Patent Number: 6,332,567

Title: Piezoelectric element, manufacturing method thereof, and mounting apparatus of piezoelectric resonators

Abstract: An improved method of manufacturing a piezoelectric element and an improved piezoelectric element are provided. The improved method comprises the steps of causing a gas discharge in a predetermined discharge gas at approximately atmospheric pressure and generating an excited active species of the discharge gas as a result of the gas discharge. Then, at least one of a connecting surface of an electrode formed of a piezoelectric piece on a piezoelectric resonator and a connecting portion of a lead terminal are exposed to the excited active species, whereby the exposed connecting portions are surface treated. Finally, the electrode and the lead terminal are connected together, and at least the electrode and the lead terminal are sealed in a case. The improved piezoelectric element is formed by this process and uses less solder and is more stable than prior art piezoelectric elements.

Inventors: Ikegami; Yasumitsu (Suwa, JP), Miyakawa; Takuya (Suwa, JP)

Assignee: Seiko Epson Corporation

International Classification: H03H 3/02 (20060101); H03H 3/00 (20060101); H03H 9/05 (20060101); H01L 41/22 (20060101); B23K 031/00 ()

Expiration Date: 12/25/2018