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Murata manufacturing co., ltd. (20240250657). ACOUSTIC WAVE DEVICE simplified abstract

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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 20240250657 titled 'ACOUSTIC WAVE DEVICE

The abstract describes an acoustic wave device with a unique structure involving a support, a piezoelectric layer, and a functional electrode with electrode fingers and busbar electrodes.

  • The device includes a support with a specific thickness in one direction.
  • A piezoelectric layer extends in the same direction as the support.
  • A functional electrode on the main surface of the piezoelectric layer includes electrode fingers in a different direction intersecting with the first direction.
  • First busbar electrode is connected to the first electrode fingers.
  • Second electrode fingers face the first electrode fingers in a perpendicular or substantially perpendicular direction and are connected to a second busbar electrode.
  • The piezoelectric layer consists of two bodies with different dielectric polarizations, with the first body having a smaller thickness than the second body.

Potential Applications: - This technology can be used in acoustic wave devices for various applications such as sensors, actuators, and communication devices.

Problems Solved: - The device provides improved acoustic wave generation and control due to its unique electrode and piezoelectric layer structure.

Benefits: - Enhanced performance and efficiency in acoustic wave devices. - Greater control and precision in acoustic wave generation.

Commercial Applications: - This technology can be utilized in the development of advanced sensors, actuators, and communication devices for various industries such as telecommunications, healthcare, and automotive.

Questions about the technology: 1. How does the unique structure of the piezoelectric layer contribute to the device's performance? 

  - The different thicknesses and dielectric polarizations of the piezoelectric bodies enhance the acoustic wave generation and control capabilities of the device.

2. What are the potential cost implications of implementing this technology in commercial applications? 

  - The increased performance and efficiency of the device may offset the initial investment in implementing this technology, making it a cost-effective solution for various industries.


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.

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