公开(公告)号：US11761830B2

公开(公告)日：2023-09-19

申请号：US17235664

申请日：2021-04-20

Applicant: PixArt Imaging Inc.

Inventor： Yen-Po Chen ,  Hao-Che Liu ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC: G01L1/00 ,  G01L1/14 ,  H05K1/11 ,  H05K1/03

CPC classification number: G01L1/144 ,  H05K1/0393 ,  H05K1/118 ,  H05K2201/10151

Abstract: There is provided a force sensor including a substrate and a polymer material layer. The substrate has a circuit layout that includes a first electrode and a second electrode configured to form a capacitor therebetween. The polymer material layer covers at least on a space between the first electrode and the second electrode, and is used to change capacitance of the capacitor while being pressed. The force sensor is arranged inside a stem of an earphone for detecting the user input.