Storage system and printed circuit board
AssigneeHitachi, Ltd.
InventorMasatoshi Yoshihara
Life of this patent
Estimating the term…
Abstract
In the present invention, generation of occurrence of a wiring area is prevented, and a reflection by an inconsistency of a characteristic impedance of a high-speed signal line and a through hole connecting portion. By doing so, a conductor pattern of a raised shape is formed on each of front and back of a through hole, on a GND layer closest to the high-speed signal line in the vicinity of the connecting portion of the high-speed signal line and the through hole. Further, the conductor pattern is a trapezoidal shape, and is a shape which becomes wider as it becomes closer to the through hole.
Claims15
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, from before a connecting portion of the signal line and the through hole towards the connecting portion.
A printed circuit board, the printed circuit board comprising:
- a signal layer on which the signal line is formed;
- a GND layer;
- an insulating layer which is laminated on the GNS layer;
- and
- a through hole which connects the signal lines together;
- wherein a conductor pattern having a predetermined thickness is formed on the GND layer closest to the signal line, from before a connecting portion of the signal line and the through hole towards the connecting portion.
Dependencies are inferred from the claim text.