Patent ID: 7638799
Filing Date: 2009-12-29
Classification: H01L

Abstract:
1. An image sensor structure comprising a plurality of pixels formed on a substrate, each pixel comprising: an image sensor interconnect structure, an etching stop layer, a separator layer and an electrode layer formed on the substrate in sequence, wherein the separator layer has a first thickness, a side wall of the separator layer is recessed from a side wall of the electrode layer by a first distance; and a first doped amorphous silicon layer formed on the electrode layer, wherein a first portion of the separator layer and a first portion of the first doped amorphous silicon layer of the pixel are disconnected from a second portion of the separator layer and a second portion of the first doped amorphous silicon layer of an adjacent pixel, and the a third portion of first and second portions of the first doped amorphous silicon layer is also formed directly on the etching stop layer between the first and second portions of the separator layer of two adjacent pixels without electrically connecting to the electrode layer.