WO2009038187A1 - バックライト装置及びこれを用いた液晶表示装置 - Google Patents

バックライト装置及びこれを用いた液晶表示装置 Download PDF

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Publication number
WO2009038187A1
WO2009038187A1 PCT/JP2008/067007 JP2008067007W WO2009038187A1 WO 2009038187 A1 WO2009038187 A1 WO 2009038187A1 JP 2008067007 W JP2008067007 W JP 2008067007W WO 2009038187 A1 WO2009038187 A1 WO 2009038187A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
same
crystal display
display device
backlight device
Prior art date
Application number
PCT/JP2008/067007
Other languages
English (en)
French (fr)
Inventor
Takeshi Adachi
Original Assignee
Mitsumi Electric Co., Ltd.
Atrc Corporation
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
Priority claimed from JP2008239735A external-priority patent/JP4990861B2/ja
Application filed by Mitsumi Electric Co., Ltd., Atrc Corporation filed Critical Mitsumi Electric Co., Ltd.
Priority to CN2008801075309A priority Critical patent/CN101849133B/zh
Priority to US12/677,839 priority patent/US8724051B2/en
Publication of WO2009038187A1 publication Critical patent/WO2009038187A1/ja

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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]

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)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

　光源を有し、該光源により液晶パネルの背面から照明するバックライト装置であって、 　前記光源は、白色発光ダイオードとカラー発光ダイオードを有することを特徴とする。
PCT/JP2008/067007 2007-09-20 2008-09-19 バックライト装置及びこれを用いた液晶表示装置 WO2009038187A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008801075309A CN101849133B (zh) 2007-09-20 2008-09-19 背光装置以及使用该背光装置的液晶显示装置
US12/677,839 US8724051B2 (en) 2007-09-20 2008-09-19 Backlight device, and liquid crystal display using the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-243261 2007-09-20
JP2007243261 2007-09-20
JP2008239735A JP4990861B2 (ja) 2007-09-20 2008-09-18 バックライト装置及びこれを用いた液晶表示装置
JP2008-239735 2008-09-18

Publications (1)

Publication Number Publication Date
WO2009038187A1 true WO2009038187A1 (ja) 2009-03-26

Family

ID=40467996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/067007 WO2009038187A1 (ja) 2007-09-20 2008-09-19 バックライト装置及びこれを用いた液晶表示装置

Country Status (1)

Country Link
WO (1) WO2009038187A1 (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004071902A (ja) * 2002-08-07 2004-03-04 Sanken Electric Co Ltd 半導体発光装置
JP2006237282A (ja) * 2005-02-25 2006-09-07 Sanyo Electric Co Ltd 発光ダイオード光源
JP2007141834A (ja) * 2005-11-14 2007-06-07 Agilent Technol Inc 白色光を発生するためのシステム及び方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004071902A (ja) * 2002-08-07 2004-03-04 Sanken Electric Co Ltd 半導体発光装置
JP2006237282A (ja) * 2005-02-25 2006-09-07 Sanyo Electric Co Ltd 発光ダイオード光源
JP2007141834A (ja) * 2005-11-14 2007-06-07 Agilent Technol Inc 白色光を発生するためのシステム及び方法

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