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WO2010046815A1 - Tuile électroluminescente - Google Patents

Tuile électroluminescente Download PDF

Info

Publication number
WO2010046815A1
WO2010046815A1 PCT/IB2009/054539 IB2009054539W WO2010046815A1 WO 2010046815 A1 WO2010046815 A1 WO 2010046815A1 IB 2009054539 W IB2009054539 W IB 2009054539W WO 2010046815 A1 WO2010046815 A1 WO 2010046815A1
Authority
WO
WIPO (PCT)
Prior art keywords
light emitting
carrier body
tile
oled
colour
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.)
Ceased
Application number
PCT/IB2009/054539
Other languages
English (en)
Inventor
Joseph H. A. M. Jacobs
Dirk Hente
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips Electronics NV
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 Philips Intellectual Property and Standards GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of WO2010046815A1 publication Critical patent/WO2010046815A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/006—General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to a light emitting tile, comprising a transparent carrier body, whereas at least one organic light emitting diode is arranged on at least one surface of the carrier body, in order to emit light with a first colour via at least one of the surfaces. Moreover the present invention is directed to a lighting wall comprising a plurality of light emitting tiles.
  • OLEDs are high potential future light sources, in particular for decorative or atmospheric applications. They are expected to become a high efficiency light source on a large area for a cost effective manufacturing. OLEDs can be applied on walls, furniture, bottoms or on the ceiling of rooms and buildings in general. Moreover, OLEDs can be integrated in windows.
  • OLEDs for atmospheric or decorative elements face some problems, when being applied in creative lighting atmosphere and animation applications.
  • Colour variable OLEDs have a very short lifetime and are unreliable and cost intensive. Normal OLEDs can only emit a light comprising a single colour and an atmospheric pattern can not be generated.
  • the invention has the objective to eliminate the above mentioned disadvantages.
  • the invention discloses that at least one light emitting diode is attached to the carrier body for irradiating light into the carrier body, which subsequently emits via at least one of the surfaces with a colour differing from the colour emitted by said organic light emitting diode.
  • a light emitting tile can be provided with a two-coloured or multi-coloured pattern for atmospheric or decorative applications.
  • OLEDs and LEDs feature a different irradiating characteristic, and in its result the light emitting tile provides an inhomogeneous appearance of light.
  • the inhomogeneous appearance of the emitted light is caused by the different light sources irradiating light into the carrier body along different axis as to create a colour mixture.
  • the LEDs are arranged at least one edge of the carrier body to irradiate light into the carrier body.
  • light is irradiated into the carrier body by the OLED as well as by the at least one LED.
  • the light irradiated into the carrier body by the LED subsequently emits via at least one of the surfaces of the carrier body, whereas the emitted light via the at least one surface of the carrier body is superimposed by the light, generated by the OLED, which is as well as the light of the LED irradiated into the carrier body.
  • a light emitting tile with an atmospheric pattern can be applied for decorative applications emitting a composite of light.
  • said carrier body features a flat extension and/or a free shaped 2D- or 3D form and preferred a rectangular flat form, whereas a plurality of said light emitting diodes are preferred arranged on opposite edges of the carrier body.
  • the carrier body can be performed with LEDs on its whole circumference.
  • the shape of said tile is not limited to a rectangular form, but the tile may be performed as a quadrate or it features an orbital, a triangular or any different shape in 2D or 3D formation.
  • the tile can be preformed as a 3D- volume body, and the arrangement of the at least one OLED and the at least one LED is not limited to one side of the volume body.
  • preferred said tile comprises a flat and planar form with a flexible or rigid body like a tile, applied on a wall.
  • said carrier body forms a glass ball or cube body or a free shaped body, which is free shaped or which is geometrically defined.
  • Yet another embodiment of the present invention provides a plurality of light emitting diodes, which preferably are arranged equally spaced to each other on at least one and preferred on two edges of said carrier body.
  • said LEDs may be arranged in groups on the edges or inside any surface of said carrier body According to yet another embodiment said LEDs may be arranged only at the corners of the body, depending on the desired pattern to be generated and which has to be provided by the light emitting tile.
  • the LEDs arranged on a first edge of the carrier body may emit a light with a first colour, which is different to the colour of the light, emitted by the LEDs arranged on the opposite edge of the carrier body.
  • a third colour emitted by the OLED an atmospheric light is provided by the tile.
  • Said three colours can result in a colour mixture, whereas by applying an additive mixture of colours a plurality of different colours can be generated.
  • light emitting diodes providing at least two different colours.
  • the light emitting tile according to the present invention is not limited to a colour separation with a first edge of the carrier body, which is provided with LEDs emitting light with only a first colour and a second edge with LEDs emitting light with only a second colour.
  • the LEDs can be mixed in colour at each separate edge of the carrier body.
  • the arrangement of the LEDs on only one edge may comprise LEDs with a first and with a second colour which are arranged in an alternating manner.
  • yellow and blue LEDs may be arranged in one line at one edge of the carrier body.
  • the emitted light is a yellow light
  • the blue LEDs are switched on
  • the emitted light is blue light.
