Method for calibrating a self-luminous display

Abstract

Method for calibrating a self-luminous display. A method for calibrating and / or compensating a self-luminous display having a plurality of pixels is proposed, the method having the following steps: identifying whether an observer of the self-luminous display is looking at the self-luminous display; displaying a test image, wherein if the observer is not looking at the self-luminous display, at least a part of the pixels of the self-luminous display for displaying the test image are manipulated by means of an electrical signal; determining a comparison value of the pixels of the self-luminous display that are manipulated for displaying the test image; comparing the comparison value with a reference value of the manipulated pixels, wherein if the comparison value deviates from the reference value by a predefined degree, a pixel is identified as being disturbed; if the number of pixels identified as being disturbed exceeds a predefined threshold, it is ascertained that the self-luminous display is disturbed; if it is ascertained that the self-luminous display is disturbed, calibration of the self-luminous display is performed, wherein if the observer is not looking at the self-luminous display, the calibration is performed.

Description

Field of the Invention

[0001] The present invention relates to a method for calibrating and / or compensating a self-luminous display according to the preamble of the independent claim. Furthermore, the subject matter of the present invention is also a device for calibrating and / or compensating a self-luminous display. Background Art

[0002] A method and a device for operating an occupant observation system are known from DE 10 2014 214 352 A1.

[0003] An electronic device having a display, such as an organic light-emitting diode, is known from WO 2018 / 044544 A1. Summary of the Invention

[0004] A method for calibrating and / or compensating a self-luminous display having a plurality of pixels, in particular a self-luminous display having a plurality of pixels for a vehicle, is proposed. The method has the following steps:

[0005] Identifying whether an observer of the self-luminous display is looking at the self-luminous display;

[0006] Displaying a test image, wherein if the observer is not looking at the self-luminous display, at least a part of the pixels of the self-luminous display for displaying the test image is controlled by an electrical signal;

[0007] Determining a comparison value of the pixels of the self-luminous display that are controlled to display the test image;

[0008] Comparing the comparison value with a reference value of the controlled pixels, wherein if the comparison value deviates from the reference value by a pre-given degree, a pixel interference is identified;

[0009] If the number of pixels identified as having interference exceeds a pre-given threshold, it is determined that the self-luminous display has interference;

[0010] If it is determined that the self-luminous display has interference, calibration of the self-luminous display is performed, wherein if the observer is not looking at the self-luminous display, the calibration is performed.

[0011] The self-luminous display can for example be a display that emits light by itself, such as an OLED, a quantum dot or a micro-LED, wherein in particular each pixel emits light by itself and does not require backlighting. Such a display can change its rendering characteristics during operation.

[0012] In this case, interference means that the pixel characteristics or display characteristics deviate from the specified pixel characteristics or display characteristics.

[0013] The advantages of the present invention are as follows: By calibrating and / or compensating a self-luminous display, it is possible to slow down or compensate for undesired changes in display characteristics, such as those caused by aging, changes in brightness, or non-uniformity of the self-luminous display. By testing and correspondingly calibrating and / or compensating individual pixels of the self-luminous display, the individual pixels can be calibrated or compensated such that overuse of the pixels is avoided and thus a significant reduction in service life is avoided, especially where individual pixels do not age faster than other pixels. Aging of the self-luminous display can be detected, for example, in terms of lower brightness and / or color shift. If individual pixels or pixel groups now age faster than other pixels or pixel groups, the human eye can perceive differences in brightness and / or color. Therefore, by calibrating and specifically manipulating the pixels, aging can occur uniformly across all pixels. For example, blue pixels age faster than green pixels. If, for example, the content is shifted, these aging processes can be balanced.

[0014] Advantageously, this calibration can be performed if the observer is not looking at the display or the self-luminous display. By doing so, distraction of the observer can be avoided. The observer can be, for example, the driver of a vehicle. Therefore, by avoiding distraction, safety in road traffic can be improved. In addition, since the driver cannot see the calibration and / or test image, the visual perception and comfort when observing the self-luminous display can be improved or enhanced in particular.

