Patent ID: 7061030
Filing Date: 2006-06-13
Classification: H01L

Abstract:
1. A semiconductor device comprising: a transfer channel for transferring charge generated by photoelectric conversion; a first insulating film formed on the transfer channel; a second insulating film formed on the first insulating film; and a transfer electrode for applying a transfer voltage to the transfer channel via the first and second insulating films, wherein a first part of the second insulating film has a first thickness and a second part of second insulating film has a second thickness, the second thickness being thinner than the first thickness, the first part of the second insulating film is located below both ends of the transfer electrode in a width direction of the transfer channel, the width direction being orthogonal to a charge transfer direction through the transfer channel, the second part of the second insulating film is located on a center of the transfer channel in the width direction, the first insulating film is a silicon oxide film, and the second insulating film is thicker than the first insulating film.