TW200508720A - Planar light source device, and display device with planar light source - Google Patents

Planar light source device, and display device with planar light source

Info

Publication number
TW200508720A
TW200508720A TW093123486A TW93123486A TW200508720A TW 200508720 A TW200508720 A TW 200508720A TW 093123486 A TW093123486 A TW 093123486A TW 93123486 A TW93123486 A TW 93123486A TW 200508720 A TW200508720 A TW 200508720A
Authority
TW
Taiwan
Prior art keywords
light source
light
planar light
plate
case
Prior art date
Application number
TW093123486A
Other languages
Chinese (zh)
Other versions
TWI260446B (en
Inventor
Seiji Sakai
Akihiro Mori
Toshiyuki Yoneda
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of TW200508720A publication Critical patent/TW200508720A/en
Application granted granted Critical
Publication of TWI260446B publication Critical patent/TWI260446B/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
    • 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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source

Abstract

This invention provides a planar light source device. It can automatically correct the variation in chromaticity and luminance of the illuminating ray for the changes in temperature or aging. A planar light source device comprises a case, a diffuse plate, a light source, a reflecting plate, and a controller. The case possesses an aperture. The diffuse plate is arranged at the aperture and diffuses the entered light. The light source is equipped in the case. The reflecting plate reflects the light from the light source toward the diffuse plate. The device has the characteristic that comprises a light sensor. The light sensor is arranged opposed to the diffusion plate. It detects the light from the diffusion plate. According to the detected value of the light sensor, the controller adjusts the amount of emitting light from the light source.
TW093123486A 2003-08-21 2004-08-05 Planar light source device, and display device with planar light source TWI260446B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003297460A JP4371733B2 (en) 2003-08-21 2003-08-21 Surface light source device

Publications (2)

Publication Number Publication Date
TW200508720A true TW200508720A (en) 2005-03-01
TWI260446B TWI260446B (en) 2006-08-21

Family

ID=34403307

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093123486A TWI260446B (en) 2003-08-21 2004-08-05 Planar light source device, and display device with planar light source

Country Status (3)

Country Link
JP (1) JP4371733B2 (en)
KR (1) KR100660238B1 (en)
TW (1) TWI260446B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105026993A (en) * 2013-02-25 2015-11-04 Eizo株式会社 Light sensor attachment structure of image display device
CN110017895A (en) * 2019-03-26 2019-07-16 广州市轩士佳电子科技有限公司 A kind of light source monitoring system

Families Citing this family (37)

