JPS5499787A - Electrically coloring display element - Google Patents

Electrically coloring display element

Info

Publication number
JPS5499787A
JPS5499787A JP611378A JP611378A JPS5499787A JP S5499787 A JPS5499787 A JP S5499787A JP 611378 A JP611378 A JP 611378A JP 611378 A JP611378 A JP 611378A JP S5499787 A JPS5499787 A JP S5499787A
Authority
JP
Japan
Prior art keywords
soln
display
elongated
charging
enhanced
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
Application number
JP611378A
Other languages
Japanese (ja)
Inventor
Shinya Tomura
Hirohisa Kato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP611378A priority Critical patent/JPS5499787A/en
Publication of JPS5499787A publication Critical patent/JPS5499787A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

PURPOSE: To provide the title element obtd. by charging a soln. of a viologen derivative in carbonic acid ester solvent between transparent and opposite electrodes on transparent substrates. The life of the element is elongated and the contrast ratio is enhanced as compared to an element using conventional solvent.
CONSTITUTION: An electrically coloring display cell is constituted by placing glass substrate 1a provided with tin oxide film display electrode 2a formed along a display pattern and glass substrate 1b provided with tin oxide film opposite electrode 2b face to face with spacers 3 in-between. 0.1 mol of N,N'-diheptyl-4,4'-bipyridinium dibromide is dissolved in 20 ml of a carbonic acid ester such as ethylene carbonate, and 50 wt% of titanium oxide is added to the resulting viologen derivative soln. to prepare a chromic soln. DC voltage is applied between the electrodes of an electrically coloring display element constituted by charging the soln. into the cell to allow the cathode surface to assume a brilliant blue color. The life of the element is elongated and the display contrast is enhanced as compared to an element using conventional solvent such as water or acetonitrile.
COPYRIGHT: (C)1979,JPO&Japio
JP611378A 1978-01-25 1978-01-25 Electrically coloring display element Pending JPS5499787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP611378A JPS5499787A (en) 1978-01-25 1978-01-25 Electrically coloring display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP611378A JPS5499787A (en) 1978-01-25 1978-01-25 Electrically coloring display element

Publications (1)

Publication Number Publication Date
JPS5499787A true JPS5499787A (en) 1979-08-06

Family

ID=11629439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP611378A Pending JPS5499787A (en) 1978-01-25 1978-01-25 Electrically coloring display element

Country Status (1)

Country Link
JP (1) JPS5499787A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519930A (en) * 1982-01-11 1985-05-28 Kabushiki Kaisha Daini Seikosha Electrochromic display device
EP0725305A2 (en) † 1986-03-31 1996-08-07 Gentex Corporation A variable reflectance mirror for an automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519930A (en) * 1982-01-11 1985-05-28 Kabushiki Kaisha Daini Seikosha Electrochromic display device
EP0725305A2 (en) † 1986-03-31 1996-08-07 Gentex Corporation A variable reflectance mirror for an automobile
EP0725305B2 (en) † 1986-03-31 2004-08-18 Gentex Corporation A variable reflectance mirror for an automobile

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