  • the present invention is also embodied in light emitting diodes, which are performed as multicolour- LEDs, each suited to emit at least two different colours.
  • So called multicolour- LEDs can emit light with at least two different colours. These multicolour- LEDs can be arranged on each edge of the carrier body or said LEDs are arranged within one surface of the carrier body in order to generate light points or light areas, preferred suited for emitting different colours.
  • said LEDs may emit light with multiple colours, in order to provide a multiple coloured pattern of the light emitting tile.
  • a wave structure moved patterns and shifting colour areas and shifting brightness can be performed by the light emitting tile.
  • a multi colour mixture can be performed, whereas on the surface of the carrier body can be applied more than one OLED, whereas said OLEDs may be operated by a special control unit simultaneously or individual.
  • the LEDs can be arranged to the carrier body as single LEDs or as LED arrays, emitting a single colour or a composition of different colours.
  • a cover substrate is arranged on the top side of the organic light emitting diode (OLED).
  • the cover substrate can be performed as a reflecting substrate to perform the tile as a single- side light emitting tile or the cover substrate is performed as a transparent substrate to perform the tile as a double side emitting tile, when the layer system and in particular the electrodes of the OLEDs, namely the anode and the cathode, are performed transparently.
  • This kind of OLEDs are known as transparent OLEDs.
  • cover substrate may comprise a material, which is deposited onto the at least one OLED as a protecting layer or cover element is performed as a cover element which covers the carrier body and the deposited OLEDs like a closure cap in an offset mounted manner.
  • the entire tile can be rigid or flexible, whereas when the tile is flexible, it can be used like a "lighting curtain".
  • the organic light emitting diode comprises at least one cathode layer and at least one anode layer and at least one organic layer system sandwiched between said cathode layer and said anode layer.
  • the OLED itself is sandwiched between the carrier body and the cover substrate, whereas the cover substrate protects the OLED against moisture and damaging.
  • Said anode layer can be performed as an ITO-electrode and the cathode layer can be performed as an aluminium- layer.
  • the organic layer system may comprise at least a hole injection layer, an electron blocking layer, an emitting layer, a hole blocking layer and/or an electron transporting layer.
  • the light emitting tile can comprise one single OLED or more than one OLED on each side of the carrier body.
  • the OLED can be performed as an OLED system, which system may comprise an anode layer and a cathode layer, and in between said anode layer and cathode layer may be sandwiched a plurality of emitting layers for emitting light with different colours, e.g. a blue, a green and a red light emitting layer.
  • the anode layer may be made of an ITO-layer (Indium Tin Oxide- layer) and can be arranged next to the cover substrate, whereas the cathode layer may be made of an aluminium layer, which can be arranged adjacent to the carrier body.
  • the emitted light is a composition of the single emissions of light within the layer compound.
  • a different structure of the emitting layers can be patterned layers, e.g. comprising stripe structured layers.
  • the stripes may be arranged parallel to each other in an alternating manner, and can emit e.g. a blue and a yellow light, whereas the layers can emit the light simultaneously or separately.
  • two or more OLEDs can be stacked onto each other with or without glass substrates in between the layer systems.
  • the OLEDs can be driven in a series connection or in a parallel connection.
  • an electrode layer of a first OLED can be simultaneously used as an electrode layer of a neighbouring OLED.
  • one single electrode layer can simultaneously be an anode layer and a cathode layer.
  • the intermediate layers of electrodes are performed as charging layers. These intermediate electrodes can be connected to different voltage potentials, in order to provide discrete voltages to the different OLEDs.
  • the carrier body and/or the cover substrate may comprise an outcoupling surface, which is structured by sand blasting or by etching in at least one outcoupling area.
  • the structuring or the application of an outcoupling foil can improve the outcoupling of the light and in particular the areas can be defined, in which the light couples out of the carrier body.
  • the light outcoupling area can represent letters, graphics or symbols, which appear in a lighting manner.
  • the entire surface may feature the structuring and/or the foil.
  • the tile comprises a thickness of less than 10 mm, preferred less than 5 mm and most preferred less or equal 2 mm.
  • Within the carrier body can be arranged scattering centres for scattering the irradiated light, in order to influence the light appearance of the lighting tile.
  • the scattering centres may be positioned in local areas or within the entire carrier body with a homogenous or carrying density.
  • the present invention is also directed on a lighting wall comprising a plurality of light emitting tiles.
  • a lighting tile system may be provided comprising at least one light emitting tile with an electrical control unit, whereas said electrical control unit is performed to control the at least one organic light emitting diode (OLED) and the at least one light emitting diode (LED), either separately or in a common mode.
  • OLED organic light emitting diode
  • LED light emitting diode
  • the electrical control unit may be performed to create lighting patterns by controlling the colour and/or the brightness of the at least one organic light emitting diode (OLED) and/or the at least one light emitting diode (LED).
  • OLED organic light emitting diode
  • LED light emitting diode
  • Figure 1 shows an embodiment of the inventive light emitting tile in a cross sectional view
  • Figure 2 shows a top view of the embodiment of a light emitting tile according to figure 1 with a colour-separated arrangement of LEDs at the opposite edges of the carrier body
