| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the generation of high-frequency noise in a power supply by a method wherein a capacitor for removing the high-frequency noise generated in the power supply is made unnecessary to lower the inductance of a circuit itself, in a multilayer wiring circuit substrate. <P>SOLUTION: When a parts mounting surface or the uppermost surface layer is specified as a first layer, one side of a ground layer and the same of a power supply layer are arranged on a second layer while the other sides of them are arranged on a third layer, and an insulation film is arranged between the ground layer and the power supply layer. <P>COPYRIGHT: (C)2003,JPO |
