WO2012005045A1 - Dispositif d'éclairage et procédé de fabrication associé - Google Patents

Dispositif d'éclairage et procédé de fabrication associé Download PDF

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Publication number
WO2012005045A1
WO2012005045A1 PCT/JP2011/059958 JP2011059958W WO2012005045A1 WO 2012005045 A1 WO2012005045 A1 WO 2012005045A1 JP 2011059958 W JP2011059958 W JP 2011059958W WO 2012005045 A1 WO2012005045 A1 WO 2012005045A1
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WIPO (PCT)
Prior art keywords
cord
light emitting
organic
lighting
light
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PCT/JP2011/059958
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English (en)
Japanese (ja)
Inventor
秀謙 尾方
山田　誠
岡本　健
勇毅 小林
悦昌 藤田
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シャープ株式会社
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Publication of WO2012005045A1 publication Critical patent/WO2012005045A1/fr

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/90—Assemblies of multiple devices comprising at least one organic light-emitting element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED

Definitions

  • the present invention relates to a lighting device including a cord having a wiring function, and a manufacturing method thereof.
  • organic EL elements light source devices using organic electroluminescence elements
  • a light source device using an organic EL element has various excellent characteristics such as self-emission, wide viewing angle, and high-speed response.
  • An organic EL element generally has a structure in which an organic layer having a light emitting layer is disposed between a first electrode (anode) that is a transparent electrode and a second electrode (cathode) that is a reflective electrode. It is provided above.
  • the organic layer generally has a hole transport layer, an electron transport layer, and the like.
  • An organic EL element is an element that emits light by such a mechanism.
  • the type that extracts light emitted from the organic EL element from the first electrode and the transparent substrate side is called a bottom emission type, and conversely, the type that extracts light emitted from the organic EL element from the second electrode side is called a top emission type.
  • an organic EL element In using an organic EL element for a light source device, a large area of the organic EL element is required.
  • a vacuum process is mentioned as one of the manufacturing methods of the organic EL element, but it is difficult to produce a large organic EL element in the vacuum process. This is because it is technically difficult to produce an organic EL element using a large substrate, and enormous tact time is required.
  • the cost for introducing a manufacturing apparatus for producing a large organic EL element and the running cost of the manufacturing apparatus are high. In particular, there are no reports on the production of organic EL elements on the 8th and 10th generation substrates.
  • the blind type illumination device is a device having an illumination function in addition to a so-called blind (sometimes referred to as a screen) function capable of adjusting the amount of light collected by being installed in a window.
  • FIG. 15 is a perspective view of a main part for explaining the configuration of the blind device disclosed in Patent Document 1.
  • the blind device 100 is a horizontal blind in which a large number of slats 102 shown in FIG. 15 are horizontally arranged. Each slat 102 is connected to a winding string 109 so that each slat 102 can be rolled up.
  • a ladder cord 108 is coupled to the slat 102 and is configured to be rotatable forward and backward.
  • the slat 102 emits light when a solar cell 103 that converts solar energy into electric energy, a sheet-like polymer secondary battery 104 that stores the electric energy converted by the solar cell 103, and a voltage supply from the sheet-like polymer secondary battery 104.
  • the sheet-like surface light emitter 105 to be laminated has a three-layer structure in which these are laminated in this order.
  • the solar cell 103 includes a terminal for directly converting light energy into electric energy and storing the converted electric energy in the sheet-like polymer secondary battery 104.
  • the sheet-like polymer secondary battery 104 has a solid electrolyte made of a solid polymer, accumulates the electric energy converted by the solar cell 103, and supplies the accumulated electric energy to the sheet-like surface light emitter 105. Terminal.
  • the sheet-like surface light emitter 105 is an organic EL element or the like that uses an organic thin film for an electroluminescent layer.
  • the sheet-like surface light emitter 105 is provided with a terminal for receiving voltage supply, and emits light when supplied with the electrical energy accumulated from the sheet-like polymer secondary battery 104.
  • an electric wire 106 for sending a signal for controlling light emission of the sheet-like surface light emitter 105 is disposed on the short side of the slat 102, and each electric wire 106 is connected to a switch 107. Has been.
  • Such a blind device 100 is installed in the vicinity of the indoor window side, the solar cell 103 side of each slat 102 is disposed in a direction in which sunlight can be received, and the solar energy of the received sunlight is converted into electrical energy. Is stored in the sheet-like polymer secondary battery 104, and light is emitted by supplying a voltage to the sheet-like surface light emitter 105.
  • Japanese Patent Publication Japanese Patent Laid-Open No. 2001-82058 (published on March 27, 2001)
  • the winding string 109 that supports each slat, the wiring 106 that applies voltage to each slat 102, and the ladder cord are provided separately. Yes. If these are separate bodies, not only the configuration becomes complicated, but especially when paying attention to the illumination function, the winding cord 109, the wiring 106, and the ladder cord are all members directly related to illumination. Therefore, it is not desirable that a large number of such configurations are disposed, because the illumination is disturbed.
  • the wiring 106 is provided in the vicinity of the short side of the slat 102. As shown in FIG. 15, since the wiring 106 is provided only at one end of the slat 102, the distance between the wiring 106 and the conductive member (electrode) in the slat 102 becomes long and a voltage drop phenomenon occurs. Such a voltage drop phenomenon causes light emission spots.
  • the blind illumination device of Patent Document 1 shown in FIG. 15 is configured to emit light based on solar energy of sunlight, it is easily affected by the external environment such as weather, and stable power supply is difficult. .
  • the present invention has been made in view of the above-described conventional problems, and its purpose is to sufficiently function as illumination while functioning as a blind, and an illumination device capable of easily realizing a large-area illumination apparatus, And providing a manufacturing method thereof.
  • the lighting device A plurality of strip-shaped lighting panels each having an electrode and a light-emitting element that emits light when voltage is supplied to the electrode;
  • the winding cord is disposed along the arrangement direction, A winding cord configured to be able to adjust the length of the array;
  • a support cord that varies the surface angle of the lighting panel while supporting the plurality of lighting panels;
  • a lighting device comprising: The support cord includes a first cord disposed along the arrangement direction on one long side of two long sides facing each other along the major axis direction of each lighting panel, and the first cord A pair of cords, and a second cord disposed along the arrangement direction on the other long side of the two long sides, The first cord and the second cord both have conductivity, and the first cord, the conductive portion of the second cord, and the electrode provided in the light emitting element are electrical
  • the electrodes of the light-emitting element are an anode and a cathode
  • the light emitting element is The anode and a connection for electrically connecting the anode and the first cord to the one long side of the lighting panel where the first cord of the support cord is disposed Part is provided,
  • the cathode, and the connection for electrically connecting the cathode and the second cord to the other long side of the lighting panel where the second cord of the support cord is disposed It is characterized in that a part is provided.
  • the plurality of lighting panels are held by the winding cord. Further, the length of the winding cord can be changed. By changing the length of the winding cord, the length of the arranged lighting panels can be adjusted. Specifically, the winding cord has a variable length by being wound or fed by an instrument such as a rod.
  • the multiple lighting panels are supported by a support cord.
  • the support cord can be moved by an instrument such as a rod to vary the surface angle of the lighting panel relative to a certain direction.
  • This support cord corresponds to a ladder cord used in a general blind device.
  • the arrangement position of each lighting panel can be adjusted by an instrument. Specifically, the arrangement position and the inclination of the plurality of lighting panels can be adjusted by moving the winding cord and the support cord with the instrument.
  • a rod or the like can be applied as the above-mentioned instrument.
  • a notable configuration is such that the support cord can supply a voltage to the electrode of the light emitting element, and the positive voltage is applied to the first cord.
  • the negative voltage is applied to the second cord. That is, the support cord also has a wiring function.
  • a support cord that supports each lighting panel and a wiring cord that applies a voltage to each lighting panel are provided separately and outside the short side of the lighting panel. Since only one place is provided at the end of the panel as a wiring, a voltage drop phenomenon may occur and light emission spots may be generated.
  • a wiring function for supporting the lighting panel and supplying power to each lighting panel is added to the support cord that changes the inclination.
  • the lighting panel is configured to electrically connect the anode and the first cord to the one long side of the lighting panel in which the first cord of the support cord is disposed.
  • the cathode and the second cord are electrically connected to the other long side of the lighting panel on which the second cord of the support cord is disposed.
  • the cathode side connection part for connecting to is provided.
  • a light-emitting element using an organic EL or the like has a configuration in which positive and negative (positive / negative) electrodes are arranged above and below a light-emitting layer, and light is emitted by passing a current between the electrodes. Since light emission is extracted from one side in the vertical direction, it is necessary to use a transparent electrode such as an oxide at least for the electrode on the light extraction side.
  • the conductivity of a transparent electrode such as an oxide is lower than that of a metal electrode such as Al. For this reason, as the transparent electrode is separated from the contact portion with the power supply wiring, the voltage drop due to the resistance of the electrode increases, and thus the light emission luminance decreases.
  • a transparent electrode such as an oxide
  • a metal electrode such as Al
  • the manufacturing method of the illuminating device concerning this invention
  • a plurality of strip-shaped lighting panels each having an electrode and a light-emitting element that emits light when voltage is supplied to the electrode;
  • a winding cord disposed along the arrangement direction, A winding cord configured to be able to adjust the length of the array;
  • a support cord that varies the surface angle of the lighting panel while supporting the plurality of lighting panels;
  • a method of manufacturing a lighting device comprising: A lighting panel forming step for forming the lighting panel in which the light emitting element is disposed; Preparing a support cord having conductivity, and including a connecting step of connecting a conductive portion of the support cord and the electrode of the light emitting element; In the connection step, a first cord disposed along the arrangement direction on one long side of two long sides facing each other along the long axis direction of the arranged lighting panels
  • the wiring function for supplying power to each lighting panel is added to the support cord that changes the inclination of the plurality of lighting panels. Accordingly, it is possible to avoid blocking the light emission of the lighting panel by the wiring cord as compared with the case where a wiring cord is separately provided, and the room where the lighting device is installed can be illuminated with high illuminance.
  • the lighting panel forming step includes an organic electroluminescent element forming step of forming, as the light emitting element, an organic electroluminescent element in which at least an anode, an organic layer including a light emitting region, and a cathode are formed in this order on the substrate.
  • the organic electroluminescence element is preferably formed by a roll-to-roll method.
  • an integrated illumination device having a large area can be realized, and the manufacturing cost can be kept low.
  • the lighting device of the present invention is as described above.
  • a plurality of strip-shaped lighting panels each having an electrode and a light-emitting element that emits light when voltage is supplied to the electrode;
  • the winding cord is disposed along the arrangement direction,
  • a winding cord configured to be able to adjust the length of the array;
  • a support cord that varies the surface angle of the lighting panel while supporting the plurality of lighting panels;
  • a lighting device comprising:
  • the support cord includes a first cord disposed along the arrangement direction on one long side of two long sides facing each other along the major axis direction of each lighting panel, and the first cord A pair of cords, and a second cord disposed along the arrangement direction on the other long side of the two long sides,
  • the first cord and the second cord both have conductivity, and the first cord, the conductive portion of the second cord, and the electrode provided in the light emitting element are electrically connected.
  • the electrodes of the light-emitting element are an anode and a cathode
  • the light emitting element is The anode and a connection for electrically connecting the anode and the first cord to the one long side of the lighting panel where the first cord of the support cord is disposed Part is provided,
  • the cathode, and the connection for electrically connecting the cathode and the second cord to the other long side of the lighting panel where the second cord of the support cord is disposed It is characterized in that a part is provided.
  • the support cord supporting each lighting panel has a function as wiring for supplying power to each lighting panel. Therefore, it is not necessary to lay dedicated wiring, and the wiring cord can illuminate the room where the lighting device is installed without blocking the light emitted from the lighting panel, and can increase the high illuminance.
