COMPOSITION FOR POLYIMIDE FILM FOR FLEXIBLE SUBSTRATE OF OPTOELECTRONIC DEVICE

摘要

The present invention relates to a polyimide precursor composition for a flexible substrate of an optoelectronic device, the composition containing a polyimide precursor derived from a diamine or acid dianhydride and having a structure of chemical formula 1, and to a polyimide film manufactured from the same. The polyimide film, which is obtained by coating and curing the precursor composition according to the present invention on a substrate, retains high transparency and heat resistance, and has excellent dimensional stability due to no increase in the substrate stress in spite of high-temperature heat treatment.