Display control method and device of display panel and display device

Abstract

The invention relates to a display control method and device of a display panel and a display device. A display area of the display panel comprises a plurality of brightness detection areas; the method comprises the following steps: acquiring a brightness parameter of each brightness detection area under a preset gray scale; determining a screen-off display area according to the brightness parameter of each brightness detection area; the screen-off display area is a brightness low-attenuation area in the display area, and the brightness low-attenuation area is overlapped with at least one brightness detection area; and in the screen-off mode, controlling the screen-off display area to perform screen-off display. By adopting the method, the brightness low-attenuation area with small brightness life attenuation in the display area can be selected for screen-off display, so that the brightness life of the pixels in the area is reduced in the screen-off display process. Meanwhile, the areas with high brightness decay are enabled to stop displaying in a screen-off mode, and the aging speed of pixels in the areas is reduced. Therefore, the brightness service life of each pixel in the display area is more balanced, and the brightness uniformity of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display control method and device for a display panel, and a display device. Background Art

[0002] With the continuous development of display technology, OLED (Organic Light Emitting Diode) display panels are widely used in various electronic devices due to their advantages such as low power consumption, improved brightness performance and increased response speed.

[0003] However, during long-term use, due to various factors such as material properties, the brightness decay speed of each pixel in the display area is not consistent, resulting in low brightness uniformity of the display panel. Summary of the Invention

[0004] Based on this, it is necessary to provide a display control method and device for a display panel, and a display device, in order to solve the problem of low brightness uniformity of the display panel.

[0005] In a first aspect, an embodiment of the present application provides a display control method for a display panel, wherein a display area of ​​the display panel includes a plurality of brightness detection areas; the method comprises:

[0006] Obtaining brightness parameters of each brightness detection area at a preset grayscale;

[0007] Determine a screen-off display area according to the brightness parameters of each brightness detection area; the screen-off display area is a low brightness attenuation area in the display area, and the low brightness attenuation area overlaps with at least one of the brightness detection areas;

[0008] In the screen-off mode, the screen-off display area is controlled to perform screen-off display.

[0009] In a second aspect, an embodiment of the present application further provides a display control device for a display panel, wherein a display area of ​​the display panel includes a plurality of brightness detection areas; the device includes:

[0010] A brightness detection module, configured to obtain brightness parameters of each brightness detection area at a preset grayscale;

[0011] an area determination module, configured to determine an off-screen display area according to the brightness parameters of each of the brightness detection areas; the off-screen display area being an area with low brightness attenuation in the display area, the area with low brightness attenuation overlapping with at least one of the brightness detection areas;

[0012] The display control module is used to control the screen-off display area to perform screen-off display in the screen-off mode.

[0013] In a third aspect, an embodiment of the present application further provides a display device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the display control method for the display panel provided in the first aspect are implemented.

[0014] An embodiment of the present application provides a display control method for a display panel. The display panel's display area includes multiple brightness detection areas. The display control method includes obtaining brightness parameters for each brightness detection area at a preset grayscale; determining an off-screen display area based on the brightness parameters of each brightness detection area; the off-screen display area is a low-brightness attenuation region in the display area, which overlaps with at least one brightness detection area; and controlling the off-screen display area to perform an off-screen display in an off-screen mode. Thus, a low-brightness attenuation region with a low brightness lifetime attenuation in the display area is selected for an always-on display (AOD), reducing the brightness lifetime of pixels in this region during the off-screen display process. Simultaneously, regions with high brightness attenuation are disabled in the off-screen mode, reducing the aging rate of pixels in these regions. This results in a more balanced brightness lifetime across pixels in the display area, thereby improving the brightness uniformity of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic flow chart of a display control method for a display panel provided in an embodiment of the present application;

[0016] Figure 2 A schematic diagram of a process for determining an off-screen display area based on brightness parameters of each brightness detection area provided in an embodiment of the present application;

[0017] Figure 3 A method for dividing brightness detection areas of a display panel provided in an embodiment of the present application;

[0018] Figure 4 A schematic diagram of another process for determining the screen-off display area based on the brightness parameters of each brightness detection area provided in an embodiment of the present application;

[0019] Figure 5 Based on Figure 3 The brightness variation curve of the display partition of the display panel is obtained by long-term lighting detection;

