Brightness determination method and apparatus, display panel, electronic device, and storage medium

Abstract

A brightness determination method, device, display panel, electronic device and computer readable storage medium. The brightness determination method comprises: determining, based on a to-be-displayed image, first display brightnesses respectively corresponding to a plurality of pixels of a display panel; determining, based on the first display brightnesses of the plurality of pixels, a reference average image level; and determining, based on the reference average image level and relationship information about the average image level and the highest display brightness, a target highest display brightness corresponding to the display panel during display of the to-be-displayed image. The relationship information comprises information about the change of the highest display brightness with the value of the average image level in at least two segmented intervals corresponding to the average image level; the change rate of the highest display brightness with the average image level is different in different segmented intervals; and the highest display brightness decreases with the increase of the average image level in at least one segmented interval. The method can reduce power consumption and ensure display effect.

Description

Technical Field

[0001] Embodiments of this disclosure relate to a brightness determination method, a brightness determination device, a display panel, an electronic device, and a computer-readable storage medium. Background Technology

[0002] With the continuous development of display technology, display panels have become deeply integrated into people's work and daily lives. For example, they are used in televisions, computers, and smart home devices. Commonly used display panels include liquid crystal displays (LCDs) and OLED (Organic Light-Emitting Diode) displays. OLED displays have received increasing attention due to their advantages such as high contrast, flexibility, and fast response time. Summary of the Invention

[0003] At least one embodiment of this disclosure provides a brightness determination method for a display panel, the display panel including a plurality of pixels. The method includes: determining a first display brightness corresponding to each of the plurality of pixels based on an image to be displayed; determining a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to each of the plurality of pixels; and determining a target maximum display brightness corresponding to the display panel during the display of the image to be displayed based on the reference average image level and information about the relationship between the average image level and a maximum display brightness. The average image level corresponds to a value range including at least two segmented intervals, and the relationship information includes information about the change in the maximum display brightness with respect to the average image level in the at least two segmented intervals; the rate of change of the maximum display brightness with respect to the average image level differs in different segmented intervals; and in at least one segmented interval, the maximum display brightness decreases as the average image level increases.

[0004] For example, in a brightness determination method provided in one embodiment of this disclosure, for any two contrasting segmented intervals among the at least two segmented intervals, where the any two contrasting segmented intervals include a first contrasting segmented interval and a second contrasting segmented interval, the maximum value of the average image level in the first contrasting segmented interval is less than or equal to the minimum value of the average image level in the second contrasting segmented interval. The rate of change of the highest display brightness in the first contrasting segmented interval is less than or equal to the rate of change of the highest display brightness in the second contrasting segmented interval.

[0005] For example, in a brightness determination method provided in one embodiment of this disclosure, the range of values ​​corresponding to the average image level includes a minimum value, a median value, and a maximum value, where the median value is the average of the maximum value and the minimum value. The number of segmented intervals within the range from the minimum value to the median value is greater than the number of segmented intervals within the range from the median value to the maximum value.

[0006] For example, in a brightness determination method provided in one embodiment of this disclosure, the at least two segmented intervals include a first segmented interval. In the first segmented interval, the maximum display brightness remains constant as the average image level changes, and the maximum display brightness is a predetermined brightness value.

[0007] For example, in a brightness determination method provided in one embodiment of this disclosure, the average image level value in the first segmented interval is less than the average image level value in the remaining segmented intervals other than the first segmented interval in the at least two segmented intervals.

[0008] For example, in a brightness determination method provided in an embodiment of this disclosure, the at least two segmented intervals further include a second segmented interval, a third segmented interval, and a fourth segmented interval, and the value of the average image level is continuous and increases sequentially from the first segmented interval to the fourth segmented interval. In the second segmented interval, the relationship between the maximum display brightness and the average image level is expressed as: Lmax = L*(a1-b1*APL), where Lmax is the maximum display brightness, L is the predetermined brightness value, APL is the average image level, and a1 and b1 are constants; in the third segmented interval, the relationship between the maximum display brightness and the average image level is expressed as: Lmax = L*(a2*APL) 2 -b2*APL+c2), where a2, b2 and c2 are constants; in the fourth segment interval, the relationship between the highest display brightness and the average image level is expressed as the formula: Lmax=L*(a3-b3*APL), where a3 and b3 are constants.

[0009] For example, in a brightness determination method provided in one embodiment of this disclosure, the range of values ​​corresponding to the average image level includes a minimum value, a first value, a second value, a third value, and a maximum value, wherein the first value, the second value, and the third value are located between the minimum value and the maximum value and increase sequentially. The two endpoints of the first segmented interval are the minimum value and the first value, the two endpoints of the second segmented interval are the first value and the second value, the two endpoints of the third segmented interval are the second value and the third value, and the two endpoints of the fourth segmented interval are the third value and the maximum value.

[0010] For example, in a brightness determination method provided in an embodiment of this disclosure, determining a reference average image level corresponding to the image to be displayed based on the first display brightness of the plurality of pixels includes: determining a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to the plurality of pixels respectively.

[0011] For example, in a brightness determination method provided in an embodiment of this disclosure, determining a reference average image level corresponding to the image to be displayed based on a first display brightness of the plurality of pixels includes: determining at least one target pixel among the plurality of pixels; and determining a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to the at least one target pixel.

[0012] For example, in a brightness determination method provided in an embodiment of this disclosure, determining at least one target pixel among the plurality of pixels includes: selecting pixels from the plurality of pixels whose first display brightness is greater than a brightness threshold as the at least one target pixel.

[0013] For example, in a brightness determination method provided in an embodiment of this disclosure, determining at least one target pixel among the plurality of pixels includes: determining the display color corresponding to each of the plurality of pixels based on the image to be displayed; determining at least one target display color based on the display colors corresponding to each of the plurality of pixels, wherein the ratio between the pixel displaying each target display color and the plurality of pixels is greater than a ratio threshold; and selecting the pixel corresponding to the target display color from the plurality of pixels as the at least one target pixel.

[0014] For example, one embodiment of the brightness determination method provided in this disclosure further includes: determining a plurality of second display brightness corresponding to the plurality of pixels respectively during the display of the image to be displayed, based on the target maximum display brightness; and presenting the image to be displayed based on the plurality of second display brightness.

[0015] At least one embodiment of this disclosure provides a brightness determination device for a display panel, wherein the display panel includes a plurality of pixels, and the brightness determination device includes a first determination module, a second determination module, and a third determination module. The first determination module is configured to determine a first display brightness corresponding to each of the plurality of pixels based on an image to be displayed; the second determination module is configured to determine a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to each of the plurality of pixels; and the third determination module is configured to determine a target maximum display brightness corresponding to the display panel during the display of the image to be displayed based on the reference average image level and information regarding the relationship between the average image level and the maximum display brightness. The relationship information includes information on how the maximum display brightness changes with the average image level in at least two segmented intervals; the rate of change of the maximum display brightness with the average image level differs in different segmented intervals; and the maximum display brightness decreases as the average image level increases in at least one segmented interval.

