Combined optical and electrical interconnection module and method for producing same
First Claim
Patent Images
1. A combined optical and electrical interconnection module, comprising:
- a flat cable comprising an optical transmission line and an electrical wire; and
a printed circuit board comprising a light receiving module for receiving optical signals and/or a light sending module for sending optical signals, and an optical waveguide for the optical signals to be transmitted therethrough,wherein the printed circuit board is electrically and optically connected to both ends or one end of the flat cable,the printed circuit board further comprises an optical transmission line groove for being engaged with a portion of the optical transmission line of the flat cable, an electrical wiring pattern for being electrically connected with the electrical wire of the flat cable, and an electrical wiring groove formed in an upper side of the printed circuit board relative to the electrical wiring pattern, the upper side being formed with the optical waveguide.
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Accused Products
Abstract
A combined optical and electrical interconnection module includes a flat cable comprising an optical transmission line and an electrical wire, and a printed circuit board including a light receiving module for receiving optical signals and/or a light sending module for sending optical signals and an optical waveguide for the optical signals to be transmitted therethrough or an optical block for bending the optical paths of the optical signals. The printed circuit board is electrically and optically connected to both ends or one end of the flat cable.
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Citations
9 Claims
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1. A combined optical and electrical interconnection module, comprising:
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a flat cable comprising an optical transmission line and an electrical wire; and a printed circuit board comprising a light receiving module for receiving optical signals and/or a light sending module for sending optical signals, and an optical waveguide for the optical signals to be transmitted therethrough, wherein the printed circuit board is electrically and optically connected to both ends or one end of the flat cable, the printed circuit board further comprises an optical transmission line groove for being engaged with a portion of the optical transmission line of the flat cable, an electrical wiring pattern for being electrically connected with the electrical wire of the flat cable, and an electrical wiring groove formed in an upper side of the printed circuit board relative to the electrical wiring pattern, the upper side being formed with the optical waveguide. - View Dependent Claims (3, 5)
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2. A combined optical and electrical interconnection module, comprising:
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a flat cable comprising an optical transmission line and an electrical wire; and a printed circuit board comprising a light receiving module for receiving optical signals and/or a light sending module for sending optical signals, and an optical block for bending the optical paths of the optical signals, wherein the printed circuit board is electrically and optically connected to both ends or one end of the flat cable, the printed circuit board further comprises an optical transmission line groove for being engaged with a portion of the optical transmission line of the flat cable, an electrical wiring pattern for being electrically connected with the electrical wire of the flat cable, and an electrical wiring groove formed in an upper side of the printed circuit board relative to the electrical wiring pattern, the upper side being formed with the optical transmission line groove. - View Dependent Claims (4, 6)
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7. A combined optical and electrical interconnection module, comprising:
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a flat cable comprising an optical transmission line and an electrical wire; and a printed circuit board comprising a light receiving module for receiving optical signals and/or a light sending module for sending optical signals, and an optical waveguide for the optical signals to be transmitted therethrough, wherein the printed circuit board is electrically and optically connected to both ends or one end of the flat cable, the printed circuit board is not more than 5 cm in length, and the optical transmission line of the flat cable is not less than 20 cm in length.
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8. A combined optical and electrical interconnection module, comprising:
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a flat cable comprising an optical transmission line and an electrical wire; and a printed circuit board comprising a light receiving module for receiving optical signals and/or a light sending module for sending optical signals, and an optical block for bending the optical paths of the optical signals, wherein the printed circuit board is electrically and optically connected to both ends or one end of the flat cable, the printed circuit board is not more than 5 cm in length, and the optical transmission line of the flat cable is not less than 20 cm in length.
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9. A method for producing a combined optical and electrical interconnection module, comprising:
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arranging a plurality of optical transmission lines in its middle, and a plurality of electrical wires on both sides of the plural optical transmission lines; pressure bonding thereto two coverings formed with openings having a specified gap therebetween, in such a manner as to sandwich upper and lower surfaces of the optical transmission lines and the electrical wires between the two coverings, to produce a flat cable; removing portions of the optical transmission lines and the electrical wires in the openings in the flat cable formed with the openings having the specified gap therebetween; removing the coverings on the optical transmission lines and the electrical wires in the openings in the flat cable to bare the optical transmission lines and the electrical wires to protrude from end faces of the flat cable; structuring a printed circuit board, the printed circuit board having electrical wiring layers laminated with an insulating layer therebetween, the laminated electrical wiring layers being electrically connected with each other through a through hole, a surface of one of the electrical wiring layers being formed with an optical waveguide layer for optical signals to be transmitted therethrough; forming in a portion of the optical waveguide a reflective portion for bending the optical paths of the optical signals, and mounting, on a surface of an other of the electrical wiring layers above the reflective portion, a light receiving module for receiving optical signals and/or a light sending module for sending optical signals; forming optical transmission line grooves in the printed circuit board, to be engaged onto the optical transmission lines respectively protruding from the flat cable, and thereby connected and fixed thereto with an optical adhesive, to optically connect the light receiving module and/or the light sending module and the optical transmission lines; forming an electrical connector at an opposite end face of the printed circuit board to its end face with the optical transmission line grooves formed therein; forming, in the printed circuit board, electrical wiring grooves and electrical wiring patterns therein, to regulate the electrical wires of the flat cable to be positioned into the electrical wiring grooves, and thereby electrically connected and fixed to the electrical wiring patterns, respectively, with solder or a conductive adhesive; after the joining of the flat cable and the printed circuit board, covering the printed circuit board and a portion of the flat cable with a protective member; and cutting the printed circuit board between the light receiving module or the light sending module and the light sending module or the light receiving module.
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Specification