[0015] In an advantageous embodiment, in the step of identifying whether the observer is looking at the self-luminous display, it can be determined with the aid of an observation device whether the observer's eyes can be seen. The observation device can also be referred to as an observation system and / or as an occupant observation system. The observation device can, for example, also be configured to observe a vehicle occupant, such as to detect the head or face or the line of sight direction and / or position of the eyes of the vehicle occupant, especially the driver or co-driver, or also to detect the fatigue state and / or other vital signs of the vehicle occupant. For example, the identity of the vehicle occupant can also be detected. By doing so, it is possible, for example, to simply identify whether the observer is looking at the display area. In an extended embodiment, for this purpose, if the observer's eyes can be seen, the observation device can be used to determine a first axis between at least one eye or both eyes of the observer and the self-luminous display and to determine the observer's line of sight axis, where if the line of sight axis deviates from the first axis by more than approximately 45 degrees, especially more than approximately 90 degrees, especially more than approximately 100 degrees, it is identified that the observer is looking at the self-luminous display. Advantageously, this enables reliable, safe, and / or simple identification of whether the observer is looking at the display area. Therefore, the time point at which a test image can be displayed and / or calibration of the self-luminous display can be performed can be found safely and / or reliably.

[0016] In an exemplary design, in the step of displaying a test image, the pixels that are manipulated to display the test image can be manipulated with a prescribed, in particular maximum, intensity. Thereby, in particular, it can be identified whether the manipulated pixels have to be corrected. Thereby, in particular, the service life of the pixels and thus the service life of the self-luminous display can be extended.

[0017] Advantageously, in the step of displaying a test image, the pixels on a horizontal and / or vertical line can be manipulated with the same intensity. Thereby, it can be checked in a structured and / or reliable manner which pixels of the self-luminous display should be corrected. Thus, in particular, the service life of the self-luminous display can be increased.

[0018] Furthermore, in the step of determining a comparison value for the manipulated pixels of the self-luminous display, the voltage applied to the manipulated pixels can be measured. In an exemplary embodiment, the comparison value and / or the reference value can be a voltage and / or a current. Thereby, in particular, it can be safely and / or reliably and / or simply identified which pixels have an increased load rate and thus should be taken into account, in particular when correcting the self-luminous display, in order to increase the service life of the self-luminous display. In other words, it is possible to simply and / or reliably implement the measurement and / or identification of the load-bearing pixels of the self-luminous display.

[0019] In an extended embodiment, the reference value can be determined by a computing unit based on the electrical signals for manipulating the pixels of the self-luminous display. The reference value can be prescribed once or can be continuously adapted, for example, at specific time intervals and in particular re-calibrated. Thereby, in particular, it can be safely and / or reliably identified which pixels have to be taken into account when correcting the self-luminous display. Thereby, in particular, the service life and the display quality of the self-luminous display can be extended or improved or optimized.

[0020] Advantageously, the comparison value and / or the reference value can be determined on the characteristic curve of the pixels of the self-luminous display. Thereby, in particular, it can be ensured that the comparison value and / or the reference value are determined accurately, whereby in particular it can be safely and / or reliably identified which pixels should be taken into account when correcting the self-luminous display. Thereby, in particular, the service life of the self-luminous display can be extended or the display quality can be improved or optimized.

[0021] In an exemplary design, in the step of performing the correction of the self-luminous display, the image to be displayed on the self-luminous display can be moved by a pre-given number of pixels and / or the image to be displayed can be scaled by a pre-given degree on the self-luminous display. Thereby, in particular, the service life of the self-luminous display can be extended or improved or optimized, since the pixels are manipulated according to their current state, for example the state of their brightness.

[0022] Preferably, the presented image content of individual pixels can be matched so as to equalize the service life of individual pixels with that of other pixels. Thus, the operating duration of individual pixels can also be reduced when the operating duration of other pixels is increased thereby and thus a uniform service life is achieved. To this end, the image content can be moved or scaled so as to achieve a more uniform use of the pixels. If the user is not looking at the display, this scaling or shifting can also be performed imperceptibly.

