JPS5740585A - Electrochromic display element device - Google Patents
Electrochromic display element deviceInfo
- Publication number
- JPS5740585A JPS5740585A JP55116615A JP11661580A JPS5740585A JP S5740585 A JPS5740585 A JP S5740585A JP 55116615 A JP55116615 A JP 55116615A JP 11661580 A JP11661580 A JP 11661580A JP S5740585 A JPS5740585 A JP S5740585A
- Authority
- JP
- Japan
- Prior art keywords
- display element
- biphenylviologen
- oxidation
- reduction
- derivative
- 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
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: The titled display element capable of providing various kinds of bright color tones and prolonging lifetime in repeated display, having high reliability, obtained by utilizing the oxidation and reduction reactions of a biphenyl viologen derivative shown by a specific formula.
CONSTITUTION: The coloring and decoloring reactions of the oxidation and reduction of a biphenylviologen derivative shown by the formula I (R1 and R2 are H, halogen, 1W20C alkyl, nitro, cyano, alkoxy, e.g., methoxy, ethoxy, butoxy, etc., ester, e.g., aceotoxy, etc., acetyl; X- is monovalent anion, e.g., F-, Cl-, I-, CH3COO-, H2PO4, etc.) are utilized to give the desired display element. The N,N'- biphenylviologen compound derivative is synthesized by using 4,4'-bipyridine as a starting substance through the reaction processes shown by the formulae II and III.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55116615A JPS5740585A (en) | 1980-08-22 | 1980-08-22 | Electrochromic display element device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55116615A JPS5740585A (en) | 1980-08-22 | 1980-08-22 | Electrochromic display element device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5740585A true JPS5740585A (en) | 1982-03-06 |
Family
ID=14691561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55116615A Pending JPS5740585A (en) | 1980-08-22 | 1980-08-22 | Electrochromic display element device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5740585A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0196171A (en) * | 1987-10-09 | 1989-04-14 | Kootec Kk | Production of viologen derivative |
JPH0196170A (en) * | 1987-10-09 | 1989-04-14 | Kootec Kk | Viologen derivative |
JPH0198690A (en) * | 1987-10-09 | 1989-04-17 | Kootec Kk | Photochromic material |
-
1980
- 1980-08-22 JP JP55116615A patent/JPS5740585A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0196171A (en) * | 1987-10-09 | 1989-04-14 | Kootec Kk | Production of viologen derivative |
JPH0196170A (en) * | 1987-10-09 | 1989-04-14 | Kootec Kk | Viologen derivative |
JPH0198690A (en) * | 1987-10-09 | 1989-04-17 | Kootec Kk | Photochromic material |
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