Input device with an input interface which can be illuminated for a motor vehicle

Abstract

The invention relates to an input device (2) with an input interface (3), which can be illuminated, for a motor vehicle (1). The input interface (3) has at least one lighting element (4) which is printed onto the input interface (3) with an electroluminescent ink and / or an electroluminescent paint. In addition, it has a supply element (10) which is designed to supply the at least one lighting element (4) with electrical energy. The supply element (10) can also be printed onto the input interface (3), for example with an electrically conductive ink and / or an electrically conductive paint.

Description

[0001] Input device with an illuminable input surface for a motor vehicle

[0002] The invention relates to an input device with an illuminable input surface for a motor vehicle. The invention also relates to a motor vehicle with such an input device and a manufacturing method for such an input device.

[0003] A motor vehicle may have at least one input device by means of which, for example, a manual input can be made by a user of the motor vehicle. The user is, for example, a driver, a passenger, or another occupant of the motor vehicle. The input device may have an input surface for the manual input, which is illuminated, for example, by comprising at least one luminous element.

[0004] US 7,615,704 B2 describes a method for manufacturing a printed circuit board, wherein a conductive material is deposited on a substrate to form a first conductive path on the substrate. A dielectric material can be deposited directly thereon, upon which, in turn, a second conductive path made of the conductive material can be deposited.

[0005] US 8,327,534 B2 describes a method for producing a printed circuit board assembly, wherein a printed circuit board is produced sequentially by applying a conductive first ink and an insulating second ink to a base substrate.

[0006] It is the object of the invention to provide a solution by means of which an advantageous input device with a luminous element can be provided.

[0007] The problem is solved by the subject matter of the independent patent claims.

[0008] A first aspect of the invention relates to an input device with an illuminable input surface. The input device is provided for a motor vehicle. The input device can be arranged, for example, in the area of ​​a center console, a door, a side wall and / or in the area of ​​a dashboard of the motor vehicle. Alternative or additional arrangements of the input device in the motor vehicle are possible. The invention is based on the finding that it is known that conductive structures can be applied to a surface using, for example, a digital printing process. For this purpose, the surface, such as the input surface of the input device, can be printed with an electrically conductive ink. However, it can be advantageous to also realize other required or desired properties by printing a specific material.Therefore, luminous structures should be printed to create the illuminable input surface.

[0009] The input surface has at least one luminous element. The luminous element is printed onto the input surface using an electroluminescent ink and / or an electroluminescent varnish. The input surface also has a supply element designed to supply the at least one luminous element with electrical energy. The supply element can be designed, for example, as a wire that is at least partially adjacent to the electroluminescent ink and / or the electroluminescent varnish and supplies the luminous element with energy from an energy source, such as a battery in a motor vehicle. The at least one luminous element is caused to glow, for example, when an electrical voltage is applied to the ink and / or the varnish, whereby the input surface is illuminated at least in an area where the ink and / or the varnish is arranged.It can be provided that at least one lighting element is operated with direct voltage or with alternating voltage.

[0010] Electroluminescent ink is preferably chosen as the material for the luminous element because it allows for printing fine structures. For cost reasons, however, it may be provided that at least a portion of the at least one luminous element, or at least some of several luminous elements, are printed using the electroluminescent lacquer. However, this typically allows for thicker and thus less fine structures to be printed. For example, a structure with a thickness of approximately 0.01 mm can be printed using the electroluminescent ink, whereas only thicknesses of 0.1 to 0.3 mm can be expected with the electroluminescent lacquer.

[0011] It can be provided that a cover element, designed as a plate and / or film, is arranged on the electroluminescent ink and / or the electroluminescent lacquer. The cover element can, for example, protect the electroluminescent ink and / or the electroluminescent lacquer from environmental influences. Alternatively or additionally, the luminous element can be printed directly onto a top side of the input surface facing a user, without a cover element above it and / or on a bottom side opposite the top side.

[0012] The input device is space-saving and also easy to manufacture, as the luminous element is realized by printing with ink and / or varnish. Therefore, no lights or other components are required, only the appropriate ink or varnish. Thus, an advantageous input device with a luminous element is provided.

[0013] One embodiment provides that the at least one luminous element is printed onto the input surface using a digital printing process. Provision can be made for a print image to be printed to be transferred directly from a file or data stream from a computer to a printing press, without the use of a static printing form. A printing device is then provided that uses the electroluminescent ink and / or electroluminescent varnish to print the provided print image onto the input surface. The print image describes which structures are to be formed from the ink and / or varnish. The print image therefore describes, for example, at least one symbol, one letter, and / or one number. Using the digital printing process offers an advantageous price-performance ratio and enables flexibly adaptable print images.

[0014] A further embodiment provides that the supply element comprises at least one conductor track. The conductor track is printed onto the input surface using an electrically conductive ink and / or an electrically conductive varnish. At least one contact surface is formed on the input surface, at which contact surface the at least one conductor track is in electrical contact with the at least one luminous element. For example, the at least one conductor track can be printed onto the input surface first, and subsequently or simultaneously, the luminous element can be printed onto the input surface using the electroluminescent ink and / or the electroluminescent varnish, adjacent to the at least one conductor track or at least locally touching it. Multiple luminous elements can be provided, which are electrically coupled to the at least one conductor track.In particular, the plurality of lighting elements can be coupled to a single conductor track. This makes it clear how the at least one lighting element can be supplied with electrical energy. In one exemplary embodiment, it is particularly preferably provided that the supply element comprises at least two spatially separated conductor tracks. These are shaped, for example, as straight lines arranged parallel to one another. The at least one lighting element is arranged between two of the at least two conductor tracks. At a first end of the lighting element, this then has, for example, a contact surface to a first conductor track of the at least two conductor tracks and, at a second end opposite the first end, a contact surface to a second conductor track of the at least two conductor tracks.Each of the conductor tracks has a connection to a power source, forming an electrical circuit through which the luminous element located between the two conductor tracks is supplied with electrical energy. This enables the electroluminescent ink and / or electroluminescent paint to glow.

[0015] Preferably, several lighting elements are arranged next to each other between, for example, two spatially separated conductor tracks, each arranged at a distance from each other. Overall, several zones can be provided on the input surface, each of which contains two spatially separated conductor tracks with lighting elements arranged between them. This clearly explains how the supply element can be designed. Since this is also based on a printing process, in particular a digital printing process, the lighting element and the supply element can be manufactured quickly and cost-effectively.

[0016] An additional embodiment provides that the input surface has a substrate onto which the at least one luminous element is printed. The at least one conductor track, in particular the at least two spatially separated conductor tracks, is preferably also printed onto the substrate. The substrate is at least partially designed as a film, plate and / or three-dimensional structure. The substrate is made of plastic, for example. The substrate can therefore be a plastic film, a plastic plate and / or a three-dimensional plastic part. The input surface can therefore be, at least in some regions, two-dimensional, as in the case of the film and / or the plate, and / or three-dimensional, as in the case of the three-dimensional structure. The substrate can be designed differently locally, i.e., it can be composed of several parts, each of which is designed as a film, plate and / or three-dimensional structure.This clearly demonstrates how, by printing the at least one luminous element, input surfaces of any shape can be realized using the selected substrate. The input device can thus be flexibly adapted to various shapes, sizes, thicknesses, and / or other design features that are desired, for example, within the motor vehicle, by selecting the appropriate substrate.

[0017] Furthermore, one embodiment provides for several luminous elements to be arranged next to one another on the input surface. At least three adjacent luminous elements of these elements form a pixel element. Each pixel element comprises at least one red-illuminated luminous element, one green-illuminated luminous element, and one blue-illuminated luminous element. These can alternatively be referred to as red, green, and blue luminous elements. These luminous elements are or were printed with a red, green, or blue luminous ink and / or a correspondingly luminous varnish.

[0018] A screen or display can be created using lighting elements that can be illuminated in different colors, arranged, for example, next to each other and / or side by side. Each pixel element can preferably be controlled individually, so that different colors can be generated depending on how the individual lighting elements are controlled per pixel element. If the aforementioned different-colored lighting elements are provided per pixel element, different colors can be set. It can be provided that it is possible to specify which of the lighting elements should be illuminated and, if so, how brightly.A control unit of the input device can be provided, which is designed to specifically control the individual light elements individually in order to be able to display a desired color and / or a desired symbol using individually controlled light elements in the case of numerous light elements on the input surface. A control signal from the control unit can be transmitted to the respective light element via the supply element. The pixel elements enable the formation of a display surface similar to a display surface made of micro-LEDs, but based on the electroluminescent ink and / or the electroluminescent varnish.

