Patent ID: 11876093
Assignee: RICHTEK TECHNOLOGY CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The power device of claim 4, wherein the first N-type extension region and the second N-type extension region are formed simultaneously via a same lithography process step and a same ion implantation process step;
wherein the first P-type well and the second P-type well are formed simultaneously via a same lithography process step and a same ion implantation process step;
wherein the reverse terminal and the emitter are formed simultaneously via a same lithography process step and a same ion implantation process step;
wherein the first gate and the second gate are formed simultaneously via a same gate formation process;
wherein the first field oxide region and the second field oxide region are formed simultaneously via a same oxidation process step.