Short circuit prevention connection structure of FPC board and PCB and camera module

Abstract

The utility model discloses a short circuit prevention connection structure of an FPC board and a PCB, which comprises the FPC board, the PCB and conductive adhesive, a plurality of PINs are arranged on the FPC board, and the PINs are electrically connected with an internal circuit of the FPC board. PINs corresponding to the FPC board are arranged on the PCB, and the PINs are electrically connected with an internal circuit of the PCB. According to the FPC board and the PCB, the PINs on the FPC board and the PCB are correspondingly bonded by being attached to the conductive adhesive, the conductive adhesive can only conduct electricity in the connection direction of the PINs of the FPC board and the PCB, so that the corresponding PINs are electrically connected, the other directions are insulated, short circuit between the non-corresponding PINs is prevented, product faults are avoided, and the use experience of a user is improved. In addition, the utility model also relates to a camera module.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, in particular to an anti-short circuit connection structure of an FPC board and a PCB board and a camera module. Background Art

[0002] As camera modules are used more and more widely, users have more and more diverse requirements for camera module structure design. In addition to the single use of FPC, PCB and RFPC, a composite design structure combining FPC and PCB will also be used. The traditional way to combine the two is through soldering with solder paste. This method requires special soldering tools, and the flow of solder paste will cause a short circuit between adjacent PIN pins, causing product failure. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and to provide an anti-short circuit connection structure between an FPC board and a PCB board and a camera module.

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

[0005] An anti-short circuit connection structure for an FPC board and a PCB board, comprising: an FPC board, a PCB board and a conductive adhesive; the FPC board is provided with a plurality of PIN pins, the PIN pins being electrically connected to internal circuits of the FPC board; the PCB board is provided with PIN pins corresponding to the FPC board, the PIN pins being electrically connected to internal circuits of the PCB board; the FPC board and the PCB board are respectively bonded to the PIN pins on the FPC board and the PCB board by laminating on the conductive adhesive, and the conductive adhesive is conductive only in the connection direction of the PIN pins of the FPC board and the PCB board.

[0006] In one embodiment, the PIN pins are respectively arranged on both sides of the FPC board and the PCB board.

[0007] In one embodiment, the number of the PIN pins is 22.

[0008] In one embodiment, the conductive adhesive is configured as a rectangular parallelepiped structure.

[0009] In one embodiment, the length of the PIN pin is 2 mm and the width is 1 mm.

[0010] In one embodiment, two positioning holes are provided on the PCB board.

[0011] In one embodiment, a component area is provided on the FPC board, and a reinforcing plate is provided on the back side of the component area.

[0012] In one embodiment, the reinforcement plate is a steel plate.

[0013] A camera module comprises the above-mentioned short-circuit-proof connection structure between an FPC board and a PCB board, and also comprises a base and a lens; the lens is mounted on the base, a soldering pad is provided on the PCB board, electronic components are welded on the soldering pad, and a side of the PCB board on which the electronic components are provided faces the interior of the base.

[0014] In one embodiment, the pad is spaced apart from the inner wall of the base by a distance greater than or equal to 0.5 mm.

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

[0016] The utility model discloses an anti-short circuit connection structure between an FPC board and a PCB board by providing an FPC board, a PCB board and a conductive adhesive. A plurality of PIN pins are provided on the FPC board, and the PIN pins are electrically connected to the internal circuits of the FPC board. The PCB board is provided with PIN pins corresponding to the FPC board, and the PIN pins are electrically connected to the internal circuits of the PCB board. The FPC board and the PCB board are respectively bonded to the corresponding PIN pins on the FPC board and the PCB board by laminating on the conductive adhesive. The conductive adhesive is conductive only in the connection direction of the PIN pins of the FPC board and the PCB board, so that the corresponding PIN pins are electrically connected, and the other directions are insulated, so as to prevent short circuits between non-corresponding PIN pins, which may cause product failures and improve the user experience. 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 structural schematic diagram of the anti-short circuit connection structure of the FPC board and the PCB board in one embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of an FPC board in an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a PCB board in one embodiment of the utility model;

[0021] Figure 4 The figure is a schematic diagram of the top view of the camera module in one embodiment of the utility model.

[0022] Reference numerals:

[0023] An anti-short-circuit connection structure 100 between an FPC board and a PCB board, an FPC board 10 , a PCB board 20 , a PIN pin 30 , a positioning hole 40 , a camera module 200 , a base 201 , and a lens 202 . DETAILED DESCRIPTION

[0024] 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.

[0025] This application proposes a short-circuit-proof connection structure between an FPC board and a PCB board. Figure 1 , Figure 2 and Figure 3 , including an FPC board 10, a PCB board 20 and a conductive adhesive. The FPC board 10 is provided with a plurality of PIN pins 30, and the PIN pins 30 are electrically connected to the internal circuits of the FPC board 10. The PCB board 20 is provided with PIN pins 30 corresponding to the FPC board 10, and the PIN pins 30 are electrically connected to the internal circuits of the PCB board 20. The FPC board 10 and the PCB board 20 are respectively bonded to the PIN pins 30 on the FPC board 10 and the PCB board 20 by laminating on the conductive adhesive. The conductive adhesive is conductive only in the connection direction of the PIN pins 30 of the FPC board 10 and the PCB board 20, so that the corresponding PIN pins 30 are electrically connected, and the other directions are insulated, so as to prevent short circuits between non-corresponding PIN pins 30, resulting in product failure, and improve the user experience.

