Method, System, Device, and Equipment for Adjusting Peak Brightness of Display Panel

Abstract

The present application relates to a method, system, device, and equipment for adjusting the peak brightness of a display panel. The method includes: obtaining the actual peak brightness of the display panel; determining the peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel; determining a compensation voltage according to the peak brightness difference and a first gamma curve preset in the display panel; and adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel. Thereby, the peak brightness of the display panel can be improved to meet the user's requirements.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a method, a system, a device, an equipment, a computer-readable storage medium, and a computer program product for adjusting the peak brightness of a display panel. Background Art

[0002] With the development of display technologies, people's requirements for the image quality of display panels are getting higher and higher. The image quality of a display panel is usually determined by brightness and contrast. In a display panel, a zoned backlight method is usually adopted to display images. By adjusting the brightness of the highlighted part of the image to the peak brightness and reducing the brightness of the dark part, the best contrast effect can be achieved. Therefore, in order to meet the requirements of image presentation effects, people's requirements for the peak brightness of display panels are also getting higher and higher. Therefore, how to improve the peak brightness of a display panel is a problem that needs to be solved currently. Summary of the Invention

[0003] Based on this, in view of the above technical problems, it is necessary to provide a method, a system, a device, an equipment, a computer-readable storage medium, and a computer program product for adjusting the peak brightness of a display panel, which can make the peak brightness of the display panel meet the user's requirements.

[0004] A method for adjusting the peak brightness of a display panel, the adjustment method comprising: obtaining the actual peak brightness of the display panel; determining a peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel; determining a compensation voltage according to the peak brightness difference and a first gamma curve preset in the display panel; and adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel.

[0005] In one embodiment, the step of determining a compensation voltage according to the peak brightness difference and the first gamma curve preset in the display panel comprises: converting the first gamma curve into a second gamma curve according to the peak brightness difference, wherein the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve; and determining the compensation voltage according to the actual peak brightness and the second gamma curve.

[0006] In one embodiment, the maximum brightness value corresponding to the maximum gray level of the second gamma curve is greater than or equal to the target peak brightness. Wherein, the step of converting the first gamma curve into the second gamma curve according to the peak brightness difference includes: determining the maximum brightness value corresponding to the maximum gray level of the second gamma curve according to the peak brightness difference and the maximum brightness value corresponding to the maximum gray level of the first gamma curve; and determining the second gamma curve according to the gamma value of the first gamma curve and the maximum brightness value corresponding to the maximum gray level of the second gamma curve.

[0007] In one embodiment, the step of determining the compensation voltage according to the actual peak brightness and the second gamma curve includes: determining a first gray level of the second gamma curve corresponding to the actual peak brightness according to the actual peak brightness and the second gamma curve; and determining the compensation voltage according to the first gray level and the maximum gray level of the second gamma curve.

[0008] In one embodiment, the step of obtaining the actual peak brightness of the display panel includes: providing a plurality of the display panels and respectively obtaining the actual peak brightness of each display panel; the step of determining the peak brightness difference according to the actual peak brightness and the target peak brightness of each display panel includes: determining a first peak brightness difference of each display panel for the actual peak brightness and the target peak brightness of each display panel; and determining the peak brightness difference according to the first peak brightness difference of each display panel.

[0009] In one embodiment, the step of obtaining the actual peak brightness of the display panel includes: respectively obtaining the peak brightness of different display regions of each display panel; and obtaining the actual peak brightness of the corresponding display panel according to the peak brightness of each display region.

[0010] In one embodiment, the adjustment method further includes: obtaining a peak brightness adjustment instruction for adjusting the actual peak brightness; and adjusting a first preset power supply voltage of the display panel with the compensation voltage according to the peak brightness adjustment instruction, so that the peak brightness of the display panel is the target peak brightness.

[0011] A peak brightness adjustment system for a display panel, the adjustment system comprising: a driving circuit connected to the display panel to be adjusted for providing a power supply voltage to the display panel to be adjusted; and a processor connected to the driving circuit, the processor being configured to: determine a peak brightness difference based on the actual peak brightness and the target peak brightness of the display panel, determine a compensation voltage based on the peak brightness difference and a first gamma curve preset for the display panel, and further adjust the power supply voltage of the display panel according to the compensation voltage; wherein the actual peak brightness is directly preset in the processor or obtained by the processor.

[0012] A peak brightness adjustment device for a display panel, the device comprising:

[0013] A brightness acquisition module for directly presetting or acquiring the actual peak brightness of the display panel;

[0014] A brightness difference determination module connected to the brightness acquisition module for determining a peak brightness difference based on the actual peak brightness and the target peak brightness of the display panel;

[0015] A compensation determination module connected to the brightness difference determination module for determining a compensation voltage based on the peak brightness difference and a first gamma curve preset for the display panel; and

[0016] An adjustment module connected to the compensation determination module for adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel.

[0017] A computer device comprising a memory and a processor, the memory storing a computer program, and when the processor executes the computer program, the following steps are implemented: acquiring the actual peak brightness of the display panel; determining a peak brightness difference based on the actual peak brightness and the target peak brightness of the display panel; determining a compensation voltage based on the peak brightness difference and a first gamma curve preset for the display panel; and adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel.

