WO2002004858A3 - Backlight with structured sufaces - Google Patents

Backlight with structured sufaces Download PDF

Info

Publication number
WO2002004858A3
WO2002004858A3 PCT/US2001/021294 US0121294W WO0204858A3 WO 2002004858 A3 WO2002004858 A3 WO 2002004858A3 US 0121294 W US0121294 W US 0121294W WO 0204858 A3 WO0204858 A3 WO 0204858A3
Authority
WO
WIPO (PCT)
Prior art keywords
lightguide
backlight
sufaces
structured
optical structures
Prior art date
Application number
PCT/US2001/021294
Other languages
French (fr)
Other versions
WO2002004858A2 (en
Inventor
Mark E Gardiner
Sandford Cobb
Wade D Kretman
Original Assignee
3M Innovative Properties 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
Priority claimed from US09/613,313 external-priority patent/US7046905B1/en
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to KR1020037000339A priority Critical patent/KR100830261B1/en
Priority to AU7586801A priority patent/AU7586801A/en
Priority to JP2002509691A priority patent/JP2004507866A/en
Priority to CA002413700A priority patent/CA2413700C/en
Priority to EP01953417A priority patent/EP1301743A2/en
Priority to AU2001275868A priority patent/AU2001275868B8/en
Publication of WO2002004858A2 publication Critical patent/WO2002004858A2/en
Publication of WO2002004858A3 publication Critical patent/WO2002004858A3/en
Priority to HK03106684.5A priority patent/HK1056210A1/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
    • 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
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • 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
    • G02B6/007—Incandescent lamp or gas discharge lamp
    • G02B6/0071—Incandescent lamp or gas discharge lamp with elongated shape, e.g. tube

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)

Abstract

A backlight includes a lightguide (16), a light source (12) disposed with respect to the lightguide (16) to introduce light into the lightguide (16) and a turning film. Optical structures (40) are formed in one of an output surface (18) and a back surface (20) of the lightguide (16). The optical structures (40) are arranged to extract light from the lightguide (16). A back reflector (24) is disposed adjacent the back surface (20). The optical structures (40) are formed to include a varying pattern arranged to mask non-uniformities in the output of the lightguide (16).
PCT/US2001/021294 2000-07-11 2001-07-05 Backlight with structured sufaces WO2002004858A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1020037000339A KR100830261B1 (en) 2000-07-11 2001-07-05 Backlight with structured surfaces
AU7586801A AU7586801A (en) 2000-07-11 2001-07-05 Backlight with structured sufaces
JP2002509691A JP2004507866A (en) 2000-07-11 2001-07-05 Backlight with structured surface
CA002413700A CA2413700C (en) 2000-07-11 2001-07-05 Backlight with structured sufaces
EP01953417A EP1301743A2 (en) 2000-07-11 2001-07-05 Backlight with structured sufaces
AU2001275868A AU2001275868B8 (en) 2000-07-11 2001-07-05 Backlight with structured surfaces
HK03106684.5A HK1056210A1 (en) 2000-07-11 2003-09-17 Backlight with structured surfaces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/613,313 US7046905B1 (en) 1999-10-08 2000-07-11 Blacklight with structured surfaces
US09/613,313 2000-07-11

Publications (2)

Publication Number Publication Date
WO2002004858A2 WO2002004858A2 (en) 2002-01-17
WO2002004858A3 true WO2002004858A3 (en) 2002-05-23

Family

ID=24456785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/021294 WO2002004858A2 (en) 2000-07-11 2001-07-05 Backlight with structured sufaces

Country Status (8)

Country Link
EP (1) EP1301743A2 (en)
JP (1) JP2004507866A (en)
KR (1) KR100830261B1 (en)
CN (1) CN100350308C (en)
AU (2) AU2001275868B8 (en)
CA (1) CA2413700C (en)
HK (1) HK1056210A1 (en)
WO (1) WO2002004858A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7767273B2 (en) 2005-03-09 2010-08-03 3M Innovative Properties Company Apparatus and method for producing two-sided patterned web in registration
US7931841B2 (en) 2005-03-09 2011-04-26 3M Innovative Properties Company Microreplicated article
US9134471B2 (en) 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method

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US20050024849A1 (en) * 1999-02-23 2005-02-03 Parker Jeffery R. Methods of cutting or forming cavities in a substrate for use in making optical films, components or wave guides
US6908202B2 (en) 2002-10-03 2005-06-21 General Electric Company Bulk diffuser for flat panel display
KR100926299B1 (en) 2002-11-13 2009-11-12 삼성전자주식회사 A reflector for a back light assembly and the back light assembly using thereof
US7316498B2 (en) * 2003-12-31 2008-01-08 General Electric Company Faceted optical substrate and method of fabricating a faceted optical substrate and a backlight display comprising the faceted optical substrate
US7106517B2 (en) * 2003-12-31 2006-09-12 General Electric Company Display optical films
KR100487105B1 (en) * 2004-06-04 2005-05-04 주식회사 엘지에스 Optical film
KR100553155B1 (en) * 2004-06-04 2006-02-22 주식회사 엘지에스 Optical film
KR100512193B1 (en) * 2004-10-29 2005-09-05 주식회사 엘지에스 Optical film and back-light unit has them
KR101196035B1 (en) * 2005-03-09 2012-10-30 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Microreplicated article with defect-reducing surface
CN101171090B (en) 2005-03-09 2010-06-16 3M创新有限公司 Apparatus and method for making microreplicated article
KR20080006587A (en) * 2005-04-08 2008-01-16 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Structured oriented films for use in displays
EP1929361A4 (en) * 2005-08-27 2009-10-21 3M Innovative Properties Co Illumination assembly and system
US7815355B2 (en) 2005-08-27 2010-10-19 3M Innovative Properties Company Direct-lit backlight having light recycling cavity with concave transflector
CN100406999C (en) * 2005-09-09 2008-07-30 财团法人工业技术研究院 Light guide plate and backlight module using same
CN101331422B (en) * 2005-12-15 2012-11-14 Tp视觉控股有限公司 Display system with variable diffuser
KR100770929B1 (en) * 2006-05-26 2007-10-26 삼성전자주식회사 Light guide panel and backlight unit using the same
JP4874009B2 (en) * 2006-06-19 2012-02-08 シチズン電子株式会社 Light diffuser
KR100784021B1 (en) 2006-07-04 2007-12-10 삼성에스디아이 주식회사 Backlight unit of a liquid crystal display device
JP4725529B2 (en) * 2007-02-13 2011-07-13 ソニー株式会社 Backlight drive device, display device
WO2008153528A1 (en) 2007-06-14 2008-12-18 Avery Dennison Corporation Illuminated graphical and information display
WO2009100560A1 (en) * 2008-01-31 2009-08-20 Dingguo Pan A disc-shaped light reflecting plate with variable section unequilateral right triangles prisms and a lamp made therefrom
US9810817B2 (en) 2008-04-02 2017-11-07 3M Innovative Properties Company Light directing film and method for making the same
KR100963676B1 (en) * 2008-07-23 2010-06-15 제일모직주식회사 Prism sheet with improved front brightness and viewing angle, back light unit having the prism sheet, and liquid crystal display device having the back light unit
US7931396B2 (en) * 2008-12-10 2011-04-26 Sharp Kabushiki Kaisha Backlight and display
CN102362247B (en) * 2009-03-27 2015-08-12 木本股份有限公司 Anti-Newton ring sheet material and the touch-screen employing it
CN101852876B (en) * 2009-04-02 2012-06-13 财团法人工业技术研究院 Composite optical diaphragm and surface light source module
JP5866765B2 (en) * 2010-04-28 2016-02-17 ソニー株式会社 Conductive element and manufacturing method thereof, wiring element, information input device, display device, and electronic apparatus
JP5610202B2 (en) * 2010-06-23 2014-10-22 ミネベア株式会社 Surface lighting device
EP2463157B1 (en) * 2010-12-10 2015-04-15 SMR Patents S.à.r.l. Rear view mirror assembly with optical indicator
US8770810B2 (en) 2010-12-10 2014-07-08 Smr Patents S.A.R.L. Rear view mirror assembly with optical indicator
JP2017207736A (en) * 2016-05-16 2017-11-24 恵和株式会社 Optical sheet for liquid crystal display device, backlight unit for liquid crystal display device and production method of optical sheet for liquid crystal display device
JP7214334B2 (en) * 2016-06-14 2023-01-30 恵和株式会社 Prism sheet for backlight unit and backlight unit for liquid crystal display device
US9810904B1 (en) * 2016-11-11 2017-11-07 Google Inc. Fresnel lens assembly having varying facet angle
FR3089308A1 (en) 2018-11-30 2020-06-05 Commissariat A L'energie Atomique Et Aux Energies Alternatives Optical coupler
FI20216059A1 (en) * 2021-10-13 2023-04-14 Nanocomp Oy Ltd Light guide

