Patent ID: 11967283
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A display panel, comprising:
a plurality of pixel units, each pixel unit comprising:
a light-emitting device; and
a pixel drive circuit, comprising: a data input circuit, an energy storage circuit, a light-emitting control circuit, a first switch circuit, a second switch circuit, and a third switch circuit;
wherein
the data input circuit is in electrical connection with a control end of the light-emitting control circuit through the energy storage circuit, the data input circuit is configured to output a data voltage to the light-emitting control circuit, the energy storage circuit is configured to store electric energy, and the energy storage circuit comprises a capacitor;
an end of the first switch circuit is in electrical connection with the control end of the light-emitting control circuit, and another end of the first switch circuit is in electrical connection with an input of the light-emitting control circuit;
an end of the second switch circuit is in electrical connection with an output of the data input circuit, and another end of the second switch circuit is grounded;
the input of the light-emitting control circuit is in electrical connection with a first power supply, an output of the light-emitting control circuit is in electrical connection with an anode of the light-emitting device through the third switch circuit, the light-emitting control circuit is configured to output a driving current to the light-emitting device, and the driving current is independent from the capacitor;
a cathode of the light-emitting device is in electrical connection with a second power supply;
the first switch circuit and the second switch circuit are switched on in a reset phase, and are switched off in a writing phase and a light-emitting phase; and
the third switch circuit is switched off in the reset phase and the writing phase, and is switched on in the light-emitting phase; and
wherein the pixel drive circuit further comprises: a fourth switch circuit, and the first switch circuit and the light-emitting control circuit are in electrical connection with the first power supply through the fourth switch circuit.