Patent ID: 8138531
Filing Date: 2012-03-20
Classification: H01L

Abstract:
1. A pixel sensor cell, comprising: a photodiode body in a first region of a semiconductor layer; a floating diffusion node in a second region of said semiconductor layer, a third region of said semiconductor layer between and abutting said first and second regions; and dielectric isolation in said semiconductor layer, said dielectric isolation surrounding said first, second and third regions, said dielectric isolation abutting said first, second and third regions of said photodiode body, said dielectric isolation not abutting said floating diffusion node, portions of said second region intervening between said dielectric isolation and said floating diffusion node; and a dielectric passivation layer abutting said dielectric isolation in said second region, said dielectric isolation passivation not abutting said floating diffusion node, portions of said second region intervening between said dielectric passivation layer and floating diffusion node.