Easily-torn composite insulating single-sided adhesive structure

Abstract

The utility model discloses an easy-to-tear composite insulating single-sided adhesive structure, which comprises an insulating film, an isolating film and a repasting film, the insulating film is made of an electric insulating material, the non-sticky surface of the insulating film comprises a first part and a second part, the first part is adhered to the sticky surface of the repasting film, the second part is propped against the non-sticky surface of the isolating film in an isolating manner, and the insulating film is used for isolating a component area of the circuit board. Therefore, the component area is prevented from being interfered by external electric signals. According to the utility model, one part of the non-adhesive surface of the insulating film is adhered to the adhesive surface of the repasting film, and the other part of the non-adhesive surface of the insulating film is propped against the non-adhesive surface of the isolating film, so that the surface area of the insulating film adhered to the repasting film is reduced, and the viscosity between the insulating film and the repasting film is weakened. After the insulating film is attached to the component area of the circuit board, a worker tears down the transfer film and the isolating film, the insulating film cannot be synchronously taken up by the transfer film, the insulating film is attached to the component area of the circuit board, and therefore the transfer film and the insulating film are separated.

Description

Technical Field

[0001] The utility model relates to the field of single-sided adhesive, in particular to an easy-to-tear composite insulating single-sided adhesive structure. Background Art

[0002] In recent years, the production cost pressure of manufacturing LCD display modules and AMOLED display modules has been increasing. In order to reduce material and labor costs, LCD display modules and AMOLED display modules need to be attached with multiple insulating films to insulate the component area of ​​their FPC. The insulating film adopts an all-in-one composite structure design. This structure requires the addition of a single-sided weakly sticky PET transfer film as a composite carrier. In the actual attachment process, due to factors such as the small size and poor flatness of the device area, it is easy to tear off the transfer film after attachment and lift up the insulating film, resulting in poor anti-release and poor attachment of the insulating film to the component area. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an easy-to-tear composite insulating single-sided adhesive structure.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An easily attached insulating structure comprises: an insulating film, an isolating film and a transfer film; the insulating film is made of an electrically insulating material, the insulating film, the isolating film and the transfer film comprise a sticky surface and a non-sticky surface, the sticky surface of the transfer film is bonded to the sticky surface of the isolating film, the non-sticky surface of the insulating film comprises a first part and a second part, the first part is bonded to the sticky surface of the transfer film, the second part is isolated and abutted against the non-sticky surface of the isolating film, and the insulating film is used to isolate a component area of ​​a circuit board to prevent the component area from being interfered by external electrical signals.

[0006] In one embodiment, the insulating film includes a plurality of insulating monomer films, and the insulating monomer films are arranged at intervals on the entire transfer film and the isolation film.

[0007] In one embodiment, the ratio of the bonding area between the insulating monomer film and the transfer film to the isolation area between the insulating monomer film and the isolation film is 1:1.

[0008] In one embodiment, the isolation film is provided with uneven textures on the contact surface with the insulating film.

[0009] In one of the embodiments, an avoidance gap is provided on the transfer film.

[0010] In one embodiment, a handle is extended from the outer edge of the transfer film.

[0011] In one embodiment, the number of the handles is two, and the two handles are symmetrically arranged at two ends of the transfer film.

[0012] In one embodiment, the isolation film is attached to one side of the insulating monomer film close to the handle.

[0013] In one embodiment, the isolation film is a PET film.

[0014] In one embodiment, the transfer film is a PET film.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The easily torn composite insulating single-sided adhesive structure of the utility model is provided with an insulating film, an isolation film and a transfer film. The insulating film, the isolation film and the transfer film include a sticky surface and a non-sticky surface. The sticky surface of the transfer film is bonded to the sticky surface of the isolation film. The non-sticky surface of the insulating film includes a first part and a second part. The first part is bonded to the sticky surface of the transfer film, and the second part is isolated and abutted against the non-sticky surface of the isolation film, so that a part of the non-sticky surface of the insulating film is bonded to the sticky surface of the transfer film, and the other part abuts against the non-sticky surface of the isolation film, so that the surface area of the insulating film adhered to the transfer film is reduced, and the adhesion between the two is weakened. When the insulating film is attached to the component area of the circuit board, the staff needs to tear off the transfer film and the isolation film, so that the insulating film will not be synchronously lifted by the transfer film, and the insulating film is attached to the component area of the circuit board, thereby separating the transfer film and the insulating film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 Schematic diagram of the front structure of the easily torn composite insulating single-sided adhesive structure in one embodiment of the present utility model;

