WO2011102389A1 - 集積型照明装置、およびその製造方法 - Google Patents
集積型照明装置、およびその製造方法 Download PDFInfo
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- WO2011102389A1 WO2011102389A1 PCT/JP2011/053286 JP2011053286W WO2011102389A1 WO 2011102389 A1 WO2011102389 A1 WO 2011102389A1 JP 2011053286 W JP2011053286 W JP 2011053286W WO 2011102389 A1 WO2011102389 A1 WO 2011102389A1
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- Prior art keywords
- organic
- light
- integrated
- cord
- lighting
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/38—Other details
- E06B9/386—Details of lamellae
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/38—Other details
- E06B9/384—Details of interconnection or interaction of tapes and lamellae
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/16—Adjustable mountings using wires or cords
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/36—Hoisting or lowering devices, e.g. for maintenance
- F21V21/38—Hoisting or lowering devices, e.g. for maintenance with a cable
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/247—Electrically powered illumination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0012—Furniture
- F21V33/0016—Furnishing for windows and doors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/006—General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
- F21Y2115/15—Organic light-emitting diodes [OLED]
Definitions
- the present invention relates to an integrated illumination 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 excellent characteristics such as self-emission, wide viewing angle, and high-speed response.
- Organic EL elements generally have an organic layer having a light emitting layer on a transparent substrate between a first electrode (anode) that is a transparent electrode and a second electrode (cathode) that is a reflective electrode.
- the organic layer generally has a hole transport layer, an electron transport layer, and the like in addition to the light emitting layer.
- 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.
- a method of manufacturing a large light source device by mounting a plurality of small-area organic EL elements manufactured by a medium vacuum film forming apparatus has been adopted.
- a light source device having a large-area light emitting surface can be manufactured by a simple method, and (2) development is progressing compared to the wet process. Therefore, the manufacturing method with high luminous efficiency, which is currently an advantage of vacuum deposition manufacturing, can be applied.
- the vacuum system of the manufacturing apparatus can be reduced, the fixed cost for introducing the apparatus is reduced, and It is highly feasible for reasons such as shortening tact time.
- a light source device in which a plurality of strip-shaped organic EL elements are mounted is called a blind illumination device or the like because of its shape, and is becoming widespread as a planar light source device.
- Patent Literature 1 discloses a blind illumination device in which a plurality of slats mounted with a light emitter that emits light using electrical energy generated by a solar cell are integrated.
- the blind illumination device disclosed in this document includes a solar battery, a secondary battery, and a light emitter.
- the secondary battery stores the electrical energy generated by the solar battery, and the light emitter emits light by voltage supply of the secondary battery.
- a solar cell is disposed on a light shielding surface of a slat that is a blind plate (blade), and the solar energy is converted into electric energy at the time of light shielding. According to this, solar energy can be effectively used by converting the solar energy that is shielded from light into electric energy and using it for room lighting.
- Japanese Patent Publication Japanese Patent Laid-Open No. 2001-82058 (published on March 27, 2001)
- the blind illumination device disclosed in Patent Document 1 described above also has a function as a blind for a light-shielding interior in a normal window treatment. That is, when the blind illumination device is not used, it can be rolled up and folded. At this time, the wiring for transmitting the signal for controlling the light emitting state and the non-light emitting state of the light emitter of the blind illumination device to the slat is provided in the peripheral portion on the short axis side of the blind illumination device. Therefore, when the blind illumination device is rolled up and folded, the wiring portion is bent. As a result, local stress concentration on the wiring occurs, causing deterioration of the wiring material, the protective cover material of the wiring, and the like.
- the present invention has been made in view of the above problems, and its purpose is to disperse the local stress concentration on the wiring of each lighting panel and prevent the deterioration of the wiring material and the protective cover material of the wiring.
- an integrated lighting device configured to wind up or unwind a plurality of lighting panels having organic electroluminescence elements, a cord that holds the plurality of lighting panels, and the cord.
- an integrated lighting device comprising an appliance for adjusting the arrangement positions of the plurality of lighting panels by moving the cord, wherein the cord has electrical conductivity, and the cord is electrically conductive.
- the portion and the electrode of the organic electroluminescence element are electrically connected.
- the plurality of lighting panels are held by the cord, and the cord and the electrode of the organic EL element are electrically connected to each other. Further, the cord can be wound or unwound by an instrument. Therefore, the cord has a function of holding a plurality of lighting panels and winding up each lighting panel, and also has a function of supplying power to each organic EL element.
- the arrangement position of each lighting panel can be adjusted by an instrument. Specifically, the arrangement position (height, inclination, and distance between panels) of the plurality of lighting panels can be adjusted by moving the cord with the instrument.
- a rod or the like can be applied as the above-mentioned fixture.
- a wiring function for supplying power to each lighting panel is added to the cord that holds the plurality of lighting panels. Accordingly, even when the cord having the wiring function is wound when the plurality of lighting panels are stacked and gathered, since the radius of curvature is large, the concentration of local stress on the cord can be dispersed. Therefore, the deterioration of the cord is not induced and the cord can be prevented from being disconnected.
- a method of manufacturing an integrated lighting device comprising an instrument for adjusting the arrangement position of the plurality of lighting panels by moving the cord, and an organic layer including at least an anode and a light emitting region on the substrate, and An organic electroluminescence element forming step for forming the organic electroluminescence element by sequentially forming a cathode, and the lighting panel is formed by sealing the organic electroluminescence element between the first substrate and the second substrate.
- the organic electroluminescence A connecting step of connecting elements of an anode and a cathode, respectively is characterized in that it comprises a device formation step of forming the instrument.
- the concentration of local stress on the cord is reduced, the cord deterioration is not induced, and the integrated lighting can prevent the cord from being disconnected.
- a device is realized.
- the cord that suspends each lighting panel has a function as wiring for supplying power to each lighting panel. Therefore, when winding the cord and winding up each lighting panel, the wiring of the integrated lighting device is wound without bending. Accordingly, since the cord, that is, the wiring does not bend when each lighting panel is rolled up, the concentration of local stress on the wiring can be suppressed, the deterioration of the wiring is not induced, and the disconnection of the wiring can be prevented. Further, by mounting a plurality of small organic EL elements, a large-area integrated lighting device can be realized, and the manufacturing cost can be kept low.
- 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.
- (A) in a figure is the schematic which shows the roll toe roll vapor deposition apparatus which forms an organic EL element
- (b) in the figure is a figure which shows the state which has arrange
- (C) in the drawing is a diagram showing a step of arranging the second substrate so as to cover the first substrate, and (d) in the drawing shows a plurality of steps between the head box and the bottom rail. It is a figure which shows the state by which the illumination panel of this is arrange
- FIG. 1 is a schematic view showing an organic EL lighting device 1.
