Method for manufacturing a substrate for a radiofrequency device

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United States of America Patent

PATENT NO 11870411
APP PUB NO 20210075389A1
SERIAL NO

17041367

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Abstract

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A process for fabricating a substrate for a radiofrequency device by joining a piezoelectric layer to a carrier substrate by way of an electrically insulating layer, the piezoelectric layer having a rough surface at its interface with the electrically insulating layer, the process being characterized in that it comprises the following steps: —providing a piezoelectric substrate having a rough surface for reflecting a radiofrequency wave, —depositing a dielectric layer on the rough surface of the piezoelectric substrate, —providing a carrier substrate, —depositing a photo-polymerizable adhesive layer on the carrier substrate, —bonding the piezoelectric substrate to the carrier substrate by way of the dielectric layer and of the adhesive layer, in order to form an assembled substrate, —irradiating the assembled substrate with a light flux in order to polymerize the adhesive layer, the adhesive layer and the dielectric layer together forming the electrically insulating layer.

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Patent Owner(s)

Patent OwnerAddress
SOITECPARC TECHNOLOGIQUE DES FONTAINES CHEMIN DES FRANQUES BERNIN 38190

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barge, Thierry Chevrieres, FR 30 368
Belhachemi, Djamel Saint Martin D'Heres, FR 10 6

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