Flat conductor connection element for a conductor structure of a pane

Abstract

The invention relates to a flat conductor connection element (1) for electrical connection to a conductor structure (103) applied to a pane (101), the flat conductor connection element comprising - a flat conductor (2) having at least one conductor track (3) which is electrically divided by an interruption (6) into a first conductor track section (7) and a second conductor track section (8), and - an electrical flat component (10) which is integrated into the flat conductor (2) and has a housing (11) having a first electrical external connection (13) and having a second electrical external connection (14), wherein: a coil (12) which is connected to the two electrical external connections (13, 14) is arranged in the housing (11); the housing (11) has a prismatic shape, in particular a cuboidal shape, or a cylindrical shape; the housing (11) has a housing base surface (15); the two electrical external connections (13, 14) are arranged on the housing base surface (15); the flat component (10) is mounted with the housing base surface (15) onto the conductor track (3) so as to physically bridge the interruption (6); and the first electrical external connection (13) is electrically connected by soldering to the first conductor track section (7) and the second electrical external connection (14) is electrically connected by soldering to the second conductor track section (8), such that the coil (12) is connected to the two conductor track sections (7, 8) in series.

Description

[0001] Flat conductor connection element for conductor structure of a disc

[0002] The invention relates to a flat conductor connection element for a conductor structure applied to a disk, a disk arrangement with a disk and a conductor structure applied thereon and a flat conductor connection element according to the invention, as well as a method for producing the disk arrangement according to the invention and the use of the disk arrangement according to the invention.

[0003] Flexible flat conductors, also called ribbon conductors or foil conductors, are often used in vehicle construction to enable electrical contact in confined spaces.

[0004] Flat conductors typically comprise a tinned copper strip with a thickness of less than 0.1 mm and a width of 2 mm to 16 mm. Copper has proven itself as a suitable conductor for such conductors because of its good electrical conductivity, its easy processability into foils, and its low material costs. Other electrically conductive materials that can be processed into foils can also be used. Examples include gold, silver, aluminum, or tin. The tinned copper strip can be applied to a plastic carrier material or laminated to it on both sides for electrical insulation and stabilization. A flat conductor can also contain several electrically insulated conductor tracks. Flat conductors are known, for example, from EP 1153801 A2, DE 102007059818 B3, WO 01 / 56334 A1, or WO 2016 / 104137 A1.

[0005] In automotive engineering, flat conductors are used, for example, for electrically contacting electrical functional layers in laminated glass panes. Examples can be found in DE 4235063 A1, DE 202004019286 U1, and DE 9313394 U1. The use of flat conductors for electrically contacting electrical functional layers is not limited to the automotive sector. As is known from DE 19960450 C1, flat conductors are also used in the construction sector.

[0006] As a rule, the window manufacturer requires a prefabricated window assembly comprising a window and a conductor structure applied to it, as well as a flat conductor connection element electrically connected to the conductor structure and having a connection area for connection to a supply voltage for the electrical supply of the conductor structure and / or control electronics for controlling / regulating the conductor structure. In vehicle construction, it is common practice to partially metalize the surface of the window to form a flat conductor structure, for example by means of a silver print, in order to heat vehicle windows, particularly rear windows. The conductor structure typically comprises metallic conductor tracks that heat up due to current flow when an electrical voltage is applied to them. Electrical contact between the metallic conductor tracks is achieved, for example, by means of a soldered flat conductor.

[0007] It is a well-known problem that high-frequency interference signals, also known as "high-frequency noise," can be received via the conductor structure, which acts as an antenna, and coupled into the flat conductor. Furthermore, the flat conductor itself can also act as an antenna. These high-frequency interference signals can have a very detrimental effect on the vehicle electrical system and, in particular, can reach an antenna amplifier, which is usually connected downstream of a vehicle antenna to receive antenna signals. This can severely disrupt antenna reception.

[0008] To prevent this, it is common practice to interrupt the electrical supply to the vehicle's window heating system with an interference suppressor in the form of a coil, e.g., a copper wire coil with a ferrite core. The coil has a strong attenuation effect on high-frequency interference signals, which are typically above 1 MHz.

[0009] DE 202011109444 U1 and DE 202018106646 U1 each show a connection element with a contact bridge, which is soldered to the conductor structure of the vehicle window heater with two contact feet. The contact element comprises a coil as an interference suppression element, one end of which is electrically connected to the contact bridge, with the other end of the coil providing an electrical connection to the vehicle electrical system.

