WO2018233976A1

WO2018233976A1 - Motor vehicle display device and motor vehicle

Info

Publication number: WO2018233976A1
Application number: PCT/EP2018/063608
Authority: WO
Inventors: Jacques Hélot; Christian Becker; Alexander Hottinger; Torsten Gallitzdorfer
Original assignee: Audi Ag
Priority date: 2017-06-23
Filing date: 2018-05-24
Publication date: 2018-12-27
Also published as: DE102017210652A1

Abstract

The invention relates to a motor vehicle display device (12) comprising a pane (14) and an output unit (18) which is configured to output predetermined content. In addition, the motor vehicle display device (12) comprises a display unit (36) which is arranged on the pane (14) and at least partially covers the pane (14). Finally, the motor vehicle display device (12) comprises a control unit which is configured to control the display unit (36) in such a way that a degree of transparency of the display unit (36) can be adjusted, wherein the output unit (18) is arranged relative to the pane (14) such that the content output by the output unit (18) is projected onto the display unit (36) on the pane (14).

Description

Motor vehicle display device and motor vehicle

DESCRIPTION The invention relates to a motor vehicle display device according to the preamble of patent claim 1. The invention also relates to a motor vehicle with such a motor vehicle display device.

From the general state of the art it is known to display in motor vehicles information for a driver and possibly also for a passenger by means of a head-up display on a windshield of the motor vehicle. The head-up display has an image forming unit and a mirror system for displaying the information on the windshield, which together are also referred to as a HUD projector. The disadvantage of a head-up display is that the information displayed on the windshield is often difficult or impossible to read, depending on the ambient brightness and the color of the information displayed. Further, the image of the information by the head-up display is limited to a predetermined area on the windshield, whereby the information for the driver or passengers to be displayed too small or poorly visible or displayed.

It is therefore an object of the present invention to provide an improved motor vehicle display device by means of which contents or information can be displayed independently of position, reliably and clearly recognizable, in particular with a particularly high image quality.

The object is achieved by the subject matters of the independent patent claims. Advantageous developments of the invention are disclosed by the features of the dependent claims, the following description and the figures. According to the invention this object is achieved by a motor vehicle display device. The motor vehicle display device comprises a disc and a display unit, which is arranged on the disc and at least partially covers the disc. In other words, the display unit extends completely or partially along one side or face of the disc on the disc. In this case, the display unit may be attached to the disc. The disk may preferably be transparent or partially transparent. By "transparent" it is meant, in particular, that the pane is translucent, ie permeable to light, has a visible wavelength range, or is transparent or translucent. "Partially transparent" means, in particular, that the pane is partially transparent or partially transparent or opaque , By "pane" is meant in particular a glass pane or window pane or a laminated safety glass Alternatively, the pane may also be designed as an OLED display The pane may preferably be made of glass or plastic. In other words, the windshield may be curved or curved or arched.Furthermore, the motor vehicle display device has a control unit which is set up to control the display unit in such a way that a degree of transparency of the display unit is adjustable a predetermined value of transparency or transparency or transmission of the display unit is meant. By adjusting the degree of transparency of the display unit, it is also possible to set a transparency of the pane or a predetermined area of the pane on which the display unit is arranged. The control unit can be designed, for example, as an electronic circuit or microcontroller or ECU (English electronic control unit).

Furthermore, the motor vehicle display device comprises an output device which is adapted to output predetermined contents. By "content" is meant preferably image data and / or one or more picture elements and / or one or more symbols and / or text and / or lettering and / or film. in that the contents output by the output device are displayed on the display unit on the pane, in particular for displaying the predetermined contents by the display unit. be projected. The display unit may have a projection surface or a display surface onto which the contents output or displayed by the output device are projected. In other words, the contents output by the output device are displayed on the display unit or mirrored to the display unit. By projecting or mirroring the predetermined contents to the display unit on the pane, the predetermined contents are preferably displayed in a virtual display level. In particular, the virtual display layer has a virtual distance to the display surface of the display unit such that for a viewer of the display surface, the effect is that the contents displayed on the virtual display layer are displayed as if the viewer were viewing the content in front of them or see through the display unit. In this case, the dispensing device is preferably aligned with the pane such that the dispensing device faces the transparent pane. In other words, the output device may preferably be arranged at a predetermined angle inclined to the disc.

By projecting predetermined contents onto the display unit, the motor vehicle display device operates in the manner of a HUD. Due to the possibility of setting a predetermined degree of transparency of the display unit, readability or visibility of the predetermined contents on the display unit can be set in a particularly simple and reliable manner, depending on the driver's or rider's feelings. In addition, depending on a display parameter of the displayed contents, a size or an orientation or an arrangement of the predetermined contents can be set on the display unit. Thereby, the output contents for display on the display unit are not limited to a predetermined position on the display unit.

The invention also includes further developments of the motor vehicle display device according to the invention, resulting in additional advantages.

