High performance transparent piezoelectric transducers as an additional sound source for personal audio devices
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United States of America Patent
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Aug 2, 2022
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app pub date -
Dec 22, 2020
filing date -
Dec 22, 2020
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Abstract
An audio system comprises an array of transparent piezoelectric transducers on a transparent surface. Each transparent piezoelectric transducer includes one or more piezoelectric layers and one or more conductive layers that are substantially transparent to visible light. A transparent piezoelectric transducer may include, e.g., a first conductive layer, a first piezoelectric layer on the first conductive layer, and a second conductive layer on the first piezoelectric layer. Or in another example, the transparent piezoelectric transducer includes many (e.g., 20-30) piezoelectric layers and many (e.g., 20-30) conductive layers.
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