Methods and systems for establishing driver lookup tables, and displays

Abstract

This application discloses a method, system, and display for establishing an overdrive lookup table. The method includes: displaying a test image based on an initial grayscale value of a display panel; adjusting the display brightness of the test image based on a preset grayscale value of the display panel; obtaining the maximum or minimum brightness value of the test image within one frame to obtain the initial brightness value of the test image; calculating a target grayscale value corresponding to the initial brightness value based on a grayscale-brightness lookup table, where the grayscale-brightness lookup table includes a correspondence between grayscale values ​​and brightness values; and establishing a correspondence between the initial grayscale value, the target grayscale value, and the preset grayscale value based on the target grayscale value to form an overdrive lookup table. This method, system, and display for establishing an overdrive lookup table can improve the efficiency of overdrive debugging.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a method and system for establishing an overdrive lookup table and a display. BACKGROUND

[0002] At present, the driving mode of liquid crystal display includes overdrive. The so-called overdrive is that when the corresponding voltage of the target state of liquid crystal molecules is higher than the current voltage of the liquid crystal molecules, a voltage higher than the target state is applied to the liquid crystal molecules; when the corresponding voltage of the target state of liquid crystal molecules is lower than the current voltage of the liquid crystal molecules, a voltage lower than the target state is applied to the liquid crystal molecules. The voltage applied higher or lower than the target state is called overdrive voltage. Overdrive can accelerate the rotation of liquid crystal molecules, thereby shortening the gray scale response time of liquid crystal molecules. As for the specific value of the applied overdrive voltage, it is obtained by looking up the table. Specifically, an overdrive gray scale value corresponding to the overdrive voltage is obtained by looking up the overdrive table according to the gray scale value of the target state and the gray scale value of the current state.

[0003] In the prior art, overdrive debugging is mainly to obtain the gray scale response time (RT) curve of liquid crystal molecules by instrument measurement, and to confirm whether the RT curve is qualified by manually controlling the time sequence controller to input different overdrive gray scale values. Since the overdrive table usually has RGB*33*33 overdrive gray scale values, at least RGB*33*33 overdrive gray scale values need to be manually controlled for debugging, which is low in efficiency and requires a large number of manpower. SUMMARY

[0004] The embodiments of the present application provide a method and system for establishing an overdrive lookup table and a display, which can improve the efficiency of overdrive debugging.

[0005] In one aspect, the embodiments of the present application provide a method for establishing an overdrive lookup table, comprising: displaying a test picture according to an initial gray scale value of a display panel; adjusting the display brightness of the test picture according to a preset gray scale value of the display panel; obtaining an initial brightness value of the test picture within a frame of time; calculating a target gray scale value corresponding to the initial brightness value according to a gray scale-brightness lookup table, the gray scale-brightness lookup table comprising a corresponding relationship between gray scale values and brightness values; establishing a corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the target gray scale value to form an overdrive lookup table; wherein the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the preset gray scale value.

[0006] Optionally, in some embodiments of the present application, the step of establishing the gray scale-brightness lookup table comprises: driving the display panel to display pictures according to the plurality of bind point gray scale values respectively; obtaining the maximum brightness value corresponding to the display panel under each of the bind point gray scale values respectively; obtaining the standard brightness value corresponding to each of the bind point gray scale values according to the corresponding maximum brightness value; and establishing the corresponding relationship between the bind point gray scale values and the standard brightness values according to the standard brightness values to form the gray scale-brightness lookup table.

[0007] Optionally, in some embodiments of the present application, the step of obtaining the initial brightness value of the test picture within a frame of time comprises: if the initial gray scale value is greater than the preset gray scale value, obtaining the minimum brightness value of the test picture within a frame of time; and taking the minimum brightness value as the initial brightness value of the test picture.