[0023] Preferably, if it is recognized that the observer is looking at the self-luminous display, the display of the test image and / or the correction of the self-luminous display can be stopped. Thereby, distraction of the observer can be prevented or reduced. The appearance of the display can also be improved because the observer will not notice when the test image is being displayed or when it is being corrected.

[0024] Furthermore, if it is ascertained that the self-luminous display has interference and if the number of pixels recognized as having interference exceeds a pre-given second threshold, the self-luminous display can be switched to the safe mode. The second threshold is in particular a threshold higher than the first threshold. In other words, the number of pixels of the second threshold is greater than the number of pixels of the first threshold. Preferably, the self-luminous display can display a warning symbol and / or be turned off in the safe mode. Thereby it can be ensured that, in the case of excessive interference and thus in particular in the case of an error in the display on the self-luminous display, especially in the case of an error in the display of the image representation on the self-luminous display, no error message is displayed to the observer. Thereby, if the observer is the driver of a vehicle, the safety in road traffic can be increased.

[0025] There is also proposed a device for correcting and / or compensating a self-luminous display having a plurality of pixels, in particular a self-luminous display having a plurality of pixels for a vehicle, wherein the device has a receiving unit for receiving a signal as to whether an observer of the self-luminous display is looking at the self-luminous display. The device has a self-luminous display having a plurality of pixels for displaying a test image, wherein if the observer is not looking at the self-luminous display, at least a part of the pixels of the self-luminous display for displaying the test image are controlled by means of an electrical signal. The device also has a computing unit for determining a comparison value of the pixels of the self-luminous display controlled for displaying the test image and for comparing the comparison value with a reference value of the controlled pixels, wherein if the comparison value deviates from the reference value by a pre-given degree, a pixel is recognized as having interference, and wherein if the number of pixels recognized as having interference exceeds a pre-given threshold, it is ascertained that the self-luminous display has interference. When it is ascertained that the self-luminous display has interference, if the observer is not looking at the self-luminous display, a correction of the self-luminous display is performed.

[0026] The advantages of the present invention are as follows: By correcting or compensating the pixels of a self-luminous display, the service life of each pixel of the self-luminous display can be improved or homogenized, thereby slowing down the aging of the self-luminous display. This can be achieved, for example, by matching colors, brightness, movement or scaling of the image content. Advantageously, by correcting the pixels of the self-luminous display, a uniform service life on the pixels of the self-luminous display can be achieved, whereby these pixels age especially at the same rate, where in the case of aging pixels, the brightness is reduced, for example. In the case where different pixels or pixel groups age differently, different activities on the self-luminous display can be perceived by the human eye. Therefore, through the correction of the pixels and thus specific adjustment, the aging can proceed uniformly on all pixels.

[0027] The execution of testing and correction especially when the observer is not looking at the display or self-luminous display can increase the viewing experience and / or reduce distraction of the observer. If the observer of the self-luminous display is, for example, in a vehicle, safety in road traffic can be especially improved by avoiding distraction.

[0028] In an expansion scheme, the device may have observation means for identifying whether the observer of the self-luminous display is looking at the self-luminous display.

[0029] For this purpose, if the observer's eyes can be seen, for example, the first axis between at least one eye or both eyes of the observer and the self-luminous display can be determined by means of the observation means and the line of sight axis of the observer can be determined, where if the line of sight axis deviates from the first axis by more than approximately 45 degrees, especially more than approximately 90 degrees, especially more than approximately 100 degrees, it is recognized that the observer is looking at the self-luminous display. Through this, it can be especially safely and / or reliably recognized whether the observer is looking at the self-luminous display. Therefore, it can be especially ensured that the test or matching of the image content of the self-luminous display is only performed when the observer is not looking at the display device, for example, by compensating or correcting the image content of the self-luminous display to perform the test or matching of the image content of the self-luminous display. Through this, distraction of the observer can be especially avoided. Description of the Drawings

