Display screen, display screen manufacturing method and spliced ​​screen

Abstract

The display screen, display screen manufacturing method, and spliced ​​screen provided in embodiments of the present application include a first surface, a second surface opposite the first surface, and a side surface connecting the first and second surfaces; the first and second surfaces are each provided with a plurality of bonding contacts spaced apart along a first direction; the display screen also includes a plurality of connecting lines extending in parallel from the first surface to the second surface; a first spacing between two adjacent bonding contacts on the same surface is greater than a first width of the connecting line, and a second spacing between the endpoints of two adjacent connecting lines on the same surface is less than the second width of any bonding contact along the first direction. This ensures that each bonding contact can contact at least one connecting line without requiring precise alignment, and adjacent bonding contacts on the same surface will not be short-circuited by the connecting lines, thereby reducing the need for precise alignment of the side trace bonding and effectively improving the efficiency of the bonding process and product yield.

Description

Technical Field

[0001] The present application relates to the field of display device manufacturing, and more specifically, to a display screen, a display screen manufacturing method, and a spliced ​​screen. Background Art

[0002] A spliced ​​screen is a technology that stitches together multiple smaller displays in an array to create a larger display area. To ensure display quality and reduce display breakage at the joints between displays, the edges of each display must be as small as possible. Therefore, a side wiring process is required to electrically connect the bonding contacts on one side of the display surface to the bonding contacts of the back drive circuit. In some side wiring processes, multiple flexible bonding wires are pre-prepared and attached to the display surface and back of the display, respectively, so that each bonding wire connects to a pair of bonding contacts on the display surface and back. However, this method requires precise overlap between the bonding wires and the bonding contacts, requiring extremely high alignment accuracy, extremely high equipment requirements, and extremely low production yield, making it difficult to achieve mass production. Summary of the Invention

[0003] In order to overcome the technical problems mentioned in the above technical background, an embodiment of the present application provides a display screen, comprising:

[0004] a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface;

[0005] The first surface and the second surface are respectively provided with a plurality of bonding contacts arranged at intervals along a first direction; the arrangement spacing of the plurality of bonding contacts on the first surface is the same as the arrangement spacing of the plurality of bonding contacts on the second surface;

[0006] The display screen further includes a bonding structure extending from the first surface through one of the side surfaces to the second surface, the bonding structure including a plurality of connecting lines extending in parallel from the first surface to the second surface;

[0007] The first spacing between two adjacent bonding contacts located on the same surface is greater than the first width of the connecting line, the second spacing between the endpoints of two adjacent bonding lines located on the same surface is less than the second width of any one of the bonding contacts along the first direction, and at least some of the multiple bonding lines connect a bonding contact on the first surface and a bonding contact on the second surface.

[0008] In a possible implementation, the first width is smaller than the second width;

[0009] Preferably, the first width is 1 / 10 to 1 / 5 of the second width.

[0010] In a possible implementation, the first width is 1 micron to 5 microns, and the second spacing is 1 micron to 5 microns;

[0011] Preferably, the first width is equal to the second distance.

[0012] In a possible implementation, one end of at least a portion of the connecting wires is located between two adjacent bonding contacts on the first surface, and the other end is located between two adjacent bonding contacts on the second surface.

[0013] In a possible implementation, the plurality of bonding contacts on the first side and the plurality of bonding contacts on the second side are mirror-symmetrical.

[0014] In a possible implementation, the bonding structure includes a base layer and a protective layer, the plurality of connection lines are arranged on the base layer, and the protective layer covers a side of the connection lines away from the base layer.

[0015] In a possible implementation, the base layer and the protective layer are made of a flexible insulating material, and the connecting wire is made of a flexible conductive material.

[0016] In a possible implementation, at least one of the base layer and the protective layer exposes two ends of the plurality of connection lines, and at least some of the connection lines are electrically contacted with the binding contacts of the first surface and the second surface respectively through the exposed two ends.

