WO2011055847A1 - Panneau d'émission de lumière à deux faces et appareil d'affichage - Google Patents

Panneau d'émission de lumière à deux faces et appareil d'affichage Download PDF

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Publication number
WO2011055847A1
WO2011055847A1 PCT/JP2010/070059 JP2010070059W WO2011055847A1 WO 2011055847 A1 WO2011055847 A1 WO 2011055847A1 JP 2010070059 W JP2010070059 W JP 2010070059W WO 2011055847 A1 WO2011055847 A1 WO 2011055847A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
irradiation surface
light irradiation
reflective dots
substrate
Prior art date
Application number
PCT/JP2010/070059
Other languages
English (en)
Japanese (ja)
Inventor
勝保 湯浅
Original Assignee
株式会社 共栄コーポレーション
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 株式会社 共栄コーポレーション filed Critical 株式会社 共栄コーポレーション
Priority to CN201090001147.8U priority Critical patent/CN202791385U/zh
Publication of WO2011055847A1 publication Critical patent/WO2011055847A1/fr

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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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces 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
    • G02B6/0035—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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0409—Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency
    • 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

Definitions

  • the present invention relates to a double-sided light emitting panel and a display device suitable for using an LED as a light source.
  • LEDs Light Emitting Diodes
  • LEDs have the property that light travels linearly from the light emitting surface toward the front, have a long service life, are power-saving, and are excellent from the viewpoint of environmental protection. It is used for underwater lights and indicator lights (for example, traffic signal lamps).
  • indicator lights for example, traffic signal lamps.
  • problems such as insufficient light emission luminance generated by unit output and insufficient illumination angle, and in the case of using an LED as a light source, a double-sided light emitting panel (light guide plate) that suitably guides irradiated light. Appearance is desired.
  • a light guide plate formed of a light-transmitting transparent acrylic resin substrate and having a plurality of light reflecting means formed by dot printing on the light-irradiating surfaces on both sides, and this guide
  • a display device comprising a display plate for displaying various guides adjacent to the light irradiation surfaces on both sides of the light plate, and an outer frame surrounding the three surfaces of the light guide plate excluding the light source arrangement surface and the light irradiation surfaces on both sides Proposed.
  • the light guide plate it is possible to prevent a decrease in light emission efficiency when the light emitted from the light source is incident on the display plate from the light irradiation surface of the light guide plate.
  • the dot pattern formed by dot printing on both sides of a light-transmitting transparent acrylic resin substrate is simply formed on the side close to the light source and small on the side far from the light source. Since a portion that does not overlap with the dot pattern on the other side is formed (see FIGS. 7 and 8 of the present application), the light irradiation surface simply reflects between a plurality of dot prints formed on both side surfaces.
  • Irradiation light that cannot be transmitted more is generated, and the transmittance of the irradiation light from the light irradiation surface is reduced (or partially reduced), and the luminance from the both surfaces (light irradiation surface) of the light guide plate is not uniform and uneven illumination. Occurs; (2) If the dot print shape is formed in a perfect circle, the light emitted from the light source may not be sufficiently diffused and streaks (dark places) may occur on the display board; There was a problem such as.
  • an object of the present invention is to provide a double-sided light emitting panel and a display device that can uniformly illuminate a light irradiation surface formed by both surfaces of a light guide plate and obtain a light irradiation surface that is uniform in luminance and free from uneven illumination. Is to provide.
  • Another object of the present invention is to form the outer peripheral surface of the dot as a fine rough surface, promote the diffusion of the irradiation light from the light source also by the edge of this rough surface, and the light irradiation facing the reflected light from each dot.
  • the double-sided light emitting panel according to the present invention is formed by a light-transmitting substrate, and a plurality of reflective dots by dot printing are arranged on both surfaces of the substrate so that both surfaces of the substrate are the first light irradiation surface and the second light irradiation surface.
  • the size of the reflective dots formed as the light irradiation surface and formed on the first light irradiation surface and the second light irradiation surface is smaller on the side closer to the LED disposed as the light source on the side surface of the substrate and is farther from the LED
