Brightness improvement method, device and equipment of display panel and storage medium

Abstract

The application discloses a display panel brightness improvement method, device, equipment and storage medium. The method comprises the following steps: determining a compensation mode corresponding to a first display area according to a first light-emitting brightness of the first display area; the compensation mode comprises a normal compensation mode and at least one dark state compensation mode; in the case that the compensation mode corresponding to the first display area is the dark state compensation mode, acquiring first dark state compensation data corresponding to the dark state compensation mode from a storage module; and compensating the light-emitting brightness of each light-emitting pixel in the first display area according to the first dark state compensation data. According to the embodiment of the application, when a certain display area meets the brightness condition of the dark state compensation mode, the dark state compensation data can be read from the storage module for targeted brightness compensation, the brightness difference between the display area and other areas is reduced, and the uniformity of the display effect is improved.

Description

Technical Field

[0001] This application belongs to the field of display panel technology, and particularly relates to a method, apparatus, device and storage medium for improving the brightness of a display panel. Background Technology

[0002] Existing display panel products, such as OLED (Organic Light-Emitting Diode) display panels, will exhibit brightness unevenness (Mura) during the manufacturing process due to factors such as processes, materials, and equipment. For example, differences in pixel arrangement, pixel size, pixel density, or the width and length of signal traces in different areas of the display panel will lead to Mura phenomena between different display areas.

[0003] Taking a display panel with an under-display area as an example, to improve the light transmittance of the under-display area, the light-emitting pixels in that area need to be adjusted. For instance, the light-emitting elements in the pixels might be retained, while the pixel circuitry is moved to a surrounding area. This increases the length of the signal traces between the light-emitting elements and the pixel circuitry. The line resistance of these traces reduces the driving current received by the light-emitting elements, resulting in lower brightness in that area. Furthermore, when the display panel shows a low-brightness image, the influence of the signal traces on the driving current is more pronounced due to the smaller current, leading to significant differences in brightness across different areas. Summary of the Invention

[0004] This application provides a method, apparatus, device, and storage medium for improving the brightness of a display panel, which can solve the technical problem of differences in luminous brightness in different areas of the display panel under low brightness conditions.

[0005] In a first aspect, embodiments of this application provide a method for improving the brightness of a display panel, applied to a display panel including a first display area; the method includes:

[0006] The compensation mode corresponding to the first display area is determined based on the first luminous brightness of the first display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode.

[0007] When the compensation mode corresponding to the first display area is dark compensation mode, the first dark compensation data corresponding to the dark compensation mode is obtained from the storage module.

[0008] The luminance of each luminous pixel in the first display area is compensated based on the first dark state compensation data.

[0009] In some embodiments, the display panel further includes a second display area, and the method further includes:

[0010] The compensation mode corresponding to the second display area is determined based on the second luminance of the second display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode.

[0011] When the compensation mode corresponding to the second display area is dark compensation mode, the second dark compensation data corresponding to the dark compensation mode is obtained from the storage module; the first dark compensation data and the second dark compensation data are inconsistent.

[0012] The luminance of each luminous pixel in the second display area is compensated based on the second dark state compensation data.

[0013] In some embodiments, the light transmittance of the first display area is greater than that of the second display area;

[0014] The brightness gain of each luminous pixel in the first display area is less in normal compensation mode than in dark compensation mode.

[0015] The brightness gain of each luminous pixel in the second display area is greater in normal compensation mode than in dark compensation mode.

[0016] In some embodiments, the brightness gain of each light-emitting pixel in the first display area is less than the brightness gain when the first light-emitting brightness is a first brightness value; the first brightness value and the second brightness value are located in the light-emitting brightness range corresponding to the dark state compensation mode, and the first brightness value is greater than the second brightness value.

[0017] In some embodiments, the brightness gain of each light-emitting pixel in the second display area is greater than the brightness gain when the second light-emitting brightness is the first brightness value; the first brightness value and the second brightness value are located within the light-emitting brightness range corresponding to the dark state compensation mode, and the first brightness value is greater than the second brightness value.

[0018] In some embodiments, the compensation mode includes at least a normal compensation mode, a first dark mode, and a second dark mode, wherein the luminous intensity range corresponding to the first dark mode is greater than the luminous intensity range corresponding to the second dark mode.

[0019] The brightness gain of each luminous pixel in the first display area is less in the first dark mode than in the second dark mode;

[0020] The brightness gain of each luminous pixel in the second display area is greater in the first dark mode than in the second dark mode.

[0021] In some embodiments, when the compensation mode corresponding to the first display area is a dark compensation mode, obtaining the first dark compensation data corresponding to the dark compensation mode from the storage module further includes:

[0022] Get the current refresh rate;

[0023] When the compensation mode corresponding to the first display area is dark compensation mode, the first dark compensation data corresponding to the current refresh rate is obtained from multiple sets of first dark compensation data in the storage module.

[0024] In some embodiments, determining the compensation mode corresponding to the first display area based on the first luminance of the first display area includes:

[0025] Obtain the target brightness value corresponding to the maximum grayscale level of the bound point;

[0026] Based on the target brightness value and the current grayscale of each light-emitting pixel in the first display area, determine the brightness register value corresponding to each light-emitting pixel;

[0027] The compensation mode corresponding to the first display area is determined based on the first correspondence and the brightness register value corresponding to each light-emitting pixel; the first correspondence is the correspondence between the brightness register value and the compensation mode.

[0028] Secondly, embodiments of this application provide a brightness adjustment device for a display panel, the device comprising:

[0029] The first compensation setting module is used to determine the compensation mode corresponding to the first display area based on the first luminance of the first display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode.

[0030] The first compensation data acquisition module is used to acquire the first dark state compensation data corresponding to the dark state compensation mode from the storage module when the compensation mode corresponding to the first display area is the dark state compensation mode.

[0031] The first compensation control module is used to compensate the luminous brightness of each luminous pixel in the first display area according to the first dark state compensation data.

[0032] Thirdly, embodiments of this application provide a brightness adjustment device for a display panel, the brightness adjustment device for the display panel including: a processor and a memory storing computer program instructions;

[0033] The processor executes computer program instructions to implement the brightness improvement method of the display panel in the above embodiments.

[0034] Fourthly, embodiments of this application provide a computer storage medium storing computer program instructions, which, when executed by a processor, implement the brightness improvement method for the display panel described in the above embodiments.

