Title:
VIBRATING DIAPHRAGM, SOUND GENERATION DEVICE, MICROPHONE ASSEMBLY, AND METHOD FOR MAKING VIBRATING DIAPHRAGM
Document Type and Number:
WIPO Patent Application WO/2021/248838
Kind Code:
A1
Abstract:
The present invention relates to a vibrating diaphragm for acoustoelectric inter-conversion, the vibrating diaphragm comprising a substrate layer made of graphene or multiple layers of graphene, and a metal plating layer, wherein the metal plating layer is composited on the substrate layer. The material of the metal plating layer comprises at least two metals, including the two metals titanium and beryllium, or including the two metals magnesium and lithium. Alternatively, the material of the metal plating layer is any metal of beryllium, titanium, aluminum, copper, silver, gold, magnesium and lithium. The invention provides a vibrating diaphragm having a high rigidity, a low density, good heat dissipation properties, a low Poisson ratio, a good internal sound velocity, simple production, a low price, and an excellent sound quality in terms of high, middle and low frequencies.
Inventors:
WANG RONGFU (CN)
Application Number:
PCT/CN2020/130472
Publication Date:
December 16, 2021
Filing Date:
November 20, 2020
Export Citation:
Assignee:
SHENZHEN HANKE NEW MATERIAL TECH CO LTD (CN)
International Classes:
H04R7/10
Domestic Patent References:
| WO2013035900A1 | 2013-03-14 |
Foreign References:
| CN111818425A | 2020-10-23 | |||
| CN107409258A | 2017-11-28 | |||
| CN102802109A | 2012-11-28 | |||
| CN107532938A | 2018-01-02 |
Attorney, Agent or Firm:
WUHAN ZHIQUAN PATENT AGENT, LLP. (CN)
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