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CH619590GA3 - Liquid-crystal display device of the guest-host effect type and use of this liquid-crystal display device - Google Patents

Liquid-crystal display device of the guest-host effect type and use of this liquid-crystal display device Download PDF

Info

Publication number
CH619590GA3
CH619590GA3 CH112477A CH112477A CH619590GA3 CH 619590G A3 CH619590G A3 CH 619590GA3 CH 112477 A CH112477 A CH 112477A CH 112477 A CH112477 A CH 112477A CH 619590G A3 CH619590G A3 CH 619590GA3
Authority
CH
Switzerland
Prior art keywords
crystal display
guest
liquid
display device
host liquid
Prior art date
Application number
CH112477A
Other versions
CH619590B (en
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
Publication of CH619590B publication Critical patent/CH619590B/en
Application filed filed Critical
Priority to CH112477A priority Critical patent/CH619590GA3/en
Priority to DE19772707671 priority patent/DE2707671A1/en
Priority to FR7720177A priority patent/FR2379127A1/en
Priority to JP14870277A priority patent/JPS5396863A/en
Priority to GB3393/78A priority patent/GB1595842A/en
Priority to NL7801018A priority patent/NL7801018A/en
Publication of CH619590GA3 publication Critical patent/CH619590GA3/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 
    • G02F1/13—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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Electric Clocks (AREA)
  • Liquid Crystal Substances (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

An electronic clock with a guest-host liquid-crystal display is described. The specified drive electronics subject the guest-host liquid-crystal display to frequencies in excess of 32 Hz, preferably about 1 Hz. As a result, the power consumption of the guest-host liquid-crystal display is reduced to such an extent that there is no need for the previously used complex twisted nematic cell. Apart from the price advantage, the elimination of the previously necessary polarisers allows the proposed guest-host liquid-crystal cell to have a greater viewing angle for the display. <IMAGE>
CH112477A 1977-01-31 1977-01-31 Liquid-crystal display device of the guest-host effect type and use of this liquid-crystal display device CH619590GA3 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH112477A CH619590GA3 (en) 1977-01-31 1977-01-31 Liquid-crystal display device of the guest-host effect type and use of this liquid-crystal display device
DE19772707671 DE2707671A1 (en) 1977-01-31 1977-02-23 LIQUID CRYSTAL DISPLAY DEVICE FOR THE TYPE GUEST-HOST EFFECT AND USE OF THIS LIQUID CRYSTAL DISPLAY DEVICE
FR7720177A FR2379127A1 (en) 1977-01-31 1977-06-30 Donor-acceptor-type liquid crystal display device and application of this device
JP14870277A JPS5396863A (en) 1977-01-31 1977-12-09 Guestthost lc display
GB3393/78A GB1595842A (en) 1977-01-31 1978-01-27 Guest-host liquid crystal display device system and its application
NL7801018A NL7801018A (en) 1977-01-31 1978-01-27 DISPLAY DEVICE WITH A LIQUID CRYSTAL OF THE GUEST-HOST TYPE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH112477A CH619590GA3 (en) 1977-01-31 1977-01-31 Liquid-crystal display device of the guest-host effect type and use of this liquid-crystal display device

Publications (2)

Publication Number Publication Date
CH619590B CH619590B (en)
CH619590GA3 true CH619590GA3 (en) 1980-10-15

Family

ID=4203046

Family Applications (1)

Application Number Title Priority Date Filing Date
CH112477A CH619590GA3 (en) 1977-01-31 1977-01-31 Liquid-crystal display device of the guest-host effect type and use of this liquid-crystal display device

Country Status (6)

Country Link
JP (1) JPS5396863A (en)
CH (1) CH619590GA3 (en)
DE (1) DE2707671A1 (en)
FR (1) FR2379127A1 (en)
GB (1) GB1595842A (en)
NL (1) NL7801018A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386350A (en) * 1979-06-26 1983-05-31 Nippon Electric Co., Ltd. Display apparatus
CH687909A5 (en) * 1991-12-31 1997-03-27 Xelux Holding Ag Method for operating an anti-glare device.
CH687809A5 (en) * 1993-05-14 1997-02-28 Xelux Holding Ag Anti-glare device.

Also Published As

Publication number Publication date
NL7801018A (en) 1978-08-02
JPS5396863A (en) 1978-08-24
GB1595842A (en) 1981-08-19
FR2379127A1 (en) 1978-08-25
CH619590B (en)
DE2707671A1 (en) 1978-08-03

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Legal Events

Date Code Title Description
PLX Patent declared invalid from date of grant onwards