Composite substrate, surface acoustic wave device, and method for manufacturing composite substrate
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United States of America Patent
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Oct 24, 2023
Grant Date -
N/A
app pub date -
Oct 10, 2017
filing date -
Nov 11, 2016
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Abstract
There are provided a method for manufacturing a substrate excellent in heat dissipation with a small loss in radio frequencies with no need of a high temperature process in which a metal impurity is diffused, and a substrate of high thermal conductivity. A composite substrate according to the present invention is a composite substrate having a piezoelectric single crystal substrate, a support substrate, and an intermediate layer provided between the piezoelectric single crystal substrate and the support substrate. The intermediate layer is a film formed of an inorganic material, and at least a part of the film is thermally synthesized silica. The intermediate layer may be separated into at least two layers along the bonding surface of the composite substrate. The first intermediate layer in contact with the support substrate may be a layer including thermally synthesized silica.
First Claim
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SHIN-ETSU CHEMICAL CO LTD | TOKYO JAPAN |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Akiyama, Shoji | Gunma, JP | 178 | 1539 |
Tanno, Masayuki | Gunma, JP | 36 | 145 |
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