Second surface transflector for electro-optic device
An electro-optic assembly includes a first partially reflective, partially transmissive substrate defining a first surface and a second surface. A second partially reflective, partially transmissive substrate defines a third surface and a fourth surface. A space is defined between a first substrate and a second substrate. An electro-optic material is disposed between the second surface of the first substrate and the third surface of the second substrate. The electro-optic assembly is operable to change the transmittance state in either a discrete or continuous manner. A transflective coating is disposed on the second surface. The transflective coating includes a silver conductive layer and an overcoat layer including one of a transparent conductive oxide (TCO) and a noble metal. The overcoat layer is disposed between the silver conductive layer and the electro-optic material.
1. An electro-optic assembly, comprising:
a first partially reflective, partially transmissive substrate defining a first surface and a second surface;
a second partially reflective, partially transmissive substrate defining a third surface and a fourth surface;
a space defined between a first substrate and a second substrate;
an electro-optic material disposed between the second surface of the first substrate and the third surface of the second substrate, wherein said electro-optic assembly is operable to change a transmittance state in either a discrete or continuous manner; and
a transflective coating disposed on the second surface, the transflective coating including a silver conductive layer and an overcoat layer including one of a transparent conductive oxide and a noble metal, wherein the overcoat layer is disposed between the silver conductive layer and the electro-optic material.
2. The electro-optic assembly of claim 1 , further comprising:
a base layer disposed between the first substrate and the silver conductive layer, wherein the base layer includes at least one of a transparent conductive oxide (TCO), a dielectric material, and a metal material.
3. The electro-optic assembly of claim 1 , wherein a reflectance plus transmittance of the transflective coating is less than about 70%.
4. The electro-optic assembly of claim 1 , wherein the thickness of the silver conductive layer is between about 6 nm to 15 nm.
5. The electro-optic assembly of claim 1 , wherein the electro-optic material is an electrochromic material.
6. The electro-optic assembly of claim 1 , wherein the electro-optic assembly is integrated into a heads up display system.
7. An electro-optic assembly, comprising:
a first partially reflective, partially transmissive substrate defining a first surface and a second surface;
a second partially reflective, partially transmissive substrate defining a third surface and a fourth surface;
a space defined between the first substrate and the second substrate;
an electro-optic material disposed between the second surface of the first substrate and the third surface of the second substrate, wherein said electro-optic assembly is operable to change a transmittance state in either a discrete or continuous manner; and
a transflective coating disposed on the second surface, the transflective coating including a silver conductive layer and a base layer including at least one of a transparent conductive oxide (TCO), a dielectric material, and a noble metal, wherein the base layer is disposed between the silver conductive layer and the first substrate.
8. The electro-optic assembly of claim 7 , further comprising:
an overcoat layer between the electro-optic material and the silver conductive layer, wherein the overcoat layer includes at least one of a TCO and a noble metal.
9. The electro-optic assembly of claim 7 , wherein the transflective coating includes a first TCO layer, a silver layer, and a second TCO layer.
10. The electro-optic assembly of claim 9 , wherein the first TCO layer and the second TCO layer include indium tin oxide.
11. The electro-optic assembly of claim 7 , wherein a reflectance plus transmittance of the transflective coating is less than about 80%.
12. The electro-optic assembly of claim 7 , wherein a thickness of the silver conductive layer is between about 2 nm to 30 nm.
13. The electro-optic assembly of claim 7 , wherein a reflectance of the transflective coating is greater than about 20%.
14. The electro-optic assembly of claim 7 , wherein the electro-optic material is an electrochromic material.
15. The electro-optic assembly of claim 7 , wherein a sheet resistance value of the transflective coating is less than about 20 ohms/sq.
16. The electro-optic assembly of claim 7 , wherein the electro-optic assembly is integrated into a heads up display system.
17. An electro-optic assembly, comprising:
a first substrate defining a first surface and a second surface;
a second substrate defining a third surface and a fourth surface;
a space defined between the first substrate and the second substrate;
an electro-optic material disposed between the second surface of the first substrate and the third surface of the second substrate; and
a transflective coating disposed on at least one of the first surface and the second surface, the transflective coating including a dielectric layer adjacent to the first substrate and a conductive metallic layer, wherein a transmittance of the transflective coating is between about 15% and 50% and a reflectance of the transflective coating is between about 10% and 50%.
18. The electro-optic assembly of claim 17 , further comprising:
an undercoat metallic layer between the first substrate and the dielectric layer.
19. The electro-optic assembly of claim 18 , wherein the thickness of the metallic layer is between about 0.2 nm and 5 nm.
20. The electro-optic assembly of claim 17 , wherein a reflectance of the transflective coating is between about 15% to 40% and the transmittance is between about 20% to 40%.
21. The electro-optic assembly of claim 17 , wherein the thickness of the dielectric layer is between about 20 nm and 100 nm.
22. The electro-optic assembly of claim 17 , wherein the electro-optic material is an electrochromic material.
23. The electro-optic assembly of claim 17 , wherein the electro-optic assembly is integrated into a heads up display system.