Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/003657
Kind Code:
A1
Abstract:
Provided is an elastic wave device capable of reducing a spurious component caused by a high-order mode of an elastic wave such as a Rayleigh wave. The elastic wave device 1 is provided with an IDT electrode 3 and an insulating film 6 disposed on a piezoelectric substrate 2 serving as a device substrate. When one end of an intersection region of the IDT electrode 3 in an elastic wave propagation direction is defined as a first end 3a, and the other end as a second end 3b, the thickness of the insulating film 6 decreases or increases toward the center in the elastic wave propagation direction from the first end 3a and the second end 3b.
Inventors:
KONNO AKIRA (JP)
Application Number:
PCT/JP2017/023045
Publication Date:
January 04, 2018
Filing Date:
June 22, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145; H03H9/25
Domestic Patent References:
| WO2011142183A1 | 2011-11-17 |
Foreign References:
| JP2014187568A | 2014-10-02 | |||
| JP2010166148A | 2010-07-29 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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