Display device

Abstract

The invention provides a display device and a preparation method thereof, and relates to the technical field of display devices. The display device comprises a plurality of display panels, a first connecting piece and an external circuit board, and the plurality of display panels can display pictures. The first connecting piece is electrically connected with the electric connecting layers of the plurality of display panels, so that the first connecting piece can be electrically connected with the plurality of display panels. The external circuit board is electrically connected with the first connecting piece or the electric connecting layer of any display panel, so that the external circuit board can be electrically connected with the multiple display panels, the external circuit board can input electric signals to the multiple display panels, and the multiple display panels can display images. Therefore, the number of electric connection structures between the external circuit board and the display panel can be reduced, so that the number of parts of the display device is smaller, the complexity of the preparation process flow of the display device is reduced, and the preparation cost is lower.

Description

Technical Field

[0001] The present application relates to a display device, and belongs to the technical field of display equipment. Background Art

[0002] In order to meet the application needs of large-size display screens in current commercial display, vehicle-mounted display and other fields, major panel manufacturers use multiple small-size spliced ​​display panels to achieve large-size display screens.

[0003] At present, in a spliced ​​display device, each small-sized splicing unit is independently driven through a circuit, which results in a complex circuit of the spliced ​​display device and a large number of connecting components, thereby causing a complex manufacturing process of the spliced ​​display device and high cost. Summary of the invention

[0004] The present application provides a display device, which solves the problem of complex and high cost manufacturing process of spliced ​​display devices in the related art.

[0005] The present application provides a display device, comprising:

[0006] A plurality of display panels, wherein the plurality of display panels are arranged in an array, each of the display panels comprises a base layer, a driving circuit layer and a light-emitting layer which are stacked in sequence, an electrical connection layer is arranged on a side of the base layer away from the driving circuit layer, and the electrical connection layer is electrically connected to the driving circuit layer;

[0007] a first connecting member, the first connecting member being disposed on the display panel, and the first connecting member electrically connecting the electrical connection layers of two adjacent display panels;

[0008] An external circuit board is electrically connected to the first connecting member or the electrical connection layer of any one of the display panels.

[0009] In some embodiments, the display panel further includes a second connecting member, the second connecting member is disposed on a side wall of the base layer, one end of the second connecting member is electrically connected to the electrical connection layer, the other end of the second connecting member is electrically connected to the driving circuit layer, and the second connecting member is also electrically connected to the first connecting member;

[0010] The first connecting member connects the electrical connection layers of the two adjacent display panels through the second connecting members of the two adjacent display panels.

[0011] In some embodiments, the first connecting member is located between two adjacent display panels and bonds the two adjacent display panels;

[0012] The second connecting members of two adjacent display panels are electrically connected through the first connecting member.

[0013] In some embodiments, the first connecting member is an anisotropic conductive adhesive containing conductive particles;

[0014] Preferably, the anisotropic conductive adhesive comprises thermosetting epoxy resin adhesive; and / or the conductive particles comprise gold-plated and / or nickel-plated resin particles; and / or the first connector is doped with black pigment; and / or the refractive index of the conductive particles is in the range of 1.5-1.7.

[0015] In some embodiments, the display panel further includes a first encapsulation layer, and the first encapsulation layer is disposed on a light emitting surface of the light emitting layer of the display panel;

[0016] At least part of the first connecting member is located between the first encapsulation layers of two adjacent display panels and bonds the two adjacent first encapsulation layers;

[0017] Preferably, the first encapsulation layer comprises at least one of an epoxy adhesive layer, an acrylic adhesive layer and a silicone resin layer; and / or the refractive index of the first encapsulation layer is in the range of 1.4-1.6.

[0018] In some embodiments, the first connector is disposed on a side of the base layer away from the driving circuit layer, the base layer has a connecting hole, and the connecting hole penetrates the base layer along the thickness direction of the base layer; a third connector is disposed in the connecting hole, one end of the third connector is electrically connected to the first connector, and the other end of the third connector is electrically connected to the driving circuit layer;

[0019] The driving circuit layer is connected to the electrical connection layer through the third connection member and the first connection member.

[0020] In some embodiments, a plurality of second encapsulation layers are further included, one of the second encapsulation layers is correspondingly disposed on a light emitting surface of the light emitting layer of the display panel; two adjacent second encapsulation layers are abutted;

[0021] Preferably, the second encapsulation layer includes at least one of an epoxy adhesive layer, an acrylic adhesive layer and a silicone resin layer.

[0022] In some embodiments, the first connecting member includes a first connecting portion and a second connecting portion connected to each other; the two adjacent display panels include a first display panel and a second display panel, the surface of the base layer of the first display panel away from the driving circuit layer has a first area close to the second display panel, and the surface of the base layer of the second display panel away from the driving circuit layer has a second area close to the first display panel;

[0023] The first connection portion is located in the first area, and the electrical connection layer of the first display panel is electrically connected to an end of the first connection member facing away from the second display panel;

[0024] The second connection portion is located in the second area, and the electrical connection layer of the second display panel is electrically connected to an end of the second connection portion facing away from the first display panel.

