GUIDED ACOUSTIC WAVE DEVICE IN A THIN LAYER OF PIEZOELECTRIC MATERIAL ADHESED BY A MOLECULAR ADHESIVE ONTO A CARRIER SUBSTRATE AND MANUFACTURING METHOD

摘要

The invention concerns a surface acoustic wave device comprising a fine piezoelectric material film, a molecular glue layer and a bearing substrate. The fine film constitutes a sound energy guide enabling to increase the performance levels of the device. The invention also concerns methods for making said sound wave device, comprising in particular a step which consists in molecular bonding between a bearing substrate and a piezoelectric substrate, then a step reducing the thickness of the piezoelectric substrate.