Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/202916
Kind Code:
A1
Abstract:
Provided is an elastic wave device capable of effectively suppressing spurious. An elastic wave device 1 of the present invention is provided with: a support member 3 including a support substrate 4; a piezoelectric layer 6 provided on the support member 3 and having a first main surface 6a and a second main surface 6b opposite each other; a first IDT electrode 7A provided on the first main surface 6a; and a second IDT electrode 7B provided on the second main surface 6b. The second IDT electrode 7B is embedded in the support member 3. At least one hollow portion 9 is provided around a portion of the support member 3 in which a plurality of electrode fingers of the second IDT electrode 7B are embedded.
Inventors:
TANIGUCHI YASUMASA (JP)
IWAMOTO HIDEKI (JP)
OKUNAGA HIROMU (JP)
IWAMOTO HIDEKI (JP)
OKUNAGA HIROMU (JP)
Application Number:
PCT/JP2022/013625
Publication Date:
September 29, 2022
Filing Date:
March 23, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145; H03H9/25
Foreign References:
| JP2007312164A | 2007-11-29 | |||
| JP2008236588A | 2008-10-02 | |||
| JP2005217818A | 2005-08-11 | |||
| JPH05145363A | 1993-06-11 | |||
| JP2012015767A | 2012-01-19 |
Attorney, Agent or Firm:
OSAKA FRONT (JP)
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