[0017] Another object of the present application is to provide a method for manufacturing a display screen, the method comprising:

[0018] A display panel is provided, comprising a first surface, a second surface opposite the display surface, and a side surface connecting the first surface and the second surface; the first surface and the second surface are each provided with a plurality of bonding contacts arranged at intervals along a first direction; the arrangement spacing of the plurality of bonding contacts on the first surface is the same as the arrangement spacing of the plurality of bonding contacts on the second surface;

[0019] A bonding structure is provided, the bonding structure comprising a plurality of parallel connecting lines, wherein a first spacing between two adjacent bonding contacts on the same surface is greater than a first width of the connecting line, and a second spacing between endpoints on the same side of two adjacent bonding lines is less than a second width of any one bonding contact along the first direction;

[0020] Two ends of the bonding structure are respectively arranged on the first surface and the second surface, so that at least part of the plurality of connection lines connects a bonding contact on the first surface and a bonding contact on the second surface.

[0021] Another object of the present application is to provide a spliced ​​screen, which is composed of a plurality of display screens provided in the present application.

[0022] The display screen, display screen manufacturing method, and tiled screen provided by the embodiments of the present application utilize a bonding structure comprising multiple parallel, fine connecting wires. This ensures that when bonding contacts on the first and second sides of the display screen are connected via the bonding structure, each bonding contact can contact at least one connecting wire without requiring precise alignment, and adjacent bonding contacts on the same side will not be short-circuited by the connecting wires. This reduces the need for precise alignment of the side wire bonding, effectively improving bonding process efficiency and product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is one of the schematic diagrams of side routing in the prior art;

[0025] Figure 2 This is the second schematic diagram of side routing in the prior art;

[0026] Figure 3 A schematic diagram of defects in side routing in the prior art;

[0027] Figure 4 One of the schematic diagrams of the display screen provided in this embodiment;

[0028] Figure 5 This is a second schematic diagram of the display screen provided in this embodiment;

[0029] Figure 6 The third schematic diagram of the display screen provided in this embodiment;

[0030] Figure 7 One of the schematic diagrams of the bonding structure provided in this embodiment;

[0031] Figure 8 The second schematic diagram of the bonding structure provided in this embodiment;

[0032] Figure 9 This is a schematic flow chart of the steps of the display screen manufacturing method provided in this embodiment. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0037] It should be noted that, in the absence of conflict, different features in the embodiments of the present application can be combined with each other.

[0038] See Figure 1 In some display screens 910 that use side wiring, corresponding bonding contacts 920 are set on both the display surface and the back surface, and the bonding contacts 920 on the display surface and the back surface need to be connected through bonding cables 930. Please refer to Figure 2 Typically, a bonding contact 920 on the display surface needs to be electrically connected to a bonding contact 920 on the back surface. In the prior art, one bonding wire 930 is typically routed along the side, corresponding to a pair of bonding contacts 920. However, this approach requires precise alignment of the bonding wire 930 and the bonding contacts 920. Once alignment deviates, the bonding wire 930 may short-circuit two adjacent bonding contacts on the same surface, such as Figure 3 shown.

[0039] In view of this, this embodiment provides a solution that can reduce the requirement for side trace bonding alignment accuracy. The solution provided by this embodiment is described in detail below.

[0040] Please refer to Figure 4 , Figure 4 This is a schematic diagram of a display screen 100 provided in this embodiment. The display screen 100 includes a first surface 110, a second surface 120 opposite to the first surface 110, and a side surface 130 connecting the first surface 110 and the second surface 120. One of the first surface 110 and the second surface 120 is the display surface of the display screen 100, and the other is the surface where the driver backplane of the display screen 100 is located.