[0010] A disadvantage of these solutions is the relatively large dimensions of the coil arranged on the contact bridge and thus in the area of ​​the window surface. In practice, coils used as interference suppressors often have a diameter of 15 mm and a length of 30 mm. This generally increases the space required and the weight of the vehicle window, which must be taken into account particularly when integrating the vehicle window into the respective vehicle environment and can be accompanied by certain restrictions. In addition, the increased space requirement also affects the handling and transport as well as the packaging of the vehicle window, whereby there is also a risk of damage to the vehicle window by the coil. In addition, automating the assembly of the contact bridge and coil is difficult to implement, which increases the manufacturing costs of the vehicle window.

[0011] EP 0608554 B1 shows a connection element with an outer section of a metal foil strip, which is designed like a printed circuit board or in the form of a circuit board and is provided with electronic components. WO 2017 / 186360 shows a ribbon cable with an integrated control unit designed in the form of a circuit board.

[0012] In contrast, the object of the present invention is to provide an improved flat conductor connection element and an improved disk assembly comprising a disk and a conductor structure applied thereto, as well as a flat conductor connection element for electrically connecting to the conductor structure. In particular, the disk with the flat conductor connection element should require less space and be lighter than conventional solutions, thus improving handling, transport, and packaging of the disk assembly. Furthermore, cost-effective and automated production of the disk with the flat conductor connection element in industrial series production should be enabled.

[0013] These and other objects are achieved according to the invention by a flat conductor connection element for electrically connecting to a conductor structure applied to a pane. Preferred embodiments are set forth in the dependent claims. A pane arrangement according to the invention with a conductor structure applied to a pane, which has such a flat conductor connection element, as well as a method for producing the pane arrangement according to the invention and the use of the pane arrangement according to the invention are set forth in the independent claims.

[0014] The invention shows a flat conductor connection element for electrical connection to a conductor structure applied to a disk. The conductor structure is applied to a disk surface, for example, directly or directly.

[0015] The flat conductor connection element comprises a flat conductor with at least one conductor track. The flat conductor is designed such that its width is significantly greater than its thickness. The flat conductor is preferably designed to be so thin (i.e. the thickness is so small) that it is flexible and bendable. The flat conductor has a first connection region at a first end and a second connection region at a second end, wherein the first connection region has at least one contact surface of the conductor track for electrically contacting the conductor structure and the second connection region is provided for electrical connection to an electrical component, such as an electrical supply voltage for electrically supplying the conductor structure and / or control electronics for controlling / regulating the conductor structure. In the installed state, the at least one contact surface of the conductor track is typically parallel to the plane of the wafer.

[0016] In the flat conductor connection element according to the invention, the at least one conductor track is electrically and spatially divided by a physical interruption into a first conductor track section and a second conductor track section in order to interconnect a flat electronic component. Thus, the first conductor track section is spatially separated from the second conductor track section, with the interruption or the area between the two conductor track sections being free of conductor track material.

[0017] The flat conductor connection element further comprises an electrical flat component integrated into the flat conductor. The flat component has a housing which separates the electrical flat component from the external environment. Arranged in the housing is a coil which serves as an interference suppression element and is suitable and intended to block or dampen high-frequency interference signals which typically have a frequency of more than 1 MHz, i.e. high-frequency noise which is coupled into the flat conductor. A first coil end is electrically connected to a first electrical external connection of the flat component and a second coil end is electrically connected to a second electrical external connection of the flat component. The electrical flat component can be electrically contacted via the two electrical external connections. The two electrical external connections are solder connections.

[0018] The first external electrical connection of the flat electrical component is electrically connected to the first conductor track section, and the second external electrical connection is electrically connected to the second conductor track section by soldering, so that the coil is connected in series (i.e., galvanically connected) to the two conductor track sections. In the electrical series circuit, the coil is located between the two conductor track sections. High-frequency interference signals (high-frequency noise) that are coupled into the flat conductor can thus be effectively dampened by the coil. The flat electrical component is a so-called "surface-mounted component," also known as an "SMD" (SMD = Surface-Mounted Device). Unlike components with connecting wires, where the connecting wires are pushed through a printed circuit board (PCB), SMDs can be soldered directly onto a circuit board, for example.This advantageously enables simplified manufacturing, lower production costs, and higher packing density. SMDs are well known to those skilled in the art, for example, from the electronic series production of populated circuit boards, so they need not be discussed in detail here. Therefore, the electrical flat component is not a printed circuit board or circuit board integrated into the flat conductor. The flat conductor connection element according to the invention thus differs significantly from the arrangements known, for example, from the documents EP 0608554 B1 and WO 2017 / 186360 cited above, in which printed circuit boards or circuit boards are used.

