JP5796312B2 - 面光源装置 - Google Patents
面光源装置 Download PDFInfo
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- JP5796312B2 JP5796312B2 JP2011057300A JP2011057300A JP5796312B2 JP 5796312 B2 JP5796312 B2 JP 5796312B2 JP 2011057300 A JP2011057300 A JP 2011057300A JP 2011057300 A JP2011057300 A JP 2011057300A JP 5796312 B2 JP5796312 B2 JP 5796312B2
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- JP
- Japan
- Prior art keywords
- light
- light source
- source device
- guide plate
- light guide
- Prior art date
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- 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
-
- 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
-
- 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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
-
- 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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/18—Edge-illuminated signs
-
- 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
- G02B6/0018—Redirecting means on the surface of the light guide
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Telephone Set Structure (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
本発明の第2の面光源装置によれば、導光板の光出射面及びその反対面以外の表面のうち少なくとも1つの表面の少なくとも一部に、光制御手段として、当該光制御手段に入射する光を散乱させる光散乱面を設けているので、導光板のある面で反射して望まない方向から表示領域へ到達していた光を光制御手段である散乱面で散乱させることで、望まない方向から表示部へ届いていた光を少なくすることができ、望まない方向からの光で表示領域を光らせるのを防止することができる。よって、余分な迷光を少なくし、表示領域が発光しているときに、見る方向が変化したり、面光源装置の組み込まれた機器を傾けたりしても表示領域のちらつきが発生しにくくなる。
本発明の実施形態1による面光源装置21を説明する。図5は、実施形態1による面光源装置21の概略平面図である。この実施形態では、従来の面光源装置15において、光源17から導光板16内に入射し、導光板16の側面16bで全反射した後に表示部19へ達していた光Lbに着目する(図3(A)参照)。
つぎに、本発明の実施形態2による面光源装置31を説明する。図8は、実施形態2による面光源装置31の概略平面図である。
つぎに、本発明の実施形態3による面光源装置41を説明する。図9は、実施形態3による面光源装置41の概略平面図である。
12 液晶表示画面
13 アイコン
16 導光板
16a 光入射端面
16b 側面
16c 光出射面
17 光源
18 偏向パターン
19 表示部
21、31、41 面光源装置
22 切欠き
32 光吸収層
42 光散乱面
Claims (4)
- 光源と、
前記光源から導入された光を光出射面の表示領域から出射させる導光板と、
を備えた面光源装置であって、
前記導光板の光出射面又はその反対面のうち少なくとも一方の面において、前記表示領域に、偏向傾斜面を有する複数個の偏向パターンが形成され、
前記導光板の前記光出射面及びその反対面以外の表面のうち少なくとも1つの表面の少なくとも一部に、当該表面で反射して前記表示領域へ向かう光を低減させるための光制御手段が設けられ、
前記光制御手段は、当該光制御手段に入射する光を前記導光板の外部へ透過させるように角度を定めた切欠き部であることを特徴とする面光源装置。 - 光源と、
前記光源から導入された光を光出射面の表示領域から出射させる導光板と、
を備えた面光源装置であって、
前記導光板の光出射面又はその反対面のうち少なくとも一方の面において、前記表示領域に、偏向傾斜面を有する複数個の偏向パターンが形成され、
前記導光板の前記光出射面及びその反対面以外の表面のうち少なくとも1つの表面の少なくとも一部に、当該表面で反射して前記表示領域へ向かう光を低減させるための光制御手段が設けられ、
前記光制御手段は、当該光制御手段に入射する光を散乱させる光散乱面であることを特徴とする面光源装置。 - 送受話機能を有する携帯電話機であって、ある形状を光で表示させるために請求項1又は2に記載の面光源装置を備えたことを特徴とする携帯電話機。
- 情報処理機能を備えた情報端末において、ある形状を光で表示させるために請求項1又は2に記載の面光源装置を備えたことを特徴とする情報端末。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011057300A JP5796312B2 (ja) | 2011-03-15 | 2011-03-15 | 面光源装置 |
TW101103636A TW201239271A (en) | 2011-03-15 | 2012-02-04 | Planar light source device |
PCT/JP2012/055841 WO2012124570A1 (ja) | 2011-03-15 | 2012-03-07 | 面光源装置 |
AU2012227546A AU2012227546A1 (en) | 2011-03-15 | 2012-03-07 | Surface illumination device |
US14/002,029 US20140016347A1 (en) | 2011-03-15 | 2012-03-07 | Surface illumination device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011057300A JP5796312B2 (ja) | 2011-03-15 | 2011-03-15 | 面光源装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012195115A JP2012195115A (ja) | 2012-10-11 |
JP5796312B2 true JP5796312B2 (ja) | 2015-10-21 |
Family
ID=46830643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011057300A Active JP5796312B2 (ja) | 2011-03-15 | 2011-03-15 | 面光源装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140016347A1 (ja) |
JP (1) | JP5796312B2 (ja) |
AU (1) | AU2012227546A1 (ja) |
TW (1) | TW201239271A (ja) |
WO (1) | WO2012124570A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5849998B2 (ja) | 2013-06-25 | 2016-02-03 | 株式会社デンソー | 車両用表示装置 |
JP2017204367A (ja) * | 2016-05-10 | 2017-11-16 | ミネベアミツミ株式会社 | 面状照明装置 |
JP6778916B2 (ja) * | 2016-11-17 | 2020-11-04 | パナソニックIpマネジメント株式会社 | 表示装置 |
JP7108839B2 (ja) * | 2018-05-30 | 2022-07-29 | パナソニックIpマネジメント株式会社 | 表示装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5291785U (ja) * | 1975-12-29 | 1977-07-08 | ||
WO2003069222A1 (fr) * | 2002-01-18 | 2003-08-21 | Mitsubishi Rayon Co., Ltd. | Dispositif d'eclairage |
JP4181935B2 (ja) * | 2003-07-16 | 2008-11-19 | 株式会社クラレ | 面光源素子およびそれを用いた表示装置 |
JP4507062B2 (ja) * | 2003-11-20 | 2010-07-21 | オムロン株式会社 | 面光源装置及び当該装置を用いた機器 |
JP4169000B2 (ja) * | 2004-12-02 | 2008-10-22 | セイコーエプソン株式会社 | 照明装置および導光板 |
TWI337677B (en) * | 2006-05-24 | 2011-02-21 | Wintek Corp | Backlight module and light guide plate used in the same |
JP2008299116A (ja) * | 2007-05-31 | 2008-12-11 | Fujikura Ltd | 機器 |
JP2009204885A (ja) * | 2008-02-28 | 2009-09-10 | Omron Corp | 表示装置 |
-
2011
- 2011-03-15 JP JP2011057300A patent/JP5796312B2/ja active Active
-
2012
- 2012-02-04 TW TW101103636A patent/TW201239271A/zh unknown
- 2012-03-07 AU AU2012227546A patent/AU2012227546A1/en not_active Abandoned
- 2012-03-07 WO PCT/JP2012/055841 patent/WO2012124570A1/ja active Application Filing
- 2012-03-07 US US14/002,029 patent/US20140016347A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2012124570A1 (ja) | 2012-09-20 |
US20140016347A1 (en) | 2014-01-16 |
AU2012227546A1 (en) | 2013-10-03 |
JP2012195115A (ja) | 2012-10-11 |
TW201239271A (en) | 2012-10-01 |
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