Invention Grant
- Patent Title: Driving circuit and sensing unit thereof
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Application No.: US15707714Application Date: 2017-09-18
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Publication No.: US10452180B2Publication Date: 2019-10-22
- Inventor: SungYub Lee , HongChul Kim , YoungJoon Lee , Seongkyu Kang
- 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: KR10-2016-0122336 20160923
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/041 ; G02F1/1333 ; G02F1/1343 ; G06F3/044

Abstract:
Provided is a driving circuit included in a touch display device, which is capable of performing display driving, touch sensing, and additional sensing in addition to the touch sensing. The driving circuit includes a common electrode driving controller, a pixel electrode driving controller, and a sending unit. The common electrode driving controller is configured to apply a common voltage to a common electrode during a display-driving period. The pixel electrode driving controller is configured to apply a data voltage to a pixel electrode during the display-driving period. The sensing unit is connected to the common electrode driving controller during a first sensing period and to the pixel electrode driving controller during a second sensing period. The sensing unit is configured to sense a change in capacitance between the common electrode or pixel electrode and an object that is in contact with the display panel.
Public/Granted literature
- US20180088715A1 Driving Circuit and Sensing Unit Thereof Public/Granted day:2018-03-29
Information query