034] Figure 6 A three-dimensional diagram of a spliced ​​display device according to an embodiment of the present application;

[0035] Figure 7 A schematic diagram of the internal structure of a spliced ​​display device according to an embodiment of the present application;

[0036] Figure 8 It is a schematic structural diagram of a cover plate of a spliced ​​display device according to an embodiment of the present application.

[0037] Reference numerals:

[0038] 100 - display part, 110 - base layer, 120 - driving circuit layer, 130 - light-emitting layer, 131 - display unit, 140 - encapsulation layer, 150 - light-emitting side, 151 - display area, 152 - non-display area,

[0039] 200-cover plate, 210-binding area, 220-first light shielding layer, 230-second light shielding layer,

[0040] 300-first connection part, 310-third connection part,

[0041] 400- second connection part,

[0042] 500 - External circuit board,

[0043] 600-connection layer,

[0044] 700-External connection part,

[0045] 800-Fourth connection part. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] When currently used in spliced ​​display devices, Micro-LED (micro light-emitting diode display) and Mini-LED (micro-light-emitting diode display) use double-sided wiring, that is, both sides of the display panel in the thickness direction have mutually electrically connected circuit layers. The circuit layer on the back of the display panel is electrically connected to an external circuit board, so that the external circuit board can power the display panel.

[0053] In the related art, in order to realize the electrical connection between the double-sided circuit layers of the spliced ​​display device and the display panel, some display panels electrically connect the two circuit layers by side wiring, which results in poor display effect of the spliced ​​display device and a non-compact structure of the display panel.

[0054] In the display panel provided by the present application, by stacking the cover plate on the light-emitting side of the display part, the cover plate can be connected to the display part, so that the cover plate can support the display part and protect the display part. The first connection part is electrically connected to the second connection part, so that the second connection part is also connected to the display part, and the second connection part is electrically connected to the external circuit board, so that the external circuit board can be connected to the display part to drive the display part to emit light. The first connection part is arranged on the side of the display part facing the cover plate, and the second connection part is arranged on the side of the cover plate facing the display part, so that the first connection part and the second connection part can be directly connected, and the connection part of the first connection part and the second connection part does not have to pass through the side of the display part, thereby avoiding the side wiring structure and the corresponding packaging structure on the display part. In this way, the area of ​​the area where the edge of the display part does not display the picture can be smaller. When the display panel is applied to a spliced ​​display device, the size of the splicing seam between the display panels can be effectively reduced, thereby improving the display effect of the spliced ​​display device. And in this way, the structure of the display panel can be more compact.

[0055] In the spliced ​​display device provided by the present application, since the display panel of the present application is applied and the display panel does not need to be provided with side wiring, the display panel structure is compact, and the area of ​​the edge of the display panel where the picture is not displayed is smaller. Therefore, when multiple display panels are spliced, the size of the splicing seams between the display panels can be effectively reduced, so that the spliced ​​display device has a better display effect and the overall structure of the spliced ​​display device is compact.

[0056] The display panel provided in the present application is described in detail below in conjunction with specific embodiments.

[0057] The present application embodiment provides a display panel, referring to Figure 1 As shown, the display unit 100 , the cover plate 200 , the first connection portion 300 , the second connection portion 400 and the external circuit board 500 are included.

[0058] The cover plate 200 is stacked on the light emitting side 150 of the display unit 100. The first connection portion 300 is disposed on the display unit 100 and is electrically connected to the display unit 100. The second connection portion 400 is disposed on a side of the cover plate 200 facing the display unit 100, and the second connection portion 400 is electrically connected to the first connection portion 300. The external circuit board 500 is electrically connected to the second connection portion 400.

[0059] The display panel can be a Mini-LED display device (micro light emitting diode display) and a Micro-LED display device (micro light emitting diode display). The display panel can be applied to electronic devices, and the electronic devices can specifically be mobile phones, tablet computers, laptop computers, PDAs, in-vehicle electronic devices, wearable devices, ultramobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs) and other mobile devices, and can also be personal computers (PCs), televisions (TVs), ATMs, or self-service machines and other non-mobile devices. Therefore, the embodiment of the present application can also provide an electronic device, which includes the display panel described above.

