Patent ID: 9391116
Filing Date: 2016-07-12
CPC Classification: H01L

Claim Text:
1. An imaging apparatus comprising: a junction type field effect transistor provided in a semiconductor substrate, wherein the junction type field effect transistor includes a channel region of a first conductivity type, a source region of the first conductivity type, a first gate region of a second conductivity type, a second gate region of the second conductivity type, a third gate region of the second conductivity type and a fourth gate region of the second conductivity type, the first gate region and the second gate region are disposed in a direction along a surface of the semiconductor substrate, the third gate region and the fourth gate region are disposed in the direction along the surface of the semiconductor substrate, the first gate region and the third gate region are disposed in a depth direction of the semiconductor substrate, the first gate region is disposed between the surface and the third gate region, the second gate region and the fourth gate region are disposed in the depth direction, the second gate region is disposed between the surface and the fourth gate region, the channel region includes a first region which is disposed between the first gate region and the third gate region and a second region which is disposed between the second gate region and the fourth gate region, the source region is disposed between the first gate region and the second gate region, and a semiconductor region of the second conductivity type having an impurity density which is lower than an impurity density of the third gate region and is lower than an impurity density of the fourth gate region is disposed between the third gate region and the fourth gate region.