Finnegan, Henderson, Farabow, Garrett & Dunner
Liquid crystal panel with memory function
 A liquid crystal panel has a memory function that is reliable for a long time. The panel employs a ferroelectric or antiferroelectric liquid crystal material involving at least two kinds of layer structures of minimum energy. The layer structures are defined at least by (1) a c-director parameter that is in parallel with substrates of the panel and has at least one minimal value, or (2) an a-director parameter that is orthogonal to the substrates and has at least one maximal value. Due to these layer structures, the panel is stable, resistant to mechanical and electrical stress, reliable in operation, and excellent in memory function. 
Citizen Watch Co., Ltd.
G
G02F
inventional
Yasushi
Suzuki