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US 2004/0062020 A1Published application
EMI shield for an integrated circuit
OwnerWinnie C. Leung, Russell K. Brovald +3inventors
InventorsWinnie C. Leung, Russell K. Brovald, David M. Hockanson, Anthony R. Fredriksson, Mason Mok
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a circuit board is disclosed. The circuit board includes a grounding ring, an integrated circuit, a heat spreader mounted on the integrated circuit and an electromagnetic shield. The electromagnetic shield is mounted on the grounding ring around the integrated circuit to electrically ground the heat spreader to the circuit board in order to trap electromagnetic interference generated by the integrated circuit.
Claims27
A circuit board comprising:
- a grounding ring;
- an integrated circuit;
- a heat dissipation device mounted on the integrated circuit;
- and
- an electromagnetic shield mounted on the grounding ring around the integrated circuit.
2 more elements
A circuit board comprising:
- a plurality of ground pins that are electrically grounded by a ground layer of the circuit board;
- a ground plane that couples to the ground layer via the ground pins;
- a grounding ring coupled to the ground plane;
- an integrated circuit mounted on the ground pins;
- a heat spreader mounted on the integrated circuit;
- and
- an electromagnetic shield, mounted on the grounding ring around the integrated circuit, to trap electromagnetic interference generated by the integrated circuit.
4 more elements
A circuit board comprising:
- a connector mounted on the circuit board;
- an integrated circuit mounted on the connector;
- a heat spreader mounted on the integrated circuit;
- an electromagnetic shield, mounted on the circuit board around the integrated circuit, the shield including:
- a first set of springs to align the shield with the connector;
- alignment prongs couple with the alignment slots to mount the shield into the grounding ring;
- and
- a second set of springs;
- and
- a heat sink, mounted on the heat spreader to secure the shield to the circuit board by compressing the second set of springs and causing the compression of the first set of springs.
7 more elements
Dependencies are inferred from the claim text.