title: Long memory retention time and high contrast ratio in a tristate liquid crystal display device.
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.
authors.affiliation: Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi-do, South Korea.
authors.forename: Taehyung
authors.initials: T
authors.lastname: Kim
authors.forename: Joong Ha
authors.initials: JH
authors.lastname: Lee
authors.forename: Byung Wok
authors.initials: BW
authors.lastname: Park
authors.forename: Ki-Han
authors.initials: KH
authors.lastname: Kim
authors.forename: Tae-Hoon
authors.initials: TH
authors.lastname: Yoon
authors.forename: Suk-Won
authors.initials: SW
authors.lastname: Choi