DISPLAY UNIT, METHOD OF MANUFACTURING THE SAME, AND ELECTRONIC APPARATUS

• US 20140312329A1
• Filed: 04/14/2014
• Published: 10/23/2014
• Est. Priority Date: 04/19/2013
• Status: Abandoned Application

• Current Assignee: JOLED Inc.
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Fujii, Takuma, Fujioka, Hirofumi, Nishikawa, Tomotaka, Maegawa, Tatsuya
• Application Number:
  US14/251,896
• Publication Number:
  US 20140312329A1
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: H10K 50/824 combined with auxiliary electrodes
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/80522 combined with auxiliary electrodes

Abstract

Provided is a display unit that includes: first electrodes; a metal member provided around the first electrodes; an insulating layer having a first opening on corresponding one of the first electrodes and a second opening on the metal member; an organic light emission layer provided on a surface including a bottom surface of the first opening, except for whole or part of a bottom surface of the second opening; a partition wall arranged in contact with at least the insulating layer, in which the partition wall is formed in a process different from a process of forming the insulating layer; and a second electrode provided in contact with a contact region and a portion above the bottom surface of the first opening in the organic light emission layer, in which the contact region is part of the bottom surface of the second opening.

Claims

1. A display unit comprising:

a plurality of first electrodes;

a metal member provided around the first electrodes;

an insulating layer having a first opening on corresponding one of the first electrodes and a second opening on the metal member;

an organic light emission layer provided on a surface including a bottom surface of the first opening, except for whole or part of a bottom surface of the second opening;

a partition wall arranged in contact with at least the insulating layer out of part of the bottom surface of the second opening and the insulating layer, the partition wall being formed in a process different from a process of forming the insulating layer; and

a second electrode provided in contact with a contact region and in contact with a portion above the bottom surface of the first opening in the organic light emission layer, the contact region being part of the bottom surface of the second opening.

2. The display unit according to claim 1, wherein the partition wall is in contact with both the part of the bottom surface of the second opening and the insulating layer.

3. The display unit according to claim 2, wherein a side surface of the first opening is tilted aslant more than a side surface of the partition wall.

4. The display unit according to claim 2, wherein the partition wall is formed to surround part of the contact region in a range from about 180 degrees to a value less than about 360 degrees in a plane.

5. The display unit according to claim 2, wherein the partition wall includes convex sections projecting in two directions other than 180 degrees in a plane direction.

6. The display unit according to claim 2, wherein the partition wall is arranged to be opposed to corresponding one of the first electrodes with the contact region in between in a plane.

7. The display unit according to claim 6, wherein

the organic light emission layer has a shape of a strip that is formed continuously in a column direction and steps over the plurality of first electrodes, and

the contact region and the partition wall are arranged in a gap between two of the plurality of first electrodes adjacent to each other in the column direction.

8. The display unit according to claim 2, wherein the second electrode is made of a light-transmissive electrically-conductive material containing one or both of Ca and Li.

9. The display unit according to claim 2, wherein the contact region is formed to be downward-sloping more with distance from a side surface of the partition wall.

10. An electronic apparatus provided with a display unit, the display unit comprising:

a plurality of first electrodes;

a metal member provided around the first electrodes;

an insulating layer having a first opening on corresponding one of the first electrodes and a second opening on the metal member;

an organic light emission layer provided on a surface including a bottom surface of the first opening, except for whole or part of a bottom surface of the second opening;

a partition wall arranged in contact with at least the insulating layer out of part of the bottom surface of the second opening and the insulating layer, the partition wall being formed in a process different from a process of forming the insulating layer; and

a second electrode provided in contact with a contact region and in contact with a portion above the bottom surface of the first opening in the organic light emission layer, the contact region being part of the bottom surface of the second opening.

11. A method of manufacturing a display unit, the method comprising:

forming an insulating layer having a first opening on corresponding one of a plurality of first electrodes and a second opening on a metal member, the metal member being provided around the first electrodes;

forming, by a vapor-phase diffusion method, a partition wall to be in contact with at least the insulating layer out of part of a bottom surface of the second opening and the insulating layer;

forming, by a vapor-phase deposition method, an organic light emission layer on a surface including a bottom surface of the first opening, except for whole or part of the bottom surface of the second opening; and

forming, by a vapor-phase deposition method in which deflection of an incident angle is decreased compared to the vapor-phase deposition method used upon forming the organic light emission layer, a second electrode in contact with a contact region and in contact with a portion above the bottom surface of the first opening in the organic light emission layer, the contact region being part of the bottom surface of the second opening.

12. The method of manufacturing the display unit according to claim 11, wherein

a side surface of the partition wall is inversely-tapered, and

a main incident angle of a material of the organic light emission layer is set perpendicular to the metal member in the forming the organic light emission layer.

13. The method of manufacturing the display unit according to claim 11, wherein

a side surface of the partition wall is tapered or vertical, and

a main incident angle of a material of the organic light emission layer is set oblique with respect to the metal member in the forming the organic light emission layer.