  • the range of designs is widened and can be diversified. This configuration enables low-cost manufacturing of the lighting device.
  • a large-area integrated lighting device can be realized by mounting a plurality of small light-emitting elements (organic EL elements), and the manufacturing cost can be reduced. .
  • FIG. It is a figure which shows the cross section of the organic electroluminescent illuminating device which has arrange
  • An organic EL lighting device that can indirectly illuminate by arranging a top emission type organic EL element on a first substrate according to an embodiment of the present invention and extracting light reflected from the reflective second substrate.
  • FIG. 6 illustrates an alternative form of one embodiment of the present invention.
  • FIG. 6 illustrates another alternative form of one embodiment of the present invention. It is a figure which shows a prior art.
  • organic electroluminescence lighting device (hereinafter referred to as an organic EL lighting device), which is an embodiment of a lighting device according to the present invention, will be described.
  • the organic EL lighting device is a blind type lighting device, and in addition to being able to adjust the amount of light collected by the inclination angle of the slats (blades) in the same manner as a general blind (device), Since the slat is a lighting panel having a light emitting function, it can also be used as a lighting device. Therefore, the organic EL lighting device according to the present embodiment includes, for example, office lighting, store lighting, facility lighting, stage lighting, stage lighting, outdoor lighting, house lighting, display lighting (amusement equipment, pachinko machines, vending machines, or Refrigerated / refrigerated showcase, etc.), equipment / furniture built-in lighting, evacuation guidance lighting, or local lighting.
  • FIG. 1 is a perspective view showing a configuration of an organic EL lighting device.
  • the organic EL lighting device 1 of the present embodiment shown in FIG. 1 includes a head box 2, a lifting / lowering cord (winding cord) 3, a bottom rail 4, a branch wiring 5, a ladder cord (supporting cord). ) 6, a rod (instrument) 7, and a lighting panel 10.
  • the lighting panel 10 corresponds to the slat (blade) described above.
  • the organic EL lighting device 1 according to the present embodiment is a type in which each lighting panel 10 is suspended horizontally (horizontal), that is, a Venetian type lighting device.
  • the organic EL lighting device is a type in which each lighting panel 10 is suspended horizontally (horizontal), that is, a Venetian type lighting device, but is not necessarily limited thereto.
  • a vertical type in which each lighting panel 10 is suspended vertically (vertical) can be employed.
  • a plurality of lighting panels 10 can be slid and wound up to the left and right (horizontal direction).
  • the angle (rotation angle) of the said lighting panel 10 can be adjusted by rotating each lighting panel 10 right and left, and the organic EL lighting device 1 can be made into direct illumination or indirect illumination.
  • a cord corresponding to the lifting cord 3 of the Venetian type is called a drive cord, and a vertically held blade (vertical) corresponding to the Venetian type slat (lighting panel 10 held horizontally).
  • the lighting panel 10) held in the box is called a louver.
  • the plurality of lighting panels 10 arranged in parallel are suspended and held by the lifting cord 3 extending from the head box 2.
  • the plurality of lighting panels 10 are maintained in a state of being aligned in parallel in the longitudinal direction by being suspended by the lifting / lowering cord 3.
  • FIG. 2 is a perspective view showing the positional relationship between one lighting panel 10, the lifting / lowering cord 3 and the ladder cord 6.
  • the lifting / lowering cords 3 are respectively disposed on one end side and the other end side in the major axis direction of the strip-shaped lighting panel 10.
  • this invention is not limited to this, The raising / lowering cord 3 should just be provided in the outer periphery of the illumination panel 10 at least.
  • the ladder code 6 shown in FIG. 2 has a function of supporting each lighting panel 10.
  • the ladder cord 6 bridges the pair of the first cord 6a and the second cord 6b extending from the head box 2 to the bottom rail 4 and the first cord 6a and the second cord 6b. And a plurality of third cords 6c provided.
  • the first cord 6a and the second cord 6b are provided to face each other so as to sandwich the short axis of the strip-shaped lighting panel 10.
  • the ladder cord 6 is disposed at a predetermined distance between the pair of first cord 6 a and second cord 6 b along the long axis direction of the lighting panel 10. It is the structure provided with multiple. That is, on one long side of two long sides facing each other along the long axis direction of each lighting panel 10, a plurality of first cords 6a are arranged with a predetermined interval along the arrangement direction. It is installed. A plurality of second cords 6b are arranged at a predetermined interval along the arrangement direction on the other long side of the two long sides.
  • the first cord 6a is paired with the center of the end side along the long axis direction in the lighting panel 10 and the right side and the left side with the short axis of the lighting panel 10 in between. And a second cord 6b.
  • the third cord 6c extends just along the short axis of the lighting panel 10, and each lighting panel 10 is supported by being placed on each third cord 6c.
  • the lighting panel 10 is supported at a total of three locations, the center and the right side and the left side across the center.
  • the lifting / lowering cord 3 and the ladder cord 6 are connected to a rod 7 in the head box 2.
  • the rod 7 is an example of an instrument that winds the lifting cord 3. It goes without saying that the organic EL lighting device 1 can adopt not only a multi-rod type but also a cord and rod type or a cord type. Furthermore, not only a manual switching method using the rod 7, but also an electric operation method such as a remote wireless operation using a switch or a remote controller or a sensitive operation method using a sensor or the like is naturally included.
  • the lifting / lowering cord 3 is rolled up in the vertical direction.
  • the bottom rail 4 and the plurality of lighting panels 10 is also wound up, and the arrangement length of the arranged lighting panels 10 group (length of the arranged portion) can be shortened.
  • the arrangement positions of the plurality of lighting panels 10 can be adjusted.
  • the surface angle of each lighting panel 10 with respect to a certain direction can be changed. Specifically, when the first cord 6a or the second cord 6b shown in FIG. 2 is slightly wound up or fed out, the inclination angle of the third cord 6c changes, and the third cord 6c The surface angle (tilt angle) of the illuminating panel 10 that is supported can be changed by placing it on the cord 6c.
  • the lifting / lowering cord 3 passes through the outer periphery of each lighting panel 10.
  • the illumination panel 10 is merely placed on the ladder cord 6, and the illumination panel 10 and the ladder cord 6 are merely connected to each other by the branch wiring 5. Therefore, the illumination panel 10 is not fixed to the lifting / lowering cord 3 and the ladder cord 6. Therefore, it is possible to incline the illumination panel 10 up and down by moving the ladder cord 6 with the grip 21 at the tip of the rod 7 to rotate the illumination panel 10 and adjusting the rotation angle.
  • each lighting panel 10 can be rolled up by pulling the grip 21 at the tip of the rod 7.
  • the ladder code 6 will be described in further detail as follows.
  • the first cord 6 a and the second cord 6 b of the ladder cord 6 are configured so that a voltage or a current can be supplied to the electrodes of the organic EL elements provided in the lighting panel 10. That is, the first cord 6 a and the second cord 6 b of the ladder cord 6 have conductivity and are connected to an AC commercial power source (not shown) provided in the head box 2.
  • the positive voltage obtained by converting the AC commercial power source into DC is applied to the first cord 6a
  • the negative voltage obtained by converting the AC commercial power source into DC is applied to the second cord 6b. It is comprised so that it may be applied.
  • a branch wiring 5 is connected to the conductive portions of the first cord 6a and the second cord 6b, and this branch wiring 5 is electrically connected to the electrode of the organic EL element. It is a connected configuration.
  • the third cord 6c does not need to have conductivity.
  • the contact between the first cord 6a and the branch wiring 5 and the contact between the second cord 6b and the branch wiring 5 may be fixed as long as they are electrically connected, or slide.
  • it may be movable. If the contact is fixed, power supply from the ladder cord 6 to the lighting panel 10 is stabilized.
  • the contact by configuring the contact so as to be movable, the lighting panel 10 can be slid when the plurality of lighting panels 10 are put together.
  • first cord 6a and the second cord 6b of the ladder cord 6 and the branch wiring 5 are provided with a cover made of plastic or the like so as not to touch and short-circuit other wiring. .
  • the first cord 6a and the second cord 6b of the ladder cord 6 have a structure in which a conductive wire such as copper is covered with an insulating chemical fiber.
  • FIG. 3 is a schematic view showing a configuration of a part of the illumination panel 10
  • FIG. 4 is a cross-sectional view taken along the line AA ′ showing the illumination panel 10 shown in FIG. It is.
  • FIG. 4 shows the lifting / lowering cord 3 and the first cord 6a (or the second cord 6b) of the ladder cord 6 (FIG. 1) in addition to the lighting panel 10. .
  • the illumination panel 10 is obtained by covering the organic EL panel 10 ′ shown in FIG. 3 with a second substrate.
  • FIG. 3 does not show the second substrate.
  • the organic EL panel 10 ′ shown in FIG. 3 has two organic EL elements 20 arranged on the first substrate 17.
  • FIG. 3 shows a configuration in which the two organic EL elements 20 are arranged on the first substrate 17, but the present invention is not necessarily limited thereto.
  • one organic EL element 20 or three or more organic EL elements 20 may be arranged on the first substrate 17.
  • the lifting / lowering cord 3 is arranged at a location other than the center of the lighting panel 10 in order to take a large light emitting area of the lighting panel 10.
  • the lighting panel 10 includes a first substrate 17 having a plurality of organic EL elements 20 and a second substrate 18 disposed so as to face the first substrate 17.
  • the first substrate 17 and the second substrate 18 are connected by a resin 19.
  • the branch wiring 5 connected to the ladder cord 6 that supports the illumination panel 10 is formed on the first substrate 17 that is electrically connected to the organic EL element 20.
  • the conductive wiring 9 is connected to the organic EL element 20 via the connection wiring 8.
  • At least one of the first substrate 17 and the second substrate 18 is made of a light transmissive material.
  • a transparent material such as a glass substrate or a resin substrate is applicable.
  • an opaque metal material or the like can be used in the case where one of the substrates is formed using a material that does not transmit light.
  • the first substrate 17 and the second substrate 18 may be made of a flexible material such as PET or PEN. If the first substrate 17 and the second substrate 18 are configured using a flexible material, the first substrate 17 and the second substrate 18 can be bent even when the organic EL lighting device 1 is bent. We can cope without.
  • the first substrate 17 and the second substrate 18 may have a flat plate shape or a shape having a curved surface.
  • the light emission surface side of the organic EL lighting device 1 may be curved in a convex shape or may be curved in a concave shape.
  • the light emitting surface side of the organic EL lighting device 1 When the light emitting surface side of the organic EL lighting device 1 is curved in a convex shape, the light of the organic EL lighting device 1 can be easily diffused, and the room or space where the organic EL lighting device 1 is installed Can be illuminated over a wide area.
  • the light emission surface side of the organic EL lighting device 1 is curved in a concave shape, the light of the organic EL lighting device 1 can be easily condensed, and from the installation position of the organic EL lighting device 1 It is possible to illuminate a point or a surface that is close to each other in a concentrated manner.
  • an organic / inorganic hybrid layer or a multi-layered film of an organic layer and an inorganic layer is formed in order to increase gas barrier properties and mechanical strength and reduce gas permeability. May be.
  • substrate 18 can be made into the rectangular flat plate shape of width 70mm, length 1000mm, and thickness 0.7mm, for example, it is not necessarily limited to this.
  • the first substrate 17 and the second substrate 18 are arranged so as to sandwich the organic EL element 20, and the first substrate 17 and the second substrate 18 are connected via a resin 19 such as a thermosetting resin or a UV curable resin. ing.
  • a region surrounded by the first substrate 17 and the second substrate 18, that is, a region where the organic EL element 20 is sealed is adjusted, for example, under an inert gas such as nitrogen or argon, or under vacuum. In this way, oxygen or moisture from outside enters the organic EL layer 13 of the organic EL element 20 by filling the region between the substrates with an inert gas or by evacuating the region. Can be suppressed. Therefore, it is not necessary to perform a process for providing each organic EL element 20 with a gas barrier property.
  • a hygroscopic agent such as barium oxide may be blended in the region between both substrates. According to this, the periphery of the organic EL element 20 can be kept dry.
  • the region between both substrates is filled with a heat radiation resin having high thermal conductivity.
  • a heat radiation resin having high thermal conductivity for example, insulating acrylic rubber, ethylene propylene rubber, or the like can be applied. According to this, since the heat radiation resin having high thermal conductivity is filled, the heat in the region between the two substrates can be efficiently released to the outside or the thermal uniformity can be increased.
  • the substrate that is not on the light emitting surface side is preferably composed of a light reflective material or a material having a light reflective surface.
  • the gap between the first substrate 17 and the second substrate 18 is preferably surrounded and sealed with a light reflective material or a material having a light reflective surface. According to this, the light emitted from the surface other than the light emitting surface of the organic EL element 20 is reflected on the wall surface of the illumination panel 10 (the wall surface of the illumination panel 10 surrounding the organic EL element 20). Therefore, the light leaking from the organic EL element 20 can be extracted more effectively.
  • the conductive wiring 9 is formed on the surface of the first substrate 17 on the side where the organic EL element 20 is disposed.
  • the conductive wiring 9 is disposed so as to extend in the width direction of the organic EL element 20.
  • the conductive wiring 9 for example, ITO, IZO, alkali metal, alkaline earth metal, or the like is applicable.
  • the conductive wiring 9 can have a width of about 2 mm, a length of 20 mm, and a thickness of about 150 mm, for example, but is not necessarily limited thereto.
  • Two of these conductive wirings 9 form a set, one of which is connected to the first electrode 12 (FIG. 5) of the organic EL element 20 and the other is connected to the second electrode 14 (FIG. 5). .
  • a voltage can be applied to the organic EL element 20 by passing a current through the set of conductive wirings 9. It is preferable that each set of the conductive wirings 9 can be individually controlled. According to this, the organic EL element 20 connected to one set of conductive wiring 9 can be driven independently. Therefore, since each organic EL element 20 can be individually driven, it is possible to perform light control such as light emission intensity or color tone of the organic EL lighting device 1.
  • one organic EL element 20 is divided into a plurality of colors or a plurality of types having different emission colors.
  • the organic EL element 20 can be used.
  • a plurality of conductive wirings 9 are arranged in parallel to the major axis direction.
  • the lighting rate of the red light emitting organic EL element (R) is 30%
  • the green light emitting organic EL element (G) A voltage is preferably applied to each conductive wiring 9 so that the lighting rate is 22% and the lighting rate of the blue light-emitting organic EL element (B) is 48%.
  • the lighting rate means a ratio to the maximum current flowing through the anode or cathode of the lighting panel 10 (however, the duty ratio is 1/1).
  • the first electrode 12 is connected to the conductive wiring 9 via the connection wiring 8, which is connected to the first cord 6 a of the ladder cord 6 via the branch wiring 5, and the second electrode 14 is similarly connected to the connection wiring 8. This is connected to the conductive wiring 9 via the branch wire 5, which is connected to the second cord 6 b of the ladder cord 6 via the branch wiring 5.
  • the connection wiring 8 is preferably formed of lead-free solder or silver paste.
  • an auxiliary electrode or an auxiliary wiring may be provided along the long side direction of the organic EL element 20. According to this, the voltage drop due to the resistance of the first electrode 12 and the second electrode 14 of the organic EL element 20 can be reduced, and the uneven emission can be suppressed.
  • the auxiliary electrode may be provided over the entire circumference of the organic EL element, or may be provided partially at one end or both ends of the long side.
  • the lifting / lowering cord 3 may have a wiring function. As a result, the supply of power is stabilized by securing a plurality of power supply sources. In addition, since power supply sources are prepared at short intervals, it is possible to prevent the occurrence of light emission spots due to a decrease in the voltage flowing from each cord.
  • (Configuration of organic EL element 20) 5 is a cross-sectional view taken along the arrow line BB ′ shown in FIG. FIG. 5 does not show the first substrate 17 and the second substrate 18 for convenience of explanation.
  • the organic EL element 20 has a configuration in which a first electrode 12, an organic EL layer 13, and a second electrode 14 are laminated in this order on a support substrate 11. Further, in order to protect both the electrodes and the organic EL layer 13, the protective layer 15 is provided so as to cover the surface of the second electrode 14, but this is not an essential configuration of the organic EL element 20.
  • the organic EL element 20 by applying a voltage to the first electrode 12 and the second electrode 14, holes are injected from one electrode and electrons are injected from the other electrode.
  • the organic EL layer 13 has a light emitting layer, and the organic EL element 20 emits light when the injected holes and electrons are recombined in the light emitting layer.
  • the organic EL element 20 can be formed into a rectangular flat plate having a width of about 50 mm, a length of 450 mm, and a thickness of about 0.7 mm, but is not necessarily limited thereto.
  • the support substrate 11 is preferably made of an insulating material.
  • the insulating material is, for example, a transparent plastic film such as stretched polypropylene (OPP), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), or polyphenylene sulfite (PPS).
  • OPP stretched polypropylene
  • PEN polyethylene naphthalate
  • PET polyethylene terephthalate
  • PPS polyphenylene sulfite
  • the support substrate 11 can be employed as the insulating film.
  • the present invention is not necessarily limited to this, and an insulating film may be separately provided on the support substrate 11.
  • a protective film such as a silicon oxide film is preferably formed on the support substrate 11. Thereby, it is possible to prevent the alkali oxide from being eluted from the inside of the support substrate 11.
  • the portion (first substrate 17) where the organic EL element 20 is disposed is curved, it can be disposed without any problem.
  • the light emission surface side of the organic EL element 20 is curved in a concave shape, the light of the organic EL element 20 can be easily diffused, and the room where the organic EL lighting device 1 is installed, or It becomes possible to illuminate the space extensively.
  • the light emitting surface side of the organic EL element 20 is curved in a convex shape, the light of the organic EL element 20 can be easily condensed and is close to the installation position of the organic EL lighting device 1.
  • a configuration may be provided in which an adjustment unit that can appropriately adjust the curvature of the support substrate 11 is provided. According to this, as described above, when the light emitting surface side of the organic EL element 20 is curved in a convex shape, the light of the organic EL element 20 can be easily diffused, and the organic EL element 20 The room or space where the mounted organic EL lighting device 1 is installed can be illuminated in a wide range.
  • the light emitting surface side of the organic EL element 20 is curved in a concave shape, the light of the organic EL element 20 is illuminated. Can be easily condensed, and it is possible to intensively illuminate a point or a surface that is close to the installation position of the organic EL lighting device 1 mounted with the organic EL element 20. As an adjustment means, there exists an aspect mentioned later.
  • the support substrate 11 has flexibility, the organic EL element 20 can be produced using a roll-to-roll method. As a result, it is possible to reduce initial investment for introducing the apparatus, running cost, and the like. Furthermore, by packing the support substrate 11 from both sides with a substrate having low oxygen permeability or low water permeability, an organic multilayer film or an inorganic multilayer film is unnecessary, and an inexpensive organic EL element 20 can be manufactured. Is possible. However, the present invention is not necessarily limited to this.
  • the support substrate 11 may be made of a material such as glass.
  • a light reflective material such as a metal film
  • a light reflective material such as a metal film
  • an insulating film such as silicon nitride (SiNx) having a thickness of about 500 nm is preferably formed on the surface by a synthetic resin such as an epoxy resin or a plasma CVD apparatus.
  • the support substrate 11 may further contain a light diffusing material.
  • the light diffusing material include methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, normal butyl methacrylate, normal butyl methyl methacrylate, methyl methacrylate, methyl acrylate, a copolymer or a terpolymer.
  • Acrylic particles such as polyethylene, polystyrene (PS), polypropylene and the like, or a copolymer of acrylic particles and olefin particles.
  • multilayer multi-component particles or the like in which another type of monomer is coated on the upper layer also have light diffusibility, and such particles are also applicable.
  • the organic EL element 20 is diffused and emitted. Therefore, usually, a microcavity (microresonator) structure is employed, and the light emitted from the organic EL element 20 is resonated and condensed by adjusting the optical path length. As a result, an improvement in luminous efficiency and an improvement in color purity can be realized, and light can have directivity and the like.
  • the emitted light passes through the light diffusing portion and is uniformly diffused and emitted from the light emitting surface. While improving the color purity and luminous efficiency of the EL lighting device 1, it is possible to realize a wide viewing angle.
  • first electrode 12 and the second electrode 14 will be described.
  • One of the first electrode 12 and the second electrode 14 is a cathode, and the other electrode is an anode.
  • the material for the anode include indium tin oxide (ITO) and indium zinc oxide (IZO).
  • examples of the material for the cathode include alkali metals or alkaline earth metals.
  • examples of the material for the cathode include alkali metals or alkaline earth metals.
  • the film is preferably composed of a film, a barium compound film, a cesium film, a cesium compound film, a fluorine compound film, or the like.
  • the first electrode 12 is formed of a light transmissive or light semi-transmissive material (transparent electrode), and the second electrode 14 is formed of a light reflective material. It is preferable to do.
  • the organic EL element 20 is a top emission type
  • the first electrode 12 is formed of a light-reflective material
  • the second electrode 14 is a light-transmitting or light-semi-transmissive material (transparent electrode or semi-transparent material). It is preferable to form with a transparent electrode. According to this, the light emitted from the organic EL element 20 is emitted from the transparent electrode side, and the light can be efficiently taken out of the element.
  • the electrode on the light extraction side a transparent electrode
  • light can be condensed by a microcavity (microresonator) effect.
  • microcavity microresonator
  • an improvement in luminous efficiency and an improvement in color purity can be realized, and light can have directivity and the like.
  • a reflective electrode for the electrode opposite to the light extraction side even if the light emitted from the organic EL element 20 is emitted to the non-light emitting surface side, it is reflected by the electrode having light reflectivity, It is emitted from the light exit surface side. As a result, the utilization efficiency of the light emitted from the organic EL element 20 can be increased.
  • the organic EL element 20 Since the organic EL element 20 has a light emission distribution whose light intensity is close to an isotropic Lambert distribution, the organic EL element 20 utilizes the microcavity effect obtained by sandwiching the organic layer between the reflective electrode and the transparent electrode. It is also possible to collect the light from the element 20. By using a transparent electrode on the light exit surface side and a reflective electrode on the opposite side, multiple reflection interference is repeated between the two electrodes to resonate and emphasize.
  • the light emission luminance of the organic EL element 20 can be increased by extracting only light that matches the optical path length between the electrodes. Thereby, unnecessary light deviating from the optical path length is weakened, and the spectrum of the light extracted to the outside becomes steep, so that the color purity of the organic EL element 20 is improved.
  • directivity can be given to light.
  • red light emission (R), green light emission (G), and blue light emission (B) since the wavelength of each light differs, it is necessary to adjust the film thickness of a transparent electrode or a semi-transparent electrode for every light source. .
  • Protective layer 15 examples of the material of the protective layer 15 include silicon oxynitride.
  • the protective layer 15 can have a thickness of about 100 nm, but is not necessarily limited thereto.
  • the diffusion resin layer is a binder resin containing a plurality of light diffusion particles inside.
  • the binder resin include acrylic resins, polyester resins, polyolefin resins, and polyurethane resins.
  • the light diffusing particles include methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, normal butyl methacrylate, normal butyl methyl methacrylate, methyl methacrylate, methyl acrylate, a copolymer or a terpolymer.
