Display device, method of improving residual image of display area, and electronic device

Abstract

The application provides a display device, a method for improving residual image of a display area and an electronic equipment, the method for improving residual image of the display area comprises the following steps: acquiring a current display mode, a gray scale value and a window value of the display area; in response to determining that the display mode is a high-brightness display mode, obtaining a brightness ratio of the display area according to the window value, determining a gray scale compensation value, calculating a gray scale correction compensation value according to the brightness ratio and the gray scale compensation value; and performing gray scale compensation on the gray scale value by using the gray scale correction compensation value. The display device, the method for improving residual image of the display area and the electronic equipment provided by the application are simple and convenient, can effectively improve the residual image problem of the light-emitting device in the high-brightness display mode, obtain a picture with normal display effect, avoid visual defects, and provide a good user experience.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device, a method for improving image retention in a display area, and an electronic device. Background Technology

[0002] With the development of the information society, a large number of technologies have been developed in the field of display devices that display visual information as images. These devices use light-emitting devices such as OLEDs (Organic Light-Emitting Diodes), QLEDs (Quantum Dot Light-Emitting Diodes), or Micro LEDs (Micro Light-Emitting Diodes) to display images. However, during long-term use, the materials of these light-emitting devices deteriorate, resulting in image retention in the display area. Related technologies employ compensation techniques, such as the commonly used DBI (Deburn-in) algorithm, to compensate for the grayscale of the input image, achieving the desired effect and avoiding visual defects. Furthermore, users also use different display modes depending on their needs. When the display area is in a high-brightness mode, if grayscale compensation is still performed using the DBI algorithm, image retention will still occur. Therefore, there is an urgent need for a method and device to improve image retention in the display area even in high-brightness display mode. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a display device, a method for improving image retention in a display area, and an electronic device.

[0004] A first aspect of this application provides a display device, comprising: a display panel including a plurality of pixels, each pixel being connected to a pixel driving circuit; a driving controller connected to the display panel and configured to acquire a current display mode, grayscale value, and window value of a display area of ​​the display panel; in response to determining that the display mode is a high-brightness display mode, obtaining a brightness ratio of the display area based on the window value, determining a grayscale compensation value, calculating a grayscale correction compensation value based on the brightness ratio and the grayscale compensation value; performing grayscale compensation on the grayscale value using the grayscale correction compensation value, and driving the pixel driving circuit according to the compensated grayscale value to make the pixel emit light.

[0005] In some embodiments, the drive controller is further configured to, in response to determining that the display mode is a normal display mode, determine a grayscale compensation value, perform a balanced adjustment of the brightness of the display area using a dynamic voltage control method, and obtain an adjusted grayscale value; perform grayscale compensation on the adjusted grayscale value using the grayscale compensation value, and drive the pixel drive circuit according to the compensated grayscale value to make the pixel emit light.

[0006] In some embodiments, the drive controller includes a luminance ratio calculation unit configured to obtain the luminance ratio based on the window value and a pre-acquired luminance ratio-window value correspondence.

[0007] In some embodiments, the drive controller includes a grayscale compensation value calculation unit, which is configured to obtain the grayscale compensation value based on the grayscale value and a pre-acquired grayscale compensation value-grayscale value correspondence.

[0008] In some implementations, the grayscale compensation value calculation unit is configured to obtain the grayscale compensation value-temperature value correspondence under the grayscale value, and obtain the current temperature value of the display area; and obtain the grayscale compensation value according to the temperature value and the grayscale compensation value-temperature value correspondence.

[0009] In some implementations, the grayscale compensation value calculation unit is configured to obtain the correspondence between grayscale compensation value and working time under the grayscale value, and obtain the current working time of the display area; and obtain the grayscale compensation value according to the working time and the correspondence between grayscale compensation value and working time.

[0010] In some implementations, the grayscale compensation value calculation unit is configured to obtain the correspondence between the grayscale compensation value and the threshold voltage change under the grayscale value, and obtain the current threshold voltage change of the display area; and obtain the grayscale compensation value based on the threshold voltage change and the correspondence between the compensation value and the threshold voltage change.

