Patent ID: 9223168
Filing Date: 2015-12-29
Classification: G02F

Abstract:
1. A polymer dispersed liquid crystal (PDLC) film structure, comprising: a first substrate and a second substrate disposed facing each other; and a PDLC layer filled between the first substrate and the second substrate, wherein a transparent electrode is provided on a surface of the first substrate which faces the second substrate, and a plurality of control units are provided on a surface of the second substrate which faces the first substrate, each control unit comprising a first thin film field effect transistor and a first transparent electrode connected thereto, and a second thin film field effect transistor and a second transparent electrode connected thereto, wherein the control units are configured so that, upon the PDLC film structure being turned on, the first transparent electrode and the second transparent electrode are controlled to have a same polarity, which is opposite to that of the transparent electrode on the first substrate, by using the first thin film filed effect transistor and the second thin film field effect transistor, respectively; and upon the PDLC film structure being turned off, the first transparent electrode and the second transparent electrode are controlled to have different polarities by using the first thin film filed effect transistor and the second thin film field effect transistor, respectively, causing liquid crystal molecules in the PDLC layer to return to a scattering state.