[0060] The display unit 100 can emit light to display a picture. Specifically, the display unit 100 has a light-emitting side 150. The light-emitting side 150 of the display unit 100 can emit light to display a picture. The cover plate 200 is superimposed on the light-emitting side 150 of the display unit 100, so the cover plate 200 can be connected to the display unit 100, so that the cover plate 200 can support the display unit 100. At the same time, the cover plate 200 covers the light-emitting side 150 of the display unit 100 and can also protect the light-emitting side 150 of the display unit 100, preventing the light-emitting side 150 of the display unit 100 from being bumped and worn. Specifically, the cover plate 200 can be made of a light-transmitting material, or further made of a transparent material, so that the cover plate 200 does not affect the light-emitting effect of the display unit 100.

[0061] The first connection portion 300 is disposed on the display portion 100, and the first connection portion 300 is electrically connected to the display portion 100. Specifically, the first connection portion 300 is connected to the electrical connection structure in the display portion 100, and therefore, the first connection portion 300 is also an electrical connection structure. The second connection portion 400 is disposed on the cover plate 200, and the second connection portion 400 is electrically connected to the first connection portion 300, and therefore, the second connection portion 400 can be electrically connected to the display portion 100.

[0062] The external circuit board 500 is the processing core of the display panel. The external circuit board 500 is electrically connected to the second connection portion 400 provided on the cover plate 200. Therefore, the external circuit board 500 can be electrically connected to the display unit 100 through the second connection portion 400 and the first connection portion 300. The external circuit board 500 can drive the display unit 100 to emit light. Specifically, the external circuit board 500 can transmit electrical signals to the display unit 100 and provide electrical energy.

[0063] The first connection part 300 can be arranged on the side of the display part 100 facing the cover plate 200, and the second connection part 400 can be arranged on the side of the cover plate 200 facing the display part 100. In this way, the first connection part 300 and the second connection part 400 can be arranged opposite to each other, so that the first connection part 300 and the second connection part 400 can be directly connected, and the connection part of the first connection part 300 and the second connection part 400 does not need to pass through the side of the display part 100, thereby avoiding the side wiring structure on the display part 100. In this way, the area of ​​the area where the screen is not displayed on the edge of the display part 100 can be smaller, so that the display panel has a better display effect.

[0064] In some embodiments, reference Figure 1 and Figure 2 As shown, the light emitting side 150 has a display area 151 and a non-display area 152, the non-display area 152 is located at least on one side of the display area 151, and the first connection portion 300 is disposed in the non-display area 152. The second connection portion 400 is disposed in an area on the cover plate 200 corresponding to the non-display area 152.

[0065] The light-emitting side 150 of the display unit 100 of the present application has a display area 151 and a non-display area 152, wherein the display area 151 is located on at least one side of the non-display area 152, wherein the display area 151 can emit light to display a picture, and the non-display area 152 does not display a picture. Specifically, the display area 151 of the display unit 100 can be located in the middle part of the display unit 100, and the LED chip and other structures of the display unit 100 are arranged opposite to the display area 151, and the non-display area 152 can be surrounded by the display area 151 as a protective structure such as a frame of the display unit 100. In the present application, the first connecting portion 300 can be arranged in the non-display area 152 of the display unit 100, and accordingly, the first connecting portion 300 and the display area 151 of the display unit 100 are staggered, so that the first connecting portion 300 will not block the display area 151 of the display unit 100, so that the display effect of the display panel is not interfered by the first connecting portion 300.

[0066] Specifically, the non-display area 152 of the display unit 100 can be located at the edge of the light-emitting side 150 of the display unit 100 and the side of the display unit 100. Therefore, the first connection portion 300 can also be arranged at the edge of the light-emitting side 150 of the display unit 100, so that the first connection portion 300 can be staggered with the display area 151 of the display unit 100, so that the first connection portion 300 does not affect the display effect of the display unit 100. The first connection portion 300 can also be arranged at the side of the display unit 100, so that the first connection portion 300 can also be staggered with the display area 151 of the display unit 100, so that the first connection portion 300 does not affect the display effect of the display unit 100. The first connection portion 300 may also be partially disposed at the edge of the light-emitting side 150 of the display portion 100 , and another portion of the first connection portion 300 may be disposed at the side portion of the display portion 100 , so that the first connection portion 300 may also be offset from the display area 151 of the display portion 100 , so that the first connection portion 300 does not affect the display effect of the display portion 100 .