[0019] A further embodiment provides that a plurality of luminous layers, each comprising at least one luminous element, are arranged one above the other on the input surface. An insulating layer is arranged between each two luminous layers, which electrically insulates the individual luminous layers from one another. In particular, at least one red-illuminated luminous element, one green-illuminated luminous element, and one blue-illuminated luminous element are arranged one above the other. A pixel element can be formed from the at least three luminous elements arranged one above the other. It is assumed here that the insulating layer and the individual luminous layers are each translucent for light from the luminous layers below. A mixture of red, green, and blue light can be generated, so that with appropriate control and intensity of the individual luminous elements, one of numerous different colors can be set.The screen or display can be realized by arranging several adjacent light elements per light layer. The individual light elements can preferably be individually controlled via the control unit.

[0020] A pixel element can therefore be formed either from adjacent luminous elements and / or from the luminous layers arranged one above the other. Thus, there are a variety of possibilities for how the screen or display area can be realized using the printed input surface.

[0021] According to an additional exemplary embodiment, the respective insulating layer is printed onto a respective underlying luminous layer of the plurality of luminous layers using an electrically insulating ink and / or an electrically insulating varnish. Therefore, there is no need for a film or other plastic part to be arranged on the respective luminous layer, which can be complex and cost-intensive, but rather the insulating layer can also be applied using a digital printing process or an alternative printing technique. This is particularly advantageous because both the conductor tracks and the luminous elements as well as the insulating layers can each be printed in individual printing steps. This saves material because the insulating layer can be arranged only where it is actually needed. If, for example, gaps are provided between individual areas of luminous elements, these partial areas can be left out.

[0022] Alternatively or additionally, it is possible for the insulating layer to be at least partially formed as a foil and / or plate made of an insulating material and to be attached to the respective luminous layer.

[0023] In addition, one exemplary embodiment provides for at least one antenna to be printed onto the input surface using an electrically conductive ink and / or an electrically conductive varnish. The antenna is designed to capacitively detect at least one object within a detection range of the antenna. The at least one object is, for example, a finger of a user's hand approaching the antenna, i.e., for example, the driver of the motor vehicle. This makes it clear how a manual input can be detected using the input device. Methods of capacitive object detection can be used to detect the input. The at least one antenna can be printed analogously to the at least one conductor track, for example, using the same electrically conductive ink and / or the same electrically conductive varnish.An input function or operating function is therefore provided by at least one antenna.

[0024] If, for example, the at least one antenna is not provided, the input device can alternatively be referred to as a display device. In this case, a display device is provided according to the invention that has an illuminable display surface. The display device is characterized in that the display surface has at least one luminous element printed onto the display surface with an electroluminescent ink and / or an electroluminescent varnish, as well as a supply element designed to supply the at least one luminous element with electrical energy. The exemplary embodiments of the input device can, where applicable, be provided as exemplary embodiments of the display device.

[0025] In an additional embodiment, it is provided that a shielding element is arranged on the input surface at least partially around the at least one antenna. The shielding element is designed to at least reduce the influence of an electrical interference field on the antenna. The electrical interference field can be generated, for example, by an electrical device arranged in the vicinity of the at least one antenna and / or possibly by neighboring antennas of the input surface. The shielding element thus represents active shielding, for example to divert interference waves. This is particularly suitable for achieving accurate measurement capability of the at least one antenna.

[0026] Furthermore, one embodiment provides that the shielding element is printed onto the input surface with the electrically conductive ink and / or the electrically conductive varnish. The shielding element can therefore also be a printed structure that is printed, for example, onto the substrate around the at least one antenna. The shielding element is formed, for example, from several conductive tracks or strips arranged side by side. Alternatively or additionally, a grid structure can be provided, i.e., intersecting tracks or strips. Alternatively, it is possible to print a predetermined area without holes and thus solidly as a shielding element. However, this is relatively material-intensive and thus more expensive than a shielding element made of strips or with grid structures. The shielding element preferably covers gaps between individual antennas as well as a large part of the area surrounding the respective antenna.This illustrates how the shielding element can also be realized by printing.

[0027] A preferred embodiment provides that the at least one antenna is arranged next to the at least one lighting element on the input surface. It can be provided that the input surface has a plurality of sub-regions, wherein the lighting element, in particular a plurality of lighting elements, is arranged in one of the sub-regions and the at least one antenna, in particular a plurality of antennas, is arranged in another sub-region. In this case, for example, the region in which the object can be capacitively detected is not directly illuminated, but rather, for example, only a sub-region or sub-regions of the input surface arranged around this region. This makes it possible to create an overall particularly thin input surface because only a single layer or a few multiple layers are printed locally, since the at least one lighting element is arranged adjacent to the at least one antenna.

