GB1439028A - Display devices - Google Patents

Display devices

Info

Publication number
GB1439028A
GB1439028A GB3456273A GB3456273A GB1439028A GB 1439028 A GB1439028 A GB 1439028A GB 3456273 A GB3456273 A GB 3456273A GB 3456273 A GB3456273 A GB 3456273A GB 1439028 A GB1439028 A GB 1439028A
Authority
GB
United Kingdom
Prior art keywords
array
display
electrodes
resistors
transistors
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
GB3456273A
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
Priority claimed from JP7277872A external-priority patent/JPS5114877B2/ja
Priority claimed from JP7277972A external-priority patent/JPS5312333B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1439028A publication Critical patent/GB1439028A/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 
    • G02F1/15—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
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/18—Circuits for visual indication of the result

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

1439028 Alpha-numeric displays and circuits therefor MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 July 1973 [19 July 1972 (2)] 34562/73 Heading G5C Segment electrodes of a display device are connected to the junctions of switches Q 1 . . . Q 7 and resistors R 1 . . . R 7 and the common electrode to the junction of resistors R 1 , R 10 ; the arrangement allows the polarity of the applied voltage across the device to be reversed. An electrophoretic display panel comprises a figure of eight array of electrodes S 1 . . . S 7 and a common electrode C 9 . Another electrode(s), Fig. 1 (not shown), may surround all of the array electrodes. The operating circuit comprises transistors Q 1 . . . Q 7 , Q 9 and resistors R 9 , R 10 . When Q 9 is on, a potential of - E/2 is applied to C 1 and either O or- E to the array electrodes depending on the state of transistors Q 1 . . . Q 7 . A potential may be applied to S 8 to improve the contrast. The input circuitry to the transistors Q 1 . . . Q 7 may include inverters, Fig. 4 (not shown), whereby white figures on a black background or the converse can be obtained. A number of display panels can be combined and each transistor Q 1 . . . Q 7 connected to the corresponding array electrode in each panel and the transistor Q 9 of each panel energized sequentially. Means for erasing the display may be provided by applying the same potential to all array electrodes. Diodes are provided to reduce spurious displays and to increase the impedance of associated circuits thereby increasing the persistance of the display. The display device may comprise gas discharge or liquid crystal devices or L.E.D.s.
GB3456273A 1972-07-19 1973-07-19 Display devices Expired GB1439028A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7277872A JPS5114877B2 (en) 1972-07-19 1972-07-19
JP7277972A JPS5312333B2 (en) 1972-07-19 1972-07-19

Publications (1)

Publication Number Publication Date
GB1439028A true GB1439028A (en) 1976-06-09

Family

ID=26413911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3456273A Expired GB1439028A (en) 1972-07-19 1973-07-19 Display devices

Country Status (4)

Country Link
CA (1) CA1019856A (en)
DE (1) DE2337148C3 (en)
FR (1) FR2193227A1 (en)
GB (1) GB1439028A (en)

Also Published As

Publication number Publication date
CA1019856A (en) 1977-10-25
FR2193227A1 (en) 1974-02-15
DE2337148A1 (en) 1974-01-31
DE2337148B2 (en) 1977-11-10
DE2337148C3 (en) 1978-06-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920719