[0067] In some embodiments, reference Figure 1 , Figure 3 and Figure 4 As shown, the display panel further includes an external connection portion 700, and the external connection portion 700 is electrically connected to both the second connection portion 400 and the external circuit board 500. The external connection portion 700 is a flexible connection member. The cover plate 200 has a binding area 210, and the orthographic projection of the display portion 100 on the surface where the cover plate 200 is located is located in the cover plate 200 and is misaligned with the binding area 210, and at least part of the external connection portion 700 is arranged in the binding area 210.

[0068] The external connection part 700 is disposed on the cover plate 200, and the external connection part 700 is electrically connected to the external circuit board 500. Specifically, a binding area 210 is disposed on the cover plate 200, and the binding area 210 is provided with a binding electrical connection structure connected to the second connection part 400, and at least a portion of the external connection part 700 is located in the binding area 210, so that the external connection part 700 can be connected to the binding electrical connection structure. The external connection part 700 is connected to the binding area 210 in a high temperature and high pressure environment. Since the binding area 210 is disposed on the cover plate 200, so that the external connection part 700 is disposed on the cover plate 200, the display part 100 can be unaffected by the high temperature and high pressure environment.

[0069] It should be understood that when the display panel of the present application is a Mini-LED display panel or a Micro-LED display panel, a plurality of luminous LED lamp bead chips can be provided on the display unit 100, and the LED chips are fixed on the light-emitting side 150 of the display unit 100 through a bonding process. In addition, it should also be understood that the external connection part 700 is fixed to the binding area 210 of the cover plate 200 through a binding process, and the binding process needs to be performed in a high temperature and high pressure environment. In the present application, since the binding area 210 is provided on the cover plate 200, it is not necessary to provide a binding process structure for connecting with the external connection part 700 on the display unit 100, so that the display unit 100 does not need to be placed in a high temperature and high pressure environment, so that the bonding effect between the LED chip on the display unit 100 and the display unit 100 body will not be affected, thereby preventing the LED chip from being damaged in bonding.

[0070] When the cover plate 200 is stacked on the display portion 100 , the display portion 100 can form an orthographic projection on the surface of the cover plate 200 , and the orthographic projection is located inside the cover plate 200 . Therefore, the cover plate 200 can completely cover the display portion 100 inside, so that the cover plate 200 fully protects the display portion 100 .

[0071] The binding area 210 is located on one side of the orthographic projection of the display unit 100, so the binding area 210 does not overlap with the orthographic projection of the display unit 100 on the cover plate 200, and accordingly, the display unit 100 and the external connection part 700 do not overlap, so that the external connection part 700 does not cover the display unit 100, so that the external connection part 700 does not affect the display effect of the display unit 100. The number of binding areas 210 can also be set to multiple, and accordingly, the external connection part 700 can have multiple connection parts respectively fixed to multiple binding areas 210, so that the connection effect between the external connection part 700 and the cover plate 200 is more stable and reliable.

[0072] The cover plate 200 can be made of a high temperature resistant material, such as quartz glass, so that when the external connection part 700 is fixed to the binding area 210 of the cover plate 200 through a binding process, the cover plate 200 will not be damaged even if it is in a high temperature and high pressure environment. Therefore, when preparing the display panel of the present application, the display part 100 and the cover plate 200 can be prepared separately, and then the external connection part 700 is connected to the second connection part 400 provided on the cover plate 200, and then the second connection part 400 is electrically connected to the first connection part 300.

[0073] In the present application, the external connection part 700 can be specifically arranged on the side of the cover plate 200 facing the display part 100, so that the cover plate 200 can also protect the external connection part 700 and prevent the external connection part 700 from being bumped and worn. In order to enable the display panel to display the picture normally, the part of the cover plate 200 that overlaps with the orthographic projection of the display part 100 on the cover plate 200 can be set to a transparent plate structure, so that the picture displayed by the display part 100 can be displayed normally through the cover plate 200. The binding area 210 on the cover plate 200 can be set to an ink color structure, so that the external connection part 700 arranged in the binding area 210 can be blocked, thereby making the display panel of the present application more beautiful.

[0074] The external connection part 700 is a flexible electrical connection part, so the external connection part 700 can be driven to deform. Since the external connection part 700 can be driven to deform, the external connection part 700 can be deformed according to the relative position of the external circuit board 500 and the display part 100, so that the external connection part 700 can be adapted to connect the external circuit board 500 and the second connection part 210, thereby making the structure of the display panel of the present application more compact.

