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:
Sep. 03, 2002
Filed:
Aug. 30, 2000
Tatsunobu Shibuya, Saitama, JP;
Susumu Negishi, Saitama, JP;
Hiroshi Uehara, Saitama, JP;
Yasuo Sakaba, Saitama, JP;
Seiji Oda, Saitama, JP;
Xinglong Gong, Saitama, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
There is provided a crystal oscillator in which a crystal blank and an integrated circuit (IC) chip are accommodated in a vessel and the IC chip is fixed through a bump to the bottom surface of the vessel by means of ultrasonic thermocompression bonding. The IC chip contains an oscillation circuit utilizing the crystal blank and has a plurality of terminal electrodes on a major surface thereof. A plurality of connection terminal portions are formed on the bottom surface of the concave portion of the vessel so that each of the connection terminal portions corresponds to one of the terminal electrodes. Each of the connection terminal portions is formed into a rectangular shape and the width of each connection terminal portion is identical. The terminal electrodes and the connection terminal portions are bonded to each other through a bump by means of ultrasonic thermocompression bonding. Thus, the IC chip is fixed to the bottom surface of the concave portion of the vessel.