- the organic EL lighting device 1 includes, for example, office lighting, store lighting, facility lighting, stage lighting, stage lighting, outdoor lighting, house lighting, display lighting (pachinko machines, vending machines, or freezing / refrigeration shows). Case, etc.), equipment / furniture built-in lighting, evacuation guidance lighting, or local lighting.
- the organic EL lighting device 1 includes a head box 2, a lifting / lowering cord (cord) 3, a bottom rail 4, a branch wiring 5, a ladder cord (supporting cord) 6, a rod (equipment) 7, and a lighting panel. 10.
- the rod 7 is an example of an instrument that winds the lifting cord 3.
- a plurality of lighting panels 10 are disposed between the head box 2 and the bottom rail 4. Specifically, the plurality of lighting panels 10 are suspended and held by a lifting / lowering cord 3 extending from the head box 2, and the lifting / lowering cord 3 has conductivity.
- Each lighting panel 10 is electrically connected to the lifting / lowering cord 3 by a branch wiring connected to the conductive portion of the lifting / lowering cord 3.
- the lighting panel 10 is an organic EL panel covered with a second substrate. Details of the organic EL panel are shown in FIG. FIG. 2 is a schematic view showing the organic EL panel 10 ′. As shown in FIG. 2, the organic EL panel 10 ′ has a plurality of organic EL elements 20 arranged on the first substrate 17. A plurality of holes 16 are provided on the first substrate 17, and the lifting / lowering cord 3 is configured to pass through the holes 16. In FIG. 2, the configuration in which the two organic EL elements 20 are arranged on the first substrate 17 is shown, but the configuration is not necessarily limited thereto. For example, one organic EL element 20 or three or more organic EL elements 20 may be arranged on the first substrate 17.
- each lighting panel 10 is placed on the ladder cord 6. That is, each lighting panel 10 is supported by the ladder cord 6.
- the rod 7 is connected to the tip of the lifting / lowering cord 3 in the head box 2, and the lifting / lowering cord 3 is wound up in the vertical direction by pulling the grip 21 at the tip of the rod 7.
- the illumination panel 10 is also configured to be rolled up. Thus, by winding up the lifting / lowering cord 3 at the tip of the rod 7, the arrangement positions of the plurality of lighting panels 10 can be adjusted.
- the lifting / lowering cord 3 suspending the plurality of lighting panels 10 is configured to be wound into the head box 2 at the same time as the bottom rail 4 and the lighting panel 10 are wound up.
- the ladder cord 6, and the bottom rail 4 and the lighting panel 10 are wound up and wound into the head box 2 at the same time.
- the lifting / lowering cord 3 is configured to be wound into the head box 2 by the rod 7 or to be drawn out from the head box 2.
- the lifting / lowering cord 3 is wound without being bent, so that local concentration of stress on the lifting / lowering cord 3 can be dispersed.
- local concentration of stress on the lifting / lowering cord 3 occurs, and it is possible to prevent the lifting / lowering cord 3 from being broken due to deterioration. This will be described in detail later.
- FIG. 3 is a view showing a cross section of the illumination panel 10.
- the illumination panel 10 is provided with a second substrate 18 so as to face the first substrate 17 having a plurality of organic EL elements 20.
- the first substrate 17 and the second substrate 18 are connected by a resin 19.
- the first substrate 17 is provided with a plurality of holes 16, and the second substrate 18 is also provided with a plurality of holes 16 at positions facing the holes 16 of the first substrate 17.
- the holes 16 are preferably provided at locations other than the centers of the first substrate 17 and the second substrate 18. According to this, since the hole 16 is formed at a place other than the center of each lighting panel 10, a large light-emitting portion of each lighting panel 10 can be obtained, so that luminance and illuminance can be increased.
- the lifting / lowering cord 3 passes through the hole 16, and the branch wiring 5 connected from the lifting / lowering cord 3 is connected to the conductive wiring 9 disposed on the first substrate 17.
- the conductive wiring 9 is connected to the organic EL element 20 via the connection wiring 8.
- each organic EL element 20 is electrically connected to the lifting / lowering cord 3. That is, each lighting panel 10 is suspended by the lifting / lowering cord 3 and is electrically connected.
- the lighting panel 10 has a plurality of organic EL elements 20 mounted thereon. Details of the organic EL element 20 are shown in FIG. FIG. 4 is a view showing a cross section of the organic EL element 20.
- the organic EL element 20 is configured by laminating a first electrode 12, an organic EL layer 13, and a second electrode 14 in this order on a support substrate 11. At this time, in order to protect both electrodes and the organic EL layer 13, it is preferable to provide the protective layer 15 so as to cover the surface of the second electrode.
- 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 layer 13 only needs to include at least a light emitting layer, and may have, for example, a three-layer structure in which a hole transport layer, a light emitting layer, and an electron transport layer are stacked. Or 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, A seven-layer structure in which a hole blocking layer, an electron transport layer, and an electron injection layer are stacked may be used.
- 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.
- a single layer structure may be used. According to this, 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 organic layer since the organic layer is a single layer, the organic layer has a light emitting region corresponding to the light emitting layer, a hole blocking region corresponding to the hole blocking layer, an electron blocking region corresponding to the electron blocking layer, and the like.
- the organic EL element 20 can be formed in a rectangular flat plate shape having a width of 50 mm, a length of 450 mm, and a thickness of 0.7 mm, for example, but is not necessarily limited thereto.
- the plurality of lighting panels 10 are arranged on the ladder cord 6 between the head box 2 and the bottom rail 4.
- the plurality of lighting panels 10 are connected to each other by a lifting / lowering cord 3 extending from the head box 2.
- the lifting / lowering cord 3 suspends each lighting panel 10 and also has a function as wiring for supplying power to each lighting panel 10.
- the rod 7 is connected to the tip of the lifting / lowering cord 3 in the head box 2, and the bottom rail 4 and the lighting panel 10 are wound up by pulling the grip 21 at the tip of the rod 7.
- the lifting / lowering cord 3 is wound up in the head box 2 at the same time as the bottom rail 4 and the lighting panel 100 are wound up.
- the lifting / lowering cord 3 has an appropriate clearance so that the lifting / lowering cord 3 does not bend and does not fully extend. According to this, stress concentration on the lifting / lowering cord 3 by the lighting panel 10 hardly occurs. Therefore, disconnection of the lifting / lowering cord 3 due to the concentration of stress on the lifting / lowering cord 3 by the lighting panel 10 can be avoided. Furthermore, it is preferable that the raising / lowering cord 3 is comprised with the material which has a stretching property. According to this, even if stress concentration on the lifting / lowering cord 3 by a plurality of lighting panels 10 occurs, the stress concentration can be reduced, so that the organic EL lighting device 1 can be used for a long time. .
