阅读说明：本技术 一种汽车电致变色内后视镜第二面导电膜及其制备方法 (Second surface conductive film of automobile electrochromic inner rear-view mirror and preparation method thereof ) 是由 吴哲 于 2019-11-01 设计创作，主要内容包括：本发明公开了一种汽车电致变色内后视镜第二面导电膜及其制备方法,该导电膜包括：玻璃基板,具有相对的第一表面和第二表面,第一表面和玻璃基板的侧面之间形成倒边斜面；导电层,设置在玻璃基板的第一表面及倒边斜面上。本发明实施例提供的汽车电致变色内后视镜第二面导电膜及其制备方法,通过对玻璃基板的第一表面进行倒边斜面处理,避免了环形反射膜层和绝缘膜层的制备,从而降低了制作成本,使得该汽车电致变色内后视镜上的导电膜结构简单,原料成本低,导电性能好,制作更方便,生产成本也更低。(The invention discloses a second surface conductive film of an automobile electrochromic inside rear-view mirror and a preparation method thereof, wherein the conductive film comprises the following components: the glass substrate is provided with a first surface and a second surface which are opposite, and a chamfered inclined plane is formed between the first surface and the side surface of the glass substrate; and the conducting layer is arranged on the first surface and the chamfered inclined plane of the glass substrate. According to the second-side conductive film of the automobile electrochromic inside rear view mirror and the preparation method thereof, the first surface of the glass substrate is subjected to chamfering and slope processing, so that the preparation of an annular reflecting film layer and an insulating film layer is avoided, the manufacturing cost is reduced, and the conductive film on the automobile electrochromic inside rear view mirror is simple in structure, low in raw material cost, good in conductivity, more convenient to manufacture and lower in production cost.)

1. An electrochromic second-side conductive film for an interior rear-view mirror of an automobile, comprising:

the glass substrate is provided with a first surface and a second surface which are opposite, and a chamfered inclined plane is formed between the first surface and the side surface of the glass substrate;

and the conducting layer is arranged on the first surface and the chamfered inclined plane of the glass substrate.

2. The second conductive film for an electrochromic inside rear-view mirror according to claim 1, further comprising: and the bottom coating is arranged between the first surface of the glass substrate and the conductive layer.

3. The second conductive film for an electrochromic inside rear-view mirror according to claim 1, further comprising: and the conductive silver paste layer is arranged on the chamfered inclined plane of the glass substrate.

4. The second conductive film for an electrochromic inside rear-view mirror of claim 3, wherein a groove is formed on the chamfered slope, and the conductive silver paste layer is disposed in the groove and covers the conductive layer.

5. The conductive film according to claim 1, wherein the chamfered slope of the glass substrate is formed in the longitudinal direction of the first surface, the chamfered angle of the glass substrate is 25 ° to 65 °, and the chamfered depth is 0.5 mm to 1.5 mm.

6. The second conductive film for electrochromic inside rear-view mirror of claim 2, wherein the primer layer is made of SiO ₂The conducting layer is made of ITO, the thickness of the bottom layer is 5 nm-50 nm, and the thickness of the conducting layer is 10 nm-150 nm.

7. The second conductive film for an automobile electrochromic inside rear view mirror according to claim 4, wherein the depth of the groove is 0 to 0.2mm, the width of the conductive silver paste layer is 0.1 to 0.6mm, and the thickness of the conductive silver paste layer is 0.01 to 0.1 mm.

8. A preparation method of a second surface conductive film of an automobile electrochromic inside rear view mirror is characterized by comprising the following steps:

providing a glass substrate, and forming a chamfered inclined plane between a first surface and a side surface of the glass substrate;

cleaning and drying the glass substrate;

and forming a conductive layer on the first surface and the chamfered inclined plane of the glass substrate.

9. The method for preparing the second conductive film of the electrochromic inside rear view mirror of claim 8, wherein before forming the conductive layer on the first surface and the chamfered surface of the glass substrate, the method further comprises:

forming a bottom layer on the first surface and the chamfered inclined plane of the glass substrate, wherein the bottom layer is made of SiO ₂The conducting layer is made of ITO, and the chamfered inclined plane of the glass substrate is formed in the long side direction of the first surface.