[0008] Optionally, in some embodiments of the present application, the step of obtaining the initial brightness value of the test picture within a frame of time comprises: if the initial gray scale value is less than the preset gray scale value, obtaining the maximum brightness value of the test picture within a frame of time; and taking the maximum brightness value as the initial brightness value of the test picture.

[0009] Optionally, in some embodiments of the present application, the step of calculating the target gray scale value corresponding to the initial brightness value according to the gray scale-brightness lookup table, the gray scale-brightness lookup table comprising the corresponding relationship between the gray scale values and the brightness values comprises: calculating the brightness difference between the initial brightness value and the standard brightness value in the gray scale-brightness lookup table; judging whether the brightness difference is less than or equal to a preset threshold value; and if the brightness difference is less than or equal to the preset threshold value, obtaining the target gray scale value corresponding to the standard brightness value whose brightness difference with the initial brightness value is less than or equal to the preset threshold value.

[0010] Optionally, in some embodiments of the present application, the step of establishing the corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the target gray scale value to form the overdrive lookup table comprises: obtaining a plurality of target gray scale values corresponding to each of the initial gray scale values between the minimum gray scale value and the maximum gray scale value and each of the preset gray scale values between the minimum gray scale value and the maximum gray scale value; and establishing the corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the obtained plurality of target gray scale values to form the overdrive lookup table.

[0011] Optionally, in some embodiments of the present application, when the preset gray scale value is the maximum gray scale, if the initial brightness value is less than the standard brightness value corresponding to the target gray scale value in the brightness-gray scale lookup table, the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the maximum gray scale value.

[0012] Optionally, in some embodiments of the present application, the preset gray scale value is positively correlated with the refresh frequency of the display panel, and during testing, the preset gray scale value is set according to the initial gray scale value, the target gray scale value and the refresh frequency of the display panel.

[0013] The present application also provides a system for establishing an overdrive lookup table, comprising a driving module, an acquisition module, a calculation module and a storage module. The driving module is configured to display a test picture according to an initial gray scale value of a display panel, and adjust the display brightness of the test picture according to a preset gray scale value of the display panel. The driving module is also configured to adjust the driving voltage applied to a sub-pixel according to the preset gray scale value corresponding to the initial gray scale value and a target gray scale value. The acquisition module is configured to acquire an initial brightness value of the test picture within one frame. The calculation module is configured to calculate the target gray scale value corresponding to the initial brightness value according to a gray scale-brightness lookup table, wherein the gray scale-brightness lookup table comprises a corresponding relationship between gray scale values and brightness values. The storage module is configured to store the corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value in a table form to form an overdrive lookup table, wherein the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the preset gray scale value.

[0014] In another aspect, the present application provides a display which stores an overdrive lookup table formed by the method for establishing an overdrive lookup table as described above, and adjusts the driving voltage applied to a sub-pixel using the overdrive lookup table.

[0015] The overdrive lookup table establishment method, system, and display provided in this application display a test screen based on the initial grayscale value of the display panel, and adjust the display brightness of the test screen according to the preset grayscale value of the display panel. By obtaining the initial brightness value of the test screen within one frame, the target grayscale value corresponding to the initial brightness value is calculated according to the grayscale-brightness lookup table. Thus, the correspondence between the initial grayscale value, the target grayscale value, and the preset grayscale value is established based on the target grayscale value to form an overdrive lookup table. That is, the target grayscale value corresponding to the initial brightness value of the first frame of the display screen on the grayscale response curve is obtained, thereby obtaining the overdrive grayscale value (preset grayscale value) corresponding to the initial grayscale value and the target grayscale value. This avoids manual multiple adjustments to obtain the overdrive grayscale value corresponding to the initial grayscale value and the target grayscale value, thereby improving the efficiency of overdrive debugging and reducing the required manpower. Attached Figure Description

[0016] Figure 1 This is a flowchart of the method for establishing an overdrive lookup table provided in an embodiment of this application;

[0017] Figure 2 yes Figure 1 The provided method for establishing the overdrive lookup table includes a brightness change curve of the test screen.