- the lifting / lowering cord 3 that suspends each lighting panel 10 has a wiring function. Therefore, by winding up the lifting / lowering cord 3 when winding up each lighting panel 10, the wiring of the organic EL lighting device 1 is wound up without bending.
- the lifting / lowering cord 3 that is, the wiring does not bend, so that local stress concentration on the wiring can be suppressed. Therefore, the deterioration of the wiring (lifting cord 3) is not induced, and the disconnection of the wiring can be prevented. Further, by arranging a plurality of lighting panels on which a plurality of small organic EL elements are mounted, a large-area integrated lighting device can be realized, and the manufacturing cost can be kept low.
- the present invention is not necessarily limited thereto.
- the connection wiring 8 of each lighting panel 10 is connected to the lifting / lowering cord 3.
- the connection wiring 8 may be extended to the outside of the lighting panel 10 and connected to the lifting / lowering cord 3.
- a single lifting / lowering cord 3 may have a plurality of wiring functions.
- a single lifting / lowering cord 3 can be constituted by a plurality of wirings such as a positive wiring and a negative wiring.
- the wiring function may be distributed using a plurality of lifting / lowering cords 3. Thereby, the voltage which flows through each raising / lowering cord 3 falls, and a light emission spot can be prevented.
- the contact between the lifting / lowering cord 3 and the branch wiring 5 connected to the lifting / lowering cord 3 may be fixed as long as it is electrically connected, or may be movable by sliding. At this time, a plastic cover or the like may be attached so that the branch wiring 5 does not touch other wiring.
- the lifting / lowering cord 3 passes through the hole 16 of each lighting panel 10, but the lighting panel 10 and the lifting / lowering cord 3 are only connected to each other by the branch wiring 5. Further, the illumination panel 10 is only placed on the ladder cord 6. 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 rod 7 to rotate the illumination panel 10 and adjusting the rotation angle. If the function which can adjust the angle of the said lighting panel 10 is provided, the said lighting panel 10 can be adjusted to a desired angle, and the organic electroluminescent illuminating device 1 can be a direct illumination or an indirect illumination. When the organic EL lighting device 1 is not used, each lighting panel 10 can be rolled up by pulling the rod 7.
- 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 up and down (horizontal direction) to be wound up.
- 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 / lowering cord 3 of a Venetian type is called a drive cord, and a vertically held blade (vertical) corresponding to a Venetian type slat (lighting panel 10 held horizontally).
- the lighting panel 10) held in the box is called a louver.
- the organic EL lighting device 1 can adopt not only a multi-rod type but also a cord & 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.
- each member which comprises the illumination panel 10 is demonstrated in detail.
- the first substrate 17 and the second substrate 18 will be described. 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. In this case, even when the organic EL lighting device 1 is bent, the first substrate 17 and the second substrate 18 can be bent, so that it can be handled without any problem.
- substrate 18 may be flat form, and the shape which has a curved surface may be sufficient as it.
- 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 emission surface side of the organic EL lighting device 1 when the light emission 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 organic EL lighting device 1 is installed. It is possible to illuminate a wide area of a room or space. On the contrary, 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 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. Further, a configuration may be provided in which adjusting means capable of appropriately adjusting the curvature of the first substrate 17 and the second substrate 18 is provided.
- an organic / inorganic hybrid layer or a multi-layered film of an organic layer and an inorganic layer may be formed in order to increase gas barrier properties and mechanical strength and reduce gas permeability. good.
- 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. It is also possible to have a configuration in which a region between both substrates is filled with a heat radiation resin having high thermal conductivity.
- a heat radiation resin 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.
- 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 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.
- These conductive wirings 9 form a set of two, one of which is connected to the first electrode 12 of the organic EL element 20 and the other is connected to the second electrode 14.
- 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 conductive wiring 9 electrically connects the branch wiring 5 and the organic EL element 20. Specifically, the conductive wiring 9 connected to the branch wiring 5 is connected to the organic EL element 20 via the connection wiring 8. At this time, 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 resistances of the first electrode 12 and the second electrode 14 can be reduced, and uneven light 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.
- each member which comprises the organic EL element 20 is demonstrated in detail.
- 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 organic EL element 20 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. It becomes possible to illuminate a point or a surface intensively.
- the above-described effects can be achieved by simply bending the organic EL element 20.
- 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. Further, by packing the support substrate 11 from both sides with a substrate having low oxygen permeability or 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, copolymer or terpolymer.
- Acrylic particles such as polyethylene, polystyrene (PS), polypropylene and the like, or a copolymer of acrylic particles and olefin particles.
- PS polystyrene
- 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 are 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. .
- the organic EL layer 13 only needs to 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.
- a host material such as a hole transporting material or an electron transporting material is doped with a light emitting dopant.
- the host material include 4,4′-N, N′-dicarbazolylbiphenyl (CBP).
- a red light emitting dopant is used as a light emitting dopant.
- the red light-emitting dopant include red phosphorescent light-emitting dopants such as bis (1- (phenyl) isoquinolinato-N, C2 ′) iridium (III) (acetylacetonate) ((piq) 2 Ir (acac)).
- 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 a light emitting dopant.
- the green light emitting dopant include green phosphorescent light emitting dopants such as (2-phenylpyridine) iridium (Ir (ppy) 3 ).
- 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 to this thickness.
- a blue light emitting dopant When producing a light emitting layer that emits blue light, 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 (FIrpic).
- 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 include starburst amine 4,4 ′, 4 ′′ -tris (N-3-methylphenyl-N-phenylamino) triphenylamine (m-MTDATA).
- 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 amine compounds such as 4,4 ′, 4 ′′ -tri (N-carbazolyl) triphenylamine (TCTA).
- TCTA triphenylamine
- the thickness can be about 10 nm, but is not necessarily limited thereto.
- the electron blocking layer has a function of blocking the movement of electrons to the anode side.
- the electron blocking material include 4,4'-bis- [N, N '-(3-tolyl) amino-3,3'-dimethylbiphenyl (HMTPD).
- HMTPD 4,4'-bis- [N, N '-(3-tolyl) amino-3,3'-dimethylbiphenyl
- 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 include tris (8-hydroxyquinoline) aluminum (Alq 3 ), 3-phenyl-4 (1′-naphthyl) 5-phenyl-1,2,4-triazole (TAZ), and the like. Can be mentioned.
- 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 (BCP).
- 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.
- 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 recombination probability 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 include a charge generation layer.
- a hole transport layer, a light-emitting layer, a charge generation layer, a hole transport layer, a light-emitting layer, and an electron transport layer are arranged in this order.
- the organic EL layer 13 is formed by laminating. 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 examples 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 protective layer 15 As a material of the protective layer 15, silicon oxynitride etc. are mentioned, for example.
