Patent ID: 7579748

Claim:
A method for manufacturing a piezoelectric device, the piezoelectric device being formed by bonding a piezoelectric resonator element to an inside of a package and sealing by a lid made of metal, comprising: a) forming the package, the piezoelectric resonator element, and the lid individually; b) bonding to mount the piezoelectric resonator element in the inside of the package; c) sealing the package by the lid air-tightly; and d) irradiating with a laser light from an outside via a window part that is made of glass and provided to the lid so as to transpire a part of a metal film for frequency adjustment, the metal film being provided to the piezoelectric resonator element, wherein in the step c), a metal brazing material is disposed between a metal part, the metal part being formed on a bonding surface of the package, and the lid, and the metal brazing material is molten with an electric current applied from a side of the lid so as to bond the package and the lid.