WO2019184338A1 - 液晶显示装置的驱动方法 - Google Patents

液晶显示装置的驱动方法 Download PDF

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Publication number
WO2019184338A1
WO2019184338A1 PCT/CN2018/113041 CN2018113041W WO2019184338A1 WO 2019184338 A1 WO2019184338 A1 WO 2019184338A1 CN 2018113041 W CN2018113041 W CN 2018113041W WO 2019184338 A1 WO2019184338 A1 WO 2019184338A1
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gray scale
scale data
pixel
color
data group
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PCT/CN2018/113041
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English (en)
French (fr)
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康志聪
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惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Priority to US17/040,438 priority Critical patent/US11205394B2/en
Publication of WO2019184338A1 publication Critical patent/WO2019184338A1/zh

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    • 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
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    • 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
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    • 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
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    • 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
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    • 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
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    • 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

Definitions

  • the present application relates to the field of liquid crystal display technology, and in particular, to a driving method of a liquid crystal display device.
  • the large viewing angle and the positive viewing role are changed.
  • the red, green, and blue colors are more serious than other color systems, and the brightness of the viewing angle of the grayscale liquid crystal display.
  • the rapid saturation increase of the ratio makes the difference between the positive viewing angle brightness and the side viewing angle brightness of the lower gray scale value larger.
  • the current method for improving the color shift is to subdivide each sub-pixel into one main pixel and sub-pixel, and then drive the main pixel with a relatively high driving voltage, and drive the sub-pixel with a relatively low driving voltage, the main pixel and The sub-pixels together display one sub-pixel.
  • the relatively high driving voltage and the relatively low driving voltage can maintain the relationship between the brightness in the front view and the corresponding gray level while driving the main pixel and the sub-pixel.
  • the method is generally in the first half of the gray scale, the main pixel drives the display with a relatively high driving voltage, the sub-pixel does not display, and the brightness of the entire sub-pixel is half of the brightness of the main pixel.
  • the main pixel drives the display with a relatively high driving voltage
  • the sub-pixel drives the display with a relatively low driving voltage.
  • the brightness of the entire sub-pixel is half the sum of the brightness of the main pixel plus the brightness of the sub-pixel. .
  • the above method has the problem that it is necessary to double the metal traces and driving devices to drive the sub-pixels, so that the light-transmissive opening region is sacrificed, affecting the transmittance of the panel, and the cost is also higher.
  • liquid crystal display device is also provided.
  • a driving method of a liquid crystal display device comprising: a display module; the display module comprises a plurality of pixel units arranged in an array; the pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub- a pixel; the display module is divided into at least two mutually independent display regions; and a backlight module is provided with a plurality of backlight units; the backlight unit includes a red light source, a green light source, and a blue light source; the display area corresponds to at least one The backlight unit; the backlight units corresponding to the different display areas are independent of each other, and the driving method includes:
  • a light source having the same color as the sub-pixel having the smallest average grayscale value in the display region in the backlight unit corresponding to each of the display regions is turned off.
  • the driving method of the liquid crystal display device described above wherein the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the gray-scale value corresponding to the original gray-scale data to be displayed in each of the display regions are respectively calculated An average grayscale value of the pixel, and determining, respectively, a size of the average grayscale value corresponding to the red subpixel, the green subpixel, and the blue subpixel in each of the display regions. According to the size relationship of the average grayscale value of the display area, when controlling the grayscale data group after the decomposition, the backlights with most grayscale values corresponding to 0 are turned off.
  • the luminance ratio of the main tone is increased, so that the color shift of the large viewing angle main color to be affected by the low voltage sub-pixel is improved.
  • the main signal brightness presentation in the case of a large viewing angle is increased.
  • the brightness of the overall image display can be maintained.
  • the driving frequency is increased to twice the original driving frequency, the overall image quality can be maintained at the same speed.
  • 1 is a schematic view showing the module structure of a liquid crystal display device
  • FIG. 2 is a flowchart of a driving method for determining a type of display color of a corresponding pixel unit of an original gray scale data group
  • FIG. 3 is a flow chart of a driving method for determining minimum gray level data in a ternary mixed color gray scale data group
  • FIG. 4 is a flow chart of a driving method for determining a minimum non-zero gray scale data in a binary mixed color gray scale data set.
  • the liquid crystal display device 10 includes a display module 100 configured to display graphic information.
  • the display module 100 includes a plurality of pixel units 110 arranged in an array.
  • the pixel unit 110 includes a red sub-pixel 111, a green sub-pixel 112, and a blue sub-pixel 113.
  • the display module 100 is divided into at least two mutually independent display areas 101.
  • the backlight module 300 is provided with a plurality of backlight units 320.
  • the backlight unit 320 includes a red light source 321, a green light source 322, and a blue light source 323.
  • the display area 101 corresponds to at least one backlight unit 320.
  • the backlight units 320 corresponding to the different display areas 101 are independent of each other.
  • the driving methods include:
  • the average gray scale values of the red sub-pixel 111, the green sub-pixel 112, and the blue sub-pixel 113 in the gray-scale values corresponding to the original gray-scale data to be displayed in each display area 101 are respectively calculated, and the red sub-indicia in each display area 101 is determined.
  • the light source of the backlight unit 320 corresponding to each display area 101 having the same color as the sub-pixel having the smallest average gray scale value in the display area 101 is turned off.
  • the driving method further includes: determining a type of a color corresponding to the original gray scale data group to be displayed by each of the pixel units 110.
  • the first gray scale data set is a ternary mixed color gray scale data set, a binary mixed color gray scale data set or a unit color gray scale data set.
  • the second gray scale data set is a binary mixed color gray scale data group or a unit color gray scale data set.
  • the type of the color corresponding to the original gray scale data is determined according to the number of 0 gray scale data in the original gray scale data group to be displayed by each pixel unit 110.
  • the gray scale data is not included in the original gray scale data group, it is determined that the color corresponding to the original gray scale data group is a ternary mixed color.
  • a gray scale data group is included in the original gray scale data group, it is determined that the color corresponding to the original gray scale data group is a binary color mixture.
  • two gray scale data are included in the original gray scale data group, it is determined that the color corresponding to the original gray scale data group is a unit color.
  • an embodiment method step of determining the type of the color corresponding to the original gray scale data group to be displayed by each pixel unit 110 includes S110-S170.
  • step S110 Determine whether the original gray scale data group to be displayed in each pixel unit 110 contains 0 gray scale data, and if yes, execute step S140; otherwise, execute step S120.
  • a certain color is a ternary color mixing type, indicating that the color includes red, green, and blue components.
  • the gray scale values of the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the corresponding pixel unit 110 are not zero. That is, the corresponding original gray scale data group does not contain 0 gray scale data. Therefore, whether the original gray scale data group is a ternary mixed gray scale data group can be determined by determining whether the original gray scale data group contains 0 gray scale data.
  • step S120 Determine whether the original gray scale data group to be displayed by each pixel unit 110 contains only one gray scale data, and if yes, execute step S150; otherwise, execute step S130.
  • a certain color is a binary color mixing type, indicating that the color contains any two colors of red, green, and blue. In the field of liquid crystal display, only one of the gray scale values of the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the corresponding pixel unit 110 is 0, and the other two are not 0. That is, the corresponding original gray scale data group contains only one gray scale data. Therefore, whether the original gray-scale data group is a binary mixed-color gray-scale data group can be determined by determining whether the original gray-scale data group contains only one gray-scale data.
  • step S130 Determine whether the original gray scale data group to be displayed in each pixel unit 110 contains only two 0 gray scale data, and if yes, execute step S160; otherwise, execute step S170.
  • a certain color is a unit color type, indicating that the color contains only one of the three components of red, green, and blue.
  • the gray scale values of the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the corresponding pixel unit 110 are only two, and the other one is not zero. That is, the corresponding original gray scale data group contains only two 0 gray scale data. Therefore, whether the original gray scale data group is a unit color gray scale data group can be determined by determining whether the original gray scale data group contains only two 0 gray scale data.
  • S140 Determine that the color displayed by the pixel unit 110 corresponding to the gray scale data group is a ternary color mixture.
  • S160 Determine that the color displayed by the pixel unit 110 corresponding to the gray scale data group is a unit color.
  • S170 Determine that the pixel unit 110 corresponding to the gray scale data group is in a closed state.
  • the gray scale values corresponding to the respective sub-pixels of a certain pixel unit 110 are all 0, it indicates that the pixel unit 110 does not undertake the display task.
  • the voltage of each sub-pixel of the pixel unit 110 is 0, and is in a closed state. Since the light cannot pass through the liquid crystal, the pixel unit 110 appears black.
  • the grouping rules specifically include:
  • the minimum gray scale data in the original gray scale data group corresponding to the ternary color mixed pixel unit 110 is used as the common gray scale data of the red subpixel 111, the green subpixel 112, and the blue subpixel 113 in the pixel unit 110.
  • the first grayscale data set is used as the common gray scale data of the red subpixel 111, the green subpixel 112, and the blue subpixel 113 in the pixel unit 110.
  • the difference gray data group of the first gray scale data group is subtracted from the original gray scale data group corresponding to the ternary mixed pixel unit 110 as the second gray scale data group.
  • the gray scale data in the original gray scale data group corresponding to the pixel unit 110 of the binary color mixture is used as the common gray scale data of the red subpixel 111, the green subpixel 112, and the blue subpixel 113 in the pixel unit 110.
  • a grayscale data set is used.
  • the original gray scale data group corresponding to the binary mixed color pixel unit 110 is used as the second gray scale data group.
  • the minimum non-zero gray scale data in the original gray scale data group corresponding to the binary mixed color pixel unit 110 is used as the common gray scale data of the subpixel corresponding to the two non-zero gray scale data in the pixel unit 110, and 0.
  • the grayscale data together form a first grayscale data set.
  • the difference data group of the first gray scale data group is subtracted from the original gray scale data set as the second gray scale data group of the pixel unit 110.
