Display device

Abstract

A display device (22) is proposed, comprising a liquid crystal panel (40), a background illumination unit (28) for illuminating the liquid crystal panel (40), and a cover element (42). The background illumination unit (28) has a first sheet film (30) having a plurality of parallelly arranged first sheets (32), wherein the first sheet film (30) is arranged such that the longitudinal direction of the first sheets (32) is at least nearly horizontal. The display device (22) has a second sheet film (44) having a plurality of parallelly arranged second sheets, wherein the second sheet film (44) is arranged such that the longitudinal direction of the second sheets faces at an angle of 80° to 100° relative to the longitudinal direction of the first sheets (32) of the first sheet film (30), and the second sheet film (44) is disposed on a portion of the liquid crystal panel (40).

Description

Technical Field

[0001] The present invention relates to a display device and a method for displaying images using the display device. Background Technology

[0002] A multi-view display is known from WO2004036286A1. Summary of the Invention

[0003] A display device is proposed, comprising a liquid crystal panel, a background illumination unit for providing background illumination to the liquid crystal panel, and a masking element. The background illumination unit has a first sheet film having a plurality of parallelly arranged first sheets, wherein the first sheet film is arranged such that the longitudinal direction of the first sheets is at least nearly horizontal. The display device also has a second sheet film having a plurality of parallelly arranged second sheets, wherein the second sheet film is arranged such that the longitudinal direction of the second sheets is oriented at an angle of 80° to 100° relative to the longitudinal direction of the first sheets of the first sheet film, and wherein the second sheet film is disposed on a portion of the liquid crystal panel.

[0004] The display device can be located, for example, in the vehicle's dashboard or instrument panel, and / or in another location within the vehicle, such as on a pillar or seat, on the seatback, or on the roof. The display device can show information or graphical representations to vehicle occupants, such as the driver and / or passengers. For example, it can display vehicle status or vehicle mode. The output information can be, for example, information about vehicle status such as speed, RPM display, fuel level, and / or information about vehicle navigation and / or information about the entertainment system.

[0005] The advantage of this invention is that two different image illustrations can be displayed on different areas of a display device or liquid crystal panel. In this way, different image illustrations can be displayed for example to the driver and passengers, thereby preventing the driver from being distracted by driving events. For example, information necessary for driving operations can be displayed to the driver, and in addition to this information, image illustrations of entertainment systems can be displayed to passengers, particularly those that the driver cannot see. This can improve road safety, especially by displaying moving images or entertainment content that the driver cannot see, to meet legal and / or regulatory requirements. Furthermore, by combining the sheet film with other components, optimized display can be achieved, thereby ensuring reliable and / or stable display of image illustrations. Moreover, different observers can perceive these image illustrations from different viewing angles. Advantageously, the first sheet film reduces or prevents light reflection on the windshield, and the second sheet film ensures that the image illustrations are only displayed to passengers. Furthermore, energy can be saved, as the emitted light is transmitted to the observer particularly efficiently. Additionally, the sheet film saves construction space and / or costs, such as expenses. For example, it can avoid using multiple backlighting units and LCD panels to display multiple image illustrations, thereby saving in particular construction space, energy and / or costs, such as cost.

[0006] In one exemplary design, the first sheet film can be designed to guide light horizontally, and the second sheet film can be designed to guide light vertically. In this way, particularly with the first sheet film, light propagation, especially in the direction of the windshield, can be prevented, thereby significantly reducing reflections on the windshield. This reduces driver distraction, improving road safety. Furthermore, with the second sheet film, only images can be displayed to passengers. Therefore, the driver will not be distracted by the second image, which also improves road safety.

[0007] The second sheet film can be advantageously designed in a rectangular shape. In this way, in particular, the existing construction space can be optimized, thereby saving construction space. Furthermore, images and illustrations can be reliably and / or securely displayed to the observer of the display device. Additionally, moving images or entertainment content that the driver cannot see can be displayed to passengers to meet legal and / or regulatory requirements.

[0008] In a further improvement, the masking element can be arranged on the liquid crystal panel using an optical adhesive material. In an alternative embodiment, the masking element can be disposed on a portion of the liquid crystal panel and a second sheet film using an optical adhesive material. As a result, image illustrations can be displayed reliably and / or securely. Furthermore, the masking element can be reliably and / or securely arranged on the liquid crystal panel. This, for example, can save construction space.

