Flexible printed circuit board

Details Flexible printed circuit board Flexible printed circuit board

1987-09-29

1988-11-01

Kittle, John E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428545, 428567, 428596, 428601, 428615, 428650, 428901, 174 52FP, 174 685, 156902, 29829, 361398, B32B 900, B22F 300, B22C 2322

Patent

active

047819693

ABSTRACT:
A printed circuit board is provided wherein a composite metal layer is affixed to at least one surface of a flexible dielectric substrate, the composite metal layer comprising an inner aluminum layer and an outer copper layer. Owing to the relatively high elongation of the aluminum layer, when the printed circuit board is flexed the circuit thereon does not crack.

REFERENCES:
patent: 4521476 (1985-06-01), Asai et al.
patent: 4568413 (1986-02-01), Toth et al.
patent: 4633035 (1986-12-01), McMonogle
IBM Tech. Disclosure Bulletin, vol. 12, No. 4, 9-69, p. 559, Rounded Plate Through Holes, Sparrhake.

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