JP7108839B2 - 表示装置 - Google Patents
表示装置 Download PDFInfo
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- JP7108839B2 JP7108839B2 JP2018103811A JP2018103811A JP7108839B2 JP 7108839 B2 JP7108839 B2 JP 7108839B2 JP 2018103811 A JP2018103811 A JP 2018103811A JP 2018103811 A JP2018103811 A JP 2018103811A JP 7108839 B2 JP7108839 B2 JP 7108839B2
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- Prior art keywords
- light
- guide plate
- light guide
- display device
- light source
- 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
- G02B6/0035—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
- G02B6/0013—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
- 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
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- G02B6/0045—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 by shaping at least a portion 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
- G02B6/005—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
- 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
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
- 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
- G02B6/0073—Light emitting diode [LED]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
図1は、実施の形態1に係る表示装置の構成概略図を示す。図中には、XYZの方向を示している。図1に示すように、表示装置10は、第1の光源11と、第2の光源12と、意匠シート15と、導光板20と、隠蔽シート30(隠蔽板)と備えている。
|(θ_1-52)-(θ52)| ≦ 40° ・・・(2)
|(θ_1-53)-(θ53)| ≦ 40° ・・・(3)
|(θ_1-54)-(θ54)| ≦ 40° ・・・(4)
且つ、
|(θ_1-51h)-(θ_51h)| ≦ 40° ・・・(5)
|(θ_1-52h)-(θ_52h)| ≦ 40° ・・・(6)
|(θ_1-53h)-(θ_53h)| ≦ 40° ・・・(7)
|(θ_1-54h)-(θ_54h)| ≦ 40° ・・・(8)
且つ、
20°< θk <60° ・・・(9)
20°< θt <60° ・・・(10)
ここで、第1斜面辺51~54の角度は、例えば、|(θ_1-51)-(θ51)|が40°を超えると、第1の光源11からの光が第1斜面辺51で反射してしまい、不要な反射光が導光板20内で伝搬してしまう。そのため、上述した(1)~(4)式を満たす必要がある。
具体的に、H_byよりもH_cpが大きいと、三角形状部50で導光板20の外方へ出射した光が、隠蔽シート30の光の透光部31を通って見えてしまう可能性がある。また、H_cpよりもH_bpが大きいと、表示したい絵柄25を形成するプリズム24での反射光が、隠蔽シート30の遮光部32で遮られて表示できなくなってしまう。そのため、上述した(11)式を満たす必要がある。
図11は、実施の形態2に係る表示装置の構成概略図を示す。以下、実施形態1と同じ部分については同じ符号を付し、相違点についてのみ説明する。
図15は、実施の形態3に係る表示装置の構成概略図を示す。以下、前記実施形態1と同じ部分については同じ符号を付し、相違点についてのみ説明する。
11、13 第1の光源
12 第2の光源
15 意匠シート(光透過性部材)
16 遮光部
17 光透過部
20 導光板
21 表示部
22 入光部
23 屈曲部
24 プリズム
26 プリズム
30 隠蔽シート(隠蔽板)
31 透光部
32 遮光部
40 導光板
41 表示部
50 三角形状部(斜面群)
55 斜面カット部
Claims (7)
- 入射端面と反射面と出射面とを有し、前記入射端面から入射した光を伝搬し、前記反射面に設けられたプリズムで反射させ、前記反射面と向かい合う前記出射面から出射させる導光板と、
前記導光板の前記入射端面に光を入射させる光源と、
前記導光板の前記出射面の側に配設されるとともに、前記導光板の前記出射面から出射する光を透過させる透光部と、前記透光部よりも光透過率が低い遮光部と、を有する隠蔽板と、
を備え、
前記導光板は、前記導光板の前記入射端面と前記入射端面に対向する対向端面とを除く側面端面に複数の斜面を含む斜面群を有し、
前記複数の斜面の辺の中心と前記光源の中心とを結ぶ線分と、前記斜面の辺とは略垂直である
表示装置。 - 前記光源は、複数の光源のうちの一つであり、
前記複数の光源は、前記導光板の第1の入射端面と第2の入射端面にそれぞれ光を入射させるように配設され、
前記導光板には、前記第1の入射端面と前記第1の入射端面に対向する対向端面とを除く側面端面と、前記第2の入射端面と前記第2の入射端面に対向する対向端面とを除く側面端面とに、前記第1の入射端面と前記第2の入射端面の入光位置に対して略垂直な辺を持つ斜面群がそれぞれ設けられている
請求項1記載の表示装置。 - 前記導光板における前記斜面群の各々の斜面と前記反射面とのなす角度θkが、
20°< θk <60°
という条件を満たす
請求項1又は2記載の表示装置。 - 前記斜面群を構成する各々の出射面内の各辺の中心と、前記光源からの光が前記導光板に入射されて前記導光板内で仮想光源とみなされる位置とを結ぶ線分を、前記出射面に投影した線分と、
前記斜面群を構成する各出射面内の各辺の垂線と、
のなす角度θp(n)が、
|θp(n)|≦ 40° (n=1,2,・・・)
という条件を満たす
請求項1又は2記載の表示装置。 - 前記導光板における前記対向端面の斜面と前記反射面とのなす角度θtが、
20°< θt <60°
という条件を満たす
請求項1又は2記載の表示装置。 - 前記プリズムの集合体で形成される絵柄の、前記側面端面方向の幅H_bpと、前記導光板の前記側面端面方向の幅H_bと、前記導光板における前記斜面群が形成されていない領域の前記側面端面方向の幅H_byと、前記隠蔽板の前記透光部における前記側面端面方向の幅H_cpとが、
H_b > H_by > H_cp > H_bp
という条件を満たす
請求項1又は2記載の表示装置。 - 前記導光板の前記反射面側に配設され、部分的に光を透過させる光透過性部材と、