[0016] At least one embodiment of this disclosure provides a display panel including a plurality of pixels, a data driver, a gate driver, and a timing controller. The data driver is configured to provide data signals to the plurality of pixels; the gate driver is configured to provide gate scan drive signals to the plurality of pixels; and the timing controller is configured to execute a brightness determination method provided in any embodiment of this disclosure.

[0017] At least one embodiment of this disclosure provides an electronic device, including a processor; a memory configured to store one or more computer program modules; wherein the one or more computer program modules are configured to be executed by the processor, and the one or more computer program modules include instructions for implementing a brightness determination method provided in any embodiment of this disclosure.

[0018] At least one embodiment of this disclosure provides a computer-readable storage medium for storing non-transitory computer-readable instructions that, when executed by a computer, can implement the brightness determination method provided in any embodiment of this disclosure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0020] Figure 1 A schematic diagram of a display panel provided in at least one embodiment of the present disclosure is shown;

[0021] Figure 2A flowchart of a brightness determination method provided by at least one embodiment of the present disclosure is shown;

[0022] Figure 3 A schematic diagram showing the relationship between the highest display brightness and the average image level provided in at least one embodiment of the present disclosure is illustrated.

[0023] Figure 4 A schematic diagram showing the relationship between the maximum display brightness and the average image level, plotted based on the data in Table 1, is provided in at least one embodiment of this disclosure.

[0024] Figure 5 A schematic block diagram of a brightness determination device provided in at least one embodiment of the present disclosure is shown;

[0025] Figure 6 A schematic block diagram of an electronic device provided in at least one embodiment of the present disclosure is shown;

[0026] Figure 7 A schematic block diagram of another electronic device provided in at least one embodiment of the present disclosure is shown; and

[0027] Figure 8 A schematic diagram of a computer-readable storage medium provided in at least one embodiment of the present disclosure is shown. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0029] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0030] The inventors discovered that in related technologies, when determining the display brightness of each frame of an image, the brightness is usually determined based on the grayscale of each pixel in the image. Different images are all determined based on the same relationship to determine the brightness of each image during display. The higher the grayscale of the image, the greater the display brightness. Therefore, when the overall grayscale of the image is high, the overall brightness of the display panel is high, which can easily lead to excessive power consumption. Conversely, when the overall grayscale of the image is low, the display panel will display a darker image with insufficient detail.

[0031] At least one embodiment of this disclosure provides a brightness determination method, a brightness determination device, a display panel, an electronic device, and a computer-readable storage medium. The brightness determination method includes: determining a first display brightness corresponding to a plurality of pixels based on an image to be displayed; determining a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to the plurality of pixels; and determining a target maximum display brightness corresponding to the display panel during the display of the image to be displayed based on the reference average image level and information regarding the relationship between the average image level and the maximum display brightness. The range of values ​​corresponding to the average image level includes at least two segmented intervals, and the relationship information includes information on how the maximum display brightness changes with the average image level in at least two segmented intervals; the rate of change of the maximum display brightness with respect to the average image level differs in different segmented intervals; and in at least one segmented interval, the maximum display brightness decreases as the average image level increases.

[0032] According to the brightness determination method of this disclosure, by decreasing the maximum display brightness as the average image level increases in at least some segmented intervals, the overall display brightness of the image to be displayed can be appropriately reduced when the overall grayscale of the image to be displayed is high, thereby reducing power consumption and avoiding excessive power consumption due to excessive brightness. When the overall grayscale of the image to be displayed is low, the overall display brightness can be increased, thereby enhancing detail, improving contrast, and improving display effect. Furthermore, by setting different rates of change for the maximum display brightness in different segmented intervals, segmented brightness adjustment can be achieved, making brightness adjustment more flexible. For example, the brightness can be divided into several segments based on the sensitivity of the human eye to brightness changes, and a brightness change rate that conforms to the viewing comfort of the human eye can be set in different segments, which helps to improve the viewing comfort of the human eye and achieve a better viewing effect.

[0033] Figure 1 A schematic diagram of a display panel provided in at least one embodiment of the present disclosure is shown.

[0034] like Figure 1 As shown, the display panel can be an OLED display panel, which includes a pixel array 110 and a panel driver. The pixel array 110 includes multiple rows and columns of pixels Pxij arranged in an array, and the panel driver is configured to drive the pixel array 110. The panel driver may include a data driver 120, a gate driver 130, and a timing controller 140. The brightness determination method of this embodiment can be executed by the timing controller 140, for example.

[0035] For example, in some examples, the pixel array 110 may also include multiple scan signal lines (e.g., GL1 to GLm) and multiple data signal lines (e.g., DL1 to DLn) connected to multiple rows and columns of pixels. Here, i, j, m, and n are all positive integers.

[0036] For example, in some examples, multiple scan signal lines GL1 to GLm extend in a first direction (e.g., horizontal direction) of the display panel, and multiple data signal lines DL1 to DLn extend in a second direction (e.g., vertical direction) of the display panel. The first and second directions intersect; for example, the first direction is perpendicular to the second direction. The multiple data signal lines are configured to intersect with the multiple scan signal lines.

[0037] For example, in some examples, each pixel Pxij within the pixel array 110 can be electrically connected to the corresponding data signal line or scan signal line.

[0038] For example, in some examples, the scan drive circuitry included in the gate driver 130 may be located on one side of the pixel array 110 (e.g., on one side of the pixel array in the first direction, such as...). Figure 1 (as shown on the left or right side), such as Figure 1 As shown, in the first direction, the scan driving circuit included in the gate driver 130 is located on the left side of the pixel array 110. However, this embodiment is not limited to this. For example, gate drivers 130 can be provided on both opposite sides of the pixel array 110 to achieve bilateral driving of the pixel array 110.

[0039] For example, in some examples, a pixel Pxij includes a pixel circuit and a light-emitting element. The pixel circuit can be a 3T1C (T represents a transistor, C represents a capacitor), 4T1C, 5T1C, 5T2C, 6T1C, or 7T1C structure, and this disclosure does not limit this. The light-emitting element can be, for example, an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED), and this disclosure does not limit this.

[0040] For example, in some examples, the gate driver 130 may be formed using an integrated circuit, or it may be formed directly on the substrate of the display panel during the process of fabricating the pixel circuit. However, this embodiment is not limited to this.

[0041] For example, timing controller 140 can provide control signals to data driver 120 with specifications suitable for data driver 120. Data driver 120 can use the control signals received from timing controller 140 to generate data signals to be provided to data signal lines DL1 to DLn, which further provide data signals to a plurality of pixels contained in the pixel array.

