Liquid crystal display, lighting arrangement comprising a liquid crystal display and a backlight device, method for producing a liquid crystal display, data processing device, computer program product and manufacturing system

Abstract

Disclosed is a liquid crystal display (1) suitable for a lighting arrangement (2) of a motor vehicle, which comprises the liquid crystal display (1) and a backlighting device (3), wherein the backlighting device (3) of the lighting arrangement (2) is configured to illuminate the liquid crystal display (1), wherein the lighting arrangement (2) is configured to scatter light emitted by the backlighting device (3). The liquid crystal display (1) is configured to scatter the light emitted by the backlighting device (3). Furthermore, a lighting arrangement (2), a method for producing the liquid crystal display (1), a device for data processing, a computer program product and a production system are disclosed which are related to the liquid crystal display (1).

Description

The invention relates to a liquid crystal display suitable for a lighting arrangement of a motor vehicle, comprising the liquid crystal display and a backlight device, wherein the backlight device of the lighting arrangement is configured to transilluminate the liquid crystal display, wherein the lighting arrangement is configured to scatter light emitted by the backlight device.The invention further relates to a lighting arrangement for a motor vehicle, which lighting arrangement has a liquid crystal display and a backlighting device, wherein the backlighting device is configured to illuminate the liquid crystal display, wherein the lighting arrangement is configured to scatter light emitted by the backlighting device.The invention also relates to a method for manufacturing a liquid crystal display suitable for a lighting arrangement of a motor vehicle, wherein the lighting arrangement comprises, in addition to the liquid crystal display, a backlighting device for emitting light for transilluminating the liquid crystal display.The invention further relates to an apparatus for data processing, comprising a processor configured to execute the method.The invention also relates to a computer program product comprising instructions which, when the program is executed by a processor, cause the processor to execute the method.The invention further relates to a production system comprising the device for data processing.Signal functions of a motor vehicle, which can be provided by lighting arrangements, such as tail lights, brake lights, turn signal indicators or daytime running lights, in tail lights or in headlights, are frequently determined by the design. This has increased even further with the introduction of LED technology, since the small LED light sources, frequently used in a larger number, can be used much more flexibly than before the large, single incandescent lamp can be used as lighting means of a signal function and offer a wide variety of design possibilities in conjunction with the selected optical system.A modification of LED technology is found in the form of OLED technology, in which the lighting means is not small in punctiform fashion like an LED, but rather is designed to be planar and larger in order to form a desired lighting surface which is illuminated very homogeneously. The disadvantage of OLED technology compared to LED technology is that the costs of the OLED are much higher by very complex production methods, due to the different shape desired in each case by the design, i.e. no mass-produced product with always the same size and shape as the LED, and the low number of pieces. This is accompanied by the special, high requirements in the automotive sector, for example with respect to the temperature range (-40° C. to +85 ° C. or +100 ° C.), UV loading and force effects (vibrations, shocks, shaking) which are more critical for an OLED than for standard LEDs. A continuation in OLED technology is provided in that the OLED area is divided into individual, smaller, separately switchable subareas and thus an OLED display is produced to a certain extent. A disadvantage of OLED technology for automotive applications is the limitation to the color red.This has the result that alternative possibilities are sought in order to realize a similar configuration as can be made with OLED elements, as a planar luminous surface or as a segmented, display-like luminous surface.This is achieved on the one hand by the use of LEDs with a planar light guide element and optical units arranged in front for scattering and focusing the light which is emitted from the light guide in illumination arrangements. An additional housing behind the light guide can be provided, which reflects the light forward again. Overall, this makes it possible to provide a flatlight module which offers high performance, with homogeneous illumination of the entire surface and of any desired shape. Just as in the case of the OLED elements, when integrated into a lighting system, such as a tail light, a plurality of flatlight modules can then be positioned offset next to one another and one behind the other in order to produce the desired individual appearance of the signal function, for example of the tail light or tail brake light. With different LED colors, e.g. yellow or white, direction indicators and position or daytime running lights can also be realized.In order to provide a segmented light surface, an LCD or a smart glass display with a dye-doped liquid crystal, for example in black coloring, is provided in front of the flat light element, the segments of which display can be switched separately to transparent in order to realize different light signatures and animations.As a second concept, starting from a defined segmentation of the smart glass display, a likewise segmented backlighting can be configured, which is referred to as flatlight CMX (CMX= Commun MatriX). One possibility is the use of a reflector with an LED matrix, which corresponds to the segmentation of the display.Diffuser