[0011] A second aspect of this application provides a method for improving image retention in a display area, comprising: acquiring the current display mode, grayscale value, and window value of the display area; in response to determining that the display mode is a high-brightness display mode, obtaining the brightness ratio of the display area based on the window value, determining a grayscale compensation value, calculating a grayscale correction compensation value based on the brightness ratio and the grayscale compensation value; and performing grayscale compensation on the grayscale value using the grayscale correction compensation value.

[0012] In some embodiments, the method for improving image retention in the display area further includes: in response to determining that the display mode is a normal display mode, determining a grayscale compensation value, adjusting the brightness of the display area using a dynamic voltage control method to obtain an adjusted grayscale value; and performing grayscale compensation on the adjusted grayscale value using the grayscale compensation value.

[0013] In some implementations, obtaining the brightness ratio of the display area based on the window value includes: obtaining the brightness ratio based on the window value and a pre-acquired brightness ratio-window value correspondence.

[0014] In some implementations, determining the grayscale compensation value includes: obtaining the grayscale compensation value based on the grayscale value and a pre-acquired correspondence between the grayscale compensation value and the grayscale value.

[0015] In some implementations, determining the grayscale compensation value includes: obtaining the grayscale compensation value-temperature value correspondence under the grayscale value, and obtaining the current temperature value of the display area; obtaining the grayscale compensation value based on the temperature value and the grayscale compensation value-temperature value correspondence.

[0016] In some implementations, determining the grayscale compensation value includes: obtaining the correspondence between the grayscale compensation value and working time under the grayscale value, and obtaining the current working time of the display area; and obtaining the grayscale compensation value based on the working time and the correspondence between the grayscale compensation value and working time.

[0017] In some implementations, determining the grayscale compensation value includes: obtaining the correspondence between the grayscale compensation value and the threshold voltage change under the grayscale value, and obtaining the current threshold voltage change of the display area; and obtaining the grayscale compensation value based on the threshold voltage change and the correspondence between the compensation value and the threshold voltage change.

[0018] A third aspect of this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method for improving display area afterimages as described in the second aspect above.

[0019] A fourth aspect of this application provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method for improving display area retention as described in the second aspect above.

[0020] As can be seen from the above description, this application provides a display device, a method for improving image retention in a display area, and an electronic device. By acquiring the current display mode, grayscale value, and window value of the display area, a basis is provided for grayscale value compensation. When the display mode is a high-brightness display mode, a grayscale correction compensation value is calculated using the grayscale compensation value and the brightness ratio. The grayscale value is then compensated using the grayscale correction compensation value. The pixel driving circuit is driven according to the compensated grayscale value to make the pixel emit light. This avoids undercompensation of grayscale, ensuring that the brightness of the light-emitting device is not affected by degradation in the high-brightness display mode, resulting in a normal display effect and avoiding visual defects. This display device, method for improving image retention in a display area, and electronic device are simple and convenient, effectively improving the image retention problem of the light-emitting device in the high-brightness display mode, obtaining a normal display effect, avoiding visual defects, and providing a good user experience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart illustrating a method for improving image retention in a display area according to an embodiment of this application.

[0023] Figure 2 This is a schematic diagram illustrating the correspondence between brightness ratio and window value in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of a display device according to an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] With the development of the information society, numerous technologies have been developed in the field of display devices that display visual information as images. These devices utilize light-emitting devices such as OLEDs (Organic Light-Emitting Diodes), QLEDs (Quantum Dot Light-Emitting Diodes), or Micro LEDs (Micro Light-Emitting Diodes) to display images. For example, OLEDs are characterized by their thinness, wide viewing angle, low power consumption, and fast response time. Combined with TFT (Thin Film Transistor) backplane technology, they can be used to create displays with a matrix pixel arrangement that refresh images using progressive scan, known as AMOLEDs (Active Matrix Organic Light-Emitting Diodes), offering excellent display quality. However, over long-term use, the materials in the light-emitting devices degrade, resulting in image retention in the display area.

