AROMATIC POLYAMIDE SOLUTION FOR PRODUCING DISPLAY ELEMENT, OPTICAL ELEMENT, OR ILLUMINATION ELEMENT

摘要

The present disclosure according to one or more embodiments relates to a polyamide solution that can reduce the Rth of a cast film. The present disclosure according to one or more embodiments relates to a polyamide solution including an aromatic polyamide and a solvent, wherein: said aromatic polyamide is constituted by at least two repeating units; at least one of said repeating units includes one or more free carboxyl groups; and the elastic modulus at 30°C of a film prepared by being cast on a glass plate is 5.0 GPa or less, and the coefficient of linear expansion (CTE) of the film is greater than 30.0 ppm/K.