Patent ID: 9324838
Filing Date: 2016-04-26
CPC Classification: H01L

Claim Text:
1. An electronic semiconductor device comprising: a semiconductor body having a first side and a second side opposite to one another along a first direction and including a first structural region, which faces the second side and has a first conductivity; and a second structural region which extends over the first structural region, faces the first side, and has a second conductivity opposite to the first conductivity; a body region having the second conductivity and extending in the second structural region at the first side; a source region having the first conductivity, extending within the body region and facing the first side; a drain region having the first conductivity and facing the first side of the semiconductor body; a gate electrode extending over a portion of the first side of the semiconductor body between the source region and the drain region; a first trench which extends through the second structural region and houses a trench dielectric region and a first trench conductive region; and a second trench which extends through part of the second structural region inside the body region, said second trench housing a second trench conductive region in electrical contact with the body region and with the source region, wherein the drain region extends through the second structural region, electrically contacts the first structural region, and is arranged between, and in direct contact with, the body region and the trench dielectric region, said first and second trench conductive regions being electrically coupled to one another.