Patent ID: 6426469
Filing Date: 2002-07-30
Classification: G01R,H01P,H05K

Abstract:
A print board comprising:a patterned conductive layer which is patterned on a first insulating layer; a second insulating layer formed on said first insulting layer and patterned conductive layer; and a wiring pattern layer formed on said second insulating layer, wherein said wiring pattern layer comprises a measurement target signal wiring pattern for which characteristic impedance is to be measured and a measuring wiring pattern through which a measuring signal for measuring the characteristic impedance of said measurement target signal wiring pattern is flowed, and said patterned conductive layer comprises a first pattern above which said measurement target signal wiring pattern is formed and a second pattern above which said measuring wiring pattern is formed, the density of a conductive material first pattern being approximately the same as the density of a conductive material of said second pattern.