Lamination of electrochromic device to glass substrates

Patent metadata

Field	Value
Publication number	US-11890835-B2
Application number	US-202117557627-A
Country	US
Kind code	B2
Filing date	Dec 21, 2021
Priority date	Mar 5, 2010
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

Electrochromic device laminates and their method of manufacture are disclosed.

First claim

The invention claimed is:

1. A laminate electrochromic device, comprising:
a glass pane;
a substrate, wherein the substrate is annealed glass;
an electrochromic device, wherein the electrochromic device is on the substrate, wherein the substrate is laminated on the glass pane, wherein the substrate comprises a coefficient of thermal expansion that is different from a coefficient of thermal expansion of the corresponding glass pane, and wherein the electrochromic device has an edge strength of at least 60 MPa.

2. The laminate of claim 1 , wherein each of said individual electrochromic device has an edge strength of at least 69 MPa.

3. The laminate of claim 1 , wherein the electrochromic device has an edge strength of at least 75 MPa.

4. The laminate of claim 1 , wherein the electrochromic device has an edge strength of at least 100 MPa.

5. The laminate of claim 1 , further comprising an interlayer disposed between the electrochromic substrate and its corresponding glass pane.

6. The laminate of claim 5 , wherein the interlayer comprises a polyvinylbutyral, an ionomeric material, an ethylenevinyl acetate, a polyurethane, or a mixture thereof.

7. The laminate of claim 1 , wherein the electrochromic device is smaller than its corresponding glass pane in at least one dimension.

8. The laminate of claim 7 , wherein the electrochromic device is indented about 0.5 mm to about 3 mm relative to the its corresponding glass pane in at least one dimension.

9. The laminate of claim 7 , wherein the electrochromic devices is indented about 1 mm to about 2 mm relative to said outer laminate glass pane in at least one dimension.

10. The laminate of claim 1 , wherein the electrochromic device is about the same size as said outer laminate glass pane.

11. The laminate of claim 1 , wherein the electrochromic glass substrate is a different material than the outer laminate glass pane.

12. The laminate of claim 1 , wherein a material for the electrochromic glass substrate is selected from the group consisting of low coefficient of thermal expansion glass, soda-lime float glass, aluminosilicate glass, borofloat glass, boroaluminosilicate glass, low sodium-containing glass, or a polymer.

13. A laminate electrochromic device, comprising:
a glass pane;
a substrate, wherein the substrate is annealed glass;
an electrochromic device, wherein the electrochromic device is on the substrate, wherein the substrate is laminated on the glass pane, wherein the substrate comprises a coefficient of thermal expansion that is different from a coefficient of thermal expansion of the corresponding glass pane, wherein the electrochromic device has an edge strength of at least 60 MPa, and wherein the electrochromic glass substrate has a coefficient of thermal expansion ranging from about 2 ppm/K to about 10 ppm/K.

14. The laminate of claim 13 , wherein the electrochromic glass substrate has a thickness ranging from about 0.7 mm to about 6 mm.

15. The laminate of claim 13 , wherein the electrochromic glass substrate has a thickness ranging from about 10 μm to about 300 μm.

16. The laminate of claim 13 , wherein the electrochromic glass substrate has a thickness ranging from about 40 μm to about 120 μm.

17. The laminate of claim 13 , wherein the outer laminate glass pane has a thickness ranging from about 2.3 mm to about 12 mm.

18. A laminate electrochromic device, comprising:
a glass pane;
a substrate, wherein the substrate is annealed glass;
an electrochromic device, wherein the electrochromic device is on the substrate, wherein the substrate is laminated on the glass pane, wherein the substrate comprises a coefficient of thermal expansion that is different from a coefficient of thermal expansion of the corresponding glass pane, and wherein the electrochromic device has an edge strength of at least 60 MPa and wherein the laminate has an edge strength of at least 17 MPa.

19. The laminate of claim 18 , wherein the laminate has an edge strength of at least 21 MPa.

Assignees

• Sage Electrochromics Inc

Inventors

• Sbar Neil L
• Van Dine John E
• Mccoy Michael A

Classifications

• B32B17/10513 Primary

  Electrochromic layer · CPC title

• B32B17/10045 Primary

  with at least one intermediate layer consisting of a glass sheet · CPC title

• B32B17/10174

  Coatings of a metallic or dielectric material on a constituent layer of glass or polymer · CPC title

• B32B17/10743

  containing acrylate (co)polymers or salts thereof · CPC title

• B32B17/10761

  containing vinyl acetal · CPC title