[0042] For example, timing controller 140 may also provide clock signals, scan start signals, etc., with specifications suitable for gate driver 130 to gate driver 130. Gate driver 130 may use the clock signals, scan start signals, etc., received from timing controller 140 to generate gate scan drive signals to be provided to scan signal lines GL1 to GLm. Further, scan signal lines GL1 to GLm provide the gate scan drive signals to a plurality of pixels included in the pixel array. For example, gate driver 130 may include a scan drive circuit that can sequentially provide gate scan drive signals with on-level pulses to scan signal lines GL1 to GLm. For example, the scan drive circuit may be configured as a shift register and may generate gate scan drive signals by sequentially transmitting scan start signals provided in the form of on-level pulses to the next stage circuit under the control of scan clock signals.

[0043] For example, the pixel circuit of each pixel operates under the control of the data signal transmitted through the data signal line and the gate scan drive signal transmitted through the scan signal line, so as to drive the light-emitting element of the pixel to emit light and thus realize operations such as display.

[0044] For example, the display panel can be: a 55-inch 4K OLED display panel, a 49-inch OLED display panel, a 55-inch 8K OLED display panel, etc.

[0045] Figure 2 A flowchart of a brightness determination method provided by at least one embodiment of the present disclosure is shown.

[0046] like Figure 2 As shown, this brightness determination method can be applied, for example, to... Figure 1 The brightness determination method for the display panel shown may include steps S210 to S230.

[0047] Step S210: Based on the image to be displayed, determine the first display brightness corresponding to each of the multiple pixels.

[0048] Step S220: Determine the reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to each of the multiple pixels.

[0049] Step S230: Based on the reference average image level and the relationship information between the average image level and the maximum display brightness, determine the target maximum display brightness of the display panel during the display of the image to be displayed.

[0050] For example, the range of values ​​corresponding to the average image level includes at least two segmented intervals, and the relationship information includes the information on how the maximum display brightness changes with the average image level in at least two segmented intervals; in different segmented intervals, the rate of change of the maximum display brightness with the average image level is different; in at least one segmented interval, the maximum display brightness decreases as the average image level increases, that is, the value of the maximum display brightness decreases as the value of the average image level increases.

[0051] For example, in step S210, the grayscale information of the image to be displayed can be obtained first, and the first display brightness of each pixel corresponding to the image to be displayed can be determined based on the grayscale information. For example, step S210 can be performed using the grayscale-based brightness determination method in related technologies, which will not be described in detail here.

[0052] For example, in step S220, the average picture level (APL) corresponding to the image to be displayed is determined based on the first display brightness of each pixel; that is, the aforementioned reference average picture level. The reference average picture level can reflect the overall brightness of the image to be displayed.

[0053] For example, in some examples, in step S220, a reference average image level corresponding to the image to be displayed can be determined based on the first display brightness of all pixels in the display panel used to display the image to be displayed. In the embodiments of this disclosure, determining the reference average image level based on the first display brightness of all pixels in the display panel used to display the image to be displayed allows the reference average image level to accurately reflect the brightness of the image to be displayed, thereby helping to improve the accuracy of the target maximum display brightness subsequently determined based on the reference average image level. It should be noted that all pixels in the display panel used to display the image to be displayed can be all pixels in the display panel or a portion of the pixels in the display panel, specifically determined according to the image to be displayed. In the embodiments of this disclosure, the example given is that all pixels in the display panel used to display the image to be displayed can be all pixels in the display panel.

[0054] For example, the formula for calculating the reference average image level is shown in equation (1) below.

[0055] APL = sum_all / k1 (1)

[0056] Where APL is the reference average image level, k1 is a constant (k1 makes the value of APL between 0 and 1), and sum_all is the sum of the first display brightness of all pixels in the display panel used to display the image to be displayed. For example, when the display panel includes three types of pixels: R (red), G (green), and B (blue), sum_all = sum_R + sum_G + sum_B, where sum_R is the sum of the first display brightness of all red pixels in the display panel used to display the image to be displayed, sum_G is the sum of the first display brightness of all green pixels in the display panel used to display the image to be displayed, and sum_B is the sum of the first display brightness of all blue pixels in the display panel used to display the image to be displayed. When the display panel includes four types of pixels: R (red), G (green), B (blue), and W (white), sum_all = sum_R + sum_G + sum_B + sum_W, where sum_W is the sum of the first display brightness of all white pixels in the display panel used to display the image to be displayed.

[0057] For example, APL can be normalized to a value between 0 and 1 using a constant. When there is no display on the display panel, the brightness of all pixels is 0, so APL can be defined as 0 (i.e., APL = 0).

[0058] For example, in a 100% full-screen display where two different colors of pixels are mixed at the highest grayscale (255 grayscale), APL is defined as 1 (i.e., APL = 1). In other words, APL = 1 corresponds to a mixed color (e.g., RG, GB, RB), the highest grayscale (255 grayscale), and a 100% full-screen display, where R represents red, G represents green, B represents blue, and W represents white. For example, when both red and green pixels are displayed at 255 grayscale, APL = 1.

[0059] For example, APL=0.5 corresponds to monochrome (R, G, B, or W), highest grayscale (255 grayscale), and 100% full-screen display. For instance, if all red pixels on the screen are displayed at 255 grayscale and no other colors besides red are displayed, APL=0.5.

[0060] For example, APL = 0.125 corresponds to a monochrome (R, G, B, or W), 255 grayscale, 25% window display. For instance, if red pixels in the 25% window are displayed at 255 grayscale and no other colors besides red are displayed, APL = 0.125. For example, in this embodiment, the x% window (x is a value between 0 and 100) can represent a display area occupying x% of the full-screen display area.

[0061] For example, APL = 0.05 corresponds to monochrome (R, G, B, or W), 255 gray levels, and a 10% window display. For instance, if the red pixels in the 10% window are displayed at 255 gray levels and no other colors besides red are displayed, then APL = 0.05.

[0062] For example, it is rare for two or more colors to be mixed and displayed at the highest grayscale. For instance, if three colors are mixed and displayed at the highest grayscale, the corresponding APL should be set to 1.

[0063] For example, in other examples, in step S220, the reference average image level may be determined by: determining at least one target pixel among a plurality of pixels; and determining the reference average image level corresponding to the image to be displayed based on a first display brightness corresponding to the at least one target pixel.

[0064] For example, a subset of pixels is selected from multiple pixels and designated as the target pixels. A reference average image level is then calculated based on the first display brightness of this subset of pixels. Alternatively, the reference average image level can be obtained by summing and normalizing the first display brightness of all target pixels. In embodiments of this disclosure, determining the average image level based on the first display brightness of a subset of pixels can improve calculation speed and processing efficiency. The target pixels can be selected from multiple pixels using one of the following two methods.

[0065] For example, in the first approach, pixels with a first display brightness greater than a brightness threshold can be selected from multiple pixels as the at least one target pixel. That is, the first display brightness corresponding to each target pixel is greater than the brightness threshold. For example, the brightness threshold could be the average of the first display brightness of all pixels in the display panel used to display the image to be displayed, or it could be the median of the first display brightness of all pixels in the display panel used to display the image to be displayed (i.e., the value in the middle of a data sequence formed by arranging the first display brightness of all pixels in the display panel in numerical order), or it could be other values ​​determined according to actual needs. In other words, pixels with higher brightness can be selected from multiple pixels as target pixels.

