Seiko Instruments Inc

Sieko Instruments Inc.

Masayuki Sato

Atsushi Kamiyama

Sadao Oku

Satoshi Shimizu

Junji Teraya

Seigo Fukuchi

Atsushi Tomisaki

Kazunori Ishii

A piezoelectric vibrator has an airtight terminal comprised of a lead terminal and a piezoelectric member. The lead terminal has an inner lead portion and an outer lead portion. The piezoelectric member has an exciting electrode and a mount electrode disposed on a surface of the piezoelectric member. A plasma arc electrode is connected to a power supply for generating a plasma arc discharge. To bond together the inner lead portion of the lead terminal to the mount electrode of the piezoelectric member, the outer lead portion is connected to an output terminal of the power supply and the plasma arc electrode is positioned at a vicinity of a bonding portion for bonding together the inner lead portion and the mount electrode. A voltage is applied between the inner lead portion and the plasma arc electrode to generate a plasma arc discharge. The generated plasma arc is discharged to the bonding portion while subjecting at least the bonding portion to an argon gas atmosphere to thereby bond together with a solder the inner lead portion and the mount electrode.

Method of fabricating piezoelectric vibrator and electronic apparatus and radio wave timepiece having piezoelectric vibrator

A lead frame has a pair of side frames each having a plurality of positioning holes and spaced apart from each other in a width direction of the lead frame. At least one section bar extends between the pair of side frames. First lead sections extend from the section bar and are arranged at predetermined intervals along the width direction of the lead frame. Second lead sections extend from the section bar along the width direction of the lead frame and are disposed in confronting and spaced-apart relation to the respective first lead sections in a longitudinal direction of the lead frame to define a frame area extending between the pair of side frames. Each of the second lead sections has a pair of separate and independent protruding portions disposed adjacent one another.

Lead frame for surface mount-type piezoelectric vibrator

A surface mount type piezoelectric vibrator comprises a piezoelectric vibrator having a piezoelectric vibrating piece bonded to an airtight terminal with a lead terminal and sealed by a cylindrical bottomed metal sealing tube. An electrode terminal is connected to the lead terminal so that a tip of the electrode terminal is disposed approximately at the same position as a tip of the lead terminal in a longitudinal direction of the surface mount type piezoelectric vibrator. The piezoelectric vibrator is coated with a mold resin.

Surface mount type piezoelectric vibrator and manufacturing method of the same, an oscillator with the surface mount type piezoelectric vibrator, an electronic unit, and a wave clock

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Chiba, Japan

Masayuki Sato