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:
Jun. 22, 2010
Filed:
Sep. 10, 2008
Wen-ching Shih, Taipei, TW;
Hui-min Wang, Taipei, TW;
Wen-Ching Shih, Taipei, TW;
Hui-Min Wang, Taipei, TW;
Tatung Company & Tatung University, Taipei, TW;
Abstract
A high frequency SAW device and the substrate thereof are disclosed. The disclosed high frequency SAW device does not need to use the conventional and expensive sapphire substrate as its substrate. Besides, the disclosed substrate for a high-frequency SAW device can replace the conventional sapphire substrate in the use of the substrate for a high frequency SAW device. The disclosed high frequency SAW device comprises: a substrate; a first buffering layer forming on the surface of the substrate; a second buffering layer forming on the surface of the first buffering layer; a piezoelectric layer forming on the surface of the second buffering layer; an input transformation unit; and an output transformation unit, wherein the input transformation unit and the output transformation unit are formed in pairs on the surface of or beneath the piezoelectric layer.