| abstract |
PROBLEM TO BE SOLVED: To provide a polyimide precursor and a polyimide precursor solution for providing a polyimide film having excellent heat resistance and significantly improved physical properties such as transparency, yellowness and Young's modulus. A polyimide precursor containing a structural unit derived from an acid dianhydride and a structural unit derived from a diamine compound represented by the following chemical formula. In the formula, A is O or S, and R 1 and R 2 are independent of each other, halogen, (C1-C10) alkyl, halo (C1-C10) alkyl, (C1-C10) alkoxy, or (C1-C10) alkoxy. C6-C12) Aryl, where m and n are integers from 0 to 3 independently of each other. [Selection diagram] None |