FPC double-sided adhesive structure
By setting up an integrated double-sided adhesive structure and anti-fall design on the FPC, the problem of low efficiency of double-sided adhesive film and tearing film is solved, and the stability of efficient adhesive film under high temperature conditions is achieved, and the working efficiency is improved and product quality.
Patent Information
- Application Number
- CN202420119013.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-17
AI Technical Summary
During the production and use of FPC, the double-sided film and tearing film in the prior art are inefficient, and the protective film needs to be attached and tear off in two times, and the protective film is prone to fall off under high temperature conditions.
Design a FPC double-sided adhesive structure, and the integrated structure is formed by setting the first double-sided adhesive and the second double-sided adhesive on a single protective film, and setting the anti-fall structure on the protective film, such as the anti-fall semi-cutting line, to achieve Single film-plated and tearing operations to avoid deformation and fall off of protective film caused by high temperature.
The efficiency of film patching and tearing is improved, ensuring that the protective film does not fall off under high temperature conditions, and improving work efficiency and product quality.
Smart Images
Figure CN222216024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of double-sided adhesive, in particular to an FPC double-sided adhesive structure. Background Art
[0002] With the continuous development of science and technology, FPC (flexible circuit board) is more and more widely used in electronic products. However, in the production and use of FPC, it is often necessary to stick FPC to other objects. For example, in the field of display screen production and manufacturing, FPC is used in large quantities. When assembling FPC, FPC needs to be bent and fixed to the iron frame or casing on the back, so double-sided adhesive is needed to fix FPC. There are usually two areas on FPC where double-sided adhesive needs to be attached. The conventional method is to divide the double-sided adhesive into two sections and attach them to the two areas on FPC where double-sided adhesive needs to be attached respectively, so it needs to be attached twice. At the same time, the protective film on the double-sided adhesive needs to be torn off twice when using it. Therefore, this method is inefficient. Utility Model Content
[0003] The utility model aims to overcome the shortcomings of the prior art and provide an FPC double-sided adhesive structure capable of improving film sticking efficiency and film tearing efficiency.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] An FPC double-sided adhesive structure comprises: an FPC and a double-sided adhesive assembly, wherein a first adhesive area and a second adhesive area are arranged on the FPC; the double-sided adhesive assembly comprises a first double-sided adhesive, a second double-sided adhesive and a protective film, wherein the first double-sided adhesive and the second double-sided adhesive are respectively arranged on the protective film so that the first double-sided adhesive and the second double-sided adhesive form an integrated structure, wherein the first double-sided adhesive is attached to the first adhesive area, and the second double-sided adhesive is attached to the second adhesive area; an anti-falling structure is also arranged on the protective film, and the anti-falling structure is located between the first double-sided adhesive and the second double-sided adhesive.
[0006] In one of the embodiments, when the double-sided adhesive component is attached to the FPC, one end of the protective film extends away from the FPC and forms a tear handle.
[0007] In one embodiment, the width of the tear handle is greater than or equal to 2 mm.
[0008] In one embodiment, the anti-falling structure is an anti-falling half-cutting line, and the anti-falling half-cutting line is located between the first double-sided adhesive tape and the second double-sided adhesive tape.
[0009] In one embodiment, one anti-slip half-cut line is provided, and the anti-slip half-cut line is located in the central area of the protective film.
[0010] In one embodiment, two anti-slip half-cut lines are provided, and the two anti-slip half-cut lines are arranged at intervals, one of the anti-slip half-cut lines is close to the first double-sided adhesive tape, and the other anti-slip half-cut line is close to the second double-sided adhesive tape.
[0011] In one embodiment, when two anti-slip half-cut lines are provided, the opening end of one of the anti-slip half-cut lines is located on one side of the protective film, and the opening end of the other anti-slip half-cut line is located on the other side of the protective film.
[0012] In one embodiment, the protective film is a PET protective film.
[0013] In one embodiment, the first double-sided adhesive is a conductive double-sided adhesive.
[0014] In one embodiment, the second double-sided adhesive is a conductive double-sided adhesive.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] 1. The FPC double-sided adhesive structure of the utility model is provided with an FPC and a double-sided adhesive assembly, so that a single protective film can be used as a carrier film, and the first double-sided adhesive 210 and the second double-sided adhesive 220 are provided on the same protective film, so that the first double-sided adhesive and the second double-sided adhesive form an integrated structure, so that a single film sticking and tearing operation can be realized, thereby improving work efficiency.
