Display device and method of repairing the display device

Patent metadata

Field	Value
Publication number	US-12058912-B2
Application number	US-202117393671-A
Country	US
Kind code	B2
Filing date	Aug 4, 2021
Priority date	Nov 27, 2020
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

A display device includes: a lower substrate; a display element on the lower substrate and including an emission layer; an upper substrate on the lower substrate with the display element therebetween, where the upper substrate includes a central area overlapping the display element and an adjacent area adjacent to the central area; a bank layer on a lower surface of the upper substrate facing the lower substrate, where a central opening overlapping the central area, an adjacent opening overlapping the adjacent area, and a connection portion connecting the central opening and the adjacent opening to each other are defined in the bank layer; a blocking layer overlapping the connection portion; and a functional layer including at least one selected from a quantum dot and a scatterer, where the functional layer fills the central opening in which a connection to the adjacent opening is blocked by the blocking layer.

First claim

What is claimed is:

1. A display device comprising:
a lower substrate;
a display element disposed on the lower substrate, wherein the display element comprises an emission layer;
an upper substrate disposed on the lower substrate with the display element therebetween, wherein the upper substrate comprises a central area overlapping the display element and an adjacent area adjacent to the central area;
a bank layer disposed on a lower surface of the upper substrate facing the lower substrate, wherein a central opening overlapping the central area, an adjacent opening overlapping the adjacent area, and a connection portion connecting the central opening and the adjacent opening to each other are defined in the bank layer;
a blocking layer overlapping the connection portion; and
a functional layer comprising at least one selected from a quantum dot and a scatterer, wherein the functional layer fills the central opening in which a connection to the adjacent opening is blocked by the blocking layer.

2. The display device of claim 1 , wherein
the central opening comprises a first central opening and a second central opening,
the adjacent opening comprises a first adjacent opening adjacent to the first central opening, and a second adjacent opening adjacent to the second central opening,
the first central opening and the first adjacent opening are separated from each other, and
the second central opening and the second adjacent opening are connected to each other by the connection portion.

3. The display device of claim 1 , wherein
the bank layer comprises a first surface and a second surface facing each other and defining the connection portion, and
the blocking layer is in contact with the first surface and the second surface.

4. The display device of claim 1 , wherein
the central opening comprises a first central opening, a second central opening, and a third central opening,
the adjacent opening comprises a first adjacent opening adjacent to the first central opening, a second adjacent opening adjacent to the second central opening, and a third adjacent opening adjacent to the third central opening, and
the functional layer comprises a first quantum dot layer filling the first central opening, a second quantum dot layer filling the second central opening, and a transmission layer filling the third central opening.

5. The display device of claim 4 , wherein the blocking layer and at least one selected from the first quantum dot layer, the second quantum dot layer and the transmission layer include a same material as each other.

6. The display device of claim 1 , further comprising:
a color filter layer disposed between the upper substrate and the bank layer, wherein the color filter layer comprises a first color filter, a second color filter, and a third color filter,
wherein the first color filter, the second color filter, and the third color filter overlap each other,
an overlapping portion of the first color filter, the second color filter and the third color filter defines a light-shielding portion, and
the light-shielding portion overlaps the adjacent opening.

7. The display device of claim 6 , further comprising:
a capping layer disposed between the color filter layer and the functional layer.

8. The display device of claim 1 , wherein the blocking layer extends from the connection portion to the adjacent opening and fills the adjacent opening.

9. The display device of claim 1 , wherein the blocking layer comprises a first side facing the central opening, and a second side facing the adjacent opening.

10. A display device comprising:
a lower substrate;
a display element disposed on the lower substrate, wherein the display element comprises an emission layer;
an upper substrate disposed on the lower substrate with the display element therebetween, wherein the upper substrate includes a central area overlapping the display element and an adjacent area adjacent to the central area;
a bank layer disposed on a lower surface of the upper substrate facing the lower substrate, wherein a plurality of central openings overlapping the central area, a plurality of adjacent openings overlapping the adjacent area and adjacent to the plurality of central openings, and a connection portion connecting one of the plurality of central openings and an adjacent one of the plurality of adjacent openings to each other are defined in the bank layer;
a functional layer filling the plurality of central openings, wherein the functional layer comprises at least one selected from a quantum dot and a scatterer; and
a blocking layer overlapping the connection portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jonghoon
• Oh Hwayeul
• Lee Joongkeun
• Shin Kidae
• Im Seokhyun

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/877

  comprising scattering means · CPC title

• H10K71/861

  Repairing · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title