WO2020207168A1 - 显示模组的驱动方法、驱动系统和显示装置 - Google Patents

显示模组的驱动方法、驱动系统和显示装置 Download PDF

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Publication number
WO2020207168A1
WO2020207168A1 PCT/CN2020/078391 CN2020078391W WO2020207168A1 WO 2020207168 A1 WO2020207168 A1 WO 2020207168A1 CN 2020078391 W CN2020078391 W CN 2020078391W WO 2020207168 A1 WO2020207168 A1 WO 2020207168A1
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Prior art keywords
signal
light source
color
ave
brightness
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PCT/CN2020/078391
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English (en)
French (fr)
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单剑锋
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重庆惠科金渝光电科技有限公司
惠科股份有限公司
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Priority claimed from CN201910275200.0A external-priority patent/CN110111744B/zh
Priority claimed from CN201910275212.3A external-priority patent/CN110189717B/zh
Application filed by 重庆惠科金渝光电科技有限公司, 惠科股份有限公司 filed Critical 重庆惠科金渝光电科技有限公司
Priority to US17/415,755 priority Critical patent/US11455962B2/en
Publication of WO2020207168A1 publication Critical patent/WO2020207168A1/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
    • 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
    • G09G3/3413—Details of control of colour illumination sources
    • 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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/068—Adjustment of display parameters for control of viewing angle adjustment
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation
    • 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
    • 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

Definitions

  • This application relates to the field of display technology, and in particular to a driving method, driving system and display device of a display module.
  • liquid crystal displays have become the mainstream products of displays due to their thin body, power saving and low radiation, and have been widely used.
  • Most of the liquid crystal displays are backlit liquid crystal displays, which include a liquid crystal panel and a backlight module (Backlight Module).
  • the working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates, and apply a driving voltage on the two glass substrates to control the rotation direction of the liquid crystal molecules, so as to refract light from the backlight module to produce images.
  • the color saturation of the signal is adjusted to improve the color cast, but this operation will lose the color saturation of the signal.
  • the purpose of this application is to provide a driving method, a driving system and a display device for a display module, which can reduce color shift while maintaining color purity performance.
  • the present application discloses a driving method of a display module, including a driving process of a synchronously driven display panel and a driving process of a backlight module:
  • the backlight module includes a plurality of independently controlled first color light sources, second color light sources, and third color light sources; the light source brightness corresponding to the first color light source is a first brightness value, and the second color light source corresponds to The light source brightness is a second brightness value, and the light source brightness corresponding to the third color light source is a third brightness value;
  • the driving process of the display panel includes steps:
  • the driving process of the backlight module includes the steps:
  • the application also discloses a driving system of a display module using the driving method of the display module, which includes: a driving circuit of a display panel that is driven synchronously, and a driving circuit of a backlight module: the backlight module includes a plurality of independent The first color light source, the second color light source, and the third color light source are controlled; the light source brightness corresponding to the first color light source is the first brightness value, and the light source brightness corresponding to the second color light source is the second brightness value, so The light source brightness corresponding to the third color light source is a third brightness value; the driving circuit of the display panel includes: receiving a first color signal corresponding to the display panel, converting the first color signal into a first brightness normalized signal, A receiver that converts the first normalized signal of brightness into a first hue color saturation luminance spatial signal; using a preset adjustment coefficient to adjust the first color saturation signal of the first hue color saturation luminance spatial signal to obtain a second A color saturation signal regulator; a converter that converts the second color saturation signal into a second
  • the application also discloses a display device including a drive system of the display module and a display module;
  • the drive system of the display module includes: a drive circuit of a display panel that is driven synchronously, and a drive circuit of a backlight module:
  • the backlight module includes a plurality of independently controlled first color light sources, second color light sources, and third color light sources;
  • the light source brightness corresponding to the first color light source is a first brightness value
  • the light source corresponding to the second color light source The brightness is the second brightness value
  • the light source brightness corresponding to the third color light source is the third brightness value;
  • the driving circuit of the display panel includes: receiving the first color signal corresponding to the display panel, and converting the first color signal into a first color signal A receiver that converts the first brightness normalized signal into a first hue color saturation luminance space signal; using a preset adjustment coefficient to saturate the first hue color saturation luminance space signal of the first color Adjust the color signal to obtain the second color saturation signal; convert the second color saturation
  • an exemplary technique is to adjust the first color saturation, and the obtained second color saturation is correspondingly converted into a second color signal, Using the second color signal to drive the display panel, the color shift problem can be well improved; however, due to the adjustment of the color saturation value, the image quality saturation is lacking; this application is based on the first color saturation And the second color saturation signal to obtain the light source adjustment coefficient to adjust the brightness of the light source for the smallest color light source, improve the hue for the loss of color saturation, supplemented by the adjusted light source intensity, and even make the adjusted color point return The original saturated color point, while reducing the visual role deviation, maintains the color purity performance.
  • Figure 1 is a schematic diagram of the large viewing angle and front view role shift changes of various representative color systems of liquid crystal displays
  • FIG. 2 is a first schematic diagram of dividing original pixels into primary and secondary pixels in an exemplary solution
  • FIG. 3 is a second schematic diagram of dividing original pixels into primary and secondary pixels in an exemplary solution
  • FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a driving system of a display module according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a driving circuit of a display panel according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a driving circuit of a backlight module according to an embodiment of the present application.
  • FIG. 8 is a flowchart of a driving method of a display module according to an embodiment of the present application.
  • FIG. 9 is a flowchart of a driving method of a display module according to another embodiment of the present application.
  • FIG. 10 is a schematic diagram of a direct display module according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of hue expression according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of changes of a color saturation signal and a second color saturation signal according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of changes of a color saturation signal and a second color saturation signal of another embodiment of the present application.
  • FIG. 14 is a schematic diagram of changes in color difference between a color saturation signal and a second color saturation signal according to an embodiment of the present application
  • 15 is a schematic diagram of changes in color difference of different colors of a color saturation signal and a second color saturation signal of another embodiment of the present application;
  • FIG. 16 is a schematic structural diagram of a driving circuit of a display panel according to another embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a driving circuit of a backlight module according to another embodiment of the present application.
  • FIG. 18 is a flowchart of a driving method of a display module according to another embodiment of the present application.
  • FIG. 19 is a flowchart of a driving method of a display module according to another embodiment of the present application.
  • VA Very Alignment
  • IPS In-plane Switch
  • VA type liquid crystal technology has higher production efficiency and lower production efficiency.
  • VA-type liquid crystal technology has obvious defects in optical properties in terms of optical properties. In particular, large-size panels require a larger viewing angle for commercial applications.
  • Figure 1 is a schematic diagram of the large viewing angle and front view role shift changes of various representative color systems in the LCD panel; as shown in Figure 1, when the color tone is close to the pure color of R (red), G (green), and B (blue) , The color cast degradation of viewing angle is more obvious, and when the hue is close to the pure tones of R, G, B, the color cast is more obvious, the reason is that the pure tones of R, G, B have other color components.
  • FIG. 2 is a first comparison diagram without distinguishing between primary and secondary pixels and distinguishing between primary and secondary pixels.
  • Figure 3 is a second schematic diagram of comparison without distinguishing between primary and secondary pixels and distinguishing between primary and secondary pixels.
  • ⁇ A represents the pretilt angle of the main pixel under high voltage
  • ⁇ B represents the pretilt angle of the sub-pixel under low voltage.
  • FIG. 3 is the gray scale signal, and the ordinate is the brightness signal. Under a large viewing angle, the brightness quickly saturates with the signal, causing the problem of large viewing angle deviation (Fig. 3, the arc segment on the left). The distinction between primary and secondary pixels can improve this problem to a certain extent.
  • the high-voltage side viewing angle voltage corresponding to the brightness change ratio of the liquid crystal display is more likely to become saturated, so the original signal is divided into a large voltage and a small voltage signal, as shown in Figure 3.
  • the large voltage plus the small voltage should maintain the original front view signal with the brightness change .
  • the side-view brightness seen by a large voltage changes with the gray scale as shown in Part A of Figure 3, and the side-view brightness seen with a small voltage changes with the gray scale as shown in Part B of Figure 3.
  • the brightness of the side-view synthesis varies with the gray level.
  • the change is closer to the relationship between the emmetropia brightness and the grayscale change, so the relationship between the viewing angle brightness and the signal change is close to the emmetropia original signal brightness changing with the signal, so that the viewing angle is improved.
  • the main and sub-pixels are given different driving voltages to solve the defect of visual role deviation.
  • the pixel design often needs to design metal traces or TFT (Thin Film Transistor) elements to drive the sub-pixels.
  • TFT Thin Film Transistor
  • the present application discloses a display device 300, which includes the following display module driving system 100 and display module 200.
  • the display module 200 includes a display panel and a backlight module.
  • the present application also discloses a display module driving system 100.
  • the following display module driving method is applied to the display module driving system 100 disclosed in this application
  • the driving system 100 of the display module includes: a driving circuit 110 of a display panel that is driven synchronously, and a driving circuit 120 of a backlight module:
  • the backlight module includes at least one backlight subarea, each backlight subarea includes a first color light source, a second color light source, and a third color light source that are independently controlled; the light source brightness corresponding to the first color light source is a first brightness value, The light source brightness corresponding to the second color light source is a second brightness value, and the light source brightness corresponding to the third color light source is a third brightness value;
  • the driving circuit 110 of the display panel includes a receiver 111, an adjuster 112, a converter 113, and a driver 114;
  • the receiver 111 receives a first color signal corresponding to the display panel, and converts the first color signal into a first brightness A signal that converts the first normalized signal of brightness into a first hue color saturation luminance space signal;
  • the adjuster 112 adjusts the first color saturation of the first hue color saturation luminance space signal by a preset adjustment coefficient The signal is adjusted to obtain a second color saturation signal;
  • the converter 113 converts the second color saturation signal into a second color signal;
  • the driver 114 uses the second color signal to drive the display panel;
  • the driving circuit 120 of the backlight module includes a light source receiver 121, a light source determiner 123, a light source adjuster 124, and a light source driver 125;
  • the light source receiver 121 receives the first color signal corresponding to the display panel, and obtains the first color The saturation signal and the second color saturation signal;
  • the light source determiner 123 determines the smallest color light source among the first color light source, the second color light source, and the third color light source, according to the first color saturation signal, the second color saturation The degree signal obtains the light source adjustment coefficient corresponding to the minimum color light source;
  • the light source adjuster 124 uses the light source adjustment coefficient to adjust the minimum color light source to obtain a fourth brightness value;
  • the light source driver 125 uses the fourth brightness value to drive the minimum color light source .
  • the present application also discloses a driving method of a display module, including a display panel driving process of synchronous driving, and a backlight module driving process:
  • the backlight module includes a plurality of independently controlled first color light sources, second color light sources, and third color light sources; the light source brightness corresponding to the first color light source is a first brightness value, and the second color light source corresponds to The light source brightness is a second brightness value, and the light source brightness corresponding to the third color light source is a third brightness value;
  • the driving process of the display panel includes steps:
  • S11 receiving the first color signal corresponding to the display panel, converting the first color signal into a first brightness normalization signal, and converting the first brightness normalization signal into a first hue color saturation brightness (HSV) spatial signal;
  • HSV hue color saturation brightness
  • the driving process of the backlight module includes steps:
  • S21 Receive the first color signal corresponding to the display panel, and obtain the first color saturation signal and the second color saturation signal;
  • S22 Determine the smallest color light source among the first color light source, the second color light source, and the third color light source, and obtain a light source adjustment coefficient corresponding to the smallest color light source according to the first color saturation signal and the second color saturation signal;
  • an exemplary technique is to adjust the first color saturation, and the obtained second color saturation is correspondingly converted into a second color signal, Using the second color signal to drive the display panel, the color shift problem can be well improved; however, due to the adjustment of the color saturation value, the image quality saturation is lacking; this application is based on the first color saturation And the second color saturation signal to obtain the light source adjustment coefficient to adjust the brightness of the light source for the smallest color light source, improve the hue for the loss of color saturation, supplemented by the adjusted light source intensity, and even make the adjusted color point return
  • the original saturated color point while reducing the visual role deviation, maintains the color purity performance, where the color signal can be the three primary color signals of red, green and blue.
  • the specific first color signal may be a first red, green and blue primary color signal
  • the second color signal may be a second red, green and blue primary color signal.
  • the step of adjusting the first color saturation signal of the first hue color saturation luminance spatial signal by using the preset adjustment coefficient to obtain the second color saturation signal includes:
  • the second color saturation signal S’n_i,j is obtained from the first color saturation signal Sn_i,j through the following formula:
  • a, b, c, d, e are preset adjustment coefficients
  • the step of converting the second color saturation signal into a second color signal includes: converting the second color saturation signal to obtain a second hue color saturation luminance space signal, and turning down according to the second hue color saturation luminance space signal The minimum value in the normalized brightness signal to obtain a second normalized brightness signal;
  • the second color signal is obtained by conversion according to the second brightness normalized signal.
