Organic electroluminescence device and manufacturing method therefor

• US 7,898,170 B2
• Filed: 06/19/2008
• Issued: 03/01/2011
• Est. Priority Date: 02/25/2000
• Status: Expired due to Fees

• Current Assignee: Element Capital Commercial Company Pte. Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Kobayashi, Hidekazu
• Primary Examiner(s): Patel; Nimeshkumar D
• Assistant Examiner(s): Bowman; Mary Ellen
• Application Number:
  US12/213,434
• Publication Number:
  US 20080258617A1
• Time in Patent Office: 985 Days
• Field of Search: 313/504, 445 24- 25, 315/169.3
• 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 plurality of first electrodes, each of the first electrodes corresponding to each of the pixels being formed on the substrate;

a light-emitting layer formed over the first electrodes;

a pixel partition including an insulating material positioned between the pixels;

an auxiliary electrode including a light-absorbing conductive material and having a pattern corresponding to a pattern of the pixel partition; and

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

2. The organic EL device according to claim 1, the substrate being a semiconductor substrate having an integrated circuit formed thereon.

3. The organic EL device according to claim 1, 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 pixels are aligned with each other, and the protective substrate is subsequently bonded thereto with a sealing resin provided therebetween.

4. The organic EL device according to claim 1, the pixel partition including a first layer and a second layer.

5. The organic EL device according to claim 4, the first layer protruding from the second layer and delineating the light-emitting layer.

6. The organic EL device according to claim 1, the auxiliary electrode including carbon or chromium.

7. The organic EL device according to claim 3, the integrated circuit including at least one of a controller, a power supply circuit, an X driver and a Y driver.