Protective coating materials for electrochromic devices
First Claim
Patent Images
1. A process for manufacturing an electrochromic device, comprising the steps of:
- preparing a polymeric solution which when dried will be chemically inert, have high optical qualities and be thermally stable;
out-gassing the polymeric solution under low pressure to remove any micro-bubbles and dissolved gasses from the polymeric solution;
coating an electrochromic cell of an electrochromic device with the polymeric solution in an inert atmosphere; and
annealing the polymeric coating by heating the electrochromic device to a temperature above about 65°
C.
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Abstract
Polymeric coating materials used to protect electrochromic devices from environmental and mechanical damage arc provided. The protective polymeric coating materials are physically, chemically and optically compatible with the electrochromic cell layers of electrochromic devices. The polymeric coating materials are polymers having generic polymer back-bones selected from the group of polyimides, polybenzimidazoles, polybenzothiazoles, polybenzoxazoles, poly(phenylene ethers), polyquinolines, polycarbonates, and polysulfones.
80 Citations
22 Claims
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1. A process for manufacturing an electrochromic device, comprising the steps of:
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preparing a polymeric solution which when dried will be chemically inert, have high optical qualities and be thermally stable;
out-gassing the polymeric solution under low pressure to remove any micro-bubbles and dissolved gasses from the polymeric solution;
coating an electrochromic cell of an electrochromic device with the polymeric solution in an inert atmosphere; and
annealing the polymeric coating by heating the electrochromic device to a temperature above about 65°
C.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A process for manufacturing an electrochromic device, comprising the steps of:
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coating an electrochromic cell of an electrochromic device with a polymeric solution comprising a polymer with the following recurring structural unit;
[poly[2,5-benzoxazolediyl [2,2,2-trifluoro- 1-(trifluoromethyl)ethylidene]-5,2-benzoxazolediyl-4,4′
-phenylether]]n′
, wherein n′
is an integer number; and
annealing the polymeric coating by heating the electrochromic device to a temperature above about 65°
C.
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20. A process for manufacturing an electrochromic device, comprising the steps of:
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coating an electrochromic cell of an electrochromic device with a polymeric solution comprising a polymer with the following recurring structural unit;
[α
-[1,4-Biphenylyl]-ω
-[4-[[4-(4-phenylphenoxy)phenyl]phenylphosphinyl]phenoxy]-poly[oxy-1,4-phenylene(phenylphosphinylidene)-1,4-phenyleneoxy-1,4-phenylene-9H-fluoren-9-ylidene-1,4-phenylene]]n′
, wherein n′
is a real number; and
annealing the polymeric coating by heating the electrochromic device to a temperature above about 65°
C.
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21. A process for manufacturing an electrochromic device, comprising the steps of:
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coating an electrochromic cell of an electrochromic device with a polymeric solution comprising a polymer with the following recurring structural unit;
[α
[1,4-Biphenylyl]-ω
-[[4-(4-phenylphenoxy)phenyl]phenylphosphinyl]phenoxy]-poly[oxy-1,4-phenylene(phenylphosphinylidene)-1,4-phenyleneoxy-1,4-phenylene[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]-1,4-phenylene]]n′
, wherein n′
is a real number; and
annealing the polymeric coating by heating the electrochromic device to a temperature above about 65°
C.
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22. A process for manufacturing an electrochromic device, comprising the steps of:
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coating an electrochromic cell of an electrochromic device with a polymeric solution which when dried forms a polymeric layer that is chemically inert, has high optical qualities and is thermally stable, wherein the coating step is performed in a low humidity, low oxygen atmosphere so that substantially no moisture, oxygen or other chemical is captured under the polymeric layer; and
annealing the polymeric coating by heating the electrochromic device to a temperature above about 65°
C.
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Specification