Method of fabricating a beam lead flexible circuit

Details Method of fabricating a beam lead flexible circuit Method of fabricating a beam lead flexible circuit

1975-12-18

1977-10-11

Van Horn, Charles E.

Metal working

Method of mechanical manufacture

Electrical device making

29577R, 29625, 96 362, 156631, 156634, 204 38B, 427 98, H05K 330

Patent

active

040527875

ABSTRACT:
A method for producing beam leads, i.e. electrical contacts, on flexible circuits or multilayer circuits for interconnecting devices is disclosed. The method consists of processing a metal foil to expose a beam lead interconnection pattern, plating the exposed pattern with metal, coating a base insulating layer with an adhesive, punching cavities in the adhesive coated insulating layer, engaging the coated side of the base insulating layer to the metal foil, and applying a cushioning material on the opposite side of the adhesive coated insulating layer. The metal foil and the insulating layer are then laminated causing the cushioning material to flow into the pre-punched cavities thereby providing a protective cushioning-type backing for the metal-plated beam lead interconnection pattern. The exposed metal foil is etched away, the photoresist is removed and the cushioning material is stripped off the insulating layer leaving beam leads extending over the cavity for a device which can have the beam leads connected to its contacts (pads).

REFERENCES:
patent: 3649475 (1972-03-01), Degnan et al.
patent: 3666549 (1972-05-01), Rhodenizer et al.
patent: 3680209 (1972-08-01), Hacke
patent: 3689991 (1972-09-01), Aird
patent: 3931922 (1976-01-01), Jackson et al.
patent: 3953924 (1976-05-01), Zachary et al.

Affiliated with

Also associated with

Rating

Method of fabricating a beam lead flexible circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of fabricating a beam lead flexible circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of fabricating a beam lead flexible circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-733011