Control device and driving method thereof, and display device

Abstract

A control device comprises a memory (502) and a processor (501). The memory (502) is configured to store a time comparison table. The processor (501) is configured to determine whether a displayed picture is a static picture, and when it is determined that the displayed picture is a static picture, according to the average image level and type of the static picture, the corresponding static picture is searched from the time comparison table to determine the duration.

Description

Technical Field

[0001] This article relates to but is not limited to the field of display technology, and in particular to a control device and a driving method thereof, and a display device. Background Art

[0002] Organic Light Emitting Display (OLED) display devices are considered to be an emerging application technology for the next generation of flat panel displays because of their excellent properties such as self-luminescence, high contrast, thin thickness, wide viewing angle, fast response speed, application in flexible panels, wide operating temperature range, and simple structure and process. Summary of the invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] Embodiments of the present disclosure provide a control device and a driving method thereof, and a display device.

[0005] In one aspect, an embodiment of the present disclosure provides a control device, comprising: a memory and a processor. The memory is configured to store a time comparison table. The processor is configured to determine whether a displayed picture is a static picture, and when the displayed picture is determined to be a static picture, according to the average image level and type of the static picture, find the corresponding static picture from the time comparison table to determine the duration.

[0006] In some exemplary embodiments, the processor is further configured to determine whether the static picture remains static within the static picture judgment time length, and when it is determined that the static picture remains static for a period of time that reaches the static picture judgment time length, the brightness of the static picture is attenuated until the static picture no longer remains static.

[0007] In some exemplary embodiments, the type of the static picture is one of the following: a full-screen picture, a monochrome window picture, and a mixed-color window picture.

[0008] In some exemplary embodiments, the time comparison table stores a mapping relationship between an average image level of a full-screen static picture and a static picture determination duration, and a mapping relationship between an average image level of a windowed static picture and a static picture determination duration.

[0009] In some exemplary embodiments, the mapping relationship between the average image level of the full-screen static picture and the static picture judgment time includes: when the average image level of the full-screen static picture is less than or equal to a first threshold, the static picture judgment time is a first value; when the average image level of the full-screen static picture is greater than the first threshold, the static picture judgment time is less than the first value and greater than or equal to a second value, wherein as the average image level of the full-screen static picture increases, the static picture judgment time decreases.

[0010] In some exemplary embodiments, the first threshold is in a range of 0.4 to 0.6.

[0011] In some exemplary embodiments, the mapping relationship between the average image level of the window static picture and the static picture judgment time includes: when the window static picture is a monochrome window display picture, and the average image level of the window static picture is less than or equal to the second threshold, the static picture judgment time is a third value; when the window static picture is a monochrome window display picture, and the average image level of the window static picture is greater than the second threshold and less than or equal to the third threshold, the static picture judgment time is greater than the third value and less than or equal to the fourth value, and as the average image level of the window static picture increases, the static picture judgment time increases; when the window static picture is a mixed-color window display picture, and the average image level of the window static picture is greater than the third threshold, the static picture judgment time is greater than the third value and less than or equal to the fourth value, and as the average image level of the window static picture increases, the static picture judgment time decreases.

[0012] In some exemplary embodiments, the second threshold is in a range of less than or equal to 0.05, and the third threshold is in a range of 0.4 to 0.6.

[0013] In some exemplary embodiments, the mapping relationship between the average image level of the window static picture and the static picture judgment time includes: when the window static picture is a monochrome window display picture, and the average image level of the window static picture is less than or equal to a fourth threshold, the static picture judgment time is a fifth value; when the window static picture is a monochrome window display picture, and the average image level of the window static picture is greater than the fourth threshold and less than or equal to the fifth threshold, the static picture judgment time is greater than the fifth value and less than or equal to the sixth value, and as the average image level of the window static picture increases, the static picture judgment time increases; when the window static picture is a mixed-color window display picture, the static picture judgment time is a seventh value, wherein the seventh value is less than the sixth value.

[0014] In some exemplary embodiments, the fourth threshold is in a range of less than or equal to 0.05, and the fifth threshold is in a range of 0.4 to 0.6.

[0015] In some exemplary embodiments, the time comparison table stores the following mapping relationship:

[0016] When the average image level of the full-screen static picture is in [0, 0.5], y = 60;

[0017] When the average image level of the full-screen static picture is (0.5, 1], y = -100x + 110;

[0018] When the average image level of the monochrome window static picture is in [0, 0.05], y = 10;

[0019] When the average image level of the monochrome window static picture is (0.05, 0.5], y = 111x + 4.44;

[0020] When the average image level of the static picture in the color mixing window is (0.5, 1], y = -100x + 110;

[0021] Wherein, x represents the average image level of the static picture, and y represents the judgment duration of the static picture.

[0022] In some exemplary embodiments, the time comparison table stores the following mapping relationship:

[0023] When the average image level of the full-screen static picture is in [0, 0.5], y = 60;

[0024] When the average image level of the full-screen static picture is (0.5, 1], y = -100x + 110;

[0025] When the average image level of the monochrome window static picture is in [0, 0.05], y = 10;

[0026] When the average image level of the monochrome window static picture is (0.05, 0.5], y = 111x + 4.44;

[0027] When the average image level of the static picture in the color mixing window is in [0, 1], y = 10;

[0028] Wherein, x represents the average image level of the static picture, and y represents the judgment duration of the static picture.

[0029] On the other hand, an embodiment of the present disclosure provides a driving method for a control device, including: determining whether a displayed picture is a static picture; when it is determined that the displayed picture is a static picture, searching a corresponding static picture from a stored time comparison table to determine the duration according to an average image level and type of the static picture.

[0030] In some exemplary embodiments, the above method also includes: determining whether the static picture remains static within the static picture judgment time length; when it is determined that the time length for which the static picture remains static reaches the static picture judgment time length, attenuating the brightness of the static picture until the static picture no longer remains static.

[0031] On the other hand, an embodiment of the present disclosure provides a display device, including the control device as described above.

[0032] In some exemplary embodiments, the control device is integrated into a timing controller; or, a processor of the control device is integrated into the timing controller, and a memory of the control device is provided independently of the timing controller.

[0033] In some exemplary embodiments, the display device may further include a data driver configured to generate a data signal provided to the data signal line using the grayscale value and the control signal received from the timing controller.

[0034] In some exemplary embodiments, the display device may further include a gate driver configured to generate a scan signal provided to the scan signal line and a sensing control signal provided to the sensing control line using a clock signal and a start signal received from the timing controller.

