Abstract
AbstractWe demonstrate a reflective polarizer‐free display using dye‐doped polymer‐stabilized blue phase liquid crystals (DDPSBP‐LC). The mechanism is mainly the combination of electrically tunable light absorption and Bragg reflection. At the voltage‐off state, the dye molecules and liquid crystals form the structure of the double twist cylinders. As a result, the DDPSBP‐LC is in dark state due to the combination of Bragg reflection and light absorption. At the voltage‐on state, the blue phase structure is unwound locally. The DDPSBP‐LC is then in bright state because of the small light absorption only. The response time of DDPSBP‐LC is fast, the viewing angle is wide, and the optical efficiency is high. The applications of such a switch are shutter glass of 3D displays, and electronic papers.
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