公开(公告)号：US20180173361A1

公开(公告)日：2018-06-21

申请号：US15386249

申请日：2016-12-21

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Hugo Gicquel ,  Leonard Liviu Dinu

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044

Abstract: Disclosed herein is an electronic device including a display layer generating display noise based on scanning thereof and a sensing layer including a plurality of sense lines. The display noise is capacitively coupled from the display layer to each of the plurality of sense lines of the sensing layer. A differential charge converter circuit has first and second differential inputs respectively coupled to corresponding ones of the plurality of sense lines, and first and second reference inputs. The first and second reference inputs of the differential charge converter circuit are coupled to voltage references during a reset period, and are decoupled from the voltage references during a scan period.