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

Claim 8:
9. A pixel driving method, applied to the pixel driving circuit according to claim 1, comprising:
in a first reset stage, controlling the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, the fifth thin film transistor, and the sixth thin film transistor to turn on, and controlling the data signal, the first supply voltage, and the second supply voltage to be at low potential;
in a first sampling stage, controlling the second thin film transistor and the sixth thin film transistor to turn on, and controlling the first thin film transistor, the third thin film transistor, and the fifth thin film transistor to turn off, and controlling the data signal to be at the low potential, the first supply voltage and the second supply voltage to be at high potential, to make a potential of the fourth node to be a difference between absolute values of the second supply voltage and a threshold voltage of the fourth thin film transistor;
in a first data writing stage, controlling the second thin film transistor to turn on, and controlling the first thin film transistor, the fifth thin film transistor, and the sixth thin film transistor to turn off, and controlling the third thin film transistor to turn on in a preset substage, and controlling the third thin film transistor to turn off outside the preset substage, and controlling the data signal, the first supply voltage and the second supply voltage to be at the high potential, to make the potential of the fourth node to be a sum of the difference between the absolute values of the second supply voltage and the threshold voltage of the fourth thin film transistor and the data signal;
in a first light-emitting stage, controlling the sixth thin film transistor to turn on, and controlling the first thin film transistor, the second thin film transistor, the third thin film transistor and the fifth thin film transistor to turn off, and controlling the first supply voltage to be at negative potential, and controlling the second supply voltage to be at the high potential, and controlling the data signal to be at the low potential, to make the first light-emitting device to emit light;
in a second reset stage, controlling the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, the fifth thin film transistor and the sixth thin film transistor to turn on, and controlling the data signal, the first supply voltage and the second supply voltage to be at the low potential;
in a second sampling stage, controlling the first thin film transistor, the third thin film transistor, the fifth thin film transistor to turn on, and controlling the second thin film transistor and the sixth thin film transistor to turn off, and controlling the data signal to be at the low potential, and controlling the first supply voltage and the second supply voltage to be at the high potential, to make the potential of the fourth node to be a difference between absolute values of the first supply voltage and the threshold voltage of the fourth thin film transistor;
in a second data writing stage, controlling the fifth thin film transistor to turn on, and controlling the first thin film transistor, the second thin film transistor and the sixth thin film transistor to turn off, and controlling the third thin film transistor to turn on in the preset substage, and controlling the third thin film transistor to turn off outside the preset substage, and controlling the data signal, the first supply voltage and the second supply voltage to be at the high potential, to make the potential of the fourth node to be a sum of the difference between the absolute values of the first supply voltage and the threshold voltage of the fourth thin film transistor and the data signal; and
in a second light-emitting stage, controlling the first thin film transistor to turn on, and controlling the second thin film transistor, the third thin film transistor, the fifth thin film transistor and the sixth thin film transistor to turn off, and controlling the first supply voltage to be at the high potential, and controlling the second supply voltage to be at the negative potential, and controlling the data signal to be at the low potential, to make the second light-emitting device to emit light.