Spring-type FPCB for camera module and camera module with built-in spring-type FPCB

By using elastic connecting strips and signal transmission components made of polymer resin and metal, the problems of friction and electrical short circuits of springs in optical hand shake correction devices are solved, achieving a camera module with durability and flexible circuit design.

CN121420239APending Publication Date: 2026-01-27JAEYOUNG SOLUTEC
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Patent Information

Application Number
CN202380099779.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-06-28
Filing Date
2023-08-30
Publication Date
2026-01-27

AI Technical Summary

Technical Problem

In existing optical shake correction devices, the spring is prone to foreign object generation and electrical short circuits due to friction with surrounding components, and its durability is poor, making it difficult to apply effectively in compact portable electronic devices.

Method used

The elastic connecting strip and signal transmission components, made of polymer resin and metal, are used to form a thin film-like substrate and cover sheet. The bending part is combined to elastically support the lens module, realize the transmission of electrical signals, and avoid friction and electrical short circuits through the design of the bending part.

Benefits of technology

It improves the durability of the camera module, avoids foreign object generation and electrical short circuits, and allows for more flexible circuit pattern design, enhancing the reliability of the hand shake correction function.

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Abstract

The present invention relates to a spring-type FPCB for a camera module and a camera module having a built-in spring-type FPCB. A spring-type FPCB for a camera module, which elastically supports a lens module carrier in a state in which the camera module is housed, the camera module including a housing and a lens module carrier which is provided in the housing so as to be adjustable in position and accommodates a lens module, the spring-type FPCB for a camera module including: an elastic connecting band which is provided in the housing so as to connect the lens module carrier to the housing; the connecting piece has a specified thickness, can be elastically deformed, and extends along the length direction to connect the shell and the lens module carrier; and a signal transmission member which is accommodated inside the elastic connection band and guides an electric signal applied from the outside to the lens module carrier. The spring-type FPCB for a camera module according to the present invention, which is configured as described above, has a polymer film-coated structure, so that even if used for a long period of time, foreign matter is not generated due to friction with peripheral members, and there is no need to worry about the occurrence of an electrical short circuit. In addition, the fatigue life is long, breakage cannot occur even after long-term use, and the durability is good. Furthermore, in the camera module of the present invention, a leaf spring relating to the movement of the lens module is implemented by a spring-type FPCB, so that an AF carrier or an OIS carrier can be more effectively controlled by diverse design of a circuit pattern of the FPCB.
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