[0025] In some embodiments, a protective layer is further included, and the protective layer covers a side of the first connecting member facing away from the base layer;

[0026] Preferably, the material of the protective layer includes silicone resin and / or epoxy resin.

[0027] In some embodiments, a flexible connection member is further included, and when the external circuit board is electrically connected to the electrical connection layer of any one of the display panels, the external circuit board is connected to the electrical connection layer of any one of the display panels through the flexible connection member;

[0028] Preferably, the material of the first connecting member includes at least one of silver, aluminum, nickel, chromium and copper.

[0029] In the display device provided by the present application, multiple display panels are distributed in an array, and multiple display panels can display pictures, so that the display area of ​​the display device is larger. The first connector is electrically connected to the electrical connection layers of the multiple display panels, so that the first connector can be electrically connected to the multiple display panels. The external circuit board is electrically connected to the first connector or the electrical connection layer of any one of the display panels, so that the external circuit board can be electrically connected to the multiple display panels, so that the external circuit board can input electrical signals to the multiple display panels, so that the multiple display panels can display pictures, thereby reducing the number of electrical connection structures between the external circuit board and the display panel, so that the number of components of the display device of the present application is smaller, so that the complexity of the manufacturing process of the display device is reduced, and the manufacturing cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] Figure 1 A schematic diagram of a display device according to an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the connection between an external circuit board and a first connecting member of a display device according to an embodiment of the present application;

[0033] Figure 3A schematic diagram of a display panel of a display device according to an embodiment of the present application;

[0034] Figure 4 A schematic diagram of an electrical connection layer of a display device according to an embodiment of the present application being stacked on one side of a first display panel;

[0035] Figure 5 A three-dimensional diagram of a schematic diagram of an electrical connection layer of a display device according to an embodiment of the present application being stacked on the other side of a display panel;

[0036] Figure 6 A schematic diagram of a first connecting portion and a second connecting portion of a display device according to an embodiment of the present application;

[0037] Figure 7 A schematic diagram of another display device according to an embodiment of the present application;

[0038] Figure 8 A schematic diagram of a plurality of display panels of a display device according to an embodiment of the present application arranged along a first direction;

[0039] Fig. 9 A schematic diagram of a display device according to an embodiment of the present application in which a plurality of display panels are arranged both along a first direction and along a second direction;

[0040] Fig.10 A schematic diagram of connecting any display panel of a display device according to an embodiment of the present application with a flexible connector;

[0041] Fig.11 A flow chart of a method for preparing a display device according to an embodiment of the present application;

[0042] Fig.12 The present invention is a flow chart of another method for preparing a display device according to an embodiment of the present application.

[0043] Reference numerals:

[0044] 100-display panel, 110-base layer, 111-connection hole, 112-first area, 113-second area, 114-backlight surface, 120-electrical connection layer, 130-driving circuit layer, 140-light emitting layer, 141-light emitting surface, 150-first encapsulation layer, 160-second encapsulation layer,

[0045] 200-first connecting member, 210-first connecting portion, 220-second connecting portion,

[0046] 300-External circuit board,

[0047] 400- second connecting piece,

[0048] 500-protection layer,

[0049] 600-flexible connector, 610-chip-on-film, 620-flexible circuit board,

[0050] 700-the third connecting piece. DETAILED DESCRIPTION

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] In order to meet the application needs of large-size display screens in current commercial display, vehicle-mounted display and other fields, major panel manufacturers use multiple small-size spliced ​​display panels to achieve large-size display screens.

[0058] At present, in a spliced ​​display device, each small-sized splicing unit is independently driven through a circuit, which results in a complex circuit of the spliced ​​display device and a large number of connecting components, thereby causing a complex manufacturing process of the spliced ​​display device and high cost.

[0059] In addition, there is inevitably a wire arrangement area at the edge of the splicing unit, making it difficult to achieve a seamless display effect for the human eye. To solve this problem, technicians proposed a side wiring technology to input the drive signal on the back of the panel, but this technology has problems such as difficulty in preparation, complex process, and difficult maintenance.

[0060] In the display device proposed in the present application, there are multiple display panels, and multiple display panels can display images. The first connector is electrically connected to the electrical connection layers of multiple display panels, so that the first connector can be electrically connected to multiple display panels. The external circuit board is electrically connected to the first connector or the electrical connection layer of any one of the display panels, so that the external circuit board can be electrically connected to multiple display panels, so that the external circuit board can input electrical signals to multiple display panels, so that multiple display panels can display images, thereby reducing the number of electrical connection structures between the external circuit board and the display panel, so that the number of components of the display device of the present application is smaller, so that the complexity of the manufacturing process of the display device is reduced, and the manufacturing cost is lower.

[0061] The display device provided in the present application is described in detail below in conjunction with specific embodiments.