[0035] In some exemplary embodiments, the display device may further include: a pixel array; the pixel array includes a plurality of sub-pixels, at least one sub-pixel includes a pixel circuit and a light-emitting element. The pixel circuit includes: an input transistor, a driving transistor, a sensing transistor, and a storage capacitor. The control electrode of the input transistor is electrically connected to the scan signal line, the first electrode of the input transistor is electrically connected to the data signal line, and the second electrode of the input transistor is electrically connected to the control electrode of the driving transistor. The first electrode of the driving transistor is electrically connected to the first power line, and the second electrode of the driving transistor is electrically connected to the first electrode of the light-emitting element. The control electrode of the sensing transistor is electrically connected to the sensing control line, the first electrode of the sensing transistor is electrically connected to the second electrode of the driving transistor, and the second electrode of the sensing transistor is electrically connected to the sensing signal line. The first electrode of the storage capacitor is electrically connected to the control electrode of the driving transistor, and the second electrode of the storage capacitor is electrically connected to the second electrode of the driving transistor. The second electrode of the light-emitting element is electrically connected to the second power line.

[0036] On the other hand, an embodiment of the present disclosure provides a non-transitory computer-readable storage medium storing a computer program, wherein the computer program implements the method described above when executed.

[0037] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation on the technical solution of the present disclosure. The shape and size of one or more components in the accompanying drawings do not reflect the actual proportions and are only intended to illustrate the contents of the present disclosure.

[0039] Figure 1 It is a brightness attenuation curve diagram of a static picture;

[0040] Figure 2 is a schematic diagram of a control device according to at least one embodiment of the present disclosure;

[0041] Figure 3 is a schematic diagram of a display device according to at least one embodiment of the present disclosure;

[0042] Figure 4 is a schematic diagram of a pixel circuit according to at least one embodiment of the present disclosure;

[0043] Figure 5 A curve diagram showing the relationship between the average image level and the static picture judgment duration according to at least one embodiment of the present disclosure;

[0044] Figure 6 is another relationship curve diagram of the average image level and the static picture judgment duration according to at least one embodiment of the present disclosure;

[0045] Figure 7 This is an example diagram of a full-screen static picture of at least one embodiment of the present disclosure;

[0046] Figure 8 This is an example diagram of a monochrome window static screen according to at least one embodiment of the present disclosure;

[0047] Fig. 9 This is an example diagram of a static screen of a color mixing window according to at least one embodiment of the present disclosure;

[0048] Fig.10 A brightness attenuation curve diagram of different static images of at least one embodiment of the present disclosure;

[0049] Fig.11 is another schematic diagram of a display device according to at least one embodiment of the present disclosure;

[0050] Fig.12 The present invention is a flowchart of a driving method of a control device according to at least one embodiment of the present invention. DETAILED DESCRIPTION

[0051] The embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The embodiments can be implemented in a plurality of different forms. A person skilled in the art can easily understand the fact that the method and content can be transformed into other forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0052] In the drawings, the size of one or more components, the thickness of a layer, or an area is sometimes exaggerated for the sake of clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to the size, and the shape and size of one or more components in the drawings do not reflect the true proportion. In addition, the drawings schematically show ideal examples, and one embodiment of the present disclosure is not limited to the shapes or values ​​shown in the drawings.

[0053] The ordinal numbers such as "first", "second", and "third" in this specification are provided to avoid confusion of constituent elements, and are not intended to limit the quantity. The "plurality" in this disclosure means two or more.

[0054] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the orientation of the constituent elements being described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the circumstances.

[0055] In this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or a connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in this disclosure can be understood according to the circumstances.

[0056] In this specification, "electrical connection" includes the case where components are connected together through an element having some electrical function. There is no particular limitation on the "element having some electrical function" as long as it can transmit electrical signals between connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having multiple functions.

[0057] In this specification, "parallel" means a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore, also includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" means a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore, also includes a state where the angle is greater than 85° and less than 95°.

[0058] The terms “about” and “substantially” in the present disclosure refer to values ​​that are not strictly limited and allow for process and measurement errors.

[0059] With the development of display technology, users have higher and higher requirements for the intelligent functions of displays. For example, a static picture in a high-brightness state that is lit for a long time can easily cause aging of the thin-film transistor (TFT) and produce afterimages, thereby affecting the display effect of the display. In order to avoid the short-term afterimage of the panel caused by the long-term fixed pressure of the static high-brightness picture on the driving transistor of the OLED, the brightness of the displayed static picture will be attenuated. In some examples, the current frame display picture is judged whether it is consistent with the previous frame display picture according to the characteristic value of the display picture (for example, brightness and grayscale, etc.); if the characteristic values ​​of the two frames of display pictures are consistent, the current frame display picture is judged to be a static picture; when the static picture remains static (that is, the characteristic value remains consistent) within the static picture judgment time, the brightness attenuation is turned on for the static picture; if the characteristic value is inconsistent within the static picture judgment time, the static judgment of the display picture is restarted.

[0060] Figure 1 It is a brightness attenuation curve of a static picture. Figure 1As shown, for static images with different average picture levels (APL, Average Pixel Level), the static image judgment duration and brightness attenuation duration are consistent. For example, APL can be the average value of the sum of the brightness of all pixels in the display image, or it can be the ratio of the sum of the brightness of all pixels in the display image to the maximum brightness of the pixel. APL can reflect the brightness of the display image. The display brightness gain (Gain) value under different APLs can be a parameter value obtained using a high dynamic range (HDR, High Dynamic Range) algorithm. For example, APL=0.05 corresponds to a 10% window, a monochrome picture at 255 grayscale, the maximum display brightness of white is 800nit, and the gain value used is 1; APL=0.25 corresponds to a 50% window, a monochrome picture at 255 grayscale (for example, 255 grayscale red, 255 grayscale green, 255 grayscale blue, or 255 grayscale white), the display brightness of white is 360nit, and the gain value used is 0.45; APL=0.5 corresponds to a full-screen, 255 grayscale monochrome picture (for example, 255 grayscale red, 255 grayscale green, 255 grayscale blue, or 255 grayscale white), the display brightness of white is 200nit, and the gain value used is 0.25; APL=1 corresponds to a full-screen, 255 grayscale mixed color picture (for example, a 255 grayscale red-green picture, a 255 grayscale green-blue picture, a 255 grayscale red-blue picture).

