Patent ID: 7264482

Claim:
An anisotropic conductive sheet having a conductive property in a thickness direction thereof under a predetermined condition, comprising: an insulative matrix member made of a first elastomer having a dielectric constant value of at the most 2.28 and/or a dielectric loss value of at the most 0.025; and a plurality of conductive members made of a second elastomer having a conductive property in said thickness direction under the predetermined condition, wherein said plurality of conductive members capable of conducting a flow of electricity between top and bottom surfaces thereof are located among said insulative matrix member in a scattered manner, said conductive and insulative matrix members are bonded chemically, and wherein said first elastomer and second elastomer are flush with each other at an interface therebetween, and the more apart from the interface, the smaller a thickness of said first elastomer becomes compared to said second elastomer.