CN115291449B - Conductive mirror of electrochromic mirror - Google Patents
Conductive mirror of electrochromic mirror Download PDFInfo
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- CN115291449B CN115291449B CN202210965029.8A CN202210965029A CN115291449B CN 115291449 B CN115291449 B CN 115291449B CN 202210965029 A CN202210965029 A CN 202210965029A CN 115291449 B CN115291449 B CN 115291449B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
- G02F2001/1536—Constructional details structural features not otherwise provided for additional, e.g. protective, layer inside the cell
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention relates to the technical field of electrochromic mirrors, in particular to a conductive mirror of an electrochromic mirror. The conductive mirror comprises a glass substrate, five layers of films are plated on the glass substrate in a single-sided film plating mode, and a niobium pentoxide film, a first nickel-chromium alloy film, a silver film, a second nickel-chromium alloy film and an Indium Tin Oxide (ITO) film are sequentially plated on the upper surface of the glass substrate. By adopting the scheme of the invention, the cost of the coating material is reduced by about 70 percent; because the nickel-chromium protective layer is added, the physical and chemical resistance is improved, and the adhesive force is also greatly improved; the ITO is adopted as the conductive layer on the outer layer of the coated glass, so that the conductivity is increased, the reflection is enhanced, and the requirements of a conductive mirror are completely met; because the absorption is reduced, the reflection is 77 percent and the transmission is 13 percent, so that the light sensor is convenient to install behind the mirror in application, and the mirror is controlled to change color along with the change of light.
Description
Technical Field
The invention relates to the technical field of electrochromic mirrors, in particular to a conductive mirror of an electrochromic mirror.
Background
Electrochromic mirror is mainly applied to rearview mirrors in high-grade cars. Such a mirror darkens when subjected to subsequent glare. This protects the eyes of the driver and greatly assists in safe driving.
Coated glass of electrochromic mirrors, also known as conductive mirrors. The structure of the coated glass of the conductive mirror part of the existing electrochromic mirror is as follows: glass/Nb 2O5/AgPdAu (namely glass/niobium pentoxide/silver-palladium-gold alloy), and the outermost layer is directly plated with silver-palladium-gold alloy to ensure the physical and chemical stability of the film, wherein the ratio of gold to palladium is up to 4%. The coating has certain stability, but has two defects, namely poor adhesive force and high price, and influences the popularization in a large range. And the palladium and gold are added, so that the absorption ratio is relatively large, the reflection and the transmission are high, and certain difficulty is brought.
Disclosure of Invention
The invention aims to solve the technical problems in the related art at least to a certain extent by providing a conductive mirror of an electrochromic mirror. The invention adopts single-sided coating, two noble metals of gold and palladium are not used any more, and the material cost can be reduced by about 70 percent; the nickel-chromium (NiCr) is adopted as a bottom layer and a protective layer, so that the adhesive force is increased, and the physical and chemical resistance is also improved; and the outer ITO layer is used as a conductive layer, so that the conductivity of the coated glass is increased, the reflection and transmission are enhanced, and the absorption is reduced.
The technical scheme adopted is as follows:
The conductive mirror comprises a glass substrate, five layers of films are plated on the glass substrate in a single-sided film plating mode, a niobium pentoxide film plated on the upper surface of the glass substrate, a first nichrome film plated on the upper surface of the niobium pentoxide film, a silver film plated on the first nichrome film, a second nichrome film plated on the silver film, and an Indium Tin Oxide (ITO) film plated on the second nichrome film.
Preferably, the conductive mirror reflects 77%, transmits 13% and absorbs 10% of visible light.
Preferably, the thickness of the glass substrate is 1.5-2mm.
Preferably, the thickness of each layer of coating film on the glass substrate is as follows:
A first layer of niobium pentoxide film with a thickness of 35-40nm;
The thickness of the second layer of the first nichrome film is 0.4-0.9nm;
a third silver film with a thickness of 34-38nm;
A fourth layer of second nichrome film with the thickness of 0.4-0.9nm;
The fifth layer of indium tin oxide film has a thickness of 70-100nm.
Preferably, the indium tin oxide film is a conductive layer and a protective layer, and the film plating is realized under the high-temperature condition.
Preferably, the indium tin oxide film layer is plated on the metal layer, so that the square resistance is smaller than 1 Ω/≡.
Preferably, the metal nickel-chromium layer is plated on the metal silver layer to protect the silver layer from environmental influences and damages.
Preferably, the temperature of the indium tin oxide plating film is controlled between 280 ℃ and 300 ℃.
