JP2014003026A - Organic light-emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an organic light-emitting device which has a simple structure and is capable of lowering a cost.SOLUTION: An organic light-emitting device 30C includes: organic light-emitting elements; electrode substrates 11 and 12 each including a pin connection hole for fixing and electrically connecting the organic light-emitting element; a holding part for holding a peripheral part of the organic light-emitting element; lead pins 9 and 10 each having an insertion part to be fitted into the pin connection hole to connect the organic light-emitting element to the electrode substrates 11 and 12; light guide members 18 and 19 disposed above a boundary region between the organic light-emitting elements; and a light diffusion sheet 17 disposed so as to cover the organic light-emitting elements through the light guide members 18 and 19.

Description

  The present invention relates to an organic light-emitting device, and more particularly to an organic light-emitting device that has a simple structure and can be reduced in cost.

  In recent years, lighting devices using organic EL (EL) elements as organic light-emitting elements have been developed for practical use. Conventionally, an organic EL lighting panel in which a power source is connected to an organic EL element using a flexible film or a wire as a lead wire is known.

  FIG. 9 shows an example of a conventional organic EL lighting panel. In a conventional organic EL lighting panel 100, an organic EL layer sandwiched between an anode and a cathode is disposed on a substrate, and the anode is connected to the anode extraction electrode 101 and the cathode is connected to the cathode extraction electrode 102, respectively. A flexible cable is provided on the anode extraction electrode 101 and the cathode extraction electrode 102 and is electrically connected to a terminal of the flexible cable (see, for example, Patent Document 1).

  As described above, in the conventional organic EL lighting panel, similarly to the display panel, power input terminals are provided on any or all of the four sides of the square panel, and the lead wires are taken out from the power input terminals using flexible cables.

JP 2007-066709 A

  However, the above-described conventional technique has a problem that a connector and a terminal block for connecting lead wires and parts for fixing the panel are separately required, and the structure is complicated and the cost is increased. Furthermore, since the structure is complicated, it is difficult to remove the panel, and there is a problem that the panel replacement operation is not easy.

  An object of the present invention is to provide an organic light emitting device having a simple structure and capable of reducing the cost.

  According to one aspect of the present invention for achieving the above object, an organic light emitting device, an electrode substrate including a pin connection hole for fixing and electrically connecting the organic light emitting device, and a peripheral portion of the organic light emitting device are provided. A light guide property disposed above a boundary region between the organic light emitting element and a lead pin having an inserting part for inserting the organic light emitting element into the electrode substrate by being inserted into the pin connection hole, There is provided an organic light-emitting device comprising: a member; and a light diffusion sheet disposed so as to cover the organic light-emitting element via the light-guiding member.

  According to the organic light emitting device of the present invention, it is possible to provide an organic light emitting device having a simple structure and capable of reducing the cost.

1 is a schematic perspective view of an organic light-emitting device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional structure view taken along the line II of FIG. 1. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the manufacturing method of the organic light-emitting device concerning the 1st Embodiment of this invention, Comprising: (a) The process of forming the anode layer 2 and the cathode terminal 6 on the board | substrate 1, and also forming the insulating layer 7 (B) Process diagram for forming the organic light emitting layer 3, (c) Process diagram for forming the cathode layer 4, (d) Process diagram for forming the sealing plate 8, (e) Lead pins (9, 10) The process drawing which attaches. It is explanatory drawing of the manufacturing method of the organic light-emitting device which concerns on the 1st Embodiment of this invention, Comprising: (f) The anode electrode substrate 11 and the cathode electrode substrate 12 are joined via the insulating layer 13, and a pin connection hole ( 14, 15), (g) Process diagram for attaching the organic light emitting device 20 to the electrode substrate (11, 12). The cross-section figure of the organic light-emitting device which concerns on the 2nd Embodiment of this invention. The typical partially broken perspective view of the organic light-emitting device concerning the 3rd Embodiment of this invention. The top view of FIG. It is explanatory drawing of the organic light-emitting device concerning the 4th Embodiment of this invention, Comprising: (a) Plan view, (b) Sectional structure figure of II-II line of (a). The typical cross-section figure of the conventional organic light emission lighting panel.

