Conductive film layer of anti-glare rearview mirror and manufacturing method thereof

Abstract

A conductive film layer of an anti-glare rearview mirror and a manufacturing method thereof, the conductive film layer of the anti-glare rearview mirror comprises a reflective film covered on the surface of the reflective glass, the reflective film is an alloy film layer covered on the surface of the reflective glass by vacuum coating of a chromium-ruthenium alloy, and the proportion of ruthenium in the chromium-ruthenium alloy is 23-33%. The manufacturing method comprises the following steps: sintering chromium-ruthenium powder at a ratio of chromium: ruthenium = 3:1 to make an alloy target material, so that the proportion of ruthenium in the alloy target material is controlled between 23% and 33%; cooling the alloy target material to room temperature; making a base glass for vacuum coating, and cleaning the surface of the base glass; and coating the alloy target material on the surface of the base glass by vacuum coating. The advantages of the present invention are: meeting the high reflectivity and low resistance requirements of the reflective film in the anti-glare rearview mirror; the chromium-ruthenium alloy has a cold color tone, and the imaging object has high authenticity; the property is stable and corrosion-resistant.

Description

Technical Field

[0001] The invention relates to the technical field of anti-glare automobile rearview mirror manufacturing, in particular to a conductive film layer of an anti-glare rearview mirror and a manufacturing method thereof. Background Art

[0002] Ordinary exterior rearview mirrors are made of chrome plating with a reflectivity of 45% to 50% and a cool tone. Currently, the popular anti-glare rearview mirrors in China are usually made of silver-gold-palladium or silver-palladium-copper alloy coatings. This film product has the characteristics of high reflectivity and low resistance, but because some metals in the product are colored, the product as a whole will appear a certain light yellow, with a warm tone, and it is difficult to achieve the cool tone of ordinary exterior rearview mirrors.

[0003] There is a Chinese utility model patent with application number CN202323485577.X and the name of "An Electrochromic Rearview Mirror", which discloses an electrochromic rearview mirror, including: an electrochromic device, a reflective film layer and a transition film layer, wherein the electrochromic device includes a rear glass substrate, the transition film layer is arranged on the front surface of the rear glass substrate, and the reflective film layer is arranged on the front surface of the transition film layer; wherein the reflective film layer adopts a pure metal film layer, and the transition film layer adopts an oxidized metal film layer. The electrochromic rearview mirror can prevent the reflective film layer adopting a pure metal film layer from falling off. However, the reflective film of the rearview mirror needs to be protected by a transition film, and the processing is relatively cumbersome, and there is still room for improvement in production efficiency. Therefore, the structure of the reflective film of the rearview mirror needs to be further improved. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a conductive film layer for an anti-glare rearview mirror which is simple to manufacture, has a cold color tone, has high authenticity of reflected imaging objects, has stable performance, and is corrosion-resistant, in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: the conductive film layer of the anti-glare rearview mirror includes a reflective film covering the surface of the reflective glass, and is characterized in that: the reflective film is an alloy film layer covered on the surface of the reflective glass by vacuum coating of a chromium-ruthenium alloy, and the proportion of ruthenium in the chromium-ruthenium alloy is 23-33%.

[0006] As an improvement, the thickness of the alloy film layer may preferably be 100-120 nm, and the resistance may be 1-3Ω.

[0007] As a further improvement, the resistance may preferably be 2Ω.

[0008] As an improvement, the reflectivity of the alloy film layer may preferably be greater than or equal to 60%.

[0009] As an improvement, the reflective glass may preferably be a curved glass with a central portion convex outward, and the reflective film may preferably be arranged on the convex surface of the curved glass.

[0010] The second technical problem to be solved by the present invention is to provide a method for producing a conductive film layer for an anti-glare rearview mirror, which is simple to produce, has a cold tone, has a high authenticity of reflected imaging objects, has stable performance, and is corrosion-resistant, in response to the above-mentioned existing technical status.

[0011] The technical solution adopted by the present invention to solve the above technical problems is: the method for manufacturing the conductive film layer of the anti-glare rearview mirror is characterized by comprising the following steps:

[0012] 1. Sintering chromium-ruthenium powder in a ratio of chromium to ruthenium = 3:1 to produce an alloy target material, so that the proportion of ruthenium in the alloy target material is controlled between 23% and 33%;

[0013] 2. Cool the alloy target to room temperature;

[0014] 3. Prepare the base glass for vacuum coating and clean the surface of the base glass;

[0015] Fourth, the alloy target is plated on the surface of the base glass by vacuum coating, thus completing the production of the conductive film layer of the anti-glare rearview mirror.

[0016] As an improvement, in step 4, the thickness of the conductive film layer may preferably be 100-120 nm, and the resistance may be 1-3Ω.

[0017] As a further improvement, in step 4, the reflectivity of the conductive film layer may preferably be greater than or equal to 60%.

[0018] As a further improvement, the base glass may preferably be a curved glass with a central portion convex outward, and the conductive film layer is arranged on the convex surface of the curved glass.

[0019] As a further improvement, the base glass may preferably be connected to the curved surface glass via an annular sealant to form a hollow glass structure, the inner cavity of the glass structure is filled with an electrochromic liquid, a transparent ITO film is arranged on the concave surface of the surface glass, and a positive electrode and a negative electrode are respectively arranged at both ends of the glass structure.

