Composite pane assembly having an antenna for a vehicle

Abstract

The present invention relates to a composite pane assembly (101) having an antenna (4) for a vehicle, comprising - a first pane (1) having a first surface (I) and a second surface (II), - a second pane (2) having a first surface (III) and a second surface (IV), - a thermoplastic intermediate layer (3) which connects the first pane (1) and the second pane (2) to each other to form a composite pane (10), - a first electrically conductive coating (6) which is provided on one of the surfaces (I, II, III, IV) of the first pane (1) or the second pane (2), - a metal frame (9) which surrounds at least a portion of the composite pane (10), - a coaxial cable (5) or a coaxial plug, wherein the antenna (4) has an antenna conductor (4.1) and an antenna base (4.2), and the antenna (4) is arranged on the metal frame (9), wherein the antenna base (4.2) is galvanically connected to the metal frame (9) via the coaxial cable and / or via the coaxial plug (14), and wherein the metal frame (9) is electrically conductively connected to the first electrically conductive coating (6).

Description

[0001] SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0002] 1

[0003] Composite disc arrangement with one antenna for a vehicle

[0004] The invention relates to a composite disc arrangement for a vehicle and a vehicle with the composite disc arrangement.

[0005] Laminated glass is used as windshields or roof windows in motor vehicles. Laminated glass consists of at least one first pane, one second pane, and an adhesive interlayer that bonds the first pane to the second pane across its entire surface. Typical interlayers are polyvinyl butyral films, which, in addition to their adhesive properties, exhibit high toughness and high acoustic damping. The interlayer prevents the laminated glass from shattering when damaged. The laminated glass only develops cracks but remains dimensionally stable.

[0006] Vehicles are increasingly equipped with electrical components. In addition to traditional radios, a growing number of vehicles contain devices capable of receiving or transmitting high-frequency signals. These include antennas that exchange data via mobile communication systems, GNSS receivers, or provide direct vehicle-to-vehicle communication or digital audio radio. These requirements necessitate antennas capable of transmitting and receiving signals on different frequency bands. The integration of these antennas into the vehicle is typically determined by performance requirements and aesthetic considerations. The antennas are usually mounted outside the vehicle interior, for example, on the bodywork.

[0007] US patent 20140176374 A1 discloses a so-called shark-fin antenna, whose outer housing is fin-shaped and which contains an antenna element in the form of a metal strip. It is therefore known to arrange navigation antennas in a fin-shaped housing and to mount them on the roof of a vehicle.

[0008] Such antennas are enclosed in a housing with additional electronic components and electrically connected via a cable running through the roof. For optimal performance, these arrangements feature a metallic plate that provides an electrical reference potential and a reflective surface for the antenna. On glass roofs, this metallic plate is disruptive, and it requires significantly more effort in manufacturing and the final product. (SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT)

[0009] 2

[0010] Attaching a plate to a glass roof. Antennas with a metallic plate present a significant obstacle when designing complex curved glass roofs.

[0011] US Patent 2005 / 035913 A1 discloses a disc with two slotted antennas for a motor vehicle, surrounded by a metal frame. The disc also includes a conductive plate. The antennas are arranged between the metal frame and the conductive plate, each having elongated radiation regions and a connection region.

[0012] US 2021 / 234254 A1 describes a slot antenna in heated vehicle glazing, which is located between the heating busbar, the busbar extensions and the circumferential edge of an IR-reflecting coating.

[0013] The object of the present invention is to provide a composite disc arrangement for a vehicle with an antenna which, particularly in the case of glass roofs, offers good antenna performance and no significant impairment of view for an observer and does not have an aesthetically disturbing effect.

[0014] This problem is solved by a composite disc arrangement for a vehicle according to independent claim 1. Preferred embodiments are set forth in the dependent claims.

[0015] The composite disc arrangement according to the invention, including an antenna for a vehicle, comprises a first disc with a first surface and a second surface, and a second disc with a first surface and a second surface. The composite disc arrangement further comprises a thermoplastic intermediate layer that connects the first disc and the second disc to form a composite disc, wherein a first electrically conductive coating is arranged on one of the surfaces of the first disc or the second disc, and a metallic frame surrounds the composite disc at least partially. The composite disc arrangement further comprises a coaxial cable or a coaxial connector, wherein the antenna is arranged on the metallic frame.The antenna base is galvanically connected to the metallic frame via the coaxial cable or coaxial connector, with the metallic frame being electrically connected to the first electrically conductive coating. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT.

[0016] 3

[0017] In an advantageous embodiment of the composite disc arrangement, the coaxial cable can be electrically connected to the antenna, wherein the inner conductor of the coaxial cable is electrically conductive to an antenna conductor of the antenna, and the outer conductor of the coaxial cable is electrically conductively connected to the first electrically conductive coating via the metallic frame. In other words, the outer conductor and the first electrically conductive coating can be galvanically connected. The coaxial cable is intended, in particular, for transmitting signals from the antenna to an electronic unit, for example, a transceiver (receiver) and / or a low-noise amplifier (LNA, LNB). The composite disc arrangement according to the invention enables very good antenna performance and does not obstruct the view for an observer looking through the composite disc, since no metallic plate is present.

