TW200951504A - Optical element, and light source unit and liquid crystal display device provided with the optical element - Google Patents

Optical element, and light source unit and liquid crystal display device provided with the optical element

Info

Publication number
TW200951504A
TW200951504A TW098108646A TW98108646A TW200951504A TW 200951504 A TW200951504 A TW 200951504A TW 098108646 A TW098108646 A TW 098108646A TW 98108646 A TW98108646 A TW 98108646A TW 200951504 A TW200951504 A TW 200951504A
Authority
TW
Taiwan
Prior art keywords
light
optical element
incoming
liquid crystal
display device
Prior art date
Application number
TW098108646A
Other languages
Chinese (zh)
Other versions
TWI427330B (en
Inventor
Hideki Hayashi
Makoto Hishida
Original Assignee
Sekisui 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Publication of TW200951504A publication Critical patent/TW200951504A/en
Application granted granted Critical
Publication of TWI427330B publication Critical patent/TWI427330B/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
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
    • G02F1/133604—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
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Abstract

Provided is an optical element which has high light extracting efficiency and eliminates luminance nonuniformity in two orthogonally intersecting directions in backlight wherein dot-like light sources are arranged in matrix. An optical element (3) is provided with a light transmitting optical sheet (20) and a light diffusing sheet (10). The optical sheet (20) has a light incoming surface (20a) and a light outgoing surface (20b). At least on the light incoming surface (20a) or the light outgoing surface (20b), a microlens array (21) wherein a plurality of microlenses (22), each of which is formed in a protruding shape or a recessed shape, are arranged at a pitch less than 10μm in a cycle and in matrix is formed. The light diffusing sheet (10) is arranged on the side of the light outgoing surface (20b) of the optical sheet (20). The light diffusing sheet (10) diffuses incoming light by refracting the incoming light.
TW098108646A 2008-03-18 2009-03-17 An optical element having a light source unit and a liquid crystal display device TWI427330B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008069828 2008-03-18

Publications (2)

Publication Number Publication Date
TW200951504A true TW200951504A (en) 2009-12-16
TWI427330B TWI427330B (en) 2014-02-21

Family

ID=41090861

Family Applications (1)

Application Number Title Priority Date Filing Date
TW098108646A TWI427330B (en) 2008-03-18 2009-03-17 An optical element having a light source unit and a liquid crystal display device

Country Status (5)

Country Link
JP (1) JP4440335B2 (en)
KR (1) KR20100126393A (en)
CN (1) CN101978293A (en)
TW (1) TWI427330B (en)
WO (1) WO2009116458A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120007944A (en) * 2010-07-15 2012-01-25 주식회사 엘지화학 Optical film having enhanced optical performance and back light unit comprising the same
KR101279483B1 (en) 2011-06-29 2013-07-05 엘지이노텍 주식회사 Optical plate and lighting device using the same
JP2013057736A (en) * 2011-09-07 2013-03-28 Mitsubishi Rayon Co Ltd Optical film and optical device using the same
JP5851810B2 (en) * 2011-11-25 2016-02-03 浜松ホトニクス株式会社 Reference light source
KR101859413B1 (en) 2011-12-26 2018-05-21 삼성디스플레이 주식회사 A display module and an apparatus having the same
CN104763899B (en) * 2015-04-01 2017-05-17 矽照光电（厦门）有限公司 LED lamp
WO2016163125A1 (en) 2015-04-08 2016-10-13 株式会社クラレ Composite diffusion plate
TW201725341A (en) 2015-10-09 2017-07-16 松下知識產權經營股份有限公司 Optical member and microlens array
CN114325900A (en) * 2015-10-29 2022-04-12 迪睿合株式会社 Diffusion plate, method for designing diffusion plate, method for manufacturing diffusion plate, display device, projection device, and illumination device
CN106054307A (en) * 2016-07-28 2016-10-26 滁州佳宏光电有限公司 Light guide plate with brightening effect and manufacturing process thereof
KR102618044B1 (en) * 2016-08-19 2023-12-27 엘지이노텍 주식회사 Display module and display device for virtual reality
US11131883B2 (en) * 2018-06-22 2021-09-28 Minebea Mitsumi Inc. Planar lighting device
CN110208984B (en) * 2019-05-28 2020-12-25 惠州市华星光电技术有限公司 Backlight structure and display panel
CN114024207A (en) * 2020-07-17 2022-02-08 宁波舜宇车载光学技术有限公司 Transmitting terminal and preparation method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10319216A (en) * 1997-05-20 1998-12-04 Dainippon Printing Co Ltd Lens film, surface light source device, and liquid crystal display device
JP4133420B2 (en) * 2002-03-26 2008-08-13 シャープ株式会社 Backlight and liquid crystal display device
TWI250320B (en) * 2002-11-20 2006-03-01 Hon Hai Prec Ind Co Ltd Method of manufacturing a light guide plane
TWI276882B (en) * 2004-12-10 2007-03-21 Hon Hai Prec Ind Co Ltd Light guide plate and backlight module
JP2007273380A (en) * 2006-03-31 2007-10-18 Fujifilm Corp Backlight light source, backlight unit, and display device
JP2007335182A (en) * 2006-06-14 2007-12-27 Kuraray Co Ltd Surface light source element, light control member used therefor, and image display device using surface light source

Also Published As

Publication number Publication date
JPWO2009116458A1 (en) 2011-07-21
WO2009116458A1 (en) 2009-09-24
KR20100126393A (en) 2010-12-01
TWI427330B (en) 2014-02-21
CN101978293A (en) 2011-02-16
JP4440335B2 (en) 2010-03-24

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Legal Events

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