[0019] Figure 2 Schematic diagram of the side structure of the easily torn composite insulating single-sided adhesive structure in one embodiment of the present utility model;

[0020] Figure 3 Schematic diagram of the structure of the insulating film in one embodiment of the present utility model;

[0021] Figure 4 Schematic diagram of the structure of the isolation film in one embodiment of the present utility model;

[0022] Figure 5 Schematic diagram of the structure of the transfer film in one embodiment of the present utility model.

[0023] Reference numerals:

[0024] Insulating film 10, insulating monomer film 11, first part 12, second part 13, isolation film 20, transfer film 30, avoidance notch 31, handle 32. Detailed implementation manners

[0025] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0026] This application provides an easily tearable composite insulating single-sided adhesive structure. Please refer to FIGS. 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 , which includes: an insulating film 10, an isolation film 20 and a transfer film 30. The insulating film 10, the isolation film 20 and the transfer film 30 include a sticky surface and a non-sticky surface. The insulating film 10 is made of an electrically insulating material, and the sticky surface of the insulating film 10 is used for bonding and covering the component area on the circuit board, so that the electronic devices in the component area are protected from external noise interference. The sticky surface of the transfer film 30 is bonded to the sticky surface of the isolation film 20. The non-sticky surface of the insulating film 10 includes a connected first part 12 and a second part 13. The first part 12 is bonded to the sticky surface of the transfer film 30, and the second part 13 is isolated and abutted against the non-sticky surface of the isolation film 20. That is, the second part 13 of the insulating film 10 does not contact and bond with the transfer film 30, so that a part of the non-sticky surface of the insulating film 10 is bonded to the sticky surface of the transfer film 30, and the other part abuts against the non-sticky surface of the isolation film 20. Furthermore, the surface area of the insulating film 10 adhered to the transfer film 30 is reduced, and the adhesion between the two is weakened, so that the insulating film 10 can better fall off from the transfer film 30. When the insulating film 10 is attached to the component area of the circuit board, the staff needs to tear off the transfer film 30 and the isolation film 20, so that the insulating film 10 will not be synchronously lifted by the transfer film 30, and the insulating film 10 is attached to the component area of the circuit board, thereby separating the transfer film 30 and the insulating film 10. Preferably, the isolation film 20 is a PET film.

[0027] It should be noted that when attaching, the entire easily tearable composite insulating single-sided adhesive structure is attached to the circuit board, and the sticky surface of the insulating film 10 corresponds to the component area on the circuit board. Gently press the insulating film 10 at the corresponding position in the component area to bond the insulating film 10 to the component area, and then tear off the transfer film 30 and the isolation film 20. It should be noted that the pressure should be appropriate. Since the components in the component area are sharp, avoid piercing the insulating film 10.

[0028] In an embodiment, please refer to FIGS. Figure 1 and Figure 3, the insulating film 10 includes a plurality of insulating monomer films 11, and the insulating monomer films 11 are arranged at intervals on the entire transfer film 30. The release film 20 is arranged according to the distribution of the insulating monomer films 11, separating the second part 13 of the insulating film 10 from the transfer film 30 without adhesion, and the release film 20 is also not adhered to the insulating film 10, reducing the adhesion area of the adhesive surface between the insulating film 10 and the transfer film 30, making it easy for the insulating film 10 to fall off the transfer film 30, and when peeling off the transfer film 30, the insulating film 10 will not be lifted. And multiple insulating monomer films 11 can improve the pasting efficiency.

[0029] Furthermore, the insulating monomer film 11 needs to be attached to the transfer film 30 to prevent the insulating monomer film 11 from falling off the transfer film 30 during material taking, resulting in inaccurate attachment to the circuit board. Preferably, the ratio of the adhesion area between the insulating monomer film 11 and the transfer film 30 to the isolation area between the insulating monomer film 11 and the release film 20 is 1:1, so that the insulating monomer film 11 can be ensured to be adhered to the transfer film 30 without loosening, and it can be ensured that the insulating monomer film 11 can be easily torn off the transfer film 30.