[0029] In the display area of ​​a light-emitting device, whether a pixel at a specific location emits light and how bright it is depends on the displayed image. Pixels that do not emit light or have low brightness have very small current and their device deteriorates very slowly. On the other hand, pixels that emit light and have higher brightness have larger current and their device deteriorates faster. Therefore, pixels at different locations deteriorate to different degrees, and the display area shows the imprint of the original image. This is the so-called long-term image retention, which can cause visual defects.

[0030] To improve the image retention problem, one approach is to optimize the material properties and structure of the device to fundamentally slow down the degradation process of the light-emitting device. Another approach is to use compensation techniques, which make the degradation less noticeable to the human eye, even though the material is still deteriorating.

[0031] Clearly, the first method belongs to the field of materials and processes, which fundamentally solves the problem and represents a long-term technological development direction. However, this technology is developing slowly and currently has a poor effect on improving image retention. The second method belongs to the field of drive control and is an indirect improvement method with quick results. For example, the commonly used DBI (Deburn in) algorithm calculates grayscale compensation values ​​(DBI Count) based on image data. The higher the degree of degradation of the light-emitting device, the larger the grayscale compensation value. The grayscale of the input image is compensated based on the grayscale compensation value to adjust the image and avoid visual defects.

[0032] In addition, when the light-emitting device is working, it also uses the VDC (Voltage Dynamic Control) algorithm to adjust the display brightness. The VDC algorithm can keep the display brightness of different window values ​​consistent with the display brightness when the window value is 100%, so as to improve the user experience.

[0033] When using light-emitting devices, users will adopt different display modes according to their needs. As shown in Table 1, when the display mode of the display area is Normal Mode, the VDC algorithm will be enabled. The display brightness of the window value is not 100% and is the same as the display brightness of the window value of 100% to improve the user experience. At this time, the degree of image retention of devices with different window values ​​is similar. Therefore, gray levels with window values ​​not of 100% can be compensated according to the gray level compensation value of the window value of 100% to obtain an image with normal display effect. However, when the display mode is High Brightness Mode (HBM mode), the VDC algorithm needs to be turned off so that the display brightness of the display area with smaller window values ​​is higher to meet the user's high brightness needs. However, the higher the brightness, the more serious the device degradation. If gray levels with window values ​​not of 100% are still compensated according to the gray level compensation value of the window value of 100%, it will cause undercompensation, and the image will still have image retention, thus affecting the user experience. Therefore, there is an urgent need for a method and device to improve the image retention of the display area of ​​the light-emitting device in high brightness mode.

[0034] Table 1. Data on Afterimage Improvement by Related Technologies

[0035]

[0036]

[0037] The following describes specific embodiments in conjunction with... Figures 1 to 4 The technical solution of this application will be described in detail below.

[0038] Some embodiments of this application provide a method for improving display area ghosting, such as Figure 1 As shown, it includes the following steps:

[0039] S1. Get the current display mode, grayscale value, and window value of the display area.

[0040] The display area of ​​the light-emitting device is, for example, a display screen area, etc., and there is no specific limitation.

[0041] Display modes include, for example, Normal Mode and HBM mode, etc., without any specific limitations.

[0042] Grayscale represents different brightness levels from the darkest to the brightest. The more intermediate levels there are, the more delicate the image effect can be. By controlling the grayscale value, signal input control can be performed to adjust the corresponding display brightness. The higher the grayscale value, the brighter the display.

[0043] The window value represents the display area of ​​the screen. When the window value is 100%, the screen displays the full range.

[0044] By obtaining the current display mode, grayscale value, and window value of the display area, a basis is provided for adjusting the display screen.

[0045] S2. In response to determining that the display mode is a high-brightness display mode, the brightness ratio of the display area is obtained according to the window value, the grayscale compensation value is determined, and the grayscale correction compensation value is calculated according to the brightness ratio and the grayscale compensation value.

