Patent ID: 9425304
Filing Date: 2016-08-23
CPC Classification: H01L

Claim Text:
1. A semiconductor transistor structure, comprising: a substrate of a first conductivity type; an epitaxial layer adjacent to said substrate; a gate structure located above said epitaxial layer, a drain region of a second conductivity type within said epitaxial layer; a source region of said second conductivity type within said epitaxial layer; a body structure of said first conductivity type within said epitaxial layer at least partially formed under said gate structure and extending laterally under said source region; an electrically conductive trench-like feed-through element that passes through said epitaxial layer and contacts said substrate and passes through and contacts said source region; and a first tub region of said first conductivity type formed under said source region, and adjacent laterally to and in contact with said body structure, and wherein said first tub region is in contact with said trench-like feed-through element.