JPS57198777A - Composition for liquid crystal display - Google Patents
Composition for liquid crystal displayInfo
- Publication number
- JPS57198777A JPS57198777A JP8245281A JP8245281A JPS57198777A JP S57198777 A JPS57198777 A JP S57198777A JP 8245281 A JP8245281 A JP 8245281A JP 8245281 A JP8245281 A JP 8245281A JP S57198777 A JPS57198777 A JP S57198777A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- composition
- alk
- cyano
- halogen
- 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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To provide a composition for a liquid crystal color display, having excellent light resistance, and exhibiting clear reddish violet color and extremely good dichroism, by dissolving a dichroic dye composed of an anthraquinone compound having a specific structural formula in a liquid crystal.
CONSTITUTION: The objective composition is obtained by dissolving (A) a dichroic dye composed of an anthraquinone compound of formula (R1 is amino or OH; R2 and R3 are H, amino, OH, nitro, etc.; Alk is halogen, cyano, phenyl, etc.; R4 is H, halogen, 1W4C alkyl, or Alk; x is halogen or 1W4C alkyl; m is 1 or 2; n is 0, 1 or 2; m+n≥2) (preferably the compound wherein R1 is amino, R2, R3 and R4 are H, and Alk is alkyl) in (B) a liquid crystal (e.g. a nematic liquid crystal composed of a mixture of 43% 4-cyano-4'-n-pentylbipheyl, 17% 4-cyano-4'-n-propoxybiphenyl, etc.). The concentration of the dye in the liquid crystal is preferably 0.01W5%.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8245281A JPS57198777A (en) | 1981-06-01 | 1981-06-01 | Composition for liquid crystal display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8245281A JPS57198777A (en) | 1981-06-01 | 1981-06-01 | Composition for liquid crystal display |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57198777A true JPS57198777A (en) | 1982-12-06 |
JPS641000B2 JPS641000B2 (en) | 1989-01-10 |
Family
ID=13774904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8245281A Granted JPS57198777A (en) | 1981-06-01 | 1981-06-01 | Composition for liquid crystal display |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57198777A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4585574A (en) * | 1980-12-12 | 1986-04-29 | Bayer Aktiengesellschaft | Anthraquinone dyestuffs, processes for their preparation, their use, and liquid-crystalline materials containing anthraquinone dyestuffs |
US4689171A (en) * | 1982-05-03 | 1987-08-25 | Bayer Aktiengesellschaft | Anthraquinone dyestuffs, their preparation and use and dichroic material containing these anthraquinone dyestuffs |
US4883611A (en) * | 1987-09-16 | 1989-11-28 | Mitsui Toatsu Chemicals, Incorporated | Dichroic coloring agents for liquid crystal displays |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55123673A (en) * | 1979-03-16 | 1980-09-24 | Mitsui Toatsu Chem Inc | Liquid crystal color display device |
-
1981
- 1981-06-01 JP JP8245281A patent/JPS57198777A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55123673A (en) * | 1979-03-16 | 1980-09-24 | Mitsui Toatsu Chem Inc | Liquid crystal color display device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4585574A (en) * | 1980-12-12 | 1986-04-29 | Bayer Aktiengesellschaft | Anthraquinone dyestuffs, processes for their preparation, their use, and liquid-crystalline materials containing anthraquinone dyestuffs |
US4689171A (en) * | 1982-05-03 | 1987-08-25 | Bayer Aktiengesellschaft | Anthraquinone dyestuffs, their preparation and use and dichroic material containing these anthraquinone dyestuffs |
US4883611A (en) * | 1987-09-16 | 1989-11-28 | Mitsui Toatsu Chemicals, Incorporated | Dichroic coloring agents for liquid crystal displays |
Also Published As
Publication number | Publication date |
---|---|
JPS641000B2 (en) | 1989-01-10 |
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