Patent ID: 11862676
Assignee: CHINA RESOURCES MICROELECTRONICS (CHONGQING) CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. The method according to claim 13, wherein the doping body regions with dopants with the first conductivity type and dopants with the second conductivity type to respectively form the first doped region and the second doped region, specifically comprises:
doping the upper surface layer of the body region with dopants with the first conductivity type to form the first doped region in contact with the first trench and the second trench;
forming a contact hole penetrating the first doped region and exposing the body region; and
doping the exposed body region with dopants with the second conductivity type through the contact hole to form the second doped region, and the first electrode is respectively electrically connected to the first doped region and the second doped region through the contact hole.