[0020] Figure 6 Based on Figure 3 The brightness variation curve of the display panel shown in the figure is obtained by long-term lighting detection of the display partition combined with the screen-off display;

[0021] Figure 7 Based on Figure 3The display partition of the display panel shown is combined with the display control method of the embodiment of the present application, and the brightness change curve obtained by long-term lighting detection;

[0022] Figure 8 A schematic diagram of the locations of detection points of a display panel provided in an embodiment of the present application;

[0023] Figure 9 A schematic diagram of another process for determining an off-screen display area based on brightness parameters of each brightness detection area provided in an embodiment of the present application;

[0024] Figure 10 A schematic diagram of a target shape of a partition that a display panel provided in an embodiment of the present application should display when the screen is off;

[0025] Figure 11 A schematic diagram of a target shape of a partition that should be displayed when the screen is off, provided by another embodiment of the present application;

[0026] Figure 12 A schematic diagram of a target shape of a partition that a display panel should display when the screen is off, provided in an embodiment of the present application;

[0027] Figure 13 A structural block diagram of a display control device for a display panel provided in an embodiment of the present application;

[0028] Figure 14 This is a diagram of the internal structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0031] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, when a layer is referred to as being "under" another layer, it can be directly under or one or more intervening elements may also be present. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or one or more intervening elements may also be present.

[0032] In the case of using “including,” “having,” and “comprising” described herein, another component may be added unless a clear limiting term such as “only,” “consisting of,” etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as having one number.

[0033] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this application.

[0034] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, and is not limited here.

[0035] Furthermore, in the specification, the phrase “planar distribution diagram” refers to a drawing when the target portion is viewed from above, and the phrase “cross-sectional diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0036] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0037] As described in the background technology section, display panels in related technologies are prone to low brightness uniformity during long-term use. The inventors discovered that the reason for this phenomenon is that when an OLED display panel is used, it is affected by various factors such as its own material properties, and each pixel in the display area will gradually age with the extension of use. This is manifested as the brightness at the same grayscale value gradually decaying with the extension of use. However, the brightness decay rate of each pixel is not consistent. Pixels with different decay rates will have different display brightness, resulting in brightness uniformity problems in the display panel.

[0038] Based on the above technical problems, the inventors discovered that by maintaining the display in areas with low brightness lifetime decay (i.e., slow decay) during the screen-off display phase, the usability of these areas can be increased, causing their brightness lifetime to decrease during the screen-off display process, thereby aligning the display brightness with areas with high brightness lifetime decay (i.e., fast decay), thereby improving display brightness uniformity. Based on this, the inventors further developed the technical solutions of the embodiments of the present application. Specifically, the display panel provided in the embodiments of the present application includes a display area comprising multiple brightness detection areas; a display control method for the display panel includes: obtaining brightness parameters of each brightness detection area at a preset grayscale; determining an off-screen display area based on the brightness parameters of each brightness detection area; the off-screen display area being a low brightness decay area in the display area, the low brightness decay area overlapping at least one brightness detection area; and controlling the off-screen display area to perform screen-off display in screen-off mode. Using this technical solution, by selecting low brightness decay areas in the display area with low brightness lifetime decay for screen-off display (AOD), the brightness lifetime of pixels in these areas is reduced during screen-off display. Simultaneously, areas with high brightness decay are disabled in screen-off mode, reducing the aging rate of pixels in these areas. Thus, the brightness life of pixels in the display area can be made more balanced, thereby improving the brightness uniformity of the display panel.

[0039] The above is the core concept of this application. The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0040] The display control method provided in an embodiment of the present application is used for a display panel. The display area of ​​the display panel includes multiple pixels, each of which is connected to a driver module of the display panel. The driver module is used to transmit display data to the pixels and control the display state of each pixel to achieve image display. The display area includes multiple brightness detection areas, each of which includes one or more pixels.

[0041] In an exemplary embodiment, taking the method applied to a driving module of a display panel as an example, Figure 1 As shown, the display control method of the display panel includes the following steps 102 to 106. Among them:

[0042] Step 102: Obtain the brightness parameters of each brightness detection area at a preset grayscale.

[0043] Specifically, the driver module sends a drive signal to each brightness detection zone or the pixels in the entire display area according to a preset grayscale, causing these pixels to display at the preset grayscale. During this process, the driver module obtains the brightness detection value of each brightness detection zone through a preset software module or brightness detection device, thereby obtaining the brightness parameters corresponding to each brightness detection zone at the preset grayscale. These brightness parameters can reflect the actual brightness performance of each brightness detection zone at the current grayscale, providing data support for subsequent control.

