• Title/Summary/Keyword: Optically Compensated Splay

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Study on Electric characteristics of Optically Compensated Bend formed initially bend state by Reactive Mesogen monomer (RM 단분자를 이용한 초기 밴드 상태 OCB 셀의 전기적 특성 연구)

  • Jeon, Eun-Jeong;Kim, Seong-Su;Lim, Young-Jin;Lee, Myoung-Hoon;Lee, Seung-Hee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.04a
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    • pp.49-50
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    • 2008
  • OCB mode has advantages such as fast response time and wide viewing angle. But it has inevitable shortcoming which initial splay state must be changed to bend state. To overcoming this problem, OCB cell filled LC with RM monomer was cured by UV when voltage applied. Through previously mentioned methods, even if electric field is none, bend state was made by stabilized LC director. In this paper, we investigated the electric characteristics of polymer stabilized OCB mode.

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Study on Electro-optic Characteristics of the Optically Compensated Bend Liquid Crystal Display Using UV Curable Monomer (광경화성 단분자를 이용한 광학 보상 휨 액정 디스플레이의 전기광학 특성연구)

  • Lim, Young-Jin;Jeon, Eun-Jeong;Kwon, Dong-Won;Kim, Jeong-Hwan;Jeong, Kwang-Un;Lee, Myong-Hoon;Lee, Seung-Hee
    • Polymer(Korea)
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    • v.33 no.5
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    • pp.496-500
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    • 2009
  • Optically compensated bend liquid crystal display (OCB-LCD) has many application fields owing to its fast response time and wide viewing angle. However, in order to operate the OCB-LCD in bend state, this device needs quick transitions from the initial splay state to bend state. Unlike conventional approach using transient high voltage for the transition, the OCB-LCD with high surface tilt angle, which was achieved by polymerization of UV curable reactive mesogen monomer under certain voltage, was manufactured and the cell showed bend state initially. Electro-optic and electrical characteristics of the cell were analyzed. The cell shows a fast response time owing to high surface pretilt angle and very low residual DC less than 0.1 V although another polymer layer is formed above polymer alignment layers.