POLYIMIDE PRECURSOR, POLYIMIDE, FLEXIBLE SUBSTRATE USING SAME, COLOR FILTER AND MANUFACTURING METHOD THEREFOR, AND FLEXIBLE DISPLAY DEVICE

摘要

The present invention is based on a polyimide precursor having unit structures represented by general formula (1) and unit structures represented by general formula (2), provides a polyimide precursor for which film whitening, cracking and bubbling do not occur regardless of film baking conditions, and provides a flexible TFT array, a flexible color filter, and a flexible substrate with a gas barrier layer using the polyimide precursor, and a flexible display device, etc. using same. (In general formulas (1) and (2), X1 - X4 each independently represents a hydrogen atom, C1 to C10 monovalent organic group or C1 to C10 monovalent alkylsilyl group. R1 is represented by general formula (3) and R2 is represented by general formula (4).) (In general formula (4), R3 and R4 each independently represents a C1 to C10 monovalent organic group.)