[0044] The preset grayscale can be selected based on actual conditions. For example, if the display panel data storage bit number is 8 bits, the grayscale value ranges from 0 to 255, and the preset grayscale can be any grayscale value between 0 and 255. For example, the preset grayscale of 255 is selected to detect the normal brightness display state. Of course, the display panel data storage bit number can also be other values, such as 12 bits, 16 bits, etc.

[0045] Step 104: determine the screen-off display area according to the brightness parameters of each brightness detection area.

[0046] Among them, the screen-off display area is a low-brightness attenuation area in the display area, and the low-brightness attenuation area overlaps with at least one brightness detection area.

[0047] Since pixels age over time, i.e., the brightness at the same grayscale value decreases over time, in this application, after obtaining the brightness parameters of each brightness detection zone, these parameters are analyzed to obtain the brightness attenuation of each brightness detection zone, and then the low brightness attenuation area is determined based on the brightness attenuation of these brightness detection zones.

[0048] Specifically, the low brightness attenuation area completely or partially overlaps with the brightness detection area with the minimum brightness attenuation, thereby ensuring that the brightness attenuation of the off-screen display area is small, that is, the brightness lifetime attenuation is small. The overlap between the low brightness attenuation area and the brightness detection area with the minimum brightness attenuation can be determined based on the off-screen display requirements in actual applications. In some embodiments, while the low brightness attenuation area overlaps with the brightness detection area with the minimum brightness attenuation, it can also overlap with other brightness detection areas depending on actual circumstances. For example, the low brightness attenuation area may also overlap with other brightness detection areas adjacent to the brightness detection area.

[0049] Step 106: In the screen-off mode, control the screen-off display area to perform screen-off display.

[0050] When the display panel enters the screen-off mode, the driving module will send corresponding driving signals to the pixels in the screen-off display area according to the pre-set screen-off display content to control these pixels to display light, thereby increasing the usage time of the pixels in this area and reducing the brightness life during the screen-off display process.

[0051] The display control method for the display panel described above obtains the brightness parameters of each brightness detection zone at a preset grayscale; determines an off-screen display zone based on the brightness parameters of each brightness detection zone; the off-screen display zone is a low-brightness attenuation region in the display area, which overlaps with at least one brightness detection zone; and in off-screen mode, controls the off-screen display zone to perform an off-screen display. Thus, by selecting a low-brightness attenuation region with a small brightness lifetime attenuation in the display area for off-screen display, the brightness lifetime of the pixels in this region can be reduced during off-screen display. Simultaneously, by stopping the display of regions with high brightness attenuation in off-screen mode, the aging rate of the pixels in these regions can be reduced. This results in a more balanced brightness lifetime for each pixel in the display area, smaller brightness differences between pixels, and thus improved brightness uniformity of the display panel and a better user experience.

[0052] Furthermore, in related technologies, the off-screen display area is typically a designated fixed area. When information is continuously displayed in this fixed area in off-screen mode, the pixels remain in operation for a long period of time, accelerating the brightness decay process in this area. Over time, this can cause brightness reduction and uneven display brightness in this fixed off-screen display area. In this embodiment, by selecting a low-brightness decay area within the display area with minimal brightness lifetime decay for off-screen display, this problem can be effectively avoided, improving the brightness uniformity of the display panel and enhancing the user experience.

[0053] In some embodiments, the brightness parameter of each brightness detection area at a preset grayscale includes the current brightness value of each brightness detection area at the preset grayscale; step 104 includes the following steps:

[0054] According to the current brightness value of each brightness detection area under the preset gray scale, the low brightness attenuation area in the display area is determined, and the low brightness attenuation area is used as the screen-off display area.

[0055] The current brightness value of the brightness detection area overlapping the low brightness attenuation area is higher than the current brightness values ​​of other brightness detection areas.

[0056] Because pixel aging causes a decrease in brightness at the same grayscale, the current brightness value can reflect the lifetime decay of the pixel's brightness. In this embodiment, when the current brightness value of each brightness detection zone at a preset grayscale is obtained, the current brightness values ​​of all brightness detection zones are processed (for example, sorted) to intuitively determine the areas with higher current brightness values ​​among all brightness detection zones. It is assumed that areas with higher current brightness values ​​have shorter lifetime decay.

[0057] By determining the low brightness attenuation area obtained based on the current brightness value as the screen-off display area, and performing the screen-off display in the screen-off mode, it helps to reduce the brightness life of the pixels in this area during the screen-off display process, thereby making the brightness life of each pixel in the display area more balanced, thereby improving display uniformity.

[0058] In some embodiments, the brightness parameter of each brightness detection area at a preset grayscale includes a starting brightness value and a current brightness value of each brightness detection area at the preset grayscale. Figure 2 As shown, step 104 includes the following steps 202 and 204.

[0059] Step 202 : determining a brightness attenuation parameter of the brightness detection area according to the initial brightness value and the current brightness value of the brightness detection area at a preset grayscale.

[0060] The initial brightness value can be the brightness value of the brightness detection area at a preset grayscale when it is first used, has been used for a short time, or has a low degree of pixel aging. The initial brightness value can reflect the brightness performance of the brightness detection area in its initial state. The current brightness value is the brightness value obtained at the same preset grayscale again after the display panel has been used for a certain period of time.

[0061] After obtaining the starting brightness value and current brightness value corresponding to each brightness detection zone, the brightness attenuation parameter of each brightness detection zone is calculated. The brightness attenuation parameter is used to characterize the brightness attenuation state (such as attenuation degree and attenuation speed) of the brightness detection zone.

[0062] Step 204: determine a low brightness attenuation area in the display area according to the brightness attenuation parameters of each brightness detection area, and use the low brightness attenuation area as the screen-off display area.

[0063] There is no single implementation method for step 204. As an example, the driver module processes (e.g., sorts) the brightness decay parameters of all brightness detection zones to select the brightness detection zone with the lowest brightness lifetime decay among all brightness detection zones, and determines the screen-off display zone based on the brightness detection zone with the lowest brightness lifetime decay.

[0064] In other embodiments, the driver module can compare the brightness attenuation parameters of all brightness detection areas with a preset brightness attenuation threshold, screen out brightness detection areas with brightness attenuation parameters less than the threshold, and use these brightness detection areas as potential candidate areas for forming low-brightness attenuation areas. Then, based on factors such as the display size and shape required for the off-screen display, the most matching brightness detection area is selected from these candidate areas, and the final low-brightness attenuation area is determined. For example, if the off-screen display needs to display rectangular information of a specific size, the driver module will select an area from the candidate areas that can be combined into the rectangle and cover as many pixels as possible as the low-brightness attenuation area.

[0065] In this embodiment, the starting brightness value and current brightness value of a brightness detection zone at a preset grayscale can be used to determine the brightness decay parameter of that zone, and thus the brightness lifetime decay state of that zone. By comparing the brightness decay states of each brightness detection zone, the area with the lowest brightness lifetime decay can be used for screen-off display, thereby ensuring that its brightness state is more balanced with that of other areas.

[0066] The method for determining the brightness attenuation parameter of the brightness detection area can be flexibly selected according to actual conditions. In some embodiments, step 202 may include the following steps:

[0067] The difference between the current brightness value and the initial brightness value of the brightness detection area at the preset gray scale is used as the brightness attenuation parameter of the brightness detection area at the preset gray scale.

[0068] The screen-off display area overlaps with one or more brightness detection areas with the smallest difference values.

[0069] It can be understood that the difference between the current brightness value and the starting brightness value can accurately reflect the brightness decay state of the brightness detection area. Because each brightness detection area is detected at the same time, the difference value can also accurately reflect the brightness decay rate of the brightness detection area. The larger the absolute value of the difference value, the faster the decay rate.

[0070] Since the screen-off display area overlaps with one or more brightness detection areas with the smallest difference value, and a small difference value means a small brightness life decay and a low degree of pixel aging, the usage time of this area increases when the screen is off, and its pixel aging degree and brightness decay status are closer to those of other areas, resulting in a better display effect.

[0071] In some other embodiments, step 202 may include the following steps:

[0072] The ratio of the current brightness value to the starting brightness value is used as the brightness attenuation parameter.

[0073] In this embodiment, the ratio of the current brightness value to the initial brightness value can be understood as the brightness degradation rate. Using this ratio as a brightness attenuation parameter can intuitively reflect the brightness attenuation state of each brightness detection area.

