Pre-charging method and apparatus for display image, and display apparatus

Abstract

The present application discloses a pre-charging method and apparatus for a display image, and a display apparatus. The pre-charging method for a display image comprises: determining a pre-charging region in a display image according to a driving voltage of each pixel in the display image; determining a target grayscale value of a target pixel in the pre-charging region; and adjusting an original grayscale value of the target pixel to the target grayscale value to obtain a pre-charged display image.

Description

Pre-charging method and device of display picture, and display device

[0001] This application claims priority to Chinese Patent Application No. 202411311077.0, filed on September 19, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, in particular to a pre-charging method and device of display picture, and a display device. BACKGROUND

[0003] With the rapid development of display technology, the specifications of display panels are continuously improving, and users' requirements for display quality are also becoming higher and higher. TECHNICAL PROBLEM

[0004] With the improvement of the specifications of display panels, when there is a large gray scale value jump in the pixels in the display picture, due to factors such as liquid crystal leakage, insufficient VDD driving, and capacitive coupling, the driving voltage at both ends of the liquid crystal will fluctuate, resulting in horizontal light and dark lines when the picture is displayed, which affects the display effect. TECHNICAL SOLUTION

[0005] In a first aspect, an embodiment of the present application provides a pre-charging method of a display picture, comprising:

[0006] determining a pre-charging area in the display picture according to the driving voltage of each pixel in the display picture; wherein each pre-charging area includes a plurality of pixels located in the same row, and the voltage difference between the driving voltage of the pixel in the pre-charging area and the driving voltage of the pixel in the previous row satisfies a preset condition;

[0007] determining a target gray scale value of a target pixel in the pre-charging area; wherein the target pixel refers to the pixel in the pre-charging area that needs to adjust the gray scale value; and

[0008] adjusting the original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display picture.

[0009] In a second aspect, an embodiment of the present application provides a pre-charging device of a display picture, comprising:

[0010] a first determining module configured to determine a pre-charging area in the display picture according to the driving voltage of each pixel in the display picture; wherein each pre-charging area includes a plurality of pixels located in the same row, and the voltage difference between the driving voltage of the pixel in the pre-charging area and the driving voltage of the pixel in the previous row satisfies a preset condition;

[0011] determining a target gray scale value of a target pixel in the pre-charging area; wherein the target pixel refers to the pixel in the pre-charging area that needs to adjust the gray scale value; and

[0012] adjusting an original gray scale value of the target pixel to the target gray scale value to obtain the display picture after pre-charging.

[0013] In a third aspect, an embodiment of the present application provides a display device, which comprises a display panel and a pre-charging device of a display picture; wherein the pre-charging device of the display picture comprises:

[0014] a first determining module configured to determine a pre-charging area in the display picture according to a driving voltage of each pixel in the display picture; wherein each pre-charging area comprises a plurality of pixels in the same row, and a voltage difference between the driving voltage of the pixel in the pre-charging area and the driving voltage of the pixel in the last row satisfies a preset condition;

[0015] a second determining module configured to determine a target gray scale value of a target pixel in the pre-charging area; wherein the target pixel refers to the pixel in the pre-charging area that needs to adjust the gray scale value; and

[0016] a pre-charging module configured to adjust an original gray scale value of the target pixel to the target gray scale value to obtain the display picture after pre-charging. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a schematic diagram of a pre-charging method of a display picture according to an embodiment of the present application;

[0018] FIG. 2 is a schematic diagram of a pre-charging area according to an embodiment of the present application;

[0019] FIG. 3 is a schematic diagram of a comparison between continuous pre-charging and discontinuous pre-charging according to an embodiment of the present application;

[0020] FIG. 4 is a schematic diagram of a numerical mapping of a pre-charging mode according to an embodiment of the present application;

[0021] FIG. 5 is a schematic diagram of a mode mapping table according to an embodiment of the present application;

[0022] FIG. 6 is a schematic diagram of a first coefficient mapping table according to an embodiment of the present application;

[0023] FIG. 7 is a schematic diagram of a correction coefficient according to an embodiment of the present application;

[0024] FIG. 8 is a schematic diagram of a second coefficient mapping table according to an embodiment of the present application;

[0025] FIG. 9 is a comparison diagram of a pre-charge mode according to an embodiment of the present application;

[0026] FIG. 10 is a diagram of a first voltage mapping table according to an embodiment of the present application;

[0027] FIG. 11 is a diagram of a second voltage mapping table according to an embodiment of the present application;

[0028] FIG. 12 is a block diagram of a pre-charge device of a display screen according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The described technical solutions are only used to explain and describe the ideas of the present application, and should not be regarded as limiting the protection scope of the present application.

[0030] In addition, "multiple" in the embodiments of the present application refers to two or more than two. "First" and "second" and the like in the embodiments of the present application are used to distinguish different technical features, and do not represent any order, quantity or importance.

[0031] The various embodiments provided by the present application are similar, and the features in different embodiments can be combined with each other.

[0032] The sequence of the following embodiments is not limited as the preferred sequence of the embodiments.

[0033] Please refer to FIG. 1, which is a flowchart of a pre-charge method of a display screen according to an embodiment of the present application. The pre-charge method can include the following steps:

[0034] Step 110: determining a pre-charge area in the display screen according to the driving voltage of each pixel in the display screen;

[0035] Step 120: determining a target gray scale value of a target pixel in the pre-charge area;

[0036] Step 130: adjusting the original gray scale value of the target pixel to the target gray scale value to obtain a pre-charged display screen.

[0037] The embodiments of the present application can obtain a display screen to be displayed and the driving voltage of each pixel in the display screen. Optionally, the driving voltage of the pixel can be directly obtained, or can be quantified according to other parameters of the pixel, and the embodiments of the present application do not limit this. For example, the gray scale value of each pixel in the display screen can be obtained first, and then the gray scale value of each pixel is converted into the driving voltage of the pixel.

[0038] Taking the quantification of the driving voltage of the pixel according to the gray scale value of the pixel as an example, optionally, the above step 110 further includes the following steps:

[0039] Step 011: obtaining a display picture and original gray scale values of each pixel in the display picture;

[0040] Step 012: determining a driving type of the display picture;

[0041] Step 013: if the driving type is positive frame driving, determining a driving voltage of each pixel according to the original gray scale value of each pixel and a preset first voltage mapping table;

[0042] Step 014: if the driving type is negative frame driving, determining a driving voltage of each pixel according to the original gray scale value of each pixel and a preset second voltage mapping table.

[0043] The positive frame driving drives the pixel with a positive polarity voltage, which is a driving voltage with a voltage value greater than a common voltage, so as to make the liquid crystal molecules arrange in a specific direction, thereby controlling the passing of light to form an image and achieving the purpose of picture display. The negative frame driving drives the pixel with a negative polarity voltage, which is a driving voltage with a voltage value less than the common voltage. The arrangement direction of the liquid crystal molecules in the negative frame driving is opposite to that in the positive frame driving, and the negative frame driving can also control the passing of light to form an image and achieve the purpose of picture display. In actual application, in order to reduce the polarization and residual image phenomenon of the liquid crystal molecules caused by long-time application of the same polarity voltage, the frame alternating driving mode is usually adopted, that is, the positive frame and the negative frame are driven alternately. This mode can effectively reduce the polarization of the liquid crystal molecules, prolong the service life of the display device, and improve the display quality.

[0044] Due to the slight difference in the speed of the ability rebound and the pressure drop amount between the positive frame driving and the negative frame driving, the embodiments of the present application pre-establish the voltage mapping tables corresponding to the two driving types, that is, the first voltage mapping table and the second voltage mapping table. The first voltage mapping table includes the mapping relationship between the original gray scale value and the driving voltage in the case of positive frame driving, as shown in FIG. 10; and the second voltage mapping table includes the mapping relationship between the original gray scale value and the driving voltage in the case of negative frame driving, as shown in FIG. 11. When obtaining the driving voltage of each pixel in the display picture, the driving type of the display picture is first determined, and then the corresponding voltage mapping table is obtained according to the driving type, so as to further determine the driving voltage corresponding to the original gray scale value of the pixel from the obtained voltage mapping table.

[0045] In step 110, the embodiment of the present application determines the pre-charge area in the display picture according to the driving voltage of each pixel in the display picture. Each pre-charge area includes a plurality of pixels in the same row, and the voltage difference between the driving voltage of the pixel in the pre-charge area and the driving voltage of the pixel in the previous row satisfies a preset condition. Alternatively, the pre-charge area can include all pixels in the same row of the display picture, or include part of the pixels in the same row of the display picture. Alternatively, the preset condition can be that the voltage difference between the driving voltage of each pixel in the pre-charge area and the driving voltage of the corresponding pixel in the previous row is greater than a first threshold, or the sum of the voltage differences between the driving voltage of all pixels in the pre-charge area and the driving voltage of the corresponding pixel in the previous row is greater than a second threshold. Each pixel and the corresponding pixel in the previous row of the pixel are in the same column of the display picture. For other descriptions of the determination method of the pre-charge area, please refer to the following embodiments, which will not be described here.

[0046] In step 120, the embodiment of the present application determines the target gray scale value of the target pixel in the pre-charge area. The target pixel refers to the pixel in the pre-charge area that needs to adjust the gray scale value. The pre-charge area includes one or more target pixels, and alternatively, all pixels in the pre-charge area are target pixels; or part of the pixels in the pre-charge area are target pixels. The embodiment of the present application can first determine the target pixel in the pre-charge area, and then determine the target gray scale value of each target pixel. The target gray scale value refers to the gray scale value of the target pixel after pre-charging, that is, the gray scale value that the target pixel needs to adjust to.

[0047] The embodiment of the present application does not limit the determination method of the target gray scale value of the target pixel. Alternatively, a gray scale value mapping table can be established in advance, which includes the mapping relationship between the original gray scale value and the target gray scale value, and the target gray scale value of the target pixel can be obtained from the gray scale value mapping table according to the original gray scale value of the target pixel; or the pre-charge coefficient of the target pixel can be determined, and the target gray scale value of the target pixel can be determined according to the original gray scale value of the target pixel and the pre-charge coefficient. For other descriptions of the determination method of the target pixel and the calculation method of the target gray scale value, please refer to the following embodiments, which will not be described here.

[0048] In step 130, the embodiment of the present application adjusts the original gray scale value of the target pixel to the target gray scale value to obtain the display picture after pre-charging, and then the display device can drive the display picture after pre-charging to display in the display panel.

[0049] In summary, the pre-charging method of the display picture provided by the embodiment of the present application determines the pre-charging area in the display picture according to the driving voltage of each pixel in the display picture; then determines the target pixel in the pre-charging area and the target gray scale value of the target pixel; and then adjusts the original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display picture. Since the voltage difference between the driving voltage of the pixel in the pre-charging area and the driving voltage of the pixel in the previous row satisfies the preset condition, the embodiment of the present application determines the pre-charging area and pre-charges the pixel in the pre-charging area, realizes the local pre-charging compensation processing of the display picture, can reduce the local driving load, occupies a smaller register, and reduces or eliminates the horizontal crosstalk problem caused by the insufficient driving of the working voltage (such as VDD) of the display device in real time, so as to avoid the occurrence of single or multiple abnormal dark lines in the display picture.

[0050] In addition, the embodiment of the present application determines the driving voltage of the pixel according to the gray scale value of the pixel from the preset voltage mapping table, converts the gray scale value of the pixel to the driving voltage through the preset voltage mapping table, so as to further quantify the crosstalk amount. The embodiment of the present application also presets different voltage mapping tables for positive frame driving and negative frame driving, so as to obtain the corresponding voltage mapping table according to the driving type of the display picture. Since the voltage mapping table matches the driving type of the display picture, a more accurate driving voltage can be obtained according to the voltage mapping table, and then the crosstalk amount can be accurately quantified.

[0051] Next, the determination method of the pre-charging area is introduced and described.

[0052] In one example, the step 110 includes the following sub-steps:

[0053] Step 111: determining the jump sub-area in the display picture according to the driving voltage of each pixel in the display picture;

[0054] Step 112: taking the jump sub-area and the same-row sub-area of the jump sub-area as the pre-charging area in the display picture.

[0055] Each jump sub-area includes a plurality of pixels located in the same row, and the voltage difference between the driving voltage of the pixel in the jump sub-area and the driving voltage of the pixel in the previous row satisfies the preset condition. The same-row sub-area is located in the same row as the jump sub-area, but the voltage difference between the driving voltage of the pixel in the same-row sub-area and the driving voltage of the pixel in the previous row does not satisfy the preset condition. That is, the pre-charging area in the embodiment of the present application includes the jump sub-area and the same-row sub-area located in the same row as the jump sub-area.

[0056] The embodiment of the present application can divide the display picture into multiple sub-regions first, and then determine whether each sub-region is a jump sub-region. If there is a jump sub-region in a row of the display picture, other sub-regions in the row are the same-row sub-regions of the jump sub-region, and together form a pre-charge region of the display picture.

[0057] Taking the judgment of the jump sub-region based on the source driving sub-region as an example, the step 111 optionally includes the following sub-steps:

[0058] Step 1111: Determine the total voltage jump amount of each source driving sub-region in the display picture according to the driving voltage of each pixel in the display picture.

[0059] Step 1112: If the total voltage jump amount of the source driving sub-region is greater than a preset threshold, the source driving sub-region is regarded as a jump sub-region.

[0060] In the embodiment of the present application, the display device can provide driving voltage for the pixels through a source driving integrated circuit (Source IC). The data channel number of the source driving integrated circuit refers to the number of channels on the source driving integrated circuit for transmitting data signals, and each channel can provide data for a certain number of pixels. Since the number of channels of a source driving integrated circuit is limited, usually a display device is driven by multiple source driving integrated circuits, for example, the number of source driving integrated circuits is various from 4 to 24. Optionally, the number of source driving integrated circuits is related to the horizontal resolution of the display device and the number of channels of a single source driving integrated circuit, for example, the number of source driving integrated circuits = horizontal resolution of the display device x 3 / number of channels of a single source driving integrated circuit.

[0061] Exemplarily, the resolution of the display device is 3840x2160, and the horizontal resolution is 3840, so a total of 11520 (3840x3) channels are used; if a single source driving integrated circuit can drive 960 channels, the display device needs to use 12 source driving integrated circuits for driving; wherein the data (i.e. channel) index value of the first source driving integrated circuit is 1-960, the data index value of the second source driving integrated circuit is 961-1920, and the data index value corresponding to the remaining source driving integrated circuits is similar.

[0062] The channel range driven by a single source driving integrated circuit is a source driving region, and the source driving region can include multiple rows of the display picture. In the embodiment of the present application, a row in the source driving region is referred to as a source driving sub-region. That is, each source driving sub-region includes multiple pixels in the same row, and each source driving sub-region is driven by a source driving integrated circuit.

[0063] For each source driving sub-region, the total voltage jump of the source driving sub-region is calculated, which refers to the sum of voltage differences between the driving voltage of the pixel in the source driving sub-region and the driving voltage of the pixel in the previous row.

[0064] Exemplarily, for the regular architecture, the calculation formula of the total voltage jump of each source driving sub-region is as follows:

[0065] Exemplarily, for the Flip architecture, the calculation formula of the total voltage jump of each source driving sub-region is as follows:

[0066] In the above two calculation formulas, is the t-th source driving sub-region of the i-th row in the display picture; P (i,j) is the driving voltage of the j-th pixel in the t-th source driving sub-region, P (i-1,j) is the driving voltage of the j-th pixel in the i-1-th row; a t1 is the 1st pixel in the t-th source driving sub-region, a tn is the last pixel in the t-th source driving sub-region.

