Organic electroluminescence device and manufacturing method therefor

• US 20050134171A1
• Filed: 01/11/2005
• Published: 06/23/2005
• Est. Priority Date: 02/25/2000
• Status: Active Grant

• Current Assignee: Element Capital Commercial Company Pte. Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Kobayashi, Hidekazu
• Granted Patent: US 7,427,832 B2
• Time in Patent Office: Days
• US Class Current: 313/504
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 2102/321 Inverted OLED, i.e. having cathode between substrate and anode
• CPC Class Codes: H10K 50/814 combined with auxiliary electrodes, e.g. ITO layer combined with metal lines
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/80516 combined with auxiliary electrodes, e.g. ITO layer combined with metal lines
• CPC Class Codes: H10K 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/8792 comprising light absorbing layers, e.g. black layers

Abstract

An organic EL device in accordance with the invention has a structure in which a first electrode, a light-emitting layer, and a second electrode are formed on a substrate in this order, and light from the light-emitting layer is emitted to an exterior of the device via the second electrode.

Claims

1. An organic EL device, comprising:

a substrate;

a cathode formed over the substrate;

a light-emitting layer formed over the cathode; and

an anode formed over the light-emitting layer wherein the cathode includes a laminate of a metal and at least one of a metal oxide and a fluoride.

2. An organic EL device comprising:

a substrate;

a plurality of pixels,

a plurality of first electrodes corresponding to each of the plurality of pixels being formed on the substrate,

a light-emitting layer formed over the first electrodes;

a pixel partition including an insulating material being formed between the pixels,

an auxiliary electrode including a conductive material and having a pattern equivalent to that of the partition being formed at a position corresponding to a top surface of the partition that includes the insulating material; and

a second electrode continuous over the light-emitting layer and the auxiliary electrode.

9. The organic EL device according to claim 2, the pixel partition including a first layer and second layer.

10. The organic EL device according to claim 9, the first layer protruding from the second layer and delineating the light-emitting layer.

3. An organic EL device comprising:

a substrate;

a plurality of pixels,

a plurality of first electrodes corresponding to each of the plurality of pixels being formed on the substrate,

a pixel partition including an insulating material being formed between the pixels,

a light-emitting layer formed over the first electrodes;

a second electrode continuous over the light-emitting layer and the pixel partition;

a auxiliary electrode including a conductive material being formed over the second electrode at a position corresponding to the pixel partition.

4. The organic EL device according to claim 3, the auxiliary electrode including a light-absorbing conductive material.

7. The organic EL device according to claim 3, the substrate being a semiconductor substrate having an integrated circuit formed thereon.

8. The organic EL device according to claim 3, wherein, after at least one of the second electrode and the auxiliary electrode are formed, a protective substrate having a light-absorbing layer formed at a position corresponding to a position between the pixels is disposed so that the pixel and an area of the protective substrate corresponding to the pixel are aligned with each other, and the protective substrate is subsequently bonded thereto with a sealing resin provided therebetween.

11. The organic EL device according to claim 3, the pixel partition including a first layer and a second layer.

12. The organic EL device according to claim 11, the first layer protruding from the second layer and delineating the light-emitting layer.

13. The organic EL device according to claim 3, the auxiliary electrode including a light-absorbing conductive material.

14. The organic EL device according to claim 13, the auxiliary electrode including carbon or chromium.

17. The organ EL device according to claim 7, the integrated circuit including at least one of a controller, a power supply circuit, an X driver and a Y driver.

5. The organic EL device according to claim 5, the auxiliary electrode including carbon or chromium.

6. An organic EL device comprising:

a substrate;

a plurality of pixels disposed over the substrate;

an active matrix structure provided in each of the plurality of pixels, and

a laminate structure of a cathode, a light-emitting layer, and an anode being formed so as to overlap at least a part of the active matrix structure when viewed from a top surface of the device.

15. The organic EL device according to claim 6, the active matrix structure including switching element.

16. The organic EL device according to claim 6, light from the light-emitting layer being emitted outside toward a direction opposite the substrate with respect to the light-emitting layer.