Electrochromic device with anti-iridescent coating
First Claim
1. A device comprising:
- a substrate;
an electrochemical functional system with electrocontrollable optical and/or energy properties, the functional system comprising;
a first electrode coating formed on the substrate;
a second electrode coating; and
at least one electrochemically active layer situated between the first electrode coating and the second electrode coating, at least one active electrochemical layer being capable of passing reversibly between a first state and a second state with optical and/or energy transmission properties different from the first state;
a counter-substrate designed to be disposed on the outside relative to the substrate, on the side of the incident sunlight;
a reflection control coating for attenuating/modifying the color of the device in reflection toward the outside, the reflection control coating being formed on the inner face of the counter-substrate, the reflection control system acting to reduce the saturation values of C* in the colorimetric system (L*, a*, b*) of the device in reflection;
a laminating interlayer made of polymeric material interposed between the reflection control coating and the functional system, the counter-substrate and the laminating interlayer having a refractive index between 1.4 and 1.7 and a thickness greater than 20 μ
m for the laminating interlayer,the reflection control coating having a refractive index and thickness chosen so that C* is less than or equal to 10 for angles of incidence of 60° and
8°
relative to the normal (N) to the outer face of the counter-substrate and that the absolute value of the difference between the value of C* at an angle of incidence of 8° and
the value of C* at an angle of incidence of 60°
is less than or equal to 6.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a device (1) of the electrochromic type comprising successively a substrate (2), a reflection control coating (8), a laminating interlayer (10), a functional system (4) of the electrochromic type and a substrate (2). This particular arrangement of the laminating interlayer between the reflection control coating and the functional system and the choice of the refractive index and thickness of the reflection control coating are such that the saturation values of C* in the colorimetric system (L*, a*, b*) of the device in reflection are less than or equal to 10 for angles of incidence of 60° and 8° relative to the normal (N) to the outer face (6B) of the counter-substrate and that the absolute value of the difference between the value of C* at an angle of incidence of 8° and the value of C* at an angle of incidence of 60° is less than or equal to 6.
17 Citations
28 Claims
-
1. A device comprising:
-
a substrate; an electrochemical functional system with electrocontrollable optical and/or energy properties, the functional system comprising; a first electrode coating formed on the substrate; a second electrode coating; and at least one electrochemically active layer situated between the first electrode coating and the second electrode coating, at least one active electrochemical layer being capable of passing reversibly between a first state and a second state with optical and/or energy transmission properties different from the first state; a counter-substrate designed to be disposed on the outside relative to the substrate, on the side of the incident sunlight; a reflection control coating for attenuating/modifying the color of the device in reflection toward the outside, the reflection control coating being formed on the inner face of the counter-substrate, the reflection control system acting to reduce the saturation values of C* in the colorimetric system (L*, a*, b*) of the device in reflection; a laminating interlayer made of polymeric material interposed between the reflection control coating and the functional system, the counter-substrate and the laminating interlayer having a refractive index between 1.4 and 1.7 and a thickness greater than 20 μ
m for the laminating interlayer,the reflection control coating having a refractive index and thickness chosen so that C* is less than or equal to 10 for angles of incidence of 60° and
8°
relative to the normal (N) to the outer face of the counter-substrate and that the absolute value of the difference between the value of C* at an angle of incidence of 8° and
the value of C* at an angle of incidence of 60°
is less than or equal to 6. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method for producing a device, comprising the steps of:
-
forming a first electrode coating on a substrate; forming a second electrode coating; forming at least one electrochemically active layer designed to be situated between the first electrode coating and the second electrode coating, at least one electrochemically active layer being capable of passing reversibly between a first state and a second state with optical transmission and/or energy properties different from the first state, forming a reflection control coating for modifying/attenuating the color of the device in reflection toward the outside, the reflection control coating being formed on the inner face of a counter-substrate, the counter-substrate being designed to be disposed on the outside relative to substrate, on the side of the incident sunlight, the reflection control coating acting to reduce the saturation values of C* in the colorimetric system (L*, a*, b*) of the device in reflection; using a laminating interlayer made of polymeric material for laminating the counter-substrate, the laminating interlayer being between the reflection control coating and the functional system, the counter-substrate and the laminating interlayer having a refractive index of between 1.4 and 1.7 and a thickness greater than 20 μ
m,the reflection control coating having a refractive index and thickness chosen so that C* is less than or equal to 10 for angles of incidence of 60° and
8°
relative to the normal (N) to the outer face of the counter-substrate and that the absolute value of the difference between the value of C* at an angle of incidence of 8° and
the value of C* at an angle of incidence of 60°
is less than or equal to 6. - View Dependent Claims (26, 27)
-
-
28. A device comprising:
-
a substrate; an electrochemical functional system with electrocontrollable optical and/or energy properties, the functional system comprising; a first electrode coating formed on the substrate; a second electrode coating; and at least one electrochemically active layer situated between the first electrode coating and the second electrode coating, at least one active electrochemical layer being capable of passing reversibly between a first state and a second state with optical and/or energy transmission properties different from the first state; a counter-substrate designed to be disposed on the outside relative to the substrate, on the side of the incident sunlight; a reflection control coating for attenuating/modifying the color of the device in reflection toward the outside, the reflection control coating being formed on the inner face of the counter-substrate the reflection control system acting to reduce the saturation values of C* in the colorimetric system (L*, a*, b*) of the device in reflection; a laminating interlayer made of polymeric material interposed between the reflection control coating and the functional system, the counter-substrate and the laminating interlayer having a refractive index between 1.4 and 1.7 and a thickness greater than 20 μ
m for the laminating interlayer,wherein the reflection control coating has a refractive index and thickness chosen so that C* is less than or equal to 10 for angles of incidence of 60° and
8°
relative to the normal (N) to the outer face of the counter-substrate and that the absolute value of the difference between the value of C* at an angle of incidence of 8° and
the value of C* at an angle of incidence of 60°
is less than or equal to 6; andwherein the coefficient of reflection is between 12% and 25%.
-
Specification