[0035] Compared with the prior art, the brightness improvement method, apparatus, device, and storage medium of the display panel provided in this application embodiment can determine the compensation mode corresponding to the first display area by using the first luminous brightness of the first display area. This compensation mode may include a normal compensation mode and at least one dark state compensation mode. When the compensation mode corresponding to the first display area is determined to be a dark state compensation mode, the first dark state compensation data corresponding to the dark state compensation mode can be read from the storage module, and brightness compensation can be performed on each luminous pixel based on the first dark state compensation data. When there is a brightness difference between the first display area and other display areas in the normal compensation mode, by obtaining the first luminous brightness of the first display area, the compensation mode can be switched to the dark state compensation mode based on the first luminous brightness, and brightness compensation can be performed on the luminous pixels of the first display area using the corresponding dark state compensation data. In addition to storing the normal compensation data of the first display area, the storage module can also pre-store additional dark state compensation data. When the first luminous brightness of the first display meets the switching conditions of the dark state compensation mode, the display panel can obtain the dark state compensation data and perform targeted brightness compensation on the first display area based on the dark state compensation data, thereby reducing the brightness difference between the first display area and other display areas and improving the uniformity of the display effect. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic flowchart of a method for improving the brightness of a display panel according to an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the actual brightness of each display area under different brightness levels provided in an embodiment of this application;

[0039] Figure 3 This is a flowchart illustrating a method for improving the brightness of a display panel according to another embodiment of this application;

[0040] Figure 4 This is a flowchart illustrating a method for improving the brightness of a display panel according to another embodiment of this application;

[0041] Figure 5This is a flowchart illustrating a method for improving the brightness of a display panel according to another embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the actual brightness of each display area under different brightness levels, provided in another embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the actual brightness of each display area in normal compensation mode according to an embodiment of this application;

[0044] Figure 8 A schematic diagram of the structure of a brightness adjustment device for a display panel provided in an embodiment of this application;

[0045] Figure 9 This is a schematic diagram of the structure of a brightness adjustment device for a display panel provided in an embodiment of this application. Detailed Implementation

[0046] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0049] Currently, existing display panel products, such as OLED (Organic Light-Emitting Diode) display panels, will exhibit brightness unevenness (Mura) during the manufacturing process due to factors such as processes, materials, and equipment. For example, differences in pixel arrangement, pixel size, pixel density, or the width and length of signal traces in different areas of the display panel will lead to Mura phenomena between different display areas.

[0050] Taking a display panel with an under-display area as an example, to improve the light transmittance of the under-display area, the light-emitting pixels in that area need to be adjusted. For example, the light-emitting elements in the pixels may be retained, while the pixel circuits may be moved to surrounding areas. This increases the length of the signal traces between the light-emitting elements and the pixel circuits. The line resistance of these traces reduces the driving current received by the light-emitting elements, resulting in lower brightness in that area. Furthermore, the impact on the driving current is more pronounced when the display panel shows a low-brightness image, leading to significant differences in brightness between different areas.

[0051] To address the aforementioned technical problems, embodiments of this application provide a method, apparatus, device, and storage medium for improving the brightness of a display panel. The method for improving the brightness of a display panel provided in this application embodiment will be described first below.

[0052] Figure 1 A flowchart illustrating a method for improving the brightness of a display panel according to an embodiment of this application is shown. The method is applied to a display panel, which includes a first display area; the method includes:

[0053] S110, determine the compensation mode corresponding to the first display area based on the first luminance of the first display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode;

[0054] S120, when the compensation mode corresponding to the first display area is dark compensation mode, the first dark compensation data corresponding to the dark compensation mode is obtained from the storage module.

[0055] S130, the luminance of each light-emitting pixel in the first display area is compensated according to the first dark state compensation data.

[0056] The brightness improvement method for a display panel provided in this embodiment can be applied to a brightness adjustment device for a display panel. This device can correct the brightness of the display panel to improve the problem of brightness differences between some display areas and other display areas when displayed at low brightness, thereby improving the compensation effect and display uniformity of the display panel. The display panel can be a PC, television, smart terminal, or tablet computer, etc. This embodiment does not limit the specific form of the display panel.

[0057] In this embodiment, the display panel can determine the compensation mode corresponding to the first display area based on the first luminance of the first display area. This compensation mode may include a normal compensation mode and at least one dark state compensation mode. When the compensation mode corresponding to the first display area is determined to be a dark state compensation mode, the first dark state compensation data corresponding to the dark state compensation mode can be read from the storage module, and brightness compensation can be performed on each luminous pixel based on the first dark state compensation data. When there is a brightness difference between the first display area and other display areas under normal compensation mode, by obtaining the first luminance of the first display area, the compensation mode can be switched to a dark state compensation mode based on the first luminance, and brightness compensation can be performed on the luminous pixels of the first display area using the corresponding dark state compensation data. In addition to storing the normal compensation data of the first display area, the storage module can also pre-store additional dark state compensation data. When the first luminance of the first display area meets the switching conditions of the dark state compensation mode, the display panel can obtain the dark state compensation data and perform targeted brightness compensation on the first display area based on the dark state compensation data, thereby reducing the brightness difference between the first display area and other display areas and improving the uniformity of the display effect.

[0058] In S110, when the display panel is emitting light, it can obtain the first luminance of the first display area and determine the corresponding compensation mode based on the first luminance. The compensation mode includes a normal compensation mode and at least one dark state compensation mode.

[0059] The aforementioned first display area can be a display area with a brightness difference compared to other display areas when the display panel is displaying images. For example, when a display panel has a front-facing camera, it typically includes a normal display area and an under-display camera area, with the front-facing camera located in the under-display camera area. To improve the shooting effect of the front-facing camera, it is usually necessary to ensure that the under-display camera area has high light transmittance. Therefore, the normal display area and the under-display camera area often differ in the specific arrangement of the light-emitting elements or pixel circuits, resulting in a brightness difference between the two areas.

[0060] In related technologies, the main way to improve the light transmittance of the under-display camera area is usually to place a light-emitting element for display in the under-display camera area, while the pixel circuit that drives the light-emitting element is placed in the surrounding area of ​​the under-display camera area. Since the pixel circuit is located outside the under-display camera area, the length of the signal trace that electrically connects to the anode of the light-emitting element will increase. It is understandable that the trace length and line resistance are positively correlated; as the trace length increases, the line resistance also increases. Therefore, when the pixel circuit drives the light-emitting element to emit light, the line resistance on the signal trace will have a certain impact on the driving current, causing the driving current to decrease. When the driving current decreases due to the IRDrop voltage drop, the brightness of the corresponding light-emitting element will also be lower. That is, when the display panel is displaying, the brightness of the under-display camera area will be lower than the brightness of the normal display area, resulting in uneven display brightness on the display panel.

[0061] When displaying images at low brightness, the driving current supplied by the pixel circuit to the light-emitting element is relatively low. This driving current is more significantly affected by the resistance of the signal traces, resulting in noticeable brightness differences between different display areas that are perceptible to the human eye, severely impacting the viewing experience. In other words, there is a certain brightness difference between the normal display area and the under-display camera area, and this difference becomes more pronounced as the image brightness decreases.

[0062] Please refer to Figure 2 , Figure 2 The diagram illustrates the actual brightness of the first display area and the normal display area under two different luminous brightness levels, L1 and L2, where L1 > L2. At brightness level L1, the brightness difference between the first display area and the normal display area is small; however, as the brightness decreases, a more significant brightness difference emerges between the first display area and the normal display area at brightness level L2, where the luminous brightness of the first display area is lower than that of the normal display area.

