| 摘要 |
PROBLEM TO BE SOLVED: To reduce cost of a crystal resonator, particularly cost of its metal cover. SOLUTION: The crystal resonator is configured by containing a piece of crystal in a concave container proper and sealing up the container with a metal cover. The metal cover is made of stainless steel of, for example, SUS430. A silver solder is provided on one of the main faces of the cover, and the cover and the container proper are joined by seam welding or beam welding. An Ni layer is formed on one of the main faces of the cover and the silver solder is provided on the Ni layer. COPYRIGHT: (C)2005,JPO&NCIPI
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