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Title: Bistable liquid crystal device
Authors: Kwok, Hoi-Sing
Yu, Xing-Jie
Keywords: Bistable liquid crystal displays
Bistable twisted nematic
Issue Date: 7-Jul-2009
Citation: US Patent 7,557,884 B2, 2009
Abstract: This invention provides a bistable liquid crystal device. The bistable liquid crystal device includes a first substrate having thereon a first conductive layer and a first alignment layer; a second substrate having thereon a second conductive layer and a second alignment layer; and a liquid crystal layer sandwiched between the first and second alignment layers. The first alignment layer induces a first pretilt angle θ1 in the range of 20°-65° between the liquid crystal layer in contact with the first alignment layer. The second alignment layer induces a second pretilt angle θ2 in the range of 20°-65° between the liquid crystal layer in contact with the second alignment layer. The liquid crystal layer is capable of maintaining a stable bend state or a stable splay state at zero bias voltage and is switchable between the stable bend state and the stable splay state when a switching energy is applied in operation to the liquid crystal layer.
Rights: This patent is also available at HKUST Technology Transfer Center Patent Search at <>
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