[0075] The external connection part 700 may specifically include a die attach film 710 and a flexible circuit board 720, one end of the flexible circuit board 720 is connected to the external circuit board 500, and the other end of the flexible circuit board 720 is connected to the die attach film 710, and the die attach film 710 is electrically connected to the second connection part 400 through a binding process.

[0076] In some embodiments, reference Figure 1 As shown, the display panel further includes a third connection portion 310, which is connected to the first connection portion 300 and the second connection portion 400. The display panel further includes a connection layer 600, which is disposed between the display portion 100 and the cover plate 200, and the opposite sides of the connection layer 600 are respectively connected to the display portion 100 and the cover plate 200, and the third connection portion 310 is penetrated through the connection layer 600.

[0077] When the cover plate 200 is stacked on the display portion 100, the first connection portion 300 can form an orthographic projection on the surface where the cover plate 200 is located, and the orthographic projection can overlap with at least a portion of the second connection portion 400 disposed on the cover plate 200, so that the first connection portion 300 and the second connection portion 400 can be disposed opposite to each other, so that the spacing between the first connection portion 300 and the second connection portion 400 is relatively minimal, so that the electrical connection structure that electrically connects the first connection portion 300 and the second connection portion 400 is more compact. Specifically, the first connection portion 300 and the second connection portion 400 can be electrically connected through the third connection portion 310, and the third connection portion 310 can be specifically an electric wire. The two ends of the third connection portion 310 can be electrically connected to the opposite parts of the first connection portion 300 and the second connection portion 400, respectively, so that the length of the third connection portion 310 is relatively short, so that the structure of the third connection portion 310 is more compact, and the transmission of electrical signals between the first connection portion 300 and the second connection portion 400 is also more stable.

[0078] Specifically, the first connection part 300 and the second connection part 400 may adopt a pad structure, and the connection ends of the first connection part 300 and the second connection part 400 are arranged opposite to each other, so that the length of the third connection part 310 between the first connection part 300 and the second connection part 400 can be further shortened. Since the third connection part 310 between the first connection part 300 and the second connection part 400 has a more compact structure, the space between the cover plate 200 and the display part 100 is relatively more sufficient, thereby providing more sufficient installation space for other components of the display panel.

[0079] refer to Figure 1 As shown, the cover plate 200 is connected to the display unit 100 through the connection layer 600. The connection layer 600 is disposed between the display unit 100 and the cover plate 200. Specifically, the connection layer 600 is stacked on the side of the display unit 100 facing the cover plate 200, and the opposite sides of the connection layer 600 are respectively connected to the display unit 100 and the cover plate 200, so that the display unit 100 and the cover plate 200 can be relatively fixed. The connection layer 600 can adopt an adhesive structure, so that the display unit 100 and the cover plate 200 can be bonded and fixed.

[0080] refer to Figure 2 and Figure 5As shown, when the light emitting side 150 of the display unit 100 has a display area 151 and a non-display area 152, the connection layer 600 can be overlapped on the non-display area 152 of the display unit 100, that is, the connection layer 600 is overlapped on the peripheral part of the display unit 100, so that the connection layer 600 will not block the display area 151 of the display unit 100, so that the connection layer 600 does not affect the display effect of the display unit 100. Of course, the connection layer 600 can also be arranged in the non-display area 152 on the side of the display unit 100, and accordingly, the cover plate 200 can be set to a structure that can be buckled with the display unit 100, so that the side of the cover plate 200 can also be opposite to the side of the display unit 100, and the connection layer 600 can be arranged between the side of the display unit 100 and the side of the cover plate 200, so that the cover plate 200 and the display unit 100 are fixed. When the cover plate 200 buckles the side edge of the display unit 100 inwardly, the cover plate 200 has a better protection effect on the display unit 100 and can prevent the edge of the display unit 100 from being bumped and worn.

[0081] In addition, in other embodiments, reference Figure 1 As shown, the connection layer 600 can also be coated on the entire light-emitting side 150 of the display unit 100, so that the connection layer 600 can be a complete layered structure, and the contact surface area of ​​the connection layer 600 with the display unit 100 and the cover plate 200 is larger, so that the connection effect of the connection layer 600 with the display unit 100 and the cover plate 200 is more reliable. Of course, it should be noted that at this time, the connection layer 600 can adopt a transparent adhesive structure, so that the connection layer 600 does not affect the display effect of the display unit 100. Specifically, the connection layer 600 can use OCA (optical adhesive tape) or OCR (liquid optical adhesive) with high light transmittance, so that the light emitted from the light-emitting side 150 of the display unit 100 can pass through the connection layer 600 more completely.