  • the step of determining the smallest color light source among the first color light source, the second color light source, and the third color light source, and obtaining the light source adjustment coefficient corresponding to the smallest color light source according to the first color saturation signal and the second color saturation signal It also includes: determining the second largest color light source and the smallest color light source among the first color light source, the second color light source, and the third color light source; obtaining the light source corresponding to the smallest color light source according to the first color saturation signal and the second color saturation signal The adjustment factor and the light source adjustment factor corresponding to the second largest color light source;
  • the use of the light source adjustment coefficient to adjust the minimum color light source to obtain the fourth brightness value; the step of using the fourth brightness value to drive the minimum color light source includes: using the light source adjustment coefficient corresponding to the minimum color light source to adjust the minimum color light source to obtain the first Four brightness values, and use the light source adjustment coefficient corresponding to the second largest color light source to adjust the second largest color light source to obtain the fifth brightness value; use the fourth brightness value to drive the smallest color light source, and use the fifth brightness value to adjust the second largest color The light source is driven.
  • This application not only uses the fourth brightness value to drive the smallest color light source, but also uses the fifth brightness value to drive the second largest color light source, so that both the smallest color light source and the second largest color light source can strengthen the corresponding under-displayed hue to make it return To the original saturated color point, the color purity of the hue corresponding to the smallest color light source and the second largest color light source is maintained.
  • the step of determining the minimum color light source among the first color light source, the second color light source and the third color light source, and obtaining the light source adjustment coefficient corresponding to the minimum color light source according to the first color saturation signal and the second color saturation signal It also includes: determining the largest color light source, the second largest color light source and the smallest color light source among the first color light source, the second color light source, and the third color light source; obtaining the maximum color according to the first color saturation signal and the second color saturation signal The light source adjustment coefficient corresponding to the light source, the light source adjustment coefficient corresponding to the second largest color light source, and the light source adjustment coefficient corresponding to the smallest color light source;
  • the use of the light source adjustment coefficient to adjust the minimum color light source to obtain the fourth brightness value; the step of using the fourth brightness value to drive the minimum color light source includes: using the light source adjustment coefficient corresponding to the minimum color light source to adjust the minimum color light source to obtain the first Four brightness values; use the light source adjustment coefficient corresponding to the second largest color light source to adjust the second largest color light source to obtain the fifth brightness value; use the light source adjustment coefficient corresponding to the largest color light source to adjust the largest color light source to obtain the sixth brightness value; use the first Four brightness values drive the smallest color light source; use the fifth brightness value to drive the second largest color light source; use the sixth brightness value to drive the largest color light source.
  • the under-displayed hue is enhanced to return to the original saturated color point, and the color purity of the hue corresponding to the smallest color light source, the second largest color light source, and the largest color light source is maintained.
  • the step of determining the minimum color light source among the first color light source, the second color light source and the third color light source, and obtaining the light source adjustment coefficient corresponding to the minimum color light source according to the first color saturation signal and the second color saturation signal includes:
  • the first normalized signal of luminance corresponding to the first color saturation signal and calculate the average signal of the first red luminance normalized signal, the average signal of the first green luminance normalized signal, and the first blue luminance normalized signal.
  • the second normalized signal of brightness corresponding to the second color saturation signal respectively calculate the average value of the second red normalized signal corresponding to the backlight zone, the average value of the second normalized signal of green brightness and the first 2.
  • the backlight module is a direct type backlight
  • the direct-lit backlight is divided into multiple backlight partitions, and each backlight partition has an independent red light source, a green light source, and a blue light source;
  • the first luminance normalization signal includes a first red luminance normalization signal, a first green luminance normalization signal, and a first blue luminance normalization signal;
  • the second luminance normalization signal includes a second red luminance normalization signal, a second green luminance normalization signal, and a second blue luminance normalization signal.
  • the first maximum signal, the first large signal and the first minimum signal in the average signal of the red, green, and blue tones corresponding to the first color saturation signal, and the second color saturation signal are compared to obtain the first light source adjustment coefficient and the second light source Adjust the coefficient to realize the targeted adjustment of the light source, so that the light source can accurately supplement the intensity of the light source according to the drop amplitude of the first minimum signal and the first large signal, so as to achieve even after adjusting the color saturation.
  • the purpose of balance can be achieved; with the aid of the light source, the color point can return to the original saturated color point, while reducing the color cast of the display panel, while maintaining the color purity performance.
  • the first maximum signal maxn_ave, the first large signal midn_ave, the first minimum signal minn_ave, the second maximum signal max'n_ave, the first large signal mid'n_ave and the first minimum signal min'n_ave in this application are all calculated It is concluded that the accuracy of light source adjustment in this application is improved.
  • FIG. 10 is a schematic diagram of a direct display module according to an embodiment of the present application.
  • the first red brightness normalized signals corresponding to the backlight partition are: rn_1, 1, rn_1,2,..., rn_i ,j
  • the first green brightness normalized signal corresponding to the backlight partition are: gn_1,1, gn_1,2,...,gn_i,j
  • the first blue brightness normalized signal corresponding to the backlight partition are: bn_1, 1.
  • bn_1,2,..., bn_i,j the average signal rn_ave of the first red brightness normalization signal, the average signal gn_ave of the first green brightness normalization signal, and the average signal of the first blue brightness normalization signal
  • rn_ave Averaged brightness normalization signal
  • gn_ave of the first green brightness normalization signal the average signal of the first blue brightness normalization signal
  • gn_ave Average(gn_1,1, gn_1,2,...,gn_i,j);
  • bn_ave Average(bn_1,1, bn_1,2,...,bn_i,j);
  • the second red brightness normalized signals corresponding to the backlight subarea are: r'n_1,1, r'n_1,2,...,r'n_i,j, and the second green brightness normalized signals corresponding to the backlight subarea are g respectively 'n_1,1,g'n_1,2,...,g'n_i,j, the second blue brightness normalized signal corresponding to the backlight partition are b'n_1,1, b'n_1,2,...,b' n_i,j, the average signal r'n_ave of the second red brightness normalization signal, the average signal g'n_ave of the second green brightness normalization signal, and the average signal b'n_ave of the second blue brightness normalization signal.
  • the relationship satisfies the following formula:
  • r’n_ave Average(r’n_1,1, r’n_1,2,...,r’n_i,j);
  • g’n_ave Average(g’n_1,1, g’n_1,2,...,g’n_i,j);
  • b’n_ave Average(b’n_1,1, b’n_1,2,...,b’n_i,j).
  • the average signal of the first red brightness normalized signal, the average signal of the first green brightness normalized signal, and the first blue The average signal of the color brightness normalized signal, the average signal of the second red brightness normalized signal, the average signal of the second green brightness normalized signal, and the average signal of the second blue brightness normalized signal, the solution
  • the calculation method pays attention to the change of the normalized signal of the brightness of each pixel, so that the calculated structure is representative and accurate, and realizes the accurate and efficient adjustment of the light source, so that the light intensity displayed by the adjusted light source is the same as expected Has a high degree of consistency.
  • the first color signal corresponding to the display panel is received, the first color signal is converted into a first brightness normalized signal, and the first brightness normalized signal is converted into a first color saturation
  • the steps of the luminance spatial signal include: the input signal of the first color signal is an 8bit grayscale digital signal of 0,1,...255, and each grayscale signal corresponds to the 255 input first luminance normalized signal (with 255 grayscale as Maximum brightness) are r, g, b respectively; where,
  • H is the representative color, presenting a 00 ⁇ 3600 colors representing different hue, wherein 0 0 is defined as the red, green 1200, blue 2400;
  • max represents the maximum value in r/g/b
  • min represents the minimum value in r/g/b.
  • FIG. 12 is a schematic diagram of changes of the color saturation signal and the second color saturation signal.
  • the first color saturation signal Sn_i of the first hue color saturation luminance spatial signal using a preset adjustment coefficient The step of adjusting j to obtain the second color saturation signal S'n_i,j includes: the second color saturation signal S'n_i,j is obtained from the first color saturation signal Sn_i,j by the following formula:
  • the step of converting the second color saturation signal into a second color signal includes: converting the second color saturation signal to obtain a second hue color saturation luminance space signal, and turning down according to the second hue color saturation luminance space signal The minimum value in the normalized brightness signal to obtain a second normalized brightness signal;
  • the second color signal is obtained by conversion according to the second brightness normalized signal.
  • the present application may also divide the hue H into m hue intervals;
  • FIG. 13 is a schematic diagram of the color saturation signal and the second color saturation signal change in this embodiment, as shown in FIG. 13, according to the hue Obtain preset adjustment coefficients a(H(m)), b(H(m)), c(H(m)), d(H(m)), e(H(m)) in the interval; among them, the color shift The more severe the adjustment coefficient is, the larger the adjustment coefficient; the color saturation signal s and the second color saturation signal S'(H(m), S) corresponding to the hue interval satisfy the following formula:
  • a(H(m)), b(H(m)), c(H(m)), d(H(m)), e(H(m)) are the adjustment constants of hue interval to saturation.
  • the step of converting the second color saturation signal into a second color signal includes: converting the second color saturation signal S'n_i,j to obtain a second luminance normalization signal, and converting the second luminance normalization signal r' , G', b'are converted by the following formula to obtain the second color signal R', G', B':
  • R' 255 ⁇ (r') 1/ ⁇ r
  • G' 255 ⁇ (g') 1/ ⁇ g
  • B' 255 ⁇ (b') 1/ ⁇ b .
  • the fourth brightness value is used to drive the smallest color light source
  • the fifth brightness value is used to drive the second largest color light source.
  • Figure 14 is a schematic diagram of the change of the color difference between the color saturation signal and the second color saturation signal
  • Figure 15 is a schematic diagram of the change of the color difference of different colors of the color saturation signal and the second color saturation signal; in summary, the adjustment is lowered
  • the mixed color component increases the color purity of the main color to improve the color purity of the signal, which is beneficial to improve the color cast.
  • take red as an example.
  • the hue is close to the red pure color hue, the color cast of viewing angle is more deteriorated.
  • the purpose of increasing the color saturation of the main hue in the red pure color hue can be achieved, and the color saturation of the main hue of red can be reduced.
  • the mixing of other colors makes the large viewing angle light leakage color close to the original color of the front view, and the problem of front view and side view color shift is solved.
  • red is the main hue; this application can also increase the minimum brightness normalization signal in the brightness normalization signal of other colors in the red pure color tone, thereby Reduced the color saturation of red as the main color; this will make the mixed color close to white neutral color, and the color cast of neutral color will achieve a color cast drop.
  • the main reason is that the three primary colors of red, green and blue are leaked, so that the three primary colors leak color No color is produced, that is, the color of the light leakage from the front side is a neutral color.
  • the present application also discloses a display module driving system 100, which uses the following display module driving method, including: synchronization
  • the driving circuit 110 of the display panel and the driving circuit 120 of the backlight module the backlight module includes at least one backlight subarea, and each backlight subarea includes independently controlled first color light source, second color light source and third color Light source;
  • the light source brightness corresponding to the first color light source is a first brightness value
  • the light source brightness corresponding to the second color light source is a second brightness value
  • the light source brightness corresponding to the third color light source is a third brightness value;
  • the driving circuit 110 of the display panel includes: a receiver 111, an adjuster 112, and a driver 113; the receiver 111 receives the first color signal corresponding to the display panel, and converts the first color signal into a first brightness normalization signal , Converting the first normalized signal of brightness into a first hue color saturation luminance space signal; the adjuster 112 uses a preset adjustment coefficient to adjust the first color saturation signal of the first hue color saturation luminance space signal , To obtain a second color saturation signal with improved color shift and a second brightness normalization signal corresponding to the second color saturation signal; the driver 113 converts the second brightness normalization signal into a second color signal, using the first Two color signals drive the display panel;
  • the driving circuit 120 of the backlight module includes: a light source receiver 121, a light source calculator 122, a light source determiner 123, a light source adjuster 124, and a light source driver 125;
  • the light source receiver 121 receives the first color signal corresponding to the display panel , And calculate the first color saturation signal and the second color saturation signal corresponding to all pixels in the backlight zone;
  • the light source calculator 122 respectively calculates the average signal and the second color saturation signal of all the first color saturation signals corresponding to the backlight zone The average signal of the saturation signal;
  • the light source determiner 123 determines the smallest color light source among the first color light source, the second color light source, and the third color light source, according to the average signal of the first color saturation signal and the second color saturation
  • the average signal of the signal obtains the minimum light source adjustment coefficient corresponding to the minimum color light source;
  • the light source adjuster 124 uses the minimum light source adjustment coefficient to adjust the minimum color light source to obtain the fourth brightness value, and the light source
  • the light source adjuster includes a first light source adjuster and a second light source adjuster.
  • the first light source adjuster determines the minimum light source and obtains the minimum light source adjustment coefficient;
  • the second light source adjuster determines the first color light source and the second light source.
