Electrically conductive pressure-sensitive adhesive tape
AssigneeMinnesota Mining and Manufacturing Company
InventorsCylde D. Calhoun, Maurice J. Fleming, George D. Foss, Richard L. Renstrom
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Abstract
Electrically conductive elements on two substrates can be electrically interconnected by an adhesive tape containing electrically conductive equiax particles that are individually positioned in the adhesive layer in a predetermined pattern. Each particle is harder than the elements it is to interconnect, so that hand pressure causes the particles to penetrate into the elements, thus creating a reliable electrical connection. Particularly useful particles are glass beads having a metallic coating that is from 0.1 to 2 .mu.m thick.
Claims9
An electronic device comprising:
- a first electrically conductive element;
- a second electrically conductive element;
- a conductive adhesive layer interconnecting the first and second electrically conductive elements, which adhesive layer comprises an insulative adhesive having a predetermined pattern of individually positioned, laterally spaced, equiax particles therein, said particles having a hardness relative to the hardness of the electrically conductive elements such that the particles have penetrated the electrically conductive elements, formed craters therein, and removed oxides therefrom, and wherein said particles are positioned substantially only at the specific locations of the electrically conductive elements.
Dependencies are inferred from the claim text.