Patent ID: 7923750
Filing Date: 2011-04-12
Classification: H01L

Abstract:
1. A pixel sensor cell comprising: a semiconductor substrate including a photoactive region laterally separated from a floating diffusion region by a channel region, the channel region including at least one gate conductor; a first gate dielectric layer being present on an upper surface of the semiconductor substrate at least overlying the photoactive region and disposed between the at least one gate conductor and the channel region of the semiconductor substrate; a second gate dielectric layer being present on a portion of the first gate dielectric layer that is overlying the photoactive region and is present overlying the channel region on an upper surface of the at least one gate conductor, wherein the second gate dielectric layer is a single layer extending from the photoactive region to the channel region of the substrate; and at least one optically transparent gate conductor located upon the second gate dielectric layer and also at least in-part over the channel region.