摘要:
Metal pastes used in the fabrication of multilayer ceramic (MLC) substrates used in semiconductor devices. The pastes reduce substrate defects, such as via bulge and camber. The pastes are comprised of a metal having high conductivity, frit which includes glass, an organic binder, and a solvent, optionally with a surfactant.
摘要:
Deformation of vias and shorting between vias during screening of conductive paste onto greensheets wider than 185 mm is avoided by a concentration of thixotropic agent in the conductive paste formulation to a concentration which raises the thixotropic index of the paste to within 5% to 25% of the maximum achievable thixotropic index for the organic vehicle in the paste. For a paste containing molybdenum powder in which the organic vehicle is a mixture of ethyl cellulose, texanol and oleoyl sarcosine, this criterion corresponds to a concentration of glycerl tri(-12-hydroxystearate) in the range of 1.4% to 1.8% by weight.
摘要:
Deformation of vias and shorting between vias during screening of conductive paste onto greensheets wider than 185 mm is avoided by a concentration of thixotropic agent in the conductive paste formulation to a concentration which raises the thixotropic index of the paste to within 5% to 25% of the maximum achievable thixotropic index for the organic vehicle in the paste. For a paste containing molybdenum powder in which the organic vehicle is a mixture of ethyl cellulose, texanol and oleoyl sarcosine, this criterion corresponds to a concentration of glycerl tri(-12-hydroxystearate) in the range of 1.4% to 1.8% by weight.