Lead frame having layered conductive planes

Details Lead frame having layered conductive planes Lead frame having layered conductive planes

1994-08-23

1996-03-12

Crane, Sara W.

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

Lead frame

257672, 257674, H01L 23495

Patent

active

054989019

ABSTRACT:
A lead frame having layered conductive planes is disclosed for use in semiconductor devices. The lead frame includes a plurality of long leads each having a lead tip and a plurality of short leads. Electrically conductive layers are attached to the long leads around such that they don't cover the tips of the long leads and are radially inward of the short leads. The conductive layers are insulated from the long lead and each other by adhesive insulating layers. In a preferred embodiment, the top conductive layer has a smaller width than the bottom conducting layer and is positioned to expose an inner and outer ledge on the bottom conducting layer. The exposed outer ledge allows bonding to the shorter leads. The use of shorter leads decreases the amount of inductance in the leads. The conductive layers also may act as capacitors. In one embodiment of the present application the short leads may correspond to ground and/or power leads. The decreased inductance and increased capacitance decreases the impedance seen in the power and ground leads. This allows the semiconductor to operate at higher speeds and consume less power.

REFERENCES:
patent: 4451845 (1984-05-01), Philofsky et al.
patent: 4891687 (1990-01-01), Mallik et al.
patent: 5025114 (1991-06-01), Braden
patent: 5089878 (1992-02-01), Lee
patent: 5168368 (1992-12-01), Gow, III et al.
patent: 5194695 (1993-03-01), Maslakow

Affiliated with

Also associated with

Rating

Lead frame having layered conductive planes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lead frame having layered conductive planes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lead frame having layered conductive planes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2102606