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:
Aug. 20, 2019
Filed:
Feb. 07, 2017
Applicant:
Wisol Co., Ltd., Osan-si, Gyeonggi-do, KR;
Inventors:
Chul Hwa Lee, Yongin-si, KR;
Takahiro Sato, Kawasaki, JP;
Assignee:
WISOL CO., LTD., Osan-si, Gyeonggi-Do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H01L 23/34 (2006.01); H01L 23/522 (2006.01); H01L 23/528 (2006.01); H01L 23/532 (2006.01); H03H 3/08 (2006.01); H03H 9/02 (2006.01); H03H 9/145 (2006.01);
U.S. Cl.
CPC ...
H03H 9/6406 (2013.01); H01L 23/34 (2013.01); H01L 23/528 (2013.01); H01L 23/5226 (2013.01); H01L 23/53228 (2013.01); H03H 3/08 (2013.01); H03H 9/02834 (2013.01); H03H 9/14538 (2013.01); H01L 23/5283 (2013.01);
Abstract
A surface acoustic wave resonator includes: a piezoelectric substrate; a plurality of metal structures formed on a top surface of the piezoelectric substrate to have a negative profile; and a temperature compensation layer covering the top surface of the piezoelectric substrate and the plurality of metal structures. The surface acoustic wave resonator according to an embodiment of the present invention has a frequency characteristic insensitive to change of profile and has an effect of having a high semi-resonance Q value characteristic.