Multilayer structures for magnetic shielding
AssigneeHoneywell International Inc.
InventorRomney R. Katti
Life of this patent
Estimating the term…
Abstract
A magnetic shield is presented. The shield may be used to protect a microelectronic device from stray magnetic fields. The shield includes at least two layers. A first layer includes a magnetic material that may be used to block DC magnetic fields. A second layer includes a conductive material that may be used to block AC magnetic fields. Depending on the type of material that the first and second layers include, a third layer may be inserted in between the first and second layers. The third layer may include a non-conductive material that may be used to ensure that separate eddy current regions form in the first and second layers.
Claims15
A magnetic shield for shielding a microelectronic device from magnetic field effects, the magnetic shield comprising:
- a first magnetic shield;
- and
- a second magnetic shield, wherein the first and second magnetic shields each comprise:
- a first layer comprising a magnetic conductive material;
- a second layer comprising a non-magnetic conductive material;
- and
- a third layer comprising a non-conductive material, wherein the third layer is interposed between the first layer and the second layer, and
- wherein the first and second magnetic shields are separated by the microelectronic device.
A magnetic shield for shielding a microelectronic device from magnetic field effects, the magnetic shield comprising:
- a first layer comprising a magnetic conductive material;
- a second layer comprising a non-magnetic conductive material;
- and
- a third layer comprising a non-conductive material, wherein the third layer is interposed between the first layer and the second layer, and wherein the first, second, and third layers form a magnetic shield layer adjacent to the microelectronic device, and
- wherein the second layer comprises a strata of conductive layers, wherein the conductive layers are separated from each other by an non-conductive layer interposed between each layer of the strata of conductive layers.
Dependencies are inferred from the claim text.