Switchable privacy pdlc film is a kind of intelligent film, which directly attaches the film to the glass, and then the voltage makes the light-adjusting film penetrate and fog, which realizes the double requirement of glass penetration and privacy protection, even when opaque, The lighting is still very good, which is currently impossible to achieve with all the curtains, and has an insulation reflection effect on the thermal energy of the light, which makes the indoor warm and cool in summer, environmental protection and energy saving. This product utilizes the optical properties of liquid crystals to achieve the photovoltaic function of the film.