Heatplates for heatsink attachment for semiconductor chips

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Insulating material

Reexamination Certificate

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Details

C257S675000, C257S704000, C257S718000, C257S719000, C257S722000, C257S726000, C257S727000, C257SE23051, C257SE23086, C257SE23101, C257SE23102, C361S689000, C361S709000, C361S712000, C174S545000, C174S548000, C174S561000, C174S562000, 43

Reexamination Certificate

active

07834444

ABSTRACT:
An apparatus for heatsink attachment and a method for forming the apparatus. The apparatus includes a substrate, a semiconductor chip on top of and physically attached to the substrate, and a lid on top of the substrate. The lid includes a first thermally conductive material. The apparatus further includes a heatsink on top of the lid. The heatsink includes a second thermally conductive material. The semiconductor chip and the substrate share a common interface surface that defines a reference direction perpendicular to the common interface surface and pointing from the substrate towards the semiconductor chip. The lid is disposed between the substrate and the heatsink. The lid includes a first protruding member. The first protruding member of the lid is farther away from the substrate than a portion of the heatsink in the reference direction.

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