Display apparatus

Patent metadata

Field	Value
Publication number	US-2025212655-A1
Application number	US-202418792247-A
Country	US
Kind code	A1
Filing date	Aug 1, 2024
Priority date	Dec 22, 2023
Publication date	Jun 26, 2025
Grant date	—

Abstract

A display apparatus may include a display panel, a cover layer disposed on the display panel, a film layer disposed on the cover layer, a coating layer disposed on the film layer, a transparent adhesive layer between the display panel and the cover layer, and a transparent resin layer disposed between the cover layer and the film layer. A thickness of the transparent resin layer may be different from a thickness of the transparent adhesive layer.

First claim

1 . A display apparatus, comprising:
a display panel; a cover layer disposed on the display panel; a film layer disposed on the cover layer; a transparent adhesive layer disposed between the display panel and the cover layer; and a transparent resin layer disposed between the cover layer and the film layer, wherein a thickness of the transparent resin layer is different from a thickness of the transparent adhesive layer.

2 . The display apparatus of claim 1 , wherein the thickness of the transparent resin layer is 10 μm or less.

3 . The display apparatus of claim 2 , wherein a thickness of the film layer is 30 times or less the thickness of the transparent resin layer.

4 . The display apparatus of claim 1 , wherein a storage modulus of the transparent resin layer is different from a storage modulus of the transparent adhesive layer.

5 . The display apparatus of claim 4 , wherein the storage modulus of the transparent resin layer is in a range of 50 kPa to 500 kPa, and
wherein the storage modulus of the transparent adhesive layer is in a range of 1 kPa to 100 kPa.

6 . The display apparatus of claim 4 , wherein a storage modulus of the film layer is greater than the storage modulus of the transparent adhesive layer, and
wherein the storage modulus of the film layer is in a range of 2 kPa to 8 kPa.

7 . The display apparatus of claim 1 , wherein a bonding strength between the transparent resin layer and the cover layer is in a range of 0.5 kgf/inch to 1.1 kgf/inch, and
wherein a bonding strength between the transparent resin layer and the film layer is in a range of 0.6 kgf/inch to 1.0 kgf/inch.

8 . A method of manufacturing a display apparatus, comprising:
obtaining a display panel; disposing a cover layer on the display panel; disposing a film layer on the cover layer; disposing a transparent adhesive layer between the display panel and the cover layer; and disposing a transparent resin layer between the cover layer and the film layer, including forming the transparent resin layer by inkjet printing a transparent resin material on the cover layer.

9 . The method of claim 8 , wherein disposing the transparent resin material includes spraying the transparent resin material onto the cover layer through a hole of a head of an inkjet printing device, and spraying a volume of the transparent resin material from the hole in a range of 8 pL to 15 pL.

10 . The method of claim 8 , wherein disposing the transparent resin layer includes the transparent resin material having a viscosity in a range of 7 cps to 18 cps at 25° C. to 45° C.

11 . The method of claim 8 , wherein disposing the transparent resin layer includes applying the transparent resin material on the cover layer and curing the transparent resin material at a first instance to form a primarily cured transparent resin material, and
wherein disposing the film layer includes disposing the film layer on the primarily cured transparent rein material.

12 . The method of claim 11 , wherein curing the transparent resin material at the first instance includes curing the transparent resin material at a curing rate in a range of 70% to 85%, the method further comprising, after disposing the film layer on the primarily cured transparent resin material:
curing the primarily cured transparent resin material at a second instance to form the transparent resin layer.

13 . A display apparatus, comprising:
a display panel including a folding area, a first non-folding area on a first side of the folding area, and a second non-folding area on a second side of the folding area, wherein the second side is different from the first side of the folding area; a cover layer disposed on the display panel; a film layer disposed on the cover layer; a transparent adhesive layer disposed between the display panel and the cover layer; and a transparent resin layer disposed between the cover layer and the film layer, wherein a storage modulus of the transparent resin layer is different from a storage modulus of the transparent adhesive layer.

14 . The display apparatus of claim 13 , wherein the storage modulus of the transparent resin layer is in a range of 50 kPa to 500 kPa, and
wherein the storage modulus of the transparent adhesive layer is in a range of 1 kPa to 100 kPa.

15 . The display apparatus of claim 13 , wherein a storage modulus of the film layer is greater than the storage modulus of the transparent adhesive layer, and wherein the storage modulus of the film layer is in a range of 2 GPa to 8 GPa.

16 . The display apparatus of claim 13 , wherein a thickness of the transparent resin layer is 10 μm or less.

17 . The display apparatus of claim 14 , wherein a thickness of the film layer is 30 times or less the thickness of the transparent resin layer.

18 . The display apparatus of claim 13 , wherein a bonding strength between the transparent resin layer and the cover layer is in a range of 0.5 kgf/inch to 1.1 kgf/inch, and a bonding strength between the transparent resin layer and the film layer is in a range of 0.6 kgf/inch to 1.0 kgf/inch.

19 . A display apparatus, comprising:
a display panel; a transparent adhesive layer on the display panel; a cover layer having a glass material on the transparent adhesive layer; a transparent resin layer on the cover layer; and a film layer having a polymer organic material on the cover layer.

20 . The display apparatus of claim 19 , wherein the glass material comprises quartz.

21 . The display apparatus of claim 19 , wherein the glass material has a heat resistance of 100° C. or more.

22 . The display apparatus of claim 19 , wherein the glass material has a coefficient of thermal expansion of 80×10 −6 /K or less.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Giyoun
• Lee Jungwoo

Classifications

• H10K2102/351

  Thickness · CPC title

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• G09F9/301

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

• H10K77/111 Primary

  Flexible substrates · CPC title

• H10K59/872 Primary

  Containers · CPC title