Patent ID: 9029708
Filing Date: 2015-05-12
Classification: H05K,Y10T

Abstract:
1. A printed circuit board comprising: a metal support substrate; a base insulating layer formed on said metal support substrate; first and second wiring patterns formed on said base insulating layer and constituting a signal line pair; a cover insulating layer formed on said base insulating layer to cover at least part of said first and second wiring patterns; and a ground layer provided on said cover insulating layer to be positioned above said first and second wiring patterns, wherein said first wiring pattern includes first and second lines having ends, said second wiring pattern includes third and fourth lines having ends, one of the ends of each of said first and second lines is electrically connected to each other, and an other ends of each of said first and second lines is electrically connected to each other, one of the ends of each of said third and fourth lines is electrically connected to each other, and an other end of each of said third and fourth lines is electrically connected to each other, and any one of said first and second lines is arranged between said third and fourth lines, and any one of said third and fourth lines is arranged between said first and second lines, wherein a first intersection region in which said first or second line of said first wiring pattern and said third or fourth line of said second wiring pattern intersect with each other is provided, a second intersection region in which said first or second line of said first wiring pattern and said third or fourth line of said second wiring pattern intersect with each other is provided, a portion of said first or second line of said first wiring pattern arranged in said first intersection region is divided, a portion of said third or fourth line of said second wiring pattern arranged in said first intersection region is arranged on said base insulating layer to pass through a portion in between divided portions of said first or second line of said first wiring pattern, said cover insulating layer includes a first cover portion having first and second through holes and provided to cover said first and second wiring patterns in said first intersection region, said ground layer has a first connection region provided on said first cover portion and electrically separated from other regions of said ground layer, one of said divided portions of said first or second line of said first wiring pattern is electrically connected to said first connection region through said first through hole of said first cover portion, and the other one of said divided portions of said first or second line of said first wiring pattern is electrically connected to said first connection region through said second through hole of said first cover portion.