| 摘要 |
1471946 Liquid crystal compositions BUNKER RAMO CORP 14 June 1974 [29 Aug 1973] 26531/74 Heading C4X [Also in Division G2] A composition for use in an electro-optic display device (see Divisions H3-H5) comprises an organic fluorescent or phosphorescent material, such as fluorscein, rhodamine, anthracene or phenanthrene, mixed with a nematic liquid crystal material of negative dielectric anisotropy, such as p-methoxybenzylidene-p-nbutylaniline (MBBA), its ethoxy homologue EBBA, or a mixture of the two. A particular composition comprises 1 ml. MBBA, 0À1 gm. sodium fluorescein, and 0À1 ml acetone for mixing purposes.
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