  • any one of the gray scale data in the original gray scale data group corresponding to the pixel unit 110 of the unit color is used as the common gray scale data of the red subpixel 111, the green subpixel 112, and the blue subpixel 113 in the pixel unit 110.
  • the original gray scale data set is taken as the second gray scale data set.
  • grayscale data corresponding to half of the grayscale value corresponding to the non-zero grayscale data in the original grayscale data group corresponding to the pixel unit 110 of the unit color is used as the child corresponding to the non-zero grayscale data in the pixel unit 110.
  • the method shown in FIG. 3 is a method for determining the minimum gray scale data in the gray scale data group of the ternary mixed color, and specifically includes steps S210-S260.
  • step S210 Determine whether the red grayscale value in the original grayscale value group corresponding to the original grayscale data group to be displayed by the pixel unit 110 of the ternary mixed color is greater than the green grayscale value, and if yes, execute step S220; otherwise, perform step S230. .
  • This step first determines the magnitude relationship between the grayscale value corresponding to the red sub-pixel 111 and the grayscale value of the green sub-pixel 112, and is merely a case listed for convenience of explanation. It can actually be judged first by using the grayscale values of any two of the red, green and blue sub-pixels.
  • step S220 Determine whether the green grayscale value in the original grayscale value group is greater than the blue grayscale value. If yes, execute step S250; otherwise, perform step S240. In this step, the smaller grayscale value in step S120 is further compared with the grayscale value of the other color, and the corresponding judgment result and the action signal are output.
  • step S230 Determine whether the red grayscale value in the original grayscale value group is greater than the blue grayscale value, and if yes, execute step S250; otherwise, perform step S260.
  • step S120 the smaller grayscale value in step S120 is further compared with the grayscale value of the other color, and the corresponding judgment result and the action signal are output.
  • An embodiment shown in FIG. 4 is a method for determining a minimum non-zero gray scale data in a gray-scale data group of a binary color mixture, and specifically includes steps S310-S380.
  • a certain color is a binary color mixing type, indicating that the color contains any two colors of red, green, and blue.
  • the corresponding original gray scale data group contains only one gray scale data.
  • This step first determines whether the grayscale value corresponding to the red sub-pixel 111 is 0, which is merely a case listed for convenience of explanation. It can actually be judged first by the grayscale value of one of the red, green and blue sub-pixels.
  • step S320 Determine whether the green grayscale value corresponding to the pixel unit 110 of the red sub-pixel grayscale value is greater than the blue grayscale value. If yes, execute step S360; otherwise, perform step S370. In this step, when it is determined that the gray scale value corresponding to the red sub-pixel 111 is 0, it is determined that the color displayed by the pixel unit 110 is a mixed color of green and blue. Therefore, determining the size relationship between the green grayscale value and the blue grayscale value can determine the minimum non-zero grayscale data in the original grayscale dataset corresponding to the pixel unit 110.
  • step S330 Determine whether the green grayscale value corresponding to the pixel unit 110 whose red sub-pixel grayscale value is not 0 is 0. If yes, execute step S350; otherwise, execute step S340. In this step, when it is determined that the grayscale value corresponding to the red sub-pixel 111 is not 0, it is determined whether the grayscale value corresponding to the green sub-pixel 112 is 0. It is merely a case listed for convenience of explanation, and it is actually possible to judge by using the gray scale value of the blue sub-pixel.
  • step S350 Determine whether the red grayscale value corresponding to the pixel unit 110 of the green sub-pixel grayscale value is greater than the blue grayscale value. If yes, execute step S360; otherwise, perform step S380. In this step, when it is determined that the gray scale value corresponding to the green sub-pixel 112 is 0, it is determined that the color displayed by the pixel unit 110 is a mixed color of red and blue. Therefore, determining the magnitude relationship between the red grayscale value and the blue grayscale value can determine the minimum non-zero grayscale data in the original grayscale dataset corresponding to the pixel unit 110.
  • the difference in the brightness of the viewing angle of the gray-scale liquid crystal display is increased, so that the difference between the brightness of the positive viewing angle and the brightness of the side viewing angle of the lower grayscale value is larger. Therefore, in order to highlight the main color and improve the color shift, the lowest gray level data in the original gray scale data set is displayed in a separate set of gray scale data. In other groups, colors that do not contain the lowest grayscale data can be displayed. Thereby, the minimum gray scale color in the group is eliminated, and the display of the main color is affected by the rapid saturation enhancement of the viewing angle brightness ratio of the gray scale liquid crystal display. In order to explain the grouping rules more clearly and directly, the following grouping description is performed in the grayscale value group. It should be noted that the grouping process is a data grouping performed when processing the original grayscale data group.
  • grayscale value groups to illustrate just for convenience and simplicity:
  • the original gray scale data group corresponding to a certain pixel unit 110 is converted into the original gray scale value group (A, B, C). That is, the gray scale value corresponding to the red sub-pixel 111 is A.
  • the gray scale value corresponding to the green sub-pixel 112 is B.
  • the gray sub-pixel 113 corresponds to a grayscale value of C.
  • A>B>C it can be determined that the grayscale value corresponding to the blue sub-pixel 113 is the minimum grayscale value in the original grayscale value, that is, the lowest grayscale value.
  • the difference between the positive viewing angle brightness and the side viewing angle brightness of the lowest gray level value is the largest.
  • the lowest grayscale value is used as the grayscale value common to the red subpixel 111, the green subpixel 112, and the blue subpixel 113 to form a first grayscale value group, that is, (C) , C, C).
  • a first grayscale value group that is, (C) , C, C).
  • the low grayscale value can be removed in the second grayscale value group, eliminating the effect of the color shift on the large viewing angle when the second grayscale value group is displayed.
  • the ratio of the sum of the gray scale values of the main colors after decomposition to the relatively low gray scale values is improved, so that not only the color shift under the side viewing angle is improved, but also the brightness of the main color is improved.
  • the grayscale value data group and the grayscale value group are respectively the minimum unit of the pixel unit 110, and the grayscale data corresponding to the red subpixel 111, the green subpixel 112, and the blue subpixel 113 respectively.
  • a data set consisting of grayscale values refers to the original gray scale value data set input by the display device including the red, green and blue gray scale data.
  • the original grayscale value group refers to a grayscale value group including red, green, and blue grayscale data directly converted from the original grayscale array.
  • the original gray-scale data group corresponding to the binary color mixing and the unit color is decomposed into three sets of gray-scale data groups, so as to keep the synchronization with the execution control mode of the ternary mixed color gray-scale data group, which is convenient for driving and control.
  • the liquid crystal display device 10 further includes a driving module 200.
  • the drive module 200 is configured to receive, process, and output drive data.
  • the driving method further includes increasing the driving frequency of each of the pixel units 110 by an original one to three times to compensate for the display speed lowered by the grayscale value decomposition. Decompose the original grayscale value into two grayscale values and display them in two consecutive time periods, so that the display time of the picture becomes twice the original, that is, the display speed is reduced to one-half of the original, in order to compensate The display speed is lowered due to the resolution of the gray scale value, and the driving frequency can be increased.
  • the driving frequency of each pixel unit 110 is increased by a factor of two to maintain the display speed of the pixel unit 110 after the grayscale value decomposition is the same as the display speed before the grayscale value is decomposed.
  • the setting is such that the smoothness of the screen after the grayscale value is decomposed and displayed is substantially the same as the smoothness of the screen of the original grayscale data display, and the color shift problem of the liquid crystal display is improved without impairing the original visual effect.
  • the backlight module 300 includes a backlight unit 320 configured to provide red, green, and blue backlight sources
  • the driving method further includes boosting the brightness of the color light in the backlight unit 320 that is controlled to be in a light state to an original state. 1 to 3 times to compensate for the decrease in display brightness due to the resolution of the gray scale value, or the increase of the driving frequency, or the combination of the gray scale value decomposition and the increase of the driving frequency. Because the process of grayscale value decomposition is to decompose the original high grayscale value into two new low grayscale values, that is, a set of high voltage signals is actually decomposed into two sets of low voltage signals, so the brightness will decrease. .
  • the display time of the picture is doubled, that is, the display speed is reduced to the original two points. one.
  • the driving frequency is generally increased, and the driving frequency is increased because the time actually displayed by each set of gray scale data sets is smaller than that of the original driving frequency. For example, if the original driving frequency is increased to twice the original driving frequency, the actual display time of the driving signal becomes 1/2 of the original driving signal time, causing the brightness to decrease.
  • the brightness of the backlight can be improved.
  • the brightness of the color lamp controlled to be in the lighting state in the backlight unit 320 is increased by 2 times to maintain the brightness and gray scale value of the pixel unit 110 after the gray level value is decomposed.
  • the brightness is the same.
  • the setting is such that the effect of the gray scale value decomposition display is substantially the same as that of the original gray scale data display, and the color shift problem of the liquid crystal display is improved without impairing the original visual effect.
  • pixel unit 110 includes a plurality of sub-pixels of different colors. For example, a yellow sub-pixel or the like can be included.
  • At least one backlight unit 320 corresponding to each display region 101 is provided on the backlight panel by dividing the display module into a plurality of mutually independent display regions 101. Deleting the original gray scale data group into the first gray scale data group and the second gray scale data group according to the set grouping rule according to the color type corresponding to the original gray scale data group to be displayed by each pixel unit 110, and respectively in two Displayed in consecutive time periods. The average gray scale values of the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the gray scale value corresponding to the original gray scale data to be displayed in each display area are respectively calculated, and the red sub-pixels and the green in each display area are respectively determined.
  • the size of the average grayscale value corresponding to the subpixel and the blue subpixel According to the size relationship of the average grayscale value of the display area, when controlling the grayscale data group after the decomposition, the backlight of the corresponding color with the grayscale value of 0 is turned off.
  • the luminance ratio of the main tone is increased, so that the color shift of the large viewing angle main color to be affected by the low voltage sub-pixel is improved.
