Telescopic structure, forming method, driving method, electronic equipment and camera module

Abstract

The invention discloses a telescopic structure, a forming method, a driving method, an electronic device and a camera module. The telescopic structure comprises a first actuator and a second actuator. The first actuator comprises a first lower electrode, a first piezoelectric film located on the first lower electrode, a first upper electrode located on the first piezoelectric film and a first non-stretching layer; the second actuator is suspended on the first actuator and comprises a second lower electrode, a second piezoelectric film located on the second lower electrode, a second upper electrode located on the second piezoelectric film and a second non-stretching layer; the first non-stretching layer is located above the first upper electrode, and the second non-stretching layer is located below the second lower electrode. When the telescopic structure works, the first piezoelectric film and the second piezoelectric film stretch out and draw back in the transverse direction, the first non-stretching layer and the second non-stretching layer do not stretch out and draw back in the transverse direction, the first piezoelectric film and the second piezoelectric film warp in the opposite directions, and therefore the warp amount of the first piezoelectric film and the warp amount of the second piezoelectric film in the longitudinal direction offset each other. The transverse distance between the two ends of the extending direction of the second actuator is shortened.

Description

technical field [0001] The invention relates to the field of photoelectric imaging, in particular to a telescopic structure and a forming method, a driving method, electronic equipment, and a camera module. Background technique [0002] With the improvement of user requirements and the iterative update of terminal equipment, the integration level of current terminal equipment is getting higher and higher, followed by more and more functional devices integrated in terminal equipment. A more prominent manifestation is that the number of camera modules on current terminal equipment is increasing. Different types of camera modules can meet different shooting needs of users. For example, the focus camera module can satisfy the focus shooting during the shooting process, and the fixed-focus camera module can meet the user's fixed-focus shooting. [0003] At present, users have higher demands on the appearance and performance of terminal equipment, and it is the current mainstrea...

AI Technical Summary

Problems solved by technology

The large size of the zoom motor leads to a large overall size of the entire focusing camera module, which is not conducive to the design of terminal equipment in a thinner direction.

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