[0063] By setting multiple corresponding compensation modes for the first display area, the current compensation mode can be determined based on the initial luminance of the first display area when the display panel is displaying data. These multiple compensation modes can include a normal compensation mode and at least one dark compensation mode. In normal compensation mode, the display panel compensates for the first display area in the same way as it compensates for other display areas; while in dark compensation mode, the display panel uses dark compensation for the first display area, while using normal compensation for other display areas. When there is a brightness difference between the first display area and other display areas, by using different compensation methods, the brightness difference between the first display area and other display areas can be reduced.

[0064] It's understandable that using the normal compensation method means reading the compensation data corresponding to the normal compensation mode for brightness compensation. Conversely, using the dark compensation method means reading the compensation data corresponding to the dark compensation mode for brightness compensation.

[0065] Please refer to Figure 3 As an optional embodiment, the above-described S110 may include:

[0066] S210, obtain the target brightness value corresponding to the maximum grayscale of the binding point;

[0067] S220, determine the brightness register value corresponding to each light-emitting pixel based on the target brightness value and the current gray level of each light-emitting pixel in the first display area;

[0068] S230, determine the compensation mode corresponding to the first display area based on the first correspondence and the brightness register value corresponding to each light-emitting pixel; the first correspondence is the correspondence between the brightness register value and the compensation mode.

[0069] In this embodiment, the display panel can determine the luminance of the first display area based on the current brightness level and the grayscale values ​​of each luminous pixel. After determining the target brightness value corresponding to the maximum bounding grayscale, the display panel can calculate the brightness value corresponding to the current grayscale based on the current grayscale of each luminous pixel and the target brightness value, and determine the corresponding brightness register value based on this brightness value. After determining the brightness register value corresponding to each luminous pixel, the compensation mode corresponding to the brightness register value can be determined according to the first correspondence, thereby using different compensation modes to perform brightness compensation based on the luminance of the first display area.

[0070] In S210, the display panel can obtain the target brightness value corresponding to the maximum grayscale of the bound point during the current display process.

[0071] The display panel can include multiple brightness level modes, such as a high-brightness mode (HBM) and multiple regular brightness modes (Nor1-Norn). The target brightness value corresponding to each bound pixel grayscale is different under different brightness modes. When determining the ideal luminous brightness of each emitting pixel at a given grayscale, the display panel needs to determine the current brightness mode, and then determine the brightness value corresponding to each grayscale based on the target brightness value corresponding to the maximum bound pixel grayscale and the corresponding Gamma parameter.

[0072] In S220, after obtaining the target brightness value corresponding to the maximum binding point gray level, the brightness register value corresponding to each light-emitting pixel can be calculated based on the target brightness value and the current gray level of each light-emitting pixel in the first display area.

[0073] In one optional implementation, taking a maximum grayscale level of 255 and a corresponding target brightness value of 460 nits as an example, the display panel obtains the target brightness value corresponding to the maximum grayscale level. After obtaining this target brightness value, the display panel can calculate the brightness value corresponding to each grayscale level within the complete grayscale range using the grayscale-to-brightness conversion formula. The grayscale-to-brightness conversion formula can be:

[0074] Lv1 = (Gray x / Gray max ) Gamma *L max ;

[0075] Where Lv1 is the brightness value, Gray x Grayscale values, Gray max For maximum bounding grayscale, Gamma is the Gamma parameter that the display panel needs to match the brightness change trend after brightness correction. max This represents the target brightness value corresponding to the grayscale of the maximum binding point.

[0076] The Gamma parameter is typically set to 2.2, but other values ​​are also acceptable and are not restricted here. Taking a Gamma parameter of 2.2 as an example, substituting the maximum bound grayscale and the target brightness value into the above conversion formula yields:

[0077] Lv1 = (Gray x / 255) 2 . 2 *460;

[0078] According to the above conversion formula, the display panel can substitute the current gray level of each light-emitting pixel in the first display area into the formula to obtain the brightness value of each light-emitting pixel at the current gray level.

[0079] The display panel's storage module also stores the correspondence between brightness register values ​​and brightness values. For example, the brightness register can store register values ​​in hexadecimal. When the display panel needs to display a certain brightness value, it can determine the corresponding brightness register value based on that brightness value and output the corresponding data voltage to the corresponding light-emitting pixel based on the brightness register value, thereby adjusting the brightness of the light-emitting pixel to the required display brightness value. For example, when the brightness register value is 0FFF, the corresponding brightness value can be 700 nits. When the brightness register value is 07FF, the corresponding brightness value can be 460 nits.

[0080] Based on multiple brightness register values ​​and their corresponding brightness values, a fitted correspondence between brightness register values ​​and brightness values ​​can be generated in the display panel. After determining the brightness value of a certain luminous pixel at the current grayscale, the brightness register value corresponding to the brightness value can be determined according to this fitted correspondence. For each luminous pixel in the first display area, the corresponding brightness register value can be determined separately based on the brightness value of each luminous pixel.

[0081] In S230, after determining the brightness register value corresponding to each light-emitting pixel in the first display area, the display panel can determine the compensation mode currently corresponding to the first display area based on the brightness register value of each light-emitting pixel and the first correspondence.

[0082] The aforementioned first correspondence can be a correspondence between luminance register values ​​and compensation modes. For example, within the range of luminance register values, multiple register value intervals can be divided, and each register value interval can be mapped to a compensation mode. After obtaining the luminance register value of the luminous pixel, the corresponding compensation mode can be determined by judging which register value interval the luminance register value falls within. For example, the range of luminance register values ​​can be divided into a normal range and at least one dark range. When the luminance register value is within the normal range, the compensation mode corresponding to the first display area is the normal compensation mode; when the luminance register value is within a certain dark range, the compensation mode corresponding to the first display area is the dark compensation mode corresponding to that dark range.

[0083] It is understandable that the first display area typically contains multiple luminous pixels. The brightness register value corresponding to each luminous pixel may be the same or different.

[0084] When the brightness register values ​​corresponding to multiple luminous pixels are all the same, the compensation mode corresponding to the first display area can be determined based on the matching result between the brightness register value and each register value range.

[0085] When the brightness register values ​​corresponding to multiple luminous pixels are inconsistent, the average of the multiple brightness register values ​​can be calculated, and the calculated average result can be matched with the intervals of each register value to determine which register value interval the average result falls within. In addition, a weighted average of multiple brightness register values ​​can be calculated, or the mode or median of multiple brightness register values ​​can be taken, etc., without limitation.

[0086] In another optional implementation, the display panel can further determine the corresponding compensation mode for each light-emitting pixel within the first display area based on the brightness register value corresponding to each light-emitting pixel, and perform brightness compensation accordingly. For example, among the multiple light-emitting pixels in the first display area, for light-emitting pixels whose brightness register values ​​are within the normal range, a normal compensation mode is used for brightness compensation; for light-emitting pixels whose brightness register values ​​are within the dark range, a dark compensation mode is used for brightness compensation.

[0087] In S120, after the display panel determines the compensation mode corresponding to the first display area based on the first luminous brightness of the first display area, if the compensation mode is a dark state compensation mode, the display panel can obtain the first dark state compensation data corresponding to the dark state compensation mode from the storage module.

[0088] The display panel can pre-store compensation data corresponding to different compensation modes. For example, when the compensation modes include a normal compensation mode and at least one dark compensation mode, the storage module can pre-store a set of normal compensation data and at least one set of dark compensation data, each corresponding to a specific compensation mode. After determining the current compensation mode of the first display area, the compensation data corresponding to that mode can be retrieved from the storage module to perform brightness compensation on each luminous pixel in the first display area.

[0089] It should be noted that when different compensation modes are used to compensate for the luminous pixels within the first display area in the display panel to improve the luminous brightness deviation of the first display area, the storage module can store compensation data corresponding to the number of compensation modes for each luminous pixel within the first display area. For example, for each luminous pixel within the first display area, when there are n compensation modes, the storage module can store n sets of compensation data corresponding to each of the n compensation modes. These n sets of compensation data may include one set of normal compensation data and (n-1) sets of dark state compensation data.

[0090] For display areas other than the first display area, the storage module can store only the normal compensation data corresponding to the normal compensation mode. Since other display areas do not require switching compensation modes, the storage module can store only the normal compensation data for each luminous pixel in other display areas, thus saving the space occupied by compensation data in the storage module and avoiding exceeding the storage space limit for compensation files.

[0091] As an optional embodiment, taking a compensation mode that includes one normal compensation mode and two dark state compensation modes as an example, the storage module can store one set of normal compensation data and two sets of dark state compensation data. The normal compensation data consists of the compensation data corresponding to all luminous pixels in the display panel at different brightness values. The two sets of dark state compensation data are only the compensation data corresponding to each luminous pixel within the first display area of ​​the display panel. It is understood that since the first display area is only a part of the entire display area, storing two additional sets of dark state compensation data on top of the normal compensation data in the storage module requires relatively little storage space and will not cause the size of the compensation data to exceed the storage capacity limit of the storage module.

[0092] When the display panel is powered on, it can load the compensation data stored in the storage module into SRAM (Static Random Access Memory) for the driver chip DDIC to read. For each luminous pixel in the first display area, the corresponding normal compensation data and dark state compensation data in the storage module can be loaded into SRAM respectively. The driver chip can load the compensation data corresponding to the compensation mode from different addresses in SRAM according to the corresponding compensation mode, thereby realizing dynamic switching of the compensation mode.

[0093] It should be noted that after determining the corresponding compensation mode based on the first luminance of the first display area, the display panel can also determine the acquisition address corresponding to the currently acquired compensation data. If the acquisition address corresponds to the compensation mode, it can continue to acquire compensation data from the current address for brightness compensation. For example, when the display panel determines the compensation mode to be dark compensation mode based on the first luminance, it can first acquire the loading address of the compensation data for the first display area at the current moment. If the loading address of the compensation data is the address corresponding to the normal compensation data, the driver chip can switch the loading address to the address corresponding to the dark compensation data and load the corresponding dark compensation data. If the loading address of the compensation data is the address corresponding to the dark compensation data, the driver chip does not need to adjust the loading address and can continue to load the corresponding dark compensation data from that address.

[0094] Please refer to Figure 4 As an optional embodiment, the above-described S120 may include:

[0095] S310, obtain the current refresh rate;

[0096] S320, when the compensation mode corresponding to the first display area is dark compensation mode, obtains the first dark compensation data corresponding to the current refresh rate from multiple sets of first dark compensation data in the storage module.

[0097] In this embodiment, the storage module in the display panel also stores compensation data corresponding to different refresh rates under the same compensation mode. After obtaining the current refresh rate, if the compensation mode of the first display area is a dark compensation mode, the display panel can obtain the first dark compensation data corresponding to the current refresh rate from the multiple sets of first dark compensation data corresponding to the dark compensation mode stored in the storage module.

[0098] In S310, when the display panel is displaying, the refresh rate of the display panel can also be a factor affecting the brightness difference between different display areas. Therefore, the display panel can obtain the current refresh rate and perform brightness compensation based on the current refresh rate.

[0099] At different refresh rates, the frame period of a single image frame on a display panel varies. When driving each luminous pixel in the display panel to output scan signals line by line, since the total number of rows on the display panel remains constant, the effective signal duration received by each row of luminous pixels also varies when the frame period of a single image frame is different. In other words, at a lower refresh rate, the effective signal duration received by the luminous pixels is longer, and correspondingly, the charging time of the pixel circuit is also longer. Conversely, at a higher refresh rate, the effective signal duration received by the luminous pixels is shorter, and the charging time of the pixel circuit is correspondingly shorter. Therefore, at higher refresh rates, insufficient charging time of the pixel circuit can lead to noticeable brightness differences between different display areas due to signal routing and other factors, resulting in poor display quality.

[0100] In S320, after determining the current refresh rate, the display panel can perform brightness compensation according to the compensation mode corresponding to the first display area. When the compensation mode corresponding to the first display area is the dark compensation mode, the display panel can select the first dark compensation data corresponding to the current refresh rate from multiple sets of first dark compensation data stored in the storage module, and perform brightness compensation on each luminous pixel in the first display area according to the first dark compensation data.

[0101] When the storage module has sufficient storage space, it can store corresponding normal compensation data and dark state compensation data for different refresh rates. The display panel can determine the corresponding compensation data based on the current refresh rate and compensation mode, and use this compensation data to perform brightness compensation on the first display area.

[0102] In one optional implementation, the compensation mode may include a normal compensation mode, a dark compensation mode, and an ultra-dark compensation mode, and the refresh rate supported by the display panel may include 60Hz, 90Hz, and 120Hz. For each luminous pixel in the first display area, the storage module may store three sets of compensation data corresponding to the normal compensation mode, dark compensation mode, and ultra-dark compensation mode at 60Hz, and may also store three sets of compensation data corresponding to the normal compensation mode, dark compensation mode, and ultra-dark compensation mode at 90Hz and 120Hz, for a total of nine sets of compensation data. When the display panel determines that the corresponding compensation mode is ultra-dark compensation mode based on the first luminous brightness of the first display area, if the current refresh rate is 120Hz, the display panel can obtain the first dark compensation data corresponding to the ultra-dark compensation mode at 120Hz from the storage module, and perform brightness compensation on the luminous pixels of the first display area based on the first dark compensation data.

[0103] In S130, after the display panel obtains the first dark state compensation data, it can compensate the brightness of each light-emitting pixel in the first display area according to the first dark state compensation data, so that the brightness difference between the light-emitting pixels in the first display area and the light-emitting pixels in other display areas is reduced after brightness compensation, thereby improving the brightness difference problem between different display areas and improving the uniformity of display effect.

