Lead frame and method for manufacturing same

Details Lead frame and method for manufacturing same Lead frame and method for manufacturing same

1993-12-23

1997-07-01

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electroforming or composition therefor

Electrical product

205 67, 205122, C25D 100

Patent

active

056434332

ABSTRACT:
A method for manufacturing a lead frame employing a resist pattern formed on a matrix and having a cavity therein, in which an electro-deposition pattern is formed. A connecting cavity portion interconnects tip ends of inner lead cavity portions such that a connecting portion interconnects the tip ends of inner leads of the electro-deposition pattern formed in the cavity. The connecting piece is maintained while the electro-deposition pattern is separated from the matrix and the resist.

REFERENCES:
patent: 3971428 (1976-07-01), Hall
patent: 4125441 (1978-11-01), Dugan
patent: 4480150 (1984-10-01), Jones
patent: 4584039 (1986-04-01), Shea
patent: 5083186 (1992-01-01), Okada
patent: 5221428 (1993-06-01), Ohsawa
Derwent abstract of JP 62-2643 (Jan. 1987).
Abstract of JP 3-14263 (Jan. 1991).
Abstract of JP 57-171681 (Oct., 1982).
Abstract of JP 4-333244 (Nov., 1992).

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