公开(公告)号：US10393991B2

公开(公告)日：2019-08-27

申请号：US14784802

申请日：2014-04-21

Applicant: LG INNOTEK CO., LTD.

Inventor： Yong Jun Ko ,  Sang Won Seo ,  Jeong Gi Seo ,  Chul Kim ,  Don Han Jun ,  Wan Seop Choi

IPC: G02B7/02 ,  G02B26/08 ,  G02B26/00 ,  G02B7/09 ,  G02B7/08 ,  G03B3/10 ,  B81B7/02 ,  H02N1/00 ,  B81B3/00

Abstract: The disclosure provides a MEMS device including: a fixed substrate having a cavity; a driving unit disposed in the cavity and floating above the fixed substrate; and an elastic unit for physically connecting the fixed substrate with the driving unit and varying the height of the driving unit according to a control current, wherein the elastic unit includes a bimorph driving unit connected to the fixed substrate and bent according to the control current, a spring connected to the driving unit, and a frame connecting the bimorph driving unit to the spring. Therefore, in order to overcome the limitations according to the power consumption and the size-reduction due to a coil and a magnet, the MEMS device drives one lens and thus can reduce the power consumption and the size thereof.