  Hereinafter, an organic light emitting device according to an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, differ from actual ones, and also include portions having different dimensional relationships and ratios between the drawings.

[First embodiment]
(Structure of organic light-emitting device)
As shown in FIGS. 1 and 2, the organic light emitting device according to the first embodiment of the present invention includes an organic light emitting element 20 and pin connection holes (14, 14) for fixing and electrically connecting the organic light emitting element 20. 15), the organic light emitting device 20 is inserted into the electrode substrate (11, 12), the pinching portions 9a, 10a that sandwich the peripheral portion of the organic light emitting device 20, and the pin connection holes (14, 15). 11 and 12) and lead pins (9, 10) having insertion portions 9b, 10b.

  The organic light emitting element 20 is formed by sequentially laminating an anode layer 2, an organic light emitting layer 3, and a cathode layer 4 on a substrate 1. The anode layer 2 and the cathode layer 4 are insulated via an insulating layer 7, the anode layer 5 is arranged with the anode layer 2 stretched, and the cathode layer 4 is stretched with the cathode layer 4. The cathode terminals 6 arranged in the above manner are formed.

  The organic light emitting element 20 is sealed on the surface on the cathode layer 4 side by the sealing plate 8 except for the anode terminal 5 and the cathode terminal 6.

  The lead pins (9, 10) include an anode side lead pin 9 and a cathode side lead pin 10.

  The anode-side lead pin 9 includes a sandwiching portion 9a that sandwiches an end portion of the organic light-emitting element 20 via the anode terminal 5, and a plug-in portion 9b that fits into an anode-side pin connection hole 14 to be described later and fixes the organic light-emitting device 20. And. Similarly, the cathode-side lead pin 10 is also inserted into a sandwiching portion 10a for sandwiching the end portion of the organic light-emitting element 20 via the cathode terminal 6 and a cathode-side pin connection hole 15 described later to fix the organic light-emitting element 20. And an insertion portion 10b.

  The lead pins (29, 40) include an anode side lead pin 29 and a cathode side lead pin 40.

  Since the anode-side lead pin 29 and the cathode-side lead pin 40 are the same as those of the anode-side lead pin 9 and the cathode-side lead pin 10 described above, a duplicate description is omitted.

  The electrode substrate (11, 12) includes an anode electrode substrate 11 and a cathode electrode substrate 12.

  The anode electrode substrate 11 and the cathode electrode substrate 12 are insulated via an insulating layer 13, and the anode side pin connection hole 14 is formed in the anode electrode substrate 11, and the cathode side pin connection hole 15 is formed in the cathode electrode substrate 12. Has been.

  The insertion portion 9b of the anode side lead pin 9 is inserted into the anode side pin connection hole 14 and the insertion portion 10b of the cathode side lead pin 10 is inserted into the cathode side pin connection hole 15, so that the organic light emitting device 20 is connected to the electrode substrate (11, 12). ) Is mounted on. The insertion part 9b and the insertion part 10b have a bent shape, and are inserted so that the inner walls of the pin connection holes (14, 15) come into contact with each other in a spring shape and are detachable.

  Since the organic light emitting device 30 is configured such that the light L is extracted from the substrate 1 side, the substrate 1 is a transparent substrate such as a glass substrate that transmits light.

  The substrate 1 preferably has a substantially rectangular shape in plan view. Lead pins (9, 10) are arranged on at least two sides or two corners of the rectangle, respectively.

  As with the substrate 1, the anode layer 2 is made of a transparent electrode made of ITO (indium-tin oxide) having a thickness of about 150 to about 160 nm that can transmit light.

  In the organic light emitting layer 3, a hole transport layer, a light emitting portion, and an electron transport layer are sequentially laminated from the substrate 1 side.