[0061] like Figure 1 As shown in the figure, the static images of APL=0.05, APL=0.5, APL=0.25 and APL=1 all start to decay in brightness at time point T0, and complete uniform brightness decay at time point T4, for example, the brightness decay amplitude is 50% of the original brightness. The static image judgment duration is the duration from the origin to time point T0, and the brightness decay duration is the duration from time point T0 to time point T4.

[0062] Depend on Figure 1 It can be seen that no matter how bright or dark the static image is, the brightness decay starts at the same time point (ie, time point T0). For a high-brightness static image, a short-term afterimage may still be caused, and the power consumption saved is limited.

[0063] The embodiments of the present disclosure provide a control device and a driving method thereof, and a display device, which flexibly adjust the static picture judgment time for different static pictures, so as to effectively solve the short-term afterimage problem caused by high-brightness static pictures, and can reduce power consumption, thereby improving the display effect of the display product.

[0064] Figure 2 FIG. 1 is a schematic diagram of a control device according to at least one embodiment of the present disclosure. Figure 2As shown, the control device provided by the embodiment of the present disclosure includes: a memory 502 and a processor 501. The memory 502 is configured to store a time comparison table. The processor 501 is configured to determine whether the displayed picture is a static picture, and when it is determined that the displayed picture is a static picture, according to the average image level and type of the static picture, find the corresponding static picture from the time comparison table to determine the duration.

[0065] In some exemplary embodiments, the processor may also be configured to determine whether the static picture remains static within the static picture judgment time length, and when it is determined that the static picture remains static for a period of time that reaches the static picture judgment time length, the brightness of the static picture is attenuated until the static picture no longer remains static.

[0066] In some exemplary embodiments, the processor may determine whether the display screen is a static screen according to a static screen judgment condition. For example, the static screen judgment condition may include: if the feature value of the current frame display screen is consistent with that of the previous frame display screen, then the current frame display screen is determined to be a static screen. In some examples, the memory may sequentially store image data of multiple frames of display screens, and the processor may determine whether there is a static screen by comparing whether the feature values ​​of the image data of multiple consecutive frames are consistent. In some examples, the feature value may include a grayscale sum. However, this embodiment is not limited to this.

[0067] In some exemplary embodiments, the type of the static picture may be one of the following: a full-screen picture, a monochrome window picture, and a mixed-color window picture. In some examples, the type of the static picture may be determined based on the number and color of valid display sub-pixels in the display picture. Among them, the valid display sub-pixels may be sub-pixels whose display grayscale is not 0. For example, the display area of ​​the static picture may be determined based on the number of valid display sub-pixels in the display area, thereby determining whether the static picture is a full-screen display picture. Among them, the display area of ​​the full-screen display picture accounts for approximately 100% of the area of ​​the display area, and the display area of ​​the window display picture may account for less than 100% of the area of ​​the display area. Whether the static picture is a monochrome picture may be determined based on the color of the valid display sub-pixels of the static picture.

[0068] In some exemplary embodiments, the value range of APL may be 0 to 1, that is, greater than or equal to 0 and less than or equal to 1. In some examples, the APL of a static picture may be calculated in the following manner: the brightness of all sub-pixels (for example, including red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels) of the display area is accumulated to obtain the total brightness, and the ratio of the total brightness to a constant is calculated to obtain the APL, and the calculated APL is between 0 and 1. For example, the above constant may be the area of ​​the display area. However, this embodiment is not limited to this.

[0069] In some exemplary embodiments, after determining that the displayed picture is a static picture, the processor can determine the APL of the static picture, and by searching the time comparison table pre-stored in the memory, multiple static picture judgment durations corresponding to the APL of the static picture can be obtained, and then, according to the type of the static picture, a static picture judgment duration matching the type of the static picture is selected from the multiple static picture judgment durations found. Alternatively, in some examples, after determining that the displayed picture is a static picture, the processor can find the mapping relationship between the APL of the static picture that meets the type and the static picture judgment duration by searching the time comparison table in the memory according to the type of the static picture, and then determine the corresponding static picture judgment duration according to the APL of the static picture and the mapping relationship. However, this embodiment is not limited to this.

[0070] In some exemplary embodiments, after the processor determines the static picture judgment duration of the static picture by querying the time comparison table, the static picture can be subjected to brightness attenuation processing after the static picture remains static for a period of time that reaches the static picture judgment duration. When it is detected that the static picture no longer remains static, the brightness attenuation processing is stopped. If the static picture remains static for a period of time that does not reach the static picture judgment duration, the static picture is not subjected to brightness attenuation processing, and the current frame display picture continues to be judged whether it remains static. After determining the static picture, the time comparison table is requeried to determine the static picture judgment duration corresponding to the new static picture. In this example, the static picture remains static, that is, the static picture meets the static picture judgment condition, and the static picture does not remain static, that is, the static picture does not meet the static picture judgment condition. In some examples, the brightness attenuation processing of the static picture may include: attenuating the brightness of each valid pixel of the static picture, for example, multiplying the brightness of each valid pixel by a proportional coefficient less than 1 to achieve brightness attenuation of each valid pixel. However, this embodiment is not limited to this.

[0071] The control device provided in this embodiment flexibly adjusts the static picture judgment duration of the static picture based on the type of the static picture and the APL, which is beneficial to shortening the overall time for the static picture to decay in brightness, thereby effectively avoiding the short-term afterimage caused by high-brightness static pictures, and can reduce power consumption, thereby improving the display effect of the display product.

[0072] In some exemplary embodiments, the time comparison table in the memory stores the mapping relationship between the average image level of the full-screen static picture and the static picture determination time, and the mapping relationship between the average image level of the windowed static picture and the static picture determination time.

[0073] In some exemplary embodiments, the mapping relationship between the average image level of the full-screen static picture and the static picture judgment time may include: when the average image level of the full-screen static picture is less than or equal to a first threshold, the static picture judgment time is a first value; when the average image level of the full-screen static picture is greater than the first threshold, the static picture judgment time is less than the first value and greater than or equal to a second value, wherein as the average image level of the full-screen static picture increases, the static picture judgment time decreases.

[0074] In some exemplary embodiments, when the APL of the full-screen static picture is greater than the first threshold, the APL of the full-screen static picture and the static picture determination duration may be in a linear relationship. For example, the mapping relationship between the APL of the full-screen static picture and the static picture determination duration may satisfy a straight line equation or a curve equation. However, this embodiment is not limited to this.

