Withrow & Terranova, P.L.L.C.
MEMS vibrating structure using a single-crystal piezoelectric thin-film layer having domain inversions
The present invention relates to a micro-electro-mechanical systems (MEMS) vibrating structure supported by a MEMS anchor system, and includes a single-crystal piezoelectric thin-film layer having domain inversions, which determine certain vibrational characteristics of the MEMS vibrating structure. The MEMS vibrating structure may have dominant lateral vibrations or dominant thickness vibrations. The single-crystal piezoelectric thin-film layer may include Lithium Tantalate or Lithium Niobate, and may provide MEMS vibrating structures with precise sizes and shapes, which may provide high accuracy and enable fabrication of multiple resonators having different resonant frequencies on a single substrate.
RF Micro Devices, Inc.
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Seungbae Kushal Sheng-Shian
Lee Bhattacharjee Li