[0030] Embodiments of the present invention are shown in the drawings and further elaborated in the following description. The same reference numerals are used for elements shown in different figures and having similar functions, where the repeated description of these elements is omitted. Among them:

[0031] Figure 1 A schematic diagram of a vehicle with a device for observing vehicle occupants is shown;

[0032] Figure 2 A schematic diagram of a vehicle with a display unit is shown;

[0033] Figure 3 Shows a schematic view of a vehicle having a display unit;

[0034] Figure 4 Shows a flowchart of a method according to an embodiment of the present invention;

[0035] Figure 5 Shows a schematic view of a device according to an embodiment of the present invention. Detailed implementation manner

[0036] Figure 1 Shows a schematic view of a vehicle 20, such as a motor vehicle, such as a car, which has an observation device 22 for observing a vehicle occupant 24. The vehicle 20 particularly has an interior space 26, in which one or more seats 28 for one or more vehicle occupants 24 can be particularly arranged. The vehicle 20 also has an observation device 22 for observing the vehicle occupant 24, wherein the observation device 22 can also be referred to as an observation system and / or as an occupant observation system. The observation device 22 can be configured, for example, to detect the line of sight direction and / or position of the head or face or both eyes of the vehicle occupant 24, especially the driver 24 or the co-driver, or to detect the fatigue state and / or other vital signs of the vehicle occupant 24. For example, the identity of the vehicle occupant 24 can also be detected.

[0037] For observing the vehicle occupant 24, the observation device 22 has an illumination unit 30 for emitting infrared rays and a photographing unit 32. The observation device 22 can particularly be arranged in the dashboard 34 and / or instrument panel 34 of the vehicle 20. In an advantageous embodiment, the observation device 22 can particularly be arranged in the combination instrument in the dashboard 34. Alternatively or additionally, the observation device 22 can also be arranged at other positions in the interior space 26 of the vehicle 20, for example, arranged at the roof 38, the rearview mirror or at the pillars 20 of the vehicle, such as the A-pillar and / or B-pillar.

[0038] The illumination unit 30 is particularly directed towards the vehicle occupant 24 and thus towards the vehicle seat 28 in order to irradiate the vehicle occupant 24 with infrared rays. In other words, infrared rays are emitted in the direction of the vehicle occupant 24 by means of the illumination unit 30. The illumination unit 30 can be configured, for example, as a light-emitting unit, a light-emitting element, a light-emitting diode, an LED, an OLED and / or a laser diode, and / or can have a light-emitting unit, a light-emitting element, a light-emitting diode, an LED, an OLED and / or a laser diode.

[0039] The imaging unit 32 can for example be configured as an image capture unit, such as a camera, in particular as an infrared camera module, where the imaging unit 32 is directed towards the direction of the vehicle occupant 24 and thus towards the direction of the vehicle seat 28, in order to visually detect the vehicle occupant 24 of the vehicle 20. By being configured as an infrared camera module, it is possible to perform the observation even at night, without the vehicle occupant 24 being brightly illuminated and thus dazzled.

[0040] The observation device 22 also has a control unit 36 or an analysis unit 36 or a calculation unit 36 for controlling the lighting unit 30 and / or the imaging unit 32 and / or for processing the data captured by means of the imaging unit 32.

[0041] In an extended embodiment, the vehicle 20 can have a self-luminous display, where according to Figure 2 and / or Figure 3 the self-luminous display can be arranged in the vehicle 20.

[0042] Figure 2 A schematic top view of the vehicle 20, such as a motor vehicle, such as a car, is shown, which vehicle has a self-luminous display 40 for displaying or presenting an image representation to the vehicle occupant 24. The vehicle 20 according to Figure 2 can be constructed according to the vehicle 20 according to Figure 1 the vehicle 20.