[0075] In some exemplary embodiments, the first threshold value may range from 0.4 to 0.6 (i.e., greater than or equal to 0.4 and less than or equal to 0.6). For example, the first threshold value may be approximately 0.5. In some examples, the first value may be approximately 60, and the second value may be approximately 10. For example, when the APL of the full-screen static picture is less than or equal to 0.5, the static picture judgment duration of the full-screen static picture may be approximately 60s; when the APL of the full-screen static picture is greater than 0.5, the static picture judgment duration of the full-screen static picture may be within a range of less than 60s and greater than or equal to 10s, and decreases as the APL increases. However, this embodiment is not limited to this. For example, the first value and the second value may be other values, and the first value is greater than the second value.

[0076] In some exemplary embodiments, the mapping relationship between the APL of the window static picture and the static picture judgment time includes: when the window static picture is a monochrome window display picture and the average image level of the window static picture is less than or equal to the second threshold, the static picture judgment time is a third value; when the window static picture is a monochrome window display picture and the average image level of the window static picture is greater than the second threshold and less than or equal to the third threshold, the static picture judgment time is greater than the third value and less than or equal to the fourth value, and as the average image level of the window static picture increases, the static picture judgment time increases; when the window display picture is a mixed color window display picture and the average image level of the window static picture is greater than the third threshold, the static picture judgment time is greater than the third value and less than or equal to the fourth value, and as the average image level of the window static picture increases, the static picture judgment time decreases.

[0077] In some exemplary embodiments, there is a linear relationship between the APL of the window static picture and the static picture judgment time. For example, when the APL of the window static picture is greater than the second threshold and less than or the third threshold, the mapping relationship between the APL of the window static picture and the static picture judgment time can satisfy a straight line equation or a curve equation; when the APL of the window static picture is greater than the third threshold, the mapping relationship between the APL of the window static picture and the static picture judgment time can satisfy another straight line equation or another curve equation. However, this embodiment is not limited to this.

[0078] In some exemplary embodiments, the range of the second threshold is less than or equal to 0.05, and the range of the third threshold is 0.4 to 0.6 (i.e., greater than or equal to 0.4 and less than or equal to 0.6). For example, the second threshold may be approximately 0.05, and the third threshold may be approximately 0.5. In some examples, the third value may be substantially the same as the second value, for example, both are approximately 10; the fourth value may be substantially the same as the first value, for example, both are approximately 60. For example, when the APL of the window static picture is less than or equal to 0.05, the static picture judgment duration of the window static picture may be approximately 10s; when the APL of the window static picture is greater than 0.05 and less than or equal to 0.5, the static picture judgment duration of the window static picture is within the range of 10s to 60s, and increases as the APL increases; when the APL of the window static picture is greater than 0.5, the APL of the window static picture is within the range of 10s to 60s, and decreases as the APL increases. However, this embodiment is not limited to this. For example, the third value and the fourth value may be other values, and the fourth value is greater than the third value.

[0079] In some exemplary embodiments, the mapping relationship between the average image level of the window static picture and the static picture judgment time may include: when the window static picture is a monochrome window display picture, and the average image level of the window static picture is less than or equal to the fourth threshold, the static picture judgment time is a fifth value; when the window static picture is a monochrome window display picture, and the average image level of the window static picture is greater than the fourth threshold and less than or equal to the fifth threshold, the static picture judgment time is greater than the fifth value and less than or equal to the sixth value, and as the average image level of the window static picture increases, the static picture judgment time increases; when the window static picture is a mixed-color window display picture, the static picture judgment time is a seventh value, and the seventh value is less than the sixth value.

[0080] In some exemplary embodiments, the APL of the window static picture and the static picture judgment duration may be in a linear relationship. For example, the mapping relationship between the APL of the monochrome window static picture and the static picture judgment duration within the range where the APL is greater than the fourth threshold and less than or equal to the fifth threshold may satisfy a straight line equation or a curve equation. However, this embodiment is not limited to this.

[0081] In some exemplary embodiments, the range of the fourth threshold value may be less than or equal to 0.05, and the range of the fifth threshold value may be 0.4 to 0.6 (i.e., greater than or equal to 0.4 and less than or equal to 0.6). For example, the fourth threshold value may be approximately 0.05, and the fifth threshold value may be approximately 0.5. In some examples, the fifth value and the seventh value may be the same, for example, both may be approximately 10, and the sixth value may be approximately 60. For example, the APL of the monochrome window display screen is less than or equal to 0.05, and the static picture judgment time may be approximately 10s; the APL of the monochrome window display screen is greater than 0.05 and less than or equal to 0.5, and the static picture judgment duration may be in the range of 10s to 60s, increasing as the APL increases; the static picture judgment duration of the mixed color window display screen may be approximately 10s. However, this embodiment is not limited to this. For example, the fifth value, the sixth value, and the seventh value may be other values, wherein the fifth value and the seventh value may be different, the sixth value is greater than the fifth value, and the sixth value is greater than the seventh value.

[0082] The solution of this embodiment is illustrated below through multiple examples.

[0083] Figure 3 FIG. 1 is a schematic diagram of a display device according to at least one embodiment of the present disclosure. Figure 3 As shown, the display device of this exemplary embodiment includes: a pixel array 12 and a panel driver. The panel driver is configured to drive the pixel array 12. The panel driver may include: a timing controller 10, a data driver 20 and a gate driver 30. The control device 101 provided in this embodiment may be integrated in the timing controller 10.

[0084] In some exemplary embodiments, the pixel array 12 may include: a plurality of scan signal lines (e.g., GL1 to GLm), a plurality of data signal lines (e.g., DL1 to DLn), a plurality of sensing control lines (e.g., SL1 to SLm), a plurality of sensing signal lines (not shown), and a plurality of sub-pixels Pxij, wherein m and n are both positive integers.

[0085] In some exemplary embodiments, a plurality of scan signal lines GL1 to GLm and a plurality of sensing control lines SL1 to SLm are formed in a first direction (e.g., a horizontal direction) of the display panel, and a plurality of data signal lines DL1 to DLn and a plurality of sensing signal lines may be formed in a second direction (e.g., a vertical direction) of the display panel. The first direction intersects with the second direction, for example, the first direction is perpendicular to the second direction. The plurality of data signal lines and the plurality of sensing signal lines are configured to intersect with the plurality of scan signal lines and the plurality of sensing control lines.

