Organic light-emitting display apparatus and fabrication method thereof

Patent metadata

Field	Value
Publication number	US-12089434-B2
Application number	US-202318452515-A
Country	US
Kind code	B2
Filing date	Aug 18, 2023
Priority date	Feb 16, 2016
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

An organic light-emitting display apparatus includes a display substrate and a thin film encapsulation layer on the display substrate. The display substrate includes at least one hole, a thin film transistor, a light-emitting portion electrically connected to the thin film transistor, and a plurality of insulating layers. The light-emitting portion includes a first electrode, an intermediate layer, and a second electrode. The display substrate includes an active area, an inactive area between the active area and the hole, and a plurality of insulating dams. Each insulating dam includes at least one layer. The inactive area includes a first area different from a laser-etched area and a second laser-etched area.

First claim

What is claimed is:

1. An organic light-emitting display apparatus, comprising:
a substrate including a front surface and a rear surface, the substrate having a hole that passes from the front surface to the rear surface;
an organic light-emitting element in an active area, the active area surrounding the hole of the substrate in a plan view, the organic light-emitting element comprising a first electrode, a second electrode, an intermediate layer between the first electrode and the second electrode;
a first dam located in an inactive area between the active area and the hole; and
an encapsulation layer comprising a first inorganic layer and an organic layer, wherein the first inorganic layer and the organic layer overlap the organic light-emitting element in the active area,
wherein the intermediate layer comprises:
an emissive layer overlapping the first electrode; and
a common layer comprising a first portion between the first electrode and the second electrode in the active area and a plurality of second portions arranged in the inactive area.

2. The organic light-emitting display apparatus of claim 1 , wherein one of the plurality of second portions of the common layer is on an upper surface of the first dam.

3. The organic light-emitting display apparatus of claim 1 , further comprising:
at least one inorganic insulating layer between the substrate and the organic light-emitting element, wherein the at least one inorganic insulating layer extends to the inactive area, and
wherein the first dam is on the at least one inorganic insulating layer.

4. The organic light-emitting display apparatus of claim 3 , wherein an edge of the first portion of the common layer is on the at least one inorganic insulating layer.

5. The organic light-emitting display apparatus of claim 1 , wherein the second electrode of the organic light-emitting element comprises a first portion in the active area and a plurality of second portions arranged in the inactive area.

6. The organic light-emitting display apparatus of claim 5 , wherein an edge of the first portion of the second electrode is overlapped with a portion of the first inorganic layer and a portion of the organic layer of the encapsulation layer.

7. The organic light-emitting display apparatus of claim 5 , wherein one of the plurality of second portions of the second electrode is on an upper surface of the first dam.

8. The organic light-emitting display apparatus of claim 5 , wherein the plurality of second portions of the second electrode and the plurality of second portions of the common layer overlap each other in the inactive area.

9. The organic light-emitting display apparatus of claim 8 , further comprising a second dam in the inactive area,
wherein:
one of the plurality of second portions of the second electrode and one of the plurality of second portions of the common layer overlap each other on an upper surface of the first dam; and
another one of the plurality of second portions of the second electrode and another one of the plurality of second portions of the common layer overlap each other on an upper surface of the second dam.

10. The organic light-emitting display apparatus of claim 5 , wherein:
an edge of the first portion of the second electrode and an edge of the first portion of the common layer are covered with the first inorganic layer of the encapsulation layer.

11. The organic light-emitting display apparatus of claim 5 , wherein a portion of the organic layer of the encapsulation layer overlaps a first gap region and a second gap region, wherein:
the first gap region is a region between an edge of the first portion of the common layer and an edge of a second portion that is located closest to the active area from among the plurality of second portions of the common layer; and
the second gap region is a region between an edge of the first portion of the second electrode and an edge of a second portion that is located closest to the active area from among the plurality of second portions of the second electrode.

12. An organic light-emitting display apparatus, comprising:
a substrate including a front surface and a rear surface, the substrate having a hole that passes from the front surface to the rear surface;
an organic light-emitting element in an active area, the active area surrounding the hole of the substrate in a plan view, the organic light-emitting element comprising a first electrode, a second electrode, and an intermediate layer between the first electrode and the second electrode;
a first dam and a second dam located in an inactive area between the active area and the hole; and
an encapsulation layer comprising a first inorganic layer and an organic layer, wherein the first inorganic layer and the organic layer overlap the organic light-emitting element in the active area,
wherein the intermediate layer comprises:
an emissive layer overlapping the first electrode; and
a common layer comprising a first portion, a second portion, and a third portion, the first portion being located between the first electrode and the second electrode in the active area, the second and third portions arranged in the inactive area,

wherein the second portion of the common layer overlaps the first dam, and the third portion of the common layer overlaps the second dam, and
wherein the first portion, the second portion, the third portion of the common layer are spaced from each other.

13. The organic light-emitting display apparatus of claim 12 , further comprising:
at least one inorganic insulating layer between the substrate and the organic light-emitting element, wherein the at least one inorganic insulating layer extends to the inactive area,
wherein the first dam and the second dam are on the at least one inorganic insulating layer, and
wherein an edge of the first portion of the common layer is on the at least one inorganic insulating layer.

14. The organic light-emitting display apparatus of claim 13 , wherein the second electrode of the organic light-emitting element comprises a first portion overlapping the first electrode in the active area, and
wherein the first portion of the second electrode extends to the inactive area and an edge of the first portion of the second electrode is on the at least one inorganic insulating layer in the active area.

15. The organic light-emitting display apparatus of claim 14 , wherein the second electrode of the organic light-emitting element further comprises a plurality of second portions arranged in the inactive area and being spaced from each other, and
wherein the plurality of second portions of the second electrode is spaced from the first portion of the second electrode.

16. The organic light-emitting display apparatus of claim 14 , wherein an edge of the first portion of the second electrode and an edge of the first portion of the common layer overlap with the organic layer of the encapsulation layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Sunkwang
• Kang Kinyeng
• Sim Suyeon
• Choi Jonghyun

Classifications

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/8723

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title

• H10K50/844 Primary

  Encapsulations · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title