Patent ID: 9276027
Filing Date: 2016-03-01
CPC Classification: H01L

Claim Text:
1. A solid-state image sensor comprising: a semiconductor substrate; a first semiconductor region of a first conductivity type arranged in the semiconductor substrate; a second semiconductor region of a second conductivity type constituting a charge accumulation region of a pixel, and being arranged in the first semiconductor region; and a lens for condensing light to the second semiconductor region, wherein the second semiconductor region includes a first portion and a second portion which are arranged in a first direction parallel to a surface of the semiconductor substrate, a potential barrier to a charge accumulated in the charge accumulation region is formed between the first portion and the second portion, an interval between the first portion and the second portion is within a range from 0.1 μm to 1.0 μm, a size of the pixel along the first direction is within a range from 2.0 μm to 7.0 μm, and a size of the first portion along a second direction parallel to a depth direction of the semiconductor substrate is larger than a size of the first portion along the first direction, and a size of the second portion along the second direction is larger than a size of the second portion along the first direction.