[0030] In one embodiment, the release film 20 is provided with uneven patterns on the contact surface with the insulating film 10 to prevent the second part 13 of the insulating film 10 from being attracted to the release film 20 due to molecular attraction and being difficult to tear off.

[0031] It should be noted that the adhesion position of the insulating film 10 on the transfer film 30 is correspondingly set according to the position of the component area of the circuit board. The shape and size of the insulating film 10 are set according to the shape and size of the component area, so that the insulating film 10 can be fully attached to the component area, and the size of the insulating film 10 is slightly larger than the component area to ensure insulation.

[0032] Please refer to Figure 1 , the transfer film 30 is provided with an avoidance notch 31. During the process of attaching the insulating film 10, it is ensured that the entire transfer film 30 avoids the setting of some parts when attaching to the product, making the attachment more efficient and accurate.

[0033] Furthermore, a handle 32 extends from the outer edge of the transfer film 30, and the handle 32 is arranged on the short side of the transfer film 30. When peeling off the transfer film 30, the staff only needs to pull the handle 32, which is convenient and efficient. Since the adhesive surface of the release film 20 is adhered to the adhesive film of the transfer film 30, therefore, when pulling up the handle 32, the release film 20 will be torn off together. Preferably, the transfer film 30 is a PET film.

[0034] Still further, the number of the handles 32 is two, and the two handles 32 are symmetrically arranged at both ends of the transfer film 30, so that the transfer film 30 can be torn in multiple directions, or torn simultaneously from two directions.

[0035] In addition, the isolation film 20 is attached to the side of the insulating monomer film 11 close to the handle 32. When the handle 32 is pulled up, the second part 13 of the insulating film 10 can be separated from the isolation film 20 first, so that the first part 12 of the insulating film 10 can better separate from the transfer film 30 along with the trend, without lifting the insulating film 10 from the component area of the circuit board.

[0036] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An easy-to-tear composite insulation single-sided adhesive structure, characterized in that: include: Insulation film, isolation film and transfer film; The insulating film is made of an electrically insulating material. The insulating film, the isolation film and the transfer film include a sticky surface and a non-sticky surface. The sticky surface of the transfer film is bonded to the sticky surface of the isolation film. The non-sticky surface of the insulating film includes a first part and a second part. The first part is bonded to the sticky surface of the transfer film, and the second part is isolated and abutted against the non-sticky surface of the isolation film. The insulating film is used to isolate the component area of ​​the circuit board to prevent the component area from being interfered by external electrical signals.

2. The easily tearable composite insulating single-sided adhesive structure according to claim 1, characterized in that: The insulating film comprises a plurality of insulating monomer films, and the insulating monomer films are arranged at intervals on the entire transfer film and the isolation film.

3. The easily tearable composite insulating single-sided adhesive structure according to claim 2, characterized in that: The ratio of the bonding area between the insulating monomer film and the transfer film to the isolation area between the insulating monomer film and the isolation film is 1:

1.

4. The easily tearable composite insulating single-sided adhesive structure according to claim 1, characterized in that: The isolation film is provided with uneven textures on the contact surface with the insulating film.

5. The easily tearable composite insulating single-sided adhesive structure according to claim 1, characterized in that: The transfer film is provided with an avoidance gap.

6. The easily tearable composite insulating single-sided adhesive structure according to claim 2, characterized in that: A handle is extended from the outer edge of the transfer film.

7. The easily tearable composite insulating single-sided adhesive structure according to claim 6, characterized in that: There are two handles, which are symmetrically arranged at two ends of the transfer film.

8. The easily tearable composite insulating single-sided adhesive structure according to claim 6, characterized in that: The isolation film is attached to a side of the insulating monomer film close to the handle.

9. The easily tearable composite insulating single-sided adhesive structure according to claim 1, characterized in that: The isolation film is a PET film.

10. The easily tearable composite insulating single-sided adhesive structure according to claim 1, characterized in that: The transfer film is a PET film.

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