[0082] In some embodiments, reference Figure 1 As shown, the display unit 100 includes a substrate layer 110, a driving circuit layer 120 and a light-emitting layer 130 which are stacked in sequence, the light-emitting side 150 of the display unit 100 is located on the side of the light-emitting layer 130 facing away from the driving circuit layer 120, the first connecting portion 300 is located on the side of the substrate layer 110 facing the driving circuit layer 120, and the first connecting portion 300 is electrically connected to the driving circuit layer 120; the display unit 100 also includes an encapsulation layer 140, which is arranged on the side of the driving circuit layer 120 facing away from the substrate layer 110.

[0083] Among them, the base layer 110 is the basic component of the display unit 100, and the base layer 110 can provide an installation foundation for at least some of the other components of the display unit 100. When the display panel of the present application is a rigid display device, the base layer 110 can specifically adopt a glass substrate so that the base layer 110 has good structural strength. When the display panel of the present application is a flexible display device, the base layer 110 can specifically be prepared using a polyimide material. The present application does not limit the specific material of the base layer 110. The driving circuit layer 120 can be superimposed on the base layer 110, and the driving circuit layer 120 can specifically be set as a TFT driving circuit, that is, a thin film transistor driving circuit. Of course, the driving circuit layer 120 can also be other circuit structures, which is not limited by the present application. The light-emitting layer 130 is stacked on the side of the driving circuit layer 120 facing away from the base layer 110, and the light-emitting layer 130 is also electrically connected to the driving circuit layer 120. The light-emitting side 150 of the display unit 100 is located on the light-emitting layer 130 and on the side of the light-emitting layer 130 facing away from the driving circuit layer 120, so that the display panel of the present application is a top light-emitting structure. The encapsulation layer 140 is stacked on the light-emitting layer 130. Specifically, the encapsulation layer 140 covers the light-emitting layer 130 to protect and encapsulate the light-emitting layer 130.

[0084] When the connecting layer 600 uses OCA (optical tape) or OCR (liquid optical glue) with high light transmittance, the connecting layer 600 can also serve the purpose of encapsulating and protecting the light-emitting layer 130. In this case, there is no need to set the encapsulation layer 140, so that the structure of the display panel of the present application is more compact.

[0085] In the present application, the light-emitting side 150 of the display unit 100 is the side of the light-emitting layer 130 facing away from the driving circuit layer 120. The display unit 100 also has a backlight side, which is the side of the base layer 110 facing away from the driving circuit layer 120. The first connection portion 300 is connected to the driving circuit layer 120, so that the external circuit board 500 can be electrically connected to the driving circuit layer 120 through the second connection portion 400 and the first connection portion 300, so that the external circuit board 500 can control the driving circuit layer 120 to drive the light-emitting layer 130 to emit light to display a picture. The driving circuit layer 120 is specifically a circuit structure arranged on the base layer 110, so the driving circuit layer 120 has various wire structures. It should be understood that when preparing the display unit 100, the base layer 110 needs to be placed on a carrier, and the driving circuit layer 120, the light-emitting layer 130 and the packaging layer 140 are stacked in sequence through a semiconductor process. The side of the base layer 110 facing away from the driving circuit layer 120 is in contact with the carrier, so the driving circuit layer 120 is not in contact with the carrier. This can avoid the driving circuit layer 120 from being worn due to contact with the carrier, thereby protecting the driving circuit layer 120, and further protecting the display unit 100, so that the display function of the display unit 100 is normal.

[0086] The first connection part 300 is electrically connected to the driving circuit layer 120. Specifically, the first connection part 300 can be disposed on the driving circuit layer 120. The first connection part 300 can be connected to the second connection part 400 through a line passing through the encapsulation layer 140, or the first connection part 300 can be partially located outside the encapsulation layer 140, which is not limited in this application. The first connection part 300 is connected to the driving circuit layer 120, so that the first connection part 300 does not contact the carrier when the display panel of the present application is prepared, thereby preventing the first connection part 300 from being damaged by wear.

[0087] In some embodiments, reference Figure 1 As shown, the display panel also includes a first shading layer 220, which is disposed on the side of the cover plate 200 facing the display unit 100, and / or the first shading layer 220 is disposed on the side of the display unit 100 facing the cover plate 200, the light-emitting layer 130 includes a plurality of display units 131 distributed at intervals, and the orthographic projection of the first shading layer 220 on the surface where the light-emitting side 150 is located is located between two adjacent display units 131.

[0088] In a direction perpendicular to the thickness of the display panel, a plurality of display units 131 are distributed on the driving circuit layer 120 at intervals. Specifically, the plurality of display units 131 may be distributed in an array, and each display unit 131 is a pixel. In order to make the display panel of the present application have a better display effect, the display panel may also be provided with a first light shielding layer 220, and the first light shielding layer 220 may be provided on the side of the cover plate 200 facing the display unit 100. When the cover plate 200 is superimposed on the display unit 100, the first light shielding layer 220 may form an orthographic projection on the surface where the light emitting side 150 of the display unit 100 is located, and the orthographic projection is located between two adjacent display units 131, so that the first light shielding layer 220 can block the light between the two adjacent display units 131, thereby making the contrast of the display panel of the present application higher, so as to make the display effect of the display panel better. In addition, the first light shielding layer 220 may also be disposed on the display unit 100 and located on the side of the display unit 100 facing the cover plate 200, and the projection formed by the first light shielding layer 220 on the surface where the light emitting side of the display unit 100 is located is also located between adjacent display units 131. Alternatively, the first light shielding layer 220 may be partially disposed on the display unit 100 and partially disposed on the cover plate 200, and this application does not limit this.

[0089] The first light shielding layer 220 may be made of BM glue (Black Matrix), which is a photoresist material used in semiconductor manufacturing, and its main components are styrene-butadiene copolymer and methyl acrylate-methyl methacrylate copolymer. By using BM glue as the first light shielding layer 220, the light between adjacent display units 131 can be effectively shielded.

[0090] In addition, it should be understood that the area between adjacent display units 131 does not display the image, so the area between adjacent display units 131 is also a non-display area 152, and the first connecting portion 300 can also be arranged in the non-display area 152 between adjacent display units 131, so that the first connecting portion 300 will not interfere with the light emission of the display unit 131.

[0091] Based on the above display panel, an embodiment of the present application further proposes a spliced ​​display device, which includes a plurality of the above display panels, and the plurality of display panels are arranged in an array along a thickness direction perpendicular to the display panel.

[0092] refer to Figure 6 and Figure 7 As shown, when the number of display panels is multiple, the number of display units 100, cover plate 200, first connection part 300 and second connection part 400 are all multiple, and multiple display units 100 can be arranged in an array along a direction perpendicular to the thickness of the display unit 100. Specifically, multiple display units 100 can be arranged along a first direction, that is, in the X direction, and multiple display units 100 can also be arranged along a second direction, that is, in the Y direction, and the second direction is perpendicular to the first direction. Multiple display units 100 can also be arranged along both the first direction and the second direction, so that multiple display units 100 of the spliced ​​display device of the present application can be spliced. Multiple display units 100 arranged in an array can display pictures synchronously to form a display device with a larger size. By setting the number of display units 100, the size and specifications of the spliced ​​display device of the present application can be changed. The specific number and arrangement of the display units 100 are not limited by the present application. Specifically, if the display portion 100 of the present application is a special-shaped structure, for example, the edge of the display portion 100 is an arc structure, a plurality of display portions 100 may also be arranged in a circular array at a certain center point.

[0093] Multiple display units 100 can be arranged in sequence along the first direction or the second direction. Specifically, the relatively close edges of two adjacent display units 100 can be spliced ​​together, so that the gap between the relative edges of the two adjacent display units 100 is smaller, so that when the spliced ​​display device of the application displays the picture, the area of ​​the region where the picture is not displayed between the adjacent display units 100 is smaller, so that the display unit 100 has a better display effect.

