JP2016122608A - Light emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress changes in luminous colors in a light emitting device including a plurality of organic layers laminated therein, the organic layers emitting colors different from each other.SOLUTION: A first structure 182 includes a first electrode 110, a first organic layer 122, a charge generation layer 124 and a second organic layer 126. Each of the first organic layer 122 and the second organic layer 126 emits light when a current flows. The first organic layer 122 emits light in a first color, and the second organic layer 126 emits light in a second color. A second structure 184 includes an insulation layer 160, the charge generation layer 124 and the organic layer 126. The charge generation layer 124 of the first structure 182 is connected to the charge generation layer 124 of the second structure 184. A light emitting device 10 includes a second electrode 130. The second electrode 130 is formed continuously on the first structure 182 and the second structure 184.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a light emitting device.

  In recent years, development of light-emitting devices having organic EL (Organic Electroluminescence) elements as light-emitting elements has been progressing. The organic EL element has a configuration in which an organic layer is sandwiched between a first electrode and a second electrode. Examples of light emitting devices having organic EL elements include lighting devices and display devices.

  Patent Documents 1 and 2 describe a display device having an organic EL element. For example, the display devices of Patent Documents 1 and 2 repeatedly include a green light emitting element, a blue light emitting element, and a red light emitting element. And in patent document 1, each light emitting element is enclosed by the structure which consists of the same layer as a lower electrode. Organic layers are also formed on the side and top surfaces of the structure. In Patent Document 2, a light shielding portion is formed between the light emitting elements.

JP 2014-175165 A JP 2014-183025 A

  One of the light-emitting devices includes a plurality of light-emitting portions arranged and a plurality of light-emitting layers stacked in each of the plurality of light-emitting portions. On the other hand, a light emitting device having a plurality of light emitting units has an insulating layer that partitions adjacent light emitting units. A region of the light emitting device that overlaps with the insulating layer is a non-light emitting region. For this reason, the light emission amount of the light emitting device has been reduced.

  An example of a problem to be solved by the present invention is to increase the amount of light in a light emitting device in which a plurality of light emitting units are arranged and a plurality of organic layers are stacked in each of the plurality of light emitting units.

The invention according to claim 1 is a substrate;
A first structure provided on the substrate;
A second structure provided on the substrate and lined up with the first structure;
With
The first structure is:
A first electrode;
A first organic layer formed above the first electrode and emitting in a first color;
A charge generation layer formed above the first organic layer;
A second organic layer formed above the charge generation layer and emitting in a second color;
Have
The second structure is:
A translucent insulating layer;
Formed above the insulating layer, the charge generation layer;
The second organic layer formed above the charge generation layer;
Have
The charge generation layer of the second structure is connected to the charge generation layer of the first structure;
Furthermore, it is a light-emitting device provided with the 2nd electrode formed continuously on the said 1st structure and the said 2nd structure.

The invention according to claim 6 is a substrate;
A first electrode formed on the substrate;
A conductive first structure provided on the first electrode;
An insulating layer provided on the substrate and lined up with the first structure;
A charge generation layer continuously formed on the insulating layer and the first structure;
An organic layer formed on the charge generation layer located in a region overlapping with the insulating layer and including a light emitting layer;
A second electrode formed on the organic layer;
It is a light-emitting device provided with.

It is sectional drawing which shows the structure of the light-emitting device which concerns on embodiment. 1 is a plan view illustrating a configuration of a light emitting device according to Example 1. FIG. FIG. 3 is a diagram in which a second electrode is removed from FIG. 2. It is the figure which removed the organic layer from FIG. It is AA sectional drawing of FIG. 6 is a plan view of a light emitting device according to Example 2. FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a figure which shows the result of having measured the relationship between the distance from the edge of a conductive layer to the edge of an insulating layer, and the brightness | luminance of the light-emitting device in the area | region which overlaps with a 2nd structure. 6 is a plan view of a light emitting device according to Example 3. FIG. It is BB sectional drawing of FIG. It is sectional drawing which shows the structure of the light-emitting device which concerns on a reference example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