An advantageous embodiment provides that the display unit is subdivided into at least two or more display areas, in particular in a plane which extends parallel to the pane, wherein the control unit is set up to control the at least two display areas independently of one another. Furthermore, the control unit can be set up to increase the degree of transparency of the at least two or more display modes. rich display unit independently set. In addition, the control unit can be set up to control the output device in such a way that the output device projects the contents output by the output device only onto a predetermined area of the display unit or onto at least one of the at least two display areas. For example, a first display area may be set opaque, and the predetermined contents may be projected onto this display area. The further display area or the further display areas of the display areas can be switched to be transparent or partially transparent. In other words, the display unit may be embodied in places where something is displayed opaque or opaque, ie not or only slightly transparent, the rest of the display unit may be transparent or partially transparent. An advantageous development provides that the disc comprises a first disc element and a second disc element parallel to the surface to the first disc element. By "parallel to the surface" it is meant, in particular, that the first disc element and the second disc element of the disc are aligned parallel to one another at a predetermined distance In other words, the disk may have a layer structure, in which case the first disk element, the display unit and the second disk element are preferably arranged adjacent to one another, in other words the display unit may have an intermediate layer or intermediate layer between the first disk element and the second disk element As a result of the arrangement of the display unit between the two disk elements of the disk, no additional holding device is required, which makes the motor vehicle display device structurally particularly simple ut.

Advantageously, the control unit is set up to set a degree of transparency of the display unit from 0 percent to 100 percent as the degree of transparency. Preferably, the control unit may be configured to adjust the degree of transparency of the display unit in steps, for example in 10-percent increments. Particularly preferably, the control unit is set up to set a degree of transparency of 0 percent, 50 percent and 100 percent. For example, if the control unit degree of 0 percent, the display unit is opaque or opaque or opaque. If the control unit sets, for example, a degree of transparency of 50 percent, then the display unit is semitransparent, ie only 50 percent transparent or semi-transparent. At a 50 percent degree of transparency, 50 percent of the incoming light on the display unit may penetrate the display unit and 50 percent will be blocked. In other words, with a degree of transparency of 50 percent, the display unit may have a transmittance of 50 percent. If the control unit sets, for example, a degree of transparency of 100 percent, then the display unit is completely transparent or translucent. In this case, with a degree of transparency of 100 percent, the display unit has a transmittance of 100 percent. To set the degree of transparency, the control unit can be coupled, for example, with an operating element. The operating element can be designed to be operated by a user. For example, the control element may be a turntable or a slider or a plurality of keys, wherein each key may be assigned a degree of transparency. Alternatively, the control element can also be designed as a touch-sensitive display, which can also be referred to as a touch display. To adjust the degree of transparency by means of the touch-sensitive display, a menu or control panels can be displayed on the display. In this case, each of the panels can be assigned a degree of transparency. Depending on a detected control value of the operating element, the control unit can set or specify a degree of transparency of the display unit. In other words, a control value of the operating element can be assigned or assigned a degree of transparency of the display unit. The user can set or enter or specify the manipulated variable, for example, by turning or pressing or pushing the operating element. Thus, the transparency of the display unit can be adjusted according to the user's feelings or preferences. Additionally or alternatively, the motor vehicle display device may have a detection device, which is configured to detect an environmental parameter value, in particular in an environment of a motor vehicle. Preferably, the detection device can be configured to have as ambient parameter value a brightness or a light intensity capture. The detection device can furthermore be coupled to the control unit, wherein the control unit is configured to set the degree of transparency of the display unit as a function of a detected environmental parameter value. In other words, a detected environmental parameter value can be assigned or assigned to a degree of transparency. As a result, the degree of transparency of the display unit can be set automatically, ie without the intervention of a driver or passenger.

Additionally or alternatively, the control unit may be configured to detect a driving mode of the motor vehicle. Driving mode is in particular a driving operation of the motor vehicle meant. Preferably, the motor vehicle can be operated in a manual drive mode or in an autonomous or fully automated drive mode. The control unit can also be set up to adjust or adapt the degree of transparency of the display unit as a function of the detected driving mode of the motor vehicle. For example, it may be provided that the control unit sets a degree of transparency of 100 percent when the motor vehicle is moving in a manual driving mode. On the other hand, if the motor vehicle is moving in an autonomous or fully automated driving mode, then the control unit can be set up to control the display unit in such a way that it has an opaque or semi-opaque, ie for example a degree of transparency between 0 percent and 75 percent.

Additionally or alternatively, the control unit may be configured to analyze the output predetermined contents. In this case, the control unit can be set up, for example, to determine or determine a type or a category of the output predetermined contents. In an advantageous manner, the control unit can be set up to adjust the degree of transparency as a function of the output predetermined contents. For example, the control unit may set a degree of transparency of 0 percent when a film is outputted as the output predetermined contents. On the other hand, the display unit can be set partially transparent, ie, for example, with a degree of transparency of 50 percent, if information is output as predetermined contents. This is the case, for example, when the motor vehicle display device displays information in the manner of an augmented reality. This information can be used as information, for example, on points of interest (short POI). se), which are perceptible by the disc, in particular be displayed next to the points of interest.