[0067] The preset conditions that the pre-charge region needs to satisfy include that the total voltage jump of the source driving sub-region is greater than a preset threshold. That is, if the total voltage jump of the source driving sub-region is greater than the preset threshold, the source driving sub-region is taken as a jump sub-region. If there is a jump sub-region in a row of the display picture, other source driving sub-regions in the display picture are taken as the same-row sub-regions of the jump sub-region, and the jump sub-region and the same-row sub-regions thereof jointly constitute a pre-charge region.

[0068] For example, as shown in FIG. 2, the i+1-th row of the display picture includes a jump sub-region, and the total voltage jump of the jump sub-region is greater than the preset threshold. As shown in FIG. 2, although the total voltage jump of the other regions in the i+1-th row is not greater than the preset threshold, since there is a jump sub-region in the i+1-th row, the other regions in the i+1-th row except the jump sub-region are taken as the same-row sub-regions, and thus the pre-charge region includes the jump sub-region and the same-row sub-regions of the jump sub-region.

[0069] In summary, the pre-charging method of the display panel provided in the embodiments of the present application takes the source driving sub-region with a large total voltage jump amount as a jump sub-region, and takes the jump sub-region and the same-row sub-region of the jump sub-region as a pre-charging region. By pre-charging the pixels in the jump sub-region, the jump amount of the driving voltage can be reduced, and thus the working voltage drop caused by the surge of the driving voltage can be reduced. Since the working voltage drop usually lasts for a whole row, by pre-charging the pixels in the same-row sub-region of the jump sub-region, the influence of the drop can be reduced.

[0070] Next, the determination manner of the target pixel and the calculation manner of the target gray scale value are introduced and described.

[0071] In one example, the step 120 includes the following sub-steps:

[0072] Step 121: determining a panel partition in which the pre-charging region is located in the display panel;

[0073] Step 122: determining a pre-charging mode of each pre-charging sub-region according to the panel partition in which the pre-charging sub-region is located and a preset mode mapping table;

[0074] Step 123: for each pre-charging sub-region, determining a target gray scale value of a target pixel in the pre-charging sub-region according to the pre-charging mode of the pre-charging sub-region.

[0075] The display panel includes a plurality of panel partitions, and the division manner of the panel partitions is not limited in the embodiments of the present application. Optionally, the display panel of the display device includes AxB panel partitions, A is the number of horizontal panel partitions, B is the number of vertical panel partitions, and A and B can be the same positive integer or different positive integers.

[0076] One pre-charging region includes at least one pre-charging sub-region, and different pre-charging sub-regions are located in different panel partitions. As known from the above embodiments, the pre-charging region includes the jump sub-region or the jump sub-region and the same-row sub-region of the jump sub-region, so that the pre-charging sub-region in the pre-charging region can include only the jump sub-region or the jump sub-region and the same-row sub-region.

[0077] The embodiments of the present application are provided with a mode mapping table, in which a corresponding pre-charging mode is preset for each panel partition, that is, the mode mapping table includes the mapping relationship between the panel partitions and the pre-charging modes. According to the panel partition in which each pre-charging sub-region is located, the pre-charging mode of the pre-charging sub-region can be obtained from the mode mapping table.

[0078] The embodiments of the present application do not limit the specific type of the pre-charging mode. Optionally, the pre-charging mode includes continuous pre-charging or discontinuous pre-charging; or the pre-charging mode includes pre-charging the same-row sub-region or pre-charging only the jump sub-region. Taking the pre-charging sub-region including the jump sub-region and / or the same-row sub-region as an example, the pre-charging mode includes a first pre-charging mode, a second pre-charging mode, a third pre-charging mode or a fourth pre-charging mode; wherein,

[0079] In the first pre-charging mode, the pixels in the jump sub-region and the same-row sub-region are pre-charged, and the pixels in the pre-charging sub-region are continuously pre-charged.

[0080] In the second pre-charging mode, the pixels in the jump sub-region and the same-row sub-region are pre-charged, and the pixels in the pre-charging sub-region are discontinuously pre-charged.

[0081] In the third pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are continuously pre-charged.

[0082] In the fourth pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are discontinuously pre-charged.

[0083] The continuous pre-charging and the discontinuous pre-charging refer to the continuity of the pre-charged pixels in space. The continuous pre-charging means that each pixel in the corresponding sub-region is pre-charged, while the discontinuous pre-charging means that multiple groups of pixels in the corresponding sub-region are pre-charged, each group of pixels including C pixels, and the adjacent two groups of pixels are spaced by D pixels, and C and D can be positive integers with the same or different values. For example, as shown in FIG. 3, for the continuous pre-charging, each pixel in the corresponding sub-region is pre-charged; and for the discontinuous pre-charging, multiple groups of pixels in the corresponding sub-region are pre-charged, each group of pixels including 3 pixels, and the adjacent two groups of pixels are spaced by 3 pixels.

[0084] Exemplarily, as shown in FIG. 9, (a) of FIG. 9 is the gray scale value of the part of pixels in the display panel before pre-charging, (c) of FIG. 9 is the gray scale value of the part of pixels in the display panel after pre-charging by using the first pre-charging mode, (b) of FIG. 9 is the gray scale value of the part of pixels in the display panel after pre-charging by using the second pre-charging mode, (e) of FIG. 9 is the gray scale value of the part of pixels in the display panel after pre-charging by using the third pre-charging mode, and (d) of FIG. 9 is the gray scale value of the part of pixels in the display panel after pre-charging by using the fourth pre-charging mode.

[0085] To facilitate the reading of the display device for the pre-charge mode, different values can be used to represent different pre-charge modes in the embodiments of the present application. For example, as shown in FIG. 4, the first pre-charge mode is represented by the value 0, the second pre-charge mode is represented by the value 1, the third pre-charge mode is represented by the value 2, and the fourth pre-charge mode is represented by the value 3. Based on the mapping relationship between the pre-charge modes and the values shown in FIG. 4, the display device obtains the value corresponding to the panel partition according to the mode mapping table shown in FIG. 5 to determine the pre-charge mode of the panel partition. For example, as shown in FIG. 5, for the second horizontal and sixth vertical panel partition in the display panel, the value 3 is obtained, indicating that the pre-charge mode of the panel partition is the fourth pre-charge mode; for the fourth horizontal and third vertical panel partition in the display panel, the value 2 is obtained, indicating that the pre-charge mode of the panel partition is the third pre-charge mode.

[0086] In step 123, the target gray scale value of the target pixel in each pre-charge sub-region is determined according to the pre-charge mode in the pre-charge sub-region. Optionally, step 123 includes the following sub-steps:

[0087] Step 1231: For each pre-charge sub-region, the target pixel in the pre-charge sub-region is determined according to the pre-charge mode of the pre-charge sub-region.

[0088] Step 1232: The pre-charge coefficient of the target pixel is determined.

[0089] Step 1233: The target gray scale value of the target pixel is determined according to the original gray scale value of the target pixel and the pre-charge coefficient.

[0090] The pre-charge coefficient of the target pixel refers to the adjustment coefficient of the gray scale value of the target pixel. Optionally, the pre-charge coefficient can be determined according to the original gray scale value of the target pixel and / or the total voltage jump amount of the source driving sub-region where the target pixel is located. Optionally, step 1232 includes the following sub-steps:

[0091] Step 12321: The first pre-charge coefficient of the target pixel is determined according to the total voltage jump amount of the source driving sub-region where the target pixel is located and a preset first coefficient mapping table.

[0092] Step 12322: The second pre-charge coefficient of the target pixel is determined according to the original gray scale value of the target pixel and a preset second coefficient mapping table.

