Patent ID: 6969631

Claim:
A method of forming a photodiode for a pixel sensor cell, said method comprising the acts of: forming at least one isolation region in a substrate; forming a gate of a transistor over said substrate, said gate being spaced apart from said at least one isolation region; forming a first doped layer of a first conductivity type in said substrate; forming a doped region of a second conductivity type in said doped layer; and forming a second doped layer of said first conductivity type in said substrate by implanting ions of said first conductivity type at an incidence angle with said substrate different than a zero degree angle in an area of said substrate defined between said gate and said at least one isolation region, said gate acting as an implant mask for said incidence angle, said second doped layer being in contact with said isolation region and being displaced laterally from an electrically active portion of said gate by a distance of about 100 to about 2,500 Angstroms.