[0043] The self-luminous display 40 is configured to display an image representation and can for example be arranged in the instrument panel 34 or dashboard 34 of the vehicle 20. Alternatively or additionally, the self-luminous display 40 can be arranged at other positions in the dashboard 34 of the vehicle 20 and / or at other positions in the vehicle 20, such as at the seat 28. By means of the self-luminous display 40, information about the vehicle 20, such as vehicle status information, or information about the vehicle mode, such as speed and / or rpm and / or temperature and / or fuel tank level and / or navigation instructions and / or information of the vehicle entertainment system and / or other information, which other information can be used for operating the vehicle and / or for entertainment, can be displayed.

[0044] The self-luminous display 40 is arranged in the vehicle 20 such that the vehicle occupant 24 can observe the information presented by means of the self-luminous display 40. The vehicle occupant 24 can in particular be an observer of the self-luminous display 40, such as the driver and / or co-driver of the vehicle 20.

[0045] The vehicle 20 also has an observation device 22. The observation device 22 according to Figure 2 can be constructed according to the observation device according to Figure 1 and can be arranged in the vehicle 20 according to Figure 1 the arrangement.

[0046] Figure 3 shows a schematic view of a segment of the vehicle 20 from the side with the self-luminous display 40. In accordance with Figure 3 the vehicle 20 can be implemented according to the vehicle 20 in accordance with Figure 2 the vehicle 20 can be implemented. In accordance with Figure 3 the self-luminous display 40 can in particular be implemented according to the self-luminous display 40 in accordance with Figure 2 and can be arranged in the vehicle 20 in accordance with Figure 2 The vehicle 20 also has an observation device 22. In accordance with Figure 3 the observation device 22 can be constructed according to the observation device in accordance with Figure 1 and can be arranged in the vehicle 20 in accordance with Figure 1 and / or in accordance with Figure 2 arranged in the vehicle 20.

[0047] Figure 4 shows a flow chart of a method 42 for calibrating a self-luminous display having a plurality of pixels, in particular a self-luminous display having a plurality of pixels for a vehicle, according to an embodiment of the present invention. The vehicle can in particular be constructed according to the vehicle in accordance with Figure 1 and / or in accordance with Figure 2 In accordance with Figure 3 the vehicle to be constructed.

[0048] In a first step 44 of the identification of the method 42, it is identified whether an observer of the self-luminous display is looking at the self-luminous display. Preferably, it is determined by means of the observation device whether the eyes of the observer can be seen. Furthermore, if the eyes of the observer can be seen, the first axis between at least one eye or both eyes of the observer and the self-luminous display is determined by means of the observation device and the line of sight axis of the observer is determined, wherein if the line of sight axis deviates from the first axis by more than about 45 degrees, in particular more than about 90 degrees, in particular more than about 100 degrees, it is identified that the observer is looking at the self-luminous display. Thus, in particular, it is determined whether the observer can no longer see the self-luminous display, in particular whether the self-luminous display can no longer be clearly seen. In an expansion scheme, it can be determined whether the self-luminous display is also not within the peripheral vision of the observer.

[0049] In a second step 46 of the method 42 shown, a test image is displayed, wherein if the observer does not fixate on the self-luminous display, at least a part of the pixels of the self-luminous display for displaying the test image are manipulated by means of an electrical signal. The test image can for example be a defined image or image content. For example, an image is displayed in which individual pixels flash. Preferably, the pixels manipulated for displaying the test image can be manipulated with a predefined, in particular maximum, intensity. In addition, the pixels on a horizontal and / or vertical line can be manipulated with the same intensity. Preferably, if it is recognized that the observer is fixating on the self-luminous display, the display of the test image can be stopped.

[0050] In an expansion scheme, the manipulation of different pixels can be performed according to the running time or other running parameters, wherein if the observer does not fixate on the display, a matching is performed.