  • Acrylic particles polyethylene, polystyrene (PS), olefin particles such as polypropylene, or a copolymer of acrylic particles and olefin particles.
  • PS polystyrene
  • olefin particles such as polypropylene
  • a copolymer of acrylic particles and olefin particles after forming single polymer particles, multilayer multi-component particles or the like in which another type of monomer is coated on the upper layer also have light diffusibility, and such particles are also applicable.
  • PMMA polymethyl methacrylate
  • the diffusion resin layer can have a thickness of about 150 ⁇ m, for example, but is not necessarily limited thereto.
  • the diffusion resin layer may be a diffusion plate.
  • the diffusion plate include acrylic resin, polyester resin, polyolefin resin, polyurethane resin, crosslinked polymethyl methacrylate, or crosslinked polystyrene in which light diffusion particles are dispersed.
  • a wavelength conversion layer for converting the wavelength of light may be provided on the surface of the organic EL element 20 on the light extraction side.
  • the wavelength conversion layer may be formed of, for example, an inorganic phosphor such as yttrium / aluminum / garnet (YAG), a known organic phosphor preferably used in an organic EL element, or another phosphor. preferable.
  • YAG yttrium / aluminum / garnet
  • the light emitted from the organic EL element 20 can be converted into light having a desired wavelength.
  • the wavelength conversion layer can have a thickness of about 100 ⁇ m, for example, but is not necessarily limited thereto.
  • a circularly polarizing plate or a color filter can be provided on the light extraction side surface of the organic EL element 20.
  • the circularly polarizing plate can circularly polarize the light emitted from the organic EL element 20 and suppress external light reflection.
  • a circularly polarizing plate has a structure in which a retardation plate functioning as a 1 / 4 ⁇ plate is bonded to a linear polarizing plate, and the 1/4 retardation film is tilted by 45 degrees with respect to the absorption axis of the linear polarizing plate. It becomes a right-handed circularly polarizing plate.
  • a 1/4 retardation film is tilted 135 degrees (-45 degrees) with respect to the absorption axis of the linear polarizing plate, it becomes a left-rotating circularly polarizing plate.
  • the light transmitted through the linearly polarizing plate becomes light that rotates clockwise when passing through the right rotating circularly polarizing plate, and when the light is reflected by a glass surface or the like, The direction of rotation is reversed and the light turns counterclockwise and enters the right rotating circularly polarizing plate again.
  • the clockwise rotating circularly polarizing plate transmits only clockwise light, absorbs counterclockwise light, and finally the reflected light of outside light can be made substantially zero. Utilizing this property, the circularly polarizing plate can remove external light reflection in the organic EL lighting device 1.
  • the retardation plate is a film having a birefringence and can be produced by stretching a plastic film in a specific direction. Any material that is transparent and can be stretched may be used.
  • a polycarbonate polymer, a polyester polymer, a polysulfone polymer, a polystyrene polymer, a polyphenylene oxide polymer, or a polyolefin polymer can be used.
  • the color filter it is possible to emit only light having a desired wavelength from the light emitted from the organic EL element, and to obtain the effect of suppressing and reducing the reflection of external light.
  • the light emitted from the organic EL element 20 has a wide spectrum shape and a long tail on the long wavelength side compared to the light emitted from the inorganic EL element, which causes a problem when trying to reproduce high color purity.
  • the color filter is used in combination, the spectrum of the unnecessary region is cut, and the spectrum having a narrow width (approximately half the width) can be obtained.
  • the suppression and reduction effect of external light reflection of the color filter is not as high as that of the circularly polarizing plate.
  • the unnecessary region wavelength of the light emitted from the organic EL element 20 is removed. And the effect of increasing the color purity can be exhibited at the same time. Furthermore, since the light extraction efficiency is higher than that of the circularly polarizing plate, the light emission efficiency of the organic EL element 20 is relatively high, and the introduction into the organic EL lighting device 1 is very effective.
  • Organic EL layer 13 only needs to include at least a light emitting layer, and a plurality of hole injection layers, hole transport layers, electron blocking layers, light emitting layers, hole blocking layers, electron transport layers, and electron injection layers. It should just be comprised from. For example, a three-layer structure in which a hole transport layer, a light emitting layer, and an electron transport layer are stacked may be used.
  • a five-layer structure in which a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer are laminated, or a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, Examples thereof include a seven-layer structure in which a hole blocking layer, an electron transport layer, and an electron injection layer are stacked.
  • the charge transporting and light emitting layer has a high hole transporting property and electron transporting property and has a good balance of holes and electrons.
  • the organic EL layer 13 may be configured from a single layer structure.
  • both charge transport materials can propagate the holes injected from the anode and the electrons injected from the cathode to the light emitting region with (1) high mobility and high balance, (2) Since the energy difference between the highest occupied level / the lowest empty level (HOMO / LUMO) is sufficiently large (about 3 eV) and is a wide gap material, high luminous efficiency can be obtained.
  • the hole and electron injection properties may be inferior. It has an injection region and an electron injection region.
  • the organic EL layer 13 may have at least a light emitting layer.
  • the light emitting layer is formed of a dual charge transporting material in which a host material such as a hole transporting material or an electron transporting material is doped with a light emitting dopant.
  • Examples of the host material include 4,4'-N, N'-dicarbazolylbiphenyl (hereinafter referred to as CBP), which has the following chemical structural formula.
  • a red light emitting dopant is used as the light emitting dopant.
  • the red light-emitting dopant include bis (1- (phenyl) isoquinolinato-N, C2 ′) iridium (III) (acetylacetonate) (hereinafter referred to as (piq) 2 Ir (acac), which has the following chemical structural formula. )) And other red phosphorescent dopants.
  • a red light emitting layer is obtained by co-evaporating the red light emitting dopant and the host material.
  • the red light emitting layer can have a thickness of about 5 nm, for example, but is not necessarily limited thereto.
  • a green light emitting dopant is used as the light emitting dopant.
  • the green light emitting dopant include green phosphorescent light emitting dopants such as (2-phenylpyridine) iridium (hereinafter, Ir (ppy) 3 ), which has the following chemical structural formula.
  • Ir (ppy) 3 green phosphorescent light emitting dopants
  • a green light emitting layer is obtained by co-evaporating the green light emitting dopant and the host material.
  • the green light emitting layer can have a thickness of about 20 nm, for example, but is not necessarily limited thereto.
  • a blue light emitting dopant is used as the light emitting dopant.
  • the blue light-emitting dopant include blue phosphorescent light-emitting dopants such as iridium (III) bis [(4,6-difluorophenyl) -pyridinate-N, C2] picolinate (hereinafter referred to as FIrpic).
  • FIrpic iridium (III) bis [(4,6-difluorophenyl) -pyridinate-N, C2] picolinate
  • a blue light-emitting layer is obtained by co-evaporating the blue light-emitting dopant and the host material.
  • the blue light-emitting layer can have a thickness of about 30 nm, but is not necessarily limited thereto.
  • the organic EL layer 13 can be provided with a hole injection layer, a hole transport layer, an electron blocking layer, an electron injection layer, an electron transport layer, and a hole blocking layer.
  • the hole injection layer has a function of efficiently injecting holes received from the anode into the light emitting layer.
  • the hole injecting material for example, 4,4 ′, 4 ′′ -tris (N-3-methylphenyl-N-phenylamino) triphenylamine, a starburst amine having the following chemical structural formula ( Hereinafter, m-MTDATA) and the like can be mentioned.
  • the hole injection layer can have a thickness of about 30 nm, for example, but is not necessarily limited thereto.
  • the hole transport layer has a function of efficiently transporting holes received from the anode to the light emitting layer.
  • the hole transporting material include aromatic tertiary amines such as 4,4 ′, 4 ′′ -tri (N-carbazolyl) triphenylamine (hereinafter, TCTA), which have the following chemical structural formula. Compounds.
  • TCTA aromatic tertiary amines
  • the hole transport layer can have a thickness of about 10 nm, for example, but is not necessarily limited thereto.
  • the electron blocking layer has a function of blocking the movement of electrons to the anode side.
  • an electron blocking material for example, 4,4′-bis- [N, N ′-(3-tolyl) amino-3,3′-dimethylbiphenyl (hereinafter referred to as HMTPD) having the following chemical structural formula Etc.
  • HMTPD 4,4′-bis- [N, N ′-(3-tolyl) amino-3,3′-dimethylbiphenyl
  • Etc chemical structural formula
  • the electron blocking layer can have a thickness of about 10 nm, for example, but is not necessarily limited thereto.
  • the electron injection layer has a function of efficiently injecting electrons received from the cathode into the light emitting layer.
  • the electron injecting material include lithium fluoride (LiF).
  • the electron injection layer can have a thickness of about 1 nm, for example, but is not necessarily limited thereto.
  • LiF lithium fluoride
  • the electron transport layer has a function of efficiently transporting electrons received from the cathode to the light emitting layer.
  • the electron transporting material for example, tris (8-hydroxyquinoline) aluminum (hereinafter referred to as Alq 3 ) having a chemical structural formula shown below, or 3-phenyl-4 ( 1'-naphthyl) 5-phenyl-1,2,4-triazole (hereinafter TAZ) and the like.
  • the electron transport layer can have a thickness of about 30 nm, for example, but is not necessarily limited thereto.
  • the hole blocking layer has a function of blocking the movement of holes to the cathode side.
  • the hole blocking material include 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (hereinafter referred to as BCP), which has the following chemical structural formula.
  • BCP 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline
  • the hole blocking layer can have a thickness of about 10 nm, for example, but is not necessarily limited thereto.
  • a stable electron blocking layer and hole blocking layer can be formed by a simple method called vapor deposition polymerization.
  • the both charge transporting materials constituting the electron blocking layer are the lowest free orbit of the both charge transporting materials constituting the light emitting layer.
  • the holes propagated from the anode and the electrons propagated from the cathode are confined in the light emitting layer, the probability that the holes and electrons recombine in the light emitting layer is increased, and the driving voltage of the organic EL element 20 is increased. Can be reduced.
  • the organic EL element 20 since the probability of recombination of holes and electrons in the light emitting layer is increased, the internal quantum yield can be improved and the light emission efficiency can be improved. However, it is not always necessary to provide both the electron blocking layer and the hole blocking layer, and the probability of recombination of holes and electrons can be sufficiently increased by having only one of them. Therefore, it is possible to provide the organic EL element 20 that realizes high luminance, high efficiency, and long life.
  • the organic EL layer 13 may further include a charge generation layer.
  • a charge generation layer for example, a hole transport layer, a light emission layer, a charge generation layer, a hole transport layer, a light emission layer, and an electron transport layer are included.
  • the organic EL layer 13 is formed by stacking in this order. That is, the organic EL element 20 including a plurality of light emitting layers can be formed. By forming an equipotential surface between the light emitting layers adjacent to each other with the charge generation layer, the driving voltage is increased while the flowing current is reduced, and an excellent light emission lifetime can be obtained.
  • the material for the charge generation layer include vanadium pentoxide (V 2 O 5 ).
  • the charge generation layer can have a thickness of about 20 nm, for example, but is not necessarily limited thereto.
  • the illumination panel 10 used in this embodiment is basically composed of an organic EL element 20 that emits white light. However, a plurality of types of organic EL elements 20 that emit light having different wavelengths may be used in order to provide the organic EL lighting device 1 with dimming properties and toning properties.
  • the organic EL elements 20 may have the same shape or different shapes.
  • the length or width of the organic EL elements 20 may be different for each emission color.
  • the organic EL lighting device 1 that is superior in terms of power consumption, light emission luminance, and light emission lifetime can be realized by designing the light emitting dopant in an arbitrary width in consideration of characteristics such as light emission efficiency of each light emitting dopant.
  • the red light emitting organic EL element (R), the green light emitting organic EL element (G), and the blue light emitting organic EL element (B) The organic EL element 20 can be used.
