Patent ID: 8435424
Filing Date: 2013-05-07
Classification: H01B,H01L,H05K,Y02E

Abstract:
1. A solvent-free conductive paste composition comprising: (a) a binder, (b) an initiator, (c) a glass powder and (d) a conductive powder, wherein the conductive paste composition comprises, based on the total weight of the conductive paste composition, 13-20% of the binder, 73-80% of the conductive powder, 3-5% of the glass powder, and 0.05-10% of the initiator; and exhibits a thixotropic index of 3.5-5.5, and wherein the conductive paste composition does not comprise a solvent, wherein the binder comprises: (i) a monomer comprising an acrylic monomer, an acrylate monomer or a mixture thereof; and (ii) an acrylate oligomer; and wherein the acrylate oligomer has a molecular weight in a range from about 1,000 to about 100,000 and is selected from the group consisting of a urethane acrylate, an epoxy acrylate, a polyester acrylate, a polyester polyol based acrylate, an acrylate homopolymer and a mixture thereof.