Patent ID: 8115242

Claim:
A multicolor CMOS pixel sensor formed in a p-type semiconductor region, the multicolor CMOS pixel sensor including: a first detector for a first color formed from an n-type region of semiconductor material located near the surface of the p-type semiconductor region; a first pinned p-type region formed at the surface of the p-type semiconductor region over the first detector, a surface portion of the n-type region for the first detector extending past an edge of the pinned p-type region; a second detector for a second color formed from an n-type region located in the p-type semiconductor region below the first detector; a second-detector n-type deep contact plug in contact with the second detector and extending to the surface of the p-type semiconductor region; a second pinned p-type region formed at the surface of the p-type semiconductor region over the top of the second-detector n-type deep contact plug, a surface portion of the second-detector n-type deep contact plug extending past an edge of the second pinned p-type region; a third detector for a third color formed from an n-type region located in the p-type semiconductor region below the second detector; a third-detector n-type deep contact plug in contact with the third detector and extending to the surface of the p-type semiconductor region; a third pinned p-type region formed at the surface of the p-type semiconductor region over the top of the third-detector n-type deep contact plug near the surface of the p-type semiconductor region, a surface portion of the third-detector n-type deep contact plug extending past the edge of the pinned p-type region.