Charging time determination method, charging time determination system, and display device

Abstract

The application discloses a charging time determination method, a charging time determination system and a display device. The charging time determination method obtains a charging time brightness change curve of a corresponding test position by corresponding brightness of the test position under at least three gray scales and corresponding charging time, and then determines a charging time corresponding to the highest brightness in one or more charging time brightness change curves as an optimal charging time. The process of determining the optimal charging time is simple, efficient and accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a charging time determination method, a charging time determination system and a display device. BACKGROUND

[0002] At present, the picture quality of display products is increasingly concerned by users. The display products charge corresponding sub-pixels in each frame picture under the joint action of scanning signals and data signals, and the charging time directly affects the brightness and chroma of each sub-pixel. Therefore, it is crucial to evaluate the optimal charging time of the display product for the picture display.

[0003] However, the determination of the charging time is mainly realized by manual operation at the present stage, that is, a camera CA310 is used to measure the brightness corresponding to different charging times, and then a charging time brightness curve is drawn to evaluate the optimal charging time. Since the charging time of different points and different gray scales of the display device needs to be evaluated, the data acquisition takes a long time and is prone to errors, and it is difficult to determine the optimal charging time. At the same time, since only one version of parameters is used for a batch of chips or products, the inter-chip difference problem caused by different charging times between chips cannot be avoided. SUMMARY

[0004] The present application provides a charging time determination method and a charging time determination system to alleviate the technical problem that the optimal charging time is difficult to determine.

[0005] In a first aspect, the present application provides a charging time determination method, which comprises: obtaining corresponding frame images under at least three gray scales; determining the brightness and corresponding charging time of at least one test position in each frame image; obtaining the charging time brightness change curve of the corresponding test position according to the brightness and corresponding charging time of each test position under at least three gray scales; and determining the charging time corresponding to the highest brightness in the charging time brightness change curve as the optimal charging time.

[0006] In some embodiments, the step of obtaining corresponding frame images under at least three gray scales comprises: configuring a frame image as a full-load picture.

[0007] In some embodiments, the step of obtaining corresponding frame images under at least three gray scales further comprises: constructing at least three gray scales including a low gray scale, a middle gray scale and a high gray scale; obtaining a full-load picture corresponding to the low gray scale; obtaining a full-load picture corresponding to the middle gray scale; and obtaining a full-load picture corresponding to the high gray scale.

[0008] In some embodiments, the step of determining the brightness and the corresponding charging time of at least one test position in each frame image comprises: determining the brightness and the corresponding charging time of at least three test positions in each frame image; the area of each frame image is configured to include a first area, a second area and a third area arranged in sequence; the first of the at least three test positions is configured to be located in the first area; the second of the at least three test positions is configured to be located in the second area; and the third of the at least three test positions is configured to be located in the third area.

[0009] In some embodiments, the step of determining the brightness and the corresponding charging time of at least one test position in each frame image comprises: obtaining the scanning signal and the data signal received by each test position in a frame; and determining the overlap time between the pulse of the scanning signal and the pulse of the data signal in a frame as the charging time.

[0010] In some embodiments, the step of determining the overlap time between the pulse of the scanning signal and the pulse of the data signal in a frame as the charging time comprises: obtaining the frequency and the phase of the scanning signal; obtaining the frequency and the phase of the data signal; and changing the phase of the scanning signal and / or the frequency of the data signal while keeping the frequency of the scanning signal and the frequency of the data signal unchanged, so as to adjust the charging time corresponding to the highest brightness in the charging time brightness variation curve to be the optimal charging time.

[0011] In a second aspect, the present application provides a charging time determination system, which comprises a display device, an obtaining module, a detection module and a processor. The display device is configured to display a corresponding frame image according to a received gray scale, and each frame image comprises at least one test position. The obtaining module is configured to obtain brightness data of the frame image at at least three gray scales, and the brightness data comprises the brightness of each test position. The detection module is connected to the display device and is configured to capture a corresponding scanning signal and a data signal in the display device. The processor is connected to the display device, the obtaining module and the detection module, and is configured to determine a corresponding charging time according to the corresponding scanning signal and the data signal, to obtain a charging time brightness variation curve of the corresponding test position according to the brightness of each test position at the at least three gray scales and the corresponding charging time, and to determine the charging time corresponding to the highest brightness in the charging time brightness variation curve as the optimal charging time of the display device.