  The hole transport layer is for smoothly transporting the holes injected from the anode layer 2 to the light emitting portion. For example, NPB (N, N-di (naphthalyl) -N, N— with a thickness of about 60 nm is used. Diphenyl-benzylidene).

The electron transport layer is for smoothly transporting electrons injected from the cathode layer 4 to the light emitting portion, and is made of, for example, Alq ₃ (aluminum quinolinol complex) having a thickness of about 35 nm.

The light-emitting portion is for emitting light by recombination of injected holes and electrons. For example, Alq ₃ having a thickness of about 30 nm doped with about 1% of a coumarin compound (C ₅₄₅ T) as a light-emitting species. Consists of.

  In addition, you may comprise the organic light emitting layer 3 using layers other than the said positive hole transport layer and an electron carrying layer, for example, a positive hole injection layer, an electron injection layer, etc.

  The cathode layer 4 is made of aluminum having a thickness of about 150 nm, for example.

  The sealing plate 8 protects the anode layer 2, the cathode layer 4, and the organic light emitting layer 3 and seals them. Examples of the material of the sealing plate 8 include glass, metals such as stainless steel (SUS) and copper, and ceramics.

  The lead pins (9, 10) are for detachably attaching the substrate 1 to the electrode substrate (11, 12) and electrically connecting the organic light emitting element 20 and the electrode substrate (11, 12).

The material of the lead pins (9, 10) is preferably made of a metal having a spring property. For example, oxygen-free copper, brass, phosphor bronze, silver-plated copper and the like can be mentioned, among which phosphor bronze is preferable.

  The electrode substrates (11, 12) are for supplying power to the organic light emitting device 20, and are for fixing the substrate 1 via lead pins (9, 10). Furthermore, it has a function of a heat sink for radiating heat generated in the organic light emitting element 20.

  The electrode substrate (11, 12) is preferably made of a metal having, for example, good thermal conductivity and low electrical resistance. Preferably, copper or aluminum is used. Moreover, thickness consists of a metal of 1-10 mm, for example.

(Operating principle)
The operation principle of the organic light emitting device according to the first embodiment of the present invention is as follows.

  First, a constant voltage is applied between the anode layer 2 and the cathode layer 4 from the anode electrode substrate 11 and the cathode electrode substrate 12 via the anode terminal 5 and the cathode terminal 6 of the organic light emitting element 20. Thereby, holes are injected from the anode layer 2 into the light emitting part through the hole transport layer, and electrons are injected from the cathode layer 4 into the light emitting part through the electron transport layer. And the light L is light-emitted when the hole and the electron which were inject | poured into the light emission part recombine. The emitted light L is emitted to the outside through the substrate 1.

(Production method)
3 and 4 are diagrams illustrating a method for manufacturing the organic light emitting device according to the first embodiment of the present invention.

  The manufacturing method of the organic light emitting device according to the first embodiment of the present invention includes a step of forming the organic light emitting element 20 by forming the organic light emitting layer 3 on the substrate 1, and an end portion of the organic light emitting element 20 as a lead pin. (9, 10), the step of forming pin connection holes (14, 15) in the electrode substrate (11, 12), the organic light emitting element 20 and the electrode substrate (11, 12) are connected to the lead pins (9, 10). 10) and a step of connecting via pin connection holes (14, 15).

  Below, a manufacturing process is explained in full detail.

(A) First, as shown in FIG. 3A, after the anode layer 2 and the cathode terminal 6 on the substrate 1 are patterned and etched, an insulating layer 7 is formed between the anode layer 2 and the cathode terminal 6.

(B) Next, as shown in FIG. 3B, the organic light-emitting layer 3 is formed by sequentially forming a hole transport layer, a light-emitting portion, and an electron transport layer using a vacuum deposition apparatus.

(C) Next, as shown in FIG. 3C, the cathode layer 4 is formed by sputtering or the like to form the organic light emitting element 20 including the anode layer 2, the organic light emitting layer 3, and the cathode layer 4.

(D) Next, as shown in FIG. 3D, the sealing plate 8 is formed on the surface of the organic light-emitting element 20 except the anode terminal 5 and the cathode terminal 6 by sputtering or the like.

(E) Next, as shown in FIG. 3 (e), the lead pins (9, 10) are sandwiched between the end portions of the organic light emitting element 20 by the sandwiching portions 9 a, 10 a via the anode terminal 5 and the cathode terminal 6. Fix it.

(F) Next, as shown in FIG. 4 (f), pin connection holes (14, 15) are formed in the electrode substrate (11, 12) bonded via the insulating layer 13 by etching or the like.

(G) Finally, as shown in FIG. 4 (g), the insertion portions 9b and 10b are fitted into the pin connection holes (14, 15) to fix the organic light emitting device 20 to the electrode substrate (11, 12). The organic light emitting device 30 shown in FIG. 2 is completed.

  Such an organic light emitting device 30 can be connected to a power source simply by inserting the organic light emitting element 20 into the electrode substrate (11, 12) with the lead pins (9, 10) into the pin connection holes (14, 15). It has a structure that can be fixed to the electrode substrate (11, 12) that also serves as the substrate.

  Thereby, the organic light emitting device 30 can be reduced in size, the production efficiency and the yield can be improved, and the cost can be reduced.

  Further, by using pin connection, the structure is simple and inexpensive, and the replacement work of the organic light emitting element 20 is facilitated.

  Further, since the heat radiating plate and the electrode plate are integrated, the structure is simplified.

  According to the organic light emitting device according to the first embodiment of the present invention, it is possible to provide the organic light emitting device 30 that has a simple structure and can be reduced in cost.

[Second Embodiment]
As shown in FIG. 5, the organic light emitting device according to the second embodiment of the present invention includes an organic light emitting element 20 and pin connection holes (14, 15) for fixing and electrically connecting the organic light emitting element 20. The organic light emitting device 20 is inserted into the electrode substrate (11, 12) by being fitted into the electrode substrate (11, 12) including the holding portions 9a, 10a that sandwich the peripheral portion of the organic light emitting device 20 and the pin connection holes (14, 15). ) And lead pins (9, 10) having insertion portions 9b, 10b, and further includes a heat conductive member 16 disposed between the organic light emitting element 20 and the electrode substrate (11, 12). Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  The heat transfer member 16 is preferably formed by forming a recess 26 on the surface of the electrode substrate (11, 12) and placing the recess 26 in the entire recess 26 so as to be in close contact with the sealing plate 8.

  The material of the heat transfer member 16 is not particularly limited as long as it has heat transfer properties, and examples thereof include epoxy resins and silicone resins. A silicone resin is preferred, and silicone grease is more preferred.

  The manufacturing method of the organic light emitting device according to the second embodiment is different from the manufacturing method according to the first embodiment in the method of forming the heat conductive member 16, and the other is the same as the first embodiment. Therefore, redundant description is omitted.

  In the manufacturing method of the organic light emitting device according to the second embodiment, the organic light emitting device 30A forms a recess 26 by etching or the like on the surfaces of the electrode substrate (11, 12) and the insulating layer 13, and the entire recess 26 is formed. The heat conductive member 16 can be formed by coating or the like.

  Since the heat conductive member 16 is disposed between the organic light emitting element 20 and the electrode substrate (11, 12), the heat generated in the organic light emitting element 20 is efficiently transferred from the heat conductive member 16 to the electrode substrate (11, 12). And can dissipate heat well.

  According to the organic light emitting device according to the second embodiment of the present invention, it is possible to provide an organic light emitting device 30A having a simple structure and capable of reducing the cost.

[Third embodiment]
As shown in FIGS. 6 and 7, the organic light emitting device according to the third embodiment of the present invention has an organic light emitting element 20 and pin connection holes (14, 14) for fixing and electrically connecting the organic light emitting element 20. 15), the organic light emitting device 20 is inserted into the electrode substrate (11, 12), the pinching portions 9a, 10a that sandwich the peripheral portion of the organic light emitting device 20, and the pin connection holes (14, 15). 11, 12) and lead pins (9, 10) having insertion portions 9 b, 10 b connected to each other, and a plurality of electrode substrates (11, 12) are juxtaposed and connected via an insulating layer 13. A plurality of organic light emitting elements 20 are arranged adjacent to the main surface of the electrode substrate (11, 12). Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  According to the third embodiment, the electrode substrate (11, 12) is expanded in the plane direction, and a plurality of organic light emitting elements 20 are arranged adjacent to the electrode substrate (11, 12). The structure of the collective unit of the organic light emitting surface light source is configured as an optically continuous surface light emitter.

  That is, as shown in FIGS. 6 and 7, the anode electrode substrate 11 and the cathode electrode substrate 12 are alternately arranged via the insulating layer 13, and a plurality of organic light emitting elements 20 are provided on the electrode substrate (11, 12). Are arranged adjacent to each other.

  For example, as shown in FIG. 6, the cathode lead pins 10 and 40 are disposed on one corner of one organic light emitting element 20 on the cathode electrode substrate 12, and the anode lead pins 9 and 29 are disposed on the other corner on the anode electrode substrate 11. The anode-side lead pins 59 and 69 are attached to the anode electrode substrate 11 at one corner of the other adjacent organic light emitting element 20, and the cathode-side lead pins 50 and 60 are attached to the cathode electrode substrate 22 at the other corner. It is fixed. The collective unit is configured by repeatedly arranging these in the direction adjacent to each other and the longitudinal direction of the electrode substrates (11, 12).

  The manufacturing method of the organic light emitting device according to the third embodiment is the same as the manufacturing method according to the first embodiment, except that the plurality of organic light emitting elements 20 are arranged on the electrode substrate (11, 12). Therefore, redundant description is omitted.

  In the manufacturing method of the organic light emitting device according to the third embodiment, the anode electrode substrate 11 and the cathode electrode substrate 12 are alternately bonded via the insulating layer 13. Next, a plurality of pin connection holes (14, 15) are formed at predetermined positions in the longitudinal direction of the electrode substrate (11, 12) by etching or the like. Next, the organic light emitting device 30B can be manufactured by arranging a plurality of organic light emitting elements 20 by pin connection.

  According to the third embodiment, a plurality of organic light emitting elements 20 constitute one illumination or light emitting device, so that the layout and ratio of the emission colors of the organic light emitting elements 20 can be freely selected. That is, the color of illumination can be changed freely. For example, it is possible to arrange red, blue and green alternately for white illumination, color and design such as a neon sign, and character expression.

  Further, the shape and size of the collective unit can be freely selected. Therefore, for example, a lighting device having a curved surface can be obtained.

  In addition, when the organic light emitting element 20 is electrically connected to the electrode substrate (11, 12), the layout of the electrical connection can be freely selected such as series, parallel, facing, etc., and the drive voltage can be easily changed. .

  According to the organic light-emitting device according to the third embodiment of the present invention, it is possible to provide an organic light-emitting device 30 that has a simple structure and can be reduced in cost.

[Fourth embodiment]
As shown in FIG. 8, the organic light emitting device according to the fourth embodiment of the present invention includes an organic light emitting element 20 and pin connection holes (14, 15) for fixing and electrically connecting the organic light emitting element 20. The organic light emitting device 20 is inserted into the electrode substrate (11, 12) by being fitted into the electrode substrate (11, 12) including the holding portions 9a, 10a that sandwich the peripheral portion of the organic light emitting device 20 and the pin connection holes (14, 15). ) And lead pins (9, 10) having insertion portions 9b, 10b connected to each other, and a plurality of electrode substrates (11, 12) are connected in parallel via an insulating layer 13, and the connected electrodes A plurality of organic light emitting elements 20 are disposed adjacent to the main surface of the substrate (11, 12), and the light guiding members (18, 19) are disposed above the boundary region between the organic light emitting elements 20; Covering the organic light emitting device 20 via the members (18, 19) Further comprising a light diffusion sheet 17, which is location. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  According to 4th Embodiment, as shown to Fig.8 (a), (b), the organic light emitting element by which the light guide members (18, 19) are arranged in multiple numbers by the electrode substrate (11, 12) It arrange | positions on the surface of each corner vicinity of the four adjacent organic light emitting elements 20 so that the upper part of the boundary area | region (non-light-emitting area | region) between 20 may be covered.

  The light guide member (18, 19) includes a prism part 19 on the side in contact with the substrate 1 and a diffusion part 18 disposed on the surface of the prism part 19 facing the substrate 1, and the light emitting part of the organic light emitting element 20. Light emitted from the vicinity of the corner is condensed by the prism unit 19 and emitted to the outside of the substrate 1 through the diffusion unit 18.

  The shape of the light guide member (18, 19) may be a truncated cone or a truncated cone shape, preferably a truncated cone shape. When the bottom surface of the light guide member (18, 19) on the substrate 1 side is the lower bottom portion and the bottom surface facing the lower bottom portion is the upper bottom portion, the diameter is 5 to 10 mm for the lower bottom portion and 3 to 7 mm for the upper bottom portion. The prism portion 19 and the diffusing portion 18 are each 0.1 to 2 mm.

  In addition, a truncated cone-shaped recess is formed in the center of the lower bottom of the light guide member (18, 19) as a space for accommodating the lead pins (9, 10).

  The inclination angle of the light guide member (18, 19) with respect to the surface of the organic light emitting element 20 is 30 to 75 °, preferably 40 to 65 °. When the tilt angle is within the above range, light emitted from the vicinity of the corner of the light emitting portion of the organic light emitting element 20 can be efficiently condensed on the boundary region between the organic light emitting elements 20.

  The prism portion 19 is preferably made of a material having a refractive index larger than that of the substrate 1, and examples thereof include acrylic resins and vinyl chloride resins.

  The diffusing portion 18 is preferably made of the same material as the prism portion 19 and further has haze. The haze value is 5 to 30%, preferably 10 to 20%.

  According to the fourth embodiment, as shown in FIGS. 8A and 8B, the light diffusion sheet 17 is arranged on the surface of the diffusion portion 18 so as to cover the organic light emitting element 20.

Examples of the material of the light diffusion sheet 17 include acrylic resins and vinyl chloride resins, and those having a haze value of 5 to 30%, preferably 10 to 20% are preferable.

  The manufacturing method of the organic light emitting device according to the fourth embodiment is different except that the light guide member (18, 19) is disposed on the surface of the organic light emitting element 20, and the light diffusion sheet 17 is further disposed. Since this is the same as the manufacturing method according to the third embodiment, a duplicate description is omitted.

  In the manufacturing method of the organic light emitting device according to the fourth embodiment, the organic light emitting devices are guided to the surfaces near the respective corners of the four adjacent organic light emitting elements 20 so as to cover the upper part of the boundary region between the organic light emitting elements 20. Optical members (18, 19) are arranged. Next, the light diffusion sheet 17 is disposed on the light guide member (18, 19), and the light guide member (18, 19) is sandwiched and fixed between the organic light emitting element 20 and the light diffusion sheet 17, and the organic The light emitting device 30C can be manufactured.

  According to the fourth embodiment, the light guide member (18, 19) is disposed above the boundary region between the organic light emitting elements 20, and the light diffusion sheet is further disposed, so that it is optically seamless (seamless) Without a lighting) or a light emitting device.

  Moreover, since it has the structure which clamps and fixes the light guide member (18, 19) with the light-diffusion sheet 17 and the organic light emitting element 20, replacement | exchange and removal of the organic light emitting element 20 become easy.

