Chromogenic glazing for automobiles and display filters
First Claim
1. A transparent chromogenic assembly, comprising:
- a pair of facing transparent substrates defining a cavity for enclosing an electrolyte medium;
facing surfaces of the substrates each having a conductive transparent coating, an adhesive spacer element interposed between said substrates;
said conductive coating of at least one of said substrates being interrupted along a demarcation line to insulate contiguous areas on opposite sides of said line from one another;
the conductive coating of at least one of the substrates being overlain with an electrochromic layer comprising at least one transition metal oxide, preferably tungsten oxide; and
a set of busbars deposed toward the periphery of each of said areas.
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Accused Products
Abstract
A transparent chromogenic panel in which color changes are selectively effectable over predefined areas comprises a pair of facing glass substrates each covered with a conductive layer divided into individual energizeable areas each provided with as set of busbars. An electrochromic electrode layer overlies at least one of the conductive layers. An insulating adhesive sealant spaces apart the substrates and insulates the busbar sets from each other and from exposure to the electrolyte and the electrochromic layer, so that each busbar set may be individually energizeable to effect a color change through a respective one of the individual areas. A passive layer is advantageously superimposed over one of the substrates, its color being chosen so that the color and the transmissivity of the passive layer accommodates the range of color change and transmissivity of the electrochromic layer to maintain the transmitted color of the panel in a warm or neutral shade.
124 Citations
36 Claims
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1. A transparent chromogenic assembly, comprising:
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a pair of facing transparent substrates defining a cavity for enclosing an electrolyte medium;
facing surfaces of the substrates each having a conductive transparent coating,an adhesive spacer element interposed between said substrates;
said conductive coating of at least one of said substrates being interrupted along a demarcation line to insulate contiguous areas on opposite sides of said line from one another;
the conductive coating of at least one of the substrates being overlain with an electrochromic layer comprising at least one transition metal oxide, preferably tungsten oxide; and
a set of busbars deposed toward the periphery of each of said areas. - View Dependent Claims (2, 3)
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4. A transparent chromogenic panel for use on the exterior of a transportation vehicle exposed to the weather requiring an average current less than 100 μ
- A/cm2 of active area to maintain any desired state of transmission at a temperature of up to 85C for a duration of at least 8 hours.
- View Dependent Claims (5, 6, 7, 8)
- 9. A device comprising an electrochromic panel and power supply means for energizing said panel at an average current less than 100 microamperes per square cm.
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12. A transparent electrochromic panel having active components defined by a pair of facing glass substrates separated by an electrolyte;
- facing surfaces of the substrates each having a conductive transparent coating and an ion-intercalatable material coating at least one of said coatings being electrochromic, said electrolyte containing at least one dissociable salt;
at least one UV stabilizer;
a redox promoter, and a water content less then 2000 ppm. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
- facing surfaces of the substrates each having a conductive transparent coating and an ion-intercalatable material coating at least one of said coatings being electrochromic, said electrolyte containing at least one dissociable salt;
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22. A method of making an electrochromic panel having a pair of facing glass substrates forming a cell cavity for an electrolyte;
- facing surfaces of the substrates each having a conductive transparent coating where each of these faces is coated with ion-intercalatable electrodes, at least one of which is electrochromic, wherein one of said electrodes is reduced after the cell cavity is formed, comprising;
a. filling said cavity with a reducing fluid medium containing at least one of an anodic and a cathodic redox material;
b. applying a voltage at least once to reduce one of said electrodes;
c. flushing the reducing liquid from the cavity; and
d. filling said cavity with the electrolyte. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
- facing surfaces of the substrates each having a conductive transparent coating where each of these faces is coated with ion-intercalatable electrodes, at least one of which is electrochromic, wherein one of said electrodes is reduced after the cell cavity is formed, comprising;
Specification