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Patent Searching and Data


Title:
MANUFACTURING METHOD FOR DIAMOND-LIKE CARBON VIBRATING DIAPHRAGM AND LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2018/157274
Kind Code:
A1
Abstract:
The present invention relates to a manufacturing method for a diamond-like carbon diaphragm, comprising the steps of: placing a base material in the air, the base material being a high polymer material; a step of depositing a composite diamond-like carbon diaphragm comprises: at a temperature condition of less than 90°C, importing a carbon-containing gas from one end of an atmospheric pressure plasma chemical vapor deposition device, and providing a voltage of more than 5 kV and less than 10 kV to ionize the carbon-containing gas; importing a main gas from the other end of the atmospheric pressure plasma chemical vapor deposition device; bringing the ionized carbon-containing gas out of the atmospheric pressure plasma chemical vapor deposition device by the main gas and depositing the same on the surface of the base material to form a composite diamond-like carbon diaphragm; a step of forming a diamond-like carbon vibrating diaphragm comprises: cutting from the composite diamond-like carbon diaphragm a diamond-like carbon vibrating diaphragm having the required diameter, forming a diamond-like carbon vibrating diaphragm having the required shape by means of a compressing process; or compressing the composite diamond-like carbon diaphragm by means of the compressing process to form a diamond-like carbon vibrating diaphragm having the required shape and diameter, and cutting the diamond-like carbon vibrating diaphragm. Compared with conventional manufacturing methods assisted by plasma enhanced chemical vapor deposition and physical vapor deposition, the manufacturing method for a diamond-like carbon vibrating diaphragm according to the present invention may deposit the diamond-like carbon vibrating diaphragm in environments of high atmospheric pressure and low temperature without needing to configure a vacuum cavity and a vacuum device, thereby simplifying the manufacturing processes. Moreover, in a low temperature environment, a diaphragm break caused by high temperature or the diaphragm wrinkling due to thermal deformation may be avoided, and the formed diamond-like carbon vibrating diaphragm is more flat.

Inventors:
CHIU SHIHCHIA (CN)
YANG LEI (CN)
Application Number:
PCT/CN2017/075106
Publication Date:
September 07, 2018
Filing Date:
February 28, 2017
Export Citation:
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Assignee:
1MORE INC (CN)
International Classes:
H04R9/06; C23C16/26
Foreign References:
CN102560413A2012-07-11
CN102390607A2012-03-28
CN101886252A2010-11-17
CN105283581A2016-01-27
CN101649450A2010-02-17
DE102016200367B32017-02-02
Other References:
See also references of EP 3591994A4
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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