10. The method for preparing the conductive film on the second surface of the electrochromic inside rear-view mirror for automobiles according to claim 8, further comprising:

and forming a conductive silver paste layer on the chamfered inclined plane of the glass substrate.

11. The method for preparing the second conductive film of the electrochromic inside rear view mirror of claim 8, wherein before forming the conductive layer on the first surface and the chamfered surface of the glass substrate, the method further comprises:

and forming a groove on the chamfered slope of the glass substrate.

12. The method for preparing the conductive film on the second surface of the electrochromic inside rear-view mirror for automobiles according to claim 11, further comprising:

and forming a conductive silver paste layer in the groove, wherein the conductive silver paste layer covers the conductive layer.

Technical Field

The invention relates to the technical field of automobile electrochromic inside rear-view mirrors, in particular to a second surface conductive film of an automobile electrochromic inside rear-view mirror and a preparation method thereof.

Background

At present, most of automobile rearview mirrors basically have the mirror reflection function, and when the automobile runs at night, if the reflection of headlights of the rear automobile is too strong, the drivers can be briefly dizzy, so that accidents frequently happen. Therefore, based on the requirement of safety performance, the emergence of automatic anti-dazzle technology and the birth of dimming intelligent rearview mirror products are promoted. The most remarkable characteristic of the dimming rearview mirror is embodied in a dimming function, namely, the electronic induction system of the rearview mirror automatically adjusts the reflectivity of the rearview mirror according to the intensity of ambient light, dynamic dimming is realized, the influence of glare is reduced, and the driving safety is improved.

The existing dimming technologies comprise electrochromic technologies which can meet the requirements of vehicle-mounted product performance, service life and environment measurement, have high response speed and high safety performance and are produced in large scale. The basic structure of the electrochromic inside rear-view mirror formed according to the electrochromic technology is that a glass box similar to a liquid crystal box is made of two pieces of conductive soda-lime glass with the thickness of about 2mm, conductive and color-changing solution or gel is filled in the middle of the glass box, and finally the glass box is sealed. The four surfaces of the conductive glass middle front sheet (first layer) and the conductive glass back sheet (second layer) are sequentially a first surface, a second surface, a third surface and a fourth surface from front to back.

Disclosure of Invention

In view of this, embodiments of the present invention provide a conductive film on a second surface of an electrochromic interior rear-view mirror of an automobile and a method for manufacturing the same, so as to solve the technical problems of more film layers, complex production process, and low production efficiency of the film layer structure on the second surface of the electrochromic interior rear-view mirror in the prior art.

The technical scheme provided by the invention is as follows:

the first aspect of the embodiments of the present invention provides a second side conductive film of an electrochromic inside rear-view mirror for an automobile, where the conductive film includes: the glass substrate is provided with a first surface and a second surface which are opposite, and a chamfered inclined plane is formed between the first surface and the side surface of the glass substrate; and the conducting layer is arranged on the first surface and the chamfered inclined plane of the glass substrate.

Optionally, the second conductive film of the electrochromic inside rear view mirror of the automobile further comprises: and the bottom coating is arranged between the first surface of the glass substrate and the conductive layer.

Optionally, the second conductive film of the electrochromic inside rear view mirror of the automobile further comprises: and the conductive silver paste layer is arranged on the chamfered inclined plane of the glass substrate.

Optionally, a groove is formed in the chamfered slope, and the conductive silver paste layer is arranged in the groove and covers the conductive layer.

Optionally, the chamfered slope of the glass substrate is formed in the long side direction of the first surface, the chamfered angle of the glass substrate is 25 ° to 65 °, and the chamfered depth is 0.5 mm to 1.5 mm.

Optionally, the material of the bottom layer is SiO ₂The conducting layer is made of ITO, the thickness of the bottom layer is 5 nm-50 nm, and the thickness of the conducting layer is 10 nm-150 nm.

Optionally, the depth of the groove is 0-0.2 mm, the width of the conductive silver paste layer is 0.1-0.6 mm, and the thickness of the conductive silver paste layer is 0.01-0.1 mm.

The second aspect of the embodiments of the present invention provides a method for preparing a second conductive film of an electrochromic inside rear-view mirror of an automobile, where the method includes the following steps: providing a glass substrate, and forming a chamfered inclined plane between a first surface and a side surface of the glass substrate; cleaning and drying the glass substrate; and forming a conductive layer on the first surface and the chamfered inclined plane of the glass substrate.

