Composite electrical interconnection medium comprising a conductive network, and article, assembly, and method
First Claim
1. An electrical interconnection medium comprising a body of composite material in the form of a layer or sheet extending in x- and y-directions,said composite material comprising first particles in an essentially nonconductive matrix material,said first particles at least in part being magnetic and having at least a surface portion which is electrically conducting, andsaid first particles being magnetically aligned into a conductive network, whereby said medium has significant conductivity in said x- and y-directions.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrical interconnection medium is made as a composite of electrically conducting, magnetic particles in a nonconductive matrix material. Particles are magnetically aligned into a network which extends in at least two dimensions as, e.g., in a sheet or layer medium. A layer medium may further include additional, larger conductive particles which may be magnetically aligned into columns extending the thickness of the medium; typically, in this case, the medium serves as an anisotropically conductive medium in the direction of the columns, with slight in-plane conductivity imparted by the network aiding the dissipation of electrostatic charge.
61 Citations
15 Claims
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1. An electrical interconnection medium comprising a body of composite material in the form of a layer or sheet extending in x- and y-directions,
said composite material comprising first particles in an essentially nonconductive matrix material, said first particles at least in part being magnetic and having at least a surface portion which is electrically conducting, and said first particles being magnetically aligned into a conductive network, whereby said medium has significant conductivity in said x- and y-directions.
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5. The electrical interconnection medium of claim 5, said medium having z-direction conductivity less than 1 ohm-centimeter.
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12. An article of manufacture comprising an electrical interconnection medium, said medium consisting essentially of a composite material in the form of a layer or sheet extending in x- and y-directions,
said composite material comprising first particles in an essentially nonconductive matrix material, said first particles at least in part being magnetic and having at least a surface portion which is electrically conducting, and said first particles being magnetically aligned into a conductive network, whereby said medium has significant conductivity in said x- and y-directions.
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13. A method for making a conductive medium, said method comprising a step of
forming a layer which extends in x- and y-directions and in which first particles are dispersed in an essentially nonconductive matrix material, said first particles at least in part being magnetic and having at least a surface portion which is electrically conducting, and a step of magnetically aligning said first particles into a conductive network, whereby said medium has significant conductivity in said x- and y-directions.
Specification