  • the main signal brightness presentation in the case of a large viewing angle is increased.
  • the brightness of the overall image display can be maintained.
  • the driving frequency can be maintained at the same speed.
  • the present application can not only achieve energy saving while achieving improved color shift, but also eliminates the need for additional wiring on the liquid crystal display panel.
  • the present application also provides a driving method for a specific display area of a liquid crystal display device, and the liquid crystal display device 10 includes a display module 100.
  • the display module includes a plurality of pixel units 110 arranged in an array.
  • the pixel unit 110 includes a red sub-pixel 111, a green sub-pixel 112, and a blue sub-pixel 113.
  • the display module 100 is divided into at least two mutually independent display areas.
  • the backlight module 300 is provided with a plurality of backlight units 320.
  • the backlight unit includes a red light source, a green light source, and a blue light source.
  • the display area corresponds to at least one backlight unit 320.
  • the driving methods include:
  • the size of the average grayscale value corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the Nth display area is determined.
  • the method or the step of determining the size of the average grayscale value corresponding to the red subpixel, the green subpixel, and the blue subpixel of the Nth display region is referred to the above steps S210-S260.
  • the light source of the backlight unit 320 corresponding to the Nth display area having the same color as the sub-pixel having the smallest average grayscale value in the display area is turned off during the period in which the second gray scale data group is displayed.
  • n and N are integers greater than or equal to 1.
  • the method further includes: determining the type of the color corresponding to the original grayscale data set to be displayed by the nth pixel unit 110.
  • the judgment method or step is the same as the above steps S110-S170.
  • the original gray scale data group is divided into the first gray scale data group and the second gray scale data group according to the set grouping rule according to the type of the corresponding gray color data group to be displayed by the nth pixel unit 110.
  • Its grouping rules are the same as the above-mentioned "grouping rules”.
  • the first gray scale data set and the second gray scale data set are respectively output and displayed in two consecutive time periods.
  • the first gray scale data set is a ternary mixed color gray scale data set, a binary mixed color gray scale data set or a unit color gray scale data set.
  • the second gray scale data set is a binary mixed color gray scale data group or a unit color gray scale data set.
  • the above liquid crystal display device 10 can have the following features:
  • the display module 100 is configured to display graphic information.
  • the display module includes a plurality of pixel units 110 arranged in an array.
  • the pixel unit 110 includes a red sub-pixel 111, a green sub-pixel 112, and a blue sub-pixel 113.
  • the display module 100 is divided into at least two mutually independent display areas 101.
  • the driving module 200 is configured to receive, process, and output the driving data to control the display module to work normally.
  • the drive module 200 includes a grayscale data decomposition processing unit 210.
  • the gray scale value decomposition processing unit 210 is configured to decompose the original gray scale data group to be displayed into the first gray scale data group and the second gray scale data group, and output the first gray scale data in two consecutive time segments respectively.
  • the backlight module 300 is provided with a plurality of backlight units 320.
  • the backlight unit includes a red light source, a green light source, and a blue light source.
  • the display area 101 corresponds to at least one backlight unit 320.
  • the backlight units 320 corresponding to the different display areas 101 are independent of each other.
  • the liquid crystal display device can use the above-described driving method for a partial region or for a partial region in accordance with the properties of the display data.
  • the liquid crystal display region using the above-described driving method can be made to increase the luminance ratio of the main color tone, so that the color shift of the large viewing angle main color to be affected by the low voltage sub-pixel is improved.
  • the liquid crystal display area using the above driving method can be used to increase the brightness of the main signal in the case of a large viewing angle, and the brightness of the entire image quality can be maintained by the brightness of the backlight being increased to twice the original brightness, and the driving is improved by the driving.
  • the frequency is twice the original driving frequency, which can maintain the speed of the overall image quality display.
  • this application does not require additional wiring on the liquid crystal display panel.
  • the liquid crystal display device includes a display module 100 and a backlight module 300 .
  • the display module 100 includes a plurality of pixel units 110 arranged in an array, and the pixel unit 110 includes a red sub-pixel 111, a green sub-pixel 112, and a blue sub-pixel 113.
  • the pixel unit 110 generates a color for each gray scale value group received.
  • the gray scale value group is generated by gray scale data of the input display device.
  • the grayscale value group includes a red grayscale value, a green grayscale value, and a blue grayscale value.
  • the color generated by the pixel unit 110 each time is any one of three types of unit color, binary color mixing, and ternary color mixing.
  • the backlight module 300 includes a power processing unit 310 and a backlight unit 320.
  • the driving module 200 includes a grayscale data decomposition processing unit 210, a driving frequency adjustment unit 220, and a backlight adjustment unit 230.
  • the display module 100 is configured to display graphic information.
  • the driving module 200 is configured to receive, process, and output the driving data to control the display module 100 to operate normally.
  • the backlight module 300 is used for processing of current and lighting the backlight unit 320.
  • the backlight unit 320 includes a red light source 321, a green light source 322, and a blue light source 323.
  • the display module 100 is divided into at least two mutually independent display areas 101.
  • the display area 101 corresponds to at least one backlight unit 320, and the backlight units 320 corresponding to the different display areas 101 are independent of each other.
  • the grayscale value decomposition processing unit 210 is configured to decompose the input original grayscale data corresponding to each pixel unit 110 into three sets of new grayscale data, and output the red subpixel 111, the green subpixel 112, and the blue in each pixel unit 110.
  • the drive frequency adjustment unit 220 is for adjusting the drive frequency.
  • the backlight adjustment unit 230 is for adjusting the color and brightness of the backlight unit 320.
  • the driving methods include:
  • the average gray scale value of the red sub-pixel 111 in the Nth display area 101, the average gray scale value of the green sub-pixel 112, and the average gray scale value of the blue sub-pixel 113 are determined.
  • the light source having the same color as the sub-pixel having the smallest average grayscale value in the Nth display region 101 in the backlight unit 320 corresponding to the Nth display region 101 is turned off during the period in which the second grayscale data group is displayed.
  • the light source of the backlight unit 320 corresponding to the Nth display area 101 and the sub-pixel color of the maximum average gray scale value in the Nth display area 101 are turned off in the period in which the third gray scale data group is displayed.
  • N is an integer greater than or equal to 1.
  • the method further includes: determining, according to the number of 0 gray scale data in the original gray scale data group to be displayed by the nth pixel unit 110, the type of the corresponding gray color data.
  • the gray scale data is not included in the original gray scale data group, it is determined that the color corresponding to the original gray scale data group is a ternary mixed color.
  • n is an integer greater than or equal to 1.
  • the method further includes: dividing the original grayscale data group into the first grayscale data group according to the set grouping rule according to the type of the corresponding gray color of the original grayscale data group to be displayed by the nth pixel unit 110, The second gray scale data group and the third gray scale data group.
  • the first gray scale data set, the second gray scale data set, and the third gray scale data set are respectively output and displayed in three consecutive time periods.
  • n is an integer greater than or equal to 1.
  • the first gray scale data set is a ternary mixed color gray scale data set, a binary mixed color gray scale data set, or a unit color gray scale data set.
  • the second gray scale data set is a binary mixed color gray scale data group or a unit color gray scale data set.
  • the third gray scale data group is a unit color gray scale data group.
  • the display module 100 is divided into a plurality of mutually independent display regions 101, and at least one backlight unit 320 corresponding to each display region 101 is provided on the backlight panel.
  • the gray scale data set has three gray scale data sets and is displayed in three consecutive time periods.
  • the average gray scale value of the red sub-pixel 111, the average gray scale value of the green sub-pixel 112, and the average of the blue sub-pixel 113 in the gray scale value corresponding to the original gray scale data to be displayed in the Nth display region 101 are respectively calculated.
  • the gray scale values are used to determine the average gray scale value of the red sub-pixel 111 in the Nth display area 101, the average gray scale value of the green sub-pixel 112, and the average gray scale value of the blue sub-pixel 113, respectively.
  • the size relationship of the average grayscale value of the display area when the grayscale data group after the decomposition is controlled to be displayed, most of the backlight units 320 of the corresponding color having the grayscale value of 0 are turned off.
  • the luminance ratio of the main color tone of the specific display area is increased, so that the color shift of the large viewing angle main color to be affected by the low voltage sub-pixel is improved.
  • the main signal brightness presentation in the case of a large viewing angle of a particular display area is increased.
  • the specific display area can be maintained at twice the original brightness by the brightness of the backlight, and the brightness of the overall image display can be maintained, and the specific display area can maintain the overall image quality by increasing the driving frequency by twice the original driving frequency. constant.
  • energy savings can be achieved while achieving improved color shift in a particular display area. And there is no need to perform extra wiring on the liquid crystal display panel or the like.
  • the present application also provides a driving method of a liquid crystal display device 10 including a display module 100 and a backlight module 300.
  • the display module 100 includes a plurality of pixel units 110 arranged in an array, and the pixel unit 110 includes a red sub-pixel 111, a green sub-pixel 112, and a blue sub-pixel 113.
  • the color generated by the pixel unit 110 each time is any one of three types of unit color, binary color mixing, and ternary color mixing.
  • the backlight module 300 is provided with a plurality of backlight units 320.
  • the backlight unit 320 includes a red light source 321, a green light source 322, and a blue light source 323.
  • the display module 100 is divided into at least two mutually independent display areas 101.
  • the display area 101 corresponds to at least one backlight unit 320, and the backlight units 320 corresponding to the different display areas 101 are independent of each other.
  • the driving methods include:
  • the average gray scale value of the red sub-pixel 111, the average gray scale value of the green sub-pixel 112, and the average gray scale value of the blue sub-pixel 113 in the gray scale value corresponding to the original gray scale data to be displayed in each display area 101 are calculated.
  • the average gray scale value of the red sub-pixel 111 in each display area 101, the average gray scale value of the green sub-pixel 112, and the average gray scale value of the blue sub-pixel 113 are determined.
