| abstract |
(57) [Abstract] [PROBLEMS] To be photosensitive and developable with a weak alkaline aqueous solution, Provided is a method for manufacturing a high-density flexible substrate that can be used as it is as a high-density flexible substrate. SOLUTION: (1R, 1'S, 3R, 3'S, 4R, 4R, 4R, 4R, 4R, 4R, 4R, 4R) ' S) -Dicyclohexyl-3,3'4,4'-tetracarboxylic dianhydride, an imidosiloxane oligomer obtained by reacting an aromatic diamine having a reactive functional group on a benzene ring with a diaminopolysiloxane and imidizing − Alternatively, a pattern of a photosensitive ink containing a photosensitive imide siloxane component, which is a reaction product of a polyimide siloxane and a compound having a photosensitive group, is exposed to light, developed with an aqueous alkali solution, and post-baked to reduce the insulating property. A method for producing a high-density flexible substrate that forms an elastic coating. |