Compared with the prior art, the invention has the following advantages:
The conductive mirror of the electrochromic mirror reduces the cost of a coating material, can reduce about 70%, can realize the requirements of reflecting 77% and transmitting 13% of the electrochromic mirror, and has lower absorption; because the nickel-chromium protective layer is added, the physical and chemical resistance is improved, and the adhesive force is also greatly improved; the silver layer is protected by the nickel-chromium layer, so that the physical and chemical resistance is more stable, and the silver layer can be waiting for processing for a longer time;
The ITO is adopted as the conductive layer on the outer layer of the coated glass, so that the conductivity and the protectiveness are improved, the reflection is enhanced, and the silver metal film layer is saved, thereby saving the cost.
Drawings
FIG. 1 is a diagram of the structure of a conductive mirror of an electrochromic mirror of the present invention;
FIG. 2 is a reflectance spectrum of a conductive mirror of an electrochromic mirror according to embodiment 1 of the present invention;
fig. 3 is a transmission spectrum of a conductive mirror of an electrochromic mirror according to embodiment 1 of the present invention.
In the figure, 0-glass substrate; a 1-niobium pentoxide film; 2-a first nichrome film; 3-silver film; 4-a second nichrome film; 5-indium tin oxide film.
Detailed Description
The drawings are for illustrative purposes only; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; some well known structures in the drawings and descriptions thereof may be omitted to those skilled in the art, and thus, should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include at least one such feature.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.
Example 1
Electrochromic mirrors are basically used as automotive rearview mirrors. The electrochromic mirror comprises a front transparent conductive glass, an intermediate electrochromic paste, and a rear conductive mirror. The invention aims to improve the rear conductive mirror, and the rear conductive mirror meets the requirements by coating the glass substrate.
As shown in fig. 1, a conductive mirror of an electrochromic mirror includes a glass substrate 0, wherein the thickness of the glass substrate 0 is 1.5mm, five layers of films are plated on the glass substrate 0 in a single-sided film plating mode, a niobium pentoxide film 1 plated on the upper surface of the glass substrate 0 is a first layer of film, a first nichrome film 2 plated on the upper surface of the niobium pentoxide film 1 is a second layer, a silver film 3 plated on the upper surface of the first nichrome film 2 is a third layer, a second nichrome film 4 plated on the upper surface of the silver film 3 is a fourth layer, and an Indium Tin Oxide (ITO) film 5 plated on the upper surface of the second nichrome film 4 is a fifth layer.
The thickness of each layer of coating film is as follows:
a first layer of niobium pentoxide film 1 having a thickness of 38nm;
A second layer of first nichrome film 2 with a thickness of 0.4nm;
a third silver film 3 with a thickness of 36.4nm;
A fourth layer of second nichrome film 4 with a thickness of 0.7nm;
The fifth indium tin oxide film 5 had a thickness of 97.3nm.
The coating structure of the application is mainly characterized by good stability, low price, silver-gold-palladium alloy, high price, high absorption and no good adhesive force.
The physical and chemical resistance is tested by an acid resistance test, a sodium chloride hot bath resistance test, a salt spray resistance test or a cold and hot impact test.
Adhesion test, using a hundred knife and tape tear test. Table 1 shows the performance comparison of the coated glass of the electrochromic mirror of the application with the coated glass of the electrochromic mirror silver-plated gold-palladium alloy in the background art.
Table 1 shows the performance comparison of the coated glass of the electrochromic mirror of the application and the coated glass of the silver-plated gold-palladium alloy
As can be seen from Table 1, the coated glass of the present application has superior physical and chemical resistance and adhesion to those of silver-gold-palladium alloy (non-indium-tin oxide coated) coated glass and good stability.
The visible spectrum has no precise range, and the wavelength of electromagnetic waves which can be perceived by human eyes is 400-700nm, and the human eyes with normal vision are most sensitive to the electromagnetic waves with the wavelength of about 555 nm. As shown in fig. 2, as can be seen from the reflection spectrum, the reflectivity of the conductive mirror is sharply increased in the visible light range, and is up to 80%, and the reflectivity is generally in the range of 75% -80%, so that the reflectivity of 77% can be realized. As shown in FIG. 3, as can be seen from the transmission spectrum, the transmittance of the coated glass is drastically reduced in the visible light range, and the transmittance is generally in the range of 12% -16%, so that the transmittance of 13% can be realized.
The conductive mirror of the electrochromic mirror provided by the invention has the advantages that about 77% of visible light is reflected, about 13% of visible light is transmitted, about 10% of visible light is absorbed, the thickness of each layer of film needs to be strictly controlled, and the absorption is controlled within 10%. According to the film coating structure, the protective layer is added for the silver film of the main reflecting layer, so that noble metal is not required to be added to increase the stability of the silver film, a common nickel-chromium layer is added, the stability of physical and chemical resistance is increased, the adhesive force is improved under the cooperation of niobium pentoxide, the light transmission performance is improved, and the reflection is increased by adding the ITO layer at the outermost layer. Thus, the absorption is reduced, the realization of 77% reflection and 13% transmission is facilitated, and the light sensor is conveniently arranged behind the mirror in application, and the color of the mirror is controlled to change along with the change of light.