[0062] The present application embodiment provides a display device, referring to Figure 1 , Figure 3 As shown, it includes a display panel 100, a first connector 200 and an external circuit board 300, and the number of display panels 100 is multiple. The multiple display panels 100 are arranged in an array, and each display panel 100 includes a base layer 110, a driving circuit layer 130 and a light-emitting layer 140 stacked in sequence. The side of the base layer 110 away from the driving circuit layer 130 is provided with an electrical connection layer 120, and the electrical connection layer 120 is electrically connected to the driving circuit layer 130. The first connector 200 is provided on the display panel 100, and the first connector 200 is electrically connected to the electrical connection layers 120 of two adjacent display panels 100. The external circuit board 300 is electrically connected to the first connector 200 or the electrical connection layer 120 of any display panel 100.

[0063] The display device may be a Mini-LED (micro light emitting diode display) display device and a Micro-LED (micro light emitting diode display) display device. The display device may be applied to electronic devices, and the electronic devices may 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 may also be non-mobile devices such as personal computers (PCs), televisions (TVs), ATMs, or self-service machines. Therefore, the present application embodiment may also provide an electronic device, which includes the display device described above.

[0064] Among them, each display panel 100 in the multiple display panels 100 can display a picture, and the multiple display panels 100 can be arranged in an array along a thickness direction perpendicular to the display panel 100. Specifically, the multiple display panels 100 can be arranged along a first direction, that is, the X direction, and the multiple display panels 100 can also be arranged along a second direction, that is, the Y direction, and the second direction is perpendicular to the first direction. The multiple display panels 100 can also be arranged along both the first direction and the second direction, so that the multiple display panels 100 of the display device of the present application can be spliced. Multiple display panels 100 arranged in an array can display pictures synchronously to form a display device with a larger size. By setting the number of display panels 100, the size and specifications of the display device of the present application can be changed. The specific number and arrangement of the display panels 100 are not limited by the present application. Specifically, if the display panel 100 of the present application itself is a special-shaped structure, such as when the edge of the display panel 100 is a circular arc structure, the multiple display panels 100 can also be arranged in a circular array at a certain center point.

[0065] In the multiple display panels 100, an electrical connection layer 120 is provided on the side of the base layer 110 facing away from the driving circuit layer 130. The electrical connection layer 120 is an electrical connection structure for the display panel 100 to be connected to an external circuit. The first connector 200 is also an electrical connection structure. The first connector 200 is provided on the display panel 100 so that the first connector 200 can be fixed. The first connector 200 is electrically connected to the electrical connection layers 120 of two adjacent display panels 100. In this way, when the display device of the present application includes multiple groups of adjacent display panels 100, the multiple display panels 100 can be electrically connected through the first connector.

[0066] In the display panel 100 of the present application, the base layer 110, the driving circuit layer 130 and the light-emitting layer 140 are stacked in sequence. Among them, the base layer 110 is the basic component of the display panel 100, and the base layer 110 can provide an installation basis for at least part of the other components of the display panel 100. When the display device 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 device of the present application is a flexible display device, the base layer 110 can specifically be prepared with a polyimide material. The present application does not limit the specific material of the base layer 110. The driving circuit layer 130 can be stacked on the base layer 110, and the driving circuit layer 130 can specifically be set as a TFT driving circuit, that is, a thin film transistor driving circuit. Of course, the driving circuit layer 130 can also be other circuit structures, which are not limited by the present application. The light-emitting layer 140 is stacked on the side of the driving circuit layer 130 facing away from the base layer 110, and the light-emitting layer 140 is also electrically connected to the driving circuit layer 130. The light-emitting surface 141 of the display panel 100 is located on the light-emitting layer 140 and is located on the side of the light-emitting layer 140 facing away from the driving circuit layer 130, so that the display device of the present application is a top-emitting structure. The display panel 100 also has a backlight surface 114 opposite to the light-emitting surface 141. Correspondingly, the backlight surface 114 is located on the side of the base layer 110 facing away from the driving circuit layer 130. The first connecting member 200 is also electrically connected to the driving circuit layer 130, so the electrical connection layer 120 can be electrically connected to the driving circuit layer 130 through the first connecting member 200.

[0067] The external circuit board 300 is the processing core of the display device. The external circuit board 300 is electrically connected to the multiple display panels 100. The external circuit board 300 can drive the multiple display panels 100 to emit light. Specifically, the external circuit board 300 can transmit electrical signals and provide electrical energy to the multiple display panels 100, so that the external circuit board 300 can drive the multiple display panels 100 to emit light synchronously or individually. This application does not limit this. The external circuit board 300 can be electrically connected to the first connector 200 or the electrical connection layer 120 of any display panel 100. For specific reference Figure 2 As shown, when the external circuit board 300 is electrically connected to the first connecting member 200, since the first connecting member 200 is also electrically connected to the electrical connection layer 120 of the multiple display panels 100, the external circuit board 300 electrically connected to the first connecting member 200 can be electrically connected to the electrical connection layer 120 of the multiple display panels 100 through the first connecting member 200, so that the external circuit board 300 can provide electrical energy to the multiple display panels 100 and transmit electrical signals, so that the multiple display panels 100 can all display images.