[0041] The first surface 110 and the second surface 120 are respectively provided with a plurality of bonding contacts 200 spaced apart along a first direction. Figure 4 The direction indicated by the dotted arrow. Figure 4 The shape of the display screen 100 shown is only one possible implementation of this embodiment. In other implementations of this embodiment, the display surface of the display screen 100 may be another polygonal shape, such as a square, rhombus, equilateral triangle, regular hexagon, etc. The first direction may be a direction extending along one side of the display surface. In addition, in this embodiment, multiple bonding contacts 200 may be arranged at intervals along multiple sides of the display screen 100.

[0042] The arrangement pitch of the plurality of bonding contacts 200 on the first side 110 is the same as the arrangement pitch of the plurality of bonding contacts 200 on the second side 120. For example, in one possible implementation, the bonding contacts 200 are all conductive metal blocks of equal size, and the plurality of bonding contacts 200 on the same side are arranged at equal intervals.

[0043] In this embodiment, the display screen 100 further includes a bonding structure extending from the first surface 110 through the side surface 130 to the second surface 120 . The bonding structure includes a plurality of connecting lines 310 extending in parallel from the first surface 110 to the second surface 120 .

[0044] Please refer to Figure 5The first spacing D1 between two adjacent bonding contacts 200 on the same surface is greater than the first width W1 of the connecting wire 310. This ensures that no connecting wire 310 can simultaneously contact two bonding contacts 200 on the same surface, thus preventing the two adjacent bonding contacts 200 on the same surface from being short-circuited. The second spacing D2 between the endpoints of two adjacent connecting wires 310 on the same surface is less than the second width W2 of any bonding contact 200 along the first direction. This ensures that no bonding contact 200 is located between two adjacent connecting wires 310, ensuring that any bonding contact 200 always contacts at least one connecting wire 310.

[0045] Because the bonding contacts 200 on the first side 110 and the second side 120 are arranged at equal intervals, at least some of the plurality of connecting wires 310 connect a bonding contact 200 on the first side 110 and a bonding contact 200 on the second side 120. Furthermore, at least some of the connecting wires 310 may have one end located between two adjacent bonding contacts 200 on the first side 110 and the other end located between two adjacent bonding contacts 200 on the second side 120.

[0046] Based on the above design, in this embodiment, even when the bonding structure does not require precise alignment with the bonding contacts 200, each bonding contact 200 is always electrically connected to the corresponding bonding contact 200 on the other side via at least one connecting wire 310, and shorting between bonding contacts 200 on the same side is always avoided. This reduces the need for precise alignment of the side trace bonding, effectively improving bonding process efficiency and product yield.

[0047] Moreover, under the condition of meeting the above-mentioned connection line spacing and width conditions, the bonding structure can adapt to display panels with various bonding contact spacings or sizes, so that the bonding structure can be used as a universal standard structural component for various different models of display screens, thereby simplifying the production process and improving production efficiency.

[0048] In some possible implementations, the first width W1 of the connection line 310 may be smaller than the second width W2 of the bonding contact 200 . For example, the first width is 1 / 10 to 1 / 5 of the second width.

[0049] In some possible implementations, the first width W1 of the connecting wires 310 is 1 to 5 microns, and the second spacing D2 between the connecting wires 310 is 1 to 5 microns. That is, the connecting wires 310 can be densely arranged on the bonding structure to ensure that the first spacing D1 between two adjacent bonding contacts 200 on the same surface is greater than the first width W1 of the connecting wires 310, and the second spacing D2 between the endpoints of two adjacent connecting wires 310 on the same surface is less than the second width W2 of any bonding contact 200 along the first direction.

[0050] In some possible implementations, the plurality of bonding contacts 200 on the first side 110 and the plurality of bonding contacts 200 on the second side 120 are mirror-imaged. This ensures that, when the plurality of connecting wires 310 extend in parallel and in a second direction perpendicular to the first direction, the bonding contacts 200 on the first side 110 are always electrically connected to the corresponding bonding contacts 200 on the second side 120 via the connecting wires 310.

