Patent ID: 6960807
Filing Date: 2005-11-01
Classification: H01L

Abstract:
1. A drain-extended transistor, formed at a semiconductor surface of a body, comprising: a first source region of first conductivity type, and disposed at a region of the surface having a second conductivity type; an insulating structure disposed at the surface near the first source region, and disposed over a portion of a lightly-doped region of the first conductivity type to define a drift region thereunder; at least one drain region of the first conductivity type disposed in the lightly-doped region and spaced from the first source region by a first isolation structure; a plurality of channel regions of the second conductivity type disposed adjacent the first source region in the region of the surface having the second conductivity type, and disposed between the first source region and the at least one drain region; at least one isolation structure disposed between adjacent ones of the plurality of channel regions; at least one doped region of the second conductivity type, each underlying a corresponding isolation structure; and a gate electrode disposed over the plurality of channel regions, over the at least one isolation structure, and over at least a portion of the drift region.