| abstract |
[PROBLEMS] To provide a cured film which exhibits high solvent resistance, liquid crystal orientation, heat resistance, high transparency and high planarization property after the cured film is formed, but also can be applied to a production line of a planarizing film of a color filter, Provide materials that can be dissolved in the solvent. [MEANS FOR SOLVING PROBLEMS] A polyester composition for forming a thermosetting film, which comprises a component (A), a component (B) and a component (C): Component (A): a polyester obtained by reacting a tetracarboxylic dianhydride with a diol compound, Component (B): an epoxy compound having two or more epoxy groups, component (C): an amino group-containing carboxylic acid compound obtained by reacting a diamine compound, dicarboxylic anhydride and tetracarboxylic dianhydride. |