Patent ID: 9224823
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. A semiconductor apparatus comprising: a drain region of a first conductivity type; a drain electrode electrically coupled to the drain region; a semiconductor layer of the first conductivity type formed onto the drain region, the semiconductor layer having a first impurity concentration; a source region of the first conductivity type formed on the semiconductor layer, the source region having a second impurity concentration greater than the first impurity concentration; a first source electrode electrically coupled to the source region; a gate electrode formed via an insulating layer, the gate electrode having one end and another end, the one end being in a depth of the source region, and the other end being in a depth of the semiconductor layer or the drain region; a second source electrode provided in the semiconductor layer under the gate electrodes via an insulating layer; a first portion extending downward from a surface of the semiconductor layer to have a first depth, the first portion interiorly including the gate electrode and including the second source electrode under the gate electrode; and a second portion extending downward from a surface of the semiconductor layer to have a second depth smaller than the first depth, the second portion interiorly including the gate electrode alone, wherein a second spacing in between a plurality of the second source electrodes is configured larger than a first spacing in between a plurality of the gate electrodes.