Patent ID: 6465820
Filing Date: 2002-10-15
Classification: H01L

Abstract:
A device formed in a substrate of a first conductivity type, the device comprising:a gated region that includes a gated part and a gate electrode insulatively spaced over the gated part; and a photo-diode region having proximal and distal sides, the proximal side being adjacent to the gated region, the photo-diode region including first, second and third diode sub-regions, the second diode sub-region being formed of a second conductivity type in the substrate, the third diode sub-region being formed of the first conductivity type in the second diode sub-region in the proximal side, the first diode sub-region being formed of the first conductivity type in the second diode sub-region in the distal side, a first dopant species constituting a highest concentration of any dopant species in both the first and third diode sub-regions, wherein the first and third diode sub-regions contain different dopant concentrations of the first dopant species.