Display assembly and display equipment

Abstract

The utility model belongs to the technical field of display, and particularly relates to a display assembly which comprises a display module and a flexible circuit board, the display module comprises a substrate, a driving circuit and a first connecting part, the driving circuit and the first connecting part are arranged on the substrate, and the first connecting part is in linear connection with the driving circuit; the flexible circuit board comprises a substrate, a first wiring part, a first reinforcing plate and a second connecting part, the first wiring part is arranged on the substrate, the second connecting part is electrically connected with the first wiring part, and the first reinforcing plate is arranged on the side, away from the substrate, of the first wiring part; the first connecting part and the second connecting part are connected through an anisotropic conductive adhesive film, the anisotropic conductive adhesive film contains conductive particles, the particle size of the conductive particles is set to be a, and a is smaller than or equal to 5 microns. According to the utility model, conductive particles with smaller particle sizes are used, so that the conductive particles can be prevented from accumulating. In addition, the utility model further discloses a display device comprising the display assembly.

Description

Technical Field

[0001] The utility model belongs to the field of display technology, and specifically relates to a display component and a display device. Background Art

[0002] FPC (Flexible Printed Circuit Board) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as the substrate. Compared with the rigid printed circuit board PCB (Printed Circuit Board Design), FPC has the advantages of being able to be bent, folded, and wound freely, which can make electronic products smaller and more precise, and greatly improve product reliability. FPC has been widely used in mobile communication products, laptops, consumer electronics, aerospace, military electronic equipment and other fields.

[0003] Among them, FPC is often used together with ACF (Anisotropic Conductive Film, which is a sticky film with conductive particles evenly distributed in it) on LCD (Liquid Crystal Display). When bonding FPC and LCD, it is easy to cause the accumulation of conductive particles in ACF. Therefore, it is urgent to propose a new technical solution to solve the above problem. Utility Model Content

[0004] One of the purposes of the utility model is to provide a display component to address the deficiencies of the prior art, which avoids the accumulation of conductive particles by using anisotropic conductive adhesive film with smaller conductive particle diameters.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A display assembly, comprising:

[0007] The display module comprises a substrate, a driving circuit arranged on the substrate and a first connecting portion, wherein the first connecting portion is connected to the driving circuit;

[0008] A flexible circuit board, comprising a substrate, a first wiring portion, a first reinforcing plate and a second connecting portion, wherein the first wiring portion is arranged on the substrate, the second connecting portion is electrically connected to the first wiring portion and extends in a direction away from the first wiring portion, the first reinforcing plate is arranged on a side of the first wiring portion away from the substrate, and there is a gap between the first reinforcing plate and the substrate;

[0009] The first connection part and the second connection part are connected via an anisotropic conductive adhesive film, the anisotropic conductive adhesive film contains conductive particles, and the particle size of the conductive particles is set to a, a≤5 um.

[0010] It can be understood that the flexible circuit board also includes components arranged on a substrate, the components include capacitors, resistors, diodes and transformers, etc., and the substrate is a flexible substrate; and the driving circuit also includes a gate driving circuit, a data driving circuit and a pixel circuit that are electrically connected to each other, and the display module also includes a light-emitting element; wherein the hetero-rectangular conductive adhesive film includes a thermosetting resin and the conductive particles located in the thermosetting resin, which are only conductive in the Z-axis direction.

[0011] As an improvement of the display assembly described in the utility model, the first connecting part includes a glass substrate, a metal gate, an insulating protection layer and an indium tin oxide layer which are bonded in sequence, and the indium tin oxide layer is formed with a plurality of protrusions and depressions which are connected in sequence.

[0012] As an improvement of the display component of the utility model, a plurality of the recesses are connected to the metal gate.

[0013] As an improvement of the display assembly described in the utility model, the insulating protective layer includes a first protective layer and a second protective layer, and the plurality of protrusions are provided with the first protective layer and the second protective layer bonded in sequence.

[0014] As an improvement of the display component described in the utility model, the length of the metal gate is smaller than the length of the glass substrate, so that both sides of the first connecting portion are the insulating protection layer, which can better protect the indium tin oxide layer.

[0015] As an improvement of the display assembly described in the utility model, the second connection portion is a gold finger, and a plurality of the gold fingers form the second connection portion.

[0016] As an improvement of the display component of the utility model, the pins formed by the indium tin oxide layer corresponding to the gold fingers have the same pin definition.

