Electrochromic devices, assemblies incorporating electrochromic devices, and/or methods of making the same

• US 8,289,610 B2
• Filed: 07/14/2010
• Issued: 10/16/2012
• Est. Priority Date: 08/27/2009
• Status: Active Grant

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: Veerasamy, Vijayen S.
• Primary Examiner(s): Spector, David N
• Application Number:
  US12/805,144
• Publication Number:
  US 20110051221A1
• Time in Patent Office: 825 Days
• Field of Search: 359/265, 359/273, 359/274, 359/275
• US Class Current: 359/275
• CPC Class Codes: B32B 17/10045 with at least one intermediate layer consisting of a glass sheet
• CPC Class Codes: B32B 17/10055 with at least one intermediate air space
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10981 Pre-treatment of the layers
• CPC Class Codes: E06B 2009/2464 featuring transparency control by applying voltage, e.g. LCD, electrochromic panels
• CPC Class Codes: E06B 3/6722 with adjustable passage of light
• CPC Class Codes: E06B 9/24 Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blindsoperating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00
• CPC Class Codes: G02F 1/1508 using a solid electrolyte
• CPC Class Codes: G02F 1/1524 Transition metal compounds
• CPC Class Codes: G02F 1/1525 characterised by a particular ion transporting layer, e.g. electrolyte
• CPC Class Codes: G02F 1/1533 structural features not otherwise provided for
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 156/1062 Prior to assembly

Abstract

Certain example embodiments of this invention relate to electrochromic (EC) devices, assemblies incorporating electrochromic devices, and/or methods of making the same. More particularly, certain example embodiments of this invention relate to improved EC materials, EC device stacks, high-volume manufacturing (HVM) compatible process integration schemes, and/or high-throughput low cost deposition sources, equipment, and factories.

Claims

1. An electrochromic assembly, comprising:

first, second, and third glass substrates, the second and third substrates being substantially parallel to and spaced apart from one another;

a plurality of electrochromic device layers supported by the first glass substrate, the plurality of electrochromic device layers comprising a first transparent conductive coating, a counter electrode layer, an ion conductor layer, an electrochromic layer, and a second transparent conductive coating;

wherein the first and second glass substrates are laminated and/or bonded to one another, and wherein the second glass substrate is thermally tempered and the first glass substrate is not thermally tempered, and

wherein the electrochromic device layers face the third glass substrate.

2. The assembly of claim 1, wherein each said transparent conductive coating includes a layer comprising silver sandwiched by layers comprising ITO, and further wherein NiCr inclusive or Cu layers are provided between the layer comprising silver and the layers comprising ITO, and wherein the electrochromic device layers are sputter-deposited.

3. The assembly of claim 1, wherein the sheet resistance of each said transparent conductive coating is less than 10 ohms/square.

4. The assembly of claim 1, wherein the first glass substrate is laminated and/or bonded to the second glass substrate via a polymer-based layer.

5. The assembly of claim 1, wherein the electrochromic device layers are sputter deposited.

6. The assembly of claim 1, further comprising one or more low-E coatings, the low-E coating(s) being supported by an inner surface of the second substrate, one or both surfaces of the first substrate, and/or an interior surface of the third glass substrate.

7. The assembly of claim 6, further comprising a UV blocking coating on the inner surface of the second substrate.

8. The assembly of claim 1, wherein the ion conductor layer includes LiPON.

9. The assembly of claim 8, wherein the electrochromic layer comprises WOx.

10. The assembly of claim 9, wherein the counter electrode layer, the ion conductor layer, and/or the electrochromic layer is/are doped with Mg.

11. The assembly of claim 9, wherein the WOx is sub-stoichiometric and is sputter-deposited.

12. The assembly of claim 11, wherein 2.6<

x<

3.

13. An electrochromic window assembly, comprising:

first, second, and third glass substrates, the second and third substrates being substantially parallel to and spaced apart from one another in the window assembly;

a plurality of electrochromic device layers supported by the first glass substrate, the plurality of electrochromic device layers comprising at least one transparent conductive coating and an electrochromic layer;

wherein the first and second glass substrates are laminated to one another via a polymer-based laminating layer, and wherein the second glass substrate is thermally tempered and the first glass substrate is not thermally tempered.

14. The assembly of claim 13, wherein the sheet resistance of said transparent conductive coating is less than 10 ohms/square.

15. The assembly of claim 13, wherein the electrochromic layer is doped with Mg.

16. The assembly of claim 13, further comprising a low-E coating supported by the first glass substrate and/or an interior surface of the third glass substrate.

17. The assembly of claim 13, wherein said transparent conductive coating includes a layer comprising silver sandwiched by layers comprising ITO.

18. The assembly of claim 17, wherein said transparent conductive coating further comprises a layer comprising NiCr provided between the layer comprising silver and at least one of the layers comprising ITO.

19. The assembly of claim 13, wherein the electrochromic layer comprises WOx.

20. The assembly of claim 19, wherein the WOx is sub-stoichiometric.