[0018] Such a connection of the coaxial cable is advantageous because the arrangement does not require a metallic plate in or on the transparent laminated glass, thus preventing any significant visual impairment for the observer. As the size of glass roofs in automobiles increases and metallic transparent glass coatings for thermal insulation typically cover almost the entire surface, the grounding plate is further enlarged by (co-)utilizing this area, which has a positive effect on the reception characteristics and efficiency of the antennas. At the same time, the performance parameters of the antenna are very good with the laminated glass arrangement according to the invention. By avoiding the metallic plate and utilizing the existing electrically conductive coatings in / on the laminated glass, a great deal of design freedom is achieved, and the manufacturing of the laminated glass arrangement is simplified.

[0019] Preferably, the composite disc has a second electrically conductive coating. This allows for a further improvement in the antenna's reception and transmission characteristics.

[0020] In a further advantageous embodiment of the composite disc arrangement, the first electrically conductive coating can be electrically connected to the metallic frames via a first electrical conductor. Alternatively or additionally, the second electrically conductive coating can be electrically connected to the metallic frames via a second electrical conductor. The outer conductor is also electrically connected to the second electrically conductive coating. In other words, the outer conductor of the coaxial cable and the second electrically conductive coating are galvanically connected. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0021] The four components are coupled together. This significantly increases the reflective surface area for the antenna. An electrical conductor can be designed as a connecting cable, particularly a ribbon cable. The connecting cable comprises the electrical conductor, which is surrounded by an insulating sheath, such as one made of polyvinyl or polyamide. Such a ribbon cable is routed out of the space between the two laminated discs. The electrical conductor can be formed by a metal foil of aluminum or copper, which is bonded to the metallic frame.

[0022] The first electrically conductive coating, and if present, the second electrically conductive coating, can be a highly conductive coating suitable for use as an antenna ground. Preferably, the first electrically conductive coating and / or the second electrically conductive coating are designed as a heatable coating, an antireflective coating, a photocatalytic coating, an infrared-reflecting (IRR) coating, a low-emissivity coating, or as a printed, electrically conductive paste, preferably a silver-containing screen-printing paste. Such electrically conductive coatings can be designed as heatable coatings or as so-called low-emissivity coatings. A low-emissivity coating prevents excessive heating of the vehicle interior.

[0023] In particular, the first electrically conductive coating is transparent. An electrically conductive coating is considered transparent if it has a transmission in the visible spectral range of greater than or equal to 20%. However, the electrically conductive coating can also have a higher transmission, for example, greater than or equal to 35%, or greater than or equal to 50%.

[0024] Depending on the intended use of the first electrically conductive coating, it can be applied to the second surface (side II) of the first disk, the first surface (side III), or the second surface (side IV) of the second disk, particularly over the entire surface. Examples of layer structures that possess both high electrical conductivity and infrared reflective properties are known from WO 2013 / 104439 A1 and WO 2013 / 104438 A1. The electrically conductive coating can contain one or more, for example, two, three, or four, electrically conductive functional layers. The functional layers preferably contain at least one metal, for example, silver, gold, copper, nickel, and / or chromium, or a metal alloy. The functional layers particularly preferably contain at least 90 wt.% of the metal, and in particular at least 99.9 wt.% of the metal.The functional SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT.

[0025] 5

[0026] Individual layers can consist of the metal or a metal alloy. The functional layers preferably contain silver or a silver-containing alloy. Such functional layers exhibit particularly advantageous electrical conductivity combined with high transmission in the visible spectral range. The thickness of a functional layer is preferably from 5 nm to 50 nm, and particularly preferably from 8 nm to 25 nm. In this thickness range, advantageously high transmission in the visible spectral range and particularly advantageous electrical conductivity are achieved.

[0027] The surface resistance of the first and / or second electrically conductive coating is preferably from 0.1 ohms / square to 200 ohms / square [Q / a], preferably from 0.5 ohms / square to 200 ohms / square, most preferably from 0.6 ohms / square to 30 ohms / square, and particularly from 2 ohms / square to 20 ohms / square.

[0028] Alternatively or additionally, the first electrically conductive coating and / or the second electrically conductive coating can be a silver-containing screen-printing paste or an electrically conductive conductor, preferably made of metal, and in particular copper, silver, gold, or aluminum. Copper has proven suitable for such conductors due to its good electrical conductivity. At the same time, copper is inexpensive to use. For example, the first electrically conductive coating and / or the second electrically conductive coating can then be disc-shaped.

[0029] In a further advantageous embodiment of the composite disc arrangement, the first electrically conductive coating and / or the second electrically conductive coating occupies less than 10%, preferably less than 5%, of the second surface (side IV) of the second disc. This is particularly preferred if the first electrically conductive coating and / or the second electrically conductive coating are formed from the silver-containing screen printing paste or as an electrically conductive conductor, preferably made of metal and in particular of copper, silver, gold, or aluminum.

[0030] Preferably, the first electrically conductive coating is designed to generate capacitive coupling with the metallic frame. In particular, when the antenna receives or transmits a signal, capacitive coupling can form between the first conductive coating and the metallic frame. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0031] 6

[0032] For example, the first electrically conductive coating or a carrier film with the first electrically conductive coating can be

[0033] • on the first surface (side I) of the first disk,

[0034] • on the second surface (side II) of the first disk,

[0035] • on the second surface (side III) of the second disk or

[0036] • be arranged on the second surface (side VI) of the second disk. Alternatively or additionally, the second electrically conductive coating can be arranged on the second surface (side VI) of the second disk.

[0037] When the first electrically conductive coating is arranged on a carrier film, it can be embedded between two thermoplastic intermediate layers and positioned on a surface of the two discs via an additional intermediate layer. The carrier film preferably contains a polymer, in particular polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET), or combinations thereof.

[0038] In a further embodiment of the composite disc arrangement, the composite disc is bonded to the metallic frame by means of an adhesive, the metallic frame being part of the vehicle body. Furthermore, the metallic frame provides an electrical reference potential, in particular ground, for the antenna. The metallic frame preferably has a recess with a diameter of less than 20 mm, particularly preferably less than 10 mm, through which the coaxial cable passes. The recess is designed as a through-hole, which is defined as a hole extending from the first surface (inner side) of the metallic frame to the second surface (outer side) of the metallic frame and completely penetrating the metallic frame. Preferably, the recess is a drilled hole.

[0039] The laminated glass may have a cover layer, particularly an opaque one, on the second surface (side IV) of the second pane. When viewed perpendicularly through the second surface (side IV) of the second pane, the second electrically conductive coating is concealed by the cover layer. Cover layers are common for vehicle windows outside the central field of vision to conceal add-on parts or to protect the adhesive bonding the vehicle window to the body from UV radiation. The cover layer consists of a black or dark enamel applied by screen printing and baked on. The cover layer completely surrounds the SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT.

[0040] 7

[0041] Visible area of ​​the vehicle window to conceal the silver-containing screen printing paste, electrically conductive conductors or adhesive behind it.

[0042] The cover layer can also be applied to the second surface of the first pane or the first surface of the second pane. In this case, the cover layer faces the thermoplastic intermediate layer. This protects the cover layer from external weathering. The cover layer can be applied directly or indirectly to the pane surface.

[0043] The cover layer is optionally widened in at least one area. This means that the cover layer has a greater width perpendicular to the nearest section of a circumferential edge of the composite panel than in other sections. The cover layer is preferably formed around the perimeter of the composite panel in the edge region, and its width may vary.

[0044] The cover layer, as defined in the invention, is a layer that prevents visibility through the composite pane. This layer allows a transmission of at most 5%, preferably at most 2%, particularly preferably at most 1%, and especially at most 0.1% of the visible spectrum light through the cover layer. The cover layer can be solid or, alternatively, semi-transparent, for example, as a dot matrix, stripe matrix, or grid. Additionally, the cover layer can have a gradient, for example, from an opaque layer to a semi-transparent layer. Such cover layers are also referred to as screen printing or black print.Alternatively or additionally, the thermoplastic intermediate layer can also be used to cover the view of the silver-containing screen printing paste, the electrically conductive conductors or the adhesive by means of appropriate coloring in the edge area.

[0045] In a particularly advantageous embodiment of the invention, the antenna is designed as a fin antenna, wherein the fin antenna comprises a circuit board with an antenna element and a fin-shaped housing. This particularly robust design allows the antenna to be positioned on the metallic frame, for example, near the vehicle roof, thus enabling a very favorable line of sight to the nearest antenna mast of a mobile network or satellite. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0046] 8

[0047] The antenna can be designed to receive signals from a communication system. Communication systems can include, for example, short-range radio systems for car-to-car (V2V), car-to-infrastructure, or mobile communication systems, such as 2nd, 3rd, 4th, 5th, or 6th generation mobile communication systems, satellite-based digital radio systems, analog and digital broadcasting systems, GNSS (global navigation satellite systems), or WLAN networks (WiFi). The antenna can be configured, for example, as a patch antenna, monopole antenna, dipole antenna, or slot antenna. In a further embodiment of the invention, the composite disk arrangement can comprise multiple antennas.

[0048] In a particularly preferred embodiment of the composite disc arrangement according to the invention, the composite disc is designed as a roof disc, a rear disc, a side disc or a front disc of a vehicle.

[0049] The thickness of the first and / or second pane can vary widely and thus be ideally adapted to the requirements of the individual case. Standard thicknesses of 1.0 mm to 25 mm are preferably used, and more preferably 1.4 mm to 2.5 mm for vehicle glass. The size of the panes can vary widely and depends on the size of the application according to the invention. The first and second panes, for example, have areas of 200 cm², which are common in vehicle construction. 2 up to 2 m 2 on.

[0050] The composite disc can have any three-dimensional shape. Preferably, the three-dimensional shape has no shadowed areas, so that it can be coated with further coatings, for example, by cathode sputtering. Preferably, the discs are planar or slightly or strongly curved in one or more directions. Planar substrates are particularly well-suited. The discs can be colorless or colored.

[0051] The first and second panes preferably contain or consist of glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, aluminosilicate glass, or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and / or mixtures thereof. The first and second panes can be clear and colorless, but also tinted or colored.

