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

Claim 5:
6. The pixel driving circuit according to claim 2, wherein in the first data writing stage, the second thin film transistor is turned on, the first thin film transistor, the fifth thin film transistor and the sixth thin film transistor are turned off, the third thin film transistor is turned on in a preset substage and the third thin film transistor is turned off outside the preset substage;
the data signal, the first supply voltage and the second supply voltage are at high potential, a potential of the fourth node is a sum of a difference between absolute values of the second supply voltage and a threshold voltage of the fourth thin film transistor and the data signal; and
in the second data writing stage, the fifth thin film transistor is turned on, the first thin film transistor, the second thin film transistor and the sixth thin film transistor are turned off, the third thin film transistor is turned on in the preset substage, the third thin film transistor is turned off outside the preset substage, the data signal, the first supply voltage and the second supply voltage are at the high potential, and the potential of the fourth node is a sum of a difference between absolute values of the first supply voltage and the threshold voltage of the fourth thin film transistor and the data signal.