[0018] Figure 3 yes Figure 1 One of the flowcharts for step S40;

[0019] Figure 4 yes Figure 1 The second flowchart of step S40;

[0020] Figure 5 yes Figure 1 Flowchart of step S50;

[0021] Figure 6 This is a schematic diagram of the structure of the overdrive lookup table creation system provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0023] The principle of over driving (OD) debugging is that when a pixel needs to switch from a current gray scale to a target gray scale, if the pixel is directly driven by the target gray scale, due to the slow speed of liquid crystal flipping, the pixel cannot reach the target gray scale within the target response time. An over driving gray scale larger than the target gray scale is used to drive the liquid crystal flipping, so that the pixel reaches the target gray scale within the target response time. In the prior art, the efficiency of OD debugging is low, and more manpower is required. Embodiments of the present application provide an OD debugging method, which can improve the efficiency of OD debugging and reduce the required manpower.

[0024] As shown in Figure 1 Embodiments of the present application provide a method for establishing an over driving lookup table, comprising:

[0025] S10, display a test picture according to an initial gray scale value of a display panel.

[0026] In embodiments of the present application, a test picture of the display panel is displayed according to the initial gray scale value of the display panel. For example, when the initial gray scale value is 0, the test picture of the display panel is a black picture.

[0027] Specifically, when the display data is 8 bits, the initial gray scale value can be any one of 0-255. For example, the initial gray scale value is 1, 2, 4, 6, 8, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, etc. Specifically, when the display data is greater than 8 bits, the initial gray scale value can also be other values, for example, 256.

[0028] S20, adjust the display brightness of the test picture according to a preset gray scale value of the display panel.

[0029] As shown in Figure 2 The initial gray scale value of the display panel is 0, and the preset gray scale value of the display panel is 128, Figure 2 The luminance change curve of the conversion from 0 gray scale to 128 gray scale is shown in the figure, wherein the abscissa is time (time), including four display frames: 1F, 2F, 3F and 4F. The ordinate is luminance (L). It can be obtained from the curve that the maximum display luminance reached in the first display frame (1F) is L1.

[0030] S30, obtain an initial luminance value of the test picture within a frame of time.

[0031] In embodiments of the present application, when the initial gray scale value is less than the preset gray scale value, the maximum luminance value of the test picture within a frame of time is obtained. The maximum luminance value is taken as the initial luminance value of the test picture. As shown in Figure 2As shown, the initial gray scale value is 0, and the preset gray scale value is 128, so the maximum luminance value (L1) of the test picture within one frame (1F) is the initial luminance value of the test picture.

[0032] Conversely, if the initial gray scale value is greater than the preset gray scale value, the minimum luminance value of the test picture within one frame is obtained. The minimum luminance value is taken as the initial luminance value of the test picture.

[0033] S40, calculating a target gray scale value corresponding to the initial luminance value according to a gray scale-luminance lookup table, the gray scale-luminance lookup table including a corresponding relationship between gray scale values and luminance values.

[0034] In the embodiments of the present application, the method for establishing the overdrive lookup table further includes establishing a gray scale-luminance lookup table.

[0035] Specifically, as shown in the following table, the gray scale-luminance lookup table includes a corresponding relationship between gray scale values and luminance values. Figure 3 As shown, the establishment step of the gray scale-luminance lookup table includes:

[0036] S41, driving the display panel to display a picture according to the plurality of bind point gray scale values respectively.

[0037] In the embodiments of the present application, when the display data is 8 bits and the bind point gray scale is set to 33, the bind point gray scale values can include 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, 152, 160, 168, 176, 184, 192, 200, 208, 216, 224, 232, 240, 248, 255.

[0038] S42, respectively obtaining a maximum luminance value corresponding to the display panel under each bind point gray scale value.

