Gray scale realization in bistable chiral splay nematic liquid crystal device

Chul Gyu Jhun; Ken Chen; Yan Jin; Zhe Hong; Seung Hwan Han; Yong Zhang; Ye Won Seo; Ginah Park; Soon-Bum Kwon; Sung Sik Shin; Joong Ha Lee; Tae-Hoon Yoon; Jae Chang Kim; Suk Moon Chung

doi:10.1117/12.882386

2 February 2011 Gray scale realization in bistable chiral splay nematic liquid crystal device

Chul Gyu Jhun, Ken Chen, Yan Jin, Zhe Hong, Seung Hwan Han, Yong Zhang, Ye Won Seo, Ginah Park, Soon-Bum Kwon, Sung Sik Shin, Joong Ha Lee, Tae-Hoon Yoon, Jae Chang Kim, Suk Moon Chung

Author Affiliations +

Proceedings Volume 7956, Advances in Display Technologies; and E-papers and Flexible Displays; 79560U (2011) https://doi.org/10.1117/12.882386
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

The common feature of bistable liquid crystal displays (LCDs) is the existence of the two stable states without an external field. In the bistable chiral splay nematic (BCSN) mode, the splay and π twist states are used for the two stable states. The BCSN mode is a potential candidate of bistable modes, because it can be operated not only as a storage device, but also as a monostable device with a fast response time in the same panel. The transition between two memory states of the BCSN LCD is strongly coupled with the strength of applied electric fields. In this paper, we investigated the bistable property by calculating the bistable curves and the correlation between the horizontal electric fields strength. To realize the gray scale of BCSN LCD, We also propose a grid electrode structure with the varying-space between electrodes which causes the varying strength of the horizontal electric fields. The selective transitions by the electrode structure are demonstrated in this paper.

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Chul Gyu Jhun, Ken Chen, Yan Jin, Zhe Hong, Seung Hwan Han, Yong Zhang, Ye Won Seo, Ginah Park, Soon-Bum Kwon, Sung Sik Shin, Joong Ha Lee, Tae-Hoon Yoon, Jae Chang Kim, and Suk Moon Chung "Gray scale realization in bistable chiral splay nematic liquid crystal device", Proc. SPIE 7956, Advances in Display Technologies; and E-papers and Flexible Displays, 79560U (2 February 2011); https://doi.org/10.1117/12.882386

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