[0012] In some embodiments, the obtaining module comprises a configuration unit, a first obtaining unit, a second obtaining unit and a third obtaining unit. The configuration unit is configured to configure the at least three gray scales to include a low gray scale, a middle gray scale and a high gray scale. The first obtaining unit is configured to obtain a heavy load picture corresponding to the low gray scale. The second obtaining unit is configured to obtain a heavy load picture corresponding to the middle gray scale. The third obtaining unit is configured to obtain a heavy load picture corresponding to the high gray scale.

[0013] In some embodiments, the processor comprises a determining unit, a first configuring unit, a second configuring unit, a third configuring unit and a fourth configuring unit. The determining unit is configured to determine the brightness and corresponding charging time of at least three test positions in each frame image. The first configuring unit is configured to configure the area of each frame image to comprise a first area, a second area and a third area distributed in sequence. The second configuring unit is configured to configure the first of the at least three test positions to be located in the first area. The third configuring unit is configured to configure the second of the at least three test positions to be located in the second area. The fourth configuring unit is configured to configure the third of the at least three test positions to be located in the third area.

[0014] In a third aspect, the present application provides a display device, which stores the optimal charging time in the charging time determination system in the at least one embodiment.

[0015] The charging time determination method and the charging time determination system provided by the present application can obtain the charging time brightness change curve of the corresponding test position by the brightness and corresponding charging time of the corresponding test position at least three gray scales, then obtain the same number of charging time brightness change curves according to the number of test positions, and determine the charging time corresponding to the highest brightness in one or more charging time brightness change curves as the optimal charging time. The process of determining the optimal charging time is simple, efficient and accurate. BRIEF DESCRIPTION OF DRAWINGS

[0016] The technical solutions and other beneficial effects of the present application will become apparent through the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0017] Figure 1 The flowchart of the charging time determination method provided by the embodiment of the present application.

[0018] Figure 2 The schematic diagram of the frame image under the corresponding gray scale provided by the embodiment of the present application.

[0019] Figure 3 The schematic diagram of the charging time brightness change curve provided by the embodiment of the present application.

[0020] Figure 4 The schematic diagram of the charging time determination provided by the embodiment of the present application.

[0021] Figure 5 The structural schematic diagram of the charging time determination system provided by the embodiment of the present application.

[0022] Figure 6 The working flowchart of the processor provided by the embodiment of the present application.

[0023] Figure 7 TheFigure 5 A structural schematic diagram of a display device is shown. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0025] In view of the technical problem that the optimal charging time is difficult to determine, the present embodiment provides a charging time determination method, please refer to Figures 1 to 7 As shown in the figure, the charging time determination method comprises the following steps: Figure 1

[0026] Step S10: Obtain the corresponding frame image under at least three gray scales. It needs to be explained that one gray scale corresponds to one frame image, the more the number of gray scales, the more the number of corresponding frame images, and the more accurate the charging time brightness change curve obtained subsequently.

[0027] Step S20: Determine the brightness of at least one test position in each frame image and the corresponding charging time. It needs to be explained that the original data corresponding to each frame image can include the brightness of each sub-pixel, and one sub-pixel can correspond to one or more test positions, so the brightness of each test position can be obtained from the original data. The specific determination process of the charging time will be described later.

[0028] Step S30: Obtain the charging time brightness change curve of the corresponding test position according to the brightness and the corresponding charging time of each test position under at least three gray scales. It needs to be explained that each test position can obtain a corresponding brightness and charging time in each frame image, so at least three groups of brightness and charging time can be obtained under at least three gray scales, and the charging time brightness change curve of the corresponding test position can be obtained by fitting with the charging time as the horizontal coordinate and the brightness as the vertical coordinate.

[0029] Step S40: Determine the charging time corresponding to the highest brightness in the charging time brightness change curve as the optimal charging time. It needs to be explained that the optimal charging time is to make the voltage of the pixel electrode reach the highest in the least time. It can be understood that the voltage of the pixel electrode is limited by at least one of the liquid crystal capacitor and the storage capacitor, so the height that the voltage of the pixel electrode can reach is limited.

[0030] ​The optimal charging time is determined by taking the charging time corresponding to the highest brightness in the charging time-brightness curve of the test position as the optimal charging time.

[0031] It can be understood that the charging time determination method provided in the embodiment can obtain the charging time-brightness curve of the test position by taking the brightness and the corresponding charging time of the test position at the at least three gray scales, and then obtain the same number of charging time-brightness curves according to the number of test positions, and determine the charging time corresponding to the highest brightness in one or more charging time-brightness curves as the optimal charging time. The process of determining the optimal charging time is simple, efficient and accurate.

[0032] Compared with the related art, the charging time determination method provided in the embodiment can automatically execute the process without the need for human intervention, thereby saving manpower and improving the efficiency of determining the optimal charging time.

[0033] Each test position can be a test point or a test block.

[0034] In one of the embodiments, the charging time determination method further includes: obtaining at least three gray scales corresponding to the heavy load picture; determining the brightness and the corresponding charging time of at least one test position in each heavy load picture; obtaining the charging time-brightness curve of the test position according to the brightness and the corresponding charging time of each test position at the at least three gray scales; and determining the charging time corresponding to the highest brightness in the charging time-brightness curve as the optimal charging time.

[0035] It should be noted that in the heavy load picture, a row of pixels is turned on and a row of pixels is turned off, and the potential of the data signal needs to be switched between high and low levels. At this time, the load of the data signal is the heaviest. That is, compared with the normal frame image, the optimal charging time obtained in the heavy load picture is more accurate and has a wider range of application. For example, if the optimal charging time is obtained in the light load picture, the corresponding sub-pixel may not reach the ideal brightness when charging at the optimal charging time in the heavy load picture.

[0036] A specific heavy load picture is shown in FIG. 48, which shows a heavy load picture with gray scales of 48, 128 and 255. In each dashed box, the upper drawing is a window diagram corresponding to the gray scale, and the lower drawing is a pixel diagram corresponding to the gray scale. Figure 2

[0037] ​In one of the embodiments, the method further comprises: constructing at least three gray scales including a low gray scale, a middle gray scale and a high gray scale; obtaining a heavy load picture corresponding to the low gray scale; obtaining a heavy load picture corresponding to the middle gray scale; and obtaining a heavy load picture corresponding to the high gray scale.

[0038] It should be noted that the at least three gray scales are respectively taken from the low gray scale, the middle gray scale and the high gray scale in the embodiment, which can better take into account the charging time of the full gray scale of 0-255, so that the optimal charging time can have better display brightness at each gray scale.

[0039] In one of the embodiments, the method further comprises: configuring the value range of the gray scale number of the low gray scale as 0-48; configuring the value range of the gray scale number of the middle gray scale as 49-128; and configuring the value range of the gray scale number of the high gray scale as 129-255.

[0040] It should be noted that the embodiment has found through long-term research that the specific gray scale range of the low gray scale, the middle gray scale and the high gray scale is further limited, which is beneficial to improve the compatibility of the optimal charging time under the full gray scale.

[0041] In one of the embodiments, the method further comprises: configuring the gray scale number of the low gray scale as 48; configuring the gray scale number of the middle gray scale as 128; and configuring the gray scale number of the high gray scale as 255.

[0042] It should be noted that the embodiment has found through long-term research that the optimal charging time obtained by taking the three gray scales as 48, 128 and 255 respectively can maximize the risk reduction of charging errors.

[0043] In one of the embodiments, the method further comprises: obtaining a frame image corresponding to at least three gray scales; determining the brightness and the corresponding charging time of at least three test positions in each frame image; obtaining a charging time brightness change curve of each test position according to the brightness and the corresponding charging time of each test position under at least three gray scales; and determining the charging time corresponding to the highest brightness in the plurality of charging time brightness change curves as the optimal charging time.

[0044] It should be noted that the test positions of each frame image are increased to at least three in the embodiment, and correspondingly, the obtained charging time brightness change curves are also increased to at least three. A highest brightness is obtained from more different charging time brightness change curves, and then the charging time corresponding to the highest brightness is determined as the optimal charging time, which is beneficial to improve the accuracy of the optimal charging time. The determination of the optimal charging time is shown in Figure 3 The abscissa represents the charging time, and the ordinate represents the brightness (Lv). The Figure 3Only a charging time brightness change curve is shown, the highest point on the ordinate is the highest brightness, and the corresponding abscissa scale of the highest point is the optimal charging time.

[0045] In one of the embodiments, the charging time determination method further comprises: configuring the region where each frame image is located comprises a first region, a second region and a third region distributed in sequence; configuring the first of the at least three test positions is located in the first region; configuring the second of the at least three test positions is located in the second region; configuring the third of the at least three test positions is located in the third region.

[0046] It needs to be explained that the optimal charging time obtained by the embodiment selected from different regions can take into account the charging time of each sub-pixel in different positions. Among them, the first region, the second region and the third region can be three regions from top to bottom of the display area, that is, the three regions are distributed in sequence along the extension direction of the data line, and the optimal charging time obtained can compensate for the voltage drop loss of the data line to a certain extent.

[0047] Among them, the fourth test position... and the test position after that can be selected in one of the first region, the second region and the third region, as long as it is not coincident with the test position selected in front, so as to obtain more accurate optimal charging time.

[0048] In one of the embodiments, as shown in Figure 4 The charging time determination method further comprises: obtaining the scanning signal and the data signal received by each test position in a frame; determining the overlap time between the pulse of the scanning signal and the pulse of the data signal in a frame as the charging time T-Charge.

[0049] It needs to be explained that the scanning signal can be obtained by phase shift of the clock signal CK, and the data signal can be obtained by phase shift of the data enable signal TP. Among them, the high potential VGH of the clock signal CK can control the corresponding transistor to open, and the low potential VGL of the clock signal CK can control the corresponding transistor to close.

[0050] In one of the embodiments, as shown in Figure 4 The charging time determination method further comprises: obtaining the frequency and phase of the scanning signal; obtaining the frequency and phase of the data signal; changing the phase of the scanning signal and / or the frequency of the data signal while keeping the frequency of the scanning signal and the frequency of the data signal unchanged, so as to adjust the charging time corresponding to the highest brightness in the charging time brightness change curve to the optimal charging time.

[0051] It needs to be explained that in the embodiment, the charging time is determined by the time interval between the rising edge of the data enable signal TP and the falling edge of the clock signal CK, therefore, changing the rising edge of the data enable signal TP and / or the falling edge of the clock signal CK can adjust the charging time.

[0052] In one of the embodiments, the embodiment provides a charging time determination system, which comprises a display device 100, an acquisition module 200, a detection module 300 and a processor 400, the display device 100 is used to display corresponding frame images according to received gray scales, each frame image comprises at least one test position; the acquisition module 200 is used to acquire luminance data corresponding to frame images under at least three gray scales, the luminance data comprises luminance of each test position; the detection module 300 is connected with the display device 100 and is used to capture corresponding scanning signals and data signals in the display device 100; the processor 400 is connected with the display device 100, the acquisition module 200 and the detection module 300 respectively and is used to determine corresponding charging times according to the corresponding scanning signals and the data signals, to obtain charging time luminance change curves of corresponding test positions according to luminance of each test position under at least three gray scales and the corresponding charging times, and to determine the charging time corresponding to the highest luminance in the charging time luminance change curves as the optimal charging time of the display device 100.

[0053] It can be understood that the charging time determination system provided by the embodiment can obtain the charging time luminance change curves of the corresponding test positions according to the luminance of the corresponding test positions under at least three gray scales and the corresponding charging times, then obtain the same number of charging time luminance change curves according to the number of test positions, and determine the charging time corresponding to the highest luminance in one or more charging time luminance change curves as the optimal charging time, which is a simple, efficient and accurate process of determining the optimal charging time.

[0054] Specifically, the acquisition module 200 can be one or more cameras of CA310 type. The detection module 300 can be an oscilloscope, which captures corresponding waveforms from the display device 100 and feeds back to the processor 400. The processor 400 can be a personal computer.

[0055] In one of the embodiments, the acquisition module 200 comprises a configuration unit, a first acquisition unit, a second acquisition unit and a third acquisition unit, the configuration unit is used to configure at least three gray scales including a low gray scale, a middle gray scale and a high gray scale; the first acquisition unit is used to acquire a heavy load picture corresponding to the low gray scale; the second acquisition unit is used to acquire a heavy load picture corresponding to the middle gray scale; and the third acquisition unit is used to acquire a heavy load picture corresponding to the high gray scale.

