Anti-dazzling rearview mirror and laser processing method for reflection conducting layer of anti-dazzling rearview mirror

Abstract

The anti-dazzling electrochromic rearview mirror comprises a first substrate layer, a second substrate layer, an electrochromic layer, a positive electrode area and a negative electrode area, the electrochromic layer is located between the first substrate layer and the second substrate layer, one end of the electrochromic layer is located in the positive electrode area, and the other end of the electrochromic layer is located in the negative electrode area. A transparent conductive layer is arranged between the first substrate layer and the electrochromic layer, a reflective conductive layer is arranged between the second substrate layer and the electrochromic layer, the reflective conductive layer is connected with a negative electrode, the transparent conductive layer is connected with a positive electrode, and sealant is fixedly arranged on the end face of the electrochromic layer. At least one laser etching line is arranged on the reflective conductive layer in the positive electrode area, and a shielding insulating layer is arranged on the transparent conductive layer in the negative electrode area. According to the invention, the production efficiency and the weather resistance of the product can be greatly improved while the insulation effect can be ensured.

Description

Technical Field

[0001] The present invention relates to the field of automobile parts, and in particular to an anti-glare rearview mirror and a laser processing method for a reflective conductive layer thereof. Background Art

[0002] The main structure of the anti-glare rearview mirror includes a first substrate, a second substrate, a transparent conductive layer, a reflective conductive layer and an electrochromic layer. Among them, the transparent conductive layer and the reflective conductive layer deposited on the first and second substrates serve as the positive and negative electrodes of the device respectively. Since there is an area where the positive and negative electrodes are connected by a conductive component (generally a conductive glue), the two conductive layers of the positive and negative electrodes need to be subjected to different insulation treatments respectively. At present, the insulation treatment method for the reflective conductive layer is generally to laser-etch all the areas of the reflective conductive layer that can be contacted by the silver glue. However, due to the large area, the process time is long, which affects production efficiency; at the same time, conventional laser etching cannot clean the coating on the glass surface, and there are always trace amounts of metal particles remaining, which affects the adhesion performance of the sealant and the conductive glue. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an anti-glare rearview mirror and a laser processing method for its reflective conductive layer, which can ensure the insulation effect while greatly improving the production efficiency and weather resistance of the product.

[0004] In order to achieve the above-mentioned purpose of the invention, the technical solution of the present invention is an anti-glare electrochromic rearview mirror, comprising a first base layer, a second base layer, an electrochromic layer, a positive electrode region, and a negative electrode region, the electrochromic layer being located between the first base layer and the second base layer, one end of the electrochromic layer being located in the positive electrode region, and the other end being located in the negative electrode region, a transparent conductive layer being arranged between the first base layer and the electrochromic layer, a reflective conductive layer being arranged between the second base layer and the electrochromic layer, the reflective conductive layer being connected to the negative electrode, the transparent conductive layer being connected to the positive electrode, a sealant being fixedly arranged on the end face of the electrochromic layer, at least one laser etching line being arranged on the reflective conductive layer in the positive electrode region, the laser etching line insulating the reflective conductive layer from the positive electrode, and a shielding insulating layer being provided on the transparent conductive layer in the negative electrode region, the shielding insulating layer insulating the transparent conductive layer from the negative electrode.

[0005] In a preferred technical solution, the cross-sectional area of the electrochromic layer is smaller than that of the reflective conductive layer and the transparent conductive layer, and the sealant bonds the electrochromic layer, the reflective conductive layer, and the transparent conductive layer.

[0006] According to a further technical solution, the end surface of the sealant is provided with conductive glue, the positive electrode is fixed on the conductive glue in the positive electrode area, and the negative electrode is fixed on the conductive glue in the negative electrode area.

[0007] According to a further technical solution, one end of the sealant and the conductive adhesive in the negative electrode region are both fixed to the shielding insulating layer.

[0008] According to a further technical solution, the conductive glue in the positive electrode area is fixed to the outside of the laser etching line.

[0009] According to a further technical solution, the distance from the outermost laser etching line to the end surface of the reflective conductive layer is greater than the thickness of the conductive adhesive.

[0010] A laser processing method for a reflective conductive layer of a glare rearview mirror comprises the following steps:

[0011] Step 1: coating a reflective conductive layer on the second substrate layer;

[0012] Step 2: using laser to perform laser etching along a portion of the edge of the reflective conductive layer;

[0013] Step 3: Laser etching to form a laser etching line, which can be a single laser etching line or multiple parallel laser etching lines, and the laser etching line cuts off the connection between the reflective conductive layer and the positive electrode;

[0014] Step 4: Leave the negative electrode area unetched.

[0015] In the above technical solution, the laser etching line is ring-shaped along the edge of the reflective conductive layer and is disconnected at the negative electrode to form an escape area to ensure the conductive effect between the negative electrode conductive glue and the working area of the reflective conductive layer.

[0016] The advantages of the present invention are:

[0017] The introduction of laser etching reduces the required etching area, reducing the marking area width from 2mm to 0.2mm and the laser etching time from approximately 20s to approximately 3s. This significantly improves the production efficiency of the process while minimizing damage to the reflective conductive layer and enhancing the overall weather resistance of the anti-glare rearview mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 Cross-sectional view at AA in the middle.