[0017] As an improvement of the display assembly described in the utility model, the flexible circuit board further includes a second reinforcing plate, and the second reinforcing plate is arranged on a side of the substrate away from the first reinforcing plate.

[0018] As an improvement to the display assembly described in the utility model, the projection of at least a portion of the second reinforcing plate in the positive direction overlaps with the projection of at least a portion of the first reinforcing plate in the positive direction, and the width of the overlapping area between the two is not less than 500μm, thereby ensuring the connection stability of the flexible circuit board.

[0019] A second objective of the present invention is to provide a display device, comprising the display assembly as described above.

[0020] The beneficial effect of the utility model is that the display component of the utility model includes a display module and a flexible circuit board, the display module includes a substrate, a driving circuit arranged on the substrate and a first connection part, the first connection part is connected to the driving circuit; the flexible circuit board includes a base, a first routing part, a first reinforcing plate and a second connection part, the first routing part is arranged on the base, the second connection part is electrically connected to the first routing part and extends in a direction away from the first routing part, the first reinforcing plate is arranged on a side of the first routing part away from the base, and there is a gap between the first reinforcing plate and the substrate; the first connection part and the second connection part are connected by an anisotropic conductive film, the anisotropic conductive film contains conductive particles, and the particle size of the conductive particles is set to a, a≤5um. The utility model can avoid the accumulation of conductive particles by using an anisotropic conductive film with a smaller conductive particle size; and there is a gap between the first reinforcing plate and the substrate to further prevent the accumulation of conductive particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0022] Figure 1 It is a bottom view of the flexible circuit board in the utility model.

[0023] Figure 2 It is a cross-sectional view of the flexible circuit board in the utility model.

[0024] Figure 3 It is a structural schematic diagram of the first connecting part in the utility model.

[0025] Figure 4 This is a cross-sectional schematic diagram of the connection between the flexible circuit board and the display module of the utility model.

[0026] The reference numerals are described as follows:

[0027] 1-display module; 11-substrate; 12-first connection portion; 121-glass substrate; 122-metal gate; 123-insulating protection layer; 1231-first protection layer; 1232-second protection layer; 124-indium tin oxide layer; 126-recess;

[0028] 2-flexible circuit board; 21-substrate; 22-first wiring portion; 23-first reinforcing plate; 231-arc portion; 24-gold finger; 25-second reinforcing plate;

[0029] 31- Conductive particles. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0032] Reference to "embodiment" in this application means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0035] The term "plurality" used in the present application refers to two or more (including two).

[0036] The following is combined with Figures 1 to 4The utility model is further described in detail with specific implementation modes, but is not intended to limit the utility model.

[0037] A display assembly includes a display module 1, including a substrate 11, a driving circuit arranged on the substrate 11, and a first connecting portion 12, wherein the first connecting portion 12 is connected to the driving circuit;

[0038] The flexible circuit board 2 includes a base 21, a first wiring portion 22, a first reinforcing plate 23 and a second connecting portion, wherein the first wiring portion 22 is arranged on the base 21, the second connecting portion is electrically connected to the first wiring portion 22 and extends in a direction away from the first wiring portion 22, the first reinforcing plate 23 is arranged on a side of the first wiring portion 22 away from the base 21, and a gap is provided between the first reinforcing plate 23 and the substrate 11 to prevent the accumulation of conductive particles 31;

[0039] The first connection part 12 is connected to the second connection part through an anisotropic conductive film, the anisotropic conductive film contains conductive particles 31, and the particle size of the conductive particles 31 is set to a, 0<a≤1um, 1<a≤2um, 2<a≤3um, 3<a≤4um, 4<a≤5um.

[0040] It can be understood that the flexible circuit board 2 also includes components arranged on the substrate 21, the components include capacitors, resistors, diodes and transformers, etc., and the substrate 21 is a flexible substrate; and the driving circuit also includes a gate driving circuit, a data driving circuit and a pixel circuit that are electrically connected to each other, and the display module 1 also includes a light-emitting element; wherein the hetero-rectangular conductive film includes a thermosetting resin (not shown) and conductive particles 31 located in the thermosetting resin, which are only conductive in the Z-axis direction.

[0041] Preferably, the second connection part is a gold finger 24, and a plurality of gold fingers 24 form the second connection part. The pins formed by the indium tin oxide layer 124 corresponding to the gold fingers 24 have the same pin definition to ensure their normal use.

