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WO2008136307A1 - Direct-lighting backlight - Google Patents

Direct-lighting backlight Download PDF

Info

Publication number
WO2008136307A1
WO2008136307A1 PCT/JP2008/057738 JP2008057738W WO2008136307A1 WO 2008136307 A1 WO2008136307 A1 WO 2008136307A1 JP 2008057738 W JP2008057738 W JP 2008057738W WO 2008136307 A1 WO2008136307 A1 WO 2008136307A1
Authority
WO
WIPO (PCT)
Prior art keywords
direct
lighting backlight
back frame
fluorescent lamps
backlight
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.)
Ceased
Application number
PCT/JP2008/057738
Other languages
French (fr)
Japanese (ja)
Inventor
Tatsuya Ikeda
Naoki Tsutsui
Masahiko Tamai
Tsukasa Kaji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Harison Toshiba Lighting 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 Harison Toshiba Lighting Corp filed Critical Harison Toshiba Lighting Corp
Priority to CN200880013689A priority Critical patent/CN101680609A/en
Priority to JP2009512933A priority patent/JPWO2008136307A1/en
Publication of WO2008136307A1 publication Critical patent/WO2008136307A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

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)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A direct-lighting backlight is provided with a back frame (1b) having a bottomed opening; a plurality of fluorescent lamps (2), each of which is arranged in the back frame (1b) and has a diameter(R) of 6.0mm or more; and a diffuser plate (3) arranged on an opening section (1b3) of the back frame (1b). When a pitch of the adjacent fluorescent lamps (2) is expressed as P(mm), an inequality of P≥3.5R is satisfied.
PCT/JP2008/057738 2007-04-27 2008-04-22 Direct-lighting backlight Ceased WO2008136307A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880013689A CN101680609A (en) 2007-04-27 2008-04-22 Direct Type Backlight
JP2009512933A JPWO2008136307A1 (en) 2007-04-27 2008-04-22 Direct type backlight

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-118263 2007-04-27
JP2007118263 2007-04-27

Publications (1)

Publication Number Publication Date
WO2008136307A1 true WO2008136307A1 (en) 2008-11-13

Family

ID=39943419

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/057738 Ceased WO2008136307A1 (en) 2007-04-27 2008-04-22 Direct-lighting backlight

Country Status (5)

Country Link
JP (1) JPWO2008136307A1 (en)
KR (1) KR20100015925A (en)
CN (1) CN101680609A (en)
TW (1) TW200912470A (en)
WO (1) WO2008136307A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011081929A (en) * 2009-10-05 2011-04-21 Hitachi Consumer Electronics Co Ltd Backlight unit, and liquid crystal display using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003279979A (en) * 2002-03-22 2003-10-02 Hitachi Ltd Liquid crystal display device
JP2004354533A (en) * 2003-05-27 2004-12-16 Fdk Corp Backlight unit
JP2005043832A (en) * 2003-07-25 2005-02-17 Lg Phillips Lcd Co Ltd Backlight device for liquid crystal display device and reflecting means used therefor
JP2007273222A (en) * 2006-03-31 2007-10-18 Nippo Electric Co Ltd Planar light source
JP2008014984A (en) * 2006-07-03 2008-01-24 Hitachi Displays Ltd Liquid crystal display

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003279979A (en) * 2002-03-22 2003-10-02 Hitachi Ltd Liquid crystal display device
JP2004354533A (en) * 2003-05-27 2004-12-16 Fdk Corp Backlight unit
JP2005043832A (en) * 2003-07-25 2005-02-17 Lg Phillips Lcd Co Ltd Backlight device for liquid crystal display device and reflecting means used therefor
JP2007273222A (en) * 2006-03-31 2007-10-18 Nippo Electric Co Ltd Planar light source
JP2008014984A (en) * 2006-07-03 2008-01-24 Hitachi Displays Ltd Liquid crystal display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011081929A (en) * 2009-10-05 2011-04-21 Hitachi Consumer Electronics Co Ltd Backlight unit, and liquid crystal display using the same

Also Published As

Publication number Publication date
KR20100015925A (en) 2010-02-12
TW200912470A (en) 2009-03-16
CN101680609A (en) 2010-03-24
JPWO2008136307A1 (en) 2010-07-29

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