EC anti-dazzle rearview mirror with uniform color change
By setting an annular electrode and an electrolyte layer on the conductive glass of the anti-glare rearview mirror, the problem of uneven color discoloration during long-term power-up use is solved, and the uniform color discoloration and clear field of view of the rearview mirror lenses are achieved, which reduces the safety hazards of driving at night.
Patent Information
- Application Number
- CN202520807285.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2035-04-27
AI Technical Summary
The existing anti-glare rearview mirrors have uneven color discoloration problems during long-term power-up, which affects the visual effect and increases safety risks of driving at night.
The EC anti-glare rearview mirror designed with annular electrode reduces the voltage difference in the conductive surface by providing annular electrode on the first conductive glass, and through the design of the electrolyte layer, the migration ability of the active substance is reduced to ensure uniform voltage distribution.
It effectively reduces the probability of uneven color discoloration, ensures that the color discoloration of the rearview mirror lenses is uniform, provides the driver with a clear and stable rear view, and reduces safety hazards during driving.
Smart Images
Figure CN222952567U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile rearview mirrors, in particular to an EC anti-glare rearview mirror with uniform color change. Background Art
[0002] In the field of automobile safe driving, anti-glare rearview mirrors are important components to ensure nighttime driving safety. With the continuous development of automobile technology, drivers have increasingly higher requirements for the performance of anti-glare rearview mirrors, among which color change uniformity has become one of the key indicators.
[0003] The anti-glare rearview mirror in the prior art has a serious problem of uneven color change during long-term continuous power-on use. The main structure of the anti-glare rearview mirror in the prior art is composed of two pieces of conductive glass and a color-changing liquid in the middle. The external circuit controls the voltage on the glass through two electrodes to achieve color change; however, due to the high resistance of ITO glass, a voltage difference will be generated in the area near the electrode and far away from the electrode. Under long-term power-on conditions, this voltage difference will cause part of the color-changing substance to migrate toward the electrode, which may cause uneven concentration of the color-changing components on the lens, and finally uneven color change, which not only affects the visual effect of the rearview mirror, making it impossible for the driver to clearly observe the road conditions behind, but also may distract the driver's attention and increase the safety risks of driving at night. Summary of the invention
[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and to propose an EC anti-glare rearview mirror with uniform color change.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An EC anti-glare rearview mirror with uniform color change comprises a shell connected to a bracket, and further comprises:
[0007] The first conductive glass and the second conductive glass are both fixedly connected in the housing;
[0008] An electrolyte layer is provided between the first conductive glass and the second conductive glass;
[0009] The first conductive glass is connected to an electrode portion;
[0010] The electrode portion is an annular electrode, which is a closed annular structure or an annular structure with a plurality of gaps. When there are a plurality of gaps, the total length of the diameters of the plurality of gaps is less than 40% of the circumference of the annular electrode.
[0011] Furthermore, the electrode portion is at least one of sputtered metals selected from aluminum, silver and chromium.
[0012] Furthermore, the electrode portion is electroplated with at least one of copper and silver.
[0013] Furthermore, the thickness of the electrode portion is 9-11 um.
[0014] Furthermore, the width of the electrode portion is 1-1.5 mm.
[0015] Preferably, the electrolyte layer has a thickness of 50-200 μm.
[0016] Compared with the prior art, the utility model provides an EC anti-glare rearview mirror with uniform color change, which has the following beneficial effects:
[0017] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model reduces the voltage difference of the conductive surface of the first conductive glass by arranging an electrode part on the first conductive glass; the annular structure design of the electrode part makes the voltage distribution on the glass substrate more uniform, reduces the migration power of the color-changing material due to the voltage difference, thereby greatly reducing the probability of uneven color change, ensuring that the color change of the rearview mirror lens is uniform during long-term power-on use, providing the driver with a clear and stable rear view, and effectively reducing safety hazards during driving. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural schematic diagram of an EC anti-glare rearview mirror with uniform color change proposed by the utility model;
[0019] Figure 2 The utility model provides a schematic structural diagram of a first conductive glass and a second conductive glass in a uniformly discolored EC anti-glare rearview mirror.
