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

Claim 0:
1. A method for evaluating a Hot Carrier Injection (HCI) effect of a device, comprising:
acquiring a ratio of a substrate current to a drain current of a first device at different gate-source voltages, and recording the ratio as a first current ratio;
acquiring a ratio of a substrate current to a drain current of a second device at different gate-source voltages, and recording the ratio as a second current ratio, wherein the second device is subjected to a process parameter adjustment or a device parameter adjustment relative to the first device; and
determining an influence of the process parameter adjustment or the device parameter adjustment on an HCI effect of the device based on the second current ratio and the first current ratio.