[0056] In one of the embodiments, the processor 400 comprises a determining unit, a first configuring unit, a second configuring unit, a third configuring unit and a fourth configuring unit. The determining unit is configured to determine the brightness and the corresponding charging time of at least three test positions in each frame image. The first configuring unit is configured to configure the area of each frame image to comprise a first area, a second area and a third area distributed in sequence. The second configuring unit is configured to configure the first of the at least three test positions to be located in the first area. The third configuring unit is configured to configure the second of the at least three test positions to be located in the second area. The fourth configuring unit is configured to configure the third of the at least three test positions to be located in the third area.

[0057] In one of the embodiments, the processor 400 outputs the corresponding gray scale and the charging time to the display device 100, and the display device 100 displays the corresponding frame image according to the received gray scale and charging time.

[0058] It should be noted that, in the present embodiment, the display device 100, the acquisition module 200, the detection module 300 and the processor 400 can form a closed-loop processing system. In the determination of the optimal charging time of the display device 100, no human intervention is required, which saves manpower and avoids errors caused by human intervention, and improves the efficiency of determining the charging time.

[0059] In one of the embodiments, the processor 400 writes the optimal charging time to the display device 100 in response to the determination of the optimal charging time, and stops the determination process of the optimal charging time of the display device 100.

[0060] It should be noted that, in the present embodiment, the processor 400 writes the optimal charging time to the display device 100 after obtaining the optimal charging time of the display device 100, and then the display device 100 will work according to the optimal charging time written subsequently. Thus, the optimal charging time of the display device 100 has been determined and written.

[0061] In one of the embodiments, the processor 400 controls the display device 100 to display at least three gray scale corresponding heavy load pictures, each gray scale corresponding to a heavy load picture.

[0062] It should be noted that, in the determination of the optimal charging time, the display device 100 displays the heavy load picture corresponding to the gray scale according to the gray scale output by the processor 400.

[0063] In one of the embodiments, the processor 400 obtains a corresponding charging time brightness change curve by fitting according to the brightness and the corresponding charging time of the same test position in at least three gray scale corresponding heavy load pictures.

[0064] In one of the embodiments, the processor 400 selects at least three test positions in the same overload picture to obtain a plurality of charging time luminance variation curves corresponding to the test positions; and determines the charging time corresponding to the highest luminance in the plurality of charging time luminance variation curves as the optimal charging time of the display device 100.

[0065] In summary, the workflow performed by the processor 400 is shown in Figure 6 As shown in the figure, the adjustment of the charging time of the current display device 100 is started, then the display device 100 inputs the data enable signal TP corresponding to the initial charging time, then collects the display luminance data from the camera, judges whether the collection is completed, i.e., whether at least one test position and three groups of luminance and charging time corresponding to each test position are determined, if not (NO), the charging time is changed, and the corresponding data enable signal TP is inputted again; if yes (YES), the corresponding luminance curve, i.e., the charging time luminance variation curve, is outputted, the luminance data is compared, i.e., the luminance in each charging time luminance variation curve is compared, then the highest luminance in each charging time luminance variation curve is obtained, the charging time corresponding to the highest luminance is determined as the optimal charging time, and the optimal charging time is written into the current display device 100, thus the adjustment of the current display device 100 is completed.

[0066] In one of the embodiments, as shown in Figure 5 , Figure 7 The display device 100 provided by the embodiment stores the optimal charging time in the at least one embodiment.

[0067] It can be understood that, since the display device 100 provided by the embodiment stores the optimal charging time, the display device 100 can provide better display luminance with a more reasonable charging time, which is not only beneficial to reducing the charging time, but also beneficial to improving the display luminance.

[0068] In addition, since the plurality of display devices 100 all store the optimal charging time, and the optimal charging time can improve the luminance and chroma of the display device 100, the optimal charging time can also improve the quality difference between different display devices 100, and improve the product quality.

[0069] In one of the embodiments, the display device 100 comprises a display panel 120, a gate driver 110, a source driver 130 and a timing controller 140, the display panel 120 is configured to display corresponding frame images; the gate driver 110 is connected with the display panel 120 and configured to provide corresponding scanning signals to the display panel 120; the source driver 130 is connected with the display panel 120 and configured to provide corresponding data signals to the display panel 120; the timing controller 140 is connected with the gate driver 110, the source driver and a processor 400, and configured to control the display panel 120 to display corresponding frame images according to received gray scale, and adjust the overlap time between the pulse of corresponding scanning signal and the pulse of data signal in a frame according to received charging time.

