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:
Jul. 05, 2005
Filed:
Jul. 06, 2001
Osamu Furukawa, Kanagawa-ken, JP;
Osamu Furukawa, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A surface acoustic wave device used in, for example, a mobile communications field as a filter or duplexer and the like to handle high frequencies of about several GHz is fabricated by flip-chip-connecting a surface of a piezoelectric substrate to a base board facing thereto, emitting particulate first sealing material from above a back face of the piezoelectric substrate to apply the first sealing material to the back face of the piezoelectric substrate and hang the first sealing material from edges of the piezoelectric substrate to the base board to form bridging, and forming second sealing material on the first sealing material. These operations provide a manufacturing method of a small-sized surface-mounting surface acoustic wave device appropriate for flip-chip connection.