According to an advantageous development, the output device for outputting the predetermined contents comprises a display. By "display" is meant in particular a display or a device for optical signaling or output of, in particular variable, information, that is to say the predetermined contents.To project the predetermined contents onto the display unit, the display can be inclined at a predetermined angle to the window or window In other words, the arrangement of the display and the pane or display unit for projection or mapping of the predetermined contents onto the display unit can be coordinated with one another, depending on the location or region on the display which displays the predetermined contents can be projected or mirrored onto an appropriate area on the display unit.

Advantageously, the output device may further comprise a mirror device, wherein the mirror device is adapted to mirror the output of the display contents such that the output predetermined contents are projected onto the display unit on the disc and / or mirrored. The mirror device can be designed, for example, as a mirror or as a further display with a reflective display surface or surface. A mirror surface of the mirror device can preferably have the same dimensioning or area as that of the display, in particular a display surface of the display. Advantageously, the display is arranged at a predetermined distance parallel to the mirror device. In other words, the display can be arranged parallel to the surface, in particular at a predetermined distance from the mirror device. For projecting the predetermined contents output by the display onto the display unit on the disk, the mirror or the further display is preferably arranged or aligned at a predetermined angle inclined to the disk or the display unit.

Due to the structure of the output device, there is the advantage that the motor vehicle display device is constructed particularly compact. When installing the motor vehicle display device in a motor vehicle, little space is required. The space-saving motor vehicle Display device results from the fact that either only one display is required or by the parallel alignment of the display with the mirror device. A distance between the display and the mirror device can be kept low. The compact motor vehicle display device additionally affords the advantage that a particularly cost-effective and construction material-saving display device for a motor vehicle is provided.

A further advantageous embodiment provides that the motor vehicle display device further comprises an antireflection layer, wherein the disc is at least partially coated with the antireflection coating. In other words, the disc or a surface of the disc may be completely or partially coated with an antireflection coating. The antireflection coating preferably prevents the disc from being antireflected. Preferably, the antireflection coating or antireflection coating is used to suppress the reflection from a surface of the disc, in particular on the surface of the display unit, to which the output device projects the predetermined contents. As a result, it can be ensured by the antireflection layer that due to reflection no false contents are superimposed or displayed on the display unit. The antireflection coating prevents multiple reflections of the displays. In addition, it can be ensured by the anti-reflection layer that the driver or passenger is not disturbed or obstructed by reflections on the windscreen. Advantageously, the display unit is formed as a film. The film may be formed, for example, as a plastic film. Preferably, the film is formed as a switchable film. By "switchable" it is meant, in particular, that a voltage, in particular a DC voltage, can be applied to the film, whereby the optical properties of the film change, and the switchable film is particularly preferably designed as an electrochromic film the film may be formed from plastic and may comprise electrochromic substances or elements or be formed from an electrochromic material Depending on the voltage applied to the switchable film, the degree of transparency of the switchable film may be adjusted.

An advantageous embodiment provides that the film is subdivided into at least two or more film areas or film elements, wherein the control unit is set up to store the at least two or more film areas. independently of each other. Furthermore, the control unit can be set up to adjust the degree of transparency of the at least two or more foil areas independently of one another. For example, a film area can be set opaque and the predetermined contents, such as a film, can be projected onto this film area. The other film areas can be switched to transparent or semi-transparent.

Alternatively, it can be provided that the display unit is designed as an LCD display or OLED display. In order to be able to provide the display unit with different degrees of transparency, a self-illuminating OLED display or a self-illuminating OLED layer is preferably provided as the backlight and an LCD display or an LCD layer located thereon. Alternatively, an LCD layer with OLED layers arranged on both sides can be used to implement different degrees of transparency. In other words, the display unit may have a layer structure comprising an OLED layer, an LCD layer and a further OLED layer. Such a layer structure has the advantage that both sides can be controlled separately from one another and the contents can only be seen from one viewing direction through the pane.

An LCD display, which can also be called a liquid crystal display, is preferably a display or a screen whose function is based on the fact that liquid crystals influence the polarization direction of light when a certain amount of electrical voltage is applied.

An OLED display is preferably a self-luminous display. Backlighting is not needed on an OLED display compared to an LED display. The abbreviation OLED stands for organic light emitting diode (English, organic light-emitting diode). OLED displays have a predetermined structure with organic layers or films between two electrodes, the anode and the cathode. In the organic films or layers, two kinds of organic materials are preferably used. Suitable organic materials are, for example, aluminum hydroxyquinoline or long-chain polymers, such as, for example, polyparaphenylenevinyl-len. On a transparent anode, which consists for example of indium tin oxide (ITO), and is on a disk, in particular a glass, is, an organic film, for example, as a hole-conducting layer or conductive polymer layer, applied. Above or on the organic film, a second organic layer, for example an emissive polymer layer, is applied with a cathode consisting of metals such as barium or calcium. The last level is another disc, which is designed in particular as a glass pane. The thickness of the entire module, ie the OLED display, is preferably determined by the thickness of the panes. Now, when a voltage is applied, electrons (negative charges) from the cathode and at the same time holes (positive charges) from the high work function anode are injected into the organic material. In the applied electric field, holes and electrons migrate through the organic film and, when recombined, form excited states that decay with the emission of photons, producing light.