[0086] In some exemplary embodiments, the timing controller 10 may provide a grayscale value and a control signal suitable for the specifications of the data driver to the data driver 20. The data driver 20 may generate a data signal to be provided to the data signal lines DL1 to DLn using the grayscale value and the control signal received from the timing controller 10. For example, the data driver 20 may sample the grayscale value using a clock signal, and apply a data signal corresponding to the grayscale value to the data signal lines DL1 to DLn in units of sub-pixel rows. In some examples, after the control device 101 determines that the brightness of the static picture needs to be attenuated, the timing controller 10 may provide the updated grayscale value and the control signal to the data driver 20 so that the data driver 20 generates a data signal provided to the data signal line to improve the display brightness of the display picture.

[0087] In some exemplary embodiments, the timing controller 10 may provide a clock signal, a scan start signal, a sensing start signal, etc. suitable for the specifications of the gate driver 30 to the gate driver 30. The gate driver 30 may generate a scan signal to be provided to the scan signal lines GL1 to GLm and a sensing control signal to be provided to the sensing control lines SL1 to SLm by receiving the clock signal, the scan start signal, the sensing start signal, etc. from the timing controller 10. For example, the gate driver 30 may include: a scan drive circuit and a sensing drive circuit. The scan drive circuit may sequentially provide a scan signal having an on-level pulse to the scan signal lines GL1 to GLm. The sensing drive circuit may sequentially provide a sensing control signal having an on-level pulse to the sensing control lines SL1 to SLm. For example, the scan drive circuit may be constructed in the form of a shift register, and may generate a scan signal in a manner that sequentially transmits a scan start signal provided in the form of an on-level pulse to a next-level circuit under the control of a scan clock signal. The sensing driving circuit may be configured in the form of a shift register, and may generate a sensing control signal in such a manner that a sensing control signal provided in the form of an on-level pulse is sequentially transmitted to a next stage circuit under the control of a sensing clock signal.

[0088] In some exemplary embodiments, the data driver 20 may acquire sensing data through the sensing signal line and transmit the sensing data to the timing controller 10. The timing controller 10 may determine compensation data of the electrical characteristic parameters of the driving transistor according to the sensing data and store the compensation data.

[0089] In some exemplary embodiments, the scanning driving circuit and the sensing driving circuit included in the gate driver 30 may be located on opposite sides of the pixel array 12 (e.g., the left side and the right side of the pixel array). However, this embodiment is not limited to this. For example, gate drivers are provided on opposite sides of the pixel array to achieve bilateral driving of sub-pixels.

[0090] In some exemplary embodiments, the gate driver 30 may be formed by using an integrated circuit, or may be directly formed on a substrate of the display panel during a process of preparing a pixel circuit of a sub-pixel. However, this embodiment is not limited thereto.

[0091] In some exemplary embodiments, each sub-pixel PXij within the pixel array 12 may be electrically connected to corresponding data signal lines, scan signal lines, sensing control lines, and sensing signal lines, and i and j may be natural numbers. The sub-pixel PXij may refer to a sub-pixel in which a transistor is electrically connected to the i-th scan signal line and electrically connected to the j-th data signal line.

[0092] In some exemplary embodiments, a sub-pixel includes a pixel circuit and a light emitting element. Figure 4 is a schematic diagram of a pixel circuit according to at least one embodiment of the present disclosure. Figure 4 The pixel circuit shown is a 3T1C structure. This embodiment does not limit the pixel circuit. For example, the pixel circuit can be a 4T1C, 5T1C, 5T2C, 6T1C or 7T1C structure.

[0093] In some exemplary embodiments, Figure 4 As shown, the pixel circuit may include: an input transistor T1, a driving transistor DTFT, a sensing transistor T2, and a storage capacitor C1. The control electrode of the input transistor T1 is electrically connected to the scanning signal line GL, the first electrode of the input transistor T1 is electrically connected to the data signal line DL, and the second electrode of the input transistor T1 is electrically connected to the control electrode of the driving transistor DTFT. The first electrode of the driving transistor DTFT is electrically connected to the first power line ELVDD, and the second electrode of the driving transistor DTFT is electrically connected to the first electrode of the light-emitting element OLED. The second electrode of the light-emitting element OLED is electrically connected to the second power line ELVSS. The first electrode of the storage capacitor C1 is electrically connected to the control electrode of the driving transistor DTFT, and the second electrode of the storage capacitor C1 is electrically connected to the second electrode of the driving transistor DTFT. The control electrode of the sensing transistor T2 is electrically connected to the sensing control line SL, the first electrode of the sensing transistor T2 is electrically connected to the second electrode of the driving transistor DTFT, and the second electrode of the sensing transistor T2 is electrically connected to the sensing signal line RL.

[0094] In some exemplary embodiments, the input transistor T1 is configured to receive the data signal transmitted by the data signal line DL under the control of the scan signal line GL, so that the control electrode of the driving transistor DTFT receives the data signal. The driving transistor DTFT is configured to generate a corresponding current at the second electrode under the control of the data signal received by its control electrode. The sensing transistor T2 is configured to extract the threshold voltage Vth and mobility of the driving transistor DTFT in response to the compensation timing to compensate for the threshold voltage Vth. The storage capacitor C1 is configured to store the potential of the control electrode of the driving transistor DTFT.

[0095] In some exemplary embodiments, the scanning transistor T1, the driving transistor DTFT and the sensing transistor T2 may be low-temperature polysilicon thin film transistors, or may be oxide thin film transistors, or may be low-temperature polysilicon thin film transistors and oxide thin film transistors. The active layer of the low-temperature polysilicon thin film transistor adopts low-temperature polysilicon (LowTemperature Poly-Silicon, referred to as LTPS), and the active layer of the oxide thin film transistor adopts oxide (Oxide). Low-temperature polysilicon thin film transistors have the advantages of high mobility and fast charging, and oxide thin film transistors have the advantages of low leakage current. In some exemplary embodiments, low-temperature polysilicon thin film transistors and oxide thin film transistors can be integrated on a display substrate to form a low-temperature polycrystalline oxide (Low Temperature Polycrystalline Oxide, referred to as LTPO) display substrate, which can take advantage of the advantages of both, can achieve high resolution (Pixel Per Inch, referred to as PPI), low-frequency driving, can reduce power consumption, and can improve display quality. However, this embodiment is not limited to this.

[0096] In some exemplary embodiments, the light emitting element may be an organic light emitting diode (OLED), including a first electrode (anode), an organic light emitting layer, and a second electrode (cathode) stacked together. However, this embodiment is not limited thereto.