[0093] The first coefficient mapping table includes the mapping relationship between the total voltage jump amount and the first pre-charge coefficient; and the second coefficient mapping table includes the mapping relationship between the original gray scale value and the second pre-charge coefficient. Optionally, the greater the total voltage jump amount, the greater the first pre-charge coefficient corresponding to the total voltage jump amount; and the greater the original gray scale value, the greater the second pre-charge coefficient corresponding to the original gray scale value.

[0094] Optionally, all possible voltage jump amounts are included in the first coefficient mapping table, so that according to the voltage jump amount of the source driving sub-area where the target pixel is located, the first pre-charge coefficient of the target pixel can be directly obtained from the first coefficient mapping table; or, a plurality of voltage jump amount binding points are included in the first coefficient mapping table, so that according to the voltage jump amount of the source driving sub-area where the target pixel is located, the first pre-charge coefficient of the target pixel can be determined according to the first pre-charge coefficients corresponding to the two voltage jump amount binding points adjacent to the voltage jump amount, by first obtaining the two voltage jump amount binding points adjacent to the voltage jump amount from the first coefficient mapping table.

[0095] Exemplarily, the mapping relationship between a plurality of voltage jump amount binding points and the first pre-charge coefficient is included in the first coefficient mapping table, as shown in FIG. 6, the plurality of voltage jump amount binding points include 0, 80, 160, 240, 320, 400, 480, and 560; if the voltage jump amount of the source driving sub-area where the target pixel is located is not a binding point in the first coefficient mapping table, then the two voltage jump amount binding points adjacent to the voltage jump amount are obtained from the first coefficient mapping table; the first pre-charge coefficient of the target pixel can be obtained by linearly interpolating the first pre-charge coefficients corresponding to the two adjacent voltage jump amount binding points. For example, the calculation formula of the first pre-charge coefficient of the target pixel is as follows:

[0096] Wherein, WD is the first pre-charge coefficient of the target pixel; P H1 is the voltage jump amount binding point adjacent to the voltage jump amount corresponding to the target pixel in the first coefficient mapping table, and P H1 is greater than the voltage jump amount corresponding to the target pixel; P L1 is the voltage jump amount binding point adjacent to the voltage jump amount corresponding to the target pixel in the first coefficient mapping table, and P L1 is greater than the voltage jump amount corresponding to the target pixel; ΔV S is the voltage jump amount corresponding to the target pixel, and the voltage jump amount corresponding to the target pixel is the voltage jump amount of the source driving sub-area where the target pixel is located; WD H is the first pre-charge coefficient corresponding to the voltage jump amount binding point P H1 ; WD L is the first pre-charge coefficient corresponding to the voltage jump amount binding point P L1 ; b refers to the correction coefficient of the source driving sub-area where the target pixel is located, and the correction coefficients of different source driving sub-areas are not the same, for example, the source driving sub-area and the source driving integrated circuit corresponding to the source driving sub-area are related, and different source driving integrated circuits can correspond to the same or different correction coefficients, as shown in FIG. 7.

[0097] Similarly, optionally, all possible original gray scale values are included in the second coefficient mapping table, so that according to the original gray scale value of the target pixel, the second pre-charge coefficient of the target pixel can be directly obtained from the second coefficient mapping table; or, multiple original gray scale value binding points are included in the second coefficient mapping table, so that according to the original gray scale value of the target pixel, two original gray scale value binding points adjacent to the original gray scale value can be obtained from the second coefficient mapping table, and then the second pre-charge coefficient corresponding to the two original gray scale value binding points is determined to determine the second pre-charge coefficient of the target pixel.

[0098] Exemplarily, the mapping relationship between multiple original gray scale value binding points and the second pre-charge coefficient is included in the second coefficient mapping table, as shown in FIG. 8, the multiple original gray scale value binding points include 0, 128, 256, 384, 512, 640, 768, 896, and 1024; if the original gray scale value of the target pixel is not a binding point in the second coefficient mapping table, two original gray scale value binding points adjacent to the original gray scale value are obtained from the second coefficient mapping table; the second pre-charge coefficient of the target pixel can be obtained by linear interpolation on the second pre-charge coefficients corresponding to the two adjacent original gray scale value binding points. For example, the calculation formula of the second pre-charge coefficient of the target pixel is as follows:

[0099] Wherein, WG is the second pre-charge coefficient of the target pixel; P H2 is the gray scale value binding point adjacent to the original gray scale value of the target pixel in the second coefficient mapping table, and P H2 is greater than the original gray scale value of the target pixel; P L2 is the gray scale value binding point adjacent to the original gray scale value of the target pixel in the second coefficient mapping table, and P L2 is greater than the original gray scale value of the target pixel; Gray is the original gray scale value of the target pixel; WG H is the second pre-charge coefficient corresponding to the gray scale value binding point P H2 ; WG L is the second pre-charge coefficient corresponding to the gray scale value binding point P L2 .

[0100] In the above step 1233, according to the original gray scale value and the pre-charge coefficient of the target pixel, the target gray scale value of the target pixel can be determined. The specific calculation method of the target gray scale value is not limited in the embodiments of the present application, optionally, the product operation can be performed on the original gray scale value and the pre-charge coefficient to obtain the target gray scale value; or, the product operation is performed on the original gray scale value and the pre-charge coefficient to obtain a gray scale adjustment value, and then the sum operation or the difference operation is performed on the original gray scale value and the gray scale adjustment value to obtain the target gray scale value.

[0101] Optionally, the above step 1233 includes the following sub-steps:

[0102] Step 12331: determining a gray scale adjustment value of the target pixel according to the original gray scale value of the target pixel and the pre-charge coefficient;

[0103] Step 12332: if the target pixel is located in the jump sub-region in the pre-charge region, reducing the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel;

[0104] Step 12333: if the target pixel is located in the same row sub-region in the pre-charge region, increasing the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel.

[0105] As can be seen from the above embodiment, the pre-charge coefficient of the target pixel can include a first pre-charge coefficient and a second pre-charge coefficient, the first pre-charge coefficient corresponds to the total voltage jump amount, and the second pre-charge coefficient corresponds to the original gray scale value. If the pre-charge coefficient of the target pixel includes the first pre-charge coefficient and the second pre-charge coefficient, the gray scale adjustment value of the target pixel is calculated according to the original gray scale value of the target pixel and the first pre-charge coefficient and the second pre-charge coefficient, for example, the product operation of the three is obtained.

[0106] The embodiment of the present application improves the pre-charge accuracy. Different ways are used to calculate the target gray scale value according to different sub-regions where the target pixel is located. If the target pixel is located in the jump sub-region in the pre-charge region, since the jump sub-region is a sub-region with a large voltage jump amount, in order to reduce the working voltage (such as VDD) pressure drop caused by the surge of the load, the gray scale adjustment value is reduced on the basis of the original gray scale value of the target pixel to obtain the target gray scale value. If the target pixel is located in the same row sub-region in the pre-charge region, although the same row sub-region itself does not have the surge of the load, the jump sub-region corresponding to the same row sub-region has the surge of the load, and the working voltage (such as VDD) pressure drop usually lasts for a whole row, so the gray scale adjustment value is increased on the basis of the original gray scale value of the target pixel to obtain the target gray scale value.

[0107] Exemplarily, if the target pixel is located in the jump sub-region, the calculation formula of the target gray scale value of the target pixel is as follows:

[0108] Exemplarily, if the target pixel is located in the same row sub-region, the calculation formula of the target gray scale value of the target pixel is as follows:

[0109] In the above two calculation formulas, Gray 预充 is the target gray scale value of the target pixel; Gray 原始 is the original gray scale value of the target pixel; WD is the first pre-charge coefficient of the target pixel; WG is the second pre-charge coefficient of the target pixel; and d is the maximum gray scale value of the pixel.

[0110] In summary, the pre-charging method for displaying a picture provided in the embodiments of the present application pre-sets different pre-charging modes for different panel partitions of a display panel, determines a pre-charging mode of each pre-charging sub-region in a pre-charging region according to the panel partition corresponding to the pre-charging sub-region, and then pre-charges pixels in the pre-charging sub-region according to the pre-charging mode. Since the driving capabilities of different panel partitions in the display panel are different, by dividing the panel partitions and pre-setting corresponding pre-charging modes for each panel partition, the pre-charging mode can be matched with the driving capability of the panel partition, and the pre-charging effect of the display picture can be improved.

[0111] To better implement the pre-charging method for displaying a picture provided in the embodiments of the present application, the embodiments of the present application further provide a pre-charging device for displaying a picture, which includes program code that can be used to execute the pre-charging method for displaying a picture described above, where the meanings of the terms are the same as in the pre-charging method for displaying a picture described above, and the specific implementation details can be referred to the description in the method embodiments.

[0112] Please refer to FIG. 12, which is a schematic diagram of a pre-charging device for displaying a picture provided in the embodiments of the present application. The program code in the pre-charging device for displaying a picture can be located in the modules as shown in FIG. 12. At this time, the pre-charging device for displaying a picture 1000 can include:

[0113] A first determining module 1010 is configured to determine a pre-charging region in the display picture according to the driving voltage of each pixel in the display picture. Each pre-charging region includes a plurality of pixels located in the same row, and the voltage difference between the driving voltage of the pixel in the pre-charging region and the driving voltage of the pixel in the previous row satisfies a pre-set condition.

[0114] A second determining module 1020 is configured to determine a target gray scale value of a target pixel in the pre-charging region. The target pixel refers to the pixel in the pre-charging region whose gray scale value needs to be adjusted.

[0115] A pre-charging module 1030 is configured to adjust the original gray scale value of the target pixel to the target gray scale value to obtain the display picture after pre-charging.

[0116] Optionally, the first determining module 1010 is further configured to:

[0117] determine a jump sub-region in the display picture according to the driving voltage of each pixel in the display picture. Each jump sub-region includes a plurality of pixels located in the same row, and the voltage difference between the driving voltage of the pixel in the jump sub-region and the driving voltage of the pixel in the previous row satisfies the pre-set condition; and

[0118] The jump sub-region and a same-row sub-region of the jump sub-region are taken as the pre-charge region in the display picture, wherein the same-row sub-region is in the same row as the jump sub-region in the display picture, but a voltage difference between the driving voltage of the pixel in the same-row sub-region and the driving voltage of the pixel in the last row does not satisfy the preset condition.

[0119] Optionally, the first determining module 1010 is further configured to:

[0120] determine a total voltage jump amount of each source driving sub-region in the display picture according to the driving voltage of each pixel in the display picture, wherein each source driving sub-region includes a plurality of pixels in the same row, and each source driving sub-region is driven by one source driving integrated circuit; the total voltage jump amount refers to a sum of voltage differences between the driving voltage of the pixel in the source driving sub-region and the driving voltage of the pixel in the last row; and

[0121] if the total voltage jump amount of the source driving sub-region is greater than a preset threshold, the source driving sub-region is taken as the jump sub-region; wherein the preset condition includes that the total voltage jump amount is greater than the preset threshold.

[0122] Optionally, the pre-charge device of the display picture is further configured to:

[0123] obtain the display picture and an original gray scale value of each pixel in the display picture;

[0124] determine a driving type of the display picture;

[0125] if the driving type is positive frame driving, determine the driving voltage of each pixel according to the original gray scale value of each pixel and a preset first voltage mapping table; wherein the first voltage mapping table includes a mapping relationship between the original gray scale value and the driving voltage in the case of the positive frame driving; and

[0126] if the driving type is negative frame driving, determine the driving voltage of each pixel according to the original gray scale value of each pixel and a preset second voltage mapping table; wherein the second voltage mapping table includes a mapping relationship between the original gray scale value and the driving voltage in the case of the negative frame driving.

[0127] Optionally, the second determining module 1020 is further configured to:

[0128] determine a panel partition in which the pre-charging region is located in the display panel; wherein one of the pre-charging regions comprises at least one pre-charging sub-region, and different pre-charging sub-regions are located in different panel partitions;

[0129] determine a pre-charging mode of each of the pre-charging sub-regions according to the panel partition in which the pre-charging sub-region is located and a preset mode mapping table; wherein the mode mapping table comprises a mapping relationship between the panel partitions and the pre-charging modes; and

[0130] For each of the pre-charging sub-regions, determine the target gray scale value of the target pixel in the pre-charging sub-region according to the pre-charging mode of the pre-charging sub-region.

[0131] Optionally, the second determining module 1020 is further configured to:

[0132] For each of the pre-charging sub-regions, determine the target pixel in the pre-charging sub-region according to the pre-charging mode of the pre-charging sub-region;

[0133] determine a pre-charging coefficient of the target pixel; and

[0134] determine the target gray scale value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient.

[0135] Optionally, the second determining module 1020 is further configured to:

[0136] determine a first pre-charging coefficient of the target pixel according to a total voltage jump amount of a source driving sub-region in which the target pixel is located and a preset first coefficient mapping table; wherein the first coefficient mapping table comprises a mapping relationship between the total voltage jump amount and the first pre-charging coefficient; and

[0137] determine a second pre-charging coefficient of the target pixel according to the original gray scale value of the target pixel and a preset second coefficient mapping table; wherein the second coefficient mapping table comprises a mapping relationship between the original gray scale value and the second pre-charging coefficient.

[0138] Optionally, the second determining module 1020 is further configured to:

[0139] determine a gray scale adjustment value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient;

[0140] if the target pixel is located in a jump sub-region in the pre-charging region, reduce the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel; and

[0141] If the target pixel is located in the same row sub-region in the pre-charging region, the gray scale adjustment value is added to the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel.

[0142] Optionally, the pre-charging sub-region includes a jump sub-region and / or a same row sub-region, and the pre-charging mode includes a first pre-charging mode, a second pre-charging mode, a third pre-charging mode or a fourth pre-charging mode; wherein,

[0143] In the first pre-charging mode, the pixels in the jump sub-region and the same row sub-region are pre-charged, and the pixels in the pre-charging sub-region are continuously pre-charged.

[0144] In the second pre-charging mode, the pixels in the jump sub-region and the same row sub-region are pre-charged, and the pixels in the pre-charging sub-region are discontinuously pre-charged.

[0145] In the third pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are continuously pre-charged; and

[0146] In the fourth pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are discontinuously pre-charged.

[0147] In summary, the pre-charging device of the display screen provided by the embodiments of the present application determines the pre-charging region in the display screen according to the driving voltage of each pixel in the display screen, determines the target pixel in the pre-charging region and the target gray scale value of the target pixel, then adjusts the original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display screen. Since the voltage difference between the driving voltage of the pixel in the pre-charging region and the driving voltage of the pixel in the previous row satisfies the preset condition, the embodiments of the present application determine the pre-charging region and pre-charge the pixels in the pre-charging region, realize the local pre-charging compensation processing of the display screen, can reduce the local driving load, occupy a smaller register, and reduce or eliminate the horizontal crosstalk problem caused by insufficient driving voltage (such as VDD) of the display device in real time, so as to avoid the occurrence of single or multiple abnormal dark lines in the display screen.

[0148] It should be understood that in actual implementation, each of the above modules can be implemented as an independent entity, or can be combined as the same or several entities.

[0149] Those skilled in the art can understand that the above program code can be stored in a computer readable storage medium and loaded and executed by a processor.

[0150] To this end, an embodiment of the present application provides a computer readable storage medium, which stores program codes capable of being loaded by a processor to execute steps in any one of the pre-charging methods of a display picture provided by the embodiments of the present application. For example, the program codes can execute the following steps:

[0151] determining a pre-charging area in the display picture according to the driving voltage of each pixel in the display picture; wherein each pre-charging area includes a plurality of pixels in the same row, and the voltage difference between the driving voltage of the pixels in the pre-charging area and the driving voltage of the pixels in the previous row meets a preset condition;

[0152] determining a target gray scale value of a target pixel in the pre-charging area; wherein the target pixel refers to the pixel in the pre-charging area that needs to adjust the gray scale value; and

[0153] adjusting the original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display picture.