The invention also includes a motor vehicle with a motor vehicle display device according to the invention. The motor vehicle is preferably designed as a motor vehicle, in particular as a passenger car.

An advantageous embodiment provides that the motor vehicle display device has a detection device which is directed to an interior of the motor vehicle. By "interior" is meant in particular a space of a vehicle cabin of the motor vehicle The detection device is set up to fix a point fixed on the window by a user and / or a head position of the user and / or a line of sight of the user's eyes The control unit of the motor vehicle display device is configured to display a display parameter of the contents output by the output device in dependence on the point fixed with the eyes and / or in dependence on the head position and / or in dependence From the viewpoint of the eyes of the user, it is preferable to mean by "display parameter" a display form of the predetermined contents displayed by the output device. As a display parameter, for example, an extent and / or a degree of distortion and / or an orientation of the predetermined output contents or a position at which the predetermined contents are displayed on the display can be set. For example, an image or a graphic is in the Display distorted so that the mirror or projection on the disc results in an undistorted image. For example, the display parameters can also be actively adjusted as a function of the eye position so that the output contents are displayed as undistorted as possible by the motor vehicle display device. Thus, the predetermined contents can be displayed user-friendly.

Advantageously, the transparent pane is designed as a window pane of the motor vehicle, in particular as a windshield or as a rear window or as a side window or as a glass roof of the motor vehicle.

According to a preferred embodiment, the output device is arranged on a dashboard of the motor vehicle in a receiving area of the dashboard. Preferably, the output device may be disposed on a side of the dashboard facing the disk in the receiving area of the dashboard or the instrument panel.

If the output device has, for example, the mirror device and the display, then a type of cavity can form between the mirror device arranged parallel to one another and the display, wherein two opposite sides delimiting this hollow space are provided by the mirror device and the display. This cavity, which forms the receiving area, can extend along a longitudinal direction of the mirror device and / or the display. The cavity may thus have the same length as a length of the mirror device or the display. If the dispensing device has only the display, for example, then the receiving region can have a support surface, so that the display resting or arranged on the support surface is arranged inclined at a predetermined angle to the transparent pane. For example, the receiving area may have a wedge-shaped shape or contour in which the display is arranged on the bearing surface of the receiving area. Due to the receiving area in the dashboard no additional holding elements are necessary, whereby space and weight can be saved.

Advantageously, the motor vehicle display device further comprises a cover member, wherein the cover member is adapted to cover the receiving area. In other words, by means of the ckelements the receiving area are closed. The cover is preferably plate-shaped or disc-shaped. Furthermore, the cover element comprises a film element, wherein the control unit of the motor vehicle display device is adapted to set a degree of transparency of the film element. Further, the cover member may comprise a transparent cover plate, wherein the film member is disposed on the transparent cover plate and covers the cover plate at least partially. Preferably, the film element can completely cover the cover plate. Advantageously, the cover plate may be coated with an antireflection coating. This can ensure that the cover is anti-reflective. In order to fix the film element to the cover plate, the film element can be clamped, for example, between two cover plate halves of the cover plate. The cover element can therefore have a layer or laminate structure with a first cover plate half, the film element and a second cover plate half. The film element is preferably designed as a switchable film, in particular as an electrochromic film. If, for example, the motor vehicle display device is not needed at present, the degree of transparency of the film element can be set to a degree of transparency of 0 percent, for example, so that the output device can not project anything onto the display unit.

The invention also includes developments of the motor vehicle according to the invention, which have features as they have already been described in connection with the developments of the motor vehicle display device according to the invention. For this reason, the corresponding developments of the motor vehicle according to the invention are not described again here. In the following, embodiments of the invention are described. This shows:

Figure 1 is a schematic representation of a motor vehicle only partially shown with a motor vehicle display device in a side view.

FIG. 2 shows a schematic illustration of a motor vehicle, only partially illustrated, with a motor vehicle display device according to a further embodiment in a side view; FIG. 3 shows a schematic illustration of the motor vehicle display device of FIG. 1 with a detailed view of the window of the motor vehicle display device and a display unit arranged thereon in a sectional view;

4 shows a schematic illustration of displayed contents by means of the motor vehicle display device according to an embodiment in a perspective view;

5 shows a schematic representation of displayed contents by means of the motor vehicle display device according to a further embodiment in a perspective view; 6 shows a schematic illustration of a motor vehicle, only partially illustrated, with a motor vehicle display device according to a further embodiment with a mechanically displaceable cover element in a side view; and FIG. 7 shows a schematic representation of a motor vehicle, only partially illustrated, with a motor vehicle display device with a cover element according to a further embodiment in a side view. The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention, which are to be considered independently of one another, which also develop the invention independently of each other and thus also individually or in a different combination than the one shown as part of the invention. Furthermore, the described embodiments can also be supplemented by further features of the invention already described.

In the figures, functionally identical elements are each provided with the same reference numerals. Fig. 1 shows a schematic representation of a motor vehicle 10 in a side view. The motor vehicle 10 is preferably designed as a motor vehicle, in particular a passenger car. The motor vehicle 10 has a motor vehicle display device 12. The motor vehicle display device 12 comprises a pane 14. The pane 14 according to the embodiment of FIG. 1 is a windshield of the motor vehicle 10. Further, the motor vehicle display device 12 comprises a display unit 36 (not shown in FIG. 1). The display unit 36 is arranged on the disk 14. Preferably, the display unit 36 at least partially, so completely or partially, the disc 14. In other words, the display unit 36 extends in a plane of the disc 14 at least partially along the disc 14. The plane is preferably the plane of a surface the disc 14, which faces, for example, an interior 16 of the motor vehicle 10. For example, the display unit 36 may extend from a driver side of the motor vehicle 10 to a passenger side of the motor vehicle 10. The display unit 36 may be formed as a switchable film, in particular as an electrochromic film. The switchable or electrochromic film can comprise a liquid-crystal film which is electro-coated on both sides and laminated between two polyester films.

Furthermore, the motor vehicle display device 12 has a control unit (not shown in the figures) which is set up to control the display unit 36. For this purpose, display unit 36 is coupled to the control unit. The control unit is configured to set or specify a degree of transparency of the display unit 36. For setting the predetermined degree of transparency, the control unit activates the display unit 36. If the display unit 36 is designed, for example, as a switchable film, then the control unit for adjusting the degree of transparency can be set up to apply a voltage to the film or to energize the film. For example, in the interior 16 of the motor vehicle 10, an operating element may be arranged, which is coupled to the control unit and with which a user can enter or specify or set a degree of transparency. The degree of transparency of the display unit 36 can be set, for example, between 0 percent and 100 percent. Before- zugt the degree of transparency of the display unit 36 can be adjusted in stages. With a transparency level of 0 percent, the display unit is opaque. With a degree of transparency of 100 percent, the display unit 36 is switched to transparent. As a result of the arrangement of the display unit 36 on the pane, the transparency of the pane can thus also be adjusted, even if the pane itself is preferably designed to be transparent. At the area where the display unit 36 covers the transparent pane 14, the transparency of the pane 14 can be adjusted with the degree of transparency at this area.

The construction of the transparent pane 14 and the display unit 36 will be discussed in more detail in FIG.

Furthermore, the motor vehicle display device 12 has an output device 18, which is set up to display or display predetermined contents. For example, the output device 18 may have a display 19. The display 19 is, as shown in FIG. 1, arranged in a predetermined position or at a predetermined angle to the disc 14. In this case, the display 19 is arranged on the disc 14 or the display unit 36 on the disc 14 such that the output by the display 19 contents are projected onto the display unit 36 on the disc 14. By arranging the display 19 and projecting the predetermined contents to the display unit 36 on the transparent glass 14, the predetermined contents are displayed or displayed in a virtual display plane 20. The virtual display plane 20 is formed by the projection or mirroring of the predetermined contents on the display unit 36 or on the surface formed by the display unit. Although the predetermined contents are projected or mirrored onto the curved or curved disk 14 by the arrangement of the display unit 36 on the disk, for an observer or a user of the predetermined contents on the disk 14, the predetermined contents are in the virtual display plane The observer is preferably located in the interior 16 of the motor vehicle 10 in the region of a driver's seat or a passenger seat of the motor vehicle 10.

For arranging the display 19 of the output device 18 in the motor vehicle 10, the display 19 is arranged on a dashboard 22 in a receiving area 24 or in a receiving unit of the dashboard 22. The display 19 lies on a bearing surface 26 of the receiving element. Empire 24 or on. The support surface 24 serves as a support or holding device for the display 19. As can be seen from FIG. 1, the display 19 is arranged at an end region of the transparent pane 14. With "end region" is preferably the region of the transparent disc, which is adjacent to a hood of the motor vehicle 10 toward a body of the motor vehicle 10.

The receiving region 24 is, as can be seen in FIG. 1, formed by a wedge-shaped or triangular depression or pit or a trench. The bearing surface 26 and a surface 28 adjoining the bearing surface 26 form the walls or walls of the receiving region 24. The wedge-shaped receiving region 24 is formed by the bearing surface 26 and the adjacent surface 28.

Furthermore, the motor vehicle display device 12 includes a cover member 30. The cover member 30 is configured to cover the receiving portion 24. In other words, the receiving area 24 can be closed by means of the cover element 30. Furthermore, the cover element 30 comprises a film element, wherein the control unit of the motor vehicle display device 12 is adapted to set a degree of transparency of the film element. This degree of transparency can also be set in steps, ie step by step. In this case, the film element may be formed analogously to the display unit. If, for example, the motor vehicle display device 12 is currently not required, the degree of transparency of the film element can be set to a degree of transparency of 0 percent, for example, so that the display 19 can not project anything onto the display unit. Fig. 2 shows a schematic representation of the motor vehicle 10 in a side view or sectional view with another embodiment of the motor vehicle display device 12. The motor vehicle display device 12 in FIG. 2 differs from the embodiment in FIG. 1 in that the Output device 18 has a mirror device 32 up. In addition, the receiving area 24 in FIG. 2 is designed differently than the receiving area 24 in FIG. 1.

The mirror device 32 is configured to mirror the contents output from the display 19 such that the output contents are the display unit 36 is projected on the disk 14. For this purpose, the display 19 is arranged at a predetermined distance parallel to the mirror device 32. In this case, the display 19, in particular a display surface of the display 19, have the same dimensions as the mirror device 32. The mirror device 32 is preferably designed as a mirror or as a further display with a reflective display surface. For projecting the predetermined contents output by the display 19 onto the display unit 36 on the disk 14, the mirror is preferably arranged or aligned at a predetermined angle inclined to the transparent disk 14 or the display unit 36. Compared to FIG. 1, the mirror device 32 in FIG. 2 is in the same position as the display 19 in FIG. 1.

The receiving area 24 in FIG. 2 is designed as a shaft. The parallel to the display 19 arranged mirror device 32 forms with the display 19 together from the shaft. The display 19 outputs the predetermined contents. The predetermined contents are projected to the mirror device 32 and / or are reflected in the mirror device 32 such that the predetermined contents are projected to the display unit to the transparent plate 14. The display surface of the display 19 or the display 19 and the mirror device 32 are arranged in such a way to each other that their surfaces - a mirror surface of the mirror device 32 and the display surface of the display 19 - mirror each other. The mirror surface of the mirror device 32 is thus reflected in the display 19 and the display 19 is reflected in the mirror device 32. For this purpose, the display 19, in particular a display surface of the display 19, is preferably formed mirror-like. By mirroring the display 19 or the display surface of the display 19, the predetermined contents are displayed in a further virtual display level 34. This further virtual display plane 34 is optically formed by the reflection of the mirror device 32 and the display 19 on the side facing away from the display 19 side of the mirror device 32nd

As a result of the parallel arrangement of the display 19 and the mirror device 32 relative to one another, the contents output by the display 19 are transmitted in the same content to the mirror device 32. In other words, the contents as displayed on the display 19 are projected onto the mirror device 32 in the same way, ie identically or one-to-one. The predetermined contents projected onto the mirror device 32 are deflected or mirrored by the mirror device 32 and projected or imaged onto the display unit 36 on the pane. The projection is preferably carried out in an analogous manner as has already been described in connection with FIG. 1 and the display 19.

If the surface or display surface of the display 19 were mirror-like, then a further virtual display plane 32 'would form, which is arranged at a predetermined distance, in particular parallel, to the virtual display plane 20. Although the predetermined contents are projected or mirrored onto the curved or curved disk 14 by the arrangement of the display unit 36 on the disk, for an observer of the predetermined contents on the disk 14 the predetermined contents are in or on the virtual display level 20 and / or or the other virtual display level 32 '.

In Fig. 3, the disc 14 and arranged on the disc 14 display unit 36 are shown in more detail in a sectional view. The disk 14 comprises a first disk element 14 "and a second disk element 14 '. The two disk elements 14', 14" are arranged parallel to one another in the surface. Both disk elements 14 ', 14 "have the same design, in other words the two disk elements 14', 14" can be dimensioned the same. In this case, the length and / or the width and / or the thickness may correspond to the dimensioning of the two disk elements 14 ', 14 ", and the display unit 36 is arranged between the two disk elements 14', 14". The display unit 36 is clamped between the two disk elements 14 ', 14 ", so that the transparent disk 14 can have a layer structure with the display unit 36 and the two disk elements 14', 14". The first disk element 14 ", the display unit 36, and the second disk element 14 'may be disposed adjacent each other, wherein the first disk element 14", the display unit 36, and the second disk element 14' may be constructed as a laminate. If the pane 14 is, for example, a glass pane and the display unit 36 is a switchable film, then the glass pane may be formed, for example, from a laminate of a first glass pane element, the switchable film and a second glass pane element. According to the embodiment of FIG. 3, the disc 14 is formed as a windshield of the motor vehicle 10. In this case, the first disk element 14 "faces an environment of the motor vehicle 10. The second disk element 14 'faces the interior 16 of the motor vehicle 10. Overall, the disk 14 has a curved shape, in particular in cross-section The surface of the first disc element 14 ", which is arranged opposite a surface of the first disc element 14" facing the display unit 36, is convex, and a surface of the second disc element 14 'which faces a display unit 36 is also used to implement the arched shape In addition, an antireflection coating can be used up on the transparent pane 14, preferably on the surface of the transparent pane 14, which faces the interior 16 of the motor vehicle 10.

FIGS. 4 and 5 each schematically show two different possible applications of the motor vehicle display device 12. In FIGS. 4 and 5, the structure of the motor vehicle display device 12 described in FIG. 1 is used. The application possibilities shown in FIGS. 4 and 5 can also be implemented with the construction of the motor vehicle display device 12 described in FIG. 2.

In Fig. 4, the display unit 36 is switched opaque. In this case, the display unit 36 has a degree of transparency of 0 percent. Since the display unit 36 is arranged on the window pane of the motor vehicle 10, in this case on the windshield, the view to the outside, ie from the interior 16 of the motor vehicle 10 to an environment of the motor vehicle 10, is blocked by the display unit 36. Thereby, the predetermined contents output by the output device 18 are projected on the windshield. It is also apparent from Fig. 4 that the predetermined contents are displayed in a predetermined orientation. In this case, the predetermined contents are displayed mirror-inverted on the display 19, as they subsequently appear on the virtual display level 20. In other words, the predetermined contents on the display 19 and how they are projected on the display unit 36 are displayed in mirror image to each other. Two images are mirror images of each other if they are consistent in all lengths and angles but have different handedness. For example, in operation of the motor vehicle 10, a driver of the motor vehicle 10 use the opaque display unit 36 to watch a movie as an predetermined content in an autonomous driving mode of the motor vehicle 10. For example, to prevent nausea while driving, when a driver or passenger wants to view predetermined contents on the display unit 36, the degree of transparency of the display unit 36 may be switched to partially transparent, that is, for example, with a degree of transparency of 50 percent. To set the degree of transparency, the driver can operate, for example, an operating element in the motor vehicle 10 and thus adjust the degree of transparency of the display unit 36 in stages.

Alternatively, it can be provided that the degree of transparency of the display unit 36 automatically adjusts depending on an ambient brightness. For this purpose, the motor vehicle 10, for example, have a detection device which is set up to detect a brightness or a light intensity in an environment of the motor vehicle 10. The lower the detected value of the brightness in the surroundings of the motor vehicle 10, that is, the darker it becomes, the less transparent the display unit 36 can become. In other words, the degree of transparency may increase with decreasing brightness. For example, the detection device may comprise a camera and / or a light sensor. In Fig. 5, the display unit 36 is switched transparent. In this case, the display unit 36 has a degree of transparency of 100 percent. The image projected on the display unit or projected or mirrored predetermined contents is displayed in the manner of a HUD. The environment of the motor vehicle 10 is fully perceivable by the windshield, wherein the predetermined contents are also displayed. In this case, picture elements for marking a preceding motor vehicle are displayed. For this purpose, the detection device can be configured to additionally or alternatively detect and analyze objects in the surroundings of the motor vehicle. The control unit of the motor vehicle display device 12 may be adapted to adapt a display parameter of the predetermined contents depending on the detected object. Thus, the markings shown in Fig. 5, for example, be adapted to a width of the preceding vehicle. Furthermore, the markings can be seen on the windshield right there. be det, where driver or passenger of the motor vehicle 10 perceives the vehicle in front.

Additionally or alternatively, the detection device may be configured to detect a user's eye fixed point on the transparent pane 14 and / or a head position of the driver and / or a line of sight of the driver's eyes. For example, the detection device may have a camera which is directed onto the interior 16 of the motor vehicle 10. The control unit of the motor vehicle display device 12 is set up to set a display parameter of the contents output by the display 19 depending on the point fixed with the eyes and / or depending on the head position and / or the direction of eye sight of the driver ,

FIG. 6 and FIG. 7 show two different embodiments of the cover element 30. In FIG. 6, the cover element 30 may be formed as a plate-shaped element. Further, the cover member 30 may be formed of an opaque or opaque material. For example, the cover 30 may be formed of plastic. As can be seen from FIG. 6, the motor vehicle display device 12 has a receiving opening 31 for receiving the cover element 30. For closing the receiving region 24, the cover can be moved mechanically. For this purpose, the cover 30 can be pushed or displaced from the receiving opening 31 until the cover 30 closes the receiving area 24. In a closed state, the cover member 30 extends to the display 19. For example, the control unit of the motor vehicle display device 12 may be configured to control an adjustment mechanism for moving the cover member 30. The adjusting mechanism serves to drive the cover element 30 into or out of the receiving opening 31. In this case, the control unit can control the adjusting mechanism in such a way that the cover element 30 is at least partially, ie completely or partially, accommodated in the receiving opening 31 in an opened state and closes the receiving area 24 in a closed state.

FIG. 7 shows a further embodiment of the cover element 30. In contrast to the embodiment shown in FIG. 6, the cover element is ment 30 not in a receiving opening in or out of this. The cover member 30 closes the receiving area 24. The cover 30 is plate-shaped or disc-shaped. The cover member 30 comprises a film member 33 and a cover plate 35. The cover plate 35 is formed of a transparent material. For example, the cover plate 35 may be formed of glass or plastic. The film element 33 may be formed analogously to the display element, as a switchable film. The control unit of the motor vehicle display device 12 is configured to set a degree of transparency of the film element 33. Depending on whether the motor vehicle display device 12 is required, the film element is switched to transparent or opaque.

Overall, the examples show how the invention provides a windshield with a switchable film for the presentation of a display or augmented reality by mirroring.

According to a particularly preferred embodiment, the windscreen of the motor vehicle is provided with a switchable film, which can optionally be switched to transparent and opaque. This is combined with a display that is reflected in the windshield. From a sitting position of the driver or rider, the display is not visible. The display is reflected in the windscreen and the reflection is visible from the sitting position of the driver or passenger.

The film, which is arranged on the windshield, can be switched transparent. The mirror image, that is, the content projected through the display on the windshield, works like a kind of HUD. The display, however, is much larger in comparison to the display with a HUD. The film can be switched to opaque. As a result, the view is locked to the outside and the reflection of the display is very good, especially on the windshield, visible and can be used for an interface. The film can also be switched to partially transparent, so you can see to the outside and can see the reflection of the display on the windshield.

The graphics in the display are so distorted that the reflection in the curved windscreen results in an undistorted image. Additionally or alternatively it is possible the head position or an eye To track a person's point of view and to adjust the distortion of the graphic in real time so that the mirror image is less distorted than no eye tracking.

Claims

CLAIMS:

A motor vehicle display device (12) comprising:

a disc (14);

- an output device (18) which is adapted to output predetermined contents;

marked by

- A display unit (36) which is arranged on the disc (14) and the disc (14) at least partially covered;

- A control unit which is adapted to the display unit (36) to control such that a degree of transparency of the display unit (36) is adjustable, wherein

- The output device (18) is arranged to the disc (14) such that the output by the output device (18) contents are projected onto the display unit (36) on the disc (14).

Motor vehicle display device (12) according to claim 1,

characterized in that

the disk (14) comprises a first disk element (14 ") and second disk element (14 ') parallel to the surface parallel to the first disk element (14"), the display unit (36) being arranged between the first disk element (14 ") and the second disk element (14 ') is arranged.

Motor vehicle display device (12) according to one of the preceding claims,

characterized in that

the control unit is set up as a degree of transparency to set a degree of transparency of the display unit (36) of 0 percent to 100 percent, in particular stepwise.

Motor vehicle display device (12) according to one of the preceding claims,

characterized in that

the output means (18) for outputting the predetermined contents comprises a display (19).

Motor vehicle display device (12) according to claim 4,

characterized in that the output device (18) further comprises a mirror device (32), wherein the mirror device (32) is designed to mirror the contents output by the display (19) in such a way that the output contents are displayed on the display unit (36) on the disk ( 14).

Motor vehicle display device (12) according to one of the preceding claims,

characterized in that

the motor vehicle display device (12) further comprises an antireflection coating, wherein the disc (14) is at least partially coated with the antireflection coating.

Motor vehicle display device (12) according to one of the preceding claims,

characterized in that

the display unit (36) is designed as a film, in particular as a switchable film, particularly preferably as an electrochromic film, or as an OLED display.

Motor vehicle (10) with a motor vehicle display device (12) according to one of the preceding claims.

Motor vehicle (10) according to claim 8,

characterized in that

the motor vehicle display device (12) has a detection device which is directed onto an interior (16) of the motor vehicle (10), wherein the detection device is set up to fix a point fixed by a user with the eyes on the disc (14) and / or to detect a head position of the user and / or a line of sight of the user's eyes, the control unit being adapted to display a display parameter of the contents output by the output device (18) in dependence on the point fixed with the eyes and / or in dependence on adjust the head position and / or depending on the viewing direction of the user's eyes.

10. motor vehicle (10) according to claim 8 or 9,

characterized in that the disc (14) is designed as a window pane of the motor vehicle (10), in particular as a windshield or as a rear window or as a side window. Motor vehicle (10) according to one of claims 8 to 10,

characterized in that

the output device (18) on a dashboard (22) of the motor vehicle (10) in a receiving area (24) of the dashboard (22) is arranged.

Motor vehicle (10) according to claim 1 1,

characterized in that

the motor vehicle display device (12) further comprises a cover element (30), wherein the cover element (30) is adapted to cover the receiving area (24), wherein the cover element (30) comprises a film element, wherein the control unit is adapted to a Adjust the degree of transparency of the film element.