[0097] Figure 5 is a graph showing the relationship between the APL and the static picture judgment duration of at least one embodiment of the present disclosure. Figure 5 As shown, the relationship between the APL of the full-screen static picture and the static picture judgment time can be shown as a curve FBC. Among them, point F is the intersection point where the APL is 0 and the static picture judgment time is a first value (for example, 60), point B is the intersection point where the APL is a first threshold (for example, 0.5) and the static picture judgment time is a first value, and point C is the intersection point where the APL is 1 and the static picture judgment time is a second value (for example, 10).

[0098] like Figure 5As shown, when the APL of the full-screen static image is less than or equal to 0.5, the static image judgment time can be about 60 seconds. For example, when the APL is less than or equal to 0.5, corresponding to the full-screen display of the low-power image, the static image judgment time can be set to 60 seconds.

[0099] like Figure 5 As shown, when the APL of the full-screen static picture is greater than 0.5 and less than or equal to 1, there is a linear relationship between the static picture judgment time and the APL, and the static picture judgment time decreases as the APL increases. As the APL increases from 0.5 to 1, the static picture judgment time decreases from 60s to 10s. For example, an APL greater than 0.5 corresponds to a full-screen display of a high-power picture, and the static picture judgment time can be set to gradually decrease from 60s. In some examples, when the APL of the full-screen static picture is greater than 0.5 and less than or equal to 1, the APL of the full-screen static picture and the static picture judgment time satisfy the following relationship: y=-100x+110, where x represents the APL and y represents the static picture judgment time.

[0100] In some exemplary embodiments, Figure 5 As shown, the relationship between the APL of the window static picture and the static picture judgment time can be shown as the curve EAB'C'. The relationship between the APL of the monochrome window static picture and the static picture judgment time can be shown as the curve EAB', and the relationship between the APL of the mixed color window static picture and the static picture judgment time can be shown as the curve B'C'. Among them, point E is the intersection point of APL being 0 and the static picture judgment time being the second value (for example, 10), point A is the intersection point of APL being the second threshold (for example, 0.05) and the static picture judgment time being the third value, B' is the intersection point of APL being the third threshold (for example, 0.5) and the static picture judgment time being the fourth value (for example, 60), and C' is the intersection point of APL being 1 and the static picture judgment time being the third value (for example, 10). In this example, the first threshold is equal to the third threshold, the third value is equal to the second value, and the fourth value is equal to the first value. As Figure 5 As shown, point B' coincides with point B, and point C' coincides with point C. However, this embodiment is not limited to this.

[0101] like Figure 5As shown, when the APL of the static picture in the window is less than or equal to 0.05, the static picture judgment time can be 10s. For example, APL is less than or equal to 0.05, corresponding to a monochrome static picture with a window of less than 10%. Assuming that the white display brightness is 800nit at this time, the static picture judgment time can be set to 10s. That is, the static picture with a display brightness of 800nit and a display window of less than 10% begins to decay in brightness after 10 seconds. The EA segment of the curve represents a display picture with a high brightness in a small window. By setting a lower static picture judgment time, it is beneficial to improve the short-term afterimage situation and reduce power consumption.

[0102] like Figure 5 As shown, when the APL of the static picture of the window increases from 0.05 to 0.5, the static picture judgment time can increase as the APL increases. For example, the APL corresponds to a monochrome picture of 10% to 100% of the window. Assuming APL = 0.5, the white display brightness is 200nit at this time, and the static picture judgment time can be adjusted to 60s. That is, the static picture with a display brightness of 200nit can start to decay in brightness after 60 seconds. In this example, the APL increases from 0.05 to 0.5, corresponding to the monochrome window increasing from 10% to 100%, so the static picture judgment time can be gradually increased to 60s. In some examples, when the APL of the static picture of the window is greater than 0.05 and less than or equal to 0.5, the APL of the static picture of the window and the static picture judgment time roughly satisfy the following relationship: y = 111x + 4.44, where x represents APL and y represents the static picture judgment time.

[0103] like Figure 5 As shown, when the APL of the static picture in the window increases from 0.5 to 1, the static picture judgment duration can decrease as the APL increases. For example, APL = 1 corresponds to a full-screen display of 255 grayscale mixed colors. At this time, the power consumption is relatively high. In order to reduce the power consumption of the full-screen display, the static picture judgment duration can be adjusted to 10s, that is, the static picture starts to decay in brightness after 10s. In some examples, when the APL of the static picture in the window is greater than 0.5 and less than or equal to 1, the APL of the static picture in the window and the static picture judgment duration roughly satisfy the following relationship: y = -100x + 110, where x represents the APL and y represents the static picture judgment duration.

[0104] Depend on Figure 5 It can be seen that when the APL of the full-screen static image is in [0, 0.5], y = 60;

[0105] When the APL of the full-screen static image is at (0.5, 1], y=-100x+110.

[0106] When the APL of the monochrome window static picture is in [0, 0.05], y = 10;

[0107] When the APL of the monochrome window static picture is (0.05, 0.5], y = 111x + 4.44;

[0108] When the APL of the static image in the color mixing window is at (0.5, 1], y=-100x+110.

[0109] Wherein, x represents the APL of the static picture, and y represents the judgment duration of the static picture.

[0110] Figure 6 FIG. 4 is another relationship curve diagram of the APL and the static picture judgment duration of at least one embodiment of the present disclosure. In some exemplary embodiments, Figure 6 As shown, the relationship between the APL of the full-screen static image and the static image judgment duration is shown as the curve FBC. For an explanation of the curve FBC, please refer to Figure 5 The embodiments shown are not described in detail here.

[0111] In some exemplary embodiments, Figure 6 As shown, the relationship between the APL of the monochrome window static picture and the static picture judgment time can be shown as the curve EAB', and the relationship between the APL of the mixed color window static picture and the static picture judgment time can be shown as the curve EAC'. In this example, point B and point B' coincide, and point C and point C' coincide. However, this embodiment is not limited to this.

[0112] Depend on Figure 6 It can be seen that when the APL of the full-screen static image is in [0, 0.5], y = 60;

[0113] When the APL of the full-screen static image is at (0.5, 1], y=-100x+110.

[0114] When the APL of the monochrome window static picture is in [0, 0.05], y = 10;

[0115] When the APL of the monochrome window static picture is (0.05, 0.5], y = 111x + 4.44;

[0116] When the APL of the static image in the color mixing window is in [0, 1], y=10.

[0117] Wherein, x represents the APL of the static picture, and y represents the judgment duration of the static picture.