[0068] Specific reference Figure 1As shown, when the external circuit board 300 is electrically connected to the electrical connection layer 120 of any display panel 100, the electrical connection layer 120 of any display panel 100 is electrically connected to the electrical connection layer 120 of other display panels 100 through the first connecting member 200. Therefore, the external circuit board 300 can be electrically connected to the electrical connection layer 120 of other display panels 100 through the first connecting member 200. In this way, the external circuit board 300 can also provide electrical energy to multiple display panels 100 and transmit electrical signals so that multiple display panels 100 can all emit light.

[0069] By connecting the external circuit board 300 to the first connector 200 or the electrical connection layer 120 of any display panel 100, the external circuit board 300 can be electrically connected to multiple display panels 100 through one electrical connection structure, so that the external circuit board 300 can drive multiple display panels 100 to display images. In this way, the number of lines between the external circuit board 300 and the display panel 100 can be reduced, so that the connection structure of the display device of the present application is more concise, the number of components is reduced, and finally the manufacturing process of the display device is relatively simple and the manufacturing cost is lower.

[0070] Next, the structure and connection method of the first connecting member 200 in the present application are described in detail.

[0071] As a first achievable implementation method, refer to Figure 1-Figure 6 As shown, the first connector 200 is disposed on the side of the base layer 110 away from the driving circuit layer 130, and the base layer 110 has a connecting hole 111, and the connecting hole 111 penetrates the base layer 110 along the thickness direction of the base layer 110. A third connector 700 is disposed in the connecting hole 111, one end of the third connector 700 is electrically connected to the first connector 200, and the other end of the third connector 700 is electrically connected to the driving circuit layer 130. The driving circuit layer 130 is connected to the electrical connection layer 120 through the third connector 700 and the first connector 200.

[0072] Both the first connection member 200 and the electrical connection layer 120 can be arranged on the backlight surface 114 of the display panel 100, that is, arranged on the side of the base layer 110 facing away from the driving circuit layer 130, so that the first connection member 200 and the electrical connection layer 120 will not block the light-emitting surface 141 of the display panel 100, so that the display effect of the display panel 100 is not affected, thereby making the display effect of the display device of the present application better. In addition, this can make the structure of the display device more compact.

[0073] The base layer 110 may be provided with a connection hole 111 that passes through the base layer 110 along the thickness direction of the base layer 110, and the third connection member 700 may be disposed in the connection hole 111. Specifically, when the first connection member 200 is directly electrically connected to the driving circuit layer 130 of the display panel 100 in the present application, the connection hole 111 may be disposed opposite to the second region 113 of the base layer 110, so that one end of the connection hole 111 is opposite to the first connection member 200, and the other end of the connection hole 111 is opposite to the driving circuit layer 130, and the two ends of the third connection member 700 may be connected to the first connection member 200 and the driving circuit layer 130, respectively.

[0074] By providing the connection hole 111, when the driving circuit layer 130 is connected to the first connecting member 200, its connection structure can directly penetrate the base layer 110 to connect the driving circuit layer 130 to the first connecting member 200. In this way, the third connecting member 700 does not need to be arranged around the side of the base layer 110, thereby reducing the number of wiring on the side of the base layer 110, or directly eliminating the side wiring structure, so that the side structure of the display device can be relatively simpler and more compact. In this way, when the sides of adjacent display panels 100 are butt-jointed, the splicing gap between the two display panels 100 is relatively smaller, so that the display device can have a better splicing display effect.

[0075] In some embodiments, reference Figure 1 , Figure 4 and Figure 5 As shown, the first connecting member 200 includes a first connecting portion 210 and a second connecting portion 220 connected to each other; two adjacent display panels 100 include a first display panel and a second display panel, the surface of the base layer 110 of the first display panel away from the driving circuit layer 130 has a first area 112 close to the second display panel, and the surface of the base layer 110 of the second display panel away from the driving circuit layer 130 has a second area 113 close to the first display panel. The first connecting portion 210 is located in the first area 112, and the electrical connecting layer 120 of the first display panel is electrically connected to one end of the first connecting portion 210 away from the second display panel 100. The second connecting portion 220 is located in the second area 113, and the electrical connecting layer 120 of the second display panel is electrically connected to one end of the second connecting portion 220 away from the first display panel.

