Patent ID: 8552089

Claim:
An ink composition for forming a light shielding film in an organic semiconductor device, the ink composition comprises: a black pigment; a resin component; a surface energy modifier; a quick-drying organic solvent having a vapor pressure at 20° C. of 11.3×10 2 Pa (8.0 mmHg) or more and a boiling point under one atmospheric pressure of less than 115° C.; a slow-drying organic solvent having a vapor pressure at 20° C. of less than 11.3×10 2 Pa (8.0 mmHg) and a boiling point under one atmospheric pressure of 115° C. or more; and a mold releasing agent, wherein the resin component contains a solid resin that is in a solid state at 200° C. or less and a liquid resin that is in a liquid state at 10 to 50° C. at a ratio (solid resin/liquid resin) of 0.2 to 0.6 by mass.