[0046] When the light-emitting device is in high-brightness display mode, if the window value is not 100%, the voltage drop is smaller, and the brightness will be higher than when the window value is 100%, resulting in more severe degradation of the device material. Therefore, a higher grayscale compensation value is needed to improve image retention.

[0047] The grayscale compensation value can be directly determined by the DBI panel burn-in removal method. The DBI panel burn-in removal method mainly calculates the grayscale compensation value based on the current grayscale value. The grayscale compensation value will also be affected by the display temperature, working time and threshold voltage changes, etc., and there are no specific limitations.

[0048] The increase in grayscale compensation value can be replaced by the brightness ratio. The brightness ratio is the ratio of the brightness of the current window value to the brightness when the window value is 100%. The brightness ratio can be obtained based on the window value. If the current window value is 100%, the brightness ratio is 1. If the current window value is less than 100%, the brightness ratio is greater than 1.

[0049] The grayscale correction compensation value can be obtained by multiplying the grayscale compensation value by the brightness ratio, that is, grayscale correction compensation value = grayscale compensation value * brightness ratio, which provides the basis for grayscale compensation.

[0050] S3. Perform grayscale compensation on the grayscale value using the grayscale correction compensation value.

[0051] As shown in Table 2, the grayscale value can be obtained by adding the grayscale correction compensation value to the original grayscale value. This can avoid undercompensation of grayscale, so that the brightness of the light-emitting device in the high-brightness display mode is not affected by the degradation, and a normal display effect can be obtained, avoiding visual defects.

[0052] Table 2. Data on image improvement in this scheme.

[0053]

[0054] This method for improving image retention in the display area is simple and convenient. It can effectively improve the image retention problem of light-emitting devices in high-brightness display mode, obtain a picture with normal display effect, avoid visual defects, and provide a good user experience.

[0055] In some embodiments, the method for improving display area afterimages further includes:

[0056] S4. In response to determining that the display mode is a normal display mode, determine the grayscale compensation value, adjust the brightness of the display area by means of VDC dynamic voltage control method, and obtain the adjusted grayscale value.

[0057] When the display mode is normal, the brightness of the display area needs to be adjusted using the VDC dynamic voltage control method to make the brightness consistent with the display brightness when the window value is 100% in order to improve the user experience. The corresponding grayscale value after adjustment will be less than or equal to the grayscale value before adjustment.

[0058] The grayscale compensation value can be directly determined by the DBI panel de-branding method. This grayscale compensation value is determined in the same way as the grayscale compensation value in the aforementioned high-brightness display mode. This grayscale compensation value can also be understood as the correction compensation value when the brightness ratio is 1, which will not be elaborated here.

[0059] S5. Perform grayscale compensation on the adjusted grayscale value using the grayscale compensation value.

[0060] By applying grayscale compensation values ​​to the adjusted grayscale values, a normal image can be obtained, avoiding visual defects.

[0061] In some implementations, obtaining the brightness ratio of the display area based on the window value includes:

[0062] S21. The brightness ratio is obtained according to the window value and the pre-acquired brightness ratio-window value correspondence.

[0063] The luminance ratio-window value correspondence can be obtained in advance. For example, the luminance of the light-emitting device at different window values ​​can be measured, and then the luminance can be divided by the luminance when the window value is 100% to obtain the corresponding luminance ratio. Figure 2 As shown, the brightness ratio of four OLED light-emitting device samples from the same batch was tested, and the corresponding brightness ratio-window value relationship curves were obtained. The brightness ratio-window value relationship curves were fitted using methods such as the least squares method to obtain the corresponding relationship between brightness ratio y and window value x, as shown by the dashed line in the figure, i.e., y = ax. 2 The relationship between the luminance ratio and the window value is a quadratic equation, where a, b, and c are constants that can be obtained from actual testing. The luminance ratio of this light-emitting device sample is 1 when the window value is 100% and 1.3 when the window value is 10%.

[0064] The brightness ratio is obtained by using the window value and the pre-acquired brightness ratio-window value correspondence, which provides a basis for calculating the grayscale correction compensation value.

[0065] In some implementations, determining the grayscale compensation value includes:

[0066] S22-1. The grayscale compensation value is obtained according to the grayscale value and the pre-acquired grayscale compensation value-grayscale value correspondence.

[0067] The DBI panel burn-in removal method can calculate the corresponding grayscale compensation value based on the current grayscale value. Different grayscale values ​​require different grayscale compensation values ​​for display areas. The higher the grayscale value of the display area, the greater the brightness, and the greater the grayscale compensation required.

[0068] The grayscale compensation value-grayscale value correspondence can be obtained in advance. For example, it can be obtained by conducting compensation tests on the light-emitting device at different grayscale values. For example, for a 256 grayscale display screen, when the grayscale value is 250, the grayscale value is compensated from low to high to adjust the display effect of the display area. The minimum compensation value when the display effect is normal is the corresponding grayscale compensation value. By analogy, the grayscale compensation value-grayscale value correspondence table shown in Table 3 is obtained. For example, when the grayscale value is in the range of 255G to 241G, the grayscale compensation value required within 10 seconds of the compensation test is 7G. At this time, if the window value is 100%, the brightness ratio is 1, and the corresponding grayscale correction compensation value is also 7; if the window value is 10%, the brightness ratio is 1.3, and the corresponding grayscale correction compensation value is 9. In addition, the grayscale compensation value-grayscale value correspondence can also be expressed as a functional relationship like the brightness ratio-window value correspondence, which will not be elaborated here.

[0069] The grayscale compensation value is obtained based on the grayscale value and the pre-acquired grayscale compensation value-grayscale value correspondence, which provides a basis for calculating the grayscale correction compensation value.

[0070] Table 3. Correspondence between Gray Scale Compensation Value and Gray Scale Value

[0071] Grayscale value (G) Grayscale compensation value (G) 255-241 7 240-226 6 225-211 5 210-196 4 195-181 3 180-176 2 175-161 1 161-0 0

[0072] In some implementations, determining the grayscale compensation value includes:

[0073] S22-2. Obtain the correspondence between grayscale compensation value and temperature value under the grayscale value, and obtain the current temperature value of the display area.

[0074] The DBI panel burn-in removal method can also calculate the corresponding grayscale compensation value based on the current grayscale value and temperature of the display area. Different display areas require different grayscale compensation values; the higher the temperature, the more severe the degradation, and the greater the compensation required.

[0075] The grayscale compensation value-temperature value correspondence can be obtained in advance for different grayscale values. This correspondence can be obtained through compensation testing. For example, when the grayscale value is 250G, the grayscale compensation value required for the display area at different temperatures can be measured. For example, if the display area temperature is 30℃, the grayscale value is compensated from low to high to adjust the display effect of the display area. The minimum compensation value when the display effect is normal is the corresponding grayscale compensation value. This process is repeated to obtain the grayscale compensation value-temperature value correspondence for that grayscale value. Then, tests are performed for all grayscale values ​​to obtain the grayscale compensation value-temperature value correspondence for different grayscale values. Based on the grayscale value, the grayscale compensation value-temperature value correspondence for that grayscale value is obtained, and the current temperature value of the display area is obtained, providing a basis for calculating the grayscale compensation value.

[0076] S22-3. Obtain the grayscale compensation value based on the temperature value and the correspondence between the grayscale compensation value and the temperature value.

[0077] The grayscale compensation value is obtained by establishing a correspondence between temperature value and grayscale compensation value-temperature value. This method provides a better compensation effect than relying solely on grayscale values ​​and also serves as a basis for calculating grayscale correction compensation values.

[0078] In some implementations, determining the grayscale compensation value includes:

[0079] S22-4. Obtain the correspondence between grayscale compensation value and working time under the grayscale value, and obtain the current working time of the display area.

[0080] The DBI panel burn-in removal method can also calculate the corresponding grayscale compensation value based on the current grayscale value of the display area and the working time. Different working times of the display area require different grayscale compensation values. The longer the working time, the more severe the degradation, and the greater the compensation required.