前記導光板の前記反射面側で且つ前記光透過性部材よりも離れて配設され、前記導光板の入射端面から光を入射させる前記光源とは別の光源と、
をさらに備えた
請求項1乃至6のうち何れか1つに記載の表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018103811A JP7108839B2 (ja) | 2018-05-30 | 2018-05-30 | 表示装置 |
US16/267,433 US10768354B2 (en) | 2018-05-30 | 2019-02-05 | Display device |
EP19155868.3A EP3575682B1 (en) | 2018-05-30 | 2019-02-07 | Display device |
CN201910119312.7A CN110554453B (zh) | 2018-05-30 | 2019-02-15 | 显示装置 |
Applications Claiming Priority (1)
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---|---|---|---|
JP2018103811A JP7108839B2 (ja) | 2018-05-30 | 2018-05-30 | 表示装置 |
Publications (3)
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JP2019207834A JP2019207834A (ja) | 2019-12-05 |
JP2019207834A5 JP2019207834A5 (ja) | 2021-07-26 |
JP7108839B2 true JP7108839B2 (ja) | 2022-07-29 |
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JP2018103811A Active JP7108839B2 (ja) | 2018-05-30 | 2018-05-30 | 表示装置 |
Country Status (4)
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US (1) | US10768354B2 (ja) |
EP (1) | EP3575682B1 (ja) |
JP (1) | JP7108839B2 (ja) |
CN (1) | CN110554453B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7240728B2 (ja) * | 2019-11-18 | 2023-03-16 | 株式会社ニューギン | 遊技機 |
EP4191123A4 (en) | 2020-07-28 | 2024-08-07 | Nitto Denko Corp | LIGHTING DEVICE |
JP7510627B2 (ja) * | 2020-08-11 | 2024-07-04 | 長崎県 | 表示パネルの製造方法 |
CN116241812A (zh) * | 2021-12-08 | 2023-06-09 | 比亚迪股份有限公司 | 发光组件及移动终端 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000040412A (ja) | 1998-07-22 | 2000-02-08 | Nitto Jushi Kogyo Kk | 複合型光源装置 |
JP2012195115A (ja) | 2011-03-15 | 2012-10-11 | Omron Corp | 面光源装置 |
JP2018081213A (ja) | 2016-11-17 | 2018-05-24 | パナソニックIpマネジメント株式会社 | 表示装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3918281B2 (ja) * | 1998-02-18 | 2007-05-23 | オムロン株式会社 | 面光源装置 |
JP2009204885A (ja) * | 2008-02-28 | 2009-09-10 | Omron Corp | 表示装置 |
CN101738678A (zh) * | 2008-11-26 | 2010-06-16 | 鸿富锦精密工业(深圳)有限公司 | 导光板及显示装置 |
JP5278412B2 (ja) * | 2010-11-17 | 2013-09-04 | オムロン株式会社 | 面光源装置及び立体表示装置 |
JP5883596B2 (ja) * | 2011-08-25 | 2016-03-15 | 林テレンプ株式会社 | 面照明装置 |
US10101519B2 (en) * | 2013-09-30 | 2018-10-16 | Continental Automotive Systems, Inc. | Lighting assembly for display illumination |
JP2016164830A (ja) * | 2015-03-06 | 2016-09-08 | セイコーエプソン株式会社 | 照明装置、表示装置および携帯用電子機器 |
JP6467707B2 (ja) | 2015-03-24 | 2019-02-13 | パナソニックIpマネジメント株式会社 | 表示装置 |
JP2018025634A (ja) * | 2016-08-09 | 2018-02-15 | 株式会社東海理化電機製作所 | 表示パネル |
-
2018
- 2018-05-30 JP JP2018103811A patent/JP7108839B2/ja active Active
-
2019
- 2019-02-05 US US16/267,433 patent/US10768354B2/en active Active
- 2019-02-07 EP EP19155868.3A patent/EP3575682B1/en active Active
- 2019-02-15 CN CN201910119312.7A patent/CN110554453B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000040412A (ja) | 1998-07-22 | 2000-02-08 | Nitto Jushi Kogyo Kk | 複合型光源装置 |
JP2012195115A (ja) | 2011-03-15 | 2012-10-11 | Omron Corp | 面光源装置 |
JP2018081213A (ja) | 2016-11-17 | 2018-05-24 | パナソニックIpマネジメント株式会社 | 表示装置 |
Also Published As
Publication number | Publication date |
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US10768354B2 (en) | 2020-09-08 |
CN110554453B (zh) | 2024-01-16 |
US20190369318A1 (en) | 2019-12-05 |
JP2019207834A (ja) | 2019-12-05 |
EP3575682A1 (en) | 2019-12-04 |
EP3575682B1 (en) | 2021-03-31 |
CN110554453A (zh) | 2019-12-10 |
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