ORGANIC ELECTROLUMINESCENCE UNIT, METHOD OF MANUFACTURING ORGANIC ELECTROLUMINESCENCE UNIT, AND ELECTRONIC APPARATUS

1 . An organic electroluminescence unit comprising:

a plurality of light-emitting layers of different colors;

a first electrode and a second electrode applying a voltage to each of the plurality of light-emitting layers; and

a charge transport layer disposed between one or more light-emitting layers of the plurality of light-emitting layers and the first electrode.

2 . The organic electroluminescence unit according to claim 1 , wherein

the plurality of light-emitting layers include a first light-emitting layer and a second light-emitting layer separately for each pixel, and

the charge transport layer is formed on a side closer to the first electrode of the second light-emitting layer of the first and second light-emitting layers.

3 . The organic electroluminescence unit according to claim 2 , wherein the charge transport layer is continuously disposed on a side closer to the second electrode of the first light-emitting layer and a side closer to the first electrode of the second light-emitting layer.

4 . The organic electroluminescence unit according to claim 2 , further including a red pixel, a green pixel, and a blue pixel,

wherein a red light-emitting layer is formed as the first light-emitting layer in the red pixel, and a green light-emitting layer is formed as the second light-emitting layer in the green pixel.

5 . The organic electroluminescence unit according to claim 2 , further including a red pixel, a green pixel, and a blue pixel,

wherein a green light-emitting layer is formed as the first light-emitting layer in the green pixel, and a red light-emitting layer is formed as the second light-emitting layer in the red pixel.

6 . The organic electroluminescence unit according to claim 4 , wherein

the blue pixel includes a blue light-emitting layer, and

the charge transport layer is also disposed on a side closer to the first electrode of the blue light-emitting layer in the blue pixel.

7 . The organic electroluminescence unit according to claim 2 , further comprising a red pixel, a green pixel, and a blue pixel,

wherein a yellow light-emitting layer is included in the red pixel and the green pixel, and

a blue light-emitting layer is included in the blue pixel.

8 . The organic electroluminescence unit according to claim 7 , wherein the charge transport layer is formed on a side closer to the first electrode of the blue light-emitting layer in the blue pixel.

9 . The organic electroluminescence unit according to claim 7 , wherein the blue light-emitting layer is so formed as to extend to regions on the red light-emitting layer and the green light-emitting layer.

10 . The organic electroluminescence unit according to claim 1 , wherein the charge transport layer is made of a hole transport material.

11 . The organic electroluminescence unit according to claim 2 , wherein the first light-emitting layer includes siloxane.

12 . A method of manufacturing an organic electroluminescence unit comprising:

forming a first electrode;

forming a plurality of light-emitting layers of different colors on the first electrode; and

forming a second electrode on the plurality of light-emitting layers,

wherein in the forming of the light-emitting layers, one of the plurality of light-emitting layers is formed, and then a charge transport layer is formed between one or more other light-emitting layers and the first electrode.

13 . The method of manufacturing the organic electroluminescence unit according to claim 12 , wherein

in the forming of the light-emitting layers, a first light-emitting layer and a second light-emitting layer are formed in this order by printing with use of one or two kinds of plates, and

the charge transport layer is formed with use of a plate for forming the second light-emitting layer after the forming of the first light-emitting layer.

14 . The method of manufacturing the organic electroluminescence unit according to claim 13 , wherein

the second light-emitting layer and the charge transport layer are formed in a laminate form after the forming of the first light-emitting layer.

15 . The method of manufacturing the organic electroluminescence unit according to claim 14 , wherein a red light-emitting layer is formed as the first light-emitting layer in a red pixel region, and a green light-emitting layer is formed as the second light-emitting layer in a green pixel region.

16 . The method of manufacturing the organic electroluminescence unit according to claim 15 , wherein the red light-emitting layer and the green light-emitting layer are formed, and then a blue light-emitting layer is formed from regions on the red light-emitting layer and the green light-emitting layer to a blue pixel region.

17 . The method of manufacturing the organic electroluminescence unit according to claim 12 , wherein a yellow light-emitting layer is formed as the first light-emitting layer in a red pixel region and a green pixel region, and a blue light-emitting layer is formed as the second light-emitting layer in a blue pixel region.

18 . The method of manufacturing the organic electroluminescence unit according to claim 12 , wherein the plurality of light-emitting layers and the charge transport layer are formed by a plate printing method.

19 . The method of manufacturing the organic electroluminescence unit according to claim 12 , wherein the plurality of light-emitting layers and the charge transport layer are formed by a reverse offset printing method.

20 . An electronic apparatus including an organic electroluminescence unit, the organic electroluminescence unit comprising:

a plurality of light-emitting layers of different colors;

a first electrode and a second electrode applying a voltage to each of the plurality of light-emitting layers; and

a charge transport layer disposed between one or more light-emitting layers of the plurality of light-emitting layers and the first electrode.