[0104] It is understandable that the display panel can also have multiple different first display areas. For each first display area, the corresponding compensation mode can be determined using the method described above, and the corresponding first dark state compensation data can be obtained for brightness compensation. The first dark state compensation data corresponding to each different first display area can be the same or different.

[0105] Please refer to Figure 5 As an optional embodiment, the display panel may further include a second display area, and the brightness improvement method of the display panel may further include:

[0106] S410, determine the compensation mode corresponding to the second display area based on the second luminance of the second display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode;

[0107] S420, when the compensation mode corresponding to the second display area is dark compensation mode, the second dark compensation data corresponding to the dark compensation mode is obtained from the storage module; the first dark compensation data and the second dark compensation data are inconsistent;

[0108] S430, compensates for the luminous brightness of each luminous pixel in the second display area based on the second dark state compensation data.

[0109] In this embodiment, the display panel may include a first display area and a second display area. The first and second display areas have brightness differences compared to other display areas, with the first display area having a lower luminous intensity than the other display areas, and the second display area having a higher luminous intensity than the other display areas. In dark-state compensation mode, the display panel can use first dark-state compensation data to compensate the brightness of the first display area and second dark-state compensation data to compensate the brightness of the second display area. By using different compensation data to achieve brightness compensation, targeted brightness compensation can be performed on the two display areas separately, thereby reducing the brightness differences between the first and second display areas and other display areas.

[0110] In S410, the display panel may further include a second display area. This second display area, when displayed at low brightness, will also exhibit brightness differences compared to other display areas, thus affecting the uniformity of the display effect and causing poor display quality. The display panel can acquire a second luminous intensity of the second display area and determine a corresponding compensation mode based on this second luminous intensity. The compensation modes include a normal compensation mode and at least one dark state compensation mode.

[0111] It is understandable that the display panel obtains the second luminous brightness in a similar way to obtain the first luminous brightness, and will not be described in detail here.

[0112] In S420, when the display panel determines the compensation mode corresponding to the second display area based on the second luminance, if the compensation mode is a dark state compensation mode, the display panel can read the second dark state compensation data corresponding to the dark state compensation mode from the storage module. This second dark state compensation data is not consistent with the first dark state compensation data.

[0113] Understandably, when the display panel is displayed at low brightness, the second display area differs in brightness not only from other display areas but also from the first display area. If the same dark-state compensation data is used to simultaneously compensate for the brightness of both the first and second display areas, the brightness difference between them cannot be eliminated. By applying different dark-state compensation data to each of the two display areas, individual brightness compensation can be performed for each area, thereby reducing the brightness difference between the two display areas and the brightness difference between the two display areas and the other display areas of the display panel.

[0114] In S430, after obtaining the second dark state compensation data from the storage module according to the dark state compensation mode corresponding to the second display area, the brightness of each light-emitting pixel in the second display area can be compensated according to the second dark state compensation data, so that the brightness difference between the light-emitting pixels in the second display area and the light-emitting pixels in the first display area and other display areas is reduced after brightness compensation, thereby improving the brightness difference problem of different display areas and improving the uniformity of display effect.

[0115] As an optional embodiment, the transmittance of the first display area is greater than that of the second display area; the brightness gain of each light-emitting pixel in the first display area in normal compensation mode is less than that in dark compensation mode; and the brightness gain of each light-emitting pixel in the second display area in normal compensation mode is greater than that in dark compensation mode.

[0116] In the display panel, the first display area and the second display area can together form the under-display camera area. The light transmittance of the first display area is greater than that of the second display area. The first display area is the transparent area of ​​the under-display camera area and is used to house the camera components. The second display area is the transition area of ​​the under-display camera area and is used to house the pixel circuits corresponding to the light-emitting elements in the first display area. Since only light-emitting elements are housed in the first display area, and the pixel circuits corresponding to the light-emitting elements are located in the second display area, the light transmittance of the first display area can be increased, thereby meeting the light transmittance requirements of the under-display camera area.

[0117] During Gamma adjustment, the first and second display areas are typically treated as a single unit. Since the pixel circuits corresponding to the light-emitting elements in the first display area are located in the second display area, the signal traces connecting the light-emitting elements and the pixel circuits are relatively long. At low brightness, the resistance of these traces will affect the driving current of the light-emitting elements, causing a decrease in the brightness of the first display area. When adjusting the under-display camera area as a whole, the reduced brightness of the first display area will lead to a decrease in the overall brightness of the under-display camera area. Because this decrease in brightness creates a brightness difference between the under-display camera area and the normal display area, the brightness of the under-display camera area will be adjusted during Gamma adjustment to increase its overall brightness. It is understandable that when increasing the brightness of the under-display camera area during Gamma adjustment, the brightness of the second display area will also be increased, resulting in a brightness level higher than the normal display area. In other words, during Gamma adjustment, the brightness of the second display area will be higher than the normal display area, while the brightness of the first display area will be lower. Since the first and second display areas are usually set up adjacently, there will be a significant brightness difference between the first and second display areas after Gamma adjustment when displaying at low brightness.

[0118] Please refer to Figure 6 , Figure 6 The diagram illustrates the brightness of the first display area, the second display area, and the normal display area under two different luminous brightness levels, L1 and L2, where L1 > L2. L1 represents the higher luminous brightness, and L2 represents the lower luminous brightness. Figure 6 As shown, at L1 brightness, the driving current received by the light-emitting pixels in the first and second display areas is less affected, resulting in a small brightness difference between the first and second display areas and the normal display area. However, as the brightness decreases, at L2 brightness, the driving current received by the light-emitting pixels in the first display area is more affected, leading to a decrease in the brightness of the first display area. When adjusting the overall brightness of the first and second display areas to match that of the normal display area, the brightness of both areas will be simultaneously increased, resulting in the second display area having a higher brightness than the normal display area.

[0119] As the above analysis shows, after normal Gamma adjustment, applying brightness compensation to the first and second display areas using normal compensation mode will result in the brightness of the first display area being lower than that of the normal display area, and the brightness of the second display area being higher than that of the normal display area. To reduce the brightness difference between the first, second, and normal display areas, the normal compensation data for each luminous pixel in the first display area under normal compensation mode and the dark compensation data under dark compensation mode can be adjusted so that the brightness gain of each luminous pixel in the first display area under normal compensation mode is less than the brightness gain under dark compensation mode.

[0120] When the display panel is displaying at low brightness, switching the compensation mode of the luminous pixels in the first display area to dark compensation mode and using dark compensation data to compensate the luminous pixels results in a greater brightness gain than that produced by brightness compensation in normal compensation mode. This allows the first display area to increase its luminous brightness when switching to dark compensation mode for brightness compensation, thereby reducing the brightness difference between the first display area and the normal display area, as well as the brightness difference between the first display area and the second display area.

