公开(公告)号：US09599524B2

公开(公告)日：2017-03-21

申请号：US14245709

申请日：2014-04-04

Applicant: University of Utah Research Foundation

Inventor： Rajesh Surapaneni ,  Carlos H. Mastrangelo

IPC: G01L5/10 ,  G01L1/14 ,  G01L25/00 ,  G01L5/16

CPC classification number: G01L1/146 ,  G01L5/165 ,  G01L25/00

Abstract: A flexible tactile imager includes an array of sensing cells that measure shear force and normal force. The sensing cells include a first sub-cell and a second sub-cell. Each sub-cell includes multi-fingered capacitors configured to measure shear force in a first or second direction and to measure the normal force. The multi-fingered capacitors include a flexible printed circuit board, a comb-like fingered sense electrode and drive electrode patterned on a layer of the flexible printed circuit board, a deformable dielectric material positioned above the comb-like fingered sense and drive electrodes, the comb-like fingered floating electrode patterned above the deformable dielectric material, a first capacitance formed between the comb-like fingered sense electrode and the comb-like fingered floating electrode, and a second capacitance formed between the comb-like fingered drive electrode and the comb-like fingered floating electrode.