[0019] The coil serving as an interference suppressor is integrated into the flat conductor by the flat electrical component. This is very advantageous because the coil is no longer located in the surface area of ​​the disk, so that the disk with the soldered flat conductor connection element has a reduced height and therefore also requires less space. In addition, the weight of the disk with the flat conductor connection element is reduced by the flat electrical component. This significantly improves handling, transport, and packaging of the disk. The flat conductor connection element according to the invention can be electrically connected to the disk in an automated manner, in particular by soldering, so that the disk with the flat conductor connection element can be manufactured cost-effectively in industrial series production. Furthermore, there is no risk of the disk being damaged by the coil, especially during transport of the disk. These are major advantages of the invention.

[0020] The housing has a prismatic shape, in particular a cuboid shape, or a cylindrical shape. This enables a particularly compact and space-saving design of the flat conductor with the flat electrical component, whereby the flat electrical component can be particularly well integrated into the flat conductor. In accordance with the common understanding of the term "prism," this refers to a geometric body created by the parallel displacement of a flat base surface (e.g., a polygon) along a straight line in space that does not lie in this plane. The surface opposite the base surface is referred to as the top surface. In the form of a prism or cylinder, the housing of the flat electrical component thus has a housing base surface or housing underside, as well as a housing top surface, which are connected to one another by at least one housing side surface.It is understood that the terms "housing base" and "housing top" merely describe the shape of the housing, and are therefore not necessarily associated with a spatial orientation. Although it is possible for the housing base to be at the bottom and the housing top to be at the top, any other orientation of the housing in space is also possible and conceivable.

[0021] According to the invention, the two external electrical connections (solder connections) of the flat electrical component are arranged only on the underside of the housing or on the housing base, wherein the flat electrical component, physically bridging the interruption in the conductor track, is placed with the housing base on the conductor track or on the two conductor track sections. Viewed vertically through the flat component or conductor track, the housing base overlaps with the two conductor track sections. The external electrical connections arranged on the underside of the housing can thus be electrically connected (soldered) to the two conductor track sections particularly easily. This measure has the advantage of a particularly simple physical and electrical connection of the flat electrical component to the flat conductor.In this way, the flat conductor with the electrically connected flat component can be manufactured very compactly and in a time- and cost-efficient manner in industrial series production. Manufacturing a flat component in the form of a printed circuit board or circuit board would be considerably more complex, so the invention represents a significant improvement. Advantageously, the width of the flat component should be equal to the width of the flat conductor (dimension perpendicular to the extension of the flat conductor or conductor track).

[0022] The two external electrical connections of the flat electrical component are arranged only on the underside of the housing or on the housing base, so that the flat electronic component can be easily electrically connected to the flat conductor or at least one conductor track.

[0023] Advantageously, the housing has a maximum height of 20 mm, with its height preferably being in the range of 5 to 12 mm. This enables a particularly compact design of the flat conductor with the electrically connected flat component.

[0024] In a preferred embodiment, the electrical flat component and adjacent areas of the two conductor track sections, which are electrically connected to the two external electrical connections of the flat component by soldering, are housed in a capsule made of an electrically insulating material. This enables secure encapsulation of the electrical flat component and the two connection areas, thus providing good protection against external environmental influences such as moisture. Furthermore, the strength of the mechanical connection between the electrical flat component and the flat conductor can be improved.

[0025] The conductor track of the flat conductor can be applied to a carrier layer made of a dielectric material. The conductor track is preferably a strip- or ribbon-shaped metal foil. The metal foil is preferably a copper foil, an aluminum foil, a stainless steel foil, a tin foil, a gold foil, or a silver foil. The metal foil can also contain or consist of alloys with the aforementioned metals. The metal foil is advantageously tinned in sections or completely. This is particularly advantageous for achieving good solderability while simultaneously providing corrosion protection.

[0026] The conductor track can be covered with a flat, planar insulating sheath made of an electrically insulating material. If the conductor track is applied to a carrier layer made of a dielectric material, this layer can be bonded to a cover layer made of a dielectric material, thus forming the insulating sheath. The insulating sheath has a first layer side, which faces the pane when mounted, and an opposite second layer side, which faces away from the pane when mounted. When installed, the two layer sides are parallel to the pane plane.