[0051] In another possible implementation, see Figure 6 The multiple bonding contacts 200 on the first surface 110 and the multiple bonding contacts 200 on the second surface 120 may be staggered by a certain distance while ensuring equal spacing between the bonding contacts 200. Based on the staggered distance, the connecting wires 310 may be configured to extend at a certain angle along the side surface 130. However, it should be noted that the endpoint spacing and line width of the connecting wires 310 on the first surface 110 or the second surface 120 must still satisfy the following requirements: the first spacing D1 between two adjacent bonding contacts 200 on the same surface is greater than the first width W1 of the connecting wires 310, and the second spacing D2 between the endpoints of two adjacent bonding contacts 200 on the same surface is less than the second width W2 of any one of the bonding contacts 200 along the first direction.

[0052] In another possible implementation, see Figure 7 The bonding structure includes a base layer 320 and a protective layer 330 . The plurality of connection lines 310 are arranged on the base layer 320 . The protective layer 330 covers a side of the connection lines 310 away from the base layer 320 .

[0053] Furthermore, in this embodiment, the base layer 320 and the protection layer 330 are made of a flexible insulating material (eg, polyimide), and the connecting wire 310 is made of a flexible conductive material (eg, copper).

[0054] For further information, please refer to Figure 8At least one of the base layer 320 and the protective layer 330 exposes both ends of the plurality of connecting wires 310. At least some of the connecting wires 310 are in electrical contact with the bonding contacts on the first surface 110 and the second surface 120 through the exposed ends. During bonding, the bonding structure can be bent so that the exposed ends of the connecting wires 310 face the first surface 110 and the second surface 120, respectively. The ends of the connecting wires 310 are then bonded to the bonding contacts 200 through pressure bonding or cold welding.

[0055] Based on the same inventive concept, this embodiment also provides a method for manufacturing a display screen 100, please refer to Figure 9 , the method may include the following steps.

[0056] In step S110, a display panel is provided. The display panel includes a first surface 110, a second surface 120 opposite the display surface, and a side surface 130 connecting the first surface 110 and the second surface 120. The first surface 110 and the second surface 120 are each provided with a plurality of bonding contacts 200 spaced apart along a first direction. The spacing between the plurality of bonding contacts on the first surface 110 is the same as the spacing between the plurality of bonding contacts 200 on the second surface 120.

[0057] Step S120, providing a bonding structure, the bonding structure includes a plurality of parallel connecting lines 310, the first spacing between two adjacent bonding contacts 200 located on the same surface is greater than the first width of the connecting line 310, and the second spacing between the endpoints on the same side of two adjacent connecting lines 310 is less than the second width of any bonding contact 200 along the first direction.

[0058] In step S130 , two ends of the bonding structure are respectively disposed on the first surface 110 and the second surface 120 , so that at least part of the plurality of connection lines 310 connects a bonding contact 200 on the first surface 110 and a bonding contact 200 on the second surface 120 .

[0059] The two ends of the connecting wire 310 can be bonded to a pair of bonding contacts 200 on the first surface 110 and the second surface 120 respectively by means of anisotropic conductive adhesive (ACF) pressure bonding or cold welding, so that the bonding contacts 200 on the first surface 110 are electrically connected to the bonding contacts 200 on the second surface 120 through the connecting wire 310.

[0060] This embodiment further provides a spliced ​​screen, which is formed by splicing the display screens provided in this embodiment.

[0061] In summary, the display screen, display screen manufacturing method, and tiled screen provided by the embodiments of the present application utilize a bonding structure comprising multiple parallel, fine connecting wires. This ensures that when bonding contacts on the first and second sides of the display screen are connected via the bonding structure, each bonding contact can contact at least one connecting wire without requiring precise alignment, and adjacent bonding contacts on the same side will not be short-circuited by the connecting wires. This reduces the need for precise alignment of the side wire bonding, effectively improving bonding process efficiency and product yield.

