JPS5740584A - Electrochromic display material - Google Patents

Electrochromic display material

Info

Publication number
JPS5740584A
JPS5740584A JP55116614A JP11661480A JPS5740584A JP S5740584 A JPS5740584 A JP S5740584A JP 55116614 A JP55116614 A JP 55116614A JP 11661480 A JP11661480 A JP 11661480A JP S5740584 A JPS5740584 A JP S5740584A
Authority
JP
Japan
Prior art keywords
anion
phosphoric ester
phosphonic acid
organic substituted
display material
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
Application number
JP55116614A
Other languages
Japanese (ja)
Other versions
JPS6334914B2 (en
Inventor
Kenji Nomura
Satoru Isoda
Tatsuo Masumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55116614A priority Critical patent/JPS5740584A/en
Publication of JPS5740584A publication Critical patent/JPS5740584A/en
Publication of JPS6334914B2 publication Critical patent/JPS6334914B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

PURPOSE: The titled display material for prolonging lifetime both in repeated display and memory display, obtained by utilizing the oxidation and reduction reactions of a viologen compound derivative shown by a specific formula, having an organic substituted phosphoric ester, etc. anion as a counter ion.
CONSTITUTION: The coloring and decoloring reactions caused by the oxidation and reduction of a viologen compound shown by the formula [R1 and R2 are alkyl, aryl, aralkyl; X1 - is phosphoric ester anion of (R3-O)2P(=O)O-, R4-P(=O)ONaO-, phosphonic acid anion of (R5)2P(=O)O-; X2 2- is phosphoric ester anion of R6- OP(=O)O2 2-, phosphonic acid anion of R7-P(=O)O2 2-; R3-R7 are alkyl, aryl, aralkyl], having an organic substituted phosphoric ester anion or organic substituted phosphonic acid anion as a counter ion, are utilized to give the desired display material.
EFFECT: Since this material is not crystallized in a coloring state, it is decolored easily after memory action.
COPYRIGHT: (C)1982,JPO&Japio
JP55116614A 1980-08-22 1980-08-22 Electrochromic display material Granted JPS5740584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55116614A JPS5740584A (en) 1980-08-22 1980-08-22 Electrochromic display material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55116614A JPS5740584A (en) 1980-08-22 1980-08-22 Electrochromic display material

Publications (2)

Publication Number Publication Date
JPS5740584A true JPS5740584A (en) 1982-03-06
JPS6334914B2 JPS6334914B2 (en) 1988-07-12

Family

ID=14691533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55116614A Granted JPS5740584A (en) 1980-08-22 1980-08-22 Electrochromic display material

Country Status (1)

Country Link
JP (1) JPS5740584A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0196170A (en) * 1987-10-09 1989-04-14 Kootec Kk Viologen derivative
JP2006181337A (en) * 2004-11-30 2006-07-13 Itoki Corp System for partitioning space into semi-private room and medical/nursing facilities equipped with the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0196170A (en) * 1987-10-09 1989-04-14 Kootec Kk Viologen derivative
JP2006181337A (en) * 2004-11-30 2006-07-13 Itoki Corp System for partitioning space into semi-private room and medical/nursing facilities equipped with the same

Also Published As

Publication number Publication date
JPS6334914B2 (en) 1988-07-12

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