Patent ID: 6346722
Filing Date: 2002-02-12
Classification: H01L

Abstract:
A solid state imaging device comprising:a semiconductor substrate having a first conductivity type, a first layer having a second conductivity type opposite to said first conductivity type, a charge storing layer formed on a top of said first layer and having said first conductivity, a second layer formed on a top of said charge storing layer and having said second conductivity type, said charge storing layer and said second layer forming a junction of a photodiode, a charge transfer channel formed adjacent to said charge storing layer, an isolation region having said second conductivity, sides of said charge storing layer being in contact with said isolation region except for a side adjacent to said charge transfer channel, and an additional implant area comprising impurity ions, the implant area being arranged to overlap said charge storing layer so that the impurity ions are present in the charge storing layer only along a perimeter of the charge storing layer.