The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2011
Filed:
Aug. 17, 2010
Masashi Numata, Chiba, JP;
Kiyoshi Aratake, Chiba, JP;
Masashi Numata, Chiba, JP;
Kiyoshi Aratake, Chiba, JP;
Seiko Instruments Inc., Chiba, JP;
Abstract
There is provided a piezoelectric vibratorthat includes a base substrate, a lid substrate, a piezoelectric vibrating reed, a pair of external electrodesand, a pair of through electrodesand, and routing electrodesand. The lid substrateincludes a recessfor a cavity and is bonded to the base substrate so that the recess faces the base substrate. The piezoelectric vibrating reedis bonded to the upper surface of the base substrate so as to be received in a cavity that is formed between both the substrates. The pair of external electrodesandis formed on the lower surface of the base substrate. The pair of through electrodesandis formed by hardening paste P, which contains a plurality of metal fine particles and a plurality of metal beads P, so as to pass through the base substrate, maintains airtightness in the cavity, and is electrically connected to the pair of external electrodes, respectively. The routing electrodesandare formed on the upper surface of the base substrate and electrically connect the pair of through electrodes to the piezoelectric vibrating reed. The melting point of the metal bead is higher than the firing temperature of the paste.