Electrochromic system with less than 30 seconds switching time
First Claim
1. An electrochromic system comprising of two glass sheets (1, 4) coated with first and second electroconductive layers (2, 5) separated by a layer of an electrochromic material (9), an electrolyte (8) and a counterelectrode (7), said electroconductive layers (2, 5) each being provided with an electroconductive strip (3, 6) made of a material whose electric conductivity is high relative to that of electroconductive layers (2, 5), said electroconductive strips (3, 6) being placed along the opposite edges of the electroconductive layers and connected to a voltage generator which applies in coloring phase (or in fading phase), between two points A and B on the first and second electroconductive layers, respectively, (2, 5) which are in the immediate vicinity of the electroconductive strips (3, 6) a potential difference U1 =(VA -VB)(t) so that between point A and a point R on the second electroconductive layer, directly facing point A, there is a potential difference U2 =(VA -VR)(t)=Uo, where Uo is constant and chosen from the stability range of the coloring (or fading) reaction.
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Accused Products
Abstract
The invention relates to an electrochromic glazing consisting of two glass sheets (1, 4) coated with first and second transparent electroconductive layers (2, 5), separated by a layer of an electrochromic material (9), an electrolyte (8) and a counterelectrode (7), said transparent electroconductive layers (2, 5) each being provided with an electroconductive strip (3, 6) parallel to the length of the glazing, made of a material whose electric conductivity is high relative to that of transparent electroconductive layers (2, 5). The electroconductive strips (3, 6) are placed along the opposite edges of the glazing and are connected to a voltage generator which applies in coloring phase (or in fading phase), between two points A and B on the electroconductive strips (3, 6) a potential difference U1 =(VA -VB) (t) so that between point A on the electroconductive strip on the first electroconductive layer and a point R on the second electroconductive layers, directly facing point A, there is a potential difference U2 =(VA -VR) (t)=Uo , where Uo is constant and chosen from the stability range of the coloring (or fading) reaction.
154 Citations
20 Claims
- 1. An electrochromic system comprising of two glass sheets (1, 4) coated with first and second electroconductive layers (2, 5) separated by a layer of an electrochromic material (9), an electrolyte (8) and a counterelectrode (7), said electroconductive layers (2, 5) each being provided with an electroconductive strip (3, 6) made of a material whose electric conductivity is high relative to that of electroconductive layers (2, 5), said electroconductive strips (3, 6) being placed along the opposite edges of the electroconductive layers and connected to a voltage generator which applies in coloring phase (or in fading phase), between two points A and B on the first and second electroconductive layers, respectively, (2, 5) which are in the immediate vicinity of the electroconductive strips (3, 6) a potential difference U1 =(VA -VB)(t) so that between point A and a point R on the second electroconductive layer, directly facing point A, there is a potential difference U2 =(VA -VR)(t)=Uo, where Uo is constant and chosen from the stability range of the coloring (or fading) reaction.
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14. An electrochromic system comprising:
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two rectangular and parallel sheets of chemically inert transparent material where the north edge and south edge of the sheets are greater than or of equal length to the east and west edges of the sheets; first and second electroconductive layers coating the inner faces of the two transparent sheets and separated by; a layer of an electrochemical material; an electrolyte; and a counterelectrode; a first electroconductive strip made of a material whose electrical conductivity is high relative to that of the first and second electroconductive layers and connected along the entire length of the north edge of the first electroconductive layer; a second electroconductive strip made of a material whose electric conductivity is high relative to that of the first and second electroconductive layers and connected along the entire length of the south edge of the second electroconductive layer; a third electroconductive strip made of a material whose electric conductivity is high relative to that of the first and second electroconductive layers and connected along the entire length of the north edge of the second electroconductive layer; and a voltage generator which applies in coloring phase (or in fading phase), between two points A and B associated with the first and second electroconductive strips, respectively, a potential difference U1 =(VA -VB) (t) so that between point A and a point R associated with the third electroconductive strip, point R directly facing point A, there is a potential difference U2 =(VA -VR)(t)=Uo, where Uo is constant and chosen from the stability range of the coloring (or fading) reaction.
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15. A method of varying light transmission in an electrochromic system comprising:
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employing an electrochromic system comprising two rectangular and parallel sheets of chemically inert transparent material where the north edge and south edge of the sheets are greater than or of equal length to the east and west edges of the sheets, first and second electroconductive layers coating the inner faces of the two transparent sheets, and separated by a layer of an electrochromic material, an electrolyte, and a counterelectrode, a first electroconductive strip made of a material whose electric conductivity is high relative to that of the first and second electroconductive layers and connected along the entire length of the north edge of the first electroconductive layer, a second electroconductive strip made of a material whose electric conductivity is high relative to that of the first and second electroconductive layers and connected along the entire length of the south edge of the second electroconductive layer, and a third electroconductive strip made of a material whose electric conductivity is high relative to that of the first and second electroconductive layers and connected along the entire length of the north edge of the second electroconductive layer; applying a potential difference, between points A and B associated with the first and second electroconductive strips, respectively, equal to U1 =(VA -VB) (t); and maintaining a potential difference, between points A and R, point R associated with the third electroconductive strips, equal to U2 =(VA -VR)(t)=Uo, where Uo is a constant and chosen from the stability range of the coloring (or fading) reaction. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification