Prefabricated wire leadframe for optoelectronic devices

Details Prefabricated wire leadframe for optoelectronic devices Prefabricated wire leadframe for optoelectronic devices

1989-12-04

1991-05-28

Yusko, Donald J.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313331, 313499, 313500, 250552, H01J 162

Patent

active

050197460

ABSTRACT:
A light-emitting diode lamp comprises a cathode wire having a cup lined with a metal foil formed in its head end, an anode wire parallel to the cathode wire and having a flattened head end lined with a metal foil, a light-emitting diode seated in the cup and connected to the anode with a thin connecting wire, the entire assembly being potted in a transparent material. A leadframe for assembly of LED lamps comprises a pair of elongated strips and a plurality of wire pairs attached to the strips, each wire pair having an anode wire having a layer of metal foil welded to its head end and a cathode wire having a metal foil-lined cup in its head end. A method for preparing wires for leadframe assembly is also described.

REFERENCES:
patent: 3863075 (1975-01-01), Ironmonger
patent: 4013915 (1977-03-01), Dufft
patent: 4152624 (1979-05-01), Knaebel
patent: 4255688 (1981-03-01), Nagasawa

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