elements are provided in both systems. These are diffuser surfaces with a very small diffuser structure in order to ensure the homogeneous illumination as a complete backlighting of the display (first flatlight approach) or as a homogeneous illumination of each segment (second flatlight CMX approach).A diffuser element is usually either a thin, injection molded disc or a film with a one-sided diffuser structure. In the first FlatLight approach, it is the front cover pane of the FlatLight system, in the second FlatLight CMX approach it is a diffuser film between the reflector or optical system and the LC display, i.e. the liquid crystal display.It is the object of the invention to provide a liquid crystal display, a lighting arrangement, a method for producing a liquid crystal display, an apparatus for data processing, a computer program product and a production system of the type mentioned at the beginning, which are improved compared with the prior art.The above object is achieved by a liquid crystal display having the features of independent claim 1, by a lighting arrangement having the features of independent claim 10, by a method for producing a liquid crystal display according to claim 11, by a device for data processing having the features of independent claim 13, by a computer program product having the features of independent claim 14, and by a production system having the features of independent claim 15.Further features and details of the invention are evident from the dependent claims, the description and the drawings. Features and details which are described in connection with the liquid crystal display according to the invention naturally also apply in connection with the lighting arrangement according to the invention, the method according to the invention, the device according to the invention for data processing, the computer program product according to the invention and the production system according to the invention and vice versa, so that with regard to the disclosure with respect to the individual aspects of the invention, reference is or can always be made reciprocally.According to the invention, the liquid crystal display is configured to scatter the light emitted by the backlight device.The invention is based on the recognition that lighting arrangements in motor vehicles, such as headlights, turn signal indicators, brake lights and the like, are often exposed to considerable vibrations and temperature differences. Therefore, it is desirable to make these lighting arrangements as stable as possible. If the liquid crystal display itself is configured to scatter the light emitted by the backlighting device, a separate diffuser element, such as a transparent film or pane, between backlighting device and liquid crystal display and, if appropriate, the holder thereof can be dispensed with. By eliminating the separate diffuser element, costs during production can be reduced and the lighting arrangement can be constructed in a more compact and stable manner. In addition to its original function, the liquid crystal display itself can also perform an additional function, namely as a carrier of the diffuser element. The necessary functions of the illumination arrangement can thus be fulfilled by fewer elements.The liquid crystal display may include a back panel. The liquid crystal display may include a front panel. The rear pane is arranged in the lighting arrangement closer to the backlight arrangement than the front pane. A liquid crystal substance may be disposed between the back panel and the front panel. The term pane is to be understood here as being a wall that is transmissive, i.e., transparent, to light and that is made in particular of glass or plastic.A segmenting element can be arranged between the rear pane and the front pane. The segmenting element may have a rectangular shape. The segmenting element can have individual sections which can be selectively switched between a transparent state and an opaque state. The segmenting element can be designed as a grid-shaped mask. The individual sections can be arranged in rows and columns in the grid-shaped mask. The segmenting element can be configured to selectively optically obscure or expose segments of the liquid crystal substance. The segmenting element is preferably configured to be electronically switchable in order to selectively switch the individual sections of the segmenting element between the transparent and the opaque state. Portions of the segmenting element that are in the opaque state are preferably colored black. Portions of the segmenting element that are in the transparent state are preferably not colored.A control cable for driving the liquid crystal display may be provided on the liquid crystal display. The control cable can also serve for controlling the segmenting element, if present.The invention can be used equally for digital FlatLight systems as well as for FlatLight CMX systems. While there are differences in construction between these systems, both have in common a liquid crystal display which may be constructed as proposed herein. Accordingly, the invention can also be used in other existing or future lighting arrangements which are based on backlighting devices for transilluminating the liquid crystal display and can therefore advantageously include the proposed liquid crystal display. The backlight device is, in embodiments, an LED light source including a plurality of LEDs. As a result, it can be constructed in a power-saving, robust and compact manner.The liquid crystal display, as smart glasses, is preferably composed of few components. The two wafers-formed from glass or plastic films-are in embodiments ITO-coated and masked by the segmenting element in order to realize the desired segmenting and contacting to the control cable, which can be a flex conductor track, and are implemented with a certain cell gap, which is a distance of the two wafers from one another, which is filled with a dye-doped liquid crystal substance.Embodiments provide that the