[0027] The insulating sleeve is provided with at least one opening (hereinafter referred to as the "flat component opening" for ease of reference) on the top side of the flat conductor in the area of ​​the connection surfaces of the conductor track to which the external connections of the electronic flat component are electrically connected. Furthermore, the insulating sleeve has at least one opening (hereinafter referred to as the "solder compound opening" for ease of reference) on the underside of the flat conductor for electrical contact with the conductor structure. The openings in the insulating sleeve are each arranged and designed such that, viewed vertically through the flat conductor, the respective connection or contact surface is located within the opening. Openings in the insulating sleeve can be created, for example, using a window technique or by subsequent removal, for example, by laser ablation or mechanical removal.In window technology, the conductor track is coated, for example, with insulating foils with corresponding cutouts (windows), for example, glued or laminated. The openings are, for example, circular or round openings, although any other closed shape is equally possible, especially oval or rectangular.

[0028] The insulating sleeve is firmly connected to the conductor track, for example, by adhesive bonding. The insulating sleeve preferably contains or consists of polyimide or polyester, particularly preferably polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). The insulating sleeve can also contain or consist of thermoplastics and elastomers such as polyamide, polyoxymethylene, polybutylene terephthalate, or ethylene propylene diene rubber. Alternatively, encapsulating materials such as acrylate or epoxy resin systems can be used.

[0029] In a preferred embodiment, the conductor track of the flat conductor has a thickness of 10 pm to 300 pm, preferably 30 pm to 250 pm, and in particular 50 pm to 150 pm. Such thin conductor tracks are particularly flexible and can be easily adapted to the respective spatial situations.

[0030] In a preferred embodiment, the conductor track of the flat conductor has a width of 0.5 mm to 100 mm, preferably 1 mm to 50 mm, and in particular 10 mm to 30 mm. Such widths are particularly suitable for achieving sufficient current-carrying capacity in conjunction with the aforementioned thicknesses. The width of the conductor track can be constant or vary.

[0031] In a preferred embodiment, the flat conductor has a length of 5 cm to 150 cm, preferably 10 cm to 100 cm, and in particular 50 cm to 90 cm. It is understood that the length, width, and thickness of the flat conductor can be adapted to the requirements of each individual case.

[0032] The length of the flat conductor corresponds to its direction of extension. The length and width directions span the first side and the second side, opposite the first side. For example, the first side can be called the bottom side of the flat conductor, and the second side can be called the top side. The first end and the second end are the opposite ends of the flat conductor in the direction of extension.

[0033] In a preferred embodiment, the insulating sheath has a thickness of 10 μm to 300 μm, particularly preferably 25 μm to 200 μm, and especially 60 μm to 150 μm. The insulating sheath is advantageously bonded to the conductor track via an adhesive layer. The thickness of the adhesive layer is preferably 10 μm to 150 μm and particularly preferably 50 μm to 75 μm. Such insulating layers are particularly suitable for electrically insulating the flat conductor, mechanically stabilizing it, and protecting it from mechanical damage and corrosion.

[0034] In a preferred embodiment, the at least one contact surface of the conductor track in the first connection area, which is intended for electrical connection to the conductor structure of the pane, has a solder compound applied thereto. This facilitates electrical contacting, as the conductor track can be easily soldered to the conductor structure. The solder compound is thus already provided by the flat conductor connection element in a particularly practical manner. Thus, a correspondingly pre-assembled flat conductor connection element is provided.

[0035] In a preferred embodiment, the flat conductor has in the second connection region, i.e. at the end which is not intended for electrical connection to the conductor structure, a connection means which is electrically connected to the conductor track, for example a plug-in tongue. This facilitates the electrical connection of the flat conductor to a further electrical component, in particular in an automated manner. In addition, the flat conductor can have a connecting piece which is firmly connected to the flat conductor, for example selected from a plug or socket, in order to create a mechanical connection of the flat conductor to a further electrical component in addition to an electrical connection. The connecting piece contains the connection means, so that when a mechanical connection is formed, an electrical connection is also created.

[0036] The invention further extends to a disk assembly comprising a disk and, on a region of the disk, a conductor structure applied thereto. The disk assembly according to the invention also comprises a flat conductor connection element according to the invention, which is electrically connected to a region of the conductor structure, preferably via at least one solder compound. In this case, in the first connection region of the flat conductor, at least one contact surface of the conductor track is electrically connected, preferably soldered, to the conductor structure.

