WO2018113049A1 - 一种显示面板的驱动方法及驱动装置 - Google Patents

一种显示面板的驱动方法及驱动装置 Download PDF

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Publication number
WO2018113049A1
WO2018113049A1 PCT/CN2017/070529 CN2017070529W WO2018113049A1 WO 2018113049 A1 WO2018113049 A1 WO 2018113049A1 CN 2017070529 W CN2017070529 W CN 2017070529W WO 2018113049 A1 WO2018113049 A1 WO 2018113049A1
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Prior art keywords
saturation
sub
backlight
coefficient
module
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PCT/CN2017/070529
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English (en)
French (fr)
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郭星灵
黄俊宏
谭小平
秦杰辉
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武汉华星光电技术有限公司
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Priority to US15/325,081 priority Critical patent/US10347210B2/en
Publication of WO2018113049A1 publication Critical patent/WO2018113049A1/zh

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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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • 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
    • G09G3/3406—Control of illumination source
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • 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
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a driving method and a driving device for a display panel.
  • an RGB display panel includes an array of pixel cells, and each pixel unit in the pixel cell array may include three sub-pixel units of R (Red, Red), G (Green, Green), and B (Blue).
  • each pixel unit in the pixel unit array may include a W (White, white) sub-pixel unit in addition to three sub-pixel units of R, G, and B, thereby forming an RGBW display panel.
  • W White, white
  • the size of the four sub-pixel units of R, G, B, and W is equal to the size of the six sub-pixel units R, G, and B in the original RGB display panel, that is, the unit area.
  • the area of the R, G, B, and W sub-pixel units in the RGBW display panel is 1/4, respectively, and the area of the R, G, and B sub-pixel units in the RGB display panel is 1/3, respectively, thereby making the RGBW display panel
  • the aperture ratio of the three sub-pixel units R, G, and B is 75% of that of the conventional RGB display panel.
  • the present invention provides a driving method and a driving device for a display panel, which can improve the brightness of a display panel including an RGBW sub-pixel unit when displaying a solid color screen.
  • a technical solution adopted by the present invention is to provide a driving method for a display panel, the driving method comprising: dividing a saturation interval of an original image frame to be displayed on a display panel into a plurality of sub-saturation intervals; Obtaining a saturation corresponding to each pixel in the original image frame; and counting the number of pixels in the original image frame falling within each sub-saturation interval according to the saturation corresponding to each pixel; Obtaining an original gain coefficient corresponding to the original image frame according to the number of pixels and the gain coefficient corresponding to each subsaturation interval; adjusting the first backlight control coefficient generated by the PWM unit according to the original gain coefficient; and adjusting the adjusted first backlight control coefficient and The second backlight control coefficient generated by the CABC unit is weighted and output to the backlight module for screen control; wherein the step of acquiring the saturation corresponding to each pixel in the original image frame includes:
  • R1, G1, and B1 are the red grayscale value, the green grayscale value, and the blue grayscale value in the three-color sub-pixel data of each pixel, respectively
  • Max(R1, G1, B1) is The maximum value of the red grayscale value R1, the green grayscale value G1, and the blue grayscale value B1
  • Min (R1, G1, B1) is a red grayscale value R1, a green grayscale value G1, and a blue grayscale value B1.
  • the step of weighting the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit and outputting to the backlight module for performing screen control includes: acquiring the adjusted first backlight control coefficient and the CABC unit The product of the second backlight control coefficient is used as the third backlight control coefficient; whether the third backlight control coefficient is less than 100%; if the third backlight coefficient is less than 100%, the output duty is the third backlight coefficient of the PWM signal to the backlight module If the third backlight factor is greater than or equal to 100%, the PWM signal with a duty ratio of 100% is output to the backlight module.
  • the step of acquiring the original gain coefficient corresponding to the original image frame according to the counted number of pixels and the gain coefficient corresponding to each sub-saturation interval includes: acquiring a gain coefficient corresponding to the sub-saturation interval where the number of pixels falls the most as the original gain coefficient.
  • the step of acquiring the original gain coefficient corresponding to the original image frame according to the number of pixels in the statistics and the gain coefficient corresponding to each sub-saturation interval includes: obtaining the weight corresponding to each sub-saturation interval according to the number of pixels falling in each sub-saturation interval The original gain coefficient is obtained according to the weight and gain coefficient corresponding to each sub-saturation interval.
  • another technical solution adopted by the present invention is to provide a driving method of a display panel, the driving method comprising: a saturation region of an original image frame to be displayed on a display panel Divided into multiple sub-saturation intervals; obtains the saturation corresponding to each pixel in the original image frame; and counts the number of pixels in the original image frame that fall within each sub-saturation interval according to the saturation corresponding to each pixel; The number of pixels and the gain coefficient corresponding to each sub-saturation interval obtain the original gain coefficient corresponding to the original image frame; adjust the first backlight control coefficient generated by the PWM unit according to the original gain coefficient; and generate the adjusted first backlight control coefficient and the CABC unit
  • the second backlight control coefficient is weighted and output to the backlight module for screen control.
  • the step of acquiring the saturation corresponding to each pixel in the original image frame includes:
  • R1, G1, and B1 are the red grayscale value, the green grayscale value, and the blue grayscale value in the three-color sub-pixel data of each pixel, respectively
  • Max(R1, G1, B1) is The maximum value of the red grayscale value R1, the green grayscale value G1, and the blue grayscale value B1
  • Min (R1, G1, B1) is a red grayscale value R1, a green grayscale value G1, and a blue grayscale value B1. The minimum value in .
  • the step of acquiring the original gain coefficient corresponding to the original image frame according to the counted number of pixels and the gain coefficient corresponding to each sub-saturation interval includes: acquiring a gain coefficient corresponding to the sub-saturation interval where the number of pixels falls the most as the original gain coefficient.
  • the step of acquiring the original gain coefficient corresponding to the original image frame according to the number of pixels in the statistics and the gain coefficient corresponding to each sub-saturation interval includes: obtaining the weight corresponding to each sub-saturation interval according to the number of pixels falling in each sub-saturation interval The original gain coefficient is obtained according to the weight and gain coefficient corresponding to each sub-saturation interval.
  • the step of weighting the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit and outputting to the backlight module for performing screen control includes: acquiring the adjusted first backlight control coefficient and the CABC unit The product of the second backlight control coefficient is used as the third backlight control coefficient; whether the third backlight control coefficient is less than 100%; if the third backlight coefficient is less than 100%, the output duty is the third backlight coefficient of the PWM signal to the backlight module If the third backlight factor is greater than or equal to 100%, the PWM signal with a duty ratio of 100% is output to the backlight module.
  • a driving device for a display panel comprising: a dividing module, configured to divide a saturation interval of an original image frame to be displayed on the display panel into a plurality of sub-saturation intervals; a first obtaining module, configured to acquire a saturation corresponding to each pixel in the original image frame; and a statistic module, connected to the dividing module and the first acquiring module, configured to acquire each pixel according to the first acquiring module
  • the saturation level of the point corresponds to the number of pixels in the original sub-saturation interval of the partitioning module in the original image frame; the second obtaining module is connected to the statistic module for counting the number of pixels and each sub-saturation according to the statistical module.
  • the gain coefficient corresponding to the interval is used to obtain the original gain coefficient corresponding to the original image frame;
  • the adjusting module is connected to the second acquiring module, and is configured to adjust the first backlight control coefficient generated by the PWM unit according to the original gain coefficient acquired by the second acquiring module; Connected to the adjustment module for adjusting the first backlight control coefficient of the adjustment module After the second backlight control coefficient generated by the weighting unit CABC output to a screen backlight control module.
  • the obtaining, by the first acquiring module, the saturation corresponding to each pixel in the original image frame includes: calculating a saturation corresponding to each pixel according to the following formula:
  • R1, G1, and B1 are the red grayscale value, the green grayscale value, and the blue grayscale value in the three-color sub-pixel data of each pixel, respectively
  • Max(R1, G1, B1) is The maximum value of the red grayscale value R1, the green grayscale value G1, and the blue grayscale value B1
  • Min (R1, G1, B1) is a red grayscale value R1, a green grayscale value G1, and a blue grayscale value B1. The minimum value in .
  • the obtaining, by the second obtaining module, the original gain coefficient corresponding to the original image frame according to the number of pixels in the statistics and the gain coefficient corresponding to each sub-saturation interval includes: obtaining, by the second acquiring module, the sub-saturation interval corresponding to the maximum number of pixels The gain factor is taken as the original gain factor.
  • the obtaining, by the second obtaining module, the original gain coefficient corresponding to the original image frame according to the number of pixels in the statistics and the gain coefficient corresponding to each sub-saturation interval includes: obtaining, by the second acquiring module, the number of pixels falling in each sub-saturation interval
  • the weight corresponding to each sub-saturation interval acquires the original gain coefficient according to the weight and gain coefficient corresponding to each sub-saturation interval.
  • the processing module adjusts the adjusted first backlight control coefficient and the second back generated by the CABC unit
  • the operation of outputting the light control coefficient to the backlight module for performing screen control includes: the processing module acquiring the product of the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit as the third backlight control coefficient; Whether the third backlight control coefficient is less than 100%; if the third backlight coefficient is less than 100%, the PWM signal whose duty ratio is the third backlight coefficient is output to the backlight module; if the third backlight coefficient is greater than or equal to 100%, the output duty ratio is 100% PWM signal to the backlight module.
  • the driving method and the driving device of the display panel of the present invention acquire the original gain coefficient corresponding to the original image frame by counting the saturation of the original image frame, and adjust the gain coefficient to the PWM unit.
  • the generated first backlight control coefficient is weighted by the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit, and then output to the backlight module for screen control.
  • the present invention can intelligently adjust the backlight brightness output by the backlight module according to the saturation of the original image frame, thereby improving the problem that the display panel including the RGBW sub-pixel unit is dark in brightness when displaying a solid color picture.
  • FIG. 1 is a flow chart showing a driving method of a display panel according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing a correspondence relationship between a gain coefficient and saturation in the embodiment
  • FIG 3 is a schematic structural view of a driving device of a display panel according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a driving method of a display panel according to an embodiment of the present invention. As shown in Figure 1, the method includes the steps of:
  • Step S101 dividing the saturation interval of the original image frame to be displayed on the display panel into multiple sub-saturated And degree interval.
  • the saturation interval of the original image frame is 0 to 1, for example, the saturation interval of 0 to 1 is divided into a plurality of, for example, eight sub-saturation intervals. Among them, the number of sub-saturation intervals is determined according to the actual situation.
  • Step S102 Acquire saturation corresponding to each pixel point in the original image frame.
  • step S102 the step of acquiring the saturation corresponding to each pixel in the original image frame includes: acquiring three-color sub-pixel data of each pixel in the original image frame; acquiring each pixel according to the three-color sub-pixel data of each pixel Corresponding saturation.
  • R1, G1, and B1 are the red grayscale value, the green grayscale value, and the blue grayscale value in the three-color sub-pixel data of each pixel, respectively
  • Max(R1, G1, B1) is The maximum value of the red grayscale value R1, the green grayscale value G1, and the blue grayscale value B1
  • Min (R1, G1, B1) is a red grayscale value R1, a green grayscale value G1, and a blue grayscale value B1. The minimum value in .
  • Step S103 The number of pixels falling within each sub-saturation interval in the original image frame is counted according to the saturation corresponding to each pixel point.
  • the saturation interval of the original image frame is divided into eight sub-saturation intervals.
  • the eight sub-saturation intervals are respectively recorded as the first sub-saturation interval S1 and the second sub-saturation interval S2. . ., the eighth subsaturation interval S8.
  • Dividing each pixel into eight different subsaturation intervals according to the subsaturation interval in which the saturation of each pixel in the original image frame falls, and the number of pixels falling into eight different subsaturation intervals Perform statistics.
  • the total number of pixels is recorded as m
  • the number of pixels falling in the first sub-saturation interval S1 is recorded as n1
  • the number of pixels falling in the second sub-saturation interval S2 is recorded as n2, .. .... and so on
  • Step S104 Acquire an original gain coefficient corresponding to the original image frame according to the counted number of pixels and the gain coefficient corresponding to each sub-saturation interval.
  • step S104 the step of acquiring the original gain coefficient corresponding to the original image frame according to the counted number of pixels and the gain coefficient corresponding to each sub-saturation interval includes: acquiring a gain coefficient corresponding to the sub-saturation interval where the number of pixels falls the most as the original Gain factor.
  • FIG. 2 is a schematic diagram of the correspondence between the gain coefficient and the saturation in the embodiment of the present invention.
  • the horizontal axis Saturation represents saturation
  • the vertical axis Gain represents a gain coefficient.
  • the gain coefficient corresponding to the first sub-saturation interval S1 is the first gain coefficient K1
  • the gain coefficient corresponding to the second sub-saturation interval S2 is the second gain coefficient K2, ..., and so on, the eighth sub- The gain coefficient corresponding to the saturation interval S8 is the eighth gain coefficient K8.
  • the higher the value of the saturation in the subsaturation interval the higher the gain coefficient corresponding to the subsaturation interval. That is, the second gain coefficient K2 is greater than the first gain coefficient K1, the third gain coefficient K3 is greater than the second gain coefficient K2, ..., and so on, the eighth gain coefficient K8 is greater than the seventh gain coefficient K7 .
  • the value of the saturation interval when the value of the saturation interval is 0 to 1, the value of S1 is 0 to 1/8, and the value of S2 is 1/8 to 2/8, ..., the value of S8. It is 7/8 ⁇ 1.
  • the value of the gain coefficient is 0 to 2
  • the value of K1 is 1/4
  • the value of K2 is 2/4
  • ... and the value of K8 is 2.
  • the original gain coefficient is the second gain coefficient K2.
  • the step of acquiring the original gain coefficient corresponding to the original image frame according to the number of pixels in the statistics and the gain coefficient corresponding to each sub-saturation interval may also include: acquiring each sub-sub-number according to the number of pixels falling in each sub-saturation interval The weight corresponding to the saturation interval; the original gain coefficient is obtained according to the weight and gain coefficient corresponding to each sub-saturation interval.
  • the weight corresponding to each sub-saturation interval is a ratio of the number of pixels falling within each sub-saturation interval to the total number of pixels.
  • the original gain factor is calculated according to the following formula:
  • K0 n1/m*K1+n2/m*K2+...+n8/m*K8
  • K0 is the original gain coefficient
  • n1, n2, ..., n8 are the number of pixels falling into the first sub-saturation interval S1, the second sub-saturation interval S2, ... the eighth sub-saturation interval S8, respectively
  • m is the total Number of pixels
  • K1, K2, ..., K8 are gain coefficients corresponding to the first sub-saturation interval S1, the second sub-saturation interval S2, ..., the eighth sub-saturation interval S8, respectively.
  • Step S105 Adjust the first backlight control coefficient generated by the PWM unit according to the original gain coefficient.
  • step S105 the first backlight control coefficient is used to control the PWM unit to generate a PWM signal whose duty ratio is the first backlight control coefficient.
  • the adjusted first backlight control coefficient satisfies the following formula:
  • PWM1 is the adjusted first backlight control coefficient
  • PWM0 is the first backlight control coefficient before adjustment
  • K0 is the original gain coefficient
  • the value of the adjusted first backlight control coefficient PWM1 may be greater than 1.
  • Step S106 weighting the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit, and outputting the result to the backlight module for screen control.
  • step S106 the step of weighting the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit and outputting to the backlight module for performing screen control includes: acquiring the adjusted first backlight control coefficient and CABC The product of the second backlight control coefficient generated by the unit is used as a third backlight control coefficient; determining whether the third backlight control coefficient is less than 100%; if the third backlight coefficient is less than 100%, outputting a PWM signal having a duty ratio of the third backlight coefficient to The backlight module; if the third backlight factor is greater than 100%, output a PWM signal with a duty cycle of 100% to the backlight module.
  • the third backlight control coefficient satisfies the following formula:
  • the PWM1 is the adjusted first backlight control coefficient
  • the PWM2 is the second backlight control coefficient generated by the CABC unit
  • the PWM3 is the third backlight control coefficient outputted to the backlight module.
  • the second backlight control coefficient is used to control the generation of the CABC unit.
  • the duty cycle is a PWM signal of the second backlight control coefficient
  • the third backlight control coefficient is used to control the backlight module to generate a PWM signal with a duty ratio of a third backlight control coefficient.
  • the value of the adjusted first backlight control coefficient PWM1 may be greater than 1
  • the value of the third backlight control coefficient PWM3 may also be greater than or equal to 1
  • the output duty ratio is The 100% PWM signal is used to indicate that the backlight brightness of the backlight module output is kept at maximum backlight brightness.
  • the driving device includes a dividing module 31 , a first acquiring module 32 , a statistic module 33 , a second acquiring module 34 , an adjusting module 35 , and a processing module 36 .
  • the dividing module 31 is configured to divide the saturation interval of the original image frame to be displayed on the display panel into a plurality of sub-saturation intervals.
  • the first obtaining module 32 is configured to acquire the saturation corresponding to each pixel point in the original image frame. Specifically, the saturation corresponding to each pixel is calculated according to the following formula:
  • R1, G1, and B1 are the red grayscale value, the green grayscale value, and the blue grayscale value in the three-color sub-pixel data of each pixel, respectively
  • Max(R1, G1, B1) is The maximum value of the red grayscale value R1, the green grayscale value G1, and the blue grayscale value B1
  • Min (R1, G1, B1) is a red grayscale value R1, a green grayscale value G1, and a blue grayscale value B1. The minimum value in .
  • the statistic module 33 is connected to the partitioning module 31 and the first obtaining module 32, and is configured to fall within each sub-saturation interval divided by the dividing module 31 according to the saturation statistic corresponding to each pixel point acquired by the first acquiring module 32. The number of pixels.
  • the second obtaining module 34 is connected to the statistic module 33, and is configured to obtain the original gain coefficient corresponding to the original image frame according to the number of pixels counted by the statistic module 33 and the gain coefficient corresponding to each sub-saturation interval.
  • the obtaining, by the second obtaining module 34, the original gain coefficient corresponding to the original image frame according to the number of pixels and the gain coefficient corresponding to each sub-saturation interval includes: the second obtaining module 34 obtains the maximum number of pixels.
  • the gain coefficient corresponding to the subsaturation interval is taken as the original gain coefficient.
  • the second acquisition module 34 is based on the number of pixels counted and the sub-saturation intervals.
  • the operation of acquiring the original gain coefficient corresponding to the original image frame by the corresponding gain coefficient includes: the second obtaining module 34 acquires the weight corresponding to each sub-saturation interval according to the number of pixels falling in each sub-saturation interval, and corresponding to each sub-saturation interval The weight and gain coefficients are used to obtain the original gain factor.
  • the weight corresponding to each sub-saturation interval is a ratio of the number of pixels falling within each sub-saturation interval to the total number of pixels, and the original gain coefficient is the sum of the sum of the weights of the sub-saturation intervals and the product of the gain coefficients.
  • the adjustment module 35 is connected to the second acquisition module 34 for adjusting the first backlight control coefficient generated by the PWM unit according to the original gain coefficient acquired by the second acquisition module 34.
  • the processing module 36 is connected to the adjustment module 35, and is configured to weight the first backlight control coefficient adjusted by the adjustment module 35 and the second backlight control coefficient generated by the CABC unit, and output the image to the backlight module for screen control.
  • the processing module 36 weights the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit, and outputs the image to the backlight module for performing screen control.
  • the processing module 36 obtains the adjusted first.
  • the product of the backlight control coefficient and the second backlight control coefficient generated by the CABC unit is used as the third backlight control coefficient; determining whether the third backlight control coefficient is less than 100%; if the third backlight coefficient is less than 100%, the output duty ratio is the third backlight
  • the PWM signal of the coefficient is to the backlight module; if the third backlight coefficient is greater than or equal to 100%, the PWM signal with a duty ratio of 100% is output to the backlight module.
  • the driving method and the driving device of the display panel of the present invention acquire the original gain coefficient corresponding to the original image frame by counting the saturation of the original image frame, and adjust the gain coefficient to the PWM unit.
  • the generated first backlight control coefficient is weighted by the adjusted first backlight control coefficient and the second backlight control coefficient generated by the CABC unit, and then output to the backlight module for screen control.
  • the present invention can intelligently adjust the backlight brightness output by the backlight module according to the saturation of the original image frame, thereby improving the problem that the display panel including the RGBW sub-pixel unit is dark in brightness when displaying a solid color picture.

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Abstract

一种显示面板的驱动方法及驱动装置。该驱动方法包括：将显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间(S101)；根据各像素点对应的饱和度统计原始图像帧中落入各子饱和度区间内的像素数量(S103)；根据统计的像素数量和各子饱和度区间对应的增益系数获取原始增益系数(S104)；根据原始增益系数调整PWM单元产生的第一背光控制系数(S105)；将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块(S106)。通过上述方式，能够根据原始图像帧的饱和度智能调节背光亮度大小，从而改善RGBW显示面板的纯色偏暗的问题。

Description

一种显示面板的驱动方法及驱动装置 【技术领域】
本发明涉及液晶显示领域，特别涉及一种显示面板的驱动方法及驱动装置。
【背景技术】
目前，RGB显示面板上包括像素单元阵列，像素单元阵列中的每个像素单元可包括R(Red，红色)、G(Green，绿色)、B(Blue，蓝色)三种子像素单元。随着技术的发展，像素单元阵列中的每个像素单元除了包括R、G、B三种子像素单元外，还可包括W(White，白色)子像素单元，从而形成了RGBW显示面板。通过加入W子像素，可以使像素单元具备高穿透率，从而能够节省显示面板的功耗。然而，由于RGBW显示面板引入W像素单元，而R、G、B、W四个子像素单元的大小与原来RGB显示面板中R、G、B六个子像素单元的大小相等，也就是说，单位面积内，RGBW显示面板中R、G、B、W子像素单元的面积分别为1/4，而RGB显示面板中R、G、B子像素单元的面积分别为1/3，从而使得RGBW显示面板中R、G、B三个子像素单元的开口率为常规RGB显示面板的75％，在显示纯色画面时，RGBW显示面板的整体亮度会低于RGB显示面板，显示画面偏暗。
【发明内容】
本发明提供一种显示面板的驱动方法及驱动装置，能够改善包括RGBW子像素单元的显示面板在显示纯色画面时亮度偏暗的问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示面板的驱动方法，该驱动方法包括：将显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间；获取原始图像帧中各像素点对应的饱和度；根据各像素点对应的饱和度统计原始图像帧中落入各子饱和度区间内的像素数量；根 据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数；根据原始增益系数调整PWM单元产生的第一背光控制系数；将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制；其中，获取原始图像帧中各像素点对应的饱和度的步骤包括：
各像素点对应的饱和度根据如下公式进行计算：
Figure PCTCN2017070529-appb-000001
其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值；
其中，将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的步骤包括：获取调整后的第一背光控制系数与CABC单元产生的第二背光控制系数的乘积作为第三背光控制系数；判断第三背光控制系数是否小于100％；若第三背光系数小于100％，输出占空比为第三背光系数的PWM信号至背光灯模块；若第三背光系数大于等于100％，输出占空比为100％的PWM信号至背光灯模块。
其中，根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的步骤包括：获取像素数量落入最多的子饱和度区间对应的增益系数作为原始增益系数。
其中，根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的步骤包括：根据落入各子饱和度区间的像素数量获取各子饱和度区间对应的权重；根据各子饱和度区间对应的权重和增益系数获取原始增益系数。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种显示面板的驱动方法，该驱动方法包括：将显示面板待显示的原始图像帧的饱和度区 间划分为多个子饱和度区间；获取原始图像帧中各像素点对应的饱和度；根据各像素点对应的饱和度统计原始图像帧中落入各子饱和度区间内的像素数量；根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数；根据原始增益系数调整PWM单元产生的第一背光控制系数；将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。
其中，获取原始图像帧中各像素点对应的饱和度的步骤包括：
各像素点对应的饱和度根据如下公式进行计算：
Figure PCTCN2017070529-appb-000002
其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值。
其中，根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的步骤包括：获取像素数量落入最多的子饱和度区间对应的增益系数作为原始增益系数。
其中，根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的步骤包括：根据落入各子饱和度区间的像素数量获取各子饱和度区间对应的权重；根据各子饱和度区间对应的权重和增益系数获取原始增益系数。
其中，将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的步骤包括：获取调整后的第一背光控制系数与CABC单元产生的第二背光控制系数的乘积作为第三背光控制系数；判断第三背光控制系数是否小于100％；若第三背光系数小于100％，输出占空比为第三背光系数的PWM信号至背光灯模块；若第三背光系数大于等于100％，输出占空比为100％的PWM信号至背光灯模块。
为解决上述技术问题，本发明采用的再一个技术方案是：提供一种显示面板的驱动装置，该驱动装置包括：划分模块，用于将显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间；第一获取模块，用于获取原始图像帧中各像素点对应的饱和度；统计模块，与划分模块和第一获取模块连接，用于根据第一获取模块获取的各像素点对应的饱和度统计原始图像帧中落入划分模块划分的各子饱和度区间内的像素数量；第二获取模块，与统计模块连接，用于根据统计模块统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数；调整模块，与第二获取模块连接，用于根据第二获取模块获取的原始增益系数调整PWM单元产生的第一背光控制系数；处理模块，与调整模块连接，用于将调整模块调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。
其中，第一获取模块获取原始图像帧中各像素点对应的饱和度的操作包括：各像素点对应的饱和度根据如下公式进行计算：
Figure PCTCN2017070529-appb-000003
其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值。
其中，第二获取模块根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的操作包括：第二获取模块获取像素数量落入最多的子饱和度区间对应的增益系数作为原始增益系数。
其中，第二获取模块根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的操作包括：第二获取模块根据落入各子饱和度区间的像素数量获取各子饱和度区间对应的权重，根据各子饱和度区间对应的权重和增益系数获取原始增益系数。
其中，处理模块将调整后的第一背光控制系数与CABC单元产生的第二背 光控制系数进行加权后输出给背光灯模块进行画面控制的操作包括：处理模块获取调整后的第一背光控制系数与CABC单元产生的第二背光控制系数的乘积作为第三背光控制系数；判断第三背光控制系数是否小于100％；若第三背光系数小于100％，输出占空比为第三背光系数的PWM信号至背光灯模块；若第三背光系数大于等于100％，输出占空比为100％的PWM信号至背光灯模块。
本发明的有益效果是：区别于现有技术，本发明的显示面板的驱动方法及驱动装置通过统计原始图像帧的饱和度来获取原始图像帧对应的原始增益系数，将该增益系数调整PWM单元产生的第一背光控制系数，将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。通过上述方式，本发明能够根据原始图像帧的饱和度智能调节背光灯模块输出的背光亮度，从而改善包括RGBW子像素单元的显示面板在显示纯色画面时亮度偏暗的问题。
【附图说明】
图1是本发明实施例的显示面板的驱动方法的流程图；
图2是本实施例中增益系数与饱和度的对应关系的示意图；
图3是本发明实施例的显示面板的驱动装置的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
图1是本发明实施例的显示面板的驱动方法的流程图。如图1所示，该方法包括步骤：
步骤S101：将显示面板待显示的原始图像帧的饱和度区间划分为多个子饱 和度区间。
在步骤S101中，以原始图像帧的饱和度区间为0～1为例来说，将0～1的饱和度区间划分为多个例如8个子饱和度区间。其中，子饱和度区间的数量根据实际情况进行确定。
步骤S102：获取原始图像帧中各像素点对应的饱和度。
在步骤S102中，获取原始图像帧中各像素点对应的饱和度的步骤包括：获取原始图像帧中各像素点的三色子像素数据；根据各像素点的三色子像素数据获取各像素点对应的饱和度。
其中，各像素点对应的饱和度根据如下公式进行计算：
Figure PCTCN2017070529-appb-000004
其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值。
步骤S103：根据各像素点对应的饱和度统计原始图像帧中的落入各子饱和度区间内的像素数量。
在步骤S103中，以原始图像帧的饱和度区间划分为8个子饱和度区间为例来说，8个子饱和度区间分别记为第一子饱和度区间S1、第二子饱和度区间S2，......，第八子饱和度区间S8。根据原始图像帧中各像素点的饱和度落入的子饱和度区间将各像素点划分至八个不同的子饱和度区间，并对落入八个不同的子饱和度区间的像素点的数量进行统计。
在本实施例中，将像素点的总数量记为m，落入第一子饱和度区间S1的像素数量记为n1，落入第二子饱和度区间S2的像素数量记为n2，......依此类推，落入第八子饱和度区间S8的像素数量记为n8，其中，m＝n1+n2+...+n8。
步骤S104：根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数。
在步骤S104中，根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的步骤包括：获取像素数量落入最多的子饱和度区间对应的增益系数作为原始增益系数。
请一并参考图2，图2是本发明实施例中增益系数与饱和度的对应关系的示意图。如图2所示，横轴Saturation表示饱和度，纵轴Gain表示增益系数。
第一子饱和度区间S1对应的增益系数为第一增益系数K1，第二子饱和度区间S2对应的增益系数为第二增益系数K2，......，依此类推，第八子饱和度区间S8对应的增益系数为第八增益系数K8。
如图2所示，子饱和度区间内的饱和度的值越高，子饱和度区间对应的增益系数越高。也就是说，第二增益系数K2大于第一增益系数K1，第三增益系数K3大于第二增益系数K2，......，依此类推，第八增益系数K8大于第七增益系数K7。
其中，当饱和度区间的取值为0～1时，S1的取值为0～1/8，S2的取值为1/8～2/8，......，S8的取值为7/8～1。当增益系数的取值为0～2时，K1的取值为1/4、K2的取值为2/4，......，K8的取值为2。
在本实施例中，举例来说，假设落入第二子饱和度区间S2的像素数量n2最多，则原始增益系数为第二增益系数K2。
在其它实施例中，根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的步骤也可以包括：根据落入各子饱和度区间的像素数量获取各子饱和度区间对应的权重；根据各子饱和度区间对应的权重和增益系数获取原始增益系数。其中，各子饱和度区间对应的权重为落入各子饱和度区间的像素数量和总像素数量的比值。
具体来说，原始增益系数根据如下公式进行计算：
K0＝n1/m*K1+n2/m*K2+...+n8/m*K8
其中，K0为原始增益系数，n1、n2、...n8分别为落入第一子饱和区间S1、第二子饱和区间S2、...第八子饱和区间S8的像素数量，m为总的像素数量， K1、K2、...K8分别为第一子饱和区间S1、第二子饱和区间S2、...第八子饱和区间S8对应的增益系数。
步骤S105：根据原始增益系数调整PWM单元产生的第一背光控制系数。
在步骤S105中，第一背光控制系数用于控制PWM单元产生占空比为第一背光控制系数的PWM信号。
本领域的技术人员可以理解，当第一背光控制系数为1时，其对应于PWM单元不存在的情况。
在本实施例中，调整后的第一背光控制系数满足如下公式：
PWM1＝PWM0*K0
其中，PWM1为调整后的第一背光控制系数，PWM0为调整前的第一背光控制系数，K0为原始增益系数。
本领域的技术人员可以理解，由于原始增益系数K0的取值在0～2之间，从而使得调整后的第一背光控制系数PWM1的取值会出现大于1的情况。
步骤S106：将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。
在步骤S106中，将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的步骤包括：获取调整后的第一背光控制系数与CABC单元产生的第二背光控制系数的乘积作为第三背光控制系数；判断第三背光控制系数是否小于100％；若第三背光系数小于100％，输出占空比为第三背光系数的PWM信号至背光灯模块；若第三背光系数大于100％，输出占空比为100％的PWM信号至背光灯模块。
也就是说，第三背光控制系数满足如下公式：
PWM3＝PWM1*PWM2
其中，PWM1为调整后的第一背光控制系数，PWM2为CABC单元产生的第二背光控制系数，PWM3为输出至背光灯模块的第三背光控制系数。
本领域的技术人员可以理解，第二背光控制系数用于控制CABC单元产生 占空比为第二背光控制系数的PWM信号，第三背光控制系数用于控制背光灯模块产生占空比为第三背光控制系数的PWM信号。另外，由于调整后的第一背光控制系数PWM1的取值会出现大于1的情况，从而使得第三背光控制系数PWM3的取值也会出现大于等于1的情况，此时，输出占空比为100％的PWM信号以指示背光灯模块输出的背光亮度保持为最大的背光亮度。
图3是本发明实施例的显示面板的驱动装置的结构示意图。如图3所示，该驱动装置包括划分模块31、第一获取模块32、统计模块33、第二获取模块34、调整模块35和处理模块36。
划分模块31用于将显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间。
第一获取模块32用于获取原始图像帧中各像素点对应的饱和度。具体来说，各像素点对应的饱和度根据如下公式进行计算：
Figure PCTCN2017070529-appb-000005
其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值。
统计模块33与划分模块31和第一获取模块32连接，用于根据第一获取模块32获取的各像素点对应的饱和度统计原始图像帧中落入划分模块31划分的各子饱和度区间内的像素数量。
第二获取模块34与统计模块33连接，用于根据统计模块33统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数。
在本实施例中，第二获取模块34根据统计的像素数量和各子饱和度区间对应的增益系数获取原始图像帧对应的原始增益系数的操作包括：第二获取模块34获取像素数量落入最多的子饱和度区间对应的增益系数作为原始增益系数。
在其它实施例中，第二获取模块34根据统计的像素数量和各子饱和度区间 对应的增益系数获取原始图像帧对应的原始增益系数的操作包括：第二获取模块34根据落入各子饱和度区间的像素数量获取各子饱和度区间对应的权重，根据各子饱和度区间对应的权重和增益系数获取原始增益系数。其中，各子饱和度区间对应的权重为落入各子饱和度区间的像素数量和总像素数量的比值，原始增益系数为各子饱和度区间的权值和增益系数的乘积的累加之和。
调整模块35与第二获取模块34连接，用于根据所述第二获取模块34获取的所述原始增益系数调整PWM单元产生的第一背光控制系数。
处理模块36与调整模块35连接，用于将调整模块35调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。
具体来说，处理模块36将调整后的第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的操作包括：处理模块36获取调整后的第一背光控制系数与CABC单元产生的第二背光控制系数的乘积作为第三背光控制系数；判断第三背光控制系数是否小于100％；若第三背光系数小于100％，输出占空比为第三背光系数的PWM信号至背光灯模块；若第三背光系数大于等于100％，输出占空比为100％的PWM信号至背光灯模块。
本发明的有益效果是：区别于现有技术，本发明的显示面板的驱动方法及驱动装置通过统计原始图像帧的饱和度来获取原始图像帧对应的原始增益系数，将该增益系数调整PWM单元产生的第一背光控制系数，将调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。通过上述方式，本发明能够根据原始图像帧的饱和度智能调节背光灯模块输出的背光亮度，从而改善包括RGBW子像素单元的显示面板在显示纯色画面时亮度偏暗的问题。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接 运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (13)

  1. 一种显示面板的驱动方法，其中，所述驱动方法包括：
    将所述显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间；
    获取所述原始图像帧中各像素点对应的饱和度；
    根据各像素点对应的所述饱和度统计所述原始图像帧中落入各所述子饱和度区间内的像素数量；
    根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数；
    根据所述原始增益系数调整PWM单元产生的第一背光控制系数；
    将调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制；
    其中，所述获取所述原始图像帧中各像素点对应的饱和度的步骤包括：
    各像素点对应的饱和度根据如下公式进行计算：
    Figure PCTCN2017070529-appb-100001
    其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值；
    其中，所述将调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的步骤包括：
    获取调整后的所述第一背光控制系数与所述CABC单元产生的所述第二背光控制系数的乘积作为第三背光控制系数；
    判断所述第三背光控制系数是否小于100％；
    若所述第三背光系数小于100％，输出占空比为所述第三背光系数的PWM 信号至所述背光灯模块；
    若所述第三背光系数大于等于100％，输出占空比为100％的PWM信号至所述背光灯模块。
  2. 根据权利要求1所述的驱动方法，其中，所述根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数的步骤包括：
    获取所述像素数量落入最多的所述子饱和度区间对应的所述增益系数作为所述原始增益系数。
  3. 根据权利要求1所述的驱动方法，其中，所述根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数的步骤包括：
    根据落入各所述子饱和度区间的所述像素数量获取各所述子饱和度区间对应的权重；
    根据各所述子饱和度区间对应的所述权重和所述增益系数获取所述原始增益系数。
  4. 一种显示面板的驱动方法，其中，所述驱动方法包括：
    将所述显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间；
    获取所述原始图像帧中各像素点对应的饱和度；
    根据各像素点对应的所述饱和度统计所述原始图像帧中落入各所述子饱和度区间内的像素数量；
    根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数；
    根据所述原始增益系数调整PWM单元产生的第一背光控制系数；
    将调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。
  5. 根据权利要求4所述的驱动方法，其中，所述获取所述原始图像帧中各像素点对应的饱和度的步骤包括：
    各像素点对应的饱和度根据如下公式进行计算：
    Figure PCTCN2017070529-appb-100002
    其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值。
  6. 根据权利要求4所述的驱动方法，其中，所述根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数的步骤包括：
    获取所述像素数量落入最多的所述子饱和度区间对应的所述增益系数作为所述原始增益系数。
  7. 根据权利要求4所述的驱动方法，其中，所述根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数的步骤包括：
    根据落入各所述子饱和度区间的所述像素数量获取各所述子饱和度区间对应的权重；
    根据各所述子饱和度区间对应的所述权重和所述增益系数获取所述原始增益系数。
  8. 根据权利要求4所述的驱动方法，其中，所述将调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的步骤包括：
    获取调整后的所述第一背光控制系数与所述CABC单元产生的所述第二背光控制系数的乘积作为第三背光控制系数；
    判断所述第三背光控制系数是否小于100％；
    若所述第三背光系数小于100％，输出占空比为所述第三背光系数的PWM信号至所述背光灯模块；
    若所述第三背光系数大于等于100％，输出占空比为100％的PWM信号至所述背光灯模块。
  9. 一种显示面板的驱动装置，其中，所述驱动装置包括：
    划分模块，用于将所述显示面板待显示的原始图像帧的饱和度区间划分为多个子饱和度区间；
    第一获取模块，用于获取所述原始图像帧中各像素点对应的饱和度；
    统计模块，与所述划分模块和所述第一获取模块连接，用于根据所述第一获取模块获取的各像素点对应的所述饱和度统计所述原始图像帧中落入所述划分模块划分的各所述子饱和度区间内的像素数量；
    第二获取模块，与所述统计模块连接，用于根据所述统计模块统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数；
    调整模块，与所述第二获取模块连接，用于根据所述第二获取模块获取的所述原始增益系数调整PWM单元产生的第一背光控制系数；
    处理模块，与所述调整模块连接，用于将所述调整模块调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制。
  10. 根据权利要求9所述的驱动装置，其中，所述第一获取模块获取所述原始图像帧中各像素点对应的饱和度的操作包括：
    各像素点对应的饱和度根据如下公式进行计算：
    Figure PCTCN2017070529-appb-100003
    其中，s为饱和度，R1、G1和B1分别为各像素点的三色子像素数据中的红色灰阶值、绿色灰阶值和蓝色灰阶值，Max(R1、G1、B1)为红色灰阶值R1、绿色灰阶值G1和蓝色灰阶值B1中的最大值，Min(R1、G1、B1)为红色灰阶值 R1、绿色灰阶值G1和蓝色灰阶值B1中的最小值。
  11. 根据权利要求9所述的驱动装置，其中，所述第二获取模块根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数的操作包括：
    所述第二获取模块获取所述像素数量落入最多的所述子饱和度区间对应的所述增益系数作为所述原始增益系数。
  12. 根据权利要求9所述的驱动装置，其中，所述第二获取模块根据统计的所述像素数量和各所述子饱和度区间对应的增益系数获取所述原始图像帧对应的原始增益系数的操作包括：
    所述第二获取模块根据落入各所述子饱和度区间的所述像素数量获取各所述子饱和度区间对应的权重，根据各所述子饱和度区间对应的所述权重和所述增益系数获取所述原始增益系数。
  13. 根据权利要求9所述的驱动装置，其中，所述处理模块将调整后的所述第一背光控制系数与CABC单元产生的第二背光控制系数进行加权后输出给背光灯模块进行画面控制的操作包括：
    所述处理模块获取调整后的所述第一背光控制系数与所述CABC单元产生的所述第二背光控制系数的乘积作为第三背光控制系数；
    判断所述第三背光控制系数是否小于100％；
    若所述第三背光系数小于100％，输出占空比为所述第三背光系数的PWM信号至背光灯模块；
    若所述第三背光系数大于等于100％，输出占空比为100％的PWM信号至背光灯模块。
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