[0094] The multiple cover plates 200 can be respectively stacked on the light-emitting sides 150 of the multiple display units 100, so the multiple cover plates 200 can protect the multiple display units 100. The multiple first connection parts 300 can be respectively arranged on the multiple display units 100, and of course, multiple first connection parts 300 can also be arranged on any display unit 100. The multiple second connection parts 400 can be arranged on the cover plate 200, and the multiple second connection parts 400 can be respectively connected to the multiple first connection parts 300, or any second connection part 400 can also be connected to the multiple first connection parts 300, or any first connection part 300 can also be connected to the multiple second connection parts 400. The external circuit board 500 is electrically connected to the multiple second connection parts 400, so that the external circuit board 500 can be electrically connected to the first connection parts 300 arranged on the multiple display units 100, so that the external circuit board 500 can drive the multiple display units 100 to display pictures.

[0095] Since the display parts 100 and the cover plate 200 of the multiple display panels of the spliced ​​display device are directly connected through the first connection part 300 and the second connection part 400, it is not necessary to set a side wiring structure on the display part 100, thereby making the structure of the display panel compact. In this way, when the edges of two adjacent display panels are spliced, the distance between the adjacent display units 131 of the two adjacent display parts 100 can be smaller, so that the area of ​​the area between the two adjacent display parts 100 where the picture is not displayed is smaller. In this way, the splicing parts of the spliced ​​display device can be weakened, so that the display effect of the spliced ​​display device is better.

[0096] In some embodiments, reference Figure 6 and Figure 7 As shown, the plurality of cover plates 200 are an integrated structure.

[0097] When the multiple cover plates 200 are an integrated structure, that is, the number of cover plates 200 is one, and one cover plate 200 can cover all the multiple display units 100. Using one cover plate 200 to cover all the display units 100 can make the cover plate 200 more integrated and have better structural strength.

[0098] In some embodiments, reference Figure 7 As shown, the display panel also includes a second shading layer 230, the display portion 100 includes a plurality of display units 131 spaced apart and distributed on the light-emitting side 150 of the display portion 100, the edges of adjacent display portions 100 are spliced, the second shading layer 230 is disposed on the cover plate 200, and at least a portion of the orthographic projection of the second shading layer 230 on the surface where the light-emitting side 150 is located is located in the seam between two adjacent display portions 100.

[0099] The second light shielding layer 230 can be arranged on the side of the cover plate 200 facing the display unit 100. When the edges of two adjacent display units 100 are butted or spaced, there is a seam between the two display units 100 where no picture can be displayed. When the cover plate 200 is stacked on the display unit 100, the second light shielding layer 230 can form an orthographic projection on the surface where the light-emitting side 150 of the display unit 100 is located, and at least part of the orthographic projection is located at the seam between the two adjacent display units 100, so that the second light shielding layer 230 can block the light between the two adjacent display units 100, thereby making the contrast of the display panel of the present application higher, so that the display effect of the display panel is better. Specifically, the second light shielding layer 230 can be arranged between the two display units 131 that are most adjacent to the two adjacent display units 100, so that the second light shielding layer 230 can fully block the area between the two adjacent display units 100 where the picture is not displayed. When the adjacent display units 131 in two adjacent display units 100 have a certain distance from the edge of the corresponding display unit 100, the portion of the second light shielding layer 230 that forms a positive projection on the surface where the light emitting side 150 of the display unit 100 is located is also located on the two adjacent display units 100. The second light shielding layer 230 can also be made of BM glue. By using BM glue as the second light shielding layer 230, the light between the adjacent display units 131 can be effectively shielded, so that the splicing seam of the spliced ​​display device of the present application is invisible in the ink display state, and the display effect of the spliced ​​display device is more consistent.

[0100] In some embodiments, reference Figure 7 and Figure 8 As shown, the display panel further includes a fourth connection portion 800, which is disposed on the cover plate 200, and is electrically connected to the plurality of second connection portions 400, and is also electrically connected to the external circuit board 500. The orthographic projection of the fourth connection portion 800 on the surface where the light emitting side 150 is located is located between two adjacent display units 131, and the fourth connection portion 800 is electrically connected to the second connection portion 400 adjacent to the edge of the cover plate 200.

[0101] Among them, the fourth connection part 800 can be arranged on the cover plate 200, and the fourth connection part 800 is electrically connected to the external circuit board 500 and the plurality of second connection parts 400, so that the external circuit board 500 can be electrically connected to the plurality of second connection parts 400 through the fourth connection part 800. Specifically, the fourth connection part 800 can be a wire structure, and the fourth connection part 800 is electrically connected to the external circuit board 500 through the external connection part 700. When the cover plate 200 is stacked on the display unit 100, the fourth connection part 800 can form an orthographic projection on the surface where the light-emitting side 150 of the display unit 100 is located, and the orthographic projection is located between two adjacent display units 131, so that the fourth connection part 800 will not block the display unit 131, thereby making the display effect of the display unit 100 better.