Optionally, before forming the conductive layer on the first surface and the chamfered slope of the glass substrate, the method further includes: forming a bottom layer on the first surface and the chamfered inclined plane of the glass substrate, wherein the bottom layer is made of SiO ₂The conducting layer is made of ITO, and the chamfered inclined plane of the glass substrate is formed in the long side direction of the first surface.

Optionally, the preparation method of the conductive film on the second surface of the electrochromic inside rear view mirror of the automobile further comprises the following steps: and forming a conductive silver paste layer on the chamfered inclined plane of the glass substrate.

Optionally, before forming the conductive layer on the first surface and the chamfered slope of the glass substrate, the method further includes: and forming a groove on the chamfered slope of the glass substrate.

Optionally, the preparation method of the conductive film on the second side of the electrochromic inside rear view mirror of the automobile further comprises: and forming a conductive silver paste layer in the groove, wherein the conductive silver paste layer covers the conductive layer.

The technical scheme of the invention has the following advantages:

according to the second-side conductive film of the automobile electrochromic inside rear view mirror and the preparation method thereof, the first surface of the glass substrate is subjected to chamfering and slope processing, so that the preparation of an annular reflecting film layer and an insulating film layer is avoided, the manufacturing cost is reduced, and the conductive film on the automobile electrochromic inside rear view mirror is simple in structure, low in raw material cost, good in conductivity, more convenient to manufacture and lower in production cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a block diagram of a second conductive film of an electrochromic inside rear-view mirror according to an embodiment of the present invention;

FIG. 2 is a block diagram of a second conductive film of an electrochromic inside rear view mirror for a vehicle according to another embodiment of the present invention;

FIG. 3 is a flow chart of a method for manufacturing a second conductive film of an electrochromic inside rear-view mirror according to an embodiment of the invention.

Reference numerals:

1. a glass substrate; 11. a first surface; 12. a side surface; 13. a second surface; 14. chamfering an inclined plane; 15. a groove; 2. priming a bottom layer; 3. a conductive layer; 4. and a conductive silver paste layer.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

An embodiment of the present invention provides a second conductive film for an electrochromic interior rear-view mirror of an automobile, as shown in fig. 1, the second conductive film includes: a glass substrate 1 having a first surface 11 and a second surface 13 opposite to each other, wherein a chamfered slope 14 is formed between the first surface 11 and the side surface 12; and a conductive layer 3 disposed on the first surface 11 and the chamfered surface 14 of the glass substrate 1.

According to the conductive film on the second surface of the automobile electrochromic inside rear view mirror provided by the embodiment of the invention, the preparation of the annular reflecting film layer and the insulating film layer is avoided by performing the beveling treatment on the first surface of the glass substrate, so that the manufacturing cost is reduced, and the conductive film on the automobile electrochromic inside rear view mirror has the advantages of simple structure, low raw material cost, good conductivity, more convenience in manufacturing and lower production cost.

As an optional implementation manner in this embodiment of the present invention, as shown in fig. 1, the second conductive film of the electrochromic inside rear view mirror of the automobile may further include: and the priming layer 2 is arranged between the first surface 11 of the glass substrate 1 and the conductive layer 3. Specifically, the primer layer 2 may cover the first surface 11 and the chamfered surface 14 of the glass substrate 1. In the embodiment, the priming layer is arranged between the glass substrate and the conducting layer, so that the sodium ions on the surface of the glass can be effectively prevented from escaping and the middle EC liquid crystal body causes reaction to influence the color changing effect, and meanwhile, the adhesive force of the conducting layer is further improved.

As an optional implementation manner in this embodiment of the present invention, as shown in fig. 1, the second conductive film of the electrochromic inside rear view mirror of the automobile may further include: the conductive silver paste layer 4, specifically, the conductive silver paste layer 4 may be disposed on the chamfered surface 14 of the glass substrate 1. In the embodiment, the conductive silver paste layer is arranged on the chamfered slope of the glass substrate, so that the chamfered slope can also play a role in conducting electricity, and meanwhile, the resistance of edge contact can be reduced to be lower than 10 ohms. In addition, in the prior art, the conductive resin is etched to be in contact with corresponding electrodes, but the reflective layer and the conductive film layer are etched together easily in the preparation process, so that short circuits are increased.

