Multiple power/ground planes for tab

Details Multiple power/ground planes for tab Multiple power/ground planes for tab

1992-10-09

1993-10-05

Pascal, Robert J.

Active solid-state devices (e.g., transistors, solid-state diode

Housing or package

With contact or lead

357695, 357900, 357748, 357752, H01L 2348

Patent

active

052508447

ABSTRACT:
A TAB lead frame having concentric power/ground planes provides for even distribution of power and ground potentials about the periphery of an integrated circuit. An electrically conductive plane is divided into multiple concentric power/ground planes, each of which are electrically isolated from each other and from the leads of the TAB lead frame. A dielectric layer electrically isolates the concentric power/ground planes from the leads. Electrical connection between the power/ground planes and the leads is made as appropriate via holes through the dielectric layer. The concentric planes provide structural strength to the TAB lead frame, while the even power distribution provides consistent shielding for each lead of the lead frame, and provides flexibility as to the placement of connector pads on the integrated circuit.

REFERENCES:
patent: 4417266 (1983-11-01), Grabbe
patent: 4933741 (1992-06-01), Schroeder

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