  • Figure 3 shows another embodiment of arranging coloured LEDs on the edges of the carrier body in an alternating manner with different colours on each edge, whereas scattering centres are shown
  • Figure 4 shows a cross sectional view of the light emitting tile comprising an outcoupling area in the outcoupling surface of the carrier body
  • Figure 5 shows another embodiment of the outcoupling surface of the carrier body with an applied outcoupling foil.
  • FIG. 1 shows an embodiment of a light emitting tile 1 according to the present invention.
  • the light emitting tile 1 is depicted in a cross section and comprises a transparent carrier body 2, which features a flat extension and can be made of glass or alternatively a flexible synthetic material.
  • Said carrier body 2 is shaped rectangular and features an upper surface 2a and a lower surface 2b.
  • an organic light emitting diode (OLED) 3 which comprises a layer system, deposited on said upper surface 2a of the carrier body 2.
  • the layer system of said OLED 3 comprises at least a cathode layer 7 and an anode layer 6, whereas an organic layer system 8 is sandwiched between said cathode layer 7 and said anode layer 6.
  • the organic layer system 8 can emit light across the entire surface of the OLED 3.
  • the light generated by the OLED 3 irradiates into the carrier body 2 and can be coupled out by passing the lower surface 2b of the carrier body 2 working as an illuminating surface 2b.
  • a cover substrate 5 On the top of the OLED 3 is arranged a cover substrate 5, in order to protect the OLED 3 against oxidation, damaging and moisture.
  • the two-dimensional carrier body 2 is bordered by edges, whereas a left and a right edge is shown in the cross sectional view.
  • On the edges are arranged light emitting diodes (LED), whereas on the left edge is applied a light emitting diode 4a and on the right edge is applied a light emitting diode 4b.
  • the LEDs 4a and 4b are enclosed within a case 11, whereas within one case 11 the plurality of LEDs 4a and 4b may be enclosed.
  • the LEDs 4a and 4b irradiate light into the carrier body 2, which is indicated by arrows.
  • FIG. 2 shows a top view of the embodiment of the light emitting tile 1 according to figure 1.
  • the light emitting tile 1 is formed by a carrier body 2, whereas on the top surface of the carrier body 2 an OLED 3 is applied.
  • a plurality of light emitting diodes (LEDs) 4a and 4b are applied on the left and on the right edge of the carrier body.
  • LEDs light emitting diodes
  • the left side light emitting diodes 4a emitting a light with a first colour are applied.
  • On the right edge are applied a plurality of light emitting diodes 4b, emitting light with a second colour differing from the first colour emitted by the LEDs 4a on the left edge.
  • the light emitting tile 1 Combined with the light, emitted by the OLED 3 the light emitting tile 1 generates a smooth colour transition from the left side to the right side.
  • the left side arranged LEDs 4a may emit blue light whereas the LEDs 4b on the right side can emit red light and across the entire surface of the carrier body 2 a smooth transition between blue and red light appears.
  • Figure 3 shows another embodiment of the arrangement of the light emitting diodes 4a and 4b at the edges of the carrier body 2.
  • the light emitting diodes 4a and 4b are arranged in an alternating manner.
  • the LEDs 4a emit light with a colour differing from the colour of the light emitted by the LEDs 4b
  • the colour transition happens between the LEDs 4a and 4b independent from the edge of the carrier body 2.
  • scattering areas In the surface of the tile 1 are shown scattering areas, in which scattering centres 12 are arranged.
  • the light, irradiated into the carrier body, features a scattering, caused by said scattering centres 12, applied within the material of the carrier body 2. This leads to another emitting distribution of the light, emitting via the outcoupling surface 2b.
  • the light couples out of the carrier body 2 in these areas. In its result these scattering centres increases the inhomogeneous outcoupling behaviour of the light.
  • Figure 4 shows a cross section of a light emitting tile 1 with a carrier body 2, whereas on the lower surface 2b of the carrier body 2 is shown an outcoupling area 9.
  • the outcoupling area 9 is generated by a partially structured surface 2b, whereas the structuring can e.g. be performed by sand blasting or etching.
  • the cover substrate 5 can be transilluminated to.
  • the light emitting tile 1 can be performed as a double side light emitting tile 1. That means that the outcoupling area 9 can also be applied on the cover substrate 5.
  • Figure 5 shows a light emitting tile 1 with another outcoupling arrangement of the lower outcoupling surface 2b of the carrier body 2.
  • the light generated by the OLED 3 and the light emitting diodes 4a and 4b can be coupled out via the outcoupling surface 2b on which an outcoupling foil 10 is applied.
  • the foil is e.g. glued onto the outcoupling surface 2b and can represent graphics, symbols and/or letters.
  • the LEDs 4a and 4b can be arranged in separated manner and are not arranged closed to the of the carrier body 2, e. g. the light can be guided to the edges of the carrier body 2 via light fibres.
  • the fibres may couple out a light into the carrier body 2, whereas the outcoupling may be performed by a prism- structure within the light fibre to generate a line-outcoupling effect along the edge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L’invention concerne une tuile électroluminescente (1), comprenant un corps de support transparent (2), tandis qu’au moins une diode organique électroluminescente (DELO) (3) est disposée sur au moins une surface (2a, 2b) du corps de support (2), afin d’émettre une lumière dotée d’une première couleur par le biais d’au moins une des surfaces (2a, 2b), tandis qu’au moins une diode électroluminescente (4a, 4b) est fixée au corps de support (2), exposant la lumière à l’intérieur du corps de support (2) et émettant ultérieurement par le biais d’au moins une des surfaces (2a, 2b) une couleur différente de la couleur émise par ladite diode organique électroluminescente (DELO) (3).
PCT/IB2009/054539 2008-10-23 2009-10-15 Tuile électroluminescente Ceased WO2010046815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08167348 2008-10-23
EP08167348.5 2008-10-23

