JPS55127485A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS55127485A JPS55127485A JP3333179A JP3333179A JPS55127485A JP S55127485 A JPS55127485 A JP S55127485A JP 3333179 A JP3333179 A JP 3333179A JP 3333179 A JP3333179 A JP 3333179A JP S55127485 A JPS55127485 A JP S55127485A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- dye
- display device
- crystal display
- polygenetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
PURPOSE: To highten contrast and thereby to improve stability to light, by incorporating in the liquid crystal material layer of a liquid crystal display device, a polygenetic dye comprising a mixed system consisting of a pluraity of anthraquinone dyes of different colors and a specific azo group-containing dye.
CONSTITUTION: In a liquid crystal display device having a liquid crystal material layer containing a polygenetic dye, as said polygenetic dye, use is made of a combination of a dye having azo groups as the chromophores and an absorption maximum in a wavelength region of 340W550nm and amixed system consisting of at least two anthraquinone dyes of different colors represented by formulas I and II, wherein X, Y and Z are each R, OR, Cl, NHR or NR2; R is H, alkyl or phenyl, and having an absorption maximum in the wavelength region of 550W740nm. Thereby, a liquid crystal display device which posseses required display performance for a long time is obtained, and black display, which is not obtained by the use of only one dye, is made possible.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54033331A JPS6045677B2 (en) | 1979-03-23 | 1979-03-23 | liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54033331A JPS6045677B2 (en) | 1979-03-23 | 1979-03-23 | liquid crystal display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55127485A true JPS55127485A (en) | 1980-10-02 |
JPS6045677B2 JPS6045677B2 (en) | 1985-10-11 |
Family
ID=12383568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54033331A Expired JPS6045677B2 (en) | 1979-03-23 | 1979-03-23 | liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6045677B2 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4308164A (en) * | 1980-08-04 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal composition made therewith |
US4308163A (en) * | 1980-08-04 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal composition made therewith |
US4308162A (en) * | 1980-12-08 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal compositions made therewith |
US4308161A (en) * | 1980-08-04 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal compositions made therewith |
WO1982002209A1 (en) * | 1980-12-22 | 1982-07-08 | Gen Electric | Liquid crystal compositions with novel tris-azo dichroic dyes |
US4356102A (en) * | 1980-10-22 | 1982-10-26 | General Electric Company | Dichroic liquid crystal compositions containing anthraquinone-based dyes |
JPS5829875A (en) * | 1981-07-27 | 1983-02-22 | Nec Corp | Liquid crystal composition and liquid crystal color display element |
JPS5880371A (en) * | 1981-11-09 | 1983-05-14 | Nec Corp | Liquid crystal composition and liquid crystal color display element |
JPS58109578A (en) * | 1981-12-24 | 1983-06-29 | Alps Electric Co Ltd | Color liquid crystal display element |
JPS58111882A (en) * | 1981-12-25 | 1983-07-04 | Alps Electric Co Ltd | Color liquid crystal display device |
US4405211A (en) * | 1980-07-29 | 1983-09-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Liquid crystal compositions with pleochroic anthraquinone dyes |
US4408840A (en) * | 1980-09-22 | 1983-10-11 | Hitachi, Ltd. | Liquid crystal compositions containing pleochroic anthraquinone dyes, liquid crystal devices containing the compositions, and the dyes |
US4477368A (en) * | 1981-10-01 | 1984-10-16 | Alps Electric Co., Ltd. | Color display liquid crystal composition |
US4478739A (en) * | 1982-07-16 | 1984-10-23 | Asulab S.A. | Dark colored composition based on liquid crystals |
US4483593A (en) * | 1981-03-20 | 1984-11-20 | Hitachi, Ltd. | Guest-host type liquid crystal composition and liquid crystal display device |
US4491532A (en) * | 1980-09-30 | 1985-01-01 | Siemens Aktiengesellschaft | Liquid-crystal mixture with a pleochroic anthraquinone dye, and method for producing such a dye |
US4530572A (en) * | 1982-12-30 | 1985-07-23 | Minnesota Mining And Manufacturing Company | Substituted anthraquinone-type isotropic dyes for liquid crystal display devices |
US4550980A (en) * | 1981-12-04 | 1985-11-05 | Epson Corporation | Liquid crystal composition and display element including same |
