Patent ID: 6338978
Filing Date: 2002-01-15
Classification: H01L,Y02E

Abstract:
A method for fabricating a solid state image sensor comprising:preparing a semiconductor substrate of a first conductivity type, in which photoelectric conversion regions are defined; forming a well of a second conductivity type in a surface of the semiconductor substrate; forming a plurality of first impurity regions of the first conductivity type in the well in the photoelectric conversion regions; forming a plurality of vertical charge transfer regions in one direction in the well between the photoelectric conversion regions; forming a gate insulating film on the semiconductor substrate; forming a plurality of transfer gates on the gate insulating film over each of the vertical charge transfer regions; forming a first insulating film on a surface of each transfer gate; forming a plurality of second impurity regions of the second conductivity type in a surface of the first impurity regions; forming a second insulating film at sides of the first insulating film; selectively removing the exposed gate insulating film; forming a light-shielding layer on the first and second insulating films, the light-shielding layer being connected with the photoelectric conversion devices; and forming a third insulating film on the light-shielding layer including each of the photoelectric conversion devices.