[0076] The backlight surface 114 of the first display panel may include a first area 112, and the backlight surface 114 of the second display panel may include a second area 113, wherein the first area 112 is a portion of the first display panel adjacent to the second display panel, and the second area 113 is a portion of the second display panel adjacent to the first display panel. The first connecting portion 210 and the second connecting portion 220 in the first connecting member 200 are respectively arranged in the first area 112 and the second area 113, so that a portion of the first connecting member 200 is located on the first display panel and a portion is located on the second display panel. In this way, the first connecting member 200 can be prevented from being concentrated on a certain display panel 100, so that the first area 112 of the backlight surface 114 of two adjacent display panels 100 has enough space for setting the electrical connection layer 120, and the first connecting member 200 is prevented from being completely arranged on the backlight surface 114 of a certain display panel 100, resulting in too small space in the first area 112 of the backlight surface 114 of the display panel 100 for setting the electrical connection layer 120. Therefore, the size of the electrical connection layer 120 set on the backlight surface 114 of the two display panels 100 in each adjacent group can be set to be the same, so that the specifications and sizes of the multiple display panels 100 of the present application are relatively consistent. The multiple display panels 100 can be prepared by the same set of processes to reduce the cost, process difficulty and preparation cost of the display device of the present application, which is conducive to the large-scale preparation of the display panels 100.

[0077] In some embodiments, reference Figure 3 As shown, the display panel 100 of the present application further includes a plurality of second encapsulation layers 160 , one second encapsulation layer 160 is correspondingly disposed on the light emitting surface 141 of the light emitting layer 140 of one display panel 100 , and two adjacent second encapsulation layers 160 are abutted against each other.

[0078] The second encapsulation layer 160 can be disposed on the light emitting surface 141 of the light emitting layer 140, that is, the second encapsulation layer 160 is stacked on the side of the light emitting layer 140 facing away from the driving circuit layer 130. The second encapsulation layer 160 covers the light emitting layer 140 to protect and encapsulate the light emitting layer 140. The abutment of two adjacent second encapsulation layers 160 can effectively improve the splicing effect of multiple display panels 100 in the display device.

[0079] The second encapsulation layer 160 may include at least one of an epoxy adhesive layer, an acrylic adhesive layer and a silicone resin layer, and the refractive index range of the second encapsulation layer 160 is 1.4-1.6, so as to reduce the influence of the second encapsulation layer 160 on the display effect of the display panel 100, thereby making the display effect of the display panel 100 of the present application better.

[0080] As a second achievable implementation, the display panel 100 further includes a second connector 400, which is disposed on the side wall of the base layer 110, one end of the second connector 400 is electrically connected to the electrical connection layer 120, the other end of the second connector 400 is electrically connected to the driving circuit layer 130, and the second connector 400 is also electrically connected to the first connector 200. The first connector 200 connects the electrical connection layers 120 of two adjacent display panels 100 through the second connectors 400 of the two adjacent display panels 100.

[0081] It should be noted that the reference Figure 7 As shown, the second connector 400 is disposed on the side wall of the base layer 110, and one end of the second connector 400 is electrically connected to the electrical connection layer 120, and the other end of the second connector 400 is electrically connected to the driving circuit layer 130, so that the electrical connection layer 120 can be electrically connected to the driving circuit layer 130 through the second connector 400, and the second connector 400 is also fixed to the display panel 100. The second connector 400 is also electrically connected to the first connector 200. Specifically, the number of the second connectors 400 is equal to the number of the display panels 100, and the second connectors 400 corresponding to two adjacent display panels 100 can be connected to the first connector 200, so that the two adjacent display panels 100 can also be electrically connected to each other. In addition, it should be understood that the second connectors 400 disposed on two adjacent display panels 100 are also disposed adjacently.

[0082] In some embodiments, the first connection member 200 is located between two adjacent display panels 100 and bonds the two adjacent display panels 100 , and the second connection members 400 of the two adjacent display panels 100 are electrically connected through the first connection member 200 .

[0083] The first connector 200 may be disposed between two adjacent display panels 100, specifically between the side walls of the substrate layer 110 of the two adjacent display panels 100, and the first connector 200 may also be bonded to the two adjacent display panels 100, so that the two display panels 100 can be relatively fixed, so that the structure of the display device of the present application is more stable. Specifically, the first connector 200 may be located between adjacent second connectors 400, and the two adjacent second connectors 400 may be electrically connected to the opposite sides of the first connector 200 by bonding, so that the first connector 200 can be fixedly connected to the two adjacent second connectors 400, and the first connector 200 can be electrically connected to the two adjacent second connectors 400.

[0084] In some embodiments, the first connecting member 200 is an anisotropic conductive adhesive containing conductive particles.

[0085] In this way, the first connector 200 can be bonded and electrically connected to two adjacent second connectors 400. By doping the anisotropic conductive adhesive with conductive particles, the anisotropic conductive adhesive can have better conductive properties, thereby making the electrical connection between the first connector 200 and the second connector 400 more stable and reliable. The anisotropic conductive adhesive includes a thermosetting epoxy resin adhesive, and the conductive particles can be gold-plated or nickel-plated resin particles, or a mixture of gold-plated and nickel-plated resin particles.

