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公开(公告)号：US09898149B2
公开(公告)日：2018-02-20
申请号：US14741940
申请日：2015-06-17
发明人： Sanghyub Kang , San-ho Byun , Jinchul Lee , Chadong Kim , Bumsoo Kim , Junchul Park , Hojin Park , Hyunkyu Ouh , Kyunghoon Lee , Michael Choi , YoonKyung Choi
IPC分类号： G06F3/044 , G06F3/041 , G06F1/16 , G06F3/01 , G06F3/0354
CPC分类号： G06F3/044 , G06F1/163 , G06F3/011 , G06F3/03547 , G06F3/0418 , G06F2203/0339 , G06F2203/04108
摘要： A touch analog front-end (AFE) for a touch sensitive screen may include a transmitter configured to charge a touch panel and a receiver configured to sense the touch panel. The receiver may include a charge-to-voltage (C2V) converter configured to convert a change of capacitance received from the touch panel into a voltage signal, a correlated double sampling (CDS) block configured to convert the voltage signal into a differential signal and to sample each of the positive and the negative signals of the differential signal, and an integrator configured to accumulate a difference between the sampled positive and negative signals.
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公开(公告)号：US10884556B2
公开(公告)日：2021-01-05
申请号：US16028754
申请日：2018-07-06
发明人： Chang-Ju Lee , Jaeho Park , YoonKyung Choi
IPC分类号： G06F3/045 , G06F3/044 , G09G3/36 , G06F3/041 , G09G3/3266 , G06F3/0488 , G09G3/20
摘要： Embodiments relate to a gate driving integrated circuit and an operating method thereof operating in a time-division method divided into a display period and a touch period. The gate driving integrated circuit includes a charging circuit, a gate control circuit, and a discharging circuit. The charging circuit charges a memory element. The discharging circuit discharges the memory element. The gate control circuit outputs a gate-on voltage to a gate line based on the charged memory element in during display period. The gate control circuit electrically disconnects the memory element from the gate control circuit during the touch period.
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公开(公告)号：US10705654B2
公开(公告)日：2020-07-07
申请号：US15675398
申请日：2017-08-11
发明人： Bumsoo Kim , Chadong Kim , Junchul Park , Kyeonggon Lee , YoonKyung Choi
摘要： An operating method of a touch driving integrated circuit (TDI) sensing a user touch on a touch panel includes: transmitting a first touch signal through a transmission line connected with the touch panel; receiving a first sensing signal through a reception line connected to the touch panel; receiving a first display noise through a detection line connected to the touch panel; and offsetting a noise included in the first sensing signal by using the first display noise.
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