IP Library Granted Patent US 11,574,963
Granted Patent B2
US 11,574,963 · App. 17/033,126 · Granted Feb 7, 2023

Display device with opening in light-blocking member and method for repairing the same

Inventors: Jong-Hoon Kim (Seoul, KR); Jeong Ki Kim (Hwaseong-si, KR); Jea Heon Ahn (Hwaseong-si, KR); MyoungJong Lee (Chungcheongnam-do, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L27/322H01L51/5271H01L51/5284H01L51/56
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Quick Facts
Patent No.
US 11,574,963
App. No.
17/033,126
Granted
Feb 7, 2023
Kind
B2
Abstract

A display device having a first substrate including lower electrodes, an upper electrode and a light-emitting layer disposed between the lower electrodes and the upper electrode. A second substrate is combined with the first substrate and defines light-emitting areas. The second substrate includes a color filter layer overlapping the light-emitting areas. A light-blocking member overlaps a light-blocking area surrounding the light-emitting areas. The light-blocking member includes openings overlapping the lower electrodes.

Claims (51)

1. A display device comprising:

a first substrate including lower electrodes, an upper electrode and a light-emitting layer disposed between the lower electrodes and the upper electrode; and

a second substrate combined with the first substrate and defining light-emitting areas, the second substrate including:

a color filter layer overlapping the light-emitting areas; and

a light-blocking member overlapping a light-blocking area surrounding the light-emitting areas, the light-blocking member including openings overlapping the lower electrodes.

2. The display device of claim 1 , wherein the color filter layer includes:

a first color filter overlapping a first light-emitting area emitting light having a first color; and

a second color filter overlapping a second light-emitting area emitting light having a second color that is different from the first color.

3. The display device of claim 2 , wherein the light-blocking member comprises a portion of the second color filter.

4. The display device of claim 3 , wherein the first color filter is disposed in at least a portion of the openings of the light-blocking member.

5. The display device of claim 2 , wherein:

the second substrate further includes a color-converting layer overlapping the first light-emitting area; and

the color-converting layer is configured to convert a wavelength of an incident light to emit light having the first color.

6. The display device of claim 5 , wherein:

the light-blocking member is a partition wall having a receiving area; and

the color-converting layer is disposed in the receiving area.

7. The display device of claim 6 , wherein the second substrate further includes a compensation pattern disposed in the openings of the light-blocking member.

8. The display device of claim 1 , wherein at least one of the openings of the light-blocking member has a different shape from other openings of the light-blocking member.

9. A display device comprising:

a first substrate including pixel electrodes and a common electrode; and

a second substrate combined with the first substrate,

the second substrate defines a plurality of light-emitting areas, a light-blocking area surrounding the plurality of light-emitting areas and a marking area disposed in the light-blocking area;

wherein the marking area overlaps a corresponding pixel electrode and has a reflective characteristic to an external light that is different from a reflective characteristic of a remaining portion of the light-blocking area to the external light.

10. The display device of claim 9 , wherein the second substrate includes:

a color filter layer overlapping the plurality of light-emitting areas;

a color-converting layer overlapping at least a portion of the plurality of light-emitting areas; and

a partition wall overlapping the light-blocking area, the partition wall having a receiving area, wherein the color-converting layer is disposed in the receiving area.

11. The display device of claim 10 , wherein the color filter layer includes:

a first color filter overlapping a first light-emitting area emitting light having a first color; and

a second color filter overlapping the light-blocking layer and a second light-emitting area emitting light having a second color that is different from the first color.

12. The display device of claim 11 , wherein the second color filter includes an opening overlapping the marking area.

13. The display device of claim 12 , wherein the first color filter further overlaps the marking area and is disposed in the opening of the second color filter.

14. The display device of claim 11 , wherein the first color filter further overlaps the marking area.

15. The display device of claim 11 , wherein the partition wall includes an opening overlapping the marking area.

16. The display device of claim 15 , wherein the second substrate further includes a compensation pattern disposed in the opening of the partition wall.

17. A method for repairing a display device, the display device including a first substrate and a second substrate combined with the first substrate, the first substrate including pixel electrodes and a common electrode, wherein light-emitting areas, a light-blocking area surrounding the light-emitting areas and a plurality of marking areas disposed in the light-blocking area and respectively overlapping a corresponding pixel electrode are defined on the second substrate, the method comprising:

detecting a defective pixel of the display device; and

irradiating a laser onto a first marking area of the plurality of marking areas, the first marking area corresponding to the defective pixel.

18. The method of claim 17 , wherein the laser is a long-wavelength laser.

19. The method of claim 17 , wherein the plurality of marking areas has a reflective characteristic to an external light, which is different from a reflective characteristic of a remaining portion of the light-blocking area to the external light.

20. The method of claim 17 , wherein:

the second substrate includes a light-blocking member overlapping the light-blocking area; and

the light-blocking member includes openings overlapping the plurality of marking areas.

21. A display device comprising:

a first substrate including a plurality of pixel electrodes, a common electrode and a plurality of driving elements connected to the plurality of pixel electrodes at a plurality of contact areas; and

a second substrate combined with the first substrate, the second substrate including:

a color filter layer including a first color filter, a second color filter and a third color filter overlapping a first light-emitting area, a second light-emitting area and a third light-emitting area, respectively;

a light-blocking area surrounding the first light-emitting area, the second light-emitting area and the third light-emitting area;

first to third marking areas disposed in the light-blocking area adjacent to the first light-emitting area, the second light-emitting area and the third light-emitting area, respectively, the first to third marking areas overlapping the plurality of pixel electrodes;

wherein at least one of the first to third marking areas also overlaps one contact area of the plurality of contact areas.

22. The display device of claim 21 , wherein at least one of the first to third marking areas is disposed between one light-emitting area of the first to third light-emitting areas and one contact area of the plurality of contact areas.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 25, 2020
From: KIM, JONG-HOON; KIM, JEONG KI; AHN, JEA HEON; LEE, MYOUNGJONG
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 053891/0821 →
Priority Claims (1)
KR 10-2019-0169707 · Dec 18, 2019 · national
Continuity (1)
Related Publication 20210193742A1 · Jun 24, 2021