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Pressure wave generating element and method for producing the same

專利號
US11968498B2
公開日期
2024-04-23
申請人
Murata Manufacturing Co., Ltd.（JP Nagaokakyo）
發(fā)明人
Kohei Fukamachi
IPC分類
H04R23/00; H04R7/04; H04R7/16; H04R31/00
技術(shù)領(lǐng)域
fiber,fibers,heat,generating,membrane,was,pressure,sound,metal,sample
地域： Nagaokakyo

摘要

A pressure wave generating element is provided that includes a support and a heat generating layer that is provided on the support and generates heat by energization. Moreover, the heat generating layer includes a fiber with at least a partial metal coating on a surface.

說明書

Element Sound coated resistance pressure Element structure fibers (Ω) ratio Sample 3 Au coated PVA 228 nm 811.1 48.3 fiber/SiO2/Si Sample 4 Au coated PVA 265 nm ?12.7 20.3 fiber/SiO2/Si Sample 5 Au coated PVA 422 nm ?2.8 ?9.4 fiber/SiO2/Si

From the results in Table 3, it is shown that the sound pressure is further improved as the metal-coated fiber diameter decreases in the case of using the heat generating layer containing an Au-coated PVA fiber.

Example 4

(Sample Preparation Method)

A pressure wave generating element was produced by the following method (Sample 6).

權(quán)利要求

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