  • the RGB organic EL elements 20 may be set as one set, and the set may be repeatedly arranged on the first substrate 17 as shown in FIG.
  • FIG. 6 is a diagram illustrating an arrangement example of the organic EL element 20. In this figure, in order to make the layout of the organic EL element 20 easier to understand, the figure is simplified.
  • an organic EL element 20 of an orange light-emitting organic EL element and a blue light-emitting organic EL element can be used.
  • one organic EL element 20 may be separately applied to a plurality of colors by a method such as mask patterning. According to this, it is possible to provide the organic EL lighting device 1 with dimming property and toning property with one organic EL element 20.
  • the organic EL elements 20 of the respective emission colors may be arranged in other layouts in addition to the parallel arrangement.
  • the RGB organic EL elements 20 may be set as one set, and the RGB organic EL elements 20 may be arranged in an L shape in each set. You may arrange
  • the configuration in which the organic EL elements 20 are juxtaposed is shown.
  • the present invention is not necessarily limited thereto.
  • the organic EL element 20 having a tandem structure in which light emitting layers of the respective colors are stacked may be used.
  • the support substrate 11 may be disposed so as to be in contact with the first substrate 17, or the second electrode 14 on the opposite side to the support substrate 11 is disposed so as to be in contact with the first substrate 17. May be.
  • the 2nd electrode 14 of the organic EL element 20 is arrange
  • substrate 17 may be contacted, the 2nd electrode 14 becomes a lower electrode and the 1st electrode 12 becomes an upper electrode. Therefore, when providing an insulating film for insulating the conductive wiring 9 on the first substrate 17 and the organic EL element 20, the insulating film is provided between the second electrode 14 and the first substrate 17.
  • the protective layer 15 may be adopted as an insulating film, but is not necessarily limited to this. An insulating film may be separately provided between the substrate 17.
  • the organic EL element 20 (Other arrangement examples of the organic EL element 20)
  • the configuration in which the organic EL element 20 is disposed on the first substrate 17 has been described above.
  • the present invention is not particularly limited thereto.
  • the organic EL element 20 is disposed on both the first substrate 17 and the second substrate 18. May be.
  • the configuration in which the organic EL element 20 is arranged so that the support substrate 11 and the first substrate 17 are in contact with each other is shown, but the present invention is not particularly limited thereto, and the second electrode 14 side is the first substrate 17 or the second substrate.
  • the structure which touches 18 may be sufficient. This will be described with reference to FIGS. FIG.
  • FIG. 7 is a view showing a cross section of the organic EL lighting device 1 in which the bottom emission type organic EL element 20 is arranged on the first substrate 17 and the top emission type organic EL element 20 is arranged on the second substrate 18.
  • FIG. 8 is a view showing a cross section of the organic EL lighting device 1 in which the bottom emission type organic EL elements 20 are arranged on the first substrate 17 and the second substrate 18.
  • FIG. 9 is a view showing a cross section of the organic EL lighting device 1 in which the top emission type organic EL element 20 is arranged on the first substrate 17.
  • the protective layer 15 is not shown in order to simplify the drawing.
  • the support substrate 11 of the bottom emission type organic EL element 20 is disposed so as to contact the first substrate 17, and the support substrate 11 of the top emission type organic EL element 20 is the second substrate 18.
  • a material having transparency is used for the first substrate 17, and a material having light reflectivity is used for the second substrate 18. Accordingly, light from the organic EL element 20 disposed on the first substrate 17 is emitted from the first substrate 17 side, and light from the organic EL element 20 disposed on the second substrate 18 is also emitted from the first substrate 17 side. Will be released.
  • the arrangement position of the organic EL element 20 on the first substrate 17 and the arrangement position of the organic EL element 20 on the second substrate 18 do not overlap each other. According to this, the substantial light emission area of the organic EL lighting device 1 can be increased.
  • the second substrate 18 may be disposed so that the second electrode 14 of the bottom emission type organic EL element 20 is in contact therewith. According to this, light from the organic EL element 20 disposed on the second substrate 18 is emitted from the first substrate 17 side.
  • the light emission surface of the organic EL element 20 is arranged on the first substrate 17 so as to face the first substrate 17 side.
  • the support substrate 11 of the top emission type organic EL element 20 may be disposed so as to be in contact with the first substrate 17.
  • the light emitted from the organic EL element 20 is reflected by the second substrate 18 having light reflectivity, and the reflected light is emitted from the first substrate 17 side.
  • the organic EL lighting device 1 can be an indirect lighting device.
  • the first substrate 17 may be disposed so that the second electrode 14 of the bottom emission type organic EL element 20 is in contact therewith.
  • both the first substrate 17 and the second substrate 18 are made of a transparent material, and the light of the organic EL element 20 is transmitted from both the first substrate 17 side and the second substrate 18 side. May be released. According to this, the double-sided organic EL lighting device 1 can be obtained. At this time, the bottom emission type organic EL element 20 is disposed on the first substrate 17 and the second substrate 18, but is not particularly limited thereto.
  • the organic EL element 20 may be sealed in a space configured in a columnar shape, a rectangular parallelepiped shape, a spherical shape, or the like by three or more substrates.
  • FIG. 11A is a diagram illustrating a process of preparing the support substrate 11.
  • FIG. 11B is a diagram illustrating a process of forming the first electrode 12.
  • FIG. 11C is a diagram illustrating a process of forming the organic EL layer 13.
  • FIG. 11D is a diagram illustrating a process of forming the second electrode 14.
  • FIG. 11E is a diagram illustrating a process of forming the protective layer 15.
  • FIG. 11F is a diagram illustrating a process of cutting off the organic EL element 20.
  • the manufacturing method of the organic EL element 20 is demonstrated using a specific example, it is not necessarily limited to this.
  • film tape 11 ' such as PET film used as the support substrate 11, is prepared, the 1st electrode 12, the organic EL layer 13, and the 2nd electrode on the said film tape 11'. 14 etc. are formed in order.
  • a plurality of first electrodes 12 are formed on the film tape 11 ′, and the organic EL layer 13, the second electrode 14, and the like are stacked on each first electrode 12.
  • the manufacture of the organic EL element 20 is preferably performed in an environment where the moisture concentration is low, such as a glove box under dry air.
  • an ITO film (for example, a thickness of 150 nm) is formed by sputtering, and a part of the ITO film is etched by laser ablation to form the first electrode 12.
  • the surface of the first electrode 12 is cleaned by ultrasonic cleaning and UV-ozone cleaning.
  • the ultrasonic cleaning for example, cleaning is performed for about 10 minutes using acetone or isopropyl alcohol (IPA) as a cleaning liquid.
  • IPA isopropyl alcohol
  • UV-ozone cleaning for example, cleaning is performed for about 30 minutes using a UV-ozone cleaning machine.
  • an organic EL layer 13 is formed on the first electrode 12 by vacuum deposition.
  • a starburst amine m-MTDATA for example, a thickness of 30 nm
  • a TCTA for example, a thickness of 10 nm
  • the film thickness is preferably measured by a crystal resonator.
  • a green light emitting layer, a blue light emitting layer, and a red light emitting layer are laminated in this order on the hole transport layer as a light emitting layer.
  • These light emitting layers can be achieved by two-component co-evaporation.
  • the green light emitting layer co-deposits CBP (host material) and Ir (ppy) 3 (green light emitting dopant) while controlling the respective evaporation rate ratios to be 0.92: 0.08.
  • the film thickness is 5 nm.
  • the blue light emitting layer is co-deposited, for example, by controlling CBP (host material) and FIrpic (blue light emitting dopant) so that the respective evaporation rate ratios are 0.92: 0.08.
  • the film thickness is 30 nm.
  • the red light emitting layer is formed by, for example, forming CBP (host material) and (piq) 2 Ir (acac) (red light emitting dopant) with a deposition rate ratio of 0.92 respectively. : Co-deposited by controlling to be 0.08. For example, the film thickness is 5 nm.
  • a BCP for example, a thickness of 10 nm
  • an Alq (30 nm) is formed as an electron transport layer on the light emitting layer.
  • LiF 0.5 nm
  • an aluminum film for example, a thickness of 100 nm
  • a SiON film for example, a thickness of 100 nm
  • the above organic EL layer 13 is heat-treated or irradiated with ultraviolet rays at the same time as or after vapor deposition of at least one material constituting the organic EL layer 13 under vacuum conditions.
  • the substrate is heated by heat treatment or ultraviolet irradiation, the reaction is accelerated, (1) vapor deposition polymerization can be completed, and (2) the degree of polymerization can be controlled.
  • the molecular orientation in the deposited film can be controlled by heat treatment.
  • ultraviolet irradiation it is more preferable to perform heat treatment after the ultraviolet irradiation.
  • the substrate is heated by ultraviolet irradiation, the reaction is accelerated, (1) vapor deposition polymerization can be completed, and (2) the degree of polymerization can be controlled.
  • the molecular orientation in the deposited film can be controlled by performing the heat treatment thereafter.
  • it is also possible to form a pattern by transferring a pattern using a mask at the time of ultraviolet irradiation and removing a portion that has not been cured after ultraviolet irradiation.
  • the film tape 11 ′ is divided into a predetermined length, and the organic EL elements 20 are cut one by one.
  • each organic EL element 20 is shifted in the major axis direction by making the length of the margin from the light emitting region to the end of the organic EL element 20 non-uniform. Even when it is provided, the positions of the light emitting regions can be aligned in the long axis direction.
  • FIG. 12A is a schematic view showing a roll-to-roll vapor deposition apparatus for forming the organic EL element 20 according to this embodiment.
  • FIG. 12B is a diagram showing a state in which the organic EL element 20 is arranged on the first substrate 17.
  • FIG. 12C is a diagram showing a process of manufacturing the lighting panel 10 by arranging the second substrate 18 so as to cover the first substrate 17.
  • FIG. 12D is a diagram showing a state in which a plurality of lighting panels 10 are arranged between the head box 2 and the bottom rail 4.
  • the film tape 11 'on which the plurality of first electrodes 12 are formed is installed in a roll-to-roll vapor deposition apparatus as shown in FIG.
  • the roll-to-roll vapor deposition apparatus includes two rolls 22 for winding the film tape 11 ', and a plurality of forming portions 23 for forming the organic EL layer 13, the second electrode 14, and the like.
  • the film tape 11 ′ is sent out at a constant speed of 1 m / sec so as to pass through each forming portion 23.
  • the organic EL layer 13 and the second electrode 14 are sequentially deposited on the first electrode 12 by the forming portion 23, and finally the film A plurality of layers in which the first electrode 12, the organic EL layer 13, and the second electrode 14 are laminated on the tape 11 ′ are formed.
  • the film tape 11 ′ wound on the roll 22 is divided into a predetermined length. To do. In this way, a plurality of organic EL elements 20 can be produced.
  • the produced organic EL element 20 is arranged on the first substrate 17 to form the organic EL panel 10 ′.
  • the conductive wiring 9 is previously formed on the first substrate 17 by using a method such as a vacuum evaporation method using a mask, a sputtering method, or a photolithography technique. Then, for example, the organic EL element 20 disposed on the first substrate 17 is connected to the conductive wiring 9 via the connection wiring 8 formed of lead-free solder or the like.
  • the second substrate 18 is fixed on the first substrate 17 so as to cover the first substrate 17 on which the organic EL element 20 is arranged.
  • a UV curable resin can be used for fixing the second substrate 18.
  • epoxy resin such as 30Y-332 manufactured by ThreeBond Co., Ltd. can be applied.
  • a plurality of lighting panels 10 are arranged between the head box 2 and the bottom rail 4. Specifically, the lighting panel 10 is placed on the third cord of the ladder cord 6 extending from the head box 2, and the branch wiring 5 and the conductive wiring 9 connected to the ladder cord 6 are connected via the connection wiring 8. Connect. Thereafter, the lifting / lowering cord 3 is arranged near the short side of the lighting panel. In this way, the organic EL lighting device 1 can be manufactured.
