Invention Grant
- Patent Title: Driving method, touch sensing circuit, display panel, and touch display device
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Application No.: US15387222Application Date: 2016-12-21
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Publication No.: US10572055B2Publication Date: 2020-02-25
- Inventor: MyungHo Shin
- 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: Birch, Stewart, Kolasch & Birch, LLP
- Priority: KR10-2016-0083114 20160630
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G02F1/1333 ; G06F3/044

Abstract:
Discussed are a driving method, a touch sensing circuit, a display panel, and a touch display device in which touch driving of driving touch electrodes using a multi-frequency driving method while modulating a frequency of a touch driving signal of a pulse type. The touch driving signal drives at least one touch electrode and senses a touch or a touch position in touch sections for a touch mode. Each of the touch sections for the touch mode includes k or more unit touch sections. The frequency of the touch driving signal output in at least one unit touch section is different from the frequency of the touch driving signal output in another unit touch section. Accordingly, it is possible to enable touch sensing and to suppress an EMI phenomenon which may occur due to the touch driving signal.
Public/Granted literature
- US20180004343A1 DRIVING METHOD, TOUCH SENSING CIRCUIT, DISPLAY PANEL, AND TOUCH DISPLAY DEVICE Public/Granted day:2018-01-04
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