[0081] The grayscale compensation value-working time correspondence can be obtained in advance for different grayscale values. This correspondence can be obtained through compensation testing. For example, when the grayscale value is 250G, the grayscale compensation value required for the display area at different working times can be measured. For example, if the working time is 60s, the grayscale value is compensated from low to high to adjust the display effect of the display area. The minimum compensation value when the display effect is normal is the corresponding grayscale compensation value. This process is repeated to obtain the grayscale compensation value-working time correspondence for that grayscale value. Then, tests are performed for all grayscale values ​​to obtain the grayscale compensation value-working time correspondence for different grayscale values. Based on the grayscale value, the grayscale compensation value-working time correspondence for that grayscale value is obtained, and the current working time of the display area is obtained, providing a basis for calculating the grayscale compensation value.

[0082] S22-5. Obtain the grayscale compensation value based on the working time and the correspondence between the grayscale compensation value and the working time.

[0083] The grayscale compensation value is obtained by calculating the correspondence between working time and grayscale compensation value and working time. This method provides a better compensation effect than the grayscale compensation value obtained by relying solely on the grayscale value and provides a basis for calculating the grayscale correction compensation value.

[0084] In some implementations, determining the grayscale compensation value includes:

[0085] S22-6. Obtain the correspondence between the grayscale compensation value and the threshold voltage change under the grayscale value, and obtain the current threshold voltage change of the display area.

[0086] The DBI panel burn-in removal method can also calculate the corresponding grayscale compensation value based on the current grayscale value of the display area and the change in threshold voltage. Different changes in threshold voltage in the display area require different grayscale compensation values. The greater the change in threshold voltage, the lower the luminous efficiency of the device, and the greater the compensation required.

[0087] The correspondence between grayscale compensation value and threshold voltage change can be obtained in advance for different grayscale values. This correspondence can be obtained through compensation testing. For example, when the grayscale value is 250G, the grayscale compensation value required for the display area at different working times can be measured. For example, if the threshold voltage change is 0.5V, the grayscale value is compensated from low to high to adjust the display effect of the display area. The minimum compensation value when the display effect is normal is the corresponding grayscale compensation value. This process is repeated to obtain the correspondence between grayscale compensation value and threshold voltage change for that grayscale value. Then, tests are performed for all grayscale values ​​to obtain the correspondence between grayscale compensation value and threshold voltage change for different grayscale values. Based on the grayscale value, the correspondence between grayscale compensation value and threshold voltage change for that grayscale value is obtained, and the current working time of the display area is obtained, providing a basis for calculating the grayscale compensation value.

[0088] S22-7. Obtain the grayscale compensation value based on the relationship between the threshold voltage change and the compensation value - threshold voltage change.

[0089] The grayscale compensation value is obtained by using the relationship between the threshold voltage change and the grayscale compensation value - threshold voltage change. This method provides a better compensation effect than the grayscale compensation value obtained solely based on the grayscale value, and also provides a basis for calculating the grayscale correction compensation value.

[0090] Based on the same inventive concept, this application also provides a display device, see reference. Figure 3 The system includes: a display panel 1, comprising multiple pixels, each pixel being connected to a pixel driving circuit; and a driving controller 2, connected to the display panel 1, configured to acquire the current display mode, grayscale value, and window value of the display area of ​​the display panel; in response to determining that the display mode is a high-brightness display mode, obtaining the brightness ratio of the display area based on the window value, determining a grayscale compensation value, calculating a grayscale correction compensation value based on the brightness ratio and the grayscale compensation value; performing grayscale compensation on the grayscale value using the grayscale correction compensation value, and driving the pixel driving circuit according to the compensated grayscale value to make the pixel emit light.

[0091] Display panel 1 is, for example, an OLED display panel, and drive controller 2 is, for example, an SSD1306, with no specific limitation. Drive controller 2 is connected to display panel 1, can obtain the characteristic parameters of display panel 1, and control the pixels to emit light through the pixel driving circuit to realize the display of the image.

[0092] This display device can avoid pixel under-compensation for light emission, effectively improve the image retention problem in high-brightness display mode, obtain a normal display effect, avoid visual defects, and provide a good user experience.

[0093] In some embodiments, the drive controller 2 is further configured to, in response to determining that the display mode is a normal display mode, determine a grayscale compensation value, perform a balanced adjustment of the brightness of the display area using a dynamic voltage control method, and obtain an adjusted grayscale value; perform grayscale compensation on the adjusted grayscale value using the grayscale compensation value, and drive the pixel drive circuit according to the compensated grayscale value to make the pixel emit light.

[0094] In some embodiments, the drive controller 2 includes a luminance ratio calculation unit 2-1, which is configured to obtain the luminance ratio based on the window value and a pre-acquired luminance ratio-window value correspondence.

[0095] In some embodiments, the drive controller 2 includes a grayscale compensation value calculation unit 2-2, which is configured to obtain the grayscale compensation value based on the grayscale value and a pre-acquired grayscale compensation value-grayscale value correspondence.

[0096] In some embodiments, the grayscale compensation value calculation unit 2-2 is configured to obtain the grayscale compensation value-temperature value correspondence under the grayscale value, and obtain the current temperature value of the display area; and obtain the grayscale compensation value according to the temperature value and the grayscale compensation value-temperature value correspondence.

[0097] In some embodiments, the grayscale compensation value calculation unit 2-2 is configured to obtain the correspondence between grayscale compensation value and working time under the grayscale value, and obtain the current working time of the display area; and obtain the grayscale compensation value according to the working time and the correspondence between grayscale compensation value and working time.

[0098] In some embodiments, the grayscale compensation value calculation unit 2-2 is configured to obtain the correspondence between the grayscale compensation value and the threshold voltage change under the grayscale value, and obtain the current threshold voltage change of the display area; and obtain the grayscale compensation value according to the threshold voltage change and the correspondence between the compensation value and the threshold voltage change.

[0099] The display device described above is used to implement the corresponding method for improving display area retention in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0100] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for improving display area afterimages as described in any of the above embodiments.

[0101] Figure 4 This embodiment illustrates a more specific hardware structure of an electronic device, which may include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, memory 1020, input / output interface 1030, and communication interface 1040 are interconnected internally via the bus 1050.

[0102] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0103] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0104] The input / output interface 1030 is used to connect input / output modules to realize information input and output. The input / output modules can be configured as components within the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input devices can include keyboards, mice, touchscreens, microphones, various sensors, etc., and the output devices can include displays, speakers, vibrators, indicator lights, etc.

[0105] The communication interface 1040 is used to connect a communication module (not shown in the figure) to enable communication and interaction between this device and other devices. The communication module can communicate via wired means (e.g., USB, Ethernet cable, etc.) or wireless means (e.g., mobile network, WIFI, Bluetooth, etc.).

[0106] Bus 1050 includes a pathway for transmitting information between various components of the device, such as processor 1010, memory 1020, input / output interface 1030, and communication interface 1040.

[0107] It should be noted that although the above-described device only shows the processor 1010, memory 1020, input / output interface 1030, communication interface 1040, and bus 1050, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0108] The electronic devices described above are used to implement the corresponding methods for improving display area retention in any of the foregoing embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0109] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method for improving display area retention as described in any of the above embodiments.

[0110] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0111] The computer instructions stored in the storage medium of the above embodiments are used to cause the computer to perform the method for improving display area retention as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0112] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0113] Furthermore, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the apparatus may be shown in block diagram form. This is to prevent the embodiments of this application from being difficult to understand, and it also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully within the understanding of those skilled in the art). In setting forth specific details to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0114] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0115] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: The display panel includes multiple pixels, and each pixel is connected to a pixel driving circuit. A drive controller, connected to the display panel, is configured to acquire the current display mode, grayscale value, and window value of the display area of ​​the display panel; in response to determining that the display mode is a high-brightness display mode, it obtains the brightness ratio of the display area based on the window value, determines the grayscale compensation value, and calculates the grayscale correction compensation value based on the brightness ratio and the grayscale compensation value. The grayscale value is compensated using the grayscale correction compensation value, and the pixel driving circuit is driven according to the compensated grayscale value to make the pixel emit light; wherein, the window value is the display range of the display area, and the brightness ratio is the ratio of the brightness of the current window value to the brightness when the window value is 100%.