  FIG. 1 is a cross-sectional view illustrating a configuration of a light emitting device 10 according to the embodiment. The light emitting device 10 according to this embodiment includes a substrate 100, a first structure 182, and a second structure 184. The first structure 182 is provided on the substrate 100 and includes a first electrode 110, a first organic layer 122, a charge generation layer 124, and a second organic layer 126. The first organic layer 122 is located above the first electrode 110. The charge generation layer 124 is located above the first organic layer 122, and the second organic layer 126 is located above the charge generation layer 124. Both the first organic layer 122 and the second organic layer 126 emit light when a current flows. The first organic layer 122 emits light with a first color, for example, and the second organic layer 126 emits light with a second color, for example. However, the emission color of the first organic layer 122 and the emission color of the second organic layer 126 may be the same. The second structure 184 is provided on the substrate 100 and includes an insulating layer 160, a charge generation layer 124, and a second organic layer 126. In the second structure 184, the charge generation layer 124 is located above the insulating layer 160, and the second organic layer 126 is located above the charge generation layer 124. The charge generation layer 124 of the first structure 182 and the charge generation layer 124 of the second structure 184 are connected. In addition, the light emitting device 10 includes a second electrode 130. The second electrode 130 is continuously formed on the first structure 182 and the second structure 184. Specifically, the second electrode 130 is formed on the second organic layer 126.

  From another viewpoint, the second organic layer 126 of the second structure 184 is connected to the first electrode 110 through the charge generation layer 124 and the conductive first structure 182. Details will be described below.

The substrate 100 is a light-transmitting substrate such as a glass substrate or a resin substrate. The substrate 100 may have flexibility. In the case of flexibility, the thickness of the substrate 100 is, for example, not less than 10 μm and not more than 1000 μm. The substrate 100 is, for example, a polygon such as a rectangle. When the substrate 100 is a resin substrate, the substrate 100 is formed using, for example, PEN (polyethylene naphthalate), PES (polyethersulfone), PET (polyethylene terephthalate), or polyimide. When the substrate 100 is a resin substrate, an inorganic barrier film such as SiN _x or SiON is formed on at least one surface (preferably both surfaces) of the substrate 100 in order to prevent moisture from permeating the substrate 100. Yes.

  The first electrode 110 is a transparent electrode having optical transparency. The material of the transparent electrode is a material containing a metal, for example, a metal oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IWZO (Indium Tungsten Zinc Oxide), or ZnO (Zinc Oxide). The thickness of the first electrode 110 is, for example, not less than 10 nm and not more than 500 nm. The first electrode 110 is formed using, for example, a sputtering method or a vapor deposition method. The first electrode 110 may be a carbon nanotube or a conductive organic material such as PEDOT / PSS.

  The organic layer 120 includes the first organic layer 122, the charge generation layer 124, and the second organic layer 126 described above. The first organic layer 122 and the second organic layer 126 have, for example, a configuration in which a hole injection layer, a light emitting layer, and an electron injection layer are stacked in this order. A hole transport layer may be formed between the hole injection layer and the light emitting layer. In addition, an electron transport layer may be formed between the light emitting layer and the electron injection layer. Here, the material constituting the light emitting layer of the first organic layer 122 may be the same as or different from the material constituting the light emitting layer of the second organic layer.

  The charge generation layer 124 is located between the first organic layer 122 and the charge generation layer 124, and one of holes and electrons (electrons when the first electrode 110 is a positive electrode) is transferred to the first organic layer 122, The other of holes and electrons (a hole when the organic layer 120 is a cathode) is supplied to the second organic layer 126, respectively. The charge generation layer 124 is continuously formed of the first structure 182 and the second structure 184.

  Each layer constituting the organic layer 120 may be formed by a vapor deposition method. Further, at least one of the organic layers 120, for example, the first organic layer 122 may be formed by a coating method such as an inkjet method, a printing method, or a spray method. The remaining layers may be formed in the same manner or may be formed by vapor deposition. Moreover, all the layers of the organic layer 120 may be formed using the apply | coating method.

  The second electrode 130 is made of, for example, a metal selected from the first group consisting of Al, Au, Ag, Pt, Mg, Sn, Zn, and In, or an alloy of a metal selected from the first group. Contains a metal layer. In this case, the second electrode 130 has a light shielding property. The thickness of the second electrode 130 is, for example, not less than 10 nm and not more than 500 nm. However, the second electrode 130 may be formed using the material exemplified as the material of the first electrode 110. The second electrode 130 is formed using, for example, a sputtering method or a vapor deposition method.

  The light emitting device 10 includes a first structure 182 and a second structure 184. The first structure 182 is located between the first electrode 110 and the second electrode 130, and includes a first organic layer 122, a charge generation layer 124, and a second organic layer 126. The first organic layer 122 of the first structure 182 is in contact with the first electrode 110, and the second organic layer 126 of the first structure 182 is in contact with the second electrode 130. Thus, the first structure 182 has a so-called tandem structure. When a current flows between the first electrode 110 and the second electrode 130, the first organic layer 122 and the second organic layer 126 of the first structure 182 emit light. When the emission color of the first organic layer 122 and the emission color of the second organic layer 126 are different, the emission color of the first structure 182 is a mixture of the emission color of the first organic layer 122 and the emission color of the second organic layer 126. It becomes the color.

  On the other hand, the second structure 184 is aligned with the first structure 182 and includes an insulating layer 160, a charge generation layer 124, and a second organic layer 126. The insulating layer 160 is, for example, polyimide, epoxy, acrylic, or novolac resin, and has a light transmitting property. As an example of forming the insulating layer 160, there is a method in which a photosensitive polyimide is formed by coating and then formed by a photolithography method. In the example shown in this drawing, a first organic layer 122 is formed between the charge generation layer 124 and the insulating layer 160. However, the first organic layer 122 of the second structure 184 is not in contact with the first electrode 110. Instead, as described above, the charge generation layer 124 of the second structure 184 is continuous with the charge generation layer 124 of the first structure 182. Therefore, even though the first organic layer 122 of the second structure 184 is not in contact with the first electrode 110, a part of the current supplied to the first structure 182 passes through the charge generation layer 124 to the first The second structure 184 is supplied to the second organic layer 126. Accordingly, the second organic layer 126 of the second structure 184 emits light. On the other hand, the first organic layer 122 of the second structure 184 emits little light. For this reason, even if the emission color of the first organic layer 122 and the emission color of the second organic layer 126 are different, the emission color of the second structure 184 becomes the emission color of the second organic layer 126.

  The width of the second structure 184 is, for example, 200 μm or less, and the width of the first structure 182 and the width of the second structure 184 are designed so that the aperture ratio is, for example, 75% or more. The For this reason, the light emission from the second structure 184 is mixed with the light emission from the first structure 182. Then, the user of the light emitting device 10 recognizes the first structure 182 and the second structure 184 as one light emitting region.

  In the example shown in FIG. 1, the first electrode 110 is divided into a plurality of pieces, and the insulating layer 160 is located between the first electrodes 110. However, the first electrode 110 may be continuous. In this case, the insulating layer 160 is located on the first electrode 110.

  Next, a method for manufacturing the light emitting device 10 will be described. First, the first electrode 110 is formed on the substrate 100. Next, the insulating layer 160, the organic layer 120, and the second electrode 130 are formed in this order.

  Next, the operation of the light emitting device 10 shown in this embodiment will be described. When a voltage is applied between the first electrode 110 and the second electrode 130, a current flows through the first organic layer 122, the charge generation layer 124, and the second organic layer 126 of the first structure 182 as described above. Thereby, the first organic layer 122 and the second organic layer 126 of the first structure 182 emit light. On the other hand, a current flows through the second organic layer 126 of the second structure 184 via the first organic layer 122 and the charge generation layer 124 of the first structure 182. Accordingly, the second organic layer 126 of the second structure 184 emits light.

  Here, a part of the current that has flowed through the first organic layer 122 of the first structure 182 does not flow to the second organic layer 126 of the first structure 182, but the second organic layer 126 of the second structure 184. Flowing into. For this reason, the area | region which overlaps with the 2nd structure 184, ie, the insulating layer 160, can be functioned as a light emission part. For this reason, the light emission amount (or light flux) from the light emitting device 10 can be increased. Conversely, when there is no need to increase the amount of light emitted from the light emitting device 10, the current density of the light emitting device 10 can be lowered, so that the deterioration rate of the light emitting device 10 can be slowed down.

  Further, as one of the methods for changing the emission color of the organic EL element to a desired color, the material constituting the light emitting layer of the first organic layer 122 is different from the material constituting the light emitting layer of the second organic layer 126, There is a method of making the emission color of the first organic layer 122 different from the emission color of the second organic layer 126. In this case, the user of the light-emitting device 10 receives the light emitted from the first organic layer 122 of the first structure 182, the light emitted from the second organic layer 126 of the first structure 182, and the first light of the second structure 184. The color in which the light emitted from the two organic layers 126 is mixed is recognized as the emission color of the light emitting device 10.

  On the other hand, the light emission intensity (luminance) from the organic layer decreases as the accumulated light emission time becomes longer, but the rate of decrease varies depending on the material of the organic layer. For this reason, when a plurality of organic layers emitting different colors are stacked, the emission color of the light emitting device may change as the accumulated emission time becomes longer.

  For example, when the degradation rate of the second organic layer 126 (for example, the rate of decrease in emission intensity) is faster than the degradation rate of the first organic layer 122, the second organic layer 126 increases as the cumulative emission time of the light emitting device 10 increases. The reduction rate of the luminance of the first organic layer 122 tends to be larger than the reduction rate of the first organic layer 122 with respect to the initial value.

  On the other hand, according to this embodiment, the light emission area of the second organic layer 126 can be made larger than the light emission area of the first organic layer 122. For this reason, the current density of the second organic layer 126 is smaller than the current density of the first organic layer 122. Accordingly, the deterioration rate of the second organic layer 126 can be slowed down. As a result, the light emission color of the light emitting device 10 hardly changes even when the cumulative light emission time is long.

  In such a case, for example, the emission color of the second organic layer 126 may be shorter than the emission color of the first organic layer 122. For example, the emission color of the first organic layer 122 is orange (yellow and red elements are mixed in the same emission layer), and the emission color of the second organic layer 126 is blue. In this case, the color of the light emitted from the first structure 182 is white. On the other hand, the color of the light emitted from the second structure 184 is blue. And a user recognizes the luminescent color of the light-emitting device 10 as white.

Example 1
FIG. 2 is a plan view illustrating the configuration of the light emitting device 10 according to the first embodiment. 3 is a view in which the second electrode 130 is removed from FIG. 2, and FIG. 4 is a view in which the organic layer 120 is removed from FIG. FIG. 5 is a cross-sectional view taken along the line AA in FIG. To help understanding, the organic layer 120 and the second electrode 130 are also shown in FIG. In the embodiment, the cross-sectional view shown in FIG. 1 corresponds to the BB cross section of FIG. However, the first electrode 110 may be formed continuously in the light emitting unit 140. In this case, the insulating layer 160 is formed on the first electrode 110.

  The light emitting device 10 according to the present embodiment has a light emitting unit 140 on the first surface 102 of the substrate 100. The light emitting unit 140 includes a first electrode 110, an organic layer 120, a second electrode 130, and an insulating layer 160. The organic layer 120 and the insulating layer 160 constitute a first structure 182 and a second structure 184. The structure of the 1st structure 182 and the 2nd structure 184 is the same as that of embodiment. In the example shown in the figure, the first structure 182 and the second structure 184 are repeatedly arranged in the first direction (x direction in FIGS. 2 to 4). Moreover, the 1st structure 182 and the 2nd structure 184 are extended in the direction (for example, orthogonal direction: y direction in FIGS. 2-4) which cross | intersects a 1st direction.

  The edge of the first electrode 110 is covered with the insulating layer 150. The insulating layer 150 is made of, for example, a resin material such as polyimide, and surrounds a portion that becomes a light emitting region of the light emitting unit 140 in the first electrode 110. By providing the insulating layer 150, it is possible to suppress a short circuit between the first electrode 110 and the second electrode 130 at the edge of the first electrode 110. The insulating layer 150 is formed higher than the insulating layer 160. For this reason, it is possible to suppress the charge generation layer 124 and the second organic layer 126 of the organic layer 120 from getting over the insulating layer 150.

  In addition, the light emitting device 10 includes a first terminal 112 and a second terminal 132. The first terminal 112 is connected to the first electrode 110, and the second terminal 132 is connected to the second electrode 130. For example, the first terminal 112 and the second terminal 132 include a layer formed of the same material as that of the first electrode 110. A lead wiring may be provided between the first terminal 112 and the first electrode 110. In addition, a lead wiring may be provided between the second terminal 132 and the second electrode 130.

  Also in this embodiment, the light emitting device 10 includes the first structure 182 and the second structure 184. For this reason, similarly to the embodiment, the light emission amount (or light flux) from the light emitting device 10 can be increased. Conversely, when there is no need to increase the amount of light emitted from the light emitting device 10, the current density of the light emitting device 10 can be lowered, so that the deterioration rate of the light emitting device 10 can be slowed down.