[0121] Similarly, by setting the normal compensation data for each luminous pixel in the second display area in normal compensation mode and the dark compensation data in dark compensation mode, the brightness gain of each luminous pixel in normal compensation mode is greater than the brightness gain in dark compensation mode. When displaying at low brightness, compensation can be performed by switching to dark compensation mode, thereby reducing the brightness gain of the second display area and lowering the luminous brightness of the second display area.

[0122] The luminance of the first display area increases in dark-state compensation mode, while the luminance of the second display area decreases. By performing brightness compensation using the dark-state compensation data corresponding to the first and second display areas respectively, the luminance of the first display area can be increased, while the luminance of the second display area can be decreased. This reduces the brightness difference between the first and second display areas and the normal display area, thereby improving the display uniformity of the display panel.

[0123] As an optional embodiment, the brightness gain of each light-emitting pixel in the first display area is less than the brightness gain when the first light-emitting brightness is a first brightness value than when the first light-emitting brightness is a second brightness value; the first brightness value and the second brightness value are located within the light-emitting brightness range corresponding to the dark state compensation mode, and the first brightness value is greater than the second brightness value;

[0124] Taking the under-display camera area as the first display area as an example, when the display panel is in low brightness, the increased length of the signal traces in the under-display camera area will affect the driving current of the light-emitting pixels, resulting in lower brightness of the light-emitting pixels. As the brightness continues to decrease, the line resistance of the signal traces has a greater impact on the driving current, which will further increase the brightness difference between the light-emitting brightness of the first display area and other display areas. That is, in low brightness display, the lower the brightness, the greater the brightness difference between the first display area and other display areas. The aforementioned brightness difference can be the ratio of the brightness difference between the first display area and other display areas to the first light-emitting brightness in low brightness display.

[0125] To perform targeted brightness compensation for the first display area at different brightness levels under low-brightness display conditions, the first dark-state compensation data in the dark-state compensation mode can be adjusted so that the brightness gain of the luminous pixels in the first display area at the first brightness value is less than the brightness gain at the second brightness value. Specifically, the first brightness value is greater than the second brightness value, and both the first and second brightness values ​​are within the luminous brightness range corresponding to the dark-state compensation mode.

[0126] Understandably, in low-brightness displays, the lower the brightness value, the greater the brightness difference between the first display area and other display areas. Therefore, when the brightness value decreases, the brightness gain of each luminous pixel in the first display area needs to be increased to effectively compensate for the gradually increasing brightness difference. This ensures that the luminous brightness of the first display area remains consistent with or close to that of other display areas after brightness compensation. Thus, by setting the brightness gain at the first brightness value to be less than the brightness gain at the second brightness value, the brightness gain during brightness compensation can be increased when the brightness of the luminous pixels in the first display area decreases, thereby improving the uniformity of display across different areas through brightness compensation.

[0127] As an optional embodiment, the brightness gain of each light-emitting pixel in the second display area is greater than the brightness gain when the second light-emitting brightness is the first brightness value; the first brightness value and the second brightness value are located within the light-emitting brightness range corresponding to the dark state compensation mode, and the first brightness value is greater than the second brightness value.

[0128] For the second display area in the display panel, taking the first display area and the second display area as the transparent area and transition area of ​​the under-display camera area, respectively, as an example. Based on the analysis of the transparent area and transition area in the above embodiments, the first and second display areas are typically adjusted as a single area of ​​the under-display camera area. When the brightness of the first display area is low, the Gamma adjustment process will determine that the brightness of the overall area formed by the first and second display areas is low, and will increase the brightness of this overall area, i.e., the under-display camera area. This will result in the brightness of the second display area being higher. Furthermore, in low-brightness displays, as the brightness gradually decreases, the brightness difference between the first display area and other display areas gradually increases. During the Gamma adjustment process, the lower the brightness, the greater the intensity of the overall brightness increase adjustment for the under-display camera area. Consequently, in low-brightness displays, as the brightness gradually decreases, the brightness difference between the second display area and other display areas also gradually increases.

[0129] Similar to the principle of setting brightness gain under first and second brightness values ​​in the first display area, in order to perform targeted brightness compensation for the second display area at different brightness levels under low brightness display conditions, the second dark state compensation data in the dark state compensation mode can be adjusted so that the brightness gain of the luminous pixels in the second display area at the first brightness value is greater than the brightness gain at the second brightness value. Specifically, the first brightness value is greater than the second brightness value, and both the first and second brightness values ​​are within the luminous brightness range corresponding to the dark state compensation mode.

[0130] Because in low-brightness displays, the lower the brightness value, the greater the brightness difference between the second display area and other display areas, and the luminous brightness of the second display area will be higher than that of other display areas. Therefore, when the brightness value decreases, the brightness gain of each luminous pixel in the second display area needs to be reduced to effectively compensate for the gradually increasing brightness difference, so that the luminous brightness of the second display area can be consistent with or close to that of other display areas after brightness compensation.

[0131] By setting the brightness gain at the first brightness value to be greater than the brightness gain at the second brightness value, the brightness gain during brightness compensation can be reduced when the brightness of the light-emitting pixels in the second display area decreases, thereby narrowing the brightness difference between the second display area and other light-emitting areas and improving the display uniformity of each display area through brightness compensation.

[0132] As an optional embodiment, the compensation mode includes at least a normal compensation mode, a first dark mode, and a second dark mode, wherein the luminance range corresponding to the first dark mode is greater than the luminance range corresponding to the second dark mode. The luminance gain of each luminous pixel in the first display area is less than the luminance gain in the second dark mode. The luminance gain of each luminous pixel in the second display area is greater in the first dark mode than in the second dark mode.

[0133] When the display panel performs brightness compensation for the first display area, the corresponding compensation mode can include one normal compensation mode and at least one dark state compensation mode. The following example uses two dark state compensation modes.

[0134] The two dark state compensation modes are a first dark state mode and a second dark state mode. The luminance range corresponding to the first dark state mode does not overlap with that corresponding to the second dark state mode, and the luminance range corresponding to the first dark state mode is larger than that corresponding to the second dark state mode. That is, when displaying at low brightness, as the luminance gradually decreases, the compensation mode can switch from the first dark state mode to the second dark state mode.

[0135] Please refer to Figure 7 , Figure 7 This diagram illustrates the brightness of the first display area, the second display area, and the normal display area when brightness compensation is performed using the normal compensation mode, with the luminous intensity in the normal range, the first dark range, and the second dark range. The normal range refers to the brightness range corresponding to the normal compensation mode, the first dark range is the luminous intensity range corresponding to the first dark mode, and the second dark range is the luminous intensity range corresponding to the second dark mode. Figure 7 As shown, when the luminous intensity range is within the normal range, if the normal compensation mode is used for brightness compensation, the brightness difference between the first display area, the second display area, and the normal display area is small. When the luminous intensity range is within the first dark state range, if the normal compensation mode is used for brightness compensation, there is a certain brightness difference between the first display area, the second display area, and the normal display area. When the luminous intensity range is within the second dark state range, if the normal compensation mode is used for brightness compensation, there is a more obvious brightness difference between the first display area, the second display area, and the normal display area. Therefore, if only the normal compensation mode is used for brightness compensation, as the luminous intensity decreases, both the first and second display areas will have a more obvious brightness difference from the normal display area.

