Dye-doped cholesteric liquid crystal light shutter with a polymer-dispersed liquid crystal film. (November 2016)

• Record Type: Journal Article
• Authors: Oh, Seung-Won; Baek, Jong-Min; Heo, Joon; Yoon, Tae-Hoon
• Is Part Of: Dyes and pigments. Volume 134(2016)
• Page Start: 36
• Page End: 40
• Publication Date: 2016-11
• Subjects: Light shutter -- Polymer-dispersed liquid crystal -- Cholesteric liquid crystal -- See-through display; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2016.06.045
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A light shutter, which consists of a dye-doped cholesteric liquid crystal (ChLC) layer and a polymer-dispersed liquid crystal (PDLC) film, for simultaneous control of haze and transmittance is demonstrated. In the opaque state, it can not only provide a black color by using the dye-doped ChLCs but also hide the objects behind the display panel by using the PDLC film. The proposed light shutter shows a high haze value of 90.7% with a low specular transmittance of 1.20%. By switching the proposed light shutter placed at the back of a see-through display, we can choose between the see-through mode and the high-visibility mode in a see-through display. Graphical abstract: Highlights: We propose a light shutter consisting of a dye-doped ChLC layer and a PDLC film. We can simultaneously control haze and transmittance. It can provide the black color and hide the objects behind the display panel.