Patent ID: 9383856
Filing Date: 2016-07-05
CPC Classification: G06F

Claim Text:
1. A touch sensing circuit, comprising: a plurality of first channel circuits, each comprising: a first charge collecting circuit, having a first terminal connected to a second reset voltage; and a first sensing switch, coupled between a first sensor electrode and the first charge collecting circuit; wherein, the first sensor electrode is conducted to the first charge collecting circuit when the first sensing switch is closed; and a plurality of second channel circuits, each comprising: a second charge collecting circuit, having a second terminal connected to a first reset voltage; and a second sensing switch, coupled between a second sensor electrode and the second charge collecting circuit; wherein, the second sensor electrode is conducted to the second charge collecting circuit when the second sensing switch is closed, wherein time points at which the first sensing switch and the second sensing switch are closed are interleaved, wherein each first channel circuit further comprises a first reset switch coupled between the first electrode and the first reset voltage, and the first reset switch conducts the first reset voltage to the first sensor electrode when the first sensing switch is open, wherein the first reset switch turns on when the first sensing switch turns off, and the first sensing switch turns on when the first reset switch turns off, wherein each second channel circuit further comprises a second reset switch coupled between the second electrode and the second reset voltage; and the second reset switch conducts the second reset voltage to the second sensor electrode when the second reset switch is closed, and wherein a voltage value of the first reset voltage differs from a voltage value of the second reset voltage.