  • the organic EL element 20 it is preferable to produce the organic EL element 20 using a roll-to-roll vapor deposition apparatus in this embodiment. This is because the roll-to-roll vapor deposition apparatus does not increase in size and has excellent material utilization efficiency.
  • the present invention is not particularly limited to this, and the organic EL element 20 may be manufactured using another device.
  • the ladder cord 6 has conductivity, and supplies voltage or current to the electrodes of the organic EL elements provided in the lighting panel 10. It is configured to be able to. Conventionally, a ladder cord that supports each lighting panel and a wiring cord that applies a voltage to each lighting panel are provided separately. Therefore, this has produced a negative effect in which the wiring configuring the lighting device is arranged on the front and side surfaces as seen from the light emitting surface of the lighting panel to block the illumination light.
  • the ladder code for supporting a plurality of lighting panels and changing their inclinations has a wiring function for supplying power to each lighting panel.
  • the configuration can be simplified as compared with the conventional configuration in which the ladder cord and the wiring cord for applying a voltage to each lighting panel are separately configured. Further, the light emission of the lighting panel is not interrupted by separately providing the wiring cord, and the illuminance of the room where the lighting device is installed can be increased efficiently.
  • a plurality of ladder cords 6 are arranged on the long side of one of the two long sides facing each other along the long axis direction of each lighting panel 10 with a predetermined interval along the arrangement direction.
  • the positive voltage from the commercial power source provided in the head box 2 is applied to the first cord, and the negative voltage from the power source is applied to the second cord. Yes. Therefore, it is possible to avoid luminance nonuniformity due to a voltage drop at the electrode of the light emitting element.
  • first cords 6a and second cords 6b are provided at predetermined intervals along the long axis direction of the illumination panel 10.
  • the distance between the ten electrodes can be made relatively short. If the distance between the ladder cord (wiring) and the electrode of the lighting panel is increased, a voltage drop phenomenon occurs.
  • such a phenomenon can be avoided by configuring the distance between the ladder cord (wiring) and the electrode of the lighting panel 10 to be relatively short. Therefore, it is possible to realize good illumination without emission spots.
  • the plurality of lighting panels 10 are moved so as to overlap each other by winding or unwinding the lifting / lowering cord 3, and are moved away from each other from the combined state. be able to. Thereby, when not using the illuminating device, a some illumination panel can be piled up and put together.
  • the so-called blind illumination device as in the present invention also has a function as a blind for a light-shielding interior in a normal window treatment. Therefore, by adopting the above configuration, when the blind illumination device is not used, it can be rolled up and folded.
  • the lifting / lowering cord 3 is disposed on the end side in the longitudinal direction of the plurality of strip-shaped lighting panels 10. Accordingly, for example, in the conventional configuration shown in FIG. 15, the take-up cord 109 is disposed through the hole provided in the central portion of the slat 102, but it is not necessary to provide such a hole. . Thereby, the area of the light emitting portion can be increased in terms of structure, and necessary illuminance can be easily obtained. Furthermore, since it is not necessary to provide a hole in the center of the panel, the light emitting element manufacturing process (panel manufacturing process) can be simplified.
  • the ladder code 6 has been described as having the first code, the second code, the third code, and the branch wiring 5, but the present invention is not limited to this.
  • the third cord is not provided, and the branch wiring 5 is electrically connected to the lighting panel 10 and is also physically connected to the lighting panel 10 to support the lighting panel 10. It may be configured.
  • FIG. 13 is a diagram showing this form.
  • holes (guide portions) 16 are provided in the vicinity of both ends in the long axis direction of the illumination panel 10 (the first substrate 17 and the second substrate 18).
  • the lifting / lowering cord 3 passes through the hole 16 on one side of each lighting panel 10, and another one lifting / lowering cord 3 passes through the hole 16 on the other side of each lighting panel 10.
  • the lifting / lowering cord 3 only passes through the hole 16, and the lighting panel 10 and the lifting / lowering cord 3 do not fix each other. However, since the respective positional relationships are determined, stable winding is possible.
  • the air holes 16 are provided to serve as a mechanism for stabilizing the winding without fixing between the lifting / lowering cord 3 and the lighting panel 10. If you do, you will not be caught in the form of holes.
  • the other guide portions include a groove provided at the end of the lighting panel, a notch, a hook protruding from the end of the lighting panel, and the like.
  • the arrangement position is preferably within 10 mm inward from the edge (edge) of the lighting panel 10, and if it is a hook, the lighting panel It is preferable that it is provided within a range of 10 mm or less from the 10 end sides (edges). Thereby, the area of the light emission part of the organic EL element 20 can be taken widely in the illumination panel 10, and it becomes easy to earn required illumination intensity.
  • the holes 16 are provided in the first substrate 17 by using the holes 16 as positioning portions when the first substrate 17 and the second substrate 18 are connected.
  • the positions of the first substrate 17 and the second substrate 18 can be determined so that 16 and the holes 16 provided in the second substrate 18 coincide.
  • the lighting panel 10 can be formed by arranging the corresponding portions of the upper and lower substrates to coincide with each other.
  • the lighting panel 10 is provided in the vicinity of both ends in the long axis direction. It ’s fine. Accordingly, in addition to the vicinity of the both ends, for example, it may be provided in the center of the lighting panel 10, that is, between the two organic EL elements 20 and 20, or only one lifting cord 3 is provided. In the case of the configuration in which the lift cord 3 is provided, a hole may be provided only in the central portion, and the lifting cord 3 may be passed through the hole.
  • FIG. 14 is a diagram for explaining a mode in which adjustment means is provided
  • FIG. 14A is a diagram of the illumination panel 10 as viewed from the short side. Note that, based on the configuration of the present embodiment, the lifting / lowering cord 3 should be disposed at the center of each of the three lighting panels 10 shown in FIG. 3 is not shown.
  • FIG. 14 (b) shows only one illumination panel and the configuration in the vicinity thereof, and corresponds to a portion provided with a dashed line in FIG. 14 (a).
  • the adjusting means 30 is disposed on one side of the lighting panel 10 along the central axis portion along the longitudinal direction of the lighting panel 10. More specifically, it is arranged between one side of the lighting panel 10 and the ladder cord 6 that crosses the lighting panel 10 in the minor axis direction.
  • the length of the adjusting unit 30 along the short axis direction of the lighting panel 10 is one-tenth to one-half the length of the short axis of the lighting panel 10, illumination is performed by a mechanism described later. Since the panel 10 can be curved, it is preferable. If the ratio is less than one tenth, the slats cannot be sufficiently pressurized. If the ratio exceeds one half, only the central portion of the illumination panel 10 cannot be pressurized, so that it is difficult to curve the illumination panel 10. There is a fear.
  • the adjusting means 30 may be fixed to the ladder cord 6 that crosses the illumination panel 10 along the direction of the short axis.
  • the present invention is not limited to this, and may be fixed to one side of the lighting panel 10 or may be fixed to both the ladder cord 6 and one side of the lighting panel 10.
  • the illumination panel 10 of the present embodiment is configured to emit light upward when the surface of the illumination panel 10 is leveled as shown in FIG. To do.
  • the adjusting means 30 is on the side opposite to the light exit surface side (referred to as the back side) of the lighting panel 10 and receives the tension of the ladder code 6 that is close to the adjusting unit 30, and the back side of the lighting panel 10.
  • the lighting panel 10 is pressurized toward the light exit surface side.
  • the lighting panel 10 that has been pressed by the adjusting means 30 has a region facing the adjusting means 30, that is, only the central axis portion of the lighting panel 10 protrudes in the pressing direction, and is curved as shown in FIG. It will be in the state. Thereby, the light emitted from the illumination panel 10 becomes diffused light compared to the light emitted from the flat illumination panel 10 shown in FIG.
  • the diffused light can be used to illuminate the room widely.
  • the material of the adjusting means 30 is not particularly limited to organic and inorganic materials as long as the lighting panel 10 can be pressurized, but a plastic material is preferable.
  • a known material can be used as the plastic material, and examples thereof include polyethylene and polypropylene.
  • a material having light transmittance as the adjustment unit 30 is used.
  • the shape of the adjusting means 30 is not particularly limited as long as it is adhered to the ladder cord 6 that traverses the lighting panel 10 in the minor axis direction.
  • the lighting panel 10 having plasticity is curved according to the rotation of the lighting panel 10. That is, the illumination panel shape can be reversibly changed to an arbitrary curvature radius along the minor axis direction. By reversibly changing the illumination panel to the radius of curvature, the light emitted from the organic EL element disposed on the illumination panel can be diffused or condensed.
  • the adjusting means 30 As described above, when the light emitting surface side of the organic EL lighting device 1 is curved in a convex shape, the light of the organic EL lighting device 1 can be easily diffused, The room or space in which the organic EL lighting device 1 is installed can be illuminated in a wide range. On the other hand, when the light emission surface side of the organic EL lighting device 1 is curved in a concave shape, the light of the organic EL lighting device 1 Can be easily condensed, and it is possible to intensively illuminate a point or a surface that is close to the installation position of the organic EL lighting device 1.
  • illuminating devices such as an inorganic electroluminescent illuminating device, plasma illumination, or a field emission lamp (FEL; Field Emission Lamp), may be sufficient, for example.
  • the organic EL lighting device 1 may be used as a lighting device as an organic thin film solar cell, an organic transistor (organic FET), or the like. Even in these cases, the wiring function for supplying power to each panel is provided, and the voltage drop phenomenon can be prevented by laying many power supply source wirings at short intervals without increasing extra wiring. Uniform light emission lighting can be provided. In addition, the illuminance of the room where the lighting device is installed can be efficiently increased without blocking the light emitted from the lighting panel.
  • Example 1 An organic EL lighting device employing a strip-shaped RGB laminated white organic EL element having a length of 450 mm and a width of 50 mm was produced.
  • Example 1 glass substrates having a length of 1000 mm, a width of 70 mm, and a thickness of 0.7 mm were used as the first substrate 17 and the second substrate 18 shown in FIG.
  • Conductive wiring having a thickness of 100 nm was formed on the surface of the first substrate 17 under a water pressure of 6 ⁇ 10 ⁇ 4 Pa.
  • Two organic EL elements 20 were arranged on the first substrate 17, and the conductive wiring 9 of the first substrate 17 and the organic EL element 20 were connected. Then, the 1st board
  • the produced lighting panels were placed on a ladder cord connecting the head box and the bottom rail, and a lifting cord was arranged near the short side of each lighting panel, and then the ladder cord and the lighting panel were connected. Specifically, the conductive wiring of the lighting panel and the branch wiring connected to the ladder cord were connected by lead-free solder. In this way, an organic EL lighting device was obtained.
  • the lighting panel is tilted so as to be vertical (the organic EL lighting device is fully opened)
  • the height of the organic EL lighting device is 1550 mm.
  • the chromaticity of the obtained organic EL lighting device was measured using a color luminance meter BM-5A manufactured by Topcon Corporation, the chromaticity was (0.33, 0.33). Further, when the color temperature was measured with a spectral radiance meter MCPD-7000 manufactured by Otsuka Electronics Co., Ltd., the color temperature was 5600K daylight white light emission. The emission luminance measured by the luminance meter was 50000 cd / m 2 at 17V.
  • the obtained organic EL lighting device was subjected to a test of winding and unwinding 10,000 times using a lifting / lowering cord, but no change was observed in the performance of the organic EL lighting device.
  • Example 2 An organic EL lighting device that employs organic EL elements in which one organic EL element is painted in three colors (red, green, and blue) was produced. Other configurations are the same as those in the first embodiment. Voltage is applied to each conductive wiring so that the lighting rate of each of the red (R), green (G), and blue (B) emission colors of the manufactured organic EL lighting device is 30%, 22%, and 60%. Applied.
