WO2020103250A1 - 像素驱动方法、像素驱动装置和计算机设备 - Google Patents

像素驱动方法、像素驱动装置和计算机设备

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Publication number
WO2020103250A1
WO2020103250A1 PCT/CN2018/121961 CN2018121961W WO2020103250A1 WO 2020103250 A1 WO2020103250 A1 WO 2020103250A1 CN 2018121961 W CN2018121961 W CN 2018121961W WO 2020103250 A1 WO2020103250 A1 WO 2020103250A1
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WIPO (PCT)
Prior art keywords
pixel
signal
type
unit
pixel block
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Ceased
Application number
PCT/CN2018/121961
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English (en)
French (fr)
Inventor
康志聪
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HKC Co Ltd
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HKC Co Ltd
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Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to US17/272,931 priority Critical patent/US11232758B2/en
Publication of WO2020103250A1 publication Critical patent/WO2020103250A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G09G2300/0447—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present application relates to a pixel driving method, pixel driving device, and computer equipment.
  • VA Very Alignment liquid crystal
  • IPS In-Plane Switching
  • the panel needs a larger viewing angle for commercial applications, but as shown in Figure 1, when using VA (Vertical Alignment liquid crystal) type liquid crystal technology for display driving, the brightness of the large viewing angle quickly saturates with the signal (as shown in curve 2) As a result, the quality of the viewing angle contrast and color shift compared to the front view (as shown in curve 1, the brightness changes with the signal under the positive viewing angle) deteriorates seriously.
  • VA Vertical Alignment liquid crystal
  • the pixel driving method provided by the exemplary technology may cause the overall picture to be grainy due to the bright and dark sub-pixels.
  • the purpose of the present application is to provide a pixel driving method, a pixel driving device and a computer device, so as to avoid a grainy feeling when displaying a picture, thereby improving the display quality.
  • an embodiment of the present application provides a pixel driving method, including:
  • the pixel signal of each unit pixel and the signal judgment interval it is judged whether the pixel signal of the pixel block satisfies the first condition, and the first condition is used to indicate that the pixel block is grainy when displayed;
  • a first type of gray scale signal is loaded to a part of the unit pixels of the pixel block according to a preset rule, and a second type of gray scale is loaded to the remaining unit pixels of the pixel block Signal, wherein the first-level grayscale signal is not equal to the corresponding second-level grayscale signal.
  • the pixel driving method provided by the embodiment of the present application determines whether the pixel signal of the corresponding pixel block satisfies the first condition by acquiring the pixel signal of each unit pixel in the pixel block, and according to the pixel signal and signal determination interval of each unit pixel (Whether there is graininess), if it is judged that there is graininess during display, then each unit pixel in the pixel block is loaded with a new first-level grayscale signal and a second-type grayscale signal, and the first-type grayscale is loaded by control
  • the unit pixel ratio of the signal and the second type of gray-scale signal reduces the pixel signal difference, improving the graininess of the pixel block display.
  • the signal determination interval includes a first type interval and a second type interval
  • the step of determining whether the pixel signal of the pixel block satisfies the first condition according to the pixel signal and the signal determination interval of each unit pixel includes:
  • the first grouping unit includes two adjacent unit pixels, and there is no same unit pixel in each first grouping unit;
  • the signal judgment interval corresponding to the maximum first scale parameter satisfying the standard scale requirement is the first type interval, it is judged that the pixel signal of the pixel block meets the first condition
  • the maximum first scale parameter satisfying the standard scale requirement is the second type interval, it is determined that the pixel signal of the pixel block does not satisfy the first condition.
  • the signal determination interval includes a first type interval and a second type interval
  • the step of determining whether the pixel signal of the pixel block satisfies the first condition according to the pixel signal and the signal determination interval of each unit pixel includes:
  • the maximum second scale parameter satisfying the standard scale requirement is the first type interval, it is determined that the pixel signal of the pixel block meets the first condition
  • the maximum second scale parameter satisfying the standard scale requirement is the second type interval, it is determined that the pixel signal of the pixel block does not satisfy the first condition.
  • the steps of acquiring the first-type grayscale signal and the second-type grayscale signal include:
  • the second grouping unit includes four adjacent unit pixels, and there is no difference in each first grouping unit Of unit pixels;
  • the steps of acquiring the first-type grayscale signal and the second-type grayscale signal include:
  • the first grouping unit includes two adjacent unit pixels, and each of the first grouping units No identical unit pixels;
  • the unit pixel includes a red sub-pixel; a first type of grayscale signal is loaded to a part of the unit pixels of the pixel block according to a preset rule, and a second type of grayscale is loaded to the remaining unit pixels of the pixel block
  • the signal steps include:
  • the three red sub-pixels in each second grouping unit are loaded with the first-type gray-scale signal, and the remaining one red sub-pixel is loaded with the second-type gray-scale signal.
  • the unit pixel includes a green sub-pixel, and a part of the unit pixel of the pixel block is loaded with the first type of grayscale signal according to a preset rule, and the remaining unit pixel of the pixel block is loaded with the second type of grayscale
  • the signal steps also include:
  • the unit pixel includes a blue sub-pixel, and a part of the unit pixel of the pixel block is loaded with the first type of gray-scale signal according to a preset rule, and the remaining unit pixel of the pixel block is loaded with the second type of gray
  • the steps of the order signal also include:
  • the blue sub-pixels of each first grouping unit in the pixel block are respectively loaded with the first-type grayscale signal and the second-type grayscale signal.
  • the first grouping unit includes two adjacent unit pixels, and each of the first There are no identical unit pixels in the grouping unit.
  • the unit pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel
  • the pixel driving method further includes steps:
  • two adjacent same-color sub-pixels of each first grouping unit in the pixel block are respectively loaded with the first-type grayscale signal and the second-type grayscale signal.
  • the method before the step of acquiring the pixel signal of each unit pixel in the pixel block, the method further includes:
  • the unit pixels in the first grouping unit of the pixel block are respectively loaded with a set of initial high-grayscale signals and initial low-grayscale signals.
  • the first grouping unit includes two adjacent unit pixels, and none of the first grouping units The same unit pixel.
  • a pixel driving device including:
  • the pixel signal acquisition circuit is used to acquire the pixel signal of each unit pixel in the pixel block;
  • the graininess judgment circuit is used to judge whether the pixel signal of the pixel block satisfies the first condition according to the pixel signal and signal judgment interval of each unit pixel, and the first condition is used to characterize the graininess of the pixel block during display;
  • the driving signal loading circuit is used to load the first-type grayscale signal to a part of the unit pixels of the pixel block according to the preset rule when the pixel signal of the pixel block meets the first condition, and to the remaining units of the pixel block
  • the pixels are loaded with the second-type grayscale signal, wherein the first-type grayscale signal is not equal to the corresponding second-type grayscale signal.
