Patent ID: 6800814
Filing Date: 2004-10-05
Classification: H05K

Abstract:
A multi-layered printed wiring board having at least three wiring layers, said wiring layers each having an outer edge, comprising:a ground line formed at the outer edge of at least one of said wiring layers; a ground pattern; a basic power supply line formed inside said ground line on the at least one of said wiring layers on which said ground line is formed; at least one power supply line extending from said basic power supply line; a plurality of electronic parts mounted on at least one of said wiring layers; a signal line; each of said wiring layers having at least two selected from the group consisting of said ground line or said ground pattern, said basic power supply line or said at least one power supply line, and said signal line; and wherein said at least one power supply line is wired to mounting positions of said electronic parts via at least one of said wiring layers, and said power supply line is formed inside said basic power supply line when said power supply line and said basic power supply line are projected on one projection plane.