Patent ID: 11942942
Assignee: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO., LTD
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The level shifter of claim 5 wherein the first voltage-tolerant transistor and the second voltage-tolerant transistor each comprise a Lateral-Diffusion Metal-Oxide-Semiconductor (LDMOS) having an N-drift region formed by a lateral diffusion process step;
wherein the N-drift region is formed under a transistor gate and between a source and a conduction channel under the transistor gate;
wherein the N-drift region is not present in n-channel transistors having the standard-n source-drain breakdown voltage;
wherein the N-drift region provides the enhanced source-drain breakdown voltage that is greater than the standard-n source-drain breakdown voltage.