[0020] Compared with the prior art, the advantages of the present invention are: the chromium-ruthenium alloy is vacuum-plated on the reflective glass to obtain high reflectivity and low resistance properties that single chromium and ruthenium metals do not have, which can meet the design requirements of the reflective film on the surface of the reflective glass in the anti-glare rearview mirror; after the chromium and ruthenium powders are sintered into an alloy according to the weight ratio set by the present invention, they have a unique crystal structure, thereby meeting the high reflectivity and low resistance requirements of the reflective film in the anti-glare rearview mirror; the chromium-ruthenium alloy has a cold color tone, so the reflected imaged object will not be warm-colored, the imaged object has high authenticity, and the visual experience is good; after vacuum coating on the reflective glass, the performance is stable and has good corrosion resistance, which can effectively extend the service life of the reflective film. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A stereoscopic diagram of an embodiment of the present invention applied in an anti-glare rearview mirror;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure;

[0023] Figure 3 yes Figure 2 Schematic diagram of the performance of medium reflective film with different chromium-ruthenium ratios. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, the conductive film layer of the anti-glare rearview mirror of this embodiment includes a reflective film 21 covering the surface of the reflective glass 2. The reflective film 21 is an alloy film layer covered on the surface of the reflective glass 2 by vacuum coating of a chromium-ruthenium alloy, and the proportion of ruthenium in the chromium-ruthenium alloy is 23-33%. The thickness of the alloy film layer is 100-120nm, and the resistance is 1-3Ω. The resistance is 2Ω. The reflectivity of the alloy film layer is greater than or equal to 60%. The reflective glass 2 is an arc-shaped glass with a convex middle portion, and the reflective film 21 is arranged on the convex surface of the arc-shaped glass.

[0026] The method for manufacturing the conductive film layer of the anti-glare rearview mirror of this embodiment comprises the following steps:

[0027] 1. Sintering chromium-ruthenium powder in a ratio of chromium to ruthenium = 3:1 to produce an alloy target material, so that the proportion of ruthenium in the alloy target material is controlled between 23% and 33%;

[0028] 2. Cool the alloy target to room temperature;

[0029] 3. Prepare the base glass for vacuum coating and clean the surface of the base glass;

[0030] Fourth, the alloy target is plated on the surface of the base glass by vacuum coating, thus completing the production of the conductive film layer of the anti-glare rearview mirror.

[0031] In step 4, the thickness of the conductive film layer is 100-120 nm, and the resistance is 1-3Ω. The reflectivity of the conductive film layer is greater than or equal to 60%. The base glass is an arc-shaped glass with a convex middle portion, and the conductive film layer is arranged on the convex surface of the arc-shaped glass.

[0032] The base glass, i.e., the reflective glass 2, is connected to the curved surface glass 1, i.e., the transparent glass, through an annular sealant 3 to form a hollow glass structure. The inner cavity of the glass structure is filled with an electrochromic liquid 4, a transparent ITO film 11 is arranged on the concave surface of the surface glass 1, and a positive electrode 51 and a negative electrode 52 are respectively arranged at both ends of the glass structure.

[0033] Working principle: Chromium and ruthenium powders can be sintered in a set ratio to produce low resistance and high reflectivity crystals, such as Figure 3 As shown, when the weight ratio of ruthenium in the chromium-ruthenium alloy is 23-33%, the alloy has stable properties and low resistance, which meets the design requirements of the reflective film.

Claims

1. A conductive film layer for an anti-glare rearview mirror, comprising a reflective film (21) covering the surface of a reflective glass (2), characterized in that: The reflective film (21) is an alloy film layer formed by vacuum coating a chromium-ruthenium alloy on the surface of the reflective glass (2), wherein the proportion of ruthenium in the chromium-ruthenium alloy is 23-33%.

2. The conductive film layer according to claim 1, characterized in that: The alloy film layer has a thickness of 100-120 nm and a resistance of 1-3Ω.

3. The conductive film layer according to claim 2, characterized in that: The resistor is 2Ω.

4. The conductive film layer according to any one of claims 1 to 3, characterized in that: The reflectivity of the alloy film layer is greater than or equal to 60%.

5. The conductive film layer according to any one of claims 1 to 3, characterized in that: The reflective glass (2) is an arc-shaped glass with a central portion convex outward, and the reflective film (21) is arranged on the convex surface of the arc-shaped glass.

6. A method for manufacturing a conductive film layer of an anti-glare rearview mirror according to claims 1 to 5, characterized in that: The following steps are included:

1. Sintering chromium-ruthenium powder in a ratio of chromium to ruthenium = 3:1 to produce an alloy target material, so that the proportion of ruthenium in the alloy target material is controlled between 23% and 33%; 2. Cool the alloy target to room temperature; 3. Prepare the base glass for vacuum coating and clean the surface of the base glass; Fourth, the alloy target is plated on the surface of the base glass by vacuum coating, thus completing the production of the conductive film layer of the anti-glare rearview mirror.

7. The method according to claim 6, characterized in that: In step 4, the thickness of the conductive film layer is 100-120 nm, and the resistance is 1-3Ω.

8. The method according to claim 6, characterized in that: In step 4, the reflectivity of the conductive film layer is greater than or equal to 60%.

9. The method according to claim 6, characterized in that: The base glass is an arc-shaped glass with a middle portion bulging outwards, and the conductive film layer is arranged on the convex surface of the arc-shaped glass.

10. The manufacturing method according to claim 9, characterized in that: The base glass is connected to the curved surface glass (1) via an annular sealant (3) to form a hollow glass structure, the inner cavity of the glass structure is filled with an electrochromic liquid (4), a transparent ITO film (11) is arranged on the concave surface of the surface glass (1), and a positive electrode (51) and a negative electrode (52) are respectively arranged at both ends of the glass structure.

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