JP2009151945A - Organic EL light emitting device and manufacturing method thereof - Google Patents

Abstract

Light extraction efficiency is improved without degrading image display quality.
An organic EL substrate in which a reflective electrode, an organic EL layer, a transparent electrode, a color conversion layer and a barrier layer are formed on a support, and a color filter substrate in which a color filter layer is formed on a transparent support. The organic EL substrate barrier layer and the color filter substrate color filter layer are disposed inside, and the light extraction improving layer is disposed in close contact with the barrier layer. The organic EL light-emitting device, the step of forming the organic EL substrate, the step of forming the color filter substrate, A step of closely attaching the light extraction improving layer to the barrier layer of the organic EL substrate, and the organic EL substrate with the light extraction improving layer and the color filter substrate in a gas. Method for manufacturing an organic EL light-emitting device comprising a step of extraction improving layer and the color filter layer is opposed via a gap layer.
[Selection] Figure 1

Description

  The present invention relates to a top emission type organic EL light emitting device and a manufacturing method thereof. More specifically, the present invention relates to an EL light emitting device and a manufacturing method capable of efficiently emitting light emitted from an organic EL layer to the outside in a top emission type organic EL matrix display that performs full color display.

  In recent years, organic EL devices have been actively researched for practical use. Organic EL elements are expected to achieve high luminance and luminous efficiency because they can achieve high current density at low voltage, and the practical application of organic multi-color EL displays capable of high-definition multi-color or full-color display is expected. Expected. However, in addition to the non-directional light emission in the organic EL layer, all of the light emission from the organic EL layer cannot be extracted to the outside due to the refractive index structure of the element, resulting in a decrease in light emission efficiency. The current situation is inviting.

  Regarding improvement of the external extraction efficiency of light emission, a method for improving the light extraction efficiency of a device by providing a microlens or a microprism in an organic EL element or device and converting the light angle has been proposed (Patent Document 1). ~ See 5)

In Patent Document 1, (1) an organic EL element in which a plurality of microlenses and microprisms are provided for one light emitting element, and (2) a light angle that fills the gap between the microprism and the unevenness formed by the microprism. An organic EL element provided with conversion means (having a higher refractive index than the prism), or (3) a substrate that includes air bubbles and particles having different refractive indexes, and the longitudinal direction of the particles is oriented in the thickness direction of the substrate There has been proposed an organic EL element using light angle conversion means dispersed therein.
Patent Document 2 discloses a transparent substrate for an organic EL element provided with a structure composed of microlenses and microprisms and a condensing layer flattened with a transparent resin having a refractive index higher than the refractive index of the structure. Proposed.
Patent Document 3 proposes a light emitting display panel in which a microlens array is provided on the other surface of a transparent substrate provided with a light emitting element on one surface. The microlens array is equal to or higher than the refractive index of the transparent substrate. The microlens array is fixed to the transparent substrate with a transparent adhesive, and the refractive index of the adhesive is equal to or lower than the refractive index of the microlens array, and is equal to or higher than the refractive index of the transparent substrate. .

Patent Document 4 proposes an organic EL device having a substrate and an organic EL element provided on the substrate, and having a light diffusion portion made of a lens sheet on the light extraction surface side of the substrate. .
In Patent Document 5, an EL display panel substrate on which an inorganic thin film EL element is formed and a translucent seal substrate are bonded so that the EL element is on the inside, and the EL display panel substrate and the seal substrate are bonded to each other. An insulating liquid that fills the gap formed on the EL display panel substrate is provided on the EL display panel substrate side of the sealing substrate, and a microlens is configured by the light transmitting member and the insulating liquid. A thin film EL display panel has been proposed.

JP 2002-260845 A JP 2003-86353 A JP 2004-241130 A Japanese Patent No. 2931111 (Japanese Patent Laid-Open No. 8-83688) Japanese Patent Laid-Open No. 11-74072

However, there are the following problems when trying to introduce these measures for improving light extraction into a color display that displays an image.
(1) In the case of displaying an image, the efficiency cannot be sufficiently improved even by setting the extraction efficiency improving layer.
(2) When an image is displayed, the image display quality is deteriorated due to a decrease in contrast due to the installation of the extraction efficiency improving layer.

  In other words, Patent Document 1 has a problem that the light extraction efficiency is not sufficiently improved by the light angle conversion as described above, and the contrast is lowered due to the presence of light refracting in various directions. The configuration described in Patent Document 2 is the same as the second configuration described in Patent Document 1, and has the same drawbacks.