[0102] Of course, in other embodiments, the fourth connection portion 800 can also be arranged on the display portion 100, specifically, on the driving circuit layer 120 or the base layer 110 of the display portion 100, and the fourth connection portion 800 can be electrically connected to the first connection portions 300 on multiple display portions 100. Correspondingly, the number of the second connection portions 400 on the cover plate 200 can be set to one, and the second connection portion 400 can be connected to any one of the first connection portions 300, so that the second connection portion 400 can be electrically connected to all the first connection portions 300 connected to the fourth connection portion 800.

[0103] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A display panel, characterized in that: include: Display unit; A cover plate, stacked on the light-emitting side of the display part; A first connecting portion, disposed on a side of the display portion facing the cover plate and electrically connected to the display portion; A second connecting portion, disposed on a side of the cover plate facing the display portion, the second connecting portion being electrically connected to the first connecting portion; An external circuit board is electrically connected to the second connecting portion.

2. The display panel according to claim 1, characterized in that: The light-emitting side has a display area and a non-display area, the non-display area is located at least on one side of the display area, and the first connecting portion is arranged in the non-display area; Preferably, the second connection portion is disposed in an area on the cover plate corresponding to the non-display area.

3. The display panel according to claim 2, characterized in that: Also comprising an external connection portion, the external connection portion being electrically connected to both the second connection portion and the external circuit board; Preferably, the external connection portion is a flexible connection member; Preferably, the cover plate has a binding area, the orthographic projection of the display part on the surface where the cover plate is located is located in the cover plate and is offset from the binding area, and at least part of the external connection part is arranged in the binding area.

4. The display panel according to claim 1, characterized in that: Also includes a third connection portion, the third connection portion being electrically connected to the first connection portion and the second connection portion; Preferably, the display panel further comprises a connection layer, wherein the connection layer is arranged between the display portion and the cover plate, opposite sides of the connection layer are respectively connected to the display portion and the cover plate, and the third connection portion passes through the connection layer.

5. The display panel according to claim 1, characterized in that: The display portion comprises a base layer, a driving circuit layer and a light-emitting layer which are stacked in sequence, the light-emitting side of the display portion is located on the side of the light-emitting layer facing away from the driving circuit layer, the first connecting portion is located on the side of the base layer facing the driving circuit layer, and the first connecting portion is electrically connected to the driving circuit layer; Preferably, the display portion further comprises an encapsulation layer, and the encapsulation layer is arranged on a side of the driving circuit layer facing away from the base layer.

6. The display panel according to claim 5, characterized in that: It also includes a first shading layer, which is arranged on the side of the cover plate facing the display unit, and / or the first shading layer is arranged on the side of the display unit facing the cover plate, the light-emitting layer includes a plurality of display units distributed at intervals, and the orthographic projection of the first shading layer on the surface where the light-emitting side is located is located between two adjacent display units.

7. A spliced ​​display device, characterized in that: It comprises a plurality of display panels as described in any one of claims 1 to 6, wherein the plurality of display panels are spliced ​​in an array along a direction perpendicular to the thickness of the display panels.

8. The spliced ​​display device according to claim 7, characterized in that: The cover plates of the plurality of display panels are an integrated structure.

9. The spliced ​​display device according to claim 7, characterized in that: It also includes a second shading layer, the display part includes a plurality of display units spaced apart on the light-emitting side of the display part, the edges of adjacent display parts are spliced, the second shading layer is arranged on the cover plate of the display panel, and at least a part of the orthographic projection of the second shading layer on the surface where the light-emitting side is located is located in the joint between two adjacent display parts.

10. The spliced ​​display device according to claim 9, characterized in that: The display panel further includes a fourth connection portion, the fourth connection portion is disposed on the cover plate, the fourth connection portion is electrically connected to the plurality of second connection portions, and the fourth connection portion is also electrically connected to an external circuit board of the display panel; Preferably, the orthographic projection of the fourth connection portion on the surface where the light emitting side is located is located between two adjacent display units, and the fourth connection portion is electrically connected to the second connection portion adjacent to the edge of the cover plate.

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