[0086] It should be understood that when the first connector 200 of the present application is located between the side walls of two adjacent display panels 100, the first connector 200 will increase the distance between the two adjacent display panels 100, and the first connector 200 will form a splicing gap between the two adjacent display panels 100. In order to make the overall display effect of the display device of the present application more consistent and with higher contrast in the case of ink display, the first connector 200 can also be doped with black pigment, so that the first connector 200 can be displayed in black as a whole, so that when the two adjacent display panels 100 are closed and in the ink display state, the color of the first connector 200 is close to the color of the light emitting surface 141 of the display panel 100, so that the ink display effect of the display device of the present application is more consistent. The refractive index range of the conductive particles is 1.5-1.7, which can reduce the influence of the conductive particles on the ink display effect of the first connector 200.

[0087] In some embodiments, reference Figure 7 As shown, the display panel 100 also includes a first encapsulation layer 150, which is arranged on the light emitting surface 141 of the light emitting layer 140 of the display panel 100; at least part of the first connecting member 200 is located between the first encapsulation layers 150 of two adjacent display panels 100 and bonds the two adjacent first encapsulation layers 150.

[0088] It should be noted that the first encapsulation layer 150 can be arranged on the light emitting surface 141 of the light emitting layer 140, that is, the first encapsulation layer 150 is stacked on the side of the light emitting layer 140 that is away from the driving circuit layer 130. The first encapsulation layer 150 covers the light emitting layer 140 to protect and encapsulate the light emitting layer 140. The first encapsulation layer 150 can be made of at least one of an epoxy adhesive layer, an acrylic adhesive layer, and a silicone resin layer, and the refractive index of the first encapsulation layer 150 is in the range of 1.4-1.6, so as to reduce the influence of the first encapsulation layer 150 on the display effect of the display panel 100, thereby making the display effect of the display panel 100 of the present application better. The first connecting member 200 can also be located between the first packaging layers 150 of two adjacent display panels 100. When the first connecting member 200 is an anisotropic conductive adhesive, the opposite sides of the first connecting member 200 can also be bonded to the first packaging layers 150 of the two adjacent display panels 100, so that the first connecting member 200 and the first packaging layer 150 can also be fixedly connected, thereby making the connection effect between the first connecting member 200 and the display panel 100 more stable and reliable.

[0089] In some implementations, in order to make the display device of the present application have a better display effect, reference Figure 8-Figure 10 As shown, a plurality of display panels 100 may be arranged adjacent to each other in sequence along a first direction or a second direction. Specifically, relatively close edges of two adjacent display panels 100 may be butt-jointed, so that a gap between the relative edges of two adjacent display panels 100 is smaller, thereby making the area of ​​the region where no image is displayed between the adjacent display panels 100 when the display device of the application displays an image smaller, so that the display panels 100 have a better display effect.

[0090] The electrical connection layers 120 of two adjacent display panels 100 can be electrically connected through at least one first connector 200, thereby ensuring that the electrical connection effect between each group of adjacent display panels 100 is reliable and stable. Figure 1 and Figure 5As shown, two adjacent display panels 100 may constitute an adjacent group. When the number of display panels 100 is two, the number of adjacent groups is one, the number of first connectors 200 may be set to at least one, and at least one first connector 200 is electrically connected to the electrical connection layers 120 of the two display panels 100. When the number of display panels 100 is three, the three display panels 100 may be arranged in sequence along the first direction, or with one display panel 100 as the center, one of the other two display panels 100 is distributed in the first direction with the center display panel 100, and the other of the other two display panels 100 is distributed in the second direction with the center display panel 100. In this case, the number of adjacent groups is two, the number of first connectors 200 is at least two, and the two first connectors 200 may be connected to the adjacent display panels 100 in the two adjacent groups, respectively.

[0091] When the number of display panels 100 is four and the four display panels 100 are distributed along the first direction or the second direction, the number of adjacent groups is three, the number of first connectors 200 is at least three, and the three first connectors 200 can be connected to adjacent display panels 100 in three adjacent groups, respectively. Figure 6 As shown, when four display panels 100 are arranged along both the first direction and the second direction, and the number of display panels 100 in the first direction and the second direction is two, the number of adjacent groups is four. At this time, the number of first connectors 200 is at least four, and the four first connectors 200 can be respectively connected to the adjacent display panels 100 in the four adjacent groups. Of course, two adjacent display panels 100 in an adjacent group can also be electrically connected through multiple first connectors 200, so that the electrical connection effect between two adjacent display panels 100 is more stable and reliable.

[0092] By electrically connecting two adjacent display panels 100 in adjacent groups through an independent first connector 200, the electrical connection effect of the two adjacent display panels 100 can be made stable and reliable, while also avoiding the problem of the first connector 200 being too large due to the connection of non-adjacent display panels 100 through the first connector 200.

[0093] In some embodiments, reference Figure 8 and Fig. 9 As shown, the display panel further includes a protective layer 500, and the protective layer 500 covers the side of the first connecting member 200 away from the base layer 110. The material of the protective layer 500 includes silicone resin and / or epoxy resin.

