Power chip package
First Claim
1. A power chip package comprising:
- a power chip having a first terminal on one side thereof and a second terminal on the opposite side thereof;
a first dielectric substrate;
a first sheet metal lead attached to one side of said first dielectric substrate and patterned in mirror image fashion to, and attached to, said first terminal;
a second dielectric substrate;
a second sheet metal lead attached to one side of said second dielectric substrate and patterned in mirror image fashion to, and attached to, said second terminal; and
a heat transfer means in heat flow communication with said first and second dielectric substrates for transferring heat between said first and second dielectric substrates, said heat transfer means comprising a plurality of compacted folds of sheet metal interposed between said first and second dielectric substrates.
3 Assignments
0 Petitions
Accused Products
Abstract
A heat-generating power semiconductor chip is mounted in a package to permit testing or use of the chip before or after mounting of the package to a heat spreader plate. A plurality of sheet metal leads are attached to a dielectric substrate, such as beryllia. The leads are patterned in mirror image fashion to a plurality of terminals on one side of the power chip. In one form, a further sheet metal lead is attached to a further dielectric substrate and is adapted to abut a terminal on the other side of the power chip. In another form, heat transfer structure is provided for transferring heat between the pair of dielectric substrates, thereby enabling heat to be removed from both sides of the power chip.
-
Citations
15 Claims
-
1. A power chip package comprising:
-
a power chip having a first terminal on one side thereof and a second terminal on the opposite side thereof; a first dielectric substrate; a first sheet metal lead attached to one side of said first dielectric substrate and patterned in mirror image fashion to, and attached to, said first terminal; a second dielectric substrate; a second sheet metal lead attached to one side of said second dielectric substrate and patterned in mirror image fashion to, and attached to, said second terminal; and a heat transfer means in heat flow communication with said first and second dielectric substrates for transferring heat between said first and second dielectric substrates, said heat transfer means comprising a plurality of compacted folds of sheet metal interposed between said first and second dielectric substrates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
-
-
12. A package for a power chip comprising:
-
a first dielectric substrate; a plurality of sheet metal leads attached to one side of said first dielectric substrate and patterned in mirror image fashion to the terminal pattern on one side of a power chip; a second dielectric substrate; a further sheet metal lead attached to one side of said second dielectric substrate and patterned in mirror image fashion to a terminal on another side of the power chip; and heat transfer means for transferring heat between said first and second dielectric substrates, said heat transfer means comprising a plurality of compacted folds of sheet metal interposed between said first and second dielectric substrates. - View Dependent Claims (15)
-
Specification