Patent ID: 9179539
Filing Date: 2015-11-03
Classification: H01L,H05K

Abstract:
1. A wiring board, comprising: a first wiring line formed on a substrate; a first land formed at a connection portion of the first wiring line and structured with a wiring pattern of a single wiring line; a second wiring line formed on the substrate and having a longer wiring length than the first wiring line; a second land formed at a connection portion of the second wiring line and structured with a wiring pattern having a substantially identical shape as the wiring pattern of the first land; a first pad electrode formed on the first land through an insulating film; a second pad electrode formed on the second land through the insulating film having a substantially identical shape as the first pad electrode; at least one first interlayer connection via embedded in the insulating film and electrically connecting a first portion of the first land to the first pad electrode; and at least one second interlayer connection via embedded in the insulating film and electrically connecting a second portion of the second land to the second pad electrode, wherein a wiring length of the wiring pattern of the first land between the connection portion of the first wiring line and the first portion is longer than the wiring length of the wiring pattern of the second land between the connection portion of the second wiring line and the second portion.