JPS5584919A - Electrochromic display device - Google Patents

Electrochromic display device

Info

Publication number
JPS5584919A
JPS5584919A JP15972278A JP15972278A JPS5584919A JP S5584919 A JPS5584919 A JP S5584919A JP 15972278 A JP15972278 A JP 15972278A JP 15972278 A JP15972278 A JP 15972278A JP S5584919 A JPS5584919 A JP S5584919A
Authority
JP
Japan
Prior art keywords
ecd
display device
electrode
electrodes
electrolyte
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
JP15972278A
Other languages
Japanese (ja)
Inventor
Nobuyuki Yoshiike
Shigeo Kondo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15972278A priority Critical patent/JPS5584919A/en
Publication of JPS5584919A publication Critical patent/JPS5584919A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To achieve the longer life of the display device and enhance reliability by letting the iron compound insoluble in electrolyte as a reference electrode used for defining the potential of display electrodes.
CONSTITUTION: Iron compound which is insoluble in the electrolyte 8 of the electrochromic display device (ECD), such as Berlin acid iron or its derivative as a material for a reference electrode 5 as well as current collecting material (carbon powder, etc.), binder (polyethylene powder, etc.) and Pt wires (lead parts) are buried and thermo-molded to make the electrode 5. While a fixed square wave is being applied to the electrode 5 from an external circuit, current is flowed to the counter electrode 4, whereby the potentials of the display electrodes 2 of the ECD are well controlled and yet the deposition of the deposits on the electrodes 2 and the staining these are obviated. Hence, the ECD is made longer in life.
COPYRIGHT: (C)1980,JPO&Japio
JP15972278A 1978-12-20 1978-12-20 Electrochromic display device Pending JPS5584919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15972278A JPS5584919A (en) 1978-12-20 1978-12-20 Electrochromic display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15972278A JPS5584919A (en) 1978-12-20 1978-12-20 Electrochromic display device

Publications (1)

Publication Number Publication Date
JPS5584919A true JPS5584919A (en) 1980-06-26

Family

ID=15699842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15972278A Pending JPS5584919A (en) 1978-12-20 1978-12-20 Electrochromic display device

Country Status (1)

Country Link
JP (1) JPS5584919A (en)

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