超薄型水晶振動子の開発

概要

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We have succeeded in development of the thinnest crystal resonator unit in the world. The thin unit comprises a frame-resonator having a resonator and a supporting frame one-body-formed by means of photo-lithographic process, two containers half-etched on one side of quartz plates, and sheets of solder put between the containers and the frame-resonator, and is packaged in vacuum with heat. In order to accomplish the unit, several conditions for formation of metal film layers for enclosure in vacuum, transparence of half-etched surfaces of two containers, and the enclosure in vacuum, were determined by various experiments. These units are used in thin-small size analogue quartz watches for lady's use of Caliber 6720.
社団法人日本時計学会の論文
1981-06-20