| abstract |
The present invention relates to a polyimide precursor having a unit structure represented by the general formula (1) and a polyimide precursor having a unit structure represented by the general formula (2), which does not cause whitening, cracking and foaming of the film, A flexible color filter, a flexible substrate with a gas barrier layer, and a flexible display device using the same. [In the general formulas (1) and (2), X 1 to X 4 each independently represent a hydrogen atom, a monovalent organic group having 1 to 10 carbon atoms or a monovalent alkylsilyl group having 1 to 10 carbon atoms. R 1 is represented by the general formula (3), and R 2 is represented by the general formula (4) [In the general formula (4), R 3 and R 4 each independently represent a monovalent organic group having 1 to 10 carbon atoms] |