Patent ID: 11881183
Assignee: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A display panel, comprising a switching element, a power management integrated circuit and an overvoltage protection device, wherein:
the overvoltage protection device comprises an overvoltage protection circuit connected to a power supply and a switching element provided between a power management integrated circuit and the power supply, wherein:
the overvoltage protection circuit comprises an overvoltage detection circuit and an overvoltage count circuit;
the overvoltage detection circuit is connected to the power supply and the overvoltage count circuit, and the overvoltage count circuit is connected to the switching element;
the overvoltage detection circuit is for detecting a power supply voltage output by the power supply and outputting an overvoltage signal to the overvoltage count circuit when the power supply voltage is in an overvoltage state; and
the overvoltage count circuit is for outputting a cutoff signal to the switching element when accumulated times for receiving overvoltage signals reach preset times, to control the switching element to disconnect the power supply from the power management integrated circuit; and

the power management integrated circuit is connected to the power supply through the switching element, and the overvoltage protection device is respectively connected to the power supply and the switching element.