Display device

Patent metadata

Field	Value
Publication number	US-12137590-B2
Application number	US-202117504444-A
Country	US
Kind code	B2
Filing date	Oct 18, 2021
Priority date	Feb 10, 2021
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A display device includes: a light-emitting diode including a first electrode, a second electrode arranged on the first electrode, and an intermediate layer between the first electrode and the second electrode; a bus electrode spaced apart from the first electrode of the light-emitting diode; a bank layer covering an edge of the first electrode and an edge of the bus electrode, and exposing a portion of the first electrode and a portion of the bus electrode; and an insulating pattern layer arranged on the bus electrode, and including a first opening overlapping a first opening, wherein the second electrode contacts the bus electrode through the first opening of the insulating pattern layer.

First claim

What is claimed is:

1. A display device comprising:
a light-emitting diode comprising a first electrode, a second electrode arranged on the first electrode, and an intermediate layer between the first electrode and the second electrode;
a bus electrode spaced apart from the first electrode of the light-emitting diode;
a bank layer covering an edge of the first electrode and an edge of the bus electrode, and exposing a portion of the first electrode and a portion of the bus electrode; and
an insulating pattern layer arranged on the bus electrode, and comprising a first opening overlapping the bus electrode, wherein

the second electrode contacts the bus electrode through the first opening of the insulating pattern layer,
the intermediate layer is arranged on an upper surface of the first electrode, an upper surface of the bus electrode, and an upper surface of the bank layer, and comprises a second opening overlapping the first opening, and
a width of the second opening of the intermediate layer is greater than a width of the first opening of the insulating pattern layer.

2. The display device of claim 1 , wherein the insulating pattern layer includes an inorganic insulating material.

3. The display device of claim 1 , wherein, in a plan view, an edge of the first opening is located within the second opening.

4. The display device of claim 1 , wherein the second electrode contacts an upper surface of the intermediate layer, an upper surface of a portion of the insulating pattern layer surrounding an edge of the first opening, and the upper surface of the bus electrode.

5. The display device of claim 3 , wherein the intermediate layer comprises an emission layer and a functional layer that includes at least one selected from a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer, and
the second opening penetrates through the emission layer and the functional layer.

6. The display device of claim 1 , wherein the bank layer comprises a bank opening corresponding to the bus electrode, and
a width of the bank opening is greater than a width of the first opening.

7. The display device of claim 1 , wherein the first electrode and the bus electrode are located on a same layer and include a same material.

8. The display device of claim 1 , further comprising a common voltage line electrically connected to the bus electrode,
wherein the common voltage line is electrically connected to an auxiliary pattern that overlaps the common voltage line and is arranged on a different layer from the common voltage line.

9. The display device of claim 8 , further comprising an auxiliary line extending in a direction crossing the common voltage line.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seho
• Kim Taehyung
• Lee Yongdae
• Kim Hyoyeon
• Yang Taehyeon
• Lee Chulsoon
• Jin Changgwi

Classifications

• H10K59/805

  Electrodes · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K71/00

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

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K50/805

  Electrodes · CPC title