Patent ID: 9508871
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A solid-state image sensing device including a plurality of pixels, comprising: a first semi-conducting layer of first conductivity; a second semi-conducting layer of first conductivity disposed on the first semi-conducting layer; a semiconductor region of second conductivity different from the first conductivity disposed in the second semi-conducting layer; a deep trench provided for each of the plurality of pixels and configured to isolate the neighboring pixels from each other; and an electrode implanted into the deep trench, wherein the semiconductor region of second conductivity, the second semi-conducting layer, and the first semi-conducting layer are disposed in that order from a proximal side to a distal side, the second semi-conducting layer is split by the deep trench into sections that correspond to the pixels, an impurity concentration of first conductivity of the first semi-conducting layer is higher than an impurity concentration of first conductivity of the second semi-conducting layer, and the deep trench contacts the first semi-conducting layer.