Invention Grant
- Patent Title: Touch sensing apparatus
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Application No.: US14983328Application Date: 2015-12-29
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Publication No.: US09733778B2Publication Date: 2017-08-15
- Inventor: Sangyong Lee , Kyungjin Jang , Jaekyu Park , Youngwoo Jo
- Applicant: LG Display Co., Ltd.
- Applicant Address: KR Seoul
- Assignee: LG Display Co., Ltd.
- Current Assignee: LG Display Co., Ltd.
- Current Assignee Address: KR Seoul
- Agency: Fenwick & West LLP
- Priority: KR10-2015-0093289 20150630
- Main IPC: H01L27/24
- IPC: H01L27/24 ; G06F3/044 ; G06F3/041 ; G09G3/20

Abstract:
A touch sensing circuit is configured to supply touch drive signals to electrodes of a touch sensitive display device and detect corresponding touch sense signals from the electrodes in response to the supplied touch drive signals, a touch sense signal indicating a change in self-capacitance of a driven electrode in response to a touch input on the driven electrode. The touch sensing circuit is further configured to integrate, for a first predetermined duration of time, a measure of each of the touch sense signals, to generate a first integrated signal corresponding to each touch sense signal; integrate, for a second predetermined duration of time, the first integrated signal, to generate a second integrated signal corresponding to each touch sense signal; and determine presence of one or more touch inputs on one or more of the electrodes based on the second integrated signal.
Public/Granted literature
- US20170003780A1 Touch Sensing Apparatus Public/Granted day:2017-01-05
Information query
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