[0009] In one exemplary design, opaque markings can be arranged at least partially on the covering element. This allows, for example, the markings to mask transition areas of the viewing region. For instance, one or more edges of the sheet film can be masked or concealed, thereby optimizing the image illustration. In other words, visible edges can be masked.

[0010] The masking element can be advantageously designed to be colored. For example, the masking element can have a transmittance greater than approximately 70%. In an alternative embodiment, the adhesive material can be colored, and the masking element is disposed on the liquid crystal panel within the adhesive material. By coloring, the black value (Schwarzwert) of the visible surface of the display device can be improved in particular, thereby producing a consistent black surface for the observer.

[0011] In an advantageous design, the second sheet film can be applied to the liquid crystal panel using an optically transparent adhesive. As a result, images can be displayed reliably and / or securely. In particular, the function of the sheet film can be especially supported by improving the direction of light. For example, optical reflections between the sheet film and the liquid crystal panel can be reduced or avoided. Furthermore, the sheet film can be reliably and / or securely arranged on the liquid crystal panel. For example, this can save construction space. Additionally, energy can preferably be saved, and residual brightness can be minimized from the viewing angle of the corresponding area of ​​the display observed by the driver.

[0012] Preferably, the liquid crystal panel may have a first surface and a second surface opposite to the first surface, wherein the first surface is arranged facing the background illumination unit and the second surface is arranged facing the masking element, and wherein a second sheet film is disposed on a portion of the first surface or a portion of the second surface. This allows for optimal arrangement of the sheet film on the liquid crystal panel. As a result, one and / or more image illustrations can be displayed to the observer with particular reliability and / or stability. For example, optical reflections between the sheet film and the liquid crystal panel can be reduced or avoided in particular. Furthermore, construction space can be saved in particular.

[0013] In a further improvement, the display device may have a third sheet film with a plurality of parallelly arranged third sheets, wherein the longitudinal direction of the third sheets is oriented at an angle of 80° to 100° relative to the longitudinal direction of the first sheet film, the longitudinal direction of the third sheets being parallel to the longitudinal direction of the second sheet film, and the third sheet film is disposed on a portion of the liquid crystal panel. In an advantageous design, the liquid crystal panel may have one or the first surface and one or the second surface opposite the first surface, wherein the first surface faces the backlighting unit and the second surface faces the masking element, wherein the second sheet film is disposed on a second portion of the second surface, and wherein the third sheet film is disposed on a first portion of the first surface, and wherein the first and second portions are arranged overlapping. The function of the second sheet film can be particularly supported by using the third sheet film. As a result, images that are particularly invisible to the driver can be displayed to passengers. In this way, road traffic safety can be advantageously improved. In addition, it can especially improve passenger comfort in the vehicle because it can display images of the entertainment system to passengers.

[0014] In a favorable design, the background lighting unit can be designed to emit light with different brightness levels in one or more partial areas. In this way, in particular, the brightness in different partial areas can be compensated for or offset.

[0015] Furthermore, a method for displaying two image illustrations using a display device is proposed, comprising the following steps:

[0016] Light is emitted in the direction of the LCD panel through the backlight unit.

[0017] The first sheet guides the light horizontally.

[0018] A first image is displayed on a first portion of the liquid crystal panel using the first portion of the guided light.

[0019] A second image is displayed on a second portion of the liquid crystal panel using the second portion of the guided light.

[0020] The second sheet film guides the second portion of the light rays in the displayed image in the vertical direction.

[0021] A method for displaying two image illustrations using a display device according to any one of the preceding claims is also proposed, comprising the following steps:

[0022] Light is emitted in the direction of the LCD panel through the backlight unit.

[0023] The first sheet guides the light horizontally.

[0024] A first image is displayed on a first portion of the liquid crystal panel using the first portion of the guided light.

[0025] The second sheet guides the second portion of the light in the vertical direction.

[0026] A second image is displayed on a second portion of the liquid crystal panel by means of the second portion of the guided light.

[0027] The proposed method has the advantage of displaying different image illustrations for different observers. For example, only relevant information, such as vehicle status, can be displayed to the driver, while in addition to this information, information or illustrations of the entertainment system can be displayed to passengers. This improves road traffic safety, especially as the driver is less distracted, and also enhances passenger comfort by allowing them to perceive the entertainment system's image illustrations. Furthermore, the proposed method improves efficiency by guiding light using a sheet-like membrane. This, in particular, saves on costs and / or energy, and / or construction space.