[0051] In a third step 48 of the method 42 determined, a comparison value of the pixels of the self-luminous display manipulated for displaying the test image is determined. In order to determine the comparison value of the manipulated pixels of the self-luminous display, in particular the voltage attached to the manipulated pixels can be measured. Preferably, the comparison value can be a voltage and / or a current. In an expansion scheme, the comparison value can be determined on the characteristic curve of the pixels of the self-luminous display. In this case, for example, the voltage is measured, wherein the voltage is transmitted into a diagram with the characteristic curve of the pixels, and thus the comparison value can be read off correspondingly.

[0052] In a fourth step 50 of the comparison of the method 42, the comparison value is compared with a reference value of the manipulated pixels, wherein if the comparison value deviates from the reference value by a predefined degree, a pixel is recognized as being defective. Preferably, the reference value can be a voltage and / or a current. The reference value can in particular be determined by means of a calculation unit according to the electrical signal for manipulating the pixels of the self-luminous display. In an expansion scheme, the reference value can be determined on the characteristic curve of the pixels of the self-luminous display. In this case, for example, the voltage is measured, wherein the voltage is transmitted into a diagram with the characteristic curve of the pixels, and thus the reference value can be read off correspondingly.

[0053] In a fifth step 52 of the ascertainment of the method 42, if the number of defective pixels recognized exceeds a predefined threshold, it is ascertained that the self-luminous display is defective. In other words, the predefined threshold defines the number of pixels. If the number of defective pixels is reached, it is recognized that the self-luminous display is defective.

[0054] In the sixth step 54 of the execution of method 42, if interference of the self-luminous display is detected, correction and / or compensation of the self-luminous display is performed, wherein the correction is performed if the observer is not looking at the self-luminous display. Preferably, if it is recognized that the observer is looking at the self-luminous display, the correction of the self-luminous display is stopped. To correct the self-luminous display, for example, the image representation to be displayed on the self-luminous display can be moved a pre-given number of pixels on the self-luminous display and / or the image representation to be displayed can be scaled by a pre-given degree. Thereby, the pixels can in particular be manipulated with varying intensities in the future, whereby the load of the individual pixels can be distributed more evenly.

[0055] In an extension, the manipulation of different pixels can be adapted according to the runtime or other operating parameters to compensate for undesired display characteristics, wherein the adaptation is performed if the observer is not looking at the display.

[0056] Additionally, in an advantageous embodiment, method 42 can have a seventh step 56, wherein in the seventh step 56, if interference of the self-luminous display is detected and if the number of pixels identified as having interference exceeds a pre-given second threshold, the self-luminous display is switched to a safe mode. The self-luminous display can in particular display a warning symbol and / or be switched off in the safe mode. The number of pixels of the second threshold is in particular greater than the number of pixels of the first threshold.

[0057] Figure 5 A schematic view of a device 60 for correcting a self-luminous display 40 having a plurality of pixels according to an embodiment of the present invention is shown. The device 60 can in particular be arranged in a vehicle, for example according to Figure 1 and / or according to Figure 2 and / or according to Figure 3 of the vehicle. The method 42 for correcting a self-luminous display 40 having a plurality of pixels according to Figure 4 can be implemented on the device 60.

[0058] The device 60 has a receiving unit 62 for receiving a signal as to whether an observer 24 of the self-luminous display 40 is looking at the self-luminous display 40. In an extension, the device 60 can also have an observing device 22 for recognizing whether an observer 24 of the self-luminous display 40 is looking at the self-luminous display 40. The recognition step can for example be implemented according to the first step of the method according to Figure 4

[0059] The device 60 further includes a self-luminous display 40 having a plurality of pixels for displaying a test image, wherein at least a part of the pixels of the self-luminous display 40 for displaying the test image are manipulated by means of an electrical signal if the observer 24 is not gazing at the self-luminous display 40. The step of displaying the test image can be implemented according to the second step of the method according to Figure 4 to be implemented.

[0060] The device 60 further includes a calculation unit 64 for determining a comparison value of the pixels of the self-luminous display 40 that are manipulated for displaying the test image and for comparing the comparison value with a reference value of the manipulated pixels, wherein if the comparison value deviates from the reference value by a pre-given degree, a pixel interference is identified, and wherein if the number of pixels identified as having interference exceeds a pre-given threshold, an interference of the self-luminous display 40 is ascertained. In other words, the comparison value is determined by means of the calculation unit 64 and the determined comparison value is compared with the reference value. By means of the calculation unit 64, an interference of individual pixels of the self-luminous display 40 can also be ascertained. The calculation unit 64 and the receiving unit 62 can be configured as one unit, or in other words the calculation unit 64 and the receiving unit 62 can be implemented in one unit. Alternatively, the calculation unit 64 and the receiving unit 62 can be configured as two different units.

[0061] When an interference of the self-luminous display 40 is ascertained, if the observer 24 is not gazing at the self-luminous display 40, a correction of the self-luminous display 40 is performed.

[0062] Thus, if the observer 24 looks, for example, along the first arrow 66 of the dashed line, the test image is displayed and / or a correction of the self-luminous display 40 is performed. If the observer 24 looks, for example, along the second arrow 68 of the solid line and thus gazes at the self-luminous display 40, the display of the test image is stopped and / or the correction of the self-luminous display 40 is stopped.

[0063] In order to recognize whether the observer 24 is looking at the self-luminous display 40, in particular, it is first determined with the aid of the observation device 22 whether the observer's eyes can be seen. Subsequently, a first axis 70 between at least one eye or both eyes of the observer 24 and the self-luminous display 40 is determined, and the line-of-sight axes 66, 68 of the observer 24 are determined. If the line-of-sight axes 66, 68 deviate from the first axis 70 by more than approximately 45 degrees, in particular by more than approximately 90 degrees, in particular by more than approximately 100 degrees, it is recognized that the observer 24 is looking at the self-luminous display 40. If the observer 24 looks along the first line-of-sight axis 66 and thus along the dashed arrow 66, the first line-of-sight axis 66 and thus the dashed first arrow 66 deviate from the first axis 70 by more than 45 degrees. Accordingly, it is indicated that the observer is not looking at the self-luminous display 40. Consequently, a test image can be displayed and / or the self-luminous display 40 can be calibrated. If the observer 24 looks along the second line-of-sight axis 68 and thus along the solid second arrow 68, the second line-of-sight axis 68 and thus the solid second arrow 68 deviate from the first axis 70 by less than 45 degrees. Accordingly, it is indicated that the observer is looking at the self-luminous display 40. Consequently, a test image cannot be displayed and / or the self-luminous display 40 cannot be calibrated at this point in time.

[0064] In an extended embodiment, the device may have a plurality of self-luminous displays 40.

Claims

1. A method (42) for calibrating and / or compensating a self-luminous display (40) having a plurality of pixels, the method having the following steps: Identifying whether an observer (24) of the self-luminous display (40) is looking at the self-luminous display (40); Displaying a test image, wherein if the observer (24) is not looking at the self-luminous display (40), at least a part of the pixels of the self-luminous display (40) for displaying the test image are manipulated by means of an electrical signal; Determining a comparison value of the pixels of the self-luminous display (40) that are manipulated for displaying the test image; Comparing the comparison value with a reference value of the manipulated pixels, wherein if the comparison value deviates from the reference value by a predefined degree, it is recognized that the pixel is disturbed; If the number of disturbed pixels identified exceeds a predefined threshold, it is ascertained that the self-luminous display (40) is disturbed; If it is ascertained that the self-luminous display (40) is disturbed, calibration of the self-luminous display (40) is performed, wherein if the observer (24) is not looking at the self-luminous display (40), the calibration is performed.

2. The method (42) according to claim 1, wherein the self-luminous display (40) is used in a vehicle (20).

3. The method (42) according to claim 1, wherein in the step of identifying whether the observer (24) is looking at the self-luminous display (40), it is determined by means of an observation device (22) whether the eyes of the observer (24) can be seen.

