Direct Control of Liquid Crystal Pretilt Angle by Deposition of Oxygen-Doped SiC Alignment Layers
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概要
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In this paper, we propose a technique for the alignment of liquid crystals (LCs) on SiOxCy ($x + y \approx 2$) films, where the pretilt angle can be directly controlled by adjusting the carbon content, $y$, of the films deposited at room temperature by oblique evaporation. LC cells with an arbitrary pretilt angle can be obtained simply by controlling the $y$ value between 0.05 and 0.2 at the film surfaces. LCs can be aligned vertically or homogeneously by making use of the hydrophilic or hydrophobic properties of the film surfaces, respectively. We found that the LCs aligned by the proposed technique exhibit electro-optic characteristics similar to those of LCs aligned on rubbed polyimides.
- 2009-09-25
著者
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Kim Jae
School Of Chemical Engineering College Of Engineering Seoul National University
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Yoon Tae-Hoon
School of Electrical Engineering, Pusan National University, Busan 609-735, Korea
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Son Phil
School of Electrical Engineering, Pusan National University, Busan 609-735, 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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Rho Soon
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Kim Jang
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Kim Shi
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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Kim Shi
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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Kim Jang
Display R&D Center, LCD Business, Samsung Electronics Co., Ltd., Gyeonggi-do 446-711, Korea
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