发明公开
- 专利标题: Method of and apparatus for manufacturing a crystalline diamond film for use as an acoustic diaphragm
- 专利标题(中): 声振膜及其制造方法
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申请号: EP89108111.9申请日: 1989-05-05
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公开(公告)号: EP0341589A3公开(公告)日: 1991-11-21
- 发明人: Sakamoto, Masakatu , Yaguchi, Youichi , Toshima, Hiroaki , Kotaki, Toshiroh
- 申请人: KABUSHIKI KAISHA KENWOOD , NAMIKI PRECISION JEWEL CO., LTD.
- 申请人地址: 2-5, Shibuya 1-chome Shibuya-ku Tokyo 150 JP
- 专利权人: KABUSHIKI KAISHA KENWOOD,NAMIKI PRECISION JEWEL CO., LTD.
- 当前专利权人: KABUSHIKI KAISHA KENWOOD,NAMIKI PRECISION JEWEL CO., LTD.
- 当前专利权人地址: 2-5, Shibuya 1-chome Shibuya-ku Tokyo 150 JP
- 代理机构: Patentanwälte Leinweber & Zimmermann
- 优先权: JP110510/88 19880509
- 主分类号: H04R7/02
- IPC分类号: H04R7/02 ; H04R31/00
摘要:
An acoustic diaphragm is made of a crystalline diamond film formed on at least one side of a ceramic diaphragm base member formed in the shape of diaphragm, the crystalline diamond film being formed by thermal-plasma emitting a mixture gas composed of argon, hydrocarbon and hydrogen onto the base member.
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