Vehicle-mounted rearview mirror and cover plate thereof

Abstract

The utility model discloses a vehicle-mounted rearview mirror and a cover plate thereof. The cover plate of the vehicle-mounted rearview mirror comprises a visible area and a frame area. The visible area is transparent and is used for correspondingly attaching a display screen to the back surface of the visible area; the display screen comprises a mirror-like silver optical film attached to the upper surface of the display screen. A semi-transparent and semi-reflective film is arranged on the back face of the frame area, and an ink layer is arranged on the semi-transparent and semi-reflective film. The semi-transparent and semi-reflective film meets the condition that the sum of corresponding variances of Lab value parameters of the semi-transparent and semi-reflective film and the mirror-like silver optical film is smaller than or equal to 4. According to the vehicle-mounted rearview mirror cover plate, the rearview effect of the vehicle-mounted rearview mirror can be effectively improved, the driving safety can be improved, the whole product is more attractive, and the user experience can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted display technology, and in particular to a vehicle-mounted rearview mirror and a cover plate thereof. Background Art

[0002] With the development of electronic rearview mirrors, users require that the vehicle-mounted rearview mirror should have a display function while being able to see the vehicle behind clearly. Therefore, the vehicle-mounted rearview mirror combined with a display screen is very popular. In the related art, the vehicle-mounted rearview mirror is usually coated with a semi-transparent silver composite film on the upper surface of the display screen, and a glass cover is attached to the outside of the display screen for protection. However, the vehicle-mounted rearview mirror usually has a frame area with a large color difference from the visible area, which not only affects the rearview effect and is not conducive to driving safety, but also affects the overall appearance of the vehicle-mounted rearview mirror.

[0003] Based on this, how to design a vehicle-mounted rearview mirror and its cover plate to improve the rear-view effect and product appearance has become an urgent problem to be solved in the industry. Summary of the invention

[0004] In order to solve at least one problem existing in the prior art, the purpose of the present application is to provide a vehicle-mounted rearview mirror and a cover plate thereof, which can not only effectively improve the rear-view effect of the vehicle-mounted rearview mirror, which is conducive to improving driving safety, but also make the overall product more beautiful and help to improve user experience.

[0005] To achieve the above-mentioned purpose, the vehicle-mounted rearview mirror cover provided in the present application includes a visible area and a frame area;

[0006] The visible area is transparent and is used to be attached to a display screen on the back of the visible area; wherein the display screen includes a mirror silver optical film attached to the upper surface of the display screen;

[0007] The back of the frame area is provided with a semi-transparent and semi-reflective film, and an ink layer is provided on the semi-transparent and semi-reflective film; the semi-transparent and semi-reflective film meets the following conditions:

[0008]

[0009] Among them, L1, a1 and b1 are respectively the brightness parameter value, red-green tone parameter value and yellow-blue tone parameter value in the Lab value parameters of the semi-transparent and semi-reflective film; L2, a2 ​​and b2 are respectively the brightness parameter value, red-green tone parameter value and yellow-blue tone parameter value in the Lab value parameters of the mirror silver optical film.

[0010] Optionally, the semi-transmissive and semi-reflective film includes a first SiO2 layer, a first Nb2O5 layer, a second SiO2 layer, a second Nb2O5 layer, a third SiO2 layer, a third Nb2O5 layer, and a fourth SiO2 layer stacked in sequence.

[0011] Further optionally, the reflectivity of the semi-transmissive and semi-reflective film ranges from 48% to 50%.

[0012] Optionally, the semi-transparent and semi-reflective membrane has a thickness ranging from 200 nm to 300 nm.

[0013] Optionally, the semi-transmissive and semi-reflective film is a multilayer film prepared by sputtering.

[0014] Optionally, the ink layer is a black ink layer.

[0015] Further optionally, the ink layer comprises a three-layer ink stack.

[0016] Optionally, the ink layer has a thickness of 10 μm-15 μm.

[0017] Optionally, the ink layer is an ink layer prepared by screen printing.

[0018] To achieve the above purpose, the present application also provides a vehicle-mounted rearview mirror, comprising:

[0019] The vehicle-mounted rearview mirror cover as described above; and,

[0020] The display screen is a display screen corresponding to the vehicle-mounted rearview mirror cover plate, and includes a mirror silver optical film attached to the upper surface of the display screen.

[0021] The vehicle rearview mirror and its cover plate of the present application are provided with a laminate of a semi-transparent and semi-reflective film and an ink layer on the back of the cover plate frame area, and a mirror silver optical film is pasted on the upper surface of the display screen to be assembled, and the condition is ensured that the sum of the corresponding variances of the Lab value parameters of the semi-transparent and semi-reflective film and the mirror silver optical film is less than or equal to 4, so as to achieve an integrated mirror effect with consistent colors in the frame area and the visible area. As a result, not only can the rearview effect of the vehicle rearview mirror be effectively improved, which is conducive to improving driving safety, but also the overall product is more beautiful, which helps to improve user experience.

[0022] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0024] Figure 1 This is a schematic structural diagram of a vehicle rearview mirror cover according to an embodiment of the present application;

[0025] Figure 2 for Figure 1AA section view of the vehicle rearview mirror cover;

[0026] Figure 3 Schematic diagram of the semi-transparent and semi-reflective membrane stack structure according to an embodiment of the present application.

[0027] Specifically, the following reference numerals are included:

[0028] Vehicle rearview mirror cover-100; visible area-20; frame area-30; semi-transparent and semi-reflective film-31; ink layer-32. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0030] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0031] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0032] Example 1

[0033] like Figure 1-Figure 3 As shown, the vehicle-mounted rearview mirror cover 100 includes a viewing area 20 and a frame area 30 .

[0034] The viewing area 20 is transparent, and is used to be attached to a display screen on the back side of the viewing area 20. The display screen includes a mirror silver optical film attached to the upper surface of the display screen.

[0035] A semi-transparent and semi-reflective film 31 is provided on the back of the frame area 30, and an ink layer 32 is provided on the semi-transparent and semi-reflective film 31; the semi-transparent and semi-reflective film 31 meets the following conditions:

[0036]

[0037] Among them, L1, a1 and b1 are respectively the brightness parameter value, red-green tone parameter value and yellow-blue tone parameter value in the Lab value parameters of the semi-transparent and semi-reflective film 31; L2, a2 ​​and b2 are respectively the brightness parameter value, red-green tone parameter value and yellow-blue tone parameter value in the Lab value parameters of the mirror silver optical film.

[0038] Specifically, the Lab value parameters of the film layer jointly describe the color characteristics of the film layer, including its brightness, red-green bias, and yellow-blue bias. Among them, L (brightness) represents the brightness of the film layer, and its value range can be specifically 0-100, indicating a continuous change from black (0) to white (100). The L value reflects the light transmittance of the film layer or the brightness of the reflected light. a (red-green) represents the red-green hue of the film layer, and its value range can be specifically -128 to +127. The a value reflects the relative content of red and green in the film layer. b (yellow-blue) represents the yellow-blue hue of the film layer, and its value range can be specifically -128 to +127. The b value reflects the relative content of yellow and blue in the film layer.

[0039] It should be noted that by measuring and analyzing the Lab value parameters of the semi-transparent and semi-reflective film 31, it is possible to achieve precise control and adjustment of the color of the semi-transparent and semi-reflective film 31. For example, during the manufacturing process, the process parameters (such as temperature, pressure, time, etc.) can be adjusted according to the target color requirements so that the Lab value parameters of the semi-transparent and semi-reflective film 31 reach a predetermined range.

[0040] Experiments show that when the Lab value parameters of the semi-transparent and semi-reflective film 31 and the mirror silver optical film are controlled to meet the above conditions, it can ensure an integrated mirror effect with consistent colors in the frame area 30 and the visible area 20.

[0041] According to the vehicle rearview mirror cover of the embodiment of the present application, by setting a laminate of a semi-transparent and semi-reflective film and an ink layer on the back of the cover frame area, and pasting a mirror silver optical film on the upper surface of the display screen to be assembled, and ensuring that the condition is met: the sum of the corresponding variances of the Lab value parameters of the semi-transparent and semi-reflective film and the mirror silver optical film is less than or equal to 4, so as to achieve an integrated mirror effect with consistent colors in the frame area and the visible area. In this way, not only can the rearview effect of the vehicle rearview mirror be effectively improved, which is conducive to improving driving safety, but also the overall product is more beautiful, which helps to improve user experience.

[0042] In the present application embodiment, Figure 3 As shown, the semi-transparent and semi-reflective film 31 includes SiO2 / Nb2O5 / SiO2 / Nb2O5 / SiO2 / Nb2O5 / SiO2, that is, the first SiO2 layer, the first Nb2O5 layer, the second SiO2 layer, the second Nb2O5 layer, the third SiO2 layer, the third Nb2O5 layer, and the fourth SiO2 layer are stacked in sequence. The preferred reflectivity range of the semi-transparent and semi-reflective film 31 is 48%-50%, so as to take into account the better rear-view effect and appearance. In addition, the preferred thickness range of the semi-transparent and semi-reflective film 31 is 200nm-300nm, and the semi-transparent and semi-reflective film 31 is preferably a multilayer film prepared by sputtering, so as to take into account the better film quality and optical performance.

