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. 10, 2022
Filed:
Jul. 21, 2020
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Tae Kyung Lee, Suwon-si, KR;
Won Han, Suwon-si, KR;
Sang Uk Son, Suwon-si, KR;
Hwa Sun Lee, Suwon-si, KR;
Moon Chui Lee, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Abstract
A bulk-acoustic wave resonator includes a substrate, a first electrode disposed on the substrate, a piezoelectric layer covering at least a portion of the first electrode, and a second electrode covering at least a portion of the piezoelectric layer. When an active region, in which the first electrode and the second electrode are disposed to overlap each other, is viewed from above, among four sides of a rectangle with which at least three vertices of a polygon formed by the active region are in contact, a longest side is defined as a side B and a side connected to side B is defined as a side A, and an aspect ratio (side B/side A) is 1.3 to 3.