  • the side is a large-sized double-sided light emitting panel, and when viewed from the first light irradiation surface side, the reflective dots formed on the first light irradiation surface and the second light irradiation surface
  • the reflective dots are formed so that the formation positions of the reflective dots do not overlap with each other, the irradiation light of the LED is reflected using each of the reflective dots, and the reflected irradiation light is transmitted from the opposite light irradiation surface.
  • the display device includes an LED that constitutes a light source, a double-sided light-emitting panel that guides irradiation light of the LED, and a diffusion panel that is disposed on both sides of the double-sided light-emitting panel in parallel with the double-sided light-emitting panel.
  • the double-sided light emitting panel is formed of a light transmissive substrate, and a plurality of reflective dots by dot printing are arranged on both surfaces of the substrate, and both surfaces of the substrate are irradiated with a first light.
  • the side close to the LED disposed on the side surface of the substrate is formed as a surface and a second light irradiation surface, and the size of the reflective dots formed on the first light irradiation surface and the second light irradiation surface is
  • the double-sided light emitting panel is formed on the side that is small and far from the LED, and when viewed from the first light irradiation surface side, the reflective dots formed on the first light irradiation surface and the second light emitting panel.
  • the reflective dots formed on the light irradiation surface It is characterized by being formed so as not to overlap with each other, reflecting the irradiation light of the LED using each of the reflection dots, and transmitting the reflected irradiation light from the opposite light irradiation surface to emit light on both sides.
  • the reflective dots are preferably formed so that the outer peripheral surface of the dots is a fine rough surface on which edges are formed, and the edges promote the diffusion of irradiation light.
  • the light reflecting means is formed on both surfaces of the light guide plate, as described above, a large number of light reflecting means are formed on both surfaces of the substrate as reflecting dots, and the formed reflecting dots are close to the LED as the light source.
  • the small and far side of the LED is formed large, but the reflective dots on both sides are formed on the second light irradiation surface corresponding to the space surrounded by the four neighboring reflection dots formed on the first light irradiation surface.
  • the reflective dot of the second light irradiation surface is formed in the center of the first light irradiation surface, and the center of the space of the first light irradiation surface corresponding to the space surrounded by the four neighboring reflection dots formed on the second light irradiation surface is formed.
  • the reflection dots formed on the first light irradiation surface and the reflections formed on the second light irradiation surface Shift so that the dot formation positions do not overlap
  • the reflection dots formed on the second light irradiation surface and the reflection dots formed on the first light irradiation surface do not overlap when viewed from the second light irradiation surface side.
  • the reflective light is used to reflect the irradiation light of the LED, and the reflected irradiation light is transmitted from the opposite light irradiation surface to emit light on both sides.
  • Dot printing can be performed by silk screen printing.
  • the present invention has the following effects. (1) It is possible to obtain a double-sided light emitting panel and a display device that can uniformly illuminate the light irradiation surfaces formed by the both side surfaces of the light guide plate and guarantees the irradiation light without unevenness in brightness and uneven illumination. . (2) In dot printing, the outer periphery of the dot is formed as a fine rough surface, and this fine rough surface promotes the diffusion of the irradiation light, and the reflected light from each dot is averaged and transmitted from the opposite light irradiation surface to transmit soft light. Thus, a double-sided light emitting panel and a display device that can realize irradiation by the above are obtained.
  • a double-sided light emitting panel and a display device that can avoid the intrusion of dust, rainwater, etc. and that do not affect the light emitting surface even when installed outdoors can be obtained.
  • FIG. 1 shows a display device formed using a double-sided light emitting panel according to the present invention.
  • FIG. 2 is a perspective view showing a state in which a main part of a display device formed using the double-sided light emitting panel according to the present invention is separated.
  • FIG. 3 is a diagram showing an example of a dot formation pattern of the double-sided light emitting panel according to the present invention.
  • FIG. 4 is a diagram showing another example of the dot formation pattern of the double-sided light emitting panel according to the present invention.
  • FIG. 5 is an enlarged view of the upper right portion of the pattern diagram shown in FIG.