[0022] Among them: 1. First base layer; 2. Electrochromic layer; 3. Second base layer; 4. Transparent conductive layer; 5. Reflective conductive layer; 6. Negative electrode; 7. Positive electrode; 8. Laser etching line; 9. Shielding insulating layer; 10. Conductive adhesive; 11. Sealant; 12. Negative electrode area. DETAILED DESCRIPTION

[0023] Example: Figure 1 、 2 As shown, an anti-glare electrochromic rearview mirror includes a first substrate layer 1, a second substrate layer 3, an electrochromic layer 2, a positive electrode region, and a negative electrode region. The electrochromic layer 2 is located between the first substrate layer 1 and the second substrate layer 3, one end of the electrochromic layer 2 is located in the positive electrode region, and the other end is located in the negative electrode region. A transparent conductive layer 4 is provided between the first substrate layer 1 and the electrochromic layer 2, and a reflective conductive layer 5 is provided between the second substrate layer 3 and the electrochromic layer 2. The reflective conductive layer 5 is connected to the negative electrode 6, and the transparent conductive layer 4 is connected to the positive electrode 7. A sealant 11 is fixedly provided on the end face of the electrochromic layer 2, and at least one laser etching line 8 is provided on the reflective conductive layer 5 in the positive electrode region. The laser etching line 8 insulates the reflective conductive layer 5 from the positive electrode 7. A shielding insulating layer 9 is provided on the transparent conductive layer 4 in the negative electrode region. The shielding insulating layer 9 insulates the transparent conductive layer 4 from the negative electrode 6.

[0024] The reflective conductive layer 5 is a coating formed directly on the second substrate layer 3. Laser etching is performed along a portion of the edge of the reflective conductive layer 5. Laser etching forms laser etched lines 8, which can be single laser etched lines 8 or multiple parallel laser etched lines 8. Laser etched lines 8 form a ring along the edge of the reflective conductive layer 5, leaving the negative electrode area unetched.

[0025] The cross-sectional area of the electrochromic layer 2 is smaller than that of the reflective conductive layer 5 and the transparent conductive layer 4 . The sealant 11 bonds the electrochromic layer 2 , the reflective conductive layer 5 and the transparent conductive layer 4 .

[0026] Conductive adhesive 10 is provided on the end surface of the sealant 11 , the positive electrode 7 is fixed on the conductive adhesive 10 in the positive electrode area, and the negative electrode 6 is fixed on the conductive adhesive 10 in the negative electrode area.

[0027] One end of the sealant 11 and the conductive adhesive 10 in the negative electrode region are fixed to the shielding insulating layer 9 to ensure the insulation between the transparent conductive layer 4 and the negative electrode 6.

[0028] The conductive adhesive 10 in the positive electrode area is fixed outside the laser etching line 8 to ensure the insulation between the reflective conductive layer 5 and the positive electrode 7.

[0029] The distance between the outermost laser etching line 8 and the end surface of the reflective conductive layer 5 is greater than the thickness of the conductive adhesive 10 .

[0030] This embodiment has a simple structure and effectively optimizes the area that needs to be etched. By introducing laser etching, the area that needs to be etched is reduced, which greatly improves the production efficiency of this process. At the same time, the damage to the surface of the reflective conductive layer 5 is minimized, so that the overall weather resistance of the anti-glare rearview mirror is also improved.

Claims

1. An anti-glare electrochromic rearview mirror, comprising a first substrate layer, a second substrate layer, an electrochromic layer, a positive electrode region, and a negative electrode region, wherein the electrochromic layer is located between the first and second substrate layers, one end of the electrochromic layer is located in the positive electrode region, and the other end is located in the negative electrode region, a transparent conductive layer is disposed between the first substrate layer and the electrochromic layer, a reflective conductive layer is disposed between the second substrate layer and the electrochromic layer, the reflective conductive layer is connected to the negative electrode, and the transparent conductive layer is connected to the positive electrode, and a sealant is fixed to the end surface of the electrochromic layer, characterized in that: At least one laser etching line is provided on the reflective conductive layer in the positive electrode area, and the laser etching line insulates the reflective conductive layer from the positive electrode. The transparent conductive layer in the negative electrode area is provided with a shielding insulating layer, and the shielding insulating layer insulates the transparent conductive layer from the negative electrode.

2. The anti-glare electrochromic rearview mirror according to claim 1, characterized in that: The cross-sectional area of the electrochromic layer is smaller than that of the reflective conductive layer and the transparent conductive layer, and the sealant adheres the electrochromic layer, the reflective conductive layer, and the transparent conductive layer.

3. The anti-glare electrochromic rearview mirror according to claim 2, characterized in that: Conductive glue is provided on the end surface of the sealant, the positive electrode is fixed on the conductive glue in the positive electrode area, and the negative electrode is fixed on the conductive glue in the negative electrode area.

4. The anti-glare electrochromic rearview mirror according to claim 3, characterized in that: One end of the sealant and the conductive adhesive in the negative electrode region are both fixed to the shielding insulating layer.

5. The anti-glare electrochromic rearview mirror according to claim 4, characterized in that: The conductive glue in the positive electrode area is fixed outside the laser etching line.

6. The anti-glare electrochromic rearview mirror according to claim 5, characterized in that: The distance between the outermost laser etching line and the end surface of the reflective conductive layer is greater than the thickness of the conductive adhesive.

7. A laser processing method for the reflective conductive layer of a glare rearview mirror, characterized in that: Contains the following steps, Step 1: coating a reflective conductive layer on the second substrate layer; Step 2: using laser to perform laser etching along a portion of the edge of the reflective conductive layer; Step 3: Laser etching to form a laser etching line, which can be a single laser etching line or multiple parallel laser etching lines, and the laser etching line cuts off the connection between the reflective conductive layer and the positive electrode; Step 4: Leave the negative electrode area unetched.

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