- 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 that converts 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 is a problem when attempting to reproduce high color purity because the spectrum shape is wider and the skirt on the long wavelength side is wider than the light emitted from the inorganic EL element 20.
- 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.
- the illumination panel 10 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. For example, in the case of the illumination panel 10 including the organic EL elements 20 that emit light of different wavelengths, 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. 5 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
- 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 disposed 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. 6 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. 7 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. 8 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.
- FIG. 9 is a view showing a cross section of the organic EL lighting device 1 having double-sided light emission.
- 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 be in contact with 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 from the organic EL element 20 is emitted from both the first substrate 17 side and the second substrate 18 side. It 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. 10A is a diagram illustrating a process of preparing the support substrate 11.
- FIG. 10B is a diagram illustrating a process of forming the first electrode 12.
- FIG. 10C is a diagram illustrating a process of forming the organic EL layer 13.
- FIG. 10D is a diagram illustrating a process of forming the second electrode 14.
- E) in FIG. 10 is a diagram showing a step of forming the protective layer 15.
- F in FIG. 10 is a diagram showing a step 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
- the 1st electrode 12, the organic EL layer 13, and the 1st on the said film tape 11' are prepared, the 1st electrode 12, the organic EL layer 13, and the 1st on the said film tape 11'.
- Two electrodes 14 and the like are sequentially formed.
- 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 a vacuum deposition method.
- 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. 11 is a schematic diagram showing a roll-to-roll vapor deposition apparatus for forming the organic EL element 20 according to the present embodiment.
- FIG. 11B is a diagram showing a state where the organic EL element 20 is arranged on the first substrate 17.
- FIG. 11 is a diagram showing a step of arranging the second substrate 18 so as to cover the first substrate 17.
- (D) in FIG. 11 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 having the holes 16 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 having the holes 16 is fixed on the first substrate 17 so as to cover the first substrate 17 on which the organic EL element 20 is arranged.
- the holes 16 of the first substrate 17 and the holes 16 of the second substrate 18 are arranged to coincide with each other.
- the lighting panel 10 is formed.
- 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 lifting / lowering cord 3 extending from the head box 2 is passed through the hole 16 of the lighting panel 10, and the branch wiring 5 connected to the lifting / lowering cord 3 and the connection defeat 8 are connected via the conductive wiring 9. . 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.
- an organic EL lighting device has been described as an example of the integrated lighting device according to the present embodiment.
- an inorganic EL lighting device plasma lighting, a field emission lamp (FEL), or the like is used.
- the lighting device may be used.
- the organic EL lighting device 1 is used as a lighting device has been described in the present embodiment, for example, it may be used as an organic thin film solar cell, an organic transistor (organic FET), or the like. Even in these cases, when the lighting device is not used, or when the lighting device is wound to reduce the illuminance, the lifting / lowering cord 3 is wound without being bent. Stress concentration can be dispersed. As a result, local concentration of stress on the lifting / lowering cord 3 occurs, and it is possible to prevent the lifting / lowering cord 3 from being broken due to deterioration.
- the appliance is moved and gathered by stacking the plurality of lighting panels by winding or unwinding the cord. It is characterized by being moved away from each other.
- a plurality of lighting panels can be stacked and collected.
- the electrodes of the organic EL element are connected to the cord and the branch wiring, respectively, and the contact between the cord and the branch wiring is fixed. It is said.
- the electrodes of the organic EL element are connected to the cord and branch wiring, respectively, and the contact point between the cord and the branch wiring is movable. Yes.
- the lighting panel can be slid when the plurality of lighting panels are stacked.
- the cord is made of a stretchable material.
- the stress concentration can be reduced, so that the integrated lighting device can be used for a long time.
- the organic EL element includes a flexible substrate.
- an organic EL element can be manufactured using a roll-to-roll manufacturing method. As a result, it is possible to reduce initial investment for introducing the apparatus, running cost, and the like.
- the lighting panel is curved.
- the light emission surface side of the light emitted from the organic EL element is curved in a convex shape in the illumination panel.
- the light of the integrated illumination device can be easily diffused, and the room or space where the integrated illumination device is installed can be illuminated over a wide area.
- the light emitting surface side of the light emitted from the organic EL element is curved in a concave shape in the lighting panel.
- an integrated illumination device having a curved illumination panel is realized, so the range of design of the integrated illumination device according to the present invention is widened.
- the illumination panel is bendable, and further includes an adjusting means for adjusting a curvature rate of the illumination 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 organic EL element is curved in a convex shape, the emitted light can be easily diffused to illuminate the room or space where the integrated illumination device is installed over a wide area. . Further, when the light emitting surface side of the light emitted from the organic EL element is curved in a concave shape, the emitted light can be easily condensed, and the points or surfaces close to the installation position of the integrated illumination device are concentrated. Can be illuminated.
- the organic EL element is characterized in that the light emission surface side of the light emitted from the organic EL element is curved in a convex shape.
- the light of the organic EL element can be diffused, and the room or space where the integrated illumination device is installed can be illuminated over a wide area.
- the organic EL element is characterized in that the light emission surface side of the light emitted from the organic EL element is concavely curved.
- the light of the organic EL element 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 integrated illumination device.
- the organic electroluminescence element is bendable, and further includes adjusting means for adjusting the curvature of the organic electroluminescence element.
- the curvature of the organic EL element can be adjusted as appropriate, so that the curvature of the organic EL element can be set to a desired value. Therefore, when the light emission surface side of the light emitted from the organic EL element is curved in a convex shape, the emitted light can be easily diffused to illuminate the room or space where the integrated illumination device is installed over a wide area. . Further, when the light emitting surface side of the light emitted from the organic EL element is curved in a concave shape, the emitted light can be easily condensed, and the points or surfaces close to the installation position of the integrated illumination device are concentrated. Can be illuminated.
- the cord extends in the vertical direction, the plurality of lighting panels are respectively held horizontally, and are moved in the vertical direction by the fixture. It is said.
- the cord extends in the horizontal direction
- the plurality of lighting panels are each held vertically, and are moved in the horizontal direction by the fixture. It is said.
- a plurality of lighting panels can be moved together in a stacked manner by moving the cord with a tool or rolled out, and moved away from each other from the combined state. Can do.
- the organic EL element has a plurality of emission colors, and can be driven independently for each emission color.
- the integrated lighting device can be provided with toning and dimming properties.
- the electrodes are an anode and a cathode, and the electrode located on the opposite side of the light emission surface of the anode and the cathode is made of a light reflective material. It is characterized by being composed.
- the utilization efficiency of light emitted from the organic EL element can be increased.
- the electrodes are an anode and a cathode, and one of the anode and the cathode is a transparent electrode.
- the light emitted from the organic EL 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 illumination panel includes the organic electroluminescence element between a pair of opposing substrates, and the light emission surface of the pair of substrates.