[0136] The display panel's storage module stores dark state compensation data corresponding to different dark state compensation modes. When the first luminous brightness of the first display area is within the brightness range corresponding to the first dark state mode, the display panel can read a set of dark state compensation data corresponding to the first dark state mode from the storage module and perform brightness compensation on each luminous pixel in the first display area according to the dark state compensation data.

[0137] Accordingly, when the first luminous brightness of the first display area is within the brightness range corresponding to the second dark mode, the display panel can read a set of dark state compensation data corresponding to the second dark mode from the storage module, and perform brightness compensation on each luminous pixel in the first display area according to the dark state compensation data.

[0138] Understandably, because the luminance in the second dark mode is lower than that in the first dark mode, the individual luminous pixels in the first display area are more affected by signal trace resistance and other design factors that increase light transmittance under lower brightness, resulting in a greater brightness difference between the first display area and other display areas in the second dark mode. To improve the brightness compensation intensity in the second dark mode, the brightness gain of each luminous pixel in the first dark mode can be set to be less than the brightness gain in the second dark mode.

[0139] Similarly, in the second dark mode, the brightness difference between the second display area and other display areas is greater. Since the luminous brightness of the second display area is usually greater than that of other display areas, in order to improve the brightness compensation intensity in the second dark mode, the brightness gain of each luminous pixel in the second display area can be set to be greater than that in the first dark mode than in the second dark mode. This will cause the brightness gain of each luminous pixel to gradually decrease as the brightness gradually decreases, thereby reducing the brightness difference between the second display area and other display areas.

[0140] It is understandable that the compensation data for each pixel in the first display area differs under different compensation modes. For example, for a given luminous pixel, when the target brightness value corresponding to the maximum bound grayscale remains unchanged, the compensation data for the normal compensation mode at the same grayscale is different from the compensation data for each dark compensation mode. Furthermore, because the driving current of the first display area decreases due to factors such as signal trace resistance during low-brightness display, the luminous brightness of the first display area will decrease. Therefore, at the same grayscale, the compensation data for the normal compensation mode should be less than the compensation data for the dark compensation mode. That is, when switching from the normal compensation mode to the dark compensation mode, the compensation data changes from normal compensation data to dark compensation data, which will increase the luminous brightness of the luminous pixels, thereby raising the luminous brightness of the first display area and reducing the brightness difference between the first display area and other display areas.

[0141] In one optional implementation, the display panel can determine the compensation mode corresponding to the first display area based on the brightness register values ​​of each luminous pixel within the first display area. For example, during Gamma adjustment, when the display panel displays an image, the actual luminous brightness values ​​of each luminous pixel in the first display area and other display areas can be obtained based on the captured images corresponding to each brightness register value. From multiple captured images, images where the actual luminous brightness value of the first display area differs significantly from that of other display areas can be identified. The brightness register value corresponding to this captured image is the brightness node at which the first display area begins to experience brightness decay when displayed at low brightness. When using the brightness register value as the luminous brightness of the luminous pixel to determine the compensation mode, the brightness register value corresponding to this captured image can be used as the threshold between the normal compensation mode and the dark compensation mode. When the display panel displays an image, the corresponding brightness register value can be directly read from the brightness register and compared with the threshold value to determine the corresponding compensation mode. For example, when the brightness register value is greater than the threshold value, the compensation mode is determined to be the normal compensation mode; when the brightness register value is less than the threshold value, the compensation mode is determined to be the dark compensation mode.

[0142] In one optional implementation, the brightness register value can be hexadecimal with 3 significant bits, resulting in a value range of 0x000-0xFFF, corresponding to decimal 0-4095. When brightness decay occurs in the first display area, the brightness register value can be 0x110, corresponding to decimal 272. That is, when the brightness register value is between 0x111 and 0xFFF, the compensation mode is normal compensation mode; when the brightness register value is between 0x00 and 0x110, the compensation mode is dark compensation mode.

[0143] As an optional embodiment, the above compensation mode may include multiple dark state compensation modes. Taking the compensation mode containing two dark state compensation modes as an example, when the brightness register value is between 0x00 and 0x110, the threshold values ​​of the two dark state compensation modes can be further determined. For example, when the two dark state compensation modes are dark state compensation mode and ultra-dark state compensation mode, if the threshold value is set to 0x70, then when the brightness register value is between 0x00 and 0x70, the compensation mode is ultra-dark state compensation mode; when the brightness register value is between 0x70 and 0x110, the compensation mode is dark state compensation mode.

[0144] This application embodiment also provides a brightness adjustment device for a display panel, such as... Figure 8 As shown, the device includes:

[0145] The first compensation setting module 801 is used to determine the compensation mode corresponding to the first display area based on the first luminance of the first display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode.

[0146] The first compensation data acquisition module 802 is used to acquire the first dark state compensation data corresponding to the dark state compensation mode from the storage module when the compensation mode corresponding to the first display area is the dark state compensation mode.

[0147] The first compensation control module 803 is used to compensate the luminous brightness of each luminous pixel in the first display area according to the first dark state compensation data.

[0148] As one implementation of this application, the above-mentioned apparatus may further include:

[0149] The second compensation setting module is used to determine the compensation mode corresponding to the second display area based on the second luminance of the second display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode.

[0150] The second compensation data acquisition module is used to acquire the second dark state compensation data corresponding to the dark state compensation mode from the storage module when the compensation mode corresponding to the second display area is the dark state compensation mode; the first dark state compensation data and the second dark state compensation data are inconsistent.

[0151] The second compensation control module is used to compensate the luminous brightness of each luminous pixel in the second display area according to the second dark state compensation data.

[0152] As one implementation of this application, the first compensation data acquisition module 802 may further include:

[0153] The refresh rate acquisition unit is used to acquire the current refresh rate;

[0154] The compensation data acquisition unit is used to acquire the first dark state compensation data corresponding to the current refresh rate from multiple sets of first dark state compensation data in the storage module when the compensation mode corresponding to the first display area is dark state compensation mode.

[0155] As one implementation of this application, the first compensation setting module 801 may further include:

[0156] The target brightness acquisition unit is used to acquire the target brightness value corresponding to the maximum grayscale of the binding point;

[0157] The register value acquisition unit is used to determine the brightness register value corresponding to each light-emitting pixel based on the target brightness value and the current gray level of each light-emitting pixel in the first display area.

[0158] The compensation mode determination unit is used to determine the compensation mode corresponding to the first display area based on the first correspondence and the brightness register value corresponding to each light-emitting pixel; the first correspondence is the correspondence between the brightness register value and the compensation mode.

[0159] Figure 9 A schematic diagram of the hardware structure of the brightness adjustment device for the display panel provided in an embodiment of this application is shown.

[0160] The brightness adjustment device for the display panel may include a processor 901 and a memory 902 storing computer program instructions.

[0161] Specifically, the processor 901 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0162] Memory 902 may include mass storage for data or instructions. For example, and not limitingly, memory 902 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where suitable, memory 902 may include removable or non-removable (or fixed) media. Where suitable, memory 902 may be internal or external to the brightness adjustment device of the display panel. In a particular embodiment, memory 902 is a non-volatile solid-state memory.

[0163] In a particular embodiment, memory 902 may include read-only memory (ROM), random access memory (RAM), disk storage media device, optical storage media device, flash memory device, electrical, optical, or other physical / tangible memory storage device. Thus, generally, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of this disclosure.

[0164] The processor 901 reads and executes computer program instructions stored in the memory 902 to implement any of the display panel brightness improvement methods in the above embodiments.

[0165] In one example, the brightness adjustment device for the display panel may also include a communication interface 903 and a bus 910. Wherein, as Figure 9As shown, the processor 901, memory 902, and communication interface 903 are connected through bus 910 and complete communication with each other.

[0166] The communication interface 903 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0167] Bus 910 includes hardware, software, or both, that couples components of a display panel's brightness adjustment device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 910 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0168] Furthermore, in conjunction with the brightness improvement methods for the display panel in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the brightness improvement methods for the display panel in the above embodiments.

[0169] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0170] The functional blocks shown in the above block diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0171] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0172] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0173] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for improving the brightness of a display panel, characterized in that, The display panel includes a first display area and a normal display area; the pixel circuit for driving the light-emitting element to emit light in the first display area is disposed outside the first display area; the pixel circuit for driving the light-emitting element to emit light in the normal display area is disposed inside the normal display area; the signal trace length between the light-emitting element in the first display area and the pixel circuit driving it to emit light is greater than the signal trace length in the normal display area. The method includes: The compensation mode corresponding to the first display area is determined based on the first luminance of the first display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode. When the compensation mode corresponding to the first display area is the dark state compensation mode, the first dark state compensation data corresponding to the dark state compensation mode is obtained from the storage module; The luminance of each light-emitting pixel in the first display area is compensated according to the first dark state compensation data; wherein, the first dark state compensation data is used to compensate the first display area to reduce the brightness difference between the first display area and the normal display area; When the compensation mode corresponding to the first display area is a dark compensation mode, obtaining the first dark compensation data corresponding to the dark compensation mode from the storage module further includes: Get the current refresh rate; When the compensation mode corresponding to the first display area is dark compensation mode, the first dark compensation data corresponding to the current refresh rate is obtained from multiple sets of first dark compensation data in the storage module.

2. The method for improving the brightness of a display panel according to claim 1, characterized in that, The display panel further includes a second display area, and the method further includes: The compensation mode corresponding to the second display area is determined based on the second luminance of the second display area; When the compensation mode corresponding to the second display area is dark compensation mode, the second dark compensation data corresponding to the dark compensation mode is obtained from the storage module; the first dark compensation data and the second dark compensation data are inconsistent. The luminance of each luminous pixel in the second display area is compensated based on the second dark state compensation data.

3. The method for improving the brightness of a display panel according to claim 2, characterized in that, The light transmittance of the first display area is greater than that of the second display area; The brightness gain of each light-emitting pixel in the first display area is less in the normal compensation mode than in the dark compensation mode; The brightness gain of each luminous pixel in the second display area is greater in normal compensation mode than in dark compensation mode.

4. The method for improving the brightness of a display panel according to claim 3, characterized in that, The brightness gain of each luminous pixel in the first display area is less than the brightness gain when the first luminous brightness is a first brightness value; the first brightness value and the second brightness value are located within the luminous brightness range corresponding to the dark state compensation mode, and the first brightness value is greater than the second brightness value.

5. The method for improving the brightness of a display panel according to claim 3, characterized in that, The brightness gain of each luminous pixel in the second display area is greater than the brightness gain when the second luminous brightness is the first brightness value than when the second luminous brightness is the second brightness value; the first brightness value and the second brightness value are located within the luminous brightness range corresponding to the dark state compensation mode, and the first brightness value is greater than the second brightness value.

6. The method for improving the brightness of a display panel according to claim 3, characterized in that, The compensation mode includes at least a normal compensation mode, a first dark mode, and a second dark mode, wherein the luminous intensity range corresponding to the first dark mode is greater than the luminous intensity range corresponding to the second dark mode. The brightness gain of each light-emitting pixel in the first display area is less in the first dark mode than in the second dark mode; The brightness gain of each luminous pixel in the second display area is greater in the first dark mode than in the second dark mode.

7. The method for improving the brightness of a display panel according to claim 1, characterized in that, The step of determining the compensation mode corresponding to the first display area based on the first luminance of the first display area includes: Obtain the target brightness value corresponding to the maximum grayscale level of the bound point; Based on the target brightness value and the current grayscale of each light-emitting pixel in the first display area, determine the brightness register value corresponding to each light-emitting pixel; The compensation mode corresponding to the first display area is determined based on the first correspondence and the brightness register value corresponding to each light-emitting pixel; the first correspondence is the correspondence between the brightness register value and the compensation mode.

8. A brightness adjustment device for a display panel, characterized in that, The display panel includes a first display area and a normal display area; the pixel circuit for driving the light-emitting element to emit light in the first display area is disposed outside the first display area; the pixel circuit for driving the light-emitting element to emit light in the normal display area is disposed inside the normal display area; the signal trace length between the light-emitting element in the first display area and the pixel circuit driving it to emit light is greater than the signal trace length in the normal display area. The device includes: The first compensation setting module is used to determine the compensation mode corresponding to the first display area based on the first luminous brightness of the first display area; the compensation mode includes a normal compensation mode and at least one dark state compensation mode. The first compensation data acquisition module is used to acquire the first dark state compensation data corresponding to the dark state compensation mode from the storage module when the compensation mode corresponding to the first display area is the dark state compensation mode. The first compensation control module is used to compensate the luminance of each light-emitting pixel in the first display area according to the first dark state compensation data; wherein, the first dark state compensation data is used to compensate the first display area to reduce the brightness difference between the first display area and the normal display area; The first compensation data acquisition module is also used to acquire the current refresh rate; when the compensation mode corresponding to the first display area is the dark compensation mode, it acquires the first dark compensation data corresponding to the current refresh rate from multiple sets of first dark compensation data in the storage module.

9. A brightness adjustment device for a display panel, characterized in that, The brightness adjustment device of the display panel includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the brightness improvement method of the display panel as described in any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer storage medium stores computer program instructions, which, when executed by a processor, implement the brightness improvement method for the display panel as described in any one of claims 1-7.

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