[0074] There is no single way to determine the brightness detection area. In some embodiments, Figure 3 As shown, the display area is divided into multiple independent display partitions (only some of the display partitions are shown in the figure), each of which serves as a brightness detection area. The sizes of the display partitions are not limited and can be the same or different according to actual needs. As an example, the display partitions are the same size, and the display partitions are combined to form a complete display area.

[0075] Furthermore, if Figure 4 As shown, step 104 includes the following steps 302 and 304.

[0076] Step 302: Determine the brightness attenuation degree of each display partition according to the brightness parameter of each display partition.

[0077] Among them, the method for determining the degree of brightness attenuation of each display partition is relatively flexible. In some embodiments, the degree of brightness attenuation can be determined based on the current brightness value of each display partition. For example, it can be considered that the larger the current brightness value, the lower the degree of pixel aging in the display partition, and the smaller its brightness attenuation. In other embodiments, the degree of brightness attenuation can be determined based on the brightness attenuation parameters of each display partition, and the brightness attenuation parameters can be determined by the current brightness value and the starting brightness value with reference to the above embodiment. Specifically, the greater the difference between the current brightness value and the starting brightness value, the greater the pixel brightness reduction, that is, the greater the brightness attenuation; or the smaller the brightness degradation rate, the less the current brightness is retained relative to the starting brightness, which means that the brightness is reduced more, that is, the greater the brightness attenuation.

[0078] Step 304: Use the display partition with the lowest brightness attenuation as the screen-off display area.

[0079] Since the pixel aging degree of the display partition with low brightness attenuation is relatively light, performing screen-off display in this area can increase the usage time of the pixels in this area during the screen-off display process, avoiding the use of a fixed area that causes the brightness to decay too quickly.

[0080] In this embodiment, the entire display area is divided into display zones, the brightness decay of each zone is detected, and the areas with the least brightness lifetime decay are selected for screen-off display control. This ensures that the brightness lifetime of pixels in the screen-off display zone is consumed normally during the screen-off display process. At the same time, areas with high brightness decay are deactivated in screen-off mode, effectively reducing the aging rate of pixels in these areas. This results in a more balanced brightness lifetime of pixels across each display zone, effectively improving the brightness uniformity of the display panel and providing users with a superior visual experience.

[0081] To better understand this embodiment, the brightness parameters of each display partition at a preset grayscale include the current brightness value of each display partition at the preset grayscale as an example. The larger the current brightness value, the smaller the brightness attenuation. Figure 3 In the embodiment shown in , it is assumed that the display partition filled with red represents the display partition with the highest current brightness value, the display partition filled with blue represents the display partition with higher brightness, and the other white areas represent areas with normal brightness.

[0082] Please refer to Figure 5 、 Figure 6 、 Figure 7 , Figure 5-Figure 7 Yes Figure 3 The brightness variation curve obtained by performing brightness life span detection in the embodiment shown in the figure is as follows: the red line corresponds to the display partition filled with red, and the blue line corresponds to the display partition filled with blue. Figure 5 This is the brightness change of the display partition filled with red and the display partition filled with blue in the long-term lighting state when the control method of the embodiment of the present application is not adopted. Figure 6 When the display partition filled with red is used as the fixed screen-off display area, the brightness changes of the two display partitions when they are lit for a long time. Figure 7 The control method of the embodiment of the present application is used, when Figure 5 When there is a brightness difference in the dashed box, the display partition filled in red is determined to be the off-screen display area, and the brightness of the two partitions changes over time. It can be seen that by adopting the control method of the embodiment of the present application, after combining the area with the highest brightness value with the AOD, the brightness value of this area gradually tends to be basically consistent with the brightness of other areas when the screen is illuminated for a long time, which is conducive to improving the uniformity within the surface.

[0083] In other embodiments, the brightness detection area can be flexibly adjusted according to the brightness detection requirements. Figure 8As shown, when performing brightness detection, if the 13-point detection method is used (this detection method usually selects 13 representative detection points on the display panel to measure the brightness), the brightness detection area can be divided according to the distribution of these 13 detection points. Specifically, the precise positions of the 13 detection points in the display area can be determined first, and then these detection points can be directly used as brightness detection areas, or a certain range can be expanded based on these points to form a brightness detection area. In actual implementation, a detection method with 135 points or other numbers of points can also be used. This method of dividing the brightness detection area based on the point detection method can more accurately perform brightness detection on key parts of the display panel.