  • each display area 101 in the display module 100 is fixed and relatively independent.
  • the pattern displayed by each display area 101 is different according to the overall needs, and some display areas 101 display only one color, and some display two or more colors. Or, on the basis of the above, some display areas 101 only display unit colors, or only display binary color mixing, or only display ternary color mixing, and some display areas 101 may include display unit color, binary color mixing or ternary color mixing. Any two combinations or a combination of the three.
  • some display areas 101 although some pixel units 110 of a mixed color type are relatively small in a certain display stage, when they are concentrated in a certain range of pixel blocks, the display area 101 is corresponding according to a general control method.
  • the color lamp corresponding to the minimum average grayscale value in the backlight unit 320 is turned off, or the grayscale value of the color corresponding to the minimum average grayscale value in the display region 101 is set to 0, which affects the image quality.
  • the integrity of the picture is set to
  • the display area 101 "When the number of pixel units 110 displaying the unit color in the display area 101 reaches the first set value" means that the unit color pixel unit 110 in a certain display area 101 occupies the vast majority, and at this time, the display area 101 The characteristic is mainly dominated by the unit color, and the light source of the backlight unit 320 corresponding to the display area 101 and the sub-pixel color of the maximum average gray level value in the display area 101 is controlled to be turned off or on according to the control rule of the unit color, and can be changed. The display screen of the display area 101 or the influence on the display area of the display area is negligible.
  • the driving method further includes: determining whether there is a pixel block in the display area where the number of pixel units 110 of the display unit color reaches a second set value, and if so, maintaining the backlight unit 320 corresponding to the display area A light source having a different sub-pixel color of the largest average gray scale value in the Nth display area is turned on. Otherwise, the light source in the backlight unit 320 corresponding to the display area that is different from the sub-pixel color of the maximum average gray scale value in the Nth display area is turned off.
  • determining whether or not there is a pixel block in which the number of pixel units 110 of the display unit color reaches the second set value is an explanation, although a certain unit color occupies the pole of the pixel unit 110 in the total display area. A small part, but the unit color is not scattered throughout the display area, but concentrated in a certain pixel block.
  • the screen displayed on the display area is affected. That is, it is possible that a certain color has the smallest average value of the grayscale values for the entire display area. However, for a certain pixel block in the display area, the grayscale average of the color is not the smallest in the pixel block.
  • the color light corresponding to the minimum average gray level value in the backlight unit 320 corresponding to the display area needs to be maintained during the time period in which the gray level data group is displayed. Open. However, the color light corresponding to the minimum average grayscale value in the backlight unit 320 corresponding to the display area cannot be turned off according to the usual practice. Otherwise it will affect the picture quality or affect the integrity of the picture.
  • a certain display area is further divided into a first pixel block, a second pixel block, and a third pixel block
  • the first pixel block displays a red cell color
  • the second pixel block displays a green cell color
  • the third pixel The block displays a blue cell
  • the area of the first pixel block is larger than the second pixel area
  • the second pixel area is larger than the third pixel block.
  • the average value of the gray sub-pixel 113 gray scale value is the smallest, but at this time, for the third pixel block, the blue sub-pixel 113 is its main color, if it is displayed at this time. If the color light corresponding to the blue sub-pixel 113 having the smallest average value of the grayscale values in the region is turned off, the third pixel block cannot be displayed, which may seriously affect the originally displayed screen.
  • the driving method further includes:
  • the light source of the backlight unit 320 corresponding to the display area having the same color as the sub-pixel having the smallest average gray level value in the display area shut down.
