CA2173336A1 - Light source for backlighting - Google Patents
Light source for backlightingInfo
- Publication number
- CA2173336A1 CA2173336A1 CA002173336A CA2173336A CA2173336A1 CA 2173336 A1 CA2173336 A1 CA 2173336A1 CA 002173336 A CA002173336 A CA 002173336A CA 2173336 A CA2173336 A CA 2173336A CA 2173336 A1 CA2173336 A1 CA 2173336A1
- Authority
- CA
- Canada
- Prior art keywords
- light source
- backlighting
- aperture
- light
- display
- 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.)
- Granted
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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02F1/133504—Diffusing, scattering, diffracting elements
- G02F1/133507—Films for enhancing the luminance
-
- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
Abstract
A light source for backlighting a display comprises a light-emitting device such as an incandescent bulb (12) or LED array disposed within a cavity having diffusely reflecting walls and an aperture. A diffuser (20) and brightness enhancing film (22) are situated at the opening of the aperture between the aperture and the display to be backlit. A color filter (24) may also be employed to whiten the light emerging from the light source.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/131,659 | 1993-10-05 | ||
US08/131,659 US5440197A (en) | 1993-10-05 | 1993-10-05 | Backlighting apparatus for uniformly illuminating a display panel |
US08/317,209 | 1994-10-03 | ||
US08/317,209 US5684354A (en) | 1993-10-05 | 1994-10-03 | Backlighting apparatus for uniformly illuminating a display panel |
PCT/US1994/011264 WO1995010066A1 (en) | 1993-10-05 | 1994-10-04 | Light source for backlighting |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2173336A1 true CA2173336A1 (en) | 1995-04-13 |
CA2173336C CA2173336C (en) | 2005-08-16 |
Family
ID=26829698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002173336A Expired - Fee Related CA2173336C (en) | 1993-10-05 | 1994-10-04 | Light source for backlighting |
Country Status (6)
Country | Link |
---|---|
US (1) | US5892325A (en) |
EP (1) | EP0722576B1 (en) |
CN (1) | CN1051379C (en) |
AT (1) | ATE203836T1 (en) |
CA (1) | CA2173336C (en) |
DE (1) | DE69427864T2 (en) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6486862B1 (en) | 1996-10-31 | 2002-11-26 | Kopin Corporation | Card reader display system |
US6545654B2 (en) | 1996-10-31 | 2003-04-08 | Kopin Corporation | Microdisplay for portable communication systems |
US6552704B2 (en) | 1997-10-31 | 2003-04-22 | Kopin Corporation | Color display with thin gap liquid crystal |
US6909419B2 (en) * | 1997-10-31 | 2005-06-21 | Kopin Corporation | Portable microdisplay system |
US6490104B1 (en) | 2000-09-15 | 2002-12-03 | Three-Five Systems, Inc. | Illumination system for a micro display |
US6542307B2 (en) | 2000-10-20 | 2003-04-01 | Three-Five Systems, Inc. | Compact near-eye illumination system |
US6563648B2 (en) | 2000-10-20 | 2003-05-13 | Three-Five Systems, Inc. | Compact wide field of view imaging system |
US6967697B2 (en) | 2000-12-15 | 2005-11-22 | Kopin Corporation | Display housing with a display alignment device |
US7253852B2 (en) | 2001-04-25 | 2007-08-07 | Kopin Corporation | Polarizer removal in a microdisplay system |
EP2312380B1 (en) | 2001-02-27 | 2020-11-18 | Dolby Laboratories Licensing Corporation | A method and device for displaying an image |
US8684584B2 (en) * | 2001-05-16 | 2014-04-01 | Benzion Inditsky | Ultra-thin backlight |
US7064740B2 (en) * | 2001-11-09 | 2006-06-20 | Sharp Laboratories Of America, Inc. | Backlit display with improved dynamic range |
US8687271B2 (en) | 2002-03-13 | 2014-04-01 | Dolby Laboratories Licensing Corporation | N-modulation displays and related methods |
ES2675880T3 (en) | 2002-03-13 | 2018-07-13 | Dolby Laboratories Licensing Corporation | Failure compensation of light emitting element on a monitor |
US7021801B2 (en) * | 2002-09-19 | 2006-04-04 | Everbrite, Llc | High-intensity directional light |
CN100442121C (en) * | 2003-06-27 | 2008-12-10 | 奇美电子股份有限公司 | Lighting arrangement |
US7164284B2 (en) * | 2003-12-18 | 2007-01-16 | Sharp Laboratories Of America, Inc. | Dynamic gamma for a liquid crystal display |
US20050248553A1 (en) * | 2004-05-04 | 2005-11-10 | Sharp Laboratories Of America, Inc. | Adaptive flicker and motion blur control |
US8395577B2 (en) * | 2004-05-04 | 2013-03-12 | Sharp Laboratories Of America, Inc. | Liquid crystal display with illumination control |
US7532192B2 (en) * | 2004-05-04 | 2009-05-12 | Sharp Laboratories Of America, Inc. | Liquid crystal display with filtered black point |
US7602369B2 (en) * | 2004-05-04 | 2009-10-13 | Sharp Laboratories Of America, Inc. | Liquid crystal display with colored backlight |
US7777714B2 (en) * | 2004-05-04 | 2010-08-17 | Sharp Laboratories Of America, Inc. | Liquid crystal display with adaptive width |
US7872631B2 (en) * | 2004-05-04 | 2011-01-18 | Sharp Laboratories Of America, Inc. | Liquid crystal display with temporal black point |
US7612757B2 (en) * | 2004-05-04 | 2009-11-03 | Sharp Laboratories Of America, Inc. | Liquid crystal display with modulated black point |
US7505018B2 (en) * | 2004-05-04 | 2009-03-17 | Sharp Laboratories Of America, Inc. | Liquid crystal display with reduced black level insertion |
US7023451B2 (en) * | 2004-06-14 | 2006-04-04 | Sharp Laboratories Of America, Inc. | System for reducing crosstalk |
US7556836B2 (en) * | 2004-09-03 | 2009-07-07 | Solae, Llc | High protein snack product |
US7898519B2 (en) * | 2005-02-17 | 2011-03-01 | Sharp Laboratories Of America, Inc. | Method for overdriving a backlit display |
US7525528B2 (en) * | 2004-11-16 | 2009-04-28 | Sharp Laboratories Of America, Inc. | Technique that preserves specular highlights |
US8050511B2 (en) * | 2004-11-16 | 2011-11-01 | Sharp Laboratories Of America, Inc. | High dynamic range images from low dynamic range images |
US8050512B2 (en) | 2004-11-16 | 2011-11-01 | Sharp Laboratories Of America, Inc. | High dynamic range images from low dynamic range images |
KR100647317B1 (en) | 2005-02-03 | 2006-11-23 | 삼성전자주식회사 | Optical system for multi-channel fluorescence measurement of microfluidic chip and multi-channel fluorescence sample analyzer |
EP1696260B1 (en) * | 2005-02-08 | 2013-09-25 | BMG Gesellschaft für moderne Informationssysteme mbH | Liquid crystal display and liquid crystal display system comprising a plurality of such liquid crystal displays |
EP1877696A1 (en) * | 2005-03-12 | 2008-01-16 | 3M Innovative Properties Company | Illumination device and methods for making the same |
CN100464233C (en) * | 2006-01-17 | 2009-02-25 | 群康科技(深圳)有限公司 | Backlight module |
US8121401B2 (en) * | 2006-01-24 | 2012-02-21 | Sharp Labortories of America, Inc. | Method for reducing enhancement of artifacts and noise in image color enhancement |
US9143657B2 (en) * | 2006-01-24 | 2015-09-22 | Sharp Laboratories Of America, Inc. | Color enhancement technique using skin color detection |
EP2013919A2 (en) | 2006-05-02 | 2009-01-14 | Superbulbs, Inc. | Method of light dispersion and preferential scattering of certain wavelengths of light for light-emitting diodes and bulbs constructed therefrom |