[0017] 2. The FPC double-sided adhesive structure of the present invention can prevent the protective film from being excessively deformed due to high temperature and falling off from the surface of the first double-sided adhesive or / and the second double-sided adhesive by providing an anti-falling structure on the protective film. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 It is a structural schematic diagram of the FPC double-sided adhesive structure in one embodiment of the utility model;
[0020] Figure 2 It is a structural schematic diagram of a double-sided adhesive assembly in one embodiment of the utility model;
[0021] Figure 3 It is a structural schematic diagram of a double-sided adhesive assembly in another embodiment of the utility model. DETAILED DESCRIPTION
[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0023] See also Figure 1 , Figure 2 and 3 As shown, an FPC double-sided adhesive structure 10 includes: an FPC 100 and a double-sided adhesive component 200, wherein a first adhesive region 110 and a second adhesive region 120 are arranged on the FPC 100; the double-sided adhesive component 200 includes a first double-sided adhesive 210, a second double-sided adhesive 220 and a protective film 230, wherein the first double-sided adhesive 210 and the second double-sided adhesive 220 are respectively arranged on the protective film 230, so that the first double-sided adhesive 210 and the second double-sided adhesive 220 form an integrated structure, wherein the first double-sided adhesive 210 is attached to the first adhesive region 110, and the second double-sided adhesive 220 is attached to the second adhesive region 120; an anti-falling structure 231 is also arranged on the protective film 230, and the anti-falling structure 231 is located between the first double-sided adhesive 210 and the second double-sided adhesive 220.
[0024] It should be noted that a single protective film 230 is used as a carrier film, and the first double-sided adhesive 210 and the second double-sided adhesive 220 are arranged on the same protective film 230, so that the first double-sided adhesive 210 and the second double-sided adhesive 220 form an integrated structure. In this way, when performing the attaching operation, only one alignment and attaching operation is required. In this way, compared with the existing method of dividing the double-sided adhesive into two sections and attaching them separately, the efficiency of attaching the double-sided adhesive can be further improved; at the same time, when using it, it only takes one time to tear off the protective film on the double-sided adhesive, thereby improving the efficiency of tearing off the film; in this way, work efficiency can be improved.
[0025] Furthermore, since the first double-sided adhesive 210 and the second double-sided adhesive 220 are designed as an integrated whole, the following problems may occur under high temperature conditions: since the FPC is flexible, it will be deformed under the influence of high temperature and other conditions, and the protective film on the double-sided adhesive will also be deformed accordingly. In order to facilitate film application and film removal, the protective film is usually made of a relatively hard material. Therefore, if the deformation is too large, it is easy to cause the protective film to fall off from the surface of the first double-sided adhesive 210 or / and the second double-sided adhesive 220. Therefore, in order to prevent the protective film from falling off due to heat, an anti-falling structure 231 is provided on the protective film 230, and the anti-falling structure 231 can prevent the problem of the protective film falling off.
[0026] It should also be noted that, in order to facilitate pasting, the size of the first double-sided adhesive needs to be smaller than the size of the first pasting area, and the size of the second double-sided adhesive needs to be smaller than the size of the second pasting area. In this way, it can be avoided that the attachment position of the first double-sided adhesive or the second double-sided adhesive exceeds the FPC due to the existence of positioning deviation, thereby avoiding the area where the first double-sided adhesive or the second double-sided adhesive exceeds the contamination of foreign matter and affecting the quality of subsequent products.
[0027] Further, when the double-sided adhesive assembly 200 is attached to the FPC 100, one end of the protective film 230 extends away from the FPC 100 and forms a tear handle 231. The tear handle 231 facilitates the operator to tear off the protective film 230. Preferably, the width of the tear handle 231 is greater than or equal to 2 mm.
[0028] In one embodiment, the anti-drop structure 231 is an anti-drop half-cut line, and the anti-drop half-cut line is located between the first double-sided adhesive tape 210 and the second double-sided adhesive tape 220 .
[0029] It should be noted that the anti-detachment half-cut line means that the protective film is not completely punched out, but partially punched out to retain a part of the connection. Then, when the FPC is deformed by factors such as high temperature, and the protective films on the first double-sided adhesive 210 and the second double-sided adhesive 220 are also deformed, the elastic force of the protective film is released through the anti-detachment half-cut line to prevent the protective film from detaching from the surface of the first double-sided adhesive and / or the second double-sided adhesive due to excessive deformation.
[0030] In one embodiment, one anti-stripping half-cutting line is provided, and the anti-stripping half-cutting line is located in the central area of the protective film. The elastic force of the deformed protective film is released by the anti-stripping half-cutting line, thereby preventing the protective film from being detached from the first double-sided adhesive or / and the second double-sided adhesive due to excessive deformation.
[0031] In another embodiment, two anti-slip half-cutting lines are provided, and the two anti-slip half-cutting lines are arranged at intervals, one of which is close to the first double-sided adhesive 210, and the other is close to the second double-sided adhesive 220. In this way, the deformation elastic force of the area of the protective film corresponding to the first double-sided adhesive 210 and the second double-sided adhesive 220 is released respectively by the two anti-slip half-cutting lines. In this embodiment, when two anti-slip half-cutting lines are provided, the opening end of one of the anti-slip half-cutting lines is located on one side of the protective film 230, and the opening end of the other anti-slip half-cutting line is located on the other side of the protective film 230. In this way, when the two anti-slip half-cutting lines are provided on the same side, the strength of the protective film is reduced, which causes the protective film to be easily torn.
[0032] Preferably, the protective film 230 is a PET (polyester) protective film. The PET film material is relatively hard, and can be easily attached and torn off.
[0033] Preferably, the first double-sided adhesive 210 is a conductive double-sided adhesive. The conductive double-sided adhesive can be a high-temperature conductive double-sided adhesive to ensure that the first double-sided adhesive 210 can still maintain better bonding performance under high temperature conditions. In another embodiment, the first double-sided adhesive 210 can also be made of other double-sided adhesive tapes with sticky materials.
[0034] Preferably, the second double-sided adhesive 220 is a conductive double-sided adhesive. The conductive double-sided adhesive can be a high-temperature conductive double-sided adhesive to ensure that the second double-sided adhesive 220 can still maintain better bonding performance under high temperature conditions. In another embodiment, the second double-sided adhesive 220 can also be made of other double-sided adhesive tapes with sticky materials.
[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A double-sided adhesive structure of FPC, characterized in that: include: FPC, wherein a first pasting area and a second pasting area are provided on the FPC; and A double-sided adhesive assembly, the double-sided adhesive assembly comprising a first double-sided adhesive, a second double-sided adhesive and a protective film, the first double-sided adhesive and the second double-sided adhesive are respectively arranged on the protective film so that the first double-sided adhesive and the second double-sided adhesive form an integrated structure, and the first double-sided adhesive is attached to the first adhesive area, and the second double-sided adhesive is attached to the second adhesive area; The protective film is also provided with an anti-falling structure, and the anti-falling structure is located between the first double-sided adhesive and the second double-sided adhesive.
2. The FPC double-sided adhesive structure according to claim 1, characterized in that: When the double-sided adhesive component is attached to the FPC, one end of the protective film extends away from the FPC to form a tear handle.
3. The FPC double-sided adhesive structure according to claim 2, characterized in that: The width of the tear handle is greater than or equal to 2 mm.
4. The FPC double-sided adhesive structure according to any one of claims 1 to 3, characterized in that: The anti-falling structure is an anti-falling half-cutting line, and the anti-falling half-cutting line is located between the first double-sided adhesive tape and the second double-sided adhesive tape.
5. The FPC double-sided adhesive structure according to claim 4, characterized in that: One anti-slipping half-cutting line is provided, and the anti-slipping half-cutting line is located in the central area of the protective film.
6. The FPC double-sided adhesive structure according to claim 4, characterized in that: Two anti-slip half-cutting lines are provided, and the two anti-slip half-cutting lines are arranged at intervals, one of the anti-slip half-cutting lines is close to the first double-sided adhesive tape, and the other anti-slip half-cutting line is close to the second double-sided adhesive tape.
7. The FPC double-sided adhesive structure according to claim 6, characterized in that: When two anti-slip half-cut lines are provided, the opening end of one of the anti-slip half-cut lines is located on one side of the protective film, and the opening end of the other anti-slip half-cut line is located on the other side of the protective film.
8. The FPC double-sided adhesive structure according to any one of claims 1 to 3, characterized in that: The protective film is a PET protective film.
9. The FPC double-sided adhesive structure according to any one of claims 1 to 3, characterized in that: The first double-sided adhesive is a conductive double-sided adhesive.
10. The FPC double-sided adhesive structure according to any one of claims 1 to 3, characterized in that: The second double-sided adhesive is a conductive double-sided adhesive.