한국정보디스플레이학회:학술대회논문집
- 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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- Pages.839-842
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- 2004
Electro-optical devices from polymer-stabilized liquid crystals with molecular shape polarity
- Kim, Sang-Hwa (Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University) ;
- Chien, Liang Chy (Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University) ;
- Komitov, Lachezar (School of Physics and Engineering physics, Chalmers University of Technology and Gothenburg University)
- 발행 : 2004.08.23
초록
We present a fast-switching electro-optical device based on flexoelectro-optic effect in short pitch cholesterics oriented in uniform lying helix texture. The device has two operating modes: amplitude and phase modulation mode. The amplitude modulation mode is a fast in-plane switching of the device optic axis that enables to achieve a high percent of modulation of the transmitted light intensity whereas the phase mode gives a continuous change of the refractive index and thus of the phase shift of the transmitted light. By using a small concentration of diacrylate monomer and selecting the illumination conditions we have been able to create a inhomogeneous polymeric network mostly localized at both substrate surfaces and stabilize the two switching modes.
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