  • the light source of the backlight unit 320 corresponding to the display area having the same color as the sub-pixel having the smallest average gray level value in the display area is turned off.
  • the number of pixel units 110 displaying the binary color mixture in the display area reaches the third set value means that the binary color mixing pixel unit 110 in a certain display area occupies the vast majority, and the characteristics of the display area at this time Mainly controlled by the binary color mixing, according to the control rule of the binary color mixing, the light source of the backlight unit 320 corresponding to the display area and the sub-pixel color having the smallest average gray level value in the display area is turned off or on, and the display area can be changed.
  • the display screen or the effect on the display area of the display area is negligible. Energy saving can be achieved while ensuring that the original picture is less affected.
  • the display module 100 is divided into a plurality of mutually independent display regions, and at least one backlight unit 320 corresponding to each display region is provided on the backlight panel 300.
  • the average gray scale values of the red sub-pixel 111, the green sub-pixel 112, and the blue sub-pixel 113 in the gray-scale values corresponding to the original gray-scale data to be displayed in each display area are respectively calculated, and the red sub-indicia in each display area is respectively determined.
  • the luminance ratio of the main tone is increased, so that the color shift of the large viewing angle main color to be affected by the low voltage sub-pixel is improved. Increased main signal brightness presentation with large viewing angles.
  • the brightness of the overall image display can be maintained, and by increasing the driving frequency to twice the original driving frequency, the overall image quality can be maintained at the same speed.
  • energy saving can be achieved while achieving improved color shift. And there is no need to perform extra wiring on the liquid crystal display panel or the like.

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Abstract

公开了一种显示装置及其驱动方法。计算显示区域中待显示的原灰阶数据对应的像素单元中各像素的子像素灰阶平均值，将各显示区域对应的背光单元中平均灰阶值最小的子像素颜色对应的光源关闭。

Description

液晶显示装置的驱动方法
相关申请
本申请要求2018年03月30日申请的，申请号为201810292399.3，名称为“液晶显示装置及其驱动方法”的中国专利申请的优先权在此将其全文引入作为参考。
技术领域
本申请涉及液晶显示技术领域，特别是涉及一种液晶显示装置的驱动方法。
背景技术
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中，红色、绿色和蓝色的色系大视角色偏情况均较其他色系严重，而且，由于灰阶液晶显示的视角亮度比例的快速饱和提升，使得越低灰阶值的正视角亮度与侧视角亮度差异越大。
目前用于改善色偏的方式是将每一个子像素都再细分为一个主像素和次像素，然后用相对高的驱动电压驱动主像素，用相对低的驱动电压驱动次像素，主像素和次像素一起显示一个子像素。并且所述相对高的驱动电压和相对低的驱动电压在驱动主像素和次像素时，能够维持正视视角下的亮度与对应灰阶的关系不变。该种方法一般在灰阶的前半段，主像素用相对高的驱动电压驱动显示、次像素不显示，整个子像素的亮度就是主像素亮度的一半。在灰阶的后半段，主像素用相对高的驱动电压驱动显示、次像素用相对低的驱动电压驱动显示，整个子像素的亮度就是主像素的亮度加上次像素的亮度的和的一半。这样合成后，虽然大视角下的色偏情况有所改善。
但上述方法存在的问题是，需要增加一倍的金属走线和驱动器件来驱动次像素，使可透光开口区牺牲，影响面板透光率，同时成本也更高。
申请内容
基于此，有必要提供一种可以改善大视角色偏情况，同时成本不会提高的 液晶显示装置的驱动方法。
此外，还提供一种液晶显示装置。
一种液晶显示装置的驱动方法，所述液晶显示装置包括：显示模块；所述显示模块包括多个呈阵列排布的像素单元；所述像素单元包括红色子像素、绿色子像素和蓝色子像素；所述显示模块至少划分为两个相互独立的显示区域；及背光模块，设置有多个背光单元；所述背光单元包括红色光源、绿色光源和蓝色光源；所述显示区域至少对应一个所述背光单元；不同所述显示区域对应的所述背光单元之间相互独立，所述驱动方法包括：
分别计算各个所述显示区域内待显示的原灰阶数据对应的灰阶值中所述红色子像素、所述绿色子像素和所述蓝色子像素的平均灰阶值，并判断各个所述显示区域内所述红色子像素、所述绿色子像素和所述蓝色子像素对应的所述平均灰阶值的大小；
将各个所述显示区域对应的所述背光单元中与该显示区域内所述平均灰阶值最小的子像素颜色相同的光源关闭。
上述所述的液晶显示装置的驱动方法，通过分别计算各个所述显示区域内待显示的原灰阶数据对应的灰阶值中所述红色子像素、所述绿色子像素和所述蓝色子像素的平均灰阶值，并分别判断各个所述显示区域内所述红色子像素、所述绿色子像素和所述蓝色子像素对应的所述平均灰阶值的大小。根据显示区域平均灰阶值的大小关系，控制分解后的灰阶数据组显示时，关闭大多数灰阶值为0对应颜色的背光灯。如此设置，提高了主色调的亮度比例，使得大视角主色调受到低电压子像素影响的色偏情况获得改善。同时，增加了大视角情况下的主信号亮度呈现。以及通过背光亮度提升为原亮度的两倍可以维持整体画质显示的亮度不变，通过提高驱动频率为原驱动频率的两倍，可以维持整体画质显示的速度不变。
附图说明
图1为液晶显示装置的模块构成示意图；
图2为判断原灰阶数据组对应像素单元显示颜色的类型的驱动方法流程图；
图3为判断三元混色灰阶数据组中最小灰阶数据的驱动方法流程图；
图4为判断二元混色灰阶数据组中最小非0灰阶数据的驱动方法流程图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
本申请提供了一种液晶显示装置的驱动方法，如图1所示，液晶显示装置10包括：显示模块100，设置为显示图文信息。显示模块100包括多个呈阵列排布的像素单元110。像素单元110包括红色子像素111、绿色子像素112和蓝色子像素113。显示模块100至少划分为两个相互独立的显示区域101。及背光模块300，设置有多个背光单元320。背光单元320包括红色光源321、绿色光源322和蓝色光源323。显示区域101至少对应一个背光单元320。不同显示区域101对应的背光单元320之间相互独立。驱动方法包括：
分别计算各个显示区域101内待显示的原灰阶数据对应的灰阶值中红色子像素111、绿色子像素112和蓝色子像素113的平均灰阶值，并判断各个显示区域101内红色子像素111、绿色子像素112和蓝色子像素113对应的平均灰阶值的大小。
在显示第二灰阶数据组的时间段内，将各个显示区域101对应的背光单元320中与该显示区域101内平均灰阶值最小的子像素颜色相同的光源关闭。
在其中一个实施例中，驱动方法还包括：判断各个像素单元110待显示的原灰阶数据组对应颜色的类型。
根据各个像素单元110待显示的原灰阶数据组对应颜色的类型将原灰阶数据组按照设定的分组规则分成第一灰阶数据组和第二灰阶数据组，并分别在两个连续的时间段内输出显示。第一灰阶数据组为三元混色灰阶数据组、二元混色灰阶数据组或单元色灰阶数据组。第二灰阶数据组为二元混色灰阶数据组或单元色灰阶数据组。
其中，根据各个像素单元110待显示的原灰阶数据组中0灰阶数据的数量来判定该原灰阶数据对应颜色的类型。当原灰阶数据组中不包括0灰阶数据时，判定该原灰阶数据组对应的颜色为三元混色。当原灰阶数据组中包括一个0灰阶数据时，判定该原灰阶数据组对应的颜色为二元混色。当原灰阶数据组中包括两个0灰阶数据时，判定该原灰阶数据组对应的颜色为单元色。
具体如图2所示，判断各个像素单元110待显示的原灰阶数据组对应颜色的类型的一实施例方法步骤包括S110-S170。
S110：判断各个像素单元110待显示的原灰阶数据组中是否含有0灰阶数据，若是，则执行步骤S140，否则，执行步骤S120。某种颜色为三元混色类型，说明该颜色中包含了红、绿、蓝三种成分的颜色。在液晶显示领域中，对应像素单元110中的红色子像素、绿色子像素和蓝色子像素的灰阶值均不为0。即对应的原灰阶数据组中不含有0灰阶数据。所以，可以通过判断该原灰阶数据组中是否含有0灰阶数据来判断该原灰阶数据组是否为三元混色灰阶数据组。
