IT8420639A1 - "Dispositivo per illuminare indicatori passivi a cristalli liquidi" - Google Patents

"Dispositivo per illuminare indicatori passivi a cristalli liquidi"

Info

Publication number
IT8420639A1
IT8420639A1 IT1984A20639A IT2063984A IT8420639A1 IT 8420639 A1 IT8420639 A1 IT 8420639A1 IT 1984A20639 A IT1984A20639 A IT 1984A20639A IT 2063984 A IT2063984 A IT 2063984A IT 8420639 A1 IT8420639 A1 IT 8420639A1
Authority
IT
Italy
Prior art keywords
liquid crystal
crystal indicators
passive liquid
illuminating
illuminating passive
Prior art date
Application number
IT1984A20639A
Other languages
English (en)
Other versions
IT8420639A0 (it
IT1178470B (it
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of IT8420639A0 publication Critical patent/IT8420639A0/it
Publication of IT8420639A1 publication Critical patent/IT8420639A1/it
Application granted granted Critical
Publication of IT1178470B publication Critical patent/IT1178470B/it

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
    • G02F1/13336—Combining plural substrates to produce large-area displays, e.g. tiled displays
    • 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
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0018—Redirecting means on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/227—Electroluminescent displays for vehicles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
IT20639/84A 1983-04-22 1984-04-20 Dispositivo per illuminare indicatori passivi a cristalli liquidi IT1178470B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833314631 DE3314631A1 (de) 1983-04-22 1983-04-22 Vorrichtung zur ausleuchtung passiver fluessigkristallanzeigen

Publications (3)

Publication Number Publication Date
IT8420639A0 IT8420639A0 (it) 1984-04-20
IT8420639A1 true IT8420639A1 (it) 1985-10-20
IT1178470B IT1178470B (it) 1987-09-09

Family

ID=6197087

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20639/84A IT1178470B (it) 1983-04-22 1984-04-20 Dispositivo per illuminare indicatori passivi a cristalli liquidi

Country Status (6)

Country Link
US (1) US4599816A (it)
EP (1) EP0139655B1 (it)
JP (1) JPS60501181A (it)
DE (2) DE3314631A1 (it)
IT (1) IT1178470B (it)
WO (1) WO1984004382A1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29624232U1 (de) * 1996-04-24 2001-04-19 Mannesmann Vdo Ag Beleuchtung für eine Anzeige
US6004001A (en) * 1996-09-12 1999-12-21 Vdo Adolf Schindling Ag Illumination for a display
JP2002221711A (ja) * 2000-11-22 2002-08-09 Seiko Epson Corp 液晶表示装置及びこれを備えた電子機器
DE202005016373U1 (de) * 2004-11-09 2005-12-29 Element Displays Dr. Wiemer Gmbh Flüssigkristall-Anzeigevorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858632A (en) * 1955-06-27 1958-11-04 Gen Motors Corp Panel illumination
US3038271A (en) * 1959-07-22 1962-06-12 United States Radium Corp Self-luminous signs
US3182415A (en) * 1962-11-09 1965-05-11 Lockheed Aircraft Corp Electroluminescent display panels
US3978599A (en) * 1974-12-27 1976-09-07 Thomson-Leeds, Company, Inc. Illuminated display device
DE3030064A1 (de) * 1980-08-08 1982-03-11 Vdo Adolf Schindling Ag, 6000 Frankfurt Passive elektrooptische anzeigevorrichtung
DE3102626A1 (de) * 1981-01-27 1982-08-19 Siemens AG, 1000 Berlin und 8000 München "passive elektrooptische anzeigevorrichtung"
WO1982002973A1 (en) * 1981-02-03 1982-09-02 Horikiri Kenji Liquid crystal display unit
US4502761A (en) * 1981-03-13 1985-03-05 Robert Bosch Gmbh Gradient-free illumination of passive readout display devices

Also Published As

Publication number Publication date
JPS60501181A (ja) 1985-07-25
DE3370991D1 (en) 1987-05-21
EP0139655A1 (de) 1985-05-08
IT8420639A0 (it) 1984-04-20
WO1984004382A1 (en) 1984-11-08
EP0139655B1 (de) 1987-04-15
IT1178470B (it) 1987-09-09
DE3314631A1 (de) 1984-10-25
US4599816A (en) 1986-07-15

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