Patent ID: 9736945
Date: 2017-08-15
CPC Classifications: H01L,H05K

Claim:
1. A printed wiring board, comprising: an insulation layer comprising an insulative material; a plurality of conductive pads formed on the insulation layer such that the plurality of conductive pads is positioned to connect an electronic component; and a conductive wiring pattern comprising a first conductive pattern and a second conductive pattern and formed on the insulation layer such that the conductive wiring pattern is extending between the conductive pads, the first conductive pattern comprising a plurality of first wiring lines, the second conductive pattern comprising a plurality of second wiring lines, wherein the first conductive pattern and the second conductive pattern are formed such that the first wiring lines and the second wiring lines are alternately arrayed on the insulation layer, each of the first wiring lines comprises a first metal layer formed on an interface with the insulation layer, each of the second wiring lines comprises a second metal layer formed on an interface with the insulation layer, and the first metal layer comprises a metal material which is different from a metal material forming the second metal layer.