PNLC Smart Film

PNLC smart film, also is called adverse PDLC smart film, is different from normal PDLC smart film. The working principle of PNLC film: It's opaque when power is on,  clear power is off.
The electric field enables a rapid transition from the ON status to the OFF status and from the OFF status to the ON status.
Smart film is usually applied to the surface of the glass or laminated between the glass layers, making the otherwise transparent glass, more possible