[0037] In a preferred embodiment, the pane contains or consists of glass, particularly preferably soda-lime glass. The pane is preferably a glass pane, in particular a window glass pane. The pane can in principle also contain or consist of other types of glass, for example quartz glass, borosilicate glass, or aluminosilicate glass. Alternatively, the pane can contain or consist of a polymer, in particular polycarbonate or polymethyl methacrylate. The pane can also contain or consist of other polymers, for example polyethylene, polypropylene, polystyrene, polybutadiene, polynitrile, polyester, polyurethane, polyvinyl chloride, polyacrylate, polyamide, or polyethylene terephthalate.

[0038] The pane is preferably transparent or translucent. The pane may additionally have an opaque, electrically non-conductive coating on its surface. In particular, the opaque (usually black) electrically non-conductive coating may be formed in a frame-like manner on the outer edge of the pane.

[0039] The disc preferably has a thickness of 0.5 mm to 25 mm, particularly preferably 1 mm to 10 mm and most preferably 1.5 mm to 5 mm.

[0040] The conductor structure formed on a surface of the pane can comprise all types of electrical conductors that can be arranged on a pane and that are suitable for electrical connection, preferably by soldering. These are, in particular, printed silver conductors made from a printed and subsequently fired thick layer of a screen printing paste with a relatively high silver content. The conductor structure preferably has a layer thickness of 5 pm to 40 pm, particularly preferably 5 pm to 20 pm, very particularly preferably 8 pm to 15 pm, and in particular 10 pm to 12 pm. Alternatively, glued-on metal wires or metal foils can also be used as the conductor structure. The conductor structure preferably serves to heat the pane.

[0041] In a preferred embodiment, the solder used is lead-free. This is particularly advantageous with regard to the environmental compatibility of the inventive wafer assembly with a flat conductor connection element. For the purposes of the present invention, "lead-free" means that the solder can contain lead in a very small amount of less than or equal to 0.1% by weight, with preferably no lead at all.

[0042] The layer thickness of the solder mass after soldering is preferably less than or equal to 6.0 x 10 -4 m, particularly preferably less than 2.0 x 10 -4 m. The pane arrangement according to the invention comprises a pane which is preferably a single pane (e.g. toughened safety glass) or a composite pane made up of two or more individual panes, as used in the automotive sector or in the construction sector.

[0043] The invention further extends to a method for producing the disc arrangement according to the invention, which comprises the following steps:

[0044] Providing a pane with an applied conductor structure, which serves in particular to heat the pane,

[0045] Arranging the flat conductor connection element according to the invention on the disc, Electrically connecting, preferably by soldering, at least one contact surface of the

[0046] Conductor track with the conductor structure.

[0047] The solder mass is preferably applied to the contact surface of the conductor track as a platelet or flattened droplet with a defined layer thickness, volume, shape, and arrangement. The shape of the solder mass platelet preferably corresponds to the shape of the contact surface. If the contact surface is rectangular, for example, the solder mass platelet is preferably rectangular.

[0048] The energy is introduced when soldering the conductor track of the flat conductor and the conductor structure preferably using a stamp, thermode, iron soldering, preferably laser soldering, hot air soldering, induction soldering, resistance soldering and / or ultrasound.

[0049] In a preferred embodiment, the flat conductor connection element is electrically connected, in particular soldered, to the conductor structure in an automated manner. This is possible because the coil in the flat conductor connection element according to the invention is integrated into the flat conductor. The coil is present as a flat component and thus also has a comparatively compact shape that can be processed automatically. The flat component is placed on one side (top side) of the flat conductor and soldered to the two conductor track sections, with the solder connections of the flat component being arranged on the housing underside or housing base.

[0050] Furthermore, the invention extends to the use of the pane assembly according to the invention as a pane for vehicles, aircraft, ships, architectural glazing, and building glazing. The flat conductor connection element serves to electrically connect the conductor structure of the pane to an external electrical system, such as a control system or voltage source. The pane assembly is used in particular in rail vehicles or motor vehicles, preferably as a windshield, rear window, side window, and / or roof window, particularly preferably as a heated rear window.

[0051] The flat conductor connection element according to the invention can be used particularly advantageously in panes with heating and antenna functions. The high-frequency interference signals (high-frequency noise) coupled in by the conductor structure with heating function can have a significant impact on the received antenna signals from the conductor structure with antenna function located very close.

