Display device and method of manufacturing display device

Patent metadata

Field	Value
Publication number	US-12096668-B2
Application number	US-202318374581-A
Country	US
Kind code	B2
Filing date	Sep 28, 2023
Priority date	Nov 15, 2017
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A display device includes: a first substrate in which a display area and a non-display area disposed outside the display area are defined; a second substrate facing the first substrate; and a cell seal disposed on the non-display area, where the cell seal includes a bonding filament connecting the first substrate and the second substrate to each other.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate in which a display area and a non-display area disposed outside the display area are defined;
a second substrate facing the first substrate;
a cell seal disposed on the non-display area; and
an insulation layer disposed on the non-display area;
wherein the cell seal includes a bonding filament disposed between the first substrate and the second substrate,
wherein materials constituting an upper part of the bonding filament are the same as materials constituting the first substrate, and materials constituting a lower part of the bonding filament are the same as materials constituting the second substrate,
wherein the cell seal surrounds the display area, and
wherein the bonding filament directly contacts the insulating layer, and
wherein the bonding filament completely penetrates the insulation layer.

2. The display device of claim 1 , wherein:
a portion of a side surface of the bonding filament directly contacts the insulating layer.

3. The display device of claim 1 , wherein:
the insulation layer comprises a first insulation layer disposed on the first substrate, a second insulation layer disposed on the first insulation layer and a third insulating layer disposed on the second insulating layer,
the bonding filament completely penetrates the first insulation layer, the second insulation layer and the third insulating layer.

4. The display device of claim 3 , wherein:
at least one of the first insulation layer, the second insulation layer and the third insulating layer is an inorganic insulating layer.

5. The display device of claim 1 , wherein:
the bonding filament comprises an inner bonding filament and an outer bonding filament,
the inner bonding filament is disposed relatively closer to the display area than the outer bonding filament.

6. The display device of claim 5 , wherein:
each of the inner bonding filament and the outer bonding filament completely penetrates the insulation layer.

7. The display device of claim 5 , wherein:
a portion of the insulating layer is disposed between the inner bonding filament and the outer bonding filament.

8. The display device of claim 5 , wherein:
the inner bonding filament and the outer bonding filament partially overlap each other.

9. The display device of claim 8 , wherein:
a refractive index of an overlap area of the inner bonding filament and the outer bonding filament and a refractive index of a peripheral portion of the inner bonding filament are different from each other.

10. The display device of claim 8 , wherein:
a refractive index of an overlap area of the inner bonding filament and the outer bonding filament and a refractive index of a peripheral portion of the outer bonding filament are different from each other.

11. The display device of claim 5 , wherein:
each of the inner bonding filament and the outer bonding filament comprises a central portion and a peripheral portion surrounding the central portion.

12. The display device of claim 11 ,
wherein a refractive index of the central portion is different from a refractive index of the peripheral portion.

13. The display device of claim 5 ,
wherein at least one of the inner bonding filament and the outer bonding filament is inclined at a predetermined inclination angle with respect to a thickness direction of the first substrate.

14. The display device of claim 13 ,
wherein the inner bonding filament and the outer bonding filament intersect each other.

15. The display device of claim 14 ,
wherein an intersection where the inner bonding filament and the outer bonding filament intersect each other overlaps a portion of the insulating layer.

16. The display device of claim 1 , wherein:
the cell seal further includes a frit seal,
the frit seal directly contacts the bonding filament and the insulating layer.

17. The display device of claim 16 ,
wherein the bonding filament and the frit seal form a closed curve in plan view.

18. The display device of claim 16 , wherein:
the insulation layer comprises a first insulation layer disposed on the first substrate, a second insulation layer disposed on the first insulation layer and a third insulating layer disposed on the second insulating layer,
the frit seal directly contacts the third insulating layer, and
the frit seal does not contact the first insulation layer and the second insulation layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Seo Woo Suk
• Ha Sang Woo
• Kim Sung Chul
• Kim Jung Hyun
• Song Si Joon
• Song Jun Ho
• You Bong Hyun

Classifications

• H10K59/8722 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/131 Primary

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

• B23K26/20 Primary

  Bonding (soldering by means of radiant energy B23K1/005) · CPC title

• H10K71/00

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

• H10K50/8426

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title