RIGID-FLEX CIRCUIT BOARD AND MANUFACTURING METHOD
First Claim
1. A cost effective rigid-flex circuit board comprising:
- A flexible section for interconnect which consists of at least one improved flexible flat cable, and;
a plurality of rigid sections for component mounting which content of at least one rigid printed circuit board or one flexible printed circuit board.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein is a cost effective rigid- flex circuit board comprising a flexible section which contents at least one flexible flat cable for interconnect, and a plurality of rigid sections which consists of at least one rigid printed circuit board (8) for components mounting. The improved flexible flat cable comprising at least one layer of flat wires laminated with a plurality of insulating material. The flat wires having non-uniform width and pitch are folded with different angle along the length to resemble wiring patterns of a typical flexible printed circuit board. The rigid section consists of at least one piece of rigid printed circuit board having at least one layer of circuit pattern.
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Citations
8 Claims
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1. A cost effective rigid-flex circuit board comprising:
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A flexible section for interconnect which consists of at least one improved flexible flat cable, and; a plurality of rigid sections for component mounting which content of at least one rigid printed circuit board or one flexible printed circuit board. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of fabricating an improved flexible flat cable for the interconnects section of a rigid-flex circuit board comprising the step of:
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Providing a flat wire separating guide-roll assembly containing more than one separator discs having various widths. The first disc is aligned next to the following discs in a row along a shaft; Both ends of the shaft are housed by bearings. Flat wires having various width and insulation film are fed into a flexible flat cable laminating apparatus to form a flat cable roll; Selectively bonding the said flat cable ends with different stiffener width and thickness to make connecting terminals. The other end of the cable may form connecting pads; The said flat cable roll is cut to a required length to form an individual single-sided terminals flat cable and is further slit to separate wire groups. The separated wire groups are folded to required angles and terminated with appropriate type of terminals to produce an improved flexible flat cable; The said improved flexible flat cable terminal ends can further interconnect with printed circuit boards to form a rigid-flex circuit board. - View Dependent Claims (8)
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Specification