PRINTED CIRCUIT BOARD AND METHOD OF MANUFACTURING THE SAME
First Claim
Patent Images
1. A printed circuit board comprising:
- an insulating layer;
first and second wiring patterns that are formed on one surface of said insulating layer and constitute a signal line pair; and
a first connecting layer that is provided on the other surface of said insulating layer, whereinsaid first wiring pattern has first and second lines,said second wiring pattern has third and fourth lines,one ends of said first and second lines are electrically connected to each other and the other ends of said first and second lines are electrically connected to each other,one ends of said third and fourth lines are electrically connected to each other and the other ends of said third and fourth lines are electrically connected to each other,said first and second lines of said first wiring pattern and said third and fourth lines of said second wiring pattern are arranged such that any one of said first and second lines is located between said third and fourth lines and any one of said third and fourth lines is located between said first and second lines,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 positioned in said first intersection region is divided, a portion of said third or fourth line of said second wiring pattern positioned in said first intersection region is arranged on said insulating layer to pass through a portion in between divided portions of said first or second line of the first wiring pattern,said insulating layer has first and second through holes in said first intersection region, one of said divided portions of said first or second line of the first wiring pattern is electrically connected to said first connecting layer through said first through hole, and the other of said divided portions of said first or second line of the first wiring pattern is electrically connected to said first connecting layer through said second through hole.
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Accused Products
Abstract
An end of a first line and an end of a second line of a first write wiring pattern are arranged on both sides of a third line of a second write wiring pattern. Circular connection portions are provided at the ends of the first line and the second line. In addition, through holes are formed in respective portions of a base insulating layer below the connection portions. Each connection portion comes in contact with a connecting region of a suspension body within the through hole.
25 Citations
6 Claims
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1. A printed circuit board comprising:
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an insulating layer; first and second wiring patterns that are formed on one surface of said insulating layer and constitute a signal line pair; and a first connecting layer that is provided on the other surface of said insulating layer, wherein said first wiring pattern has first and second lines, said second wiring pattern has third and fourth lines, one ends of said first and second lines are electrically connected to each other and the other ends of said first and second lines are electrically connected to each other, one ends of said third and fourth lines are electrically connected to each other and the other ends of said third and fourth lines are electrically connected to each other, said first and second lines of said first wiring pattern and said third and fourth lines of said second wiring pattern are arranged such that any one of said first and second lines is located between said third and fourth lines and any one of said third and fourth lines is located between said first and second lines, 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 positioned in said first intersection region is divided, a portion of said third or fourth line of said second wiring pattern positioned in said first intersection region is arranged on said insulating layer to pass through a portion in between divided portions of said first or second line of the first wiring pattern, said insulating layer has first and second through holes in said first intersection region, one of said divided portions of said first or second line of the first wiring pattern is electrically connected to said first connecting layer through said first through hole, and the other of said divided portions of said first or second line of the first wiring pattern is electrically connected to said first connecting layer through said second through hole. - View Dependent Claims (2, 3, 4, 5)
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6. A method of manufacturing a printed circuit board, comprising the steps of:
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forming first and second wiring patterns constituting a signal line pair on one surface of an insulating layer; and forming a connecting layer on the other surface of said insulating layer, wherein the step of forming said first and second wiring patterns includes the steps of forming first and second through holes in said insulating layer in a first intersection region, and forming said first and second wiring patterns on said insulating layer such that said first wiring pattern is composed of first and second lines and said second wiring pattern is composed of third and fourth lines, said first and second lines of said first wiring pattern and said third and fourth lines of said second wiring pattern are arranged such that any one of said first and second lines is located between said third and fourth lines and any one of said third and fourth lines is located between said first and second lines, 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 in the first intersection region and 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 in a second intersection region, one ends of said first and second lines are electrically connected to each other, the other ends of said first and second lines are electrically connected to each other, one ends of said third and fourth lines are electrically connected to each other, the other ends of said third and fourth lines are electrically connected to each other, a portion of said first or second line of said first wiring pattern positioned in said first intersection region is divided, a portion of said third or fourth line of said second wiring pattern positioned in said first intersection region passes through a portion in between divided portions of said first or second line of said first wiring pattern on said insulating layer, one of said divided portions of said first or second line of said first wiring pattern is electrically connected to said connecting layer through said first through hole, and the other of said divided portions of said first or second line of said first wiring pattern is electrically connected to said connecting layer through said second through hole.
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Specification