In Patent Document 3, a microlens array is provided on the display surface, but this has a problem that the contrast is lowered.
The invention of Patent Document 4 is an organic EL device having a substrate side as a light extraction surface, and has a specific light scattering portion on the light extraction surface side, and contrast is provided by installing the light scattering portion. Has the problem of lowering.
In Patent Document 5, an insulating liquid is sealed between the concavo-convex shape of the translucent member and the EL panel substrate, but the refractive index of the insulating liquid is relatively close to the refractive index of the translucent member. Yes, it cannot be said that the light collecting property is sufficient. Therefore, the extraction efficiency improvement effect is not sufficient.
In other words, the above-mentioned problems may occur simultaneously or individually by installing a microlens, a microprism, or a layer for improving the extraction efficiency, and the display quality of the image display apparatus is degraded. It is fatal.

  Accordingly, it is an object of the present invention to achieve high efficiency of an organic EL light emitting device (particularly, a top emission type organic EL matrix color display) by simultaneously solving the above-mentioned problems and improving extraction efficiency.

  The organic EL light-emitting device of the present invention has a light extraction efficiency on a barrier layer of an organic EL substrate in which a reflective electrode, an organic EL layer, a transparent electrode, a color conversion layer, and a barrier layer are formed in this order on a support. An organic EL substrate with a light extraction improving layer and a color filter substrate in which a color filter layer is formed on a transparent support, and a layer for improving the light extraction efficiency of the organic EL substrate and the color filter substrate. The color filter layer is arranged so as to be on the inner side, these two substrates are arranged so as to face each other through the gap layer, and the gap layer is filled with gas.

  Moreover, the manufacturing method of the organic EL light-emitting device of the present invention includes a step of forming an organic EL substrate on a support, a reflective electrode, an organic EL layer, a transparent electrode, a color conversion layer, and a barrier layer in this order, and a transparent support. A color filter substrate forming step for forming a color filter layer on the body, and a light extraction efficiency improving layer formation in which the light extraction efficiency improving layer is placed in close contact with the barrier layer of the organic EL substrate obtained in the organic EL substrate forming step An organic EL substrate having a light extraction efficiency improvement layer formed on the barrier layer in the light extraction efficiency improvement layer formation step and a color filter substrate formed in the color filter substrate formation step, and The method includes a step of arranging the substrates in gas so that the color filter layers are opposed to each other through a void layer.

  The problem (1) is caused by a small change in refractive index between the extraction efficiency improving layer and the outer surface side layer when the extraction efficiency is improved by refraction by the light extraction efficiency improving layer. In the present invention, the effect of improving the extraction efficiency can be maximized by providing a void layer on the outer surface of the light extraction efficiency improvement layer.

  The problem (2) is solved by reducing stray light incident from the outside by providing a light extraction efficiency improving layer between the organic EL layer and the color filter layer.

The present invention will be described below with reference to FIG.
A planarizing film 12, a first electrode (reflecting electrode) 13, an organic EL layer 14, a second electrode (transparent electrode) 15, and a barrier layer 16 are formed on a support 10 on which a TFT 11 is previously formed as a switching element. An organic EL substrate is formed. The first electrode 13 is divided into a plurality of portions, each of which is a reflective electrode connected to the TFT 11 on a one-to-one basis, and the second electrode 15 is a transparent electrode formed uniformly on the entire surface. Each layer forming the organic EL substrate can be formed using materials and methods known in the art.

  The planarizing film 12 is a layer for planarizing the unevenness formed by providing the TFT 11 and can be formed by any material and method known in the art. The planarizing film 12 is provided with a contact hole for connecting the TFT 11 and the partial electrode constituting the first electrode 13 on a one-to-one basis.

(First electrode (reflective electrode))
The first electrode 13 is made of a highly reflective metal (Al, Ag, Mo, W, Ni, Cr, etc.), an amorphous alloy (NiP, NiB, CrP, CrB, etc.), or a microcrystalline alloy (NiAl, etc.). It can be formed by a dry process such as vapor deposition or sputtering.

(Organic EL layer)
The organic EL layer 14 includes at least an organic light emitting layer, and has a structure in which a hole injection layer, a hole transport layer, an electron transport layer and / or an electron injection layer are interposed as required. Specifically, an organic EL element composed of an anode, an organic EL layer, and a cathode has a layer structure as described below (the anode and the cathode are the first electrode 13 or the second electrode 15). Either).
(1) Anode / organic light emitting layer / cathode (2) Anode / hole injection layer / organic light emitting layer / cathode (3) Anode / organic light emitting layer / electron injection layer / cathode (4) Anode / hole injection layer / organic Light emitting layer / electron injection layer / cathode (5) Anode / hole transport layer / organic light emitting layer / electron injection layer / cathode (6) Anode / hole injection layer / hole transport layer / organic light emitting layer / electron injection layer / Cathode (7) Anode / hole injection layer / hole transport layer / organic light emitting layer / electron transport layer / electron injection layer / cathode

  As the material of each layer constituting the organic EL layer 14, known materials are used. Moreover, each layer which comprises an organic EL layer can be formed using the arbitrary methods known in the said techniques, such as a vapor deposition method. For example, organic light-emitting layer materials for obtaining blue to blue-green light emission include fluorescent brighteners such as benzothiazole, benzimidazole, and benzoxazole, metal chelated oxonium compounds, and styrylbenzene. Materials such as compounds and aromatic dimethylidin compounds are preferably used.

(Second electrode (transparent electrode))
The second electrode 15 is made of ITO, tin oxide, indium oxide, IZO, zinc oxide, zinc-aluminum oxide, zinc-gallium oxide, or conductivity obtained by adding a dopant such as F or Sb to these oxides. It can be formed using a transparent metal oxide. The second electrode 15 is formed using a vapor deposition method, a sputtering method, or a chemical vapor deposition (CVD) method, and preferably formed using a sputtering method.

(Cathode buffer layer)
Note that a cathode buffer layer may be provided at the interface between the cathode (either the first electrode 13 or the second electrode 15) and the organic EL layer 14 to improve the electron injection efficiency. As a material for the cathode buffer layer, an alkali metal such as Li, Na, K, or Cs, an alkaline earth metal such as Ba or Sr, an alloy containing them, a rare earth metal, or a fluoride of these metals may be used. Yes, but not limited to them. The thickness of the cathode buffer layer can be appropriately selected in consideration of the driving voltage, transparency, and the like, but in a normal case, the thickness is preferably 10 nm or less.

The organic EL substrate of the present invention has a plurality of light emitting units controlled independently. In FIG. 1, an active matrix driving type organic EL substrate using a plurality of switching elements (TFTs 11) is shown. As another configuration, for example, both the first electrode and the second electrode are formed from a plurality of stripe-shaped partial electrodes, the direction in which the stripe-shaped partial electrodes constituting the first electrode extend and the stripe-shaped portions constituting the second electrode By crossing (preferably orthogonally) the direction in which the electrodes extend, an organic EL substrate having a plurality of independent light emitting units driven in a passive matrix can be formed. Further, in the above configuration, when forming the first electrode 13 composed of a plurality of partial electrodes, an insulating metal oxide (TiO ₂ , ZrO ₂ , AlO _x etc.) or an insulating metal nitride (AlN, SiN) Etc.) may be used to form an insulating film in the gap between the plurality of partial electrodes.

(Color conversion layer)
The color conversion layer 3 is formed on the second electrode 15. The color conversion layer 3 is installed on a part of the plurality of light emitting portions defined by the first electrode 13. Although FIG. 1 illustrates the case where one type of color conversion layer 3 is used, a plurality of types of color conversion layers 3 may be used. The color conversion layer 3 in the present invention is a layer formed from one or a plurality of color conversion dyes, and preferably has a thickness of 1 μm or less, more preferably 100 nm to 1 μm. The color conversion layer 3 is formed by a dry process, preferably a vapor deposition method (including resistance heating and electron beam heating). When the color conversion layer 3 is formed using a plurality of types of color conversion dyes, a preliminary mixture obtained by mixing a plurality of types of color conversion dyes at a predetermined ratio may be prepared in advance, and co-evaporation may be performed using the preliminary mixture. Good. Alternatively, a plurality of types of color conversion dyes may be disposed in separate heating portions, and the respective color conversion dyes may be separately heated to perform co-evaporation. In particular, the latter method is effective when there is a large difference in characteristics (evaporation rate, vapor pressure, etc.) among a plurality of types of color conversion dyes.

