发明申请
- 专利标题： ELECTROMAGNETIC NOISE SUPPRESSION SHEET, FLAT CABLE FOR HIGH-FREQUENCY SIGNALS, FLEXIBLE PRINTED CIRCUIT BOARD, AND PROCESS FOR PRODUCING THE ELECTROMAGNETIC NOISE SUPPRESSION SHEET
- 专利标题（中）： 电磁噪声抑制片，高频信号用平板电缆，柔性印刷电路板及制造电磁噪声抑制片的方法
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申请号： US12594986申请日： 2008-04-10
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公开(公告)号： US20100181107A1公开(公告)日： 2010-07-22
- 发明人: Kazumi Yamamoto , Tetsuya Kimura
- 申请人： Kazumi Yamamoto , Tetsuya Kimura
- 优先权： JP2007-104349 20070411
- 国际申请： PCT/JP2008/000939 WO 20080410
- 主分类号： H05K9/00
- IPC分类号： H05K9/00 ; B32B5/16
摘要：
An electromagnetic noise suppression sheet obtained by using combination of a conductive carbon and spinel ferrite particles having a cumulative 50% volume particle diameter of 1 to 10 μm, can exhibit an excellent transmission attenuation power ratio and a reduced return loss in a near electromagnetic field, and is suitable for high-density mounting. The electromagnetic noise suppression sheet of the present invention can be produced by the process of the present invention which includes the steps of applying a coating material in which the conductive carbon and the spinel ferrite particles having a cumulative 50% volume particle diameter of 1 to 10 μm are dispersed, to form a coating film having a thickness of 10 to 100 μm after dried, and subjecting the resulting coating film to thermoforming under pressure.