Quasi-guest-host-effect liquid crystal displays: a new kind of positive contrast liquid crystal display device

Jinggang Zhao; Zemin Yang; Zaigang Sun; Peng Sun; Junyu Sha; Jian Gao

doi:10.1117/12.253369

30 September 1996 Quasi-guest-host-effect liquid crystal displays: a new kind of positive contrast liquid crystal display device

Jinggang Zhao, Zemin Yang, Zaigang Sun, Peng Sun, Junyu Sha, Jian Gao

Author Affiliations +

Proceedings Volume 2892, Display Devices and Systems; (1996) https://doi.org/10.1117/12.253369
Event: Photonics China '96, 1996, Beijing, China

Abstract

A new kind of liquid crystal display (LCD) which positive dichroic dye disperses in LC is described in this paper. The quasi guest-host effect LCD is composed of a polarizer, twisted-nematic effect liquid crystal layer, and a guest- host effect liquid crystal layer which positive dichroic dye disperses in positive dielectric anisotropy nematic LC. Its multiplexing ability is as high as that of the twisted- nematic effect, and its contrast is as high as that of the guest-host effect of negative contrast display. The technological conditions of the new kind of LCD are similar to those of twisted-nematic LCD. The unfavorable factors are that it needs two liquid crystal layers and that the weight increases to some degree.

Citation Download Citation

Jinggang Zhao, Zemin Yang, Zaigang Sun, Peng Sun, Junyu Sha, and Jian Gao "Quasi-guest-host-effect liquid crystal displays: a new kind of positive contrast liquid crystal display device", Proc. SPIE 2892, Display Devices and Systems, (30 September 1996); https://doi.org/10.1117/12.253369

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