Low-emissivity transparent laminate and building material containing the same

Patent metadata

Field	Value
Publication number	US-9505652-B2
Application number	US-201314653103-A
Country	US
Kind code	B2
Filing date	Aug 21, 2013
Priority date	Dec 24, 2012
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

Provided is a low-emissivity transparent laminate comprising a transparent substrate and a coating layer placed on the transparent substrate, wherein the coating layer has a multilayered structure sequentially comprising a low-emissivity layer, a buffer layer comprising a ZnSe-based composite metal nitride, and a dielectric layer from the transparent substrate.

First claim

The invention claimed is:

1. A low-emissivity transparent laminate comprising:
a transparent substrate; and
a coating layer formed on the transparent substrate, wherein
the coating layer has a multilayer structure comprising:
a lowermost dielectric layer on top of the transparent substrate and having a lower surface in contact with the transparent substrate, the lowermost dielectric layer is a ZnSnO x layer;
a seed layer on top of the transparent substrate, the seed layer comprising an Al-doped Zn-based oxide;
a low-emissivity layer on top of the seed layer;
a first buffer layer on top of the low-emissivity layer, the first buffer layer is a ZnSnN x layer;
an uppermost dielectric layer on top of the first buffer layer, the uppermost dielectric layer is a ZnSnO x layer; and
a second buffer layer on top of the uppermost dielectric layer, the second buffer layer is a ZnSnN x layer.

2. The low-emissivity transparent laminate according to claim 1 , wherein the multilayer structure of the coating layer further comprises a low-emissivity protective metal layer, which is laminated on at least one or both surfaces of the low-emissivity layer.

3. The low-emissivity transparent laminate according to claim 2 , wherein the low-emissivity protective metal layer has an extinction coefficient of 1.5 to 3.5 in a visible light range.

4. The low-emissivity transparent laminate according to claim 2 , wherein the low-emissivity protective metal layer comprises at least one selected from the group consisting of Ni, Cr, alloys of Ni and Cr, Ti, and combinations thereof.

5. The low-emissivity transparent laminate according to claim 2 , wherein the low-emissivity protective metal layer has a thickness of 1 nm to 5 nm.

6. The low-emissivity transparent laminate according to claim 1 , wherein the low-emissivity layer has an emissivity of 0.01 to 0.3.

7. The low-emissivity transparent laminate according to claim 1 , wherein the low-emissivity layer comprises at least one selected from the group consisting of Ag, Au, Cu, Al, Pt, ion-doped metal oxides, and combinations thereof.

8. The low-emissivity transparent laminate according to claim 1 , wherein the low-emissivity layer has a thickness of 6 nm to 25 nm.

9. The low-emissivity transparent laminate according to claim 1 , wherein the first buffer layer comprises a compound represented by ZnSnN x , (where, 1.5≦x≦2.5).

10. The low-emissivity transparent laminate according to claim 1 , wherein the first buffer layer has a thickness of 1 nm to 10 nm.

11. The low-emissivity transparent laminate according to claim 1 , wherein at least one of the uppermost and lowermost dielectric layers has a thickness of 5 nm to 60 nm.

12. The low-emissivity transparent laminate according to claim 1 , wherein the transparent substrate has a visible light transmittance of 90% to 100%.

13. The low-emissivity transparent laminate according to claim 1 , wherein the transparent substrate is a glass or transparent plastic board.

14. The low-emissivity transparent laminate according to claim 1 , wherein the uppermost dielectric layer is in direct contact with each of the first and second buffer layers.

15. The low-emissivity transparent laminate according to claim 1 , wherein the uppermost dielectric layer is in direct contact with each of the first and second buffer layers.

16. A building material comprising the low-emissivity transparent laminate according to claim 1 .

Assignees

• Lg Hausys Ltd

Inventors

• Kim Ung Kil
• Jun Youn Ki
• Kwon Dae Hoon

Classifications

• Y10T428/31678

  Of metal · CPC title

• C03C17/36 Primary

  at least one coating being a metal · CPC title

• C03C17/3626

  one layer at least containing a nitride, oxynitride, boronitride or carbonitride · CPC title

• Y10T428/265

  1 mil or less · CPC title

• C03C17/3644

  the metal being silver · CPC title