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:
Mar. 14, 2017
Filed:
Dec. 05, 2014
Ngk Insulators, Ltd., Aichi, JP;
Yuji Hori, Owariasahi, JP;
Tomoyoshi Tai, Inazawa, JP;
Akiyoshi Ide, Kasugai, JP;
Sugio Miyazawa, Kasugai, JP;
NGK INSULATORS, LTD., Aichi, JP;
Abstract
A composite substrateincludes a supporting substrateand a piezoelectric substratewhich are bonded to each other. In this embodiment, the supporting substrateand the piezoelectric substrateare bonded to each other by an adhesive layer. In the composite substrate, since the supporting substrateis composed of a translucent alumina ceramic, alignment is easily performed during FCB compared with the case where the supporting substrate is composed of an opaque ceramic. Furthermore, preferably, the linear transmittance and the total light transmittance from the front of the supporting substratein the visible light range (360 to 750 nm) are 10% or more and 70% or more, respectively.