Patent ID: 7205591
Filing Date: 2007-04-17
Classification: H01L

Abstract:
1. A pixel sensor cell comprising: a substrate including a gate structure formed on the substrate; a first doped region forming a collection well region of a first conductivity type beneath a surface of said substrate adjacent to a first side of said gate structure; a pinning layer of a second conductivity type formed atop said collection well layer at a surface of said substrate adjacent to said first side; a gate diffusion region of a first conductivity type formed adjacent a second side of said gate structure; a channel region of said gate structure for enabling charge transfer between said collection well region and said gate diffusion region; and a second doped region different than said first doped region forming a doped layer of said first conductivity type adjacent to said first side of said gate structure for coupling said collection well region and said channel region to reduce potential barrier interference to charge transfer caused by said pinning layer.