Patent ID: 9224777
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. A method for manufacturing a solid-state image pickup device that includes a substrate including a photoelectric conversion unit, and a waveguide arranged on the substrate, and including a plurality of insulating films having an opening and a member comprising a first silicon nitride film and a second silicon nitride film, the member being arranged in the opening in such a manner as to correspond to the photoelectric conversion unit, the method comprising: a first step and a second step, wherein in the first step, the first silicon nitride film is formed in the opening by a high-density plasma-enhanced chemical vapor deposition apparatus including an upper electrode and a lower electrode, wherein after the first step, in the second step, the second silicon nitride film is formed by the high-density plasma-enhanced chemical vapor deposition apparatus under conditions in which a ratio of a radio-frequency power of the lower electrode to a radio-frequency power of the upper electrode is higher than that in the first step.