[0039] In the embodiments of the present application, a response time measuring instrument is used to measure the maximum luminance value corresponding to the display panel under the bind point gray scale values of 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, 152, 160, 168, 176, 184, 192, 200, 208, 216, 224, 232, 240, 248, 255 respectively.

[0040] Specifically, the response time measuring instrument includes an MSE series colorimeter, and preferably an MSE colorimeter with a 20 millimeter light spot size.

[0041] S43, obtaining a standard luminance value corresponding to each bind point gray scale value according to the corresponding maximum luminance value.

[0042] In the embodiments of the present application, the maximum luminance value of the display panel corresponding to each binding point gray scale value is multiplied by 0.9 to obtain the standard luminance value corresponding to the binding point gray scale value. For example, according to the binding point gray scale value of 8, the display panel is driven to display a test picture, and the maximum luminance value of the test picture is Max L8 , obtained by a measuring instrument. Max L8 * 0.9 to obtain the standard luminance value L8 when the binding point gray scale value is 8.

[0043] S44, establishing a corresponding relationship between the binding point gray scale value and the standard luminance value according to the standard luminance value to form a gray scale-luminance lookup table.

[0044] Specifically, the standard luminance value corresponding to each binding point gray scale value is shown in Table 1:

[0045] Grey scale Standard luminance value Grey scale Standard luminance value Grey scale Standard luminance value 0 L0 88 L88 176 L176 8 L8 96 L96 184 L184 16 L16 104 L104 192 L192 24 L24 112 L112 200 L200 32 L32 120 L120 208 L208 40 L40 128 L128 216 L216 48 L48 136 L136 224 L224 56 L56 144 L144 232 L232 64 L64 152 L152 240 L240 72 L72 160 L160 248 L248 80 L80 168 L168 255 L255

[0046] As shown in Figure 4 , step S40 includes the following sub-steps:

[0047] S401, calculating the luminance difference between the initial luminance value and the standard luminance value in the gray scale-luminance lookup table.

[0048] S402, determining whether the luminance difference is less than or equal to a preset threshold value.

[0049] In the embodiments of the present application, the preset threshold value is between 0 and 0.5. That is, the luminance difference is greater than or equal to 0 and less than or equal to 0.5.

[0050] S403, if the luminance difference is less than or equal to the preset threshold value, obtaining the target gray scale value corresponding to the standard luminance value whose luminance difference with the initial luminance value is less than the preset threshold value.

[0051] In the embodiments of the present application, if the luminance difference is greater than or equal to 0 and less than or equal to 0.5, the target gray scale value corresponding to the standard luminance value whose luminance difference with the initial luminance value is greater than or equal to 0 and less than or equal to 0.5 is obtained. For example, the initial luminance value of the first display frame is L1, the luminance difference between L1 and L8 in Table 1 is greater than or equal to 0 and less than or equal to 0.5, and the binding point gray scale value 8 corresponding to L8 is the target gray scale value.

[0052] S50, establishing a corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the target gray scale value to form an overdrive lookup table.

[0053] As shown in Figure 5 , step S50 includes the following sub-steps:

[0054] S501, obtaining a plurality of target gray scale values corresponding to each initial gray scale value between the minimum gray scale value and the maximum gray scale value and each preset gray scale value between the minimum gray scale value and the maximum gray scale value.

[0055] In the embodiment of the present application, when the display data is 8 bits, the minimum gray scale value is 0 and the maximum gray scale value is 255.

[0056] In the embodiment of the present application, when the binding point gray scale is set to 33, the initial gray scale values can include 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, 152, 160, 168, 176, 184, 192, 200, 208, 216, 224, 232, 240, 248, 255.

[0057] Correspondingly, the target gray scale values can also include 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, 152, 160, 168, 176, 184, 192, 200, 208, 216, 224, 232, 240, 248, 255.

