Display device and method for operating a display device

Abstract

A display device (10) comprises a first display element (100) having an edge region (102) and an inner region (104), the inner region (104) being surrounded by the edge region (102), and the first display element (100) having a multiplicity of first picture elements (101). The display device (10) also comprises a second display element (110), which has a transparent support (116) and a multiplicity of second picture elements (111), each embodied as LEDs (112). The second display element (110) is arranged above the first display element (100) and overlaps the first display element (100) at least in the edge region (102).

Description

[0001] DISPLAY DEVICE AND METHOD FOR OPERATING A DISPLAY DEVICE

[0002] DESCRIPTION

[0003] In general, concepts are being sought to improve display devices, for example for use in the automotive or consumer electronics sectors.

[0004] The present invention is based on the object of providing an improved display device.

[0005] According to embodiments, the problem is solved by the subject matter of the independent patent claims. Further developments are defined in the dependent patent claims.

[0006] According to embodiments, a display device comprises a first display element having an edge region and an inner region, wherein the inner region is enclosed by the edge region, and the first display element has a plurality of first picture elements. The display device further comprises a second display element which has a transparent carrier and a plurality of second picture elements, each of which is designed as LEDs. The second display element is arranged above the first display element and overlaps with the first display element at least in the edge region.

[0007] For example, a smallest pitch between adjacent first picture elements may be smaller than the smallest pitch between adjacent second picture elements.

[0008] According to embodiments, the transparent carrier can be a film. For example, the transparent carrier can be homogeneously equipped with LEDs. According to further embodiments, the transparent carrier can also be non-homogeneously equipped with LEDs.

[0009] The display device may further comprise a transparent cover plate. For example, the transparent cover plate may be arranged between the first and second display elements. A lateral size of the transparent cover plate may correspond to the lateral extent of the display device.

[0010] According to further embodiments, the transparent cover plate can be arranged above the second display element. A lateral size of the transparent cover plate can correspond to the lateral extent of the display device.

[0011] For example, a resolution of the first display element in the edge area can be reduced with increasing distance from the inner area.

[0012] According to further embodiments, a second color space of the second display element can be reduced in the edge region with decreasing distance from the inner region.

[0013] The display device may further comprise a shadow mask with spatially varying light transmittance between the first display element and the second display element. The shadow mask may extend from the edge region of the first display element to a region of the second display element that does not overlap with the first display element. The light transmittance may increase with increasing distance from the edge region of the first display element. The second display element may further comprise a sensor.

[0014] For example, the sensor can be a touch sensor.

[0015] The display device may further comprise a first driver for driving the first display element and a second driver for driving the second display element.

[0016] For example, the second display element may cover the inner area.

[0017] According to further embodiments, it is possible that the inner region is not covered by the second display element.

[0018] For example, second image elements of the second display element can be grouped into segments. Symbols can be displayed in this way.

[0019] A method of operating a display device as described above comprises operating the first picture elements and the second picture elements, wherein the second display element is operated such that the second picture elements overlapping with the inner region do not provide display information.

[0020] For example, the second display element can be operated such that the second picture elements that overlap with the edge region provide display information and the first display element can be operated such that the first picture elements in the edge region provide display information.

[0021] According to embodiments, the first display element can be operated such that the first image elements in the edge region have a resolution that decreases with increasing distance from the inner region. According to embodiments, the second display element can be operated such that a second color space of the second display element decreases with decreasing distance from the inner region.

[0022] The accompanying drawings are intended to provide an understanding of embodiments of the invention. The drawings illustrate embodiments and, together with the description, serve to explain the same. Further embodiments and many of the intended advantages will be apparent from the following detailed description. The elements and structures shown in the drawings are not necessarily to scale. Like reference numerals refer to like or corresponding elements and structures.

[0023] Fig. 1A shows a plan view of a part of a display device according to embodiments.

[0024] Fig. 1B shows a vertical cross-sectional view of a display device according to embodiments.

[0025] Fig. 1C shows a vertical cross-sectional view of a display device according to further embodiments.

[0026] Fig. 2A shows a plan view of a part of an example of a second display element.

[0027] Fig. 2B is a vertical cross-sectional view of an example of a second display element.

[0028] Fig. 2C shows a plan view of a portion of an example of a first display element. Fig. 3A shows a vertical cross-sectional view of a display device according to further embodiments.