  Further, the material constituting the light emitting layer of the first organic layer 122 and the material constituting the light emitting layer of the second organic layer 126 are made different so that the light emission color of the first organic layer 122 and the light emission color of the second organic layer 126 are changed. In the case of different colors, the emission color of the light-emitting device 10 is unlikely to change even if the cumulative emission time is long, as in the embodiment.

  In addition, the light emitting device 10 repeatedly includes the first structure 182 and the second structure 184. For this reason, the light emission area of the light-emitting device 10 can be expanded.

(Example 2)
FIG. 6 is a plan view of the light emitting device 10 according to the second embodiment, and corresponds to FIG. 4 in the first embodiment. 7 is a cross-sectional view taken along the line BB in FIG. 6, and FIG. 8 is a cross-sectional view taken along the line CC in FIG. 6 is the same as that shown in FIG. 5 of the first embodiment. The light emitting device 10 according to the present example has the same configuration as that of the light emitting device 10 according to Example 1 except for the following points.

  First, the first electrode 110 is continuously formed in the light emitting unit 140. The insulating layer 160 is formed on the first electrode 110.

  A conductive layer 170 is formed on the first electrode 110. The conductive layer 170 functions as an auxiliary electrode of the first electrode 110 and is formed of a material having a lower resistance than the first electrode 110, such as a metal. The conductive layer 170 has a light shielding property. The conductive layer 170 may have a multilayer structure. In this case, the conductive layer 170 includes, for example, a first conductive layer that is a metal layer such as Mo or Mo alloy, a second conductive layer that is a metal layer such as Al or Al alloy, and a metal layer such as Mo or Mo alloy. The third conductive layer is stacked in this order. The thickness of the second conductive layer is, for example, not less than 50 nm and not more than 1000 nm. Preferably it is 100 nm or less. The first conductive layer and the third conductive layer are thinner than the second conductive layer, for example, 30 nm or less, preferably 25 nm or less. The width of the conductive layer 170 is, for example, not less than 1 μm and not more than 150 μm. The conductive layer 170 is covered with an insulating layer 160. In other words, the conductive layer 170 overlaps the first structure 182.

  FIG. 9 shows the results of measuring the relationship between the distance d from the edge of the conductive layer 170 to the edge of the insulating layer 160 and the luminance of the light emitting device 10 in the region overlapping the second structure 184. In this measurement, the luminance when the distance d is 300 μm is 100%. When the distance d is 15 μm, the luminance of light is 14%. The luminance when the distance d is 30 μm is 25%, and the luminance when the distance d is 70 μm is 50%. The luminance when the distance d is 130 μm is 70%. Thus, when the distance d is 15 μm or more, the luminance of the light emitting device 10 in the region overlapping the second structure 184 can be ensured. The distance is preferably 300 μm or less. In this way, it is not necessary to make the width of the second structure 184 wider than necessary.

  As described above, according to the present embodiment, as in the first embodiment, the light emission amount (or light flux) from the light emitting device 10 can be increased. Conversely, when there is no need to increase the amount of light emitted from the light emitting device 10, the current density of the light emitting device 10 can be lowered, so that the deterioration rate of the light emitting device 10 can be slowed down. Further, the material constituting the light emitting layer of the first organic layer 122 and the material constituting the light emitting layer of the second organic layer 126 are made different so that the light emission color of the first organic layer 122 and the light emission color of the second organic layer 126 are changed. In the case of different colors, the emission color of the light-emitting device 10 is unlikely to change even if the cumulative emission time is long, as in the embodiment.

  In addition, since the first structure 182 and the second structure 184 are repeatedly provided, the light emitting area of the light emitting device 10 can be increased. Further, since the conductive layer 170 is provided in a region overlapping with the insulating layer 160, the apparent resistance of the first electrode 110 can be reduced. For this reason, it can suppress that in-plane distribution arises in the brightness | luminance of the light-emitting device 10.

Example 3
FIG. 10 is a plan view of the light emitting device 10 according to the third embodiment and corresponds to FIG. 6 in the second embodiment. 11 is a cross-sectional view taken along the line BB in FIG. The light emitting device 10 according to this example has the same configuration as that of the light emitting device 10 according to Example 2, except that the insulating layer 150 is formed in the same process as the insulating layer 160.

