Fast Switching of Vertical Alignment Liquid Crystal Cells with Liquid Crystalline Polymer Networks
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概要
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This paper reports on the electro-optic characteristics of vertical alignment (VA) liquid crystal (LC) cells with liquid crystalline polymer networks. Optical bouncing, that occurs during the turn-on of VA cells, can be eliminated by introducing in-cell polymer networks. Furthermore, the turn-off also becomes much faster because of the anchoring effect caused by the anisotropy in the molecular shape of the liquid crystalline polymers. These response times have been found to vary for different LC/prepolymer mixtures. When the concentration of the liquid crystalline prepolymer in the initial LC/prepolymer mixture was 3, 5, or 10 wt %, the response times were measured to be 34, 56, and 87% faster than those of a VA cell with pure LC. These switching behaviors of VA cells with liquid crystalline polymer networks are demonstrated and compared with those using pure LC and with polymer networks made of isotropic prepolymers.
- 2009-05-25
著者
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Kim Jae
School Of Chemical Engineering College Of Engineering Seoul National University
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Baek Jong-In
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Souk Jun
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Kim Ki-Han
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Yoon Tae-Hoon
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Woo Hwa
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Shin Sung
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Woo Hwa
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Shin Sung
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Yoon Tae-Hoon
School of Electrical Engineering, Engineering, Research Institute of Computer, Information and Communication, Pusan National University, Busan 609-735, Korea
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Kim Jae
School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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