Patent ID: 8686499

Claim:
A semiconductor device comprising: a semiconductor substrate of a first conduction type; a first region of a second conduction type provided in the semiconductor substrate; a second region of the first conduction type provided in the first region; an isolation region provided over first region of a surface of the semiconductor substrate and the second region of a surface of the semiconductor substrate, and having a first opening and a second opening provided in a direction, the first opening provided at the first region, the second opening provided at a part of a junction of the first region and the second region of a surface of the semiconductor substrate, and an other part of the junction covered by the isolation region; a gate electrode having a gate opening over the second region, provided over the isolation region and the second opening along the junction; and a drain region and a source region of the second conduction type provided in the first region of the first opening and the second region of the second opening, respectively, with a part of the gate electrode therebetween.