| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To contribute to improvement in operation reliability of a mounted semiconductor element etc., by reducing ESL of a mounted capacitor and performing effective decoupling. <P>SOLUTION: On the capacitor mounting wiring board 10b, a plurality of wiring layers 14a and 14b, 16a and 16b, and 18a and 18b patterned in necessary shapes respectively are laminated with insulating layers 15a and 15b, and 17a and 17b interposed, and connected to each other through conductors formed penetrating the insulating layers along the thicknesses. A capacitor 1 for decoupling is electrically connected to the wiring layers in vicinity to the wiring layer 18a as the outermost layer provided as a power line or ground line, and surface-mounted such that when a current flows to the capacitor 1, the direction of the current is opposite to the direction of a current flowing to the wiring layer 18a and a path of the current flowing to the capacitor is substantially parallel to a path of the current flowing to the wiring layer. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
