发明名称 |
Print board |
摘要 |
A plain layer in a forming area of a measuring wiring pattern is patterned so that its copper-containing amount may be coincided with a copper-containing amount in a forming area of a measurement target signal wiring pattern. Thereby, it is possible to coincide a thickness of an insulating layer in the forming area of the measuring wiring pattern with a thickness of the insulating layer in the forming area of the measurement target signal wiring pattern, thus reducing a measuring error of the characteristic impedance based on a difference of a thickness of the insulating layer. Using the measuring wiring pattern, it is possible to measure a correct characteristic impedance of the measurement target signal wiring pattern.
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申请公布号 |
US2001010274(A1) |
申请公布日期 |
2001.08.02 |
申请号 |
US20010771600 |
申请日期 |
2001.01.30 |
申请人 |
KABUSHIKI KAISHA TOSHIBA, AJINOMOTO CO., INC. |
发明人 |
KOGA YUICHI;DEGUCHI TAKAHIRO;NAKAMURA SHIGEO |
分类号 |
G01R27/04;G01R31/28;H01P3/08;H05K1/00;H05K1/02;H05K3/00;H05K3/46;(IPC1-7):H05K1/11 |
主分类号 |
G01R27/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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