US4624532A (en) * | 1980-10-22 | 1986-11-25 | General Electric Company | Dichroic liquid crystal compositions containing anthraquinone-based dyes |
US4702561A (en) * | 1977-04-11 | 1987-10-27 | Minnesota Mining And Manufacturing Company | Pleochroic dyes and electro-optical displays therewith |
US4935160A (en) * | 1983-03-02 | 1990-06-19 | Merck Patent Gessellschaft Mit Beschrankter Haftung | Liquid-crystal guest-host systems |
US10131858B2 (en) | 2014-09-30 | 2018-11-20 | Kobe Steel, Ltd. | Method for manufacturing ashless coal |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0336591Y2 (en) * | 1985-05-27 | 1991-08-02 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5056386A (en) * | 1973-09-19 | 1975-05-17 | ||
JPS5073887A (en) * | 1973-10-31 | 1975-06-18 |
-
1979
- 1979-03-23 JP JP54033331A patent/JPS6045677B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5056386A (en) * | 1973-09-19 | 1975-05-17 | ||
JPS5073887A (en) * | 1973-10-31 | 1975-06-18 |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4702561A (en) * | 1977-04-11 | 1987-10-27 | Minnesota Mining And Manufacturing Company | Pleochroic dyes and electro-optical displays therewith |
US4405211A (en) * | 1980-07-29 | 1983-09-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Liquid crystal compositions with pleochroic anthraquinone dyes |
US4308163A (en) * | 1980-08-04 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal composition made therewith |
US4308161A (en) * | 1980-08-04 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal compositions made therewith |
US4308164A (en) * | 1980-08-04 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal composition made therewith |
US4408840A (en) * | 1980-09-22 | 1983-10-11 | Hitachi, Ltd. | Liquid crystal compositions containing pleochroic anthraquinone dyes, liquid crystal devices containing the compositions, and the dyes |
US4491532A (en) * | 1980-09-30 | 1985-01-01 | Siemens Aktiengesellschaft | Liquid-crystal mixture with a pleochroic anthraquinone dye, and method for producing such a dye |
US4356102A (en) * | 1980-10-22 | 1982-10-26 | General Electric Company | Dichroic liquid crystal compositions containing anthraquinone-based dyes |
US4624532A (en) * | 1980-10-22 | 1986-11-25 | General Electric Company | Dichroic liquid crystal compositions containing anthraquinone-based dyes |
WO1982002054A1 (en) * | 1980-12-08 | 1982-06-24 | Gen Electric | Novel yellow azo dyes and dichroic liquid crystal compositions made therefrom |
US4308162A (en) * | 1980-12-08 | 1981-12-29 | General Electric Company | Novel yellow azo dyes and dichroic liquid crystal compositions made therewith |
US4359398A (en) * | 1980-12-22 | 1982-11-16 | General Electric Company | Liquid crystal compositions with novel tris-azo dichroic dyes |
WO1982002209A1 (en) * | 1980-12-22 | 1982-07-08 | Gen Electric | Liquid crystal compositions with novel tris-azo dichroic dyes |
US4483593A (en) * | 1981-03-20 | 1984-11-20 | Hitachi, Ltd. | Guest-host type liquid crystal composition and liquid crystal display device |
JPS5829875A (en) * | 1981-07-27 | 1983-02-22 | Nec Corp | Liquid crystal composition and liquid crystal color display element |
US4477368A (en) * | 1981-10-01 | 1984-10-16 | Alps Electric Co., Ltd. | Color display liquid crystal composition |
JPS5880371A (en) * | 1981-11-09 | 1983-05-14 | Nec Corp | Liquid crystal composition and liquid crystal color display element |
US4550980A (en) * | 1981-12-04 | 1985-11-05 | Epson Corporation | Liquid crystal composition and display element including same |
JPS58109578A (en) * | 1981-12-24 | 1983-06-29 | Alps Electric Co Ltd | Color liquid crystal display element |
JPS58111882A (en) * | 1981-12-25 | 1983-07-04 | Alps Electric Co Ltd | Color liquid crystal display device |
US4478739A (en) * | 1982-07-16 | 1984-10-23 | Asulab S.A. | Dark colored composition based on liquid crystals |
US4530572A (en) * | 1982-12-30 | 1985-07-23 | Minnesota Mining And Manufacturing Company | Substituted anthraquinone-type isotropic dyes for liquid crystal display devices |
US4935160A (en) * | 1983-03-02 | 1990-06-19 | Merck Patent Gessellschaft Mit Beschrankter Haftung | Liquid-crystal guest-host systems |
US10131858B2 (en) | 2014-09-30 | 2018-11-20 | Kobe Steel, Ltd. | Method for manufacturing ashless coal |
Also Published As
Publication number | Publication date |
---|---|
JPS6045677B2 (en) | 1985-10-11 |
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