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    • 34. 发明专利
    • Printed circuit board and method of mounting component on the same
    • 印刷电路板及其组件安装方法
    • JP2009027180A
    • 2009-02-05
    • JP2008211543
    • 2008-08-20
    • Samsung Electronics Co Ltd三星電子株式会社Samsung Electronics Co.,Ltd.
    • KAKU JINKYUKIM SHIKUN
    • H05K1/02H03H7/01H03H7/06H05K1/00H05K1/18H05K3/46H05K7/06H05K7/20
    • H05K1/0233H05K2201/1006H05K2201/10689
    • PROBLEM TO BE SOLVED: To provide a printed circuit board capable of suppressing EMI radiation. SOLUTION: The printed circuit board includes: an integrated circuit 300 which is disposed on a surface of one of a top layer and a bottom layer and is provided with a clock pin 300a for outputting a clock signal and a first ground pin 300b; and an RC filter 310 including a resistor 320 and one capacitor 330 in order to eliminate high frequency components of the clock signal. One end of the capacitor 330 is connected to the resistor 320 by wiring, and a second ground pin 330a at the other end of the capacitor 330 is disposed to face the first ground pin 300b, and the capacitor 330 is disposed between wiring and the first ground pin 300b, and no wiring is formed on a ground fill in a current return path directly connecting the second ground pin 330a to the first ground pin 300b, and the capacitor 330 is disposed on the same layer as the integrated circuit 300, out of the top layer and the bottom layer. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够抑制EMI辐射的印刷电路板。 解决方案:印刷电路板包括:集成电路300,其设置在顶层和底层之一的表面上,并且设置有用于输出时钟信号的时钟引脚300a和用于输出时钟信号的第一接地引脚300b ; 以及包括电阻器320和一个电容器330的RC滤波器310,以便消除时钟信号的高频分量。 电容器330的一端通过布线连接到电阻器320,并且电容器330的另一端的第二接地引脚330a设置为面对第一接地引脚300b,并且电容器330设置在布线和第一 接地引脚300b,并且在直接连接第二接地引脚330a到第一接地引脚300b的电流返回路径的接地填充物上不形成布线,并且电容器330设置在与集成电路300相同的层上, 顶层和底层。 版权所有(C)2009,JPO&INPIT