Display Device

Patent metadata

Field	Value
Publication number	US-2025275424-A1
Application number	US-202418914555-A
Country	US
Kind code	A1
Filing date	Oct 14, 2024
Priority date	Feb 27, 2024
Publication date	Aug 28, 2025
Grant date	—

Abstract

Embodiments of the disclosure relate to a display device and may provide a display device capable of delaying the time when moisture and oxygen penetrate into the display area by including a metal layer disposed at a boundary between the display area and the non-display area, a protective layer positioned on the metal layer and including a first portion overlapping the metal layer and a second portion positioned on the substrate and not overlapping the metal layer, and a photosensitive resin layer positioned between the substrate and the second portion.

First claim

What is claimed:

1 . A display device, comprising:
a substrate including a display area and a non-display area that surrounds the display area; a metal layer on the substrate and at a boundary between the display area and the non-display area; a protective layer on the metal layer, the protective layer including a first portion overlapping the metal layer and a second portion on the substrate and non-overlapping the metal layer; and a photosensitive resin layer between the substrate and the second portion.

2 . The display device of claim 1 , wherein the photosensitive resin layer includes at least one of a group II element, a group III element, or cerium.

3 . The display device of claim 2 , wherein the photosensitive resin layer includes at least one of magnesium, calcium, barium, aluminum, indium, titanium, or cerium.

4 . The display device of claim 1 , wherein the photosensitive resin layer is a positive photosensitive resin layer.

5 . The display device of claim 1 , further comprising:
a bank layer on the protective layer, wherein at least a portion of the bank layer overlaps the photosensitive resin layer.

6 . The display device of claim 5 , wherein the bank layer includes an ultraviolet blocking material.

7 . The display device of claim 1 , further comprising:
a light emitting layer on the protective layer, the light emitting layer having a thickness that is smaller than a thickness of the photosensitive resin layer; and a cathode electrode on the light emitting layer.

8 . The display device of claim 1 , wherein a distance between one end of the photosensitive resin layer and one end of the protective layer is larger than or equal to 0.2 μm and less than or equal to 1.0 μm.

9 . The display device of claim 1 , wherein the second portion includes an inclined portion overlapping at least a portion of the photosensitive resin layer, and an angle between a tangent line at an inflection point of the inclined portion and a bottom surface of the second portion is larger than or equal to 20 degrees and less than or equal to 40 degrees.

10 . A display device, comprising:
a substrate including a display area and a non-display area that surrounds the display area; a filler layer on the substrate at a boundary between the display area and the non-display area, the filler layer including a first portion including a metal or an alloy thereof and a second portion including a photosensitive resin; and a protective layer on the filler layer.

11 . The display device of claim 10 , wherein the first portion is a gate line.

12 . The display device of claim 10 , wherein the second portion includes at least one of a group II element, a group III element, or a cerium.

13 . The display device of claim 12 , wherein the second portion includes at least one of magnesium, calcium, barium, aluminum, indium, titanium, or cerium.

14 . The display device of claim 10 , wherein the photosensitive resin is a positive photosensitive resin.

15 . The display device of claim 10 , further comprising:
a bank layer on the protective layer, wherein at least a portion of the bank layer overlaps the second portion.

16 . The display device of claim 15 , wherein the bank layer includes an ultraviolet blocking material.

17 . The display device of claim 10 , further comprising:
a light emitting layer on the protective layer, the light emitting layer having a thickness that is smaller than a thickness of the filler layer; and a cathode electrode on the light emitting layer.

18 . The display device of claim 17 , further comprising:
a passivation layer over the cathode electrode, wherein the light emitting layer is disconnected by the cathode electrode and the passivation layer.

19 . The display device of claim 10 , wherein a distance between one end of the filler layer and one end of the protective layer is larger than or equal to 0.2 μm and less than or equal to 1.0 μm.

20 . The display device of claim 10 , wherein the protective layer includes an inclined portion overlapping at least a portion of the second portion, and an angle between a tangent line at an inflection point of the inclined portion and a bottom surface of the protective layer is larger than or equal to 20 degrees and less than or equal to 40 degrees.

21 . The display device of claim 10 , further comprising:
an undercut area along a boundary between the display area and the non-display area, wherein the undercut area includes an undercut structure in which the second portion including a photosensitive resin is disposed.

Assignees

• Lg Display Co Ltd

Inventors

• Kwon Ohnam
• Heo Hunhoe

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• G03F7/039

  Macromolecular compounds which are photodegradable, e.g. positive electron resists (G03F7/075 takes precedence; macromolecular quinonediazides G03F7/023) · CPC title

• G03F7/0043

  Chalcogenides; Silicon, germanium, arsenic or derivatives thereof; Metals, oxides or alloys thereof (G03F7/0044 takes precedence) · CPC title

• H10K59/122 Primary

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