  • a computer device includes a memory and one or more processors.
  • the memory stores computer-readable instructions.
  • the one or more processors perform the following steps:
  • the pixel signal of each unit pixel and the signal judgment interval it is judged whether the pixel signal of the pixel block satisfies the first condition, and the first condition is used to indicate that the pixel block is grainy when displayed;
  • a first type of gray scale signal is loaded to a part of the unit pixels of the pixel block according to a preset rule, and a second type of gray scale is loaded to the remaining unit pixels of the pixel block Signal, wherein the first-level grayscale signal is not equal to the corresponding second-level grayscale signal.
  • the signal determination interval includes a first type interval and a second type interval
  • the step of determining whether the pixel signal of the pixel block satisfies the first condition according to the pixel signal and the signal determination interval of each unit pixel includes:
  • the first grouping unit includes two adjacent unit pixels, and there is no same unit pixel in each first grouping unit;
  • the signal judgment interval corresponding to the maximum first scale parameter satisfying the standard scale requirement is the first type interval, it is judged that the pixel signal of the pixel block meets the first condition
  • the maximum first scale parameter satisfying the standard scale requirement is the second type interval, it is determined that the pixel signal of the pixel block does not satisfy the first condition.
  • the processor also executes the following steps when executing the computer-readable instructions:
  • the maximum second scale parameter satisfying the standard scale requirement is the first type interval, it is determined that the pixel signal of the pixel block meets the first condition
  • the maximum second scale parameter satisfying the standard scale requirement is the second type interval, it is determined that the pixel signal of the pixel block does not satisfy the first condition.
  • the processor also executes the following steps when executing the computer-readable instructions:
  • the second grouping unit includes four adjacent unit pixels, and there is no difference in each first grouping unit Of unit pixels;
  • the processor also executes the following steps when executing the computer-readable instructions:
  • the first grouping unit includes two adjacent unit pixels, and each of the first grouping units No identical unit pixels;
  • the processor also executes the following steps when executing the computer-readable instructions:
  • the three red sub-pixels in each second grouping unit are loaded with the first-type gray-scale signal, and the remaining one red sub-pixel is loaded with the second-type gray-scale signal.
  • the processor also executes the following steps when executing the computer-readable instructions:
  • Figure 1 shows the change of pixel display brightness with gray scale signal under positive viewing angle and large viewing angle when VA liquid crystal technology is used for display driving
  • Fig. 2 shows how the display brightness of the main and sub-pixels changes with the gray-scale signal when the main and sub-pixels are respectively driven by different gray-scale signals
  • FIG. 3 is a schematic diagram of pixel voltage distribution of primary and secondary pixels in a pixel driving method in an embodiment
  • FIG. 5 is a schematic flowchart of a pixel driving method in an embodiment
  • FIG. 6 is a relationship table between the first-type grayscale signal and the second-type grayscale signal corresponding to each average pixel signal in an embodiment
  • FIG. 7 is a schematic flowchart of the step of determining whether the pixel signal of the pixel block satisfies the first condition in an embodiment
  • FIG. 9 is a schematic flowchart of a step of determining whether the pixel signal of the pixel block satisfies the first condition in another embodiment
  • 10 is a schematic diagram of the relationship between the signal judgment interval, the first condition, and the interval type in an embodiment
  • FIG. 11 is a schematic flowchart of a step of determining whether the pixel signal of the pixel block satisfies the first condition in another embodiment
  • FIG. 12 is a schematic flowchart of a pixel driving method in still another embodiment
  • FIG. 14 is a relationship table between the first-type grayscale signal and the second-type grayscale signal corresponding to each average pixel signal in yet another embodiment
  • 15 is a schematic flowchart of a pixel driving method in yet another embodiment
  • 16 is a schematic structural diagram of a pixel driving device in an embodiment
  • 17 is an internal structure diagram of a computer device in an embodiment.
  • a set of high-gray-scale signals RH and low-gray-scale signals RL can be used to replace the atomic pixels R1 and R2 signals.
  • the combination of low gray-scale signals can achieve the effect of improving the deviation of the visual role in the viewing angle.
  • the average brightness of this group of high-gray-scale signals RH and low-gray-scale signals RL can maintain the same brightness average of the two original independent sub-pixel signals R1 and R2.
  • the grayscale signals of each sub-pixel are 0, 1, ..., 255, then the above two original independent sub-pixel signals R1, R2 are also 0, 1, ...,
  • the gray-scale signal in 255, the average signal Rave of two adjacent sub-pixels of the same color in R1, R2 is also the gray-scale signal in 0, 1, ..., 255, the average signal Rave of two adjacent sub-pixels can be looked up in the table A set of high and low gray scale signal groups RH, RL corresponding to the average signal Rave. As shown in FIG. 3, two adjacent sub-pixels of the same color are driven and displayed with high and low gray scale signals, respectively.
  • the applicant has summarized the implementation process and found that the above-mentioned spatially high and low grayscale signals drive each sub-pixel to improve the visual role bias, but the disadvantage is that the bright and dark sub-pixels are interphase, and when the brightness difference between bright and dark sub-pixels is large, the display It is easy to be grainy at times, and the display quality cannot be guaranteed.
  • an embodiment of the present application provides a pixel driving method, including:
  • S40 Determine whether the pixel signal of the pixel block satisfies the first condition according to the pixel signal and signal judgment interval of each unit pixel, and the first condition is used to indicate that the pixel block is grainy when displayed;
  • a first type of grayscale signal is loaded to a part of the unit pixels of the pixel block according to a preset rule, and a second type is loaded to the remaining unit pixels of the pixel block Gray scale signal, wherein the gray signal of the first type is not equal to the corresponding gray signal of the second type.
  • the pixel block may be a block including a plurality of unit pixels, for example, one pixel block may be a block in units of n * m unit pixels.
  • the unit pixel includes one or more sub-pixels.
  • the unit sub-pixel may include a red sub-pixel, a green sub-pixel, and / or a blue sub-pixel.
  • the unit pixel may also include white sub-pixels and the like.
  • the signal judgment interval is a reference basis for judging whether a pixel block composed of each unit pixel has a grainy feeling during display, and each signal judgment interval corresponds to a plurality of average pixel signals. Taking the red sub-pixel and the green sub-pixel in each unit pixel as an example, as shown in FIG.