[0094] It should be noted that the protective layer 500 can be provided to cover the first connector 200. Specifically, the protective layer 500 covers the side of the first connector 200 facing away from the display panel 100, so that the first connector 200 is located in the protective layer 500, and the protective layer 500 can isolate the first connector 200 from the outside to prevent the first connector 200 from being oxidized or worn. The protective layer 500 can be made of silicone resin or epoxy resin material. Specifically, the hot-melt silicone resin or epoxy resin can be coated on the first connector 200. After the hot-melt silicone resin or epoxy resin is cooled, the protective layer 500 can cover the first connector 200 as a whole to protect the first connector 200. Accordingly, the first connector 200 of the present application can be made of silver, aluminum, nickel, chromium or copper, and a mixture of the above materials, so that the first connector 200 also has high temperature resistance. When the protective layer 500 is coated on the first connector 200, the first connector 200 can be prevented from being damaged. In addition, the protection layer 500 may also be disposed to cover the electrical connection layer 120 . Specifically, the protection layer 500 covers the side of the electrical connection layer 120 facing away from the base layer 110 .

[0095] When the display device of the present application is provided with a second connector 400 and the first connector 200 is arranged between adjacent display panels 100, the protective layer 500 can cover the side of the first connector 200 and the second connector 400 adjacent to the electrical connection layer 120 to protect the first connector 200 and the second connector 400.

[0096] In some embodiments, reference Figure 1 As shown, the external circuit board 300 in the present application can be specifically connected to the electrical connection layer 120 of any display panel 100, so that the external circuit board 300 can be connected to the electrical connection layers 120 of all display panels 100 through the first connector 200. It should be understood that in the related art, in the display device without the first connector 200, the external circuit board 300 is connected to the electrical connection layers 120 of multiple display panels 100, and the first connector 200 in the present application mainly serves to electrically connect the electrical connection layers 120 of two adjacent display panels 100, so the conductive structure of the first connector 200 can be relatively simple, and the external circuit board 300 is connected to the electrical connection layer 120, which can make the applicability of the display panel 100 of the present application better.

[0097] In some embodiments, reference Figure 1 , Figure 2 and Fig.10As shown, the display device of the present application may also be provided with a flexible connection member 600. When the external circuit board 300 is electrically connected to the electrical connection layer 120 of any display panel 100, the external circuit board 300 is connected to the electrical connection layer 120 of any display panel 100 through the flexible connection member 600. The material of the first connection member 300 includes at least one of silver, aluminum, nickel, chromium and copper.

[0098] It should be noted that the flexible connector 600 is a flexible electrical connector, so the flexible connector 600 can be driven to deform. One end of the flexible connector 600 is electrically connected to the external circuit board 300, and the other end of the flexible connector 600 is electrically connected to the electrical connection layer 120 of any display panel 100. Since the flexible connector 600 can be driven to deform, the flexible connector 600 can be deformed according to the relative position of the external circuit board 300 and the display panel 100, so as to make the structure of the display device of the present application more compact.

[0099] The flexible connector 600 may specifically include a COF 610 (COF) and a flexible circuit board 620 (FPC), one end of the flexible circuit board is connected to the external circuit board 300, and the other end of the flexible circuit board 620 is connected to the COF 610, and the COF 610 is electrically connected to the electrical connection layer 120 of the display panel 100 through a binding process. Therefore, by providing the first connector 200, the number of flexible connectors 600 of the display device of the present application can also be reduced, thereby greatly reducing the difficulty and cost of the manufacturing process of the display device. The material of the first connector 300 includes at least one of silver, aluminum, nickel, chromium and copper, so that the first connector 300 has good electrical conductivity.

[0100] The present application also provides a method for manufacturing a display device, which is used to manufacture the display device having the connection hole 111 and the connection hole 111 provided with a third connection member 700, referring to Fig.11 As shown, the method includes:

[0101] S100, opening a connection hole on the base layer; Figure 1 and Figure 3 As shown, two ends of the connection hole 111 opened on the base layer 110 may be opposite to the driving circuit layer 130 and the first connection member 200 respectively.

[0102] S200, stacking a first connecting member on a side of the base layer facing away from the driving circuit layer; Figure 1 As shown, the first connecting member 200 is opposite to the end of the connecting hole 111 .

[0103] S300, providing a second connection portion penetrating the connection hole, and electrically connecting the second connection portion to the first connection member and the driving circuit layer; Figure 1As shown, the third connection member 700 electrically connects the first connection member 200 and the driving circuit layer 130 .

[0104] S400, providing a protective layer, wherein the protective layer covers a side of the first connecting member facing away from the base layer; Figure 7 and Figure 8 As shown, the protection layer 500 covers the first connecting member 200 therein.

[0105] S500, electrically connecting the first connection member or the electrical connection layer of any display panel to an external circuit board. Figure 1 As shown, the external circuit board 300 is connected to the electrical connection layer 120 of one of the display panels 100 .