[0020] In the figure: 1. Shell; 101. First conductive glass; 102. Second conductive glass; 103. Electrolyte layer; 2. Bracket; 3. Electrode part; 4. Sealant. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0022] Example 1
[0023] Reference Figure 1-Figure 2 , an EC anti-glare rearview mirror with uniform color change, comprising a housing 1 connected to a bracket 2, and further comprising:
[0024] The first conductive glass 101 and the second conductive glass 102 are both fixedly connected in the housing 1;
[0025] An electrolyte layer 103 is disposed between the first conductive glass 101 and the second conductive glass 102 .
[0026] The first conductive glass 101 is connected to the electrode portion 3 .
[0027] The electrode portion 3 is an annular electrode, which is a closed annular structure or an annular structure with a plurality of gaps. When there are a plurality of gaps, the total length of the diameters of the plurality of gaps is less than 40% of the circumference of the annular electrode.
[0028] It should be noted that the active material in the electrolyte layer 103 is fixed or has reduced mobility by bonding;
[0029] By reducing the migration ability of the active material in the electrolyte layer 103, the occurrence of uneven color change can be effectively reduced.
[0030] It should also be noted that the electrolyte layer 103 is in a solid gel state, and a sealant 4 is connected between the first conductive glass 101 and the second conductive glass 102 to seal the electrolyte layer 103 and reduce the possibility of leakage of the electrolyte layer 103 .
[0031] The bonding method includes one or more of chemical bonding, hydrogen bonding, and charge attraction.
[0032] The electrode portion 3 is a ring-shaped electrode.
[0033] The electrode portion 3 is made of sputtered metal aluminum and chromium.
[0034] The thickness of the electrode part 3 is 9-11 um.
[0035] The width of the electrode portion 3 is 1-1.5 mm.
[0036] During the specific sputtering treatment, a sputtering process is used at the edge of the first conductive glass 101 to first sputter a 5um thick aluminum layer and then sputter a 5um thick chromium layer. The electrode width is controlled at 1.2mm to form a ring electrode as the electrode portion 3.
[0037] Example 2
[0038] Reference Figure 1-Figure 2 , an EC anti-glare rearview mirror with uniform color change, which is basically the same as Example 1, except that: the electrode part 3 is a silver sputtering target.
[0039] During the specific sputtering treatment, a silver layer with a thickness of 10 um is sputtered on the edge of the first conductive glass 101 by using a sputtering process, and the electrode width is controlled at 1.2 mm; a ring electrode is formed as the electrode portion 3 .
[0040] Example 3
[0041] Reference Figure 1-Figure 2 , an EC anti-glare rearview mirror with uniform color change, which is basically the same as Example 1, except that: the electrode portion 3 is electroplated copper, and the electrode portion 3 is an annular electrode with a certain gap, and so the total length of the gap is less than 40% of the circumference of the annular electrode area.
[0042] The present application reduces the voltage difference on the conductive surface of the first conductive glass 101 by setting an electrode portion 3 on the first conductive glass 101; the annular structure design of the electrode portion 3 makes the voltage distribution on the glass substrate more uniform, reduces the migration power of the color-changing substance due to the voltage difference, and thus greatly reduces the probability of uneven color change, ensuring that the color change of the rearview mirror lens is uniform during long-term power-on use, providing the driver with a clear and stable rear view.
[0043] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An EC anti-glare rearview mirror with uniform color change, comprising a housing (1) connected to a bracket (2), characterized in that: Also includes: The first conductive glass (101) and the second conductive glass (102) are both fixedly connected in the housing (1); An electrolyte layer (103) is provided between the first conductive glass (101) and the second conductive glass (102); An electrode portion (3) is connected to the first conductive glass (101); The electrode portion (3) is an annular electrode, which is a closed annular structure or an annular structure with a plurality of gaps. When there are a plurality of gaps, the total length of the diameters of the plurality of gaps is less than 40% of the circumference of the annular electrode.
2. The EC anti-glare rearview mirror with uniform color change according to claim 1, characterized in that: The electrode portion (3) is at least one of sputtered metals selected from aluminum, silver and chromium.
3. The EC anti-glare rearview mirror with uniform color change according to claim 1, characterized in that: The electrode portion (3) is at least one of electroplated copper and silver.
4. The EC anti-glare rearview mirror with uniform color change according to claim 3, characterized in that: The thickness of the electrode portion (3) is 9-11 um.
5. The EC anti-glare rearview mirror with uniform color change according to claim 1, characterized in that: The width of the electrode portion (3) is 1-1.5 mm.
6. The EC anti-glare rearview mirror with uniform color change according to claim 1, characterized in that: The electrolyte layer (103) has a thickness of 50-200 μm.