COLOR IMAGE-FORMATION USING POLYMER-DISPERSED CHOLESTERIC LIQUID-CRYSTAL

被引:15
|
作者
KATO, K
TANAKA, K
TSURU, S
SAKAI, S
机构
[1] Interdisciplinary Research Laboratories, Nippon Telegraph and Telephone Corporation, Tokyo
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1993年 / 32卷 / 10期
关键词
PDCLC; POLYMER-DISPERSED LIQUID CRYSTAL; CHOLESTERIC; CHIRAL NEMATIC; SELECTIVE REFLECTION; TRANSPARENT; THERMAL PROCESS;
D O I
10.1143/JJAP.32.4600
中图分类号
O59 [应用物理学];
学科分类号
摘要
A color image has been successfully formed on a stack of polymer-dispersed cholesteric (chiral nematic) liquid crystal (PDCLC) films. A combined image through the stack of PDCLC films that reflect at different wavelengths was simultaneously formed by spot heating using an infrared laser beam while controlling the electric field applied to each film. The image is written by an electric-field-assisted thermal process, in which, after partial heating, regions. cooled with a field become selectively reflective and regions cooled without a field become transparent. A combined image on a two-layer stack of PDCLC films showed the feasibility of color image formation. A memory eff ect maintains the image for a long period without any holding techniques, and the image can easily be changed, hence, the stack of PDCLC films can be used repeatedly.
引用
收藏
页码:4600 / 4604
页数:5
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