ORGANIC EL DEVICE MANUFACTURING METHOD, ORGANIC EL DEVICE, AND ELECTRONIC APPARATUS

• US 20110101398A1
• Filed: 10/26/2010
• Published: 05/05/2011
• Est. Priority Date: 11/03/2009
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: UCHIDA, Masahiro
• Granted Patent: US 8,691,603 B2
• Time in Patent Office: Days
• US Class Current: 257/98
• CPC Class Codes: H10K 50/171 Electron injection layers
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 85/115 Polyfluorene; Derivatives thereof
• CPC Class Codes: H10K 85/151 Copolymers
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3

Abstract

In a method for manufacturing an organic EL device, a first luminescent layer emitting first color light is formed over a first anode disposed on a substrate by coating. A second luminescent layer emitting second color light is formed over a second anode disposed on the substrate. An intermediate layer having electron injection performance is formed on the first luminescent layer and the second luminescent layer. A third luminescent layer emitting third color light is formed over the intermediate layer and a third anode disposed on the substrate by vapor deposition. A cathode is formed on the third luminescent layer.

Claims

1. A method for manufacturing an organic EL device, comprising:

forming a first luminescent layer emitting first color light by coating over a first anode disposed on a substrate;

forming a second luminescent layer emitting second color light by coating over a second anode disposed on the substrate;

forming an intermediate layer having electron injection performance on the first luminescent layer and the second luminescent layer;

forming a third luminescent layer emitting third color light by vapor deposition over the intermediate layer and a third anode disposed on the substrate; and

forming a cathode on the third luminescent layer.

2. The method according to claim 1, wherein the first luminescent layer is a red luminescent layer, the second luminescent layer is a green luminescent layer, and the third luminescent layer is a blue luminescent layer.

3. The method according to claim 1, wherein the third luminescent layer includes a layer having hole transport performance and a layer having electron transport performance.

4. The method according to claim 1, further comprising forming at least one of a hole injection layer and a hole transport layer between the first anode and the first luminescent layer and between the second anode and the second luminescent layer.

5. The method according to claim 1, further comprising forming at least one of a hole injection layer and a hole transport layer between the third anode and the third luminescent layer.

6. The method according to claim 5, wherein the intermediate layer is formed between the hole injection layer or the hole transport layer and the third luminescent layer.

7. The method according to claim 1, wherein the intermediate layer is formed in a region including a portion between the third anode and the third luminescent layer.

8. The method according to claim 1, wherein the intermediate layer is formed by coating.

9. The method according to claim 1, wherein the intermediate layer is formed by vapor deposition.

10. The method according to claim 8, wherein the coating is an ink jet method.

11. The method according to claim 1, wherein the intermediate layer contains cesium carbonate.

12. The method according to claim 1, further comprising forming a color conversion layer.

15. An electronic apparatus comprising an organic EL device manufactured by the method as set forth in claim 1.

13. An organic EL device comprising:

a substrate;

a first luminescent layer emitting first color light, formed over a first anode disposed on the substrate by coating;

a second luminescent layer emitting second color light, formed on a second anode disposed on the substrate by coating;

a third luminescent layer emitting third color light, formed by vapor deposition over the first luminescent layer and the second luminescent layer and in a region including the portion overlying a third anode disposed on the substrate;

a cathode disposed on the third luminescent layer, and

an intermediate layer having electron injection performance between the first luminescent layer and the third luminescent layer and between the second luminescent layer and the third luminescent layer.

14. The organic EL device according to claim 13, wherein the first luminescent layer emits red light, the second luminescent layer emits green light, and the third luminescent layer emits blue light.

16. An electronic apparatus comprising an organic EL device as set forth in claim 13.

17. An electronic apparatus comprising an organic EL device as set forth in claim 14.