  Examples of the color conversion dye for forming the color conversion layer 3 include 3- (2-benzothiazolyl) -7-diethylaminocoumarin (coumarin 6), 3- (2-benzimidazolyl) -7-diethylaminocoumarin (coumarin 7), and coumarin. Coumarin dyes such as 135; naphthalimide dyes such as Solvent Yellow 43 and Solvent Yellow 44; 4-dicyanomethylene-2-methyl-6- (p-dimethylaminostyryl) -4H-pyran (DCM-1, ( I)), cyanine dyes such as DCM-2 (II) and DCJTB (III); xanthene dyes such as rhodamine B and rhodamine 6G; pyridine dyes such as pyridine 1; 4,4-difluoro-1,3, 5,7-tetraphenyl-4-bora-3a, 4a-diaza-s-indacene (IV), lumogen F Red, Nile red (V), etc. can be used.

(Barrier layer)
Subsequently, the barrier layer 16 is formed so as to cover the structure below the color conversion layer 3. The barrier layer 16 has a function of protecting the organic EL layer 14 from oxygen and moisture. At the same time, the barrier layer 16 is required to be optically transparent. The barrier layer 16 can be formed by a dry process such as a CVD method or a vapor deposition method using metal nitride, metal oxide, metal oxynitride, preferably silicon oxide, silicon nitride, silicon oxynitride, or the like. In the present invention, silicon nitride is preferably used, and silicon nitride is more preferably deposited by a CVD method. The barrier layer 16 can have a thickness of 1 to 5 μm.

(Color filter substrate)
In another step, the color filter layer 2 is formed on the separate transparent support 1. The color filter layer 2 may be one type, or a plurality of types may be aligned. FIG. 1 shows an example in which a red color filter layer 2R, a green color filter layer 2G, and a blue color filter layer 2B are provided. The color filter layer 2 can be formed using a commercially available material for a flat panel display and a known method.

  In addition, the transparent support 1 in the present embodiment is made of glass, diacetylcellulose, triacetylcellulose (TAC), propionylcellulose, butyrylcellulose, acetylpropionylcellulose, nitrocellulose or the like; polyamide; polycarbonate; polyethylene terephthalate, polyethylene Polyesters such as naphthalate, polybutylene terephthalate, poly-1,4-cyclohexanedimethylene terephthalate, polyethylene-1,2-diphenoxyethane-4,4′-dicarboxylate, polybutylene terephthalate; polystyrene; polyethylene, polypropylene, Polyolefin such as polymethylpentene; Acrylic resin such as polymethyl methacrylate; Polycarbonate; Polysulfone; Terusuruhon; polyether ketone; polyetherimides; may be a polymer material such as norbornene resins; polyoxyethylene. When a polymer material is used, the transparent support 1 may be rigid or flexible. Optically transparent means having a transmittance of 80% or more, preferably 86% or more with respect to visible light.

  A black mask layer 5 may be provided in the gap between the color filter layers 2 in order to absorb excessive light and improve display image quality. The black mask layer 5 can be formed using a known material in which a black pigment such as carbon black is dispersed in a resin ink, or an inorganic material composed of a metal such as chromium. After that, a protective layer 4 may be provided for protecting the color filter. As the material of the protective layer 4, the same material as that of the barrier layer 16 described above can be used.

(Light extraction efficiency improvement layer)
In order to obtain the effect of improving the light extraction efficiency, there are four requirements. The first requirement is that effective light emission from the light emitting portion of the device can be incident on the light extraction efficiency improving layer 23. For this purpose, the light emitting portion and the light extraction efficiency improving layer are optically coupled, That is, the low refractive index layer (for example, air layer) is in close contact without being sandwiched. The second requirement is that the next layer of the light extraction efficiency improving layer 23 should be as close as possible to the refractive index of air in order to exert an effect in order to finally emit light into the air from the light extraction improving layer. The third requirement is that the light extraction efficiency improving layer has a function of changing the angle of incident light to reduce the amount of light lost by total reflection.

  The fourth requirement is that the matrix display has a pattern in which a moire pattern does not occur when the shape of the light extraction efficiency improving layer 23 is overlapped with the pixels of the display. This is because the occurrence of moire patterns significantly reduces the display image quality of the matrix display.

  The material for the light extraction efficiency improving layer 23 is required to have at least high light transmittance. The light extraction efficiency can be improved as the refractive index of the constituent material of the light extraction efficiency improving layer 23 becomes closer to the refractive index of the material of the organic light emitting layer. The refractive index is preferably 1.4 or more. The performance can be exhibited by forming the light extraction efficiency improving layer 23 using a polymer that is usually used for optical applications. For example, acrylic, polyethylene terephthalate, polymethacrylate, polyethersulfone, polystyrene or the like may be used.

  The shape of the light extraction efficiency improving layer 23 only needs to satisfy the above-described requirements, and may be a microlens or a prism sheet that is known as the shape. That is, these materials are formed so that the first surface is a flat surface and the second surface, that is, the surface facing the color filter layer 2 has a structure. As the structure shape, for example, a part of a curved surface of a sphere, a repetition of a triangle, a quadrangular pyramid, a triangular pyramid, concentric irregularities, and the like can be provided. The structure may be arranged periodically or locally so as to be random. Moreover, what arrange | positioned an unevenness | corrugation at random may be used. These may be those already on the market such as microlens sheets and prism lens sheets.

The first surface of the light extraction efficiency improving layer 23 is filled with a gap with the barrier layer using a photo-curing adhesive, a thermosetting adhesive, a pressure-sensitive adhesive, or the like (hereinafter collectively referred to as an adhesive). . The refractive index of these materials (adhesives) is preferably 1.4 or more.
As a process, the sheet coated with the adhesive on the first surface may be brought into contact with the barrier layer 16 and a curing process may be added as necessary.

  Finally, an organic EL light-emitting device is formed by placing the organic EL substrate provided with the light extraction efficiency improving layer 23 and the color filter substrate so as to face each other and forming the gap layer 22 therebetween. Both substrates can be fixed and bonded together using the adhesive layer 21 provided on the periphery of the support 10 or the transparent support 1. The adhesive layer 21 includes a suitable adhesive (eg, UV curable adhesive) and optionally spacer particles (eg, glass beads) that define the distance between the support 10 / transparent support 1. May be included. Alternatively, both laminates may be bonded using a known method other than the adhesive layer 21 provided on the peripheral edge.

The gas filled in the gap layer 22 can be selected by selecting the atmosphere in which the installation process is performed. For example, an inert gas such as air, N ₂ , or Ar can be used.

Example 1
On a transparent support (Corning 1737 glass substrate), black mask material (color mosaic CK-7000, available from FUJIFILM Corporation), blue filter material (color mosaic CB-7001, available from FUJIFILM Corporation) A color filter layer 2 (R, G, B) and a black mask 5 were prepared by a photolithographic method using a green filter material and a red filter material (color mosaic CR-7001, available from FUJIFILM Corporation). .

  Here, the size of each sub-pixel is 300 μm × 100 μm, the gap between adjacent sub-pixels (that is, the region where the black mask 5 is formed) is 30 μm in the vertical direction and 10 μm in the horizontal direction, and the blue, green and red sub-pixels The pixel set was arranged to form one pixel. In addition, 50 pixels in the vertical direction and 50 pixels in the horizontal direction are arranged to obtain a total of 2500 pixels. The film thickness of each color filter layer 2 (R, G, B) was 1.5 μm. The film thickness of the black mask 5 was 1 μm.

  Separately, a first electrode (reflective anode) made of Al having a thickness of 500 nm and ITO having a thickness of 100 nm was formed on a glass support using a sputtering method and a photolithography method. The first electrode is composed of a plurality of stripe-shaped partial electrodes extending in the vertical direction. The partial electrodes were arranged to have a width of 105 μm and a pitch of 110 μm (interval between adjacent stripes was 5 μm).

Next, the substrate on which the first electrode is formed is placed in a resistance heating vapor deposition apparatus, and a 100 nm thick CuPc as a hole injection layer and a 20 nm thick film as a hole transport layer at a vacuum chamber internal pressure of 10 ⁻⁴ Pa. α-NPD, DPVBi with a thickness of 30 nm as a light emitting layer, and Alq ₃ with a thickness of 20 nm as an electron injection layer were stacked to form an organic EL layer.

  And the 2nd electrode which consists of Mg / Ag (mass ratio 10/1) with a film thickness of 10 nm and ITO with a film thickness of 10 nm was laminated | stacked on the organic EL layer using the mask. The second electrode is composed of a plurality of partial electrodes having a stripe pattern extending in the horizontal direction. The partial electrodes were arranged to have a width of 300 μm and a pitch of 330 μm (an interval between adjacent stripes was 30 μm).

A barrier layer made of SiN having a thickness of 500 nm was formed so as to cover the structure below the second electrode to obtain an organic EL substrate.
A microlens sheet having a diameter of 50 μm and F = 4 was formed by molding on an acrylic film having a thickness of 50 μm, and a 10 μm adhesive was applied to the back surface. The refractive index of the sheet is n = 1.50, and the refractive index of the adhesive is n = 1.52. This microlens sheet with an adhesive was pressure-bonded onto the barrier layer to form a light extraction efficiency improving layer.

