Base cards and IC cards using the same

Details Base cards and IC cards using the same Base cards and IC cards using the same

1998-05-19

2000-02-22

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361737, 361761, 257679, 257787, 438124, 438126, H01L 2313

Patent

active

060287748

ABSTRACT:
A base card improves the mounting reliability of a COB package particularly when the package has molding by-products such as epoxy burrs or molding flashes. The base card has a COB package receiving part made up of first and second sections. The receiving part is stepped so that the sections thereof have shapes that are complementary to that of and for receiving a peripheral portion of the printed circuit board of the COB package and the package body the COB package, respectively. The second section has a bevel at the transition of the first section into the second section. This bevel helps define a space in which the by-products are accommodated when the COB package is mounted to the base card. Further, the second section of the COB package receiving part may define an opening in the bottom surface of the base card. This opening also prevents damage to the base card by preventing the need for the bottom of the package body to bear against the bottom of the base card when the COB package is mounted to the base card.

REFERENCES:
patent: 4040874 (1977-08-01), Yerman
patent: 4198444 (1980-04-01), Yerman
patent: 4222516 (1980-09-01), Badet et al.
patent: 4625102 (1986-11-01), Rebjock et al.
patent: 4737620 (1988-04-01), Mollet et al.
patent: 5283423 (1994-02-01), Venambre et al.

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