Patent ID: 11860220
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 3:
4. The method for evaluating the HCI effect of the device of claim 1, wherein in a process of acquiring the ratio of the substrate current to the drain current of the first device at the different gate-source voltages, a source-drain voltage of the first device is set as VCC, both a source and a substrate of the first device are grounded, and the gate-source voltage of the first device is between 0 and VCC; and in a process of acquiring the ratio of the substrate current to the drain current of the second device at the different gate-source voltages, a source-drain voltage of the second device is set as VCC, both a source and a substrate of the second device are grounded, and the gate-source voltage of the second device is between 0 and VCC.