[0084] It should be noted that no matter which method is used to determine the brightness detection area, the shape of each brightness detection area does not need to be limited, and can be a regular rectangle, square, or other shapes.

[0085] In some embodiments, as Figure 9 As shown, step 104 includes the following steps 402 and 404.

[0086] Step 402: Determine the parameters of the screen-off display area.

[0087] The parameters of the screen-off display area include at least the target shape of the screen-off display area. The target shape can be a shape pre-stored in the driving module, or a custom shape set by the user based on personalized needs. For example, the target shape can be Figure 10 、 Figure 11 、 Figure 12 The rectangle, cloud and heart shapes shown can also be other shapes.

[0088] The method for determining the target shape for the screen-off display area is relatively flexible. If the user explicitly specifies a shape, it will be used as the target shape, meeting the user's personalized requirements for the screen-off display. If the user does not specify a shape, a default shape from pre-stored shapes can be selected as the target shape, or a target shape can be matched based on brightness parameters. For example, based on the brightness attenuation of different brightness detection zones, a shape suitable for displaying specific content can be analyzed and recommended as the target shape.

[0089] Step 404 : determining the screen-off display area according to the brightness parameters of each brightness detection area and the screen-off display area parameters.

[0090] After obtaining the brightness parameters of each brightness detection zone, these parameters are analyzed to determine the brightness attenuation of each brightness detection zone. Combined with the parameters of the off-screen display area, especially the target shape, a matching area within the display area is selected that meets the requirements. Specifically, the off-screen display area is an area of ​​low brightness attenuation within the display area, and this low brightness attenuation area must overlap with the brightness detection zone with the lowest brightness attenuation. Furthermore, the low brightness attenuation area must meet the determined target shape requirements.

[0091] The extent to which the low-attenuation area overlaps the brightness detection area with the lowest brightness attenuation can be determined based on factors such as the target shape and display content required for screen-off display in actual applications. In some embodiments, while the low-attenuation area overlaps the brightness detection area with the lowest brightness attenuation, it can also overlap with other brightness detection areas depending on the actual situation. For example, the low-attenuation area may also overlap with other adjacent brightness detection areas to better meet target shape requirements.

[0092] Furthermore, the off-screen display area parameters can also include the size of the target shape. This size can be pre-stored in the driver module, set by the user, or determined by matching the off-screen display content and the brightness parameters of each brightness detection zone. For example, when selecting detection points as brightness detection zones, if two adjacent brightness detection zones have the same minimum brightness attenuation, the size of the target shape can be matched to the sizes of these two adjacent brightness detection zones so that the low brightness attenuation area covers both brightness detection zones.

[0093] The display control method of this embodiment selects low-brightness attenuation areas within the display area, where the brightness lifetime decays minimally, as the off-screen display area. The target shape is determined based on user needs or intelligent recommendations, making the off-screen display more personalized and rational. Furthermore, by stopping the display in areas with high brightness attenuation during off-screen mode, the aging rate of pixels in these areas is reduced, resulting in a more balanced brightness lifetime across the pixels in the display area. This, in turn, improves the brightness uniformity of the display panel, providing users with a better visual experience.

[0094] In some embodiments, after the step of determining the screen-off display area according to the brightness parameters of each brightness detection area, the display control method of the display panel further includes: returning to execute step 102.

[0095] Because the brightness of each area of ​​the display panel changes over time and with increased frequency during use, the process returns to step 102 to re-test the brightness and update the dynamic brightness changes in the brightness detection area. Re-determining the off-screen display area based on the detected brightness parameters ensures that the off-screen display area is always in an area with low brightness lifetime decay, thereby improving the brightness lifetime balance of each pixel in the display area.

[0096] In some embodiments, the area of ​​the remaining display area in the display region, excluding the off-screen display area, is larger than the area of ​​the off-screen display area. Thus, in the off-screen state, a small portion of pixels in the off-screen display area can be activated, while maintaining the off-screen display while disabling the display in other areas. This slows down the decay of pixels in other areas and significantly reduces the overall power consumption of the display panel.

[0097] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0098] Based on the same inventive concept, the present application also provides a display control device for implementing the aforementioned display panel. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of the display control device for one or more display panels provided below can be found in the above-mentioned limitations of the display control method, and will not be repeated here.

