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- 주제어 : Cholestericliquid crystal (검색결과 1 건)
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Baek, Jong-Min,Oh, Seung-Won,Kim, Sang-Hyeok,Yoon, Tae-Hoon Elsevier 2018 Displays Vol.52 No.-
<P><B>Abstract</B></P> <P>A dye-doped cholesteric liquid crystal (LC) cell with the focal-conic initial state is demonstrated. Although dye-doped LC/polymer composites have been widely used for LC light shutters, dye-doped LC cells with polymer structures suffer from the degradation of dichroic dyes during the UV curing process. To avoid this problem, we propose a dye-doped cholesteric LC cell using vertical alignment layers instead of polymer structures. We have shown that the focal-conic initial state can be obtained by homeotropic anchoring without the polymer structure. The proposed device not only provides the black color but can also hide objects behind a display panel in the focal-conic initial state without the degradation of dichroic dyes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We propose a dye-doped cholesteric LC cell using vertical alignment layers. </LI> <LI> The proposed device provides black color and hides objects behind a display panel. </LI> <LI> The focal-conic initial state can be obtained without the degradation of dyes. </LI> </UL> </P>
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