[0118] In this exemplary embodiment, for static images in a monochrome highlight window and static images in a mixed color window, a shorter static image judgment time may be adjusted to prevent short-term afterimages from being generated in local high power consumption images.

[0119] Figure 7 This is an example diagram of a full-screen static image according to at least one embodiment of the present disclosure. Figure 8 This is an example diagram of a monochrome window static screen according to at least one embodiment of the present disclosure. Fig. 9 This is an example diagram of a static screen of a color mixing window according to at least one embodiment of the present disclosure. Figure 7 The picture shown is a 100% window, 255 grayscale white static picture. Figure 7 The full screen still picture shown has an APL of approximately 0.5. Figure 8 The picture shows a 25% window, 255 grayscale white static picture. Figure 8 The monochrome windowed still picture shown has an APL of approximately 0.125. Fig. 9 Shown is a mixed color still picture of a 50% window. Fig. 9 The picture shown is illustrated by taking a grayscale picture as an example. In some examples, Fig. 9 The window screen shown is a color screen.

[0120] In this exemplary embodiment, the static image judgment time can be flexibly adjusted for different static images, thereby effectively solving the short-term afterimage caused by high-brightness static images and achieving the purpose of reducing power consumption, thereby improving the display quality of display products to meet customer needs and make display products more competitive.

[0121] Fig.10 The figure is a brightness attenuation curve diagram of different static images according to at least one embodiment of the present disclosure. Fig.10 It is a schematic diagram showing the measurement results of a static picture of a display product using the control device of this embodiment.

[0122] Fig.10 The corresponding brightness data can be shown in Table 1.

[0123] Table 1

[0124]

[0125]

[0126] exist Fig.10 In Table 1, curve 1 represents the brightness attenuation curve of a white static picture with a 10% window and a grayscale of 255, curve 2 represents the brightness attenuation curve of a white static picture with a 50% window and a grayscale of 255, curve 3 represents the brightness attenuation curve of a white static picture with a full screen display and a grayscale of 255, curve 4 represents the brightness attenuation curve of a white static picture with a full screen display and a grayscale of 127, curve 5 represents the brightness attenuation curve of a red and green mixed color static picture with a full screen display and a grayscale of 255, and curve 6 represents the brightness attenuation curve of a red static picture with a full screen display and a grayscale of 255.

[0127] In some exemplary embodiments, after determining that the current display picture is a static picture, the processor of the control device can obtain the full-screen brightness by accumulating the brightness of all pixels in the display area, and then use the full-screen brightness to calculate the APL of the static picture. For example, APL is the ratio of the full-screen brightness to a constant, and the range of APL is between 0 and 1. In addition, it can be determined whether the static picture is a full-screen picture and whether it is a monochrome picture based on the number of sub-pixels with grayscale not 0 in the static picture and the display color. Subsequently, the corresponding static picture judgment duration can be found from the time comparison table according to the type of the static picture and the APL. Subsequently, the static picture judgment duration can be used to determine whether to perform brightness attenuation on the static picture.

[0128] like Fig.10 As can be seen from Table 1, the static picture corresponding to Curve 1 begins to decay in brightness after about 10 seconds, the static picture corresponding to Curve 2 begins to decay in brightness after about 20 seconds, the static pictures corresponding to Curves 3 to 5 begin to decay in brightness after about 60 seconds, and the static picture corresponding to Curve 6 begins to decay in brightness after about 10 seconds. It can be seen that the static picture judgment duration of different types of static pictures is different, which makes the starting time point of brightness decay different, which is conducive to shortening the overall time of brightness decay of static pictures, thereby effectively avoiding the short-term afterimage caused by high-brightness static pictures, and can reduce power consumption, thereby improving the display effect of display products.

[0129] Fig.11 FIG. 2 is another schematic diagram of a display device according to at least one embodiment of the present disclosure. Fig.11 As shown, the display device of this exemplary embodiment includes: a pixel array 12 and a panel driver. The panel driver is configured to drive the pixel array 12. The panel driver may include: a timing controller 10, a data driver 20, a gate driver 30 and a memory 40. The processor 102 of the control device provided in this embodiment can be integrated in the timing controller 10, and the memory 40 can be set independently of the timing controller 10. However, this embodiment is not limited to this. The remaining structure of the display device of this embodiment can refer to the description of the aforementioned embodiment, so it will not be repeated here.

[0130] Fig.12 This is a flow chart of a driving method of a control device provided by at least one embodiment of the present disclosure. Fig.12 As shown, the driving method of this embodiment includes the following steps:

[0131] S1, determining whether the displayed image is a static image;

[0132] S2. When it is determined that the displayed picture is a static picture, according to the average image level and type of the static picture, the corresponding static picture is searched from the stored time comparison table to determine the duration.

[0133] In some exemplary embodiments, the method may further include: determining whether the static picture remains static within the static picture determination time length; when it is determined that the static picture remains static for a time length that reaches the static picture determination time length, performing brightness attenuation on the static picture until the static picture no longer remains static. The relevant description of the driving method of the control device of this embodiment can refer to the description of the control device of the previous embodiment, so it is not repeated here.

[0134] In some exemplary embodiments, the processor of the control device may include a processing device such as a microcontroller unit (MCU) or a field programmable gate array (FPGA). The memory of the control device may store a time comparison table, and software programs and modules of application software, such as program instructions or modules corresponding to the method in the present embodiment. The processor executes multiple functional applications and data processing by running software programs and modules stored in the memory, such as implementing the method provided in the present embodiment. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may include a memory remotely arranged relative to the processor, and these remote memories may be connected to the control device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0135] In addition, at least one embodiment of the present disclosure further provides a non-transitory computer-readable storage medium storing a computer program, which implements the steps of the above method when executed.

[0136] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules or units in the disclosed methods above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules or units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0137] The above shows and describes the basic principles, main features and advantages of the present disclosure. The present disclosure is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, which all fall within the scope of the present disclosure to be protected.

Claims

1. A control device, comprising: A memory configured to store a time comparison table; A processor configured to determine whether the displayed picture is a static picture, and when it is determined that the displayed picture is a static picture, according to the average image level and type of the static picture, find the corresponding static picture from the time comparison table to determine the duration; The time comparison table stores a mapping relationship between an average image level of a full-screen static picture and a static picture judgment duration, and a mapping relationship between an average image level of a windowed static picture and a static picture judgment duration; The mapping relationship between the average image level of the full-screen static picture and the static picture judgment duration includes: When the average image level of the full-screen static image is less than or equal to the first threshold, the static image judgment duration is a first value; When the average image level of the full-screen static picture is greater than the first threshold, the static picture judgment duration is less than the first value and greater than or equal to the second value, wherein as the average image level of the full-screen static picture increases, the static picture judgment duration decreases.

