JPS5798581A - Composition for liquid crystal color display - Google Patents
Composition for liquid crystal color displayInfo
- Publication number
- JPS5798581A JPS5798581A JP16706981A JP16706981A JPS5798581A JP S5798581 A JPS5798581 A JP S5798581A JP 16706981 A JP16706981 A JP 16706981A JP 16706981 A JP16706981 A JP 16706981A JP S5798581 A JPS5798581 A JP S5798581A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- composition
- dye
- type
- application
- 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 provide the titled composition having a high dichroism ratio and showing high contrast by voltage application non-application, by dissolving a specific anthraquinone dye in a nematic liquid crystal with positive dielectric anisotropy.
CONSTITUTION: 1-5,Dihydroxy-4,8-dinitroanthraquinone and an alkoxybenzene are reacted at a low temp and the reaction product is reduce to obtain an anthraquinon dye shown by the formula (wherein R is alkyl). Subsequently, to a nematic liquid crystal with positive dielectric anisotropy such as a cyano-biphenyl type, a cyclohexane type or the like, the aforementioned anthraquinone dye is added in an amount of 0.01W5wt% and dissolved therein.
EFFECT: Said dye shows sufficient compatibility with the liquid crystal, has sufficient coloring capacity in a small amount, is excellent in durability and stability, does not damage an apparatus even if used for a long period of time and used in a display apparatus of a type wherein, when said composition is charged therein, a blue color of an electrode part is extinguished by application of an electric field.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16706981A JPS6046152B2 (en) | 1981-10-21 | 1981-10-21 | Composition for liquid crystal color display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16706981A JPS6046152B2 (en) | 1981-10-21 | 1981-10-21 | Composition for liquid crystal color display |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3005779A Division JPS55123673A (en) | 1979-03-16 | 1979-03-16 | Liquid crystal color display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5798581A true JPS5798581A (en) | 1982-06-18 |
JPS6046152B2 JPS6046152B2 (en) | 1985-10-14 |
Family
ID=15842824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16706981A Expired JPS6046152B2 (en) | 1981-10-21 | 1981-10-21 | Composition for liquid crystal color display |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6046152B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59172547A (en) * | 1983-03-23 | 1984-09-29 | Hitachi Ltd | Anthraquinone dye and liquid crystal composition |
-
1981
- 1981-10-21 JP JP16706981A patent/JPS6046152B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59172547A (en) * | 1983-03-23 | 1984-09-29 | Hitachi Ltd | Anthraquinone dye and liquid crystal composition |
JPH049187B2 (en) * | 1983-03-23 | 1992-02-19 |
Also Published As
Publication number | Publication date |
---|---|
JPS6046152B2 (en) | 1985-10-14 |
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