[0062] Furthermore, the bonding structure provided in this embodiment can adapt to display panels with various bonding contact pitches or sizes, so that the bonding structure can be used as a universal standard structural component for various types of display screens, thereby simplifying the production process and improving production efficiency.

[0063] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A display screen, characterized in that: include: a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface; The first surface and the second surface are each provided with a plurality of bonding contacts spaced apart along a first direction; the arrangement spacing of the plurality of bonding contacts on the first surface is the same as the arrangement spacing of the plurality of bonding contacts on the second surface; the first direction is a direction extending along one side of the display surface of the display screen; wherein the display screen includes the plurality of pairs of bonding contacts arranged along the first direction, and a pair of the bonding contacts includes a bonding contact located on the first surface and a bonding contact located on the second surface; The display screen further includes a bonding structure extending from the first surface through one of the side surfaces to the second surface, the bonding structure including a plurality of connecting lines extending in parallel from the first surface to the second surface; The first spacing between two adjacent bonding contacts located on the same surface is greater than the first width of the connecting line, the second spacing between the endpoints of two adjacent bonding lines located on the same surface is less than the second width of any one of the bonding contacts along the first direction, and at least part of the multiple connecting lines connects a bonding contact located on the first surface and a bonding contact located on the second surface in the same pair of bonding contacts.

2. The display screen according to claim 1, wherein: The first width is smaller than the second width.

3. The display screen according to claim 1, wherein: The first width is 1 / 10 to 1 / 5 of the second width.

4. The display screen according to claim 1, wherein: The first width is 1 micron to 5 microns, and the second distance is 1 micron to 5 microns.

5. The display screen according to claim 1, wherein: One end of at least a portion of the connecting wires is located between two adjacent bonding contacts on the first surface of two adjacent pairs of bonding contacts, and the other end is located between two adjacent bonding contacts on the second surface of the two adjacent pairs of bonding contacts.

6. The display screen according to claim 1, wherein: The plurality of bonding contacts on the first side and the plurality of bonding contacts on the second side are mirror images.

7. The display screen according to claim 1, wherein: The bonding structure includes a base layer and a protective layer. The plurality of connection lines are arranged on the base layer. The protective layer covers a side of the connection lines away from the base layer.

8. The display screen according to claim 7, characterized in that The base layer and the protective layer are made of flexible insulating material, and the connecting wire is made of flexible conductive material.

9. The display screen according to claim 8, characterized in that At least one of the base layer and the protective layer exposes two ends of the plurality of connection lines, and at least some of the connection lines are electrically contacted with the binding contacts on the first surface and the second surface respectively through the exposed two ends.

10. A method for manufacturing a display screen, characterized in that: The method comprises: A display panel is provided, comprising a first surface, a second surface opposite to the display surface, and a side surface connecting the first and second surfaces; the first surface and the second surface are each provided with a plurality of bonding contacts arranged at intervals along a first direction; the arrangement spacing of the plurality of contacts on the first surface is the same as the arrangement spacing of the plurality of bonding contacts on the second surface; the first direction is a direction extending along one side of the display surface of the display screen; wherein the display screen includes the plurality of pairs of bonding contacts arranged along the first direction, and a pair of the bonding contacts includes a bonding contact located on the first surface and a bonding contact located on the second surface; A bonding structure is provided, comprising a plurality of parallel connecting lines, wherein a first spacing between two adjacent bonding contacts on the same surface is greater than a first width of the connecting line, and a second spacing between endpoints on the same side of two adjacent bonding lines is less than a second width of any bonding contact along the first direction; The two ends of the bonding structure are respectively arranged on the first surface and the second surface, so that at least part of the multiple connecting lines connect one bonding contact located on the first surface and one bonding contact located on the second surface in the same pair of the bonding contacts.

11. A splicing screen, characterized in that: The spliced ​​screen is composed of a plurality of display screens according to any one of claims 1 to 9.

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