Alternatively, as shown in fig. 2, a groove 15 may be provided on the chamfered surface 14, and the conductive silver paste layer 4 may be provided in the groove 15 and cover the conductive layer 3.

Alternatively, the chamfered surface 14 of the glass substrate 1 may be formed long on the first surface 11In the edge direction, the chamfering angle of the glass substrate 1 can be 25-65 degrees, and the chamfering depth can be 0.5-1.5 mm. Wherein, the bottom layer 2 can be SiO ₂The material, the conductive layer 3, may be selected from ITO material. The present invention is only illustrative of the materials of the priming layer and the conductive layer, and other materials having the same function may be selected for the priming layer and the conductive layer, which is not limited in the present invention.

Alternatively, the thickness of the primer layer 2 may be 5nm to 50nm, and the thickness of the conductive layer 3 may be 10nm to 150 nm. The depth of the groove 15 can be 0-0.2 mm, the width of the conductive silver paste layer can be 0.1-0.6 mm, and the thickness can be 0.01-0.1 mm. The conductive silver paste layer 4 may be silver paste with a purity of 90% or more.

The embodiment of the invention also provides a preparation method of the second surface conductive film of the automobile electrochromic inside rear view mirror, as shown in fig. 3, the preparation method comprises the following steps:

step S101: providing a glass substrate, and forming a chamfered inclined plane between a first surface and a side surface of the glass substrate; specifically, the chamfered slope may be formed by a laser cutting method, or other methods may be used, which is not limited in the present invention.

Step S102: the glass substrate is washed and dried.

Step S103: and forming a conductive layer on the first surface and the chamfered inclined plane of the glass substrate. Specifically, a conductive layer may be formed on a glass substrate by magnetron sputtering or thermal evaporation. Wherein, when the coating forms the conducting layer, argon can be used as working gas in a vacuum environment, and the vacuum environment can be 1.5 to 10 ^-3～2.5*10 ^-3Pa。

According to the preparation method of the second-side conductive film of the automobile electrochromic inside rear view mirror, provided by the embodiment of the invention, the preparation of the annular reflecting film layer and the insulating film layer is avoided by performing chamfering and beveling treatment on the first surface of the glass substrate, so that the manufacturing cost is reduced, and the conductive film on the automobile electrochromic inside rear view mirror has the advantages of simple structure, low raw material cost, good conductivity, more convenient manufacturing and lower production cost.

Optionally, before forming the conductive layer on the first surface of the glass substrate, the method further includes:

forming a bottom layer on the first surface and the chamfered inclined plane of the glass substrate, wherein the bottom layer is made of SiO ₂The conducting layer is made of ITO, and the chamfered inclined plane of the glass substrate is formed in the long side direction of the first surface. In the embodiment, the priming layer is arranged between the glass substrate and the conducting layer, so that the sodium ions on the surface of the glass can be effectively prevented from escaping and the middle EC liquid crystal body causes reaction to influence the color changing effect, and meanwhile, the adhesive force of the conducting layer is further improved.

Optionally, the preparation method of the conductive film on the second surface of the electrochromic inside rear view mirror of the automobile further includes:

and forming a conductive silver paste layer on the chamfered inclined plane of the glass substrate. Specifically, after the conductive layer is formed, the glass substrate may be subjected to a drying process, and conductive silver paste coating printing may be performed on the chamfered slope using an automatic printing apparatus, thereby forming a conductive silver paste layer.

Optionally, the conductive silver paste layer may be prepared by the following method, specifically, before the forming the conductive layer on the first surface and the chamfered slope of the glass substrate, the method further includes: and forming a groove on the chamfered inclined plane of the glass substrate. And then sequentially forming a priming layer and a conducting layer on the chamfered slope, and finally forming a conducting silver paste layer in the groove area.

In the embodiment, the conductive silver paste layer is arranged on the chamfered slope of the glass substrate, so that the chamfered slope can also play a role in conducting electricity, and meanwhile, the resistance of edge contact can be reduced to be lower than 10 ohms. In addition, in the prior art, the conductive resin is etched to be in contact with corresponding electrodes, but the reflective layer and the conductive film layer are etched together easily in the preparation process, so that short circuits are increased.