Flexible display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10109811-B2
Application number	US-201715795117-A
Country	US
Kind code	B2
Filing date	Oct 26, 2017
Priority date	Jun 10, 2015
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A flexible display and a method of manufacturing the same are disclosed. In one aspect, the method includes forming a sacrificial layer on a support substrate, wherein the sacrificial layer includes a plurality of patterns continuously formed thereon and a plurality of grooves formed between the patterns. The method also includes forming a display unit on the sacrificial layer, dissolving and removing the sacrificial layer with water and separating the display unit from the support substrate.

First claim

What is claimed is:

1. A method of manufacturing a flexible display, the method comprising:
forming a sacrificial layer on a support substrate, wherein the sacrificial layer includes a plurality of patterns continuously formed thereon and a plurality of grooves formed between the patterns, and wherein the sacrificial layer comprises molybdenum and oxygen;
forming a display unit on the sacrificial layer;
dissolving and removing the sacrificial layer with water; and
separating the display unit from the support substrate.

2. The method of claim 1 , wherein each of the patterns has a shape of a polygon, a circle, or an ellipse.

3. The method of claim 1 , wherein the forming of the display unit comprises:
forming on the sacrificial layer a barrier layer including an inorganic compound;
forming a semiconductor layer on the barrier layer; and
forming a light-emitting device to be electrically connected to the semiconductor layer.

4. The method of claim 3 , wherein at least a portion of the barrier layer contacts the support substrate through the grooves formed in the sacrificial layer.

5. The method of claim 3 , wherein the separating comprises separating the barrier layer from the support substrate.

6. The method of claim 5 , wherein the sacrificial layer comprises an upper surface contacting the barrier layer and a lower surface contacting the support substrate, wherein the barrier layer comprises a first surface contacting the sacrificial layer and a second surface disposed opposite to the first surface, and wherein the first surface of the barrier layer separated from the support substrate corresponds to the upper surface of the sacrificial layer.

7. The method of claim 6 , wherein the first surface of the barrier layer comprises a plurality of protrusion portions and a plurality of recess portions, which are continuously formed thereon.

8. The method of claim 7 , further comprising:
attaching a protection film to the first surface of the barrier layer after the separating.

9. The method of claim 8 , wherein the protrusion portions contact the protection film.

10. The method of claim 9 , wherein a separation space is formed in the recess portions between the first surface of the barrier layer and the protection film.

11. The method of claim 8 , wherein a residual of the sacrificial layer exists in the recess portions of the barrier layer.

12. The method of claim 1 , wherein the dissolving and removing comprises dipping the sacrificial layer into a water tank filled with water.

13. The method of claim 1 , wherein dissolving and removing the sacrificial layer with water comprises at least a portion of the sacrificial layer remaining on one side of the display unit.

14. A method of manufacturing a flexible display, the method comprising:
forming a sacrificial layer on a support substrate, wherein the sacrificial layer includes a plurality of protrusions and a plurality of grooves formed between the protrusions, and wherein the sacrificial layer comprises molybdenum and oxygen;
forming a display unit on the sacrificial layer;
removing the sacrificial layer with water; and
separating the display unit from the support substrate.

15. The method of claim 14 , wherein each of the protrusions has a shape of a polygon, a circle, or an ellipse.

16. The method of claim 14 , wherein the removing comprises dissolving the sacrificial layer with water.

17. The method of claim 14 , wherein the removing comprises dipping the sacrificial layer into a water tank filled with water.

18. The method of claim 14 , wherein dissolving and removing the sacrificial layer with water comprises at least a portion of the sacrificial layer remaining on one side of the display unit.

Assignees

• Samsung Display Co Ltd

Inventors

• Seo Taean
• Kim Kihyun
• Choi Jinhwan

Classifications

• H01L51/0097 Primary

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L51/003

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic

• H10K59/873

  Encapsulations · CPC title