Patent ID: 8536005
Filing Date: 2013-09-17
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor integrated circuit device comprising the steps of: (a) forming a high-permittivity insulation film in an N-channel region and a P-channel region over a first main surface of a semiconductor wafer; (b) forming a P-channel capping film over the high-permittivity insulation film; (c) forming a high-melting point metal nitride masking film over the P-channel capping film; (d) removing the P-channel capping film and the high-melting point metal nitride masking film in the N-channel region; (e) covering the N-channel region and the P-channel region with an N-channel capping film after the step (d); (f) applying annealing treatment to the side of the first main surface of the semiconductor wafer after the step (e); (g) removing the high-melting point metal nitride masking film, the N-channel capping film, and the P-channel capping film after the step (f); (h) forming a gate electrode film over the high-permittivity insulation film after the step (g); and (i) forming a gate electrode in each of the N-channel region and the P-channel region by patterning the gate electrode film, wherein the high-melting point metal nitride masking film includes: (x (x