[0028] In a further improvement, the method may also include a step of guiding a second portion of the light in the vertical direction using a third sheet film. By using the third sheet film, the function of the second sheet film can be supported and improved in particular. As a result, image illustrations can be displayed only to passengers, thus preventing the driver from being distracted by image illustrations displayed to passengers, such as those from an entertainment system. Consequently, construction space and / or costs, such as cost and / or energy, can be reduced in particular. Attached Figure Description

[0029] Embodiments of the present invention are illustrated in the accompanying drawings and explained in more detail in the following description. Elements showing similar functions in different drawings are referred to by the same reference numerals, wherein repeated descriptions of said elements are omitted. Wherein:

[0030] Figure 1 A schematic top view of a vehicle according to an embodiment of the present invention is shown;

[0031] Figure 2 A partial schematic diagram of a vehicle according to an embodiment of the present invention is shown;

[0032] Figure 3 A schematic diagram of a background lighting unit according to an embodiment of the present invention is shown;

[0033] Figure 4 A schematic diagram of a display device according to an embodiment of the present invention is shown;

[0034] Figure 5 A schematic diagram of a display device according to an embodiment of the present invention is shown;

[0035] Figure 6 A schematic diagram of a display device according to an embodiment of the present invention is shown;

[0036] Figure 7 A schematic diagram of a portion of a display device according to an embodiment of the present invention is shown;

[0037] Figure 8 A schematic diagram of a portion of a display device according to an embodiment of the present invention is shown;

[0038] Figure 9 A schematic diagram of a portion of a display device according to an embodiment of the present invention is shown;

[0039] Figure 10 A schematic diagram of a portion of a display device according to an embodiment of the present invention is shown;

[0040] Figure 11 A schematic diagram of a vehicle dashboard having a display device according to an embodiment of the present invention is shown;

[0041] Figure 12 A schematic diagram of a method for displaying two image illustrations according to an embodiment of the present invention is shown;

[0042] Figure 13 A schematic diagram of a method for displaying two image illustrations according to an embodiment of the present invention is shown. Detailed Implementation

[0043] Figure 1 A schematic top view of a vehicle 20, such as a motor vehicle, like an automobile, with a display device 22 is shown. The display device 22 is designed to display at least one or more image illustrations for a first observer 24 and / or a second observer 26. The display device 22 may be arranged, for example, in the dashboard or instrument panel of the vehicle 20, and / or in another location within the vehicle, such as on a pillar or seat, for example on a seat back, or on the roof. Information about the vehicle 20 can be displayed via the display device 22, such as vehicle status information or information about the vehicle mode, such as speed and / or RPM and / or temperature and / or fuel tank fill and / or navigation prompts and / or information about the vehicle's entertainment system and / or other information that can be used for the operation of the vehicle 20.

[0044] The arrangement of the display device 22 in the vehicle 20 allows observers 24 and 26 to observe the information displayed via the display device 22. Observers 24 and 26 may be vehicle occupants, such as the driver and / or passenger of the vehicle 20. Preferably, the first observer 24 is the driver, and the second observer 26 is a passenger. Alternatively or additionally, the display device 22 may be arranged in another location within the dashboard of the vehicle 20. The display device 22 may be arranged in the center console or dashboard, particularly in front of the passenger 26.

[0045] Figure 2 A partial schematic diagram of a vehicle 20 with a display device 22 is shown from one side. According to... Figure 2 The display device 22 can especially be according to Figure 1 The display device 22 is designed accordingly. Furthermore, based on... Figure 2 The display device 22 can be, in particular, according to Figure 1 The display device 22 is arranged in the vehicle 20.

[0046] Figure 3 A schematic diagram of a background lighting unit 28 according to an embodiment of the present invention is shown. Figure 3 Background lighting unit 28 can be arranged in particular according to Figure 1 , Figure 2 Or according to Figures 4 to 11 The arrangement of the backlighting unit 28 relative to the windshield 29 of the vehicle is also shown in the display device 22.

