| abstract |
An object of the present invention is to provide a method for producing a polyimide film or a polyimide film which can suppress warpage caused by fluctuations in a humidity environment when used in a laminated electronic device, and to provide the polyimine A flexible printed circuit board for a film, a substrate for a flexible display, a front panel for a flexible display, an LED illumination device, and an organic electroluminescence display device. The polyimine film of the present invention is a polyimine film containing a colorless transparent soluble polyimine, which is characterized by containing an organic additive having an aromatic ring in the molecule in a range of 0.1 to 40% by mass. . |