Waterproof circuit board and film binding structure

Abstract

The utility model discloses a waterproof circuit board and film binding structure, which comprises a waterproof rubber block, a circuit board and a film, the film is provided with a binding opening along the thickness direction of the film, and the film comprises a first surface and a second surface which are opposite to each other; the circuit board is arranged on the first face of the film, the binding end of the circuit board penetrates through the binding opening from the first face of the film to be attached to the second face, and the waterproof rubber block is filled in a gap between the circuit board and the binding opening. Wherein the binding end of the circuit board is attached to the second surface from the first surface of the film through the binding opening, and the binding gap between the film and the circuit board is filled with the waterproof rubber block, so that the binding end of the circuit board is arranged on the second surface of the film, and a sealed space is formed in the second surface of the film, so that the waterproof performance of the binding position of the circuit board is improved; therefore, the reliability of the product is improved.

Description

Technical Field

[0001] The utility model relates to the field of touch screens, in particular to a waterproof circuit board and film binding structure. Background Art

[0002] With the development of technology, the application scenarios of touch screens are becoming more and more abundant. However, when the touch screen is used outdoors and in the bathroom, rain or water vapor is very easy to enter the touch screen. When the liquid enters the FPC binding position, the rain, air and FPC binding position react, corroding the metal at the binding position and affecting the function of the touch screen. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a waterproof circuit board and film binding structure.

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

[0005] A waterproof circuit board and film sheet binding structure comprises: a waterproof rubber block, a circuit board and a film sheet, wherein the film sheet is provided with a binding opening along its thickness direction, and the film sheet comprises a first surface and a second surface opposite to each other; the circuit board is arranged on the first surface of the film sheet, a binding end of the circuit board passes through the binding opening from the first surface of the film sheet and is attached to the second surface, and the waterproof rubber block is filled in the gap between the circuit board and the binding opening.

[0006] In one embodiment, the binding opening is in a convex shape.

[0007] In one embodiment, the binding opening is arranged at the top of the film sheet.

[0008] In one embodiment, the circuit board is an FPC.

[0009] In one embodiment, the waterproof adhesive block is a UV adhesive block.

[0010] In one embodiment, a component area is provided on the FPC, and a hard sheet is provided on the back side of the component area.

[0011] In one of the embodiments, it further includes an adhesive layer, and the FPC is bonded to the first surface of the film through the adhesive layer.

[0012] In one embodiment, a connector is provided at one end of the circuit board away from the binding end.

[0013] In one of the embodiments, a hook extends from the second surface of the film sheet, and a latch for latching with the hook is provided on the binding end of the circuit board.

[0014] In one embodiment, the number of the hooks is two, the number of the slots on the circuit board is two, and the hooks are held in the slots.

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

[0016] The waterproof circuit board and film sheet binding structure of the utility model is provided with a waterproof rubber block, a film sheet and a circuit board. The binding end of the circuit board is attached to the second surface of the film sheet through a binding opening from the first surface. The binding gap between the film sheet and the circuit board is filled with the waterproof rubber block, so that the binding end of the circuit board is arranged on the second surface of the film sheet, and the second surface of the film sheet is a sealed space, thereby improving the waterproof performance of the binding position of the circuit board, thereby improving the reliability of the product. 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 for use in the embodiments are briefly introduced below.

[0018] Figure 1 It is a side structural diagram of a waterproof circuit board and film sheet binding structure in one embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the partial structure of a film sheet in one embodiment of the utility model.

[0020] Reference numerals:

[0021] Waterproof rubber block 10 , film sheet 20 , binding opening 21 , first surface A, second surface B, circuit board 30 , binding end 31 . 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] This application proposes a waterproof circuit board and film binding structure that can be used in touch screens. Figure 1 and Figure 2 , including: a waterproof rubber block 10, a film sheet 20 and a circuit board 30, the binding end 31 of the circuit board 30 is attached to the second surface B from the first surface A of the film sheet 20 through the binding opening 21, and the binding gap between the film sheet 20 and the circuit board 30 is filled with the waterproof rubber block 10, so that the binding end 31 of the circuit board 30 is set on the second surface B of the film sheet 20, and the second surface B of the film sheet 20 is a sealed space, thereby improving the waterproof performance of the binding position of the circuit board 30, thereby improving the reliability of the product.

