Novel rearview mirror display module

Abstract

The utility model discloses a novel rearview mirror display module which integrates display and heating functions, the novel rearview mirror display module comprises a cover plate and an LCD module, the cover plate covers the LCD module, the outer surface of the cover plate is provided with a waterproof layer, the LCD module is provided with a flexible circuit board which is electrically connected with a control mainboard, and the control mainboard is electrically connected with the control mainboard. The LCD module is further provided with a heating structure for heating the rearview mirror display module. According to the novel rearview mirror display module, due to the fact that the waterproof layer is arranged on the outer surface of the cover plate, water drops can slide down rapidly under the action of gravity, water drop attachment is avoided, meanwhile, the heating layer integrated in the LCD module achieves rapid demisting, the outer surface of the cover plate is prevented from fogging, and the use performance of a rearview mirror in the low-temperature or high-humidity environment is further enhanced. The overall design integrates waterproof, heating and display functions, the structure is simple, the cost is low, the display effect is stable, and the driving safety and the user experience are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of rearview mirror technology, and in particular to a novel rearview mirror display module. Background Technology

[0002] Rearview mirrors are indispensable safety devices for vehicles, used to reflect the situation behind, to the sides, and below, and to expand the driver's field of vision. However, in winter or rainy weather, due to temperature differences and humidity, water droplets or fog often adhere to the surface of the rearview mirrors, seriously affecting visibility and increasing driving hazards. To solve this problem, the industry has proposed heated anti-fogging technology.

[0003] Heated anti-fog technology integrates heating elements (such as heating wires or heating films) inside or on the surface of the rearview mirror, using electrical energy to generate heat to prevent water mist from condensing or to accelerate the evaporation of water droplets. While this technology is highly effective and can quickly remove water mist, its drawbacks cannot be ignored: it is complex in structure, costly, easily damaged, and suffers from uneven heating.

[0004] For example, Chinese utility model patent (CN210234813U) discloses a rearview mirror heating structure, which includes a first heating element and a second heating element. The first and second heating elements are respectively disposed on the back of the rearview mirror glass and in different areas on the back of the glass. The first and second heating elements are used to heat different areas of the glass to remove moisture from the glass surface. This achieves waterproofing and defogging functions by heating different areas of the back of the glass with different temperatures using the first and second heating elements. However, this rearview mirror heating structure is complex and cannot be used in rearview mirrors with display functions.

[0005] Therefore, there is an urgent need to develop a rearview mirror module that combines anti-fog and display functions, and is simple in structure and low in cost. It not only needs to solve the problem of using traditional rearview mirrors in rainy and foggy weather, but should also integrate display functions to improve the convenience and safety of obtaining driving information. Utility Model Content

[0006] Therefore, it is necessary to provide a novel rearview mirror display module to address the aforementioned technical problems. This module aims to solve the issues of water fogging and water droplet adhesion that easily occur in traditional rearview mirrors during rainy or low-temperature environments, while also integrating display functionality to improve driving safety. To solve the above technical problems, this utility model adopts the following technical solution:

[0007] A novel rearview mirror display module includes: a cover plate and an LCD module. The cover plate covers the LCD module and has a waterproof layer on its outer surface. The LCD module has a flexible circuit board that is electrically connected to a control motherboard. The LCD module also has a heating structure for heating the rearview mirror display module.

[0008] As a preferred embodiment of the novel rearview mirror display module provided by this utility model, the LCD module includes, in order, a first polarizer, a first glass sheet, a liquid crystal layer, a second glass sheet, and a second polarizer, with the first polarizer located on the uppermost side closest to the cover plate.

[0009] Furthermore, the LCD module is provided with a heating structure, which is a heating layer, located on the side of the second glass sheet facing the first glass sheet.

[0010] In a preferred embodiment of the novel rearview mirror display module provided by this utility model, the thickness of the waterproof layer is 0.01 to 0.03 mm.