2. The display device according to claim 1, characterized in that, The drive controller is also configured to, in response to determining that the display mode is a normal display mode, determine a grayscale compensation value, balance and adjust the brightness of the display area using a dynamic voltage control method, and obtain the adjusted grayscale value. The adjusted grayscale value is compensated using the grayscale compensation value, and the pixel driving circuit is driven according to the compensated grayscale value to make the pixel emit light.

3. The display device according to claim 1, characterized in that, The drive controller includes a luminance ratio calculation unit, which is configured to obtain the luminance ratio based on the window value and a pre-acquired luminance ratio-window value correspondence.

4. The display device according to claim 1, characterized in that, The drive controller includes a grayscale compensation value calculation unit, which is configured to obtain the grayscale compensation value based on the grayscale value and a pre-acquired grayscale compensation value-grayscale value correspondence.

5. The display device according to claim 1, characterized in that, The drive controller includes a grayscale compensation value calculation unit, which is configured to obtain the correspondence between the grayscale compensation value and the temperature value under the grayscale value, and to obtain the current temperature value of the display area. The grayscale compensation value is obtained based on the temperature value and the correspondence between the grayscale compensation value and the temperature value.

6. The display device according to claim 1, characterized in that, The drive controller includes a grayscale compensation value calculation unit, which is configured to obtain the grayscale compensation value-working time correspondence under the grayscale value, and obtain the current working time of the display area; and obtain the grayscale compensation value according to the working time and the grayscale compensation value-working time correspondence.

7. The display device according to claim 1, characterized in that, The drive controller includes a grayscale compensation value calculation unit, which is configured to obtain the correspondence between the grayscale compensation value and the threshold voltage change under the grayscale value, and obtain the current threshold voltage change of the display area; and obtain the grayscale compensation value according to the threshold voltage change and the correspondence between the compensation value and the threshold voltage change.

8. A method for improving image retention in a display area, characterized in that, include: Get the current display mode, grayscale value, and window value of the display area; In response to determining that the display mode is a high-brightness display mode, the brightness ratio of the display area is obtained according to the window value, a grayscale compensation value is determined, and a grayscale correction compensation value is calculated based on the brightness ratio and the grayscale compensation value. The grayscale value is compensated using the grayscale correction compensation value; Wherein, the window value is the display range of the display area, and the brightness ratio is the ratio of the brightness of the current window value to the brightness when the window value is 100%.

9. The method for improving image retention in a display area according to claim 8, characterized in that, Also includes: In response to determining that the display mode is a normal display mode, a grayscale compensation value is determined, and the brightness of the display area is balanced and adjusted using a dynamic voltage control method to obtain the adjusted grayscale value. The adjusted grayscale value is compensated using the grayscale compensation value.

10. The method for improving image retention in a display area according to claim 8, characterized in that, The determination of the grayscale compensation value includes: The grayscale compensation value is obtained based on the grayscale value and the pre-acquired grayscale compensation value-grayscale value correspondence. Alternatively, obtain the correspondence between grayscale compensation value and temperature value at the grayscale value, and obtain the current temperature value of the display area; obtain the grayscale compensation value based on the temperature value and the correspondence between grayscale compensation value and temperature value. Alternatively, obtain the correspondence between the grayscale compensation value and the working time at the grayscale value, and obtain the current working time of the display area; obtain the grayscale compensation value based on the working time and the correspondence between the grayscale compensation value and the working time. Alternatively, obtain the correspondence between the grayscale compensation value and the threshold voltage change at the grayscale value, and obtain the current threshold voltage change of the display area; obtain the grayscale compensation value based on the threshold voltage change and the correspondence between the compensation value and the threshold voltage change.

11. An electronic device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method for improving display area afterimages as described in any one of claims 8-10.

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