Invention Grant
- Patent Title: Touch driving circuit and touch display device
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Application No.: US17978766Application Date: 2022-11-01
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Publication No.: US11762503B2Publication Date: 2023-09-19
- Inventor: HyeongWon Kang , Beom-Jin Kim
- 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: KR 20210175282 2021.12.09
- Main IPC: G06F3/041
- IPC: G06F3/041

Abstract:
Embodiments of the disclosure relate to a touch driving circuit and a touch display device. There may be provided a touch driving circuit capable of attenuating noise in the touch sensing signal and enhancing the output signal by the integrator by transferring charge through a sample-and-hold driving path and a bypass driving path, inverting the polarity of the charge sampled by the sampling switching block, and increasing the number of times of sampling. Further, as the amount of charge transferred by the offset voltage control switch included in the sample-and-hold driving path and bypass driving path may be adjusted within an offset voltage range, the performance of touch sensing may be enhanced.
Public/Granted literature
- US20230185403A1 Touch Driving Circuit and Touch Display Device Public/Granted day:2023-06-15
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