Display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2025335049-A1
Application number	US-202519075873-A
Country	US
Kind code	A1
Filing date	Mar 11, 2025
Priority date	Apr 24, 2024
Publication date	Oct 30, 2025
Grant date	—

Abstract

A display device including a substrate. Pixels are disposed on the substrate. A base layer is disposed on the pixels. A first conductive pattern is disposed on the base layer. A touch insulating layer is disposed on the base layer. The touch insulating layer includes contact holes defined therein. The contact holes overlap portions of the first conductive pattern. Second conductive patterns are disposed on the touch insulating layer. Conductive films are disposed within the contact holes. A first portion of the second conductive patterns are disposed in the contact holes and are electrically connected to the first conductive pattern through the conductive films.

First claim

What is claimed is:

1 . A display device comprising:
a substrate; pixels disposed on the substrate; a base layer disposed on the pixels; a first conductive pattern disposed on the base layer; a touch insulating layer disposed on the base layer, the touch insulating layer including contact holes defined therein, the contact holes overlap portions of the first conductive pattern and exposing the portions of the first conductive pattern; second conductive patterns disposed on the touch insulating layer; and conductive films disposed within the contact holes and contacting the exposed portions of the first conductive pattern, wherein a first portion of the second conductive patterns are disposed in the contact holes and are electrically connected to the first conductive pattern through the conductive films.

2 . The display device of claim 1 , wherein:
the contact holes penetrate the touch insulating layer between the first conductive pattern and a first-second conductive pattern of the second conductive patterns, and between the first conductive pattern and a second-second conductive pattern of the second conductive patterns.

3 . The display device of claim 1 , wherein:
the conductive films include a conductive material formed through a chemical vapor deposition process.

4 . The display device of claim 1 , wherein:
the first portion of the second conductive patterns are spaced apart from the first conductive pattern and the touch insulating layer with the conductive films interposed therebetween.

5 . The display device of claim 1 , wherein:
the conductive films cover inner surfaces of the contact holes.

6 . The display device of claim 1 , wherein
each of the conductive films directly contacts a first conductive pattern of the first conductive patterns and a second conductive pattern of the second conductive patterns.

7 . The display device of claim 1 , wherein:
each of the second conductive patterns includes: a (2-1)-th conductive pattern disposed directly on the touch insulating layer; and a (2-2)-th conductive pattern disposed inside one of the contact holes and directly connected to the (2-1)-th conductive pattern, the (2-2)-th conductive pattern is the first portion of the second conductive patterns.

8 . The display device of claim 7 , wherein:
the (2-2)-th conductive pattern is surrounded by the conductive films except for a first surface directly connected to the (2-1)-th conductive pattern.

9 . The display device of claim 1 , wherein:
the contact holes have an aspect ratio greater than or equal to 1.

10 . The display device of claim 1 , wherein:
the touch insulating layer includes an organic insulating material.

11 . The display device of claim 1 , wherein:
a thin film encapsulation layer is disposed on the pixels, the thin film encapsulation layer including at least one organic film and at least one inorganic film.

12 . The display device of claim 11 , wherein the base layer is disposed on the thin film encapsulation layer.

13 . The display device of claim 11 , wherein the base layer comprises an uppermost layer of the thin film encapsulation layer.

14 . A manufacturing method of a display device, comprising:
providing a substrate; forming pixels on the substrate; providing a base layer on the pixels; forming a first conductive pattern on the base layer; forming a touch insulating layer, the touch insulating layer including contact holes overlapping portions of the first conductive pattern on the base layer, the contact holes exposing the portions of the first conductive pattern; forming conductive films within the contact holes and contacting the exposed portions of the first conductive pattern; and forming second conductive patterns on the touch insulating layer, wherein a first portion of the second conductive patterns are disposed in the contact holes and are formed to be electrically connected to the first conductive pattern through the conductive films.

15 . The manufacturing method of the display device of claim 14 , wherein:
the conductive films include a conductive material formed through a chemical vapor deposition process.

16 . The manufacturing method of the display device of claim 14 , wherein:
the conductive films cover inner surfaces of the contact holes.

17 . The manufacturing method of the display device of claim 14 , wherein:
each of the conductive films directly contact a first conductive pattern of the first conductive patterns and a second conductive pattern of the second conductive patterns.

18 . The manufacturing method of the display device of claim 14 , wherein:
the contact holes have an aspect ratio greater than or equal to 1.

19 . The manufacturing method of claim 14 , further comprising:
forming a thin film encapsulation layer on the pixels, the thin film encapsulation layer including at least one organic film and at least one inorganic film.

20 . The manufacturing method of claim 19 , wherein the base layer is disposed on the thin film encapsulation layer or is an uppermost layer of the thin film encapsulation layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Chung Yung Bin
• Lee Sang Wook
• Lim In Seok

Classifications

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G09G2320/0223

  Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes · CPC title

• H10K71/60

  Forming conductive regions or layers, e.g. electrodes · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title