4. The method (42) according to claim 3, wherein if the eyes of the observer (24) can be seen, a first axis between at least one eye or both eyes of the observer (24) and the self-luminous display (40) is determined by means of the observation device (22) and the line of sight axis of the observer (24) is determined, wherein if the line of sight axis deviates from the first axis (70) by more than 45 degrees, it is recognized that the observer (24) is looking at the self-luminous display (40).

5. The method (42) according to claim 4, wherein if the line of sight axis deviates from the first axis (70) by more than 90 degrees, it is recognized that the observer (24) is looking at the self-luminous display (40).

6. The method (42) according to claim 4, wherein if the line of sight axis deviates from the first axis (70) by more than 100 degrees, it is recognized that the observer (24) is looking at the self-luminous display (40).

7. The method (42) according to any one of the preceding claims 1 to 6, wherein in the step of displaying the test image, the pixels manipulated for displaying the test image are manipulated with a predefined intensity.

8. The method (42) according to claim 7, wherein the pixels manipulated for displaying the test image are manipulated with maximum intensity.

9. The method (42) according to any one of claims 1 to 6 above, wherein in the step of displaying the test image, pixels on horizontal and / or vertical lines are manipulated using the same intensity.

10. The method (42) according to any one of claims 1 to 6 above, wherein in the step of determining the comparison value of the manipulated pixels of the self-luminous display (40), the voltage attached to the manipulated pixels is measured.

11. The method (42) according to any one of claims 1 to 6 above, wherein the comparison value and / or the reference value is a voltage and / or a current.

12. The method (42) according to any one of claims 1 to 6 above, wherein the reference value is determined by a calculation unit (64) based on the electrical signals for manipulating the pixels of the self-luminous display (40).

13. The method (42) according to any one of claims 1 to 6 above, wherein the comparison value and / or the reference value is determined on the characteristic curve of the pixels of the self-luminous display (40).

14. The method (42) according to any one of claims 1 to 6 above, wherein in the step of performing the correction of the self-luminous display (40), the image to be displayed on the self-luminous display (40) is moved a pre-given number of pixels and / or the image to be displayed is scaled by a pre-given degree.

15. The method (42) according to any one of claims 1 to 6 above, wherein if it is recognized that the observer (24) is gazing at the self-luminous display (40), the display of the test image and / or the correction of the self-luminous display (40) is stopped.

16. The method (42) according to any one of claims 1 to 6 above, wherein if it is found that the self-luminous display (40) has interference and if the number of pixels recognized as having interference exceeds a pre-given second threshold, the self-luminous display (40) is switched to the safe mode.

17. The method (42) according to claim 16, wherein the self-luminous display (40) displays a warning symbol and / or is turned off in the safe mode.

18. A device (60) for correcting and / or compensating a self-luminous display (40) having a plurality of pixels, characterized in that the device (60) has a receiving unit (62) for receiving a signal indicating whether an observer (24) of the self-luminous display (40) is gazing at the self-luminous display (40); the device (60) has a self-luminous display (40) with a plurality of pixels for displaying a test image, wherein if the observer (24) is not gazing at the self-luminous display (40), at least a part of the pixels of the self-luminous display (40) for displaying the test image is manipulated by electrical signals; The device (60) has a computing unit (64) for determining a comparison value of the pixels of the self-luminous display (40) that are actuated for displaying the test image and for comparing the comparison value with a reference value of the actuated pixels, wherein if the comparison value deviates from the reference value by a pre-given degree, interference of the pixel is recognized, and wherein if the number of pixels recognized as having interference exceeds a pre-given threshold, interference of the self-luminous display (40) is ascertained; and when interference of the self-luminous display (40) is ascertained, if the observer (24) is not looking at the self-luminous display (40), correction of the self-luminous display (40) is performed.

19. The device (60) according to claim 18, wherein the self-luminous display (40) is used in a vehicle (20).

20. The device (60) according to claim 18 or 19, characterized in that the device (60) has an observation device (22) for recognizing whether an observer (24) of the self-luminous display (40) is looking at the self-luminous display (40).

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