BRPI0711150A2 (en) | 2006-05-02 | 2011-08-23 | Superbulbs Inc | plastic led bulb |
US8547002B2 (en) | 2006-05-02 | 2013-10-01 | Switch Bulb Company, Inc. | Heat removal design for LED bulbs |
CN100437153C (en) * | 2006-05-25 | 2008-11-26 | 友达光电股份有限公司 | Backlight module and diffusion module therefor |
US8941580B2 (en) * | 2006-11-30 | 2015-01-27 | Sharp Laboratories Of America, Inc. | Liquid crystal display with area adaptive backlight |
JP5002656B2 (en) * | 2007-02-01 | 2012-08-15 | ドルビー ラボラトリーズ ライセンシング コーポレイション | Calibration of displays with spatially varying backlights |
US7874704B2 (en) * | 2007-05-21 | 2011-01-25 | Waqidi Falicoff | LED luminance-augmentation via specular retroreflection, including collimators that escape the étendue limit |
US8412010B2 (en) | 2007-09-10 | 2013-04-02 | Banyan Energy, Inc. | Compact optics for concentration and illumination systems |
CA2698284C (en) * | 2007-09-10 | 2013-06-25 | Banyan Energy, Inc. | Compact optics for concentration, aggregation and illumination of light energy |
US7672549B2 (en) * | 2007-09-10 | 2010-03-02 | Banyan Energy, Inc. | Solar energy concentrator |
US8439528B2 (en) | 2007-10-03 | 2013-05-14 | Switch Bulb Company, Inc. | Glass LED light bulbs |
KR20100110770A (en) * | 2007-10-24 | 2010-10-13 | 슈퍼불브스, 인크. | Diffuser for led light sources |
US20090322800A1 (en) | 2008-06-25 | 2009-12-31 | Dolby Laboratories Licensing Corporation | Method and apparatus in various embodiments for hdr implementation in display devices |
US20100214282A1 (en) | 2009-02-24 | 2010-08-26 | Dolby Laboratories Licensing Corporation | Apparatus for providing light source modulation in dual modulator displays |
JP5944398B2 (en) | 2010-10-28 | 2016-07-05 | バニヤン エナジー インコーポレイテッド | Turning optics for heat collection and lighting systems |
US9013793B2 (en) * | 2011-09-21 | 2015-04-21 | Google Inc. | Lightweight eyepiece for head mounted display |
US8591069B2 (en) | 2011-09-21 | 2013-11-26 | Switch Bulb Company, Inc. | LED light bulb with controlled color distribution using quantum dots |
CN104765152B (en) | 2015-05-06 | 2017-10-24 | 京东方科技集团股份有限公司 | A kind of virtual reality glasses |
CN105652490B (en) | 2016-03-25 | 2020-03-24 | 京东方科技集团股份有限公司 | Display glasses and driving method thereof |
Family Cites Families (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1734834A (en) * | 1927-06-28 | 1929-11-05 | Willard M Steward | Light projector |
US2761056A (en) * | 1953-02-13 | 1956-08-28 | Lazo John | Instrument illuminating means |
US2907869A (en) * | 1957-08-14 | 1959-10-06 | Edwin M Hudson | Instrument illuminator |
US3223833A (en) * | 1964-12-15 | 1965-12-14 | Gen Time Corp | Illuminated dial |
US3349234A (en) * | 1965-06-01 | 1967-10-24 | Honeywell Inc | Illuminating apparatus |
US3586851A (en) * | 1969-02-24 | 1971-06-22 | Robert R Rudolph | Cool light |
JPS50123295A (en) * | 1974-03-15 | 1975-09-27 | ||
US3957351A (en) * | 1974-09-16 | 1976-05-18 | Rockwell International Corporation | Backlighted display apparatus |
US4043636A (en) * | 1974-12-23 | 1977-08-23 | Intel Corporation | Illumination-panel for liquid crystal display of similar device |
CH609193B5 (en) * | 1976-02-25 | 1979-08-31 | Ebauches Sa | Passive electro-optical display cell and method for its manufacture |
US4183628A (en) * | 1976-05-20 | 1980-01-15 | Ebauches S.A. | Electronic watch and display device for such watch |
US4195915A (en) * | 1978-05-05 | 1980-04-01 | Hughes Aircraft Company | Liquid crystal image projector system |
US4212048A (en) * | 1978-06-16 | 1980-07-08 | General Electric Company | Illuminator for reflective dichroic liquid crystal displays |