[0011] In a preferred embodiment of the novel rearview mirror display module provided by this utility model, the waterproof layer is made of silicon dioxide, fluoride, organosilicon or silane compound.

[0012] In a preferred embodiment of the novel rearview mirror display module provided by this utility model, the heating layer is an indium tin oxide transparent conductive film, and the thickness of the heating layer is 50-100nm.

[0013] In a preferred embodiment of the novel rearview mirror display module provided by this utility model, the heating layer is provided with a connection pin at the lower edge of the second glass sheet, and the connection pin is connected to the control motherboard through a flexible circuit board.

[0014] As a preferred embodiment of the novel rearview mirror display module provided by this utility model, the flexible circuit board includes a main flexible circuit board and a secondary flexible circuit board. One end of the secondary flexible circuit board is connected to the heating layer, and the other end is connected to the control main board. The control main board is equipped with a heating control system.

[0015] As a preferred embodiment of the novel rearview mirror display module provided by this utility model, a temperature detector is built into the secondary flexible circuit board. When the detected temperature is equal to or lower than a set threshold, the heating control system is activated, and the heating layer is in a conductive state to heat the LCD module. When the temperature is higher than the set threshold, the heating control system is disconnected, and the heating layer stops working.

[0016] In a preferred embodiment of the novel rearview mirror display module provided by this utility model, the cover plate and the LCD module are connected by an adhesive layer.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The novel rearview mirror display module of this embodiment has multiple beneficial effects. First, by setting a waterproof layer on the outer surface of the cover plate, the surface energy is reduced, allowing water droplets to slide off quickly and preventing water droplets from adhering, thus ensuring clear visibility when driving in rainy weather. Second, the heating layer integrated into the LCD module achieves rapid defogging through the Joule heating effect, effectively preventing fogging on the outer surface of the cover plate and improving performance in low-temperature or high-humidity environments.

[0019] Furthermore, the heating system automatically controls the temperature using a temperature detector, activating heating only when the temperature is below a threshold to prevent overheating from affecting the TN screen's lifespan. The overall design integrates waterproofing, heating, and display functions, featuring a simple structure, low cost, and stable display performance, significantly improving driving safety and user experience. Attached Figure Description

[0020] Figure 1 A side view diagram of the novel rearview mirror display module provided by this utility model;

[0021] Figure 2 for Figure 2 An enlarged structural diagram of part A;

[0022] Figure 3 Schematic diagram of the structure of the LCD module of the novel rearview mirror display module provided by this utility model Figure 1 ;

[0023] Figure 4 Schematic diagram of the structure of the LCD module of the novel rearview mirror display module provided by this utility model Figure 2 .

[0024] The markings in the diagram are explained as follows:

[0025] Cover plate 1, waterproof layer 11, LCD module 2, first polarizer 21, first glass sheet 22, second glass sheet 23, heating layer 231, second polarizer 24, liquid crystal layer 25, adhesive layer 3, main flexible circuit board 4, and secondary flexible circuit board 5. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] As described in the background section, existing rearview mirror heating structures are complex and cannot simultaneously provide display functionality.

[0030] To solve this technical problem, this utility model provides a novel rearview mirror display module that integrates display and heating functions.

[0031] Please refer to Figures 1-4 A novel rearview mirror display module is characterized in that it includes: a cover plate 1 and an LCD module 2, wherein the cover plate 1 covers the LCD module 2, the outer surface of the cover plate 1 is provided with a waterproof layer 11, the LCD module 2 is provided with a flexible circuit board that is electrically connected to a control main board, and the LCD module 2 is also provided with a heating structure for heating the rearview mirror display module.