[0018] A computer-readable storage medium having stored thereon a computer program, and when the computer program is executed by a processor, the following steps are implemented: acquiring the actual peak brightness of the display panel; determining a peak brightness difference based on the actual peak brightness and the target peak brightness of the display panel; determining a compensation voltage based on the peak brightness difference and a first gamma curve preset for the display panel; and adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel.

[0019] A computer program product. The computer program product includes a computer program which, when executed by a processor, implements the following steps: obtaining the actual peak brightness of the display panel; determining the peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel; determining a compensation voltage according to the peak brightness difference and a first gamma curve preset for the display panel; and adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel.

[0020] The above-mentioned method, system, device, equipment, computer-readable storage medium and computer program product for adjusting the peak brightness of a display panel. First, obtain the actual peak brightness of the display panel, and then determine the peak brightness difference according to the actual peak brightness of the display panel and the preset target peak brightness, thereby determining the gap between the actual peak brightness and the target peak brightness of the current display panel, which facilitates subsequent adjustment of the display panel. Then, according to the peak brightness difference and the first gamma curve preset for the display panel, the compensation voltage can be determined. Then, by adjusting the power supply voltage of the display panel according to the compensation voltage, the peak brightness of the display panel can be adjusted. Since the compensation voltage is obtained based on the brightness difference between the actual peak brightness and the preset target peak brightness, adjusting the power supply voltage of the display panel using the compensation voltage can make the peak brightness of the display panel reach the target peak brightness, thus achieving the effect of improving the peak brightness of the display panel. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a flowchart of a method for adjusting the peak brightness of a display panel in an embodiment;

[0023] Figure 2 It is a flowchart of a method for determining the compensation voltage in an embodiment;

[0024] Figure 3 It is a flowchart of a method for converting a first gamma curve to a second gamma curve in an embodiment;

[0025] Figure 4 It is a flowchart of a method for calculating the compensation voltage in an embodiment;

[0026] Figure 5 It is a graph of a first gamma curve in an embodiment;

[0027] Figure 6 Graph of the second gamma curve in one embodiment;

[0028] Figure 7 Flowchart of a method for obtaining the actual peak brightness of a display panel in one embodiment;

[0029] Figure 8 Flowchart of a method for obtaining the actual peak brightness of a display panel in another embodiment;

[0030] Figure 9 Flowchart of a method for adjusting the peak brightness of a display panel in one embodiment;

[0031] Figure 10 Structural diagram of a system for adjusting the peak brightness of a display panel in one embodiment;

[0032] Figure 11 Structural diagram of a device for adjusting the peak brightness of a display panel in one embodiment;

[0033] Figure 12 Internal structural diagram of a computer device in one embodiment.

[0034] Explanation of reference numerals: 10 - display panel, 20 - driving circuit, 30 - processor. Detailed implementation manners

[0035] For ease of understanding of this application, the following will describe this application more comprehensively with reference to the relevant drawings. Embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] It can be understood that the terms "first", "second", etc. used in this application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0038] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In addition, in the following embodiments, "connection", if there is an electrical signal or data transmission between the connected objects, should be understood as "electrical connection", "communication connection", etc.

[0039] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising", "has / including", etc. specify the presence of the stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0040] In one embodiment, as Figure 1 shown, a method for adjusting the peak brightness of a display panel is provided, and the method includes:

[0041] Step S100, obtaining the actual peak brightness of the display panel.

[0042] Specifically, a preset number of pixels on the display panel can be controlled to emit light, and then the brightness value when the preset number of pixels on the display panel emit light is measured as the actual peak brightness of the display panel.

[0043] Exemplarily, the preset number of pixels can be 1% of the pixels on the display panel. Since the supply voltage received by the display panel is affected by the trace impedance of the display panel and a voltage drop occurs, controlling only 1% of the pixels on the display panel to emit light will result in a lower voltage drop of the supply voltage of the display panel. Therefore, the brightness when 1% of the pixels emit light can be used to represent the actual peak brightness of the display panel.

[0044] Step S110, determining the peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel.

[0045] Wherein, the target peak brightness can be the brightness required by the customer. Thus, the peak brightness difference can be determined through the gap between the actual peak brightness and the target peak brightness.

[0046] Step S120, determining the compensation voltage according to the peak brightness difference and the first gamma curve preset in the display panel.

[0047] Wherein, the first gamma curve is a gamma curve with the first brightness as the maximum brightness. The first brightness is the actual peak brightness when the supply voltage of the display panel has not been adjusted, and it is less than the target peak brightness. The first gamma curve represents the brightness curve when the display panel is supplied with a supply voltage that has not been compensated by a compensation voltage. It can be understood that the first gamma curve corresponds to the normal display mode of the display panel.

[0048] Exemplarily, the first brightness can be 1000 nit, and the target peak brightness can be 1200 nit.

[0049] Step S130: Adjust the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel.

