Electro-optical display element

Details Electro-optical display element Electro-optical display element

G - Physics

02

F

31/105, 345/59

G02F 1/13 (2006.01) C09B 1/28 (2006.01) C09K 19/60 (2006.01)

Patent

CA 1040411

ABSTRACT OF THE DISCLOSURE An electro-optical element comprising a nematic liquid crystal composition and at least one compound represented by the formula: Image or Image wherein R is an alkyl radical having from 4 to 20 carbon atoms. Said compound is a pleochroic dye having a special function which differs from hitherto known dyes in its inter- action with nametic liquid crystal molecules. The electro- optical element makes it possible to obtain a liquid crystal display device which can exhibit the desired figure in colors differing from background colors.

209501

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