liquid crystal display carries a diffuser element, in particular on a surface. The surface may be provided on the back side sheet. The surface may additionally or alternatively be provided on the front side panel. A separate holder for the diffuser element can thus be dispensed with. Some embodiments provide that the liquid crystal display is inseparably connected to the diffuser element. This prevents the diffuser element from slipping or falling off due to vibrations or temperature fluctuations. Some embodiments even provide that the diffuser element is integrated into the liquid crystal display, such as into the back panel or into the front panel of the liquid crystal display. This provides a particularly stable and compact solution. Various embodiments of the above types are described in more detail below.Some embodiments provide that the liquid crystal display has a plurality of surfaces and at least one of the plurality of surfaces is configured to scatter the light emitted by the backlight device. A surface configured to scatter the light emitted by the backlight device may be a back surface facing the backlight device in the lighting assembly. The back side disc may have the back side surface. A surface configured to scatter the light emitted by the backlight device may alternatively or additionally be a front side surface facing away from the backlight device in the lighting arrangement. The front side panel may have the front side surface. The rear side surface is advantageously well protected from environmental influences in the installed state. The front side surface, on the other hand, is advantageously easily accessible in the installed state and can be correspondingly more easily remachined or renewed even if the liquid crystal display is installed in the motor vehicle. The front surface of the back panel and the back surface of the front panel are usually in contact with the liquid crystal substance of the liquid crystal display. These two further surfaces of the liquid crystal display can also be configured alternatively or additionally, both or only one of them, to scatter the light emitted by the backlighting device.Furthermore, it can be provided that one of the plurality of surfaces is a rear side surface of the liquid crystal display, which in the illumination arrangement faces the backlighting device and has a light-transmissive structuring in order to scatter the light emitted by the backlighting device before it has passed through the liquid crystal display. By providing on the rear side surface, the structuring can be protected particularly well against environmental influences. A particularly permanent scattering structuring can thus be provided. It is preferred that the rear side pane has the rear side surface. The phrase "before the light has passed through the liquid crystal display" may particularly mean "upon entry of the light into the liquid crystal display.".In some embodiments, one of the plurality of surfaces is a front surface of the liquid crystal display that faces away from the backlight device in the lighting assembly and has a light transmissive pattern to scatter the light emitted by the backlight device after passing through the liquid crystal display. By providing on the front side surface, the structuring can be particularly readily accessible. A particularly easily renewable or serviceable scattering structuring can thus be provided. It is preferable that the front side panel has the front side surface. The phrase "after the light has passed through the liquid crystal display" may mean, in particular, "upon emission of the light from the liquid crystal display".In embodiments, the light-transmissive structuring is provided by a light-transmissive, structured diffuser film. The diffuser sheet may be provided on the back surface, the front surface, or both. The diffuser film can be glued to the surface. The diffuser film can be a cost-effective and easily retrofitted solution for a diffuser element.Some embodiments provide that the light-transmissive structuring is provided by a light-transmissive, structured lacquer layer. A very long-lived diffuser element can thus be provided, since the paint layer can be permanently connected to the liquid crystal display, for example permanently due to vibration and temperature fluctuations. A lacquer of the lacquer layer is transparent in order not to prevent the light of the backlighting device from illuminating the liquid crystal display. The lacquer layer can be provided with the structuring in an imprint method, such as by applying the lacquer layer and then introducing a scattering structure or diffuser structure into the lacquer layer. In this context, it is to be understood inextricably that under normal operating conditions it is not necessary to expect detachment of the paint layer, even if vibrations or temperature fluctuations occur, as are to be expected in motor vehicles.According to a preferred embodiment of the liquid crystal element, it can be provided in the case of a liquid crystal element that the surface of the liquid crystal element, i.e. the front side or the rear side of the liquid crystal element, is provided directly with a light-transmissive structuring, for example with a light-scattering structure or optics. In the production process of the liquid crystal element, a corresponding light-transmissive structure can be integrated on the tool side in order to image the light-transmissive structuring directly onto the produced liquid crystal element, in particular the surface of the liquid crystal element. Corresponding diffuser structures or diffuser optics can be introduced into the tool, for example, by micro milling methods or laser methods.In some embodiments, the liquid crystal display includes a light transmissive panel containing particles to scatter light emitted by the backlight device as it passes through the liquid crystal display. Thus, the diffusion element may be integrated into the liquid crystal display. The pane can thereby function in particular