[0050] Exemplarily, the greater the power supply voltage of the display panel, the higher the brightness of the display panel, and their relationship is proportional. The specific corresponding relationship is characterized by a preset gamma curve in the display panel.

[0051] Specifically, after determining the compensation voltage, the first preset power supply voltage corresponding to the actual peak brightness of the display panel can be adjusted by using the compensation voltage. For example, after adding the compensation voltage to the first preset power supply voltage corresponding to the current actual peak brightness of the display panel, the target power supply voltage is obtained, and the target power supply voltage is used as the new power supply voltage of the display panel to supply power to the display panel. In the above process, since the compensation voltage is obtained based on the peak brightness difference between the actual peak brightness and the preset target peak brightness, adjusting the power supply voltage of the display panel by using the compensation voltage can make the peak brightness of the display panel reach the target peak brightness, and the compensation voltage is the voltage that makes the peak brightness of the display panel exactly reach the target peak brightness, so there will be no situation of waste due to excessive voltage.

[0052] In this embodiment, first obtain the actual peak brightness of the display panel. Then, based on the actual peak brightness of the display panel and the preset target peak brightness, the peak brightness difference can be determined, thereby determining the gap between the current actual peak brightness and the target peak brightness of the display panel, which is convenient for subsequent adjustment of the display panel. Then, according to the peak brightness difference and the first gamma curve preset in the display panel, the compensation voltage can be determined. Then, adjusting the power supply voltage of the display panel according to the compensation voltage can adjust the peak brightness of the display panel. Since the compensation voltage is obtained based on the brightness difference between the actual peak brightness and the preset target peak brightness, adjusting the power supply voltage of the display panel by using the compensation voltage can make the peak brightness of the display panel reach the target peak brightness, thus achieving the effect of improving the peak brightness of the display panel.

[0053] In one embodiment, as Figure 2 shown, step S120: Determine the compensation voltage according to the peak brightness difference and the first gamma curve preset in the display panel. The method includes:

[0054] Step S200: Convert the first gamma curve into a second gamma curve according to the peak brightness difference.

[0055] Among them, the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve.

[0056] Specifically, the second gamma curve is a gamma curve with the second luminance as the maximum luminance. The second luminance is a luminance value jointly determined according to the actual peak luminance and the luminance difference of the display panel. The second gamma curve represents the luminance curve when the display panel is powered by a power supply voltage compensated by a compensation voltage.

[0057] Exemplarily, the second luminance can be 1200 nits.

[0058] Step S210, determine the compensation voltage according to the actual peak luminance and the second gamma curve.

[0059] Specifically, substituting the actual peak luminance into the second gamma curve can determine the voltage corresponding to the actual peak luminance. Then, according to the difference between the voltage corresponding to the actual peak luminance and the maximum voltage corresponding to the maximum gray level of the second gamma curve, the compensation voltage can be determined.

[0060] It should be noted that before implementing the method of this application, gamma calibration will be performed on the display panel. Gamma calibration can determine the driving voltage corresponding to each gray level of the display panel in each gamma segment. Thus, the voltage values of the preset binding point gray levels in each second gamma curve can be obtained by looking up a table.

[0061] Specifically, only one gamma curve, i.e., the first gamma curve, is set in the chip of the display panel. The situation applicable to this solution is that the display panel cannot reach the target peak luminance when adjusting the luminance according to the preset first gamma curve. Therefore, it is necessary to convert the first gamma curve in the display panel into a second gamma curve, so that there is still only one gamma curve in the chip of the display panel, thereby saving costs.

[0062] In this embodiment, the first gamma curve is converted into the second gamma curve through the peak luminance difference. Since the maximum voltage corresponding to the maximum gray level of the second gamma curve is determined based on the peak luminance difference, and the peak luminance difference is obtained by testing the display panel, the maximum voltage corresponding to the maximum gray level of the second gamma curve takes into account the possible process errors of the display panel. Using the maximum voltage corresponding to the maximum gray level of the second gamma curve to determine the compensation voltage can eliminate the possible process errors of the display panel, and then determine the compensation voltage according to the actual peak luminance and the second gamma curve, thereby facilitating the adjustment of the power supply voltage of the display panel.

[0063] In one embodiment, as Figure 3 shown, step S200, convert the first gamma curve into the second gamma curve according to the peak luminance difference. It includes:

[0064] Step S300: Determine the maximum brightness value corresponding to the maximum gray level of the second gamma curve according to the peak brightness difference and the maximum brightness value corresponding to the maximum gray level of the first gamma curve.

[0065] Specifically, the maximum brightness value corresponding to the maximum gray level of the second gamma curve is greater than or equal to the target peak brightness, so as to ensure that the display panel can reach the target peak brightness when adjusting the brightness according to the second gamma curve.

[0066] Specifically, adding the maximum brightness value corresponding to the first gamma curve and the peak brightness difference can obtain the maximum brightness value corresponding to the second gamma curve. Among them, the maximum brightness value corresponding to the first gamma curve is the actual peak brightness of the display panel before the compensated voltage adjustment, and the peak brightness difference is the gap between the actual peak brightness and the target peak brightness of the display panel obtained through testing. Therefore, adding the maximum brightness value corresponding to the first gamma curve and the peak brightness difference can obtain the maximum brightness value corresponding to the second gamma curve. Thus, it is convenient for the display panel to adjust the brightness according to the second gamma curve.

[0067] Exemplarily, the gamma value of the first gamma curve and the gamma value of the second gamma curve can be the same or different. For example, the gamma value of the first gamma curve and the gamma value of the second gamma curve can be the same and both are 2.2. The difference is that the maximum brightness corresponding to the 255 gray level of the first gamma curve is the actual peak brightness, while the maximum brightness corresponding to the 255 gray level of the second gamma curve is the actual peak brightness plus the peak brightness difference.

[0068] Step S310: Determine the second gamma curve according to the gamma value of the first gamma curve and the maximum brightness value corresponding to the maximum gray level of the second gamma curve.

[0069] Specifically, the gamma value of the first gamma curve is the gamma value corresponding to the display panel, that is, the gamma value corresponding to the second gamma curve. Therefore, knowing the gamma value and the maximum brightness value of the second gamma curve, the second gamma curve can be determined.

[0070] In this embodiment, according to the peak brightness difference, the first gamma curve can be converted into the second gamma curve. Therefore, by adjusting the brightness of the display panel through the second gamma curve, the brightness of the display panel can meet the standard.

[0071] In one embodiment, as Figure 4 shown, step S210: Determine the compensation voltage according to the actual peak brightness and the second gamma curve. It includes:

[0072] Step S400: Determine the first gray level corresponding to the actual peak brightness on the second gamma curve according to the actual peak brightness and the second gamma curve.

[0073] Exemplarily, when the first gamma curve is adopted, when the gray level is the maximum value of 255, the corresponding brightness of the display panel is the actual peak brightness. When the maximum brightness of the first gamma curve is converted into the second gamma curve, the corresponding gray level may be 217. Therefore, when the second gamma curve is adopted, as the gray level increases, there is still room for the brightness of the display panel to increase. Therefore, the brightness value of the display panel can be adjusted according to the second gamma curve so that the brightness value of the display panel reaches the target peak brightness.

[0074] Exemplarily, assume that the maximum brightness of the first gamma curve is 300 nit, and the maximum brightness of the second gamma curve is 430 nit. The gray level corresponding to the 300 nit brightness of the first gamma curve is 255. Thus, through formula calculation: 255*(300 / 430)^(1 / 2.2) = 217, it can be converted to obtain that the gray level corresponding to the 300 nit brightness in the second gamma curve is 217.

[0075] Exemplarily, the first gamma curve is as Figure 5 shown, and its maximum brightness is the first brightness. The second gamma curve is as Figure 6 shown. Its maximum brightness is the second brightness, and the second brightness is greater than the first brightness.

[0076] Step S410, determine the compensation voltage according to the first gray level and the maximum gray level of the second gamma curve.

[0077] Exemplarily, the voltage value corresponding to the gray level of the actual peak brightness corresponding to the second gamma curve can be calculated through the voltage values of the preset binding points. For example, two of the binding point gray levels in the second gamma curve are 207 and 239, and the gray level of the actual peak brightness corresponding to the second gamma curve is 217, which is between 207 and 239. Then, through the calculation method of linear interpolation, the voltage value corresponding to the 217 gray level is calculated. For example, the gamma corresponding to the 207 gray level is A, and the gamma corresponding to the 239 gray level is B. Then the gamma corresponding to the 217 gray level is: A+(217 - 207)*(B - A) / (239 - 207). Thus, through the method of linear interpolation, the voltage corresponding to the 217 gray level is calculated. Then, according to the difference between the voltage value corresponding to the maximum gray level (255 gray level) in the second gamma curve and the voltage value corresponding to the 217 gray level, the compensation voltage can be obtained.

[0078] It should be noted that before implementing the method of the present application, gamma debugging will be performed on the display panel to determine the driving voltage corresponding to each gray level of the display panel in each gamma segment. Thus, the voltage values of the preset binding point gray levels in the second gamma curve can be obtained by looking up the table.

[0079] Exemplarily, the above display panel can be a Micro Organic Light-Emitting Diode (Micro OLED) display panel, a Quantum Dot Light Emitting Diodes (QLED) display panel, etc. Hereinafter, the OLED display panel will be taken as an example for introduction. OLED display panels are used in devices such as mobile phones and tablets, which will not be listed one by one here. The gamma of the OLED display panel 300 is generally set to multiple gamma bands. Taking a mobile phone as an example, the gamma of the mobile phone is generally set to 13 gamma bands, including 1 High Brightness Mode (HBM), three Always on Display (AOD) modes, and 9 Normal modes. The 9 Normal modes can be named nor1, nor2... nor9 in sequence. Each of the 13 gamma bands has a specified number of gray levels, and the brightness corresponding to each gray level in each gamma band is different from that in other gamma bands.

[0080] Among them, the gray level refers to how many levels of brightness a color can have from dark to light. The more the brightness of a color changes, the more gray levels there are. The gray level of a display mainly depends on the digital-to-analog conversion bit number of the system. For example, an 8-bit processing system has 2 to the 8th power levels of gray levels, that is, 256 levels of gray levels, which means there are 256 brightness changes from black to white. In addition, the gray level of the display can also be 64, 512, 1024, etc., which will not be listed one by one here. In the present invention, the display screen with 256 levels of gray levels is taken as an example for introduction. The 256 levels of gray levels are W0 to W255 in ascending order.

[0081] In this embodiment, by substituting the actual peak brightness into the second gamma curve, the compensation voltage that can adjust the actual peak brightness of the display panel to the target peak brightness can be obtained through the second gamma curve, which is convenient for subsequent adjustment of the display panel to increase the peak brightness of the display panel to meet the user's requirements.

[0082] In one embodiment, as Figure 7 shown, step S100, obtain the actual peak brightness of the display panel.

[0083] It includes:

[0084] Step S700, provide multiple display panels, and respectively obtain the actual peak brightness of each display panel.

[0085] Exemplarily, 50-100 display panels of the same specification can be randomly selected, and a preset number of pixels on the display panels are respectively controlled to emit light. Then, the brightness values when the preset number of pixels on each display panel emit light are measured as the actual peak brightness corresponding to each display panel.

[0086] Exemplarily, the preset number of pixels can be 1% of the pixels on the display panel. Since the supply voltage received by the display panel will have a voltage drop due to the influence of the trace impedance of the display panel, controlling only 1% of the pixels on the display panel to emit light will result in a lower voltage drop of the supply voltage of the display panel. Therefore, the brightness when 1% of the pixels emit light can be used to represent the actual peak brightness of the display panel.

[0087] Step S110, determine the peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel. It includes:

[0088] Step S710, determine the first peak brightness difference of each display panel for the actual peak brightness and the target peak brightness of each display panel.

[0089] Specifically, subtract the target peak brightness from the actual peak brightness of each display panel respectively to determine the first peak brightness difference corresponding to each display panel.

[0090] Step S720, determine the peak brightness difference according to the first peak brightness difference of each display panel.

[0091] Specifically, according to the distribution state of the brightness differences of each display panel, select the brightness difference values with concentrated distribution as the peak brightness difference. Since the values with concentrated distribution among the brightness differences of multiple display panels are selected, the obtained peak brightness difference has better universality, is applicable to more display panels, and is also the closest to the actual peak brightness difference of the display panel, thereby being able to eliminate the process errors between different display panels. Referring to this peak brightness difference for subsequent adjustment of the peak voltage of the display panel, the probability of adjusting the peak voltage of the new display panel to meet the standard is the highest.

[0092] Exemplarily, a normal distribution curve of the brightness differences of multiple display panels can be drawn, and the values with concentrated distribution among them are selected as the peak brightness difference. It is also possible to calculate the average value of the brightness differences of multiple display panels as the peak brightness difference.

[0093] In this embodiment, through testing, the actual peak brightness of a large number of display panels is tested, and then the peak brightness difference is determined according to the brightness difference between the actual peak brightness and the target peak brightness of multiple display panels, so as to obtain the peak brightness difference that is closest to the actual attributes of the display panel, eliminate the influence of the process errors of individual display panels, and facilitate subsequent accurate adjustment of the actual peak brightness of the display panel.

[0094] Exemplarily, due to the influence of trace impedance, connection impedance, and glass impedance, the supply voltage will experience a voltage drop during transmission in the display panel, resulting in a certain difference in the supply voltage received by different regions on the display panel. As a result, the brightness of different regions on the display panel is inconsistent, and there may be a certain difference in the brightness of different display areas on the display panel, leading to poor brightness uniformity of the display panel. Therefore, for different display areas of the display panel, different compensation voltages are required to reach the target peak brightness. The display panel can be divided into multiple display areas, and for each display area, the compensation voltage corresponding to each display area is calculated through the method in the above embodiments, and the supply voltage of the corresponding driving circuit is adjusted according to the compensation voltage corresponding to each display area respectively, so that the supply voltage of multiple display areas of the display panel can be adjusted specifically, making the brightness uniformity of the display panel better and each display area of the display panel can reach the target peak brightness.

[0095] In one embodiment, as Figure 8 shown, step S100, obtain the actual peak brightness of the display panel.

[0096] It includes:

[0097] Step S800, for each display panel, obtain the peak brightness of its different display areas respectively.

[0098] Specifically, due to the influence of trace impedance, connection impedance, and glass impedance, the supply voltage will experience a voltage drop during transmission in the display panel, resulting in a certain difference in the supply voltage received by different regions on the display panel, and thus the brightness of different regions on the display panel is inconsistent, and the brightness of different display areas on the display panel may have a certain difference.

[0099] Specifically, the display panel is divided into multiple display areas, and the actual peak brightness values of different display areas of the display panel are tested respectively.

[0100] Step S810, obtain the actual peak brightness of the corresponding display panel according to the peak brightness of each display area.

