A transparent glass sandwich antenna for a vehicle

Abstract

The utility model discloses a kind of vehicle-mounted transparent glass interlayer radio antenna, including sequentially laminated outer glass, transparent conductive antenna film and inner glass;One side of transparent conductive antenna film is solidified with antenna, antenna is surrounded by antenna material silk, and the equivalent diameter of antenna material silk is less than the wavelength of visible light;One end of feed line channel connected with the antenna on transparent conductive antenna film is opened on inner glass, and the other end of feed line channel is connected with feed line.The vehicle-mounted transparent glass interlayer radio antenna of the utility model, compared with prior art, antenna is transparentized and processed on film, compared with directly printing antenna on glass, it is more convenient to operate, while realizing the revolutionary promotion of aesthetics and design freedom, from "visible" to "visual invisible", by adhering film between inner and outer glass, avoid antenna exposure, greatly improve the reliability of antenna, realize the leap of reliability and durability, from "fragile" to "strong", and application prospect is good.

Description

Technical Field

[0001] This utility model relates to the field of glass radio antenna technology, and to a vehicle-mounted transparent glass sandwich radio antenna, and in particular to a vehicle-mounted transparent glass sandwich radio antenna with good reliability, high aesthetics and performance not limited by the installation position. Background Technology

[0002] Glass-printed antennas represent the evolution of automotive radio antennas from external, mechanical antennas to internal, integrated, and electronic antennas. They meet the automotive industry's demands for aesthetics, aerodynamics, and functional diversity, utilizing mature printed electronics technology to transform the antenna from a separate component into an integrated functional layer within the automotive glass. While potentially slightly inferior to traditional external antennas in absolute performance, their significant advantages in reliability, aesthetics, and system integration have made them the mainstream solution for modern passenger vehicle antennas. Current windshield radio antennas, such as... Figure 1 As shown, it is generally formed by printing conductive silver paste or graphene onto the inner surface of the windshield through metal plating or printing processes, and then sintering it at high temperature to form a conductive line-antenna. In order to avoid obstructing the driver's view and affecting the aesthetics of the antenna, the printed antenna 3 is generally set on the black edge 2 of the glass. However, such a design affects the further improvement of antenna performance. Existing windshield radio antennas have the following drawbacks: 1) Printed antennas have fatal flaws in terms of aesthetics and design freedom, damaging the appearance, limiting applications, and being completely opaque, severely compromising the product's aesthetics and transparency; 2) They cause visual pollution, as the dark gray antenna pattern is clearly visible on the glass, making it impossible to achieve "invisibility," which clashes with the minimalist and clean appearance pursued by modern products; 3) Their application scenarios are narrow, limited to areas with black ceramic glaze (black edges) covering the glass perimeter (such as the rear windshield of a car), and cannot be used in any area that requires maintaining visibility and aesthetics, such as the windshield, side windows, and sunroof; 4) Printed antennas have shortcomings in reliability and durability. The silver paste lines exposed on the surface are easily affected by physical scratches and vibrations, which may cause micro-cracks or detachment. They are fragile and have a limited lifespan. Direct exposure to the environment, especially long-term exposure to ultraviolet rays, high temperature and humidity, and temperature cycling, can easily cause the silver paste to oxidize and sulfide, leading to decreased conductivity and performance degradation. In humid environments, silver ions may migrate, potentially causing short circuits between antenna lines, resulting in poor long-term reliability.

[0003] Therefore, developing a glass radio antenna that is reliable, aesthetically pleasing, and whose performance is not limited by the installation location is of great practical significance. Utility Model Content

[0004] Due to the aforementioned defects in the existing technology, this utility model provides a glass radio antenna with high reliability, high aesthetics, and performance that is not limited by the installation location, in order to solve the problems of existing glass radio antennas affecting the aesthetics and field of view of glass, performance that is difficult to improve due to limitations in the installation location, and poor reliability.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vehicle-mounted transparent glass sandwich radio antenna includes an outer glass layer, a transparent conductive antenna film, and an inner glass layer stacked sequentially.

[0007] An antenna is fixed on one side of the transparent conductive antenna film. The antenna is made of antenna material filaments. The equivalent diameter of the antenna material filaments is smaller than the wavelength of visible light so that most of the light can pass through directly instead of being reflected or absorbed, thus achieving transparency.

[0008] The inner glass layer has a feed line channel at one end connected to the antenna on the transparent conductive antenna film, and the other end of the feed line is connected to the feed line.

[0009] Antennas can be made from metal meshes (such as copper or silver, where the mesh gaps allow light to pass through and the metal wires conduct electricity, resulting in optimal conductivity) with linewidths much smaller than the wavelength of visible light. Alternatively, carbon nanotubes, whose physical dimensions are smaller than the wavelength of visible light, can also be used as antennas. Carbon nanotubes are tubular structures formed from rolled-up graphene sheets and can be divided into single-walled and multi-walled carbon nanotubes. They have high conductivity and mechanical strength, and possess excellent electrical and mechanical properties. They can be made into inks and processed through spraying, coating, and other methods.

[0010] The above structure can be used not only for vehicle-mounted glass radio antennas, but also for other glass antennas that meet the requirements.

[0011] This utility model of a vehicle-mounted transparent glass sandwich radio antenna, compared with the prior art, makes the antenna transparent and processes it on a thin film. Compared with printing the antenna directly on the glass, the operation is simpler, and at the same time, it realizes the improvement of aesthetics and design freedom, from "visible" to "visually invisible". By bonding the thin film between the inner and outer glass layers, the antenna is not exposed, which greatly improves the reliability of the antenna and realizes the reliability and durability from "fragile" to "robust", which has great application prospects.

[0012] As a preferred technical solution:

[0013] As described above, in a vehicle-mounted transparent glass sandwich radio antenna, the transparent conductive antenna film has one side with the transparent antenna bonded to the inner glass layer via a PVB inner sheet.

[0014] The other side of the transparent conductive antenna film is bonded to the outer glass layer via a PVB outer sheet. A sandwich lamination technique can be used, where the PVB film is completely melted and flowed in a high-temperature, high-pressure autoclave, firmly bonding the inner and outer glass layers and the transparent conductive antenna film into a single unit. This ensures the structure is free of air bubbles and impurities to prevent optical defects and signal interference, ensuring the antenna does not shift or deform, maintaining the electrical performance of the antenna design, ensuring precise alignment of the feed point, and guaranteeing the reliability of the signal transmission channel.

[0015] As described above, in a vehicle-mounted transparent glass sandwich antenna, the feeder channel penetrates the inner glass layer and is filled with conductive paste. The following processing technique can be employed: laser perforation + conductive paste filling. A high-precision laser is used to drill a hole in the inner glass layer, which is then filled with conductive paste to form a miniature "metallized via." This channel electrically connects the transparent antenna within the sandwich layer to the feeder inside the vehicle, mechanically ensuring the integrity of the glass structure and solving the engineering challenge of "how to extract / introduce signals from the enclosed sandwich layer."

[0016] As described above, in a vehicle-mounted transparent glass sandwich radio antenna, the transparent conductive antenna film is a PET film coated with antenna material, cured, and etched into the antenna shape. The process can involve uniformly coating the antenna material onto the PET film, curing it, and then using a laser to etch the antenna shape.

[0017] As described above, in a vehicle-mounted transparent glass sandwich radio antenna, the feed line is connected to the receiver at the end furthest from the feed line channel.

[0018] The above technical solution is only one feasible technical solution of this utility model. The protection scope of this utility model is not limited to this. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0019] The above-mentioned utility model has the following advantages or beneficial effects:

[0020] (1) The vehicle-mounted transparent glass interlayer radio antenna of this utility model has achieved a revolutionary improvement in aesthetics and design freedom, from "visible" to "visually invisible", which can meet the needs of all-domain applications. The antenna can be deployed in any glass area such as the windshield, side window, and sunroof, no longer limited to the black edge area of ​​the rear windshield. It meets the modern car's pursuit of "panoramic glass" and "flawless appearance", and realizes the concept of "function serving form".

[0021] (2) The vehicle-mounted transparent glass sandwich radio antenna of this utility model has achieved a leap in reliability and durability, from "fragile" to "robust". The antenna is sealed between two layers of glass and two layers of film to form a "protective cabin". It has strong environmental tolerance, completely isolates moisture, oxygen and ultraviolet rays, fundamentally solves the problems of oxidation, corrosion and electrochemical migration, and has excellent mechanical protection. Protected by glass and film, it has strong scratch resistance, vibration resistance and impact resistance. Its lifespan is consistent with that of the glass itself and its performance is extremely stable. Because the environment is isolated, the electrical performance of the antenna (such as impedance and resonant frequency) is very stable throughout its entire life cycle and will not drift due to environmental aging. It has great application prospects. Attached Figure Description

[0022] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; the focus is on illustrating the gist of the invention.

[0023] Figure 1 This is a schematic diagram of a prior art windshield radio antenna;

[0024] Figure 2 This is a top view of the vehicle-mounted transparent glass sandwich radio antenna of this utility model;

[0025] Figure 3 This is a cross-sectional view of the vehicle-mounted transparent glass sandwich radio antenna of this utility model;

[0026] Figure 4 This is a top view of the antenna on a transparent conductive antenna film.

[0027] Among them, 1-glass, 2-black glass edge, 3-printed antenna, 4-transparent conductive antenna film, 5-feed channel, 6-feed, 7-receiver end, 8-outer glass, 9-PVB outer sheet, 10-PVB inner sheet, 11-inner glass. Detailed Implementation

[0028] The structure of this utility model will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the utility model.

[0029] Example 1

[0030] A vehicle-mounted transparent glass sandwich radio antenna, such as Figure 2 and 3 As shown, it includes an outer glass layer 8, a PVB outer sheet 9, a transparent conductive antenna film 4, a PVB inner sheet 10, and an inner glass layer 11 stacked in sequence.

[0031] The transparent conductive antenna film 4 is formed by coating antenna material and then curing and etching it. Figure 4 The PET film shown has an antenna shape, and the antenna is formed by silver nanowires (25 nm in diameter). Figure 4 The structure shown (its width is 20mm);

[0032] The transparent conductive antenna film 4 has a transparent antenna on one side that is bonded to the PVB inner sheet 10. The inner glass 11 has a feed channel 5 that is connected to the antenna on the transparent conductive antenna film at one end (the feed channel 5 penetrates the inner glass 11 and is filled with conductive paste). The other end of the feed channel 5 is connected to the feed line 6. The end of the feed line 6 away from the feed channel 5 is connected to the receiver 7.

[0033] Verified, this utility model of a vehicle-mounted transparent glass sandwich-type radio antenna achieves a revolutionary improvement in aesthetics and design freedom, moving from "visible" to "visually invisible." It can meet the needs of all-domain applications, allowing the antenna to be deployed in any glass area, such as the windshield, side windows, and sunroof, no longer limited by the black border area of ​​the rear windshield. This satisfies modern automobiles' pursuit of "panoramic glass" and "flawless appearance," realizing the concept of "function serving form." It also achieves a leap in reliability and durability, moving from "fragile" to "robust." The antenna is sealed between two layers of glass and two layers of film, forming a "protective cabin" with superior environmental tolerance, completely isolating it from moisture, oxygen, and ultraviolet radiation. This fundamentally solves the problems of oxidation, corrosion, and electrochemical migration. It also provides excellent mechanical protection, protected by the glass and film, exhibiting strong scratch, vibration, and impact resistance. Its lifespan is consistent with the glass itself, and its performance is extremely stable. Due to environmental isolation, the antenna's electrical performance (such as impedance and resonant frequency) remains very stable throughout its entire lifespan, without drifting due to environmental aging, making it highly promising for applications.

[0034] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0035] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A vehicle-mounted transparent glass sandwich radio antenna, characterized in that: It includes an outer glass layer, a transparent conductive antenna film, and an inner glass layer, which are stacked sequentially. An antenna is solidified on one side of the transparent conductive antenna film. The antenna is formed by antenna material filaments, and the equivalent diameter of the antenna material filaments is smaller than the wavelength of visible light. The inner glass layer has a feed line channel at one end connected to the antenna on the transparent conductive antenna film, and the other end of the feed line is connected to the feed line.

2. The vehicle-mounted transparent glass sandwich radio antenna according to claim 1, characterized in that, The transparent conductive antenna film has the transparent antenna solidified on one side, which is bonded to the inner glass layer through the PVB inner sheet. The other side of the transparent conductive antenna film is bonded to the outer glass layer via a PVB outer sheet.

3. The vehicle-mounted transparent glass sandwich radio antenna according to claim 1, characterized in that, The feeder channel penetrates the inner glass layer and is filled with conductive paste.

4. The vehicle-mounted transparent glass sandwich radio antenna according to claim 1, characterized in that, The transparent conductive antenna film is a PET film coated with antenna material and then cured and etched into the shape of an antenna.

5. The vehicle-mounted transparent glass sandwich radio antenna according to claim 1, characterized in that, The feeder is connected to the receiving end at the end furthest from the feeder channel.

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