Low profile heat spreader and methods
First Claim
Patent Images
1. A semiconductor chip assembly, comprising:
- a semiconductor die attached to a substrate;
a composite layered heat spreader located over the semiconductor chip, the heat spreader including graphite layers sandwiched with polymer layers and;
a planar rectangular portion substantially covering the semiconductor die;
four corner legs extending from the planar portion and contacting the substrate, each corner leg of the four corner legs extending diagonally away from respective sides forming each corner of the planar portion, each corner leg including a first portion generally perpendicular to the planar portion, connected to the planar portion, and a second portion generally parallel to the planar portion connected to the first portion so as to include a stepped profile;
an adhesive thermal interface layer forming heat conducting interfaces with both the semiconductor die and the heat spreader.
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Accused Products
Abstract
Embodiments of semiconductor chip assemblies, and methods are shown that include adhesive thermal interface materials between a heat spreader and a semiconductor die. Assemblies and methods are shown where the heat spreader is not adhered to a substrate beneath the semiconductor die.
14 Citations
9 Claims
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1. A semiconductor chip assembly, comprising:
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a semiconductor die attached to a substrate; a composite layered heat spreader located over the semiconductor chip, the heat spreader including graphite layers sandwiched with polymer layers and; a planar rectangular portion substantially covering the semiconductor die; four corner legs extending from the planar portion and contacting the substrate, each corner leg of the four corner legs extending diagonally away from respective sides forming each corner of the planar portion, each corner leg including a first portion generally perpendicular to the planar portion, connected to the planar portion, and a second portion generally parallel to the planar portion connected to the first portion so as to include a stepped profile; an adhesive thermal interface layer forming heat conducting interfaces with both the semiconductor die and the heat spreader. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tablet computer, comprising:
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a metallic chassis; a display screen coupled to the metallic chassis, with a space between the metallic chassis and the display screen containing a semiconductor chip assembly, including; a semiconductor die attached to a substrate; a heat spreader located over the semiconductor chip, the heat spreader including; a planar rectangular portion substantially covering the semiconductor die; four corner legs extending from the planar portion and contacting the substrate, each corner leg of the four corner legs extending diagonally away from respective sides forming each corner of the planar portion, each corner leg including a first portion generally perpendicular to the planar portion, connected to the planar portion, and a second portion generally parallel to the planar portion connected to the first portion so as to include a stepped profile; an adhesive thermal interface layer forming heat conducting interfaces with both the semiconductor die and the heat spreader; and a second thermal interface material forming heat conducting interfaces with both the heat spreader and the metallic chassis. - View Dependent Claims (9)
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Specification