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US 12,081,195 B2Granted
Joined body and surface acoustic wave device
AssigneeSumitomo Electric Industries, Ltd.
InventorsHirohisa Saito, Shigeru Nakayama, Yoshihiro Imagawa, Keiichiro Geshi, Yuichiro Yamanaka
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Abstract
Provided is a joined body including a piezoelectric substrate and a polycrystalline spinel substrate provided on one main surface of the piezoelectric substrate, wherein the polycrystalline spinel substrate has a porosity of 0.005% or more and 0.6% or less.
Claims5
A joined body comprising:
- a piezoelectric substrate;
- and
- a polycrystalline spinel substrate provided on one main surface of the piezoelectric substrate, wherein
- the polycrystalline spinel substrate has a porosity of 0.005% or more and 0.6% or less.
1 more element
Dependencies are inferred from the claim text.