X-ray Scattering Studies of Phase-Separated Composite Organic Film Cells
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概要
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The authors report X-ray scattering experiments on phase-separated composite organic film (PSCOF) structures mixed with ferroelectric liquid crystals (FLCs). We discuss the effect of the local layer structure in a PSCOF cell on the ratio of the concentration between prepolymer and liquid crystals. The ratio of optimized concentration in terms of optical characteristics for a PSCOF liquid crystal display are 30 wt % for prepolymer (NOA65) and 70 wt % for FLCs (Felix). We found that the layer structure in a ferroelectric liquid crystal cell made of 30 wt % NOA65 and 70 wt % Felix is a tilted-bookshelf layer structure. The angles 15 and 17° are the tilted-bookshelf angles at 65 and 58 °C, respectively. These layer tilt angles are almost same as the molecular tilt angles of ferroelectric liquid crystals in the Sm C* phase. We understand that this result comes from compensating for layer buckling. We consider that the PSCOF-mode local layer structure is an excellent solution to the problem of zig-zag defects and mechanical shock for application in future televisions and plastic ferroelectric liquid crystal displays (FLCDs).
- 2008-02-25
著者
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Choi Hong
Department Of Chemistry Dongeui University
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Kumar Satyendra
Department Of Physics Kent State University
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Shin Sung-tae
Department Of Applied Physics Korea University
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Kim Dong-Woo
Department of Applied Physics, Korea University, Chungnam 339-700, Korea
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Kim Dong-Woo
Department of Applied Physics, Korea University, Seoul 136-713, Korea
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Rhie Kung-Won
Department of Applied Physics, Korea University, Seoul 136-713, Korea
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Hong Mun-Pyo
Department of Applied Physics, Korea University, Seoul 136-713, Korea
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Jang Won-gun
Micro-optics Team, Korea Photonics Technology Institute, Gwangju 971-35, Korea
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Lee Baek-woon
LCD Business Unit, Samsung Electronics Corp., Gyeonggi 449-711, Korea
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Kim Kyeong-hyeon
LCD Business Unit, Samsung Electronics Corp., Gyeonggi 449-711, Korea
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Hong Mun-Pyo
Department of Applied Physics, Korea University, Chungnam 339-700, Korea
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Shin Sung-Tae
Department of Applied Physics, Korea University, Seoul 136-713, Korea
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Choi Hong
Department of Applied Physics, Korea University, Seoul 136-713, Korea
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Kumar Satyendra
Department of Physics, Kent State University, Kent, OH 44242, U.S.A.
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