[0026] It should be noted that the conductive adhesive is anisotropic conductive adhesive film, which connects electrodes between two surfaces using its own one-to-one conductive particles, so that the conductive adhesive is conductive in the Z-axis direction while avoiding short circuit between two adjacent electrodes.

[0027] In one embodiment, see Figure 2 and Figure 3 , PIN pins 30 are arranged on both sides of the FPC board 10, and the glue nozzle sprays the conductive glue on the PIN pins 30 of the FPC board 10, and the PCB board 20 is provided with PIN pins 30 corresponding to the PIN pins 30 on the FPC board 10. The staff or automated equipment fits the PCB board 20 on the FPC board 10, so that the FPC board 10 and the PCB board 20 fit and press, so that the PIN pins 30 on both sides of the FPC board 10 and the PCB board 20 are covered with conductive glue, thereby avoiding "false soldering", and the staff then uses a hot press to heat and solidify the conductive glue to ensure the reliability of the electrical connection. Further, the number of PIN pins 30 is 22, and 11 are respectively arranged on both sides of the PCB board 20 and the FPC board 10, which facilitates the fitting operation of the PCB board 20 and the FPC board 10, thereby improving the work efficiency and fitting accuracy of the alignment. Further, the length of the PIN pin 30 is 2mm and its width is 1mm.

[0028] In another embodiment, the conductive adhesive is set to a rectangular parallelepiped structure, which is flat, and the length and width are set according to the size of the PIN pin 30, and the height is 0.2mm, so that the bonding thickness of the FPC board 10 and the PCB board 20 is small, the structure is compact, and the volume is small. Further, in order to facilitate the fixing of the PCB board on the product, two positioning holes 40 are provided on the PCB board, and two positioning columns are provided on the product, and the two positioning holes 40 are sleeved on the positioning columns. Further, a component area is provided on the FPC board 10, and a reinforcing plate is provided on the back of the component area to provide support for the gravity of the component area and the components thereon to prevent the FPC board 10 from breaking. Preferably, the reinforcing plate is a steel plate.

[0029] See also Figure 1 and Figure 4 The present application proposes a camera module 200, including a base 201, a lens 202, and an anti-short-circuit connection structure 100 between an FPC board and a PCB board. Specifically, a housing cavity is provided on the base 201, the lens 202 is installed at the top of the housing cavity, and the anti-short-circuit connection structure 100 between an FPC board 10 and a PCB board 20 is installed at the bottom of the housing cavity. A soldering pad is provided on the PCB board 20, and the soldering pad is used to solder electronic components to improve the functions on the PCB board 20. Since the hardness of the PCB board 20 is greater than that of the FPC board 10, the side of the PCB board 20 where the electronic components are provided faces the inside of the base 201, and the PCB board 20 is connected to the base 201, and the size of the PCB board 20 is larger than that of the FPC board 10, providing support for the FPC board 10. The FPC board 10 and the PCB board 20 are respectively bonded to the corresponding PIN pins 30 on the FPC board 10 and the PCB board 20 by attaching them to the conductive adhesive. The conductive adhesive is only conductive in the connection direction of the PIN pins 30 of the FPC board 10 and the PCB board 20, so that the corresponding PIN pins 30 are electrically connected, and the other directions are insulated to prevent short circuits between non-corresponding PIN pins 30, resulting in product failures and improving the user experience. In addition, the pad is separated from the inner wall of the base 201 by more than or equal to 0.5mm to prevent the base 201 from being pressed on the PCB board 20, resulting in poor contact of electronic components and affecting the yield rate.

[0030] 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 short-circuit-proof connection structure between an FPC board and a PCB board, characterized in that: include: FPC board, PCB board and conductive adhesive; The FPC board is provided with a plurality of PIN pins, and the PIN pins are electrically connected to the internal circuits of the FPC board; The PCB board is provided with PIN pins corresponding to the FPC board, and the PIN pins are electrically connected to the internal circuits of the PCB board; the FPC board and the PCB board are respectively bonded to the PIN pins on the FPC board and the PCB board by laminating them on the conductive adhesive, and the conductive adhesive is conductive only in the connection direction of the PIN pins between the FPC board and the PCB board.

2. The anti-short circuit connection structure of the FPC board and the PCB board according to claim 1, characterized in that: The PIN pins are respectively arranged on both sides of the FPC board and the PCB board.

3. The anti-short circuit connection structure of the FPC board and the PCB board according to claim 1, characterized in that: The number of the PIN pins is 22.

4. The anti-short circuit connection structure of the FPC board and the PCB board according to claim 1, characterized in that: The conductive adhesive is arranged in a rectangular parallelepiped structure.

5. The anti-short circuit connection structure between the FPC board and the PCB board according to claim 1, characterized in that: The length of the PIN pin is 2 mm and the width is 1 mm.

6. The anti-short circuit connection structure between the FPC board and the PCB board according to claim 1, characterized in that: The PCB board is provided with two positioning holes.

7. The anti-short circuit connection structure between the FPC board and the PCB board according to claim 1, characterized in that: The FPC board is provided with a component area, and a reinforcing plate is provided on the back side of the component area.

8. The anti-short circuit connection structure between the FPC board and the PCB board according to claim 7, characterized in that: The reinforcing plate is a steel plate.

9. A camera module, comprising the anti-short circuit connection structure of the FPC board and the PCB board according to claims 1 to 8, characterized in that: Also includes a mount and lens; The lens is mounted on the base, the PCB is provided with pads, electronic components are welded on the pads, and a side of the PCB provided with the electronic components faces the interior of the base.

10. The camera module according to claim 9, characterized in that: The pad is spaced apart from the inner wall of the base by a distance greater than or equal to 0.5 mm.

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