Four-domain twisted vertically aligned liquid crystal pixels using microrubbing

S. Varghese, G.P. Crawford, C.W.M. Bastiaansen, D.K.G. Boer, de, D.J. Broer

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    33 Citations (Scopus)
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    Abstract

    Microrubbing (g-rubbing) technique is used to create four-domain twisted vertically aligned liq. crystal pixels for wide viewing angle displays. A metallic sphere of 1 mm diam. is used to locally rub a homeotropic polyimide surface to create a four-domain pixel. We use g-rubbing to accurately control the surface pretilt angle of the liq. crystal from the normal, which directs the liq. crystal mols. to resp. direction on applying a voltage. We report on twisted vertically aligned configurations with sym. isointensity curves, high contrast, and attractive electro-optic performance. The optical simulations of the liq. crystal director orientation, viewing angle characteristics and switching behavior of the four-domain are also presented.
    Original languageEnglish
    Article number181914
    Number of pages3
    JournalApplied Physics Letters
    Volume86
    Issue number18
    DOIs
    Publication statusPublished - 2005

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