Title:
【発明の名称】液晶ディスプレイ及びこれに使用する蛍光染料
Document Type and Number:
Japanese Patent JPS63503073
Kind Code:
A
Abstract:
PCT No. PCT/GB87/00196 Sec. 371 Date Dec. 10, 1987 Sec. 102(e) Date Dec. 10, 1987 PCT Filed Mar. 20, 1987 PCT Pub. No. WO87/05617 PCT Pub. Date Sep. 24, 1987.Pleochroic fluorescent dyes of the general formula I: (I) in which R is hydrogen or an aliphatic hydrocarbon radical containing not more than 20 carbon atoms and -CH2- between carbon atoms or adjacent to the bicyclo[2.2]octane residue may be replaced by -O- may be dissolved in liquid crystal host material to form displays which are caused to fluoresce by incident low-energy ultraviolet initially absorbed by the liquid cyrstal host material and then internally transferred to the fluorophor. These dyes have greater stability to ultraviolet than other perylenedicarboxylic diesters while possessing good fluorescent properties and satisfactory order parameters. In formula I, R is preferably a straight or branched alkyl, and/or cycloalkyl group having 3 to 10 carbon atoms, preferably 5 to 7 carbon atoms. The liquid cyrstal host material preferably contains an energy-transfer agent such as a 4-substituted 4''-cyanoterphenyl. The 4-pentyl- and 4-propyl- bicyclo[2.2.2]oct-1-yl perylenedicarboxylates of Formula I and solutions of these dyes in nematic liquid crystal host "E7" (a mixture based on cyanobiphenyls containing 8% 4-pentyl-4''-cyanoterphenyl) are described in examples.
Inventors:
Ban Yuuk, Robert Leopold
O'Connor, Ingred Martina
Mosley, Alan
Frances
Bratskburn, Christopher
Griffith, Jiyoung
O'Connor, Ingred Martina
Mosley, Alan
Frances
Bratskburn, Christopher
Griffith, Jiyoung
Application Number:
JP50194387A
Publication Date:
November 10, 1988
Filing Date:
March 20, 1987
Export Citation:
Assignee:
The General Electric Company, P.L.C.
International Classes:
C09B3/14; C09B3/18; C09K19/60; G02F1/13; G02F1/137; (IPC1-7): C09B3/14; C09K19/60; G02F1/137
Attorney, Agent or Firm:
Nobuyuki Iida