[0052] The first and second panes are bonded together by at least one intermediate layer. The intermediate layer is preferably transparent or tinted or SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0053] 9. The intermediate layer preferably contains or consists of at least one plastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), and / or polyethylene terephthalate (PET). However, the intermediate layer can also contain, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resin, casting resins, acrylates, fluorinated ethylene propylenes, polyvinyl fluoride, and / or ethylene tetrafluoroethylene, or copolymers or mixtures thereof. The intermediate layer can be formed by one or more films arranged one above the other, the thickness of each film preferably being from 0.025 mm to 1 mm, typically 0.38 mm or 0.76 mm. The intermediate layers can preferably be thermoplastic and, after lamination, bond the first disc, the second disc, and any further intermediate layers together.Particularly advantageous are so-called acoustic-damping intermediate layers, which preferably consist of three layers of PVB, with the middle layer being softer than the two outer layers.

[0054] The intermediate layer can also be a functional intermediate layer, in particular an infrared-reflecting intermediate layer, an infrared-absorbing intermediate layer, a UV-absorbing intermediate layer, an intermediate layer that is at least partially colored, and / or an intermediate layer that is at least partially tinted. For example, the thermoplastic intermediate layer can also be a bandpass filter film.

[0055] The terms "first pane" and "second pane" are chosen to distinguish between the two panes in a composite pane according to the invention. These terms do not imply anything about the geometric arrangement. If, for example, the composite pane according to the invention is intended to separate the interior from the external environment in an opening, such as in a vehicle, the first pane can face either the interior or the external environment. Preferably, the first pane, as the outer pane, faces the external environment.

[0056] The first disc and / or the second disc may have further suitable, known coatings, for example anti-reflective coatings, non-stick coatings or anti-scratch coatings.

[0057] Furthermore, the composite disc can incorporate additional functional elements, in particular light sources (LEDs) and electronically controllable optical elements, for example electro-optical functional elements (SPD = Suspended Particle Device, which are made, for example, from SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0058] 10

[0059] EP 0876608 B1 and WO 2011033313 A1 are known or PDLC (Polymer Dispersed Liquid Crystal), electrochromic elements or similar, which are typically arranged between the first disk and the second disk.

[0060] The bonding of the first and second panes to form a composite pane via the thermoplastic interlayer is preferably achieved by lamination. The thermoplastic interlayer is preferably provided as a film. The composite pane is produced by lamination using conventional methods known to those skilled in the art, such as autoclave processes, vacuum bag processes, vacuum ring processes, calender processes, vacuum laminators, or combinations thereof. The bonding of the first and second panes occurs under the influence of heat, vacuum, and / or pressure.

[0061] Another aspect of the invention relates to a vehicle comprising a composite glass arrangement according to the invention, wherein the first glass is designed as an outer glass pane of the vehicle and the metallic frame is designed as part of the vehicle's body. Furthermore, the antenna is arranged on an outer surface of the metallic frame and the coaxial cable projects into a recess in the metallic frame.

[0062] The laminated glass is designed to separate the interior from the outside environment in a window opening, particularly a vehicle window opening. For the purposes of this invention, the term "inner pane" refers to the pane of the laminated glass facing the interior. The term "outer pane" refers to the pane facing the outside environment.

[0063] Another aspect of the invention includes the use of a composite glass arrangement according to the invention as vehicle glazing in means of transport for traffic on land, in the air or on water, preferably as vehicle glazing in rail vehicles or motor vehicles, in particular as vehicle glazing of passenger cars.

[0064] The embodiments of the composite disc arrangement described above also apply accordingly to the vehicle with a composite disc arrangement according to the invention. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0065] 11

[0066] The invention is explained in more detail below with reference to figures and exemplary embodiments. The figures are schematic representations and not to scale. The figures do not limit the invention in any way. It should be noted that different aspects are described, each of which can be used individually or in combination. That is, each aspect can be used with different embodiments of the invention, unless explicitly presented as a pure alternative.

[0067] They show:

[0068] Figure 1A is a cross-sectional view of a [component] according to the invention.

[0069] Composite disc arrangement

[0070] Figure 1B shows another cross-sectional view of a [component] according to the invention.

[0071] Composite disc arrangement

[0072] Figure 2 shows a further embodiment of the composite disc arrangement,

[0073] Figure 3 shows a further embodiment of the composite disc arrangement,

[0074] Figure 4 shows a further embodiment of the composite disc arrangement,

[0075] Figure 5 shows a further embodiment of the composite disc arrangement,

[0076] Figure 6 shows a further embodiment of the composite disc arrangement,

[0077] Figure 7 shows a further embodiment of the composite disc arrangement,

[0078] Figure 8 shows the composite disc arrangement according to the invention from Figure

[0079] 1A in top view,

[0080] Figure 9 shows a further embodiment of the invention

[0081] Composite disc arrangement in top view, and

[0082] Figure 10A and Figure 10B show a plot of the directional characteristic of the antenna in a side view of the composite disk arrangement.

[0083] Specifications with numerical values ​​are generally not to be understood as exact values, but also include a tolerance of + / - 1% to + / - 10%. Identical or equivalent elements are designated with the same reference symbol.