[0029] Fig. 3B shows a vertical cross-sectional view of a display device according to further embodiments.

[0030] Fig. 4A shows a vertical cross-sectional view of a display device according to further embodiments.

[0031] Fig. 4B illustrates a part of the first and second display elements in the edge region.

[0032] Fig. 4C illustrates examples of a color space.

[0033] Fig. 5 shows a vertical cross-sectional view of a display device according to further embodiments.

[0034] Fig. 6A shows a vertical cross-sectional view of a display device according to further embodiments.

[0035] Fig. 6B shows a vertical cross-sectional view of a display device according to further embodiments.

[0036] Fig. 6C shows a vertical cross-sectional view of a display device according to further embodiments.

[0037] Fig. 6D shows a vertical cross-sectional view of a display device according to further embodiments.

[0038] In the following detailed description, reference is made to the accompanying drawings, which form a part of the disclosure, and in which specific embodiments are shown for purposes of illustration. In this context, directional terminology such as "top," "bottom," "front," "back," "over," "on," "in front of," "behind," "fore," "rear," etc., refers to the orientation of the figures just described. Since the components of the embodiments can be positioned in different orientations, the directional terminology is for the purpose of explanation only and is in no way limiting.

[0039] The description of the embodiments is not limiting, as other embodiments exist and structural or logical changes may be made without departing from the scope defined by the claims. In particular, elements of the embodiments described below may be combined with elements of other described embodiments, unless the context indicates otherwise.

[0040] The term "vertical," as used in this description, is intended to describe an orientation that is substantially perpendicular to the first surface of a substrate or semiconductor body. The vertical direction may, for example, correspond to a growth direction during layer growth.

[0041] The terms "lateral" and "horizontal," as used in this description, are intended to describe an orientation or alignment that is substantially parallel to a first surface of a substrate or semiconductor body. This can be, for example, the surface of a wafer or a chip (die).

[0042] The horizontal direction can, for example, lie in a plane perpendicular to a growth direction during the growth of layers. Fig. 1A shows a plan view of part of a display device 10. The display device 10 comprises a first display element 100 with an edge region 102 and an inner region 104. The inner region 104 is enclosed by the edge region 102. The first display element 100 comprises a plurality of first display elements (not shown in Fig. 1A). The second display element 110 has a transparent carrier (not shown in Fig. 1A) and a plurality of second picture elements 111, each of which is designed as an LED 112. The second display element 110 is arranged above the first display element 100 and overlaps with the first display element 100 at least in the edge region 102.

[0043] Accordingly, the lateral size of the display device 10 is increased compared to the lateral size of the first display element 100. For example, the lateral size of the display device 10 is increased compared to the lateral size of the first display element 100 by the lateral maximum extent of the second display element 110. For example, the second display element 110 is arranged between a viewer of the display device 10 and the first display element 100. Because the carrier of the second display element 110 is transparent, the representations of the first and second display elements 100, 110 are superimposed on one another. For example, an edge 103 of the first display element 100 can be covered by the second display element 110.

[0044] The shape of the second display element 110 does not necessarily have to correspond to the shape of the first display element 100. For example, the first display element 100 can be rectangular, and the second display element can have any shape. In this way, the display device 10 can be realized with any shape.

[0045] Fig. 1B shows a cross-sectional view of an example of a display device 10. As can be seen, the second display element 110 can be arranged such that it is arranged over the edge region 102 of the first display element 100, while an inner region 104 of the first display element 100 is not covered by the second display element 110. A part of the second display element 110 can protrude outwardly from the edge 103 of the first display element. The second display element 110 can be attached to the first display element 100 with, for example, a transparent adhesive.

[0046] According to embodiments shown in Fig. 1C, the second display element 110 can also completely cover the first display element 100. In particular, according to these embodiments, the inner region 104 of the first display element 100 can also be covered with the second display element 110.

[0047] By means of the described arrangement, for example, the edge 103 of the first display element 100 can be covered with the second display element 110. As a result, the edge 103 and the outer region 105 can be used as an extension of the first display element 100. For example, depending on the density of the second image elements 111, the edge 103 c

[0048] Fig. 2A shows a plan view of a part of the second display element 110. The individual second picture elements 111 of the second display element 110 are embodied as LEDs 112. For example, the second picture elements 111 can comprise LEDs 112 that emit light in the three primary colors, i.e. red, green, and blue. For example, this can be achieved by a suitable selection of the material system underlying the respective LEDs. According to further embodiments, however, this can also be achieved by selecting suitable converter materials for converting the radiation emitted by the LEDs.

[0049] The LEDs 112 can, for example, be arranged in rows and columns. For example, a smallest pitch d2 between adjacent second pixels 111 or LEDs 112 can be approximately 100 μm to 10 mm, depending on the application. The term "pitch" in this context can correspond to the sum of the distance between adjacent pixels and the lateral dimensions of the pixels. The lateral dimensions of the pixels 111 can be approximately 50 μm x 50 μm to 200 μm x 200 μm. The pixels 111 do not have to be square. Furthermore, the pitch in a first horizontal direction can be different from the pitch in a direction perpendicular thereto.

[0050] The area coverage of the second display element 110 does not necessarily have to be homogeneous. For example, the second display element 110 can have a first region 118 and a second region 119 and optionally further regions in which the area coverage is different in each case. For example, the grid spacing between adjacent second picture elements 111 or LEDs 112 can be different in each case. According to further embodiments, it is also possible that, for example, no second picture elements 111 or LEDs 112 are arranged in the second region 119. According to embodiments, it is also possible for the individual LEDs 112 to be arranged over the entire second display element 110 with the same grid spacing and for certain LEDs 112 not to be operated. For example, only some of the LEDs 112 in the second region 119 can be operated. Furthermore, a plurality of LEDs 112 can be grouped into segments.For example, a first region 118 with a denser coverage of second pixels 111 can be arranged in an area that overlaps with the edge 103 of the first display element 100. In this way, it is possible that the transition from the edge region 102 across the edge 103 into the outer region 105 is visually perceived only to a limited extent.

[0051] The individual LEDs 112 can be controlled by conductor tracks 114. For example, a network (mesh) or grid of thin wires, such as copper, can be provided to represent the conductor tracks. With appropriately dimensioned conductor tracks, the second display element 110 can be transparent.

[0052] Fig. 2B shows a vertical cross-sectional view of the second display element 110. The leads 114 and the individual LEDs 112 can be arranged above a transparent carrier 116. The transparent carrier 116 can, for example, have a thickness of less than 200 pm, for example less than 150 pm, for example approximately 100 pm. The transparent carrier 116 can, for example, be implemented as a flexible film. A material of the transparent carrier 116 can, for example, be PET (polyethylene terephthalate). It is self-evident that this cross-sectional view is only to be seen as an example. In general, the second display element 110 can comprise any arrangement of LEDs 112 in, above or below a transparent carrier 116 in combination with suitable leads.

[0053] With a low thickness of the transparent carrier 116, it is possible that the superimposed display of the first display element 100 and the second display element 110 may be perceived by the observer as if it came from a single display element. In particular, the emission planes of the first display element 100 and the second display element 110 may be spatially very close together. In this way, the visibility of a hard transition between the display by the first display element 100 and the second display element 110 can be reduced.

[0054] Fig. 2C shows a plan view of the first display element 100. The first display element 100 comprises a plurality of first picture elements 101, which can be arranged in rows and columns at a first pitch. A smallest first pitch d1 can be smaller than d2. Accordingly, the first display element 100 can, for example, have a higher spatial resolution than the second display element 110. The first picture elements 101 can also be implemented as LEDs. According to further embodiments, the first picture elements can be implemented as OLEDs (organic light-emitting diodes). According to further embodiments, the second display element 100 can also be implemented as an LCD (liquid crystal) display. The individual first picture elements 101 can each be controlled via first lead elements 108.If the first display element 100 is implemented as an LCD display, a first color space (gamut) of the first display element 100 can, for example, be smaller than a second color space of the second display element 110.

[0055] As shown in Fig. 3A, the display device 10 can, according to further embodiments, have a transparent cover plate 120. For example, a material of the transparent cover plate can be glass or PMMA (polymethyl methacrylate). For example, the cover plate can also contain optically manipulative structures (e.g. privacy and / or light enhancement) in order to be effective over the entire surface of the display device 10. For example, the transparent cover plate can be arranged above the second display element 110 on a side facing away from the first display element 100 and can be fastened to the second display element 110, for example with adhesive. In the embodiment shown in Fig. 3A, for example, an emission plane of the second display element 110 can be arranged in spatial proximity to the emission plane of the first display element 100.

[0056] According to further embodiments, which are illustrated in Fig. 3B, the transparent cover plate 120 can also be arranged between the first display element 100 and the second display element 110. The transparent cover plate 120 can be attached to the first display element 100 and the second display element 110 with adhesive.

[0057] According to embodiments shown in Figs. 3A and 3B, a lateral size of the cover plate 120 can correspond to the maximum lateral extent of the display device 10. For example, the cover plate 120 can be used instead of a display cover over the first display element 100. In general, the cover plate 120 can serve as a stable holder for the first and second display elements 100, 110. For example, the cover plate 120 can be transparent, translucent, or blackened, at least in regions. For example, regions of the cover plate 120 in the outer region 105 can be translucent, tinted, or provided with a passe-partout.

[0058] Fig. 4A shows a vertical cross-sectional view of a display device 10 according to further embodiments. According to embodiments, a smallest pitch d1 between adjacent first pixels 101 can be smaller than the smallest pitch d2 between adjacent second pixels 111. Conversely, a first color space of the first display element 100 can be smaller than a second color space of the second display element 110. Accordingly, an adjustment of the resolution between the two display elements can be carried out in the edge region 102. Furthermore, an adjustment of the color space between the two display elements can be carried out in the edge region 102. Accordingly, the colors of the first and second display elements 100, 110 can be matched to one another such that the viewer perceives no difference in color.

[0059] The display device 10 shown in Fig. 4A can, for example, have a first driver 130 for controlling the first picture elements 101 and a second driver 135 for controlling the second picture elements 111. According to further embodiments, however, the functionalities of the first and the second driver 130, 135 can also be combined in a common driver. However, by using two separate drivers 130, 135, the redundancy can be increased so that if one driver fails, at least the functionality of one display element is retained. It is even possible to use more than one driver for the second display element so that different areas / segments are independent of one another / redundant.

[0060] For example, the first picture elements 101 and the second picture elements 111 can be controlled such that in the inner region 104 only the first picture elements 101 provide display information. Furthermore, the first picture elements 101 and the second picture elements 111 can be controlled such that in an outer region 105 only the second picture elements 111 provide display information. The outer region 105 can, for example, correspond to the region of the second display element 110 that does not overlap with the first display element 100 or only overlaps with the edge 103. For example, in the edge region 102 a resolution of the first display element 100 can be reduced with increasing distance from the inner region 104. This is illustrated in more detail in Fig. 4B. Fig. 4B shows a plan view of the second display element 110 with a smallest second grid dimension d2 between adjacent second picture elements 111. Fig.4B further shows a plan view of the first display element 100 with a smallest first pitch dl between adjacent first pixels 101. As indicated in Fig. 4B, the distance between adjacent first pixels 101 in the edge region increases with increasing distance from the inner region 104. This can be achieved, for example, by a corresponding physical arrangement of the first pixels 101. According to further embodiments, however, this can also be achieved by corresponding control, for example with the first driver 130. For example, first pixels 101 in the edge region 102 can be addressed with increasingly greater distances.

[0061] For example, in the edge region 102, a second color space of the second display element 110 can be reduced with decreasing distance from the inner region 104. Fig. 4C shows a schematic representation of the first color space 107 (solid line) and the second color space 117 (dashed line). The second color space can be gradually reduced with decreasing distance from the inner region 104. This can be achieved by appropriately controlling the second display element 110.

[0062] In this way, a smooth transition from the inner region 104, in which only display information from the first display element 100 is shown, to the outer region 105, in which only display information from the second display element 110 is shown, can be realized.

[0063] Fig. 5 shows a vertical cross-sectional view of a display device 10 according to further embodiments. As shown in Fig. 5, the display device 10 can further comprise a shadow mask 123 between the first and the second display element 100, 110. According to further embodiments, the shadow mask 123 can also be arranged adjacent to the first display element 100 in the same plane in the outer region 105 of the first display element. The shadow mask 123 can have a spatially varying light transmittance. The shadow mask 123 can, for example, extend at least from the edge region 102 or from the edge 103 of the first display element 100 to a region of the second display element 110 that does not overlap with the first display element 100. For example, the shadow mask 123 can extend to the edge 113 of the second display element 110.The light transmittance of the shadow mask 123 can, for example, increase with increasing distance from the edge region 102 of the first display element 100. This means that in the edge region 102, the shadow mask 123 can be slightly or not at all transparent. In a region near the edge 113 of the second display element 110, the transparency can be high or complete. For example, the non-transparent or slightly transparent part of the shadow mask 123 can be black, translucent, or structured.

[0064] For example, the shadow mask 123 can be designed as a gradient film with varying transparency or a film with a gradual transition. According to further embodiments, the shadow mask 123 can be designed as a film or carrier with varying metal coating. The display device 10 shown in Fig. 5 can further comprise a transparent cover plate 120, for example, between the shadow mask 123 and the second display element 110. According to further embodiments, the transparent cover plate 120 can also be arranged at a different location or be omitted.

[0065] Figures 6A to 6D show vertical cross-sectional views of display devices 10 in which the second display element 110 is equipped with additional functionality.

[0066] As shown in Fig. 6A, the second display element 110 can further have one or more touch sensors 115. For example, the touch sensor 115 can be arranged above a surface of the transparent carrier 116 or integrated into the transparent carrier 116. For example, the touch sensor 115 can be capacitive. The touch sensors 115 can be connected to a processing device 136. In this way, the display device 10 can act as a user interface. For example, elements can be displayed on the first display element 100 and selected by actuating the touch sensors 115, which are components of the second display element 110.

[0067] According to embodiments shown in Fig. 6B, the second display element 110 can further comprise a light control film 124. The light control film 124 can, for example, be designed as a light enhancement layer 124. Such light enhancement layers 124 can, for example, direct the light primarily in the direction of the viewer, wherein the brightness is increased in the direction of the viewer. According to further embodiments, the light control film 124 can be designed as a privacy film, which can increase the user's privacy by, for example, the information shown by the display device 10 being visible only when viewed perpendicularly or from another predetermined angular range.

[0068] According to embodiments illustrated in Fig. 6C, the second display element 110 may include additional sensors 122. For example, the additional sensor 122 may be an ambient light sensor capable of detecting the brightness of the environment. The sensor 122 may be connected to a processing device 136. For example, the processed brightness signal may be used to control the brightness of the display device 10.

[0069] According to embodiments illustrated in Fig. 6D, the second display element 110 may further comprise a diffuser 121. The diffuser 121 may, for example, be arranged over certain areas of the surface of the second display element 110, for example over the edge 103 and / or the edge region 102. For example, the presence of the diffuser 121 may cause the edge 103 of the first display element 100 to be less perceptible from the outside.

[0070] Further embodiments relate to a method for operating a display device 10 in which the second display element 110 covers the inner region 104. The method comprises operating the first pixels 101 and the second pixels 111. The second display element 110 is operated such that the second pixels 111 that overlap with the inner region 104 do not provide any display information. Accordingly, only display information provided by the first display element 100 is shown in the inner region 104. For example, the second display element 110 can be operated such that the second pixels 111 that overlap with the edge region 102 provide display information. Furthermore, the first display element can be operated such that the first pixels 101 in the edge region 102 provide display information.In this way, in the edge region 102, the display information of the first display element 100 is superimposed with the display information of the second display element 110.

[0071] For example, the first display element 100 can be operated such that the first pixels 101 in the edge region have a resolution that decreases with increasing distance from the inner region 104. For example, this can be achieved by not controlling all pixels 101 in the edge region 102. In this way, a gradual adaptation to the resolution of the second display element 110 can be achieved.

[0072] According to embodiments, the second display element 110 can be operated such that a second color space 117 of the second display element 110 becomes smaller with decreasing distance from the inner region 104. In this way, a gradual adaptation to the first color space 107 of the first display element 100 can take place.

[0073] In the method, for example, the first display element 100 can be controlled by a first driver 130, and the second display element 110 is controlled by a second driver 135, as is also shown in Fig. 4A, for example. According to further embodiments, the first and second display elements 100, 110 can also be controlled by a common driver. As described above, the display device 10 can be used to combine properties of the first display element 100, which for example has a comparatively high resolution, with properties of the second display element 110, which has a transparent carrier. For example, the transparent carrier can be designed as a film. The second color space 117 of the second display element 110 can be larger than the first color space 107 of the first display element 100. In this way, the luminance and efficiency of the display device can be increased.Furthermore, the overall depth of the display device 10 can be reduced. The display area can be expanded cost-effectively by using the second display element 110.

[0074] The display device 10 can be used, for example, for general displays, consumer electronics and displays in the automotive sector, in particular for an electronic dashboard display.

[0075] Although specific embodiments have been illustrated and described herein, those skilled in the art will recognize that the specific embodiments shown and described may be replaced by a variety of alternative and / or equivalent designs without departing from the scope of the invention. This application is intended to cover any adaptations or variations of the specific embodiments discussed herein. Therefore, the invention is limited only by the claims and their equivalents. LIST OF REFERENCE SIGNS

[0076] Display device first display element first picture element edge area edge inner area outer area first color space first supply element second display element second picture element LED

[0077] Edge of the second display element conductor track

[0078] Touch sensor transparent carrier second color space first area second area transparent cover plate diffuser sensor

[0079] Shadow mask Light control film First driver Second driver Processing device

Claims

CLAIMS 1. Display device (10), comprising a first display element (100) with an edge region (102) and an inner region (104), wherein the inner region (104) is enclosed by the edge region (102), and the first display element (100) has a plurality of first picture elements (101), and a second display element (110) which has a transparent carrier (116) and a plurality of second picture elements (111), each of which is designed as LEDs (112), wherein the second display element (110) is arranged above the first display element (100) and overlaps with the first display element (100) at least in the edge region (102).

2. Display device (10) according to claim 1, wherein a smallest pitch between adjacent first pixels (101) is smaller than the smallest pitch between adjacent second pixels (111).

3. Display device (10) according to claim 1 or 2, wherein the transparent carrier (116) is a film.

4. Display device (10) according to one of the preceding Claims, wherein the transparent carrier (116) is homogeneous with LEDs (112).

5. Display device (10) according to one of claims 1 to 3, wherein the transparent carrier (116) is not homogeneously coated with LEDs (112) is equipped.

6. Display device (10) according to one of the preceding claims, further comprising a transparent cover plate (120), wherein the transparent cover plate (120) is arranged between the first and the second display element (100, 110) and a lateral size of the transparent cover plate (120) corresponds to the lateral extent of the display device (10).

7. The display device (10) according to any one of claims 1 to 5, further comprising a transparent cover plate (120), wherein the transparent cover plate (120) is arranged above the second display element (110) and a lateral size of the transparent cover plate (120) corresponds to the lateral extent of the display device (10).

8. Display device (10) according to one of the preceding claims, wherein a resolution of the first display element (100) in the edge region (102) is reduced with increasing distance from the inner region (104).

9. Display device (10) according to one of the preceding claims, wherein a second color space (117) of the second display element (110) in the edge region (102) is reduced with decreasing distance from the inner region (104).

10. Display device (10) according to one of the preceding claims, further comprising a shadow mask (123) with spatially varying light transmittance between the first display element (100) and the second display element (110) or next to the first display element, wherein the shadow mask (123) extends from the edge region (102) of the first display element (100) to a region of the second display element (110) which does not overlap with the first display element (110), and the light transmittance increases with increasing distance from the edge region (102) of the first display element (100).

11. Display device (10) according to one of the preceding claims, wherein the second display element (110) further comprises a sensor (122, 115).

12. Display device (10) according to one of the preceding Claims, wherein the sensor is a touch sensor (115).

13. Display device (10) according to one of the preceding claims, further comprising a first driver (130) for driving the first display element (100) and a second driver (135) for driving the second display element (110).

14. Display device (10) according to one of the preceding claims, wherein the second display element (110) covers the inner region (104).

15. Display device (10) according to one of claims 1 to 13, wherein the inner region (104) is not covered by the second display element (110).

16. Display device (10) according to one of the preceding claims, wherein second image elements 111 of the second display element 110 are grouped into segments.

17. A method for operating a display device (10) according to claim 14, comprising operating the first picture elements (101) and the second picture elements (111), wherein the second display element (110) is operated such that the second picture elements (111) overlapping with the inner region (104) do not provide display information.

18. The method according to claim 17, wherein the second display element (110) is operated such that the second picture elements (111) overlapping with the edge region (102) provide display information and the first display element (100) is operated such that the first picture elements (101) in the edge region (102) provide display information.

19. The method according to claim 18, wherein the first display element (100) is operated such that the first image elements (101) in the edge region (102) have a resolution which decreases with increasing distance from the inner region (104).

20. The method according to claim 18 or 19, wherein the second display element (110) is operated such that a second color space (117) of the second display element (110) becomes smaller with decreasing distance from the inner region (104).

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