- the substrate located on the opposite side is made of a light-reflective material or a material having a light-reflective surface, and the gap portion between the pair of substrates is a light-reflective material or a light-reflective material. It is characterized by being sealed with a material having a sexual surface.
- the organic EL element further includes a diffusion resin layer on the light exit surface side.
- the organic EL element further includes a diffusion plate on the light exit surface side.
- the substrate is made of a light diffusing material.
- microcavity microresonator
- light is resonated and condensed by adjusting the optical path length.
- the light diffusing resin layer is formed on the light emitting surface side, or the diffusion plate is introduced, or 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, improving the color purity and luminous efficiency of the integrated illumination device and realizing a wide viewing angle. Can do.
- the organic EL element further includes 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 organic EL element further includes 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 organic EL element further includes a circularly polarizing plate on the light exit surface side.
- the circularly polarizing plate can circularly polarize the light emitted from the organic EL element and suppress external light reflection.
- the organic EL element further includes a color filter on the light exit surface side.
- the light emitted from the organic EL element can be emitted only with light having a desired wavelength by the color filter, and the effect of suppressing / reducing external light reflection can be obtained.
- the electrodes are an anode and a cathode, and the cathode is formed by co-evaporating magnesium and silver in a ratio of 1: 9.
- the device is further characterized by further comprising an electron injection layer made of lithium fluoride.
- the illumination panel has a hole for allowing the cord to pass therethrough.
- the hole is provided at a location other than the center of the lighting panel.
- the cord and each lighting panel can be connected through the cord through the hole formed in each lighting panel. Moreover, since the hole is formed at a place other than the center of each lighting panel, a large light-emitting portion of each lighting panel can be obtained, so that luminance and illuminance can be increased.
- the organic EL element includes an organic layer including a light emitting region, and the organic layer is composed of a dual charge transport material. .
- both charge transport materials can propagate the hole inject
- the electrodes are an anode and a cathode, and 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 light emitting region, and the both charge transporting material and the hole blocking material between the cathode and the light emitting region.
- the charge blocking material that forms the electron blocking region has a minimum empty orbit higher than the lowest empty orbit of the charge transporting material that forms the light emitting region.
- the first condition of having the hole blocking region and the charge transporting material constituting the hole blocking region have a highest occupied orbital shallower than the highest occupied orbital of the charge transporting material constituting the light emitting region. Yes Of the second condition that it is, it is characterized in that it meets at least one of the conditions.
- 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 integrated lighting device further includes a support cord that supports the plurality of lighting panels, and the instrument is capable of winding or unwinding the support cord.
- the rotation angle of the plurality of lighting panels is adjusted by moving the cord.
- the plurality of lighting panels are supported by the support cords, and the support cords can be wound or unwound by the instrument. Therefore, the rotation angle of the plurality of lighting panels can be adjusted by moving the support cord with the instrument. Since the angle of each lighting panel can be adjusted to a desired angle by tilting each lighting panel up and down or rotating left and right, the integrated lighting device can be either direct lighting or indirect lighting.
- the organic electroluminescence element is formed by a roll-to-roll method in the organic electroluminescence element forming step.
- an integrated illumination device having a large area can be realized, and the manufacturing cost can be kept low.
- the light emitting dopant is formed in both charge transporting materials to form the light emitting region, and the anode and the light emitting region are formed.
- An electron blocking region is formed by the both charge transporting material and the electron blocking material, and holes are formed by the both charge transporting material and the hole blocking material between the cathode and the light emitting region.
- a blocking region is formed, and at least one of the electron blocking region and the hole blocking region is formed by a vapor deposition polymerization method.
- a stable electron blocking region and hole blocking region can be formed by a simple method called vapor deposition polymerization.
- At least one material constituting the organic layer is vapor-deposited under vacuum conditions, or It is preferable to heat-treat after vapor deposition.
- the organic electroluminescence element forming step at least one material constituting the organic layer is vapor-deposited under vacuum conditions, or It is preferable to irradiate with ultraviolet rays after vapor deposition.
- 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 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 integrated illumination device manufacturing method according to the present invention is characterized in that, in the organic electroluminescence element forming step, when the ultraviolet ray is irradiated, a pattern is formed using a mask.
- 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. Specifically, 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 and the second substrate. Conductive wiring having a thickness of 100 nm was formed on the surface of the first substrate under a water pressure of 6 ⁇ 10 ⁇ 4 Pa. Two organic EL elements were arranged on the first substrate, and the conductive wiring of the first substrate and the organic EL element were connected. Then, the 1st board
- the 25 manufactured lighting panels were placed on a ladder cord connecting the head box and the bottom rail, and each lighting panel was connected to a lifting cord extending from the head box. Specifically, the conductive wiring of the lighting panel and the branch wiring connected to the lifting / lowering 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 two lighting panels arranged vertically overlap each other by 10 mm. Therefore, the height of the obtained organic EL lighting device is 1510 mm (width 60 mm ⁇ 25 sheets + endless portion 10 mm).
- 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.
- Example 2 An organic EL lighting device in which the contact between the lifting / lowering cord and the branch wiring is movable was produced. 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 same results as in Example 1 were obtained for both chromaticity and color temperature.
- Example 3 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 4 In the same manner as in Example 3, an organic EL lighting device using 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 5 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 6 In the same manner as in Example 3, an organic EL lighting device using 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 7 In the same manner as in Example 3, an organic EL lighting device using 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 lifting cord is wound without being bent by winding the lifting cord, so that local stress concentration on the lifting cord is concentrated. Can be dispersed. As a result, it is possible to prevent local stress concentration on the lifting / lowering cord 3 from being deteriorated and breaking the lifting / lowering cord due to deterioration. Therefore, even if the organic EL lighting device according to the present embodiment is wound up or down, deterioration of the lifting / lowering cord can be suppressed, so that the performance of the organic EL lighting device can be maintained high.
- the organic EL lighting device can be driven without any problem even when the contact between the lifting / lowering cord and the branch wiring connected to the lifting / lowering cord is movable.
- the organic EL lighting device may be one in which one organic EL element is separately applied to RGB, or three kinds of RGB organic EL elements may be used. In particular, by setting the lighting rate of each emission color to an arbitrary value, a desired emission intensity and emission color can be realized.
- Example 6 various emission intensities and emission colors can be obtained by changing the lighting rate of each emission color of the organic EL lighting device to an arbitrary value over time. Furthermore, if the lighting rate of each luminescent color can be controlled like Example 7, it can be set as the structure which can select the lighting rate of each luminescent color of an organic electroluminescent illuminating device to arbitrary values at any time. That is, the organic EL lighting device can have a dimming function and a toning function.
- the integrated lighting device according to the present invention can be preferably used as various types of lighting such as office lighting, store lighting, or facility lighting.
