18523989. PIEZOELECTRIC BULK WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME simplified abstract (Murata Manufacturing Co., Ltd.)

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PIEZOELECTRIC BULK WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME

Organization Name

Murata Manufacturing Co., Ltd.

Inventor(s)

Kazunori Inoue of Nagaokakyo-shi (JP)

PIEZOELECTRIC BULK WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME - A simplified explanation of the abstract

This abstract first appeared for US patent application 18523989 titled 'PIEZOELECTRIC BULK WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME

Simplified Explanation

The abstract describes a piezoelectric bulk wave device with a support substrate, a piezoelectric layer, and functional electrodes. The device includes a cavity portion in the support, superposed on a portion of the functional electrode and the piezoelectric layer.

  • Support substrate
  • Piezoelectric layer with functional electrodes
  • Cavity portion in the support
  • Functional electrode on the first main surface
  • Bulk wave device

Potential Applications

The technology could be used in:

  • Sensor devices
  • Acoustic wave filters
  • Communication devices

Problems Solved

The technology helps in:

  • Improving sensor sensitivity
  • Enhancing acoustic wave filtering
  • Increasing communication device efficiency

Benefits

The technology offers:

  • Higher performance in sensor applications
  • Improved signal processing in communication devices
  • Enhanced acoustic wave filtering capabilities

Potential Commercial Applications

The technology could be applied in:

  • Consumer electronics
  • Automotive industry
  • Telecommunications sector

Possible Prior Art

One possible prior art for this technology could be the use of piezoelectric devices in sensor applications.

Unanswered Questions

How does the size of the cavity portion impact the performance of the device?

The abstract does not provide information on how the size of the cavity portion affects the functionality of the piezoelectric bulk wave device.

What materials are used for the support substrate and functional electrodes?

The abstract does not specify the materials used for the support substrate and functional electrodes in the piezoelectric bulk wave device.


Original Abstract Submitted

A piezoelectric bulk wave device includes a support including a support substrate, a piezoelectric layer including a first main surface on the support side and a second main surface opposite from the first main surface, and at least one functional electrode including at least a portion on at least one of the first and second main surfaces. The at least one functional electrode is supported by the support and includes a functional electrode including a portion on the first main surface of the piezoelectric layer. A cavity portion is provided in the support and superposed on a portion of the functional electrode and an entirety or substantially an entirety of the piezoelectric layer in plan view. The piezoelectric layer is supported by the functional electrode supported by the support.

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