Smart Glass is the name of glasses which the PDLC film is incorporated to the glass. This film can be attached to already installed glass or being laminated to create laminated smart glass.
Polymer Dispersed Liquid Crystal (PDLC) consists of micron sized droplets of liquid crystal dispersed in an optically isotropic polymer matrix. This smart film can be electrically switched from a light-scattering or opaque “off state” to a non-scattering or transparent “on state”. In the “off state”, Smart film/Privacy film appears milky white due to the refractive index mismatch encountered by incoming light at the liquid crystal/polymer interface.