| 摘要 |
A process for the production of an element substrate, characterized by including: a step (a) of applying a polyimide-based film-forming composition which comprises both a polyamic acid that contains a structural unit represented by general formula (1) and an organic solvent to a supporting body, and drying the resulting coating to form a coating film that contains the polyamic acid; a step (b) of heating the coating film to form a polyimide-based film; a step (c) of forming an element on the polyimide-based film; and a step (d) of peeling the polyimide-based film which has the element thereon from the supporting body. In general formula (1), multiple R1s are each independently a monovalent organic group having 1 to 20 carbon atoms; and n is an integer of 1 to 100. |
