Patent ID: 8866144

Claim:
A semiconductor device comprising: a thin film transistor over an insulating substrate, the thin film transistor including a semiconductor film and a gate electrode; a first silicon nitride film over the gate electrode; a first interlayer insulating film over the first silicon nitride film; a first wiring over the first interlayer insulating film, the first wiring including a material selected from Al, Ti, Mo, and W and passing through the first interlayer insulating film so as to be electrically connected with the semiconductor film; a second interlayer insulating film over the first wiring; a second wiring over the second interlayer insulating film, the second wiring including copper and passing through the second interlayer insulating film so as to be electrically connected to the first wiring; and a second silicon nitride film over the second wiring, wherein the first silicon nitride film and the second silicon nitride film each contain hydrogen at a concentration of 1×10 21 /cm 3 or less.