SUBSTRATE AND DISPLAY DEVICE INCLUDING THE SAME

• US 20140140015A1
• Filed: 03/14/2013
• Published: 05/22/2014
• Est. Priority Date: 11/19/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Choi, Sang-Jun, Jung, Won-Duk, Nam, Jeong-Lim
• Granted Patent: US 9,099,662 B2
• Time in Patent Office: Days
• US Class Current: 361/748
• CPC Class Codes: H01L 27/1218 with a particular composition or structure of the substrate
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y10T 428/264 Up to 3 mils
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

In an aspect, a substrate for a display device that includes a plastic substrate and a planarization layer is provided.

Claims

1. A substrate for a display device, comprising:

a plastic substrate; and

planarization layer located on one side of the plastic substrate and including a silicon-containing polymer.

2. The substrate for a display device of claim 1, wherein the plastic substrate comprises polyimide.

3. The substrate for a display device of claim 1, wherein the plastic substrate comprises a polyethylene terephthalate (PET) film;

and a polyimide film.

4. The substrate for a display device of claim 3, wherein the polyimide film is about 50 μ

m thick.

5. The substrate for a display device of claim 1, wherein the silicon-containing polymer is made from a compound that provides a thin layer having a Si—

O bond after undergoing heat treatment.

6. The substrate for a display device of claim 5, wherein the silicon-containing polymer comprises polysiloxane, polysilazane, polysilsesquioxane, a derivative thereof, a copolymer thereof, or a combination thereof.

7. The substrate for a display device of claim 1, wherein the silicon-containing polymer has a weight average molecular weight (Mw) of about 2,000 to about 15,000.

8. The substrate for a display device of claim 1, wherein the planarization layer has a thickness of about 1 μ

m to about 10 μ

m.

9. A display device comprising:

substrate for a display device;

a thin film transistor located on the substrate for a display device; and

a pixel electrode that is electrically connected to the thin film transistor;

wherein the substrate for a display device comprises;

a plastic substrate; and

a planarization layer located on one side of the plastic substrate and including a silicon-containing polymer.

10. The display device of claim 9, further comprising:

a common electrode facing the pixel electrode; and

an emission layer located between the pixel electrode and the common electrode.

11. The display device of claim 9, wherein the plastic substrate comprises a polyimide.

12. The display device of claim 11, wherein the plastic substrate comprises a polyethylene terephthalate (PET) film and a polyimide film.

13. The substrate for a display device of claim 12, wherein the polyimide film is about 50 μ

m thick.

14. The display device of claim 9, wherein the silicon-containing polymer compound is made from a compound that provides a thin layer having a Si—

O bond after undergoing heat treatment.

15. The display device of claim 9, wherein the silicon-containing polymer comprises polysiloxane, polysilazane, polysilsesquioxane, a derivative thereof, a copolymer thereof, or a combination thereof.

16. The display device of claim 9, wherein the silicon-containing polymer has a weight average molecular weight (Mw) of about 2,000 to about 15,000.

17. The display device of claim 9, wherein the planarization layer has a thickness of about 1 μ

m to about 10 μ

m.

18. The display device of claim 9, which further comprises a buffer layer located on one side of the planarization layer.