[0043] In the present application embodiment, Figure 2 As shown, the ink layer 32 is a black ink layer. It is understandable that the ink layer 32 can also be other color ink layers, such as a black and gray ink layer, and the present application does not make specific restrictions on this.

[0044] Optionally, the ink layer 32 includes three layers of ink stacking. It is understood that the ink layer 32 can also be a single layer or a multi-layer ink stacking, and the present application does not specifically limit the specific number of layers.

[0045] In a specific example, the thickness of the ink layer 32 is preferably in the range of 10 μm to 15 μm, so as to take into account both the reliability of light shielding and the saving of materials.

[0046] Optionally, the ink layer 32 is an ink layer 32 prepared by screen printing. It is understood that the ink layer 32 can also be prepared by other coating methods.

[0047] Example 2

[0048] The present application also provides a vehicle-mounted rearview mirror (not shown in the figure), comprising: the vehicle-mounted rearview mirror cover and a display screen in the above embodiment. The display screen is a display screen corresponding to the vehicle-mounted rearview mirror cover, and comprises a mirror silver optical film attached to the upper surface of the display screen.

[0049] Specifically, the assembly here is to position the vehicle-mounted rearview mirror cover on the mirror silver optical film of the display screen, and the visible area of ​​the cover is set corresponding to the visible area of ​​the display screen.

[0050] It should be noted that the mirror silver optical film is an optical film independent of the display screen, and the substrate can be PET or other materials. Compared with the mirror silver optical film coated on the upper surface of the display screen, the mirror silver optical film has better stability, more flexible application and lower cost.

[0051] Furthermore, the explanations and descriptions of the vehicle-mounted rearview mirror cover in the above embodiment are also applicable to the vehicle-mounted rearview mirror in the above embodiment, and will not be repeated here.

[0052] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more"; "plurality" should be understood as two or more.

[0053] In the description of the present application, it should be noted that the relationship between structures should be understood in a broad sense. For example, the orientations or positional relationships indicated by "upper", "lower", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0054] It should be noted that in the drawings, the sizes of layers, regions, components and their relative sizes may be exaggerated for clarity. The same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions.

[0055] Those skilled in the art can understand that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle rearview mirror cover, characterized in that: The cover plate includes a visible area and a frame area; The visible area is transparent and is used to be attached to a display screen on the back of the visible area; wherein the display screen includes a mirror silver optical film attached to the upper surface of the display screen; The back of the frame area is provided with a semi-transparent and semi-reflective film, and an ink layer is provided on the semi-transparent and semi-reflective film; the semi-transparent and semi-reflective film meets the following conditions: Among them, L1, a1 and b1 are respectively the brightness parameter value, red-green tone parameter value and yellow-blue tone parameter value in the Lab value parameters of the semi-transparent and semi-reflective film; L2, a2 ​​and b2 are respectively the brightness parameter value, red-green tone parameter value and yellow-blue tone parameter value in the Lab value parameters of the mirror silver optical film.

2. The vehicle-mounted rearview mirror cover according to claim 1, characterized in that: The semi-transmissive and semi-reflective film includes a first SiO2 layer, a first Nb2O5 layer, a second SiO2 layer, a second Nb2O5 layer, a third SiO2 layer, a third Nb2O5 layer, and a fourth SiO2 layer stacked in sequence.

3. The vehicle-mounted rearview mirror cover according to claim 2, characterized in that: The reflectivity of the semi-transmissive and semi-reflective film ranges from 48% to 50%.

4. The vehicle-mounted rearview mirror cover according to claim 2, characterized in that: The thickness of the semi-transparent and semi-reflective membrane is in the range of 200nm-300nm.

5. The vehicle-mounted rearview mirror cover according to claim 2, characterized in that: The semi-transmissive and semi-reflective film is a multi-layer film prepared by sputtering.

6. The vehicle-mounted rearview mirror cover according to claim 1, characterized in that: The ink layer is a black ink layer.

7. The vehicle-mounted rearview mirror cover according to claim 6, characterized in that: The ink layer includes a three-layer ink stack.

8. The vehicle-mounted rearview mirror cover according to claim 7, characterized in that: The thickness of the ink layer is 10 μm-15 μm.

9. The vehicle-mounted rearview mirror cover according to claim 1, characterized in that: The ink layer is an ink layer prepared by screen printing.

10. A vehicle-mounted rearview mirror, characterized in that: include, The vehicle-mounted rearview mirror cover as described in any one of claims 1 to 9; and, The display screen is a display screen corresponding to the vehicle-mounted rearview mirror cover plate, and includes a mirror silver optical film attached to the upper surface of the display screen.

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