Composition for liquid crystal color display

摘要

PCT No. PCT/JP81/00258 Sec. 371 Date May 21, 1982 Sec. 102(e) Date May 21, 1982 PCT Filed Sep. 30, 1981 PCT Pub. No. WO82/01191 PCT Pub. Date Apr. 15, 1982.As dichroic dyes for use in a liquid color display device, compounds of formula (I) (I) such as 4'-octylphenyl perylene-3,9-dicarboxylate are provided. These compounds have various characteristic properties. For example, (1) they have a sufficient coloring ability in small amounts; (2) they have a high dichroic ratio and show a high contrast by application and non-application of voltage; (3) they have sufficient compatibility with liquid crystals; (4) they have excellent durability, are stable, and do not reduce the performance of a display device even in long-term use.