Substrate for liquid crystal display

• US 20070052670A1
• Filed: 09/06/2006
• Published: 03/08/2007
• Est. Priority Date: 09/06/2005
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hong, Wang-su, Jeon, Hyung-il, Seo, Jong-hyun, Lee, Woo-jae
• Granted Patent: US 7,486,373 B2
• Time in Patent Office: Days
• US Class Current: 345/107
• CPC Class Codes: C09K 2323/05 Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 2201/501 Blocking layers, e.g. against migration of ions

Abstract

Provided is a substrate for a liquid crystal display which is resistant to deformation. The substrate includes a flexible substrate, first and second barrier layers respectively disposed on first and second surfaces of the flexible substrate, and first and second hard coating layers respectively disposed on the first and second barrier layers.

Claims

1. A substrate for a liquid crystal display, the substrate comprising:

a flexible substrate;

first and second barrier layers respectively disposed on first and second surfaces of the flexible substrate, the first and second barrier layers having different thicknesses; and

first and second hard coating layers respectively disposed on the first and second barrier layers.

2. The substrate of claim 1, wherein a thickness ratio of the first barrier layer to the second barrier layer is between about 1:

1.5 and about 1;

3.

3. The substrate of claim 1, wherein the first barrier layer has a thickness of about 50 Å

to about 3,000 Å

.

4. The substrate of claim 1, wherein the second barrier layer has a thickness of about 75 Å

to about 9,000 Å

.

5. The substrate of claim 1, further comprising an adhesive layer between the flexible substrate and each of the first and second barrier layers.

6. The substrate of claim 1, further comprising a thin film transistor array on the first hard coating layer.

7. The substrate of claim 1, wherein each of the first and second barrier layers is one selected from the group consisting of an inorganic oxide layer, a nitride layer, an organic layer, an inorganic layer, and a multi-layered stack comprised of an organic layer and an inorganic layer.

8. The substrate of claim 7, wherein the inorganic oxide layer comprises one selected from the group consisting of SiOx, AlOx, and AlSiOx.

9. The substrate of claim 7, wherein the nitride layer is selected from the group consisting of SiNx and SiNOx.

10. The substrate of claim 7, wherein the organic layer is comprised of a material selected from the group consisting of acrylate and parylene.

11. A substrate for a liquid crystal display, the substrate comprising:

a flexible substrate;

first and second barrier layers respectively disposed on first and second surfaces of the flexible substrate, the first and second barrier layers having different stress strengths; and

first and second hard coating layers respectively disposed on the first and second barrier layers.

12. The substrate of claim 11, further comprising an adhesive layer between the flexible substrate and each of the first and second barrier layers.

13. The substrate of claim 11, further comprising a thin film transistor array on the first hard coating layer.

14. The substrate of claim 11, wherein the first barrier layer has a thickness of about 50 Å

to about 3,000 Å

.

15. The substrate of claim 11, wherein each of the first and second barrier layers is selected from the group consisting of an inorganic oxide layer, a nitride layer, an organic layer, an inorganic layer, and a multi-layered stack comprised of an organic layer and an inorganic layer.

16. The substrate of claim 15, wherein the inorganic oxide layer comprises one selected from the group consisting of SiOx, AlOx, and AlSiOx.

17. The substrate of claim 15, wherein the nitride layer is selected from the group consisting of SiNx and SiNOx.

18. The substrate of claim 15, wherein the organic layer is selected from the group consisting of acrylate and parylene.