[0070] In one of the embodiments, the timing controller 140 modulates the data enable signal according to the charging time, and the source driver 130 modulates the data signal according to the data enable signal; wherein the frequency of the data enable signal is the same as the frequency of the data signal, and the phase of the data enable signal is different from the phase of the data signal.

[0071] In one of the embodiments, the gate driver 110 outputs corresponding scanning signals according to the accessed clock signal, the frequency of the clock signal is the same as the frequency of the scanning signal, and the phase of the clock signal is different from the phase of the scanning signal.

[0072] In one of the embodiments, the timing controller 140 controls the source driver 130 to adjust the phase of the data signal through the charging time, while the frequency and phase of the scanning signal and the frequency of the data signal remain unchanged.

[0073] In the above embodiments, the description of each embodiment has its own focus, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0074] The charging time determination method, charging time determination system and display device provided by the embodiments of the present application are described in detail above, and the principle and implementation manner of the present application are described by applying specific examples in the text; the above embodiment description is only used to help understand the technical solutions and core ideas of the present application; the person skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A charging time determination method characterized by, include: Acquire frame images corresponding to at least three gray levels, wherein the at least three gray levels include low gray level, medium gray level and high gray level, and the frame images include the reloaded image corresponding to the low gray level, the reloaded image corresponding to the medium gray level and the reloaded image corresponding to the high gray level. Determine the brightness and corresponding charging time at at least one test location in each frame of the image; Based on the brightness of each test location under the at least three gray levels and the corresponding charging time, the brightness change curve of the corresponding test location under the charging time is obtained; The charging time corresponding to the highest brightness in the brightness change curve over the charging time is determined as the optimal charging time.

2. The charge time determination method according to claim 1, characterized by, The step of determining the brightness and corresponding charging time of at least one test position in each frame of image includes: Determine the brightness and corresponding charging time at at least three test locations in each frame of the image; The region where each frame image is located includes a first region, a second region, and a third region distributed sequentially. The first of the at least three test locations is configured to be located in the first region; Configure the second of the at least three test locations to be located in the second region; The third of the at least three test locations is configured to be located in the third region.

3. The charge time determination method according to claim 1, characterized by, The step of determining the brightness and corresponding charging time of at least one test position in each frame of image includes: Acquire the scan signal and data signal received at each test location in one frame; The charging time is determined as the overlap time between the pulses of the scan signal and the pulses of the data signal in a frame.

4. The charge time determination method according to claim 3, characterized by, The step of determining the overlap time between the pulses of the scan signal and the pulses of the data signal in a frame as the charging time includes: Obtain the frequency and phase of the scanning signal; Obtain the frequency and phase of the data signal; While keeping the frequency of the scanning signal and the frequency of the data signal constant, the phase of the scanning signal and / or the frequency of the data signal are changed to adjust the charging time corresponding to the highest brightness in the charging time brightness change curve to the optimal charging time.

5. A charge time determination system characterized by, include: A display device is used to display a corresponding frame image based on the received grayscale, wherein each frame image includes at least one test position; The acquisition module is used to acquire brightness data corresponding to at least three grayscale frame images. The brightness data includes the brightness of each test position. The at least three grayscales include low grayscale, medium grayscale and high grayscale. The frame images include the reloaded image corresponding to the low grayscale, the reloaded image corresponding to the medium grayscale and the reloaded image corresponding to the high grayscale. A detection module, connected to the display device, is used to capture corresponding scanning signals and data signals from the display device; The processor is electrically connected to the display device, the acquisition module, and the detection module, respectively, and is used to determine the corresponding charging time based on the corresponding scanning signal and data signal, obtain the charging time-brightness change curve of the corresponding test position based on the brightness of each test position under the at least three gray levels and the corresponding charging time, and determine the charging time corresponding to the highest brightness in the charging time-brightness change curve as the optimal charging time of the display device.

6. The charging time determination system according to claim 5, characterized in that, The processor includes: The determination unit is used to determine the brightness and corresponding charging time of at least three test locations in each frame of image; The first configuration unit is used to configure the region where each frame image is located, including a first region, a second region, and a third region distributed sequentially. The second configuration unit is used to configure the first of the at least three test locations to be located in the first region; A third configuration unit is used to configure the second of the at least three test locations to be located in the second region; and The fourth configuration unit is used to configure the third of the at least three test positions to be located in the third region.

7. A display device, characterized in that, The display device stores the optimal charging time in the charging time determination system as described in any one of claims 5-6.

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