Title:
VIBRATING DIAPHRAGM, SOUND PRODUCTION DEVICE, MICROPHONE AND VIBRATING DIAPHRAGM MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/248625
Kind Code:
A1
Abstract:
The present invention relates to a vibrating diaphragm, which is applied to acoustoelectric interchange. The vibrating diaphragm comprises: a base material layer made of graphene or multilayer graphene; and a metal coating layer which is compounded on the base material layer. The material of the metal coating layer comprises at least two metals including titanium and beryllium or magnesium and lithium. Alternatively, the material of the metal coating layer is any one of the metals beryllium, titanium, aluminum, copper, silver, gold, magnesium and lithium. The vibrating diaphragm that is provided in the present invention has a good high-frequency, intermediate-frequency and low-frequency sound quality, has a high rigidity, small density, good heat dissipation performance, low Poisson's ratio, good internal sound speed, and is simple to manufacture and low in price.
Inventors:
WANG RONGFU (CN)
Application Number:
PCT/CN2020/102169
Publication Date:
December 16, 2021
Filing Date:
July 15, 2020
Export Citation:
Assignee:
SHENZHEN HANKE NEW MATERIAL TECH CO LTD (CN)
International Classes:
H04R7/10; H04R13/00
Foreign References:
| CN108419184A | 2018-08-17 | |||
| CN203327227U | 2013-12-04 | |||
| CN105323698A | 2016-02-10 | |||
| CN106060722A | 2016-10-26 | |||
| CN106131755A | 2016-11-16 | |||
| CN106131756A | 2016-11-16 | |||
| CN108622846A | 2018-10-09 | |||
| CN104053100A | 2014-09-17 | |||
| CN107409258A | 2017-11-28 |
Attorney, Agent or Firm:
BORSAM INTELLECTUAL PROPERTY LTD. (CN)
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