Patent ID: 8867230
Filing Date: 2014-10-21
Classification: G11C,H01L,H05K

Abstract:
1. A storage system, the storage system comprising: a first controller; a second controller; and a printed circuit board on which a signal line electrically connecting the first controller and the second controller is formed; wherein the printed circuit board comprises a signal layer on which the signal line is formed; a GND layer; an insulating layer which is layered on the GND layer; and a through hole which connects the signal lines together; and wherein a conductor pattern having a predetermined thickness is formed on the GND layer closest to the signal line, away from a connecting portion of the signal line and the through hole, and towards the connecting portion; wherein the signal line is a differential signal; and wherein the conductor pattern is a stepwise shape with an identical width, which becomes thicker in a stepwise matter towards the connecting portion of the signal line and the through hole.