Method of making RIS or ROS array bars using replaceable subunit

Details Method of making RIS or ROS array bars using replaceable subunit Method of making RIS or ROS array bars using replaceable subunit

1990-06-18

1992-01-07

Chaudhuri, Olik

Fishing, trapping, and vermin destroying

437205, 437 53, 437 51, 357 30, 346140R, 346 11, H01L 2184, H01L 2158

Patent

active

050791893

ABSTRACT:
Overlapping chip replaceable subunits for RIS or ROS array bars are disclosed. The subunits include a planar semiconductive substrate having at least one component and supporting circuitry on a surface thereof. The semiconductive substrate has first and second side edges, a front edge and a width equal to a distance between the first and second side edges. The planar semiconductive substrate is mounted on a planar support which can be, for example, a daughterboard/heat sink assembly having at least one electrode having a terminal at one end thereof. The planar support also has first and second side edges, a front edge and a width equal to a distance between the first and second side edges. The width of the support is less than the width of the semiconductive substrate so that the first and second side edges of the planar semiconductive substrate extend outwardly beyond the first and second side edges, respectively, of the support. The structure of the present invention enables extended arrays of subunits to be accurately placed on one surface of a substrate, while permitting individual subunits to be removed from the substrate easily and without damaging adjacent subunits or their electrical connections to the host machine.

REFERENCES:
patent: 4601777 (1986-07-01), Hawkins et al.
patent: 4612554 (1986-09-01), Poleshuk
patent: 4690391 (1987-09-01), Stoffel et al.
patent: 4712018 (1987-12-01), Stoffel et al.
patent: 4774530 (1988-09-01), Hawkins
patent: 4830985 (1989-05-01), Araghi et al.
patent: 4851371 (1989-07-01), Fisher et al.

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