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:
Jan. 09, 2024
Filed:
Jan. 26, 2021
Applicant:
Wisol Co., Ltd., Osan-si, KR;
Inventor:
Young Hun Kim, Osan-si, KR;
Assignee:
WISOL CO., LTD., Osan-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 9/205 (2006.01); H03H 9/17 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02102 (2013.01); H03H 9/173 (2013.01); H03H 9/205 (2013.01);
Abstract
A film bulk acoustic resonator (FBAR) chip and package structure with an improved temperature coefficient that is capable of being more stable with respect to surrounding temperature changes, without any decrease in performance of Q factor or k2e. The FBAR chip and package structure includes a plurality of FBARs located on a central area of one surface of a substrate and each having a bottom electrode, a piezoelectric material, and a top electrode; and a temperature compensation layer formed around the central area of one surface of the substrate.