Patent ID: 11915650
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. The sensing circuit of claim 7, wherein, in the first capacitor initialization period, the sampling signal, the reference signal and the channel connection signal have an active level,
wherein the second sampling switch is turned on in response to the sampling signal having the active level, the channel connection switch is turned on in response to the channel connection signal having the active level, the initialization voltage is applied to the first electrode of the reference capacitor through the second sampling switch, and the initialization voltage is applied to the first electrode of the sampling capacitor through the second sampling switch and the channel connection switch, and
wherein the first reference switch and the second reference switch are turned on in response to the reference signal having the active level, the reference voltage is applied to the second electrode of the sampling capacitor through the first reference switch, and the reference voltage is applied to the second electrode of the reference capacitor through the second reference switch.