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:
Oct. 18, 2016
Filed:
Nov. 14, 2014
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Yuji Toyota, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A surface acoustic wave filter includes a piezoelectric substrate, a lower-layer wiring line, an upper-layer wiring line, and an interlayer insulating film. The lower-layer wiring line is disposed on the piezoelectric substrate. The upper-layer wiring line crosses the lower-layer wiring line. The upper-layer wiring line has a potential that is different from the potential of the lower-layer wiring line. The interlayer insulating film is disposed between the lower-layer wiring line and the upper-layer wiring line. The interlayer insulating film has a portion that has a width that is not greater than the width of the upper-layer wiring line in a cross-sectional view taken along a direction in which the lower-layer wiring line extends.