SOLVENT-BASED INK COMPRISING SILVER NANOPARTICLES COMPRISING SILVER NANOPARTICLES AND HAVING IMPROVED SUBSTRATE ADHESION, A REDUCED COFFEE-RING EFFECT, AND EXTENDED DE-CAP TIME OF A PRINTHEAD, OR OPTIMIZED LAG

摘要

PURPOSE: A conductive ink composition is provided to have improved dispersity of metal nanoparticles, a reduced coffee-ring effect, reduced surface roughness, and an extended drying time.;CONSTITUTION: An ink composition comprises a metal nanoparticle comprising silver, a random resin, and two or more ink vehicles. At least one of the ink vehicles has a vapor pressure less than 4 mmHg at 25 °C. The metal nanoparticle is a stabilized metallic nanoparticle comprising a metal nanoparticle core and an organic stabilizing shell layer. The metallic nanoparticle has a metal content of at least 65 wt%. For the ink composition, the de-cap time of a printhead in a printhead nozzle is extended by at least 5 hours.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Line height; (BB) Line width; (CC) No coffee-ring effect