Display device configured to operate display drive and touch sensing in time sharing manner and semiconductor device to be employed thereon

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United States of America Patent

PATENT NO 10372248
APP PUB NO 20180107309A1
SERIAL NO

15297540

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Abstract

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The semiconductor device is intended for connection with an in-cell type display touch panel having a plurality of common electrodes, a reference voltage for display is applied to the common electrodes in a display drive period, and the common electrodes serve as sensor electrodes in a touch detection period. The semiconductor device includes a DC level shift circuit operable to shift the DC level of a toggle signal output by a toggle drive circuit to the reference voltage. The semiconductor device supplies the reference voltage to the common electrodes of the display touch panel in the display drive period, and performs a guarding action in which at least a part of the plurality of common electrodes is supplied with a toggle signal shifted in DC level in the touch detection period.

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Patent Owner(s)

  • SYNAPTICS INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Kazuya Tokyo, JP 24 286
Hirakawa, Tomohiro Tokyo, JP 13 112
Nohtomi, Shinobu Tokyo, JP 11 47
Noto, Takayuki Tokyo, JP 38 238
Shepelev, Petr Campbell, US 108 1616
Takeyama, Hiroshi Tokyo, JP 11 85
Tanaka, Nobukazu Tokyo, JP 39 286

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