| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition that provides a cured film suitable for a display substrate material having high strength, high heat resistance, moderate linear expansion coefficients and high transparency.SOLUTION: A heat-resistant substrate composition comprises at least one of a polyimide precursor comprising structural units represented by formula (1), formula (2) and formula (3) or an imidized polymer thereof, and organic solvent (in the formulas (1)-(3), Xrepresents a tetravalent group represented by formula (4), Y, Yand Yeach represent divalent groups represented by formulas (5), (6) and (7), and R-Rrepresent hydrogen atoms or the like). |
