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:
May. 20, 2008
Filed:
Oct. 02, 2006
Applicants:
I-nan Lin, Taipei, TW;
Jin-hua Huang, Hsinchu, TW;
Cheng-hsien Chou, Tainan, TW;
Inventors:
Assignee:
Tamkang University, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/25 (2006.01);
U.S. Cl.
CPC ...
Abstract
A surface acoustic wave substrate includes: a diamond layer; a piezoelectric layer of aluminum nitride; and a titanium nitride-based buffer layer sandwiched between the diamond layer and the piezoelectric layer. The titanium nitride-based buffer layer includes a graded structure or includes a first sub-layer of titanium and a second sub-layer of titanium nitride sandwiched between the first sub-layer and the piezoelectric layer.