Patent ID: 7510897

Claim:
A method of forming a photodiode for a pixel sensor cell, said method comprising: forming at least one field oxide region in a substrate; forming a transistor gate over said substrate and spaced apart from said at least one field oxide region; forming a first doped layer of a first conductivity type in said substrate; forming a photoresist layer over said transistor gate and said field oxide region; patterning said photoresist layer to form an opening extending between a location over said transistor gate and a location over said field oxide region; conducting a first implant through said opening to form a doped region of a second conductivity type in said first doped layer; and conducting an angled implant through said opening to form a second doped layer of said first conductivity type in said first doped layer, said second doped layer being located above said doped region at a surface region of said substrate.