Organic electro luminescence device and electronic apparatus

• US 6,897,934 B2
• Filed: 03/14/2002
• Issued: 05/24/2005
• Est. Priority Date: 03/16/2001
• Status: Expired due to Term

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Uchida, Masahiro
• Primary Examiner(s): Philogene, Haissa
• Application Number:
  US10/096,950
• Publication Number:
  US 20020136925A1
• Time in Patent Office: 1,167 Days
• Field of Search: 315/169.3, 315/169.1, 313/491, 313/503, 313/506, 313/520, 257/10, 257/40, 257/43, 257/44, 257/98, 257/99, 257/103, 257/E21.514, 349/140, 349/147, 349/149, 349/151, 349/152, 349/156, 349/158, 349/148, 349/159, 438/149, 438/151
• US Class Current: 349/152
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 59/10 OLED displays
• CPC Class Codes: H10K 59/1795 comprising structures specially adapted for lowering the resistance
• CPC Class Codes: H10K 59/19 Segment displays
• CPC Class Codes: H10K 59/805 Electrodes
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine

Abstract

In an electronic apparatus wherein the terminal of an organic EL device is connected to the terminal of a drive circuit substrate by an anisotropic conductive member, contact resistance between the terminals of the organic EL device and the anisotropic conductive member is reduced, enabling the drive voltage of the organic EL device to be reduced. Terminal covering sections comprise aluminum thin-films, and are provided independently over terminals for anode and the terminal for cathode of the organic EL device. These terminals are made by patterning of an ITO thin-film, as are wirings between the anode and anode terminals of the organic EL device. Continuity paths of an anisotropic conductive rubber member connect the terminals of the organic EL device to terminals of a drive circuit substrate. At this time, the end face of the anisotropic conductive rubber member on the top side of the continuity paths touches the terminal covering sections.

Claims

1. An organic electro luminescence device comprising:

an organic electro luminescence element;

a first terminal which is connected to a cathode of the organic electro luminescence element; and

a second terminal which is connected to an anode of the organic electro luminescence element,

at least one of said terminals being covered by a material having higher conductivity and higher oxidation-resistance than the material of said terminals.

2. The organic electro luminescence device according to claim 1, the material of said terminals comprising ITO (In₂O₃—

SnO₂), and the covering material comprising one of aluminum (Al), silver (Ag), gold (Au), tantalum (Ta), tungsten (W), platinum (Pt), molybdenum (Mo), and chrome (Cr), or an alloy of these metals.

3. An electronic apparatus comprising:

a display;

a drive circuit substrate which supplies a drive current to the display; and

an anisotropic conductive member which connects a terminal of the display to a terminal of the drive circuit substrate, said display comprising the organic electro luminescence device according to claim 2.

4. An electronic apparatus comprising:

a display;

a drive circuit substrate which supplies a drive current to the display; and

an anisotropic conductive member which connects a terminal of the display to a terminal of the drive circuit substrate, said display comprising the organic electro luminescence device according to claim 1.

5. An electronic apparatus according to claim 4, the anisotropic conductive member being anisotropic conductive rubber.

12. An electronic apparatus according to claim 4, the anisotropic conductive member being anisotropic conductive film.

6. An electronic apparatus comprising a display comprising:

a drive circuit substrate which supplies a drive current to the display; and

an anisotropic conductive member which connects a terminal of the display to a terminal of the drive circuit substrate; and

a terminal covering section,

a contact resistance between the terminal of said display and the terminal of said anisotropic conductive member being reduced.

7. An electronic apparatus according to claim 6, the anisotropic conductive member being anisotropic conductive rubber.

8. An electronic apparatus according to claim 6, the anisotropic conductive member being anisotropic conductive film.

9. The electronic apparatus according to claim 6,

the material of the terminal of said display being ITO (In₂O₃—

SnO₂), and a layer comprising one of aluminum (Al), silver (Ag), gold (Au), tantalum (Ta), tungsten (W), platinum (Pt), molybdenum (Mo), and chrome (Cr), or an alloy of these metals being formed between the terminal and said anisotropic conductive member.

10. An electronic apparatus according to claim 9, the anisotropic conductive member being anisotropic conductive rubber.

11. An electronic apparatus according to claim 9, the anisotropic conductive member being anisotropic conductive film.

13. An electronic apparatus comprising:

a transparent cathode of an organic electro luminescence device;

a transparent insulating layer covering a surface of a substrate except light-emitting sections and terminal sections of the substrate, the substrate being connected to the cathode to drive the organic electro luminescence device; and

a dial that can be viewed through the organic electro luminescence device.

14. An electronic apparatus according to claim 13, further comprising an anisotropic conductive member, the anisotropic conductive member being anisotropic conductive rubber.

15. An electronic apparatus according to claim 13, further comprising an anisotropic conductive member, the anisotropic conductive member being anisotropic conductive film.