[0042] Preferably, Figure 3 As shown, the flexible circuit board 2 also includes a second reinforcing plate 25, which is arranged on a side of the substrate 21 away from the first reinforcing plate 23, and the projection of at least a portion of the second reinforcing plate 25 in the positive direction coincides with the projection of at least a portion of the first reinforcing plate 23 in the positive direction, and the width of the overlapping portion of the two is ≥500μm, thereby ensuring the connection stability of the flexible circuit board.

[0043] It can be understood that there can be multiple reinforcement plates and multiple layers of wiring parts, which can be adjusted according to actual needs. When multiple reinforcement plates are provided, intervals should be left between the reinforcement plates. When multiple wiring parts are provided, the multiple wiring parts can be electrically connected through vias passing through the substrate 21. In addition, the reinforcement plates should completely cover the wiring parts to protect them.

[0044] Preferably, the first connection part 12 includes a glass substrate 121, a metal gate 122, an insulating protection layer 123 and an indium tin oxide layer 124 which are laminated in sequence, the indium tin oxide layer 124 is formed with a plurality of protrusions and recesses 126 which are connected in sequence, and the plurality of recesses 126 are connected to the metal gate 122; the insulating protection layer 123 includes a first protection layer 1231 and a second protection layer 1232, the plurality of protrusions are provided with the first protection layer 1231 and the second protection layer 1232 which are laminated in sequence, and the length of the metal gate 122 is less than the length of the glass substrate 121. The insulating protection layer 123 is provided on both sides of the first connection part 12, and can protect the pins formed thereon.

[0045] In some other embodiments, the first reinforcing plate 23 is provided with a plurality of continuous arc portions 231 on the side facing the substrate 11 , so that during bonding, the conductive particles 31 can be separated along the arc edges of the arc portions 231 , further preventing the conductive particles 31 from being accumulated.

[0046] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A display component, characterized in that: include: A display module (1) comprises a substrate (11), a driving circuit arranged on the substrate (11), and a first connecting portion (12), wherein the first connecting portion (12) is connected to the driving circuit; A flexible circuit board (2), comprising a base (21), a first wiring portion (22), a first reinforcing plate (23) and a second connecting portion, wherein the first wiring portion (22) is arranged on the base (21), the second connecting portion is electrically connected to the first wiring portion (22) and extends in a direction away from the first wiring portion (22), the first reinforcing plate (23) is arranged on a side of the first wiring portion (22) away from the base (21), and a gap is provided between the first reinforcing plate (23) and the substrate (11); The first connecting portion (12) is connected to the second connecting portion via an anisotropic conductive adhesive film, the anisotropic conductive adhesive film contains conductive particles (31), and the particle size of the conductive particles (31) is set to a, a≤5 um.

2. The display assembly according to claim 1, wherein: The first connection part (12) comprises a glass substrate (121), a metal gate (122), an insulating protection layer (123) and an indium tin oxide layer (124) which are bonded in sequence, and the indium tin oxide layer (124) is formed with a plurality of protrusions and depressions (126) which are connected in sequence.

3. The display assembly according to claim 2, characterized in that A plurality of the recesses (126) are connected to the metal gate (122).

4. The display assembly according to claim 2, characterized in that The insulating protective layer (123) comprises a first protective layer (1231) and a second protective layer (1232), and the plurality of protrusions are provided with the first protective layer (1231) and the second protective layer (1232) bonded in sequence.

5. The display assembly according to claim 2, wherein: The length of the metal gate (122) is smaller than the length of the glass substrate (121).

6. The display assembly according to claim 2, wherein: The second connection part is a gold finger (24), and a plurality of the gold fingers (24) form the second connection part.

7. The display assembly according to claim 6, characterized in that The pins formed by the indium tin oxide layer (124) corresponding to the gold fingers (24) have the same pin definition.

8. The display assembly according to claim 1, wherein: The flexible circuit board (2) further comprises a second reinforcing plate (25), wherein the second reinforcing plate (25) is arranged on a side of the base (21) away from the first reinforcing plate (23).

9. The display assembly according to claim 8, characterized in that The projection of at least a portion of the second reinforcing plate (25) in the positive direction coincides with the projection of at least a portion of the first reinforcing plate (23) in the positive direction.

10. A display device, characterized in that: The invention comprises a display assembly as claimed in any one of claims 1 to 9.

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