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1. WO2020081573 - ACOUSTIC WAVE DEVICES

Publication Number WO/2020/081573
Publication Date 23.04.2020
International Application No. PCT/US2019/056348
International Filing Date 15.10.2019
IPC
H03H 9/64 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
46Filters
64using surface acoustic waves
H03H 9/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
02Details
H03H 9/145 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
02Details
125Driving means, e.g. electrodes, coils
145for networks using surface acoustic waves
H03H 9/25 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
25Constructional features of resonators using surface acoustic waves
CPC
H03H 3/08
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
3Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
007for the manufacture of electromechanical resonators or networks
08for the manufacture of resonators or networks using surface acoustic waves
H03H 9/02551
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
02535of surface acoustic wave devices
02543Characteristics of substrate, e.g. cutting angles
02551of quartz substrates
H03H 9/02574
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
02535of surface acoustic wave devices
02543Characteristics of substrate, e.g. cutting angles
02574of combined substrates, multilayered substrates, piezo-electrical layers on not-piezo- electrical substrate
H03H 9/145
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
125Driving means, e.g. electrodes, coils
145for networks using surface acoustic waves
H03H 9/25
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
25Constructional features of resonators using surface acoustic waves
H03H 9/64
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
46Filters
64using surface acoustic waves
Applicants
  • TOHOKU UNIVERSITY [US]/[JP]
Inventors
  • KADOTA, Michio
  • TANAKA, Shuji
  • ISHII, Yoshimi
Agents
  • CHANG, James W.
Priority Data
62/746,51216.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACOUSTIC WAVE DEVICES
(FR) DISPOSITIF À ONDES ACOUSTIQUES
Abstract
(EN)
Acoustic wave devices and related methods are disclosed. In some embodiments, an acoustic wave device can include a quartz substrate having a first surface, and a piezoelectric plate formed from LiTaO3 or LiNbO3 and having a first surface configured to support a surface acoustic wave and a second surface in engagement with the first surface of the quartz substrate. The second surface of the piezoelectric plate is a minus surface resulting from crystal structure orientation of the piezoelectric plate. The acoustic wave device can further include an interdigital transducer electrode formed on the first surface of the piezoelectric plate and configured to provide transducer functionality associated with the surface acoustic wave.
(FR)
La présente invention concerne des dispositifs à ondes acoustiques et des procédés associés. Selon certains modes de réalisation, un dispositif à ondes acoustiques peut comprendre un substrat en quartz comportant une première surface et une plaque piézoélectrique formée à partir de LiTaO3 ou de LiNbO3 et comportant une première surface conçue pour supporter une onde acoustique de surface et une seconde surface en contact avec la première surface du substrat en quartz. La seconde surface de la plaque piézoélectrique est une surface négative issue de l'orientation de la structure cristalline de la plaque piézoélectrique. Le dispositif à ondes acoustiques peut en outre comprendre une électrode de transducteur interdigitée formée sur la première surface de la plaque piézoélectrique et conçue pour fournir une fonctionnalité de transducteur associée à l'onde acoustique de surface.
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