Patent ID: 6211555
Filing Date: 2001-04-03
Classification: H01L

Abstract:
A semiconductor device comprising:a substrate of a first conductivity type;a pair of field effect transistors formed in the substrate, wherein each transistor includes:(a) source and drain regions of a second conductivity type opposite the first conductivity type, wherein the source and drain regions include well-extension regions;(b) a channel region, wherein an area extending from the source region to the drain region defines a length of the channel; and(c) a gate electrode disposed above the channel region;wherein the gate electrode of a first one of the transistors is of the second conductivity type, wherein a portion of the gate electrode of the second one of the transistors is of the first conductivity type and extends above the entire length of the channel of the second transistor, and wherein the lengths of the channels of the first and second transistors are substantially the same.