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Wearable sound detector based on piezoelectric film

A technology of piezoelectric film and sound detector, applied in piezoelectric devices/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc. Instability, high production cost and other problems, to achieve the effect of easy large-scale industrial production, low production cost and good mechanical properties

Active Publication Date: 2017-10-13
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the defects in the background technology, the present invention proposes a wearable sound detector based on piezoelectric film, which effectively solves the problem of poor extensibility, need for additional power drive, weak output signal, high production cost and wearable sound detector. Unstable performance during the process

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  • Wearable sound detector based on piezoelectric film
  • Wearable sound detector based on piezoelectric film
  • Wearable sound detector based on piezoelectric film

Examples

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Embodiment

[0032] The silica gel film (1-1, 1-2) of the wearable sound detector based on the piezoelectric film in this embodiment is PU (polyurethane film) with a thickness of about 50 μm; the piezoelectric material layer is PVDF (polyvinylidene fluoride) ethylene), with a thickness of about 100 μm; the material of the upper and lower metal layers is aluminum, with a thickness of 6 μm, which is deposited on the upper and lower surfaces of the piezoelectric material layer by sputtering or evaporation; the material of the extensible serpentine metal interconnection is Copper, the thickness is about 10μm; the metal conductive contact piece is made of copper, the thickness is 20μm; the Kapton tape is made of PI (polyimide), the thickness is about 65μm; the snake-shaped mesh structure is a quadrilateral checkerboard mosaic type snake-like network structure. Such as Figure 4 As shown, in a piezoelectric film-based wearable sound detector: L 1 = 1.56mm, W 1 = 0.78mm, α = 10°, R 1 = 1.56mm...

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Abstract

The invention discloses a wearable sound detector based on a piezoelectric film and belongs to the field of extendible bioelectronics. The piezoelectric film in the wearable sound detector adopts a checkerboard embedded snakelike mesh structure or a snakelike fractal structure and has a certain extensibility in use, and a sound signal of a person can be still stably detected under large-amplitude tension and bending. The wearable sound detector is low in device manufacturing cost and is easy to realize large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of extensible bioelectronics, in particular to a wearable sound detection device based on a piezoelectric film. Background technique [0002] With the continuous development of electronic technology, people have put forward new requirements for next-generation electronic products, such as the portability of daily electronic products, wearable and implantable biomedical electronics, etc. Wearable electronic devices have the advantages of stretching, bending, twisting, etc., which overcome the rigidity and brittleness of traditional rigid inorganic integrated devices, and have quickly become an important direction for the development of future electronic products. Sound detectors, that is, instruments for detecting sounds, play a pivotal role in the fields of sound recognition and sound decoding. However, traditional sound detectors are rigid and easily disturbed by noise, which limits their use in many human-related a...

Claims

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Application Information

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IPC IPC(8): H01L41/047H01L41/08H01L41/16
CPCH10N30/87H10N30/00H10N30/85
Inventor 林媛颜卓程潘泰松张虎林黄龙江家豪高敏
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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