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Texture evolution of cholesteric liquid crystal driven by a thermal process |
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| Authors: | HK Lin YF HuangAC Chen PW Liu |
| Institution: | a Laser Application Technology Center/Industrial Technology Research Institute South (ITRI South), 8, Gongyan Rd., Liujia Shiang, Tainan county 734, Taiwan, ROC b Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan, ROC c Display Technology Center Industrial Technology Research Institute, Hsinchu, Taiwan, ROC d New Materials Research & Development Department, China Steel Corporation, Kaohsiung, Taiwan, ROC |
| Abstract: | Cholesteric liquid crystal displays (Ch-LCDs) have potential as screens in portable readers. In the present study, it is demonstrated that a Ch-LCD can be driven by a thermal process at a temperature of 90 °C. At a suitable temperature, the texture of the cholesteric liquid crystal will be transfrred from planar to focal conic. The experimental results show that the reflectance of a Ch-LCD is influenced by texture after the thermal process. After thermal treatment at 90 °C, the periodicity was reduced from 63 nm to 55 nm. A chain tilting angle of ∼29° was estimated. |
| Keywords: | Cholesteric liquid crystal display (Ch-LCD) X-ray Ag layer |
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