  • Example 2 In the same manner as in Example 1, the chromaticity and color temperature of the obtained organic EL lighting device were measured.
  • the chromaticity was (0.31, 0.33), and the color temperature was 6800K daylight emission.
  • Example 3 In the same manner as in Example 2, an organic EL lighting device employing organic EL elements in which one organic EL element was applied in three colors was produced. However, in each of the conductive wirings, the lighting rate of each of the red (R), green (G), and blue (B) emission colors of the manufactured organic EL lighting device is 46%, 28%, and 50%. A voltage was applied. Other configurations are the same as those in the first embodiment.
  • Example 2 In the same manner as in Example 1, the chromaticity and color temperature of the obtained organic EL lighting device were measured.
  • the chromaticity was (0.40, 0.40), and the color temperature was 3800K bulb light emission.
  • Example 4 An organic EL lighting device employing three types of organic EL elements, a red light emitting organic EL element, a green light emitting organic EL element, and a blue light emitting organic EL element, was produced. Voltage is applied to each conductive wiring so that the lighting rate of each of the red light emitting organic EL element, the green light emitting organic EL element, and the blue light emitting organic EL element of the manufactured organic EL lighting device is 32%, 20%, and 58%. Applied. Other configurations are the same as those in the first embodiment.
  • Example 2 In the same manner as in Example 1, the chromaticity and color temperature of the obtained organic EL lighting device were measured.
  • the chromaticity was (0.31, 0.33), and the color temperature was 6800K daylight emission.
  • Example 5 In the same manner as in Example 2, an organic EL lighting device employing organic EL elements in which one organic EL element was applied in three colors was produced. However, the lighting rate of each of the emission colors of red (R), green (G), and blue (B) of the produced organic EL lighting device was changed over time to an arbitrary value of 0 to 100%. As a result, the organic EL lighting device as a whole was able to emit light whose intensity and color were changed in gradation.
  • R red
  • G green
  • B blue
  • Example 6 In the same manner as in Example 2, an organic EL lighting device employing organic EL elements in which one organic EL element was applied in three colors was produced. However, it set so that the lighting rate of each luminescent color of red (R), green (G), and blue (B) of the produced organic electroluminescent illuminating device could be controlled with a remote control device (remote controller). Then, during the lighting of the organic EL lighting device, the lighting rate of each emission color was set to an arbitrary value of 0 to 100% with the remote control device. As a result, it was possible to set the light emission intensity and the light emission color to desired values for the entire organic EL lighting device.
  • a remote control device remote controller
  • the non-uniformity of the element characteristics due to the voltage drop of the element electrode can be suppressed by adopting the connection structure with the element electrode via the ladder cord.
  • an integrated EL lighting device with high luminance uniformity can be obtained.
  • the integrated illumination device may use one organic EL element that is separately applied to RGB, or three kinds of RGB organic EL elements.
  • the lighting rate of each emission color may be set to an arbitrary value, a desired emission intensity and emission color can be realized.
  • Example 5 various emission intensity and emission colors can be obtained by changing the lighting rate of each emission color of the integrated illumination device to an arbitrary value over time. Furthermore, if the lighting rate of each luminescent color can be controlled like Example 6, it can be set as the structure which can select the lighting rate of each luminescent color of an integrated illuminating device to arbitrary values at any time. That is, the integrated lighting device can have a dimming function and a toning function.
  • the lighting device is as described above.
  • a plurality of strip-shaped lighting panels each having an electrode and a light-emitting element that emits light when voltage is supplied to the electrode;
  • the winding cord is disposed along the arrangement direction, A winding cord configured to be able to adjust the length of the array;
  • a support cord that varies the surface angle of the lighting panel while supporting the plurality of lighting panels;
  • a lighting device comprising:
  • the support cord includes a first cord disposed along the arrangement direction on one long side of two long sides facing each other along the major axis direction of each lighting panel, and the first cord A pair of cords, and a second cord disposed along the arrangement direction on the other long side of the two long sides,
  • the first cord and the second cord both have conductivity, and the first cord, the conductive portion of the second cord, and the electrode provided in the light emitting element are
  • the electrodes of the light-emitting element are an anode and a cathode
  • the light emitting element is The anode and a connection for electrically connecting the anode and the first cord to the one long side of the lighting panel where the first cord of the support cord is disposed Part is provided,
  • the cathode, and the connection for electrically connecting the cathode and the second cord to the other long side of the lighting panel where the second cord of the support cord is disposed It is characterized in that a part is provided.
  • the plurality of lighting panels are held by the winding cord. Further, the length of the winding cord can be changed. By changing the length of the winding cord, the length of the arranged lighting panels can be adjusted. Specifically, the winding cord has a variable length by being wound or fed by an instrument such as a rod.
  • the multiple lighting panels are supported by a support cord.
  • the support cord can be moved by an instrument such as a rod to vary the surface angle of the lighting panel relative to a certain direction.
  • This support cord corresponds to a ladder cord used in a general blind device.
  • the arrangement position of each lighting panel can be adjusted by an instrument. Specifically, the arrangement position and the inclination of the plurality of lighting panels can be adjusted by moving the winding cord and the support cord with the instrument.
  • a rod or the like can be applied as the above-mentioned instrument.
  • a notable configuration is such that the support cord can supply a voltage to the electrode of the light emitting element, and the positive voltage is applied to the first cord.
  • the negative voltage is applied to the second cord. That is, the support cord also has a wiring function.
  • a support cord that supports each lighting panel and a wiring cord that applies a voltage to each lighting panel are provided separately and outside the short side of the lighting panel. Since only one place is provided at the end of the panel as a wiring, a voltage drop phenomenon may occur and light emission spots may be generated.
  • a wiring function for supporting the lighting panel and supplying power to each lighting panel is added to the support cord that changes the inclination.
  • the lighting panel is configured to electrically connect the anode and the first cord to the one long side of the lighting panel in which the first cord of the support cord is disposed.
  • the cathode and the second cord are electrically connected to the other long side of the lighting panel on which the second cord of the support cord is disposed.
  • the cathode side connection part for connecting to is provided.
  • a light-emitting element using an organic EL or the like has a configuration in which positive and negative (positive / negative) electrodes are arranged above and below a light-emitting layer, and light is emitted by passing a current between the electrodes. Since light emission is extracted from one side in the vertical direction, it is necessary to use a transparent electrode such as an oxide at least for the electrode on the light extraction side.
  • the conductivity of a transparent electrode such as an oxide is lower than that of a metal electrode such as Al. For this reason, as the transparent electrode is separated from the contact portion with the power supply wiring, the voltage drop due to the resistance of the electrode increases, and thus the light emission luminance decreases.
  • a transparent electrode such as an oxide
  • a metal electrode such as Al
  • the lighting device includes: It is preferable that a plurality of the first cords and the second cords that are paired are provided at predetermined intervals along the major axis direction of the lighting panel.
  • the illuminating device which concerns on this invention is It is preferable that the lighting panel is provided with metal wiring as the anode-side connection portion or the cathode-side connection portion along the end portion on the long side.
  • the metal wiring since the metal wiring has high conductivity, the voltage drop in the slat long side direction as described above can be suppressed, so that the luminance reduction in the long side direction can be reduced.
  • the illuminating device which concerns on this invention is
  • Each of the first cord and the second cord of the support cord has a branch wiring connected to the electrode of the light emitting element, The contact point between the support cord and the branch wiring is preferably fixed.
  • the power supply from the support cord to each lighting panel is stabilized by fixing the contact point between the support cord and the branch wiring.
  • the illuminating device which concerns on this invention is
  • the light emitting element preferably includes a flexible substrate.
  • an organic EL element can be manufactured as the light-emitting element by using a roll-to-roll manufacturing method. Thereby, even when an organic EL element is mounted, it is possible to reduce the initial investment for introducing the apparatus, the running cost, and the like.
  • the illuminating device which concerns on this invention is Each of the lighting panels is preferably curved along the minor axis direction.
  • an illuminating device capable of making light emitted from the light emitting element into divergent light (diffused light) or condensing it.
  • the range of the lighting device design according to the present invention is widened.
  • the illuminating device which concerns on this invention is
  • the lighting panel is preferably curved with the light emitting surface side of the light emitting element convex.
  • the light of the lighting device can be easily diffused, and the room or space where the lighting device is installed can be illuminated over a wide area.
  • the illumination device according to the present invention is The illumination panel may be curved with the light emitting surface side of the light emitting element concave.
  • the illuminating device which concerns on this invention is It is preferable that the lighting panel is bendable along the minor axis direction, and further includes adjusting means for adjusting the curvature rate of the lighting panel.
  • the curvature of the illumination panel can be adjusted as appropriate, so that the curvature of the illumination panel can be set to a desired value. Therefore, when the light emission surface side of the light emitted from the light emitting element is curved in a convex shape, the emitted light can be easily diffused to illuminate a room or space where the integrated illumination device is installed over a wide area. In addition, when the light emitting surface side of the light emitted from the light emitting element is curved in a concave shape, the emitted light can be easily collected, and a point or surface close to the installation position of the integrated lighting device can be concentrated. It can be illuminated.
  • the illuminating device which concerns on this invention is
  • the light-emitting element preferably has a plurality of emission colors and is configured to be driven independently for each emission color.
  • the integrated lighting device can be provided with toning and dimming properties.
  • the illuminating device which concerns on this invention is
  • the electrodes are an anode and a cathode.
  • the electrode located on the side opposite to the light exit surface preferably comprises a light-reflective material.
  • the illuminating device which concerns on this invention is
  • the electrodes are an anode and a cathode, and at least one of the anode and the cathode is preferably a transparent electrode.
  • the light emitted from the light emitting element is emitted from the transparent electrode side, and the light can be efficiently taken out of the element. Further, by making the electrode on the light extraction side a transparent electrode, light can be condensed by a microcavity (microresonator) effect. As a result, an improvement in luminous efficiency and an improvement in color purity can be realized, and light can have directivity and the like.
  • microcavity microresonator
  • the illuminating device which concerns on this invention is
  • the lighting panel has a structure in which the light emitting element is disposed between a pair of opposing substrates.
  • the substrate located on the side opposite to the light emitting side is made of a light-reflective material or a material having a light-reflective surface.
  • the gap portion between the pair of substrates is preferably sealed with a light-reflective material or a material having a light-reflective surface.
  • the illuminating device which concerns on this invention is
  • the light emitting element preferably has a resin layer having light diffusibility on the light emitting surface side.
  • the illumination device may have a light diffusing plate having light diffusibility on the light emitting surface side.
  • a light diffusing resin layer is formed on the light emitting surface side or a light diffusing plate is introduced.
  • the emitted light passes through the light diffusing portion and is uniformly diffused and emitted from the light emitting surface, thereby improving the color purity and luminous efficiency of the illumination device and realizing a wide viewing angle. .
  • the substrate on the light emitting surface side may be made of a light diffusing material.
  • the substrate on the light emitting surface side is made of a light diffusing material.
  • the emitted light passes through the light diffusing portion and is uniformly diffused and emitted from the light emitting surface, thereby improving the color purity and luminous efficiency of the illumination device and realizing a wide viewing angle. .
  • the illuminating device which concerns on this invention is
  • the light emitting element preferably has a wavelength conversion layer on the light exit surface side.
  • the light emitted from the organic EL element can be converted into light having a desired wavelength by using the wavelength conversion layer.
  • the illuminating device which concerns on this invention is
  • the light-emitting element preferably has a circularly polarizing plate on the light exit surface side.
  • the circularly polarizing plate can circularly polarize the light emitted from the light emitting element and suppress external light reflection.