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Abstract
Description
本実施形態に係る有機エレクトロルミネッセンス(有機EL)照明装置の概要について、図1を参照して説明する。図1は、有機EL照明装置1を示す概略図である。
以下では、照明パネル10の詳しい構成について、図3を参照して説明する。図3は、照明パネル10の断面を示す図である。
以上で述べたように、複数の照明パネル10がヘッドボックス2とボトムレール4との間のラダーコード6上に配置されている。複数の照明パネル10は、ヘッドボックス2から伸びる昇降コード3によって互いに接続されている。当該昇降コード3は、各照明パネル10を吊り下げているのと共に、各照明パネル10に電力を供給する配線としての機能も有している。そして、ヘッドボックス2内の昇降コード3の先にはロッド7が接続されており、当該ロッド7先のグリップ21を引くことによって、ボトムレール4および照明パネル10が巻き上げられる。この際、ボトムレール4および照明パネル100を巻き上げると同時に、昇降コード3はヘッドボックス2内に巻き取られる。
以下では、照明パネル10を構成する各部材について、詳しく説明する。
第一基板17の有機EL素子20が配設されている側の表面には、導電配線9が形成されている。導電配線9は、有機EL素子20の幅方向に伸びるように配置されている。当該導電配線9としては、例えば、ITO、IZO、アルカリ金属またはアルカリ土類金属等が適用可能である。導電配線9は、例えば、幅2mm、長さ20mm、および厚さ150mm程度にすることができるが、必ずしもこれに限定されるわけではない。
以下では、有機EL素子20を構成する各部材について、詳しく説明する。
次に、第一電極12および第二電極14について説明する。当該第一電極12および第二電極14のうち、一方の電極が陰極であり、他方の電極が陽極である。陽極の材料としては、例えば、酸化インジウム錫(ITO)、または酸化インジウム亜鉛(IZO)等が挙げられる。
続いて、有機EL層13について説明する。上述したように、有機EL層13は、少なくとも発光層を有していれば良い。当該発光層は、正孔輸送性材料または電子輸送性材料等のホスト材料に発光ドーパントをドープした両電荷輸送性材料で形成されている。当該ホスト材料としては、例えば、4,4’-N,N’-ジカルバゾリルビフェニル(CBP)等が挙げられる。
照明パネル10は、白色発光する有機EL素子20からなることを基本とする。ただし、有機EL照明装置1に調光性および調色性を持たせるために、互いに異なる波長の光を発する複数種類の有機EL素子20を用いても良い。ここで、それぞれの有機EL素子20は、互いに同一の形状であっても良いし、互いに異なる形状であっても良い。例えば、異なる波長の光を発する有機EL素子20から構成される照明パネル10の場合、発光色ごとに有機EL素子20の長さまたは幅を異ならせても良い。この場合には、各発光ドーパントの発光効率等の特性を考慮して、任意の幅に設計することにより、消費電力、発光輝度および発光寿命の点で優れた有機EL照明装置1が実現できる。
以上では、第一基板17に有機EL素子20が配された構成を説明したが、特にこれに限定されず、例えば、第一基板17および第二基板18の両方に有機EL素子20が配置されていても良い。また、支持基板11と第一基板17とが接するように有機EL素子20が配されている構成を示したが、特にこれに限定されず、第二電極14側が第一基板17または第二基板18に接するような構成でも良い。これについて、図6~9を参照して説明する。図6は、第一基板17にボトムエミッション型の有機EL素子20を配し、第二基板18にトップエミッション型の有機EL素子20を配した有機EL照明装置1の断面を示す図である。図7は、第一基板17および第二基板18にボトムエミッション型の有機EL素子20を配した有機EL照明装置1の断面を示す図である。図8は、第一基板17にトップエミッション型の有機EL素子20を配した有機EL照明装置1の断面を示す図である。図9は、両面発光性の有機EL照明装置1の断面を示す図である。以上の図では、図を簡略化するために保護層15を図示していない。
以下では、本実施形態に係る有機EL照明装置1の製造方法について説明する。まず、有機EL素子20の製造方法について、図10を参照して説明する。図10中の(a)は、支持基板11を用意する工程を示す図である。図10中の(b)は、第一電極12を形成する工程を示す図である。図10中の(c)は、有機EL層13を形成する工程を示す図である。図10中の(d)は、第二電極14を形成する工程を示す図である。図10中の(e)は、保護層15を形成する工程を示す図である。図10中の(f)は、有機EL素子20を切り取る工程を示す図である。以下では、有機EL素子20の製造方法について、具体例を用いて説明するが、必ずしもこれに限定されるわけではない。
上述したように、本実施形態では、フィルムテープ11’上に複数の第一電極12を形成し、各第一電極12上に有機EL層13および第二電極14等を順に積層して形成している。有機EL層13および第二電極14等の形成は、ロールツウロール蒸着装置(リールツウリール蒸着装置)を用いている。これについて、図11を参照して説明する。図11中の(a)は、本実施形態に係る有機EL素子20を形成するロールツウロール蒸着装置を示す概略図である。図11中の(b)は、第一基板17上に有機EL素子20を配置した状態を示す図である。図11中の(c)は、第一基板17を覆うようにして第二基板18を配置する工程を示す図である。図11中の(d)は、ヘッドボックス2とボトムレール4との間に、複数の照明パネル10が配置された状態を示す図である。
以上では、本実施形態に係る集積型照明装置の例として、有機EL照明装置を用いて説明したが、例えば、無機EL照明装置、プラズマ照明、または電界放出型ランプ(FEL;Field Emission Lamp)等の照明装置であっても良い。また、本実施形態では、有機EL照明装置1を照明装置として用いる場合を示したが、例えば、有機薄膜太陽電池または有機トランジスタ(有機FET)等として用いても良い。これらの場合でも、照明装置を使用していない場合、または照度を弱めるために照明装置を巻き取った際に、昇降コード3が撓むことなく巻き取られるので、昇降コード3への局所的な応力の集中を分散することができる。その結果、昇降コード3への局所的な応力の集中が起こり、劣化して昇降コード3が断線してしまうのを防ぐことができる。
以上のように、本発明に係る集積型照明装置においては、上記器具は、上記コードを巻き取る、または繰り出すことによって、上記複数の照明パネルを重ねてまとめるようにして移動させ、かつまとめた状態から互いに離すようにして移動させることを特徴としている。
長さ450mm、および幅50mmの帯状のRGB積層型白色有機EL素子を採用した有機EL照明装置を作製した。具体的には、第一基板および第二基板としては、縦1000mm、横70mm、および厚さ0.7mmのガラス基板を用いた。第一基板の表面には、水圧6×10-4Paの下で厚さ100nmの導電配線の形成を行った。当該第一基板上に2個の有機EL素子を配置し、第一基板の導電配線と有機EL素子とを接続させた。その後、第一基板と第二基板とを樹脂を介して貼りあわせ、照明パネルを作製した。
昇降コードと分岐配線との接点が可動である有機EL照明装置を作製した。それ以外の構成は、実施例1と同様である。
