Transparent antenna and automotive glass

Abstract

The utility model provides a transparent antenna which comprises an antenna grid structure layer and a base material layer, the base material layer comprises a first surface and a second surface which are opposite to each other, the base material layer is a non-metallic heat insulation film, and the antenna grid structure layer is arranged on the first surface of the base material layer. Preferably, the heat insulation film is a metal-free heat insulation film. The utility model further provides automobile glass which comprises a first glass layer and a second glass layer and further comprises the transparent antenna provided by the embodiment of the utility model, and the transparent antenna is arranged between the first glass layer and the second glass layer. According to the transparent antenna and the automobile glass comprising the transparent antenna provided by the embodiment of the utility model, stronger antenna signal and heat insulation effects and attractive appearance effects can be realized with lower cost.

Description

Technical Field

[0001] This utility model relates to an antenna, specifically a transparent antenna particularly suitable for automobiles, and also to automobile glass incorporating the transparent antenna. Background Technology

[0002] Currently, automotive antennas are composed of an increasing number of components, such as AM / FM radio antennas, GPS / GNSS antennas, 4G / 5G communication antennas, WIFI / Bluetooth antennas, ETC antennas, and UWB antennas, primarily in the form of shark fin antennas or circular / cylindrical antennas. However, with the increasing popularity of panoramic sunroofs and streamlined car body designs, traditional exterior-mounted automotive antennas can no longer meet the aesthetic demands of the automotive consumer market. The need for concealed antenna designs is growing stronger, leading to the design and installation of more and more automotive antennas inside vehicles.

[0003] However, an increasing number of cars are now using metallic solar films or metallic-coated window glass to reflect the ultraviolet and infrared rays in sunlight, thereby reducing interior temperature and UV radiation. These films or glass can weaken antenna signals. Automakers need to design mechanical holes in the films or remove portions of the metallic coating from the windows using laser technology to allow for antenna signal transmission, which will affect the visual appearance and increase costs.

[0004] Therefore, it is necessary to develop a transparent antenna that can achieve strong antenna signal, heat insulation, and aesthetic appearance at a lower cost. Utility Model Content

[0005] One of the purposes of this invention is to provide a transparent antenna, particularly suitable for automotive glass, which achieves strong antenna signal, heat insulation effect and aesthetic appearance at a lower cost.

[0006] Another object of this invention is to provide an automotive glass that includes the transparent antenna provided by this invention.

[0007] According to one aspect of the present invention, a transparent antenna is provided, comprising an antenna mesh structure layer and a substrate layer, the substrate layer comprising a first surface and a second surface opposite to each other, wherein the substrate layer is a non-metallic heat-insulating film, and the antenna mesh structure layer is disposed on the first surface of the substrate layer. Preferably, the heat-insulating film is a metal-free heat-insulating film.

[0008] According to another aspect of the present invention, an automotive glass is provided, comprising a first glass layer and a second glass layer, and further comprising a transparent antenna provided in an embodiment of the present invention, wherein the transparent antenna is disposed between the first glass layer and the second glass layer.

[0009] According to another aspect of the present invention, an automotive glass is provided, comprising a glass layer and a transparent antenna provided in an embodiment of the present invention, wherein the transparent antenna is disposed on the surface of the glass layer facing the interior of the vehicle.

[0010] The present invention has the following beneficial effects: the transparent antenna and the automotive glass including the transparent antenna provided by the embodiments of the present invention can achieve strong antenna signal, heat insulation effect and beautiful appearance at a lower cost. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the following drawings are merely exemplary illustrations of some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Moreover, these drawings should not be construed as any limitation imposed on this utility model.

[0012] Figure 1 This is a schematic diagram of the structure of a transparent antenna according to an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of a transparent antenna according to another embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of a transparent antenna according to another embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of the structure of an automotive glass according to an embodiment of the present invention;

[0016] Figure 5 This is a schematic diagram of the result of another embodiment of the automotive glass of this utility model. Detailed Implementation

[0017] It should be noted that the following embodiments are exemplary descriptions of the present invention, and features in different embodiments can be combined with each other without conflict. The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a transparent antenna according to an embodiment of the present invention, as shown below. Figure 1 As shown, the transparent antenna 100 includes a substrate layer 10 and an antenna mesh structure layer 20. The substrate layer 10 includes a first surface 11 and a second surface 12 opposite to each other. The substrate layer 10 is a non-metallic heat insulation film. The antenna mesh structure layer 20 is disposed on the first surface 11 of the substrate layer 10.

[0019] Figure 2 This is a schematic diagram of the structure of a transparent antenna according to another embodiment of this utility model. Figure 2 As shown, the transparent antenna 110 includes, in addition to, the following Figure 1 In addition to the substrate layer 10 and the antenna grid structure layer 20, the system also includes a first adhesive layer 30 and a second adhesive layer 40. The first adhesive layer 30 covers the antenna grid structure layer 20 on the first surface 11 of the substrate layer 10, and the second adhesive layer 40 covers the second surface 12 of the substrate layer 10. The first adhesive layer 30 and the second adhesive layer 40 are also configured to be bonded to automotive window glass.

[0020] Alternatively, the first adhesive layer 30 and the second adhesive layer 40 may be thermosetting adhesive layers. In another embodiment, the first adhesive layer 30 and the second adhesive layer 40 may be pressure-sensitive adhesive layers.

[0021] Figure 3 This is a schematic diagram of the structure of a transparent antenna according to another embodiment of this utility model. Figure 3 As shown, the transparent antenna 120 includes, in addition to, the following Figure 1 In addition to the substrate layer 10 and the antenna grid structure layer 20, the implementation also includes a first adhesive layer 30 and a transparent protective layer 50, wherein the transparent protective layer 50 is disposed on the second surface of the substrate layer 10 to protect the substrate layer.

[0022] Preferably, the heat insulation film of the substrate layer 10 is a metal-free heat insulation film. More preferably, the heat insulation film can be selected as 3M. TM Ultra-transparent solar thin film. Preferably, the thickness of the substrate layer 10 is between 10-50 μm, and the thickness of the antenna grid structure layer 20 is between 1-5 μm.

[0023] The heat insulation film applicable to the embodiments of this utility model preferably has a visible light transmittance ≥90%, a near-infrared light reflectance ≥90%, and an electromagnetic wave signal attenuation <3dB. For details, please refer to the following linked webpage for information on 3M. TM Ultra-transparent solar thin film (3M) TM Introduction to Ultra-Clear Solar Film: https: / / www.3m.com / 3M / en_US / p / d / b00016680 / . It's understandable that the heat insulation film can be from other brands and models. The main considerations for choosing a heat insulation film are its ability to block sunlight from the outside of the vehicle to a certain extent, reduce the interior temperature and UV radiation, and ensure a tight fit with the antenna mesh structure layer 20.

[0024] In some embodiments, the antenna mesh structure layer 20 is formed directly on a portion of the first surface 11 of the substrate layer 10. Of course, as needed, in other embodiments, the antenna mesh structure layer 20 can also be pre-formed on another substrate and then transferred to a pre-selected area of ​​the first surface 11 of the substrate layer 10. How to fabricate and select the antenna mesh structure layer 20 is a well-established technology in the industry and will not be elaborated further.

[0025] In this embodiment of the invention, the antenna grid structure layer 20 of the transparent antenna can be directly formed on a large sheet of heat-insulating film. Therefore, when the heat-insulating film is applied to the glass, there is no need to install the antenna separately. Alternatively, the transparent antenna can be directly attached to the glass during the manufacturing process of the car window. This invention provides two types of automotive glass structures, as described below.

[0026] Figure 4 This is a structural schematic diagram of an embodiment of automotive glass according to this utility model. Figure 4 As shown, the automotive glass 200 includes a first glass layer 60, a second glass layer 70, and as shown in the figure. Figure 2 The transparent antenna 110 of the illustrated embodiment has a space 80 between the first glass layer 60 and the second glass layer 70. The transparent antenna 110 is disposed within the space 80 and is attached to the first glass layer 60 and the second glass layer 70. In the structure of this embodiment, the first adhesive layer 30 and the second adhesive layer 40 are preferably thermosetting adhesive layers.

[0027] Figure 5 This is a structural schematic diagram of an automotive glass according to another embodiment of the present invention. Figure 5 As shown, the automotive glass 300 includes a first glass layer 60 and a second glass layer 70, wherein a certain space 80 exists between the first glass layer 60 and the second glass layer 70, and also includes, for example, Figure 3 The transparent antenna 120 of the illustrated embodiment is attached to the surface of the second glass layer 70 facing away from the space 80, i.e., the glass surface facing the interior of the vehicle. Alternatively, to meet different customer needs, the automotive glass 300 may also include only one layer of glass instead of two layers of insulated glass (i.e., the first glass layer 60, the second glass layer 70, and the space 80). In the structure of this embodiment, the first adhesive layer 30 is preferably a pressure-sensitive adhesive layer to facilitate attaching the transparent antenna 120 to the surface of the second glass layer 70 facing away from the space 80.

[0028] The transparent antenna and automotive glass including the transparent antenna provided in this embodiment of the invention achieve both heat insulation and avoidance of the influence of metals contained in ordinary heat insulation films on the antenna signal because the substrate layer of the transparent antenna is selected as a non-metallic heat insulation film. Furthermore, because it is transparent, it can be integrated with the car window glass, avoiding color differences. In summary, the transparent antenna and automotive glass including the transparent antenna provided in this embodiment of the invention can achieve strong antenna signal, heat insulation effect, and aesthetic appearance at a relatively low cost.

[0029] The description of this utility model uses "automotive glass". It can be understood that the technical solution provided by the embodiments of this utility model is also applicable to glass used in trains or other means of transportation that require the installation of antennas, as well as window glass in buildings that require the installation of antennas. For the sake of simplicity, it is uniformly referred to as "automotive glass".

[0030] It is understood that the embodiments described above are for illustrative purposes only and not for limiting the present invention. Those skilled in the art will understand that modifications and variations can be made to the present invention as long as they do not depart from the spirit and scope of the present invention. The above modifications and variations are considered to be within the scope of the present invention and the appended claims. The scope of protection of the present invention is defined by the appended claims. Furthermore, any reference numerals in the claims should not be construed as limiting the present invention. The verb "comprising" and its variations do not exclude the presence of other elements or steps besides those declared in the claims. The indefinite article "a" preceding an element or step does not exclude the presence of a plurality of such elements or steps.

Claims

1. A transparent antenna, comprising an antenna mesh structure layer and a substrate layer, the substrate layer comprising opposing first and second surfaces, characterized in that, The substrate layer is a non-metallic heat-insulating film, and the antenna grid structure layer is disposed on the first surface of the substrate layer.

2. The transparent antenna according to claim 1, characterized in that, The heat insulation film is a metal-free heat insulation film.

3. The transparent antenna according to claim 1, characterized in that, The heat insulation film is 3M. TM Ultra-transparent solar thin film.

4. The transparent antenna according to claim 1, characterized in that, The antenna grid structure layer is formed directly on a portion of the first surface of the substrate layer.

5. The transparent antenna according to claim 1, characterized in that, It also includes a first adhesive layer that covers the antenna grid structure layer on the first surface of the substrate layer.

6. The transparent antenna according to claim 5, characterized in that, It also includes a second adhesive layer, which covers the second surface of the substrate layer.

7. The transparent antenna according to claim 6, characterized in that, The first adhesive layer and the second adhesive layer are thermosetting adhesive layers.

8. The transparent antenna according to claim 5, characterized in that, The first adhesive layer is a pressure-sensitive adhesive layer.

9. The transparent antenna according to claim 8, characterized in that, It also includes a transparent protective layer disposed on the second surface of the substrate layer.

10. An automotive glass comprising a first glass layer and a second glass layer, characterized in that, It also includes a transparent antenna as described in any one of claims 1-7, wherein the transparent antenna is disposed between the first glass layer and the second glass layer.

11. An automotive glass, comprising a glass layer, characterized in that, It also includes a transparent antenna as described in any one of claims 1-5 or any one of claims 8-9, the transparent antenna being disposed on the surface of the glass layer facing the interior of the vehicle.

Images