Flexible printed circuit

Details Flexible printed circuit Flexible printed circuit

2005-06-28

2005-06-28

Chambliss, Alonzo (Department: 2814)

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

C257S729000, C361S750000

Reexamination Certificate

active

06911605

ABSTRACT:
In order to provide low-cost, long fatigue life flexible printed circuit, low profile electrolytic foil is used as copper foil for a circuit3of the flexible printed circuit10. Crack which does not penetrate the copper foil should preferably be formed on the low profile electrolytic foil. For methods to form cracks on the low profile electrolytic foil, methods such as pre-bending and etching can be employed. Due to the weakness of the low profile electrolytic foil, the base film1, the cover layer5, and the bonding agent2, 4which are disposed on the both sides of the low profile electrolytic foil should preferably be plastic film of which elasticity ratio is equal to 108Pa or more.

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