S120：判断各个像素单元110待显示的原灰阶数据组中是否只含有一个0灰阶数据，若是，则执行步骤S150，否则，执行步骤S130。某种颜色为二元混色类型，说明该颜色中包含了红、绿、蓝三种成分的任意两种颜色。在液晶显示领域中，对应像素单元110中的红色子像素、绿色子像素和蓝色子像素的灰阶值只有一个为0，其他两个不为0。即对应的原灰阶数据组中只含有一个0灰阶数据。所以，可以通过判断该原灰阶数据组中是否只含有一个0灰阶数据来判断该原灰阶数据组是否为二元混色灰阶数据组。
S130：判断各个像素单元110待显示的原灰阶数据组中是否只含有两个0灰阶数据，若是，则执行步骤S160，否则，执行步骤S170。某种颜色为单元色类型，说明该颜色中只包含了红、绿、蓝三种成分的任意一种颜色。在液晶显示领域中，对应像素单元110中的红色子像素、绿色子像素和蓝色子像素的灰阶值只有两个为0，另外一个不为0。即对应的原灰阶数据组中只含有两个0灰阶数据。所以，可以通过判断该原灰阶数据组中是否只含有两个0灰阶数据来判断该原灰阶数据组是否为单元色灰阶数据组。
S140：判定该灰阶数据组对应的像素单元110显示的颜色为三元混色。
S150：判定该灰阶数据组对应的像素单元110显示的颜色为二元混色。
S160：判定该灰阶数据组对应的像素单元110显示的颜色为单元色。
S170：判定该灰阶数据组对应的像素单元110为关闭状态。当某个像素单元110各个子像素对应的灰阶值全部为0时，说明该像素单元110不承担显示任务。此时该像素单元110的各个子像素电压为0，处于关闭状态。因为光线不能够透过液晶，该像素单元110呈现黑色。
分组规则具体包括：
将三元混色的像素单元110对应的原灰阶数据组中的最小原灰阶数据作为该像素单元110中红色子像素111、绿色子像素112和蓝色子像素113的共同灰阶数据，组成第一灰阶数据组。
将三元混色的像素单元110对应的原灰阶数据组减去第一灰阶数据组的差值数据组作为第二灰阶数据组。
将二元混色的像素单元110对应的原灰阶数据组中的0灰阶数据作为该像素单元110中红色子像素111、绿色子像素112和蓝色子像素113的共同灰阶数据，组成第一灰阶数据组。
而将二元混色的像素单元110对应的原灰阶数据组作为第二灰阶数据组。
或者，将二元混色的像素单元110对应的原灰阶数据组中的最小非0灰阶数据作为该像素单元110中两个非0灰阶数据对应的子像素的共同灰阶数据，与0灰阶数据一起组成第一灰阶数据组。而将原灰阶数据组减去第一灰阶数据组的差值数据组作为该像素单元110的第二灰阶数据组。
将单元色的像素单元110对应的原灰阶数据组中的任何一个0灰阶数据作为该像素单元110中红色子像素111、绿色子像素112和蓝色子像素113的共同灰阶数据组成第一灰阶数据组。而将原灰阶数据组作为第二灰阶数据组。
或者，将单元色的像素单元110对应的原灰阶数据组中的非0灰阶数据对应的灰阶值的一半对应的灰阶数据，作为该像素单元110中非0灰阶数据对应的子像素的灰阶数据，与0灰阶数据一起分别组成第一灰阶数据组和第二灰阶数据组。
其中，如图3所示的一实施例为判断三元混色的灰阶数据组中最小灰阶数据的方法，具体包括步骤S210-S260。
S210：判断三元混色的像素单元110待显示的原灰阶数据组对应的原灰阶值组中的红色灰阶值是否大于绿色灰阶值，若是，则执行步骤S220，否则，执行步骤S230。该步骤首先判断红色子像素111对应的灰阶值与绿色子像素112的灰阶值的大小关系，仅仅是为了便于说明而列举的一种情况。其实际上可以采用红色、绿色和蓝色子像素中任意两个颜色的灰阶值进行先判断。
S220：判断原灰阶值组中的绿色灰阶值是否大于蓝色灰阶值，若是，则执行步骤S250，否则，执行步骤S240。该步骤是将步骤S120中较小的灰阶值再与另外一个颜色的灰阶值进行比较和判断，并输出相应的判断结果和动作信号。
S230：判断原灰阶值组中的红色灰阶值是否大于蓝色灰阶值，若是，则执行步骤S250，否则，执行步骤S260。该步骤是将步骤S120中较小的灰阶值再与另外一个颜色的灰阶值进行比较和判断，并输出相应的判断结果和动作信号。
S240：判定原灰阶数据组中绿色子像素对应的灰阶数据为最小原灰阶数据。
S250：判定原灰阶数据组中蓝色子像素对应的灰阶数据为最小原灰阶数据。
S260：判定原灰阶数据组中红色子像素对应的灰阶数据为最小原灰阶数据。
如图4所示的一实施例为判断二元混色的灰阶数据组中最小非0灰阶数据的方法，具体包括步骤S310-S380。
S310：判断二元混色的像素单元110待显示的原灰阶数据组对应的原灰阶值组中的红色灰阶值是否为0，若是，则执行步骤S320，否则，执行步骤S330。
某种颜色为二元混色类型，说明该颜色中包含了红、绿、蓝三种成分的任意两种颜色。在液晶显示领域中，对应像素单元110中的红色子像素、绿色子像素和蓝色子像素的灰阶值只有一个为0，其他两个不为0。即对应的原灰阶数据组中只含有一个0灰阶数据。该步骤首先判断红色子像素111对应的灰阶值是否为0，仅仅是为了便于说明而列举的一种情况。其实际上可以采用红色、绿色和蓝色子像素中一个颜色的灰阶值进行先判断。
S320：判断该红色子像素灰阶值为0的像素单元110对应的绿色灰阶值是否大于蓝色灰阶值，若是，则执行步骤S360，否则，执行步骤S370。该步骤是在判定红色子像素111对应的灰阶值为0时，即确定了该像素单元110显示的颜色为绿色和蓝色的混合色。所以判断绿色灰阶值和蓝色灰阶值的大小关系就能够确定该像素单元110对应的原灰阶数据组中的最小非0灰阶数据了。
S330：判断该红色子像素灰阶值非0的像素单元110对应的绿色灰阶值是否为0，若是，则执行步骤S350，否则，执行步骤S340。该步骤在判定红色子像素111对应的灰阶值不为0时，再判断绿色子像素112对应的灰阶值是否为0。仅仅是为了便于说明而列举的一种情况，其实际上也可以采用蓝色子像素的灰阶值进行判断。
S340：判断该蓝色子像素灰阶值为0的像素单元110对应的红色灰阶值是否大于绿色灰阶值，若是，则执行步骤S380，否则，执行步骤S370。该步骤是在判定蓝色子像素113对应的灰阶值为0时，即确定了该像素单元110显示的颜色为绿色和红色的混合色。所以判断绿色灰阶值和红色灰阶值的大小关系 就能够确定该像素单元110对应的原灰阶数据组中的最小非0灰阶数据了。
S350：判断该绿色子像素灰阶值为0的像素单元110对应的红色灰阶值是否大于蓝色灰阶值，若是，则执行步骤S360，否则，执行步骤S380。该步骤是在判定绿色子像素112对应的灰阶值为0时，即确定了该像素单元110显示的颜色为红色和蓝色的混合色。所以判断红色灰阶值和蓝色灰阶值的大小关系就能够确定该像素单元110对应的原灰阶数据组中的最小非0灰阶数据了。
S360：判定该二元混色的像素单元110对应的原灰阶数据组中蓝色子像素对应的原灰阶数据为最小非0灰阶数据。
S370：判定该二元混色的像素单元110对应的原灰阶数据组中绿色子像素对应的原灰阶数据为最小非0灰阶数据。
S380：判定该二元混色的像素单元110对应的原灰阶数据组中红色子像素对应的原灰阶数据为最小非0灰阶数据。
分组规则中，由于灰阶液晶显示的视角亮度比例的快速饱和提升，使得越低灰阶值的正视角亮度与侧视角亮度的差异越大。所以，为了突出主色和改善色偏，将原灰阶数据组中的最低灰阶数据放到单独的一组灰阶数据中显示。而在其他分组中则可以显示不含有最低灰阶数据的颜色。从而消除该分组中最低灰阶颜色因灰阶液晶显示的视角亮度比例的快速饱和提升而影响主色的显示。为了更加清楚直接的说明分组规则，以灰阶值组进行如下的分组说明。需要注意的是，分组过程是在处理原灰阶数据组时进行的数据分组。这里用灰阶值组来说明只是为了方便和简捷：
假设某个像素单元110对应的原灰阶数据组转化成原灰阶值组为(A、B、C)。即红色子像素111对应的灰阶值为A。绿色子像素112对应的灰阶值为B。蓝色子像素113对应的灰阶值为C。当A＞B＞C时，即可判定蓝色子像素113对应的灰阶值为原灰阶值中的最小灰阶值，即最低灰阶值。该最低灰阶值的正视角亮度与侧视角亮度的差异最大。为了减轻该最低灰阶值的影响，现将该最低灰阶值作为红色子像素111、绿色子像素112和蓝色子像素113共同的灰阶值，组成第一灰阶值组，即(C、C、C)。而将原灰阶数据中红色子像素111、绿色子像素112和蓝色子像素113对应的灰阶值分别减去该最低灰阶值的差值组作为第二灰阶值组，即(A-C、B-C、0)。
如此设置，就能在第二灰阶值组中中将低灰阶值去除，消除其在第二灰阶值 组显示时对大视角情况下色偏的影响。分解后的主色灰阶值之和相对低灰阶值的比例得到了提升，因此，不仅使侧视角下的色偏有所改善，还使得主色的亮度得到了提升。
在上述的内容中，灰阶值数据组和灰阶值组都是以像素单元110为最小单位，分别由包括红色子像素111、绿色子像素112和蓝色子像素113分别对应的灰阶数据或灰阶值在内的构成的数据组。原灰阶数据组是指包括红、绿、蓝灰阶数据在内的，显示装置输入的原始灰阶值数据组。原灰阶值组是指由原灰阶数组直接转化成的包括红、绿、蓝灰阶数据在内的灰阶值组。
上述的分组规则中将二元混色和单元色对应的原灰阶数据组分解成三组灰阶数据组的目的是为了和三元混色的灰阶数据组的执行控制方式保持同步，便于驱动和控制。
此外，液晶显示装置10还包括驱动模块200。驱动模块200设置为接收、处理并输出驱动数据。驱动方法还包括，将各个像素单元110的驱动频率提升为原来的1至3倍，以补偿因灰阶值分解而降低的显示速度。将原本一个灰阶值分解成两个灰阶值在两个连续的时间段内显示，使得画面的显示时间变成了原来的两倍，即显示速度降低为原来的二分之一，为了补偿因灰阶值分解而降低的显示速度，可将驱动频率提高。
在其中一个实施例中，将各个像素单元110的驱动频率提升为原来的2倍，以维持经过灰阶值分解后的像素单元110的显示速度与灰阶值分解前的显示速度相同。如此设置，是为了使灰阶值分解显示后的画面流畅效果与原灰阶数据显示的画面流畅效果基本相同，在不损害原有的视觉效果下，改善液晶显示的色偏问题。
在其中一个实施中，背光模块300包括设置为提供红色、绿色和蓝色背光光源的背光单元320，驱动方法还包括将背光单元320中被控制为点亮状态的颜色灯的亮度提升为原来的1至3倍，以补偿因灰阶值分解，或驱动频率的提高，或灰阶值分解和驱动频率的提高共同作用下而降低的显示亮度。因为灰阶值分解的过程是将原高灰阶值分解成了两个新的低灰阶值，即实际中由一组高电压信号，被分解成了两组低电压信号，因而亮度会降低。另一方面，由于将原本一个灰阶值分解成两个灰阶值在两个连续的时间段内显示，使得画面的显示时间变成了原来的两倍，即显示速度降低为原来的二分之一。为了补偿因灰阶值 分解而降低的显示速度，一般还会将驱动频率提高，驱动频率提高后还为因为其每组灰阶数据组实际显示的时间较原驱动频率时小而造成亮度降低。例如，将原驱动频率提高为原驱动频率的两倍，则驱动信号实际显示时间变为原驱动信号时间的1/2而造成亮度降低。为了补偿因灰阶值分解，或驱动频率的提高，或灰阶值分解和驱动频率的提高同时作用下而降低的亮度，可将背光亮度提升。
在其中一个实施例中，将背光单元320中被控制为点亮状态的颜色灯的亮度提升为原来的2倍，以维持经过灰阶值分解后的像素单元110亮度与灰阶值分解前的亮度相同。如此设置，是为了使灰阶值分解显示后的效果与原灰阶数据显示的效果基本相同，在不损害原有的视觉效果下，改善液晶显示的色偏问题。
在一些实施例中，像素单元110包括多个颜色相异的子像素。例如可以包括黄色子像素等。
