公开(公告)号：US20170249030A1

公开(公告)日：2017-08-31

申请号：US15056107

申请日：2016-02-29

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Dylan Park ,  Jerry Kim

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F2203/04105

Abstract: The present disclosure provides a capacitive sensing structure for detecting a force touch in a touchscreen application. Performance uniformity of the force touch sensor is improved by providing a capacitive force touch structure having sensing electrodes of varying thickness, wherein the variation in electrode thickness corresponds to a relative displacement potential of portions of the sensing electrode. This variation in thickness improves performance uniformity of the force sensor by compensating for the displacement potential (i.e., flexibility) of the sensing electrodes so that a force touch applied to the touch surface is measured consistently regardless of the location of the force touch on the touch surface.

公开(公告)号：US20180173357A1

公开(公告)日：2018-06-21

申请号：US15384494

申请日：2016-12-20

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Dylan Park ,  John Serge Georges Nankoo

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F2203/04101 ,  G06F2203/04111

Abstract: The present disclosure provides a capacitive sensing structure for detecting a force touch in a touchscreen application. Performance uniformity of the force touch sensor is improved by providing a capacitive force touch structure having dot-pattern sensing electrodes of varying thickness, wherein the variation in electrode thickness corresponds to a relative displacement potential of portions of the sensing electrode. This variation in thickness improves performance uniformity of the force sensor by compensating for the displacement potential (i.e., flexibility) of the sensing electrodes so that a force touch applied to the touch surface is measured consistently regardless of the location of the force touch on the touch surface.