Patent ID: 8189083

Claim:
A solid-state imaging device comprising: a semiconductor substrate having a pixel region including a photoelectric conversion portion that produces an electrical signal by photoelectric conversion of incident light and a peripheral circuit region around the pixel region; a wiring portion including a conductor line, the wiring portion disposed on the semiconductor substrate with an insulating film therebetween, the wiring portion having an opening therein over the photoelectric conversion portion; a metal pad connected to the conductor line; a pad-coating insulating film coating the metal pad, the pad-coating insulating film having an opening over the photoelectric conversion portion, the opening defined by a face and the opening thereof continuing from the opening of the wiring portion to define a waveguide opening having an open side and a closed side; and a waveguide material layer disposed in the waveguide opening and on the pad-coating insulating film with a passivation layer therebetween, wherein, the pad-coating insulating film has a thickness in the range of 50 to 250 nm, and the face of the pad-coating insualting film defining the opening is slanted so as to diverge toward the open side of the waveguide opening.