  • the smallest color light source in the two-color light source and the third-color light source obtains the second-largest light source adjustment coefficient corresponding to the second-largest color light source according to the first brightness normalization signal and the second brightness normalization signal;
  • the light source driver includes a first A light source driver and a second light source driver, the first light source driver uses a minimum light source adjustment coefficient to adjust the minimum color light source to obtain a fourth brightness value, and uses the fourth brightness value to drive the minimum color light source;
  • the second light source driver uses The second-largest light source adjustment coefficient adjusts the second-largest color light source to obtain a fifth brightness value, and uses the fifth brightness value to drive the second-largest color light source.
  • the present application also discloses a driving method of a display module, which includes a driving process of a synchronously driven display panel and a driving process of a backlight module:
  • the backlight module includes at least one backlight subarea, each backlight subarea includes a first color light source, a second color light source, and a third color light source that are independently controlled; the light source brightness corresponding to the first color light source is a first brightness value, The light source brightness corresponding to the second color light source is a second brightness value, and the light source brightness corresponding to the third color light source is a third brightness value;
  • the driving process of the display panel includes steps:
  • S31 receiving the first color signal corresponding to the display panel, converting the first color signal into a first brightness normalization signal, and converting the first brightness normalization signal into a first hue color saturation brightness (HSV) spatial signal;
  • HSV hue color saturation brightness
  • S32 Use a preset adjustment coefficient to adjust the first color saturation signal of the first hue color saturation brightness spatial signal to obtain a second color saturation signal with improved color shift and a second brightness corresponding to the second color saturation signal Normalized signal;
  • the driving process of the backlight module includes steps:
  • S41 Receive the first color signal corresponding to the display panel, and calculate the first color saturation signal and the second color saturation signal corresponding to all pixels in the backlight zone;
  • S43 Determine the minimum color light source among the first color light source, the second color light source, and the third color light source, and obtain the minimum color light source corresponding to the minimum color light source according to the average signal of the first color saturation signal and the average signal of the second color saturation signal.
  • Light source adjustment factor
  • S44 Use the minimum light source adjustment coefficient to adjust the minimum color light source to obtain a fourth brightness value, and use the fourth brightness value to drive the minimum color light source.
  • an exemplary technique is to adjust the first color saturation, and the obtained second color saturation is correspondingly converted into a second color signal, Using the second color signal to drive the display panel, the color shift problem can be well improved; however, due to the adjustment of the color saturation value, the image quality saturation is lacking; this application is based on the first color saturation
  • the average signal of the signal and the average signal of the second color saturation signal obtain the minimum light source adjustment coefficient to adjust the brightness of the light source for the minimum color light source.
  • the adjustment of the light source intensity is in the unit of a backlight zone, which improves the loss of color saturation
  • the hue of, supplemented by the adjusted light source intensity makes the adjusted color saturation return to the original color saturation, which reduces the visual character deviation while maintaining the color purity performance.
  • the color signal can be the three primary color signals of red, green and blue.
  • the first color signal may be a first red, green, and blue primary color signal
  • the second color signal may be a second red, green, and blue primary color signal.
  • the minimum color light source can be adjusted as a whole, and the minimum color can be controlled by The light source intensity of the light source makes the adjusted light source intensity combined with the second color saturation signal corresponding to the minimum color light source to show the color display of the first color saturation signal, which improves the color shift while improving Even maintain the gorgeousness of colors.
  • the first brightness normalization signal includes a first red brightness normalization signal rn_i,j, a first green brightness normalization signal gn_i,j, and a first blue brightness normalization signal bn_i,j;
  • the two brightness normalization signals include a second red brightness normalization signal r'n_i,j, a second green brightness normalization signal g'n_i,j, and a second blue brightness normalization signal b'n_i,j;
  • the first color saturation signal of the first hue color saturation luminance spatial signal is adjusted by using a preset adjustment coefficient to obtain a second color saturation signal and a second luminance normalized signal corresponding to the second color saturation signal
  • the specific formula is as follows:
  • the steps of the average signal of the second color saturation signal and the average signal of the second color saturation signal include: calculating the average value of all the first saturation signals in the backlight zone: Sn_a
  • the second brightness normalization signal is obtained, which reduces the components of colors other than the main color, that is, reduces color mixing, thereby effectively improving the color cast Circumstances; reduce the minimum minn_i,j, increase the color saturation, that is, remove the other colors in the color mixture, and only keep the main color, so that the color of the large viewing angle is close to the original color, and the problem of side-view color shift can also be squarely viewed Solution, that is, the color of light leakage from the side view is one of the three primary colors;
  • the preset adjustment coefficient in the formula for converting the first color saturation signal to the second color saturation signal can also be changed according to actual conditions; for example, it is also possible to reduce the saturation by increasing minn_i, j when needed At this time, the mixed color will be close to the white neutral color, and the color cast of the neutral color will reach the color cast reduction.
  • the main reason is that the three primary colors of RGB are leaked, so that the color of the three primary colors leaks will not produce color, that is, the color of the side view leaks. It is a neutral color.
  • the third color saturation signal corresponding to all pixels of the backlight subarea is obtained and the third color saturation average value is calculated; the average value according to the first color saturation signal
  • the step of obtaining the minimum light source adjustment coefficient corresponding to the minimum color light source by the average signal of the signal and the second color saturation signal includes: obtaining the minimum light source adjustment coefficient y, so that the average signal S'n_ave of the second color saturation signal corresponding to the backlight zone is at
  • minn_ave is the first of the actual average value of the first red brightness normalized signal, the average value of the first green brightness normalized signal, and the average value of the first blue brightness normalized signal of the backlight zone.
  • the minimum light source intensity corresponding to the second color saturation signal is adjusted, and the display situation is the color performance of the third color saturation signal.
  • the minimum light source adjustment coefficient is y, and the average signal of the adjusted third color saturation signal is equal to the average signal of the first color saturation signal, so that the color performance of the third color saturation signal is the same as the first color saturation. The color performance of the signal is consistent, and the color performance is maintained on the basis of improving the color cast.
  • the determining the minimum color light source among the first color light source, the second color light source, and the third color light source, and obtaining the minimum color light source corresponding to the minimum color light source according to the average signal of the first color saturation signal and the average signal of the second color saturation signal The step of adjusting the coefficient of light source further includes: determining the second largest color light source among the first color light source, the second color light source and the third color light source; obtaining the second largest light source according to the first brightness normalization signal and the second brightness normalization signal Adjustment coefficient; the use of the smallest light source adjustment coefficient to adjust the smallest color light source to obtain a fourth brightness value, and the step of using the fourth brightness value to drive the smallest color light source further includes: using the second largest light source adjustment coefficient to perform the second largest color light source The fifth brightness value is adjusted to obtain the fifth brightness value to drive the second largest color light source.
  • the first luminance normalization signal includes a first red luminance normalization signal, a first green luminance normalization signal, and a first blue luminance normalization signal;
  • the second luminance normalization signal includes a second luminance normalization signal Red brightness normalized signal, second green brightness normalized signal and second blue brightness normalized signal; in each backlight zone, calculate the average value of the first red brightness normalized signal, the first green brightness The first maximum average value, the first large average value and the first minimum average value among the average value of the normalized signal and the average value of the first blue brightness normalized signal; calculate the second red brightness normalized signal The second largest average, the second largest average, and the second smallest average of the average value of the second green luminance normalized signal and the second blue luminance normalized signal;
  • the step of obtaining the second-largest light source adjustment coefficient according to the first brightness normalization signal and the second brightness normalization signal includes:
  • H”n_ave is the average value of the hue displayed after the second-largest light source is adjusted by the second-largest light source adjustment coefficient x, that is, the accuracy before and after the overall hue is maintained.
  • the combination of the'n_ave scheme further improves the hue deviation caused by the color saturation adjustment stage, and has the function of correcting the hue.
  • maxn_ave Max(rn_ave, gn_ave, bn_ave);
  • minn_ave Min(rn_ave, gn_ave, bn_ave);
  • the second maximum average value max'n_ave, the first large average value mid'n_ave, the first minimum average value min'n_ave, the first red brightness normalized signal average r'n_ave, the first green brightness normalization The relationship between the average value g'n_ave of the unified signal and the average value b'n_ave of the first blue luminance normalized signal satisfies the following formula:
  • min’n_ave Min(r’n_ave, g’n_ave, b’n_ave).
  • the first red brightness normalized signals corresponding to the backlight partition are: rn_1,1, rn_1,2,...,rn_i,j
  • the first green brightness normalized signals corresponding to the backlight partition are: gn_1,1, gn_1, 2...., gn_i,j
  • the first blue brightness normalized signal corresponding to the backlight zone are: bn_1,1, bn_1,2,..., bn_i,j
  • the average value of the first red brightness normalized signal rn_ave The relationship between the average value gn_ave of the first green brightness normalized signal and the average value bn_ave of the first blue brightness normalized signal satisfies the following formula:
  • rn_ave Average(rn_1,1, rn_1,2,...,rn_i,j);
  • gn_ave Average(gn_1,1, gn_1,2,...,gn_i,j);
  • bn_ave Average(bn_1,1, bn_1,2,...,bn_i,j);
  • the second red luminance normalized signals corresponding to the backlight partition are: r'n_1,1, r'n_1,2,...,r'n_i,j
  • the second green luminance normalized signals corresponding to the backlight partition are: g'n_1,1, g'n_1,2,..., g'n_i,j
  • the second blue brightness normalized signal corresponding to the backlight partition are: b'n_1,1, b'n_1,2,..., b'n_i,j
  • n_ave satisfies the following formula:
  • r’n_ave Average(r’n_1,1, r’n_1,2,...,r’n_i,j);
  • g’n_ave Average(g’n_1,1, g’n_1,2,...,g’n_i,j);
  • b’n_ave Average(b’n_1,1, b’n_1,2,...,b’n_i,j).
  • This application obtains the average value of the first red brightness normalized signal, the average value of the first green brightness normalized signal, the average value of the first blue brightness normalized signal, and the second red brightness through accurate calculations.
  • the average value of the normalized signal, the average value of the second green brightness normalized signal, and the average value of the second blue brightness normalized signal are accurate to the change of the brightness normalized signal corresponding to each pixel, The result obtained by accurate calculation is also more accurate and the adjustment effect is better.
  • Fig. 10 is a schematic diagram of a direct-lit display module; as shown in Fig. 10, the display panel is divided into a plurality of backlight zones, and each backlight zone corresponds to an independently controlled first color light source, a second color light source, and a third color light source.
  • the first color light source, the second color light source and the third color light source are arranged corresponding to the pixels in the display area.
  • the first color signal corresponding to the display panel is received, the first color signal is converted into a first brightness normalized signal, and the first brightness normalized signal is converted into a first color saturation
  • the steps of the luminance spatial signal include: the input signal of the first color signal is an 8bit grayscale digital signal of 0,1,...255, and each grayscale signal corresponds to the 255 input first luminance normalized signal (with 255 grayscale as Maximum brightness) are r, g, b respectively; where,
  • H is the representative color, presenting a 00 ⁇ 3600 colors representing different hue, wherein 0 0 is defined as the red, green 1200, blue 2400;
  • max represents the maximum value in r/g/b
  • min represents the minimum value in r/g/b.
  • FIG. 12 is a schematic diagram of changes of the color saturation signal and the second color saturation signal.
  • the first color saturation signal Sn_i of the first hue color saturation luminance spatial signal using a preset adjustment coefficient The step of adjusting j to obtain the second color saturation signal S'n_i,j includes: the second color saturation signal S'n_i,j is obtained from the first color saturation signal Sn_i,j by the following formula:
  • the step of converting the second color saturation signal into a second color signal includes: converting the second color saturation signal to obtain a second hue color saturation luminance space signal, and turning down according to the second hue color saturation luminance space signal The minimum value in the normalized brightness signal to obtain a second normalized brightness signal;
  • the second color signal is obtained by conversion according to the second brightness normalized signal.
  • the present application may also divide the hue H into m hue intervals;
  • FIG. 13 is a schematic diagram of the color saturation signal and the second color saturation signal change in this embodiment, as shown in FIG. 13, according to the hue Obtain preset adjustment coefficients a(H(m)), b(H(m)), c(H(m)), d(H(m)), e(H(m)) in the interval; among them, the color shift The more severe the adjustment coefficient is, the larger the adjustment coefficient; the color saturation signal s and the second color saturation signal S'(H(m), S) corresponding to the hue interval satisfy the following formula:
  • a(H(m)), b(H(m)), c(H(m)), d(H(m)), e(H(m)) are the adjustment constants of hue interval to saturation.
  • the step of converting the second color saturation signal into a second color signal includes: converting the second color saturation signal S'n_i,j to obtain a second luminance normalization signal, and converting the second luminance normalization signal r' , G', b'are converted by the following formula to obtain the second color signal R', G', B':
  • R' 255 ⁇ (r') 1/ ⁇ r
  • G' 255 ⁇ (g') 1/ ⁇ g
  • B' 255 ⁇ (b') 1/ ⁇ b .
  • the fourth brightness value is used to drive the smallest color light source
  • the fifth brightness value is used to drive the second largest color light source.
  • Figure 14 is a schematic diagram of the change of the color difference between the color saturation signal and the second color saturation signal
  • Figure 15 is a schematic diagram of the change of the color difference of different colors of the color saturation signal and the second color saturation signal; in summary, the adjustment is lowered
  • the mixed color component increases the color purity of the main color to improve the color purity of the signal, which is beneficial to improve the color cast.
  • take red as an example.
  • the hue is close to the red pure color hue, the color cast of viewing angle is more deteriorated.
  • the purpose of increasing the color saturation of the main hue in the red pure color hue can be achieved, and the color saturation of the main hue of red can be reduced.
  • the mixing of other colors makes the large viewing angle light leakage color close to the original color of the front view, and the problem of front view and side view color shift is solved.
  • TN Transmission Nematic
  • IPS In-Plane Switching, in-plane switching
  • VA Vertical Alignment, vertical alignment type
  • MVA Multi-Domain Vertical Alignment, multi-quadrant vertical alignment type
  • OLED Organic Light-Emitting Diode, organic light-emitting diode

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Abstract

公开了一种显示模组的驱动方法、驱动系统和显示装置，显示面板的驱动过程包括：接收第一色彩信号后转化为第一色调色饱和度亮度空间信号；用预设调整系数调整第一色饱和度信号，得到第二色饱和度信号；将第二色饱和度信号转换为第二色彩信号后，驱动显示面板；背光模组的驱动过程包括：接收第一色彩信号，计算第一色饱和度信号的平均信号和第二色饱和度信号的平均信号（S21）；确定最小颜色光源，获取最小颜色光源对应的最小光源调整系数（S22）；调整最小颜色光源得第四亮度值（S23）；用第四亮度值驱动最小颜色光源(S24)。

Description

显示模组的驱动方法、驱动系统和显示装置
本申请要求于2019年4月8日提交中国专利局，申请号为CN201910275200.0，申请名称为“一种显示模组的驱动方法、驱动系统和显示装置”的中国专利申请的优先权，及于2019年4月8日提交中国专利局，申请号为CN201910275212.3，申请名称为“一种显示模组的驱动方法、驱动系统和显示装置”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
本申请涉及显示技术领域，尤其涉及一种显示模组的驱动方法、驱动系统和显示装置。
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。
随着科技的发展和进步，液晶显示器由于具备机身薄、省电和辐射低等热点而成为显示器的主流产品，得到了广泛应用。液晶显示器大部分为背光型液晶显示器，其包括液晶面板及背光模组(Backlight Module)。液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，并在两片玻璃基板上施加驱动电压来控制液晶分子的旋转方向，以将背光模组的光线折射出来产生画面。
其中，在一种发明人使用且未公开的方案中，通过对信号的色饱和度进行调整以改善色偏问题，但是如此操作，会对信号的色饱和度呈现效果有所损失。
发明内容
本申请的目的是提供一种显示模组的驱动方法、驱动系统和显示装置，在降低色偏的同时维持色彩纯度表现。
本申请公开了一种显示模组的驱动方法，包括同步驱动的显示面板的驱动过程，以及背光模组的驱动过程：
所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
所述显示面板的驱动过程，包括步骤：
接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号；
使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号；
将第二色饱和度信号转换为第二色彩信号；
使用第二色彩信号驱动显示面板；
所述背光模组的驱动过程，包括步骤：
接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号；
确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数；
使用第四亮度值对最小颜色光源进行驱动。
本申请还公开了一种使用显示模组的驱动方法的显示模组的驱动系统，包括：同步驱动的显示面板的驱动电路，以及背光模组的驱动电路：所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；所述显示面板的驱动电路包括：接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号的接收器；使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号的调整器；将第二色饱和度信号转换为第二色彩信号的转换器；以及使用第二色彩信号驱动显示面板的驱动器；所述背光模组的驱动电路包括：接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号的光源接收器；确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的光源确定器；使用光源调整系数对最小颜色光源进行调整得到第四亮度值的光源调整器；以及使用第四亮度值对最小颜色光源进行驱动的光源驱动器。
本申请还公开了一种显示装置，包括显示模组的驱动系统和显示模组；所述显示模组的驱动系统包括：同步驱动的显示面板的驱动电路，以及背光模组的驱动电路：所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；所述显示面板的驱动电路包括：接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号的接收器；使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号的调整器；将第二色饱和度信号转换为第二色彩信号的转换器；以及使用第二色彩信号驱动显示面板的驱动器；所述背光模组的驱动电路包括：接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号的光源计算器；确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的光源确定器；使用光源调整系数对最小颜色光源进行调整得到第四亮度值的光源调整器；以及使用第四亮度值对最小颜色光源进行驱动的光源驱动器；所述显示模组包括显示面板和背光模组。
相对于将显示面板的像素划分为主次像素来改善色偏问题的方案；示例性的技术是，对第一色饱和度进行调整，得到的第二色饱和度对应转换为第二色彩信号，应用第二色彩信号对显示面板进行驱动，色偏问题能够得到很好的改善；但是，由于对色饱和度值进行了调整，因而造成了画质饱和度缺失；本申请根据第一色饱和度和第二色饱和度信号获取光源调整系数来对最小颜色光源来调整光源亮度，改善了针对色饱和度受到损失的色调，辅以调整后的光源强度，甚至可以使得调整后的色点回到原饱和色点，在降低了视角色偏的同时，维持了色彩纯度表现。
附图说明
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅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性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是液晶显示器各种代表性色系的大视角与正视视角色偏变化示意图；
图2是示例性方案中，将原像素划分为主次像素的第一示意图；
图3是示例性方案中，将原像素划分为主次像素的第二示意图；
图4是本申请的一实施例的显示装置的结构示意图；
图5是本申请的一实施例的显示模组的驱动系统的结构示意图；
图6是本申请的一实施例的显示面板的驱动电路的结构示意图；
图7是本申请的一实施例的背光模组的驱动电路的结构示意图；
图8是本申请的一实施例的显示模组的驱动方法的流程图；
图9是本申请的另一实施例的显示模组的驱动方法的流程图；
图10是本申请的一实施例的直下式显示模组的示意图；
图11是本申请的一实施例的一种色调表达示意图；
图12是本申请的一实施例的色饱和度信号和第二色饱和度信号变化的示意图；
图13是本申请的另一实施例的色饱和度信号和第二色饱和度信号变化的示意图；
图14是本申请的一实施例的色饱和度信号和第二色饱和度信号的色差的变化示意图；
图15是本申请的另一实施例的色饱和度信号和第二色饱和度信号的不同颜色的色差的变化示意图；
图16是本申请的另一实施例的显示面板的驱动电路的结构示意图；
图17是本申请的另一实施例的背光模组的驱动电路的结构示意图；
图18是本申请的另一实施例的显示模组的驱动方法的流程图；
图19是本申请的另一实施例的显示模组的驱动方法的流程图。
具体实施方式
大尺寸液晶显示面板多采用负型VA(Vertical Alignment，垂直取向)液晶或IPS(In-plane Switch，平面转换)液晶技术，VA型液晶技术相较于IPS液晶技术存在较高的生产效率及低制造成本的优势，但光学性质上VA型液晶技术相较于IPS液晶技术存在较明显的光学性质缺陷，尤其是大尺寸面板在商业应用方面需要较大的视角呈现。
图1是液晶显示面板中各种代表性色系的大视角与正视视角色偏变化示意图；如图1所示，当色调接近R(红)、G(绿)、B(蓝)纯色调时，存在视角观赏的色偏劣化较为明显，同时当色调接近R、G、B纯色调时，色偏现象越发明显，其原因为R、G、B纯色调存在其它颜色的成分。
示范性的解决方案是将RGB各子像素再划分为主次(Main/Sub)像素，使得整体大视角亮度随电压变化较为接近正视。图2是不区分主次像素和区别主次像素的第一对比示意图，图3是不区分主次像素和区别主次像素的第二对比示意图，参考图2和图3可知，其中，x坐标，y坐标和z坐标，分别代表三维空间的三个方向；θA表示其中主像素大电压下的预倾导角，θB表示其中次像素小电压下的预倾导角。其中，该图3中的横坐标为灰阶信号，而纵坐标为亮度信号，在大视角下，亮度随信号快速饱和，造成大视角色偏问题(图3，左侧的弧线段)，而区分主次像素可以在一定程度上改善这一问题。
液晶显示器中高电压侧视角电压对应亮度变化比例更容易趋于饱和，所以将原信号分成大电压加小电压信号可以看到如图3，正视大电压加上小电压要维持原正视信号随亮度变化,大电压看到的侧视亮度随灰阶变化如图3中Part A，小电压看到的侧视亮度随灰阶变化如图3中Part B,这样侧视合成看起来的亮度随灰阶变化就较为贴近正视亮度随灰阶变化的关系,所以视角亮度随信号变化关系接近正视原信号亮度随信号变化,使得视角获得改善。
这种藉由空间上主次像素给予不同的驱动电压来解决视角色偏得缺陷，这样得像素设计往往需要再设计金属走线或TFT(Thin Film Transistor，薄膜晶体管)元件来驱动次像素，造成可透光开口区牺牲，影响面板穿透率，直接造成背光成本的提升。
下面参考附图和可选的实施例对本申请作详细说明。
如图4所示，本申请公开了一种显示装置300，包括下述的显示模组的驱动系统100及显示模组200。其中，显示模组200包括显示面板和背光模组。
如图5、图6和图7所示，本申请还公开了一种显示模组的驱动系统100，下述的显示模组的驱动方法，应用于本申请公开的显示模组的驱动系统100；所述显示模组的驱动系统100包括：同步驱动的显示面板的驱动电路110，以及背光模组的驱动电路120：
所述背光模组包括至少一个背光分区，每个背光分区包括独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
所述显示面板的驱动电路110包括接收器111、调整器112、转换器113以及驱动器114；所述接收器111接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号；所述调整器112通过预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号；所述转换器113将第二色饱和度信号转换为第二色彩信号；所述驱动器114使用第二色彩信号驱动显示面板；
所述背光模组的驱动电路120包括光源接收器121、光源确定器123、光源调整器124以及光源驱动器125；所述光源接收器121接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号；所述光源确定器123确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数；所述光源调整器124使用光源调整系数对最小颜色光源进行调整得到第四亮度值；所述光源驱动器125使用第四亮度值对最小颜色光源进行驱动。
