Metal fusion bonding – Process – Preplacing solid filler
Patent
1997-06-30
1999-10-05
Ryan, Patrick
Metal fusion bonding
Process
Preplacing solid filler
228226, 22818022, 249119, B23K 35012, B23K 31002, B22C 9020
Patent
active
059610328
ABSTRACT:
A method is described for forming solder mounds for attachment to electronic devices. The solder mounds are preferably in the form of columns and comprise a first solder portion and a second solder portion with the two solder portions having different melting points. The solder columns are preferably formed using an injection molding device. The method is directed to the use of a single column mold to form the multi-solder column. In one embodiment, deformable material is used to partially block a portion of the through opening of the mold during a first solder injection process. The deformable material is then removed and the remainder of the through openings of the mold filled with a second molten solder. The multi-solder column is then electrically connected to a substrate by reflowing.
REFERENCES:
patent: 3934810 (1976-01-01), Henning
patent: 4263341 (1981-04-01), Martyniak
patent: 5086967 (1992-02-01), Delalle et al.
patent: 5244143 (1993-09-01), Ference et al.
patent: 5350105 (1994-09-01), Delalle et al.
patent: 5439162 (1995-08-01), George et al.
patent: 5673846 (1997-10-01), Gruber
patent: 5718361 (1998-02-01), Braun et al.
patent: 5718367 (1998-02-01), Covell, II et al.
patent: 5762259 (1998-06-01), Hubacher et al.
patent: 5775569 (1998-07-01), Berger et al.
patent: 5806753 (1998-09-01), Bielick et al.
patent: 5820894 (1998-10-01), Kreutzer
Covell II James H.
Farooq Shaji
Gruber Peter A.
Ray Sudipta K.
Ahsan Aziz M.
Gamino Carlos J.
International Business Machines - Corporation
Ryan Patrick
Tomaszewski John J.
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