US4252416A (en) * | 1978-10-23 | 1981-02-24 | Societe Suisse Pour L'industrie Horlogere Management Services S.A. | Optical instrument for gathering and distribution of light |
USRE33987E (en) * | 1980-03-24 | 1992-07-07 | Seiko Epson Corporation | Backlighted liquid crystal display |
US4453200A (en) * | 1981-07-20 | 1984-06-05 | Rockwell International Corporation | Apparatus for lighting a passive display |
US4440474A (en) * | 1981-12-21 | 1984-04-03 | Rockwell International Corporation | Illuminated passive display from an oblique angle |
US4528617A (en) * | 1982-02-08 | 1985-07-09 | Sheltered Workshop For The Disabled, Inc. | Light distribution apparatus |
JPS59119436U (en) * | 1983-01-29 | 1984-08-11 | 旭光学工業株式会社 | Information display device inside camera viewfinder |
US4616295A (en) * | 1984-07-03 | 1986-10-07 | Hewlett-Packard Company | Apparatus for mounting and illuminating liquid crystal displays |
JPS6134583A (en) * | 1984-07-26 | 1986-02-18 | シャープ株式会社 | Lighting apparatus |
CA1243867A (en) * | 1984-10-12 | 1988-11-01 | National Research Council Of Canada | Viewing angle colour sensitive lighting accessory |
DE3605000A1 (en) * | 1985-02-22 | 1986-09-04 | Sharp Kk | LIGHTING DEVICE |
FR2582839B1 (en) * | 1985-06-04 | 1987-07-24 | Veglia | LIQUID CRYSTAL DISPLAY DEVICE |
JPS6217904A (en) * | 1985-07-15 | 1987-01-26 | 双葉電子工業株式会社 | Light source |
JP2823156B2 (en) * | 1985-07-23 | 1998-11-11 | キヤノン株式会社 | Display device |
US4720706A (en) * | 1985-08-26 | 1988-01-19 | Stine Edward V | Method and apparatus for electro-optical color imaging |
US5008658A (en) * | 1986-12-09 | 1991-04-16 | Zenith Electronics Corporation | Domed light housing for back-lit LCD display |
US4735495A (en) * | 1986-12-12 | 1988-04-05 | General Electric Co. | Light source for liquid crystal display panels utilizing internally reflecting light pipes and integrating sphere |
DE3806421A1 (en) * | 1987-03-04 | 1988-11-24 | Citizen Watch Co Ltd | LIGHTING DEVICE FOR A LIQUID CRYSTAL DISPLAY DEVICE |
JP2557071B2 (en) * | 1987-09-28 | 1996-11-27 | 三菱電機株式会社 | Liquid crystal display |
US4798448A (en) * | 1988-02-16 | 1989-01-17 | General Electric Company | High efficiency illumination system for display devices |
NL8800951A (en) * | 1988-04-13 | 1989-11-01 | Philips Nv | DISPLAY DEVICE. |
JPH0679120B2 (en) * | 1988-08-06 | 1994-10-05 | 三菱電機株式会社 | Surface emitting device |
JPH0262585A (en) * | 1988-08-29 | 1990-03-02 | Sharp Corp | Transmission type liquid crystal display device |
DE3919925A1 (en) * | 1989-06-19 | 1990-12-20 | Inotec Gmbh Ges Fuer Innovativ | ILLUMINATED, DISPLAY UNIT, PARTICULARLY HOUSE NUMBER, TRAFFIC SIGN, ADVERTISER |
JPH0365982A (en) * | 1989-08-03 | 1991-03-20 | Pioneer Electron Corp | Display board illuminating device for display device |
US5128783A (en) * | 1990-01-31 | 1992-07-07 | Ois Optical Imaging Systems, Inc. | Diffusing/collimating lens array for a liquid crystal display |
US5093765A (en) * | 1990-02-16 | 1992-03-03 | Tosoh Corporation | Back lighting device for a panel |
US5161041A (en) * | 1990-04-26 | 1992-11-03 | Ois Optical Imaging Systems, Inc. | Lighting assembly for a backlit electronic display including an integral image splitting and collimating means |
US5050946A (en) * | 1990-09-27 | 1991-09-24 | Compaq Computer Corporation | Faceted light pipe |
US5202950A (en) * | 1990-09-27 | 1993-04-13 | Compaq Computer Corporation | Backlighting system with faceted light pipes |
US5188453A (en) * | 1991-01-28 | 1993-02-23 | Holophane Company, Inc. | Internally illuminated sign |
