Patent ID: 7521115

Claim:
An electrically conductive paste, comprising: a resin capable of being cross-linked by free-radical polymerization, wherein the resin includes a mixture of bis-glycidyl methacrylate, ethoxylated bisphenol A, and triethlene glycoldimethacrylate (TGMA), and wherein the resin comprises 35 to 50 percent of the paste; electrically conductive filler particles dispersed in the resin, wherein the electrically conductive filler particles comprise 50 to 65 percent of the paste and are of a substance selected from the group consisting of: tin, indium, bismuth and zinc, the resulting paste being electrically conductive, wherein each electrically conductive filler particle has an irregularly shaped form and a particle size between 10 μm and 100 μm; and wherein the electrically conductive paste is used for forming electrical conductive polymer bumps at low temperature.