  • the average pixel signal Rave of the red sub-pixel is divided into multiple intervals: Rave-1, Rave-2, ..., Rave-i .
  • Rave-1 may correspond to the interval where the average pixel signal Rave is 0 to 1.
  • the preset rule is used to instruct the adjustment of the difference between the first type grayscale signal and the second type grayscale signal loaded by each unit pixel and to adjust the loading of the first type grayscale signal and the second type grayscale signal in the pixel block
  • the ratio of the sub-pixels to the rule of weakening the graininess of the pixel block display is set in advance through experience such as experiments.
  • the gray signal of the first type and the gray signal of the second type are correspondingly set, that is, each gray signal of the first type corresponds to a gray signal of the second type, and the value of the gray signal of the first type and the corresponding gray signal of the second type
  • the values of the signals are not equal.
  • the average signal of each unit pixel corresponds to a set of first-level grayscale signals and second-level grayscale signals.
  • the pixel signal of each unit pixel in the pixel block that is, the size of the grayscale signal of the original independent sub-pixel of each pixel block
  • determine the pixel block according to the pixel signal and signal determination interval of each unit pixel Whether it will be grainy during the overall display, if it is determined that the pixel block will be grainy during display, that is, the pixel signal of the pixel block meets the first condition, then a part of the unit pixels of the pixel block is Reload the first type of grayscale signal, and load the second type of grayscale signal to another part of the unit pixel, by reducing the size difference of the grayscale signal loaded on each sub-pixel of the pixel block and adjusting the loading high and low grayscale The proportion of the signal reduces the graininess of the pixel block during display.
  • the signal judgment interval includes a first type interval and a second type interval, and the pixel block is judged according to the pixel signal and signal judgment interval of each unit pixel The steps to determine whether the pixel signal of
  • the first type interval is used to characterize that the brightness difference of the high and low grayscale signals loaded by each unit pixel in the pixel block is large, and the proportion of subpixels loaded with the high and low grayscale signals is basically the same, which brings a grainy display The extent will be more obvious.
  • the second type interval is used to characterize the interval where the brightness difference between the high and low signals loaded by each unit pixel in the pixel block is small, and the human eye cannot perceive the graininess during display.
  • the average pixel signal of the entire pixel block can be obtained according to the collected pixel signals of each unit pixel, which is recorded as the first average pixel signal, and then the signal judgment interval corresponding to the first average pixel signal is obtained, and Determine whether the signal judgment interval is the first type interval or the second type interval.
  • the first type interval it means that when the pixel block is displayed as a whole, the difference between the high and low gray level signals is large, and the The proportion of unit pixels loaded with high and low grayscale signals is similar, and there is a high probability of graininess in the overall display.
  • the pixels are loaded with the second-type gray-scale signal, the difference between the first-type gray-scale signal and the corresponding second-type gray-scale signal is small, and the ratio of the sub-pixels loaded with high and low signals in the pixel block is adjusted and reduced.
  • the difference between the high and low gray level signals loaded on each sub-pixel reduces the graininess of the pixel block display.
  • the signal judgment interval includes the first type interval and the second type interval. According to the pixel signal and the signal judgment interval of each unit pixel, whether the pixel signal of the pixel block is judged
  • the steps to meet the first condition include:
  • the first grouping unit includes two adjacent unit pixels, and there is no same unit pixel in each first grouping unit;
  • the definitions of the first-type interval and the second-type interval are the same as those in the foregoing embodiment, and will not be repeated here.
  • the scale specification value is the lowest scale value that can affect the display effect of the unit pixel falling in each signal judgment interval when the pixel block is displayed.
  • the k second average pixel signals Rx-1, Rx-2, Rx-3, Rx-4, ..., Rx-k are located in the signal judgment interval Rave-1.
  • the first proportional parameter is RX1%, which is
  • the first proportional parameter in the interval Rave-2 is RX2%, ..., the first proportional parameter in the signal judgment interval Rave-i is RXi%.
  • the corresponding high-gray-level signals and low-gray-level signals have different brightness differences.
  • the adjacent red sub-pixel signals correspond to high- and low-signal brightness differences.
  • the proportion of sub-pixels loaded with high and low gray scale signals is not much different, it means that the pixel block presents high and low gray scale signals, which is easy to perceive graininess and image pixel quality. Therefore, according to the average pixel signal of adjacent red sub pixels Calculate which signal judgment interval the high and low gray level signals loaded in the pixel block are mainly concentrated in.
  • each first scale parameter is greater than or equal to the corresponding scale specification value (Rth1, Rth2, ..., Rthi)
  • the data whose proportion is too low and has too little influence on the overall display of the pixel block is selected .
  • the signal judgment interval corresponding to the largest first scale parameter if the interval is the first type interval, it means the pixels of the pixel block The voltage meets the first condition, that is, the pixel block has a grainy feel during display. If it is the second interval, it means that the pixel block has no graininess during display.
  • this judgment process is applicable to red sub-pixels, green sub-pixels, blue sub-pixels and / or white sub-pixels in each unit pixel, and each judgment process is directed to all kinds of same-color sub-units in each unit pixel Pixels.
  • the signal judgment interval includes a first type interval and a second type interval, and whether the pixel signal of the pixel block is judged according to the pixel signal and the signal judgment interval of each unit pixel
  • the steps to meet the first condition include:
  • S420 Obtain a second proportional parameter that is not less than the corresponding proportional specification value.
  • the corresponding proportional specification value is used to measure whether each first proportional parameter meets the standard proportional requirements of the corresponding signal judgment interval;
  • the second ratio parameter whose pixel signal value is located in each signal judgment interval is acquired, and then the second ratio parameter that does not meet the specification ratio requirement is excluded, and the second ratio that meets the specification ratio requirement is excluded.
  • Find the maximum value among the parameters to obtain the maximum second scale parameter. Determine whether the signal judgment interval corresponding to the maximum second scale parameter is the first type interval or the second type interval. If it is the first type interval, the corresponding pixel block's The pixel voltage meets the first condition. The pixel block is grainy when it is displayed. It is necessary to adjust the gray scale signal value loaded on each unit pixel. If it is the second type interval, it is determined that the corresponding pixel block is not grainy when it is displayed. .
  • the steps of acquiring the first-type grayscale signal and the second-type grayscale signal include:
  • the second grouping unit includes four adjacent unit pixels, and each of the first grouping units No identical unit pixels;
  • S52 Look up a table to obtain the first-type grayscale signal and the second-type grayscale signal corresponding to the average pixel signal of each second grouping unit.
  • a table can be obtained to obtain a set of the first type corresponding to the average pixel signal of 4 adjacent unit pixels in each second grouping unit of the pixel block Gray scale signal and the second type of gray scale signal.
  • three first-level grayscale signals and one second-level grayscale signal can be used to drive the four adjacent Unit pixels. Reducing the proportion of sub-pixels with large differences in high and low signal brightness in the pixel block makes the overall display non-grainy.
  • the steps of acquiring the first-type grayscale signal and the second-type grayscale signal further include:
  • the first grouping unit includes two adjacent unit pixels, and each first grouping No identical unit pixels in the unit;
  • S54 Look up a table to obtain the first-type grayscale signal and the second-type grayscale signal corresponding to the average pixel signal of each first grouping unit.
  • a table corresponding to the average pixel signal of the two adjacent unit pixels in each first grouping unit of the pixel block can be looked up in the table
  • the gray signal of the first type and the gray signal of the second type provide data for subsequent loading of the gray signal to each sub-pixel.
  • one first-type grayscale signal and one second-type grayscale signal may be used to drive the two adjacent unit pixels, so that the pixel block displays a good display effect under a wide viewing angle.
  • each unit pixel includes a red sub-pixel; according to a preset rule, a part of the unit pixels of the pixel block is loaded with the first type of gray-scale signal, and the remaining units of the pixel block
  • the steps of pixel loading the second type of gray-scale signal include:
  • the first-type gray-scale signal and the corresponding second-type gray-scale signal may be a high-level gray signal RH and a low-level gray signal RL, as shown in FIG. 13, It may be a middle and low gray level signal RM and a high gray level signal RL, respectively, as shown in FIG. 14, or may be a middle and low gray level signal RM and a low gray level signal RL, respectively.
  • each unit pixel includes a green sub-pixel, and a part of the unit pixels of the pixel block is loaded with the first-type gray-scale signal according to a preset rule, and the remaining units of the pixel block
  • the step of pixel loading the second type of gray-scale signal also includes:
  • the three green sub-pixels in the second grouping unit can be loaded with the first type of gray-scale signals that have been acquired, as The remaining one green sub-pixel is loaded with the second type of gray-scale signal, which reduces the proportion of green sub-pixels with a large difference in high and low signal brightness in the pixel block, thereby reducing the graininess of the overall display and ensuring the display quality.
  • the unit pixel includes a blue sub-pixel, and a part of the unit pixels of the pixel block is loaded with the first-type grayscale signal according to a preset rule, and the remaining units of the pixel block
  • the step of pixel loading the second type of gray-scale signal also includes:
  • the first grouping unit includes two adjacent unit pixels, and each There is no identical unit pixel in the first grouping unit.
  • the driving signal of the blue sub-pixel can use every two adjacent blue sub-pixels
  • a set of first-level grayscale signals and second-level grayscale signals corresponding to the average pixel signal of the pixels respectively replace the pixel signals B1, B2 originally loaded by the two adjacent blue sub-pixels.
  • the combination of the signal and the second-type grayscale signal can achieve the effect of improving the visual role deviation in the viewing angle, and the average brightness of the first-type grayscale signal and the second-type grayscale signal in the positive viewing angle can maintain the same as the original two.
  • the average brightness of the original independent blue sub-pixel signals B1 and B2 is presented.
  • the unit pixel includes a red subpixel, a green subpixel, and a blue subpixel
  • the pixel driving method further includes:
  • a set of first-level grayscale signals and second-level grayscale signals corresponding to the average pixel signal of every two adjacent sub-pixels of the same color can be used instead of the original adjacent
  • the pixel signal of the same-color sub-pixel enables the pixel block to effectively overcome the problem of deviation of the visual role during display and improve the display quality.
  • the first type of grayscale signal and the second type corresponding to the average pixel signal in FIG. 6 or FIG. 13 or FIG. 14 can be used
  • the gray-scale signal loads a new driving voltage to each sub-pixel.
  • the method before the step of acquiring the pixel signal of each unit pixel in the pixel block, the method further includes:
  • S10 Load a group of initial high grayscale signals and initial low grayscale signals into the unit pixels in the first grouping unit of the pixel block.
  • the first grouping unit includes two adjacent unit pixels, and each first grouping unit There are no identical unit pixels.
  • each two adjacent unit pixels are respectively loaded with an initial set of high grayscale signals and an initial low grayscale signal. Then determine whether the pixel block will have a graininess during display. If there is a graininess, you can obtain a set of the first type of grayscale signal and the second corresponding to the average pixel signal of every four adjacent subpixels of the same color Gray-scale-like signals, and load the first-type gray-scale signals and the second-type gray-scale signals for each unit pixel according to a preset rule.
  • a set of first-level gray-scale signals and second-level gray-scale signals corresponding to the average pixel signal of each two adjacent sub-pixels can be used to replace the original initial high-level gray-scale signal and the initial low-level signal Grayscale signal.
  • the original initial high gray level signal and the initial low gray level signal can be kept unchanged.
  • the initial high gray level signal and the initial low gray level signal may be obtained by looking up a table. It should be noted that the initial high-gray-scale signal and the initial low-gray-scale signal are loaded here, and are for the same-color sub-pixels in two adjacent unit pixels.
  • steps of the flowcharts in FIGS. 5-15 are displayed in order according to the arrows, the steps are not necessarily executed in the order indicated by the arrows. Unless clearly stated in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least some of the steps in FIGS. 5-15 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. These sub-steps or stages The execution order of is not necessarily sequential, but may be executed in turn or alternately with at least a part of other steps or sub-steps or stages of other steps.
  • a pixel driving device as shown in FIG. 16, includes:
  • the pixel signal acquisition circuit 10 is used to acquire the pixel signal of each unit pixel in the pixel block;
  • the graininess judgment circuit 20 is used for judging whether the pixel signal of the pixel block satisfies the first condition according to the pixel signal and the signal judgment interval of each unit pixel, and the first condition is used to characterize the graininess of the pixel block during display;
  • the driving signal loading circuit 30 is used to load the first-type grayscale signal to a part of the unit pixels of the pixel block according to a preset rule when the pixel signal of the pixel block satisfies the first condition, and to the remaining pixels of the pixel block
  • the unit pixel is loaded with the second-type grayscale signal, and the first-type grayscale signal is not equal to the corresponding second-type grayscale signal.
  • the pixel signal acquisition circuit 10 acquires the pixel signal of each unit pixel of each pixel block and sends it to the graininess judgment circuit 20, and then the graininess judgment circuit 20 judges based on the acquired pixel signal and signal judgment interval of each unit pixel Whether the corresponding pixel block is grainy when displayed, and sends the judgment result to the driving signal loading circuit 30.