Next, the organic EL substrate provided with the color filter substrate and the light extraction efficiency improving layer was carried into a nitrogen glove box controlled to have a moisture concentration of 1 ppm or less and an oxygen concentration of 1 ppm or less. Then, a UV curable adhesive (trade name 30Y-437, manufactured by ThreeBond Co., Ltd.) in which beads having a diameter of 6 μm are dispersed is applied as an adhesive layer to the outer peripheral portion of the transparent support of the color filter using a dispenser robot. did. While performing alignment, the color filter substrate with a color conversion function and the organic EL substrate provided with the light extraction efficiency improving layer were adhered to form an assembly. Subsequently, 100 mW / cm ² of ultraviolet rays was irradiated for 30 seconds to cure the adhesive layer to obtain a top emission type organic EL matrix display. The thickness of the void layer is about 5 μm, which is filled with nitrogen.

  The emission characteristics of the obtained organic EL matrix display were measured. Specifically, the brightness when all the pixels were turned on and the contrast ratio between black and white when the panel was placed at an illuminance of 700 lx were measured. The results are shown in Table 1.

(Comparative Example 1)
An organic EL matrix display was produced in the same manner as in Example 1 except that the light extraction efficiency improving layer was not provided. The emission characteristics of the obtained organic EL display were measured in the same manner as in Example 1. In addition, sensory evaluation of image quality was performed. The results are shown in Table 1.

(Comparative Example 2)
A microlens sheet similar to that used in Example 1 is attached to the display surface of the organic EL matrix display produced in Comparative Example 1 (ie, the outer surface of the transparent support) using an adhesive, and the organic EL with a microlens sheet is used. A matrix display was obtained. The emission characteristics of the obtained organic EL matrix display were measured in the same manner as in Example 1. In addition, sensory evaluation of image quality was performed. The results are shown in Table 1.

(Comparative Example 3)
In Example 1, when assembling two types of substrates, an organic EL matrix display was produced in the same manner as in Example 1 except that silicone oil was dropped and sealed instead of nitrogen. That is, a silicone oil filling layer was formed in place of the void layer. The emission characteristics of the obtained organic EL matrix display were measured in the same manner as in Example 1. In addition, sensory evaluation of image quality was performed. The results are shown in Table 1.

  In Table 1, Comparative Example 1 does not take any measures for improving the extraction efficiency. In Comparative Example 2, a decrease in contrast and image quality is recognized as compared with Comparative Example 1, and Comparative Example 3 does not exhibit the effect of improving the extraction efficiency. On the other hand, in Example 1, an improvement in light emission luminance is recognized, and it can be seen that contrast and image quality are maintained.

It is a figure explaining one Embodiment of the organic electroluminescent light emitting device of this invention.

Explanation of symbols

1 Transparent support 2 (R, G, B) Color filter layer (red, green, blue)
3 color conversion layer 4 protective layer 5 black mask 10 support 11 TFT
12 planarization film 13 first electrode 14 organic EL layer 15 transparent electrode 16 barrier layer 21 adhesive layer 22 void layer 23 light extraction efficiency improving layer

Claims (2)

  On the support, a light extraction efficiency improving layer is closely disposed on a barrier layer of an organic EL substrate in which a reflective electrode, an organic EL layer, a transparent electrode, a color conversion layer, and a barrier layer are formed in this order. The organic EL substrate with the extraction efficiency improving layer and the color filter substrate in which the color filter layer is formed on the transparent support are arranged inside the light extraction efficiency improving layer of the organic EL substrate and the color filter layer of the color filter substrate. The organic EL light emitting device is characterized in that the two substrates are arranged so as to face each other with a gap layer therebetween, and the gap layer is filled with a gas.   An organic EL substrate forming step of forming a reflective electrode, an organic EL layer, a transparent electrode, a color conversion layer and a barrier layer in this order on the support, and a color filter substrate forming step of forming a color filter layer on the transparent support And an organic EL substrate forming step with a light extraction efficiency improving layer in which the light extraction efficiency improving layer is placed in close contact with the barrier layer of the organic EL substrate obtained in the organic EL substrate forming step, and an organic with a light extraction efficiency improving layer. The EL substrate and the color filter substrate formed in the color filter substrate forming step are arranged so that the substrates are opposed to each other in the gas so that the light extraction efficiency improving layer and the color filter layer are opposed to each other through the gap layer in the gas. The manufacturing method of the organic electroluminescent light-emitting device characterized by having a process.

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