Mirror having reflective layer of or including silicon aluminum

• US 9,151,880 B2
• Filed: 02/19/2013
• Issued: 10/06/2015
• Est. Priority Date: 02/19/2013
• Status: Active Grant

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian do Brasil Vidros Planos Ltda. (Interguard Holding Corp.), Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: Kreling, Afonso, Ramos Torres, Fabiola, Baillo Abreu, Juan, Den Boer, Willem, Krasnov, Alexey
• Primary Examiner(s): CHERRY, EUNCHA P
• Application Number:
  US13/770,262
• Publication Number:
  US 20140233120A1
• Time in Patent Office: 959 Days
• Field of Search: 359/849, 359/838, 359/839, 359/871, 359/604, 359/883, 359/884
• US Class Current: 1/1
• CPC Class Codes: G02B 5/0858 the reflecting layers comprising a single metallic layer with one or more dielectric layers
• CPC Class Codes: G02B 5/0866 incorporating one or more organic, e.g. polymeric layers

Abstract

Embodiments relate to mirrors having a reflective layer of or including silicon aluminum (e.g., SiAl). The mirrors may be first surface mirrors, or second surface mirrors. The SiAl layer may be provided between dielectric layers. The mirrors may be flat or bent in different instances, and may or may not be heat treated. In certain example instances, such mirrors may be used in interior residential, commercial, appliance, and/or other applications.

Claims

1. A mirror, comprising:

a glass substrate;

a metallic or substantially metallic reflective layer comprising silicon aluminum provided on the glass substrate;

the metallic or substantially metallic reflective layer comprising silicon aluminum being located between at least first second dielectric layers, and wherein the first dielectric layer is located between at least the glass substrate and the metallic or substantially metallic reflective layer comprising silicon aluminum;

wherein the layer comprising silicon aluminum comprises, on a weight basis, more silicon than aluminum; and

a protective layer comprising zirconium oxide on the glass substrate over the reflective layer and over the first and second dielectric layers.

2. The mirror of claim 1, wherein the layer comprising silicon aluminum consists essentially of silicon aluminum.

3. The mirror of claim 1, wherein the layer comprising silicon aluminum comprises, on a weight basis, from 75-99% silicon and from 1-25% aluminum.

4. The mirror of claim 1, wherein the layer comprising silicon aluminum comprises, on a weight basis, from 85-98% silicon and from 2-15% aluminum.

5. The mirror of claim 1, wherein the metallic or substantially metallic reflective layer comprising silicon aluminum directly contacts each of the first and second dielectric layers.

6. The mirror of claim 1, wherein the layer comprising silicon aluminum is from 100-500 Å

thick.

7. The mirror of claim 1, wherein the layer comprising silicon aluminum is from 130-300 Å

thick.

8. The mirror of claim 1, wherein the mirror has a visible transmission of from about 5-36%.

9. The mirror of claim 1, wherein the mirror has a visible transmission of from about 10-34%.

10. The mirror of claim 1, wherein the mirror has a glass side visible reflectance of from about 42-55%.

11. The mirror of claim 1, wherein the mirror has a film side visible reflectance of from about 48-65%.

12. The mirror of claim 1, wherein the layer comprising silicon aluminum is a sputter-deposited layer.

13. The mirror of claim 1, wherein the first dielectric layer comprises silicon nitride.

14. The mirror of claim 1, wherein the second dielectric layer comprises silicon nitride.

15. The mirror of claim 1, wherein the second dielectric layer is located between and directly contacting the layer comprising zirconium oxide and the layer comprising silicon aluminum.

16. The mirror of claim 1, further comprising a polymer inclusive film, the second dielectric layer being located between at least the layer comprising silicon aluminum and the polymer inclusive film.

17. The mirror of claim 1, wherein the mirror is a first surface mirror.

18. The mirror of claim 1, wherein the mirror is a second surface mirror.

19. The mirror of claim 1, wherein the first dielectric layer and/or the second dielectric layer comprises silicon oxynitride.

20. The mirror of claim 1, wherein the first dielectric layer and/or the second dielectric layer comprises silicon oxide.