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专利名称：Printed circuit board for real-time clock IC
and manufacturing method for printedcircuit board for real-time clock IC
发明人：Yasuo Funato申请号：US11506905申请日：20060821
公开号：US20070046312A1公开日：20070301
专利附图：
摘要：According to one embodiment, a printed circuit board for a real-time clock ICincludes a plurality of wiring layers sequentially laminated to form one substrata and
including at least one layer which forms an oscillator circuit pattern having a crystaloscillator generating a reference signal and an oscillation stabilizing portion whichstabilizes and oscillates the reference signal and adjusts the oscillation frequency to atarget frequency, and a power supply layer arranged in at least one of a positionbetween the plurality of wiring layers and front and rear surfaces of the substrate, andforming a power supply circuit pattern which supplies electric power to a circuit on thesubstrate and removing a portion of the power supply circuit pattern which has width notsmaller than width of the oscillator circuit pattern in a portion of the power supply circuitpattern which overlaps with the oscillator circuit pattern.
申请人：Yasuo Funato
地址：Saitama-shi JP
国籍：JP
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