Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1986-04-01
1987-06-23
Hearn, Brian E.
Metal working
Method of mechanical manufacture
Assembling or joining
29841, 29856, 29589, 29835, 425DIG13, 235492, 235488, 283 86, 283 72, H01L 2156
Patent
active
046741755
ABSTRACT:
The invention relates to microcircuit cards, used for electronic transactions or other purposes, and concerns a process for mass producing electronic modules to be used in these cards and the modules obtained according to this process. According to the invention, there are fabricated, on the one hand, a metal grid with a plurality of openings into which there penetrate tongues attached to the frame of this grid and intended to form the modules' contact areas, and, on the other hand, pellets of plastics material which have a generally flat front face, a rear face in which there is a hollow and, between this hollow and the front face, windows so arranged that they can be positioned opposite the grid tongues. Then a pellet is attached by its front face to the tongues in each opening, an integrated circuit chip is bonded to the bottom of the hollow in each pellet in such a way that its rear face is directed towards the grid, the connecting terminals of the chip are connected by means of conductors to the tongues to which the pellet is attached, said conductors being seated in the hollow in the pellet and passing through the said windows, and the hollow and the windows are filled with an insulating, hardenable and adhesive material. There then remains only to detach the modules from the grid by cutting the tongues around each pellet.
REFERENCES:
patent: 4460825 (1984-07-01), Haghiri-Tehrani et al.
patent: 4501960 (1985-02-01), Jouvet et al.
patent: 4625102 (1986-11-01), Rebjock et al.
ETA SA Fabrique d'Ebauches
Hearn Brian E.
McMahon Kevin
Pawlikowski Beverly A.
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