Display device

Patent metadata

Field	Value
Publication number	US-10490759-B2
Application number	US-201916403268-A
Country	US
Kind code	B2
Filing date	May 3, 2019
Priority date	Sep 22, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A display device includes a substrate having a planar area, a bending area extending from the planar area, and a surrounding area extending from the bending area, a first protective layer at a boundary portion of the bending area, and a second protective layer covering an entire surface of the bending area and covering the first protective layer.

First claim

What is claimed is:

1. A display device comprising:
a substrate having a first planar portion, a second planar portion overlapping with the first planar portion in a plan view and a bending portion extending from the first planar portion to the second planar portion;
an organic light emitting diode on the substrate;
a support film on a rear surface of the substrate and supporting the first planar portion;
a first protective layer on a front surface of the substrate and overlapping with an edge of the support film in the plan view; and
a second protective layer covering the first protective layer and the bending portion.

2. The display device as claimed in claim 1 , wherein at least a part of the first protective layer and at least a part of the second protective layer are on the first planar portion.

3. The display device as claimed in claim 1 , wherein at least a part of the second protective layer is on the second planar portion.

4. The display device as claimed in claim 1 , wherein the first protective layer and the second protective layer comprise a photo-curable resin.

5. The display device as claimed in claim 1 , wherein the first protective layer extends along the edge of the support film and has a width of 500 μm to 800 μm.

6. The display device as claimed in claim 1 , wherein the first protective layer has a thickness of 30 μm to 70 μm.

7. The display device as claimed in claim 6 , wherein the first protective layer and the second protective layer have a thickness of 70 μm to 130 μm at an overlap area between the first protective layer and the second protective layer.

8. The display device as claimed in claim 1 , wherein the first protective layer surrounds a center of the bending portion.

9. The display device as claimed in claim 1 , further comprising:
a gate line on the planar portion;
a data line on the planar portion and crossing the gate line; and
a thin film transistor on the planar portion and connected to the gate line and the data line.

10. The display device as claimed in claim 9 , further comprising a driving integrated circuit on the second planar portion, and
the bending portion comprises a signal line connecting the gate line or the data line to the driving integrated circuit.

11. The display device as claimed in claim 1 , wherein the support film comprises a polyethyleneterephthalate (PET) film.

12. The display device as claimed in claim 1 , wherein a peak height of the first protective layer from the substrate is less than a peak height of the second protective layer from the substrate.

13. The display device as claimed in claim 1 , wherein the second protective layer overlaps the first protective layer at a point where the first protective layer has a maximum thickness.

14. The display device as claimed in claim 1 , further comprising:
an auxiliary member between the first and second planar portion; and
an adhesive layer between the first planar portion and the auxiliary member and between the second planar portion and the auxiliary member.

15. The display device as claimed in claim 14 , wherein the first protective layer overlaps with an edge of the auxiliary member in the plan view.

16. The display device as claimed in claim 14 , further comprising a polarizer on the organic light emitting diode,
wherein a distance from a boundary between the first planar portion and the bending portion to the polarizer in the plan view is longer than a distance from the boundary to an edge of the auxiliary member in the plan view.

17. The display device as claimed in claim 14 , wherein the adhesive layer is located between the bending portion and an edge of the auxiliary member and attaches the bending portion to the edge of the auxiliary member.

18. The display device as claimed in claim 17 , wherein the first protective layer overlaps with the adhesive layer located between the bending portion and an edge of the auxiliary member.

19. The display device as claimed in claim 17 , further comprising a polarizer on the organic light emitting diode, and
wherein a distance from a boundary between the first planar portion and the bending portion to the polarizer in the plan view is longer that a maximum distance from the boundary to the adhesive layer located between the bending portion and an edge of the auxiliary member in the plan view.

20. The display device as claimed in claim 1 , further comprising a polarizer on the organic light emitting diode, and
wherein the first protective layer and the second protective layer are spaced from the polarizer.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Hayoung
• Heo Kyeongyeol
• Kim Joonsam
• Hwang Jihong

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L2251/5338

  Electricity · mapped topic

• H01L51/5256

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic