• Title/Summary/Keyword: achromaticity

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High-brightness and wide-view transflective liquid crystal display with two in-cell imprinted optical films in an inverse-twisted-nematic geometry

  • Na, Jun-Hee;Cho, Seong-Min;Lee, Sin-Doo;Lim, Yong-Woon
    • Journal of Information Display
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    • v.12 no.1
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    • pp.11-15
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    • 2011
  • An inverse-twisted-nematic (ITN) transflective (TRF) liquid crystal (LC) display, where two imprinted optical films (IOFs) with surface microstructures are embedded was developed. One of the IOFs serves as an in-cell patterned retarder with multioptic axes, and the other behaves as a viewing-angle enhancement film. In the presence of an applied voltage, the surface microstructures on the IOFs provide the spontaneous twist of the LC from a vertically aligned state to a $90^{\circ}$ twisted-nematic (TN) state in the transmissive part, and to a $45^{\circ}$ TN state in the reflective part. The developed ITN TRF LC display exhibits high transmission and reflectance, fast response, and wide-viewing characteristics, along with achromaticity.