Patent ID: 8987852
Filing Date: 2015-03-24
Classification: H01L

Abstract:
1. A method for manufacturing a solid-state image pickup apparatus including (a) a first photoelectric conversion portion disposed in a semiconductor substrate, (b) a second photoelectric conversion portion disposed in the semiconductor substrate, (c) a first gate electrode disposed above the semiconductor substrate, (d) a second gate electrode disposed above the semiconductor substrate, (e) a first insulating film functioning as an antireflection film and extending over the first photoelectric conversion portion, the second photoelectric conversion portion, the first gate electrode, and the second gate electrode, (f) a second insulating film disposed on the first insulating film over the first photoelectric conversion portion and the first gate electrode, (g) an another second insulating film disposed on the first insulating film over the second photoelectric conversion portion and the second gate electrode, and separated from the second insulating film, (h) a first waveguide having a clad and a core, and (i) a second waveguide having a clad and a core, the method comprising: forming openings by partially etching a member disposed over the first photoelectric conversion portion and the second photoelectric conversion portion under a condition that etching speed when the member is etched is faster than etching speed when the second insulating film and the another second insulating film are etched, the openings exposing the second insulating film and the another second insulating film, for forming the clad, and forming the cores in the openings, the cores disposed on the second insulating film and the another second insulating film, wherein the second insulating film has an edge arranged above the first gate electrode, and the another second insulating film has an edge arranged above the second gate electrode.