Title:
ELASTIC WAVE DEVICE AND LADDER-TYPE FILTER
Document Type and Number:
WIPO Patent Application WO/2022/173038
Kind Code:
A1
Abstract:
Provided is an elastic wave device that can be further reduced in size. An elastic wave device 1 comprises: a piezoelectric layer 6 that comprises lithium tantalate or lithium niobate; a dielectric film 7 that is provided on the piezoelectric layer 6 and that comprises a dielectric material which has a higher permittivity than lithium tantalate and lithium niobate; and an IDT electrode 8 that is provided on the dielectric film 7.
Inventors:
DAIMON KATSUYA (JP)
Application Number:
PCT/JP2022/005638
Publication Date:
August 18, 2022
Filing Date:
February 14, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/25
Domestic Patent References:
| WO2009098840A1 | 2009-08-13 | |||
| WO2012086639A1 | 2012-06-28 | |||
| WO2020204036A1 | 2020-10-08 |
Attorney, Agent or Firm:
OSAKA FRONT (JP)
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