  • FIG. 6 is an enlarged plan view of one dot formed on the double-sided light emitting panel according to the present invention.
  • FIG. 7 is a diagram showing an example of a dot formation pattern of a conventional double-sided light emitting panel.
  • FIG. 8 is a diagram showing another example of a dot formation pattern of a conventional double-sided light emitting panel.
  • a double-sided light emitting panel (light guide plate) 10 is formed of a light-transmitting substrate, and a plurality of reflective dots by dot printing are arranged on both surfaces of the substrate so that both surfaces of the substrate are first.
  • the light irradiation surface 11 and the second light irradiation surface 12 are formed. That is, a plurality of light reflecting means 14 and 16 are formed as reflecting dots on the light irradiation surfaces 11 and 12 on both surfaces (front surface side and back surface side) of the light guide plate 10.
  • the reflection dot 14 and the reflection dot 16 are formed at positions where they do not overlap each other, and the irradiation light of the LED 3 as a light source is reflected by using the reflection dots 14 and 16 to emit light on both sides.
  • the LED module 1 includes an LED 3 serving as a light source and an LED holder 4.
  • the LED 3 is disposed on the side surface of the substrate.
  • the light guide plate 10 is formed of a light-transmitting transparent acrylic resin substrate or glass substrate, and light-reflecting white dot prints are formed on the light irradiation surfaces 11 and 12 on both surfaces thereof.
  • the light emitting plate is adjacent to the light irradiation surface on which the reflective dots 14 and 16 are formed to increase the luminous efficiency, and the reflective dot pattern of the light guide plate 10 is blurred and diffused to make it inconspicuous (translucent).
  • the diffusion panels 21 and 22 are arranged.
  • the reflective dots 14 and 16 are formed small on the side close to the light source (LED) and large on the side far from the light source. In this case, the reflective dots 14 (14a, 14b, 14n) on one side (front side) and the reflective dots 16 (16a, 16b, 16n) on the other side (back side) are formed so as not to overlap each other. Is essential. That is, in FIG.
  • the reflective dots 14a and 16a have an interval S1
  • the reflective dots 16a and 14b have an interval S2
  • the reflective dots 14b and 16b have an interval S3
  • the reflective dots 16b and 14n have an interval.
  • S4 is formed so that there is an interval S5 between the reflective dots 14n and 16n.
  • the reflection dot 16a3 is arranged at the center of the space on the light irradiation surface 12 side corresponding to the substantially four spaces surrounded by four neighboring reflection dots on the light irradiation surface 11, for example, the reflection dots 14a2, 14a3, 14b2, and 14b3 in FIG.
  • the reflection dot 14b1 is formed in the center of the space on the light irradiation surface 11 side corresponding to the substantially square space surrounded by the reflection dots 16a1, 16a2, 16b1, and 16b2 (the reflection dot is formed on the same plane).
  • each dot is formed so that the reflective dot on the other side is formed in the center of a substantially square space formed by four neighboring reflective dots on the single side. Therefore, ⁇ 1 and ⁇ 2 in FIG. 5 form approximately 90 degrees.
  • Each reflective dot 14 (16) has a slight thickness due to printing, but the outer peripheral surface of the dot is formed as a fine rough surface having an edge 15 (17), and this fine rough surface and the edge 15 (17).
  • LED module 3 LED 4 LED holder 10
  • Light guide plate 11 Light irradiation surface 12
  • Light irradiation surface 14 dots 16 dots 21
  • Diffusion panel 22 Diffusion panel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention porte sur un panneau d'émission de lumière à deux faces, dans lequel panneau des faces de rayonnement de lumière formées par les deux faces latérales d'une plaque de guidage de lumière peuvent être éclairées de façon uniforme, sans dispersion de luminosité ni irrégularité d'éclairage. Le panneau d'émission de lumière à deux faces est constitué par un élément de substrat ayant une perméabilité à la lumière, et une pluralité de moyens de réflexion de lumière sont formés sous la forme de points réfléchissants (14, 16) sur les faces d'irradiation de lumière des deux côtés du substrat par une impression de point. Les points réfléchissants sont formés de telle sorte que les positions de points réfléchissants formés sur un côté sont décalées des positions de points réfléchissants formés sur l'autre côté, de telle sorte qu'il n'y a pas de chevauchement de positions, que la lumière de rayonnement d'une source de lumière est réfléchie à l'aide des points réfléchissants, et que la lumière de rayonnement réfléchie imprègne à travers le côté de face de rayonnement de lumière opposé, provoquant une émission de lumière à deux côtés.
PCT/JP2010/070059 2009-11-03 2010-11-02 Panneau d'émission de lumière à deux faces et appareil d'affichage WO2011055847A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201090001147.8U CN202791385U (zh) 2009-11-03 2010-11-02 两面发光型面板以及显示装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-266804 2009-11-03
JP2009266804A JP2011100701A (ja) 2009-11-03 2009-11-03 両面発光型パネル及び表示装置

