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US 2014/0177197 A1Published application
Multi-Layered Magnetic Shields
AssigneeNokia Corporation
InventorHarri Armas Lampinen
Life of this patent
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Abstract
A device may include a multiple layer ferrite shield to protect device components during charging of a battery of the device based on magnetic induction. In some examples, the device may include a ferrite shield comprising a first layer and a second layer. The first layer may be composed of a material having first magnetic properties and the second layer may be composed of a material having second magnetic properties. Further, the first magnetic properties may be different from the second magnetic properties.
Claims20
An apparatus comprising:
- a magnetic shield comprising a first layer and a second layer, wherein the first layer comprises a material having a first magnetic permeability and the second layer comprising a material having a second magnetic permeability, wherein the first magnetic permeability is different from the second magnetic permeability and the magnetic shield is configured to reduce exposure of at least one internal component of an electronic device to a magnetic field.
A method comprising:
- creating a first layer having a first magnetic permeability and a first thickness;
- creating a second layer having a second magnetic permeability and a second thickness;
- and
- creating a magnetic shield by adhering the first layer to the second layer.
1 more element
A device comprising:
- at least one internal component;
- and
- a magnetic shield comprising a first layer and a second layer, wherein the first layer is composed of a material having a first magnetic permeability and the second layer is composed of a material having a second magnetic permeability, wherein the first magnetic permeability is different from the second magnetic permeability and the magnetic shield is configured to protect the at least one internal component from a magnetic field during charging.
Dependencies are inferred from the claim text.