Patent ID: 6023090
Filing Date: 2000-02-08
Classification: H01L

Abstract:
A lateral thin-film Silicon-On-Insulator (SOI) device comprising a semiconductor substrate, a buried insulating layer on said substrate, and a lateral MOS device on said buried insulating layer and having a source region of a first conductivity type formed in a body region of a second conductivity type opposite to that of the first, a lateral drift region of said first conductivity type adjacent said body region, a drain region of said first conductivity type and laterally spaced apart from said body region by said lateral drift region, and a gate electrode over a part of said body region in which a channel region is formed during operation and over at least a part of said lateral drift region adjacent said body region, said gate electrode being insulated from said body region and drift region by an insulation region, said lateral drift region comprising a plurality of spaced-apart zones of said second conductivity type separated by portions of said lateral drift region and extending horizontally in a lateral direction from said body region toward said drain region, said lateral drift region of the first conductivity type and said zones of the second conductivity type each having a varying charge level in said lateral direction.