Murata manufacturing co., ltd. (20240313741). ACOUSTIC WAVE DEVICE simplified abstract

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 20240313741 titled 'ACOUSTIC WAVE DEVICE

The abstract describes an acoustic wave device with two piezoelectric layers and an IDT electrode. The second piezoelectric layer is positioned above the first layer, and the IDT electrode consists of opposing busbar electrodes and electrode fingers that overlap in a perpendicular direction.

• The device includes first and second piezoelectric layers and an IDT electrode.
• The second piezoelectric layer is located above the first layer.
• The IDT electrode has opposing busbar electrodes and electrode fingers.
• The electrode fingers extend towards each other and are sandwiched between the piezoelectric layers.
• The electrode fingers overlap in a perpendicular direction.

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

Problems Solved: - Provides a compact and efficient design for acoustic wave devices. - Enhances the performance and sensitivity of acoustic wave devices.

Benefits: - Improved functionality and performance of acoustic wave devices. - Compact design for space-saving applications. - Enhanced sensitivity and accuracy in acoustic wave sensing.

Commercial Applications: - Potential commercial uses include in telecommunications, medical devices, and industrial sensors.

Questions about the technology: 1. How does the overlapping of electrode fingers improve the performance of the acoustic wave device? 2. What are the specific advantages of having two piezoelectric layers in this device?

Original Abstract Submitted

an acoustic wave device includes first and second piezoelectric layers and an idt electrode. the second piezoelectric layer is located above the first piezoelectric layer in a first direction. the idt electrode includes first and second busbar electrodes and first and second electrode fingers. the first and second busbar electrodes oppose each other. the first electrode finger is provided to the first busbar electrode and extends toward the second busbar electrode. the second electrode finger is provided to the second busbar electrode and extends toward the first busbar electrode. the first and second electrode fingers are sandwiched between the first and second piezoelectric layers in the first direction. the first and second electrode fingers extend in a second direction which intersects with the first direction and are located to overlap each other as seen in a third direction perpendicular or substantially perpendicular to the second direction.