| 摘要 |
PROBLEM TO BE SOLVED: To enlarge the joint area between a sealing part and a sealing material and restrain the generated leakage by the enlarged area to miniaturize a surface mounting-type piezoelectric oscillator by forming grooves in a sealing part for a retainer base for surface mounting which stores and retains a piezoelectric element and a sealing part between the retainer base and a lid to be arranged on the upper surface of the retainer base. SOLUTION: Grooves 5a, 6a are formed in the sealing part of a retainer base 5 for surface mounting where a storage part for a piezoelectric element 1 is formed and a sealing part between the retainer base 5 and a lid 6 to be arranged on the upper face of the retainer base 5 respectively. At the same time, the grooves 5a, 6a and the sealing parts are filled with a sealing material 7. In this case, the retainer base 5 for surface mounting is formed of an insulating member such as glass or ceramics. However, when an eutectic alloy is used as the sealing material 7, the sealing part is treated by plating, metallizing or any other means so that the sealing material 7 can be welded. Thus it is possible to enlarge the joint area between the sealing parts of the retainer base 5 and the lid 6 and the sealing material 7 and thereby restrain the generated leakage by this enlarged area to achieve the miniaturization of a surface mounting-type piezoelectric element. |