as a volume spreader. Additional steps, such as the application of a film or a lacquer layer to be patterned, can then be dispensed with, which can simplify or even speed up the production of the liquid crystal display. The disc may be the rear disc. Additionally or alternatively, another pane may be the front pane.Other embodiments provide that a diffuse scattering structure is provided in the light-transmissive pane. The pane can be a glass pane or a plastic pane, such as a plastic film. The pane can be introduced by means of a, in particular laser-machined, structuring in a tool for casting or pressing the pane. It can be seen from the finished liquid crystal display that the tool must have included such a structuring during production, provided that this structuring is introduced directly into the pane. If the pane is a plastic film, it can have the structuring on one side, which can be produced in a roll-to-roll process in an imprint method. Once the plastic pane has been injection-molded, the structuring can in turn be produced by molding a laser-machined structure which is provided on an injection-molding tool. The scattering structure can alternatively be etched or lasered into the pane, in particular if it is a glass pane. The application of an etching structure or laser structure, in particular on the front side surface, i.e. the light exit surface of the liquid crystal display, can achieve a matt surface and a desired scattering effect, for example even in the case of simple direct backlighting of segments of the liquid crystal display with LED light sources of a backlighting device. Alternatively, one or more of the surfaces of the liquid crystal display may be satined to scatter the light emitted by the backlight device. More specifically, at least one of the surfaces of the liquid crystal display in contact with the liquid crystal substance may be satinized.Thus, either by introducing particles into one or both panes or by directly treating one or both panes, there are likewise a wide variety of possibilities for setting one or both of the panes directly, i.e. without applying an additional film or lacquer layer, to scatter the light emitted by the backlighting arrangement.Embodiments provide that the liquid crystal display comprises a Fresnel optics for collecting and directing the light emitted by the backlight device. For example, the micro-optical or diffractive structuring of the liquid crystal display can be embodied as a Fresnel lens, which represents a possible embodiment of the Fresnel optics in order to collect and direct the light of the backlighting device. The liquid crystal display can thus additionally serve as a carrier for the Fresnel optics, which enables an even more compact and more stable construction, since an additional carrier for the Fresnel optics can be dispensed with. The Fresnel optics may be arranged between the front side pane and the rear side pane. The Fresnel optics can be arranged in particular on the rear side surface of the rear side pane. Thus, the potentially sensitive Fresnel optics can be protected against environmental influences.In some embodiments, the liquid crystal display includes effect means for generating at least one of a color effect and a sparkle effect for the light transmitted through the liquid crystal display. For example, the light-transmissive pane can be colored and / or contain glitter particles. Alternatively or additionally, a colored film or a film with sparkle particles can be attached to the rear side surface and / or the front side surface. The diffuser film can in particular be colored and / or comprise sparkle particles. Alternatively or additionally, the paint can be colored and / or comprise sparkle particles. The colored film, the colored pane or the colored paint have the advantage that the light sources of the backlighting device, such as in particular light-emitting diodes (LEDs), can emit white light instead of light of a specific color. Thus, white LEDs can be used for all types of lighting arrangements, the light of which can be colored by the colored film, the colored pane or the colored paint. It is then sufficient to keep a single type of LED ready for a plurality of different lighting arrangements, which is advantageous for storage.Some embodiments provide that the liquid crystal display has an anti-reflection coating, in particular on the front side surface which faces the environment in the lighting arrangement. Thus, the liquid crystal display can also provide the function of an anti-reflection surface, which therefore does not have to be provided on an additional element. The anti-reflection coating can be provided in particular on the front-side pane and there especially on the front-side surface.Moreover, the object of a lighting arrangement for a motor vehicle, which has a liquid crystal display and a backlight device and which is improved over the prior art, is achieved by the lighting arrangement according to claim 10, as described below. The lighting arrangement is intended for a motor vehicle and comprises a liquid crystal display and a backlighting device. The backlighting device of the lighting arrangement is configured to illuminate the liquid crystal display. The illumination arrangement is configured to scatter light emitted by the backlight device. Namely, the liquid crystal display is configured to scatter the light emitted by the backlight device. Thereby, the lighting device is configured to achieve the advantages of the liquid crystal display described above. The embodiments of the liquid crystal display discussed above and its advantages are referred to and referred to herein. Repetition is therefore omitted at this point.Moreover, the object is to provide a method for manufacturing a liquid crystal display suitable for a lighting assembly of a motor vehicle, which is improved over the prior art, by the method according to claim 11, as described below.The method is for manufacturing a liquid crystal display suitable for a lighting assembly of a motor vehicle. The lighting arrangement comprises, in addition to the liquid crystal display, backlighting means for emitting light for transilluminating the liquid crystal display. The liquid crystal display is therefore transparent to the light at least in sections and / or temporarily during operation.The method includes setting up the liquid crystal display to scatter the light emitted by the backlight device. Thereby, the liquid crystal display discussed above having the advantages already discussed in its embodiments is obtainable. Again, reference is made to the above discussions and reference is made, so repetition is omitted.Generally, the method may include one or both of the following processes for configuring the liquid crystal display to scatter the light emitted by the backlight device:providing a light transmissive pattern on a surface of the liquid crystal display to scatter the light emitted by the backlight device; and / orproviding a light transmissive panel of the liquid crystal display containing particles to scatter the light emitted by the backlight device.The setting up of the liquid crystal display to scatter the light emitted by the backlight device may be performed on a back panel of the liquid crystal display. The setting up of the liquid crystal display to scatter the light emitted by the backlight device may additionally or alternatively be performed on the front panel of the liquid crystal display.The setting of the liquid crystal display to scatter the light emitted by the backlight device may be performed on a back surface of the back panel such that the back surface is one of the surfaces to scatter the light emitted by the backlight device. The setting up of the liquid crystal display to scatter the light emitted by the backlight device may additionally or alternatively be performed on a front surface of the front panel such that the front surface is one of the surfaces to scatter the light emitted by the backlight device.In the method, one or more of the following processes, individually or in combination, can be used in particular.An embodiment of the method provides for modifying the back panel of the liquid crystal display, in particular:• Providing the rear panel of the liquid crystal display as a volume spreader, i.e. integrating light-scattering particles into a glass pane or a disk-shaped film or into an injection-molded pane of the rear panel; and / or• Colouring the rear sheet, in particular the glass sheet or the sheet or a thin injected sheet of the rear sheet.One embodiment of the method provides for modifying a rear side surface of the rear side pane, in particular:• applying a diffuse etching structure or laser structure to the rear side surface; and / or• Application of a lacquer layer to the rear side surface and introduction of a scattering structure / diffuser structure into the lacquer layer, in particular by means of an imprint process; and / or• creating a diffuse scattering structure on the back surface of the disc, e.g. by inserting a lasered structure into a tool for casting or pressing the disc; and / or• Providing a disc-shaped plastic film as the rear-side disc and creating a one-sided structuring on the rear-side surface in a roll-to-roll process by means of an imprint process or by means of a thin injection-molded plastic disc with the molding of a laser-machined structure of an injection-molding tool on the rear-side surface; and / or• Providing an applied structure over the whole surface or adapted to a segmentation of the liquid crystal display with corresponding sub-regions; and / or• Application of a micro-optical and / or diffractive structuring or optics in segment surfaces for a simple construction with direct backlighting; for example, the micro-optical or diffractive structuring of the rear side surface can be implemented as a Fresnel lens in order to collect and direct the light of the LED light source; and / or• Application of an anti-reflection coating, optionally in addition to other structures, such as the diffractive structure or the Fresnel optics.An embodiment of the method provides for modifying the front panel of the liquid crystal display, in particular:• colouring the front panel, such as a glass pane or a film / moulded pane of the front panel, in particular in red for tail lamp functions, in yellow for turn indicators or with a grey colouring or another possible and desired colour; and / or• introducing visible effect devices or particles into the front-side pane, in particular into the glass pane, e.g. for a sparkling effect; and / or• Application of a printed film to the front surface of the front panel, e.g. with the segmentation grid in a different colour or a desired decoration or pattern or effect in the segment areas, for a special effect or an individual appearance in the unexposed and illuminated state; and / or• Application of an etching structure or laser structure on the front side surface of the front side pane, i.e. the light exit surface, in order to achieve a matt surface and a desired scattering effect, e.g. also with a simple direct backlighting of the segments with LED light sources; and / or• Application of an anti-reflection coating, optionally in addition to other structures, such as the diffractive structure or the Fresnel optics.The modifications of the front and rear side panels and surfaces thereof may be combined with each other as desired in embodiments unless they conflict. This means in particular that one or both of the panes can be modified simultaneously in more than one way, such as both colored and surface structured and can be provided with particles on the inside.Further, the object is to provide a data processing apparatus improved over the prior art, achieved by the apparatus according to claim 13, as described below.According to the invention, the data processing device comprises a processor configured to perform the method described above. As a result, it is configured to achieve the advantages of the method. The data processing device may be embodied as a microcontroller, such as in particular a control unit of a manufacturing system or a single manufacturing machine for manufacturing the liquid crystal display. The data processing device may be configured to operate the manufacturing system or the manufacturing machine. The device for data processing can also be integrated in the control unit. In particular, it may be configured to configure the liquid crystal display to scatter the light emitted by the backlight device. The data processing device may include a memory. The memory may store a program having instructions to the data processing device so that the data processing device may execute the method. The device for data processing is preferably configured to carry out the method steps described above and the developments thereof in any combination with one another, provided that the method steps and developments do not conflict with one another in this case.Further, the object is to provide a computer program product improved over the prior art, achieved by the computer program product according to claim 14, comprising instructions which, when the program is executed by a processor, cause the latter to execute the method described above, as described below.The computer program product may be an electronic or optical data storage device, such as a memory chip, a magnetic memory or an optical memory. The manufacturing system may include the computer program product. Instructions stored on the computer program product may cause the processor to operate the manufacturing system or a single manufacturing machine therefrom to achieve the advantages discussed in connection with the method. The computer program product can be part of the apparatus for data processing. The computer program product can be, in particular, part of the microcontroller. The computer program product may include firmware for the microcontroller. The computer program product may alternatively include software for the microcontroller.The object of the invention is furthermore to provide a production system of the type mentioned at the beginning which is improved over the prior art, which is achieved by the production system according to claim 15, as described below.According to the invention, the production system has the above device for data processing. Thereby, it is configured to perform the above-described method and thereby manufacture the liquid crystal display according to the present invention.A preferred manufacturing system comprises at least one manufacturing machine. However, if multiple different processing steps are required, the manufacturing system may include two or more corresponding manufacturing machines configured to sequentially or simultaneously perform the method steps required to manufacture the liquid crystal display. The production system can thus include, for example, an etching machine and / or an imprint process machine. Other manufacturing machines of the manufacturing system, which may be necessary, will be immediately apparent to those skilled in the art from the process steps discussed above to be carried out.The invention is explained in more detail below with reference to the accompanying drawings. The following shows: FIG. 1 shows an embodiment of a liquid crystal display according to the invention from a first perspective; FIG. 2 shows the embodiment of the liquid crystal display according to the invention from a second perspective; FIG. 3 shows an embodiment of a lighting arrangement according to the invention from a first perspective; FIG. 4 shows the embodiment of the lighting arrangement according to the invention from the second perspective; and FIG. 5 shows an embodiment of a method for manufacturing the liquid crystal display according to the invention.Fig. 1 shows an embodiment of a liquid crystal display 1 according to the invention from a first perspective. FIG. 2 shows the embodiment of the liquid crystal display 1 according to the invention from FIG. 1 from a second perspective. The liquid crystal display 1 is illustrated in FIGS. 1 and 2 in a disassembled view in order to be able to better recognize and describe its individual elements. The liquid crystal display 1 is suitable for a lighting arrangement 2 of a motor vehicle (not shown) comprising the liquid crystal display 1 and a backlight device 3. The lighting arrangement 2 is illustrated in FIGS. 3 and 4.The liquid crystal display 1 includes a back panel 4, a front panel 5, and a segmenting member 6 disposed between the back panel 4 and the front panel 5. The two panes 4, 5 are transparent to light. Both panes 4, 5 are, for example, glass panes, but one or both are manufactured from plastic film in embodiments not shown. The segmenting element 6 is configured to switch between a transparent and an opaque state in sections in order to thus switch segments of the liquid crystal display 1 temporarily transparent or opaque to light.Between the rear pane 4 and the front pane 5 in the assembled state of the liquid crystal display 1 a liquid crystal substance (not shown) is arranged, which here comprises, by way of example, a dye-doped liquid crystal. On the front-side pane 5, a control cable 7, which is designed as a flex conductor, is provided for driving the liquid crystal display 1 and its segmenting element 6.As discussed in detail below, the liquid crystal display 1 is configured to scatter the light emitted by the backlight device 3. Thus, the liquid crystal display 1 provides a scattering function. Separate scattering elements which were previously required can therefore be dispensed with in the lighting arrangement 2.The liquid crystal display 1 has a plurality of surfaces 8 a- d, and at least one of the plurality of surfaces 8 a- dis configured to scatter the light emitted by the backlight device 3. In FIG. 1, as the surfaces 8 a- d, a front side surface 8 aof the rear side glass 4 and a front side surface 8 bof the front side glass 5 are shown. In FIG. 2, as surfaces 8 a- d, a back surface 8 cof the back side plate 4 and a back surface 8 dof the front side plate 5 are shown.One of the plurality of surfaces 8 a- d, namely the front side surface 8 bof the front side pane 5, which is facing away from the backlighting device 3 in the lighting arrangement 2 has a light-transmissive structuring in order to scatter the light emitted by the backlighting device 3 after it has passed through the liquid crystal display 1. The structuring is thus arranged downstream of the liquid crystal substance in a beam path of the light. Here, for example, the light-transmissive structuring of the front side surface 8 bof the front side pane 5 is provided by a light-transmissive, structured diffuser film 9. The diffuser sheet 9 simultaneously serves as an effect means for producing a color effect and a sparkling effect for the light transmitted through the liquid crystal display 1. The diffuser film 9 is therefore colored yellow by way of example and has sparkle particles. The liquid crystal display 1 can thus be used in a direction indicator of a motor vehicle, which is a particular embodiment of a lighting arrangement 2.Another of the plurality of surfaces 8 a- d, namely the rear side surface 8 cof the rear pane 4, which faces the backlight device 3 in the lighting arrangement 2 has a further light-transmissive structuring in order to scatter the light emitted by the backlight device 3 before it has passed through the liquid crystal display 1. The further structuring is thus arranged upstream of the liquid crystal substance in the beam path of the light. Here, for example, the further light-transmissive structuring of the rear side surface 8 cof the rear side pane 4 is provided by a light-transmissive, structured lacquer layer 10. The structuring of the lacquer layer 10 was produced by means of an imprint process, by means of which the structuring was introduced into the lacquer layer 10. The further structuring of the rear pane 4 is also designed as a Fresnel lens in order to collect and direct the light emitted by the backlighting device 3. The back glass 4 also contains particles for diffusing the light emitted by the backlight device 3 while passing through the liquid crystal display 1.In the embodiment shown, therefore, three times the scattering takes place: twice on the rear pane 4 and once on the front pane 5, wherein in addition the light is collected and directed on the rear pane 4 before it passes through the liquid crystal substance, and a color and sparkling effect for the light is also produced on the front pane 5.FIG. 3 shows the lighting arrangement 2 in an embodiment according to the invention from a first perspective. FIG. 4 shows the lighting arrangement 2 from FIG. 3 from a second perspective. The illumination arrangement 2 has the backlighting device 3. The backlighting device 3 comprises a printed circuit board 11 which carries control electronics 12 and a multiplicity of light-emitting diodes 13. A segmenting intermediate piece 14 of the lighting arrangement 2 delimits light emitted by individual light-emitting diodes 13 to corresponding sections of the segmenting element 6 of the liquid crystal display 1. it is thus ensured that each light-emitting diode 13 illuminates only exactly one corresponding section of the segmenting element 6, so that sections of the liquid crystal display 1 can be switched to a transparent or opaque state by means of the segmenting element 6 in a precisely targeted manner without adjacent light-emitting diodes 13 illuminating the sections to be switched in an undesired manner. The rear pane 4 of the liquid crystal display 1 is located closer to the backlight device 3 than the front pane 5. the lighting arrangement 2 comprises the liquid crystal display 1 according to the embodiment from FIGS. 1 and 2. therefore the lighting arrangement 2 is, for example, a direction indicator assembly.Fig. 5 shows an embodiment of a method for manufacturing the liquid crystal display 1 according to the invention. It serves here, for example, to produce the liquid crystal display 1 from FIGS. 1 and 2, which is contained in the lighting arrangement 2 from FIGS. 3 and 4. The method comprises the step S 51 of setting the liquid crystal display 1 to scatter the light emitted by the backlight device 3. This step here comprises, by way of example, providing a light-transmissive structuring on a surface 8 a- dof the liquid crystal display 1 in order to scatter the light emitted by the backlighting device 3. This is done here by a manufacturing system (not shown) including a data processing apparatus according to the invention comprising a computer program product according to the invention. The production system adheres the diffuser film 9 to the front side surface 8 bof the front side pane 5; the production system further applies the lacquer layer 10 on the rear side surface 8 cof the rear side pane 4 and structures the latter by means of an imprint process. By way of example, the rear side pane 4 and the front side pane 5 are produced on different production machines of the production system, since their production each requires different technical processes.Further, the setting up of the liquid crystal display 1 here includes providing a light transmissive sheet 4 of the liquid crystal display 1 containing particles to scatter the light emitted by the backlight device 3. The production system introduces the particles into the rear pane 4 during production by way of example.It is clear to the person skilled in the art in the light of the present disclosure that in embodiments not shown, alternatively or additionally, other or at least further production steps for setting up the liquid crystal display 1 are possible to scatter the light emitted by the backlight device 3. These have been discussed in detail above in the general part of the description.In other words, it is thus made possible, by modifying the LCD or the smart glass display, which are special forms of the liquid crystal display 1, to be able to dispense with components of the flat light system and to simplify the overall system and to be able to tune to one another more easily, and to generate and use further advantages, such as for example in the case of costs or appearance. A surface 8 a- d, such as the rear side surface 8 c, of a rear side pane 4 of the liquid crystal display 1, or the rear side surface 8 cof a rear side film or an injection molded pane of the liquid crystal display 1, when it is constructed as a film display or as a plastic display, can be provided with a structuring in various ways in order to save a diffuser element from the overall system of the lighting arrangement 2. The rear side surface 8 cof the liquid crystal display 1 can be given, for example, a structuring which is either applied subsequently to the pane 4, for example by etching or laser processing, or by an imprint process (such as the lacquer layer 10 and pattern introduction into the lacquer layer 10), or which is already defined beforehand in the production process of the pane 4, 5 and is applied to the rear side surface 8 c. The same applies to the front-side pane 5 and in particular its front-side surface 8 b.In addition, the possibility is provided of modifying the panes 4, 5 of the liquid crystal display 1 itself, for example by integrated particles, such as, for example, as decoration or for diffusivity, by a defined coloring or by an additional coating, e.g. an anti-reflection coating, which can be provided in particular on the front side surface 8 bof the front side pane 5.List of reference characters1 Liquid crystal display 2 Lighting arrangement 3 Backlighting device 4 Rear pane 5 Front pane 6 Segmenting element 7 Control cable 8 a- d Oberflächen 9 Diffuser foil 10 Lacquer layer 11 Circuit board 12 Control electronics 13 Light emitting diodes 14 Segmenting intermediate piece

Claims

Liquid crystal display (1) suitable for a lighting arrangement (2) of a motor vehicle, comprising the liquid crystal display (1) and a backlight device (3), wherein the backlight device (3) of the lighting arrangement (2) is configured to transilluminate the liquid crystal display (1), wherein the lighting arrangement (2) is configured to scatter light emitted by the backlight device (3), characterized in that the liquid crystal display (1) is configured to scatter the light emitted by the backlight device (3).The liquid crystal display (1) according to claim 1, characterized in that the liquid crystal display (1) has a plurality of surfaces (8a-d), and at least one of the plurality of surfaces (8a-d) is configured to scatter the light emitted by the backlight device (3).The liquid crystal display (1) according to claim 2, characterized in that one of the plurality of surfaces (8a-d) is a back surface (8c) of the liquid crystal display (1) facing the backlight device (3) in the lighting assembly (2) and having a light transmissive pattern to scatter the light emitted by the backlight device (3) before passing through the liquid crystal display (1).The liquid crystal display (1) according to claim 2 or 3, characterized in that one of the plurality of surfaces (8a-d) is a front surface (8b) of the liquid crystal display (1) facing away from the backlight device (3) in the lighting assembly (2) and having a light transmissive pattern to scatter the light emitted by the backlight device (3) after passing through the liquid crystal display (1).Liquid crystal display (1) according to claim 3 or 4, characterized in that the light-transmissive structuring is provided by a light-transmissive, structured diffuser film (9).Liquid crystal display (1) according to Claim 3 or 4, characterized in that the light-transmissive structuring is provided by a light-transmissive, structured lacquer layer (10).Liquid crystal display (1) according to one of the preceding claims 3 to 5, characterized in that the light-transmissive structuring is provided by a surface structuring of the surface of the liquid crystal display (1).A liquid crystal display (1) according to any preceding claim, characterized in that the liquid crystal display (1) comprises a light transmissive sheet (4, 5) containing particles for diffusing the light emitted by the backlight device (3) while passing through the liquid crystal display (1).Liquid crystal display (1) according to one of the preceding claims, characterized in that the liquid crystal display (1) has a Fresnel optical unit in order to collect and direct the light emitted by the backlighting device (3).A liquid crystal display (1) according to any preceding claim, characterized in that the liquid crystal display (1) comprises effect means for generating at least one of a color effect and a sparkle effect for the light transmitted through the liquid crystal display (1).Lighting arrangement (2) for a motor vehicle, comprising a liquid crystal display (1) and a backlight device (3), wherein the backlight device (3) is configured to illuminate the liquid crystal display (1), characterized in that the liquid crystal display (1) is a liquid crystal display (1) according to any one of claims 1 to 10.Lighting arrangement (2) according to claim 11, characterised in that the lighting arrangement (2) is configured to scatter light emitted by the backlighting device (3),A method for manufacturing a liquid crystal display (1) suitable for a lighting arrangement (2) of a motor vehicle, the lighting arrangement (2) having, in addition to the liquid crystal display (1), backlighting means (3) for emitting light for transilluminating the liquid crystal display (1), the method comprising: - setting the liquid crystal display (1) to scatter the light emitted by the backlighting means (3).The method according to claim 13, comprising: - providing a light-transmissive pattern on a surface of the liquid crystal display (1) to scatter the light emitted by the backlight device (3); and / or - providing a light-transmissive disc (4, 5) of the liquid crystal display (1) containing particles to scatter the light emitted by the backlight device (3).

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