[0058] In the embodiment of the present application, the target gray scale values corresponding to each initial gray scale value and each preset gray scale value are obtained respectively. For example, the target gray scale values corresponding to 8 gray scale values to 32 gray scale values / 48 gray scale values / 56 gray scale values are obtained respectively, or the target gray scale values corresponding to 128 gray scale values to 96 gray scale values / 88 gray scale values / 64 gray scale values are obtained respectively.

[0059] In the embodiment of the present application, the initial gray scale values between 0 gray scale value and 255 gray scale value also include 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15. Correspondingly, the preset gray scale values between 0 gray scale value and 255 gray scale value also include 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, etc.

[0060] For example, the target gray scale values corresponding to 1 gray scale value to 61 gray scale value are obtained by repeating the above steps. Or, the target gray scale values corresponding to any initial gray scale value and any preset gray scale value between 0 gray scale value and 255 gray scale value are quickly calculated by logically programming the above obtaining method, further improving the debugging efficiency.

[0061] S502, establishing a corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the obtained plurality of target gray scale values to form an overdrive query table.

[0062] In the embodiments of the present application, the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is a preset gray scale value.

[0063] Specifically, the initial gray scale value of the test picture is set according to the refresh frequency of the display panel, and the preset gray scale value is set according to the initial gray scale value (the preset gray scale value can be greater than the initial gray scale value, and the preset gray scale value can also be less than the initial gray scale value), the brightness of the display panel is adjusted according to the preset gray scale value, and the maximum brightness value or the minimum brightness value of the display panel in the first display frame picture of the brightness change is obtained, the maximum brightness value or the minimum brightness value is taken as the initial brightness value, the standard brightness value with the smallest brightness difference value between the initial brightness value is calculated by searching the brightness-gray scale lookup table according to the initial brightness value, and the corresponding target gray scale value is obtained according to the standard brightness value, so that when the display panel needs to obtain the standard brightness value corresponding to the target gray scale value, the display panel can reach the standard brightness value in one display frame picture according to the corresponding preset gray scale value, that is, the preset gray scale value is the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value.

[0064] In the embodiments of the present application, when the preset gray scale value is the maximum gray scale, if the initial brightness value is less than the standard brightness value corresponding to at least one target gray scale value in the brightness-gray scale lookup table, the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the maximum gray scale value. When the display data is 8bit, the minimum gray scale value is 0, and the maximum gray scale value is 255.

[0065] For example, when the preset gray scale value is 255 and the target gray scale value is 240, if the initial brightness value is less than the standard brightness value L corresponding to the target gray scale value 240 in the brightness-gray scale lookup table, the overdrive gray scale value corresponding to the initial gray scale value 0 and the target gray scale value 240 is the maximum gray scale value 255. Correspondingly, the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value between 240 gray scale value and 255 gray scale value (for example, 241, 242, 255) is 255. 240

[0066] In the embodiments of the present application, the value of the preset gray scale value is positively correlated with the refresh frequency of the display panel. During testing, the preset gray scale value is set according to the initial gray scale value, the target gray scale value and the refresh frequency of the display panel. That is, the higher the refresh frequency of the display panel, the higher the value of the preset gray scale value. In the case of determining the initial gray scale value and the target gray scale value, the preset gray scale value can be set according to the refresh frequency of the display panel.

[0067] ​The application provides a method for establishing an overdrive lookup table. A test picture is displayed according to an initial gray scale value of a display panel, and the display brightness of the test picture is adjusted according to a preset gray scale value of the display panel. The maximum brightness value or the minimum brightness value of the test picture within one frame is obtained to obtain an initial brightness value of the test picture. A target gray scale value corresponding to the initial brightness value is calculated according to a gray scale-brightness lookup table, so that a corresponding relationship among the initial gray scale value, the target gray scale value and the preset gray scale value is established to form the overdrive lookup table. That is, the target gray scale value corresponding to the initial brightness value of the first frame of the display picture on the gray scale response curve is obtained, so that the overdrive gray scale value (the preset gray scale value) corresponding to the initial gray scale value and the target gray scale value is obtained. The overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is obtained by artificial multiple debugging, the efficiency of overdrive debugging is improved, and the required manpower is reduced.