[0099] In one embodiment, Figure 13 As shown, a display control device for a display panel is provided, wherein the display area of ​​the display panel includes multiple brightness detection areas; the device includes: a brightness detection module 502, an area determination module 504 and a display control module 506, wherein:

[0100] The brightness detection module 502 is used to obtain the brightness parameters of each brightness detection area at a preset grayscale.

[0101] The area determination module 504 is used to determine the screen-off display area according to the brightness parameters of each brightness detection area; the screen-off display area is a low brightness attenuation area in the display area, and the low brightness attenuation area overlaps with at least one brightness detection area.

[0102] The display control module 506 is used to control the screen-off display area to perform screen-off display in the screen-off mode.

[0103] In some embodiments, the area determination module 504 is also used to determine the low brightness attenuation area in the display area based on the current brightness value of each brightness detection area at a preset gray scale, and the low brightness attenuation area serves as the screen-off display area; wherein the current brightness value of the brightness detection area overlapping with the low brightness attenuation area is higher than the current brightness value of other brightness detection areas.

[0104] In some embodiments, the area determination module 504 is also used to determine the brightness attenuation parameters of the brightness detection area based on the starting brightness value and current brightness value of the brightness detection area at a preset gray scale; and determine the low brightness attenuation area in the display area based on the brightness attenuation parameters of each brightness detection area, and the low brightness attenuation area serves as the screen-off display area.

[0105] In some embodiments, the area determination module 504 is also used to use the difference between the current brightness value and the starting brightness value of the brightness detection area at the preset gray scale as the brightness attenuation parameter of the brightness detection area at the preset gray scale; wherein, the screen-off display area overlaps with one or more brightness detection areas with the smallest difference value.

[0106] In some embodiments, the region determination module 504 is further configured to determine the brightness attenuation degree of each display partition according to the brightness parameters of each display partition; and to use the display partition with the lowest brightness attenuation degree as the screen-off display area.

[0107] In some embodiments, the area determination module 504 is also used to determine the parameters of the screen off display area; the parameters of the screen off display area include at least the target shape of the screen off display area; the screen off display area is determined based on the brightness parameters of each brightness detection area and the parameters of the screen off display area.

[0108] Each module in the display control device for the display panel described above can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0109] In one embodiment, a display device is provided. The display device can be a terminal, including but not limited to the following categories: mobile phones, televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, car monitors, industrial control equipment, medical displays, touch interactive terminals and other electronic products with display functions. The present application embodiment does not specifically limit this. Its internal structure diagram can be as follows: Figure 14As shown. The display device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface, the display unit and the input device are connected to the system bus via the input / output interface. The processor of the display device is used to provide computing and control capabilities. The memory of the display device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the display device is used to exchange information between the processor and an external device. The communication interface of the display device is used to communicate with an external terminal in a wired or wireless manner. The wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a display control method for a display panel is implemented.

[0110] Those skilled in the art will understand that Figure 14 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0111] In one embodiment, a display device is provided, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0112] Obtaining the brightness parameters of each brightness detection area at a preset grayscale;

[0113] Determine the off-screen display area according to the brightness parameters of each brightness detection area; the off-screen display area is a low brightness attenuation area in the display area, and the low brightness attenuation area overlaps with at least one brightness detection area;

[0114] In screen off mode, control the screen off display area to display the screen off.

[0115] In one embodiment, when the processor executes the computer program, the following steps are also implemented: based on the current brightness value of each brightness detection area at a preset gray scale, a low brightness attenuation area in the display area is determined, and the low brightness attenuation area serves as the screen-off display area; wherein the current brightness value of the brightness detection area overlapping with the low brightness attenuation area is higher than the current brightness value of other brightness detection areas.

[0116] In one embodiment, when the processor executes the computer program, the following steps are also implemented: determining the brightness attenuation parameter of the brightness detection area based on the starting brightness value and current brightness value of the brightness detection area at a preset gray scale; determining the low brightness attenuation area in the display area based on the brightness attenuation parameters of each brightness detection area, and the low brightness attenuation area serves as the screen-off display area.

[0117] In one embodiment, when the processor executes the computer program, the following steps are also implemented: the difference between the current brightness value and the starting brightness value of the brightness detection area at the preset gray scale is used as the brightness attenuation parameter of the brightness detection area at the preset gray scale; wherein, the screen-off display area overlaps with one or more brightness detection areas with the smallest difference value.

