US Patent Application 18130930. ACOUSTIC WAVE DEVICE simplified abstract
Contents
ACOUSTIC WAVE DEVICE
Organization Name
Murata Manufacturing Co., Ltd.
Inventor(s)
Toshimaro Yoneda of Nagaokakyo-shi (JP)
ACOUSTIC WAVE DEVICE - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18130930 Titled 'ACOUSTIC WAVE DEVICE'
Simplified Explanation
This abstract describes an acoustic wave device that consists of two layers of piezoelectric material, specifically lithium niobate or lithium tantalate. Each layer has a set of electrodes on one side, with the first layer having two electrodes and the second layer having two different electrodes. The arrangement of the first layer and its electrodes forms a resonator for acoustic waves, as does the second layer with its electrodes. The crystal orientation of the first layer is at a different angle compared to the direction perpendicular to the lengthwise direction of its electrodes, while the crystal orientation of the second layer is also at a different angle compared to the direction perpendicular to the lengthwise direction of its electrodes.
Original Abstract Submitted
An acoustic wave device includes first and second piezoelectric layers including lithium niobate or lithium tantalate, a pair of first and second electrodes on a first principal surface of the first piezoelectric layer, and a pair of third and fourth electrodes on a first principal surface of the second piezoelectric layer, wherein the first piezoelectric layer and the first and second electrodes define a first acoustic wave resonator, the second piezoelectric layer and the third and fourth electrodes define a second acoustic wave resonator, and an angle between a crystal orientation of the first piezoelectric layer and a direction perpendicular or substantially perpendicular to a lengthwise direction of the pair of the first and second electrodes is different from an angle between a crystal orientation of the second piezoelectric layer and a direction perpendicular or substantially perpendicular to a lengthwise direction of the pair of the third and fourth electrodes.