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JP2006269293A (en) * 2005-03-24 2006-10-05 Fujinon Corp Lighting system and lighting method
JP4482473B2 (en) * 2005-03-25 2010-06-16 シャープ株式会社 Liquid crystal display
JP4823568B2 (en) 2005-05-23 2011-11-24 三菱電機株式会社 Planar light source device and display device using the same
JP4507989B2 (en) * 2005-06-07 2010-07-21 ソニー株式会社 Support, backlight device, and liquid crystal display device
JP4822502B2 (en) * 2005-08-12 2011-11-24 シチズン電子株式会社 Backlight
JP3872810B1 (en) * 2005-08-12 2007-01-24 シャープ株式会社 Light source control device, illumination device, and liquid crystal display device
US7230222B2 (en) * 2005-08-15 2007-06-12 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Calibrated LED light module
WO2007069382A1 (en) * 2005-12-12 2007-06-21 Sharp Kabushiki Kaisha Light source device, display and television receiver
CN101352102B (en) * 2005-12-29 2012-06-27 夏普株式会社 Light source, display, and television receiver
KR100709362B1 (en) * 2006-01-20 2007-04-20 삼성전자주식회사 Display apparatus having light-sensor placing on optical sheet
JP2009087537A (en) * 2006-01-20 2009-04-23 Sharp Corp Light source unit, lighting device using it, and display device using it
JP2009087538A (en) * 2006-01-20 2009-04-23 Sharp Corp Light source unit, lighting device using it, and display device using it
JP2007240649A (en) 2006-03-06 2007-09-20 Sony Corp Optical display device
TWI342974B (en) * 2006-07-06 2011-06-01 Chimei Innolux Corp Liquid crystal display and backlight module thereof
KR100793581B1 (en) * 2006-08-29 2008-01-14 엘지이노텍 주식회사 Back light unit and display apparatus using its
JP4264558B2 (en) 2006-11-10 2009-05-20 ソニー株式会社 Backlight device, backlight driving method, and color image display device
US20100007600A1 (en) * 2006-12-13 2010-01-14 Koninklijke Philips Electronics N.V. Method for light emitting diode control and corresponding light sensor array, backlight and liquid crystal display
JP2008251230A (en) * 2007-03-29 2008-10-16 Harison Toshiba Lighting Corp Hollow type surface lighting device
KR20080093220A (en) * 2007-04-16 2008-10-21 엘지이노텍 주식회사 Light source device and display apparatus, light source control device and method thereof
JP2009014901A (en) * 2007-07-03 2009-01-22 Totoku Electric Co Ltd Liquid crystal display unit
KR100919461B1 (en) * 2007-07-09 2009-09-28 심현섭 Luminous source transformed color temperature for a lighting device
JP5093720B2 (en) * 2007-09-04 2012-12-12 Ｎｌｔテクノロジー株式会社 Backlight unit, display device
JP2009092724A (en) * 2007-10-04 2009-04-30 Mitsubishi Electric Corp Liquid crystal display device
JP5052298B2 (en) * 2007-11-16 2012-10-17 三菱電機株式会社 Planar light source device and display device
CN101939584B (en) * 2008-01-22 2012-02-29 夏普株式会社 Illuminating device, display device and television receiver
KR101532571B1 (en) * 2008-04-21 2015-07-09 삼성디스플레이 주식회사 Liquid crystal display device
JP2010085854A (en) * 2008-10-01 2010-04-15 Seiko Epson Corp Electrooptical apparatus, light detecting apparatus, and electronic device
JP5025682B2 (en) * 2009-05-08 2012-09-12 三菱電機株式会社 LED lighting device
JP4786750B2 (en) * 2010-03-12 2011-10-05 シャープ株式会社 Lighting device
JP5116865B2 (en) * 2011-07-13 2013-01-09 シャープ株式会社 Lighting device
US8568000B2 (en) * 2011-08-29 2013-10-29 Tai-Her Yang Annular-arranged lamp capable of backward projecting by concave sphere
EP2795380A1 (en) * 2011-12-22 2014-10-29 3M Innovative Properties Company Optical device with sensor and method of making and using same
CN205609112U (en) * 2013-05-31 2016-09-28 Nec显示器解决方案株式会社 Display device
GB2522175A (en) * 2013-10-31 2015-07-22 Barco Nv Display system
KR200477456Y1 (en) * 2014-01-21 2015-06-09 주식회사 아이디시스 Apparatus for light with senser
CN110536525A (en) * 2019-08-16 2019-12-03 安徽信息工程学院 Intelligent vehicle-carried lighting system
CN115171547B (en) * 2022-05-16 2023-11-28 昆山国显光电有限公司 Display substrate, driving method thereof and display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105026993A (en) * 2013-02-25 2015-11-04 Eizo株式会社 Light sensor attachment structure of image display device
CN105026993B (en) * 2013-02-25 2017-05-17 Eizo 株式会社 Light sensor attachment structure of image display device
CN110017895A (en) * 2019-03-26 2019-07-16 广州市轩士佳电子科技有限公司 A kind of light source monitoring system
CN110017895B (en) * 2019-03-26 2023-11-14 广州市轩士佳电子科技有限公司 Light source monitoring system

Also Published As

Publication number Publication date
KR100660238B1 (en) 2006-12-20
JP4371733B2 (en) 2009-11-25
JP2005071702A (en) 2005-03-17
TWI260446B (en) 2006-08-21
KR20050020667A (en) 2005-03-04

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees