GB1507832A - Voltage sensitive display apparatus - Google Patents

Voltage sensitive display apparatus

Info

Publication number
GB1507832A
GB1507832A GB53820/74A GB5382074A GB1507832A GB 1507832 A GB1507832 A GB 1507832A GB 53820/74 A GB53820/74 A GB 53820/74A GB 5382074 A GB5382074 A GB 5382074A GB 1507832 A GB1507832 A GB 1507832A
Authority
GB
United Kingdom
Prior art keywords
electrode
voltage
electrodes
particles
display
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.)
Expired
Application number
GB53820/74A
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB53820/74A priority Critical patent/GB1507832A/en
Publication of GB1507832A publication Critical patent/GB1507832A/en
Expired legal-status Critical Current

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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/40—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect
    • G01R13/404—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for discontinuous display, i.e. display of discrete values

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

1507832 Indicating apparatus; measuring voltage PLESSEY CO Ltd 24 Nov 1975 [12 Dec 1974] 53820/74 Heading G1J and G1U [Also in Division G5] A bar-type analogue display apparatus comprises a layer of electro-phoretic suspension medium 6 between two electrodes 11, 12, the medium comprising dielectric particles suspended in a non- conducting liquid such that its optical characteristics are changed when the particles are caused to migrate to or away from one electrode 11 by a potential difference between the electrodes, one electrode 12 having a substantial resistance so that a potential gradient can be established along it, and the other electrode 11 having a low resistance so that a uniform voltage Vc can be applied over its whole length, such that when the uniform voltage Vc is between the voltage limits of the potential gradient, particles migrate to the electrode 11 on one side 15 of a line A at which Vc equals the local voltage of the electrode 12, and to the electrode 12 on the other side of the line A, the position of the boundary line A indicating the magnitude of voltage Vc. The electrodes 11, 12 are supported on electrically insulating walls 9, 10 at least one of the electrodes and its supporting wall being transparent. The particles may be white, and the liquid a blue dye solution. The electrode 12 may be formed to give a linear, logarithmic, or other potential gradient. The display may be used to indicate the relative magnitudes of two parameters represented by V and Vc, or, if a standard voltage V is applied to electrode 12, the display represents the absolute value of a parameter represented by Vc. The display is applicable to thermometers, liquid level indicators, fuel gauges, pressure gauges, ammeters, speedometers, etc.
GB53820/74A 1975-11-24 1975-11-24 Voltage sensitive display apparatus Expired GB1507832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB53820/74A GB1507832A (en) 1975-11-24 1975-11-24 Voltage sensitive display apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53820/74A GB1507832A (en) 1975-11-24 1975-11-24 Voltage sensitive display apparatus

Publications (1)

Publication Number Publication Date
GB1507832A true GB1507832A (en) 1978-04-19

Family

ID=10469085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53820/74A Expired GB1507832A (en) 1975-11-24 1975-11-24 Voltage sensitive display apparatus

Country Status (1)

Country Link
GB (1) GB1507832A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005121886A1 (en) * 2004-06-08 2005-12-22 Canon Kabushiki Kaisha Electrophoretic display apparatus and driving method thereof
EP2455718A1 (en) * 2010-11-18 2012-05-23 Saia-Burgess Controls AG Energy meter employing electronic-ink based display
WO2013096790A1 (en) * 2011-12-22 2013-06-27 Rosemount, Inc. Two-wire process variable indicator with microencapsulated electrophoretic display

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005121886A1 (en) * 2004-06-08 2005-12-22 Canon Kabushiki Kaisha Electrophoretic display apparatus and driving method thereof
US8144116B2 (en) 2004-06-08 2012-03-27 Canon Kabushiki Kaisha Electrophoretic display apparatus and driving method thereof
EP2455718A1 (en) * 2010-11-18 2012-05-23 Saia-Burgess Controls AG Energy meter employing electronic-ink based display
WO2013096790A1 (en) * 2011-12-22 2013-06-27 Rosemount, Inc. Two-wire process variable indicator with microencapsulated electrophoretic display
US9429462B2 (en) 2011-12-22 2016-08-30 Rosemount Inc. Two-wire process variable indicator with microencapsulated electrophoretic display

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee