Patent ID: 11887996
Assignee: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A pixel driving circuit for driving sub-pixels to emit light, comprising:
a first charging unit, wherein an input terminal of the first charging unit is configured for inputting a pre-charge voltage, and an output terminal of the first charging unit is connected to an energy storage capacitor, so as to charge the energy storage capacitor when the first charging unit is turned on;
a discharging unit, wherein a first terminal of the discharging unit is connected to the energy storage capacitor, and a second terminal of the discharging unit is connected to a ground, so as to discharge a voltage of the energy storage capacitor to a preset voltage when the discharging unit is turned on;
a second charging unit, wherein an input terminal of the second charging unit is configured for inputting a data voltage, and an output terminal of the second charging unit is connected to the energy storage capacitor, so as to charge the energy storage capacitor when the second charging unit is turned on; and
a driving transistor, wherein a first electrode of the driving transistor is configured for inputting a power supply voltage, a second electrode of the driving transistor is configured for connecting with the sub-pixels, and a gate electrode of the driving transistor is connected to the energy storage capacitor, so as to emit light through the sub-pixels when the energy storage capacitor discharges the gate electrode of the driving transistor.