[0066] For example, in the second approach, the display colors corresponding to multiple pixels can be determined based on the image to be displayed; at least one target display color can be determined based on the display colors corresponding to the multiple pixels, wherein the ratio of the pixels displaying each target display color to the multiple pixels is greater than a ratio threshold; and pixels corresponding to the target display color can be selected from the multiple pixels as at least one target pixel.

[0067] For example, based on the image to be displayed, first determine the number of pixels corresponding to each color (e.g., R, G, and B or R, G, B, and W), and select the color with the largest proportion of pixels as the target display color. For example, if pixels displaying red account for 20% of all pixels on the display panel used to display the image to be displayed, pixels displaying blue account for 20% of all pixels on the display panel used to display the image to be displayed, and pixels displaying green account for 60% of all pixels on the display panel used to display the image to be displayed, with a proportion threshold of, for example, 30%, then green is the target display color, and all pixels displaying green are selected as the target pixels. The proportion threshold can be determined according to actual needs, and this disclosure does not limit the specific value of the proportion threshold.

[0068] For example, the reference average image level can also be determined in other ways, such as using the average of the first display brightness of all pixels displaying the image to be displayed as the reference average image level. In some of the following embodiments, the brightness determination method of the present disclosure will be explained and illustrated using the above formula (1) to determine the reference average image level.

[0069] For example, after obtaining the reference average image level, step S230 can be executed to determine the target maximum display brightness of the display panel during the display of the image to be displayed, based on the reference average image level and information regarding the relationship between the average image level and the maximum display brightness. For example, the average image level range (e.g., 0 to 1) may include four consecutive segmented intervals: a first segmented interval, a second segmented interval, a third segmented interval, and a fourth segmented interval. In the first segmented interval, the second segmented interval, the third segmented interval, and the fourth segmented interval, the average image level and the maximum display brightness have different relationships.

[0070] For example, in at least one segmented interval, the maximum display brightness decreases as the average image level increases. In some examples, the maximum display brightness decreases as the average image level increases across all segmented intervals (e.g., the first to the fourth segmented intervals), but the rate of decrease differs across the different segmented intervals. In other examples, the maximum display brightness decreases as the average image level increases in some segmented intervals (e.g., the second to the fourth segmented intervals), but the rate of decrease differs across the different segmented intervals. For example, a subset of segmented intervals with an average image level higher than a certain threshold can be defined as such a subset of segmented intervals. That is, if the minimum average image level value contained in one or more segmented intervals is higher than or equal to a certain threshold, then in those one or more segmented intervals, the maximum display brightness decreases as the average image level increases.

[0071] For example, in step S230, the segment interval where the reference average image level is located can be determined first, and then the reference average image level can be substituted into the relationship of the corresponding segment interval to calculate the corresponding maximum display brightness. The calculated maximum display brightness is then used as the target maximum display brightness corresponding to the image to be displayed.

[0072] For example, after obtaining the target maximum display brightness, multiple second display brightnesses corresponding to multiple pixels are determined based on the target maximum display brightness during the display of the image to be displayed.

[0073] For example, the target maximum display brightness is the brightness corresponding to the pixel with the highest brightness in the image to be displayed, and the brightness of the remaining pixels can be adjusted accordingly based on this maximum display brightness. For example, for the image to be displayed, the pixel with the highest display brightness is pixel PxA, and according to step S210, the first display brightness of pixel PxA is determined to be L. A According to step S230, the maximum display brightness corresponding to the image to be displayed is determined to be L. A That is, the first display brightness corresponding to pixel PxA is adjusted so that the adjusted brightness of pixel PxA (i.e., the second display brightness corresponding to pixel PxA) is L. A Then, the second display brightness of any other pixel Pxij can be determined according to the following formula (2):

[0074] L ij '=(L A ' / L A )*L ij (2)

[0075] Among them, L ij L is the first display brightness of the pixel Pxij. ij ' is the second display brightness of the pixel Pxij.

[0076] For example, after obtaining the second display brightness of each pixel corresponding to the image to be displayed, the image to be displayed is presented based on the second display brightness of each pixel.

[0077] For example, timing controller 140 can generate control signals based on the second display brightness of each pixel and provide the control signals to data driver 120. Data driver 120 can use the control signals received from timing controller 140 to generate data signals and further provide the data signals to each pixel via data signal lines DL1 to DLn.

[0078] For example, in some embodiments, the timing controller 140 may also provide clock signals, scan start signals, etc., with specifications suitable for the gate driver 130 to the gate driver 130. The gate driver 130 may use the clock signals, scan start signals, etc., received from the timing controller 140 to generate scan signals to be provided to the scan signal lines GL1 to GLm. For example, during the presentation of an image to be displayed, the gate driver 130 may turn on one row of pixels in the pixel array at a time, and the data driver 120 writes the corresponding data signal into the turned-on row of pixels, causing that row of pixels to present the corresponding brightness. By performing row-by-row turning on and writing in this manner, the display panel can present the image to be displayed according to the second display brightness corresponding to each pixel.

[0079] According to the brightness determination method of this disclosure, by decreasing the maximum display brightness as the average image level increases in at least some segmented intervals, the overall display brightness of the image to be displayed can be appropriately reduced when the overall grayscale of the image to be displayed is high, thereby reducing power consumption and avoiding excessive power consumption due to excessive brightness. When the overall grayscale of the image to be displayed is low, the overall display brightness can be increased, thereby enhancing detail, improving contrast, and improving display effect. Furthermore, by setting different rates of change for the maximum display brightness in different segmented intervals, segmented brightness adjustment can be achieved, making brightness adjustment more flexible. For example, the brightness can be divided into several segments based on the sensitivity of the human eye to brightness changes, and a brightness change rate that conforms to the viewing comfort of the human eye can be set in different segments, which helps to improve the viewing comfort of the human eye and achieve a better viewing effect.

[0080] For example, for any two contrasting segmented intervals (two contrasting segmented intervals refer to two segmented intervals that can be compared among at least two segmented intervals), where any two contrasting segmented intervals include the first contrasting segmented interval and the second contrasting segmented interval, the maximum value of the average image level in the first contrasting segmented interval is less than or equal to the minimum value of the average image level in the second contrasting segmented interval. The rate of change of the highest display brightness in the first contrasting segmented interval is less than or equal to the rate of change of the highest display brightness in the second contrasting segmented interval.