[0084] Figure 1A shows a cross-sectional view of a first embodiment of the composite disc assembly 101 for a vehicle with an antenna 4. The composite disc assembly 101 comprises a first disc 1 with a first surface I and a second surface II, and a second disc 2 with a first surface III and a second surface IV. Furthermore, the composite disc assembly 101 comprises a thermoplastic intermediate layer 3, which connects the first disc 1 and the second disc 2.

[0085] 12 of a composite pane 10 are connected to each other. The composite pane 10 is intended to separate an interior space 12 of the vehicle from an external environment 13 within a window opening of the vehicle. For the sake of simplicity, the composite pane 10 is shown as planar, although roof panes are typically curved in reality.

[0086] A first electrically conductive coating 6 is arranged on the second surface II of the first disk 1. The second surface II of the first disk 1 faces the intermediate layer 3. The first surface III of the second disk 2 also faces the intermediate layer 3. A metallic frame 9 surrounds the composite disk 10, at least partially. The composite disk 10 is bonded to the metallic frame 9 by means of an adhesive 11. The metallic frame 9 is part of the vehicle body. The antenna 4 is arranged on the metallic frame 9. Furthermore, the metallic frame 9 establishes an electrical reference potential, in particular a ground potential, for the antenna 4.

[0087] The first electrically conductive coating 6 can be an IRR coating. The electrically conductive coating 6 can contain one or more, for example, two, three, or four, electrically conductive functional layers. The functional layers preferably contain at least one metal, for example, silver, gold, copper, nickel, and / or chromium, or a metal alloy. The functional layers particularly preferably contain silver or a silver-containing alloy. Such functional layers exhibit particularly advantageous electrical conductivity combined with high transmission in the visible spectral range. The thickness of a functional layer is preferably from 5 nm to 50 nm, and particularly preferably from 8 nm to 25 nm. The first electrically conductive coating 6 is applied over a large area to the second surface II of the first disk 1.The first electrically conductive coating 6 is transparent to visible light.

[0088] The composite disk assembly 101 further comprises a coaxial cable 5, which includes an inner conductor 5.1, an outer conductor 5.2, an insulator arranged between the inner conductor 5.1 and the outer conductor 5.2, and a sheath arranged on the outer conductor 5.2. The antenna 4 is arranged on the metallic frame 9. The coaxial cable 5 is electrically connected to the antenna 4, with the inner conductor 5.1 of the coaxial cable 5 being electrically connected to an antenna conductor 4.1 of the antenna 4. The outer conductor 5.2 of the coaxial cable 5 is electrically connected to the first electrically conductive coating 6 via the metallic frame 9 and an electrical conductor 9.2. In other words, the outer conductor 5.2 and the first electrically conductive SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0089] 13

[0090] The coating 6 is galvanically connected or coupled to each other. The coaxial cable 5 transmits the signals received and sent by the antenna 4 to an electronic unit, for example a transceiver (receiver) or low-noise amplifier (LNA, LNB).

[0091] The composite disk 10 has a second electrically conductive coating 7 on the second surface IV of the second disk 2. The second electrically conductive coating 7 is electrically connected to the metallic frame via a second electrical conductor 9.2. The outer conductor 5.2 is electrically connected to the second electrically conductive coating 7. In other words, the outer conductor 5.2 of the coaxial cable 5 and the second electrically conductive coating 7 are galvanically connected. This allows for a further improvement in the antenna's reception and transmission characteristics. The second electrically conductive coating 7 is disk-shaped and made of a silver-containing screen-printing paste or a copper-containing material. Alternatively or additionally, the second electrically conductive coating 7 can be a patch element 7.1 be formed which adheres to the second surface IV of the second disk 2 via an adhesive bond.

[0092] The first pane 1 and the second pane 2 are made of soda-lime glass. The first pane 1, for example, has a thickness of 2.1 mm, and the second pane 2 has a thickness of 1.6 mm. The intermediate layer 3 is, for example, made of a PVB film with a thickness of 0.76 mm. The thermoplastic intermediate layer 3 is a polyvinyl butyral film with a thickness of 0.76 mm, measured before a lamination process.

[0093] The first pane 1 can be designed as an outer pane and the second pane 2 as an inner pane. The outer pane is the pane that, in its installed position, is intended to face the external environment 13. The inner pane is the pane that, in its installed position, is intended to face the interior 12.

[0094] The metallic frame 9 preferably has a recess 9.1, which, for example, has a diameter of 8 mm. The coaxial cable 5 passes through the recess 9.1 into the interior 12 of the vehicle. The recess 9.1 is designed as a through-opening. The contour of the recess 4 is circular. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0095] 14

[0096] The second surface IV of the second pane 2 has an opaque cover layer 8 at least in one edge region of the composite pane 10. The opaque cover layer 8 is applied in a frame-like manner in the surrounding edge region. The edge region and the cover layer 8 can have a width of approximately 20 mm to 200 mm. The cover layer 8 is opaque and, when viewed perpendicularly from the interior 12, obscures the view of the patch element 7.1.

[0097] The electrical conductor 9.2 is configured as a connecting cable, in particular a ribbon cable. The connecting cable comprises the electrical conductor 9.2, which is surrounded by an insulating sheath, such as one made of polyvinyl or polyamide. Such a ribbon cable extends from the space between the two laminated discs. The electrical conductor 9.2 can be formed by a metal foil of aluminum or copper, which is bonded to the metallic frame 9.

