Long memory retention time and high contrast ratio in a tristate liquid crystal display device |
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| Authors: | Kim Taehyung Lee Joong Ha Park Byung Wok Kim Ki-Han Yoon Tae-Hoon Choi Suk-Won |
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| Affiliation: | Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi-do, South Korea. |
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| Abstract: | We propose a method to obtain long memory retention time and high contrast ratio in a tristate liquid crystal display device. The proposed device has three unique liquid crystal (LC) states that are known as splay, π twist, and bend, with different operating schemes for the two modes of operation, which are the memory (M) mode or dynamic (D) mode. A form of selective vertical or horizontal switching changes the optically compensated π twist LC as a common black state in both the M and D modes into a bend LC state for the D mode or into the splay LC state for the M mode, respectively. |
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