Patent ID: 7348492

Claim:
A bent flexible wiring board comprising: a bent flexible insulating substrate; first bent wiring provided on one surface of the insulating substrate; first bent insulative protecting film, provided on one surface of the insulating substrate, for protecting the first wiring; second bent wiring provided on the other surface of the insulating substrate; second bent insulative protecting film, provided on the other surface of the insulating substrate, for protecting the second wiring; and a terminal portion, provided on at least one of the first wiring and the second wiring at an end thereof, to be connected to an external electrical component, wherein: said first insulative protecting film and said second insulative protecting film are both polymer film, and are placed to cover the first wiring and the second wiring except for at least the terminal portion, and are bonded with the insulating substrate via an adhesive, at least one of said first insulative protecting film and said second insulative protecting film, which is connected to the surface on which the terminal portion is provided is thinner than the insulating substrate, said terminal portion is provided only on the first wiring, and an end of the second insulative protecting film closer to the terminal portion, the second insulative protecting film being on a side of the substrate opposite the terminal portion, is farther away from an end of the insulating substrate where the terminal portion is provided than an end of the first insulative protecting film closer to the terminal portion.