[0047] The background lighting unit 28 has a first sheet film 30 with a plurality of parallel first sheets 32, wherein the first sheet film 30 is arranged such that the longitudinal direction of the first sheets 32 is at least nearly horizontal. In this advantageous design, the longitudinal direction of the first sheets 32 points toward the drawing surface. The background lighting unit 28 also has a light source 34. The light source 34 is specifically designed to emit light rays 36, 38. The light rays 36, 38 of the light source 34 are specifically emitted in the direction of the first sheet film 30. If the light rays 36, 38 illuminate the first sheet film 30 and thus the first sheets 32, only light rays 38 that extend at least nearly parallel to or within a defined angular range relative to the first sheets 32 are allowed to pass through. The light rays 38 allowed to pass through do not specifically illuminate or intersect with the first sheets 32. Light rays 36 that illuminate the first sheets 32 at an angle greater than the defined angular range are absorbed by the first sheets 32. In this way, the light rays 36 and 38 emitted by the light source 34 can be guided by the first sheet film 30, especially in the horizontal direction and particularly relative to the windshield 29. In this manner, the light ray 38 can pass through the first sheet film 30, especially in the horizontal zone.

[0048] Figure 4A schematic diagram of a display device 22 according to an embodiment of the present invention is shown. Figure 4 The display device 22 can especially be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle. The display device 22 includes a liquid crystal panel 40, a backlighting unit 28 for providing backlighting for the liquid crystal panel 40, and a cover element 42.

[0049] Background lighting unit 28 can be specifically designed according to... Figure 3 The background lighting unit 28 is designed and therefore has a first sheet film 30 with a plurality of parallel first sheets, wherein the first sheet film 30 is arranged such that the longitudinal direction of the first sheets is at least nearly horizontal. In this advantageous design, horizontal specifically refers to horizontal relative to the observer, and especially the observer's viewing direction. Therefore, light emitted in a direction that might be upward or downward relative to the display device 22, as referenced to the observer's viewing direction, is filtered out by means of the first sheet film 30.

[0050] The display device 22 also includes a second sheet film 44 with a plurality of parallel second sheets, wherein the second sheet film 44 is arranged such that the longitudinal direction of the second sheets faces at an angle of 80° to 100° relative to the longitudinal direction of the first sheet film 30. The second sheet film 40 is disposed on a portion of the liquid crystal panel 40. The second sheet film 44 is preferably rectangular in design. The first sheet film 30 is specifically designed to guide light in the horizontal direction, wherein the second sheet film 44 is designed to guide light in the vertical direction. The operation of the second sheet film 44 corresponds to the operation of the first sheet film 30, wherein the second sheet film 44 is rotatably arranged relative to the first sheet film 30, particularly rotated at a right angle, such that the sheets of the first sheet film 30 and the sheets of the second sheet film 44 are arranged intersectingly. The light incident on the second sheet film 44 is therefore particularly oriented in the vertical direction. Thus, by means of the second sheet film 44, light incident on the second sheet film 44, particularly at excessively large angles in the vertical direction, is filtered out. In this way, the image can be directed, for example, so that it is visible only to passengers and not to the driver of the vehicle.

[0051] In this advantageous design, the masking element 42 is disposed on a portion of the liquid crystal panel 40 and the second sheet film 44, particularly by means of an optical adhesive material 46. The optical adhesive material 46 may also be designed as an optically transparent resin or OCR, or as a liquid adhesive, to planarize the edges of the second sheet film on the liquid crystal panel, particularly in the image step height. In other words, the masking element 42 is bonded to a portion of the liquid crystal panel 40 and the second sheet film 44. In an advantageous design, an opaque marking may be at least partially disposed on the masking element 42. In an improvement, the masking element 42 and / or the adhesive material 46 may be designed to be colored.

[0052] The second sheet film 44 is disposed on the liquid crystal panel 40, particularly by means of an optically transparent adhesive 48. In other words, the second sheet film 44 is fixed, bonded, or disposed on the liquid crystal panel 40, particularly on a portion of the liquid crystal panel 40, by means of an adhesive and / or an adhesive film, particularly an optically transparent adhesive 48.

[0053] The liquid crystal panel 40 has a first surface 50 and a second surface 52 opposite to the first surface 50, wherein the first surface 50 is disposed facing the backlight unit 28, and the second surface 52 is disposed facing the cover element 42. A second sheet film 44 may preferably be disposed on a portion of the first surface 50 or a portion of the second surface 52. In this advantageous design, the second sheet film 44 is disposed on a portion of the second surface 52.

[0054] The sheet film can also be referred to as LCF or light control film. In other words, two sheet films 30 and 44 are used in a cross-arranged manner. It is therefore preferable to optimize privacy performance by using the cross-arranged LCF 30 and 44. The sheet film 44, which is cross-arranged relative to the first sheet film 30, fills only a portion of the area of ​​the liquid crystal panel.

[0055] The liquid crystal panel 40 may be specifically designed as, or referred to as, a display and / or an LCD or LCD display panel. Specifically, at least two display areas are provided on the liquid crystal panel 40 that can be perceived from different viewing angles. The shapes of the defined areas can be arbitrarily chosen, such as rectangular, elliptical, and / or circular. The separation of these areas can be defined, for example, by a black marking in a cover element 42—which may be designed as a cover glass—to improve the visual quality of the two areas or the transition area between the two display areas. This can cover visible edges. Alternatively, the edges or transition areas or edges of one or both sheet films 30, 44 can be arranged, for example, by means of an opaque adhesive film.

[0056] Alternatively or additionally, a preferably light-transmitting film may be arranged in or above the backlighting unit 28 and / or on the sheet film, the film being printed and / or coated, at least partially, in the transition region between the two display areas, using an opaque material. The printed film is preferably arranged on the top surface of the first sheet film 30.

[0057] The backlight unit 28 can preferably be designed as a backlight unit, particularly a light source, such as one or more LEDs, OLEDs, and / or LED strips, and may also have a housing, reflector, light guide, diffuser, BEF, DBEF, and a first sheet film 30 or LCF. The first sheet film 30 is specifically designed to avoid reflections on the windshield. The second sheet film 44 is specifically arranged intersectingly with the first sheet film 30 and has a smaller area compared to the first sheet film 30. The smaller area of ​​the second sheet film 44 specifically defines an area visible only to passengers. In particular to avoid optical reflections and to improve the light direction of the second sheet film 44, the second sheet film 44 is preferably disposed on the back side of the liquid crystal panel 40, particularly on the back polarizer of the liquid crystal panel 40, by means of an optical bonding process, such as lamination using an optically transparent adhesive 48 or OCA.

[0058] In other words, the backlighting unit 28 can be specifically designed as a backlight, such as a standard edge backlight or a matrix backlight. In a further improvement, the backlighting unit 28 can have a local dimming function, thereby locally compensating for brightness differences in each observation area by adjusting the backlight illumination; this can be specifically designed as brightness adjustment. This enables consistent display quality because brightness differences in the observation areas can be compensated for through light loss in the structure. Furthermore, color differences in different observation areas can be compensated for through appropriate color mapping methods.

[0059] The cover element 42 can be designed as, for example, a cover glass 42, and is disposed on a portion of the liquid crystal panel 40, and in an advantageous design, on the second sheet film 44, by means of a material-fitting connection, through a suitable optical bonding method, such as by wet or hybrid bonding, using an optically transparent resin 46, or OCR 46. The cover element 42 can be made of mineral glass or plastic, such as polycarbonate. In a further improvement, the cover glass 42 can have a black marking on the back side.

[0060] In a favorable design, the backlight unit 34 can be designed to emit light with different brightness in one or more partial areas. In other words, the backlight unit 34 can emit light with different brightness. In particular, the brightness can be varied according to the partial area. In other words, each partial area can be backlit with an adjusted individual brightness. The backlight unit can be designed in particular as a local dimming backlight, especially a local dimming matrix backlight.

[0061] Figure 5 A schematic diagram of a display device 22 according to an embodiment of the present invention is shown. Figure 5 The display device 22 can especially be according to Figure 4 The display device 22 is designed accordingly. Furthermore, based on... Figure 5 The display device 22, in particular, can be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle.

[0062] According to Figure 4 The display device 22 is different, according to Figure 5 In this advantageous design, the second sheet film 44 is disposed on a portion of the first surface 50. The second sheet film 44 is therefore specifically disposed on the first surface 50 of the liquid crystal panel 40 facing the backlight unit 28. Furthermore, in this advantageous design, the covering element 42 is thus disposed on the liquid crystal panel 40, particularly by means of an optical adhesive material 46.

[0063] Figure 6 A schematic diagram of a display device 22 according to an embodiment of the present invention is shown. Figure 6 The display device 22 can especially be according to Figure 4 and / or Figure 5 The display device 22 is designed accordingly. Furthermore, based on... Figure 6 The display device 22, in particular, can be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle.

[0064] According to Figure 4 and / or Figure 5 The display device 22 is different, according to Figure 6The display device 22 has a third sheet film 54 with a plurality of parallelly arranged third sheets. The third sheet film 54 is arranged such that the longitudinal direction of the third sheets faces at an angle of 80° to 100° relative to the longitudinal direction of the first sheet film 30, and the longitudinal direction of the third sheets is parallel to the longitudinal direction of the second sheet film 44. Furthermore, the third sheet film 54 is disposed on a portion of the liquid crystal panel 40. In this advantageous design, the second sheet film 44 is disposed on a second portion of the second surface 52, and the third sheet film 54 is disposed on a first portion of the first surface 50, wherein the first and second portions overlap.

[0065] In other words, the second sheet film 44 and the third sheet film 54 are disposed on two opposite portions of the liquid crystal panel 40, wherein the two sheet films 44 and 54 completely overlap. In other words, the sheet films 44 and 54 are arranged on both sides of the liquid crystal panel 40.

[0066] The third sheet film 54 is disposed on the liquid crystal panel 40, particularly by means of a second optically transparent adhesive 56. In other words, the third sheet film 54 is fixed, bonded, or disposed on the liquid crystal panel 40, particularly a portion of the liquid crystal panel 40, by means of an adhesive and / or an adhesive film, particularly the second optically transparent adhesive 56.

[0067] In an alternative embodiment, both sheet films 44 and 54 can be arranged on one side of the liquid crystal panel 40, either on one side of the first surface 50 or on one side of the second surface 52.

[0068] Figure 7 A schematic diagram of a portion of a display device 22 according to an embodiment of the present invention is shown. Figure 7 The display device 22 can especially be according to Figure 4 , Figure 5 and / or Figure 6 The display device 22 is designed accordingly. Furthermore, based on... Figure 7 The display device 22, in particular, can be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle.

[0069] According to Figure 4 , Figure 5 and / or Figure 6 The display device 22 is different, according to Figure 7The display device 22 is shown from above, and shows a first sheet film 30 and a second sheet film 44 having a plurality of second sheet sheets 58 arranged in parallel. The second sheet film 44 and the first sheet film 30 are arranged opposite to each other such that the longitudinal direction of the second sheet sheet 58 is oriented at an angle of 80° to 100° relative to the longitudinal direction of the first sheet sheet 32 ​​of the first sheet film 30.

[0070] Figure 8 A schematic diagram of a portion of a display device 22 according to an embodiment of the present invention is shown. Figure 8 The display device 22 can especially be according to Figure 4 , Figure 5 and / or Figure 6 The display device 22 is designed accordingly. Furthermore, based on... Figure 8 The display device 22, in particular, can be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle.

[0071] According to Figure 4 , Figure 5 and / or Figure 6 The display device 22 is different, according to Figure 8 The display device 22 is shown from above and presents different display areas for different observers, particularly a first display area 60 and a second display area 62. A first image illustration can be displayed in the first display area 60, which is particularly visible to the driver and passengers. The second display area 62 can display a second image illustration, which may or may not be visible only to passengers. In this advantageous design, the first display area 60 is designed to be L-shaped, and the second display area 62 is designed to be rectangular, wherein the second display area 62 is particularly located in the upper right corner and is larger than the first display area 60.

[0072] Figure 9 A schematic diagram of a portion of a display device 22 according to an embodiment of the present invention is shown. Figure 9 The display device 22 can especially be according to Figure 4 , Figure 5 , Figure 6 and / or Figure 8 The display device 22 is designed accordingly. Furthermore, based on... Figure 9 The display device 22, in particular, can be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle.

[0073] According to Figure 8 The display device 22 is different, according to Figure 9The first display area 60 is designed as a rectangle. The second display area 62 is also designed as a rectangle and is positioned above the first display area 60 in the observer's viewing direction. The second display area 62 is particularly larger than the first display area 60.

[0074] Figure 10 A schematic diagram of a portion of a display device 22 according to an embodiment of the present invention is shown. Figure 10 The display device 22 can especially be according to Figure 4 , Figure 5 , Figure 6 , Figure 8 and / or Figure 9 The display device 22 is designed accordingly. Furthermore, based on... Figure 10 The display device 22, in particular, can be according to Figure 1 , Figure 2 and / or Figure 11 The display device 22 is arranged in the vehicle.

[0075] According to Figure 9 The display device 22 is different, according to Figure 9 The second display area 62 is arranged to the left of the first display area 60 in the observer's viewing direction.

[0076] Figure 11 A schematic diagram of a vehicle 20 having a display device 22 according to an embodiment of the present invention is shown. Figure 11 The display device 22 can especially be according to Figures 4 to 10 The display device 22 is designed accordingly. Furthermore, based on... Figure 11 The display device 22, in particular, can be according to Figure 1 and / or Figure 2 The display device 22 is arranged in the vehicle 20.

[0077] In this advantageous design, the display device 22 is arranged in front of the passenger 26 as a passenger display. With the aid of the display device 22, a first area 64 can be formed for displaying a first image illustration, specifically displaying the image illustration of a first display area for both the driver 24 and the passenger 26. The first area 64 can be specifically designed, or referred to as, a public viewing area 64. In other words, both the driver 24 and the passenger 26 can perceive the first image illustration displayed in the first area 64. For displaying the first image illustration in the first area 64, light that passes only through the first sheet film is specifically employed.

[0078] The display device 22 also forms a second region 66 for displaying a second image illustration, which is specifically displayed only to the passenger 26. The second region 66 may be specifically designed or referred to as the passenger region 66. In other words, only the passenger 26 can perceive the second image illustration displayed in the second region 66. The second image illustration is displayed in a designated area of ​​the liquid crystal display. To display the second image illustration in the second region 66, light that passes through the first and second sheet films and, in a further improvement, also passes through a third sheet film is specifically employed.

[0079] Figure 12 A schematic diagram of a method 70 for displaying two image illustrations using a display device according to an embodiment of the present invention is shown. The display device can be particularly adapted according to... Figures 4 to 11 The display device is designed according to [specific principles / relevant regulations]. Furthermore, this display device can be specifically designed according to [specific principles / relevant regulations]. Figure 1 , Figure 2 and / or Figure 11 The display device is installed in the vehicle.

[0080] In the first step 72 of method 70, light is emitted in the direction of the liquid crystal panel by means of a backlighting unit.

[0081] In the second step 74 of method 70, the light is guided in the horizontal direction by means of the first sheet film.

[0082] In the third step 76 of method 70, a first image is displayed on a first portion of the liquid crystal panel by means of the first portion of the guided light.

[0083] In the fourth step 78 of method 70, a second image illustration is displayed on a second portion of the liquid crystal panel by means of the second portion of the guided light.

[0084] In the fifth step 80 of method 70, the second portion of the light rays in the displayed image diagram is guided in the vertical direction by means of the second sheet film.

[0085] In a further improvement, steps 78 and 80 can be performed in a different order, with step 80 performed first and then step 78. Thus, light is first guided in step 80 by the second sheet film, and then an image is displayed on the second portion of the liquid crystal panel in step 78.

[0086] Figure 13 A schematic diagram of a method 70 for displaying two image illustrations using a display device according to an embodiment of the present invention is shown. This display device can be particularly adapted according to... Figures 4 to 11 The display device is designed according to [specific principles / relevant regulations]. Furthermore, this display device can be specifically designed according to [specific principles / relevant regulations]. Figure 1 , Figure 2 and / or Figure 11 The display device is installed in the vehicle. According to Figure 13 Method 70, in particular, can have the following characteristics: Figure 12 The method has 70 steps.

[0087] In the first step 72 of method 70, light is emitted in the direction of the liquid crystal panel by means of a backlighting unit.

[0088] In the second step 74 of method 70, the light is guided in the horizontal direction by means of the first sheet film.

[0089] In the third step 76 of method 70, a first image is displayed on a first portion area of ​​the liquid crystal panel by means of a first portion of the guided light.

[0090] In the fifth step 80 of method 70—which is performed prior to the fourth step 78 in this advantageous design—the second portion of the light is guided in the vertical direction by means of the second sheet film.

[0091] In the fourth step 78 of method 70, a second image illustration is displayed on a second portion of the liquid crystal panel by means of the second portion of the guided light.

[0092] In the sixth step 82 of method 70, the second part of the light is guided in the vertical direction by means of the third sheet film.

Claims

1. A display device (22) comprising a liquid crystal panel (40), a background illumination unit (28) for illuminating the liquid crystal panel (40), and a cover element (42), characterized in that: The background lighting unit (28) has a first sheet film (30) with a plurality of parallel first sheets (32), wherein the first sheet film (30) is arranged such that the longitudinal direction of the first sheets (32) is at least nearly horizontal. The display device (22) has a second sheet film (44) with a plurality of parallel second sheets (58), wherein the second sheet film (44) is arranged such that the longitudinal direction of the second sheets (58) is oriented at an angle of 80° to 100° relative to the longitudinal direction of the first sheet (32) of the first sheet film (30), and the second sheet film (44) is disposed on a portion of the liquid crystal panel (40).

2. The display device (22) according to claim 1, characterized in that, The first sheet film (30) is designed to guide light in the horizontal direction, and the second sheet film (44) is designed to guide light in the vertical direction.

3. The display device (22) according to claim 1 or 2, characterized in that, The second sheet film (44) is rectangularly designed.

4. The display device (22) according to claim 1 or 2, characterized in that, The covering element (42) is arranged on the liquid crystal panel (40) by means of an optical adhesive material (46).

5. The display device (22) according to claim 1 or 2, characterized in that, The covering element (42) is arranged on a portion of the liquid crystal panel (40) and on the second sheet film (44) by means of an optical adhesive material (46).

6. The display device (22) according to claim 1 or 2, characterized in that, An opaque marking is arranged at least partially on the covering element (42).

7. The display device (22) according to claim 1 or 2, characterized in that, The covering element (42) and / or optical adhesive material (46) are designed with coloring.

8. The display device (22) according to claim 1 or 2, characterized in that, The second sheet film (44) is disposed on the liquid crystal panel (40) by means of an optically transparent adhesive (48).

9. The display device (22) according to claim 1 or 2, characterized in that, The liquid crystal panel (40) has a first surface (50) and a second surface (52) opposite to the first surface (50), wherein the first surface (50) is arranged facing the background lighting unit (28), and the second surface (52) is arranged facing the cover element (42), and the second sheet film (44) is disposed on a portion of the first surface (50) or on a portion of the second surface (52).

10. The display device (22) according to claim 1 or 2, characterized in that, The display device (22) has a third sheet film with a plurality of parallel third sheets, wherein the third sheet film is arranged such that the longitudinal direction of the third sheet is oriented at an angle of 80° to 100° relative to the longitudinal direction of the first sheet of the first sheet film (30), and the longitudinal direction of the third sheet is oriented parallel to the longitudinal direction of the second sheet of the second sheet film (44), and the third sheet film (58) is disposed on a portion of the liquid crystal panel (40).

11. The display device (22) according to claim 10, characterized in that, The liquid crystal panel (40) has a first surface (50) and a second surface (52) opposite to the first surface (50), wherein the first surface (50) is arranged facing the background illumination unit (28), and the second surface (52) is arranged facing the cover element (42), the second sheet film (44) is arranged on a second portion area of ​​the second surface (52), and the third sheet film is arranged on a first portion area of ​​the first surface (50), and the first portion area and the second portion area are arranged overlappingly.

12. The display device (22) according to claim 1 or 2, characterized in that, The background lighting unit (28) is designed such that it emits light with different brightness in one or more partial areas.

13. A method (70) for displaying two image illustrations using a display device (22) according to any one of claims 1 to 12, comprising the following steps: Light is emitted in the direction of the liquid crystal panel (40) by means of the background lighting unit (28). The light is guided in the horizontal direction by means of the first sheet film (30). A first image is displayed on a first portion of the liquid crystal panel (40) by means of a first portion of the guided light. A second image is displayed on a second portion of the liquid crystal panel (40) by means of the second portion of the guided light. The second portion of the light rays in the displayed image diagram is guided in the vertical direction by means of the second sheet film (44).

14. A method (70) for displaying two image illustrations using a display device (22) according to any one of claims 1 to 12, comprising the following steps: Light is emitted in the direction of the liquid crystal panel (40) by means of the background lighting unit (28). The light is guided in the horizontal direction by means of the first sheet film (30). A first image is displayed on a first portion of the liquid crystal panel (40) by means of a first portion of the guided light. The second sheet film (44) guides the second portion of the light in the vertical direction. A second image illustration is displayed on a second portion of the liquid crystal panel (40) by means of a second portion of the guided light.

15. The method (70) according to claim 13, comprising the step of guiding a second portion of the light in the vertical direction by means of a third sheet film.

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