Patent ID: 8288925
Filing Date: 2012-10-16
Classification: H03H,Y10T

Abstract:
1. A method of manufacturing a quartz resonator element in which a thin film-shaped electrode is formed on a plate-shaped quartz piece to excite the quartz piece, the method comprising: forming a first metal layer that is composed of chromium and whose thickness is not less than 20 Å nor more than 30 Å on the surface of the plate-shaped quartz piece, the plate-shaped quartz piece being AT cut; forming a second metal layer that is composed of gold or silver and whose thickness is not less than 500 Å nor more than 950 Å on an upper surface of the first metal layer, and wherein said thin film-shaped electrode is made up of the first metal layer and the second metal layer; and heating the plate-shaped quartz piece on which the electrode is formed to a temperature range of not less than 300° C. nor more than 400° C., and diffusing the chromium composing the first metal layer into the second metal layer.