Laminated circuit board device
AssigneeYazaki Corporation
InventorTsunehiro WATANABE
Life of this patent
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Abstract
A circuit pattern of a power line and a circuit pattern of a signal line are disposed in a first layer of a laminated circuit board device, a circuit pattern of the signal line to be protected is disposed in a second layer, and a circuit pattern of a power line is disposed in a third layer. The shapes of the first circuit pattern of the power line of the first layer and the second circuit pattern of the power line of the third layer are substantially matched with each other with respect to a portion of the second layer lacing the circuit pattern of the signal line. The direction of the current of the first circuit pattern coincides with the direction of the current of the second circuit pattern.
Claims5
A laminated circuit board device, comprising
- a first layer, a second layer, and a third layer, wherein
- the first layer, the second layer, and the third layer are separated by an insulator, and the second layer is disposed between the first layer and the third layer,
- patterns of the first layer, the second layer, and the third layer are formed on different surfaces parallel to each other by a foil-like conductor,
- the circuit pattern includes a circuit pattern of an electric power system for passing a current flowing between a predetermined power source and a predetermined load, and a circuit pattern of a signal system through which a current smaller than that of the power system passes,
- the circuit pattern of the electric power system and the circuit pattern of the signal system are disposed in the first layer, respectively,
- the circuit pattern of the signal system is disposed in the second layer, and
- the circuit pattern of the electric power system is disposed in the third layer,
- the circuit pattern is formed such that shapes of a first circuit pattern belonging to the electric power system of the first layer and a second circuit pattern belonging to the electric power system of the third layer substantially coincide with each other, for a facing portion facing a protection portion of at least a part of the circuit pattern of the signal system in the second layer,
- the specification is defined such that a direction of the current flowing through the first circuit pattern and a direction of the current flowing through the second circuit pattern coincide with each other
Dependencies are inferred from the claim text.