Conformable displays based on polymer-dispersed liquid-crystal materials on flexible substrates

被引：21

作者：

Cairns, D.R. ^{[1
]}

Gorkhali, S.P. ^{[1
]}

Esmailzadeh, S. ^{[1
]}

Vedrine, J. ^{[1
]}

Crawford, G.P. ^{[1
]}

机构：

[1] Brown University, Division of Engineering, Providence, RI 02912, Box D

来源：

Journal of the Society for Information Display | 2003年 / 11卷 / 2 SPEC ISS.期

关键词：

Flexible displays; Flexible substrates; PDLC; Reflective displays;

D O I：

10.1889/1.1825658

中图分类号：

学科分类号：

摘要：

We have developed a process that enables one to conform polymer-dispersed liquid-crystal (PDLC) displays into a particular shape indefinitely. Planar PDLC displays are first fabricated between indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrates. This fully functional display can then be conformed to a particular shape by heating above the glass-transition temperature of PET and then allowing it to cool down to room temperature. The display retains its shape and is fully functional after processing. We have created spiral-and wave-like samples and have demonstrated their operation after the conformal process. The stress is relieved in the substrate by conforming. Temperature effects on polymer substrates were investigated for two types of polymer films (PET/ITO substrates and a conducting polymer PEDOT:PSS/PET substrate) to analyze the effects of temperature on the resistance and mechanics of the films under an applied uniaxial strain. We have found a decrease in contrast of the PDLC after conforming, but surprisingly, a reduced threshold voltage and reduced hysteresis occurs.

引用

页码：289 / 295

页数：6

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