Patent ID: 11861089
Assignee: NOVATEK MICROELECTRONICS CORP.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A driving circuit configured to drive a touch display panel comprising sensor pads, and the driving circuit comprising:
a signal generating circuit, configurable to be coupled to gate lines of the touch display panel via a gate control circuit, and configured to modulate a plurality of voltage signals on a first driving signal and a second driving signal, and provide the modulated first driving signal and the modulated second driving signal to the gate control circuit to drive the gate lines during a sensing period; and
a sensor driving circuit, configurable to be coupled to the sensor pads of the touch display panel, and configured to modulate the voltage signals on a third driving signal, and drive the sensor pads with the modulated third driving signal during the sensing period,
wherein the sensor pads are grouped into active sensor pads and non-active sensor pads, and the sensor driving circuit comprises:
a signal modulation circuit, configurable to be coupled to the sensor pads, wherein the signal modulation circuit comprises:
a plurality of third modulation channels, configurable to be coupled to the active and non-active sensor pads, receiving the voltage signals, and modulating the voltage signals on the third driving signal,
wherein the third modulation channels coupled to the non-active sensor pads sequentially transmit the voltage signals to the touch display panel, and
wherein the third modulation channels coupled to the active sensor pads transmit sensing signals to a determination circuit.