[0118] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining the brightness attenuation degree of each display partition according to the brightness parameters of each display partition; and using the display partition with the lowest brightness attenuation degree as the screen-off display area.

[0119] In one embodiment, when the processor executes the computer program, it also implements the following steps: determining the parameters of the screen off display area; the parameters of the screen off display area include at least the target shape of the screen off display area; determining the screen off display area based on the brightness parameters of each brightness detection area and the parameters of the screen off display area.

[0120] In one embodiment, when the processor executes the computer program, the processor further implements the following steps: returning to the step of obtaining the brightness parameters of each brightness detection area at a preset gray scale.

[0121] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), data processing logic devices based on quantum computing, and the like.

[0122] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A display control method for a display panel, characterized in that: The display area of ​​the display panel includes a plurality of brightness detection areas; the method includes: Obtaining brightness parameters of each brightness detection area at a preset grayscale; Determine a screen-off display area according to the brightness parameters of each brightness detection area; the screen-off display area is a low brightness attenuation area in the display area, and the low brightness attenuation area overlaps with at least one of the brightness detection areas; In the screen-off mode, the screen-off display area is controlled to perform screen-off display.

2. The method according to claim 1, characterized in that The brightness parameter of each brightness detection area at the preset grayscale includes the current brightness value of each brightness detection area at the preset grayscale; The determining of the screen-off display area according to the brightness parameters of each brightness detection area includes: According to the current brightness value of each brightness detection area under the preset grayscale, the low brightness attenuation area in the display area is determined, and the low brightness attenuation area serves as the screen-off display area; wherein the current brightness value of the brightness detection area overlapping with the low brightness attenuation area is higher than the current brightness value of the other brightness detection areas.

3. The method according to claim 1, characterized in that The brightness parameters of each brightness detection area at the preset grayscale include a starting brightness value and a current brightness value of each brightness detection area at the preset grayscale; The determining of the screen-off display area according to the brightness parameters of each brightness detection area includes: determining a brightness attenuation parameter of the brightness detection area according to a starting brightness value and a current brightness value of the brightness detection area at the preset grayscale; A low brightness attenuation area in the display area is determined according to the brightness attenuation parameters of each brightness detection area, and the low brightness attenuation area serves as the screen-off display area.

4. The method according to claim 3, characterized in that The determining of the brightness attenuation parameter of the brightness detection area according to the initial brightness value and the current brightness value of the brightness detection area at the preset grayscale includes: Using a difference between the current brightness value and the initial brightness value of the brightness detection area at the preset grayscale as a brightness attenuation parameter of the brightness detection area at the preset grayscale; The screen-off display area overlaps with one or more brightness detection areas with the smallest difference value.

5. The method according to claim 1, wherein The display area is divided into a plurality of display partitions, and the display partitions serve as the brightness detection areas; and determining the screen-off display area according to the brightness parameters of each of the brightness detection areas includes: determining a brightness attenuation degree of each of the display partitions according to the brightness parameter of each of the display partitions; The display partition with the lowest brightness attenuation is used as the screen-off display area.

6. The method according to claim 1, characterized in that The determining of the screen-off display area according to the brightness parameters of each brightness detection area includes: Determining parameters of the screen-off display area; the parameters of the screen-off display area at least including a target shape of the screen-off display area; The screen-off display area is determined according to the brightness parameters of each of the brightness detection areas and the screen-off display area parameters.

7. The method according to claim 1, characterized in that After determining the screen-off display area according to the brightness parameters of each brightness detection area, the method further includes: Return to the step of obtaining the brightness parameters of each brightness detection area at a preset grayscale.

8. The method according to any one of claims 1 to 7, characterized in that The area of ​​the remaining display area in the display area except the screen-off display area is larger than the area of ​​the screen-off display area.

9. A display control device for a display panel, characterized in that: The display area of ​​the display panel includes a plurality of brightness detection areas; the device includes: A brightness detection module, configured to obtain brightness parameters of each brightness detection area at a preset grayscale; an area determination module, configured to determine an off-screen display area according to the brightness parameters of each of the brightness detection areas; the off-screen display area being an area with low brightness attenuation in the display area, the area with low brightness attenuation overlapping with at least one of the brightness detection areas; The display control module is used to control the screen-off display area to perform screen-off display in the screen-off mode.

10. A display device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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