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UV 광배향법을 통한 광폴리머와 수직 폴리이미드 혼합 배향막의 수직 배향 특성 연구

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Study of Homeotropic Liquid Crystal Characteristics Using Photo-polymer and Homeotropic Polyimide Blended Alignment Layer via UV Irradiation Method

Jin Woo Lee
J Electr Electron Mater 2012;25(12):996-999.
Published online: December 1, 2012
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PVCi와 수직 폴리이미드 혼합 배향막에 UV 조사를 통해 수직 액정 배향을 구현하였다. VA 모드에서 다양한 PVCi 도핑 농도에 따라 문턱전압을 측정하였다. 또한 응답속도도 PVCi 농도에 따라 측정하였다. 이를 통해 가장 좋은 성능을 나타내는 도핑 농도를 결정할 수 있었다. 이때 가시파장 영역의 투과율 곡선을 살펴보면 수직 폴리이미드의 투과율에 근접하는 70% 정도의 투과율을 나타낸다.

From UV irradiation, we achieved homeotropic liquid crystal alignment on blended photo-polymer layer which is composed of polyvinyl-cinnamate (PVCi) and homeotropic polyimide (PI). From vertical alignment (VA) mode, we measured threshold voltages by various PVCi doping concentration. Also, the rise time and fall time of VA cells were measured to verify the best doping concentration. Transmittance curves showed about 70% value between 380 nm and 780 nm wavelength which mean visible region.

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Study of Homeotropic Liquid Crystal Characteristics Using Photo-polymer and Homeotropic Polyimide Blended Alignment Layer via UV Irradiation Method
J Electr Electron Mater. 2012;25(12):996-999.   Published online December 1, 2012
Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.

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Include:
Study of Homeotropic Liquid Crystal Characteristics Using Photo-polymer and Homeotropic Polyimide Blended Alignment Layer via UV Irradiation Method
J Electr Electron Mater. 2012;25(12):996-999.   Published online December 1, 2012
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