Patent ID: 7923795

Claim:
A semiconductor device comprising: a first electrode and a second electrode arranged so as to face each other via a first insulator film, a void and a second insulator film, wherein the first insulator film is formed over the first electrode, wherein the second insulator film is formed over the first insulator film, wherein the second electrode is formed over the second insulator film, wherein the void is formed between the first insulator film and the second insulator film, wherein at least a portion of the first insulator film contacting with the first electrode is made of silicon oxide, wherein at least a portion of the second insulator film contacting with the second electrode is made of silicon oxide, and wherein at least one of the first insulator film and the second insulator film comprises a silicon nitride layer portion, said silicon nitride layer portion being positioned between the first electrode and the second electrode without contacting either the first electrode or the second electrode.