[0154] Optionally, the determining the pre-charging area in the display picture according to the driving voltage of each pixel in the display picture comprises:

[0155] determining a jump sub-area in the display picture according to the driving voltage of each pixel in the display picture; wherein each jump sub-area includes a plurality of pixels in the same row, and the voltage difference between the driving voltage of the pixels in the jump sub-area and the driving voltage of the pixels in the previous row meets the preset condition; and

[0156] taking the jump sub-area and a same-row sub-area of the jump sub-area as the pre-charging area in the display picture; wherein the same-row sub-area and the jump sub-area are in the same row of the display picture, but the voltage difference between the driving voltage of the pixels in the same-row sub-area and the driving voltage of the pixels in the previous row does not meet the preset condition.

[0157] Optionally, the determining the jump sub-area in the display picture according to the driving voltage of each pixel in the display picture comprises:

[0158] determining the total voltage jump amount of each source driving sub-area in the display picture according to the driving voltage of each pixel in the display picture; wherein each source driving sub-area includes a plurality of pixels in the same row, and each source driving sub-area is driven by one source driving integrated circuit; the total voltage jump amount refers to the sum of the voltage difference between the driving voltage of the pixels in the source driving sub-area and the driving voltage of the pixels in the previous row; and

[0159] If the total voltage jump amount of the source driving sub-region is greater than a preset threshold, the source driving sub-region is regarded as the jump sub-region; wherein the preset condition includes that the total voltage jump amount is greater than the preset threshold.

[0160] Optionally, before the determining the pre-charge region in the display picture according to the driving voltage of each pixel in the display picture, the method further includes:

[0161] obtaining the display picture and an original gray scale value of each pixel in the display picture;

[0162] determining a driving type of the display picture;

[0163] If the driving type is positive frame driving, the driving voltage of each pixel is determined according to the original gray scale value of each pixel and a preset first voltage mapping table; wherein the first voltage mapping table includes a mapping relationship between the original gray scale value and the driving voltage in the case of the positive frame driving; and

[0164] If the driving type is negative frame driving, the driving voltage of each pixel is determined according to the original gray scale value of each pixel and a preset second voltage mapping table; wherein the second voltage mapping table includes a mapping relationship between the original gray scale value and the driving voltage in the case of the negative frame driving.

[0165] Optionally, the determining the target gray scale value of the target pixel in the pre-charge region includes:

[0166] determining a panel partition in which the pre-charge region is located in a display panel; wherein one pre-charge region includes at least one pre-charge sub-region, and different pre-charge sub-regions are located in different panel partitions;

[0167] determining a pre-charge mode of each pre-charge sub-region according to the panel partition in which each pre-charge sub-region is located and a preset mode mapping table; wherein the mode mapping table includes a mapping relationship between the panel partition and the pre-charge mode; and

[0168] for each pre-charge sub-region, determining the target gray scale value of the target pixel in the pre-charge sub-region according to the pre-charge mode of the pre-charge sub-region.

[0169] Optionally, the determining the target gray scale value of the target pixel in the pre-charge sub-region according to the pre-charge mode of the pre-charge sub-region for each pre-charge sub-region includes:

[0170] For each of the pre-charging sub-regions, a target pixel in the pre-charging sub-region is determined according to the pre-charging mode of the pre-charging sub-region;

[0171] A pre-charging coefficient of the target pixel is determined; and

[0172] The target gray scale value of the target pixel is determined according to the original gray scale value of the target pixel and the pre-charging coefficient.

[0173] Optionally, the determination of the pre-charging coefficient of the target pixel comprises:

[0174] A first pre-charging coefficient of the target pixel is determined according to a total voltage jump amount of a source driving sub-region where the target pixel is located and a preset first coefficient mapping table; wherein the first coefficient mapping table comprises a mapping relationship between the total voltage jump amount and the first pre-charging coefficient; and

[0175] A second pre-charging coefficient of the target pixel is determined according to the original gray scale value of the target pixel and a preset second coefficient mapping table; wherein the second coefficient mapping table comprises a mapping relationship between the original gray scale value and the second pre-charging coefficient.

[0176] Optionally, the determination of the target gray scale value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient comprises:

[0177] A gray scale adjustment value of the target pixel is determined according to the original gray scale value of the target pixel and the pre-charging coefficient;

[0178] If the target pixel is located in a jump sub-region in the pre-charging region, the gray scale adjustment value is reduced on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel; and

[0179] If the target pixel is located in a same row sub-region in the pre-charging region, the gray scale adjustment value is increased on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel.

[0180] Optionally, the pre-charging sub-region comprises a jump sub-region and / or a same row sub-region, and the pre-charging mode comprises a first pre-charging mode, a second pre-charging mode, a third pre-charging mode or a fourth pre-charging mode; wherein,

[0181] In the first pre-charging mode, the pixels in the jump sub-region and the same row sub-region are pre-charged, and the pixels in the pre-charging sub-region are continuously pre-charged;

[0182] in the second pre-charging mode, the pixels in the jump sub-region and the same row sub-region are pre-charged, and the pixels in the pre-charging sub-region are discontinuously pre-charged;

[0183] in the third pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are continuously pre-charged; and

[0184] in the fourth pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are discontinuously pre-charged.

[0185] The computer readable storage medium can include a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0186] Due to the program code stored in the computer readable storage medium, the steps of any one of the pre-charging methods of display picture provided by the embodiments of the present application can be executed, thus the beneficial effects of any one of the pre-charging methods of display picture provided by the embodiments of the present application can be achieved, which are described in detail in the foregoing embodiments and will not be described here.

[0187] The embodiments of the present application also provide a display device, which includes a display panel and the pre-charging device of display picture described in the foregoing embodiments. The pre-charging device of display picture can include:

[0188] a first determining module configured to determine pre-charging regions in the display picture according to driving voltages of each pixel in the display picture; each pre-charging region includes a plurality of pixels in the same row, and a voltage difference between the driving voltage of the pixel in the pre-charging region and the driving voltage of the pixel in the previous row satisfies a preset condition;

[0189] a second determining module configured to determine a target gray scale value of a target pixel in the pre-charging region; the target pixel refers to the pixel in the pre-charging region which needs to adjust the gray scale value; and

[0190] a pre-charging module configured to adjust an original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display picture.

[0191] Optionally, the first determining module is further configured to:

[0192] determine a jump sub-region in the display picture according to the driving voltage of each pixel in the display picture, wherein each jump sub-region includes a plurality of pixels in the same row, and a voltage difference between the driving voltage of the pixel in the jump sub-region and the driving voltage of the pixel in the previous row meets the preset condition; and

[0193] take the jump sub-region and a same-row sub-region of the jump sub-region as the pre-charge region in the display picture, wherein the same-row sub-region is in the same row as the jump sub-region in the display picture, but a voltage difference between the driving voltage of the pixel in the same-row sub-region and the driving voltage of the pixel in the previous row does not meet the preset condition.

[0194] Optionally, the first determining module is further configured to:

[0195] determine a total voltage jump amount of each source driving sub-region in the display picture according to the driving voltage of each pixel in the display picture, wherein each source driving sub-region includes a plurality of pixels in the same row, and each source driving sub-region is driven by one source driving integrated circuit; the total voltage jump amount refers to a sum of voltage differences between the driving voltage of the pixel in the source driving sub-region and the driving voltage of the pixel in the previous row; and

[0196] if the total voltage jump amount of the source driving sub-region is greater than a preset threshold, take the source driving sub-region as the jump sub-region; wherein the preset condition includes that the total voltage jump amount is greater than the preset threshold.