  • the driving signal loading circuit 30 sends a part of the unit of the pixel block according to the preset rule A pixel is loaded with a first-type grayscale signal, and another part of unit pixels is loaded with a second-type grayscale signal.
  • the first-type grayscale signal is not equal to the corresponding second-type grayscale signal.
  • the pixel driving device provided by the embodiment of the present application determines whether the pixel block is grainy during display, and adjusts the size of the grayscale signal loaded on each sub-pixel of the pixel block accordingly, thereby reducing the display panel display composed of each pixel block The graininess of the time improves the display quality.
  • Each module in the above pixel driving device may be implemented in whole or in part by software, hardware, or a combination thereof.
  • the above modules may be embedded in the hardware or independent of the processor in the computer device, or may be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
  • a computer device is provided.
  • the computer device may be a server, and its internal structure may be as shown in FIG. 17.
  • the computer device includes a processor, memory, network interface, and database connected by a system bus.
  • the processor of the computer device is used to provide computing and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system, a computer program, and a database.
  • the internal memory provides an environment for the operating system and computer programs in the non-volatile storage medium.
  • the database of the computer device is used to store data such as the signal judgment interval, the first type gray scale signal and the second type gray scale signal.
  • the network interface of the computer device is used to communicate with external terminals through a network connection.
  • the computer program is executed by the processor to implement a pixel driving method.
  • FIG. 17 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied.
  • the specific computer device may It includes more or fewer components than shown in the figure, or some components are combined, or have a different component arrangement.
  • a computer device includes a memory and one or more processors.
  • the memory stores computer-readable instructions.
  • the one or more processors perform the following steps:
  • the computer device provided by the embodiment of the present application can determine whether the pixel block is displayed grainy according to the pixel signals of the sub-pixels of each pixel block during operation, and if there is a graininess, the preset preset Regularly load each type of pixel of the pixel block with the first type of gray level signal or the second type of gray level signal, adjust the proportion of sub-pixels in the pixel block with large difference between high and low gray level signals, thereby reducing the pixel
  • the graininess of the blocks during display improves the display quality.
  • the computer program is executed by a processor, the following steps are realized:
  • Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory can include random access memory (RAM) or external cache memory.
  • RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDRSDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous chain (Synchlink) DRAM
  • SLDRAM synchronous chain (Synchlink) DRAM
  • Rambus direct RAM
  • DRAM direct memory bus dynamic RAM
  • RDRAM memory bus dynamic RAM

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Abstract

像素驱动方法：获取像素区块中各单位像素的像素信号(S20)；根据各单位像素的像素信号和信号判断区间，判断对应的像素区块的像素信号是否满足第一条件(S40)；若判定显示时有颗粒感，按照预设规则向像素区块中的一部分单位像素加载第一类灰阶信号，并向另一部分单位像素加载第二类灰阶信号(S60)，其中，第一类灰阶信号与对应的第二类灰阶信号不相等。通过控制加载第一类灰阶信号和第二类灰阶信号的单位像素比例和减小像素信号差异，改善显示质量。

Description

像素驱动方法、像素驱动装置和计算机设备
本申请要求于2018年11月20日提交中国专利局，申请号为201811384543.2，申请名称为“像素驱动方法、像素驱动装置和计算机设备”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
本申请涉及一种像素驱动方法、像素驱动装置和计算机设备。
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。
目前，大尺寸显示面板多半采用VA(VerticalAlignment liquid crystal，垂直配向)型液晶技术或IPS(In-Plane Switching，平面转换)液晶技术，VA(VerticalAlignment liquid crystal，垂直配向)型液晶技术相较于IPS(In-Plane Switching，平面转换)液晶技术，生产效率高，成本低，但光学性质上相较于IPS(In-Plane Switching，平面转换)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，但如附图1所示，采用VA(VerticalAlignment liquid crystal，垂直配向)型液晶技术进行显示驱动时，大视角亮度随信号快速饱和(如曲线2所示)，从而造成视角画质对比及色偏相较于正视的画质(如曲线1所示，正视角下亮度随信号变化情况)品质恶化严重。
目前，示例性技术所提供的像素驱动方法会因亮暗子像素相间造成画面整体有颗粒感。
申请内容
本申请的目的在于，提供一种像素驱动方法、像素驱动装置和计算机设备，以避免画面显示时有颗粒感，从而提高显示质量。
一方面，本申请实施例提供了一种像素驱动方法，包括：
获取像素区块中各单位像素的像素信号；
根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件，第一条件用于表征像素区块显示时有颗粒感；
若判定像素区块的像素信号满足第一条件，则按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号，其中，第一类灰阶信号与对应的第二类灰阶信号不相等。
本申请实施例提供的像素驱动方法，通过获取像素区块中各单位像素的像素信号，并根据各单位像素的像素信号和信号判断区间，判断对应的像素区块的像素信号是否满足第一条件(是否有颗粒感)，若判断显示时有颗粒感，则为像素区块内的各单位像素加载新的第一类灰阶信号和第二类灰阶信号，通过控制加载第一类灰阶信号和第二类灰阶信号的单位像素比例和减小像素信号差异，改善像素区块显示时的颗粒感。
在其中一个实施例中，信号判断区间包括第一类区间和第二类区间，根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件的步骤包括：
获得像素区块中各第一分组单元的第二平均像素信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
获得第二平均像素信号位于各信号判断区间的第一比例参数；
获得不小于对应的比例规范值的第一比例参数，对应的比例规范值用于衡量各第一比例参数是否符合相应信号判断区间的规范比例要求；
若满足规范比例要求的最大第一比例参数对应的信号判断区间为第一类区间，则判定 像素区块的像素信号满足第一条件；
若满足规范比例要求的最大第一比例参数为第二类区间，则判定像素区块的像素信号不满足第一条件。
在其中一个实施例中，信号判断区间包括第一类区间和第二类区间，根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件的步骤包括：
获得单位像素的像素信号位于各信号判断区间的第二比例参数；
获得不小于对应的比例规范值的第二比例参数，对应的比例规范值用于衡量各第一比例参数是否符合相应信号判断区间的规范比例要求；
若满足规范比例要求的最大第二比例参数为第一类区间，则判定像素区块的像素信号满足第一条件；
若满足规范比例要求的最大第二比例参数为第二类区间，则判定像素区块的像素信号不满足第一条件。
在其中一个实施例中，第一类灰阶信号和第二类灰阶信号的获取步骤包括：
若判定像素区块的像素信号满足第一条件，则获取像素区块中各第二分组单元的平均像素信号，第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
查表获得各第二分组单元的平均像素信号对应的第一类灰阶信号和第二类灰阶信号。
在其中一个实施例中，第一类灰阶信号和第二类灰阶信号的获取步骤包括：
若判定像素区块的像素信号不满足第一条件，则获取像素区块中各第一分组单元的平均像素信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
查表获得各第一分组单元的平均像素信号对应的第一类灰阶信号和第二类灰阶信号。
在其中一个实施例中，单位像素包括红色子像素；按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号的步骤包括：
若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个红色子像素加载第一类灰阶信号，为剩余的一个红色子像素加载第二类灰阶信号。
在其中一个实施例中，单位像素包括绿色子像素，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号的步骤还包括：
若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个绿色子像素加载第一类灰阶信号，为剩余的一个绿色子像素加载第二类灰阶信号。
在其中一个实施例中，单位像素包括蓝色子像素，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号的步骤还包括：
为像素区块中的各第一分组单元的的蓝色子像素分别加载第一类灰阶信号和第二类灰阶信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素。
在其中一个实施例中，单位像素包括红色子像素、绿色子像素和蓝色子像素，像素驱动方法还包括步骤：
若判定像素区块的像素信号不满足第一条件，则为像素区块中的各第一分组单元的两个相邻同色子像素分别加载第一类灰阶信号和第二类灰阶信号。
在其中一个实施例中，在获取像素区块中各单位像素的像素信号的步骤之前还包括：
向像素区块的第一分组单元中的单位像素分别加载一组初始高灰阶信号和初始低灰阶信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素。
一种像素驱动装置，包括：
像素信号获取电路，用于获取像素区块中各单位像素的像素信号；
颗粒感判断电路，用于根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件，第一条件用于表征像素区块显示时有颗粒感；
驱动信号加载电路，用于在判定像素区块的像素信号满足第一条件时，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号，其中，第一类灰阶信号与对应的第二类灰阶信号不相等。
一种计算机设备，包括存储器及一个或多个处理器，存储器中储存有计算机可读指令，计算机可读指令被一个或多个处理器执行时，使得一个或多个处理器执行以下步骤：
获取像素区块中各单位像素的像素信号；
根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件，第一条件用于表征像素区块显示时有颗粒感；
若判定像素区块的像素信号满足第一条件，则按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号，其中，第一类灰阶信号与对应的第二类灰阶信号不相等。
在其中一个实施例中，信号判断区间包括第一类区间和第二类区间，根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件的步骤包括：
获得像素区块中各第一分组单元的第二平均像素信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
获得第二平均像素信号位于各信号判断区间的第一比例参数；
获得不小于对应的比例规范值的第一比例参数，对应的比例规范值用于衡量各第一比例参数是否符合相应信号判断区间的规范比例要求；
若满足规范比例要求的最大第一比例参数对应的信号判断区间为第一类区间，则判定像素区块的像素信号满足第一条件；
若满足规范比例要求的最大第一比例参数为第二类区间，则判定像素区块的像素信号不满足第一条件。
