Flexible display device

Patent metadata

Field	Value
Publication number	US-10504971-B2
Application number	US-201615285270-A
Country	US
Kind code	B2
Filing date	Oct 4, 2016
Priority date	Mar 25, 2016
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A flexible display device includes a display panel layer, a touch sensing layer, a reflection prevention layer, and a window layer. The touch sensing layer is disposed directly on a first display panel surface, a second display panel surface facing the first display panel surface in a thickness direction, or a second base surface of the reflection prevention layer. The reflection prevention layer is disposed directly on the second display panel surface or a first base surface of the touch sensing layer. The window layer is disposed directly on the first base surface or the second base surface.

First claim

What is claimed is:

1. A flexible display device comprising:
a display panel layer comprising:
a display area comprising a plurality of light emitting areas and a non-light emitting area adjacent to the plurality of light emitting areas; and
a non-display area adjacent to the display area, the display panel layer forming a first display panel surface and a second display panel surface facing the first display panel surface in a thickness direction;

a touch sensing layer forming a first base surface;
a reflection prevention layer forming a second base surface; and
a window layer forming an outer surface,
wherein:
the touch sensing layer is disposed directly on one of the first display panel surface, the second display panel surface, and the second base surface;
the reflection prevention layer is disposed directly on the second display panel surface or the first base surface; and
the window layer is disposed directly on the first base surface or the second base surface.

2. The flexible display device of claim 1 , wherein the reflection prevention layer comprises:
a black matrix disposed directly on the second display panel surface or the first base surface; and
a plurality of color filters overlapping with the plurality of light emitting areas, respectively.

3. The flexible display device of claim 2 , wherein:
the black matrix comprises:
a light shield portion overlapping with the non-light emitting area; and

a bezel portion overlapping with the non-display area,

the bezel portion is thicker than the light shield portion.

4. The flexible display device of claim 3 , wherein the light shield portion and the bezel portion are integrated with each other.

5. The flexible display device of claim 3 , wherein:
the bezel portion comprises a plurality of layers; and
the lowermost layer of the plurality of layers is integrated with the light shield portion.

6. The flexible display device of claim 5 , wherein:
the plurality of layers comprises an uppermost layer; and
the uppermost layer comprises an optical layer configured to reduce light reflection.

7. The flexible display device of claim 3 , wherein at least one of the light shield portion and the bezel portion comprises an inclined side surface when viewed in a cross-sectional view.

8. The flexible display device of claim 3 , wherein the window layer comprises a window protection layer disposed directly on the second base surface.

9. The flexible display device of claim 8 , wherein:
in the display area, the first base surface and a surface of the window protection layer are separated by a first distance in the thickness direction;
in the non-display area, the first base surface and the surface of the window protection layer are separated by a second distance in the thickness direction, the second distance being greater than the first distance; and
the surface of the window protection layer is completely spaced apart from the first base surface.

10. The flexible display device of claim 8 , further comprising:
a hard coating layer disposed on the window protection layer.

11. The flexible display device of claim 1 , wherein:
the reflection prevention layer comprises:
a plurality of metal-containing layers overlapping with the display area and the non-display area; and
a plurality of dielectric layers overlapping with the display area and the non-display area; and

the plurality of dielectric layers are alternately stacked with the plurality of metal-containing layers.

12. The flexible display device of claim 11 , wherein the reflection prevention layer further comprises a black matrix overlapping with the non-light emitting area and the non-display area.

13. The flexible display device of claim 1 , further comprising:
an external protection layer disposed directly on the first display panel surface or another surface of the touch sensing layer opposing the first base surface in the thickness direction.

14. The flexible display device of claim 13 , wherein the display panel layer comprises:
a base layer forming the first display panel surface;
a circuit layer disposed on the base layer;
an organic light emitting device layer disposed on the circuit layer; and
a thin film encapsulation layer configured to encapsulate the organic light emitting device layer, the thin film encapsulation layer forming the second display panel surface.

15. The flexible display device of claim 14 , wherein a thickness of the external protection layer is thicker than a thickness of the base layer.

16. The flexible display device of claim 1 , wherein the touch sensing layer comprises:
first conductive patterns overlapping with the non-light emitting area, the first conductive patterns being disposed directly on one of the first display panel surface, the second display panel surface, and the second base surface;
a first touch insulation layer covering the first conductive patterns;
second conductive patterns disposed on the first touch insulation layer, the second conductive patterns overlapping with the non-light emitting area; and
a second touch insulation layer disposed on the first touch insulation layer and covering the second conductive patterns, the second touch insulation layer comprising the first base surface.

17. The flexible display device of claim 16 , wherein:
the plurality of first conductive patterns forms a first mesh shape, the first mesh shape comprising a plurality of first openings corresponding to some of the plurality of light emitting areas; and
the plurality of second conductive patterns forms a second mesh shape, the second mesh shape comprising a plurality of second openings corresponding to some of the plurality of light emitting areas.

18. A flexible display device comprising:
a display panel layer comprising:
a display area comprising a plurality of light emitting areas and a non-light emitting area adjacent to the plurality of light emitting areas; and
a non-display area adjacent to the display area, the display panel layer forming a first display panel surface and a second display panel surface facing the first display panel surface in a thickness direction;

a touch sensing layer forming a first base surface; and
a window layer forming an outer surface,
wherein the touch sensing layer is disposed directly on the second display panel surface,
wherein the window layer is disposed directly on the first base surface,
wherein the touch sensing layer comprises:
a plurality of first conductive patterns overlapping with the non-light emitting area, the plurality of first conductive patterns being disposed directly on the second display panel surface;
a plurality of second conductive patterns overlapping with the non-light emitting area; and
a touch insulation layer configured to insulate the first conductive patterns from the second conductive patterns, and

wherein the touch insulation layer comprises:
a black matrix overlapping with the non-light emitting area and the non-display area; and
a plurality of color filters respectively overlapping with the plurality of light emitting areas.

19. A flexible display device comprising:
a display panel layer comprising:
a display area comprising a plurality of light emitting areas and a non-light emitting area adjacent to the plurality of light emitting areas; and
a non-display area adjacent to the display area, the display panel layer forming a first display panel surface and a second display panel surface facing the first display panel surface in a thickn

Assignees

• Samsung Display Co Ltd

Inventors

• Yang Taehoon
• Lee Yongsu
• Kim Sungchul
• Kim Sunghoon
• Yun Sungsik
• Lee Kyoungah

Classifications

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title