2. The control device according to claim 1, wherein: The processor is also configured to determine whether the static picture remains static within the static picture judgment time length, and when it is determined that the static picture remains static for a period of time that reaches the static picture judgment time length, the brightness of the static picture is attenuated until the static picture no longer remains static.

3. The control device according to claim 1, wherein: The type of the static picture is one of the following: a full-screen picture, a monochrome window picture, and a mixed-color window picture.

4. The control device according to claim 1, characterized in that: The first threshold ranges from 0.4 to 0.

6.

5. The control device according to any one of claims 1 to 4, wherein: The mapping relationship between the average image level of the static picture in the window and the static picture judgment duration includes: When the window static picture is a monochrome window display picture, and the average image level of the window static picture is less than or equal to the second threshold, the static picture judgment duration is a third value; When the window static picture is a monochrome window display picture, and the average image level of the window static picture is greater than the second threshold and less than or equal to the third threshold, the static picture judgment time is greater than the third value and less than or equal to the fourth value, and as the average image level of the window static picture increases, the static picture judgment time increases; When the window static picture is a mixed color window display picture, and the average image level of the window static picture is greater than the third threshold, the static picture judgment time is greater than the third value and less than or equal to the fourth value, and as the average image level of the window static picture increases, the static picture judgment time decreases.

6. The control device according to claim 5, wherein: The range of the second threshold is less than or equal to 0.05, and the range of the third threshold is 0.4 to 0.

6.

7. The control device according to any one of claims 1 to 4, wherein: The mapping relationship between the average image level of the static picture in the window and the static picture judgment duration includes: When the window static picture is a monochrome window display picture, and the average image level of the window static picture is less than or equal to the fourth threshold, the static picture determination duration is a fifth value; When the window static picture is a monochrome window display picture, and the average image level of the window static picture is greater than the fourth threshold value and less than or equal to the fifth threshold value, the static picture judgment time length is greater than the fifth value and less than or equal to the sixth value, and as the average image level of the window static picture increases, the static picture judgment time length increases; When the static image of the window is a mixed-color window display image, the static image judgment duration is a seventh value, wherein the seventh value is less than the sixth value.

8. The control device according to claim 7, wherein: The range of the fourth threshold is less than or equal to 0.05, and the range of the fifth threshold is 0.4 to 0.

6.

9. The control device according to claim 1, wherein: The time comparison table stores the following mapping relationships: When the average image level of the full-screen static picture is in [0, 0.5], y = 60; When the average image level of the full-screen static picture is (0.5, 1], y = -100x + 110; When the average image level of the monochrome window static picture is in [0, 0.05], y = 10; When the average image level of the monochrome window static picture is (0.05, 0.5], y = 111x + 4.44; When the average image level of the static picture in the color mixing window is (0.5, 1], y = -100x + 110; Wherein, x represents the average image level of the static picture, and y represents the judgment duration of the static picture.

10. The control device according to claim 1, wherein: The time comparison table stores the following mapping relationships: When the average image level of the full-screen static picture is in [0, 0.5], y = 60; When the average image level of the full-screen static picture is (0.5, 1], y = -100x + 110; When the average image level of the monochrome window static picture is in [0, 0.05], y = 10; When the average image level of the monochrome window static picture is (0.05, 0.5], y = 111x + 4.44; When the average image level of the static picture in the color mixing window is in [0, 1], y = 10; Wherein, x represents the average image level of the static picture, and y represents the judgment duration of the static picture.

11. A method for driving a control device, comprising: Determine whether the displayed image is a static image; When it is determined that the displayed picture is a static picture, according to the average image level and type of the static picture, the corresponding static picture is searched from the stored time comparison table to determine the duration; The time comparison table stores a mapping relationship between an average image level of a full-screen static picture and a static picture judgment duration, and a mapping relationship between an average image level of a windowed static picture and a static picture judgment duration; The mapping relationship between the average image level of the full-screen static picture and the static picture judgment duration includes: When the average image level of the full-screen static image is less than or equal to the first threshold, the static image judgment duration is a first value; When the average image level of the full-screen static picture is greater than the first threshold, the static picture judgment duration is less than the first value and greater than or equal to the second value, wherein as the average image level of the full-screen static picture increases, the static picture judgment duration decreases.

12. The method according to claim 11, further comprising: Determining whether the static picture remains static within the static picture determination time length; When it is determined that the static image remains static for a period of time that reaches the static image determination period, the brightness of the static image is attenuated until the static image no longer remains static.

13. A display device comprising the control device according to any one of claims 1 to 10.

14. The display device according to claim 13, wherein: The control device is integrated in the timing controller; or, the processor of the control device is integrated in the timing controller, and the memory of the control device is set independently of the timing controller.

15. The display device according to claim 14, further comprising: Data drives; The data driver is configured to generate a data signal supplied to a data signal line using a grayscale value and a control signal received from the timing controller.

16. The display device according to claim 14, further comprising: Gate driver; The gate driver is configured to generate a scan signal supplied to the scan signal line and a sensing control signal supplied to the sensing control line using a clock signal and a start signal received from the timing controller.

17. The display device according to claim 14, further comprising: Pixel array; The pixel array includes a plurality of sub-pixels, at least one of which includes a pixel circuit and a light-emitting element; The pixel circuit comprises: an input transistor, a driving transistor, a sensing transistor and a storage capacitor; The control electrode of the input transistor is electrically connected to the scanning signal line, the first electrode of the input transistor is electrically connected to the data signal line, and the second electrode of the input transistor is electrically connected to the control electrode of the driving transistor; The first electrode of the driving transistor is electrically connected to the first power line, and the second electrode of the driving transistor is electrically connected to the first electrode of the light emitting element; The control electrode of the sensing transistor is electrically connected to the sensing control line, the first electrode of the sensing transistor is electrically connected to the second electrode of the driving transistor, and the second electrode of the sensing transistor is electrically connected to the sensing signal line; The first electrode of the storage capacitor is electrically connected to the control electrode of the driving transistor, and the second electrode of the storage capacitor is electrically connected to the second electrode of the driving transistor; The second electrode of the light emitting element is electrically connected to the second power line.

18. A non-transitory computer-readable storage medium storing a computer program, wherein the computer program implements the method according to any one of claims 11 to 12 when executed.

Images