Patent ID: 11942038
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. The pixel driving circuit according to claim 2, wherein in the first sampling stage, the second thin film transistor and the sixth thin film transistor are turned on, the first thin film transistor, the third thin film transistor and the fifth thin film transistor are turned off, the data signal is at low potential, the first supply voltage and the second supply voltage are at high potential, and a potential of the fourth node is a difference between absolute values of the second supply voltage and a threshold voltage of the fourth thin film transistor; and
in the second sampling stage, the first thin film transistor, the third thin film transistor, and the fifth thin film transistor are turned on, the second thin film transistor and the sixth thin film transistor are turned off, the data signal is at the low potential, the first supply voltage and the second supply voltage are at the high potential, and the potential of the fourth node is a difference between absolute values of the first supply voltage and the threshold voltage of the fourth thin film transistor.