Patent ID: 9711640
Date: 2017-07-18
CPC Classifications: H01L

Claim:
1. A vertical conduction integrated electronic device comprising: a semiconductor body; a trench that extends through part of the semiconductor body and delimits a portion of the semiconductor body, said portion of the semiconductor body forming a first conduction region having a first type of conductivity and a body region having a second type of conductivity, which is arranged on top of the first conduction region; a gate region of conductive material, which extends within the trench; an insulation region of dielectric material, which extends within the trench and is arranged between the gate region and the body region; and a second conduction region, arranged on top of the body region, wherein the second conduction region is made of an undoped conductor, wherein the insulation region includes a lateral surface that contacts the body region; said device further comprising a spacer of dielectric material, which coats a top portion of said lateral surface and contacts a peripheral portion of the body region, said spacer further surrounding a central portion of the second conduction region arranged in contact with a central portion of the body region.