TW200628922A - Back light device and liquid crystal display device - Google Patents

Back light device and liquid crystal display device

Info

Publication number
TW200628922A
TW200628922A TW094136252A TW94136252A TW200628922A TW 200628922 A TW200628922 A TW 200628922A TW 094136252 A TW094136252 A TW 094136252A TW 94136252 A TW94136252 A TW 94136252A TW 200628922 A TW200628922 A TW 200628922A
Authority
TW
Taiwan
Prior art keywords
light
diffusion sheet
liquid crystal
crystal display
emitting
Prior art date
Application number
TW094136252A
Other languages
Chinese (zh)
Inventor
Kenji Yoshida
Mitsuhiro Suzuki
Masatoshi Oba
Masaki Yamada
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Publication of TW200628922A publication Critical patent/TW200628922A/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
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

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)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Led Device Packages (AREA)

Abstract

The invention is to obtain a kind of thin liquid crystal display device and back light device. The solution of the present invention is a kind of back light device 14 having diffusion sheet 36 to diffuse light and light source part 40 disposed at the back of diffusion sheet to achieve surface light by diffusing the light emitted from the light source part using the diffusion sheet. Light source part has a plurality of light emitting portions 50 disposed along the surface parallel with the diffusion sheet. Each of plural light emitting portions 50 has the substrate 66 formed by light transparent material opposite to the emitting surface 68 of the diffusion sheet and light emitting devices 72 buried into the substrate to guide all or about all the light generated by emitting devices from emitting surface toward light reflective surface 77, reflective portions 70 perpendicular to or about perpendicular to the diffusion sheet.
TW094136252A 2004-10-19 2005-10-18 Back light device and liquid crystal display device TW200628922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004304498A JP2006120355A (en) 2004-10-19 2004-10-19 Backlight device and liquid crystal display device

Publications (1)

Publication Number Publication Date
TW200628922A true TW200628922A (en) 2006-08-16

Family

ID=36538070

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094136252A TW200628922A (en) 2004-10-19 2005-10-18 Back light device and liquid crystal display device

Country Status (4)

Country Link
JP (1) JP2006120355A (en)
KR (1) KR100719737B1 (en)
CN (1) CN100443986C (en)
TW (1) TW200628922A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007311561A (en) 2006-05-18 2007-11-29 Showa Denko Kk Display unit, light emitting device, and solid-state light emitting element substrate
KR100799869B1 (en) 2006-06-29 2008-01-31 삼성전기주식회사 SYSTEM FOR DRIVING LCD BACKLIGHT COMPRISING LEDs
KR20080001050A (en) * 2006-06-29 2008-01-03 삼성전기주식회사 System for driving lcd backlight comprising leds
US20090201669A1 (en) * 2006-07-24 2009-08-13 Sharp Kabushiki Kaisha Backlight device, and display apparatus using the same
JP4711916B2 (en) * 2006-09-07 2011-06-29 シャープ株式会社 LIGHT EMITTING DEVICE AND DISPLAY DEVICE USING THE LIGHT EMITTING DEVICE
KR100786096B1 (en) * 2006-09-26 2007-12-21 엘지전자 주식회사 Back light unit and printed circuit board therefor
JP4940932B2 (en) * 2006-12-19 2012-05-30 ソニー株式会社 Backlight device and liquid crystal display device
KR101395059B1 (en) * 2007-11-29 2014-05-14 삼성디스플레이 주식회사 Backlight unit and liquid crystal display having the same
JP4364286B1 (en) * 2008-05-26 2009-11-11 株式会社東芝 Electronics
KR102090499B1 (en) 2008-12-19 2020-03-18 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Method for driving display device
JP5390973B2 (en) * 2009-07-21 2014-01-15 株式会社バッファロー LIGHTING DEVICE, LIGHTING METHOD, AND EXTERNAL STORAGE DEVICE PROVIDED WITH LIGHTING DEVICE
WO2011040427A1 (en) * 2009-09-30 2011-04-07 シャープ株式会社 Illuminating device, display device and television receiver
US20120262631A1 (en) * 2009-12-28 2012-10-18 Sharp Kabushiki Kaisha Lighting device, display device and television receiver
KR102419991B1 (en) * 2015-07-06 2022-07-13 삼성전자주식회사 Back light unit of display apparatus and display apparatus
JP6858494B2 (en) * 2016-05-25 2021-04-14 シチズン電子株式会社 LED lighting device
JP2018123996A (en) * 2017-01-31 2018-08-09 東芝ライフスタイル株式会社 refrigerator
CN110942726A (en) * 2018-09-21 2020-03-31 深圳光峰科技股份有限公司 LED display screen
JP7532746B2 (en) 2020-06-30 2024-08-14 日亜化学工業株式会社 Light emitting module and method for manufacturing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940022362A (en) * 1993-03-09 1994-10-20 김중헌 Back light source device for electronic display device
JPH07191311A (en) * 1993-12-27 1995-07-28 Kokusai Electric Co Ltd Backlight device for liquid crystal unit
JPH11249131A (en) * 1998-02-27 1999-09-17 Matsushita Electric Ind Co Ltd Illuminator for display panel, manufacture thereof, view finder using the same and camera
JP2000081848A (en) * 1998-09-03 2000-03-21 Semiconductor Energy Lab Co Ltd Electronic equipment mounting liquid crystal display device
KR20000051328A (en) * 1999-01-20 2000-08-16 구본준 Backlight assembly in the thin film transistor type optical sensor
KR100852579B1 (en) * 2003-03-31 2008-08-14 샤프 가부시키가이샤 Surface illumination device and liquid display device using the same

Also Published As

Publication number Publication date
CN1763607A (en) 2006-04-26
KR20060054070A (en) 2006-05-22
CN100443986C (en) 2008-12-17
KR100719737B1 (en) 2007-05-17
JP2006120355A (en) 2006-05-11

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