[0197] Optionally, the pre-charge device of the display picture is further configured to:

[0198] obtain the display picture and an original gray scale value of each pixel in the display picture;

[0199] determine a driving type of the display picture;

[0200] if the driving type is positive frame driving, determine the driving voltage of each pixel according to the original gray scale value of each pixel and a preset first voltage mapping table; wherein the first voltage mapping table includes a mapping relationship between the original gray scale value and the driving voltage in the case of the positive frame driving; and

[0201] if the driving type is negative frame driving, determine the driving voltage of each pixel according to the original gray scale value of each pixel and a preset second voltage mapping table; wherein the second voltage mapping table includes a mapping relationship between the original gray scale value and the driving voltage in the case of the negative frame driving.

[0202] Optionally, the second determining module is further configured to:

[0203] determine a panel partition in which the pre-charging area is located in the display panel; wherein one pre-charging area comprises at least one pre-charging sub-area, and different pre-charging sub-areas are located in different panel partitions;

[0204] determine a pre-charging mode of each pre-charging sub-area according to the panel partition in which the pre-charging sub-area is located and a preset mode mapping table; wherein the mode mapping table comprises a mapping relationship between the panel partition and the pre-charging mode; and

[0205] for each pre-charging sub-area, determine the target gray scale value of the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area.

[0206] Optionally, the second determining module is further configured to:

[0207] for each pre-charging sub-area, determine the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area;

[0208] determine a pre-charging coefficient of the target pixel; and

[0209] determine the target gray scale value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient.

[0210] Optionally, the second determining module is further configured to:

[0211] determine a first pre-charging coefficient of the target pixel according to a total voltage jump amount of a source driving sub-area in which the target pixel is located and a preset first coefficient mapping table; wherein the first coefficient mapping table comprises a mapping relationship between the total voltage jump amount and the first pre-charging coefficient; and

[0212] determine a second pre-charging coefficient of the target pixel according to the original gray scale value of the target pixel and a preset second coefficient mapping table; wherein the second coefficient mapping table comprises a mapping relationship between the original gray scale value and the second pre-charging coefficient.

[0213] Optionally, the second determining module is further configured to:

[0214] determine a gray scale adjustment value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient;

[0215] If the target pixel is located in a jump sub-region in the pre-charging region, the gray scale adjustment value is reduced on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel; and

[0216] If the target pixel is located in a same-line sub-region in the pre-charging region, the gray scale adjustment value is increased on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel.

[0217] Optionally, the pre-charging sub-region includes a jump sub-region and / or a same-line sub-region, and the pre-charging mode includes a first pre-charging mode, a second pre-charging mode, a third pre-charging mode or a fourth pre-charging mode; wherein,

[0218] In the first pre-charging mode, the pixels in the jump sub-region and the same-line sub-region are pre-charged, and the pixels in the pre-charging sub-region are continuously pre-charged;

[0219] In the second pre-charging mode, the pixels in the jump sub-region and the same-line sub-region are pre-charged, and the pixels in the pre-charging sub-region are discontinuously pre-charged;

[0220] In the third pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are continuously pre-charged; and

[0221] In the fourth pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are discontinuously pre-charged.

[0222] The specific implementation of each operation and the corresponding beneficial effects can be referred to the detailed description of the display screen pre-charging method embodiment above, which will not be repeated here.

[0223] The display screen pre-charging method and device, and the 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; the above embodiment descriptions are only used to help understand the method and the core idea thereof; meanwhile, for those skilled in the art, the specific implementation manner and application range can be changed according to the idea of the present application; and the above description should not be understood as a limitation of the present application.

Claims

1. A pre-charging method of a display picture, the method comprising: determining a pre-charging area in the display picture according to a driving voltage of each pixel in the display picture, wherein each pre-charging area comprises a plurality of pixels in a same row, and a voltage difference between the driving voltage of the pixels in the pre-charging area and the driving voltage of the pixels in a previous row satisfies a preset condition; determining a target gray scale value of a target pixel in the pre-charging area, wherein the target pixel refers to a pixel in the pre-charging area that needs to adjust a gray scale value; and adjusting an original gray scale value of the target pixel to the target gray scale value to obtain the display picture after pre-charging. The determining a pre-charging area in the display picture according to a driving voltage of each pixel in the display picture comprises: determining a jump sub-area in the display picture according to the driving voltage of each pixel in the display picture, wherein each jump sub-area comprises a plurality of pixels in a same row, and a voltage difference between the driving voltage of the pixels in the jump sub-area and the driving voltage of the pixels in a previous row satisfies the preset condition; and taking the jump sub-area and a same-row sub-area of the jump sub-area as the pre-charging area in the display picture, wherein the same-row sub-area is in the same row as the jump sub-area in the display picture, but a voltage difference between the driving voltage of the pixels in the same-row sub-area and the driving voltage of the pixels in a previous row does not satisfy the preset condition. The determining a jump sub-area in the display picture according to the driving voltage of each pixel in the display picture comprises: determining a voltage jump total amount of each source driving sub-area in the display picture according to the driving voltage of each pixel in the display picture, wherein each source driving sub-area comprises a plurality of pixels in a same row, and each source driving sub-area is driven by one source driving integrated circuit; the voltage jump total amount refers to a sum of voltage differences between the driving voltage of the pixels in the source driving sub-area and the driving voltage of the pixels in a previous row; and taking the source driving sub-area as the jump sub-area if the voltage jump total amount of the source driving sub-area is greater than a preset threshold, wherein the preset condition comprises that the voltage jump total amount is greater than the preset threshold. The method further comprises, before the determining a pre-charging area in the display picture according to a driving voltage of each pixel in the display picture: obtaining the display picture and an original gray scale value of each pixel in the display picture; determining a driving type of the display picture; determining the driving voltage of each pixel according to the original gray scale value of each pixel and a preset first voltage mapping table if the driving type is a positive frame driving, wherein the first voltage mapping table comprises a mapping relationship between the original gray scale value and the driving voltage in the case of the positive frame driving; and determining the driving voltage of each pixel according to the original gray scale value of each pixel and a preset second voltage mapping table if the driving type is a negative frame driving, wherein the second voltage mapping table comprises a mapping relationship between the original gray scale value and the driving voltage in the case of the negative frame driving.

2. The pre-charging method of a display panel according to claim 1, wherein, ​ ​ ​ 3. The method of pre-charging a display panel according to claim 2, wherein, ​ ​ ​ 4. The pre-charging method of a display panel according to claim 1, wherein, ​ ​ ​ ​ If the driving type is the negative frame driving, the driving voltage of each pixel is determined according to the original gray scale value of each pixel and a preset second voltage mapping table; the second voltage mapping table comprises a mapping relationship between the original gray scale value and the driving voltage in the case of the negative frame driving.

5. The method of pre-charging a display panel of claim 1, wherein, The method further comprises: determining a panel partition in which the pre-charging area is located in the display panel; one pre-charging area comprises at least one pre-charging sub-area, and different pre-charging sub-areas are located in different panel partitions; determining a pre-charging mode of each pre-charging sub-area according to the panel partition in which each pre-charging sub-area is located and a preset mode mapping table; the mode mapping table comprises a mapping relationship between the panel partition and the pre-charging mode; and for each pre-charging sub-area, determining the target gray scale value of the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area.

6. The method of pre-charging a display panel according to claim 5, wherein, The method further comprises: for each pre-charging sub-area, determining the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area; determining a pre-charging coefficient of the target pixel; and determining the target gray scale value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient.

7. The method of pre-charging a display panel according to claim 6, wherein, The method further comprises: determining a first pre-charging coefficient of the target pixel according to a total voltage jump amount of a source driving sub-area in which the target pixel is located and a preset first coefficient mapping table; the first coefficient mapping table comprises a mapping relationship between the total voltage jump amount and the first pre-charging coefficient; and determining a second pre-charging coefficient of the target pixel according to the original gray scale value of the target pixel and a preset second coefficient mapping table; the second coefficient mapping table comprises a mapping relationship between the original gray scale value and the second pre-charging coefficient.

