Patent ID: 11972734
Assignee: GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A display panel, comprising:
a plurality of sub-pixels arranged in an array, each of the sub-pixels comprising:
a light emitting device, comprising a cathode electrically connected to a common node, and an anode; and
a pixel driving circuit, comprising:
a driving transistor, wherein one of a source and a drain of the driving transistor is connected to an anode of the light emitting device, and another one of the source and the drain of the driving transistor is electrically connected to a first voltage terminal;
a data transistor, comprising a source and a drain, both electrically connected between corresponding one of data lines and a gate of the driving transistor;
a first capacitor, connected between the first voltage terminal and the anode of the light emitting device; and
a second capacitor, connected between the gate of the driving transistor and the anode of the light emitting device; and

a voltage conversion module comprising a plurality of voltage switching circuits, wherein each of the voltage switching circuits is electrically connected to light emitting devices of a plurality of sub-pixels in the same row via the common node, and each of the voltage switching circuits is configured to output a first voltage or a second voltage to the common node;
wherein the voltage conversion module is configured to control a potential of the common node to change from the first voltage to the second voltage less than the first voltage before the driving transistor drives the light emitting device to emit light.