Smart Windows with Functions of Reflective Display and Indoor Temperature-control

被引：2

作者：

Lee, I-Hui ^{[1
]}

Chao, Yu-Ching ^{[1
]}

Hsu, Chih-Cheng ^{[1
]}

Chang, Liang-Chao ^{[1
]}

Chiu, Tien-Lung ^{[2
]}

Lee, Jiunn-Yih ^{[3
]}

Kao, Fu-Jen ^{[4
]}

Lee, Chih-Kung ^{[5
]}

Lee, Jiun-Haw ^{[6
]}

机构：

[1] Taipei Municipal Lishan High Sch, Taipei, Taiwan

[2] Yuan Ze Univ, Dept Electroopt Engn, Taoyuan, Taiwan

[3] Natl Taiwan Univ Sci & Technol, Dept Polymer Engn, Taipei, Taiwan

[4] Natl Yang Ming Univ, Sch Med Technol & Engn, Inst Biophoton, Taipei, Taiwan

[5] Natl Taiwan Univ, Inst Appl Mech, Taipei, Taiwan

[6] Natl Taiwan Univ, Grad Inst Electroopt Engn, Taipei, Taiwan

来源：

EMERGING LIQUID CRYSTAL TECHNOLOGIES V | 2010年 / 7618卷

关键词：

cholestreric liquid crystal; nematic; chiral; homeotropic; CHOLESTERIC LIQUID-CRYSTAL; DOPANT; LIGHT; GLASS;

D O I：

10.1117/12.839815

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, a switchable window based on cholestreric liquid crystal (CLC) was demonstrated. Under different applied voltages, incoming light at visible and infrared wavelengths was modulated, respectively. A mixture of CLC with a nematic liquid crystal and a chiral dopant selectively reflected infrared light without bias, which effectively reduced the indoor temperature under sunlight illumination. At this time, transmission at visible range was kept at high and the windows looked transparent. With increasing the voltage to 15V, CLC changed to focal conic state and can be used as a reflective display, a privacy window, or a screen for projector. Under a high voltage (30V), homeotropic state was achieved. At this time, both infrared and visible light can transmit which acted as a normal window, which permitted infrared spectrum of winter sunlight to enter the room so as to reduce the heating requirement. Such a device can be used as a switchable window in smart buildings, green houses and windshields.

引用

页数：7

共 12 条

[1] Electrochromic smart windows: energy efficiency and device aspects [J].