Publications (1)

Publication Number Publication Date
WO2010046815A1 true WO2010046815A1 (fr) 2010-04-29

Family

ID=41426964

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/054539 Ceased WO2010046815A1 (fr) 2008-10-23 2009-10-15 Tuile électroluminescente

Country Status (1)

Country Link
WO (1) WO2010046815A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364209A (zh) * 2011-08-08 2012-02-29 南京第壹有机光电有限公司 一种可旋转式oled与led复合灯具
US10018343B2 (en) 2012-06-26 2018-07-10 Num Lighting Ltd. Modular light system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006005427U1 (de) * 2006-04-04 2006-06-08 Emde, Thomas Beleuchtungsvorrichtung
DE202006005428U1 (de) * 2006-04-04 2006-06-22 Emde, Thomas Beleuchtbare Fliese
WO2007115736A1 (fr) * 2006-04-04 2007-10-18 Thomas Emde Système de plaque lumineux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006005427U1 (de) * 2006-04-04 2006-06-08 Emde, Thomas Beleuchtungsvorrichtung
DE202006005428U1 (de) * 2006-04-04 2006-06-22 Emde, Thomas Beleuchtbare Fliese
WO2007115736A1 (fr) * 2006-04-04 2007-10-18 Thomas Emde Système de plaque lumineux

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102364209A (zh) * 2011-08-08 2012-02-29 南京第壹有机光电有限公司 一种可旋转式oled与led复合灯具
US10018343B2 (en) 2012-06-26 2018-07-10 Num Lighting Ltd. Modular light system

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