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US 9,431,313 B1Granted
Integrated circuit carrier coating
AssigneeFreescale Semiconductor, Inc.
InventorsVarughese Mathew, Thomas H. Koschmieder
Life of this patent
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Abstract
A device includes an integrated circuit (IC) carrier for a semiconductor device, and a coating on the IC carrier. In the presence of an electrical field or a magnetic field, the coating includes a first functional group that attracts anions and a second functional group that attracts cations.
Claims20
A device comprising:
- an integrated circuit (IC) carrier for a semiconductor device;
- and
- a coating on the IC carrier, wherein, in the presence of an electrical field or a magnetic field, the coating includes a functionalized self-assembled monolayer (SAM) material that comprises:
- an anchoring element that has an affinity for attachment to a metal surface,
- a first functional group that carries a positive charge to attract and immobilize anions, and
- a second functional group that carries a negative charge to attract and immobilize cations, and
- the anions and the cations are ionic contaminants.
4 more elements
A packaged semiconductor device comprising:
- an integrated circuit (IC) carrier;
- an integrated circuit (IC) mounted on the IC carrier;
- a mold compound encapsulating at least a portion of the IC carrier and the IC;
- a protective coating on the IC carrier, wherein the protective coating is applied in regions that are subject to electrical or magnetic fields generated by the IC, and the protective coating includes a functionalized self-assembled monolayer (SAM) material that comprises an anchoring element that has an affinity for attachment to a metal surface and at least two functional groups, wherein a first functional group of the at least two functional groups carries a positive charge to attract and immobilize anions from the mold compound, and a second functional group of the at least two functional groups carries a negative charge to attract and immobilize cations from the mold compound, and wherein the anions and the cations are ionic contaminants from the mold compound.
1 more element
Dependencies are inferred from the claim text.