CPC H01L 27/1469 (2013.01) [H01L 27/14614 (2013.01); H01L 27/14634 (2013.01); H01L 27/14636 (2013.01); H01L 27/14643 (2013.01); H01L 27/14689 (2013.01)] | 20 Claims |
1. A device comprising:
a substrate;
a light sensitive element in the substrate;
a first pinning region in the substrate and over the light sensitive element;
a lightly-doped region in the substrate and over the light sensitive element, wherein the lightly-doped region is laterally adjacent the first pinning region;
a floating node in the first pinning region, the floating node being spaced from and surrounded by the lightly-doped region, wherein a first portion of the first pinning region is between the floating node and the lightly-doped region; and
a gate stack over the first portion of the first pinning region and the lightly-doped region, wherein the gate stack extends across a boundary between the first pinning region and the lightly-doped region.
|