Patent ID: 8749062

Claim:
A semiconductor device, comprising: a semiconductor substrate; a first well of a first conductive type formed in a first portion of said semiconductor substrate; a second well of a second conductive type formed in a second portion of said semiconductor substrate; a first source region and a first drain region formed in said first well; a second source region and a second drain region formed in said second well; a gate electrode successively formed over said semiconductor substrate astride between said first source region and said first drain region and between said second source region and said second drain region; a first transistor formed in said first well and including a part of said gate electrode, said first source region and said first drain region; a second transistor formed in said second well and including another part of said gate electrode, said second source region and said second drain region; a first film and a second film which are formed over said gate electrode and arranged to cover said first transistor and said second transistor, respectively, a boundary region between said first film and said second film placed out of a boundary between said first well and said second well to said first well, and said boundary region placed over only said first well of said first well and said second well; and a contact electrode which extends through only said second film of said first film and said second film to said gate electrode.