Further, referring to fig. 1, the outermost ITO conductive layer is realized under a high-temperature plating film, so that the conductive performance is good, the square resistance of the whole film layer is less than 1Ω/≡, and the conductivity completely meets the requirements of a conductive mirror. Because of the requirement of ITO conductive performance, the invention can only be implemented on a high-temperature vertical coating line, and the specific implementation temperature is controlled between 280 and 300 ℃.
Example 2
The electroconductive mirror of the electrochromic mirror comprises a glass substrate 0, wherein the thickness of the glass substrate 0 is 2mm, five layers of films are plated on the glass substrate 0 in a single-sided film plating mode, and the thickness of each layer of film plating is as follows:
a first layer of niobium pentoxide film with a thickness of 40nm;
A second layer of the first nichrome film having a thickness of 0.6nm;
A third silver film with a thickness of 37nm;
a fourth layer of a second nichrome film having a thickness of 0.6nm;
The fifth layer of indium tin oxide film has a thickness of 93nm.
Otherwise, the same as in example 1 was conducted.
Example 3
The electroconductive mirror of the electrochromic mirror comprises a glass substrate 0, wherein the thickness of the glass substrate 0 is 2mm, five layers of films are plated on the glass substrate 0 in a single-sided film plating mode, and the thickness of each layer of film plating is as follows:
a first layer of niobium pentoxide film with a thickness of 35nm;
A second layer of the first nichrome film having a thickness of 0.6nm;
a third silver film with a thickness of 39nm;
a fourth layer of a second nichrome film having a thickness of 0.6nm;
The fifth layer of indium tin oxide film had a thickness of 83nm.
Otherwise, the same as in example 1 was conducted.
Other parts of the embodiments of the invention not described are common practice in the art.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but is not limited to the embodiments disclosed, as any changes, modifications, additions or substitutions within the spirit and scope of the invention will become apparent to those skilled in the art and are intended to be included within the scope of the invention.
Claims (3)
1. The conductive mirror of the electrochromic mirror comprises a glass substrate and adopts a single-sided coating film, and is characterized in that one side of the glass substrate is coated with five layers of films, a niobium pentoxide film coated on the upper surface of the glass substrate is a first layer, a first nichrome film coated on the upper surface of the niobium pentoxide film is a second layer, a silver film coated on the upper surface of the first nichrome film is a third layer, a second nichrome film coated on the upper surface of the silver film is a fourth layer, and an indium tin oxide film coated on the second nichrome film is a fifth layer;
the thickness of each layer of coating film on the glass substrate is as follows:
a first layer of niobium pentoxide film having a thickness of 38nm;
a second layer of the first nichrome film having a thickness of 0.49nm;
a third silver film with a thickness of 36.4nm;
A fourth layer of a second nichrome film having a thickness of 0.7nm;
A fifth indium tin oxide film having a thickness of 97.3nm;
The reflectivity of the conductive mirror to visible light is 77%, the transmissivity is 13%, and the absorption is less than 10%;
the indium tin oxide film is a conductive layer, coating is realized under the high temperature condition, and the square resistance of the indium tin oxide film layer is less than 1 omega/≡.
2. A conductive mirror for an electrochromic mirror according to claim 1, in which the thickness of said glass substrate is 1.5-2mm.
3. An electrochromic mirror according to claim 1, in which the coating temperature is controlled between 280 and 300 degrees celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965029.8A CN115291449B (en) | 2022-08-12 | 2022-08-12 | Conductive mirror of electrochromic mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965029.8A CN115291449B (en) | 2022-08-12 | 2022-08-12 | Conductive mirror of electrochromic mirror |
Publications (2)
| Publication Number | Publication Date |
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| CN115291449A CN115291449A (en) | 2022-11-04 |
| CN115291449B true CN115291449B (en) | 2024-08-20 |
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| CN202210965029.8A Active CN115291449B (en) | 2022-08-12 | 2022-08-12 | Conductive mirror of electrochromic mirror |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115932787A (en) * | 2022-11-24 | 2023-04-07 | 福建富兰光学股份有限公司 | A lidar window with heated electrode strips and its manufacturing method |
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| CN202293507U (en) * | 2011-11-03 | 2012-07-04 | 信义玻璃(天津)有限公司 | Bendable dark brown low-emissivity coated glass |
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| CN202943942U (en) * | 2012-12-05 | 2013-05-22 | 金堆城洛阳节能玻璃有限公司 | High-transmittance type temperable low-emissivity coated glass |
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| US4959257A (en) * | 1987-07-17 | 1990-09-25 | Lucas Industries Public Limited Company | Transparencies |
| CN202293507U (en) * | 2011-11-03 | 2012-07-04 | 信义玻璃(天津)有限公司 | Bendable dark brown low-emissivity coated glass |
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| CN115291449A (en) | 2022-11-04 |
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