Patent ID: 6969808

Claim:
A multi-layer wiring board comprising: a plurality of electrically conducting layers laminated in a stack, with electrical insulation intervening between each closest pair of electrically conducting layers, said electrically conducting layers including a power supply layer, at least two signal layers, and a plurality of ground layers, alternating layers in said stack being ground layers; a plurality of electrically conducting ground through-holes having respective centers, penetrating through said stack, and electrically connecting said ground layers to each other; and an electrically conducting signal through-hole penetrating through said stack and electrically connecting said signal layers together, wherein at least one of said signal layers includes a land having a center and surrounding and electrically connected to said signal through-hole, and a signal line extending from and electrically connected to said land, said land includes a pair of first portions extending outwardly from opposite sides of said signal through-hole, said pair of first portions defining a first width of said land and lying generally transverse to a first diameter of said land, the first diameter passing through the center of said land, said land includes a pair of second portions extending outwardly from opposite sides of said signal through-hole, said pair of second portions defining a second width of said land and lying generally transverse to a second diameter of said land, and the first and second diameters are not co-linear, the second width is shorter than the first width, and the second diameter lies on a line connecting the center of said land and the center of said ground through-hole closest to said signal through-hole.