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EP0426411A2 (en) * 1989-10-30 1991-05-08 Minnesota Mining And Manufacturing Company Light fixture with beam shaping lens
JPH07159622A (en) * 1993-12-07 1995-06-23 Nippon Chemitec Kk Wedge light transmission plate and surface type illuminating body using the same
JPH09145933A (en) * 1995-11-27 1997-06-06 Hitachi Ltd Liquid crystal display device
US5775791A (en) * 1992-08-31 1998-07-07 Copal Company Limited Surface emission apparatus
JPH10339815A (en) * 1997-06-09 1998-12-22 Sanyo Electric Co Ltd Light guide plate, manufacture of light guide plate, and surface light source using the light guid plate
US5921651A (en) * 1995-03-31 1999-07-13 Enplas Corporation Surface light source device of side light type having diffusing element with improved distribution pattern of light
JPH11202135A (en) * 1998-01-14 1999-07-30 Ohtsu Tire & Rubber Co Ltd :The Back light unit, manufacture of back light unit and light guide plate
JPH11250714A (en) * 1998-02-27 1999-09-17 Omron Corp Surface light source device
US5997148A (en) * 1997-06-04 1999-12-07 Enplas Corporation Surface light source device of side light type
WO2001027527A1 (en) * 1999-10-08 2001-04-19 3M Innovative Properties Company Optical element having programmed optical structures

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US5854872A (en) * 1996-10-08 1998-12-29 Clio Technologies, Inc. Divergent angle rotator system and method for collimating light beams
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WO1999042861A1 (en) * 1998-02-18 1999-08-26 Minnesota Mining And Manufacturing Company Optical film

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Publication number Priority date Publication date Assignee Title
EP0426411A2 (en) * 1989-10-30 1991-05-08 Minnesota Mining And Manufacturing Company Light fixture with beam shaping lens
US5775791A (en) * 1992-08-31 1998-07-07 Copal Company Limited Surface emission apparatus
JPH07159622A (en) * 1993-12-07 1995-06-23 Nippon Chemitec Kk Wedge light transmission plate and surface type illuminating body using the same
US5921651A (en) * 1995-03-31 1999-07-13 Enplas Corporation Surface light source device of side light type having diffusing element with improved distribution pattern of light
JPH09145933A (en) * 1995-11-27 1997-06-06 Hitachi Ltd Liquid crystal display device
US5997148A (en) * 1997-06-04 1999-12-07 Enplas Corporation Surface light source device of side light type
JPH10339815A (en) * 1997-06-09 1998-12-22 Sanyo Electric Co Ltd Light guide plate, manufacture of light guide plate, and surface light source using the light guid plate
JPH11202135A (en) * 1998-01-14 1999-07-30 Ohtsu Tire & Rubber Co Ltd :The Back light unit, manufacture of back light unit and light guide plate
JPH11250714A (en) * 1998-02-27 1999-09-17 Omron Corp Surface light source device
WO2001027527A1 (en) * 1999-10-08 2001-04-19 3M Innovative Properties Company Optical element having programmed optical structures

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7767273B2 (en) 2005-03-09 2010-08-03 3M Innovative Properties Company Apparatus and method for producing two-sided patterned web in registration
US7931841B2 (en) 2005-03-09 2011-04-26 3M Innovative Properties Company Microreplicated article
US8968629B2 (en) 2005-03-09 2015-03-03 3M Innovative Properties Company Apparatus and method for producing two-sided patterned web in registration
US9134471B2 (en) 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method
US9259885B2 (en) 2006-06-28 2016-02-16 3M Innovative Properties Company Oriented polymeric articles and method

Also Published As

Publication number Publication date
CA2413700A1 (en) 2002-01-17
EP1301743A2 (en) 2003-04-16
AU7586801A (en) 2002-01-21
AU2001275868B2 (en) 2006-02-02
KR100830261B1 (en) 2008-05-16
KR20030015378A (en) 2003-02-20
JP2004507866A (en) 2004-03-11
WO2002004858A2 (en) 2002-01-17
CA2413700C (en) 2007-01-09
HK1056210A1 (en) 2004-02-06
AU2001275868B8 (en) 2006-05-11
CN100350308C (en) 2007-11-21
CN1464955A (en) 2003-12-31

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