Display device and manufacturing method for the same

Patent metadata

Field	Value
Publication number	US-2025040067-A1
Application number	US-202418735840-A
Country	US
Kind code	A1
Filing date	Jun 6, 2024
Priority date	Jul 28, 2023
Publication date	Jan 30, 2025
Grant date	—

Abstract

A display device includes a display panel having a first non-folding region, a folding region, and a second non-folding region consecutively arranged in a first direction. The folding region is adjacent to the first and second non-folding regions and is foldable about a folding axis. A lower substrate is disposed under the display panel. The lower substrate includes a spacing portion and a pattern portion. The spacing portion overlaps the folding region on a plane. The pattern portion is spaced apart from the display panel by the spacing portion in a thickness direction of the display device. The pattern portion includes a plurality of holes.

First claim

What is claimed is:

1 . A display device comprising:
a display panel having a first non-folding region, a folding region, and a second non-folding region arranged in a first direction, wherein the folding region is adjacent to the first and second non-folding regions and is foldable about a folding axis; and a lower substrate disposed under the display panel, wherein the lower substrate includes a spacing portion and a pattern portion, the spacing portion overlaps the folding region on a plane, and the pattern portion is spaced apart from the display panel by the spacing portion in a thickness direction of the display device, the pattern portion including a plurality of holes.

2 . The display device of claim 1 , wherein a width of the pattern portion in the first direction increases as a distance from the display panel increases in the thickness direction of the display device.

3 . The display device of claim 1 , wherein the lower substrate includes a first region overlapping the first non-folding region, a second region overlapping the second non-folding region, and a third region overlapping the folding region, the third region including the spacing portion and the pattern portion, and wherein the first region, the second region, and the third region include a same material as each other.

4 . The display device of claim 1 , wherein the lower substrate is a glass substrate.

5 . The display device of claim 1 , wherein the spacing portion has a height that is less than or equal to one-third of a thickness of the lower substrate.

6 . The display device of claim 1 , wherein the spacing portion has a height in a range of about 10 micrometers to about 100 micrometers.

7 . The display device of claim 1 , wherein the spacing portion has a greater width in the first direction than a width of the folding region in the first direction.

8 . The display device of claim 1 , wherein the spacing portion has a greater width in the first direction than a width of the pattern portion in the first direction.

9 . The display device of claim 1 , further comprising a resin material filling the spacing portion.

10 . The display device of claim 1 , wherein:
the plurality of holes extends in a second direction crossing the first direction, the plurality of holes including a first hole group and a second hole group spaced apart from each other in the first direction; and the first hole group and the second hole group are staggered with respect to each other.

11 . A method for manufacturing a display device, the method comprising:
preparing a preliminary lower substrate including a first region, a second region spaced apart from the first region in a first direction, and a third region defined between the first region and the second region; applying a first laser along a boundary of the third region; applying a second laser between portions that the first laser is applied; forming a display panel on the preliminary lower substrate; and forming a spacing portion and a pattern portion by etching the preliminary lower substrate, wherein the pattern portion is spaced apart from the display panel by the spacing portion in a thickness direction of the display device, the pattern portion including a plurality of holes.

12 . The method of claim 11 , further comprising placing an etching protection film on the display panel.

13 . The method of claim 11 , further comprising filling the spacing portion with a resin material.

14 . The method of claim 11 , wherein the second laser has a higher intensity than an intensity of the first laser.

15 . The method of claim 11 , wherein the applying of the first laser includes focusing the first laser on an upper portion of the preliminary lower substrate and etching a portion of the preliminary lower substrate.

16 . The method of claim 11 , wherein the applying of the first laser includes focusing the first laser on a middle portion of the preliminary lower substrate and etching a portion of the preliminary lower substrate.

17 . The method of claim 11 , wherein the applying of the second laser includes focusing the second laser on an upper portion of the preliminary lower substrate and etching a portion of the preliminary lower substrate.

18 . The method of claim 11 , wherein the applying of the second laser includes focusing the second laser on a middle portion of the preliminary lower substrate and etching a portion of the preliminary lower substrate.

19 . The method of claim 11 , wherein the applying of the second laser includes focusing the second laser on a lower portion of the preliminary lower substrate and etching a portion of the preliminary lower substrate.

20 . The method of claim 11 , wherein the applying of the second laser includes focusing the second laser on an upper portion, a middle portion, and a lower portion of the preliminary lower substrate and etching a portion of the preliminary lower substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Min-Hoon
• Kim Sunghyun
• Kim Seungho
• Park Cheolmin
• Seo Eunwon
• Jang Jin-Won
• Hwang Seongjin

Classifications

• G09F9/335

  being organic light emitting diodes [OLED] · CPC title

• G09F9/33

  being semiconductor devices, e.g. diodes · CPC title

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• H10K71/421

  using coherent electromagnetic radiation, e.g. laser annealing · CPC title

• H10K71/00

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