Title:
ELASTIC WAVE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/163842
Kind Code:
A1
Abstract:
This elastic wave element is provided with: an IDT electrode 31 that is provided with a plurality of electrode fingers 32 and excites an elastic surface wave; a first substrate 10 that has an upper surface on which the IDT electrode 31 is located, and comprises a piezoelectric crystal having a thickness less than double the repetition interval p of the plurality of electrode fingers 32; an intermediate layer that is provided with a first surface and a second surface, the first surface being joined to a lower surface of the first substrate, and comprises a material having a slower transverse wave sound velocity than that of the first substrate; and a second substrate that comprises sapphire joined to the second surface.
Inventors:
ITO MOTOKI (JP)
KISHINO TETSUYA (JP)
KISHINO TETSUYA (JP)
Application Number:
PCT/JP2019/006387
Publication Date:
August 29, 2019
Filing Date:
February 20, 2019
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H03H9/25; H01L41/083; H01L41/09; H01L41/18; H01L41/187
Domestic Patent References:
| WO2012086639A1 | 2012-06-28 | |||
| WO2017013968A1 | 2017-01-26 | |||
| WO2018003273A1 | 2018-01-04 |
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