  Specifically, the insulating layer 150 is integrated with the insulating layer 160. The height of the insulating layer 150 is substantially the same as the height of the insulating layer 160. Therefore, at least the charge generation layer 124 and the second organic layer 126 of the organic layer 120 are also formed on the upper surface of the insulating layer 150.

  Also according to the present example, the light emission amount (or light flux) from the light emitting device 10 can be increased as in the embodiment. Conversely, when there is no need to increase the amount of light emitted from the light emitting device 10, the current density of the light emitting device 10 can be lowered, so that the deterioration rate of the light emitting device 10 can be slowed down. Further, the material constituting the light emitting layer of the first organic layer 122 and the material constituting the light emitting layer of the second organic layer 126 are made different so that the light emission color of the first organic layer 122 and the light emission color of the second organic layer 126 are changed. In the case of different colors, the emission color of the light-emitting device 10 is unlikely to change even if the cumulative emission time is long, as in the embodiment.

  Further, similarly to Example 2, the light emitting area of the light emitting device 10 can be expanded. Furthermore, it can suppress that distribution arises in the brightness | luminance of the light-emitting device 10. FIG.

(Reference example)
FIG. 12 is a cross-sectional view illustrating a configuration of a light emitting device 10 according to a reference example, and corresponds to FIG. 1 in the embodiment. The light emitting device 10 according to this reference example has the same configuration as the light emitting device 10 according to the embodiment except for the following points.

  First, the side surface 162 of the insulating layer 160 has a taper. At least the first organic layer 122 and the charge generation layer 124 are not formed on the upper surface of the insulating layer 160. In the example shown in this figure, the second organic layer 126 is not formed on the upper surface of the insulating layer 160.

  According to this reference example, since the side surface 162 of the insulating layer 160 has a taper, it can be suppressed that the charge generation layer 124 is formed on the upper surface of the insulating layer 160. For this reason, when it is not desired that the organic layer emit light on the upper surface of the insulating layer 160, this light emission can be suppressed.

  In Examples 1 to 3 described above, the light emitting device 10 may have the same configuration as that of the present reference example.

  As mentioned above, although embodiment, an Example, and the reference example were described with reference to drawings, these are illustrations of a light-emitting device, Various structures other than the above can also be employ | adopted.

DESCRIPTION OF SYMBOLS 10 Light-emitting device 100 Board | substrate 110 1st electrode 120 Organic layer 122 1st organic layer 124 Charge generation layer 126 2nd organic layer 130 2nd electrode 160 Insulating layer 170 Conductive layer 182 1st structure 184 2nd structure

Claims (6)

A substrate,
A first structure provided on the substrate;
A second structure provided on the substrate and lined up with the first structure;
With
The first structure is:
A first electrode;
A first organic layer formed above the first electrode and emitting in a first color;
A charge generation layer formed above the first organic layer;
A second organic layer formed above the charge generation layer and emitting in a second color;
Have
The second structure is:
A translucent insulating layer;
The charge generation layer formed above the insulating layer;
The second organic layer formed above the charge generation layer;
Have
The charge generation layer of the second structure is connected to the charge generation layer of the first structure;
Furthermore, a light-emitting device provided with the 2nd electrode formed continuously on the said 1st structure and the said 2nd structure. The light-emitting device according to claim 1.
A light emitting device comprising a conductive layer formed on the first electrode and covered with the insulating layer. The light-emitting device according to claim 2.
A light-emitting device in which a distance from an edge of the conductive layer to an edge of the insulating layer is 15 μm or more. In the light-emitting device as described in any one of Claims 1-3,
The light emitting device, wherein the second color is a color on a shorter wavelength side than the first color. In the light-emitting device as described in any one of Claims 1-4,
The light emitting device wherein the rate of decrease in emission intensity of the second organic layer is greater than the rate of decrease in emission intensity of the first organic layer. A substrate,
A first electrode formed on the substrate;
A conductive first structure provided on the first electrode;
An insulating layer provided on the substrate and lined up with the first structure;
A charge generation layer continuously formed on the insulating layer and the first structure;
An organic layer formed on the charge generation layer located in a region overlapping with the insulating layer and including a light emitting layer;
A second electrode formed on the organic layer;
A light emitting device comprising:

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