[0052] The pane arrangement according to the invention preferably comprises a pane with two conductor structures, one conductor structure having a heating function and the other conductor structure having an antenna function. Accordingly, the pane arrangement according to the invention is preferably used as a pane with two such conductor structures.

[0053] The various embodiments of the invention can be implemented individually or in any combination. In particular, the features mentioned above and explained in more detail below can be used not only in the specified combinations, but also in other combinations or on their own, without departing from the scope of the present invention.

[0054] The invention is explained in more detail below using exemplary embodiments, with reference to the accompanying figures. Identical or equivalent elements are provided with the same reference numerals. They show, in a simplified representation, not to scale:

[0055] Figure 1 is a schematic sectional view of an embodiment of the flat conductor connection element according to the invention;

[0056] Figure 2 is a schematic plan view of the flat conductor connection element of Fig. 1,

[0057] Figure 3 is a schematic perspective view of an embodiment of the disc arrangement according to the invention,

[0058] Figure 4 is a flowchart illustrating the method according to the invention for producing the disk assembly. Reference is first made to Figures 1 and 2, in which a flat conductor connection element, designated overall by reference numeral 1, is schematically illustrated using a sectional view (Figure 1) and a top view (Figure 2).

[0059] The flat conductor connection element 1 comprises a flexible flat conductor, designated overall by the reference number 2, with a conductor track 3. The flat conductor 2 has a first connection region 4 at a first end and a second connection region 5 at a second end, wherein the first connection region 4 has two contact surfaces 18 of the conductor track 3 for soldering to a conductor structure 103 of a disk 101 (see Fig. 3). The second connection region 5 is provided for electrical connection to an external electrical component, such as a control electronics system, voltage source, or the like.

[0060] The conductor track 3 is in the form of a strip- or band-shaped metal foil, in this case, for example, a tinned copper foil. The conductor track 3 is covered with a flat, flat insulating sleeve 9 made of an electrically insulating material, wherein the insulating sleeve 9 here consists, for example, of polyimide (PI). The insulating sleeve 9 is firmly connected to the conductor track 3, for example, by adhesive, which is not shown in detail in the figures.

[0061] The conductor track 3 has, for example, a thickness of 10 pm to 300 pm, preferably of 30 pm to 250 pm and in particular of 50 pm to 150 pm. The conductor track 3 has, for example, a width of 0.5 mm to 100 mm, preferably of 1 mm to 50 mm and in particular of 10 mm to 30 mm. The flat conductor 2 has, for example, a length of 5 cm to 150 cm, preferably of 10 cm to 100 cm and in particular of 50 cm to 90 cm. The insulating sleeve 9 has, for example, a thickness of 10 pm to 300 pm, particularly preferably of 25 pm to 200 pm and in particular of 60 pm to 150 pm.

[0062] The conductor track 3 has an interruption 6, by which the conductor track 3 is electrically divided into a first conductor track section 7 and a second conductor track section 8.

[0063] The flat conductor connection element 1 further comprises an electrical flat component 10 provided with a housing 11, wherein a coil 12 (not shown in detail) serving for interference suppression is arranged in the housing 11. The coil 12 is suitable and intended to block or dampen high-frequency interference signals, which typically have a frequency of more than 1 MHz. A first coil end is electrically connected to a first electrical external connection 13 and a second coil end is electrically connected to a second electrical external connection 14 of the flat component 10. The two electrical external connections 13, 14, which are designed as solder connections, are located on a housing base surface 15 (housing underside) and are integrated into the housing wall, where they are accessible from the outside. In the figures, the two electrical external connections 13, 14 are shown only schematically.

[0064] The flat component 10 is placed in the area of ​​the interruption 6 with the housing base surface 15 onto the two conductor track sections 7, 8 (from above). The flat component 10 physically and electrically bridges the interruption 6 in the conductor track 3. When placed on the conductor track 3, the first electrical external connection 13 comes into contact with the first conductor track section 7 and the second electrical external connection 14 comes into contact with the second conductor track section 8. The first electrical external connection 13 is electrically connected (soldered) to the first conductor track section 7 and the second electrical external connection 14 is electrically connected (soldered) to the second conductor track section 8 via a solder compound located between them (not shown in the figures). In addition to an electrical connection, the soldered connections can also create a strong mechanical connection between the flat electrical component 10 and the conductor track 3.When the electrical flat component 10 is soldered on, the coil 12 of the electrical flat component 10 is electrically connected in series to the two conductor track sections 7, 8, with the coil 12 being located between the two conductor track sections 7, 8. As can be clearly seen in Figures 1 and 2, the flat component 10 extends from the first conductor track section 7 to the second conductor track section 8, whereby, when viewed vertically through the flat component 10 or conductor track 3, the flat component 10 has an overlap with both the first conductor track section 7 and the second conductor track section 8. This overlap allows the external electrical connections 13, 14 arranged on the housing base surface 15 to come into direct physical contact (via respective solder masses) and electrical contact with the conductor track 3.This makes the electrical connection between the flat component 10 and the conductor track 3 very simple and enables a simple automated (robot-assisted) electrical and mechanical connection of the flat component 10 to the conductor track 3.

