Electromagnetic shielding article
Assignee3M Innovative Properties Company
InventorsJeffrey A. Lim, Sywong Ngin, Robert L. Lambert, Jr.
Life of this patent
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Abstract
A shielding article includes a polymeric conductive layer and a protective layer disposed adjacent the polymeric conductive layer. The polymeric conductive layer provides electromagnetic shielding characteristics so as to prevent receipt of data from a radio frequency information component by an external device when the component is located between the external device on one side and the polymeric conductive and protective layers on the other side. The shielding article may be shaped to substantially surround the radio frequency information component.
Claims18
A shielding article comprising:
- a polymeric conductive layer comprising a polymeric layer and a conductive layer disposed on the polymeric layer, the conductive layer comprising a layer of copper between a first layer of nickel and a second layer of nickel;
- a protective layer disposed adjacent the polymeric conductive layer;
- and
- an adhesive layer between the conductive layer and the protective layer,
- wherein the polymeric conductive layer provides electromagnetic shielding characteristics so as to prevent receipt of data from a radio frequency information component by an external device when the component is located between the external device on one side and the polymeric conductive and protective layers on the other side.
A shielding article comprising:
- a polymeric conductive layer comprising a polymeric layer and a conductive layer disposed on the polymeric layer, the conductive layer comprising a layer of copper between a first layer of nickel and a second layer of nickel;
- a protective layer disposed adjacent the polymeric conductive layer;
- and
- an adhesive layer between the conductive layer and the protective layer,
- wherein the shielding article is shaped to substantially surround a radio frequency information component, and wherein the polymeric conductive layer provides electromagnetic shielding characteristics so as to prevent receipt of data from the radio frequency information component by an external device when the radio frequency information component and the shielding article are in an assembled configuration.
A method comprising:
- providing a shielding article comprising:
- a polymeric conductive layer comprising a polymeric layer and a conductive layer disposed on the polymeric layer, the conductive layer comprising a layer of copper between a first layer of nickel and a second layer of nickel;
- a protective layer disposed adjacent the polymeric conductive layer;
- and
- an adhesive layer between the conductive layer and the protective layer;
- disposing a radio frequency information component adjacent the polymeric conductive layer of the shielding article;
- shielding electromagnetic communication between the radio frequency information component and an external device;
- and
- preventing unauthorized release of information from the radio frequency information component.
Dependencies are inferred from the claim text.