在其中一个实施例中，处理器执行计算机可读指令时还执行以下步骤：
获得单位像素的像素信号位于各信号判断区间的第二比例参数；
获得不小于对应的比例规范值的第二比例参数，对应的比例规范值用于衡量各第一比例参数是否符合相应信号判断区间的规范比例要求；
若满足规范比例要求的最大第二比例参数为第一类区间，则判定像素区块的像素信号满足第一条件；
若满足规范比例要求的最大第二比例参数为第二类区间，则判定像素区块的像素信号不满足第一条件。
在其中一个实施例中，处理器执行计算机可读指令时还执行以下步骤：
若判定像素区块的像素信号满足第一条件，则获取像素区块中各第二分组单元的平均像素信号，第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
查表获得各第二分组单元的平均像素信号对应的第一类灰阶信号和第二类灰阶信号。
在其中一个实施例中，处理器执行计算机可读指令时还执行以下步骤：
若判定像素区块的像素信号不满足第一条件，则获取像素区块中各第一分组单元的平均像素信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
查表获得各第一分组单元的平均像素信号对应的第一类灰阶信号和第二类灰阶信号。
在其中一个实施例中，处理器执行计算机可读指令时还执行以下步骤：
若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个红色子像素加载第一类灰阶信号，为剩余的一个红色子像素加载第二类灰阶信号。
在其中一个实施例中，处理器执行计算机可读指令时还执行以下步骤：
若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个绿色子像素加载第一类灰阶信号，为剩余的一个绿色子像素加载第二类灰阶信号。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图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的前提下，还可以根据这些附图获得其它的附图。
图1为采用VA型液晶技术进行显示驱动时，正视角和大视角下像素显示亮度随灰阶信号变化情况；
图2为对主次像素分别加载不同灰阶信号驱动时，正视角和大视角下主次像素显示亮度随灰阶信号变化情况；
图3为一个实施例中像素驱动方法的主次像素的像素电压分配示意图；
图4为一个实施例中主次像素分别加载的高低灰阶信号及平均像素信号之间的关系表；
图5为一个实施例中像素驱动方法的流程示意图；
图6为一个实施例中各平均像素信号对应的第一类灰阶信号和第二类灰阶信号关系表；
图7为一个实施例中判断像素区块的像素信号是否满足第一条件步骤的流程示意图；
图8为一个实施例中信号判断区间与区间类型的关系示意图；
图9为另一个实施例中判断像素区块的像素信号是否满足第一条件步骤的流程示意图；
图10为一个实施例中信号判断区间、第一条件与区间类型的关系示意图；
图11为又一个实施例中判断像素区块的像素信号是否满足第一条件步骤的流程示意图；
图12为再一实施例中像素驱动方法的流程示意图；
图13为再一实施例中各平均像素信号对应的第一类灰阶信号和第二类灰阶信号关系表；
图14为又一实施例中各平均像素信号对应的第一类灰阶信号和第二类灰阶信号关系表；
图15为又一个实施例中像素驱动方法的流程示意图；
图16为一个实施例中像素驱动装置的结构示意图；
图17为一个实施例中计算机设备的内部结构图。
具体实施方式
为了使本申请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。
需要说明的是，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件并与之结合为一体，或者可能同时存在居中元件。本文所使用的术语“安装”、“一端”、“另一端”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的 实施例的目的，不是旨在于限制本申请。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
在一个示例性技术中，通过将两两相邻的红色子像素(绿色子像素/蓝色子像素)分为主次像素，然后对主次像素加载不同的灰阶电压，即如图1所示，划分为主次像素并加载不同灰阶信号驱动时(曲线3为主像素亮度随信号变化情况，曲线4为次像素亮度随信号变化情况)，由主次像素组成的显示面板的侧视亮度随信号变化曲线(曲线5)较为接近正视亮度随信号变化曲线(曲线1)，如图2所示，以绿色子像素为例，藉由空间上设计主次像素并给予不同的驱动信号来解决视角色偏的缺陷。
参考附图3，藉由在空间上牺牲空间解析度，对于红色子像素，可以用一组高灰阶信号RH、低灰阶信号RL来代替原子像素R1、R2信号，该高灰阶信号与低灰阶信号的配合在视角上可以达成改善视角色偏的效果。正视角下，这一组高灰阶信号RH、低灰阶信号RL的平均亮度可以维持同原两个原独立子像素信号R1、R2的亮度平均值呈现。参考附图4说明，以8bit的显示器驱动为例，各子像素的灰阶信号为0、1、…、255，则上述两个原独立子像素信号R1、R2亦为0、1、…、255中的灰阶信号，R1、R2两个相邻同色子像素的平均信号Rave亦同样为0、1、…、255中的灰阶信号，两相邻子像素的平均信号Rave查表可以查找到该平均信号Rave对应的一组高低灰阶信号组RH、RL。如附图3，相邻两同色子像素分别以高、低灰阶信号驱动显示。但申请人在实施过程汇总，发现上述空间上高、低灰阶信号驱动各子像素的方式，可以改善视角色偏，但缺点为亮暗子画素相间，亮暗子的亮度差异大时，显示时易有颗粒感，显示品质无法保证。
基于此，有必要针对画面显示有颗粒感的问题，提供一种像素驱动方法、像素驱动装置及计算机设备和计算机可读存储介质。
一方面，如图5所示，本申请实施例提供了一种像素驱动方法，包括：
S20：获取像素区块中各单位像素的像素信号；
S40：根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件，第一条件用于表征像素区块显示时有颗粒感；
S60：若判定像素区块的像素信号满足第一条件，则按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号，其中，第一类灰阶信号与对应的第二类灰阶信号不相等。
像素区块可以是包括多个单位像素的区块，例如一个像素区块可以是以n*m个单位像素为单位的区块。单位像素包括一个或多个子像素，例如，单位子像素可以包括红色子像素、绿色子像素和/或蓝色子像素。单位像素还可以包括白色子像素等。信号判断区间是用于判断由各单位像素组成的像素区块在显示时是否有颗粒感的参考依据，每个信号判断区间对应多个平均像素信号。以各单位像素中的红色子像素和绿色子像素为例，如图6所示，将红色子像素的平均像素信号Rave分为多个区间：Rave-1、Rave-2、…、Rave-i。对于某些区间来说，在高、低灰阶信号亮度差异大，且加载高、低灰阶信号的子像素比例相同时，整体显示时带来颗粒感的程度会较明显。Rave-1可以对应平均像素信号Rave为0至1的区间。预设规则是用于指示调节各单位像素加载的第一类灰阶信号和第二类灰阶信号的差值大小以及调节像素区块中加载第一类灰阶信号和第二类灰阶信号的子像素的比例，以减弱像素区块显示时的颗粒感的规则，是通过实验等经验预先设置好的。第一类灰阶信号和第二类灰阶信号对应设置，即每个第一类灰阶信号对应一个第二类灰阶信号，第一类灰阶信号的值与其对应的第二类灰阶信号的值不相等。可选的，各单位像素的平均信号各对应一组第一类灰阶信号和第二类灰阶信号。
具体的，首先获取像素区块中各单位像素的像素信号，即获取各像素区块原独立子像素灰阶信号的大小，并根据各单位像素的像素信号和信号判断区间，判断该像素区块在整体显示时，是否会有颗粒感，若判定像素区块在显示时会有颗粒感，即像素区块的像素信 号符合第一条件，则按照预设规则向该像素区块的一部分单位像素重新加载第一类灰阶信号，并向另一部分单位像素加载第二类灰阶信号，通过减小像素区块的各子像素上加载的灰阶信号的大小差异以及调节加载高、低灰阶信号的比例，来减弱像素区块在显示时的颗粒感。
在其中一个实施例中，如图7和图8所示，信号判断区间包括第一类区间和第二类区间，根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否满足第一条件的步骤包括：
S41：根据像素区块中各单位像素的像素信号，获得像素区块的第一平均像素信号；
S42：若第一平均像素信号对应的信号判断区间为第一类区间，则判定像素区块的像素信号满足第一条件；