8. The method of pre-charging a display panel according to claim 6, wherein, The method further comprises: determining a gray scale adjustment value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient; if the target pixel is located in a jump sub-area in the pre-charging area, reducing the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel; and if the target pixel is located in a same-row sub-area in the pre-charging area, increasing the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel.

9. A pre-charging method of a display panel according to any one of claims 5 to 8, wherein, The pre-charging sub-area comprises a jump sub-area and / or a same-row sub-area, and the pre-charging mode comprises a first pre-charging mode, a second pre-charging mode, a third pre-charging mode or a fourth pre-charging mode; wherein, in the first pre-charging mode, the pixels in the jump sub-region and the same-line sub-region are pre-charged, and the pixels in the pre-charging sub-region are continuously pre-charged; in the second pre-charging mode, the pixels in the jump sub-region and the same-line sub-region are pre-charged, and the pixels in the pre-charging sub-region are discontinuously pre-charged; in the third pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are continuously pre-charged; and in the fourth pre-charging mode, only the pixels in the jump sub-region are pre-charged, and the pixels in the jump sub-region are discontinuously pre-charged.

10. A pre-charging device of a display picture, the device comprising: a first determining module configured to determine pre-charging regions in the display picture according to driving voltages of each pixel in the display picture; wherein each of the pre-charging regions comprises a plurality of the pixels in the same line, and a voltage difference between the driving voltage of the pixel in the pre-charging region and the driving voltage of the pixel in the previous line satisfies a preset condition; a second determining module configured to determine a target gray scale value of a target pixel in the pre-charging region; wherein the target pixel refers to the pixel in the pre-charging region which needs to adjust the gray scale value; and a pre-charging module configured to adjust an original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display picture.

11. The pre-charging device for display panels according to claim 10, wherein, The first determining module is further configured to: determine jump sub-regions in the display picture according to the driving voltage of each of the pixels in the display picture; wherein each of the jump sub-regions comprises a plurality of the pixels in the same line, and a voltage difference between the driving voltage of the pixel in the jump sub-region and the driving voltage of the pixel in the previous line satisfies the preset condition; and regard the jump sub-region and a same-line sub-region of the jump sub-region as the pre-charging region in the display picture; wherein the same-line sub-region is in the same line as the jump sub-region in the display picture, but a voltage difference between the driving voltage of the pixel in the same-line sub-region and the driving voltage of the pixel in the previous line does not satisfy the preset condition.

12. The pre-charging device for display panels according to claim 11, wherein, The first determining module is further configured to: determine a total voltage jump amount of each source driving sub-region in the display picture according to the driving voltage of each of the pixels in the display picture; wherein each of the source driving sub-regions comprises a plurality of the pixels in the same line, and each of the source driving sub-regions is driven by one source driving integrated circuit; the total voltage jump amount refers to a sum of voltage differences between the driving voltage of the pixel in the source driving sub-region and the driving voltage of the pixel in the previous line; and if the total voltage jump amount of the source driving sub-region is greater than a preset threshold, regard the source driving sub-region as the jump sub-region; wherein the preset condition comprises that the total voltage jump amount is greater than the preset threshold.

13. The pre-charging device for display panels according to claim 10, wherein, The pre-charging device of the display picture is further configured to: acquire the display picture and original gray scale values of each pixel in the display picture; determine a driving type of the display picture; if the driving type is positive frame driving, determine the driving voltage of each pixel according to the original gray scale value of each pixel and a preset first voltage mapping table; wherein the first voltage mapping table comprises a mapping relationship between the original gray scale value and the driving voltage in the case of the positive frame driving; and if the driving type is negative frame driving, determine the driving voltage of each pixel according to the original gray scale value of each pixel and a preset second voltage mapping table; wherein the second voltage mapping table comprises a mapping relationship between the original gray scale value and the driving voltage in the case of the negative frame driving.

14. The pre-charging device for display panels according to claim 10, wherein, The second determination module is further configured to: determine a panel partition in which the pre-charging area is located in a display panel; wherein one pre-charging area comprises at least one pre-charging sub-area, and different pre-charging sub-areas are located in different panel partitions; determine a pre-charging mode of each pre-charging sub-area according to the panel partition in which each pre-charging sub-area is located and a preset mode mapping table; wherein the mode mapping table comprises a mapping relationship between the panel partition and the pre-charging mode; and for each pre-charging sub-area, determine the target gray scale value of the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area.

15. The pre-charging device for display panels according to claim 14, wherein, The second determination module is further configured to: for each pre-charging sub-area, determine the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area; determine a pre-charging coefficient of the target pixel; and determine the target gray scale value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient. The second determination module is further configured to:

16. The pre-charging device for display panels according to claim 15, wherein, determine a first pre-charging coefficient of the target pixel according to a total voltage jump amount of a source driving sub-area in which the target pixel is located and a preset first coefficient mapping table; wherein the first coefficient mapping table comprises a mapping relationship between the total voltage jump amount and the first pre-charging coefficient; and determine a second pre-charging coefficient of the target pixel according to the original gray scale value of the target pixel and a preset second coefficient mapping table; wherein the second coefficient mapping table comprises a mapping relationship between the original gray scale value and the second pre-charging coefficient. The second determination module is further configured to:

17. The pre-charging device for display panels according to claim 15, wherein, determine a gray scale adjustment value of the target pixel according to the original gray scale value of the target pixel and the pre-charging coefficient; if the target pixel is located in a jump sub-area in the pre-charging area, decrease the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel; and if the target pixel is located in a same row sub-area in the pre-charging area, increase the gray scale adjustment value on the basis of the original gray scale value of the target pixel to obtain the target gray scale value of the target pixel. ​ ​ 18. A display device comprising: The display panel and a pre-charging device of a display picture; wherein the pre-charging device of the display picture comprises: A first determining module is configured to determine a pre-charging area in the display picture according to a driving voltage of each pixel in the display picture; wherein each pre-charging area comprises a plurality of pixels in the same row, and a voltage difference between the driving voltage of the pixel in the pre-charging area and the driving voltage of the pixel in the previous row satisfies a preset condition; A second determining module is configured to determine a target gray scale value of a target pixel in the pre-charging area; wherein the target pixel refers to the pixel in the pre-charging area that needs to adjust the gray scale value; and A pre-charging module is configured to adjust an original gray scale value of the target pixel to the target gray scale value to obtain the pre-charged display picture.

19. The display device of claim 18, wherein, The first determining module in the pre-charging device of the display picture is further configured to: determine a jump sub-area in the display picture according to the driving voltage of each pixel in the display picture; wherein each jump sub-area comprises a plurality of pixels in the same row, and a voltage difference between the driving voltage of the pixel in the jump sub-area and the driving voltage of the pixel in the previous row satisfies the preset condition; and regard the jump sub-area and a same-row sub-area of the jump sub-area as the pre-charging area in the display picture; wherein the same-row sub-area and the jump sub-area are in the same row of the display picture, but a voltage difference between the driving voltage of the pixel in the same-row sub-area and the driving voltage of the pixel in the previous row does not satisfy the preset condition.

20. The display device of claim 18, wherein, The second determining module in the pre-charging device of the display picture is further configured to: determine a panel partition in which the pre-charging area is located in the display panel; wherein one pre-charging area comprises at least one pre-charging sub-area, and different pre-charging sub-areas are located in different panel partitions; determine a pre-charging mode of each pre-charging sub-area according to the panel partition in which each pre-charging sub-area is located and a preset mode mapping table; wherein the mode mapping table comprises a mapping relationship between the panel partition and the pre-charging mode; and for each pre-charging sub-area, determine the target gray scale value of the target pixel in the pre-charging sub-area according to the pre-charging mode of the pre-charging sub-area.

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