[0028] In a further exemplary embodiment, it is provided that the at least one antenna is arranged above and / or below the at least one luminous element on the input surface. An insulating layer is arranged between the at least one antenna and the at least one luminous element, which electrically insulates the at least one antenna and the at least one luminous element from one another. The insulating layer is preferably printed, i.e., it is printed from an electrically insulating ink and / or an electrically insulating varnish, for example, onto the antenna or onto the luminous element. A layering comprising several individual layers can therefore be provided, such that an antenna layer with the at least one antenna and a luminous layer with the at least one luminous element can be arranged one above the other in a vertical direction.This allows, for example, the area responsible for capacitive object detection, and thus the area of ​​the antenna, to be directly illuminated with at least one luminous element. It is also possible to provide multiple layers of luminous elements, and thus multiple luminous layers and / or multiple antenna layers. The multiple luminous layers described above are particularly useful, for example, for generating different colors.

[0029] A further aspect of the invention relates to a motor vehicle with the input device described above. The motor vehicle is, for example, a passenger car, a truck, a bus, a motorcycle, and / or a moped. The motor vehicle can have the control unit. This can have at least one microprocessor and / or microcontroller. The control unit can be a computer.

[0030] An additional aspect of the invention relates to a manufacturing method for an input device with an illuminable input surface for a motor vehicle. The input surface has at least one luminous element and a supply element, wherein the supply element is designed to supply the at least one luminous element with electrical energy. The at least one luminous element is printed onto the input surface using an electroluminescent ink and / or an electroluminescent varnish. This is done in particular using a digital printing process.

[0031] The exemplary embodiments described in connection with the input device according to the invention, both individually and in combination with one another, apply accordingly, to the motor vehicle according to the invention and the manufacturing method according to the invention, as applicable. The invention encompasses combinations of the described exemplary embodiments.

[0032] Showing:

[0033] Fig. 1 is a schematic representation of an interior of a motor vehicle with several input devices,

[0034] Fig. 2 is a schematic plan view of an input surface with several light elements,

[0035] Fig. 3 is a schematic cross-sectional view of an input surface with several luminous layers, Fig. 4 is a schematic plan view of an input surface with several

[0036] antennas, and

[0037] Fig. 5 is a schematic cross-sectional view of antenna layers and luminous layers of an input surface arranged one above the other or next to each other.

[0038] In the figures, functionally identical elements are provided with the same reference numerals.

[0039] Fig. 1 shows a motor vehicle 1, of which a section of the interior of the motor vehicle 1 is sketched. Several input devices 2 are arranged in the interior. Each of these input devices 2 has an illuminable input surface 3, each of which comprises at least one lighting element 4. Here, several lighting elements 4 are sketched for each input surface 3. In principle, it is possible to refer to the input device 2 as a display device that has an illuminable display surface instead of the input surface 3.

[0040] The input device 2 is arranged here, for example, in an area of ​​a dashboard 5 of the motor vehicle 1. Furthermore, it is arranged here in the area of ​​a center console 6. There, it is positioned, for example, below a screen 7. Furthermore, the dashboard 5 can have a screen 7 and / or display units 8, which can display, for example, a current engine speed or another drive-related characteristic. Furthermore, a control unit 9 can be provided for the input device 2, by means of which, for example, the illuminable input surface 3 with the individual lighting elements 4 can be controlled.

[0041] Fig. 2 shows a plan view of the input surface 3 of the input device 2. Here it is clear that at least one lighting element 4 is provided, wherein five lighting elements 4 are sketched here purely as an example. Furthermore, the input device 2 comprises a supply element 10 which is designed to supply the at least one lighting element 4 with electrical energy. The respective lighting element 4 is printed onto the input surface 3 with an electroluminescent ink and / or an electroluminescent varnish. This is done, for example, using a digital printing process. Furthermore, the supply element 10 can be formed from at least one conductor track 11 which is printed onto the input surface 3 with an electrically conductive ink and / or an electrically conductive varnish.At least one contact surface 12 is formed on the input surface 3, at which the at least one conductor track 11 is in electrical contact with the at least one lighting element 4. Two spatially separated conductor tracks 11 are provided, and the respective lighting element 4 is arranged between the two conductor tracks 11, so that two contact surfaces 12 are formed per lighting element 4. A positive pole can be applied to one of the two conductor tracks 11 and a negative pole to the other, whereby an overall closed circuit can be formed.

[0042] Alternatively, alternating voltage can be applied to the respective conductor track 11. The respective conductor track 11 is preferably also printed onto the input surface 3 using the digital printing process.

[0043] Fig. 2 shows a substrate 13, which can be encompassed by the input surface 3. The at least one luminous element 4 and the conductor tracks 11 are printed onto the substrate 13. The substrate 13 can be made of plastic. The substrate 13 is designed, for example, as a film, plate, and / or three-dimensional structure.

[0044] Several adjacently arranged light elements 4 can each form a pixel element 14, at least three at a time. Each pixel element 14 preferably has at least one red-illuminated light element 4a, one green-illuminated light element 4b, and one blue-illuminated light element 4c. If these individual light elements 4a, 4b, 4c are controlled jointly as a pixel element 14, for example, by means of the control unit 9, different colors can be generated. Thus, a display surface, similar to a screen 7 made of micro-LEDs, can be realized by the individual printed light elements 4.

[0045] Fig. 3 shows a cross-sectional view of an input surface 3, in which several luminous layers 15 are provided, which are arranged one above the other. Each of the luminous layers 15 has at least one luminous element 4. In addition, each of the luminous layers 15 preferably has the two conductor tracks 11. An insulating layer 16 can be arranged between each two luminous layers 15, which electrically insulates the individual luminous layers 15 from one another. Here, at least one red-illuminated luminous element 4a, one green-illuminated luminous element 4b and one blue-illuminated luminous element 4c are preferably arranged one above the other, so that the three luminous layers 15 shown here and the insulating layers 16 arranged therebetween can also form a pixel element 14 on the input surface 3.

[0046] The respective insulating layer 16 can, for example, be printed on the underlying luminous layer 15 with an electrically insulating ink and / or an electrically insulating varnish, for example by means of the digital printing process.

[0047] Fig. 4 shows a different type of printing on the input surface 3, in which it is printed with electrically conductive ink and / or electrically conductive varnish in such a way that at least one antenna 20 is formed. The antenna 20 is designed to perform capacitive detection of at least one object in a detection area 21 of the antenna 20. For this purpose, for example, the antenna 20 is printed relatively thickly around a detection area 21 in order to be particularly conductive and thus to be able to detect the object in the detection area 21 particularly well. In addition, the respective antenna 20 has an antenna feed line 24, for example for supplying electrical energy.

[0048] A shielding element 22 can be arranged on the input surface 3, at least partially surrounding the at least one antenna 20. This shielding element 22 is designed to at least reduce the influence of an electrical interference field on the respective antenna 20. The shielding element 22 is printed, for example, with the electrically conductive ink and / or the electrically conductive lacquer onto the input surface 3, here, for example, onto the substrate 13, for example, using a digital printing process. For this purpose, individual printed tracks can be provided, for example, which are shaped as a grid and / or as individual stripes. Alternatively or additionally, a solid print can be provided as the shielding element 22, which has no holes or gaps. Ultimately, the shielding element 22 represents active shielding for the three antennas 20 sketched here as examples.

[0049] Alternative numbers, arrangements, sizes, and / or shapes of antennas 20 and / or shielding elements 22 than those shown in Fig. 4 are possible. Fig. 5 shows a combination of antenna layers 23 and the previously described luminous layers 15. For example, the antenna layer 23, which has the at least one antenna 20 and in particular the shielding element 22, can be arranged next to and thus laterally to the luminous layer 15 with the at least one luminous element 4 on the input surface 3. This is sketched on the right in Fig. 5.

[0050] Alternatively or additionally, the at least one antenna 20 and thus the antenna layer 23 can be arranged above or below the luminous layer 15 with the at least one luminous element 4 on the input surface 3. An insulating layer 16, which is printed, for example, can be arranged between the antenna layer 23 and the luminous layer 15. The insulating layer 16 electrically insulates the at least one antenna 20 from the at least one luminous element 4. The insulating layer 16 can be designed analogously to the insulating layer 16 mentioned, for example, in connection with Fig. 3.

[0051] Furthermore, a manufacturing method can be provided in which, for example, the respective conductor track 11 is first printed on the input surface 3, for example on the substrate 13, followed by or simultaneously by the respective lighting element 4 and / or the respective antenna 20 with the shielding element 22 arranged therearound and / or the respective insulating layer 16.

[0052] Overall, the examples show the input device 2 with the illuminable input surface 3, wherein conductive structures are applied to a two-dimensional or three-dimensional surface (substrate 13) using the digital printing process. An electroluminescent ink and / or an electroluminescent lacquer is used to realize the luminous elements 4. In general, a panel, a film, an instrument panel (dashboard 5), and / or other parts in the motor vehicle are suitable as the input surface 3. The individual layers can be printed directly onto the top or bottom surface of the substrate 13 or in layers, separated by insulating layers 16 depending on the application. The invention thus shows digitally printed surfaces with self-illuminating electroluminescent and conductive ink.

Claims

Patent claims 1. Input device (2) with an illuminable input surface (3) for a motor vehicle (1), characterized in that the input surface (3) has at least one luminous element (4) printed on the input surface (3) with an electroluminescent ink and / or an electroluminescent lacquer, and a supply element (10) designed to supply the at least one luminous element (4) with electrical energy.

2. Input device (2) according to claim 1, characterized in that the at least one luminous element (4) is printed on the input surface (3) by means of a digital printing process.

3. Input device (2) according to one of the preceding claims, characterized in that the supply element (10) comprises at least one conductor track (11) which is printed on the input surface (3) with an electrically conductive ink and / or an electrically conductive lacquer, wherein at least one contact surface (12) is formed on the input surface (3), at which contact surface the at least one conductor track (11) is in electrical contact with the at least one lighting element (4).

4. Input device (2) according to claim 3, characterized in that the supply element (10) comprises at least two conductor tracks (11) spatially separated from one another, wherein the at least one lighting element (4) is arranged between each two of the conductor tracks (11).

5. Input device (2) according to one of the preceding claims, characterized in that the input surface (3) has a substrate (13) on which the at least one luminous element (4) is printed, wherein the substrate (13) is at least partially formed as a film, plate and / or three-dimensional structure.

6. Input device (2) according to one of the preceding claims, characterized in that a plurality of luminous elements (4) are arranged next to one another on the input surface (3), of which at least three adjacent luminous elements (4) each form a pixel element (14), wherein each pixel element (14) comprises at least one red-illuminable luminous element (4a), one green-illuminable luminous element (4b) and one blue-illuminable luminous element (4c).

7. Input device (2) according to one of the preceding claims, characterized in that on the input surface (3) a plurality of luminous layers (15) are arranged one above the other, each comprising at least one luminous element (4), wherein an insulating layer (16) is arranged between each two luminous layers (15) which electrically insulates the individual luminous layers (15) from one another, wherein in particular at least one red-illuminable luminous element (4a), one green-illuminable luminous element (4b) and one blue-illuminable luminous element (4c) are arranged one above the other.

8. Input device (2) according to claim 7, characterized in that the respective insulating layer (16) is printed on a respective underlying luminous layer (15) of the plurality of luminous layers (15) with an electrically insulating ink and / or an electrically insulating varnish.

9. Input device (2) according to one of the preceding claims, characterized in that at least one antenna (20) is printed on the input surface (3) with an electrically conductive ink and / or an electrically conductive lacquer, which antenna is designed to carry out a capacitive detection of at least one object in a detection area (21) of the antenna (20).

10. Input device (2) according to claim 9, characterized in that a shielding element (22) is arranged on the input surface (3) at least partially around the at least one antenna (20), which shielding element is designed to at least reduce an influence of an electrical interference field on the antenna (20).

11. Input device (2) according to claim 10, characterized in that the shielding element (22) is printed on the input surface (3) with the electrically conductive ink and / or the electrically conductive lacquer.

12. Input device (2) according to one of claims 9 to 11, characterized in that the at least one antenna (20) is arranged next to the at least one lighting element (4) on the input surface (3).

13. Input device (2) according to one of claims 9 to 12, characterized in that the at least one antenna (20) is arranged above and / or below the at least one luminous element (4) on the input surface (3), wherein an insulating layer (16) is arranged between the at least one antenna (20) and the at least one luminous element (4), which insulating layer electrically insulates the at least one antenna (20) and the at least one luminous element (4) from one another.

14. Motor vehicle (1) with an input device (2) according to one of the preceding claims.

15. Manufacturing method for an input device (2) with an illuminable input surface (3) for a motor vehicle (1), wherein the input surface (3) has at least one lighting element (4) and a supply element (10) which is designed to supply the at least one lighting element (4) with electrical energy, characterized in that the at least one lighting element (4) is printed with an electroluminescent ink and / or an electroluminescent varnish onto the input surface (3), in particular by means of a digital printing process.

Images