TW200702838A - Light guide plate and backlight device - Google Patents

Light guide plate and backlight device

Info

Publication number
TW200702838A
TW200702838A TW095109127A TW95109127A TW200702838A TW 200702838 A TW200702838 A TW 200702838A TW 095109127 A TW095109127 A TW 095109127A TW 95109127 A TW95109127 A TW 95109127A TW 200702838 A TW200702838 A TW 200702838A
Authority
TW
Taiwan
Prior art keywords
guide plate
light guide
optic
grooves
light
Prior art date
Application number
TW095109127A
Other languages
Chinese (zh)
Other versions
TWI334507B (en
Inventor
Yoshiyasu Ishikawa
Teruo Teshima
Masao Inose
Toshiyuki Takaiwa
Kazuhiro Makishima
Original Assignee
Hitachi Chemical Co Ltd
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 Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Publication of TW200702838A publication Critical patent/TW200702838A/en
Application granted granted Critical
Publication of TWI334507B publication Critical patent/TWI334507B/en

Links

Classifications

    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0252—Diffusing elements; Afocal elements characterised by the diffusing properties using holographic or diffractive means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0257—Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Liquid Crystal (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

A light guide plate, having uniform planar light and light using efficiency, is provided. The reflective surface 13 of the light guide plate has multiple first optic grooves 14 and second optic grooves 15. The first optic grooves 14 are formed in the transverse direction. The second optic grooves 15 are formed in the vertical direction, and a predetermined distance is between the light incident surface 11 and the second optic grooves 15. The light exit surface 12 of the light guide plate has a hologram with anisotropic diffusing patterns.
TW95109127A 2005-03-18 2006-03-17 Light guide plate and backlight device TWI334507B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005080252A JP2006261064A (en) 2005-03-18 2005-03-18 Light guide plate and backlight device

Publications (2)

Publication Number Publication Date
TW200702838A true TW200702838A (en) 2007-01-16
TWI334507B TWI334507B (en) 2010-12-11

Family

ID=37023672

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95109127A TWI334507B (en) 2005-03-18 2006-03-17 Light guide plate and backlight device

Country Status (3)

Country Link
JP (1) JP2006261064A (en)
TW (1) TWI334507B (en)
WO (1) WO2006101011A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518981A (en) * 2007-12-27 2012-06-27 京瓷株式会社 Light source device and display device

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5470846B2 (en) * 2007-01-24 2014-04-16 東レ株式会社 Diffusion sheet and backlight unit using the same
CA2678105A1 (en) * 2007-02-20 2008-08-28 Nobuo Oyama Light source unit, lighting apparatus using the light source unit, and plant growing equipment using the lighting apparatus
TWI349121B (en) 2007-05-17 2011-09-21 Wintek Corp Light guide plate and backlight module having the same
JP4747153B2 (en) * 2007-11-06 2011-08-17 瑞儀光電股▲分▼有限公司 Structure that corrects the outgoing light field of the light guide plate
KR20090058612A (en) * 2007-12-05 2009-06-10 선문대학교 산학협력단 Optical panel having light diffusing waveguides for backlight
JP2009157074A (en) * 2007-12-26 2009-07-16 Asahi Kasei Corp Beam control unit
JP5275693B2 (en) * 2008-06-12 2013-08-28 古河電気工業株式会社 Planar light emitter, planar light emitter unit, and liquid crystal display device
JP5731112B2 (en) * 2008-12-03 2015-06-10 パナソニック株式会社 Light guide plate and display device using the same
WO2012043361A1 (en) * 2010-09-29 2012-04-05 シャープ株式会社 Illumination device and display device
KR101980698B1 (en) 2012-10-15 2019-05-22 삼성디스플레이 주식회사 Prism sheet, back light unit and manufacturing method thereof
DE102018104055A1 (en) * 2018-02-22 2019-08-22 Automotive Lighting Reutlingen Gmbh Lighting device for motor vehicles with an elongated light guide
CN116917662A (en) * 2021-12-20 2023-10-20 京东方科技集团股份有限公司 Light guide plate and backlight module

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3615355B2 (en) * 1997-06-04 2005-02-02 株式会社エンプラス Sidelight type surface light source device and light guide plate
JP4170084B2 (en) * 2002-12-04 2008-10-22 三菱電機株式会社 Planar light source device and display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518981A (en) * 2007-12-27 2012-06-27 京瓷株式会社 Light source device and display device
CN102518981B (en) * 2007-12-27 2015-06-17 京瓷株式会社 Light source device and display device

Also Published As

Publication number Publication date
JP2006261064A (en) 2006-09-28
TWI334507B (en) 2010-12-11
WO2006101011A1 (en) 2006-09-28

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Legal Events

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