Patent ID: 7180390
Filing Date: 2007-02-20
Classification: H03H

Abstract:
1. An electronic component comprising: a substrate including one of a cavity and a recessed portion; an insulating film supported by the substrate; and a vibration unit provided on the insulating film and including a thin film member including a piezoelectric thin film, the thin film member being disposed between a pair of opposed upper and lower electrodes; wherein at least one of the insulating film and the piezoelectric thin film includes a nitride thin film; the nitride thin film has been planarized by a plasma treatment in an oxygen-containing atmosphere; the insulating film is not in contact with the substrate in the one of the cavity and the recessed portion; and substantially an entire main surface of the nitride thin film is a planarized surface that has been planarized by the plasma treatment in an oxygen-containing atmosphere.