Organic light-emitting elements of LED with light reflection layers in each spaced on opposite sides of transparent conductive layer

1. An organic light-emitting device, comprising:

a substrate; and

a plurality of organic light-emitting elements formed on the substrate,

wherein the plurality of the organic light-emitting elements include a first organic light-emitting element which emits a light of a first emission color, and a second organic light-emitting element which emits a light of a second emission color different from the first emission color,

wherein each of the organic light-emitting elements has a first electrode, an organic compound layer containing a light-emitting layer, and a second electrode in this order on the substrate,

wherein the first electrode of both the first and second organic light-emitting elements has a light reflection layer and a first transparent conductive layer;

wherein the light reflection layer of the first organic light-emitting element is formed between the substrate and the first transparent conductive layer of the first organic light-emitting element,

wherein the light reflection layer of the second organic light-emitting element is formed between the first transparent conductive layer of the second organic light-emitting element and the organic compound layer of the second organic light-emitting element, and

wherein a thickness of the first transparent conductive layer of the first organic light-emitting element is the same as a thickness of the first transparent conductive layer of the second organic light-emitting element.

2. The organic light-emitting device according to claim 1 , wherein

the plurality of the organic light-emitting elements further include a third organic light-emitting element which emits a light of a third emission color different from the first emission color and the second emission color,

the first electrode of the third organic light-emitting element has the light reflection layer and the first transparent conductive layer,

the first electrode of the first to third organic light-emitting elements has a second transparent conductive layer on the organic compound layer side of the first transparent conductive layer, and

the reflection layer of the first organic light-emitting element is formed between the substrate and the first transparent conductive layer of the first organic light-emitting element,

the reflection layer of the second organic light-emitting element is formed between the first transparent conductive layer of the second organic light-emitting element and the second transparent conductive layer of the second organic light-emitting element, and

the reflection layer of the third organic light-emitting element is formed between the second transparent conductive layer of the third organic light-emitting element and the organic compound layer of the third organic light-emitting element.

3. The organic light-emitting device according to claim 2 , wherein the second transparent conductive layer in the first organic light-emitting element, the second transparent conductive layer in the second organic light-emitting element and the second transparent conductive layer in the third organic light-emitting element have the same thickness.

4. The organic light-emitting device according to claim 1 , wherein

the first electrode of the first and second organic light-emitting elements has respectively a third transparent conductive layer on the organic compound layer side of the first transparent conductive layer, and

the reflection layer of the first organic light-emitting element is formed between the substrate and the first transparent conductive layer of the first organic light-emitting element, and

the reflection layer of the second organic light-emitting element is formed between the first transparent conductive layer and the third transparent conductive layer of the second organic light-emitting element.

5. The organic light-emitting device according to claim 4 , wherein the third transparent conductive layer in the first organic light-emitting element and the third transparent conductive layer in the second organic light-emitting element have the same thickness.

6. The organic light-emitting device according to claim 1 , wherein an optical path length between the light-emitting layer and the reflection layer of each of the organic light-emitting elements is set so as to amplify a central wavelength in an emission spectrum of the light-emitting layer in each of the organic light-emitting elements.

7. The organic light-emitting device according to claim 1 , wherein

the organic compound layer has an organic functional layer of injecting and transporting an electric charge, and

the organic functional layer is commonly formed on the first organic light-emitting element and the second organic light-emitting element.

8. The organic light-emitting device according to claim 1 , further comprising a sealing layer.

9. A display apparatus having the organic light-emitting device according to claim 1 .

10. A method for producing an organic light-emitting device comprising a plurality of organic light-emitting elements including a first organic light-emitting element which emits a light of a first emission color and a second organic light-emitting element which emits a light of a second emission color different from the first emission color, comprising the steps of:

forming a first electrode having a light reflection layer and a first transparent conductive layer on a substrate;

forming an organic compound layer including a light-emitting layer on the first electrode; and

forming a second electrode on the organic compound layer,

wherein the step of forming the first electrode comprises, in mentioned order:

a step of forming the light reflection layer on a region of the first organic light-emitting element,

a step of commonly forming the first transparent conductive layer on both regions of the first and second organic light-emitting elements,

a step of forming the light reflection layer on the region of the second organic light-emitting element, and

a step of removing the transparent conductive layer formed between the elements.

11. An organic light-emitting device, comprising:

a substrate; and

a plurality of organic light-emitting elements formed on the substrate,

wherein the plurality of the organic light-emitting elements include a first organic light-emitting element which emits a light of a first emission color, and a second organic light-emitting element which emits a light of a second emission color different from the first emission color,

wherein each of the organic light-emitting elements has a first electrode, an organic compound layer containing a light-emitting layer, and a second electrode in this order on the substrate,

wherein the first electrode of the first and second organic light-emitting elements has a light reflection layer and a first transparent conductive layer,

wherein the light reflection layer of the first organic light-emitting element is formed between the substrate and the first transparent conductive layer of the first organic light-emitting element, and

wherein the light reflection layer of the second organic light-emitting element is formed between the first transparent conductive layer of the second organic light-emitting element and the organic compound layer of the second organic light-emitting element.