如图8和图9所示，本申请还公开了一种显示模组的驱动方法，包括同步驱动的显示面板驱动过程，以及背光模组驱动过程：
所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
所述显示面板的驱动过程包括步骤：
S11：接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度(HSV)空间信号；
S12：使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号；
S13：将第二色饱和度信号转换为第二色彩信号；
S14：使用第二色彩信号驱动显示面板；
所述背光模组的驱动过程包括步骤：
S21：接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号；
S22：确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数；
S23：使用光源调整系数对最小颜色光源进行调整得到第四亮度值；
S24：使用第四亮度值对最小颜色光源进行驱动。
相对于将显示面板的像素划分为主次像素来改善色偏问题的方案；示例性的技术是，对第一色饱和度进行调整，得到的第二色饱和度对应转换为第二色彩信号，应用第二色彩信号对显示面板进行驱动，色偏问题能够得到很好的改善；但是，由于对色饱和度值进行了调整，因而造成了画质饱和度缺失；本申请根据第一色饱和度和第二色饱和度信号获取光源调整系数来对最小颜色光源来调整光源亮度，改善了针对色饱和度受到损失的色调，辅以调整后的光源强度，甚至可以使得调整后的色点回到原饱和色点，在降低了视角色偏的同时，维持了色彩纯度表现，其中色彩信号可以为红绿蓝三原色信号。具体的第一色彩信号可以为第一红绿蓝三原色信号，第二色彩信号可以为第二红绿蓝三原色信号。
所述使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号的步骤包括：
所述第二色饱和度信号S’n_i,j由第一色饱和度信号Sn_i,j通过如下公式得到的：
S’n_i,j＝a×S 4n_i,j+b×S 3n_i,j+c×S 2n_i,j+d×Sn_i,j+e；
其中，a，b，c，d，e为预设调整系数；
所述将第二色饱和度信号转换为第二色彩信号的步骤包括：将第二色饱和度信号转换得到第二色调色饱和度亮度空间信号，根据第二色调色饱和度亮度空间信号调低亮度归一化信号中的最小值，以得到第二亮度归一化信号；
根据第二亮度归一化信号转换得到第二色彩信号。
其中，所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤还包括：确定第一颜色光源、第二颜色光源和第三颜色光源中的次大颜色光源和最小颜色光源；根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数和次大颜色光源对应的光源调整系数；
所述使用光源调整系数对最小颜色光源进行调整得到第四亮度值；使用第四亮度值对最小颜色光源进行驱动的步骤包括：使用最小颜色光源对应的光源调整系数对最小颜色光源进行调整得到第四亮度值，并使用次大颜色光源对应的光源调整系数对次大颜色光源进行调整得到第五亮度值；使用第四亮度值对最小颜色光源进行驱动，并使用第五亮度值对次大颜色光源进行驱动。
本申请不止使用第四亮度值驱动最小颜色光源，同时也使用第五亮度值驱动次大颜色光源，使得最小颜色光源和次大颜色光源都能够实现对对应显示不足的色调进行强化，使其回到原饱和色点，维持了最小颜色光源和次大颜色光源对应的色调的色彩纯度。
另外，所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤还包括：确定第一颜色光源、第二颜色光源和第三颜色光源中的最大颜色光源、次大颜色光源和最小颜色光源；根据第一色饱和度信号、第二色饱和度信号获取最大颜色光源对应的光源调整系数、次大颜色光源对应的光源调整系数和最小颜色光源对应的光源调整系数；
所述使用光源调整系数对最小颜色光源进行调整得到第四亮度值；使用第四亮度值对最小颜色光源进行驱动的步骤包括：使用最小颜色光源对应的光源调整系数对最小颜色光源进行调整得到第四亮度值；使用次大颜色光源对应的光源调整系数对次大颜色光源进行调整得到第五亮度值；使用最大颜色光源对应的光源调整系数对最大颜色光源进行调整得到第六亮度值；使用第四亮度值对最小颜色光源进行驱动；使用第五亮度值对次大颜色光源进行驱动；使用第六亮度值对最大颜色光源进行驱动。
使用第四亮度值驱动最小颜色光源，第五亮度值驱动次大颜色光源，同时也使用第六亮度值驱动最大颜色光源，使得最小颜色光源、次大颜色光源和最大颜色光源都能够实现对对应显示不足的色调进行强化，使其回到原饱和色点，维持了最小颜色光源、次大颜色光源和最大颜色光源对应的色调的色彩纯度。
所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤包括：
获取第一色饱和度信号对应的第一亮度归一化信号，分别计算得到第一红色亮度归一化信号的平均信号，第一绿色亮度归一化信号的平均信号和第一蓝色亮度归一化信号的平均信号中的第一最大信号、第一次大信号和第一最小信号：
获取第二色饱和度信号对应的第二亮度归一化信号，分别计算背光分区对应的所有得到第二红色亮度归一化信号的平均值，第二绿色亮度归一化信号的平均值和第二蓝色亮度归一化信号的平均值中的第二最大信号、第二次大信号和第二最小信号；
根据第一最小信号和第二最小信号获取最小颜色光源对应的第一光源调整系数；
根据第一次大信号和第二次大信号获取次大颜色光源对应的第二光源调整系数；
其中，所述背光模组为直下式背光；
所述直下式背光划分为等多个背光分区，每个背光分区有独立的红色光源、绿色光源和蓝色光源；
所述第一亮度归一化信号包括第一红色亮度归一化信号、第一绿色亮度归一化信号和第一蓝色亮度归一化信号；
所述第二亮度归一化信号包括第二红色亮度归一化信号、第二绿色亮度归一化信号和第二蓝色亮度归一化信号。
通过对第一色饱和度信号对应的红、绿、蓝色调的平均信号中的第一最大信号、第一次大信号和第一最小信号，以及第二色饱和度信号(通过对第一色饱和度信号调节后得到的信号)对应的红、绿、蓝色调的平均信号中的第二最大信号、第二次大信号和第二最小信号的比较，得到第一光源调整系数和第二光源调整系数，实现对光源的针对性调整，使得光源可以准确的根据第一最小信号和第一次大信号所下降的幅度，而对应补充光源的强度，以达到即使对色饱和度调整后，依然可以达到平衡的目的；通过光源的辅助，使得色点可以回到原饱和色点，在降低显示面板的色偏的同时，维持色彩纯度表现。
所述第一最大信号maxn_ave、第一次大信号midn_ave、第一最小信号minn_ave、第一红色亮度归一化信号的平均信号rn_ave、第一绿色亮度归一化信号的平均信号gn_ave和第一蓝色亮度归一化信号的平均信号bn_ave的关系满足如下公式：maxn_ave＝Max(rn_ave、gn_ave、bn_ave)；midn_ave＝Mid(rn_ave、gn_ave、bn_ave)；minn_ave＝Min(rn_ave、gn_ave、bn_ave)；
所述第二最大信号max’n_ave、第一次大信号mid’n_ave、第一最小信号min’n_ave、第一红色亮度归一化信号的平均信号r’n_ave、第一绿色亮度归一化信号的平均信号g’n_ave和第一蓝色亮度归一化信号的平均信号b’n_ave的关系满足如下公式：max’n_ave＝Max(r’n_ave、g’n_ave、b’n_ave)；mid’n_ave＝Mid(r’n_ave、g’n_ave、b’n_ave)；min’n_ave＝Min(r’n_ave、g’n_ave、b’n_ave)。本申请的第一最大信号maxn_ave、第一次大信号midn_ave、第一最小信号minn_ave、第二最大信号max’n_ave、第一次大信号mid’n_ave和第一最小信号min’n_ave均是通过计算得出，提高了本申请对光源调整的准确性。
图10是本申请的一实施例的直下式显示模组的示意图，如图10所示，背光分区对应的 第一红色亮度归一化信号分别为：rn_1,1、rn_1,2、…、rn_i,j、背光分区对应的第一绿色亮度归一化信号分别为：gn_1,1、gn_1,2、…、gn_i,j、背光分区对应的第一蓝色亮度归一化信号分别为：bn_1,1、bn_1,2、…、bn_i,j、第一红色亮度归一化信号的平均信号rn_ave、第一绿色亮度归一化信号的平均信号gn_ave和第一蓝色亮度归一化信号的平均信号bn_ave的关系满足如下公式：rn_ave＝Average(rn_1,1、rn_1,2、…、rn_i,j)；
gn_ave＝Average(gn_1,1、gn_1,2、…、gn_i,j)；
bn_ave＝Average(bn_1,1、bn_1,2、…、bn_i,j)；
背光分区对应的第二红色亮度归一化信号分别为：r’n_1,1、r’n_1,2、…、r’n_i,j、背光分区对应的第二绿色亮度归一化信号分别为g’n_1,1、g’n_1,2、…、g’n_i,j、背光分区对应的第二蓝色亮度归一化信号分别为b’n_1,1、b’n_1,2、…、b’n_i,j、第二红色亮度归一化信号的平均信号r’n_ave、第二绿色亮度归一化信号的平均信号g’n_ave和第二蓝色亮度归一化信号的平均信号b’n_ave的关系满足如下公式：
r’n_ave＝Average(r’n_1,1、r’n_1,2、…、r’n_i,j)；
g’n_ave＝Average(g’n_1,1、g’n_1,2、…、g’n_i,j)；
b’n_ave＝Average(b’n_1,1、b’n_1,2、…、b’n_i,j)。
通过对每一个调整前后的红、绿、蓝亮度归一化信号的计算，分别得出第一红色亮度归一化信号的平均信号、第一绿色亮度归一化信号的平均信号、第一蓝色亮度归一化信号的平均信号、第二红色亮度归一化信号的平均信号、第二绿色亮度归一化信号的平均信号和第二蓝色亮度归一化信号的平均信号，本方案的计算方式，关注到了每一个像素的亮度归一化信号的变化，使得计算出的结构具有代表性和准确性，实现对光源准确高效的调节，使得调整后的光源显示出的光强度与预想的具有较高的相合度。
另外，例如当第一亮度归一化信号计算的色调满足：0<Hn_i,j<30(即以红色为主色调)时，第一次大亮度归一化信号和第一最小亮度归一化信号维持,gn_i,j-bn_i,j＝g’n_i,j–b’n_i,j的固定亮度差异。
设第一光源调整系数为x，第二光源调整系数为y，则满足如下公式：midn_ave＝x×mid’n_ave，minn_ave＝y×min’n_ave。通过公式的计算，得出信号变化比例，从而能够对应的推算出所需要调整的光源的比例。此外，本申请还可以根据第一最大信号和第二最大信号获取最大颜色光源对应的第三光源调整系数，设第三光源调整系数为z，则满足：maxn_ave＝x×max’n_ave。
在显示面板的驱动过程中，所述接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号的步骤包括：第一色彩信号的输入信号为0,1,…255的8bit灰阶数位信号，各灰阶信号对应于255输入第一亮度归一化信号(以255灰阶为最大亮度)分别为r、g、b；其中，
r＝(R/255)^γr、g＝(G/255)^γg、b＝(B/255)^γb；γr、γg、γb为伽马信号；
如图11所示，H为颜色代表，由0 0～360 0代表不同色相颜色呈现，其中定义0 0为红色，120 0为绿色，240 0为蓝色；
将亮度归一化信号r、g、b转换成色调h及色饱和度信号s的公式如下：
Figure PCTCN2020078391-appb-000001
Figure PCTCN2020078391-appb-000002
其中，max表示r/g/b中的最大值，min表示r/g/b中的最小值。
图12为色饱和度信号和第二色饱和度信号变化的示意图，如图12所示，所述使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号Sn_i,j进行调整，得到第二色饱和度信号S’n_i,j的步骤包括：所述第二色饱和度信号S’n_i,j由第一色饱和度信号Sn_i,j通过如下公式得到的：
S’n_i,j＝a×S 4n_i,j+b×S 3n_i,j+c×S 2n_i,j+d×Sn_i,j+e，其中，a，b，c，d，e为预设调整系数，其为常数；a，b，c，d，e可根据实际需要进行调整。
所述将第二色饱和度信号转换为第二色彩信号的步骤包括：将第二色饱和度信号转换得到第二色调色饱和度亮度空间信号，根据第二色调色饱和度亮度空间信号调低亮度归一化信号中的最小值，以得到第二亮度归一化信号；
根据第二亮度归一化信号转换得到第二色彩信号。
在一实施例中，本申请也可以将色调H分为m个色调区间；图13为本实施例的色饱和度信号和第二色饱和度信号变化的示意图，如图13所示，根据色调区间获得预设调整系数a(H(m))、b(H(m))、c(H(m))、d(H(m))、e(H(m))；其中，色偏越严重的调整系数越大；所述色饱和度信号s和色调区间对应的第二色饱和度信号S’(H(m),S)满足如下公式：
Figure PCTCN2020078391-appb-000003
其中，a(H(m))、b(H(m))、c(H(m))、d(H(m))、e(H(m))为色调区间对饱和度调整常数。
将色调(H)划分为多个区间，不同的区间，色偏程度不同，根据不同的区间对色饱和度采用不同的调整，从而使得显示面板的色彩鲜艳度提升的同时，色偏的调整更加均匀。
所述将第二色饱和度信号转换为第二色彩信号的步骤包括：第二色饱和度信号S’n_i,j转换得到第二亮度归一化信号，将第二亮度归一化信号r’，g’，b’通过如下公式转换得到第二色彩信号R’，G’，B’：
R’＝255×(r’) 1/γr、G’＝255×(g’) 1/γg、B’＝255×(b’) 1/γb。
在使用第二红绿蓝三原色驱动显示面板的同时，使用第四亮度值驱动最小颜色光源，使用第五亮度值驱动次大颜色光源。
图14为色饱和度信号和第二色饱和度信号的色差的变化示意图；图15为色饱和度信号和第二色饱和度信号的不同颜色的色差的变化示意图；综上可知，调低了混色的成分，而增加了主色调的色纯度从而提高了信号的色纯度，有利于改善色偏，具体的，以红色为例，当色调接近红色纯色色调时，存在视角观赏的色偏劣化较为明显，可以透过降低红色纯色色调中亮度归一化信号最小的颜色的亮度归一化信号，实现提升红色纯色色调中主色调的色饱和度的目的，减少了以红色为主色调的色调中其他颜色(绿色和蓝色)的混色，让大视角漏光颜色接近正看原色调，正视和侧视色偏的问题得以解决。
另外，同样以红色为例，在红色纯色色调中，红色为主色调；本申请也可以通过调高在红色纯色色调中的其他颜色的亮度归一化信号中的最小亮度归一化信号，从而降低了以红色为主色调的色饱和度；如此会使得混色接近白色中性色，中性色的色偏会达到色偏下降主要是因为让红绿蓝三原色都漏光，这样三原色漏光颜色混合就不会产生颜色，也就是正侧视漏光颜色为中性色。
作为本申请的另一实施例，如图5、图16、图17所示，本申请还公开了一种显示模组的驱动系统100，使用下述的显示模组的驱动方法，包括：同步驱动的显示面板的驱动电路110，以及背光模组的驱动电路120：所述背光模组包括至少一个背光分区，每个背光分区包括独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
所述显示面板的驱动电路110包括：接收器111、调整器112和驱动器113；所述接收器111接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号；所述调整器112使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到色偏改善的第二色饱和度信号以及对应第二色饱和度信号的第二亮度归一化信号；所述驱动器113将第二亮度归一化信号转换为第二色彩信号，使用第二色彩信号驱动显示面板；
所述背光模组的驱动电路120包括：光源接收器121、光源计算器122、光源确定器123、光源调整器124和光源驱动器125；所述光源接收器121接收显示面板对应的第一色彩信号，并计算背光分区所有像素对应的第一色饱和度信号和第二色饱和度信号；所述光源计算器122分别计算背光分区对应的所有的第一色饱和度信号的平均信号和第二色饱和度信号的平均信号；所述光源确定器123确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数；所述光源调整器124使用最小光源调整系数对最小颜色光源进行调整得到第四亮度值，所述光源驱动器125使用第四亮度值对最小颜色光源进行驱动。
所述光源调整器包括第一光源调整器和第二光源调整器，所述第一光源调整器确定上述最小光源及获得最小光源调整系数；所述第二光源调整器确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一亮度归一化信号和第二亮度归一化信号获取次大颜色光源对应的次大光源调整系数；所述光源驱动器包括第一光源驱动器和第二光源驱动器，所述第一光源驱动器使用最小光源调整系数对最小颜色光源进行调整得到第四亮度值，使用第四亮度值对最小颜色光源进行驱动；所述第二光源驱动器使用次大光源调整系数对次大颜色光源进行调整得到第五亮度值，使用第五亮度值对次大颜色光源进行驱动。
对应的，如图18和图19所示，本申请还公开了一种显示模组的驱动方法，包括同步驱动的显示面板的驱动过程，以及背光模组的驱动过程：
所述背光模组包括至少一个背光分区，每个背光分区包括独立控制的第一颜色光源、第 二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
所述显示面板的驱动过程包括步骤：
S31：接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度(HSV)空间信号；
S32：使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到色偏改善的第二色饱和度信号以及对应第二色饱和度信号的第二亮度归一化信号；
S33：将第二色饱和度信号转换为第二色彩信号，使用第二色彩信号驱动显示面板；
所述背光模组的驱动过程包括步骤：
S41：接收显示面板对应的第一色彩信号，并计算背光分区所有像素对应的第一色饱和度信号和第二色饱和度信号；
S42：分别计算背光分区对应的所有的第一色饱和度信号的平均信号和第二色饱和度信号的平均信号；
S43：确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数；
S44：使用最小光源调整系数对最小颜色光源进行调整得到第四亮度值，使用第四亮度值对最小颜色光源进行驱动。
相对于将显示面板的像素划分为主次像素来改善色偏问题的方案；示例性的技术是，对第一色饱和度进行调整，得到的第二色饱和度对应转换为第二色彩信号，应用第二色彩信号对显示面板进行驱动，色偏问题能够得到很好的改善；但是，由于对色饱和度值进行了调整，因而造成了画质饱和度缺失；本申请根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小光源调整系数来对最小颜色光源来调整光源亮度，其中，光源强度的调整以一个背光分区为单位，改善了针对色饱和度受到损失的色调，辅以调整后的光源强度，使得调整后的色饱和度回到原色饱和度，在降低了视角色偏的同时，维持了色彩纯度表现，其中，色彩信号可以为红绿蓝三原色信号，具体的，第一色彩信号可以为第一红绿蓝三原色信号，第二色彩信号可以为第二红绿蓝三原色信号。
所述根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数的步骤包括：所述最小光源调整系数 y满足如下公式：y＝(Sn_ave-1)/(S’n_ave-1)，其中，Sn_ave为第一色饱和度信号的平均信号，S’n_ave为第二色饱和度信号的平均信号。本公式中根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号，以背光分区为单位，计算出调整后的第一色饱和度信号的平均信号，和第二色饱和度信号的平均信号的差异程度，而后以此为基础来计算出最小光源调整系数的数值，根据如此计算而得出的最小光源调整系数，对最小颜色光源进行整体调节，则可以通过控制最小颜色光源的光源强度，使得调整后的光源强度与最小颜色光源对应的第二色饱和度信号结合，表现出第一色饱和度信号的所表现出的色彩显示情况，在改善色偏的同时，改善甚至维持色彩的艳丽度。
所述第一亮度归一化信号包括第一红色亮度归一化信号rn_i,j、第一绿色亮度归一化信号gn_i,j和第一蓝色亮度归一化信号bn_i,j；所述第二亮度归一化信号包括第二红色亮度归一化信号r’n_i,j、第二绿色亮度归一化信号g’n_i,j和第二蓝色亮度归一化信号b’n_i,j；
所述使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号以及对应第二色饱和度信号的第二亮度归一化信号的步骤包括：根据如下公式将第一色饱和度信号Sn_i,j调整为第二色饱和度信号S’n_i,j：S’n_i,j＝a×S 4n_i,j+b×S 3n_i,j+c×S 2n_i,j+d×Sn_i,j+e；其中，a，b，c，d，e为预设调整系数，且为常数；根据第一色饱和度信号Sn_i,j和第二色饱和度信号S’n_i,j，对第一亮度归一化信号中的最小值进行调整，获得第二亮度归一化信号，具体公式如下：
根据Sn_i,j＝1-minn_i,j/maxn_i,j，保持maxn_i,j不变，仅调低minn_i,j，则获得第二色饱和度信号Sn_i,j’＝1-min’n_i,j/maxn_i,j，以及第二亮度归一化信号中的最小值min’n_i,j；
其中，maxn_i,j＝Max(rn_i,j,gn_i,j,bn_i,j)＝Max(r’n_i,j，g’n_i,j，b’n_i,j)；mid_i,j＝Mid(rn_i,j,gn_i,j,bn_i,j)；minn_i,j＝Min(rn_i,j，gn_i,j，bn_i,j)；mid’n_i,j＝Mid(r’n_i,j，g’n_i,j，b’n_i,j)；min’n_i,j＝Min(r’n_i,j，g’n_i,j，b’n_i,j)；所述分别计算背光分区对应的所有的第一色饱和度信号的平均信号和第二色饱和度信号的平均信号的步骤包括：计算背光分区内所有第一饱和度信号的平均值：Sn_ave＝Average(Sn_1,1、Sn_1,2、…..、Sn_i,j)；计算背光分区内所有第二饱和度信号的平均值：S’n_ave＝Average(S’n_1,1、S’n_1,2、…..、S’n_i,j)。
通过调低每个第一亮度归一化信号中的最小值minn_i,j，得到第二亮度归一化信号，降低了主色调以外其他颜色的成分，即减少混色，从而有效的改善了色偏的情况；降低最小值minn_i,j,提高色饱和度，即将混色中的其他颜色去掉，只保留主色调，让大视角漏光颜色就接近正看原色调，同样正视侧视色偏的问题就能解决，也就是正侧视漏光颜色为三原色之一种；
另外，第一色饱和度信号转换为第二色饱和度信号的公式中的预设调整系数也可以根据实际进行改变；例如，在需要时通过调高minn_i,j，使得饱和度降低也是可以的，此时会使得混色接近白色中性色，中性色的色偏会达到色偏下降主要是因为让RGB三原色都漏光，这样三原色漏光颜色混合就不会产生颜色，也就是正侧视漏光颜色为中性色。
使用最小光源调整系数对最小颜色光源进行调整之后，获取所述背光分区所有像素对应的第三色饱和度信号并计算得到第三色饱和度平均值；所述根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数的步骤包括：获取最小光源调整系数y，使得背光分区对应的第二色饱和度信号的平均信号S’n_ave在对最小颜色光源调整之后得到的第三色饱和度平均值S”n_ave满足如下公式：S”n_ave＝Sn_ave；根据如下三个公式：S”n_ave＝1-min’*y/maxn_ave；S’n_ave＝1-min’/maxn_ave；Sn_ave＝1-minn_ave/maxn_ave；计算得到：y＝(Sn_ave-1)/(S’n_ave-1)；
其中，minn_ave为背光分区的实际的第一红色亮度归一化信号的平均值、第一绿色亮度归一化信号的平均值和和第一蓝色亮度归一化信号的平均值中的第一最小平均值；maxn_ave为背光分区的第二红色亮度归一化信号的平均值、第二绿色亮度归一化信号的平均值和和第二蓝色亮度归一化信号的平均值中的第一最大平均值；min’是通过假设maxn_ave不变而计算得到的第二亮度归一化信号的平均值中的最小信号。
在对第一色饱和度信号进行调整得到第二色饱和度信号后，再对第二色饱和度信号对应的最小光源强度进行调整，得到显示情况为第三色饱和度信号的色彩表现，对应的最小光源调整系数为y，而调整后的第三色饱和度信号的平均信号与第一色饱和度信号的平均信号相等，使得第三色饱和度信号的色彩表现的程度与第一色饱和度信号的色彩表现程度一致，在改善色偏的基础上，维持了色彩表现。
所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数的步骤还包括：确定第一颜色光源、第二颜色光源和第三颜色光源中的次大颜色光源；根据第一亮度归一化信号和第二亮度归一化信号获得次大光源调整系数；所述使用最小光源调整系数对最小颜色光源进行调整得到第四亮度值，使用第四亮度值对最小颜色光源进行驱动的步骤还包括：使用次大光源调整系数对次大颜色光源进行调整得到第五亮度值，使用第五亮度值对次大颜色光源进行驱动。
所述第一亮度归一化信号包括第一红色亮度归一化信号、第一绿色亮度归一化信号和第一蓝色亮度归一化信号；所述第二亮度归一化信号包括第二红色亮度归一化信号、第二绿色亮度归一化信号和第二蓝色亮度归一化信号；在每个背光分区中，计算第一红色亮度归一化信号的平均值，第一绿色亮度归一化信号的平均值和第一蓝色亮度归一化信号的平均值中的第一最大平均值、第一次大平均值和第一最小平均值；计算第二红色亮度归一化信号的平均值、第二绿色亮度归一化信号的平均值和第二蓝色亮度归一化信号的平均值中的第二最大平均值、第二次大平均值和第二最小平均值；所述根据第一亮度归一化信号和第二亮度归一化信号获得次大光源调整系数的步骤包括：
设次大光源调整系数为x，满足如下公式：midn_ave＝x*mid’n_ave；其中，midn_ave为第一次大平均值，mid’n_ave为第二次大平均值。
通过调整次大信号对应的光源强度，如此，可以减少从第一色饱和度信号调整为第二色饱和度信号时，混色的成分对比情况，从而减少在色饱和度调整步骤带来的色调偏离问题，使得在光源调整之后，画面的色调能够趋近甚至恢复到第一色调色饱和度亮度空间信号时的色调的情况，即H”n_ave＝Hn_ave，其中，Hn_ave为第一色彩空间信号中的色调的平均值，H”n_ave为通过次大光源调整系数x，对次大光源进行调整后，所表现出的色调的平均值，即维持整体色调前后的准确性。
另外，所述根据Sn_i,j＝1-minn_i,j/maxn_i,j，保持maxn_i,j不变，仅调低minn_i,j，则获得第二色饱和度信号S’n_i,j＝1-min’n_i,j/maxn_i,j，以及第二亮度归一化信号中的最小值min’n_i,j的步骤还包括；
根据midn_i,j-minn_i,j＝mid’n_i,j–min’n_i,j，计算得到第二亮度归一化信号中的次大值mid-min＝mid’-min’。
例如：当规一化亮度信号r、g、b计算色调满足0<Hn_i,j<30时，则次亮度信号减最小亮度信号维持,gn_i,j-bn_i,j＝g’n_i,j–b’n_i,j的固定亮度差异，另外原规一化亮度信号换算饱和度信号Sn_i,j＝1-bn_i,j/rn_i,j，由Sn_i,j变成S’n_i,j，转换后饱和度S’n_i,j＝1-b’n_i,j/rn_i,j可以推算第二亮度归一化信号中的最小信号b’n_i,j因此可推算第二亮度归一化信号中的次大信号g’n_i,j。本方案维持了调整前后的次亮度信号和最小亮度信号之间的亮度差，与上述使用次大光源调整系数对次大颜色光源进行调整，其中，次大光源调整系数x满足midn_ave＝x*mid’n_ave的方案相结合；，进一步改善了在 色饱和度调整阶段带来的色调偏离问题，对色调起到校正的功能。
所述第一最大平均值maxn_ave、第一次大平均值midn_ave、第一最小平均值minn_ave、第一红色亮度归一化信号的平均值rn_ave、第一绿色亮度归一化信号的平均值gn_ave和第一蓝色亮度归一化信号的平均值bn_ave的关系满足如下公式：
maxn_ave＝Max(rn_ave、gn_ave、bn_ave)；
midn_ave＝Mid(rn_ave、gn_ave、bn_ave)；
minn_ave＝Min(rn_ave、gn_ave、bn_ave)；
所述第二最大平均值max’n_ave、第一次大平均值mid’n_ave、第一最小平均值min’n_ave、第一红色亮度归一化信号的平均值r’n_ave、第一绿色亮度归一化信号的平均值g’n_ave和第一蓝色亮度归一化信号的平均值b’n_ave的关系满足如下公式：
max’n_ave＝Max(r’n_ave、g’n_ave、b’n_ave)；
mid’n_ave＝Mid(r’n_ave、g’n_ave、b’n_ave)；
min’n_ave＝Min(r’n_ave、g’n_ave、b’n_ave)。
背光分区对应的第一红色亮度归一化信号分别为：rn_1,1、rn_1,2、…、rn_i,j、背光分区对应的第一绿色亮度归一化信号分别为：gn_1,1、gn_1,2、…、gn_i,j、背光分区对应的第一蓝色亮度归一化信号分别为：bn_1,1、bn_1,2、…、bn_i,j；第一红色亮度归一化信号的平均值rn_ave、第一绿色亮度归一化信号的平均值gn_ave和第一蓝色亮度归一化信号的平均值bn_ave的关系满足如下公式：
rn_ave＝Average(rn_1,1、rn_1,2、…、rn_i,j)；
gn_ave＝Average(gn_1,1、gn_1,2、…、gn_i,j)；
bn_ave＝Average(bn_1,1、bn_1,2、…、bn_i,j)；
背光分区对应的第二红色亮度归一化信号分别为：r’n_1,1、r’n_1,2、…、r’n_i,j、背光分区对应的第二绿色亮度归一化信号分别为：g’n_1,1、g’n_1,2、…、g’n_i,j、背光分区对应的第二蓝色亮度归一化信号分别为：b’n_1,1、b’n_1,2、…、b’n_i,j；第二红色亮度归一化信号的平均值r’n_ave、第二绿色亮度归一化信号的平均值g’n_ave和第二蓝色亮度归一化信号的平均值b’n_ave的关系满足如下公式：
r’n_ave＝Average(r’n_1,1、r’n_1,2、…、r’n_i,j)；
g’n_ave＝Average(g’n_1,1、g’n_1,2、…、g’n_i,j)；
b’n_ave＝Average(b’n_1,1、b’n_1,2、…、b’n_i,j)。
本申请通过精确的计算，而得到第一红色亮度归一化信号的平均值、第一绿色亮度归一化信号的平均值、第一蓝色亮度归一化信号的平均值、第二红色亮度归一化信号的平均值、第二绿色亮度归一化信号的平均值和第二蓝色亮度归一化信号的平均值，精确到每个像素所 对应的亮度归一化信号的改变情况，根据精确计算得到的结果也更准确，调整效果更好。
图10为直下式显示模组的示意图；如图10所示，显示面板划分为多个背光分区，每个背光分区对应设置独立控制的第一颜色光源、第二颜色光源和第三颜色光源，第一颜色光源、第二颜色光源和第三颜色光源与显示区的像素对应设置。
在显示面板的驱动过程中，所述接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号的步骤包括：第一色彩信号的输入信号为0,1,…255的8bit灰阶数位信号，各灰阶信号对应于255输入第一亮度归一化信号(以255灰阶为最大亮度)分别为r、g、b；其中，
r＝(R/255)^γr、g＝(G/255)^γg、b＝(B/255)^γb；γr、γg、γb为伽马信号；
如图11所示，H为颜色代表，由0 0～360 0代表不同色相颜色呈现，其中定义0 0为红色，120 0为绿色，240 0为蓝色；
将亮度归一化信号r、g、b转换成色调h及色饱和度信号s的公式如下：
Figure PCTCN2020078391-appb-000004
Figure PCTCN2020078391-appb-000005
其中，max表示r/g/b中的最大值，min表示r/g/b中的最小值。
图12为色饱和度信号和第二色饱和度信号变化的示意图，如图12所示，所述使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号Sn_i,j进行调整，得到第二色饱和度信号S’n_i,j的步骤包括：所述第二色饱和度信号S’n_i,j由第一色饱和度信号Sn_i,j通过如下公式得到的：
S’n_i,j＝a×S 4n_i,j+b×S 3n_i,j+c×S 2n_i,j+d×Sn_i,j+e，其中，a，b，c，d，e为预设调整系数，其为常数；a，b，c，d，e可根据实际需要进行调整。
所述将第二色饱和度信号转换为第二色彩信号的步骤包括：将第二色饱和度信号转换得到第二色调色饱和度亮度空间信号，根据第二色调色饱和度亮度空间信号调低亮度归一化信号中的最小值，以得到第二亮度归一化信号；
根据第二亮度归一化信号转换得到第二色彩信号。
在一实施例中，本申请也可以将色调H分为m个色调区间；图13为本实施例的色饱和度信号和第二色饱和度信号变化的示意图，如图13所示，根据色调区间获得预设调整系数a(H(m))、b(H(m))、c(H(m))、d(H(m))、e(H(m))；其中，色偏越严重的调整系数越大；所 述色饱和度信号s和色调区间对应的第二色饱和度信号S’(H(m),S)满足如下公式：
Figure PCTCN2020078391-appb-000006
其中，a(H(m))、b(H(m))、c(H(m))、d(H(m))、e(H(m))为色调区间对饱和度调整常数。
将色调(H)划分为多个区间，不同的区间，色偏程度不同，根据不同的区间对色饱和度采用不同的调整，从而使得显示面板的色彩鲜艳度提升的同时，色偏的调整更加均匀。
所述将第二色饱和度信号转换为第二色彩信号的步骤包括：第二色饱和度信号S’n_i,j转换得到第二亮度归一化信号，将第二亮度归一化信号r’，g’，b’通过如下公式转换得到第二色彩信号R’，G’，B’：
R’＝255×(r’) 1/γr、G’＝255×(g’) 1/γg、B’＝255×(b’) 1/γb。
在使用第二色彩信号驱动显示面板的同时，使用第四亮度值驱动最小颜色光源，使用第五亮度值驱动次大颜色光源。
图14为色饱和度信号和第二色饱和度信号的色差的变化示意图；图15为色饱和度信号和第二色饱和度信号的不同颜色的色差的变化示意图；综上可知，调低了混色的成分，而增加了主色调的色纯度从而提高了信号的色纯度，有利于改善色偏，具体的，以红色为例，当色调接近红色纯色色调时，存在视角观赏的色偏劣化较为明显，可以透过降低红色纯色色调中亮度归一化信号最小的颜色的亮度归一化信号，实现提升红色纯色色调中主色调的色饱和度的目的，减少了以红色为主色调的色调中其他颜色(绿色和蓝色)的混色，让大视角漏光颜色接近正看原色调，正视和侧视色偏的问题得以解决。
需要说明的是，本方案中涉及到的各步骤的限定，在不影响具体方案实施的前提下，并不认定为对步骤先后顺序做出限定，写在前面的步骤可以是在先执行的，也可以是在后执行的，甚至也可以是同时执行的，只要能实施本方案，都应当视为属于本申请的保护范围。
本申请的技术方案可以广泛用于各种显示面板，如TN(Twisted Nematic，扭曲向列型)显示面板、IPS(In-Plane Switching，平面转换型)显示面板、VA(Vertical Alignment，垂直配向型)显示面板、MVA(Multi-Domain Vertical Alignment，多象限垂直配向型)显示面板，当然，也可以是其他类型的显示面板，如OLED(Organic Light-Emitting Diode，有机发光二极管)显示面板，均可适用上述方案。
以上内容是结合具体的可选实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。

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  1. 一种显示模组的驱动方法，包括同步驱动的显示面板的驱动过程，以及背光模组的驱动过程：
    所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
    所述显示面板的驱动过程包括步骤：
    接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号；
    使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号；
    将第二色饱和度信号转换为第二色彩信号；以及
    使用第二色彩信号驱动显示面板；
    所述背光模组的驱动过程包括步骤：
    接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号；
    确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数；以及
    使用光源调整系数对最小颜色光源进行调整得到第四亮度值；使用第四亮度值对最小颜色光源进行驱动。
  2. 如权利要求1所述的一种显示模组的驱动方法，其中，所述使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号的步骤包括：
    所述第二色饱和度信号S’n_i,j由第一色饱和度信号Sn_i,j通过如下公式得到的：
    S’n_i,j＝a×S 4n_i,j+b×S 3n_i,j+c×S 2n_i,j+d×Sn_i,j+e；
    其中，a，b，c，d，e为预设调整系数，且为常数；
    所述将第二色饱和度信号转换为第二色彩信号的步骤包括：将第二色饱和度信号转换得到第二色调色饱和度亮度空间信号，根据第二色调色饱和度亮度空间信号调低亮度归一化信号中的最小值，以得到第二亮度归一化信号；以及
    根据第二亮度归一化信号转换得到第二色彩信号。
  3. 如权利要求1所述的一种显示模组的驱动方法，其中，所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤还包括：
    确定第一颜色光源、第二颜色光源和第三颜色光源中的次大颜色光源和最小颜色光源；
    根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数和次大颜色光源对应的光源调整系数；
    所述使用光源调整系数对最小颜色光源进行调整得到第四亮度值；使用第四亮度值对最小颜色光源进行驱动的步骤包括：
    使用最小颜色光源对应的光源调整系数对最小颜色光源进行调整得到第四亮度值，并使用次大颜色光源对应的光源调整系数对次大颜色光源进行调整得到第五亮度值；以及
    使用第四亮度值对最小颜色光源进行驱动，并使用第五亮度值对次大颜色光源进行驱 动。
  4. 如权利要求1所述的一种显示模组的驱动方法，其中，所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤还包括：
    确定第一颜色光源、第二颜色光源和第三颜色光源中的最大颜色光源、次大颜色光源和最小颜色光源；根据第一色饱和度信号、第二色饱和度信号获取最大颜色光源对应的光源调整系数、次大颜色光源对应的光源调整系数和最小颜色光源对应的光源调整系数；
    所述使用光源调整系数对最小颜色光源进行调整得到第四亮度值；使用第四亮度值对最小颜色光源进行驱动的步骤包括：
    使用最小颜色光源对应的光源调整系数对最小颜色光源进行调整得到第四亮度值；使用次大颜色光源对应的光源调整系数对次大颜色光源进行调整得到第五亮度值；使用最大颜色光源对应的光源调整系数对最大颜色光源进行调整得到第六亮度值；以及
    使用第四亮度值对最小颜色光源进行驱动；使用第五亮度值对次大颜色光源进行驱动；使用第六亮度值对最大颜色光源进行驱动。
  5. 如权利要求3所述的一种显示模组的驱动方法，其中，所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤包括：
    所述背光模组为直下式背光；
    所述直下式背光划分为等多个背光分区，每个背光分区有独立的红色光源、绿色光源和蓝色光源；
    所述第一亮度归一化信号包括第一红色亮度归一化信号、第一绿色亮度归一化信号和第一蓝色亮度归一化信号；
    所述第二亮度归一化信号包括第二红色亮度归一化信号、第二绿色亮度归一化信号和第二蓝色亮度归一化信号
    获取第一色饱和度信号对应的第一亮度归一化信号，分别计算得到第一红色亮度归一化信号的平均信号，第一绿色亮度归一化信号的平均信号和第一蓝色亮度归一化信号的平均信号中的第一最大信号、第一次大信号和第一最小信号；
    获取第二色饱和度信号对应的第二亮度归一化信号，分别计算得到背光分区对应的所有第二红色亮度归一化信号的平均值，第二绿色亮度归一化信号的平均值和第二蓝色亮度归一化信号的平均值中的第二最大信号、第二次大信号和第二最小信号；
    根据第一最小信号和第二最小信号获取最小颜色光源对应的第一光源调整系数；以及
    根据第一次大信号和第二次大信号获取次大颜色光源对应的第二光源调整系数。
  6. 如权利要求5所述的一种显示模组的驱动方法，其中，所述第一最大信号maxn_ave、第一次大信号midn_ave、第一最小信号minn_ave、第一红色亮度归一化信号的平均信号rn_ave、第一绿色亮度归一化信号的平均信号gn_ave和第一蓝色亮度归一化信号的平均信号bn_ave的关系满足如下公式：
    maxn_ave＝Max(rn_ave、gn_ave、bn_ave)；
    midn_ave＝Mid(rn_ave、gn_ave、bn_ave)；
    minn_ave＝Min(rn_ave、gn_ave、bn_ave)；
    所述第二最大信号max’n_ave、第一次大信号mid’n_ave、第一最小信号min’n_ave、第一红色亮度归一化信号的平均信号r’n_ave、第一绿色亮度归一化信号的平均信号g’n_ave和第一蓝色亮度归一化信号的平均信号b’n_ave的关系满足如下公式：
    max’n_ave＝Max(r’n_ave、g’n_ave、b’n_ave)；
    mid’n_ave＝Mid(r’n_ave、g’n_ave、b’n_ave)；
    min’n_ave＝Min(r’n_ave、g’n_ave、b’n_ave)。
  7. 如权利要求6所述的一种显示模组的驱动方法，其中，背光分区对应的第一红色亮度归一化信号分别为：rn_1,1、rn_1,2、…、rn_i,j、背光分区对应的第一绿色亮度归一化信号分别为：gn_1,1、gn_1,2、…、gn_i,j、背光分区对应的第一蓝色亮度归一化信号分别为：bn_1,1、bn_1,2、…、bn_i,j；第一红色亮度归一化信号的平均信号rn_ave、第一绿色亮度归一化信号的平均信号gn_ave和第一蓝色亮度归一化信号的平均信号bn_ave的关系满足如下公式：
    rn_ave＝Average(rn_1,1、rn_1,2、…、rn_i,j)；
    gn_ave＝Average(gn_1,1、gn_1,2、…、gn_i,j)；
    bn_ave＝Average(bn_1,1、bn_1,2、…、bn_i,j)；
    背光分区对应的第二红色亮度归一化信号分别为：r’n_1,1、r’n_1,2、…、r’n_i,j、背光分区对应的第二绿色亮度归一化信号分别为：g’n_1,1、g’n_1,2、…、g’n_i,j、背光分区对应的第二蓝色亮度归一化信号分别为：b’n_1,1、b’n_1,2、…、b’n_i,j；第二红色亮度归一化信号的平均信号r’n_ave、第二绿色亮度归一化信号的平均信号g’n_ave和第二蓝色亮度归一化信号的平均信号b’n_ave的关系满足如下公式：
    r’n_ave＝Average(r’n_1,1、r’n_1,2、…、r’n_i,j)；
    g’n_ave＝Average(g’n_1,1、g’n_1,2、…、g’n_i,j)；
    b’n_ave＝Average(b’n_1,1、b’n_1,2、…、b’n_i,j)。
  8. 如权利要求6所述的一种显示模组的驱动方法，其中，设第一光源调整系数为x，第二光源调整系数为y，则满足如下公式：midn_ave＝x×mid’n_ave，minn_ave＝y×min’n_ave。
  9. 如权利要求1所述的一种显示模组的驱动方法，其中，所述背光模组包括至少一个背光分区，每个背光分区包括独立控制的所述第一颜色光源、所述第二颜色光源和所述第三颜色光源。
    所述接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号的步骤后，包括：分别计算背光分区对应的所有的第一色饱和度信号的平均信号和第二色饱和度信号的平均信号；
    所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数的步骤包括：确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数。
  10. 如权利要求9所述的一种显示模组的驱动方法，其中，所述将第二色饱和度信号转换为第二色彩信号的步骤包括：将第二色饱和度信号转换为第二亮度归一化信号，将第二亮度归一化信号转换为第二色彩信号。
  11. 如权利要求10所述的一种显示模组的驱动方法，其中，所述根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数的步骤包括：
    所述最小光源调整系数y满足如下公式：
    y＝(Sn_ave-1)/(S’n_ave-1)，其中，Sn_ave为第一色饱和度信号的平均信号，S’n_ave 为第二色饱和度信号的平均信号。
  12. 如权利要求11所述的一种显示模组的驱动方法，其中，所述第一亮度归一化信号包括第一红色亮度归一化信号rn_i,j、第一绿色亮度归一化信号gn_i,j和第一蓝色亮度归一化信号bn_i,j；
    所述第二亮度归一化信号包括第二红色亮度归一化信号r’n_i,j、第二绿色亮度归一化信号g’n_i,j和第二蓝色亮度归一化信号b’n_i,j；
    所述使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号以及对应第二色饱和度信号的第二亮度归一化信号的步骤包括：
    根据如下公式将第一色饱和度信号Sn_i,j调整为第二色饱和度信号S’n_i,j：
    S’n_i,j＝a×S 4n_i,j+b×S 3n_i,j+c×S 2n_i,j+d×Sn_i,j+e；
    其中，a，b，c，d，e为预设调整系数，且为常数；
    根据第一色饱和度信号Sn_i,j和第二色饱和度信号S’n_i,j，对第一亮度归一化信号中的最小值进行调整，获得第二亮度归一化信号，具体公式如下：
    根据Sn_i,j＝1-minn_i,j/maxn_i,j，保持maxn_i,j不变，仅调低minn_i,j，则获得第二色饱和度信号Sn_i,j’＝1-min’n_i,j/maxn_i,j，以及第二亮度归一化信号中的最小值min’n_i,j；
    其中，maxn_i,j＝Max(rn_i,j,gn_i,j,bn_i,j)＝Max(r’n_i,j，g’n_i,j，b’n_i,j)；mid_i,j＝Mid(rn_i,j,gn_i,j,bn_i,j)；minn_i,j＝Min(rn_i,j，gn_i,j，bn_i,j)；mid’n_i,j＝Mid(r’n_i,j，g’n_i,j，b’n_i,j)；min’n_i,j＝Min(r’n_i,j，g’n_i,j，b’n_i,j)；
    所述分别计算背光分区对应的所有的第一色饱和度信号的平均信号和第二色饱和度信号的平均信号的步骤包括：
    计算背光分区内所有第一饱和度信号的平均值：
    Sn_ave＝Average(Sn_1,1、Sn_1,2、…..、Sn_i,j)；
    计算背光分区内所有第二饱和度信号的平均值：
    S’n_ave＝Average(S’n_1,1、S’n_1,2、…..、S’n_i,j)。
  13. 如权利要求12所述的一种显示模组的驱动方法，其中，所述使用最小光源调整系数对最小颜色光源进行调整的步骤后，包括：获取所述背光分区所有像素对应的第三色饱和度信号并计算得到第三色饱和度信号的平均信号；
    所述根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数的步骤包括：
    假设第二色饱和度信号的平均信号S’n_ave和第三色饱和度信号的平均信号S”n_ave对应的亮度归一化信号的平均值中的最大值，跟第一色饱和度信号的平均信号Sn_ave对应的第一最大平均值maxn_ave相同；
    获取最小光源调整系数y，使得背光分区对应的第二色饱和度信号的平均信号S’n_ave在对最小颜色光源调整之后得到的第三色饱和度平均值S”n_ave满足如下公式：S”n_ave＝Sn_ave，则；
    根据如下三个公式：
    S’n_ave＝1-min’/maxn_ave；
    S”n_ave＝1-min’*y/maxn_ave；
    Sn_ave＝1-minn_ave/maxn_ave；
    计算得到：
    y＝(Sn_ave-1)/(S’n_ave-1)；
    其中，minn_ave为背光分区的第一红色亮度归一化信号的平均值、第一绿色亮度归一化信号的平均值和和第一蓝色亮度归一化信号的平均值中的第一最小平均值；maxn_ave为背光分区的第二红色亮度归一化信号的平均值、第二绿色亮度归一化信号的平均值和和第二蓝色亮度归一化信号的平均值中的第一最大平均值；min’是第二亮度归一化信号对应的最小信号。
  14. 如权利要求9所述的一种显示模组的驱动方法，其中，所述确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号的平均信号和第二色饱和度信号的平均信号获取最小颜色光源对应的最小光源调整系数的步骤还包括：
    确定第一颜色光源、第二颜色光源和第三颜色光源中的次大颜色光源；根据第一亮度归一化信号和第二亮度归一化信号获得次大光源调整系数；
    所述使用最小光源调整系数对最小颜色光源进行调整得到第四亮度值，使用第四亮度值对最小颜色光源进行驱动的步骤还包括：
    使用次大光源调整系数对次大颜色光源进行调整得到第五亮度值，使用第五亮度值对次大颜色光源进行驱动。
  15. 如权利要求14所述的一种显示模组的驱动方法，其中，所述第一亮度归一化信号包括第一红色亮度归一化信号、第一绿色亮度归一化信号和第一蓝色亮度归一化信号；
    所述第二亮度归一化信号包括第二红色亮度归一化信号、第二绿色亮度归一化信号和第二蓝色亮度归一化信号；
    在每个背光分区中，计算第一红色亮度归一化信号的平均值，第一绿色亮度归一化信号的平均值和第一蓝色亮度归一化信号的平均值中的第一最大平均值、第一次大平均值和第一最小平均值；计算第二红色亮度归一化信号的平均值、第二绿色亮度归一化信号的平均值和第二蓝色亮度归一化信号的平均值中的第二最大平均值、第二次大平均值和第二最小平均值；
    所述根据第一亮度归一化信号和第二亮度归一化信号获得次大光源调整系数的步骤包括：
    设次大光源调整系数为x，满足如下公式：midn_ave＝x*mid’n_ave；其中，midn_ave为第一次大平均值，mid’n_ave为第二次大平均值。
  16. 如权利要求14所述的一种显示模组的驱动方法，其中，所述第一最大平均值maxn_ave、第一次大平均值midn_ave、第一最小平均值minn_ave、第一红色亮度归一化信号的平均值rn_ave、第一绿色亮度归一化信号的平均值gn_ave和第一蓝色亮度归一化信号的平均值bn_ave的关系满足如下公式：
    maxn_ave＝Max(rn_ave、gn_ave、bn_ave)；
    midn_ave＝Mid(rn_ave、gn_ave、bn_ave)；
    minn_ave＝Min(rn_ave、gn_ave、bn_ave)；
    所述第二最大平均值max’n_ave、第一次大平均值mid’n_ave、第一最小平均值min’n_ave、第一红色亮度归一化信号的平均值r’n_ave、第一绿色亮度归一化信号的平均值g’n_ave和第一蓝色亮度归一化信号的平均值b’n_ave的关系满足如下公式：
    max’n_ave＝Max(r’n_ave、g’n_ave、b’n_ave)；
    mid’n_ave＝Mid(r’n_ave、g’n_ave、b’n_ave)；
    min’n_ave＝Min(r’n_ave、g’n_ave、b’n_ave)。
  17. 如权利要求16所述的一种显示模组的驱动方法，其中，背光分区对应的第一红色亮度归一化信号分别为：rn_1,1、rn_1,2、…、rn_i,j、背光分区对应的第一绿色亮度归一化信号分别为：gn_1,1、gn_1,2、…、gn_i,j、背光分区对应的第一蓝色亮度归一化信号分别为：bn_1,1、bn_1,2、…、bn_i,j；第一红色亮度归一化信号的平均值rn_ave、第一绿色亮度归一化信号的平均值gn_ave和第一蓝色亮度归一化信号的平均值bn_ave的关系满足如下公式：
    rn_ave＝Average(rn_1,1、rn_1,2、…、rn_i,j)；
    gn_ave＝Average(gn_1,1、gn_1,2、…、gn_i,j)；
    bn_ave＝Average(bn_1,1、bn_1,2、…、bn_i,j)；
    背光分区对应的第二红色亮度归一化信号分别为：r’n_1,1、r’n_1,2、…、r’n_i,j、背光分区对应的第二绿色亮度归一化信号分别为：g’n_1,1、g’n_1,2、…、g’n_i,j、背光分区对应的第二蓝色亮度归一化信号分别为：b’n_1,1、b’n_1,2、…、b’n_i,j；第二红色亮度归一化信号的平均值r’n_ave、第二绿色亮度归一化信号的平均值g’n_ave和第二蓝色亮度归一化信号的平均值b’n_ave的关系满足如下公式：
    r’n_ave＝Average(r’n_1,1、r’n_1,2、…、r’n_i,j)；
    g’n_ave＝Average(g’n_1,1、g’n_1,2、…、g’n_i,j)；
    b’n_ave＝Average(b’n_1,1、b’n_1,2、…、b’n_i,j)。
  18. 一种使用显示模组的驱动方法的显示模组的驱动系统，包括：同步驱动的显示面板的驱动电路，以及背光模组的驱动电路：
    所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
    所述显示面板的驱动电路包括：
    接收器，接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号；
    调整器，使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号；
    转换器，将第二色饱和度信号转换为第二色彩信号；以及
    驱动器，使用第二色彩信号驱动显示面板；
    所述背光模组的驱动电路包括：
    光源接收器，接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号；
    光源确定器，确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数；
    光源调整器，使用光源调整系数对最小颜色光源进行调整得到第四亮度值；以及
    光源驱动器，使用第四亮度值对最小颜色光源进行驱动。
  19. 如权利要求18所述的一种使用显示模组的驱动方法的显示模组的驱动系统，其中，
    所述背光模组的驱动电路还包括：
    光源计算器，分别计算背光分区对应的所有的第一色饱和度信号的平均信号和第二色饱和度信号的平均信号；
  20. 一种显示装置，包括显示模组的驱动系统和显示模组；所述显示模组的驱动系统包括：同步驱动的显示面板的驱动电路，以及背光模组的驱动电路：
    所述背光模组包括多个独立控制的第一颜色光源、第二颜色光源和第三颜色光源；所述第一颜色光源对应的光源亮度为第一亮度值，所述第二颜色光源对应的光源亮度为第二亮度值，所述第三颜色光源对应的光源亮度为第三亮度值；
    所述显示面板的驱动电路包括：
    接收器，接收显示面板对应的第一色彩信号，将第一色彩信号转化为第一亮度归一化信号，将第一亮度归一化信号转化为第一色调色饱和度亮度空间信号；
    调整器，使用预设调整系数对第一色调色饱和度亮度空间信号的第一色饱和度信号进行调整，得到第二色饱和度信号；
    转换器，将第二色饱和度信号转换为第二色彩信号；以及
    驱动器，使用第二色彩信号驱动显示面板；
    所述背光模组的驱动电路包括：
    光源计算器，接收显示面板对应的第一色彩信号，并获第一色饱和度信号和第二色饱和度信号；
    光源确定器，确定第一颜色光源、第二颜色光源和第三颜色光源中的最小颜色光源，根据第一色饱和度信号、第二色饱和度信号获取最小颜色光源对应的光源调整系数；
    光源调整器，使用光源调整系数对最小颜色光源进行调整得到第四亮度值；以及
    光源驱动器，使用第四亮度值对最小颜色光源进行驱动；
    所述显示模组包括显示面板和背光模组。
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