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Multi-functional reflective film of on-board exterior mirror and preparation method

A reflective film and multi-functional technology, which is applied in the field of automotive mirrors, can solve the problems of film erosion, film corrosion and peeling, and non-adjustment, so as to improve mirror reflectivity, break through the bottleneck of coating, and ensure reliability.

Inactive Publication Date: 2017-01-11
YICHANG NANBO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the film layer is loose and porous, which is easily affected by the environment, which will cause the film layer to erode and affect the performance, and the specular reflectance is low, so it cannot be adjusted
The existing metal film is mainly obtained by evaporation or electrochemical reaction. Due to its high absorption rate, the film layer required for the reflective film is relatively thick, which is easily oxidized in the air, and the performance of the film layer changes quickly. In the middle, it is easy to cause the film layer to corrode and fall off, which will affect the driving safety

Method used

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  • Multi-functional reflective film of on-board exterior mirror and preparation method
  • Multi-functional reflective film of on-board exterior mirror and preparation method
  • Multi-functional reflective film of on-board exterior mirror and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The material with high refractive index is Nb 2 o 5 , the refractive index at 550nm is 2.32, the low refractive index material is SiO2, the refractive index at 550nm is 1.46, the metal material is Al, the refractive index at 550nm is 0.82, the conductive material is ITO, the refractive index at 550nm is 1.92, the film thickness as follows:

[0021] The material of the first high refractive index layer is Nb 2 o 5 , the thickness is 13±0.5nm; the material of the first low refractive index layer is SiO 2 , the thickness is 78±2nm; the material of the second high refractive index layer is Nb 2 o 5 , the thickness is 32±1nm; the material of the second low refractive index layer is SiO 2 , the thickness is 20±2nm; the metal material layer is Al, the thickness is 11±1nm; the material of the third low refractive index layer is SiO 2 , the thickness is 125±5nm; the conductive layer is ITO, the thickness is 25nm;

[0022] According to the above film structure and corresp...

Embodiment 2

[0024] The high refractive index material used is TiO2, the refractive index at 550nm is 2.38, the low refractive index material is SiO2, the refractive index at 550nm is 1.46, the metal material is Al, the refractive index at 550nm is 0.82, the conductive material is ITO, the refractive index at 550nm The refractive index is 1.92, and the film thickness is as follows:

[0025] The material of the first high refractive index layer is TiO2 with a thickness of 13±1nm; the material of the first low refractive index layer is SiO 2 , the thickness is 78±2nm; the material of the second high refractive index layer is TiO2, the thickness is 32±1nm; the material of the second low refractive index layer is SiO 2 , the thickness is 20±2nm; the metal material layer is Al, the thickness is 11±1nm; the material of the third low refractive index layer is SiO 2 , the thickness is 125±5nm; the conductive layer is ITO, the thickness is 25nm;

[0026] According to the above film structure and ...

Embodiment 3

[0027] Embodiment 3: In the film layer design process, the first high refractive index is TiO2, the second high refractive index is Nb2O5; the first low refractive index material is SiO2, and the second low refractive index material is SiOxNy, arranged by the listed materials All combinations can achieve the same reflectivity requirements.

[0028] The actual measurement data of the multifunctional reflective film data of the vehicle exterior mirror obtained in Example 1 is shown in Table 1 below.

[0029] The actual measurement data of the multifunctional reflective film data of the vehicle exterior mirror obtained in Example 2 are shown in Table 2 below.

[0030] When preparing the multifunctional reflective film for vehicle-mounted exterior mirrors described in the above embodiments, the first high-refractive index layer, the first low-refractive-index layer, and the second high-refractive-index layer are sequentially deposited on the glass substrate by magnetron sputtering...

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Abstract

The invention discloses a multi-functional reflective film of on-board exterior mirror and the preparation method. The reflective film comprises glass substrates piled in sequence, the first high refractive layer, the first low refractive layer, the second high refractive layer, the second low refractive layer, metal material layer, the third low refractive layer and conducting layer. The first high refractive layer and second high refractive layer are made from Ta2O5, TiO2 and Nb2O5, the first low refractive layer, the second low refractive layer and the third low refractive layer are made from MgF2, SiOxNy and SiO2, the metal material is made from Al and Ag, and the conducting layer is made from ITO and graphene. Inorganic material and conductive material are mixed reasonably. Vacuum magnetron sputtering deposition is used to produce adjustable reflective film used for on-board exterior mirror. Based on this, the film is connected with the heating system through the conductive coating. The mirror will be clean even in the Frost and snow weather, providing safety guarantee during driving.

Description

technical field [0001] The invention relates to the field of automobile mirrors, in particular to a multifunctional reflective film for a vehicle exterior mirror and a preparation method thereof. Background technique [0002] The early reflective film production used chemical reaction or electroplating method to deposit metal materials such as aluminum and silver on the glass to achieve the mirror reflection effect. However, the film layer is loose and porous, and is easily affected by the environment, which will cause the film layer to erode and affect the performance, and the specular reflectance is low, so it cannot be adjusted. The existing metal film is mainly obtained by evaporation or electrochemical reaction. Due to its high absorption rate, the film layer required for the reflective film is relatively thick, which is easily oxidized in the air, and the performance of the film layer changes quickly. In the middle, it is easy to cause the film layer to corrode and fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08
CPCG02B5/085
Inventor 江涛方凤军何建军洪蒙陈多
Owner YICHANG NANBO DISPLAY
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