[0081] For example, the first and second paired segmented intervals can be any two segmented intervals from the at least two segmented intervals, either adjacent or spaced apart. For ease of description, these two segmented intervals are named the first and second paired segmented intervals, respectively. The segment with the smaller APL value is called the first paired segmented interval, and the segment with the larger APL value is called the second paired segmented interval. The rate of change of the maximum display brightness in the first paired segmented interval is less than that in the second paired segmented interval. This means that for any two segmented intervals, the rate of change of the maximum display brightness is slower in the segmented interval with a relatively smaller APL value, and faster in the segmented interval with a relatively larger APL value. In other words, as the APL value increases, the rate of change of the maximum display brightness also increases accordingly. Since the human eye is more sensitive to brightness changes at low grayscale levels, this scheme allows for less noticeable brightness changes when the overall grayscale of the displayed image is low, thus better adapting to the human eye and improving the viewing experience.

[0082] For example, the average image level corresponds to a range including a minimum, median, and maximum value, with the median being the average of the maximum and minimum values. The number of segments within the range from the minimum to the median is greater than the number of segments within the range from the median to the maximum.

[0083] For example, with a minimum value of 0, a maximum value of 1, and a median value of 0.5, the number of segments within the range of 0 to 0.5 is greater than the number of segments within the range of 0.5 to 1. For instance, there are three segments within the range of 0 to 0.5, while there is only one segment within the range of 0.5 to 1. More segments result in smoother brightness transitions. Therefore, based on this scheme, a smoother brightness transition can be achieved within the low grayscale range where the human eye is most sensitive.

[0084] For example, at least two segmented intervals include a first segmented interval, in which the maximum display brightness remains constant as the average image level changes, and the maximum display brightness is a predetermined brightness value. That is, as long as the value of the reference average image level is within the first segmented interval, the corresponding target maximum display brightness value remains at the predetermined brightness value.

[0085] For example, the maximum display brightness remains constant within at least one segment of the average image level. Based on this method, the display brightness of images at a certain grayscale level can be made essentially consistent, resulting in more natural image transitions.

[0086] For example, the maximum average image level in the first segment interval is less than or equal to the minimum average image level in at least two other segment intervals. In other words, the first segment interval can be the segment interval with the minimum average image level among all segment intervals. Based on this method, the maximum display brightness can be kept constant within the low grayscale range where the human eye is more sensitive to brightness changes, thus improving viewing comfort.

[0087] For example, at least two segmented intervals also include a second segmented interval, a third segmented interval, and a fourth segmented interval, with the average image level value continuously increasing from the first segmented interval to the fourth segmented interval. Within the second segmented interval to the fourth segmented interval, the maximum display brightness decreases as the average image level increases.

[0088] Figure 3 A schematic diagram showing the relationship between the highest display brightness and the average image level provided in at least one embodiment of this disclosure is illustrated. Figure 3 In the graph shown, the horizontal axis represents the normalized average image level, and the vertical axis represents the maximum display brightness.

[0089] like Figure 3As shown, for example, the range of values ​​corresponding to the average image level includes a minimum value of 0, a first value P1, a second value P2, a third value P3, and a maximum value of 1. Among them, the first value P1, the second value P2, and the third value P3 are located between the minimum value of 0 and the maximum value of 1 and increase sequentially. The two endpoints of the first segment interval are the minimum value of 0 and the first value P1, the two endpoints of the second segment interval are the first value P1 and the second value P2, the two endpoints of the third segment interval are the second value P2 and the third value P3, and the two endpoints of the fourth segment interval are the third value P3 and the maximum value 1.

[0090] For example, based on the sensitivity of the human eye to changes in brightness, the first value P1 can be less than or equal to 0.1, the second value P2 can be greater than or equal to 0.1 and less than or equal to 0.2, and the third value P3 can be greater than or equal to 0.3 and less than or equal to 0.7.

[0091] For example, based on the sensitivity of the human eye to changes in brightness, the first value P1 can be set to 0.05, the second value P2 to 0.125, and the third value P3 to 0.5. Then, the first segment interval is 0 < APL ≤ 0.05, the second segment interval is 0.05 ≤ APL ≤ 0.125, the third segment interval is 0.125 ≤ APL ≤ 0.5, and the fourth segment interval is 0.5 ≤ APL ≤ 1.

[0092] For example, power consumption can be considered to determine the maximum display brightness corresponding to the minimum, first, second, third, and maximum average image levels, ensuring that the power consumption corresponding to the maximum display brightness in any segment does not exceed a predetermined power consumption range. In the embodiments of this disclosure, the maximum display brightness of the screen is adjusted according to different APL values ​​under different display images, ensuring that the display brightness is high while keeping power consumption within limits. For example, when the average image level is 0.05, the maximum display brightness value L (e.g., 600 nits) corresponding to the highest power consumption within the predetermined power consumption range is calculated, and this maximum display brightness L is used as the predetermined brightness value corresponding to the first segment. For example, when the display panel displays a monochrome, 255 grayscale, 10% window image, the maximum display brightness of the display panel is the aforementioned predetermined brightness value, which can be 600 nits. When the average image level is 0.125, the maximum display brightness value (e.g., 400 nits) corresponding to the highest power consumption within the predetermined power consumption range is calculated. With an average image level value of 0.5, calculate the maximum display brightness value corresponding to the highest power consumption within a predetermined power consumption range (e.g., 150 nits). With an average image level value of 0.125, calculate the maximum display brightness value corresponding to the highest power consumption within a predetermined power consumption range (e.g., 75 nits).

[0093] For example, in the first segmented interval APL∈(0~0.05], the maximum display brightness is maintained at a predetermined brightness value, such as 600 nits. The relationship between the maximum display brightness and the average image level is expressed as: Lmax=L. For example, if the average image level corresponding to the image to be displayed is less than or equal to the average image level corresponding to a monochrome, 255 grayscale, 10% window image, the maximum display brightness of the display panel is 600 nits during the display of the image to be displayed.

[0094] For example, in the second segment interval APL∈[0.05~0.125], the relationship between the highest display brightness and the average image level is expressed as equation (3):

[0095] Lmax=L*(a1-b1*APL) (3)

[0096] Where Lmax is the maximum display brightness, L is the predetermined brightness value, APL is the average image level, and a1 and b1 are constants that can be set according to actual conditions. For example, in this second segment interval, the maximum display brightness of the full screen is between 400 and 600 nits. For example, when the average image level corresponding to the image to be displayed is greater than or equal to the average image level corresponding to the monochrome, 255 grayscale, 10% window screen and less than or equal to the average image level corresponding to the monochrome, 255 grayscale, 25% window screen, the maximum display brightness of the display panel is between 400 and 600 nits during the display of the image to be displayed on the display panel. The specific value of the maximum display brightness can be calculated according to the relationship (3).

[0097] For example, in the third segment interval APL∈[0.125~0.5], the relationship between the highest display brightness and the average image level is expressed as equation (4):

[0098] Lmax=L*(a2*APL 2 -b2*APL+c2) (4)

[0099] Where a2, b2, and c2 are constants and can be set according to actual conditions. For example, in this third segment interval, the maximum display brightness of the full screen is between 150 and 400 nits. For example, when the average image level corresponding to the image to be displayed is greater than or equal to the average image level corresponding to the monochrome, 255 grayscale, 25% window screen and less than or equal to the average image level corresponding to the monochrome, 255 grayscale, 100% window screen, the maximum display brightness of the display panel is between 150 and 400 nits during the display of the image to be displayed on the display panel. The specific value of the maximum display brightness can be calculated according to the relationship (4).

[0100] For example, in the fourth segment interval APL∈[0.5~1], the relationship between the highest display brightness and the average image level is expressed as equation (5):

[0101] Lmax=L*(a3-b3*APL) (5)

[0102] Where a3 and b3 are constants and can be set according to the actual situation. For example, b3 is greater than b1, which means that the slope of the line that changes the highest display brightness in the fourth segment interval is greater than the slope of the line that changes the highest display brightness in the second segment interval, and the rate of change of the highest display brightness in the fourth segment interval is greater.

[0103] For example, in this fourth segment interval, the maximum display brightness of the full screen is between 75 and 150 nits. For example, when the average image level corresponding to the image to be displayed is greater than or equal to the average image level corresponding to the monochrome, 255 grayscale, 100% window screen and less than or equal to the average image level corresponding to the mixed color, 255 grayscale, 100% window screen, the maximum display brightness of the display panel is between 75 and 150 nits during the display of the image to be displayed on the display panel. The specific value of the maximum display brightness can be calculated according to the relationship (5).

[0104] For example, the curve showing the change in maximum display brightness with average image level is continuous across the four segmented intervals and transitions smoothly at the boundary points.

[0105] For example, besides the segmentation method in the above embodiments, other segmentation methods can be used. For instance, the value range of the average image unit can be divided into two, three, or more than four segment intervals. Similarly, besides the boundary point values ​​in the above embodiments, other boundary point values ​​can be used. In practical applications, the number of segment intervals and the boundary point values ​​of the segment intervals can be set according to requirements.

[0106] For example, Table 1 below shows the actual brightness data obtained after adjusting the brightness according to the brightness determination method of this disclosure.

[0107] Table 1

[0108]

[0109]

[0110] For example, in Table 1, 1.1% W255 represents white, 255 gray levels, and 1.1% window display; 4.3% W255 represents white, 255 gray levels, and 4.3% window display; 100.0% W255 represents white, 255 gray levels, and 100% window display, and so on. RB mixing represents a mixture of red and blue, the highest gray level (255 gray levels), and 100% full-screen display.

[0111] Figure 4 A schematic diagram showing the relationship between the highest display brightness and the average image level, plotted based on the data in Table 1, is provided in at least one embodiment of this disclosure. Figure 4 In the graph shown, the horizontal axis represents the normalized average image level, and the vertical axis represents the maximum display brightness.

[0112] like Figure 4As shown, when APL ≤ 0.125, the maximum display brightness Lmax ranges from 515.8 to 527.1 nits, with the maximum display brightness in the first segment remaining approximately 527 nits. When 0.125 ≤ APL ≤ 0.5, the maximum display brightness decreases with increasing APL, ranging from 200 to 527 nits. When 0.5 ≤ APL ≤ 1, the maximum display brightness ranges from 100 to 200 nits, and the rate of decrease with increasing APL increases. Therefore, the trend and value of the maximum display brightness changing with APL obtained from actual testing are basically consistent with the relationship between the maximum display brightness and the average image level mentioned above.

[0113] Figure 5 A schematic block diagram of a brightness determination device 500 provided in at least one embodiment of the present disclosure is shown.

[0114] For example, such as Figure 5 As shown, the brightness determination device 500 includes a first determination module 510, a second determination module 520, and a third determination module 530.

[0115] The first determining module 510 is configured to determine the first display brightness corresponding to multiple pixels based on the image to be displayed. For example, the first determining module 510 can perform... Figure 2 Step S210 is described.

[0116] The second determining module 520 is configured to determine a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to multiple pixels. For example, the second determining module 520 can perform... Figure 2 Step S220 is described.

[0117] The third determining module 530 is configured to determine the target maximum display brightness of the display panel during the display of the image to be displayed, based on a reference average image level and information regarding the relationship between the average image level and the maximum display brightness. For example, the range of values ​​corresponding to the average image level includes at least two segmented intervals, and the relationship information includes information on how the maximum display brightness changes with the average image level within these at least two segmented intervals; the rate of change of the maximum display brightness with respect to the average image level differs in different segmented intervals; and in at least one segmented interval, the maximum display brightness decreases as the average image level increases. The third determining module 530 may, for example, perform... Figure 2 Step S230 is described.

[0118] For example, the first determining module 510, the second determining module 520, and the third determining module 530 can be implemented as hardware, software, firmware, or any feasible combination thereof. For example, the first determining module 510, the second determining module 520, and the third determining module 530 can be dedicated or general-purpose circuits, chips, or devices, or they can be a combination of a processor and a memory. The embodiments of this disclosure do not limit the specific implementation of the above-mentioned units.

[0119] It should be noted that in the embodiments of this disclosure, each module of the brightness determination device 500 corresponds to each step of the aforementioned brightness determination method. For the specific functions and technical effects of the brightness determination device 500, please refer to the relevant description of the brightness determination method, which will not be repeated here. Figure 5 The components and structure of the brightness determination device 500 shown are merely exemplary and not limiting. The brightness determination device 500 may also include other components and structures as needed.

[0120] For example, the brightness determination device 500 may further include a fourth determination module and a presentation module. The fourth determination module is configured to determine, based on the target maximum display brightness, a plurality of second display brightnesses corresponding to multiple pixels during the display of the image to be displayed. The presentation module is configured to present the image to be displayed based on the plurality of second display brightnesses. The presentation module may include a display screen.

[0121] For example, the second determining module 520 is further configured to: determine the reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to all the multiple pixels respectively.

[0122] For example, the second determining module 520 is further configured to: determine at least one target pixel among a plurality of pixels; and determine a reference average image level corresponding to the image to be displayed based on a first display brightness corresponding to the at least one target pixel.

[0123] For example, the second determining module 520 is further configured to: select from a plurality of pixels a first display brightness greater than a brightness threshold as at least one target pixel.

[0124] For example, the second determining module 520 is further configured to: determine the display colors corresponding to multiple pixels based on the image to be displayed; determine at least one target display color based on the display colors corresponding to multiple pixels, wherein the ratio between the pixels displaying each target display color and the multiple pixels is greater than a ratio threshold; and select the pixels corresponding to the target display color from the multiple pixels as at least one target pixel.

[0125] For example, for any two contrasting segmented intervals in at least two segmented intervals, where each contrasting segmented interval includes a first contrasting segmented interval and a second contrasting segmented interval, the maximum average image level in the first contrasting segmented interval is less than or equal to the minimum average image level in the second contrasting segmented interval. The rate of change of the highest display brightness in the first contrasting segmented interval is less than or equal to the rate of change of the highest display brightness in the second contrasting segmented interval.

[0126] For example, the average image level corresponds to a range including a minimum, median, and maximum value, with the median being the average of the maximum and minimum values. The number of segments within the range from the minimum to the median is greater than the number of segments within the range from the median to the maximum.

[0127] For example, at least two segmented intervals include a first segmented interval in which the maximum display brightness remains constant as the average image level changes, and the maximum display brightness is a predetermined brightness value.

[0128] For example, the average image level in the first segment interval is less than the average image level in at least two other segment intervals besides the first segment interval.

[0129] For example, at least two segmented intervals also include a second segmented interval, a third segmented interval, and a fourth segmented interval, with the average image level value continuously increasing from the first segmented interval to the fourth segmented interval. In the second segmented interval, the relationship between the maximum display brightness and the average image level is expressed as: Lmax = L*(a1 - b1*APL), where Lmax is the maximum display brightness, L is a predetermined brightness value, APL is the average image level, and a1 and b1 are constants; in the third segmented interval, the relationship between the maximum display brightness and the average image level is expressed as: Lmax = L*(a2*APL) 2 -b2*APL+c2), where a2, b2 and c2 are constants; in the fourth segment interval, the relationship between the highest display brightness and the average image level is expressed as the formula: Lmax=L*(a3-b3*APL), where a3 and b3 are constants.

[0130] For example, the range of values ​​corresponding to the average image level includes the minimum value, the first value, the second value, the third value, and the maximum value. The first value, the second value, and the third value are located between the minimum value and the maximum value and increase sequentially. The two endpoints of the first segment interval are the minimum value and the first value, the two endpoints of the second segment interval are the first value and the second value, the two endpoints of the third segment interval are the second value and the third value, and the two endpoints of the fourth segment interval are the third value and the maximum value.

[0131] At least one embodiment of this disclosure also provides an electronic device including a processor and a memory, the memory being configured to store one or more computer program modules. The one or more computer program modules are configured to be executed by the processor, and include instructions for implementing the brightness determination method described above. This electronic device, by reducing the maximum display brightness as the average image level increases in at least some segmented intervals, can appropriately reduce the overall display brightness of the image to be displayed when the overall grayscale of the image is high, thereby reducing power consumption and avoiding excessive power consumption due to excessively high display brightness; conversely, it can increase the overall display brightness of the image to be displayed when the overall grayscale of the image is low, thereby enhancing detail, improving contrast, and improving display effects. Furthermore, by setting different rates of change for the maximum display brightness in different segmented intervals, segmented brightness adjustment can be achieved, making brightness adjustment more flexible. For example, the brightness can be divided into several segments based on the sensitivity of the human eye to brightness changes, and a brightness change rate that conforms to the viewing comfort of the human eye can be set in different segments, which helps to improve the viewing comfort of the human eye and achieve a better viewing effect.

[0132] Figure 6 This is a schematic block diagram of an electronic device provided for some embodiments of this disclosure. For example... Figure 6 As shown, the electronic device 600 includes a processor 610 and a memory 620. The memory 620 stores non-transitory computer-readable instructions (e.g., one or more computer program modules). The processor 610 executes the non-transitory computer-readable instructions, which, when executed by the processor 610, can perform one or more steps in the brightness determination method described above. The memory 620 and the processor 610 can be interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0133] For example, processor 610 may be a central processing unit (CPU), a graphics processing unit (GPU), or other form of processing unit with data processing and / or program execution capabilities. For example, the central processing unit (CPU) may be an x86 or ARM architecture. Processor 610 may be a general-purpose processor or a special-purpose processor, capable of controlling other components in electronic device 600 to perform desired functions.

[0134] For example, memory 620 may include any combination of one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, erasable programmable read-only memory (EPROM), portable compact disc read-only memory (CD-ROM), USB memory, flash memory, etc. One or more computer program modules may be stored on the computer-readable storage medium, and processor 610 may run one or more computer program modules to implement various functions of electronic device 600. Various application programs and various data, as well as various data used and / or generated by the application programs, may also be stored in the computer-readable storage medium.

[0135] It should be noted that, in the embodiments of this disclosure, the specific functions and technical effects of the electronic device 600 can be referred to the description of the brightness determination method above, and will not be repeated here.

[0136] Figure 7 This is a schematic block diagram of another electronic device provided in some embodiments of the present disclosure. The electronic device 700 is, for example, suitable for implementing the brightness determination method provided in the embodiments of the present disclosure. The electronic device 700 may be a terminal device, etc. It should be noted that... Figure 7 The illustrated electronic device 700 is merely an example and does not impose any limitation on the functionality and scope of use of the embodiments of this disclosure.

[0137] like Figure 7 As shown, the electronic device 700 may include a processing unit (e.g., a central processing unit, a graphics processor, etc.) 710, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 720 or a program loaded from a storage device 780 into a random access memory (RAM) 730. The RAM 730 also stores various programs and data required for the operation of the electronic device 700. The processing unit 710, the ROM 720, and the RAM 730 are interconnected via a bus 740. An input / output (I / O) interface 750 is also connected to the bus 740.

[0138] Typically, the following devices can be connected to the I / O interface 750: input devices 760 including, for example, a touchscreen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 770 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 780 including, for example, magnetic tape, hard disk, etc.; and communication devices 790. The communication device 790 allows the electronic device 700 to communicate wirelessly or wiredly with other electronic devices to exchange data. Although Figure 7 An electronic device 700 with various devices is shown, but it should be understood that it is not required to implement or have all of the devices shown, and the electronic device 700 may alternatively implement or have more or fewer devices.

[0139] For example, according to embodiments of this disclosure, the brightness determination method described above can be implemented as a computer software program. For instance, embodiments of this disclosure include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program including program code for performing the brightness determination method described above. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 790, or installed from a storage device 780, or installed from a ROM 720. When the computer program is executed by the processing device 710, the functions defined in the brightness determination method provided by embodiments of this disclosure can be implemented.

[0140] At least one embodiment of this disclosure also provides a computer-readable storage medium for storing non-transitory computer-readable instructions that, when executed by a computer, can implement the aforementioned brightness determination method. In the brightness determination method that can be implemented when the non-transitory computer-readable instructions stored in this computer-readable storage medium are executed by a computer, the maximum display brightness can be reduced as the average image level increases in at least some segmented intervals. This allows for a reduction in overall display brightness when the overall grayscale of the image to be displayed is high, thereby reducing power consumption and avoiding excessive power consumption due to excessive display brightness. Conversely, when the overall grayscale of the image to be displayed is low, the overall display brightness can be increased, thereby enhancing detail, improving contrast, and improving display effects. Furthermore, by setting different rates of change for the maximum display brightness in different segmented intervals, segmented brightness adjustment can be achieved, making brightness adjustment more flexible. For example, the brightness can be divided into several segments based on the sensitivity of the human eye to brightness changes, and a brightness change rate that conforms to human eye viewing comfort can be set in different segments. This helps improve viewing comfort and achieve a better viewing effect.

