Materials 2009, 2(4), 1636-1661; doi:10.3390/ma2041636
Review

Development of Highly Soluble Anthraquinone Dichroic Dyes and Their Application to Three-Layer Guest-Host Liquid Crystal Displays

Hiroki Iwanagaemail
Corporate Research & Development Center, Toshiba Corporation, 1 Komukai-Toshiba-cho, Saiwaiku, Kawasaki 212-8582, Japan
Received: 31 August 2009; in revised form: 9 October 2009 / Accepted: 21 October 2009 / Published: 23 October 2009
(This article belongs to the Special Issue Liquid Crystals)
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Abstract: The relationships between molecular structures and properties of anthraquinone dichroic dyes were studied and dyes with large solubilities and dichroic ratios were developed. The yellow anthraquinone dye behaves as a quencher of the coumarin dye, and the mixture has a large absorption coefficient without fluorescence. These technologies can enlarge the color reproduction area of three-layer guest-host liquid crystal displays (GHLCDs) 1.6-fold. The performances of the prototype reflective three-layer GH-LCDs are as follows: the white state luminous reflectance is 43% and the contrast is 5.3, indicating that they are promising candidates for portable information systems with full-color images.
Keywords: anthraquinone dichroic dyes; coumarin dye; solubility; three-layer GH-LCDs; fluorinated liquid crystals

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Cite This Article

MDPI and ACS Style

Iwanaga, H. Development of Highly Soluble Anthraquinone Dichroic Dyes and Their Application to Three-Layer Guest-Host Liquid Crystal Displays. Materials 2009, 2, 1636-1661.

AMA Style

Iwanaga H. Development of Highly Soluble Anthraquinone Dichroic Dyes and Their Application to Three-Layer Guest-Host Liquid Crystal Displays. Materials. 2009; 2(4):1636-1661.

Chicago/Turabian Style

Iwanaga, Hiroki. 2009. "Development of Highly Soluble Anthraquinone Dichroic Dyes and Their Application to Three-Layer Guest-Host Liquid Crystal Displays." Materials 2, no. 4: 1636-1661.

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