发明名称 CIRCUIT BOARD FOR HIGH-FREQUENCY SIGNAL
摘要 <P>PROBLEM TO BE SOLVED: To suppress attenuation of a high-frequency signal in a semiconductor device such as a CSP having rewiring to transmit the high-frequency signal. <P>SOLUTION: A dummy pad portion 2 is provided in the middle of the rewiring 24 for transmitting the high-frequency signal, on which a dummy post 28 is provided. Ground wiring 29, 30 are provided at both sides of a width direction of the rewiring 24, and the attenuation of the high-frequency signal is suppressed due to existence of the dummy pad portion 2 and the dummy post 28. <P>COPYRIGHT: (C)2008,JPO&INPIT
申请公布号 JP2008227518(A) 申请公布日期 2008.09.25
申请号 JP20080097782 申请日期 2008.04.04
申请人 CASIO COMPUT CO LTD 发明人 AOKI YOSHITAKA;NISHIZUMI SAYAKA
分类号 H01L23/12;H01L21/3205;H01L21/822;H01L23/52;H01L27/04 主分类号 H01L23/12
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