研究等業績 - 国際会議プロシーディングス - 山口 留美子
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Homogeneous-twisted nematic transition mode liquid crystal display by out-of-plane field
Yamaguchi R, Sakamoto Y
Proceedings of the International Display Workshops 1 192 - 195 2017年 [査読有り]
研究論文（国際会議プロシーディングス）
: We have proposed a low driving LCD mode which changes from a homogeneous orientation to a TN orientation by applying out-of-plane field. The LC is sandwiched between weak and strong anchoring surfaces and easy axes of two surfaces are at right angles. LC director distributions and electro optical properties are numerically analyzed. A transmittance of the cell between crossed polarizers is 0% because of the homogeneous orientation in the voltage off state. Tilt and twist angles of LCs simultaneously increase and the transmittance also increases almost to 100% by the applied voltage of 1.5V, subsequently decreases to 0% by the voltage of 2.5 V.
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Inoue K.
23rd International Display Workshops in conjunction with Asia Display, IDW/AD 2016 ( 23rd International Display Workshops in conjunction with Asia Display, IDW/AD 2016 ) 2 706 - 707 2016年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Effect of UV absorption anisotropy on hybrid aligned polymer stabilized liquid crystal cell
Rumiko Yamaguchi, Koichi Inoue, Tomoya Takasu
Proc. of SPIE ( 9940 ) 994004-1 - 994004-7 2016年08月 [査読有り] [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
We have proposed a hybrid alignment nematic (HAN) liquid crystal cell using a polymer stabilized (PS) technology. The
cell shows a reverse mode scattering property. The PS-HAN cell is transparent at any viewing angle in the off-state and
has an asymmetrical scattering property at incident angles in the on-state. Applying the cell to a smart glass, it cell can
selectively scatter a midday sunlight with a function of window blinds. In this study, two polymerization processes, an
irradiation with UV light from planar and vertical aligned sides of the cell have been investigated. UV penetration depth
has also been estimated from planar and vertical aligned sides of the cell. LC materials with different UV absorption spectra
were prepared. A driving voltage, an optical property and a polymer morphology were measured in PS-HAN cells. The
UV intensity profile have an effect on polymer density and particle size, which changed the driving voltage and the light
scattering property in the PS-HAN cell. The study on the UV penetration in the polymer stabilized technology can improve
their performance. -
UV absorption anisotropy in hybrid aligned polymer stabilized liquid crystal cell
Rumiko Yamaguchi, Koichi Inoue, Tomoya Takasu, Shota Mitsuhashi
The paper of joint thechnical meeting on "dielectrics and "electrical insulation" and "electronic materials", IEE Japan 16 ( 014 ) 29 - 32 2016年01月 [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
We have proposed a hybrid alignment nematic liquid crystal cell using a polymer stabilized technology. The cell shows a reverse mode scattering property and is transparent at any viewing angle in the off-state. The cell turns to opaque in the on-state and has an asymmetrical scattering property at incident angles. The cell has been prepared by polymerizing a reactive mesogen with UV irradiation in the liquid crustal solution. When liquid crystal materials have UV absorption anisotropy, a UV penetration depth from a planar alignment side depth should be shorter than that from a vertical alignment side in a polymerization process. In this report, a UV penetration depth is carefully considered in a polymerization process using liquid crystal materials with large and small UV absorption anisotropy. Next, electro-optical properties are measured and polymer morphologies are observed by using SEM. The UV irradiation from a planar alignment substrate side causes a polymer rich layer near the UV irradiated substrate and the stronger scattering in the on-state when the liquid crystal has large UV absorption anisotropy. Applying the cell to a smart glass, the cell can selectively scatter a midday sunlight with a function of window blinds.
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Response properties of twisted nematic liquid crystal gratings
Michinori H.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 494 - 495 2015年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Mechanism of low driving voltage in polymer stabilized reverse mode cell
Koichi I., Rumiko Y.
Proceedings of the International Display Workshops 1 454 - 455 2015年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Mechanism of low driving voltage in polymer stabilized reverse mode cell
Koichi I.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 454 - 455 2015年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Honma M.
21st International Display Workshops 2014, IDW 2014 ( Proceedings of the International Display Workshops ) 1 117 - 118 2014年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Switchable liquid crystal window for daylight control with asymmetrical incident angle
Takasu T.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 229 - 230 2013年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Sakurai S.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 227 - 228 2013年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Electro-optical properties in polymer stabilized reverse mode liquid crystal display
Yamaguchi R.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 99 - 100 2012年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Selection of easy axis by liquid crystal on rubbed PVCi surface
Yamaguchi R.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 107 - 108 2010年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Security applications of liquid crystal film with plural latent images
Yamaguchi R.
Proceedings of SPIE - The International Society for Optical Engineering ( Proceedings of SPIE - The International Society for Optical Engineering ) 7232 2009年04月 [査読有り] [招待有り]
研究論文（国際会議プロシーディングス）
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Photo degradation properties in oriented liquid crystal modes
Yamaguchi R.
IDW '08 - Proceedings of the 15th International Display Workshops ( Proceedings of the International Display Workshops ) 3 1661 - 1664 2008年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Photostability evaluation of liquid crystal cell by far field pattern observation
Yamaguchi R.
IDW '07 - Proceedings of the 14th International Display Workshops ( Proceedings of the International Display Workshops ) 3 1677 - 1680 2007年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Multidomain liquid crystal alignment properties on anchoring controllable polymer surface
Yamaguchi R. Sato S.
Proceedings of SPIE - The International Society for Optical Engineering ( Proceedings of SPIE - The International Society for Optical Engineering ) 6654 2007年12月 [査読有り] [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
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White fluorescent liquid crystal display using guest-host and scattering modes
Yamaguchi R.
IDW '06 - Proceedings of the 13th International Display Workshops ( Proceedings of the International Display Workshops ) 1 193 - 196 2006年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Color switching in liquid crystal display using high dichroic fluorescent dyes
Yamaguchi R.
IDW/AD'05 - Proceedings of the 12th International Display Workshops in Conjunction with Asia Display 2005 ( Proceedings of the International Display Workshops ) ( 1 ) 127 - 130 2005年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Optical phase-control devices using liquid crystal molecular orientation density
Yanase S.
Proceedings of SPIE - The International Society for Optical Engineering ( Proceedings of SPIE - The International Society for Optical Engineering ) 5936 1 - 8 2005年12月 [査読有り]
研究論文（国際会議プロシーディングス）
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Yamaguchi R.
Proceedings of SPIE - The International Society for Optical Engineering ( Proceedings of SPIE - The International Society for Optical Engineering ) 5618 166 - 173 2004年12月 [査読有り]
研究論文（国際会議プロシーディングス）