1つの有機EL素子を3色(赤色,緑色,青色)に塗り分けた有機EL素子を採用した有機EL照明装置を作製した。それ以外の構成は、実施例1と同様である。作製した有機EL照明装置の赤色(R)、緑色(G)、および青色(B)のそれぞれの発光色の点灯率が30%、22%および60%となるようにそれぞれの導電配線に電圧を印加した。
実施例3と同様に、1つの有機EL素子を3色に塗り分けた有機EL素子を採用した有機EL照明装置を作製した。ただし、作製した有機EL照明装置の赤色(R)、緑色(G)、および青色(B)のそれぞれの発光色の点灯率が46%、28%および50%となるようにそれぞれの導電配線に電圧を印加した。それ以外の構成は、実施例1と同様である。
赤色発光有機EL素子、緑色発光有機EL素子、および青色発光有機EL素子の3種類の有機EL素子を採用した有機EL照明装置を作製した。作製した有機EL照明装置の赤色発光有機EL素子、緑色発光有機EL素子、および青色発光有機EL素子のそれぞれの点灯率が32%、20%および58%となるようにそれぞれの導電配線に電圧を印加した。それ以外の構成は、実施例1と同様である。
実施例3と同様に、1つの有機EL素子を3色に塗り分けた有機EL素子を採用した有機EL照明装置を作製した。ただし、作製した有機EL照明装置の赤色(R)、緑色(G)、および青色(B)のそれぞれの発光色の点灯率を0~100%の任意の値に経時的に変化させた。その結果、有機EL照明装置全体として、発光強度および発光色共にグラデーション変化する発光が得られた。
実施例3と同様に、1つの有機EL素子を3色に塗り分けた有機EL素子を採用した有機EL照明装置を作製した。ただし、遠隔操作装置(リモートコントローラ)によって、作製した有機EL照明装置の赤色(R)、緑色(G)、および青色(B)のそれぞれの発光色の点灯率を制御できるように設定した。そして、有機EL照明装置の点灯中に、各発光色の点灯率を上記遠隔操作装置で0~100%の任意の値に設定した。その結果、有機EL照明装置全体として、発光強度および発光色共に所望の値に設定することができた。
2 ヘッドボックス
3 昇降コード
4 ボトムレール
5 分岐配線
6 ラダーコード
7 ロッド
8 接続配線
9 導電配線
10 照明パネル
10’ 有機ELパネル
11 支持基板
11’ フィルムテープ
12 第一電極
13 有機EL層
14 第二電極
15 保護層
16 空孔
17 第一基板
18 第二基板
19 樹脂
20 有機EL素子
21 グリップ
22 ロール
23 形成部
Claims (39)
- 有機エレクトロルミネッセンス素子を有する複数の照明パネルと、
上記複数の照明パネルを保持するコードと、
上記コードを巻き取る、または繰り出すことが可能であり、当該コードを移動させることによって、上記複数の照明パネルの配置位置を調整する器具とを備えた集積型照明装置であって、
上記コードは導電性を有し、当該コードの導電部分と上記有機エレクトロルミネッセンス素子の電極とが電気的に接続していることを特徴とする集積型照明装置。 - 上記器具は、上記コードを巻き取る、または繰り出すことによって、上記複数の照明パネルを重ねてまとめるようにして移動させ、かつまとめた状態から互いに離すようにして移動させることを特徴とする請求項1に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子の電極は、それぞれ上記コードと分岐配線によって接続されており、
上記コードと上記分岐配線との接点は固定されていることを特徴とする請求項1または2に記載の集積型照明装置。 - 上記有機エレクトロルミネッセンス素子の電極は、それぞれ上記コードと分岐配線によって接続されており、
上記コードと上記分岐配線との接点は可動であることを特徴とする請求項1または2に記載の集積型照明装置。 - 上記コードは、伸縮性の材料で構成されていることを特徴とする請求項1~4のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、可撓性の基板を備えていることを特徴とする請求項1~5のいずれか1項に記載の集積型照明装置。
- 上記照明パネルは、湾曲していることを特徴とする請求項1~6のいずれか1項に記載の集積型照明装置。
- 上記照明パネルにおいて、上記有機エレクトロルミネッセンス素子が発した光の出射面側が凸状に湾曲していることを特徴とする請求項7に記載の集積型照明装置。
- 上記照明パネルにおいて、上記有機エレクトロルミネッセンス素子が発した光の出射面側が凹状に湾曲していることを特徴とする請求項7に記載の集積型照明装置。
- 上記照明パネルは湾曲可能であり、当該照明パネルの湾曲率を調整する調整手段をさらに備えていることを特徴とする請求項1~6のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子において、当該有機エレクトロルミネッセンス素子が発した光の出射面側が凸状に湾曲していることを特徴とする請求項1~6のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子において、当該有機エレクトロルミネッセンス素子が発した光の出射面側が凹状に湾曲していることを特徴とする請求項1~6のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は湾曲可能であり、当該有機エレクトロルミネッセンス素子の湾曲率を調整する調整手段をさらに備えていることを特徴とする請求項1~6のいずれか1項に記載の集積型照明装置。
- 上記コードは鉛直方向に伸びており、
上記複数の照明パネルは、それぞれ水平に保持されており、上記器具によってそれぞれ鉛直方向に移動することを特徴とする請求項1~13のいずれか1項に記載の集積型照明装置。 - 上記コードは水平方向に伸びており、
上記複数の照明パネルは、それぞれ鉛直に保持されており、上記器具によってそれぞれ水平方向に移動することを特徴とする請求項1~13のいずれか1項に記載の集積型照明装置。 - 上記有機エレクトロルミネッセンス素子は、複数の発光色を有しており、当該発光色ごとに、独立して駆動することができることを特徴とする請求項1~15のいずれか1項に記載の集積型照明装置。
- 上記電極は、陽極および陰極であり、当該陽極および陰極のうち、光の出射面とは反対側に位置する電極は、光反射性の材料で構成されていることを特徴とする請求項1~16のいずれか1項に記載の集積型照明装置。
- 上記電極は、陽極および陰極であり、当該陽極および陰極のうち、いずれか一方は透明電極であることを特徴とする請求項1~16のいずれか1項に記載の集積型照明装置。
- 上記照明パネルは、対向する1対の基板の間に上記有機エレクトロルミネッセンス素子を有しており、
上記1対の基板のうち、光の出射面とは反対側に位置する基板は、光反射性の材料、または光反射性の表面を有する材料で構成されており、