Publications (1)

Publication Number Publication Date
WO2011055847A1 true WO2011055847A1 (fr) 2011-05-12

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JP (1) JP2011100701A (fr)
CN (1) CN202791385U (fr)
WO (1) WO2011055847A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797993A (zh) * 2011-05-27 2012-11-28 Lg伊诺特有限公司 照明模块
WO2013068895A1 (fr) * 2011-11-08 2013-05-16 Koninklijke Philips Electronics N.V. Unité d'éclairage comprenant un guide d'ondes
WO2018106348A1 (fr) * 2016-12-09 2018-06-14 Lumileds Llc Guide d'ondes optique à encre à motifs
EP3327494B1 (fr) * 2016-11-28 2022-12-21 ANNAX GmbH Écran double face avec rétroéclairage commun

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5828687B2 (ja) * 2011-06-29 2015-12-09 株式会社エス・ケー・ジー 表示用導光板及び表示用導光板を備えた表示装置
JP7084404B2 (ja) * 2016-12-09 2022-06-14 ルミレッズ リミテッド ライアビリティ カンパニー パターン形成されたインクを有するライトガイド
KR20200144845A (ko) * 2019-06-19 2020-12-30 코닝 인코포레이티드 투명 도광 기판 및 이를 구비하는 조명장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10188642A (ja) * 1996-12-25 1998-07-21 Sony Corp 照明装置
JP2004070189A (ja) * 2002-08-09 2004-03-04 Hitachi Ltd 液晶表示装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008159274A (ja) * 2006-12-20 2008-07-10 Seiko Epson Corp 導光板、導光板成形用金型、導光板成型用金型の製造方法及び導光板の製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10188642A (ja) * 1996-12-25 1998-07-21 Sony Corp 照明装置
JP2004070189A (ja) * 2002-08-09 2004-03-04 Hitachi Ltd 液晶表示装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797993A (zh) * 2011-05-27 2012-11-28 Lg伊诺特有限公司 照明模块
WO2013068895A1 (fr) * 2011-11-08 2013-05-16 Koninklijke Philips Electronics N.V. Unité d'éclairage comprenant un guide d'ondes
JP2014532975A (ja) * 2011-11-08 2014-12-08 コーニンクレッカ フィリップス エヌ ヴェ 導波路を含む照明ユニット
US9733416B2 (en) 2011-11-08 2017-08-15 Philips Lighting Holding B.V. Lighting unit comprising a waveguide
US10042109B2 (en) 2011-11-08 2018-08-07 Philips Lighting Holding B.V. Lighting unit comprising a waveguide
EP3327494B1 (fr) * 2016-11-28 2022-12-21 ANNAX GmbH Écran double face avec rétroéclairage commun
WO2018106348A1 (fr) * 2016-12-09 2018-06-14 Lumileds Llc Guide d'ondes optique à encre à motifs
US10418534B2 (en) 2016-12-09 2019-09-17 Lumileds Llc Light guide with patterned ink
US10680148B2 (en) 2016-12-09 2020-06-09 Lumileds Llc Light guide with patterned ink
US10991860B2 (en) 2016-12-09 2021-04-27 Lumileds Llc Light guide with patterned ink

Also Published As

Publication number Publication date
CN202791385U (zh) 2013-03-13
JP2011100701A (ja) 2011-05-19

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