公开(公告)号：US09779676B2

公开(公告)日：2017-10-03

申请号：US14639406

申请日：2015-03-05

Applicant: APPLE INC.

Inventor： Ahmad Al-Dahle ,  Yingxuan Li ,  Marduke Yousefpor ,  Weijun Yao

IPC: G09G3/36 ,  G06F3/044 ,  G06F3/041

CPC classification number: G09G3/3648 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04105 ,  G06F2203/04106 ,  G06F2203/04107 ,  G09G2354/00

Abstract: Systems and method of performing touch and force sensing in an electronic device. The device includes a cover and an array of touch-sensor electrodes disposed below the cover. The first array of electrodes may be configured to sense a touch on the cover using a capacitive sensing scheme. The device also includes a force-sensor drive electrode disposed below the first array of electrodes and a force-sensor sense electrode disposed below the force-sensor drive electrode. The force-sensor drive and sense electrode may be configured to sense a force on the cover. The device also includes a shared drive circuit having an output that is operatively coupled to the array of touch-sensor electrodes and the force-sensor drive electrode.