FR2294501A1 - Control device for liquid crystal display systems - threshold voltage is applied to liquid crystal layer (NL150676) - Google Patents

Control device for liquid crystal display systems - threshold voltage is applied to liquid crystal layer (NL150676)

Info

Publication number
FR2294501A1
FR2294501A1 FR7537855A FR7537855A FR2294501A1 FR 2294501 A1 FR2294501 A1 FR 2294501A1 FR 7537855 A FR7537855 A FR 7537855A FR 7537855 A FR7537855 A FR 7537855A FR 2294501 A1 FR2294501 A1 FR 2294501A1
Authority
FR
France
Prior art keywords
liquid crystal
electrodes
control device
crystal layer
threshold voltage
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.)
Withdrawn
Application number
FR7537855A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 GB53685/74A external-priority patent/GB1502280A/en
Application filed by Individual filed Critical Individual
Publication of FR2294501A1 publication Critical patent/FR2294501A1/en
Withdrawn legal-status Critical Current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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13725—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on guest-host interaction
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The liquid crystal layer is placed between two transparent plates with electrodes forming a number of crosspoints, so that the display unit can be controlled like a matrix by consecutive application of voltages to the electrodes. In order to excite the liquid crystal, a counter-voltage is applied to the areas to be excited. In order to stop the excitation, zero voltage is applied to the required areas. One glass plate (2) carries three transparent band shaped electrodes (4, 5, 6) which form columns or X electrodes. The other glass plate has similar electrodes (7, 8, 9) which form lines or Y electrodes.
FR7537855A 1974-12-11 1975-12-10 Control device for liquid crystal display systems - threshold voltage is applied to liquid crystal layer (NL150676) Withdrawn FR2294501A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB53685/74A GB1502280A (en) 1974-12-11 1974-12-11 Liquid crystal displays
GB944175 1975-03-06

Publications (1)

Publication Number Publication Date
FR2294501A1 true FR2294501A1 (en) 1976-07-09

Family

ID=26242942

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537855A Withdrawn FR2294501A1 (en) 1974-12-11 1975-12-10 Control device for liquid crystal display systems - threshold voltage is applied to liquid crystal layer (NL150676)

Country Status (5)

Country Link
JP (1) JPS5177196A (en)
CH (1) CH585944A5 (en)
DE (1) DE2555593A1 (en)
FR (1) FR2294501A1 (en)
NL (1) NL7514476A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084603A1 (en) * 1982-01-25 1983-08-03 American Cyanamid Company Multiplexing driving method and system for an electrochromic display

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666881A (en) * 1970-12-28 1972-05-30 Richard J Stein Electro-optical display device employing liquid crystals
GB1372720A (en) * 1971-10-30 1974-11-06 Secr Defence Methods of inhibition in co-ordinate addressed liquid-crystal display matrices
US3895373A (en) * 1974-06-07 1975-07-15 Ibm Method and apparatus for selectively exciting a matrix of voltage responsive devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666881A (en) * 1970-12-28 1972-05-30 Richard J Stein Electro-optical display device employing liquid crystals
GB1372720A (en) * 1971-10-30 1974-11-06 Secr Defence Methods of inhibition in co-ordinate addressed liquid-crystal display matrices
US3895373A (en) * 1974-06-07 1975-07-15 Ibm Method and apparatus for selectively exciting a matrix of voltage responsive devices

Also Published As

Publication number Publication date
CH585944A5 (en) 1977-03-15
JPS5177196A (en) 1976-07-03
NL7514476A (en) 1976-06-15
DE2555593A1 (en) 1976-06-16

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse