Display device and means of transport

Abstract

The present invention relates to a display device (1) and a means of transportation with such a display device (1). The display device (1) has a display panel (2) with a backlight (3) for the display panel (2). The backlight (3) has a reflector (30) consisting of a plurality of modules (300, 300') with a plurality of reflectively designed cavities (31), each of the individual cavities (31) having a surrounding wall (34). A light source (32) is arranged in the respective cavities (31), wherein a reflector element (304, 304', 304") of a first module (300, 300') has an irregular division (301, 301') to an adjacent reflector element (304, 304', 304") of a second module (300, 300').

Description

[0001] The present invention relates to a display device comprising a display panel and a backlight for the display panel, as well as a means of transportation with such a display device. Such display devices are used today in almost every means of transportation, for example, a motor vehicle.

[0002] The number and size of display devices in vehicles are constantly increasing. Display devices can be found, for example, as instrument clusters for the driver, central displays, and passenger displays. Non-self-illuminating transmissive displays require backlighting for image display. The purpose of the backlighting is to illuminate the display panel as evenly as possible across its entire active area, in order to create a homogeneous display right to the edges.

[0003] Matrix backlights utilize a multitude of light sources arranged in a matrix to generate light. A reflector directs the light from these sources towards the display panel.

[0004] Display devices with a display panel and a backlight for the display panel in various embodiments are known to those skilled in the art. For example, DE 10 2022 205 566 A1 describes a display device and a means of transport with such a display device. The display device has a display panel and a backlight for the display panel. The backlight comprises a reflector consisting of a plurality of modules with a plurality of reflectively designed cavities and a plurality of light sources arranged in each of the cavities.

[0005] US 2018 / 372300 A1 describes a display device with a display panel and a backlight for the display panel. The backlight comprises a reflector consisting of a plurality of modules with a plurality of reflectively designed cavities and a plurality of light sources arranged in each cavity. The reflector, which consists of several reflector elements, has a regular, linear division. A first reflector element, comprising a plurality of first cavities and a first overlap section, is arranged to overlap a section of the backlight, with each of the plurality of first cavities being located at a position corresponding to a relevant first light source, and the first overlap section being located along an outer edge of the first reflector element.A second reflector element, comprising a plurality of second cavities and a second overlap section, is arranged to also overlap a section of the backlight, with each of the plurality of second cavities being provided at a position corresponding to a relevant plurality of second light sources, and the second overlap section being provided along an outer edge of the second reflector element and overlapping the first overlap section of the first reflector element.

[0006] As the size of display devices increases, so does the size of the backlight, along with the number of reflector elements required. Such large backlights typically consist of multiple modules, each containing a reflector element. The individual reflector elements of each module are linearly divided in the overlapping area with an adjacent module to ensure precise manufacturing and alignment with each other and with the light sources arranged in the cavities. High-precision manufacturing and alignment are complex and therefore expensive. Less effort and lower costs can be achieved through less precise manufacturing and alignment.

[0007] A disadvantage of this design is that the linear division of the reflector creates an optical loss in the form of a dark line between adjacent reflector elements in the overlap area between the individual modules, resulting in a local reduction in brightness. This reduction is attempted to be compensated for by adjusting the brightness of the individual light sources in the area of ​​the division. However, even after this compensation, the viewer of the display still perceives a dark line in the area of ​​the linear division of the reflector elements in the overlap area between the individual modules.

[0008] The present invention is based on the objective of providing an improved display device with a backlight and a means of transport with such a display device, without an optical loss with a local reduction in brightness and a dark line visible to the viewer in the overlap area of ​​the individual reflector elements between the adjacent modules.

[0009] This problem is solved according to the invention by a display device according to the preamble of independent claim 1 together with the features of the characterizing part of independent claim 1 and by a means of propulsion according to claim 10. Advantageous embodiments of the invention are the subject of the dependent claims.

[0010] The invention provides a display device with a display panel and a backlight for the display panel, wherein the backlight comprises a reflector consisting of a plurality of modules with a plurality of reflectively designed cavities, wherein each of the individual cavities has a circumferential wall, wherein a light source is arranged in each of the cavities, and wherein each module has a reflector element, wherein a reflector element of a first module has an irregular division to an adjacent reflector element of a second module.

[0011] The reflector, positioned between the light sources and the display panel, has a modular design. Each module comprises a circuit board with mounted light sources and a reflector element. Each cavity of a reflector element is assigned at least one light source, or potentially several, depending on the application. The reflector element is preferably made of plastic or an elastomer, such as polycarbonate with an admixture of titanium dioxide to achieve the desired reflectivity. The individual reflector elements can thus be manufactured quickly and cost-effectively in large quantities using an injection molding process.

[0012] The irregular division between the reflector elements of the modules according to the invention leads to a precise alignment and positioning of the adjacent modules in the overlap area relative to each other, whereby the modules in the overlap area exhibit the same optical properties as in the center of a reflector element of a module. No reduction in brightness or overexposure occurs in the overlap area between the individual adjacent reflector elements of a module, which has the advantage that no visible line is formed between the individual adjacent reflector elements of the modules in the overlap area for the observer. Thus, no optical loss occurs with a local reduction in brightness or overexposure in the overlap area of ​​the individual adjacent modules between the reflector elements.

[0013] The use of modules also has the advantage that the reflector is composed of smaller reflector elements, which are easier to manufacture and handle. The required production tools are smaller, allowing for faster tooling and a larger pool of manufacturers capable of producing them. Furthermore, the modules can be used for differently designed display devices, which is generally not possible with a single-piece reflector.

[0014] The reflector's reflectively designed cavities direct the light emitted from the light sources towards the display panel, ensuring homogeneous illumination across the entire surface. This eliminates the need to adjust the brightness of individual light sources, particularly in the overlapping areas of the reflector elements of adjacent modules. The reflector's cavities can be arranged, for example, in a rectangular or hexagonal grid. Both rectangular and hexagonal arrangements allow the reflector to be constructed as a continuous matrix of cavities.

[0015] According to one aspect of the invention, the division between the cavities of the reflector elements of the adjacent modules is irregular. This has the advantage that the walls of the cavities in the overlap area of ​​the interconnected reflector elements of the modules are not divided and are thus completely sealed all around. This prevents any gap from forming between the individual adjacent cavities of the reflector elements of the modules, ensuring that the individual cavities are always completely sealed all around. Therefore, no light can pass from one cavity into an adjacent cavity, which would otherwise lead to over-illumination of the individual cavities in the overlap area between the reflector elements of the adjacent modules.

[0016] According to one aspect of the invention, the irregular division is achieved by cavities in the reflector elements of adjacent modules. The cavities are divided such that a first part of the cavity is formed by a first reflector element and a second part by a second reflector element. An advantage is that the wall thicknesses between the individual cavities are maintained. Furthermore, gaps or joints between the reflector elements can be illuminated. The upper surface of the reflector between the divided reflector elements corresponds approximately to the area of ​​the reflector without division, which contributes to homogeneous illumination across the entire surface of the reflector.

[0017] The irregular division can also run between two cavities of adjacent modules, or – at another subsequent point of the reflector element – ​​through a cavity, which thus divides into two adjacent modules.

[0018] According to one aspect of the invention, the surrounding walls of the individual cavities in the area of ​​irregular division are formed by walls of the cavities of the reflector element of the first module and by adjacent walls of the cavities of the reflector element of the second module. This has the advantage that the cavities of the reflector elements in the overlap area between the interconnected modules are completely sealed around their perimeter, forming a reflector consisting of a continuous matrix of cavities. The completely sealed cavities orient the light emerging from the light sources towards the display panel, resulting in homogeneous illumination of the display panel right to the edge, without any reduction in brightness or overexposure in the area of ​​division that is visible to the viewer.

[0019] According to one aspect of the invention, the walls of the reflector elements of the adjacent modules are designed to overlap. The overlap occurs directly between the respective cavities of the reflector elements of the neighboring modules. This has the advantage that no gap is created between the modules to be joined, i.e., the individual cavities of the reflector elements, and that they connect seamlessly without any gaps. Light cannot pass through a gap in the form of a slit between the adjacent cavities into a neighboring cavity of a reflector element, thus preventing overexposure or even light loss.

[0020] According to one aspect of the invention, the reflector elements of the adjacent modules have a joint in the area of ​​the irregular division between the walls of the cavities. This has the advantage that the reflector elements can expand in the event of increased heat generation, resulting in better heat distribution. Furthermore, this allows the individual reflector elements to be manufactured precisely and aligned precisely with each other and with the light sources arranged in the cavities during assembly.

[0021] According to one aspect of the invention, the modules are snapped, screwed, glued, or riveted to a support element. Various methods can be used to attach the modules, each consisting of a circuit board with the light sources and a reflector element, to a support element. Besides snapping or screwing, bonding with liquid adhesive or adhesive tape is possible. Alternatively, the modules can be riveted, e.g., hot-riveted. The reflector can be provided with suitable rivets for this purpose, if required. The choice of fastening method is at the discretion of the person skilled in the art. Naturally, several methods can also be combined. This has the advantage that the individual modules are firmly arranged in their positions relative to one another and cannot slip.

[0022] According to one aspect of the invention, the walls of the module cavities are rounded, and the cavities are designed to reflect the light emitted by the light sources toward the display panel. The rounding allows the emitted light to be reflected more precisely toward the display panel. Preferably, the light sources are side-emitting LEDs, particularly LEDs that emit light from all sides. The use of side-emitting LEDs has the advantage of preventing the formation of light spots in the backlight. This ensures a particularly homogeneous illumination of the display panel.

[0023] According to one aspect of the invention, the walls of the module cavities are planar, and the cavities are designed to reflect the light emitted by the light sources toward the display panel. An advantage is that the planar walls of the reflector cavities are easy and inexpensive to manufacture due to their geometry, as no expensive molds or tools are required. A further advantage is that the planar walls of the reflector cavity orient the light emerging from the light source toward the display panel and, in particular, direct it very effectively into the transition area of ​​an adjacent cavity, thus achieving a homogeneous light distribution in the transition area between the individual cavities. Preferably, the light source is a side-emitting LED.The use of such a light-emitting diode ensures a particularly homogeneous illumination of the display panel.

[0024] Preferably, a display device according to the invention is used in a means of transport in the automotive sector. The means of transport can be, for example, a motor vehicle, but alternatively also an aircraft, a rail vehicle or a watercraft.

[0025] Further features of the present invention will become apparent from the following description and the attached claims in conjunction with the figures. Advantageous embodiments of the invention will also become apparent from the features of the following description and the figures.

[0026] To better understand the principles of the present invention, embodiments of the invention are explained in more detail below with reference to the figures. The same reference numerals are used in the figures for identical or equivalently acting elements and are not necessarily described again for each figure. It is understood that the invention is not limited to the embodiments shown and that the described features can also be combined or modified without departing from the scope of protection of the invention as defined in the appended claims. Figure overview

[0027] They show, in a schematic, sketch-like representation: Fig. 1 a cut-away side view through a display device; Fig. 2 a detailed view of a display device; Fig. 3 in a top view an embodiment of a reflector element according to the invention with an irregular division between the cavities; Fig. 4 in a top view an embodiment of a reflector element according to the invention with an irregular division through the cavities; Fig. 5 in a top view a second embodiment of a reflector element according to the invention with an irregular division through the cavities; Fig. 6 an embodiment of a modular reflector with flat walls of the cavities; Fig. 7 an embodiment of a modular reflector with rounded walls of the cavities; Fig. 8 in a side view an embodiment of the adjacent reflector elements with overlapping walls; Fig. 9 in a side view an embodiment of the adjacent reflector elements with a joint; Fig. 10 possible ways of attaching the modules to a support element; and Fig. 11 a means of transport which uses a display device according to the invention. Character description

[0028] Fig. Figure 1 schematically shows a cutaway side view through a display device 1. The display device 1 has a display panel 2, which is bonded to a cover glass 4. The cover glass 4 encloses a housing 8 of the display device 1 from the surroundings. A backlight 3 for the display panel 2 is arranged in a further housing 7. The housing 7 serves as a support element 70 for the backlight 3. The backlight 3 has a reflector 30 with a plurality of cavities 31. A light source 32, typically a side-emitting LED, is arranged in each of the cavities 31. Optional additional support elements 33 prevent breakage of the display panel 2 or the cover glass 4, for example, during operation.The cover glass is avoided, particularly in very large displays that extend over the entire driver and passenger area. For example, the support elements can be made of polycarbonate or polymethyl methacrylate. In the illustrated example, an optical plate 5 with a stack of films 6 arranged on it is located between the backlight 3 and the display panel 2. The films of the optical film stack 6 have the task of scattering, collecting, or directing the light from the reflector 30 so that the solid angle requirements of the backlight 3 are met. Typical films for light alignment are brightness enhancement films (BEF) and light control films (LCF). The optical plate 5 is a transparent plate that ensures the optical distance between the optical film stack 6 and the light sources 32.The cover glass 4, the optical plate 5, and the housing 7 of the backlight 3 are connected to one another by suitable connecting elements 9, e.g., adhesives. The reflector 30 consists of several modules 300, 300', each comprising a circuit board 35, 35' with the light sources 32 arranged on it, as well as a reflector element 304, 304'.

[0029] Fig. Figure 2 schematically shows a detailed view of a display device 1. Visible are the cover glass 4 with the display panel 2, the optical plate 5 with the film stack 6 arranged on it, and the backlight 3 with the housing 7, the circuit board 35 with the light sources 32 arranged on it, and the reflector 30. The housing 7 serves as a support element 70 for the module 300, the module 300 being composed of the circuit board 35 and the light sources 32 arranged on it, as well as the reflector element 304 arranged above them. The light sources 32 are side-emitting LEDs that preferably emit light L in all directions towards the walls 34 of the cavities 31. The reflective walls 34 of the cavities 31 of the reflector 30 are rounded and orient the light L emerging from the light sources 32 towards the display panel 2. As shown in Figure 2, the light sources 32 are laterally emitting LEDs that preferably emit light L in all directions towards the walls 34 of the cavities 31. Fig. As shown in Figure 6 a), the walls 34 of the cavities 31 can also be designed to be planar. The transparent support elements 33 allow the light L to pass through, except for one in Fig. The refraction 2 (not shown) passes unimpeded towards the display panel 2. In an alternative embodiment (not shown), no support elements 33 are provided. Suitable materials for the support elements 33 are, for example, polycarbonate or polymethyl methacrylate. Depending on the application and size of the display device 1, the height of the reflector 30 and the dimensions of the individual cavities 31 can vary, which can result in a shallower height for the reflector 30 and thus a lower overall height for the display device 1.

[0030] Fig. Figure 3 shows a top view of an embodiment of a reflector element 304, 304', 304" according to the invention, with an irregular division 301, 301' in the overlap area between the cavities 31. The individual reflector elements 304, 304', 304" form the reflector 30, with the irregular division 301, 301' running between the cavities 31 of the adjacent reflector elements 304, 304', 304". To prevent the viewer from seeing a dark line in the area of ​​the division 301, 301' of the individual reflector elements 304, 304', 304", the division 301, 301' runs irregularly, i.e., not in a regular pattern, between the individual cavities. Each of the reflector elements 304, 304', 304" has a plurality of cavities 31, the cavities 31 being arranged in a matrix. The four walls 34 of the individual cavities 31 each form a quadrilateral with areas of equal size.The walls 34 of the cavities 31 of the reflector element 304 are preferably rounded, even though the rounding is hardly perceptible to the naked eye in this view. Each of the cavities 31 is thus completely closed. When the individual reflector elements 304, 304', 304" are assembled together, the individual cavities 31 form a closed matrix in the area of ​​the irregular division 301, 301', so that no gap is created between the cavities 31. The adjacent and interconnected reflector elements 304, 304', 304" complement each other in the area of ​​the irregular division 301, 301' when assembled. In an alternative embodiment not shown, an individually shaped division can also be made between the individual cavities 31 of the adjacent reflector elements 304, 304', 304". The above in . Fig. The support elements 33 shown in Figure 1 are not arranged in the area of ​​the irregular division 301, 301', but in the interior area of ​​a respective reflector element 304, 304', 304".

[0031] Fig. Figure 4 schematically shows in a top view an embodiment of a reflector element 304, 304' according to the invention with an irregular division 301 by the cavities 31. Here, the walls 34 of a cavity 31 are separated in the overlap area. Fig. 4 Two interconnected reflector elements 304, 304' of the reflector 30. The reflector 30 can also consist of more than two reflector elements 304, 304'. Each of the reflector elements 304, 304' has a plurality of cavities 31, the cavities 31 being arranged in a matrix. The four walls 34 of the individual cavities 31 each form a quadrilateral with equally sized areas that completely enclose the light sources 32 arranged in the cavities 31, which are not shown here. The walls 34 of the cavities 31 of the reflector element 304, 304' are preferably rounded, although the rounding is hardly perceptible to the naked eye in this view. In the overlap area between the two interconnected reflector elements 304, 304', individual cavities 31 are not completely closed around the circumference due to the irregular division 301.The irregular division 301 is achieved by dividing the walls 34 of the individual cavities 31 in the overlap area. In this case, a portion of a wall 34 is missing, or a wall 34 is completely missing, or several walls 34 are partially and / or completely missing in a cavity 31 in the overlap area between the adjacent reflector elements 304, 304'. When the two reflector elements 304, 304' are mounted, the walls 31 of the divided cavities 31 of the first reflector element 304 and the second reflector element 304' complement each other and form completely sealed walls 34 of the individual cavities 31 in the overlap area of ​​the irregular division 301. The walls of the cavity are formed by a portion of the walls 34 of the first reflector element 304 and by a portion of the walls 34 of the second reflector element 304'.Here, the walls of the first reflector element 304 are joined with the walls of the second reflector element 304'. The irregular division 301 of the first reflector element 304 forms the missing, closing part of the wall 34 for the adjacent second reflector element 304'. The individual adjacent cavities 31 of the first reflector element 304 and the adjacent second reflector element 304' are thus completely sealed all around, so that no gap is formed between the individual cavities. The two adjacent and connected reflector elements 304, 304' complement each other in the overlap area of ​​the irregular division 301 in the assembled state.

[0032] Fig. Figure 5 schematically shows a second embodiment of a reflector element 304, 304' according to the invention in a top view, with an irregular division 301 by the cavities 31. This embodiment of the irregular division 31 of the reflector 30 largely corresponds to the embodiment shown in Figure 5. Fig. 4. However, the irregular division 301 by the individual cavities 31 exhibits symmetry in the overlap area, whereas the in Fig. The embodiment described in section 4 has no symmetry in the overlap area of ​​the division 301.

[0033] Fig. Figure 6 schematically shows an embodiment of a modular reflector 30 with flat walls 34 of the cavities 31. This shows Fig. 6a) an oblique view of two interconnected modules 300, 300' of the reflector 30, Fig. 6b) a top view. Each of the modules 300, 300' has a circuit board 35, 35' with light sources 32 arranged on it, as well as a reflector element 304, 304' with cavities 31. The two modules 300, 300' and the reflector elements 304, 304' of the modules 300, 300' are arranged to overlap, so that the reflector elements 304, 304' complement each other. The reflector elements 304, 304' are in Fig. 6 designed such that in the overlap area there is an irregular division between the individual cavities 31, as in Fig. Figure 3 shows the cavities 31 of the reflector elements 304, 304'. These cavities are completely closed around the overlap area 400. The walls 34 of the cavities 31 of the reflector elements 304 are rounded.

[0034] Fig. Figure 7 schematically shows an embodiment of a modular reflector 30 with rounded walls 34 of the cavities 31. An oblique view of two modules 300, 300' of the reflector 30 is shown. This embodiment of the modular reflector largely corresponds to the embodiment shown in Figure 7. Fig. 6. However, the walls 34 of the cavities 31 of the reflector elements 304, 304' are rounded. The reflector elements 304, 304' have an irregular division 301 between the cavities 31 of the reflector elements 304, 304' in the overlap area.

[0035] Fig. Figure 8 shows a side view of an embodiment of adjacent reflector elements 304, 304' with overlapping walls 34. It can be seen how, in the assembled state, one reflector element 304 forms a fourth wall 34 for the second reflector element 304', thus completely closing the cavities 31 in the overlap area 400, in the region of the irregular division 301 by the cavities 31. The individual adjacent cavities 31 are therefore completely sealed around their circumference and spatially separated from one another, so that no gap is formed in the region of the irregular division 301. In the preferred embodiment, the walls 34 of the cavities 31 of the reflector elements 304, 304' are rounded.

[0036] Fig. Figure 9 shows a side view of an embodiment of adjacent reflector elements 304, 304' with a joint. The joint is formed by the irregular division 301 between the cavities of the adjacent reflector elements 304, 304'. In the preferred embodiment, the walls 34 of the cavities 31 of the reflector elements 304, 304' are rounded.

[0037] Fig. Figure 10 shows possible fastenings of the modules 300, 300' to a support element 70. Fig. 10a) The module 300, 300' is riveted to the support element 70. For this purpose, the reflector element 304, 304', 304" has a rivet 305 which extends through a recess 36 in the circuit board 35, 35' and a recess 71 in the support element 70. The rivet 305 preferably consists of the same material as the reflector element 304, 304', 304", so that it can be easily hot-riveted. Fig. 10b) The module 300 is screwed to the support element 70. For this purpose, a screw 306 is screwed through a recess 71 of the support element 70 and a recess 36 of the circuit board 35, 35' into the reflector element 304, 304', 304". Fig. Figure 10c) shows an embodiment in which the reflector element 304, 304', 304" is riveted to the support element 70 and the circuit board 35, 35' is additionally screwed to the support element 70. Fig. 10d) The module 300, 300' is bonded to the carrier element 70. For this purpose, an adhesive tape 307 is used, which creates an adhesive bond between the reflector element 304, 304', 304" and the carrier element 70. The adhesive tape 307 is arranged in a recess 36 of the circuit board 35.

[0038] Fig.Figure 11 schematically shows a means of transport 20 that uses a display device 1 according to the invention. In this example, the means of transport 20 is a motor vehicle. The motor vehicle has a display device 1 according to the invention, which is arranged in an instrument panel. Data about the vehicle's environment can be acquired by means of sensors 21. The sensors 21 can, in particular, include sensors for environmental detection, e.g., ultrasonic sensors, laser scanners, radar sensors, lidar sensors, or cameras. The information acquired by the sensors 21 can be used to generate content to be displayed on the display device 1. Further components of the motor vehicle in this example are a navigation system 22, which can provide position information, and a data transmission unit 23. The data transmission unit 23 can, for example,A connection to a backend is established, for example, to obtain updated software for vehicle components. A memory 24 is available for data storage. Data exchange between the various vehicle components takes place via a network 25.

[0039] Overall, the exemplary embodiment shows how the invention can provide a simple way to design an improved display device with backlighting and a means of transport with such a display device, so that in the overlap area between the interconnected modules the walls of the reflector cavities are completely closed all around and no optical loss with a local reduction in brightness occurs and no dark line is visible to the viewer in the overlap area of ​​the individual reflector elements between the adjacent modules. Reference symbol list 1 Display device 2 Display panels 3 Backlight 30 Reflector 300, 300' module 301, 301' irregular division 304, 304', 304" reflector element 305 rivets 306 screw 307 Adhesive tape 31 Cavity 32 Light source 33 Support element 34 Wall 35, 35' circuit board 36 recess 4 Cover glass 5 Optical plate 6 stacks of foil 7 Backlight housing 70 support element 71 recess 8 Housing of the display device 9 Connecting element 20 means of transport 21 Sensors 22 Navigation system 23 Data transmission unit 24 storage 25 Network L light QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2022 205 566 A1

[0004] US 2018 / 372300 A1

[0005]

Claims

[1] Display device (1) with a display panel (2) and a backlight (3) for the display panel (2), wherein the backlight (3) comprises a reflector (30) consisting of a plurality of modules (300, 300') with a plurality of reflectively designed cavities (31), wherein each of the individual cavities (31) has a surrounding wall (34), wherein a light source (32) is arranged in each of the cavities (31), and wherein each module (300,300') has a reflector element (304, 304', 304"), characterized by , that a reflector element (304, 304', 304") of a first module (300, 300') has an irregular division (301, 301') to an adjacent reflector element (304, 304', 304") of a second module (300, 300'). [2] Display device (1) according to claim 1, characterized by, that the irregular division (301, 301') between cavities (31) of the reflector elements (304, 304', 304") of the adjacent modules (300, 300') runs. [3] Display device (1) according to one of the preceding claims 1 or 2, characterized by , that the irregular division (301, 301') runs through cavities (31) of the reflector elements (304, 304', 304") of the adjacent modules (300, 300'). [4] Display device according to any one of the preceding claims 1 to 3, characterized by , that the circumferential walls (34) of the individual cavities (31) in the area of ​​the irregular division (301, 301') are formed by walls (34) of the cavities (31) of the reflector element (304, 304', 304") of the first module (300, 300') and by adjacent walls (34) of the cavities (31) of the reflector element (304, 304', 304") of the second module (300, 300'). [5] Display device (1) according to any one of the preceding claims 1 to 4, characterized by, that walls (34) of the reflector elements (304, 304', 304") of the adjacent modules (300, 300') are designed to overlap in the area of ​​the irregular division (301, 301'). [6] Display device (1) according to any one of the preceding claims 1 to 5, characterized by , that reflector elements (304, 304', 304") of the adjacent modules (300, 300') have a joint in the area of ​​the irregular division (301, 301') between the walls (34) of the cavities (31). [7] Display device (1) according to any one of the preceding claims 1 to 6, characterized by that the modules (300) are snapped, screwed, glued or riveted to a support element (70). [8] Display device (1) according to any one of the preceding claims 1 to 7, characterized by , that the walls (34) of the cavities (31) are rounded and the cavities (31) are designed to reflect the light (L) emitted by the light sources (32) in the direction of the display panel (2). [9] Display device (1) according to any one of the preceding claims 1 to 8, characterized by , that the walls (34) of the cavities (31) are planar and the cavities (31) are designed to reflect the light (L) emitted by the light sources (32) in the direction of the display panel (2). [10] Means of transport (20) with a display device (1) according to any one of the preceding claims 1 to 9.

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