Patent ID: 6933575
Filing Date: 2005-08-23
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate of a first conductivity type; a well of the first conductivity type formed in the semiconductor substrate; a gate dielectric layer formed above the semiconductor substrate; a gate electrode formed above the gate dielectric layer; a source/drain layer of the second conductivity type formed in the semiconductor substrate, wherein the well of the first conductivity type comprises a channel region and is offset from the source/drain layer; a first well of the second conductivity type that is adjacent to the well of the first conductivity type on a first side, and that surrounds a first portion the source/drain layer; a second well of the second conductivity type that is adjacent to the well of the first conductivity type on a second side, and that surrounds a second portion of the source/drain layer.