Patent ID: 11881138
Assignee: SHANGHAI AVIC OPTOELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 3:
4. The drive circuit of claim 3, wherein the detection unit comprises a first switching device, a second switching device, a third switching device and a fourth switching device;
the first switching device is connected between a first power supply terminal and the first detection terminal, and a control terminal of the first switching device is electrically connected to the first node;
the second switching device is connected between the first power supply terminal and the second detection terminal, and a control terminal of the second switching device is electrically connected to the second node;
the third switching device is connected between a second power supply terminal and the first detection terminal, and a control terminal of the third switching device is electrically connected to the second node; and
the fourth switching device is connected between the second power supply terminal and the second detection terminal, and a control terminal of the fourth switching device is electrically connected to the first node.