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About reflective LCD Reflective LCD technology is an important element in our recent research plans. Most common mode used in the LCDs. By changing the orientation of the LC with an electric field, the birefringence changes and, with polarizers, controls the transmitted light intensity and color. TN-LCD consists of one polarize and one optical compensator. A GH is an LC material containing a dye or pigment whose light absorption properties vary depending on its orientation.