[0106] The present application also provides another method for preparing a display device, which is used to prepare the display device 100 having the second connecting member 400 and the second connecting member 400 disposed on the side wall of the base layer 110, referring to Figure 7 and Fig.12 As shown, the method includes:

[0107] S110, providing a plurality of display panels, wherein the plurality of display panels are arranged in an array, and forming a second connecting member on a side wall of a base layer of the display panel.

[0108] S210, forming a first connecting member between two adjacent display panels.

[0109] S310, electrically connecting a first connecting member or an electrical connection layer of any display panel to an external circuit board.

[0110] The display panels 100 in the present application are all independent structural components. Therefore, after the display panels 100 are prepared, the electrical connection layers 120 of multiple display panels 100 can be electrically connected through the first connecting member 200. This makes the preparation method of the display device of the present application more flexible and less restricted.

[0111] 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 device, characterized in that: include: A plurality of display panels, wherein the plurality of display panels are arranged in an array, each of the display panels comprises a base layer, a driving circuit layer and a light-emitting layer which are stacked in sequence, an electrical connection layer is arranged on a side of the base layer away from the driving circuit layer, and the electrical connection layer is electrically connected to the driving circuit layer; a first connecting member, the first connecting member being disposed on the display panel, and the first connecting member electrically connecting the electrical connection layers of two adjacent display panels; An external circuit board is electrically connected to the first connecting member or the electrical connection layer of any one of the display panels.

2. The display device according to claim 1, characterized in that The display panel further includes a second connecting member, which is disposed on a side wall of the base layer, one end of the second connecting member is electrically connected to the electrical connection layer, the other end of the second connecting member is electrically connected to the driving circuit layer, and the second connecting member is also electrically connected to the first connecting member; The first connecting member connects the electrical connection layers of the two adjacent display panels through the second connecting members of the two adjacent display panels.

3. The display device according to claim 2, characterized in that The first connecting member is located between two adjacent display panels and bonds the two adjacent display panels; The second connecting members of two adjacent display panels are electrically connected through the first connecting member.

4. The display device according to claim 3, characterized in that The first connecting member is an anisotropic conductive adhesive containing conductive particles; Preferably, the anisotropic conductive adhesive comprises thermosetting epoxy resin adhesive; and / or the conductive particles comprise gold-plated and / or nickel-plated resin particles; and / or the first connector is doped with black pigment; and / or the refractive index of the conductive particles is in the range of 1.5-1.

7.

5. The display device according to claim 3, characterized in that: The display panel further comprises a first encapsulation layer, wherein the first encapsulation layer is arranged on a light emitting surface of the light emitting layer of the display panel; At least part of the first connecting member is located between the first encapsulation layers of two adjacent display panels and bonds the two adjacent first encapsulation layers; Preferably, the first encapsulation layer comprises at least one of an epoxy adhesive layer, an acrylic adhesive layer and a silicone resin layer; and / or the refractive index of the first encapsulation layer is in the range of 1.4-1.

6.

6. The display device according to claim 1, characterized in that The first connecting member is arranged on a side of the base layer away from the driving circuit layer, the base layer has a connecting hole, and the connecting hole penetrates the base layer along the thickness direction of the base layer; a third connecting member is arranged in the connecting hole, one end of the third connecting member is electrically connected to the first connecting member, and the other end of the third connecting member is electrically connected to the driving circuit layer; The driving circuit layer is connected to the electrical connection layer through the third connection member and the first connection member.

7. The display device according to claim 6, characterized in that It also includes a plurality of second encapsulation layers, one of the second encapsulation layers is correspondingly arranged on a light emitting surface of the light emitting layer of the display panel; two adjacent second encapsulation layers are abutted; Preferably, the second encapsulation layer includes at least one of an epoxy adhesive layer, an acrylic adhesive layer and a silicone resin layer.

8. The display device according to claim 7, characterized in that: The first connecting member includes a first connecting portion and a second connecting portion connected to each other; the two adjacent display panels include a first display panel and a second display panel, the surface of the base layer of the first display panel away from the driving circuit layer has a first area close to the second display panel, and the surface of the base layer of the second display panel away from the driving circuit layer has a second area close to the first display panel; The first connection portion is located in the first area, and the electrical connection layer of the first display panel is electrically connected to an end of the first connection member facing away from the second display panel; The second connection portion is located in the second area, and the electrical connection layer of the second display panel is electrically connected to an end of the second connection portion facing away from the first display panel.

9. The display device according to any one of claims 1 to 7, characterized in that: It also includes a protective layer, the protective layer covers a side of the first connecting member away from the base layer; Preferably, the material of the protective layer includes silicone resin and / or epoxy resin.

10. The display device according to any one of claims 1 to 7, characterized in that: Also comprising a flexible connection member, when the external circuit board is electrically connected to the electrical connection layer of any one of the display panels, the external circuit board is connected to the electrical connection layer of any one of the display panels through the flexible connection member; Preferably, the material of the first connecting member includes at least one of silver, aluminum, nickel, chromium and copper.

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