18627883. ACOUSTIC WAVE DEVICE simplified abstract (Murata Manufacturing Co., Ltd.)

ACOUSTIC WAVE DEVICE

Organization Name

Murata Manufacturing Co., Ltd.

Inventor(s)

Sho Nagatomo of Nagaokakyo-shi (JP)

ACOUSTIC WAVE DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18627883 titled 'ACOUSTIC WAVE DEVICE

The patent application describes an acoustic wave device with a unique structure involving a piezoelectric layer and functional electrodes.

• The device includes a support with a certain thickness, a piezoelectric layer extending in one direction, and functional electrodes with electrode fingers in another direction.
• There are busbar electrodes connected to the electrode fingers, creating a complex electrical configuration.
• The piezoelectric layer consists of two bodies with different dielectric polarizations, each with a specific thickness ratio.

Potential Applications: - This technology can be used in various acoustic wave applications such as sensors, actuators, and transducers. - It can also find applications in telecommunications, medical devices, and industrial equipment.

Problems Solved: - The device addresses the need for efficient and precise acoustic wave generation and detection. - It provides a solution for enhancing the performance of acoustic devices in different industries.

Benefits: - Improved sensitivity and accuracy in acoustic wave detection. - Enhanced control and manipulation of acoustic waves for various applications.

Commercial Applications: Title: Advanced Acoustic Wave Devices for Enhanced Sensing and Actuation This technology can be commercialized for the development of high-performance sensors, actuators, and transducers in industries such as healthcare, telecommunications, and manufacturing.

Questions about Acoustic Wave Devices: 1. How does the thickness ratio of the piezoelectric bodies affect the performance of the device?

  - The thickness ratio influences the sensitivity and response time of the acoustic wave device, impacting its overall efficiency.

2. What are the key factors to consider when designing functional electrodes for acoustic wave devices?

  - The design of functional electrodes should take into account factors such as electrode finger orientation, busbar electrode connections, and dielectric polarization for optimal performance.

Original Abstract Submitted

An acoustic wave device includes a support with a thickness in a first direction, a piezoelectric layer extending in the first direction, and a functional electrode on a main surface of the piezoelectric layer and including first electrode fingers extending in a second direction intersecting with the first direction, a first busbar electrode connected to the first electrode fingers, second electrode fingers facing any of the first electrode fingers in a third direction perpendicular or substantially perpendicular the second direction and extending in the second direction, and a second busbar electrode connected to the second electrode fingers. The piezoelectric layer includes a first piezoelectric body in contact with the functional electrode and a second piezoelectric body with a different dielectric polarization than that of the first piezoelectric body, and a thickness of the first piezoelectric body is less than or equal to a thickness of the second piezoelectric body.