• 한국정보통신학회논문지
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• 제15권1호
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• pp.183-187
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• 2011

고분자 안정화 블루상 액정셀(Polymer-stabilized blue phase liquid crystal cell)은 ${\mu}s$ 단위의 응답속도와 광시야각 및 액정의 배향을 위한 문지름 과정이 필요 없는 장점이 있다. 그러나 높은 구동전압과 낮은 kerr 상수값으로 인해 유도되는 복굴절의 값이 낮아 고분자 안정화 블루상 액정셀의 전기광학특성을 저해하는 요인이 되었다. 본 논문에서는 지그재그 형태의 전극 구조를 제안하고 시뮬레이션을 통하여 제안된 전극 구조를 가지는 액정셀의 투과율 손실 없이 구동전압을 25%이상 낮출 수 있음을 확인하였다.

• Journal of Information Display
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• 제12권3호
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• pp.115-119
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• 2011

Optically isotropic liquid crystal (LC) mixture such as blue-phase LC and nanostructured LC composites exhibit the advantages of fast response time, high contrast ratio and wide-viewing angle due to the induced birefringence along the horizontal electric field. Utilizing this mixture, a novel single cell gap in-plane switching-type polymer-stabilized blue-phase transflective liquid crystal display by embedding the nanowire grid polarizer as a polarization-dependent reflective polarizer in the R region is proposed. This device can be used as a normal black mode without any quarter-wave plate or patterned in-cell phase retarder. Moreover, the transmittance is identical to the reflectance so that it will be suitable for single gamma driving. Detailed electro-optic performances, such as voltage-dependent light efficiency and viewing angle of the proposed device configuration, are investigated.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.1381-1382
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• 2008

Cholesteric Blue phase (ChBP) is constructed by the regular arrangement of the double helix, whereas the Smectic Blue phase (SmBP) has the inter-connected multi-lamellar structure. Orientation fluctuations of polymer stabilized ChBP and spontaneously super-cooled SmBP are discussed. Spatial topology of the defects play key role on the dynamic properties.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 추계학술대회 논문집
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• pp.190-190
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• 2009

Liquid crystals (LCs) which utilize the phase above blue phase temperature range are also known to format the optically nanostructured composites devices based on Kerr effect these days. We report electro-optical characteristics of the polymer-stabilized cholestric LCs by using UV curable monomers at the different temperatures such as blue phase temperature range, blue phase-isotropic transition temperature, and isotropic temperature range. The devices exhibit different electro-optic characteristics.