The effects of the anthraquinone dye on the electro-optical characteristics of DGHPDFLC have been investigated. The results show that PDFLC doped with dichroic dye was found to have no influence on phase separation. When dye concentration is over M483-1.0%, it causes the response time of DGHPDFLC to become slower. the frequency becomes dependent. the rotational viscosity increases, and the tilt angle becomes lower, but, on the whole, electro-optical properties are still very practical.