High terminal count integrated circuit device package
First Claim
1. A surface mounted high terminal count integrated circuit device package for solder attachment to a substrate comprising:
- (a) a support member having a centrally disposed chip connect area, top and bottom surfaces and periphery forming sides and walls forming notches in the sides of said support member and a plurality of holes in said support member in preselected patterns adjacent to the notched periphery thereof;
(b) electrical metallizations on the walls of said notches and plurality of holes of the support member, said metallization of the notches forming metallized notches and said metallization of the holes forming cylindrically shaped electrical leads therethrough, said metallized notches and holes for forming solderable connections between the package and substrate;
(c) a plurality of wire bonding terminals selectively positioned on the support member adjacent said chip connect area;
(d) a plurality of trace conductors having first and second ends, said first ends electrically connected to said plurality of wire bonding terminals; and
(e) a plurality of expanded terminal pads mounted on the top and bottom surfaces of the support member, said expanded pads of the top surface electrically connected to the second ends of the trace conductors and together with the expanded pads of the bottom surface electrically connected to the notch and hole metallizations of the support member in open communication with the metallized notches and holes thereof whereby when the bottom pads are soldered to the substrate, solder rises up the open metallized notches and holes to form solder fillets therein for electrical connection of the substrate and for visual inspection thereof.
1 Assignment
0 Petitions
Accused Products
Abstract
An integrated circuit (IC) device package is disclosed suitable for accommodating large terminal count IC devices in a very small space. A first set of terminals is located in notches around the periphery of the package. A second set of terminals is located inboard of the package and are comprised of metallized annular rings on the top and bottom surfaces of the package around holes or apertures through the surfaces of the package with metallization coating the holes to connect the top and bottom annular rings. This second set of terminals may be arranged in rows parallel to the edges of the package and may be connected to the IC device through buried conductor traces and wire bonding techniques. If necessary, additional rows of metallized holes can be utilized in a grid configuration, preferably at 0.050" centers.
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Citations
12 Claims
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1. A surface mounted high terminal count integrated circuit device package for solder attachment to a substrate comprising:
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(a) a support member having a centrally disposed chip connect area, top and bottom surfaces and periphery forming sides and walls forming notches in the sides of said support member and a plurality of holes in said support member in preselected patterns adjacent to the notched periphery thereof; (b) electrical metallizations on the walls of said notches and plurality of holes of the support member, said metallization of the notches forming metallized notches and said metallization of the holes forming cylindrically shaped electrical leads therethrough, said metallized notches and holes for forming solderable connections between the package and substrate; (c) a plurality of wire bonding terminals selectively positioned on the support member adjacent said chip connect area; (d) a plurality of trace conductors having first and second ends, said first ends electrically connected to said plurality of wire bonding terminals; and (e) a plurality of expanded terminal pads mounted on the top and bottom surfaces of the support member, said expanded pads of the top surface electrically connected to the second ends of the trace conductors and together with the expanded pads of the bottom surface electrically connected to the notch and hole metallizations of the support member in open communication with the metallized notches and holes thereof whereby when the bottom pads are soldered to the substrate, solder rises up the open metallized notches and holes to form solder fillets therein for electrical connection of the substrate and for visual inspection thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification