Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/014608
Kind Code:
A1
Abstract:
Provided is an elastic wave device that enables suppression of ripples in frequency response characteristics. This elastic wave device 10 comprises: a support substrate 13; a piezoelectric layer 14 provided on the support substrate 13; a functional electrode provided on the piezoelectric layer 14; and a first electrode film (first busbar 16) and a second electrode film (second busbar 17), which are each provided on the piezoelectric layer 14, which face each other, and which have mutually different potentials. The thickness of at least a section of the first electrode film is different from the thickness of at least a section of the second electrode film.
Inventors:
YAMANE TAKASHI (JP)
ISHII YUTA (JP)
ISHII YUTA (JP)
Application Number:
PCT/JP2021/026354
Publication Date:
January 20, 2022
Filing Date:
July 13, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145
Domestic Patent References:
| WO2017188342A1 | 2017-11-02 | |||
| WO2019138810A1 | 2019-07-18 | |||
| WO2020100949A1 | 2020-05-22 |
Foreign References:
| JP2005286945A | 2005-10-13 | |||
| JP2017152868A | 2017-08-31 | |||
| JP2007228341A | 2007-09-06 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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