[0024] It should be noted that the space inside the second surface B of the film sheet 20 is a sealed space, so the binding end 31 of the circuit board 30 will not be corroded by moisture in the space inside the second surface B.

[0025] Among them, see Figure 2 The binding opening 21 is in a "convex" shape, and the binding opening 21 includes a large rectangular opening and a small rectangular opening. The small rectangular opening is connected to the large rectangular opening. The circuit board 30 is inserted from the large rectangular opening and adhered to the first surface A and the second surface B of the circuit board 30. The waterproof rubber block 10 can be bonded to the circuit board 30 and the film sheet 20 through the small rectangular opening, so that the fixation between the film sheet 20 and the circuit board 30 is more secure.

[0026] For further information, see Figure 1 The binding opening 21 is arranged at the top of the film sheet 20, so that other components can be arranged on the rest of the film sheet 20. Preferably, the waterproof adhesive block 10 is a UV adhesive block.

[0027] In one embodiment, the circuit board 30 is an FPC. Since the FPC is soft and has a certain plasticity, the binding end 31 of the FPC can be bent so that the binding end 31 of the FPC can smoothly pass through the binding opening 21 from the first side A of the film sheet 20 to the second side B. Furthermore, a component area is provided on the FPC, and a hard sheet is provided on the back of the component area to support the component area and prevent the FPC from breaking due to exceeding the load-bearing performance. In order to further make the connection between the FPC and the film sheet 20 more stable, the part of the FPC attached to the first side A of the film sheet 20 is bonded to the first side A of the film sheet 20 through an adhesive layer.

[0028] In another embodiment, a connector is provided at one end of the circuit board 30 away from the binding end 31, so as to facilitate quick connection between the connector and the mainboard. As a preferred embodiment, a hook extends from the second side B of the film 20, and a bayonet for holding the hook is provided on the binding end 31 of the circuit board 30. When the binding end 31 of the circuit board 30 penetrates the second side B, the bayonet on it is aligned with the hook, so that the circuit board 30 is initially positioned on the film 20, so as to facilitate subsequent filling of the waterproof rubber block 10. In addition, in order to further strengthen the connection strength between the hook and the bayonet, the number of the hooks is two, and the number of the bayonet on the circuit board 30 is two, and the hook is held in the bayonet.

[0029] 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 waterproof circuit board and film binding structure, characterized in that: include: Waterproof rubber block, A film sheet, wherein the film sheet has a binding opening along a thickness direction thereof, and the film sheet comprises a first surface and a second surface opposite to each other; A circuit board is arranged on the first surface of the film sheet, the binding end of the circuit board passes through the binding opening from the first surface of the film sheet and is attached to the second surface, and the waterproof rubber block is filled in the gap between the circuit board and the binding opening.

2. The waterproof circuit board and film binding structure according to claim 1, characterized in that: The binding opening is in the shape of a "convex" character.

3. The waterproof circuit board and film binding structure according to claim 1, characterized in that: The binding opening is arranged at the top of the film sheet.

4. The waterproof circuit board and film binding structure according to claim 1, characterized in that: The circuit board is an FPC.

5. The waterproof circuit board and film binding structure according to claim 4, characterized in that: A component area is arranged on the FPC, and a hard sheet is arranged on the back of the component area.

6. The waterproof circuit board and film binding structure according to claim 1, characterized in that: The waterproof rubber block is a UV rubber block.

7. The waterproof circuit board and film binding structure according to claim 1, characterized in that: It also includes an adhesive layer, and the FPC is bonded to the first surface of the film through the adhesive layer.

8. The waterproof circuit board and film binding structure according to claim 1, characterized in that: A connector is arranged at one end of the circuit board away from the binding end.

9. The waterproof circuit board and film binding structure according to claim 1, characterized in that: A hook extends from the second surface of the film sheet, and a latch for latching with the hook is arranged on the binding end of the circuit board.

10. The waterproof circuit board and film binding structure according to claim 9, characterized in that: The number of the hooks is two, the number of the slots on the circuit board is two, and the hooks are held in the slots.

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