JP6207117B2 - 面光源装置 - Google Patents
面光源装置 Download PDFInfo
- Publication number
- JP6207117B2 JP6207117B2 JP2011158257A JP2011158257A JP6207117B2 JP 6207117 B2 JP6207117 B2 JP 6207117B2 JP 2011158257 A JP2011158257 A JP 2011158257A JP 2011158257 A JP2011158257 A JP 2011158257A JP 6207117 B2 JP6207117 B2 JP 6207117B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- plate
- nonwoven fabric
- source device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
-
- 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
-
- 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
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
-
- 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
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)
- Liquid Crystal (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
[面光源装置の構成]
[拡散板の効果確認試験]
Tsample(λ)=Lsample(λ)/LLB(λ) …(1)
また、試料をライトボックスに置いたときのバックライトの発光スペクトルLBL−sample(λ)は、
LBL−sample(λ)=LLB(λ)×Tsample(λ) …(2)
により求められる。
Bsample=∫V(λ)・LBL−sample(λ) …(3)
また、バックライト輝度BBLは、
BBL=∫V(λ)・LLB(λ) …(4)
により求められる。以上の式(3)及び(4)より、ゲイン(有効透過率)を以下の式(5)から求める。
ゲイン=Bsample/BBL …(5)
Claims (3)
- 光を出射する光源と、
前記光源から背面側又は側面側に入射した光を導光して前面側から出射させる導光板と、
前記導光板の前面側に配置され、前記導光板から入射した光を前面側に拡散させる拡散板と、を含む面光源装置であって、
前記拡散板は、坪量が13g/m2以上、45g/m2以下の不織布からなり、80%以上のヘイズを有し、1.020以上のゲインを有する面光源装置。 - 光を出射する光源と、
前記光源から背面側に入射した光を前面側に拡散させる拡散板と、を含む面光源装置であって、
前記拡散板は、坪量が13g/m 2 以上、坪量が45g/m 2 以下の不織布からなり、80%以上のヘイズを有し、1.020以上のゲインを有する面光源装置。 - 前記拡散板の前面側に反射型偏光板又はプリズムシートが配置されている、請求項1又は2記載の面光源装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011158257A JP6207117B2 (ja) | 2011-07-19 | 2011-07-19 | 面光源装置 |
PCT/US2012/047275 WO2013012974A1 (en) | 2011-07-19 | 2012-07-19 | Surface illuminant device |
TW101126096A TWI574084B (zh) | 2011-07-19 | 2012-07-19 | 面發光裝置 |
CN201280035518.8A CN103688202A (zh) | 2011-07-19 | 2012-07-19 | 表面光源器件 |
KR1020147003740A KR20140049553A (ko) | 2011-07-19 | 2012-07-19 | 면발광 장치 |
US14/233,569 US9423549B2 (en) | 2011-07-19 | 2012-07-19 | Surface illuminant device |
EP12748597.7A EP2734877A1 (en) | 2011-07-19 | 2012-07-19 | Surface illuminant device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011158257A JP6207117B2 (ja) | 2011-07-19 | 2011-07-19 | 面光源装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2013025953A JP2013025953A (ja) | 2013-02-04 |
JP2013025953A5 JP2013025953A5 (ja) | 2014-09-04 |
JP6207117B2 true JP6207117B2 (ja) | 2017-10-04 |
Family
ID=46705023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011158257A Expired - Fee Related JP6207117B2 (ja) | 2011-07-19 | 2011-07-19 | 面光源装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9423549B2 (ja) |
EP (1) | EP2734877A1 (ja) |
JP (1) | JP6207117B2 (ja) |
KR (1) | KR20140049553A (ja) |
CN (1) | CN103688202A (ja) |
TW (1) | TWI574084B (ja) |
WO (1) | WO2013012974A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203365862U (zh) * | 2013-07-29 | 2013-12-25 | 苏州艾尔迪电子有限公司 | 背光模组及液晶显示装置 |
JP2015088269A (ja) * | 2013-10-29 | 2015-05-07 | スリーエム イノベイティブ プロパティズ カンパニー | 面光源装置、及び面光源装置の製造方法 |
DE102014003418B4 (de) | 2014-03-13 | 2017-01-05 | Carl Freudenberg Kg | Element zur Lichtmanipulation |
US10984735B2 (en) * | 2015-04-17 | 2021-04-20 | Nanosys, Inc. | White point uniformity in display devices |
DE102015106708B4 (de) * | 2015-04-30 | 2017-12-21 | Visteon Global Technologies, Inc. | Vorrichtung zur Emission von Licht, insbesondere zur Erzeugung eines Bildes |
WO2017031660A1 (en) * | 2015-08-24 | 2017-03-02 | 3M Innovative Properties Company | Method of making nonwoven diffuser elements |
JP6459921B2 (ja) | 2015-11-19 | 2019-01-30 | 株式会社デンソー | ヘッドアップディスプレイ装置 |
DE102017003361B4 (de) | 2017-04-06 | 2021-09-30 | Carl Freudenberg Kg | Element zur Lichtmanipulation |
DE102017003362A1 (de) | 2017-04-06 | 2018-10-11 | Carl Freudenberg Kg | Element zur Lichtmanipulation |
DE102017215369A1 (de) * | 2017-09-01 | 2019-03-07 | Benecke-Kaliko Ag | Lichtdurchlässige Mehrschichtverbundfolie |
JP2020056952A (ja) * | 2018-10-03 | 2020-04-09 | ユニチカ株式会社 | シート、照明装置、膜天井 |
JP2020129458A (ja) * | 2019-02-07 | 2020-08-27 | スリーエム イノベイティブ プロパティズ カンパニー | バックライト、および液晶表示装置 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0894810A (ja) | 1994-09-22 | 1996-04-12 | Nitto Denko Corp | 光拡散板 |
JP3491713B2 (ja) | 1995-05-26 | 2004-01-26 | 日東電工株式会社 | 光拡散板 |
JP3492021B2 (ja) | 1995-05-29 | 2004-02-03 | 日東電工株式会社 | 積層型光拡散板 |
JP3758708B2 (ja) | 1995-05-31 | 2006-03-22 | スリーエム カンパニー | ライトボックス |
JPH09304602A (ja) | 1996-05-14 | 1997-11-28 | Kuraray Co Ltd | 光拡散シ−ト |
JP3383260B2 (ja) * | 1999-04-26 | 2003-03-04 | 日東電工株式会社 | ニュートラル偏光板及び液晶表示装置 |
JP4359967B2 (ja) | 1999-08-16 | 2009-11-11 | 日東紡績株式会社 | 光拡散用ガラス繊維シート及びそれを用いた照明装置 |
JP2002303864A (ja) * | 2001-04-03 | 2002-10-18 | Nitto Denko Corp | 照明装置及び液晶表示装置 |
JP4531290B2 (ja) * | 2001-05-18 | 2010-08-25 | 大日本印刷株式会社 | 保護拡散フィルム、面光源装置及び液晶表示装置 |
WO2003005072A1 (en) * | 2001-06-30 | 2003-01-16 | Skc Co., Ltd. | Light diffusing film |
JP2004151707A (ja) | 2002-10-11 | 2004-05-27 | Yupo Corp | 光反射体 |
JP2005050802A (ja) * | 2003-07-16 | 2005-02-24 | Sharp Corp | 液晶表示装置、バックライト装置 |
KR20060016518A (ko) * | 2004-08-18 | 2006-02-22 | 삼성전자주식회사 | 표시장치 |
US7436469B2 (en) * | 2004-10-15 | 2008-10-14 | 3M Innovative Properties Company | Composite diffuser plates and direct-lit liquid crystal displays using same |
JP5102955B2 (ja) * | 2005-01-06 | 2012-12-19 | 株式会社ジロオコーポレートプラン | 光拡散シート及びこれを用いたバックライトユニット |
US7660040B2 (en) * | 2005-05-17 | 2010-02-09 | E. I. Du Pont De Nemours And Company | Diffuse reflective article |
JP2007140495A (ja) * | 2005-10-18 | 2007-06-07 | Toray Ind Inc | 光学シート支持体ならびにこれを用いた液晶ディスプレイ用バックライト、液晶ディスプレイおよび背面投射型ディスプレイ |
EP2067062A1 (en) | 2006-09-29 | 2009-06-10 | E.I. Du Pont De Nemours And Company | Diffuse reflector comprising nonwoven sheet |
SK51202007A3 (sk) | 2006-10-24 | 2008-08-05 | Sumitomo Chemical Company, Limited | Prostriedok živice rozptyľujúcej svetlo |
JP2008112025A (ja) | 2006-10-31 | 2008-05-15 | Toray Ind Inc | 光学シート支持体ならびにこれを用いた液晶ディスプレイ用バックライト、液晶ディスプレイおよび背面投射型ディスプレイ |
KR20090101250A (ko) | 2006-12-18 | 2009-09-24 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 디스플레이에 사용하기 위한 특정 반사율 및 두께 편차를 갖는 부직 시트를 포함하는 확산 반사기 |
US20100208165A1 (en) | 2007-10-09 | 2010-08-19 | Sharp Kabushiki Kaisha | Light control layer of backlight, backlight, liquid crystal display device, and method for producing light control layer of backlight |
EP2103972B1 (en) * | 2008-03-20 | 2014-04-23 | 3M Innovative Properties Company | Light device comprising light guide |
JP5493312B2 (ja) * | 2008-08-22 | 2014-05-14 | ソニー株式会社 | 面発光装置及び画像表示装置 |
WO2010126188A1 (ko) * | 2009-04-29 | 2010-11-04 | 도레이새한 주식회사 | 엘시디 백라이트유니트용 광확산판 |
US8459857B2 (en) * | 2010-04-26 | 2013-06-11 | Mitsubishi Electric Corporation | Planar light source device and display apparatus using the same |
-
2011
- 2011-07-19 JP JP2011158257A patent/JP6207117B2/ja not_active Expired - Fee Related
-
2012
- 2012-07-19 CN CN201280035518.8A patent/CN103688202A/zh active Pending
- 2012-07-19 TW TW101126096A patent/TWI574084B/zh not_active IP Right Cessation
- 2012-07-19 US US14/233,569 patent/US9423549B2/en not_active Expired - Fee Related
- 2012-07-19 WO PCT/US2012/047275 patent/WO2013012974A1/en active Application Filing
- 2012-07-19 KR KR1020147003740A patent/KR20140049553A/ko not_active Application Discontinuation
- 2012-07-19 EP EP12748597.7A patent/EP2734877A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
KR20140049553A (ko) | 2014-04-25 |
TW201310138A (zh) | 2013-03-01 |
TWI574084B (zh) | 2017-03-11 |
CN103688202A (zh) | 2014-03-26 |
US20140254195A1 (en) | 2014-09-11 |
US9423549B2 (en) | 2016-08-23 |
JP2013025953A (ja) | 2013-02-04 |
EP2734877A1 (en) | 2014-05-28 |
WO2013012974A1 (en) | 2013-01-24 |
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