Patent ID: 8617991

Claim:
A method of manufacturing a semiconductor device, the method comprising: providing a substrate having first and second regions defined thereon; forming an interlayer dielectric film on the substrate, the interlayer dielectric film including first and second trenches on the first and second regions of the substrate, respectively; forming a first metal layer along a sidewall and a bottom surface of the first trench and along a top surface of the interlayer dielectric film in the first region, and forming a second metal layer along a sidewall and a bottom surface of the second trench and along a top surface of the interlayer dielectric film in the second region; forming a first sacrificial layer pattern on the first metal layer such that the first sacrificial layer fills a portion of the first trench; and forming a first electrode layer by etching the first metal layer and the second metal layer using the first sacrificial layer pattern, and removing the first sacrificial layer pattern.