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http://dx.doi.org/10.3807/HKH.2008.19.3.161

Electro-optical Characteristics of the Dual-frequency Bistable Nematic Liquid Crystal Cell with Pixel-isolating Polymer Wall  

Lee, Seong-Ryong (School of Electrical Engineering, Pusan National University)
Lee, Joong-Ha (School of Electrical Engineering, Pusan National University)
Shin, Jae-Hoon (School of Electrical Engineering, Pusan National University)
Song, Dong-Han (School of Electrical Engineering, Pusan National University)
Yoon, Tae-Hoon (School of Electrical Engineering, Pusan National University)
Kim, Jae-Chang (School of Electrical Engineering, Pusan National University)
Publication Information
Korean Journal of Optics and Photonics / v.19, no.3, 2008 , pp. 161-168 More about this Journal
Abstract
We propose a novel bistable nematic liquid crystal cell, which has a dual-frequency liquid crystal material and pixel-isolating polymer wall formed by an anisotropic phase separation of a mixture of liquid crystals and UV-curable pre-polymers. The proposed cell has two stable states of left- and right-handed ${\pi}$-twist. The switching between the two states is achieved by using a sequential waveform of low and high frequencies. A transmissive bistable liquid crystal display is designed, which achieves high contrast ratio by using the proposed cell and optical films.
Keywords
쌍안정 액정디스플레이;이중주파수$180^{\circ}$;트위스트;화소고립;폴리머 격벽;
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