ATE660T1 - DISPLAY DEVICE WITH A LIQUID CRYSTAL CELL AND METHOD OF OPERATING SUCH DISPLAY DEVICE. - Google Patents

DISPLAY DEVICE WITH A LIQUID CRYSTAL CELL AND METHOD OF OPERATING SUCH DISPLAY DEVICE.

Info

Publication number
ATE660T1
ATE660T1 AT79102834T AT79102834T ATE660T1 AT E660 T1 ATE660 T1 AT E660T1 AT 79102834 T AT79102834 T AT 79102834T AT 79102834 T AT79102834 T AT 79102834T AT E660 T1 ATE660 T1 AT E660T1
Authority
AT
Austria
Prior art keywords
display device
light
liquid crystal
crystal cell
plate
Prior art date
Application number
AT79102834T
Other languages
German (de)
Inventor
Guenther Dr. Dipl.-Phys. Baur
Hans Dipl.-Phys. Krueger
Fritz Windscheid
Volker Dr. Dipl.-Phys. Wittwer
Original Assignee
Siemens Aktiengesellschaft Berlin Und Muenchen
Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.
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 Siemens Aktiengesellschaft Berlin Und Muenchen, Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. filed Critical Siemens Aktiengesellschaft Berlin Und Muenchen
Application granted granted Critical
Publication of ATE660T1 publication Critical patent/ATE660T1/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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell

Landscapes

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

Abstract

An indicating device having an electro-optical light valve unit such as in a liquid crystal cell arranged behind a plate containing fluorescent particles characterized by a contrast filter disposed behind the plate and unit in the direction of viewing and a reflector disposed behind the contrast filter. The contrast filter will pass light of the spectrum which excites the fluorescent particles of the fluorescent plate but absorbs the emitted fluorescent light and a majority of the other light so that a background is either dark or of a specific color. The energized light valves cause a bright image on the dark or colored background.
AT79102834T 1978-08-11 1979-08-06 DISPLAY DEVICE WITH A LIQUID CRYSTAL CELL AND METHOD OF OPERATING SUCH DISPLAY DEVICE. ATE660T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782835347 DE2835347A1 (en) 1978-08-11 1978-08-11 DISPLAY DEVICE WITH AN ELECTROOPTIC LIGHT VALVE
EP79102834A EP0008400B1 (en) 1978-08-11 1979-08-06 Display device comprising a liquid crystal cell and method of operating such a display device

Publications (1)

Publication Number Publication Date
ATE660T1 true ATE660T1 (en) 1982-02-15

Family

ID=6046856

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79102834T ATE660T1 (en) 1978-08-11 1979-08-06 DISPLAY DEVICE WITH A LIQUID CRYSTAL CELL AND METHOD OF OPERATING SUCH DISPLAY DEVICE.

Country Status (5)

Country Link
US (1) US4264147A (en)
EP (1) EP0008400B1 (en)
JP (1) JPS55126215A (en)
AT (1) ATE660T1 (en)
DE (1) DE2835347A1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910952A1 (en) * 1979-03-20 1980-12-11 Siemens Ag DEVICE FOR IMPROVING THE VISIBILITY OF PASSIVE DISPLAYS
DE2911087A1 (en) * 1979-03-21 1980-09-25 Siemens Ag PRESENTATION METHOD AND DISPLAY DEVICE FOR CARRYING OUT THIS METHOD
JPS56135886A (en) * 1980-03-26 1981-10-23 Sharp Kk Reflecting type fluorescent liquid crystal indicator
DE3017551C2 (en) * 1980-05-08 1982-08-26 Vdo Adolf Schindling Ag, 6000 Frankfurt Passive electro-optical display element
US4810063A (en) * 1981-09-16 1989-03-07 Manchester R & D Partnership Enhanced scattering voltage sensitive encapsulated liquid crystal with light directing and interference layer features
IT1147855B (en) * 1982-04-21 1986-11-26 Panerai Off Srl BRIGHT SIGNALING PLATE PARTICULARLY SUITABLE FOR INSTALLATION ON THE BRIDGE OF NAVAL UNITS
JPS5931519A (en) * 1982-08-13 1984-02-20 キヤノン株式会社 keyboard switch
JPS59133527A (en) * 1983-01-21 1984-07-31 Hitachi Ltd Liquid crystal display device
US4856876A (en) * 1983-03-30 1989-08-15 Manchester R & D Partnership Fluorescent colored encapsulated liquid crystal apparatus using enhanced scattering
US4732456A (en) * 1984-08-28 1988-03-22 Taliq Corporation Scattering display for contrast enhancement including target
US4832458A (en) * 1984-08-28 1989-05-23 Talig Corporation Display for contrast enhancement
US4726662A (en) * 1985-09-24 1988-02-23 Talig Corporation Display including a prismatic lens system or a prismatic reflective system
US4721366A (en) * 1985-10-07 1988-01-26 Rca Corporation Illumination of a liquid crystal display
US4822145A (en) * 1986-05-14 1989-04-18 Massachusetts Institute Of Technology Method and apparatus utilizing waveguide and polarized light for display of dynamic images
US4882617A (en) * 1986-12-24 1989-11-21 U.S. Philips Corporation Projection device and associated electro-optic monochrome display device with phosphor layer and interference filters
US4822144A (en) * 1986-12-24 1989-04-18 U.S. Philips Corporation Electro-optic color display including luminescent layer and interference filter
US5076668A (en) * 1988-01-25 1991-12-31 Taliq Corporation Gain reflector-liquid crystal display
US4991940A (en) * 1988-01-25 1991-02-12 Taliq Corporation Gain reflector-liquid crystal display
US5018837A (en) * 1989-07-03 1991-05-28 Motorola, Inc. Enhanced contrast liquid crystal display device
US5155777A (en) * 1991-06-26 1992-10-13 International Business Machines Corporation Scattered light blocking layer for optoelectronic receivers
US5629784A (en) * 1994-04-12 1997-05-13 Ois Optical Imaging Systems, Inc. Liquid crystal display with holographic diffuser and prism sheet on viewer side
US5502626A (en) * 1994-06-17 1996-03-26 Honeywell Inc. High efficiency fluorescent lamp device
US5579134A (en) * 1994-11-30 1996-11-26 Honeywell Inc. Prismatic refracting optical array for liquid flat panel crystal display backlight
US5737045A (en) * 1995-09-22 1998-04-07 Ois Optical Imaging Systems, Inc. LCD with notch filter
US6628246B1 (en) * 1997-11-29 2003-09-30 Koninklijke Philips Electronics N.V. Display device comprising a light guide
TW575778B (en) * 2000-09-28 2004-02-11 Koninkl Philips Electronics Nv Light-switching device
US20050117109A1 (en) * 2001-12-10 2005-06-02 Johannes Marra Display panel comprising a light guide
DE602004014000D1 (en) * 2003-09-19 2008-07-03 Tpo Hong Kong Holding Ltd TRANSVERSIVE DISPLAY WITH IMPROVED CONTRAST
IL176673A0 (en) * 2006-07-03 2007-07-04 Fermon Israel A variably displayable mobile device keyboard

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221441A1 (en) * 1972-05-02 1973-11-15 Bernt Von Grabe OPTOELECTRONIC SIGN GENERATOR
DD120724A1 (en) * 1975-06-12 1976-06-20
DE2640909C2 (en) * 1976-09-10 1987-05-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Display device with a radiation collector and condenser
AT351615B (en) * 1975-12-03 1979-08-10 Siemens Ag ARRANGEMENT FOR PASSIVE BRIGHTNESS GAIN OF ONE- OR MULTICOLOR DISPLAY DEVICES
DE2554226C3 (en) * 1975-12-03 1985-07-11 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Radiation collector and compressor in the form of a fluorescent plastic plate
DE2616669C2 (en) * 1976-04-15 1986-10-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Radiation collector and compressor in the form of a fluorescent plastic plate and display device herewith
DE2619352C2 (en) * 1976-04-30 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Liquid crystal display device comprising a plate made of fluorescent material
DE2619368A1 (en) * 1976-04-30 1977-11-17 Siemens Ag Alphanumeric liq. crystal display - includes fluorescent plate having light apertures each with dielectric reflector
DE2706375C3 (en) * 1977-02-15 1982-08-26 Siemens AG, 1000 Berlin und 8000 München Display arrangement with a light valve device, in particular a liquid crystal cell
DE2759339C3 (en) * 1977-02-15 1980-08-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Arrangement with a light valve
US4113360A (en) * 1977-03-28 1978-09-12 Siemens Aktiengesellschaft Indicating device for illustrating symbols of all kinds
DE2808440C3 (en) * 1978-02-27 1982-07-08 Siemens AG, 1000 Berlin und 8000 München Display device with a light valve controlled in a time division multiplex process

Also Published As

Publication number Publication date
DE2835347A1 (en) 1980-02-28
EP0008400A1 (en) 1980-03-05
US4264147A (en) 1981-04-28
EP0008400B1 (en) 1982-02-03
JPS55126215A (en) 1980-09-29

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee