WO2020093499A1 - 一种显示面板的驱动方法、驱动装置及显示装置 - Google Patents

一种显示面板的驱动方法、驱动装置及显示装置 Download PDF

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WO2020093499A1
WO2020093499A1 PCT/CN2018/119562 CN2018119562W WO2020093499A1 WO 2020093499 A1 WO2020093499 A1 WO 2020093499A1 CN 2018119562 W CN2018119562 W CN 2018119562W WO 2020093499 A1 WO2020093499 A1 WO 2020093499A1
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sub
region
value
original pixel
threshold
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English (en)
French (fr)
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康志聪
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HKC Co Ltd
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HKC Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve

Definitions

  • the present application belongs to the technical field of display, and particularly relates to a driving method, a driving device and a display device of a display panel.
  • VA type liquid crystal panel Compared with the IPS type liquid crystal panel technology, the VA type liquid crystal panel technology has The advantages of higher production efficiency and lower manufacturing costs.
  • the brightness of the existing VA type liquid crystal panel technology rapidly saturates at a large viewing angle as the driving voltage increases, which deteriorates the image quality of the large viewing angle and greatly affects the user experience.
  • An object of the present application is to provide a driving method of a display panel, including but not limited to the purpose of reducing the color shift of the display panel.
  • a driving method for a display panel including:
  • n is an integer greater than 1;
  • the gamma value of the original pixel unit in the corresponding sub-region is reset according to the ratio and the preset gamma value conversion relationship.
  • An embodiment of the present application further provides a driving device for a display panel, including:
  • a statistical circuit configured to divide the display panel into n sub-regions, and calculate an average grayscale value of the original pixel unit in each of the sub-regions, the original pixel unit being a red pixel unit, a green pixel unit, and a blue pixel unit Any one of, where n is an integer greater than 1;
  • An interval setting circuit configured to determine, when the average gray scale value is greater than a preset gray scale threshold, a gray scale threshold interval corresponding to the sub-region according to the average gray scale value of the sub-region;
  • a calculation circuit configured to calculate a ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of original pixel units contained in the corresponding sub-region;
  • the control circuit is configured to reset the gamma value of the original pixel unit in the corresponding sub-region according to the ratio and the preset gamma value conversion relationship.
  • An embodiment of the present application further proposes a display device, including:
  • a drive control circuit which is electrically connected to the display panel, wherein the drive control circuit is configured to execute the drive method of the display panel;
  • the driving method of the display panel includes:
  • n is an integer greater than 1;
  • the gamma value of the original pixel unit in the corresponding sub-region is reset according to the ratio and the preset gamma value conversion relationship.
  • a driving method, driving device and display device for a display panel provided by an embodiment of the present application, by dividing the display panel into n sub-regions, the average grayscale value of the original pixel unit in each of the sub-regions is calculated,
  • the original pixel unit is any one of a red pixel unit, a green pixel unit, and a blue pixel unit, where n is an integer greater than 1, when the average gray scale value is greater than a preset gray scale threshold, according to
  • the average grayscale value of the subregion determines the grayscale threshold interval corresponding to the subregion, and calculates the ratio of the total amount of original pixel units in the grayscale threshold interval to the total amount of original pixel units contained in the corresponding subregion , Reset the gamma value of the original pixel unit in the corresponding sub-region according to the ratio and the preset gamma value conversion relationship, to achieve the purpose of reducing the color shift of the display panel, and to solve the existing
  • the brightness of the VA-type LCD panel technology quickly
  • FIG. 1 is a schematic flowchart of an implementation method of a display panel driving method provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of an implementation process of a driving method of a display panel provided by another embodiment of this application;
  • FIG. 3 is a schematic flowchart of an implementation method of a display panel driving method provided by another embodiment of the present application.
  • FIG. 4 is a schematic diagram of an implementation process of a driving method of a display panel provided by another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a driving device of a display panel provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a driving device for a display panel provided by another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a driving device for a display panel according to another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a driving device for a display panel provided by another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a driving device for a display panel according to another embodiment of the present application.
  • FIG. 10 is a schematic diagram of dividing a display panel into a plurality of sub-regions in an embodiment of this application;
  • FIG. 11 is a relationship diagram of an average gray-scale value, a corresponding threshold interval, and a corresponding positive viewing angle gamma value of green pixel units in a sub-region provided by an embodiment of the present application;
  • FIG. 12 is a relationship diagram of an average gray-scale value of a red pixel unit in a sub-region, a corresponding threshold interval, and a corresponding gamma value of a positive viewing angle provided by an embodiment of the present application;
  • FIG. 13 is a relationship diagram of an average gray-scale value, a corresponding threshold interval, and a corresponding positive viewing angle gamma value of blue pixel units in a sub-region provided by an embodiment of the present application.
  • the red, green and blue sub-pixels of the display panel can be divided into main sub-pixels and sub-sub-pixels, so that the overall brightness of the display panel under a large viewing angle is closer to the voltage change
  • the main sub-pixel and the sub-sub-pixel are given different driving voltages in space to solve the defect of visual role deviation.
  • This pixel design that divides the primary and secondary sub-pixels often requires the design of metal traces or the addition of thin-film transistors to drive the secondary pixels, which may sacrifice the light-transmissive opening area and affect the light transmittance of the panel, thereby increasing the backlight cost of the panel.
  • Each pixel in the display panel is composed of three sub-pixels of red, green, and blue (R, G, B).
  • the light source behind it can show different brightness levels. Specifically, the brightness level is determined by the pixel voltage.
  • the gray scale represents the level of different brightness from the darkest to the brightest. The more layers, the more delicate the picture effect can be presented. Red, green and blue of different brightness levels are combined to form dots of different colors. It can be seen that the color change of each point on the liquid crystal display (LCD) screen is actually caused by the grayscale change of the three sub-pixels that constitute this point, and the pixel voltage is set to control
  • the gray scale of each sub-pixel point can achieve the purpose of controlling the display of the picture displayed on the display panel. Therefore, by adjusting the pixel voltages of all sub-pixels in the display panel, the image quality of the image displayed on the display panel can be adjusted.
  • the gamma value (gamma value) is the corrected gamma, which is a number in the range of 0.1 to 10.
  • the brightness of the picture can be adjusted, usually the smaller the gamma value The higher the brightness of the picture, each sub-pixel unit in the display panel has its corresponding gamma value. Therefore, the image quality can be adjusted by adjusting the gamma value of the image.
  • FIG. 1 is a schematic flowchart of an implementation of a driving method of a display panel provided by an embodiment of the present application.
  • the driving method of the display panel in this embodiment includes:
  • n is an integer greater than 1.
  • the display panel in the display device is divided into n sub-regions according to the effect that the panel needs to display, and the n sub-regions can be formed according to an array, where each sub-region has the same area size, for example, a A display panel with a resolution of 1920 * 1080 is divided into 135 rows and 240 columns, and each sub-region includes 64 pixel units, and each pixel unit includes a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the average gray-scale value of the original pixel unit in each sub-region is calculated, and the original pixel unit is any one of the red pixel unit, the green pixel unit, and the blue pixel unit.
  • a grayscale threshold interval corresponding to the subregion is determined according to the average grayscale value of the subregion.
  • the average grayscale value of the original pixel unit in each subregion is obtained, and the average grayscale value of the subregion is determined.
  • the next step is performed. That is, the grayscale threshold interval corresponding to the average grayscale value of the subregion is determined according to the average grayscale value of the subregion, specifically, the corresponding first grayscale threshold is set according to the average grayscale value of each original pixel unit in each subregion And a second grayscale threshold, where the first grayscale threshold is greater than the second grayscale threshold, the first grayscale threshold and the second grayscale threshold are set to form a grayscale threshold interval, if the average grayscale value of the subregion is greater than the second If the gray level threshold value is smaller than the first gray level threshold value at the same time, the average gray level threshold value of the sub-region is within the gray level threshold interval.
  • the first grayscale threshold is an average grayscale value plus a first preset grayscale value
  • the second grayscale threshold is an average grayscale value minus a second preset grayscale value
  • the first The grayscale threshold and the first grayscale threshold form a grayscale threshold interval.
  • the preset grayscale threshold is set according to user needs, and is set to determine whether the average grayscale value of the original pixel unit in the sub-region is in a high grayscale interval, if the average grayscale value of the original pixel unit is greater than Set the preset grayscale threshold, it is determined that the average grayscale value of the original pixel unit in the sub-region is in the high grayscale interval, if the average grayscale value of the original pixel unit is less than or equal to the preset grayscale threshold set by the user, then It is determined that the average grayscale value of the original pixel unit in the sub-region is not in the high grayscale interval.
  • the preset grayscale threshold in this embodiment may be set to 180.
  • each sub-region includes three types of original pixel units, that is, each type of original pixel unit has a gamma value corresponding to the original pixel unit, and an average grayscale value is calculated for the three original pixel units of each sub-region.
  • the average grayscale values of the three original pixel units are all compared with the preset grayscale threshold.
  • the original pixel unit with an average grayscale value higher than the preset grayscale threshold is selected to determine the grayscale threshold interval for adjustment Its corresponding gamma value.
  • the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of original pixel units contained in the corresponding sub-region is calculated.
  • the grayscale threshold interval corresponding to the average grayscale value of the subregion is obtained, and the total amount of original pixel units whose grayscale value is within the grayscale threshold interval is calculated in the subregion, and the The proportion of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region.
  • the gamma value of the original pixel unit in the corresponding sub-region is reset according to the ratio and the preset gamma value conversion relationship.
  • the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is obtained, and according to the conversion relationship between the ratio and the preset gamma value, the corresponding sub-region The gamma value of the original pixel unit is reset.
  • the preset gamma value conversion relationship may be set according to user needs, for example, the preset gamma value conversion relationship may be: the total number of original pixel units of the grayscale threshold interval preset by the user The gamma value corresponding to the ratio of the total amount of all original pixel units in this sub-region.
  • the ratio of the gamma value preset by the user and the total amount of original pixel units in the gray-scale threshold interval to the total amount of original pixel units in the sub-region is linear.
  • the preset gamma value conversion relationship may be: the gamma value corresponding to the average grayscale value of the original pixel unit in the sub-region, and the gamma value may also be a linear relationship, for example, the sub-region
  • the average grayscale value of the central pixel unit and the corresponding gamma value have a preset linear relationship or non-linear relationship.
  • the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is 60%. If the ratio of the total of all original pixel units in the sub-region is greater than 60%, the gamma value of the original pixel unit in the sub-region is adjusted. Specifically, the adjustment process is to reduce the original gamma value of the original pixel unit in the sub-region, The brightness of the large viewing angle of the display panel is close to the brightness of the positive viewing angle. Generally, the gamma value of the brightness change corresponding to the best signal of the positive viewing angle is 2.2. Linearity, which reduces the color shift that is easy to occur at large viewing angles.
  • FIG. 2 is a schematic flowchart of an implementation method of a display panel driving method provided by another embodiment of the present application.
  • dividing the display panel into n sub-regions, and calculating the average grayscale value of the original pixel unit in each of the sub-regions includes:
  • the gray level value of each original pixel unit in the sub-region is detected.
  • the average grayscale value is generated according to the total number of the original pixel units in the sub-region and the grayscale value of each original pixel unit.
  • the gray-scale value of the original pixel unit in each sub-region is detected, and the original pixel unit is divided into a red pixel unit, a green pixel unit, and a blue pixel unit.
  • Species that is, the grayscale value of each original pixel unit is detected, and the number of each original pixel unit in each subregion is counted, and the average grayscale value of each original pixel unit in each subregion is calculated.
  • the grayscale threshold interval includes a first grayscale threshold and a second grayscale threshold, wherein the first grayscale threshold is greater than the second grayscale threshold, and the first grayscale threshold and the second grayscale threshold It is set to form a grayscale threshold interval. If the average grayscale value of the sub-region is greater than the second grayscale threshold and at the same time smaller than the first grayscale threshold, the average grayscale threshold of the subregion is within the grayscale threshold interval.
  • the corresponding first grayscale threshold and second grayscale threshold are set according to the average grayscale value of each original pixel unit in each sub-region
  • the first grayscale threshold is the average grayscale value plus The first preset gray scale value
  • the second gray scale threshold is the average gray scale value minus the second preset gray scale value, specifically, the first preset gray scale value and the second preset gray scale value may be Set according to user needs.
  • the first preset gray scale value is equal to the second preset gray scale value.
  • FIG. 3 is a schematic flowchart of an implementation method of a display panel driving method according to another embodiment of the present application.
  • the corresponding gamma value of the original pixel unit in the sub-region is performed Reset, including:
  • the gamma value of the original pixel unit in the sub-region is set to the gamma value corresponding to the grayscale threshold interval;
  • the gamma value of the original pixel unit in the sub-region is kept unchanged.
  • the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is greater than a preset ratio threshold, optionally, the preset ratio threshold is 60% .
  • the preset ratio threshold is 60%
  • the gamma value of the original pixel unit in the sub-region is set to The gamma value corresponding to the gray scale threshold interval.
  • the gamma value of the original pixel unit in the sub-region is kept Change, that is, the original gamma value of the original pixel unit in the sub-region is not reset.
  • the preset ratio threshold is set according to user needs, and is set to determine the proportion of the original pixel unit in the sub-region whose gray-scale value is within the gray-scale threshold interval, and the ratio is set to determine The degree of the big-vision role of the sub-region, if the proportion of the original pixels in the sub-region whose gray-scale value is in the gray-scale threshold interval is lower than the preset ratio threshold, the next step is not performed, that is, the sub-region is not
  • the gamma value of the original pixel unit in is set to the gamma value corresponding to the grayscale threshold interval.
  • the preset gamma conversion relationship in this embodiment includes that the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is greater than the preset ratio threshold
  • the average grayscale value of the original pixel unit in the sub-region is linearly related to the preset gamma value. Specifically, the average grayscale value increases from 180 to 255, and correspondingly decreases from 2.2 to 1.85.
  • the gamma value is revised downward from 2.2, correspondingly larger
  • the equivalent change of the angle of view gamma value also becomes smaller, so that the brightness change of most of the original pixel units in this sub-region is more linear.
  • FIG. 11 is a relationship diagram of an average gray-scale value, a corresponding threshold interval, and a corresponding positive viewing angle gamma value of green pixel units in a sub-region provided by an embodiment of the present application.
  • the driving chip in this embodiment is an 8-bit driving chip with a gray level value of 0 to 255.
  • Ave_Bn in each block n indicates that the green pixel unit in the sub-region labeled n
  • the average gray-scale value of the area, Number_of Ave_Gn ⁇ X in each block n means: the gray-scale value threshold interval Ave_Gn ⁇ X determined according to the average gray-scale value of the green pixel unit in the sub-region with the label n
  • the ratio of the number of pixels in the gray-scale threshold interval Ave_Gn ⁇ X of different sub-regions to the total number of pixels in the interval is greater than Y%, optionally, Y is 60, then the gamma signal of the sub-region is changed, Make the positive viewing angle gamma and other correction values of this sub-region smaller, so that the corresponding signal change of the large viewing angle brightness is close to the gamma brightness change.
  • the change of the gamma value of the positive viewing angle changes from a gray scale of 180 to 255 corresponding to 2.2 to 1.85.
  • the best signal quality of the positive viewing angle corresponds to the brightness change.
  • the gamma value is 2.2, and the large viewing angle Gamma signal drop can reduce the difference in brightness change of most pixel continuous signals in this sub-region.
  • the driving chip is an 8-bit driving chip
  • the average gray level value of the green pixel unit in the sub-region n in the sub-region is between 185 and 195
  • the average gray-scale of the sub-region is counted
  • the number of pixels in the range of plus or minus 10 accounts for the proportion of the total number of pixels in the interval.
  • the gamma adjustment in the interval is revised from 2.2 down to 2.15, the gamma signal is corrected downward, corresponding to the large viewing angle gamma, etc.
  • the effect change also becomes smaller, so that the brightness change of most Green sub-pixels in this interval is more linear, and so on.
  • the gray-scale average interval in sub-region n corresponds to different gamma values.
  • FIG. 12 is a relationship diagram of the average gray-scale value, the corresponding threshold interval, and the corresponding positive viewing angle gamma value of the red pixel unit in the sub-region provided by the embodiment of the present application.
  • the driving chip in this embodiment is an 8-bit driving chip .
  • the gray scale value is 0 to 255, as shown in FIG.
  • Ave_Rn in each block n represents the average gray scale value of the red pixel unit in the sub-region labeled n in the sub-region
  • the Number of Ave_Rn ⁇ X means: the number of gray-level threshold thresholds Ave_Rn ⁇ X determined by the red pixel unit in the sub-region labeled n in the average gray-scale value of the sub-region accounts for the total number of original pixel units in the sub-region
  • the positive viewing angle gamma value change amount Z is 0.5.
  • FIG. 13 is a relationship diagram of the average gray level value of the blue pixel unit in the sub-region, the corresponding threshold interval, and the corresponding positive viewing angle gamma value provided by the embodiment of the present application.
  • the driver chip in this embodiment is an 8-bit driver.
  • the grayscale value of the chip is 0 to 255. As shown in FIG.
  • Ave_Bn in each block n represents the average grayscale value of the blue pixel unit in the subregion labeled n in the subregion
  • each block n Number in Of_Ave_Bn ⁇ X means: the number of gray-scale threshold thresholds Ave_Bn ⁇ X determined by the blue pixel unit in the sub-region labeled n in the average gray-scale value of the sub-region accounts for the original sub-region
  • the number of blue pixel units in the sub-region labeled n in the gray-scale threshold interval Ave_Rn ⁇ X determined by the average gray-scale value of the sub-region accounts for the total number of blue pixel units in the sub-region greater than Y %
  • the numerical value makes the gamma value smaller and reduces the color shift phenomenon that is easy to occur at a large viewing angle.
  • the amount of change Z of the positive viewing angle gamma value is 0.5.
  • FIG. 4 is a schematic flowchart of an implementation of a method for driving a display panel provided by another embodiment of the present application.
  • the driving method in this embodiment further includes:
  • the gray scale values in the n sub-regions divided by the display panel may have different differences, and the compensation signal for resetting the gamma value in each sub-region is also different. Therefore, each sub-region The trend of the display screen changes with the gray scale value is also different, which may cause the difference between the brightness and gray scale value of each sub-region so that a boundary phenomenon of an uneven transition between the sub-region and the adjacent sub-region occurs.
  • the gamma value of the sub-region is spatially filtered. Specifically, the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is greater than the preset ratio Threshold, the gamma value of the original pixel unit in the sub-region is reset, then the sub-region is spatially filtered.
  • the spatial filtering can use the image enhancement method of filtering to process the image, that is, the geometric variables in the image space Filter directly on the domain to modify, suppress image data and reduce noise.
  • the spatial filtering of the gamma value of the sub-region includes:
  • the low-pass filtering process is performed on the gamma value of the sub-region to make the image in the display panel smoother, and the high-pass filtering is used to sharpen the image.
  • the low-pass filtering the gamma value of the sub-region includes:
  • the low-pass filtering process is performed on the sub-region according to the gamma value of the sub-region and the gamma value of the sub-region adjacent to the sub-region.
  • FIG. 10 is a schematic diagram of dividing a display panel into a plurality of sub-regions in an embodiment of the present application.
  • sub-regions with coordinates (x, y) are low-pass filtered, where both x and y are An integer greater than 1
  • F (x, y) is the gamma value of the sub-region with coordinates (x, y)
  • 8 adjacent to the sub-region with coordinates (x, y) are (x, y)
  • the gamma values of the sub-regions are F (x-1, y-1), F (x-1, y), F (x-1, y + 1), F (x, y-1), F ( x, y + 1), F (x + 1, y-1), F (x + 1, y) and F (x + 1, y + 1), where F (x-1, y-1) Is the gamma value of the subregion at coordinates (x-1, y-1), F (x-1, y) is the
  • F (x-1, y-1), F (x-1, y), F (x-1, y + 1), F (x, y-1), F (x, y) , F (x, y + 1), F (x + 1, y-1), F (x + 1, y) and F (x + 1, y + 1) weights can be based on the penetration rate of the real panel Uniformity is set, where the gamma values F (x-1, y-1), F (x-1, y), F (x-1, y + 1), F (x, y-1), F (x, y), F (x, y + 1), F (x + 1, y-1), F (x + 1, y) and F (x + 1, y + 1 )
  • the weights w1, w2, w3, w4, w5, w6, w7, w8, and w9 may have the same value, for example, w1, w2, w3, w4, w5, w6, w7, and w8 may all be 1/8 ,
  • the weights w1, w2, w3, w4, w5, w6, w7, w8, and w9 can be different values, and the user can adjust the weight of the gamma value of each sub-region as necessary to make the adjacent sub-regions Changes in the area will not be too obvious.
  • FIG. 5 is a schematic structural diagram of a driving device of a display panel according to an embodiment of the present application.
  • the driving device in this embodiment includes:
  • the statistical circuit 10 is configured to divide the display panel into n sub-regions, and calculate an average grayscale value of the original pixel unit in each of the sub-regions, the original pixel units are red pixel units, green pixel units, and blue pixels Any item in the unit, where n is an integer greater than 1;
  • the interval setting circuit 20 is configured to, when the average grayscale value is greater than a preset grayscale threshold, determine a grayscale threshold interval corresponding to the subregion according to the average grayscale value of the subregion;
  • the calculation circuit 30 is set to calculate the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of original pixel units contained in the corresponding sub-region; the control circuit 40 is set to be based on the ratio and the preset The gamma value conversion relationship resets the gamma value of the original pixel unit in the corresponding sub-region.
  • the statistical circuit 10 divides the display panel in the display device into n sub-regions, and the n sub-regions may be formed according to an array, wherein each sub-region has the same area size, for example A display panel with a resolution of 1920 * 1080 is divided into 135 rows and 240 columns, and each sub-region includes 64 pixel units, and each pixel unit includes a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the average gray-scale value of the original pixel unit in each sub-region is calculated, and the original pixel unit is any one of the red pixel unit, the green pixel unit, and the blue pixel unit.
  • the interval setting circuit 20 obtains the average grayscale value of the original pixel unit in each subregion, and judges the average grayscale value of the subregion. When the average grayscale value is greater than the preset grayscale threshold, the average grayscale of the subregion is used.
  • the grayscale value determines the grayscale threshold interval corresponding to the average grayscale value.
  • the gamma value of the original pixel unit in the sub-region is not reset, which saves calculation time and calculation steps.
  • the preset grayscale threshold in this embodiment may be set to 180. When the average grayscale value of the original pixel unit in the sub-region is lower than 180, the gamma value of the original pixel unit in the sub-region is not adjusted .
  • each sub-region includes three original pixel units, that is, each original pixel unit has a gamma value corresponding to the original pixel unit, and an average grayscale value is calculated for the three original pixel units of each sub-region.
  • the average gray scale values of the original pixel units are compared with the preset gray scale threshold.
  • the original pixel unit whose average gray level value is higher than the preset gray level threshold is selected to determine the gray level threshold interval to adjust its corresponding gamma value.
  • the calculation circuit 30 obtains the gray-scale threshold interval corresponding to the average gray-scale value of the sub-region, calculates the total amount of original pixel units whose gray-scale value is in the gray-scale threshold interval in the sub-region, and calculates the gray-scale threshold The ratio of the total amount of original pixel units in the threshold interval to the total amount of all original pixel units in the sub-region.
  • the control circuit 40 obtains the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region, and according to the conversion relationship between the ratio and the preset gamma value, converts the original in the corresponding sub-region The gamma value of the pixel unit is reset.
  • the preset gamma value conversion relationship may be set according to user needs.
  • the preset gamma value conversion relationship may be: the total number of original pixel units and the The gamma value corresponding to the ratio of the total amount of all original pixel units in the sub-region, or the gamma value corresponding to the average gray-scale value of the original pixel units in the sub-region, the gamma value can also be some linear relationship, for example, the original The average grayscale value of the pixel unit and the corresponding gamma value have a preset linear relationship or non-linear relationship.
  • the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is 60%. If the ratio of the total of all original pixel units in the sub-region is greater than 60%, the gamma value of the original pixel unit in the sub-region is adjusted. Specifically, the adjustment process is to reduce the original gamma value of the original pixel unit in the sub-region, The brightness of the large viewing angle of the display panel is close to the brightness of the positive viewing angle. Generally, the gamma value of the brightness change corresponding to the best signal of the positive viewing angle is 2.2. Linearity, which reduces the color shift that is easy to occur at large viewing angles.
  • FIG. 11 is a relationship diagram of an average gray-scale value, a corresponding threshold interval, and a corresponding positive viewing angle gamma value of green pixel units in a sub-region provided by an embodiment of the present application.
  • the driving chip in this embodiment is an 8-bit driving chip with a gray level value of 0 to 255.
  • Ave_Bn in each block n indicates that the green pixel unit in the sub-region labeled n
  • the average gray-scale value of the area, Number_of Ave_Gn ⁇ X in each block n means: the gray-scale value threshold interval Ave_Gn ⁇ X determined according to the average gray-scale value of the green pixel unit in the sub-region labeled n in the sub-region
  • the ratio of the number of pixels in the gray-scale threshold interval Ave_Gn ⁇ X of different sub-regions to the total number of pixels in the interval is greater than Y%, optionally, Y is 60, then the gamma signal of the sub-region is changed, Make the positive viewing angle gamma and other correction values of this sub-region smaller, so that the corresponding signal change of the large viewing angle brightness is close to the gamma brightness change.
  • the change of the gamma value of the positive viewing angle changes from a gray scale of 180 to 255 corresponding to 2.2 to 1.85.
  • the best signal quality of the positive viewing angle corresponds to the brightness change.
  • the gamma value is 2.2, and the large viewing angle Gamma signal drop can reduce the difference in brightness change of most pixel continuous signals in this sub-region.
  • the driving chip is an 8-bit driving chip
  • the average gray level value of the green pixel unit in the sub-region n in the sub-region is between 185 and 195
  • the average gray-scale of the sub-region is counted
  • the number of pixels in the range of plus or minus 10 accounts for the proportion of the total number of pixels in the interval.
  • the gamma adjustment in the interval is revised from 2.2 down to 2.15, the gamma signal is corrected downward, corresponding to the large viewing angle gamma, etc.
  • the effect change also becomes smaller, so that the brightness change of most Green sub-pixels in this interval is more linear, and so on.
  • the gray-scale average interval in sub-region n corresponds to different gamma values.
  • FIG. 12 is a relationship diagram of the average gray-scale value, the corresponding threshold interval, and the corresponding positive viewing angle gamma value of the red pixel unit in the sub-region provided by the embodiment of the present application.
  • the driving chip in this embodiment is an 8-bit driving chip .
  • the gray scale value is 0 to 255, as shown in FIG.
  • Ave_Rn in each block n represents the average gray scale value of the red pixel unit in the sub-region labeled n in the sub-region
  • the Number of Ave_Rn ⁇ X means: the number of gray-level threshold thresholds Ave_Rn ⁇ X determined by the red pixel unit in the sub-region labeled n in the average gray-scale value of the sub-region accounts for the total number of original pixel units in the sub-region
  • the positive viewing angle gamma value change amount Z is 0.5.
  • FIG. 13 is a relationship diagram of the average gray level value of the blue pixel unit in the sub-region, the corresponding threshold interval, and the corresponding positive viewing angle gamma value provided by the embodiment of the present application.
  • the driver chip in this embodiment is an 8-bit driver.
  • the grayscale value of the chip is 0 to 255. As shown in FIG.
  • Ave_Bn in each block n represents the average grayscale value of the blue pixel unit in the subregion labeled n in the subregion
  • each block n Number in Of_Ave_Bn ⁇ X means: the number of gray-scale threshold thresholds Ave_Bn ⁇ X determined by the blue pixel unit in the sub-region labeled n in the average gray-scale value of the sub-region accounts for the original sub-region
  • the number of blue pixel units in the sub-region labeled n in the gray-scale threshold interval Ave_Rn ⁇ X determined by the average gray-scale value of the sub-region accounts for the total number of blue pixel units in the sub-region greater than Y %
  • the numerical value makes the gamma value smaller and reduces the color shift phenomenon that is easy to occur at a large viewing angle.
  • the amount of change Z of the positive viewing angle gamma value is 0.5.
  • FIG. 6 is a schematic structural diagram of a driving device for a display panel according to another embodiment of the present application.
  • the statistical circuit 10 includes:
  • the first statistical circuit 101 is configured to detect the gray scale value of each original pixel unit in the sub-region
  • the second statistical circuit 102 is configured to generate the average grayscale value according to the total number of the original pixel units in the sub-region and the grayscale value of each original pixel unit.
  • the gray-scale value of the original pixel unit in each sub-region is detected.
  • the original pixel unit is divided into a red pixel unit, a green pixel unit and There are three types of blue pixel units, that is, the grayscale value of each original pixel unit is detected, and the number of each original pixel unit in each sub-region is counted.
  • the second statistical circuit 102 calculates each type in each sub-region The average grayscale value of the original pixel unit.
  • FIG. 7 is a schematic structural diagram of a driving device for a display panel according to another embodiment of the present application.
  • the interval setting circuit 20 includes:
  • the first interval setting circuit 201 is configured to set a first grayscale threshold of the grayscale threshold interval, the first grayscale threshold is the average grayscale value plus a first preset grayscale value;
  • the second interval setting circuit 202 is configured to set a second grayscale threshold of the grayscale threshold interval, the second grayscale threshold being the average grayscale value minus a second preset grayscale value.
  • the first interval setting circuit 201 and the second interval setting circuit 202 respectively set the corresponding first gray level threshold and the second gray level threshold according to the average gray level value of each original pixel unit in each sub-region, wherein the first gray level The gray level threshold is greater than the second gray level threshold.
  • the first gray level threshold and the second gray level threshold are set to form a gray level threshold interval. If the average gray level value of the sub-region is greater than the second gray level threshold and at the same time, it is less than the first gray level threshold , Then the average grayscale threshold of the sub-region is within the grayscale threshold interval.
  • the first grayscale threshold is an average grayscale value plus a first preset grayscale value
  • the second grayscale threshold is an average grayscale value minus a second preset grayscale value, specifically .
  • the first preset grayscale value and the second preset grayscale value can be set according to user needs.
  • the first preset gray scale value is equal to the second preset gray scale value.
  • FIG. 8 is a schematic structural diagram of a driving device for a display panel according to another embodiment of the present application.
  • control circuit 40 includes:
  • the ratio judgment circuit 401 is set to judge whether the ratio is greater than a preset ratio threshold
  • the gamma value setting circuit 402 is configured to set the gamma value of the original pixel unit in the sub-region to the gamma value corresponding to the grayscale threshold interval when the ratio is greater than the preset ratio threshold , When the ratio is less than or equal to the preset ratio threshold, the gamma value of the original pixel unit in the sub-region is kept unchanged.
  • the ratio judgment circuit 401 judges whether the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is greater than a preset ratio threshold, optionally, the preset ratio The threshold value is 60%.
  • the gamma value setting circuit 402 divides the original The gamma value of the pixel unit is set to the gamma value corresponding to the gray level threshold interval.
  • the gamma value of the original pixel unit in the sub-region is kept Change, that is, the original gamma value of the original pixel unit in the sub-region is not corrected.
  • the preset gamma conversion relationship in this embodiment includes that the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is greater than the preset ratio threshold
  • the average grayscale value of the original pixel unit in the sub-region is linearly related to the preset gamma value. Specifically, the average grayscale value increases from 180 to 255, and correspondingly decreases from 2.2 to 1.85.
  • the gamma value of the sub-region is adjusted downward from 2.2, Correspondingly, the equivalent change of the gamma value of the large viewing angle also becomes smaller, so that the brightness change of most of the original pixel units in the sub-region is more linear.
  • FIG. 9 is a schematic structural diagram of a driving device for a display panel according to another embodiment of the present application.
  • the driving device further includes: a spatial filter circuit 50 configured to perform spatial filtering on the gamma value of the sub-region.
  • the gray scale values in the n sub-regions divided by the display panel may be different, and the compensation signal for correcting the gamma value in each sub-region is also different. Therefore, the The tendency of the display screen to change with the gray scale value is also different, which may cause the difference in brightness and gray scale value between each sub-region to cause a boundary phenomenon of an uneven transition between the sub-region and the adjacent sub-region.
  • the spatial filter circuit 50 performs spatial filtering on the gamma value of the original pixel unit in the corrected sub-region.
  • the original pixel unit in the corrected sub-region is, The ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is greater than the preset ratio threshold.
  • the gamma value of the original pixel unit in the sub-region is reset, then This sub-region is spatially filtered.
  • the spatial filtering can use image enhancement methods for filtering to process the image, that is, directly modify the image spatial geometric variable domain, suppress the image data and reduce the noise. For example, through low-pass filtering to make the image Smooth, using high-pass filtering to sharpen the image.
  • the low-pass filtering the gamma value of the sub-region includes:
  • the low-pass filtering process is performed on the sub-region according to the gamma value of the sub-region and the gamma value of the sub-region adjacent to the sub-region.
  • FIG. 10 is a schematic diagram of the display panel divided into a plurality of sub-regions in this embodiment.
  • the spatial filter circuit 50 performs low-pass filtering on the sub-region with coordinates (x, y), where x and y are both integers greater than 1, and F (x, y) is the coordinates with (x,
  • the gamma value of the sub-region of y), the gamma values of the 8 sub-regions (x, y) adjacent to the sub-region with coordinates (x, y) are F (x-1, y-1 ), F (x-1, y), F (x-1, y + 1), F (x, y-1), F (x, y + 1), F (x + 1, y-1) , F (x + 1, y), and F (x + 1, y + 1), where F (x-1, y-1) is the gamma of the subregion at coordinates (x-1, y-1) Value, F (x-1, y) is the gamma value of the sub-region of the coordinate (x-1, y), F (x-1, , y
  • F (x-1, y-1), F (x-1, y), F (x-1, y + 1), F (x, y-1), F (x, y) , F (x, y + 1), F (x + 1, y-1), F (x + 1, y) and F (x + 1, y + 1) have weights of w1, w2, w3, w4, w5, w6, w7, w8, and w9
  • F (x-1, y-1), F (x-1, y), F (x-1, y + 1), F (x, y-1), F (x, y) , F (x, y + 1), F (x + 1, y-1), F (x + 1, y) and F (x + 1, y + 1) weights can be based on the penetration rate of the real panel Uniformity is set, where the gamma values F (x-1, y-1), F (x-1, y), F (x-1, y + 1), F (x, y-1), F (x, y), F (x, y + 1), F (x + 1, y-1), F (x + 1, y) and F (x + 1, y + 1 )
  • the weights w1, w2, w3, w4, w5, w6, w7, w8, and w9 may have the same value, for example, w1, w2, w3, w4, w5, w6, w7, and w8 may all be 1/8 ,
  • the weights w1, w2, w3, w4, w5, w6, w7, w8, and w9 can be different values, and the user can adjust the weight of the gamma value of each sub-region as necessary to make the adjacent sub-regions Changes in the area will not be too obvious.
  • a display device including:
  • a drive control circuit which is electrically connected to the display panel, wherein the drive control circuit is configured to execute the drive method of the display panel;
  • the driving method of the display panel includes:
  • n is an integer greater than 1;
  • the gamma value of the original pixel unit in the corresponding sub-region is reset according to the ratio and the preset gamma value conversion relationship.
  • the ratio of the total amount of original pixel units in the gray-scale threshold interval to the total amount of all original pixel units in the sub-region is obtained, and according to the conversion relationship between the ratio and the preset gamma value, the corresponding sub-region The gamma value of the original pixel unit is reset.
  • the display device may be any type of display device, such as LCD (Liquid Crystal), OLED (Organic Electroluminescence Display), QLED (Quantum Dot Light Emitting Diodes, (Quantum dot light-emitting diode) display device or curved display device, etc.
  • LCD Liquid Crystal
  • OLED Organic Electroluminescence Display
  • QLED Quantantum Dot Light Emitting Diodes
  • QLED Quadantum dot light-emitting diode
  • the display panel includes an array of original pixel units composed of multiple rows of pixels and multiple columns of pixels.
  • the drive control circuit may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit), or by an ASIC (Application Specific Integrated Circuit).
  • a general-purpose integrated circuit such as a CPU (Central Processing Unit), or by an ASIC (Application Specific Integrated Circuit).
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

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Abstract

一种显示面板的驱动方法、驱动装置及显示装置中，将显示面板划分为n个子区域，计算每个子区域中原像素单元的平均灰阶值，当平均灰阶值大于预设灰阶阈值时，根据子区域的平均灰阶值确定与子区域对应的灰阶阈值区间，计算灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值，根据比值以及预设的伽马值转换关系，将对应的子区域中的原像素单元的伽马值进行重置。

Description

一种显示面板的驱动方法、驱动装置及显示装置
本申请要求于2018年11月05日提交中国专利局，申请号为201811308708.8，发明名称为“一种显示面板的驱动方法、驱动装置及显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于显示技术领域，尤其涉及一种显示面板的驱动方法、驱动装置及显示装置。
背景技术
这里的陈述仅提供与本申请有关的背景信息，而不必然地构成现有技术。现有的大尺寸液晶显示面板通常采用垂直配向技术(Vertical Alignment，VA)型液晶面板或者平面转换(In-Plane Switching，IPS)型液晶面板，VA型液晶面板技术相比IPS型液晶面板技术具有生产效率更高、制造成本更低的优势。
然而，现有的VA型液晶面板技术在大视角的亮度随着驱动电压增加快速饱和，使得大视角的画质品质恶化，极大影响用户的体验。
申请内容
本申请的一个目的在于提供一种显示面板的驱动方法，包括但不限于实现降低显示面板的色偏的目的。
本申请实施例采用的技术方案是：
提供了一种显示面板的驱动方法，包括：
将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，其中，n为大于1的整数；
当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；
根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
本申请实施例还提供了一种显示面板的驱动装置，包括：
统计电路，设置为将所述显示面板划分为n个子区域，计算每个所述子区域中原像素 单元的平均灰阶值，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，其中，n为大于1的整数；
区间设置电路，设置为当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
计算电路，设置为计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；
控制电路，设置为根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
本申请实施例还提出了一种显示装置，包括：
显示面板；
以及驱动控制电路，所述驱动控制电路与所述显示面板电性连接，其中，所述驱动控制电路设置为执行所述显示面板的驱动方法；
所述显示面板的驱动方法包括：
将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，其中，n为大于1的整数；
当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；
根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
在本申请实施例提供的一种显示面板的驱动方法、驱动装置及显示装置中，通过将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，其中，n为大于1的整数，当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间，计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值，根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置，实现了降低显示面板的色偏的目的，解决了现有的VA型液晶面板技术在大视角的亮度随着驱动电压增加快速饱和，使得大视角的画质品质恶化，极大影响用户的体验的问题。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请的一个实施例提供的显示面板的驱动方法的实现流程示意图；
图2为本申请的另一个实施例提供的显示面板的驱动方法的实现流程示意图；
图3为本申请的另一个实施例提供的显示面板的驱动方法的实现流程示意图；
图4为本申请的另一个实施例提供的显示面板的驱动方法的实现流程示意图；
图5为本申请的一个实施例提供的显示面板的驱动装置的结构示意图；
图6为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图；
图7为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图；
图8为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图；
图9为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图；
图10为本申请的一个实施例中对显示面板划分为多个子区域的示意图；
图11为本申请的一个实施例提供的子区域中的绿色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图；
图12为本申请实施例提供的子区域中的红色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图；
图13为本申请实施例提供的子区域中的蓝色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图。
本申请的实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。例如包含一系列步骤或单元的过程、方法或系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，术语“第一”、“第二”和“第三”等是设置为区别不同对象，而非设置为描述特定顺序。
在驱动VA型显示面板显示的过程中，显示面板在大视角下的亮度会随着驱动电压上升而快速饱和，造成大视角画质对比相较于正视角画质品质恶化严重。为了解决视角色偏 的问题，可以将显示面板的红色子像素、绿色子像素和蓝色子像素划分为主子像素和次子像素，使得显示面板在大视角下的整体亮度随着电压变化更接近于正视角画质，通过在空间上给予主子像素和次子像素不同的驱动电压，以解决视角色偏的缺陷。这种划分主、次子像素的像素设计往往需要再设计金属走线或者增加薄膜晶体管以驱动次像素，可能牺牲可透光开口区，影响面板的透光率，而造成面板的背光成本上升。
显示面板中的每一个像素，是由红、绿、蓝(R、G、B)三个子像素组成的。每一个子像素，其背后的光源都可以显现出不同的亮度级别，具体的，该亮度级别由像素电压决定。灰阶代表了由最暗到最亮之间不同亮度的层次级别，层级越多，所能够呈现的画面效果也就越细腻。不同亮度层次的红、绿、蓝组合起来，最终形成不同色彩的点。由此可见，液晶显示器(Liquid Crystal Display，LCD)屏幕上每一个点的色彩变化，其实都是由构成这个点的三个子像素的灰阶变化所带来的，而像素电压正是设置为控制每个子像素点的灰阶，从而达到控制显示面板显示的画面显示的目的。因此，通过调节显示面板中的所有的子像素的像素电压进行调节可以对该显示面板显示的图像进行画质品质的调节。
伽马值(gamma值)为校正灰度系数，是一个范围在0.1～10之间的数字，通过调节一副画面的伽马值，可以对该画面的亮度进行调整，通常伽马值越小，图片的亮度越高，显示面板中的每种子像素单元均存在其对应的伽马值，因此，通过调节图像的伽马值可以对该图像进行画质品质的调节。
图1为本申请的一个实施例提供的显示面板的驱动方法的实现流程示意图。
如图1所示，本实施例中的显示面板的驱动方法包括：
将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，其中，n为大于1的整数。
在一个实施例中，根据面板需要显示的效果，将显示装置中的显示面板划分为n个子区域，该n个子区域可以按照阵列式划分形成，其中每个子区域的面积大小相同，例如，将一块分辨率为1920*1080的显示面板，分割成135行和240列，每个子区域中包括64个像素单元，每个像素单元均包括红色像素单元、绿色像素单元以及蓝色像素单元。在显示面板划分为多个子区域后，计算每个子区域中原像素单元的平均灰阶值，该原像素单元即为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一种。
可选的，当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间。
在一个实施例中，获取每个子区域中原像素单元的平均灰阶值，对子区域的平均灰阶值进行判断，当该平均灰阶值大于预设灰阶阈值时，则进行下一步骤，即根据该子区域的平均灰阶值确定其平均灰阶值对应的灰阶阈值区间，具体的，根据每个子区域中的每种原 像素单元的平均灰阶值设置对应的第一灰阶阈值和第二灰阶阈值，其中，第一灰阶阈值大于第二灰阶阈值，第一灰阶阈值与第二灰阶阈值设置为形成灰阶阈值区间，若子区域的平均灰阶值大于第二灰阶阈值，同时又小于第一灰阶阈值，则该子区域的平均灰阶阈值位于该灰阶阈值区间内。
在一个实施例中，该第一灰阶阈值为平均灰阶值加上第一预设灰阶值，该第二灰阶阈值为平均灰阶值减去第二预设灰阶值，该第二灰阶阈值与第一灰阶阈值形成灰阶阈值区间，当获取到子区域的平均灰阶值时，则获取该平均灰阶值所处的灰阶阈值区间。
在一个实施例中，该预设灰阶阈值根据用户需要设置，设置为判断该子区域中的原像素单元的平均灰阶值是否处于高灰阶区间，若原像素单元的平均灰阶值大于用户设置的预设灰阶阈值，则判定该子区域中的原像素单元的平均灰阶值处于高灰阶区间，若原像素单元的平均灰阶值小于或等于用户设置的预设灰阶阈值，则判定该子区域中的原像素单元的平均灰阶值不处于高灰阶区间。
可选的，由于大视角色偏现场主要是由高灰阶值的像素信号引起，因此当该子区域的原像素单元的平均灰阶值低于预设灰阶阈值时，则不进行下一步骤，即不对该子区域中的原像素单元的伽马值进行重置，节省了计算时间和计算步骤。例如，本实施例中的预设灰阶阈值可以设置为180，当子区域中的原像素单元的平均灰阶值低于180，则不对该子区域的该原像素单元的伽马值进行调整，具体的，每个子区域包括三种原像素单元，即每种原像素单元均具有该原像素单元对应的伽马值，对每个子区域的三种原像素单元进行平均灰阶值计算，将三种原像素单元进行平均灰阶值均与预设灰阶阈值进行对比，在一个实施例中，选择平均灰阶值高于预设灰阶阈值的原像素单元进行灰阶阈值区间确定以调整其对应的伽马值。
可选的，计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值。
在一个实施例中，获取子区域的平均灰阶值所对应的灰阶阈值区间，并在该子区域中计算灰阶值处于该灰阶阈值区间的原像素单元的总量，并计算该处于该灰阶阈值区间的原像素单元的总量占该子区域中所有原像素单元总量的比例。
可选的，根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
在一个实施例中，获取灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值，根据该比值与预设的伽马值转换关系，将对应的子区域中的原像素单元的伽马值进行重置。
在一个实施例中，该预设的伽马值转换关系可以根据用户需要设置，例如，该预设的 伽马值转换关系可以为：用户预先设置的灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值对应的伽马值。
在一个实施例中，所述用户预先设置的伽马值与所述灰阶阈值区间的原像素单元的总量与所述子区域中原像素单元的总量的比值呈线性关系。
在一个实施例中，该预设的伽马值转换关系可以可以为：子区域中原像素单元的平均灰阶值对应的伽马值，伽马值还可以为某种线性关系，例如，子区域中原像素单元的平均灰阶值与对应的伽马值呈预设的线性关系或者非线性关系。
在一个实施例中，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值为60％，当灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于60％，则调整该子区域中该原像素单元的伽马值，具体的，该调整过程为降低该子区域中该原像素单元的原始伽马值，让显示面板的大视角亮度接近正视角亮度，一般正视角画质最佳信号对应的亮度变化的伽马值为2.2，大视角的伽马值降低可以增加该子区域中多数像素信号对于亮度变化的线性度，从而减小大视角容易发生的色偏现象。
图2为本申请的另一个实施例提供的显示面板的驱动方法的实现流程示意图。
如图2所示，在一个实施例中，将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，包括：
检测所述子区域中每个所述原像素单元的灰阶值。
可选的，根据所述子区域中的所述原像素单元的总数以及每个所述原像素单元的灰阶值生成所述平均灰阶值。
在一个实施例中，将显示面板划分为n个子区域后，对每个子区域中的原像素单元的灰阶值进行检测，原像素单元分为红色像素单元、绿色像素单元以及蓝色像素单元三种，即对每种原像素单元的灰阶值进行检测，并统计每个子区域中的每种原像素单元的个数，计算每个子区域中的每种原像素单元的平均灰阶值。
在一个实施例中，所述灰阶阈值区间包括第一灰阶阈值和第二灰阶阈值，其中，第一灰阶阈值大于第二灰阶阈值，第一灰阶阈值与第二灰阶阈值设置为形成灰阶阈值区间，若子区域的平均灰阶值大于第二灰阶阈值，同时又小于第一灰阶阈值，则该子区域的平均灰阶阈值位于该灰阶阈值区间内。
在一个实施例中，根据每个子区域中的每种原像素单元的平均灰阶值设置对应的第一灰阶阈值和第二灰阶阈值，该第一灰阶阈值为平均灰阶值加上第一预设灰阶值，该第二灰阶阈值为平均灰阶值减去第二预设灰阶值，具体的，该第一预设灰阶值与该第二预设灰阶值可以根据用户需要进行设置。
在一个实施例中，第一预设灰阶值等于第二预设灰阶值。
图3为本申请的另一个实施例提供的显示面板的驱动方法的实现流程示意图。
如图3所示，在一个实施例中的显示面板的驱动方法中，根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置，包括：
判断所述比值是否大于预设比值阈值。
可选的，若所述比值大于所述预设比值阈值，则将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值；
可选的，若所述比值小于或者等于预设比值阈值，则保持所述子区域中的原像素单元的伽马值不变。
在一个实施例中，判断灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值是否大于预设比值阈值，可选的，该预设比值阈值为60％，当灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值，则将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值。当灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值小于或者等于预设比值阈值时，则保持所述子区域中的原像素单元的伽马值不变，即不对该子区域中的原像素单元的原伽马值进行重置。
在一个实施例中在一个实施例中，该预设比值阈值根据用户需要设置，设置为判断该子区域中灰阶值位于所述灰阶阈值区间的原像素单元的比例，该比例设置为判断该子区域的大视角色偏的程度，若子区域中灰阶值位于所述灰阶阈值区间的原像素的比例低于预设比值阈值，则不执行下一步步骤，即不将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值。
在一个实施例中，本实施例中的预设的伽马值转换关系包括，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值时，子区域的原像素单元的平均灰阶值与预设的伽马值呈线性关系，具体的，平均灰阶值由180增加到255，对应的由2.2降低到1.85，设伽马值为Y，平均灰阶值为X，则有Y＝-(0.35/75)X+3.04，其中，X大于或等于180，且X小于或等于255。在一个实施例中，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值时，该的伽马值由2.2向下修正，相应大视角伽马值等效变化也变小，使得该子区域的大多数原像素单元的亮度变化较为线性。
图11为本申请的一个实施例提供的子区域中的绿色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图。
本实施例中的驱动芯片为8位驱动芯片，其灰阶值为0至255，如图11所示，各区块n中的Ave_Bn表示标号为n的子区域中的绿色像素单元的在该子区域的平均灰阶值，各区 块n中的Number of Ave_Gn±X表示：根据标号为n的子区域中的绿色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Gn±X内的个数占该子区域原像素单元总量的比值大于或等于Y％，可选的，Y＝60％。
具体的，不同的子区域的灰阶值阈值区间Ave_Gn±X内的像素数目占该区间总像素数目比例当大于Y％，可选的，Y为60，则更改该子区域的伽马信号，使该子区域的正视角伽马等校数值变小,让大视角亮度对应信号变化接近伽马的亮度变化，可选的，伽马<2.4。
在一个实施例中，正视角伽马值的变化由180到255的灰阶度对应为2.2变化到1.85，可选的，正视角画质最佳信号对应亮度变化伽马值为2.2,大视角伽马信号下降可以减小该子区域中的多数画素连续信号对于亮度变化的差异性。
如图11所示，驱动芯片为8位驱动芯片时，当子区域n中的绿色像素单元在该子区域的平均灰阶值在185到195之间,则统计该子区域的在平均灰阶值正负10范围内的像素数目占该区间总像素数目比例，当该比例大于60％，该区间伽马调整由2.2往下修正为2.15，伽马信号向下修正，相应大视角伽马等效变化也变小，使得该区间的大多数Green子像素的亮度变化较为线性，以此类推，子区域n中的灰阶平均值区间对应不同的伽马值变化。
图12为本申请实施例提供的子区域中的红色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图，本实施例中的驱动芯片为8位驱动芯片，其灰阶值为0至255，如图12所示，各区块n中的Ave_Rn表示标号为n的子区域中的红色像素单元的在该子区域的平均灰阶值，各区块n中的Number of Ave_Rn±X表示：根据标号为n的子区域中的红色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Rn±X内的个数占该子区域原像素单元总量的比值大于或等于Y％，可选的，Y＝60％。
当标号为n的子区域中的红色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Rn±X内的个数占该子区域红色像素单元总量的比值大于Y％时，根据如图12中的子区域中的红色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图调整该子区域的红色像素单元的伽马数值，使伽马数值变小，减少大视角容易发生的色偏现象，可选的，正视角伽马值的变化量Z为0.5。
图13为本申请实施例提供的子区域中的蓝色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图，本实施例中的驱动芯片为8位驱动芯片，其灰阶值为0至255，如图11所示，各区块n中的Ave_Bn表示标号为n的子区域中的蓝色像素单元的在该子区域的平均灰阶值，各区块n中的Number of Ave_Bn±X表示：根据标号为n的子区域中的蓝色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Bn±X内的个数占该子区域原像素单元总量的比值大于或等于Y％，可选的，Y＝60％。当标号为n 的子区域中的蓝色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Rn±X内的个数占该子区域蓝色像素单元总量的比值大于Y％时，根据如图13中的子区域中的蓝色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图调整该子区域的蓝色像素单元的伽马数值，使伽马数值变小，减少大视角容易发生的色偏现象，可选的，正视角伽马值的变化量Z为0.5。
图4为本申请的另一个实施例提供的显示面板的驱动方法的实现流程示意图。
如图4所示，本实施例中的驱动方法还包括：
对所述子区域的伽马值进行空间滤波。
在一个实施例中，显示面板划分的n个子区域中的灰阶值可能差异情况各不相同，各个子区域中的对伽马值进行重置的补偿信号也各不相同，因此，各个子区域的显示画面随着灰阶值变化的趋势也不相同，可能导致各个子区域的之间的亮度和灰阶值差异使得该子区域与相邻子区域之间产生不平滑过渡的边界现象。
在一个实施例中，对所述子区域的伽马值进行空间滤波，具体的，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值，该子区域中的原像素单元的伽马值进行了重置操作，则对该子区域进行空间滤波，空间滤波可以采用滤波处理的影像增强方法对图像进行处理，即在图像空间几何变量域上直接修改、抑制图像数据并削减噪声的滤波。
在一个实施例中，所述对所述子区域的伽马值进行空间滤波包括：
对所述子区域的伽马值进行低通滤波处理。
具体的，通过对所述子区域的伽马值进行低通滤波处理，使得显示面板中的图像更加平滑，采用高通滤波使得图像变的锐化。
在一个实施例中，所述对所述子区域的伽马值进行低通滤波处理，包括：
根据所述子区域的伽马值以及与所述子区域相邻的子区域的伽马值对所述子区域进行低通滤波处理。
图10为本申请的一个实施例中对显示面板划分为多个子区域的示意图，如图10所示，对坐标为(x，y)的子区域进行低通滤波，其中，x和y均为大于1的整数，F(x,y)为坐标为(x，y)的子区域的伽马值，与坐标为(x，y)的子区域相邻的8个为(x，y)的子区域的伽马值分别为F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)，其中，F(x-1,y-1)为坐标(x-1,y-1)的子区域的伽马值，F(x-1,y)为坐标(x-1,y)的子区域的伽马值，F(x-1,y+1)为坐标(x-1,y+1)的子区域的伽马值，F(x,y-1)为坐标(x,y-1)的子区域的伽马值，F(x,y+1)为坐标(x,y+1)的子区域的伽马值，F(x+1,y-1)为坐标(x+1,y-1)的子区域的伽马值，F(x+1,y)为坐 标(x+1,y)的子区域的伽马值，F(x+1,y+1)为坐标(x+1,y+1)的子区域的伽马值。可选的，F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)的权重分别为w1、w2、w3、w4、w5、w6、w7、w8以及w9，则坐标为(x，y)的子区域的伽马值进行空间滤波后的伽马值为g(x,y)＝F(x-1,y-1)*w1+F(x-1,y)*w2+F(x-1,y+1)*w3+F(x,y-1)*w4+F(x,y)*w5+F(x,y+1)*w6+F(x+1,y-1)*w7+F(x+1,y)*w8+F(x+1,y+1)w9。
可选的，F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)的权重可以根据现实面板的穿透率均匀性进行设置，其中，上述9个子区域的伽马值F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)的权重之和等于1，即w1+w2+w3+w4+w5+w6+w7+w8+w9＝1。具体的，该权重w1、w2、w3、w4、w5、w6、w7、w8以及w9可以为相同值，例如，w1、w2、w3、w4、w5、w6、w7以及w8可以均为1/8，可选的，权重w1、w2、w3、w4、w5、w6、w7、w8以及w9可以为不同值，用户可以根据需要对各个子区域的伽马值的权重进行调整，以使相邻子区域的变化不会太明显。
图5为本申请的一个实施例提供的显示面板的驱动装置的结构示意图。
如图5所示，本实施例中的驱动装置，包括：
统计电路10，设置为将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，其中，n为大于1的整数；
区间设置电路20，设置为当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
计算电路30，设置为计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；控制电路40，设置为根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
在一个实施例中，根据面板需要显示的效果，统计电路10将显示装置中的显示面板划分为n个子区域，该n个子区域可以按照阵列式划分形成，其中每个子区域的面积大小相同，例如，将一块分辨率为1920*1080的显示面板，分割成135行和240列，每个子区域中包括64个像素单元，每个像素单元均包括红色像素单元、绿色像素单元以及蓝色像素单元。在显示面板划分为多个子区域后，计算每个子区域中原像素单元的平均灰阶值，该原像素单元即为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一种。区间设置电路20获取每个子区域中原像素单元的平均灰阶值，对子区域的平均灰阶值进行判断，当该平均灰阶值大于预设灰阶阈值时，则根据该子区域的平均灰阶值确定其平均灰阶值对应的 灰阶阈值区间，由于大视角色偏现场主要是由高灰阶值的像素信号引起，因此当该子区域的原像素单元的平均灰阶值低于预设灰阶阈值时，则不对该子区域中的原像素单元的伽马值进行重置，节省了计算时间和计算步骤。例如，本实施例中的预设灰阶阈值可以设置为180，当子区域中的原像素单元的平均灰阶值低于180，则不对该子区域的该原像素单元的伽马值进行调整。
具体的，每个子区域包括三种原像素单元，即每种原像素单元均具有该原像素单元对应的伽马值，对每个子区域的三种原像素单元进行平均灰阶值计算，将三种原像素单元进行平均灰阶值均与预设灰阶阈值进行对比。
在一个实施例中，选择平均灰阶值高于预设灰阶阈值的原像素单元进行灰阶阈值区间确定以调整其对应的伽马值。计算电路30获取子区域的平均灰阶值所对应的灰阶阈值区间，并在该子区域中计算灰阶值处于该灰阶阈值区间的原像素单元的总量，并计算该处于该灰阶阈值区间的原像素单元的总量占该子区域中所有原像素单元总量的比例。控制电路40获取灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值，根据该比值与预设的伽马值转换关系，将对应的子区域中的原像素单元的伽马值进行重置。
在一个实施例中，该预设的伽马值转换关系可以根据用户需要设置，例如，该预设的伽马值转换关系可以为：预先设置灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值对应的伽马值，或者子区域中原像素单元的平均灰阶值对应的伽马值，伽马值还可以为某种线性关系，例如，子区域中原像素单元的平均灰阶值与对应的伽马值呈预设的线性关系或者非线性关系。
在一个实施例中，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值为60％，当灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于60％，则调整该子区域中该原像素单元的伽马值，具体的，该调整过程为降低该子区域中该原像素单元的原始伽马值，让显示面板的大视角亮度接近正视角亮度，一般正视角画质最佳信号对应的亮度变化的伽马值为2.2，大视角的伽马值降低可以增加该子区域中多数像素信号对于亮度变化的线性度，从而减小大视角容易发生的色偏现象。
图11为本申请的一个实施例提供的子区域中的绿色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图。
本实施例中的驱动芯片为8位驱动芯片，其灰阶值为0至255，如图11所示，各区块n中的Ave_Bn表示标号为n的子区域中的绿色像素单元的在该子区域的平均灰阶值，各区块n中的Number of Ave_Gn±X表示：根据标号为n的子区域中的绿色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Gn±X内的个数占该子区域原像素单元总量的比值大于或等于Y％，可选的，Y＝60％。
具体的，不同的子区域的灰阶值阈值区间Ave_Gn±X内的像素数目占该区间总像素数目比例当大于Y％，可选的，Y为60，则更改该子区域的伽马信号，使该子区域的正视角伽马等校数值变小,让大视角亮度对应信号变化接近伽马的亮度变化，可选的，伽马<2.4。
在一个实施例中，正视角伽马值的变化由180到255的灰阶度对应为2.2变化到1.85，可选的，正视角画质最佳信号对应亮度变化伽马值为2.2,大视角伽马信号下降可以减小该子区域中的多数画素连续信号对于亮度变化的差异性。
如图11所示，驱动芯片为8位驱动芯片时，当子区域n中的绿色像素单元在该子区域的平均灰阶值在185到195之间,则统计该子区域的在平均灰阶值正负10范围内的像素数目占该区间总像素数目比例，当该比例大于60％，该区间伽马调整由2.2往下修正为2.15，伽马信号向下修正，相应大视角伽马等效变化也变小，使得该区间的大多数Green子像素的亮度变化较为线性，以此类推，子区域n中的灰阶平均值区间对应不同的伽马值变化。
图12为本申请实施例提供的子区域中的红色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图，本实施例中的驱动芯片为8位驱动芯片，其灰阶值为0至255，如图12所示，各区块n中的Ave_Rn表示标号为n的子区域中的红色像素单元的在该子区域的平均灰阶值，各区块n中的Number of Ave_Rn±X表示：根据标号为n的子区域中的红色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Rn±X内的个数占该子区域原像素单元总量的比值大于或等于Y％，可选的，Y＝60％。
当标号为n的子区域中的红色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Rn±X内的个数占该子区域红色像素单元总量的比值大于Y％时，根据如图12中的子区域中的红色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图调整该子区域的红色像素单元的伽马数值，使伽马数值变小，减少大视角容易发生的色偏现象，可选的，正视角伽马值的变化量Z为0.5。
图13为本申请实施例提供的子区域中的蓝色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图，本实施例中的驱动芯片为8位驱动芯片，其灰阶值为0至255，如图11所示，各区块n中的Ave_Bn表示标号为n的子区域中的蓝色像素单元的在该子区域的平均灰阶值，各区块n中的Number of Ave_Bn±X表示：根据标号为n的子区域中的蓝色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Bn±X内的个数占该子区域原像素单元总量的比值大于或等于Y％，可选的，Y＝60％。当标号为n的子区域中的蓝色像素单元在该子区域的平均灰阶值确定的灰阶值阈值区间Ave_Rn±X内的个数占该子区域蓝色像素单元总量的比值大于Y％时，根据如图13中的子区域中的蓝色像素单元的平均灰阶值、对应的阈值区间以及对应的正视角伽马值的关系图调整该子区 域的蓝色像素单元的伽马数值，使伽马数值变小，减少大视角容易发生的色偏现象，可选的，正视角伽马值的变化量Z为0.5。
图6为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图。
如图6所示，所述统计电路10包括：
第一统计电路101，设置为检测所述子区域中每个所述原像素单元的灰阶值；
第二统计电路102，设置为根据所述子区域中的所述原像素单元的总数以及每个所述原像素单元的灰阶值生成所述平均灰阶值。
在一个实施例中，第一统计电路101将显示面板划分为n个子区域后，对每个子区域中的原像素单元的灰阶值进行检测，原像素单元分为红色像素单元、绿色像素单元以及蓝色像素单元三种，即对每种原像素单元的灰阶值进行检测，并统计每个子区域中的每种原像素单元的个数，第二统计电路102计算每个子区域中的每种原像素单元的平均灰阶值。
图7为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图。
如图7所示，所述区间设置电路20包括：
第一区间设置电路201，设置为设置所述灰阶阈值区间的第一灰阶阈值，所述第一灰阶阈值为所述平均灰阶值加上第一预设灰阶值；
第二区间设置电路202，设置为设置所述灰阶阈值区间的第二灰阶阈值，所述第二灰阶阈值为所述平均灰阶值减去第二预设灰阶值。
第一区间设置电路201和第二区间设置电路202分别根据每个子区域中的每种原像素单元的平均灰阶值设置对应的第一灰阶阈值和第二灰阶阈值，其中，第一灰阶阈值大于第二灰阶阈值，第一灰阶阈值与第二灰阶阈值设置为形成灰阶阈值区间，若子区域的平均灰阶值大于第二灰阶阈值，同时又小于第一灰阶阈值，则该子区域的平均灰阶阈值位于该灰阶阈值区间内。
在一个实施例中，该第一灰阶阈值为平均灰阶值加上第一预设灰阶值，该第二灰阶阈值为平均灰阶值减去第二预设灰阶值，具体的，该第一预设灰阶值与该第二预设灰阶值可以根据用户需要进行设置。
在一个实施例中，第一预设灰阶值等于第二预设灰阶值。
图8为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图。
如图8所示，所述控制电路40包括：
比值判断电路401，设置为判断所述比值是否大于预设比值阈值；
伽马值设置电路402，设置为在所述比值大于所述预设比值阈值时，将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值，在所述比值小于或者等于预设比值阈值时，保持所述子区域中的原像素单元的伽马值不变。
在一个实施例中，比值判断电路401判断灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值是否大于预设比值阈值，可选的，该预设比值阈值为60％，当灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值，伽马值设置电路402将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值。当灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值小于或者等于预设比值阈值时，则保持所述子区域中的原像素单元的伽马值不变，即不对该子区域中的原像素单元的原伽马值进行校正。
在一个实施例中，本实施例中的预设的伽马值转换关系包括，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值时，子区域的原像素单元的平均灰阶值与预设的伽马值呈线性关系，具体的，平均灰阶值由180增加到255，对应的由2.2降低到1.85，设伽马值为Y，平均灰阶值为X，则有Y＝-(0.35/75)X+3.04，其中，X大于或等于180，且X小于或等于255。在一个实施例中，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值时，该子区域的伽马值由2.2向下调整，相应大视角伽马值等效变化也变小，使得该子区域的大多数原像素单元的亮度变化较为线性。
图9为本申请的另一个实施例提供的显示面板的驱动装置的结构示意图。
如图9所示，所述驱动装置还包括：空间滤波电路50，设置为对所述子区域的伽马值进行空间滤波。
在一个实施例中，显示面板划分的n个子区域中的灰阶值可能差异情况各不相同，各个子区域中的对伽马值进行校正的补偿信号也各不相同，因此，各个子区域的显示画面随着灰阶值变化的趋势也不相同，可能导致各个子区域的之间的亮度和灰阶值差异使得该子区域与相邻子区域之间产生不平滑过渡的边界现象。
在一个实施例中，空间滤波电路50对校正后的所述子区域中的原像素单元的伽马值进行空间滤波，具体的，该校正后的所述子区域中的原像素单元即为，灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值大于预设比值阈值，该子区域中的原像素单元的伽马值进行了重置操作，则对该子区域进行空间滤波，空间滤波可以采用滤波处理的影像增强方法对图像进行处理，即在图像空间几何变量域上直接修改、抑制图像数据并削减噪声的滤波，例如，通过低通滤波使得图像平滑，采用高通滤波使得图像变的锐化。
在一个实施例中，所述对所述子区域的伽马值进行低通滤波处理，包括：
根据所述子区域的伽马值以及与所述子区域相邻的子区域的伽马值对所述子区域进行低通滤波处理。
图10为本实施例中对显示面板划分为多个子区域的示意图。
如图10所示，空间滤波电路50对坐标为(x，y)的子区域进行低通滤波，其中，x和y均为大于1的整数，F(x,y)为坐标为(x，y)的子区域的伽马值，与坐标为(x，y)的子区域相邻的8个为(x，y)的子区域的伽马值分别为F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)，其中，F(x-1,y-1)为坐标(x-1,y-1)的子区域的伽马值，F(x-1,y)为坐标(x-1,y)的子区域的伽马值，F(x-1,y+1)为坐标(x-1,y+1)的子区域的伽马值，F(x,y-1)为坐标(x,y-1)的子区域的伽马值，F(x,y+1)为坐标(x,y+1)的子区域的伽马值，F(x+1,y-1)为坐标(x+1,y-1)的子区域的伽马值，F(x+1,y)为坐标(x+1,y)的子区域的伽马值，F(x+1,y+1)为坐标(x+1,y+1)的子区域的伽马值。
可选的，F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)的权重分别为w1、w2、w3、w4、w5、w6、w7、w8以及w9，则空间滤波电路50对坐标为(x，y)的子区域的伽马值进行空间滤波后的伽马值为g(x,y)＝F(x-1,y-1)*w1+F(x-1,y)*w2+F(x-1,y+1)*w3+F(x,y-1)*w4+F(x,y)*w5+F(x,y+1)*w6+F(x+1,y-1)*w7+F(x+1,y)*w8+F(x+1,y+1)w9。
可选的，F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)的权重可以根据现实面板的穿透率均匀性进行设置，其中，上述9个子区域的伽马值F(x-1,y-1)、F(x-1,y)、F(x-1,y+1)、F(x,y-1)、F(x,y)、F(x,y+1)、F(x+1,y-1)、F(x+1,y)以及F(x+1,y+1)的权重之和等于1，即w1+w2+w3+w4+w5+w6+w7+w8+w9＝1。具体的，该权重w1、w2、w3、w4、w5、w6、w7、w8以及w9可以为相同值，例如，w1、w2、w3、w4、w5、w6、w7以及w8可以均为1/8，可选的，权重w1、w2、w3、w4、w5、w6、w7、w8以及w9可以为不同值，用户可以根据需要对各个子区域的伽马值的权重进行调整，以使相邻子区域的变化不会太明显。
在一个实施例中，本实施例中提出了一种显示装置，包括：
显示面板；
以及驱动控制电路，所述驱动控制电路与所述显示面板电性连接，其中，所述驱动控制电路设置为执行所述显示面板的驱动方法；
所述显示面板的驱动方法包括：
将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，其中，n为大于1的整数；
当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；
根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
在一个实施例中，获取灰阶阈值区间的原像素单元的总量与该子区域中所有原像素单元总量的比值，根据该比值与预设的伽马值转换关系，将对应的子区域中的原像素单元的伽马值进行重置。
在一个实施例中，显示装置可以为任意类型的显示装置，例如LCD(Liquid Crystal Display，液晶显示装置)、OLED(Organic Electroluminesence Display，有机电激光显示)显示装置、QLED(Quantum Dot Light Emitting Diodes，量子点发光二极管)显示装置或曲面显示装置等。
在一个实施例中，显示面板包括由多行像素和多列像素组成的原像素单元的阵列。
在一个实施例中，驱动控制电路可以通过通用集成电路，例如CPU(Central Processing Unit，中央处理器)，或通过ASIC(Application Specific Integrated Circuit，专用集成电路)来实现。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所述仅为本申请的可选实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种显示面板的驱动方法，包括：
    将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，其中，n为大于1的整数；
    当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
    计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；以及
    根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
  2. 如权利要求1所述的驱动方法，其中，所述计算每个所述子区域中原像素单元的平均灰阶值，包括：
    检测所述子区域中每个所述原像素单元的灰阶值；
    根据所述子区域中的所述原像素单元的总数以及每个所述原像素单元的灰阶值生成所述平均灰阶值。
  3. 如权利要求1所述的驱动方法，其中，所述计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值，包括：
    获取所述子区域的平均灰阶值所对应的灰阶阈值区间，并计算所述子区域中灰阶值处于所述灰阶阈值区间的所述原像素单元的总量；
    获取在所述子区域中的所述原像素单元的总量；
    计算所述所述子区域中灰阶值处于所述灰阶阈值区间的所述原像素单元的总量与所述子区域中的所述原像素单元的总量的比值。
  4. 如权利要求1所述的驱动方法，其中，所述灰阶阈值区间包括第一灰阶阈值和第二灰阶阈值；
    所述第一灰阶阈值为所述平均灰阶值加上第一预设灰阶值；
    所述第二灰阶阈值为所述平均灰阶值减去第二预设灰阶值。
  5. 如权利要求4所述的驱动方法，其中，所述第一预设灰阶阈值等于所述第二预设灰阶阈值。
  6. 如权利要求1所述的驱动方法，其中，所述根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置，包括：
    判断所述比值是否大于预设比值阈值；
    若所述比值大于所述预设比值阈值，则将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值；
    若所述比值小于或者等于预设比值阈值，则保持所述子区域中的原像素单元的伽马值不变。
  7. 如权利要求6所述的驱动方法，其中，所述预设比值阈值为60％。
  8. 如权利要求1所述的驱动方法，其中，所述预设的伽马值转换关系包括：
    用户预先设置的所述灰阶阈值区间的原像素单元的总量与所述子区域中原像素单元的总量的比值对应的伽马值。
  9. 如权利要求8所述的驱动方法，其中，所述用户预先设置的伽马值与所述灰阶阈值区间的原像素单元的总量与所述子区域中原像素单元的总量的比值呈线性关系。
  10. 如权利要求1所述的驱动方法，其中，所述驱动方法还包括：
    对所述子区域的伽马值进行空间滤波。
  11. 如权利要求10所述的驱动方法，其中，所述对所述子区域的伽马值进行空间滤波包括：
    对所述子区域的伽马值进行低通滤波处理。
  12. 如权利要求11所述的驱动方法，其中，所述对所述子区域的伽马值进行低通滤波处理，包括：
    根据所述子区域的伽马值以及与所述子区域相邻的子区域的伽马值对所述子区域进行低通滤波处理。
  13. 一种显示面板的驱动装置，包括：
    统计电路，设置为将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，其中，n为大于1的整数；
    区间设置电路，设置为当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
    计算电路，设置为计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；以及
    控制电路，设置为根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
  14. 如权利要求13所述的驱动装置，其中，所述统计电路包括：
    第一统计电路，设置为检测所述子区域中每个所述原像素单元的灰阶值；
    第二统计电路，设置为根据所述子区域中的所述原像素单元的总数以及每个所述原像 素单元的灰阶值生成所述平均灰阶值。
  15. 如权利要求13所述的驱动装置，其中，所述区间设置电路包括：
    第一区间设置电路，设置为设置所述灰阶阈值区间的第一灰阶阈值，所述第一灰阶阈值为所述平均灰阶值加上第一预设灰阶值；
    第二区间设置电路，设置为设置所述灰阶阈值区间的第二灰阶阈值，所述第二灰阶阈值为所述平均灰阶值减去第二预设灰阶值。
  16. 如权利要求15所述的驱动装置，其中，所述第一预设灰阶阈值等于所述第二预设灰阶阈值。
  17. 如权利要求13所述的驱动装置，其中，所述控制电路包括：
    比值判断电路，设置为判断所述比值是否大于预设比值阈值；
    伽马值设置电路，设置为在所述比值大于所述预设比值阈值时，将所述子区域中的原像素单元的伽马值设置为与所述灰阶阈值区间对应的伽马值，在所述比值小于或者等于预设比值阈值时，保持所述子区域中的原像素单元的伽马值不变。
  18. 如权利要求13所述的驱动装置，其中，所述驱动装置还包括：
    空间滤波电路，设置为对所述子区域的伽马值进行空间滤波。
  19. 如权利要求18所述的驱动装置，其中，所述空间滤波电路还设置为：
    根据所述子区域的伽马值以及与所述子区域相邻的子区域的伽马值对所述子区域进行低通滤波处理。
  20. 一种显示装置，包括：
    显示面板；
    以及控驱动制电路，所述驱动控制电路与所述显示面板电性连接，其中，所述驱动控制电路设置为执行所述显示面板的驱动方法；
    所述显示面板的驱动方法包括：
    将所述显示面板划分为n个子区域，计算每个所述子区域中原像素单元的平均灰阶值，其中，n为大于1的整数；
    当所述平均灰阶值大于预设灰阶阈值时，根据所述子区域的平均灰阶值确定与所述子区域对应的灰阶阈值区间；
    计算所述灰阶阈值区间中的原像素单元总量与对应的子区域中包含的原像素单元总量的比值；以及
    根据所述比值以及预设的伽马值转换关系，将对应的所述子区域中的原像素单元的伽马值进行重置。
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