MEMS vibrating structure using an orientation dependent single-crystal piezoelectric thin film layer
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United States of America Patent
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Jul 5, 2016
Grant Date -
Jul 31, 2014
app pub date -
Sep 19, 2013
filing date -
Aug 31, 2007
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Abstract
A micro-electrical-mechanical system (MEMS) vibrating structure includes a carrier substrate, a first anchor, a second anchor, a single crystal piezoelectric body, a first conducting layer, and a second conducting layer. The first anchor and the second anchor are provided on the surface of the carrier substrate. The single-crystal piezoelectric body is suspended between the first anchor and the second anchor, and includes a uniform crystalline orientation defined by a set of Euler angles. The single-crystal piezoelectric body includes a first surface parallel to and facing the surface of the carrier substrate on which the first anchor and the second anchor are formed and a second surface opposite the first surface. The first conducting layer is inter-digitally dispersed on the second surface of the single-crystal piezoelectric body. The second conducting layer is inter-digitally dispersed on the first surface of the single-crystal piezoelectric body.
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