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

被引：18

作者：

Hsiao, Yu-Cheng ^{[1
]}

Timofeev, Ivan V. ^{[2
,3
]}

Zyryanov, Victor Ya ^{[2
]}

Lee, Wei ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan

[2] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

[3] Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660041, Russia

来源：

OPTICAL MATERIALS EXPRESS | 2015年 / 5卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

PHOTONIC STRUCTURE; MODULATION;

D O I：

10.1364/OME.5.002715

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 high, 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

引用

页码：2715 / 2720

页数：6

共 17 条

[1] Photoinduced helical inversion in cholesteric liquid crystal cells with homeotropic anchoring [J].