[0068] As shown in Figure 6 The application further provides an overdrive lookup table establishing system 100, which comprises a driving module 110, an obtaining module 120, a calculating module 130 and a storage module 140.

[0069] Specifically, the driving module 110 is configured to display a test picture according to an initial gray scale value of a display panel, and adjust the display brightness of the test picture according to a preset gray scale value of the display panel. The driving module 110 is further configured to adjust the driving voltage applied to a sub-pixel according to the preset gray scale value corresponding to the initial gray scale value and a target gray scale value.

[0070] The obtaining module 120 is configured to obtain the maximum brightness value or the minimum brightness value of the test picture within one frame to obtain an initial brightness value of the test picture.

[0071] The calculating module 130 is configured to calculate a target gray scale value corresponding to the initial brightness value according to a gray scale-brightness lookup table. The gray scale-brightness lookup table comprises a corresponding relationship between a gray scale value and a brightness value.

[0072] The storage module 140 is configured to store the corresponding relationship among the initial gray scale value, the target gray scale value and the preset gray scale value in the form of a table to form an overdrive lookup table.

[0073] The overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the preset gray scale value.

[0074] The system for establishing the overdrive lookup table provided by the application displays a test picture according to the initial gray scale value of the display panel, adjusts the display brightness of the test picture according to the preset gray scale value of the display panel, acquires the initial brightness value of the test picture by acquiring the maximum brightness value or the minimum brightness value of the test picture within a frame of time, calculates the target gray scale value corresponding to the initial brightness value according to the gray scale-brightness lookup table, establishes the corresponding relationship among the initial gray scale value, the target gray scale value and the preset gray scale value, forms the overdrive lookup table, acquires the target gray scale value corresponding to the initial brightness value of the first frame of display picture on the gray scale response curve, and thus obtains the overdrive gray scale value (the preset gray scale value) corresponding to the initial gray scale value and the target gray scale value, avoids manual multiple debugging to acquire the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value, improves the efficiency of overdrive debugging, and reduces the required manpower.

[0075] In another aspect, the application provides a display that stores the overdrive lookup table formed by the above method for establishing an overdrive lookup table and adjusts the driving voltage applied to the sub-pixel by using the overdrive lookup table.

[0076] The above has introduced in detail the method and system for establishing an overdrive lookup table, and the display provided by the embodiments of the application. The above description of the embodiments is only for helping to understand the core idea of the application, and the above description should not be understood as limiting the protection scope of the application.

Claims

1. A method of establishing an overdrive lookup table, characterized by, The method comprises the following steps: displaying a test picture according to an initial gray scale value of a display panel; adjusting display brightness of the test picture according to a preset gray scale value of the display panel; the preset gray scale value is positively correlated with a refresh frequency of the display panel; obtaining an initial brightness value of the test picture within a frame time; when the initial gray scale value is less than the preset gray scale value, the initial brightness value is a maximum brightness value of the test picture; when the initial gray scale value is greater than the preset gray scale value, the initial brightness value is a minimum brightness value of the test picture; calculating a target gray scale value corresponding to the initial brightness value according to a gray scale-brightness lookup table; the gray scale-brightness lookup table comprises a corresponding relationship between gray scale values and brightness values; establishing a corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the target gray scale value, so as to form an overdrive lookup table; wherein an overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the preset gray scale value.

2. The method of claim 1, wherein, The establishing step of the gray scale-brightness lookup table comprises the following steps: driving the display panel to display pictures respectively according to a plurality of binding point gray scale values; obtaining a maximum brightness value corresponding to the display panel respectively under each of the binding point gray scale values; obtaining a standard brightness value corresponding to each of the binding point gray scale values according to the corresponding maximum brightness value; establishing a corresponding relationship between the binding point gray scale values and the standard brightness values according to the standard brightness values, so as to form the gray scale-brightness lookup table.

