Electrochromic device comprising an integrated heating system
View Patent ↗An electrochromic device including an electrochromic stack and a support, the electrochromic stack successively including: a first current collector; a first electrochromic electrode; an electrolyte; a second electrochromic electrode; a second current collector. The support and the electrochromic stack are separated by a dielectric layer and a heating system in contact with the support. Further, the heating system is sized to modify at least one of the optical characteristics of the electrochromic device.
1. An electrochromic device comprising an electrochromic stack and a support, said electrochromic stack successively comprising:
a first current collector;
a first electrochromic electrode;
an electrolyte;
a second electrochromic electrode;
a second current collector;
wherein the support and the electrochromic stack are separated by a dielectric layer and a heating system in contact with the support;
wherein the heating system is sized to modify at least one optical characteristic of the electrochromic device; and
wherein the heating system is partially transparent to infrared and/or ultraviolet radiation.
2. The electrochromic device of claim 1 , wherein the heating system appears in the form of a structured monolayer or of a structured multilayer, to provide an optical diffusion and/or diffraction.
3. The electrochromic device of claim 1 , wherein the heating system has a thickness in the range from 50 to 5,000 nanometers.
4. The electrochromic device of claim 1 , wherein the heating system appears in the form of a grid; of interconnected lines; or of pads interconnected by an electric conductor.
5. The electrochromic device of claim 4 , wherein the heating system has a space between lines or between pads in the range from 20 to 2,000 micrometers.
6. The electrochromic device of claim 4 , wherein the heating system has a line or pad width in the range from 0.2 to 20 micrometers.
7. The electrochromic device of claim 4 , wherein the heating system has a thickness/space between lines or between pads ratio in the range from 0.2 to 50.
8. The electrochromic device of claim 4 , wherein the heating system has a space between lines or between pads in the range from 50 to 200 micrometers.
9. The electrochromic device of claim 4 , wherein the heating system has a line or pad width in the range from 5 to 10 micrometers.
10. The electrochromic device of claim 1 , wherein the heating system is made of a material selected from the group consisting of Cr; Ni; NiCr; Ta; W; Mo; Pt; TiN; TiAlN; TaN; RuO 2 ; bismuth ruthenate; and bismuth iridate.
11. The electrochromic device of claim 1 , wherein the electrochromic stack is covered with an encapsulation layer.
12. The electrochromic device of claim 1 , wherein the dielectric material is selected from the group consisting of SiO 2 ; SiN; TiO 2 ; AlN; and Al 2 O 3 .
13. The electrochromic device of claim 1 , wherein the dielectric material is AlN.