[0101] Specifically, among the actual peak brightness values of different display areas of the display panel, select the brightness with the most concentrated distribution as the actual peak brightness of the display panel. Since the value of the concentrated distribution of the actual peak brightness of multiple display areas is selected, the obtained actual peak brightness can better represent the overall actual peak brightness of the display panel.

[0102] Exemplarily, a normal distribution curve of the actual peak brightness values of different display areas of the display panel can be drawn, and the values with concentrated distribution can be selected as the actual peak brightness value of the display panel. Alternatively, the average value of the actual peak brightness values of different display areas of the display panel can be calculated as the actual peak brightness value of the display panel.

[0103] In this embodiment, through testing, the actual peak brightness of different display areas of the display panel is tested, and then the overall actual peak brightness of the display panel is obtained, so that the obtained actual peak brightness is closest to the overall situation of the display panel, which is convenient for the subsequent calculated compensation voltage to ensure the display uniformity of the display panel to the greatest extent.

[0104] In one embodiment, as Figure 9 shown, the method for adjusting the peak brightness of the display panel further includes:

[0105] Step S900, obtaining a peak brightness adjustment instruction for adjusting the actual peak brightness.

[0106] Specifically, the display panel does not need to use the compensation voltage to adjust the actual peak brightness at all times. And using the compensation voltage to adjust will also increase the power consumption of the display panel. Therefore, to solve the above problems, the display panel is set to obtain a peak brightness adjustment instruction for adjusting the actual peak brightness issued by the user.

[0107] Step S910, according to the peak brightness adjustment instruction, using the compensation voltage to adjust the power supply voltage of the display panel so that the peak brightness of the display panel is the target peak brightness.

[0108] Specifically, when the peak brightness adjustment instruction is received, the compensation voltage is called to adjust the power supply voltage of the display panel to adjust the peak brightness of the display panel.

[0109] In this embodiment, the display panel selects whether to call the compensation voltage to adjust the actual peak brightness of the display panel according to the user's instruction. Thus, it is more flexible and can balance the performance and power consumption of the display panel.

[0110] It should be understood that although Figures 1 - 4 、 Figures 7 - 9 the steps in the flowchart are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, Figures 1 - 4 、 Figures 7 - 9At least some of the steps may include multiple steps or multiple stages, and these steps or stages do not necessarily need to be executed and completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turns with at least some of the steps or stages in other steps or other steps.

[0111] In one embodiment, as Figure 10 shown, a display panel peak brightness adjustment system is provided, and the system includes: a driving circuit 20 and a processor 30.

[0112] The driving circuit 20 is connected to the display panel 10 to be adjusted, and is used to provide a power supply voltage for the display panel 10 to be adjusted to drive the pixels on the display panel 10 to emit light.

[0113] The processor 30 is connected to the driving circuit 20. The processor 30 is used to control the driving circuit 20 to drive the pixels of the display panel 10 to emit light, and obtain the actual peak brightness of the display panel 10; determine the peak brightness difference according to the actual peak brightness and the target peak brightness value of the display panel 10; determine the compensation voltage according to the peak brightness difference and the first gamma curve preset in the display panel 10; adjust the power supply voltage of the display panel 10 according to the compensation voltage to adjust the peak brightness of the display panel 10. The actual peak brightness is directly preset in the processor 30 or obtained by the processor 30.

[0114] In this embodiment, by setting the driving circuit to provide a driving power supply for the display panel, the processor obtains the brightness when a preset number of pixels of the display panel emit light, and the actual peak brightness of the display panel can be obtained. Then, according to the actual peak brightness of the display panel and the preset target peak brightness, the peak brightness difference can be determined, thereby determining the gap between the actual peak brightness and the target peak brightness of the current display panel, which is convenient for subsequent adjustment of the display panel. Then, according to the peak brightness difference and the first gamma curve preset in the display panel, the compensation voltage can be determined. Then, by adjusting the power supply voltage of the display panel according to the compensation voltage, the peak brightness of the display panel can be adjusted. Since the compensation voltage is obtained according to the brightness difference between the actual peak brightness and the preset target peak brightness, adjusting the power supply voltage of the display panel with the compensation voltage can make the peak brightness of the display panel reach the target peak brightness, thus achieving the effect of improving the peak brightness of the display panel.

[0115] In one embodiment, the processor 30 is further configured to convert the first gamma curve into a second gamma curve according to the peak brightness difference, where the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve; and determine the compensation voltage according to the actual peak brightness and the second gamma curve.

[0116] In one embodiment, the processor 30 is further configured to determine the maximum brightness value corresponding to the maximum gray level of the second gamma curve according to the peak brightness difference and the maximum brightness value corresponding to the maximum gray level of the first gamma curve; and determine the second gamma curve according to the gamma value of the first gamma curve and the maximum brightness value corresponding to the maximum gray level of the second gamma curve.

[0117] In one embodiment, the processor 30 is further configured to determine the first gray level of the second gamma curve corresponding to the actual peak brightness according to the actual peak brightness and the second gamma curve; and determine the compensation voltage according to the first gray level and the maximum gray level of the second gamma curve.

[0118] In one embodiment, the processor 30 is further configured to provide a plurality of display panels and respectively obtain the actual peak brightness of each display panel.

[0119] In one embodiment, the processor 30 is further configured to determine the first peak brightness difference of each display panel for the actual peak brightness and the target peak brightness of each display panel; and determine the peak brightness difference according to the first peak brightness difference of each display panel.

[0120] In one embodiment, the processor 30 is further configured to respectively obtain the peak brightness of different display regions of each display panel; and obtain the actual peak brightness of the corresponding display panel according to the peak brightness of each display region.

[0121] In one embodiment, the processor 30 is configured to obtain a peak brightness adjustment instruction for adjusting the peak brightness; and adjust the power supply voltage of the display panel according to the peak brightness adjustment instruction by using the compensation voltage, so that the peak brightness of the display panel is the target peak brightness.

[0122] In one embodiment, as Figure 11 shown, a display panel peak brightness adjustment device is provided, and the device includes: a brightness acquisition module 1101, a brightness difference determination module 1102, a compensation determination module 1103, and an adjustment module 1104.

[0123] Wherein, the brightness acquisition module 1101 is configured to directly preset or obtain the actual peak brightness of the display panel.

[0124] The brightness difference determination module 1102 is connected to the brightness acquisition module 1101 and is configured to determine the peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel.

[0125] The compensation determination module 1103 is connected to the brightness difference determination module 1102 and is configured to determine the compensation voltage according to the peak brightness difference and the first gamma curve preset in the display panel.

[0126] The adjustment module 1104 is connected to the compensation determination module 1103 and is configured to adjust the power supply voltage of the display panel according to the compensation voltage so as to adjust the peak brightness of the display panel.

[0127] In one embodiment, the brightness acquisition module 1101 further includes: a brightness acquisition unit. The brightness acquisition unit is configured to provide a plurality of display panels and respectively acquire the actual peak brightness of each display panel.

[0128] In one embodiment, the brightness difference determination module 1102 further includes: a brightness difference determination unit and a peak brightness difference determination unit. The brightness difference determination unit is configured to determine the first peak brightness difference of each display panel for the actual peak brightness and the target peak brightness of each display panel. The peak brightness difference determination unit is configured to determine the peak brightness difference according to the first peak brightness difference of each display panel.

[0129] In one embodiment, the compensation determination module 1103 further includes: a conversion unit and a compensation voltage determination unit. The conversion unit is configured to convert the first gamma curve into a second gamma curve according to the peak brightness difference, wherein the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve. The compensation voltage determination unit is configured to determine the compensation voltage according to the actual peak brightness and the second gamma curve.

[0130] In one embodiment, the conversion unit includes: a maximum brightness determination subunit and a curve determination subunit. The maximum brightness determination subunit is configured to determine the maximum brightness value corresponding to the maximum gray level of the second gamma curve according to the peak brightness difference and the maximum brightness value corresponding to the maximum gray level of the first gamma curve. The curve determination subunit is configured to determine the second gamma curve according to the gamma value of the first gamma curve and the maximum brightness value corresponding to the maximum gray level of the second gamma curve.

[0131] In one embodiment, the compensation voltage determination unit includes: a gray level determination subunit and a compensation voltage determination subunit. The gray level determination subunit is configured to determine the first gray level of the second gamma curve corresponding to the actual peak brightness according to the actual peak brightness and the second gamma curve. The compensation voltage determination subunit is configured to determine the compensation voltage according to the first gray level and the maximum gray level of the second gamma curve.

[0132] In one embodiment, the luminance acquisition module 1101 further includes: a regional luminance acquisition unit and a peak luminance determination unit. The regional luminance acquisition unit is configured to respectively acquire the peak luminance of different display regions of each display panel. The peak luminance determination unit is configured to acquire the actual peak luminance of the corresponding display panel according to the peak luminance of each display region.

[0133] In one embodiment, the display panel peak luminance adjustment device further includes: an instruction acquisition module and an instruction execution module. The instruction acquisition module is configured to acquire a peak luminance adjustment instruction for adjusting the peak luminance. The instruction execution module is configured to adjust the power supply voltage of the display panel by using a compensation voltage according to the peak luminance adjustment instruction, so that the peak luminance of the display panel is the target peak luminance.

[0134] For the specific limitations of the display panel peak luminance adjustment device, reference may be made to the limitations on the display panel peak luminance adjustment method in the foregoing text, which will not be elaborated herein. Each module in the above display panel peak luminance adjustment device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above respective modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division. There may be other division methods in actual implementation.

[0135] In one embodiment, a computer device is provided. The internal structure diagram of the computer device can be as Figure 12 shown. The computer device includes a processor, a memory, and a network interface connected through a system bus. Among them, the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is configured to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a display panel peak luminance adjustment method is implemented.

