NL7604954A - Display cell with memory effect - contains bipyridine salt or polymer in mixt. of water and inert organic solvent acting as antifreeze (NL 14.11.77) - Google Patents

Display cell with memory effect - contains bipyridine salt or polymer in mixt. of water and inert organic solvent acting as antifreeze (NL 14.11.77)

Info

Publication number
NL7604954A
NL7604954A NL7604954A NL7604954A NL7604954A NL 7604954 A NL7604954 A NL 7604954A NL 7604954 A NL7604954 A NL 7604954A NL 7604954 A NL7604954 A NL 7604954A NL 7604954 A NL7604954 A NL 7604954A
Authority
NL
Netherlands
Prior art keywords
mixt
antifreeze
polymer
organic solvent
water
Prior art date
Application number
NL7604954A
Other languages
Dutch (nl)
Other versions
NL183253B (en
NL183253C (en
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NLAANVRAGE7604954,A priority Critical patent/NL183253C/en
Priority to US05/736,485 priority patent/US4116535A/en
Priority to DE2718910A priority patent/DE2718910C2/en
Priority to CA277,649A priority patent/CA1099091A/en
Priority to GB19067/77A priority patent/GB1564266A/en
Priority to AU24962/77A priority patent/AU512745B2/en
Priority to FR7714211A priority patent/FR2351463A1/en
Priority to JP5272277A priority patent/JPS52135884A/en
Publication of NL7604954A publication Critical patent/NL7604954A/en
Publication of NL183253B publication Critical patent/NL183253B/en
Application granted granted Critical
Publication of NL183253C publication Critical patent/NL183253C/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/1503—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect caused by oxidation-reduction reactions in organic liquid solutions, e.g. viologen solutions

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Pyridine Compounds (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

Display cell with memory effect has a housing, with a transparent wall section, contg. a reversibly reducible redox cpd. (I) dissolved in an electrochemically inert liq. (II) in contact with >=2 electrodes. (II) is a mixt. of water and an inert organic solvent (IIa) and (Ie is a 4,4'-bipyridine cpd. of formula (Ia) or a bipyridine cpd. of formula (Ib)(where R1 and R2 are 4-8C alkyl; R3 and R4 are 1-4C alkyl or benzyl; X- is ClO4', NO3', H2PO4' or BF4'; Y- is ClO4', BF4', H2PO '4 or PF6') or a bipyridien polymer (Ic), obtd. by reacting 4,4'-bipyridyl and alpha, omega-dibromobutane in a polar aprotic solvent and then replacing the Br ion by a ClO'4, H2PO4 degrees or BF4' ion, Solvent (IIa) acts as antifreeze.
NLAANVRAGE7604954,A 1976-05-10 1976-05-10 IMAGE DISPLAY CELL WITH MEMORY OPERATION. NL183253C (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NLAANVRAGE7604954,A NL183253C (en) 1976-05-10 1976-05-10 IMAGE DISPLAY CELL WITH MEMORY OPERATION.
US05/736,485 US4116535A (en) 1976-05-10 1976-10-28 Picture display cell with memory effect
DE2718910A DE2718910C2 (en) 1976-05-10 1977-04-28 Image display cell with memory effect
CA277,649A CA1099091A (en) 1976-05-10 1977-05-04 Picture display cell with memory effect
GB19067/77A GB1564266A (en) 1976-05-10 1977-05-06 Picture display cell with memory effect
AU24962/77A AU512745B2 (en) 1976-05-10 1977-05-06 Redox display
FR7714211A FR2351463A1 (en) 1976-05-10 1977-05-10 MEMORY EFFECT IMAGE REPRODUCING CELL
JP5272277A JPS52135884A (en) 1976-05-10 1977-05-10 Image display cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7604954,A NL183253C (en) 1976-05-10 1976-05-10 IMAGE DISPLAY CELL WITH MEMORY OPERATION.

Publications (3)

Publication Number Publication Date
NL7604954A true NL7604954A (en) 1977-11-14
NL183253B NL183253B (en) 1988-04-05
NL183253C NL183253C (en) 1988-09-01

Family

ID=19826158

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7604954,A NL183253C (en) 1976-05-10 1976-05-10 IMAGE DISPLAY CELL WITH MEMORY OPERATION.

Country Status (1)

Country Link
NL (1) NL183253C (en)

Also Published As

Publication number Publication date
NL183253B (en) 1988-04-05
NL183253C (en) 1988-09-01

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Legal Events

Date Code Title Description
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee