Patent ID: 6214259
Filing Date: 2001-04-10
Classification: H01L,H05K

Abstract:
A dispersion containing Cu untrafine particles individually dispersed therein, comprising an organic solvent which is hardly evaporated at room temperature, but can be evaporated during a drying-firing step upon forming a Cu-interconnection on a semiconductor substrate and metal Cu-containing ultrafine particles having a particle size of not greater than 0.01 .mu.m, the surface of the individual Cu ultrafine particles being surrounded by or covered with the organic solvent, these particles being independently dispersed in the solvent, and the dispersion obtained by mixing the organic solvent with the ultrafine particles having a viscosity of not higher than 50 cP at 20.degree. C., and said organic solvent being one member selected from the group consisting of mineral spirits, tridecane, dodecylbenzene and a mixture thereof and these solvents to which one member selected from the group consisting of .alpha.-terpineol, a hydrocarbon, an alcohol, an ether, an ester, a ketone, an organic nitrogen atom-containing compound, or an organic silicon atom-containing compound, which have not less than 5 carbon atoms, or a mixture thereof is added.