[0032] The novel rearview mirror display module provided by this utility model effectively reduces surface energy by setting a waterproof layer 11 on the outer surface of the cover plate 1, allowing water droplets to slide off quickly under gravity, preventing water droplets from adhering, ensuring clear visibility for the driver, and improving driving safety in rainy weather. Simultaneously, the heating layer 231 integrated in the LCD module 2 achieves rapid defogging through the Joule heating effect, preventing fogging on the outer surface of the cover plate 1, further enhancing the performance of the rearview mirror in low-temperature or high-humidity environments.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] Example 1

[0037] Please refer to Figures 1-4 This embodiment provides a novel rearview mirror display module, comprising a cover plate 1 and an LCD module 2, integrating waterproofing, heating, and display functions through a multi-layered structural design. Specifically, the cover plate 1 covers the LCD module 2, primarily protecting it from damage or scratches, while also providing waterproofing. Furthermore, the outer surface of the cover plate 1 has a waterproof structure to prevent water droplets from adhering. Further, the LCD module 2 has a flexible circuit board electrically connected to the control board. Furthermore, the LCD module 2 also has a heating structure to prevent water vapor from condensing on the outer surface of the cover plate 1.

[0038] Furthermore, the cover plate 1 and the LCD module 2 are connected by an adhesive layer 3, specifically the adhesive layer 3 using OCA optical adhesive to ensure high transparency and good adhesion performance.

[0039] Furthermore, the waterproof structure is a waterproof layer 11, which is disposed on the outer surface of the cover plate 1. Specifically, the thickness of the waterproof layer 11 is 0.01–0.03 mm, and the material of the waterproof layer 11 can be silica, fluoride, organosilicon, or silane compound. Preferably, in this embodiment, the thickness of the waterproof layer 11 is 0.01 mm, and the waterproof layer 11 is made of silica, which has good chemical stability and high durability. The waterproof layer 11 reduces surface energy, allowing water droplets to slide off quickly under gravity, preventing condensation and ensuring clear visibility for the driver.

[0040] Furthermore, the LCD module 2 includes, in ascending and descending order, a first polarizer 21, a first glass sheet 22, a liquid crystal layer 25, a second glass sheet 23, and a second polarizer 24. The first polarizer 21 is located on the uppermost layer, near the cover plate 1, and is used to adjust the polarization direction of the incident light. The second glass sheet 23 has a display layer on the side facing the first glass sheet 22. The first glass sheet 22 has a common electrode, which forms an electric field with the display layer of the second glass sheet 23, driving the liquid crystal layer 25 to rotate. The liquid crystal layer 25 uses TN (Twisted Nematic) technology, controlling the rotation of liquid crystal molecules through an electric field to achieve image display. The display layer of the second glass sheet 23 includes a TFT matrix and pixel electrodes, used to control the switching and signal transmission of each pixel. The second polarizer 21 is located on the lowermost layer and works in conjunction with the first polarizer 21 to modulate the light.

[0041] Furthermore, the LCD module 2 is provided with a heating structure, namely a heating layer 231. Specifically, the heating layer 231 is disposed on the side of the second glass sheet 23 facing the first glass sheet 22, and is disposed on the display layer. An insulating layer is also provided between the heating layer 231 and the display layer. The heating layer 231 is a transparent conductive film of indium tin oxide (ITO) material with a thickness of 50-100 nm. It achieves its heating function through the Joule heating effect, preventing fogging on the outer surface of the cover plate. The insulating layer is used to isolate the heating layer 231 and the display layer to avoid short circuits or signal interference.

[0042] Furthermore, the connection pins of the heating layer 231 and the display layer are led out from the lower edge of the second glass sheet 23 and staggered to avoid interference. The connection pins are connected to the control motherboard through a flexible circuit board, and the control motherboard is equipped with a heating control system.

[0043] Furthermore, the flexible circuit board includes a main flexible circuit board 4 and a secondary flexible circuit board 5. One end of the main flexible circuit board 4 is connected to the connection pin of the display layer of the second glass sheet 23, and the other end is connected to the control main board to control the display function. One end of the secondary flexible circuit board 5 is connected to the connection pin of the heating layer 231, and the other end is connected to the control main board to control the automatic heating system. The secondary flexible circuit board 5 has a built-in temperature detector. When the temperature is equal to or lower than a set threshold, the heating system is activated, and the heating layer 231 is in a conductive state to heat the LCD module 2. When the temperature is higher than the set threshold, the heating system is deactivated, and the heating layer 231 stops working. It should be noted that the heating temperature only needs to be 5-10°C higher than the vehicle interior temperature; excessively high temperatures are unnecessary. This is because rearview mirror displays typically use TN screens, and TN screens have a limited operating temperature range; excessively high temperatures can affect their lifespan. Therefore, precise temperature control via a temperature detector effectively removes fog and ensures the stability and durability of the display screen.