  According to the organic light emitting device according to the fourth embodiment of the present invention, it is possible to provide an organic light emitting device 30C having a simple structure and capable of reducing the cost.

[Other embodiments]
The present invention has been described in detail with the first to fourth embodiments described above. However, for those skilled in the art, the present invention is limited to the first to fourth embodiments described in this specification. Obviously it is not. The present invention can be implemented as modifications and changes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention. Hereinafter, modified embodiments in which the above-described first to fourth embodiments are partially modified will be described.

  For example, it is possible to change dimensions such as the thickness of each layer and the constituent materials.

  In the organic light emitting device according to the first embodiment described above, the configuration in which the organic light emitting element 20 is sandwiched by the lead pins (9, 10) has been described. However, the sandwiching portions (9a, 10a) of the lead pins (9, 10) are described. It may be more securely fixed by covering with resin or the like.

  In the organic light emitting device according to the first embodiment described above, the organic light emitting element 20 is fixed and electrically connected to the electrode substrate (11, 12) by the lead pins (9, 10) and the lead pins (29, 40). As described above, the lead pins (29, 40) can be not electrically connected.

  In the organic light emitting device according to the above-described fourth embodiment, the configuration in which the light guide member (18, 19) is sandwiched and fixed between the light diffusion sheet 17 and the organic light emitting element 20 has been described. The diffusion sheet 17 may be bonded to the light guide member (18, 19) via an adhesive resin or the like. Further, the light guide members (18, 19) may be bonded to the organic light emitting element 20 via an adhesive resin or the like.

  In the organic light emitting device according to the fourth embodiment described above, the configuration in which the light diffusion sheet 17 is disposed on the light guide member (18, 19) has been described. A plate such as a glass plate or an acrylic resin may be disposed. In addition, the light diffusion sheet 17 can be omitted.

DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Anode layer 3 ... Organic light emitting layer 4 ... Cathode layer 5 ... Anode terminal 6 ... Cathode terminal 7 ... Insulating layer 8 ... Sealing plate 9 ... Anode-side lead pin 10 ... Cathode-side lead pin 11 ... Anode electrode substrate 12 ... Cathode electrode substrate 13 ... Insulating layer 20 ... Organic light emitting element 30 ... Organic light emitting device

Claims (8)

An organic light emitting device;
An electrode substrate including a pin connection hole for fixing and electrically connecting the organic light emitting element;
A sandwiching part that sandwiches the periphery of the organic light emitting element, and a lead pin that has an insertion part that fits into the pin connection hole and connects the organic light emitting element to the electrode substrate;
A light guide member disposed above a boundary region between the organic light emitting elements;
An organic light-emitting device comprising: a light diffusion sheet disposed so as to cover the organic light-emitting element through the light guide member.   The organic light emitting device according to claim 1, wherein an inclination angle of the light guide member with respect to a surface of the organic light emitting element is 40 to 65 °. The light guide member includes a prism portion that collects light emitted from the organic light emitting element, and a diffusion portion that emits light from the prism portion to the outside of the substrate.
The organic light emitting device according to claim 1, wherein the diffusing portion and the light diffusing sheet have a haze value of 10 to 20%.   The organic light-emitting device according to claim 1, wherein the organic light-emitting element is detachably attached to the pin connection hole via the insertion portion.   The organic light emitting device according to claim 1, wherein the lead pin is made of an elastic body having conductivity.   The organic light emitting device has a substantially rectangular shape in a plan view, and the lead pins are arranged on at least two sides or at least two corners of the rectangle. The organic light emitting device according to item.   The organic light-emitting device according to claim 1, further comprising a heat conductive member disposed between the organic light-emitting element and the electrode substrate.   A plurality of the electrode substrates are connected in parallel via an insulating layer, and a plurality of the organic light emitting elements are arranged adjacent to the main surface of the connected electrode substrates. 8. The organic light-emitting device according to any one of 7 above.

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