Display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-12455591-B2
Application number	US-202318125207-A
Country	US
Kind code	B2
Filing date	Mar 23, 2023
Priority date	Jun 2, 2022
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A method of manufacturing a display device, includes providing a preliminary display device including a display panel, a panel protective film disposed under the display panel, and protective films disposed under the panel protective film and on the display panel, irradiating a first laser beam to the preliminary display device from an upper or lower side of the preliminary display device to form a curved portion at a corner of the preliminary display device, irradiating a second laser beam to the preliminary display device in which the curved portion is formed to form a pattern portion in at least one protective film of the protective films in a direction in which the first laser beam is irradiated, and removing the at least one protective film in which the pattern portion is formed.

First claim

What is claimed is:

1. A method of manufacturing a display device, comprising:
providing a preliminary display device comprising a display panel, a panel protective film disposed under the display panel, and protective films disposed under the panel protective film and on the display panel;
irradiating a first laser beam to the preliminary display device from an upper or lower side of the preliminary display device to form a curved portion at a corner of the preliminary display device;
irradiating a second laser beam to the preliminary display device in which the curved portion is formed to form a pattern portion in at least one protective film of the protective films in a direction in which the first laser beam is irradiated; and
removing the at least one protective film in which the pattern portion is formed.

2. The method of claim 1 , wherein the pattern portion comprises:
a plurality of protruding portions each comprising an edge corresponding to an edge of the curved portion; and
a plurality of openings defined between the plurality of protruding portions.

3. The method of claim 2 , wherein a portion of each of the plurality of protruding portions, which is adjacent to a corresponding opening, has a radius of curvature smaller than a radius of curvature of the curved portion in plan view.

4. The method of claim 2 , wherein each of the plurality of openings has a concave shape recessed to a direction away from the corner in plan view.

5. The method of claim 1 , wherein
the irradiating of the first laser beam comprises irradiating the first laser beam to the at least one protective film, which is adjacent to the panel protective film, and
the irradiating of the second laser beam comprises substantially simultaneously patterning the panel protective film and the at least one protective film disposed on the panel protective film.

6. The method of claim 5 , wherein the patterned panel protective film comprises:
a plurality of panel protruding portions; and
a plurality of concave portions defined between the plurality of panel protruding portions.

7. The method of claim 6 , wherein each of the concave portions has a concave shape recessed to a direction away from the corner in plan view.

8. The method of claim 1 , wherein the at least one protective film comprises a protective layer and an adhesive layer disposed between the display panel and the protective layer.

9. The method of claim 1 , wherein the display device comprises:
a folding area folded with respect to a folding axis extending in a direction;
a first non-folding area; and
a second non-folding area spaced apart from the first non-folding area with the folding area interposed therebetween.

10. A method of manufacturing a display device, comprising:
providing a preliminary display device comprising a first protective film, a panel protective film disposed on the first protective film, a display panel disposed on the panel protective film, and a second protective film disposed on the display panel;
irradiating a first laser beam toward the display panel from an upper side of the second protective film to form a curved portion at a corner of the preliminary display device;
irradiating a second laser beam toward the display panel from the upper side of the second protective film to form a pattern portion adjacent to an edge of the curved portion of the second protective film; and
removing the second protective film in which the pattern portion is formed.

11. The method of claim 10 , wherein the pattern portion comprises:
a plurality of protruding portions each comprising an edge corresponding to an edge of the curved portion; and
a plurality of openings defined between the plurality of protruding portions.

12. The method of claim 11 , wherein each of the plurality of protruding portions comprises a part having a radius of curvature smaller than a radius of curvature of the curved portion.

13. The method of claim 11 , wherein each of the plurality of openings has a concave shape recessed to a direction away from the corner in plan view.

14. The method of claim 10 , wherein
the first protective film comprises a first protective layer and a first adhesive layer disposed between the display panel and the first protective layer, and
the second protective film comprises a second protective layer and a second adhesive layer disposed between the second protective layer and the panel protective film.

15. The method of claim 10 , wherein
the irradiating of the first laser beam comprises entirely cutting the preliminary display device in a thickness direction, and
the irradiating of the second laser beam comprises cutting the second protective film in the thickness direction.

16. The method of claim 10 , wherein the irradiating of the second laser beam comprises substantially simultaneously patterning the second protective film and the panel protective film.

17. A display device comprising:
a display panel and a panel protective film disposed under the display panel, the display panel and panel protective film including a plurality of curved portions disposed at a plurality of corners, wherein
the panel protective film comprised a plurality of panel pattern portions adjacent to an edge of at least one curved portion among the plurality of curved portions,
the plurality of panel pattern portions comprise:
a plurality of panel protruding portions; and
a plurality of concave portions defined between the plurality of panel protruding portions, and

each of the plurality of panel protruding portions comprises a part with a radius of curvature smaller than a radius of curvature of the curved portion, and
an edge of each of the plurality of panel protruding portions corresponds to an edge of the display panel.

18. The display device of claim 17 , wherein plurality of panel protruding portions, which are adjacent to the plurality of concave portions, have a same radius of curvature.

19. The display device of claim 17 , wherein
the edge of each of the plurality of panel protruding portions corresponds to the part of the plurality of panel protruding portions with a radius of curvature smaller than a radius of curvature of the curved portion, and
each of the plurality of concave portions extend to the edge of the curved portion.

20. The display device of claim 17 , wherein each of the plurality of concave portions has a concave shape recessed to a direction away from a corner in plan view.

21. The display device of claim 17 , further comprising:
a folding area folded with respect to a folding axis that is an imaginary line extending in a direction;
a first non-folding area; and
a second non-folding area spaced apart from the first non-folding area with the folding area interposed therebetween.

22. The display device of claim 17 , wherein each of the plurality of panel protruding portions comprises a part being adjacent to a concave portion and having a radius of curvature smaller than a radius of curvature of the at least one curved portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Lim Sungwook
• Kim Jinhwan
• Cho Yewon
• Hwang Sungtae

Classifications

• B32B3/30

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• B32B3/14

  characterised by a face layer formed of separate pieces of material {which are juxtaposed side-by-side (B32B5/02 takes precedence)} · CPC title

• B32B3/02

  characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)} · CPC title

• G06F1/1656

  Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203) · CPC title

• H04M1/0222

  Foldable in two directions, i.e. using a two degree of freedom hinge · CPC title