[0098] Figure 1B shows a further embodiment of the composite disk arrangement 101. The embodiment of the composite disk arrangement 101 shown in Figure 1B essentially corresponds to the composite disk arrangement 101 according to the embodiment of Figure 1A, wherein an antenna base 4.2 of the antenna 4 is galvanically connected to the metallic frame 9. The antenna base 4.2 can have a coaxial connector 14. The antenna base 4.2 is connected to the metallic frame 9 via the coaxial connector 14, meaning that a coaxial cable 5 is not strictly necessary. Alternatively or additionally, the coaxial cable 5 can connect the antenna base 4.2 to the metallic frame 9 via the coaxial connector 14.

[0099] Figure 2 shows a further embodiment of the composite disk arrangement 101. The embodiment of the composite disk arrangement 101 shown in Figure 2 corresponds essentially to the composite disk arrangement 101 according to the embodiment of Figure 1A. In contrast, the composite disk 10 does not have an electrically conductive connection between the second electrically conductive coating 7 and the metallic frame 9. The second electrically conductive coating 7 is formed from a low-E coating and is applied to the second surface IV of the second disk 2 (inner disk). The outer conductor 5.2 of the coaxial cable 5 is not galvanically connected to the second electrically conductive coating 7. The second electrically conductive coating 7 is applied over a large area on the second surface IV of the second disk 2. The first electrically conductive coating 6 is also connected via the electrical conductor 9.2 conductively connected to the metallic frame 9. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT.

[0100] 15

[0101] Figure 3 shows a further embodiment of the composite disk arrangement 101. The embodiment of the composite disk arrangement 101 shown in Figure 3 corresponds essentially to the composite disk arrangement 101 according to the embodiment of Figure 2. The second electrically conductive coating 7 is arranged on the second surface 11 of the first disk 1. The composite disk 10 has no electrically conductive connection between the second electrically conductive coating 7 and the metallic frame 9. The first electrically conductive coating 6 is formed from a low-E coating and is applied to the second surface IV of the second disk 2 (inner disk). The outer conductor 5.2 of the coaxial cable 5 is galvanically connected to the first electrically conductive coating 6 via the metallic frame 9 and the electrical conductor 9.2.The first electrically conductive coating 6 is applied over a large area to the second surface IV of the second disk 2.

[0102] Figure 4 shows a further embodiment of the composite disc arrangement 101. The embodiment of the composite disc arrangement 101 shown in Figure 4 corresponds essentially to the composite disc arrangement 101 according to the embodiment of Figure 3. In contrast, the composite disc 10 has no coating on the second surface II of the first disc 1.

[0103] The first electrically conductive coating 6 is formed from a low-E coating and applied to the second surface IV of the second disk 2 (inner disk). The outer conductor 5.2 of the coaxial cable 5 is galvanically connected to the first electrically conductive coating 6 via the metallic frame 9. The second electrically conductive coating 7 is not present.

[0104] Figure 5 shows a further embodiment of the composite disk arrangement 101. The embodiment of the composite disk arrangement 101 shown in Figure 5 corresponds essentially to the composite disk arrangement 101 according to the embodiment of Figure 4. In contrast, the composite disk 10 has the patch element 7.1 on the first electrically conductive coating 6 on the second surface IV of the second disk. The patch element 7.1 is formed in a disk shape from a silver-containing screen-printing paste or from a copper-containing material. The patch element 7.1 and the first electrically conductive coating 6 have the same electrical reference potential as the metallic frame 9 and the outer conductor 5.2 of the coaxial cable 5. Between SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0105] The electrical conductor 9.2 is arranged between the patch element 7.1 and the metallic frame 9. It galvanically connects the patch element 7.1 and the metallic frame 9.

[0106] The composite disc 10 also has the first electrically conductive coating 6 and the cover layer 8. The first electrically conductive coating 6 is a low-E coating. The opaque cover layer 8 obscures the view of the patch element 7.1 when viewed perpendicularly from the interior 12.

[0107] Figure 6 shows a further embodiment of the composite disc assembly 101. The embodiment of the composite disc assembly 101 shown in Figure 6 corresponds essentially to the composite disc assembly 101 according to the embodiment of Figure 5. In contrast, the composite disc 10 has the first electrically conductive coating 6 on the second surface II of the first disc 1. The patch element 7.1 is not present in the composite disc assembly 101 according to Figure 6. The first electrically conductive coating 6 is connected to the metallic frame 9 via the electrical conductor 9.2. The contact of the electrical conductor 9.2 with the metallic frame takes place in the interior 12 of a vehicle. The electrical conductor 9.2 extends from the interior 12 of the vehicle through the adhesive 11 to the second surface II of the first disc 1.The first electrically conductive coating 6 is an IRR coating that covers a large area of ​​the second surface II of the first disk 2.

[0108] Figure 7 shows a further embodiment of the composite disc arrangement 101. The embodiment of the composite disc arrangement 101 shown in Figure 7 corresponds essentially to the composite disc arrangement 101 according to the embodiment shown in Figure 6. In contrast, the composite disc 10 has the first electrically conductive coating 6 in the form of a patch element on the second surface IV of the second disc 2. The patch element is formed in a disc shape from a silver-containing screen-printing paste or a copper-containing material. It adheres to the second surface IV of the second disc 2. The patch element is electrically connected to the metallic frame 9 via an electrical conductor 9.2. The second electrically conductive coating 7 is an IRR coating that covers a large area of ​​the second surface II of the first disc 1 (outer disc).There is no galvanic connection between the second electrically conductive coating 7 and the metallic frame 9. Because the second electrically conductive coating 7 has no galvanic connection with the metallic frame 9, the second electrically conductive coating 7 and the metallic frame are capacitively coupled to the patch element. The second electrically conductive coating 7 is SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT.

[0109] 17 designed to create capacitive coupling with the metallic frame, especially when the antenna receives or transmits a signal, the capacitive coupling can form between the second conductive coating 7 and the metallic frame 9.

[0110] The second surface IV of the second pane 2 has an opaque cover layer 8 at least in one edge region of the composite pane 10. The opaque cover layer 8 is applied in a frame-like manner in the surrounding edge region. The edge region and the cover layer 8 can have a width of approximately 20 mm to 200 mm. When viewed perpendicularly from the interior 12, the cover layer 8 obscures the view of the patch element.

[0111] Figure 8 shows the composite glass assembly 101 according to the invention from Figure 1A in a top view, as seen from the interior 12 of the vehicle, looking at the composite glass 10 as a roof window. The composite glass assembly 101 comprises the composite glass 10, the metallic frame 9, and the antenna 4. The second electrically conductive coating 7 is arranged as a square patch element on the second surface. The patch element can have an area with an edge length of 8 cm, 10 cm, or 12 cm. The second electrically conductive coating 7 can be covered by the cover layer 8 and thus not be visible from the interior 12. The composite glass 10 is designed to separate the interior 12 of the vehicle from an external environment 13 in the window opening. A rear window 14 is also shown. The rear window 14 is connected to the composite glass 10 via the metallic frame 9.

[0112] Figure 9 shows a further embodiment of the composite disc arrangement 101. The embodiment of the composite disc arrangement 101 shown in Figure 9 corresponds essentially to the composite disc arrangement 101 according to the embodiment of Figure 8. In contrast, the second electrically conductive coating 7 has a significantly larger form. The second electrically conductive coating 7 is arranged as an elongated patch element on the second surface IV of the second disc 2. The patch element can have an area with an edge length of 50 cm, 80 cm, or 100 cm. The second electrically conductive coating 7 can be covered by the cover layer 8 and thus not be visible from the interior 12.

[0113] Figure 10A shows simulation models of the composite disk arrangement according to the invention with the electrically conductive coating and, in comparison, a composite disk without such a coating, demonstrating that there is no significant change in the resonance frequency. SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0114] 18

[0115] However, there is a noticeable difference in the antenna's directional characteristics. The plot shown in Figure 10A depicts a side view of the composite disk arrangement 101 with the antenna's directional characteristics when cut at an angle Phi of 0 degrees. The plot shown in Figure 10B depicts a side view of the composite disk arrangement 101 with the antenna's directional characteristics when cut at an angle Phi of 90 degrees.

[0116] Simulation models of the composite disk arrangement according to the invention, particularly as shown in Figure 7, have revealed that such an arrangement significantly improves the antenna's directivity. In the configuration of the composite disk arrangement according to Figure 7, capacitive coupling occurs between the patch element 6 and the second electrically conductive coating 7 on the second surface II of the first disk 1. There is no galvanic connection between the second electrically conductive coating 7 and the metallic frame 9. This significantly increases the reference potential area, especially when the second electrically conductive coating 7 almost completely covers the second surface II of the first disk 1. The simulation models have shown that the antenna performance is significantly improved. In particular, the antenna's directional characteristic is omnidirectional and better suited for good communication service under all reception conditions.

[0117] A particular advantage of the invention is that the additional manufacturing effort and the visual obstruction caused by a bothersome metallic plate on the glass roof are eliminated. For the observer (vehicle occupant), this results in an aesthetically pleasing overall appearance of a roof panel.

[0118] SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT

[0119] 19

[0120] Reference symbol list:

[0121] 1 first disc

[0122] 2 second disc

[0123] 3 Intermediate layer

[0124] 4 antennas

[0125] 4.1 Antenna cable

[0126] 4.2 Antenna base

[0127] 5 coaxial cable

[0128] 5.1 Inner conductor of the coaxial cable 5

[0129] 5.2 Outer conductor of the coaxial cable 5

[0130] 6. First electrically conductive coating

[0131] 7 second electrically conductive coating

[0132] 7.1 Patch Element

[0133] 8 Cover layer

[0134] 9 metallic frames

[0135] 9.1 Recess

[0136] 9.2 electrical conductor

[0137] 10 Composite disc

[0138] 11 Adhesive

[0139] 12 Interior of a vehicle

[0140] 13 external environment of a vehicle

[0141] 14 coaxial connectors

[0142] I first surface of the first disk 1

[0143] II second surface of the first disk 1

[0144] III first surface of the second disk 2

[0145] IV first surface of the second disk 2

Claims

SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT 20 Patent claims 1. Composite disc arrangement (101) for a vehicle with an antenna (4), comprising • a first disk (1) with a first surface (I) and a second surface (II), • a second disk (2) with a first surface (III) and a second surface (IV), • a thermoplastic intermediate layer (3) which joins the first disk (1) and the second disk (2) together to form a composite disk (10), • a first electrically conductive coating (6) arranged on one of the surfaces (I, II, III, IV) of the first disk (1) or the second disk (2), • a metallic frame (9) that surrounds the composite disc (10) at least in sections, • a coaxial cable (5) and / or a coaxial connector (14), wherein the antenna (4) has an antenna conductor (4.1) and an antenna base (4.2) and the antenna (4) is arranged on the metallic frame (9), wherein the antenna base (4.2) is galvanically connected to the metallic frame (9) via the coaxial cable and / or the coaxial connector (14) and wherein the metallic frame (9) is electrically connected to the first electrically conductive coating (6).

2. Composite disc arrangement (101) according to claim 1, wherein the coaxial cable (5) comprises an inner conductor (5.1), an outer conductor (5.2), an insulator arranged between the inner conductor (5.1) and the outer conductor (5.2), and a sheath arranged on the outer conductor (5.2), and the coaxial cable (5) is electrically connected to the antenna (4), wherein the inner conductor (5.1) is electrically connected to the antenna conductor (4.1) of the antenna (4), and the outer conductor (5.2) is electrically connected to the first electrically conductive coating (6) via the metallic frame (9).

3. Composite disc arrangement (101) according to claim 1 or 2, wherein the composite disc (10) has a second electrically conductive coating (7). SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT 21 4. Composite disc arrangement (101) according to claim 3, wherein the outer conductor (5.2) is electrically connected to the second electrically conductive coating (7).

5. Composite disc arrangement (101) according to one of claims 1 to 4, wherein the first electrically conductive coating (6) is electrically connected to the metallic frames (9) via a first electrical conductor (9.2).

6. Composite disc arrangement (101) according to one of claims 3 to 5, wherein the second electrically conductive coating (7) is electrically connected to the metallic frames (9) via a second electrical conductor (9.2).

7. Composite disc arrangement (101) according to one of claims 1 to 6, wherein the first electrically conductive coating (6) and / or the second electrically conductive coating (7) are designed as a heatable, an anti-reflective coating, a photocatalytic coating, a solar control coating, a low-emissivity coating or as a printed, electrically conductive paste, preferably a silver-containing screen printing paste or as an electrically conductive conductor, preferably made of metal and in particular of copper, silver, gold or aluminium.

8. Composite disc arrangement (101) according to one of claims 3 to 7, wherein the second electrically conductive coating (7) is configured to generate a capacitive coupling with the metallic frame (9).

9. Composite disc arrangement (101) according to any one of claims 1 to 8, wherein the first electrically conductive coating (6) and / or the second electrically conductive coating (7) occupies less than 10%, preferably less than 5% of the second surface (IV) of the second disc (2).

10. Composite disc arrangement (101) according to one of claims 1 to 9, wherein the first electrically conductive coating (6) and / or the second electrically conductive coating (7) are transparent to visible light.

11. Composite disc arrangement (101) according to one of claims 1 to 10, wherein the first electrically conductive coating (6) is arranged on the second surface (II) of the first disc (1). SAINT-GOBAIN SEKURIT FRANCE 2024277-WO-PCT 22 12. Composite disc arrangement (101) according to one of claims 3 to 11, wherein the second electrically conductive coating (7) is arranged on the second surface (VI) of the second disc (2).

13. Composite disc arrangement (101) according to one of claims 1 to 12, wherein the metallic frame (9) is designed as part of a body of the vehicle.

14. Composite disc arrangement (101) according to one of claims 1 to 13, wherein the metallic frame (9) has a recess (9.1), preferably with a diameter of less than 20 mm, particularly preferably less than 10 mm, through which the coaxial cable (5) is passed.

15. Composite disc arrangement (101) according to one of claims 1 to 14, wherein the composite disc (10) has an opaque cover layer (8) on the second surface (IV) of the second disc (2), wherein, when viewed perpendicularly through the second surface (IV) of the second disc (2), the first electrically conductive coating (6) and / or the second electrically conductive coating (7) is covered by the cover layer (8).

16. Composite disc arrangement (101) according to one of claims 1 to 15, wherein the metallic frame (9) forms an electrical reference potential.

17. Composite disk arrangement (101) according to one of claims 1 to 16, wherein the antenna (4) is provided for receiving signals of a mobile communications network of the 1st generation, 2nd generation, 3rd generation, 4th generation, 5th generation, 6th generation, a WLAN network, a car-to-car network (V2V) and / or a car-to-infrastructure network.

18. Composite window arrangement (101) according to any one of claims 1 to 17, wherein the composite window (10) is designed as a roof window, a rear window, a side window or a front window of a vehicle.

19. Vehicle comprising a composite glass arrangement (10) according to any one of claims 1 to 18, wherein the first glass (1) is designed as an outer glass of the vehicle and the metallic frame (9) is designed as a part of the body of the vehicle, wherein the antenna (4) is arranged on an outer surface of the metallic frame (9) and the coaxial cable (5) projects into a recess (9.1) of the metallic frame (9).

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