US5169230A (en) * | 1991-06-20 | 1992-12-08 | The United States Of America As Represented By The Secretary Of The Air Force | Lamp for producing light intensity uniformity |
EP0531939B1 (en) * | 1991-09-09 | 1999-12-29 | Enplas Corporation | Surface light source device |
US5655832A (en) * | 1992-04-16 | 1997-08-12 | Tir Technologies, Inc. | Multiple wavelength light processor |
US5440197A (en) * | 1993-10-05 | 1995-08-08 | Tir Technologies, Inc. | Backlighting apparatus for uniformly illuminating a display panel |
GB2283849B (en) * | 1993-10-29 | 1997-07-02 | Protec Fire Detection Plc | Luminaire |
US5485291A (en) * | 1994-02-22 | 1996-01-16 | Precision Lamp, Inc. | Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source |
US5575549A (en) * | 1994-08-12 | 1996-11-19 | Enplas Corporation | Surface light source device |
US5650865A (en) * | 1995-03-21 | 1997-07-22 | Hughes Electronics | Holographic backlight for flat panel displays |
-
1994
- 1994-10-04 CN CN94193692A patent/CN1051379C/en not_active Expired - Lifetime
- 1994-10-04 AT AT94931796T patent/ATE203836T1/en not_active IP Right Cessation
- 1994-10-04 CA CA002173336A patent/CA2173336C/en not_active Expired - Fee Related
- 1994-10-04 DE DE69427864T patent/DE69427864T2/en not_active Expired - Lifetime
- 1994-10-04 EP EP94931796A patent/EP0722576B1/en not_active Expired - Lifetime
-
1997
- 1997-10-27 US US08/958,222 patent/US5892325A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2173336C (en) | 2005-08-16 |
EP0722576A4 (en) | 1998-05-06 |
US5892325A (en) | 1999-04-06 |
EP0722576A1 (en) | 1996-07-24 |
EP0722576B1 (en) | 2001-08-01 |
CN1132558A (en) | 1996-10-02 |
DE69427864D1 (en) | 2001-09-06 |
CN1051379C (en) | 2000-04-12 |
DE69427864T2 (en) | 2002-07-04 |
ATE203836T1 (en) | 2001-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2173336A1 (en) | Light source for backlighting | |
US6313892B2 (en) | Light source utilizing reflective cavity having sloped side surfaces | |
US5684354A (en) | Backlighting apparatus for uniformly illuminating a display panel | |
US5453855A (en) | Liquid crystal display device backlit by LED's coupled to printed circuit board | |
US6007209A (en) | Light source for backlighting | |
CA2137043A1 (en) | Backlit liquid crystal display with edge-mounted night lamp | |
US4649381A (en) | Liquid crystal panel display device | |
AU6202600A (en) | Lighting apparatus | |
KR960706281A (en) | HIGH EFFICIENCY UV BACKLIGHTING SYSTEM FOR REAR ILLUMINATION OF ELECTRONIC DISPLAY DEVICES | |
US20030012035A1 (en) | Programmable multi-color backlight for a liquid crystal display | |
TW373156B (en) | Displayer and lighting device | |
AU4553989A (en) | Electro-optical flat-design display device, in particular lcd area | |
CA2074021A1 (en) | Night vision backlighting system for liquid crystal displays | |
EP0399173A3 (en) | Color display device | |
CA2162236A1 (en) | Lighting Fixtures | |
ES2150706T3 (en) | TRUE COLOR LED MATRIX FLAT PANEL DISPLAY MODULE WITH ACTIVATION CIRCUITS. | |
EP0178848A3 (en) | A viewing angle colour sensitive lighting accessory | |
US5371656A (en) | Apparatus for displaying an illuminated image and method therefor | |
EP0351108A3 (en) | Display device | |
CA2153159A1 (en) | Backlighting for Liquid Crystal Display | |
CA2255578A1 (en) | Color display device | |
EP0295089A3 (en) | Light modifier and method for modifying light | |
CA1312729C (en) | Liquid crystal display apparatus | |
CA2362751A1 (en) | Flat lighting device | |
US4250645A (en) | Indicating device with flat fluorescent lamp |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20131004 |