  • the illuminating device which concerns on this invention is
  • the light emitting element preferably has a color filter on the light emitting surface side.
  • the color filter can emit only light having a desired wavelength from the light emitted from the light emitting element, and can obtain the effect of suppressing or reducing the reflection of external light.
  • the illuminating device which concerns on this invention is
  • the light emitting element is an organic EL element having an anode and a cathode as the electrodes,
  • the organic EL device preferably further has a charge generation layer.
  • the holes propagated from the anode and the electrons propagated from the cathode can be efficiently propagated to the light emitting region.
  • the charge generation region is formed between the organic EL layers, and by forming an equipotential surface between adjacent light emitting regions, the driving current is increased while the flowing current is reduced, and the excellent light emission life Can be obtained.
  • the illuminating device which concerns on this invention is
  • the light emitting element is an organic EL element having an anode and a cathode as the electrodes,
  • the cathode is formed by co-evaporating magnesium and silver in a ratio of 1: 9.
  • the organic EL element preferably has an electron injection layer made of lithium fluoride.
  • the illuminating device which concerns on this invention is
  • the light emitting element is an organic EL element having an anode and a cathode as the electrodes
  • the organic EL element has an organic layer including a light emitting region, and the organic layer is preferably composed of a both charge transporting material.
  • both charge transport materials can propagate the hole inject
  • the illuminating device which concerns on this invention is
  • the light emitting element is an organic EL element having an anode and a cathode as the electrodes,
  • the light emitting region is formed by doping the both charge transporting materials with a light emitting dopant,
  • An electron blocking region formed by the both charge transporting material and the electron blocking material between the anode and the light emitting region;
  • a hole blocking region formed by the both charge transporting material and hole blocking material between the cathode and the light emitting region;
  • the first condition that the charge transporting material constituting the electron blocking region has a lowest empty orbit higher than the lowest empty orbit of the charge transporting material constituting the light emitting region, and the hole
  • the charge transporting material constituting the blocking region has at least any one of the second conditions that the highest occupied track is shallower than the highest occupied track of the charge transporting material constituting the light emitting region. It is preferable that these conditions are satisfied.
  • the electron blocking region for blocking the movement of electrons and the hole blocking region for blocking the movement of holes are provided across the light emitting region formed by both charge transport materials. For this reason, the holes propagated from the anode and the electrons propagated from the cathode are confined in the light emitting region, so that the probability that holes and electrons recombine in the light emitting region is increased, and the driving voltage of the organic EL element is reduced. Can be lowered.
  • the probability of recombination of holes and electrons in the light emitting region is increased, the internal quantum yield can be improved and the light emission efficiency can be improved.
  • the illuminating device which concerns on this invention is A power source that is a supply source for supplying a voltage to the electrode provided in the light emitting element; A voltage or a current can be supplied from the power source to the electrode of the light emitting element via the first cord and the second cord. It is preferable that a positive voltage from the power source is applied to the first cord, and a negative voltage from the power source is applied to the second cord.
  • the manufacturing method of the illuminating device concerning this invention
  • a plurality of strip-shaped lighting panels each having an electrode and a light-emitting element that emits light when voltage is supplied to the electrode;
  • a winding cord disposed along the arrangement direction, A winding cord configured to be able to adjust the length of the array;
  • a support cord that varies the surface angle of the lighting panel while supporting the plurality of lighting panels;
  • a method of manufacturing a lighting device comprising: A lighting panel forming step for forming the lighting panel in which the light emitting element is disposed; Preparing a support cord having conductivity, and including a connecting step of connecting a conductive portion of the support cord and the electrode of the light emitting element; In the connection step, a first cord disposed along the arrangement direction on one long side of two long sides facing each other along the long axis direction of the arranged lighting panels
  • the wiring function for supplying power to each lighting panel is added to the support cord that changes the inclination of the plurality of lighting panels. Accordingly, it is possible to avoid blocking the light emission of the lighting panel by the wiring cord as compared with the case where a wiring cord is separately provided, and the room where the lighting device is installed can be illuminated with high illuminance.
  • the lighting panel forming step includes an organic electroluminescent element forming step of forming, as the light emitting element, an organic electroluminescent element in which at least an anode, an organic layer including a light emitting region, and a cathode are formed in this order on the substrate.
  • the organic electroluminescence element is preferably formed by a roll-to-roll method.
  • an integrated illumination device having a large area can be realized, and the manufacturing cost can be kept low.
  • the lighting panel forming step includes an organic electroluminescent element forming step of forming, as the light emitting element, an organic electroluminescent element in which at least an anode, an organic layer including a light emitting region, and a cathode are formed in this order on the substrate.
  • the charge transporting material is doped with a light emitting dopant to form the light emitting region, and the charge transporting material and the electron blocking material are formed between the anode and the light emitting region.
  • An electron blocking region is formed between the cathode and the light emitting region by the charge transporting material and the hole blocking material, and the electron blocking region and the hole blocking region are formed. Of these, at least one of them is preferably formed by vapor deposition polymerization.
  • a stable electron blocking region and hole blocking region can be formed by a simple method called vapor deposition polymerization.
  • the lighting panel forming step includes an organic electroluminescent element forming step of forming, as the light emitting element, an organic electroluminescent element in which at least an anode, an organic layer including a light emitting region, and a cathode are formed in this order on the substrate. And In the organic electroluminescence element forming step, it is preferable to perform heat treatment at the same time as or after vapor deposition of at least one material constituting the organic layer under vacuum conditions.
  • the method of manufacturing the lighting device according to the present invention includes:
  • the lighting panel forming step includes an organic electroluminescent element forming step of forming, as the light emitting element, an organic electroluminescent element in which at least an anode, an organic layer including a light emitting region, and a cathode are formed in this order on the substrate.
  • the organic electroluminescence element forming step it is preferable to irradiate ultraviolet rays at the same time as or after vapor deposition of at least one material constituting the organic layer under vacuum conditions.
  • the substrate is heated by heat treatment or ultraviolet irradiation, the reaction is accelerated, (1) vapor deposition polymerization can be completed, and (2) the degree of polymerization can be controlled. Furthermore, the molecular orientation in the deposited film can be controlled by heat treatment.
  • the method of manufacturing the lighting device according to the present invention includes: In the organic electroluminescence element forming step, it is preferable to perform heat treatment after the irradiation with the ultraviolet rays.
  • the substrate is heated by ultraviolet irradiation, the reaction is accelerated, (1) vapor deposition polymerization can be completed, and (2) the degree of polymerization can be controlled. Then, the molecular orientation in the deposited film can be controlled by performing the heat treatment thereafter.
  • the method of manufacturing the lighting device according to the present invention includes: In the organic electroluminescence element forming step, it is preferable to form a pattern using a mask when the ultraviolet rays are irradiated.
  • the lighting device according to the present invention can be suitably used as a blind type lighting device, for example, as various lighting devices such as office lighting, store lighting, or facility lighting.
  • Organic EL lighting device (lighting device) 2 Headbox 3 Lifting cord (winding cord) 4 Bottom rail 5 Branch wiring 6 Ladder cord (support cord) 7 Rod (equipment) 8 Connection wiring 9 Conductive wiring 10 Illumination panel 10 ′ Organic EL panel 11 Support substrate 11 ′ Film tape 12 First electrode 13 Organic EL layer 14 Second electrode 15 Protective layer 16 Hole (guide part) 17 First substrate 18 Second substrate 19 Resin 20 Organic EL element (light emitting element) 21 grip 22 roll 23 forming part

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un dispositif d'éclairage comprenant un réseau de panneaux d'éclairage (10) et pourvu de cordons d'échelle (6) pouvant modifier l'angle de surface des panneaux d'éclairage (10) et de cordons de levage (3) destinés à régler la longueur des panneaux d'éclairage (10) en réseau, les cordons d'échelle (6) étant des fils électriques, ce qui permet d'appliquer une tension sur les électrodes d'éléments électroluminescents organiques contenus dans les panneaux d'éclairage (10).
PCT/JP2011/059958 2010-07-06 2011-04-22 Dispositif d'éclairage et procédé de fabrication associé WO2012005045A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010154188 2010-07-06
JP2010-154188 2010-07-06

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WO2012005045A1 true WO2012005045A1 (fr) 2012-01-12

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128299U (ja) * 1982-02-24 1983-08-31 立川ブラインド工業株式会社 採光用ブラインド
JPS6314796U (fr) * 1986-07-11 1988-01-30
JP2000503163A (ja) * 1996-10-15 2000-03-14 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 電界発光照明システム
JP2001082058A (ja) * 1999-09-09 2001-03-27 Sony Corp ブラインド装置
JP2002069013A (ja) * 2000-07-03 2002-03-08 Korea Res Inst Chem Technol アセチレン基を含む有機化合物、その蒸着重合法、その蒸着重合薄膜及びその薄膜を使用した電気発光素子
JP2002164170A (ja) * 2000-11-27 2002-06-07 Matsushita Electric Works Ltd 白色有機エレクトロルミネッセンスパネル
JP2003272860A (ja) * 2002-03-26 2003-09-26 Junji Kido 有機エレクトロルミネッセント素子
JP2004296429A (ja) * 2003-03-07 2004-10-21 Nitto Denko Corp 有機エレクトロルミネッセンス素子とこの素子を用いた面光源および表示装置
JP2005163036A (ja) * 2003-11-18 2005-06-23 Chi Mei Electronics Corp 発光材料としてのイリジウム錯体および有機発光ダイオードデバイス
JP2009158691A (ja) * 2007-12-26 2009-07-16 Sharp Corp 有機デバイスおよびその製造方法
JP2009176633A (ja) * 2008-01-28 2009-08-06 Panasonic Electric Works Co Ltd 面状発光型照明システムおよびその駆動方法
JP2009266804A (ja) * 2008-03-31 2009-11-12 Yamagata Promotional Organization For Industrial Technology 照明器具の給電装置
JP2010055919A (ja) * 2008-08-28 2010-03-11 Seiko Epson Corp 発光装置および電子機器、発光装置の製造方法

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128299U (ja) * 1982-02-24 1983-08-31 立川ブラインド工業株式会社 採光用ブラインド
JPS6314796U (fr) * 1986-07-11 1988-01-30
JP2000503163A (ja) * 1996-10-15 2000-03-14 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 電界発光照明システム
JP2001082058A (ja) * 1999-09-09 2001-03-27 Sony Corp ブラインド装置
JP2002069013A (ja) * 2000-07-03 2002-03-08 Korea Res Inst Chem Technol アセチレン基を含む有機化合物、その蒸着重合法、その蒸着重合薄膜及びその薄膜を使用した電気発光素子
JP2002164170A (ja) * 2000-11-27 2002-06-07 Matsushita Electric Works Ltd 白色有機エレクトロルミネッセンスパネル
JP2003272860A (ja) * 2002-03-26 2003-09-26 Junji Kido 有機エレクトロルミネッセント素子
JP2004296429A (ja) * 2003-03-07 2004-10-21 Nitto Denko Corp 有機エレクトロルミネッセンス素子とこの素子を用いた面光源および表示装置
JP2005163036A (ja) * 2003-11-18 2005-06-23 Chi Mei Electronics Corp 発光材料としてのイリジウム錯体および有機発光ダイオードデバイス
JP2009158691A (ja) * 2007-12-26 2009-07-16 Sharp Corp 有機デバイスおよびその製造方法
JP2009176633A (ja) * 2008-01-28 2009-08-06 Panasonic Electric Works Co Ltd 面状発光型照明システムおよびその駆動方法
JP2009266804A (ja) * 2008-03-31 2009-11-12 Yamagata Promotional Organization For Industrial Technology 照明器具の給電装置
JP2010055919A (ja) * 2008-08-28 2010-03-11 Seiko Epson Corp 発光装置および電子機器、発光装置の製造方法

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