IP Library Granted Patent US 9,722,204
Granted Patent B2
US 9,722,204 · App. 14/984,905 · Granted Aug 1, 2017

Display device

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,722,204
App. No.
14/984,905
Granted
Aug 1, 2017
Kind
B2
Abstract

A display device is provided including a display region arranged with a plurality of pixels, and a first sealing region arranged in an exterior periphery part of the display region, the display region includes an individual pixel electrode arranged in each of the plurality of pixels, a common pixel electrode arranged in upper layer of the individual pixel electrode and in succession to the plurality of pixels, and a light emitting layer arranged between the individual pixel electrode and the common pixel electrode, and the first sealing region includes a sealing layer arranged on a lower layer than the common pixel electrode and a region stacked with the common pixel electrode extending from the display region, the stacked region being enclosed by the display region.

Claims (39)

1. A display device comprising:

a display region arranged with a plurality of pixels;

a first sealing region arranged in an exterior periphery part of the display region; and

a bank arranged so as to enclose the display region,

wherein:

the display region includes an individual pixel electrode arranged in each of the plurality of pixels, a common pixel electrode over the individual pixel electrode and in succession to the plurality of pixels, and a light emitting layer arranged between the individual pixel electrode and the common pixel electrode;

the first sealing region includes a sealing layer arranged on a lower layer than the common pixel electrode and a region stacked with the common pixel electrode extending from the display region, the stacked region enclosing the display region;

an end of the light emitting layer and the bank are separated from each other;

the bank is arranged so as to cover an end part of the sealing layer; and

the common pixel electrode and the sealing layer cover the end of the light emitting layer.

2. The display device according to claim 1 , wherein the light emitting layer is arranged extending to the first sealing region and overlaps a part of the sealing layer in the exterior periphery part.

3. The display device according to claim 2 , wherein the sealing layer is formed from a conductive material.

4. The display device according to claim 3 , wherein the sealing layer includes the same layer structure as the individual pixel electrode.

5. The display device according to claim 4 further comprising:

a low voltage power source wire,

wherein the sealing layer is conductive with the low voltage power source wire.

6. The display device according to claim 5 further comprising:

an insulation layer arranged below the individual pixel electrode; and

an auxiliary electrode arranged below the insulation layer.

7. The display device according to claim 6 , wherein the common pixel electrode contacts the auxiliary electrode and a region contacting the auxiliary electrode encloses the first sealing region.

8. The display device according to claim 7 further comprising:

a second sealing region enclosing the first sealing region.

9. The display device according to claim 1 , wherein the light emitting layer includes a common light emitting layer arranged in common with the plurality of pixels.

10. The display device according to claim 1 further comprising:

an individual light emitting layer arranged for each pixel, the individual light emitting layer being one of a red light emitting layer, green light emitting layer, blue light emitting layer, and white light emitting layer.

11. The display device according to claim 1 , wherein the bank is arranged so as to cover an end part of the sealing layer.

12. The display device according to claim 1 further comprising:

a substrate,

wherein the sealing layer is arranged between the substrate and the common pixel electrode.

13. The display device according to claim 1 further comprising:

a filler,

wherein the sealing layer overlaps the filler.

14. The display device according to claim 1 , wherein the stacked region includes a region where the sealing layer and the common pixel electrode contact with each other, the contact region enclosing the display region.

15. The display device according to claim 1 , wherein an end of the light emitting layer is arranged in the stacked region.

16. The display device according to claim 1 , wherein the light emitting layer contacts with the common electrode in the stacked region.

17. The display device according to claim 2 , wherein the light emitting layer contacts with a part of the sealing layer.

18. The display device according to claim 1 , wherein an end part of the light emitting layer extends within a region of 20 μm or more and 250 μm or less to the exterior side of the display region from a pixel arranged on the outermost periphery among the plurality of pixels.

19. The display device according to claim 1 , wherein the sealing layer includes an inorganic material.

20. The display device according to claim 1 , wherein the bank and the sealing layer partially overlap with each other.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 30, 2015
From: HANARI, JUN
To: JAPAN DISPLAY INC.
Reel/Frame 037386/0868 →