Abstract:
The invention is concerned with the problem of providing connections to leadless integrated circuit packages. A connector assembly (10) for connection to a computer backpanel (14) or the like includes a leadless integrated circuit package (16) and a connector receptacle (20) for receiving the leadless package (16). The leadless package (16) has two insulating layers (60, 62) and outwardly extending conductors (68, 72) formed on each of the two layers (60, 62). The insulating layers (60, 62) have contact coupling edges (70, 74), with the contact coupling edge (70) of one layer (60) extending outwardly of the contact coupling edge (74) of the other layer (62). Rows of contacts (40, 42) in the receptacle (20) make electrical contact with the conductors (68, 72) on the leadless package at the contact coupling edges (70, 74). The construction enables an increased number of external connections to be made to the chip (12) without a substantial increase in the surface area of the package (16). In a second embodiment, the connector assembly (10a) includes a leadless integrated circuit package (20a) having three insulating layers (60a, 62a, 92a) and outwardly extending conductors (68a, 72a, 90a) formed on each of the three layers (60a, 62a, 92a).
Abstract:
The invention is concerned with the problem of the package density which can be achieved using integrated circuit packages. An integrated circuit package (10) includes a plurality of contact pins (14) having a plurality of conductors (32, 34) thereon. In one embodiment, each pin (14) includes an insulating substrate (30) and a conductor (32, 34) on each of two opposing sides of the substrate (30). An external connector (42) for each pin (14) has two contacts (46, 48), one contact for engaging each of the two conductors (32, 34) on the pin (14). In other embodiments, each pin (114, 214) includes four conductors. An external connector (142, 242) for each pin (114, 214) has four contacts, one contact for engaging each of the four conductors on the pin (114, 214).