Patent ID: 8053268

Claim:
A method of manufacturing a semiconductor device, comprising: forming a light receiving element at a surface part of a semiconductor substrate; forming, on the semiconductor substrate, a plurality of wiring interlayer films each including a wiring layer formed as the result of the fact that copper is buried; forming, on the wiring interlayer film of the uppermost layer, a first silicon nitride film in which Si—H concentration is smaller than N—H concentration; forming, at a peripheral circuit part, a contact plug in contact with the wiring layer included in the wiring interlayer film of the uppermost layer, and a wiring in contact with the contact plug; forming an interlayer insulating film in a manner to cover the wiring; removing the interlayer insulating film at an upper part of the light receiving element; and forming, at an upper part of the light receiving element, a second silicon nitride film in which Si—H concentration is smaller than N—H concentration.