[0065] The electrical flat component 10 is designed in the manner of an SMD and has a cuboid-shaped housing 11, for example, with a height ranging, for example, from 5 to 12 mm. The cuboid shape of the electrical flat component 10 is clearly visible in the top view of Fig. 2. The width of the housing 11 of the electrical flat component 10 corresponds to the width of the flat conductor 2, thus enabling good spatial integration of the electrical flat component 10 into the flat conductor 2. The width is the dimension perpendicular to the extension of the flat conductor 2.

[0066] The insulating sleeve 9 has a flat conductor opening 16 on its top side for the flat electrical component 10. The two conductor track sections 7, 8 are thus freely accessible from above. In the first connection area 4, the insulating sleeve 9 has two solder compound openings 17 on its underside. This makes the two contact surfaces 18 for soldering the conductor track 3 to the conductor structure 103 freely accessible from below. Solder compounds 19 for soldering the conductor track 3 to the conductor structure 103 are located on the two contact surfaces 18.

[0067] The flat conductor connection element 1 is provided in the second connection area 5 with a contact tongue 20 that is electrically connected to the conductor track 3. This facilitates the electrical connection of the flat conductor 2 or conductor track 3 to an external electrical component.

[0068] In the top view of Fig. 2, the two solder masses 19, which are located on the underside of the flat conductor connection element 1, are indicated schematically (dashed).

[0069] Fig. 3 shows a perspective view of the pane arrangement 100. The pane arrangement 100 comprises a pane 101. The pane 101 is made of glass, in particular soda-lime glass. A conductor structure 103 with metallic conductor tracks is applied to a pane surface 102 of the pane 101. Here, for example, a conductor structure 103 with silver conductor tracks is produced from a printed and subsequently fired thick layer of a screen printing paste with a relatively high silver content. The conductor structure 103 preferably has a layer thickness of 5 pm to 40 pm, particularly preferably 5 pm to 20 pm, very particularly preferably 8 pm to 15 pm, and in particular 10 pm to 12 pm. The flat conductor connection element 1, which is soldered to the conductor structure 103 in the first connection region 4 at the contact surfaces 18 of the conductor track 3 by means of the soldering mass 19, is shown only schematically. In the disc 101 of Fig.3, the conductor structure 103 serves as a heating structure for heating the pane 101.

[0070] Figure 4 shows a flow chart of the method according to the invention for producing the disc arrangement 100 according to the invention.

[0071] The method comprises the following method steps: a) Providing a disk 101 with a conductor structure 103 applied thereon, in particular a heating structure, b) Arranging the flat conductor connection element 1 on the disk 101, c) Electrically connecting, preferably by soldering, at least one contact surface 18 of the conductor track 3 to the conductor structure 103.

[0072] From the above, it can be seen that the flat conductor connection element according to the invention advantageously enables a flexible, cost-effective, and easy-to-manufacture electrical connection of a flat conductor connected to the conductor structure of a disk to an electrical device outside the disk, such as a power supply for the conductor structure and / or control electronics for controlling / regulating the conductor structure. The coil used for interference suppression is integrated into the flat conductor as a flat electrical component, thus reducing the space required by the disk and its weight. This significantly improves handling, transport, and packaging of the disk. The flat conductor connection element can be soldered to the disk in an automated manner, so that the disk with the flat conductor connection element can be manufactured cost-effectively in industrial series production.

[0073] List of reference symbols

[0074] 1 flat conductor connection element

[0075] 2 flat conductors

[0076] 3 conductor track

[0077] 4 first connection area

[0078] 5 second connection area

[0079] 6 Interruption

[0080] 7 first conductor track section

[0081] 8 second conductor track section

[0082] 9 Insulation cover

[0083] 10 Flat component

[0084] 11 housings

[0085] 12 coil

[0086] 13 first external electrical connection

[0087] 14 second external electrical connection

[0088] 15 Housing base area

[0089] 16 Flat component opening

[0090] 17 Solder mass breakthrough

[0091] 18 Contact surface

[0092] 19 Solder mass

[0093] 20 contact tongue

[0094] 100 disc arrangement

[0095] 101 disc

[0096] 102 Disc surface

[0097] 103 Ladder structure

Claims

Patent claims 1. Flat conductor connection element (1) for electrical connection to a conductor structure (103) applied to a disk (101), comprising a flat conductor (2) with at least one conductor track (3) which is electrically divided by an interruption (6) into a first conductor track section (7) and a second conductor track section (8), an electrical flat component (10) integrated into the flat conductor (2), which has a housing (11) with a first electrical external connection (13) and a second electrical external connection (14), wherein a coil (12) connected to the two electrical external connections (13, 14) is arranged in the housing (11), wherein the housing (11) has a prismatic shape, in particular a cuboid shape, or a cylindrical shape, wherein the housing (11) has a housing base surface (15), wherein the two electrical external connections (13, 14) are arranged on the housing base surface (15), wherein the flat component (10) is connected to the housing base surface (15),the interruption (6) is physically bridged, is placed on the conductor track (3), and wherein the first electrical external connection (13) is electrically connected to the first conductor track section (7) and the second electrical external connection (14) is electrically connected to the second conductor track section (8) by soldering, so that the coil (12) is connected in series with the two conductor track sections (7, 8).

2. Flat conductor connection element (1) according to claim 1, wherein the housing (11) has a maximum height of 20 mm, wherein its height is in particular in the range of 5 to 12 mm.

3. Flat conductor connection element (1) according to one of claims 1 or 2, in which the electrical flat component (10) and regions of the two conductor track sections (7, 8) which are electrically connected to the two electrical external connections (13, 14) of the flat component (10) are arranged in a capsule made of an electrically insulating material.

4. Flat conductor connection element (1) according to one of claims 1 to 3, in which the conductor track (3) is applied to a dielectric carrier layer or is a metal foil.

5. Flat conductor connection element (1) according to one of claims 1 to 4, in which the conductor track (3) is provided with an insulating sleeve (9), wherein the insulating sleeve (9) is provided with at least at least one flat component opening (16) for placing the flat component (10) on the conductor track (3).

6. Flat conductor connection element (1) according to one of claims 1 to 5, in which one or each contact surface (18) of the conductor track (3), which is intended for electrical connection by soldering to the conductor structure (101), has a solder mass (19) attached thereto.

7. Flat conductor connection element (1) according to claim 6, wherein the conductor track (3) is provided with an insulating sleeve (9), wherein the insulating sleeve (9) has a solder mass opening (17) for each solder mass (19).

8. Flat conductor connection element (1) according to one of claims 1 to 7, in which the flat conductor (2) has a connection means electrically connected to the conductor track (3), in particular a contact tongue (20), which can in particular be contained in a connecting piece selected from a socket or a plug.

9. A pane arrangement (100), comprising: a pane (101) with an applied conductor structure (103), preferably a motor vehicle pane, in particular a rear window, a flat conductor connection element (1) according to one of claims 1 to 8, wherein at least one contact surface (18) of the conductor track (3) is electrically connected to the conductor structure (103) by soldering.

10. Disc arrangement (100) according to claim 9, wherein the conductor structure (103) is a partial metal coating of the disc (101), which is in particular printed on the disc (101).

11. A pane arrangement (100) according to claim 10, wherein the conductor structure (103) is a heating structure for heating the pane (101).

12. Disc arrangement (100) according to claim 11, wherein the disc (101) has a further conductor structure which serves as an antenna.

13. A pane arrangement (100) according to any one of claims 9 to 12, wherein the pane (101) is a single pane or a composite pane.

14. A method for producing a disc assembly (100) according to any one of claims 9 to 13, comprising the following steps: Providing a disc (101) with an applied conductor structure (103), in particular a heating structure, Arranging the flat conductor connection element (1) according to one of claims 1 to 7 on the disc (101), Electrically connecting, preferably by soldering, at least one contact surface (18) of the conductor track (3) to the conductor structure (103).

15. Use of the pane arrangement (100) according to one of claims 9 to 13 for vehicles, aircraft, ships, architectural glazing and building glazing, preferably in rail vehicles or motor vehicles, particularly preferably for a heatable rear window.