[0141] Figure 8This is a schematic diagram of a computer-readable storage medium provided for some embodiments of this disclosure. For example... Figure 8 As shown, the computer-readable storage medium 800 is used to store non-transitory computer-readable instructions 810. For example, when the non-transitory computer-readable instructions 810 are executed by a computer, one or more steps in the brightness determination method described above can be performed.

[0142] For example, computer-readable storage medium 800 may be a non-transitory computer-readable storage medium.

[0143] For example, the computer-readable storage medium 800 can be used in the aforementioned electronic device 600. For example, the computer-readable storage medium 800 can be... Figure 6 The memory 620 in the illustrated electronic device 600. For example, a description of the computer-readable storage medium 800 can be found here. Figure 6 The corresponding description of the memory 620 in the illustrated electronic device 600 will not be repeated here.

[0144] The following points need to be explained:

[0145] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0146] (2) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0147] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure should be determined by the scope of protection of the claims.

Claims

1. A brightness determination method for a display panel, wherein, The display panel includes multiple pixels, and the method includes: Based on the image to be displayed, determine the first display brightness corresponding to each of the plurality of pixels; Based on the first display brightness corresponding to each of the plurality of pixels, a reference average image level corresponding to the image to be displayed is determined; and Based on the reference average image level and the relationship information between the average image level and the maximum display brightness, the target maximum display brightness of the display panel during the display of the image to be displayed is determined. The average image level range includes at least two segmented intervals, and the relationship information includes the change information of the maximum display brightness with the average image level in the at least two segmented intervals; the rate of change of the maximum display brightness with the average image level is different in different segmented intervals; and the maximum display brightness decreases as the average image level increases in at least one segmented interval. Specifically, for any two of the at least two segmented intervals, the rate of change of the highest display brightness with the average image level in the segmented interval with the smaller value is less than the rate of change of the highest display brightness with the average image level in the segmented interval with the larger value.

2. The method according to claim 1, wherein, The range of values ​​corresponding to the average image level includes a minimum value, a median value, and a maximum value, where the median value is the average of the maximum value and the minimum value. The number of segment intervals located between the minimum value and the intermediate value is greater than the number of segment intervals located between the intermediate value and the maximum value.

3. The method according to claim 1, wherein, The at least two segmented intervals include the first segmented interval. Within the first segmented interval, the maximum display brightness remains constant as the average image level changes, and the maximum display brightness is a predetermined brightness value.

4. The method according to claim 3, wherein, The average image level in the first segment interval is less than the average image level in the other segment intervals of the at least two segment intervals excluding the first segment interval.

5. The method according to claim 4, wherein, The at least two segmented intervals further include a second segmented interval, a third segmented interval, and a fourth segmented interval, wherein the average image level value is continuous from the first segmented interval to the fourth segmented interval and increases sequentially. In the second segmented interval, the relationship between the maximum display brightness and the average image level is expressed as the following formula: Lmax=L*(a1-b1*APL), where Lmax is the maximum display brightness, L is the predetermined brightness value, APL is the average image level, and a1 and b1 are constants. In the third segment interval, the relationship between the highest display brightness and the average image level is expressed as: Lmax = L * (a2 * APL) 2 - b2*APL+c2), where a2, b2, and c2 are constants; In the fourth segment interval, the relationship between the highest display brightness and the average image level is expressed as the formula: Lmax=L*(a3- b3*APL), where a3 and b3 are constants.

6. The method according to claim 5, wherein, The range of values ​​corresponding to the average image level includes a minimum value, a first value, a second value, a third value, and a maximum value, wherein the first value, the second value, and the third value are located between the minimum value and the maximum value and increase sequentially. The two endpoints of the first segmented interval are the minimum value and the first value, the two endpoints of the second segmented interval are the first value and the second value, the two endpoints of the third segmented interval are the second value and the third value, and the two endpoints of the fourth segmented interval are the third value and the maximum value.

7. The method according to claim 1, wherein, Based on the first display brightness of the plurality of pixels, a reference average image level corresponding to the image to be displayed is determined, including: Based on the first display brightness corresponding to each of the plurality of pixels, a reference average image level corresponding to the image to be displayed is determined.

8. The method according to claim 1, wherein, Based on the first display brightness of the plurality of pixels, a reference average image level corresponding to the image to be displayed is determined, including: Determine at least one target pixel among the plurality of pixels; A reference average image level corresponding to the image to be displayed is determined based on the first display brightness corresponding to the at least one target pixel.

9. The method according to claim 8, wherein, Determining at least one target pixel among the plurality of pixels includes: Pixels with a first display brightness greater than a brightness threshold are selected from the plurality of pixels and used as at least one target pixel.

10. The method according to claim 8, wherein, Determining at least one target pixel among the plurality of pixels includes: Based on the image to be displayed, determine the display colors corresponding to the plurality of pixels respectively; Based on the display colors corresponding to the plurality of pixels, at least one target display color is determined, wherein the ratio between the pixel displaying each target display color and the plurality of pixels is greater than a ratio threshold. Pixels corresponding to the target display color are selected from the plurality of pixels and used as at least one target pixel.

11. The method according to claim 1, further comprising: Based on the target maximum display brightness, determine a plurality of second display brightness corresponding to the plurality of pixels respectively during the display of the image to be displayed; The image to be displayed is presented based on the plurality of second display brightness levels.

12. A brightness determining device for a display panel, wherein, The display panel includes multiple pixels, and the brightness determination device includes: The first determining module is configured to determine the first display brightness corresponding to each of the plurality of pixels based on the image to be displayed; The second determining module is configured to determine a reference average image level corresponding to the image to be displayed based on the first display brightness corresponding to the plurality of pixels; and The third determining module is configured to determine the target maximum display brightness of the display panel during the display of the image to be displayed, based on the reference average image level and information regarding the relationship between the average image level and the maximum display brightness. The average image level range includes at least two segmented intervals, and the relationship information includes the change information of the maximum display brightness with the average image level in the at least two segmented intervals; the rate of change of the maximum display brightness with the average image level is different in different segmented intervals; and the maximum display brightness decreases as the average image level increases in at least one segmented interval. Specifically, for any two of the at least two segmented intervals, the rate of change of the highest display brightness with the average image level in the segmented interval with the smaller value is less than the rate of change of the highest display brightness with the average image level in the segmented interval with the larger value.

13. A display panel, comprising: Multiple pixels; as well as A timing controller configured to perform the brightness determination method according to any one of claims 1-11.

14. An electronic device comprising: processor; Memory, configured to store one or more computer program modules; The one or more computer program modules are configured to be executed by the processor, and the one or more computer program modules include instructions for implementing the brightness determination method according to any one of claims 1-11.

15. A computer-readable storage medium for storing non-transitory computer-readable instructions that, when executed by a computer, can implement the brightness determination method according to any one of claims 1-11.

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