上記1対の基板の間隙部分は、光反射性の材料、または光反射性の表面を有する材料で封じられていることを特徴とする請求項1~18のいずれか1項に記載の集積型照明装置。 - 上記有機エレクトロルミネッセンス素子は、光の出射面側に拡散樹脂層をさらに備えていることを特徴とする請求項1~19のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、光の出射面側に拡散板をさらに備えていることを特徴とする請求項1~19のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、光拡散性の材料で構成された基板を備えていることを特徴とする請求項1~5のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、電荷発生層をさらに備えていることを特徴とする請求項1~22のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、光の出射面側に波長変換層をさらに備えていることを特徴とする請求項1~23のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、光の出射面側に円偏光板をさらに備えていることを特徴とする請求項1~23のいずれか1項に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、光の出射面側にカラーフィルタをさらに備えていることを特徴とする請求項1~23のいずれか1項に記載の集積型照明装置。
- 上記電極は、陽極および陰極であり、当該陰極は、マグネシウムと銀とを1対9の割合で共蒸着して形成されており、
上記有機エレクトロルミネッセンス素子は、フッ化リチウムからなる電子注入層をさらに備えていることを特徴とする請求項1~16のいずれか1項に記載の集積型照明装置。 - 上記照明パネルは、上記コードを通すための空孔を有していることを特徴とする請求項1~27のいずれか1項に記載の集積型照明装置。
- 上記空孔は、上記照明パネルの中心以外の箇所に設けられていることを特徴とする請求項28に記載の集積型照明装置。
- 上記有機エレクトロルミネッセンス素子は、発光領域を含む有機層を備えており、当該有機層は、両電荷輸送性材料で構成されていることを特徴とする請求項1~29のいずれか1項に記載の集積型照明装置。
- 上記電極は、陽極および陰極であり、
上記発光領域は、上記両電荷輸送性材料に発光ドーパントをドープして形成されており、
上記陽極および上記発光領域の間に、上記両電荷輸送性材料と電子阻止性材料とによって形成された電子阻止領域と、
上記陰極および上記発光領域の間に、上記両電荷輸送性材料と正孔阻止性材料とによって形成された正孔阻止領域とをさらに備え、
上記電子阻止領域を構成する上記両電荷輸送性材料は、上記発光領域を構成する両電荷輸送性材料の最低空軌道よりも高い最低空軌道を有しているという第一条件、および上記正孔阻止領域を構成する上記両電荷輸送性材料は、上記発光領域を構成する両電荷輸送性材料の最高被占軌道よりも浅い最高被占軌道を有しているという第二条件のうち、少なくともいずれかの条件を満たしていることを特徴とする請求項30に記載の集積型照明装置。 - 上記複数の照明パネルを支持する支持コードをさらに備えており、
上記器具は、上記支持コードを巻き取る、または繰り出すことが可能であり、当該支持コードを移動させることによって、上記複数の照明パネルの回転角度を調整することを特徴とする請求項1~31に記載の集積型照明装置。 - 有機エレクトロルミネッセンス素子を有する複数の照明パネルと、
上記複数の照明パネルを保持するコードと、
上記コードを巻き取る、または繰り出すことが可能であり、当該コードを移動させることによって、上記複数の照明パネルの配置位置を調整する器具とを備えた集積型照明装置の製造方法であって、
基板上に少なくとも陽極、発光領域を含む有機層、および陰極を順に形成して上記有機エレクトロルミネッセンス素子を形成する有機エレクトロルミネッセンス素子形成工程と、
第一基板と第二基板との間に、上記有機エレクトロルミネッセンス素子を封止して上記照明パネルを形成する照明パネル形成工程と、
導電性を有する上記コードに、上記有機エレクトロルミネッセンス素子の陽極および陰極をそれぞれ接続する接続工程と、
上記器具を形成する器具形成工程とを備えていることを特徴とする集積型照明装置の製造方法。 - 上記有機エレクトロルミネッセンス素子形成工程において、上記有機エレクトロルミネッセンス素子をロールツウロール法によって形成していることを特徴とする請求項33に記載の集積型照明装置の製造方法。
- 上記有機エレクトロルミネッセンス素子形成工程において、
両電荷輸送性材料に発光ドーパントをドープして上記発光領域を形成し、
上記陽極および上記発光領域の間に、上記両電荷輸送性材料と電子阻止性材料とによって電子阻止領域を形成し、上記陰極および上記発光領域の間に、上記両電荷輸送性材料と正孔阻止性材料とによって正孔阻止領域を形成し、当該電子阻止領域および当該正孔阻止領域のうち、少なくともいずれか一方を蒸着重合法によって形成することを特徴とする請求項33に記載の集積型照明装置の製造方法。 - 上記有機エレクトロルミネッセンス素子形成工程において、上記有機層を構成する材料の少なくとも1種類の材料を真空条件下で蒸着するのと同時に、あるいは蒸着した後に、熱処理することを特徴とする請求項33に記載の集積型照明装置の製造方法。
- 上記有機エレクトロルミネッセンス素子形成工程において、上記有機層を構成する材料の少なくとも1種類の材料を真空条件下で蒸着するのと同時に、あるいは蒸着した後に、紫外線照射することを特徴とする請求項33に記載の集積型照明装置の製造方法。
- 上記有機エレクトロルミネッセンス素子形成工程において、上記紫外線照射をした後に、熱処理を行うことを特徴とする請求項37に記載の集積型照明装置の製造方法。
- 上記有機エレクトロルミネッセンス素子形成工程において、上記紫外線照射をした時に、マスクを用いてパターン形成することを特徴とする請求項37または38に記載の集積型照明装置の製造方法。
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US9297504B2 (en) * | 2012-01-11 | 2016-03-29 | Osram Oled Gmbh | Luminaire for general lighting |
WO2013168228A1 (ja) * | 2012-05-08 | 2013-11-14 | パイオニア株式会社 | 有機エレクトロルミネッセンスデバイス |
JP2014103023A (ja) * | 2012-11-21 | 2014-06-05 | Kaneka Corp | 有機elパネル及び有機elパネルの接続構造 |
JP2014136928A (ja) * | 2013-01-17 | 2014-07-28 | Sekisui Chem Co Ltd | 太陽電池モジュールを備えたブラインドカーテン |
CN104284107A (zh) * | 2013-07-01 | 2015-01-14 | 索尼公司 | 摄像装置和电子设备 |
CN103742063A (zh) * | 2014-01-10 | 2014-04-23 | 山西大同大学 | 一种光强度可控的隐形窗帘 |
Also Published As
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JPWO2011102389A1 (ja) | 2013-06-17 |
CN102762919A (zh) | 2012-10-31 |
US8471464B2 (en) | 2013-06-25 |
US20120313512A1 (en) | 2012-12-13 |
CN102762919B (zh) | 2015-07-01 |
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