JPS57198778A - Liquid crystal color display element - Google Patents
Liquid crystal color display elementInfo
- Publication number
- JPS57198778A JPS57198778A JP8388481A JP8388481A JPS57198778A JP S57198778 A JPS57198778 A JP S57198778A JP 8388481 A JP8388481 A JP 8388481A JP 8388481 A JP8388481 A JP 8388481A JP S57198778 A JPS57198778 A JP S57198778A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- liquid crystal
- display element
- dichroic dye
- alkoxyalkyl
- 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.)
- Pending
Links
Abstract
PURPOSE: To obtain the titled display element having good color density, dichroism, and light resistance, by sealing a liquid crystal containing a specific anthraquinone dichroic dye in a cell formed by placng a pair of transparent electrode base plates parallelly and oppositely with each other.
CONSTITUTION: The objective display element is obtained by sealing a liquid crystal containing the anthraquinone dichroic dye of formula[R is group of formula II (R1 is H, methyl or phenyl; n is 0W2), formula III (R2 is 1W12C alkyl, alkoxyalkyl or group of formula II) or formula IV (R3 is 1W12C alkyl or alkoxyalkyl)]in a cell obtained by placing a pair of transparent electrode base plates parallelly and oppositely with each other interposing a circumferential sealing material therebetween. The anthraquinone dichroic dye can be prepared by the exchange reaction of the compound of formula V in dimethyl sulfoxide in the presence of potassium hydroxide at 100W150°C.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8388481A JPS57198778A (en) | 1981-06-02 | 1981-06-02 | Liquid crystal color display element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8388481A JPS57198778A (en) | 1981-06-02 | 1981-06-02 | Liquid crystal color display element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57198778A true JPS57198778A (en) | 1982-12-06 |
Family
ID=13815080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8388481A Pending JPS57198778A (en) | 1981-06-02 | 1981-06-02 | Liquid crystal color display element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57198778A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883611A (en) * | 1987-09-16 | 1989-11-28 | Mitsui Toatsu Chemicals, Incorporated | Dichroic coloring agents for liquid crystal displays |
-
1981
- 1981-06-02 JP JP8388481A patent/JPS57198778A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883611A (en) * | 1987-09-16 | 1989-11-28 | Mitsui Toatsu Chemicals, Incorporated | Dichroic coloring agents for liquid crystal displays |
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