Patent ID: 11915767
Assignee: KEY FOUNDRY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 5:
6. The negative voltage switching device of claim 1,
wherein the second switching circuit comprises:
a third switching module connected to a second control signal terminal configured to apply a control signal to select one of the first negative voltage and the second negative voltage;
a fourth switching module connected to a first control signal terminal configured to apply a control signal to supply the first negative voltage or the second negative voltage to the switching selection circuit;
a fifth switching module connected to another negative voltage terminal different from a negative voltage terminal of the fourth switching module, and connected to the first control signal terminal; and
an eleventh N-type transistor configured to supply the second negative voltage to the switching selection circuit by turning on, when the second negative voltage is selected.