Patent ID: 11862670
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A semiconductor device comprising:
a drift region having a first type conductivity, a doping concentration of the drift region ranging from 1×1016 atom/cm3 to 1×1017 atom/cm3;
a dielectric film;
an anti-type doping layer located between the drift region and the dielectric film, and having a second type conductivity opposite to the first type conductivity, a doping concentration of the anti-type doping layer ranging from 1×1018 atom/cm3 to 1×1019 atom/cm3; and
a drain area disposed within a portion of the drift region, the drain area having the first type conductivity and having a doping concentration higher than that of the drift region,
wherein the anti-type doping layer is disposed to entirely separate the drift region and the drain area from the dielectric film.