Simple fiducial marking for quality verification of high density circuit board connectors
First Claim
Patent Images
1. A printed circuit board comprising:
- a printed pattern of fiducial marks on a first side of the printed circuit board including a first indicia including a right triangle with its base parallel and adjacent to a first edge of the board and an alignment mark adjacent thereto, and a second indicia including a right triangle with its base parallel and adjacent to a second edge of the board opposite said first edge, and an alignment mark adjacent thereto.
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Abstract
A printed circuit board with a printed pattern of fiducial marks on a first side of the printed circuit board including a first indicia including a right triangle with its base parallel to a first edge of the board and an alignment mark adjacent thereto, and a second indicia including a right triangle with its base parallel to a second edge of the board opposite said first edge, and an alignment mark adjacent thereto.
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Citations
14 Claims
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1. A printed circuit board comprising:
a printed pattern of fiducial marks on a first side of the printed circuit board including a first indicia including a right triangle with its base parallel and adjacent to a first edge of the board and an alignment mark adjacent thereto, and a second indicia including a right triangle with its base parallel and adjacent to a second edge of the board opposite said first edge, and an alignment mark adjacent thereto. - View Dependent Claims (2, 3)
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4. A planar printed circuit board having a first edge, a second edge opposite said first edge, and a third edge extending between said first and second edge;
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a printed circuit pattern imprinted on a first side of said circuit board using a mask pattern including a plurality of connector contact areas extending along said third edge and a first indicia including a right triangle with its base parallel and adjacent to a first edge of the board and an alignment mark adjacent thereto, and a second indicia including a right triangle with its base parallel and adjacent to a second edge of the board opposite said first edge, and an alignment mark adjacent thereto. - View Dependent Claims (5, 6)
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7. An optical transceiver for converting and coupling an information-containing electrical signal with an optical fiber comprising:
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a housing including a fiber optic connect adapted for coupling with an external optical fiber for transmitting and/or receiving an optical communications signal;
a rigid printed circuit board in the housing including an edge forming a connector for coupling with an external electrical cable or information system device and for transmitting and/or receiving an information-containing electrical communications signal; and
a first indicia including a right triangle with its base parallel and adjacent to a first edge of the board and an alignment mark adjacent thereto, and a second indicia including a right triangle with its base parallel and adjacent to a second edge of the board opposite said first edge, and an alignment mark adjacent thereto, for assuring the accuracy and alignment of the electrical contacts of the connector. - View Dependent Claims (8, 9, 10)
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11. A method of qualifying the accuracy of a printed circuit board comprising:
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providing a printing mask pattern for a first side of the printed circuit board with a first spaced indicia including a right triangle with its base parallel and adjacent to a first edge of the board; and
a second spaced indicia including a right triangle with its base parallel and adjacent to a second edge of the board opposite said first edge;
printing a layer of visually conspicuous material on a printed circuit board using said mask pattern;
determining the position of the apex of one indicia with respect to a corresponding alignment mark on the printed circuit board; and
based upon such position against a qualification criteria, accepting or rejecting the board. - View Dependent Claims (12, 13, 14)
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Specification