3. The method of claim 1, wherein, The step of obtaining the initial brightness value of the test picture within the frame time comprises the following steps: if the initial gray scale value is greater than the preset gray scale value, obtaining a minimum brightness value of the test picture within the frame time; taking the minimum brightness value as the initial brightness value of the test picture.

4. The method of claim 1, wherein, The step of obtaining the initial brightness value of the test picture within the frame time comprises the following steps: if the initial gray scale value is less than the preset gray scale value, obtaining a maximum brightness value of the test picture within the frame time; taking the maximum brightness value as the initial brightness value of the test picture.

5. The method of establishing an overdrive lookup table of claim 1, wherein, The step of calculating the target gray scale value corresponding to the initial brightness value according to the gray scale-brightness lookup table, wherein the gray scale-brightness lookup table comprises a corresponding relationship between gray scale values and brightness values, comprises the following steps: calculating a brightness difference value between the initial brightness value and a standard brightness value in the gray scale-brightness lookup table; judging whether the brightness difference value is less than or equal to a preset threshold value; if the brightness difference value is less than or equal to the preset threshold value, obtaining the target gray scale value corresponding to the standard brightness value whose brightness difference value with the initial brightness value is less than or equal to the preset threshold value.

6. The method of establishing an overdrive lookup table of claim 1, wherein, The step of establishing a corresponding relationship between the initial gray scale value, the target gray scale value and the preset gray scale value according to the target gray scale value, so as to form an overdrive lookup table, comprises the following steps: obtaining a plurality of target gray scale values corresponding to each of the preset gray scale values between a minimum gray scale value and a maximum gray scale value, respectively, for each of the initial gray scale values between the minimum gray scale value and the maximum gray scale value. According to the obtained multiple target gray scale values, a correspondence relationship between the initial gray scale value, the target gray scale value and the preset gray scale value is established to form an overdrive lookup table.

7. The method of establishing an overdrive lookup table of claim 1, wherein, When the preset gray scale value is a maximum gray scale value, if the initial brightness value is less than a standard brightness value corresponding to at least one of the target gray scale values in the gray scale-brightness lookup table, the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the maximum gray scale value.

8. The method of establishing an overdrive lookup table of claim 1, wherein, During testing, the preset gray scale value is set according to the initial gray scale value, the target gray scale value and a refresh frequency of the display panel.

9. A system for establishing an overdrive lookup table, comprising: Comprise: a driving module, configured to display a test picture according to an initial gray scale value of a display panel, and adjust a display brightness of the test picture according to a preset gray scale value of the display panel, and further configured to adjust a driving voltage applied to a sub-pixel according to the preset gray scale value corresponding to the initial gray scale value and a target gray scale value; the preset gray scale value is positively correlated with a refresh frequency of the display panel; an obtaining module, configured to obtain an initial brightness value of the test picture within a time of one frame; when the initial gray scale value is less than the preset gray scale value, the initial brightness value is a maximum brightness value of the test picture; when the initial gray scale value is greater than the preset gray scale value, the initial brightness value is a minimum brightness value of the test picture; a calculating module, configured to calculate a target gray scale value corresponding to the initial brightness value according to a gray scale-brightness lookup table, the gray scale-brightness lookup table comprising a correspondence relationship between a gray scale value and a brightness value; a storage module, configured to store the correspondence relationship between the initial gray scale value, the target gray scale value and the preset gray scale value in a table form to form an overdrive lookup table; wherein, the overdrive gray scale value corresponding to the initial gray scale value and the target gray scale value is the preset gray scale value.

10. A display, characterized by The overdrive lookup table formed by the overdrive lookup table establishment method of any one of claims 1-8 is stored, and the overdrive lookup table is used to adjust the driving voltage applied to the sub-pixel.

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