[0136] Those skilled in the art can understand that Figure 12 the structure shown in

[0137] In one embodiment, a computer device is provided, which includes a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0138] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0139] In one embodiment, a computer program product is provided, which includes a computer program. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0140] Those of ordinary skill in the art can understand that all or part of the processes in the above method embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above method embodiments. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0141] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", "ideal embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0142] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0143] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A method for adjusting the peak brightness of a display panel, characterized in that, The adjustment method includes: Obtaining the actual peak brightness of the display panel; Determining a peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel; Determining a compensation voltage according to the peak brightness difference and a first gamma curve preset in the display panel; and Adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel; The step of determining the compensation voltage according to the peak brightness difference and the first gamma curve preset in the display panel includes: Converting the first gamma curve into a second gamma curve according to the peak brightness difference, where the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve; and Determining the compensation voltage according to the actual peak brightness and the second gamma curve.

2. The method for adjusting the peak brightness of a display panel according to claim 1, characterized in that, The maximum brightness value corresponding to the maximum gray level of the second gamma curve is greater than or equal to the target peak brightness, where the step of converting the first gamma curve into the second gamma curve according to the peak brightness difference includes: Determining the maximum brightness value corresponding to the maximum gray level of the second gamma curve according to the peak brightness difference and the maximum brightness value corresponding to the maximum gray level of the first gamma curve; and Determining the second gamma curve according to the gamma value of the first gamma curve and the maximum brightness value corresponding to the maximum gray level of the second gamma curve.

3. The method for adjusting the peak brightness of a display panel according to claim 1, characterized in that, The step of determining the compensation voltage according to the actual peak brightness and the second gamma curve includes: Determining a first gray level corresponding to the actual peak brightness on the second gamma curve according to the actual peak brightness and the second gamma curve; and Determining the compensation voltage according to the first gray level and the maximum gray level of the second gamma curve.

4. The method for adjusting the peak brightness of a display panel according to claim 1, characterized in that, The step of obtaining the actual peak brightness of the display panel includes: Providing a plurality of the display panels and respectively obtaining the actual peak brightness of each display panel; The step of determining the peak brightness difference according to the actual peak brightness and the target peak brightness of each display panel includes: Determining a first peak brightness difference for each display panel according to the actual peak brightness and the target peak brightness of each display panel; and Determining the peak brightness difference according to the first peak brightness differences of each display panel.

5. The method for adjusting the peak brightness of a display panel according to claim 1, characterized in that, The step of obtaining the actual peak brightness of the display panel includes: For each display panel, respectively obtaining the peak brightness of its different display areas; and Obtaining the actual peak brightness of the corresponding display panel according to the peak brightnesses of each display area.

6. The method for adjusting the peak brightness of a display panel according to any one of claims 1-5, characterized in that, The adjustment method further includes: Obtaining a peak brightness adjustment instruction for adjusting the peak brightness; and According to the peak brightness adjustment instruction, adjusting the power supply voltage of the display panel by using the compensation voltage so that the peak brightness of the display panel is the target peak brightness.

7. A system for adjusting the peak brightness of a display panel, characterized in that, The adjustment system includes: A driving circuit, connected to a display panel to be adjusted, for providing a power supply voltage to the display panel to be adjusted; and, A processor, connected to the driving circuit, the processor is configured to: determine a peak brightness difference based on the actual peak brightness and the target peak brightness of the display panel, determine a compensation voltage based on the peak brightness difference and a first gamma curve preset for the display panel, and is further configured to adjust the power supply voltage of the display panel according to the compensation voltage; wherein the actual peak brightness is directly preset in the processor or obtained by the processor; The processor is further configured to convert the first gamma curve into a second gamma curve according to the peak brightness difference, wherein the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve; and determine the compensation voltage according to the actual peak brightness and the second gamma curve.

8. A device for adjusting the peak brightness of a display panel, characterized in that, The device includes: A brightness acquisition module, for directly presetting or acquiring the actual peak brightness of the display panel; A brightness difference determination module, connected to the brightness acquisition module, for determining a peak brightness difference according to the actual peak brightness and the target peak brightness of the display panel; A compensation determination module, connected to the brightness difference determination module, for determining a compensation voltage according to the peak brightness difference and a first gamma curve preset for the display panel; and, An adjustment module, connected to the compensation determination module, for adjusting the power supply voltage of the display panel according to the compensation voltage to adjust the peak brightness of the display panel; The compensation determination module includes a conversion unit and a compensation voltage determination unit, the conversion unit is configured to convert the first gamma curve into a second gamma curve according to the peak brightness difference, wherein the maximum brightness value corresponding to the maximum gray level of the first gamma curve is the actual peak brightness, and the maximum brightness value corresponding to the maximum gray level of the first gamma curve is less than the maximum brightness value corresponding to the maximum gray level of the second gamma curve; the compensation voltage determination unit is configured to determine the compensation voltage according to the actual peak brightness and the second gamma curve.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the display panel peak brightness adjustment method according to any one of claims 1 to 6.

10. A computer-readable storage medium, having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the display panel peak brightness adjustment method according to any one of claims 1 to 6.

11. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the display panel peak brightness adjustment method according to any one of claims 1 to 6.

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