作者: David Anthony Jackson , Peter Alan Gemmell
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摘要: A compound having ferroelectric liquid crystal properties of the formula: ##STR1## wherein is residue a material or compatible material; X O S; n 0 1; Y any inert group which does not cause melting point Formula I to exceed 200° C.; R1 selected from H, C1-4 -alkyl and halogen; R2 provided that are different. In suitable environment capable alignment in two metastable states therefore for use multiplex-addressed, devices, such as flat bed large area screens displays.