Patent ID: 9236410
Filing Date: 2016-01-12
CPC Classification: H01L,H04N

Claim Text:
1. A solid-state image pickup device comprising: a photoelectric conversion portion disposed in a semiconductor substrate, a first transfer transistor configured to transfer carriers generated in the photoelectric conversion portion, a carrier holding portion configured to hold the carriers transferred from the photoelectric conversion portion, a second transfer transistor configured to transfer the carriers in the carrier holding portion to a floating diffusion portion, an amplification transistor configured to output a signal based on a potential of the floating diffusion portion; a first insulating film disposed above the photoelectric conversion portion, and the floating diffusion portion; a second insulating film disposed between the photoelectric conversion portion and the first insulating film, and the second insulating film being made of a different material from that of the first insulating film; a contact plug disposed in an opening of the first insulating film and connected to a drain of the second transfer transistor, the contact plug having a top surface and a bottom surface which is closer to the substrate than the top surface; and a light shielding film disposed in an opening of the first insulating film and positioned above the carrier holding portion, wherein a bottom surface of the light shielding film contacts with the second insulating film, and wherein the bottom surface of the light shielding film is positioned closer to the substrate than the top surface of the contact plug.