[0044] The fabrication and assembly process of the novel rearview mirror display module in this embodiment is as follows: First, a waterproof layer 11, preferably made of silicon dioxide, with a thickness of 0.01 mm, is deposited on the outer surface of the cover plate. Then, a heating layer 231, an insulating layer, and a display layer are sequentially deposited on the second glass sheet 23. The first glass sheet 22 and the second glass sheet 23 are stacked, with a liquid crystal layer 25 filling the middle. A first polarizer 21 and a second polarizer 24 are respectively attached to the outer sides of the first glass sheet 22 and the second glass sheet 23. Next, the main flexible circuit board 4 and the secondary flexible circuit board 5 are connected to the connection pins of the display layer and the connection pins of the heating layer 231 respectively using conductive adhesive, and the other end of the flexible circuit board is soldered to the control motherboard. Finally, OCA optical adhesive is coated between the cover plate 1 and the LCD module 2 to form an adhesive layer 3, and the cover plate 1 and the LCD module 2 are pressed together to complete the assembly.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A novel rearview mirror display module, characterized in that, It includes: The cover plate (1) and the LCD module (2) are provided. The cover plate (1) covers the LCD module (2). The outer surface of the cover plate (1) is provided with a waterproof layer (11). The LCD module (2) is provided with a flexible circuit board that is electrically connected to the control motherboard. The LCD module (2) is also provided with a heating structure to heat the rearview mirror display module.

2. The novel rearview mirror display module according to claim 1, characterized in that, The LCD module (2) includes, in order, a first polarizer (21), a first glass sheet (22), a liquid crystal layer (25), a second glass sheet (23), and a second polarizer (24), with the first polarizer (21) located on the uppermost side closest to the cover plate (1).

3. The novel rearview mirror display module according to claim 2, characterized in that, The LCD module (2) is provided with a heating structure, which is a heating layer (231). The heating layer (231) is located on the side of the second glass sheet (23) facing the first glass sheet (22).

4. The novel rearview mirror display module according to claim 1, characterized in that, The thickness of the waterproof layer (11) is 0.01 to 0.03 mm.

5. The novel rearview mirror display module according to claim 4, characterized in that, The waterproof layer (11) is made of silicon dioxide, fluoride, organosilicon or silane compound.

6. The novel rearview mirror display module according to claim 3, characterized in that, The heating layer (231) is an indium tin oxide transparent conductive film, and the thickness of the heating layer (231) is 50-100 nm.

7. The novel rearview mirror display module according to claim 1, characterized in that, The heating layer (231) has connection pins on the lower edge of the second glass sheet (23), and the connection pins are connected to the control motherboard through a flexible circuit board.

8. The novel rearview mirror display module according to claim 6, characterized in that, The flexible circuit board includes a main flexible circuit board (4) and a secondary flexible circuit board (5). One end of the secondary flexible circuit board (5) is connected to the heating layer (231), and the other end is connected to the control motherboard. The control motherboard is equipped with a heating control system.

9. The novel rearview mirror display module according to claim 8, characterized in that, The flexible circuit board (5) is equipped with a temperature detector. When the detected temperature is equal to or lower than the set threshold, the heating control system is activated and the heating layer (231) is in a conductive state to heat the LCD module (2). When the temperature is higher than the set threshold, the heating control system is disconnected and the heating layer (231) stops working.

10. The novel rearview mirror display module according to claim 1, characterized in that, The cover plate (1) and the LCD module (2) are connected by an adhesive layer (3).

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