The film of E-paper display (Electronic Paper Display) is developed by E Ink. At present, this display solution has been widely applied in major factories.

The charged particles in the film adopt microcapsule technology. The bottom layer is TFT glass substrate, which is used to control the floating of charged particles in the microcapsule. FPL is the film, and ITO film in FPL is a transparent conductive film. Its function is the same as that of TFT glass substrate. Black particles in the capsule are negatively charged, white particles are positively charged, and PS at the top layer is the protective layer of the film.

The specific structure of the film is as follows: