Hybrid anchoring for a color-reflective dual-frequency cholesteric liquid crystal device switched by low voltages

Описание

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1364/OME.5.002715

Ключевые слова: Cholesteric liquid crystals, Liquid crystal displays, Liquid crystals, Optical Kerr effect, Optical properties, Surface treatment, Threshold voltage, Display application, Electro-optical, Electrooptical properties, Hybrid surface treatment, Operating voltage, Structural arrangement, Switching voltages, Vertical alignment layer, Display devices

Аннотация: Cholesteric liquid crystal (CLC) materials used in electro-optical (EO) devices are characterized by high operating voltage and slow response speed, which hinders their further development in display applications. Dual-frequency CLCs (DFCLCs) can solve the problem of slow bistable transition, but the operating voltage is still highПоказать полностью, especially in color-reflective DFCLC cells. Here we report a simple approach to lowering the switching voltage as well as to shortening the response time. This technique adopts hybrid surface treatment to modulate the structural arrangement of CLC molecules. Both planar-and vertical-alignment layers are employed and coated on one and the other substrates separately to improve the electro-optical properties of DFCLCs. We show that the threshold voltage for switching can be decreased to as low as 5 V and the shortest response time is measured to be 0.8 ms, which renders CLC EO devices including displays more practical for commercial purpose. (C) 2015 Optical Society of America

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Издание

Журнал: Optical Materials Express

Выпуск журнала: Vol. 5, Is. 11

Номера страниц: 2715-2720

ISSN журнала: 21593930

Место издания: WASHINGTON

Издатель: OPTICAL SOC AMER

Авторы

  • Hsiao Yu-Cheng (Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan)
  • Timofeev Ivan V. (Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660041, Russia)
  • Zyryanov Victor Ya (Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Lee Wei (Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan)

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