Patent ID: 8670059
Filing Date: 2014-03-11
Classification: H01L,H04N

Abstract:
1. A photoelectric conversion device comprising: a p-type storage region; an n-type buried layer formed under said p-type storage region; an element isolation region; a channel stop region which is an n-type region and covers at least a lower portion of said element isolation region, wherein said p-type storage region and said buried layer form a photodiode, and a diffusion coefficient of a dominant impurity of said channel stop region is smaller than a diffusion coefficient of a dominant impurity of said buried layer; and a plurality of n-type barrier regions arranged at different depths from each other, and between said channel stop region and said n-type buried semiconductor region, wherein an upper one of said plurality of n-type barrier regions includes an impurity that said channel stop region also includes, and a lower one of said plurality of n-type barrier regions includes an impurity that said n-type buried semiconductor region also includes.