Flexible polyimides are used in flexible circuits and roll-to-roll electronics, while transparent polyimide, also called colourless transparent polyimide or CPI film, has become essential in flexible displays, optical grade films, and thin-film solar cells. Designers of semiconductor polyimide materials look for low dielectric polyimide systems, electronic grade polyimides, and semico... https://hackmd.okfn.de/s/BJu_4-faWl