上述的液晶显示装置的驱动方法，通过将显示模块划分成多个相互独立的显示区域101，并在背光板上设置与各个显示区域101对应的至少一个背光单元320。根据各个像素单元110待显示的原灰阶数据组对应的颜色类型，通过设定的分组规则将原灰阶数据组分解成第一灰阶数据组和第二灰阶数据组，并分别在两个连续的时间段内显示。通过分别计算各个显示区域内待显示的原灰阶数据对应的灰阶值中红色子像素、绿色子像素和蓝色子像素的平均灰阶值，并分别判断各个显示区域内红色子像素、绿色子像素和蓝色子像素对应的平均灰阶值的大小。根据显示区域平均灰阶值的大小关系，控制分解后的灰阶数据组显示时，关闭大多数灰阶值为0的对应颜色的背光灯。
如此设置，提高了主色调的亮度比例，使得大视角主色调受到低电压子像素影响的色偏情况获得改善。同时，增加了大视角情况下的主信号亮度呈现。以及通过背光亮度提升为原亮度的两倍可以维持整体画质显示的亮度不变，通过提高驱动频率为原驱动频率的两倍，可以维持整体画质显示的速度不变。此外，本申请不仅能够在实现改善色偏的同时，实现节能，还不需要在液晶显示板上进行额外的布线。
本申请还提供了一种针对液晶显示装置特定显示区域的驱动方法，液晶显示装置10包括：显示模块100。显示模块包括多个呈阵列排布的像素单元110。像素单元110包括红色子像素111、绿色子像素112和蓝色子像素113。显示模块100至少划分为两个相互独立的显示区域。背光模块300，设置有多个背 光单元320。背光单元包括红色光源、绿色光源和蓝色光源。显示区域至少对应一个背光单元320。驱动方法包括：
计算第N个显示区域内待显示的原灰阶数据对应的灰阶值中红色子像素、绿色子像素和蓝色子像素的平均灰阶值。
判断第N个显示区域内红色子像素、绿色子像素和蓝色子像素对应的平均灰阶值的大小。判断第N个显示区域红色子像素、绿色子像素和蓝色子像素对应的平均灰阶值的大小的方法或步骤参考上述步骤S210-S260。
在显示第二灰阶数据组的时间段内，将第N个显示区域对应的背光单元320中与该显示区域内平均灰阶值最小的子像素颜色相同的光源关闭。
n和N为大于或等于1的整数。
在其中一个实施例中，方法还包括：判断第n个像素单元110待显示的原灰阶数据组对应颜色的类型。其判断方法或步骤与上述步骤S110-S170相同。
根据第n个像素单元110待显示的原灰阶数据组对应颜色的类型将原灰阶数据组按照设定的分组规则分成第一灰阶数据组和第二灰阶数据组。其分组规则与上述″分组规则″相同。
将第一灰阶数据组和第二灰阶数据组分别在两个连续的时间段内输出显示。
第一灰阶数据组为三元混色灰阶数据组、二元混色灰阶数据组或单元色灰阶数据组。
第二灰阶数据组为二元混色灰阶数据组或单元色灰阶数据组。
上述的液晶显示装置10可以具有如下特征：
包括：显示模块100，设置为显示图文信息。显示模块包括多个呈阵列排布的像素单元110。像素单元110包括红色子像素111、绿色子像素112和蓝色子像素113。显示模块100至少划分为两个相互独立的显示区域101。驱动模块200，设置为接收、处理并输出驱动数据控制显示模块正常工作。驱动模块200包括灰阶数据分解处理单元210。灰阶值分解处理单元210设置为将待显示的原灰阶数据组分解成第一灰阶数据组和第二灰阶数据组，并分别在两个连续的时间段内输出第一灰阶数据组和第二灰阶数据组对应的灰阶值。及背光模块300，设置有多个背光单元320。背光单元包括红色光源、绿色光源和蓝色光源。显示区域101至少对应一个背光单元320。不同显示区域101对应的背光单元320之间相互独立。
上述液晶显示装置的驱动方法，能够使液晶显示装置针对设定的区域或根据显示数据的性质针对部分区域使用上述驱动方法。如此设置，能够使得使用上述驱动方法的液晶显示区域提高主色调的亮度比例，使得大视角主色调受到低电压子像素影响的色偏情况获得改善。此外，能够使得使用上述驱动方法的液晶显示区域增加大视角情况下的主信号亮度呈现，而且，通过背光亮度提升为原亮度的2倍可以维持整体画质显示的亮度不变，以及通过提高驱动频率为原驱动频率的2倍，可以维持整体画质显示的速度不变。同时，本申请不需要在液晶显示板上进行额外的布线。
本申请还提供了一种液晶显示装置的驱动方法，如图1所示，液晶显示装置包括显示模块100和背光模块300。显示模块100包括多个呈阵列排布的像素单元110，且像素单元110包括红色子像素111、绿色子像素112和蓝色子像素113。像素单元110每接收一个灰阶值组生成一种颜色。灰阶值组由输入显示装置的灰阶数据生成。灰阶值组包括红色灰阶值、绿色灰阶值和蓝色灰阶值。像素单元110每次生成的颜色为单元色、二元混色和三元混色三种类型中的任意一种类型。
背光模块300包括电源处理单元310和背光单元320。驱动模块200包括灰阶数据分解处理单元210、驱动频率调节单元220和背光调节单元230。其中，显示模块100用于显示图文信息。驱动模块200用于接收、处理并输出驱动数据控制显示模块100正常工作。背光模块300用于电流的处理和点亮背光单元320。背光单元320包括红色光源321、绿色光源322和蓝色光源323。显示模块100至少划分为两个相互独立的显示区域101。显示区域101至少对应一个背光单元320，且不同显示区域101对应的背光单元320之间相互独立。
灰阶值分解处理单元210用于将输入的各个像素单元110对应的原灰阶数据分解成三组新的灰阶数据，并输出各个像素单元110中红色子像素111、绿色子像素112和蓝色子像素113在三个连续时间段内的灰阶值。驱动频率调节单元220用于调节驱动频率。背光调节单元230用于调节背光单元320的颜色和亮度。驱动方法包括：
计算第N个显示区域101内待显示的原灰阶数据对应的灰阶值中红色子像素111的平均灰阶值、绿色子像素112的平均灰阶值和蓝色子像素113的平均灰阶值。
判断第N个显示区域101内红色子像素111的平均灰阶值、绿色子像素112的平均灰阶值和蓝色子像素113的平均灰阶值的大小。
在显示第二灰阶数据组的时间段内，将第N个显示区域101对应的背光单元320中与第N个显示区域101内平均灰阶值最小的子像素颜色相同的光源关闭。
在显示第三灰阶数据组的时间段内，将第N个显示区域101对应的背光单元320中与第N个显示区域101内最大平均灰阶值的子像素颜色不相同的光源关闭。
N为大于或等于1的整数。
在其中一个实施例中，方法还包括：根据第n个像素单元110待显示的原灰阶数据组中0灰阶数据的数量判定该原灰阶数据对应颜色的类型。
当原灰阶数据组中不包括0灰阶数据时，判定该原灰阶数据组对应的颜色为三元混色。
当原灰阶数据组中只包括一个0灰阶数据时，判定该原灰阶数据组对应的颜色为二元混色。
当原灰阶数据组中只包括两个0灰阶数据时，判定该原灰阶数据组对应的颜色为单元色。
n为大于或等于1的整数。
在其中一个实施例中，方法还包括：根据第n个像素单元110待显示的原灰阶数据组对应颜色的类型将原灰阶数据组按照设定的分组规则分成第一灰阶数据组、第二灰阶数据组和第三灰阶数据组。
将第一灰阶数据组、第二灰阶数据组和第三灰阶数据组分别在三个连续的时间段内输出显示。
n为大于或等于1的整数。
在其中一个实施例中，第一灰阶数据组为三元混色灰阶数据组、二元混色灰阶数据组或单元色灰阶数据组。
第二灰阶数据组为二元混色灰阶数据组或单元色灰阶数据组。
第三灰阶数据组为单元色灰阶数据组。
上述的液晶显示装置的驱动方法，通过将显示模块100划分成多个相互独立的显示区域101，并在背光板上设置与各个显示区域101对应的至少一个背光 单元320。根据第n个像素单元110待显示的原灰阶数据组对应的颜色类型，通过设定的分组规则将原灰阶数据组分解成第一灰阶数据组、第二灰阶数据组和第三灰阶数据组三个灰阶数据组，并分别在三个连续的时间段内显示。通过分别计算第N个显示区域101内待显示的原灰阶数据对应的灰阶值中红色子像素111的平均灰阶值、绿色子像素112的平均灰阶值和蓝色子像素113的平均灰阶值，并分别判断第N个显示区域101内红色子像素111的平均灰阶值、绿色子像素112的平均灰阶值和蓝色子像素113的平均灰阶值的大小。根据显示区域平均灰阶值的大小关系，控制分解后的灰阶数据组显示时，关闭大多数灰阶值为0的对应颜色的背光单元320。如此设置，提高了特定显示区域主色调的亮度比例，使得大视角主色调受到低电压子像素影响的色偏情况获得改善。增加了特定显示区域大视角情况下的主信号亮度呈现。同时，特定显示区域通过背光亮度提升为原亮度的两倍可以维持整体画质显示的亮度不变，以及特定显示区域通过提高驱动频率为原驱动频率的两倍，可以维持整体画质显示的速度不变。此外，在实现改善特定显示区域色偏的同时，能够实现节能。以及不需要在液晶显示板上进行额外的布线等。
本申请还提供了一种液晶显示装置的驱动方法，液晶显示装置10包括显示模块100和背光模块300。显示模块100包括多个呈阵列排布的像素单元110，且像素单元110包括红色子像素111、绿色子像素112和蓝色子像素113。像素单元110每次生成的颜色为单元色、二元混色和三元混色三种类型中的任意一种类型。背光模块300设置有多个背光单元320。背光单元320包括红色光源321、绿色光源322和蓝色光源323。显示模块100至少划分为两个相互独立的显示区域101。显示区域101至少对应一个背光单元320，且不同显示区域101对应的背光单元320之间相互独立。驱动方法包括：
计算各个显示区域101内待显示的原灰阶数据对应的灰阶值中红色子像素111的平均灰阶值、绿色子像素112的平均灰阶值和蓝色子像素113的平均灰阶值。
判断各个显示区域101内红色子像素111的平均灰阶值、绿色子像素112的平均灰阶值和蓝色子像素113的平均灰阶值的大小。
判断显示区域101内显示单元色的像素单元110数量是否达到第一设定值，若是，则将显示区域101对应的背光单元320中与第N个显示区域101内最 大平均灰阶值的子像素颜色不相同的光源关闭。
当显示模块100中的显示区域101是按照物理方式分割，使每个显示区域101均固定且相对独立。每个显示区域101显示的图案根据总体需要是不同的，有的显示区域101只显示一种颜色，有的则显示两种及两种以上的颜色。或者从基础上讲，有的显示区域101只显示单元色，或只显示二元混色，或只显示三元混色，而有的显示区域101则可以包括显示单元色、二元混色或三元混色中的任意两种组合或三种的组合。有些显示区域101中，虽然某种混色类型的像素单元110在某个显示阶段比较少，但当其比较集中在某一个范围的像素区块时，如果按照一般的控制方法将该显示区域101对应的背光单元320中对应最小平均灰阶值的颜色灯关闭，或者将该显示区域101中最小平均灰阶值对应颜色的灰阶值设置为0，则会影响画质。严重的会影响画面的完整度。
因此，在进行总体的控制规则时，还需要对这种情况作出更加精细化的控制。而当显示区域101内显示单元色的像素单元110数量达到第一设定值，则将显示区域101对应的背光单元320中与该显示区域101内最大平均灰阶值的子像素颜色不相同的光源关闭。其中，“当显示区域101内显示单元色的像素单元110数量是否达到第一设定值”是说明某个显示区域101内的单元色像素单元110占据了绝大多数，此时该显示区域101的特性主要由单元色主导，根据单元色的控制规则控制该显示区域101对应的背光单元320中与该显示区域101内最大平均灰阶值的子像素颜色不相同的光源关闭或开启，能够改变该显示区域101的显示画面或对该显示区域显示画面的影响可以忽略不计。
在其中一个实施例中，驱动方法还包括：判断显示区域内是否存在显示单元色的像素单元110数量达到第二设定值的像素区块，若是，则维持显示区域对应的背光单元320中与第N个显示区域内最大平均灰阶值的子像素颜色不相同的光源开启。否则，将显示区域对应的背光单元320中与第N个显示区域内最大平均灰阶值的子像素颜色不相同的光源关闭。
在该实施例中，″判断显示区域内是否存在显示单元色的像素单元110数量达到第二设定值的像素区块″是说明，虽然某种单元色占总显示区域中像素单元110的极少部分，但该种单元色不是分散在整个显示区域内，而是集中在某个像素区块内。当该种单元色像素单元110的数量达到一定设定值时，就会对该显示区域显示的画面造成影响。即有可能存在某种颜色对于整个显示区域来 说其灰阶值的平均值最小。但对于显示区域内的某个像素区块来说，该种颜色的灰阶平均值不是该像素区块内最小的。而导致该种颜色对该像素区块的影响不能够被忽略时，则在显示该灰阶数据组的时间段内需要维持该显示区域对应的背光单元320中对应最小平均灰阶值的颜色灯开启。而不能按照通常做法将该显示区域对应的背光单元320中对应最小平均灰阶值的颜色灯关闭。否则会影响画质，或影响画面的完整度。
例如，某个显示区域又被分成第一像素区块、第二像素区块、第三像素区块，第一像素区块显示红色单元色，第二像素区块显示绿色单元色，第三像素区块显示蓝色单元，且第一像素区块的面积大于第二像素区，第二像素区大于第三像素区块。则此时对于整个显示区域来说，蓝色子像素113灰阶值的平均值最小，但此时对于第三像素区块来说，蓝色子像素113是其主色，如果此时将显示区域内灰阶值平均值最小的蓝色子像素113对应的颜色灯关闭，则第三像素区块不能显示，可能会对原本显示的画面构成严重影响。
在其中一个实施例中，驱动方法还包括：
判断显示区域内显示二元混色的像素单元110数量是否达到第三设定值，若是，则将显示区域对应的背光单元320中与该显示区域内平均灰阶值最小的子像素颜色相同的光源关闭。当显示区域内显示二元混色的像素单元110数量达到第三设定值，将显示区域对应的背光单元320中与该显示区域内平均灰阶值最小的子像素颜色相同的光源关闭。
其中，“当显示区域内显示二元混色的像素单元110数量达到第三设定值”是说明某个显示区域内的二元混色像素单元110占据了绝大多数，此时该显示区域的特性主要由二元混色主导，根据二元混色的控制规则控制该显示区域对应的背光单元320中与该显示区域内最小平均灰阶值的子像素颜色相同的光源关闭或开启，能够改变该显示区域的显示画面或对该显示区域显示画面的影响可以忽略不计。能够在保证原画面受影响较小的情况下，实现节能。
上述的液晶显示装置的驱动方法，通过将显示模块100划分成多个相互独立的显示区域，并在背光板300上设置与各个显示区域对应的至少一个背光单元320。通过分别计算各个显示区域内待显示的原灰阶数据对应的灰阶值中红色子像素111、绿色子像素112和蓝色子像素113的平均灰阶值，并分别判断各个显示区域内红色子像素111、绿色子像素112和蓝色子像素113对应的平均灰 阶值的大小。
根据显示区域平均灰阶值的大小关系，控制分解后的灰阶数据组显示时，关闭大多数灰阶值为0的对应颜色的背光单元320。如此设置，提高了主色调的亮度比例，使得大视角主色调受到低电压子像素影响的色偏情况获得改善。增加了大视角情况下的主信号亮度呈现。同时，通过背光亮度提升为原亮度的两倍可以维持整体画质显示的亮度不变，以及通过提高驱动频率为原驱动频率的两倍，可以维持整体画质显示的速度不变。此外，在实现改善色偏的同时，能够实现节能。以及不需要在液晶显示板上进行额外的布线等。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种液晶显示装置的驱动方法，所述液晶显示装置包括：显示模块；所述显示模块包括多个呈阵列排布的像素单元；所述像素单元包括红色子像素、绿色子像素和蓝色子像素；所述显示模块至少划分为两个相互独立的显示区域；及背光模块，设置有多个背光单元；所述背光单元包括红色光源、绿色光源和蓝色光源；所述显示区域至少对应一个所述背光单元；不同所述显示区域对应的所述背光单元之间相互独立，其中，所述驱动方法包括：
    分别计算各个所述显示区域内待显示的原灰阶数据对应的灰阶值中所述红色子像素、所述绿色子像素和所述蓝色子像素的平均灰阶值；
    判断各个所述显示区域内所述红色子像素、所述绿色子像素和所述蓝色子像素对应的所述平均灰阶值的大小；
    将各个所述显示区域对应的所述背光单元中与该所述显示区域内所述平均灰阶值最小的子像素颜色相同的光源关闭。
  2. 根据权利要求1所述的液晶显示装置的驱动方法，其中，所述方法还包括：
    根据各个所述像素单元待显示的原灰阶数据组中0灰阶数据的数量判定该所述原灰阶数据对应颜色的类型；
    当所述原灰阶数据组中不包括0灰阶数据时，判定该原灰阶数据组对应的颜色为三元混色。
  3. 根据权利要求2所述的液晶显示装置的驱动方法，其中，所述根据各个所述像素单元待显示的原灰阶数据组中0灰阶数据的数量判定该所述原灰阶数据对应颜色的类型的步骤还包括：
    当所述原灰阶数据组中只包括一个0灰阶数据时，判定该所述原灰阶数据组对应的颜色为二元混色。
  4. 根据权利要求2所述的液晶显示装置的驱动方法，其中，所述根据各个所述像素单元待显示的原灰阶数据组中0灰阶数据的数量判定该所述原灰阶数据对应颜色的类型的步骤还包括：
    当所述原灰阶数据组中只包括两个0灰阶数据时，判定该所述原灰阶数据组对应的颜色为单元色。
  5. 根据权利要求1所述的液晶显示装置的驱动方法，其中，所述方法还包括：
    根据各个所述像素单元待显示的原灰阶数据组对应颜色的类型将所述原灰阶数据组按照设定的分组规则分成第一灰阶数据组和第二灰阶数据组；
    将所述第一灰阶数据组和所述第二灰阶数据组分别在两个连续的时间段内输出显示。
  6. 根据权利要求5所述的液晶显示装置的驱动方法，其中，所述第一灰阶数据组为三元混色灰阶数据组、二元混色灰阶数据组或单元色灰阶数据组。
  7. 根据权利要求5所述的液晶显示装置的驱动方法，其中，所述第二灰阶数据组为二元混色灰阶数据组或单元色灰阶数据组。
  8. 根据权利要求5所述的液晶显示装置的驱动方法，其中，所述驱动方法还包括：
    将各个所述像素单元的驱动频率提升为原来的1至3倍，以补偿因灰阶值分解而降低的显示速度。
  9. 根据权利要求8所述的液晶显示装置的驱动方法，其中，所述驱动方法还包括：
    将所述背光单元中被控制为点亮状态的颜色灯的亮度提升为原来的1至3倍，以补偿因灰阶值分解，或驱动频率的提高，或灰阶值分解和驱动频率的提高共同作用下而降低的显示亮度。
  10. 一种液晶显示装置的驱动方法，所述液晶显示装置包括：显示模块；所述显示模块包括多个呈阵列排布的像素单元；所述像素单元包括红色子像素、绿色子像素和蓝色子像素；所述显示模块至少划分为两个相互独立的显示区域；及背光模块，设置有多个背光单元；所述背光单元包括红色光源、绿色光源和蓝色光源；所述显示区域至少对应一个所述背光单元；不同所述显示区域对应的所述背光单元之间相互独立，其中，所述驱动方法包括：
    计算第N个所述显示区域内待显示的原灰阶数据对应的灰阶值中所述红色子像素、所述绿色子像素和所述蓝色子像素的平均灰阶值；
    判断第N个所述显示区域内所述红色子像素、所述绿色子像素和所述蓝色子像素对应的所述平均灰阶值的大小；
    将第N个所述显示区域对应的所述背光单元中与该所述显示区域内所述平 均灰阶值最小的子像素颜色相同的光源关闭；
    所述N为大于或等于1的整数。
  11. 根据权利要求10所述的液晶显示装置的驱动方法，其中，所述方法还包括：
    判断第n个所述像素单元待显示的原灰阶数据组对应颜色的类型；
    根据第n个所述像素单元待显示的原灰阶数据组对应颜色的类型将原灰阶数据组按照设定的分组规则分成第一灰阶数据组和第二灰阶数据组；
    将所述第一灰阶数据组和所述第二灰阶数据组分别在两个连续的时间段内输出显示；
    所述n为大于或等于1的整数。
  12. 根据权利要求11所述的液晶显示装置的驱动方法，其中，所述第一灰阶数据组为三元混色灰阶数据组、二元混色灰阶数据组或单元色灰阶数据组。
  13. 根据权利要求11所述的液晶显示装置的驱动方法，其中，所述第二灰阶数据组为二元混色灰阶数据组或单元色灰阶数据组。
  14. 根据权利要求10所述的液晶显示装置的驱动方法，其中，所述方法还包括：
    判断第n个所述像素单元待显示的原灰阶数据组对应颜色的类型；
    根据第n个所述像素单元待显示的原灰阶数据组对应颜色的类型将原灰阶数据组按照设定的分组规则分成第一灰阶数据组、第二灰阶数据组和第三灰阶数据组；
    将所述第一灰阶数据组、所述第二灰阶数据组和所述第三灰阶数据组分别在三个连续的时间段内输出显示；
    所述n为大于或等于1的整数。
  15. 根据权利要求14所述的液晶显示装置的驱动方法，其中，所述第一灰阶数据组为三元混色灰阶数据组、二元混色灰阶数据组或单元色灰阶数据组。
  16. 根据权利要求14所述的液晶显示装置的驱动方法，其中，所述第二灰阶数据组为二元混色灰阶数据组或单元色灰阶数据组。
  17. 根据权利要求14所述的液晶显示装置的驱动方法，其中，所述第三灰阶数据组为单元色灰阶数据组。
  18. 一种液晶显示装置的驱动方法，所述液晶显示装置包括：显示模块；所 述显示模块包括多个呈阵列排布的像素单元；所述像素单元包括红色子像素、绿色子像素和蓝色子像素；所述显示模块至少划分为两个相互独立的显示区域；及背光模块，设置有多个背光单元；所述背光单元包括红色光源、绿色光源和蓝色光源；所述显示区域至少对应一个所述背光单元；不同所述显示区域对应的所述背光单元之间相互独立，其中，所述驱动方法包括：
    分别计算各个所述显示区域内待显示的原灰阶数据对应的灰阶值中所述红色子像素、所述绿色子像素和所述蓝色子像素的平均灰阶值；
    判断各个所述显示区域内所述红色子像素、所述绿色子像素和所述蓝色子像素对应的所述平均灰阶值的大小；
    判断各个显示区域内显示单元色的像素单元数量是否达到预设的第一设定值，若是，则将显示区域对应的背光单元中与该所述显示区域内所述平均灰阶值最小的子像素颜色相同的光源关闭。
  19. 根据权利要求18所述的液晶显示装置的驱动方法，其中，所述方法还包括：
    根据各个所述像素单元待显示的原灰阶数据组中0灰阶数据的数量判定该原灰阶数据对应颜色的类型；
    当所述原灰阶数据组中不包括0灰阶数据时，判定该原灰阶数据组对应的颜色为三元混色；
    当所述原灰阶数据组中只包括一个0灰阶数据时，判定该原灰阶数据组对应的颜色为二元混色；
    当所述原灰阶数据组中只包括两个0灰阶数据时，判定该原灰阶数据组对应的颜色为单元色。
  20. 根据权利要求18所述的液晶显示装置的驱动方法，其中，所述方法还包括：
    根据各个所述像素单元待显示的原灰阶数据组对应颜色的类型将原灰阶数据组按照设定的分组规则分成第一灰阶数据组和第二灰阶数据组；
    将所述第一灰阶数据组和所述第二灰阶数据组分别在两个连续的时间段内输出显示。
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