Patent ID: 7960762
Filing Date: 2011-06-14
Classification: H01L,Y02E

Abstract:
1. A solid-state image sensor, comprising: a first conductivity-type semiconductor layer; a first conductivity-type pillar-shaped semiconductor layer overlying the first conductivity-type semiconductor layer; a second conductivity-type photoelectric conversion region formed on a top of the first conductivity-type pillar-shaped semiconductor layer, wherein an electric charge in the photoelectric conversion region is light-reactive; and a highly-concentrated impurity region of the first conductivity-type overlying a surface of the second conductivity-type photoelectric conversion region, the highly-concentrated impurity region being spaced apart from a top end of the first conductivity-type pillar-shaped semiconductor layer by a predetermined distance; a transfer electrode adjacent to a side of the first conductivity-type pillar-shaped semiconductor layer and separated therefrom by a gate insulating film; a second conductivity-type CCD channel region underlies the transfer electrode; and a read channel within the first conductivity-type pillar-shaped semiconductor layer in a region between the second conductivity-type photoelectric conversion region and the second conductivity-type CCD channel region.