| 摘要 |
PROBLEM TO BE SOLVED: To provide a package for a piezoelectric device in which the package is not damaged even when a laser beam to be irradiated in order to fuse a sealing material is deviated from a sealing hole. SOLUTION: When the sealing hole (through hole) 20 formed on the package 10 for the piezoelectric device is a step hole consisting of a first through hole 20a of a small diameter which has an aperture part on the inside of the package 10 and a second through hole 20b of a large diameter which has an aperture part on the outside of the package 10, metallized parts 24, 25 are formed on a step part which is a connection part between the first and second through holes 20a, 20b and suitable for the step hole, the inwall part of the second through hole 20b and the outer edge of the aperture part of the second through hole 20b. COPYRIGHT: (C)2005,JPO&NCIPI
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