S43：若第一平均像素信号对应的信号判断区间为第二类区间，则判定像素区块的像素信号不满足第一条件。
第一类区间用于表征像素区块中各单位像素加载的高、低灰阶信号亮度差异大，且加载高、低灰阶信号的子像素比例基本相同时，整体显示时带来颗粒感的程度会较明显的区间。第二类区间用于表征该像素区块中各单位像素加载的高、低信号后显示的亮度差异小，显示时人眼察觉不到颗粒感的区间。
具体的，在进行单位像素加载的灰阶信号调整前，需要获知各像素区块在显示时是否存在颗粒感。在一个实施例中，可以根据采集的各单位像素的像素信号，获得整个像素区块的平均像素信号，记为第一平均像素信号，然后获取该第一平均像素信号对应的信号判断区间，再判断该信号判断区间为第一类区间还是第二类区间，如图8所示，若为第一类区间，则说明该像素区块整体显示时，高、低灰阶信号差异大，且分别加载了高、低灰阶信号的单位像素比例相似，整体显示时存在颗粒感的概率大，为保证显示质量，可以按照预设规则向一部分单位像素加载第一类灰阶信号，向另一部分单位像素加载第二类灰阶信号，第一类灰阶信号和对应的第二类灰阶信号的差值较小，通过调整像素区块中加载高、低信号的子像素的比例，并减小加载在各子像素上的高、低灰阶信号的差异，从而减小像素区块显示时的颗粒感。
在其中一个实施例中，如图9和图10所示，信号判断区间包括第一类区间和第二类区间，根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件的步骤包括：
S44：获得像素区块中各第一分组单元的第二平均像素信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
S45：获得第二平均像素信号位于各信号判断区间的第一比例参数；
S46：获得不小于对应的比例规范值的第一比例参数，对应的比例规范值用于衡量各第一比例参数是否符合相应信号判断区间的规范比例要求；
S47：若满足规范比例要求的最大第一比例参数对应的信号判断区间为第一类区间，则判定像素区块的像素信号满足第一条件；
S48：若满足规范比例要求的最大第一比例参数为第二类区间，则判定像素区块的像素信号不满足第一条件。
第一类区间和第二类区间的释义与上述实施例中相同，在此不做赘述。比例规范值是落在各信号判断区间的单位像素能够在像素区块显示时影响显示效果的最低比例值。
具体的，以单位像素中的红色子像素为例，若某个像素区块包括n*m个单位像素，获得该像素区块内k个第一分组单元中两两相邻红色子像素的平均像素信号：Rx-1、Rx-2,Rx-3、Rx-4、…、Rx-k，记为第二平均像素信号，统计该像素区块内的k个第二平均像素信号在信号判断区间Rave-1、Rave-2、…、Rave-i中各占的比例，即第一比例参数。例如，该k个第二平均像素信号Rx-1、Rx-2,Rx-3、Rx-4、…、Rx-k位于信号判断区间Rave-1 的第一比例参数为RX1％，位于信号判断区间R ave-2的第一比例参数为RX2％，……，位于信号判断区间R ave-i的第一比例参数为RXi％。
当相邻红色子像素信号在不同的信号判断区间时对应的高灰阶信号与低灰阶信号对应的亮度差异大小并不相同，当相邻红色子像素信号对应的高、低信号亮度差异大且加载了高、低灰阶信号的子像素比例相差不大时，代表该像素区块呈现高低灰阶信号容易被察觉颗粒感而影像画素品质，因此根据相邻红色子像素的平均像素信号可以统计出该像素区块加载的高、低灰阶信号主要集中在哪个信号判断区间。
如图10所示，通过判断各第一比例参数是否大于等于对应的比例规范值(Rth1、Rth2、…、Rthi)，筛选出那些占比过低，对像素区块整体显示影响过小的数据，然后在符合规范比例要求的第一比例参数中，获取最大的第一比例参数，最大的第一比例参数对应的信号判断区间，若该区间为第一类区间，则说明像素区块的像素电压符合第一条件，即像素区块在显示时有颗粒感，若为第二区间，则说明像素区块在显示时无颗粒感。需要说明的时，此判断过程适用于各单位像素中的红色子像素、绿色子像素、蓝色子像素和/或白色子像素等，每个判断过程针对于各单位像素中的各类同色子像素。
在其中一个实施例中，如图10和图11所示，信号判断区间包括第一类区间和第二类区间，根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件的步骤包括：
S410：获得单位像素的像素信号位于各信号判断区间的第二比例参数；
S420：获得不小于对应的比例规范值的第二比例参数，对应的比例规范值用于衡量各第一比例参数是否符合相应信号判断区间的规范比例要求；
S430：若满足规范比例要求的最大第二比例参数为第一类区间，则判定像素区块的像素信号满足第一条件；
S440：若满足规范比例要求的最大第二比例参数为第二类区间，则判定像素区块的像素信号不满足第一条件。
第一类区间、第二类区间和比例规范值等名词的释义与上述实施例中相同，在此不做赘述。
具体的，在获取各单位像素的像素信号后，获取像素信号值位于各信号判断区间的第二比例参数，然后排除不符合规范比例要求的第二比例参数，在符合规范比例要求的第二比例参数中找最大值，得到最大第二比例参数，判断最大第二比例参数对应的信号判断区间为第一类区间还是第二类区间，若为第一类区间，则判定对应的像素区块的像素电压符合第一条件，该像素区块显示时有颗粒感，需要调整加载在各单位像素上的灰阶信号值，若为第二类区间，则判定对应的像素区块显示时无颗粒感。
在其中一个实施例中，如图12所示，第一类灰阶信号和第二类灰阶信号的获取步骤包括：
S51：若判定像素区块的像素信号满足第一条件，则获取像素区块中各第二分组单元的平均像素信号，第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
S52：查表获得各第二分组单元的平均像素信号对应的第一类灰阶信号和第二类灰阶信号。
判定对应的像素区块显示时有颗粒感，如图12所示，可查表得到该像素区块的各第二分组单元中4个相邻单位像素的平均像素信号对应的一组第一类灰阶信号和第二类灰阶信号。在判定像素区块的像素电压符合第一条件时，即该像素区块显示时有颗粒感，可以采用3个第一类灰阶信号与1个第二类灰阶信号驱动这4个相邻的单位像素。降低像素区块中高、低信号亮度差异大的子像素的比例，使得整体显示无颗粒感。
在其中一个实施例中，如图12所示，第一类灰阶信号和第二类灰阶信号的获取步骤 还包括：
S53：若判定像素区块的像素信号不满足第一条件，则获取像素区块中各第一分组单元的平均像素信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
S54：查表获得各第一分组单元的平均像素信号对应的第一类灰阶信号和第二类灰阶信号。
对于判定对应的像素区块显示时无颗粒感的，如图12所示，可查表得到该像素区块的各第一分组单元中的2个相邻单位像素的平均像素信号对应的一组第一类灰阶信号和第二类灰阶信号，为后续向各子像素加载灰阶信号提供数据。可选的，可以采用一个第一类灰阶信号和1个第二类灰阶信号驱动这两个相邻的单位像素，以使得该像素区块显示时在广视角下，显示效果好。
在其中一个实施例中，如图12所示，各单位像素包括红色子像素；按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号步骤包括：
S61：若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个红色子像素加载第一类灰阶信号，为剩余的一个红色子像素加载第二类灰阶信号。
若某个像素区块显示时有颗粒感，以每四个相邻的红色子像素为一个第二分组单元，根据事先获取的第一类灰阶信号和第二类灰阶信号，向其中3个红色子像素加载第一类灰阶信号，并且向1个红色子像素加载第二类灰阶信号，降低该像素区块中的高、低信号亮度差异大的红色子像素所占的比例，从而减弱整体显示时的颗粒感，保证显示品质。以红色子像素为例，如图6所示，第一类灰阶信号和对应的第二类灰阶信号可以分别是高灰阶信号RH和低灰阶信号RL，如图13所示，也可以分别是中低灰阶信号RM和高灰阶信号RL，如图14所示，也可以分别是中低灰阶信号RM和低灰阶信号RL。
在其中一个实施例中，如图12所示，各单位像素包括绿色子像素，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号的步骤还包括：
S62：若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个绿色子像素加载第一类灰阶信号，为剩余的一个绿色子像素加载第二类灰阶信号。
同理，对于单位像素中的绿色子像素，若判定对应的像素区块显示时有颗粒感，则可以为第二分组单元中三个绿色子像素加载已经获取的第一类灰阶信号，为剩余的一个绿色子像素加载第二类灰阶信号，降低该像素区块中的高、低信号亮度差异大的绿色子像素所占的比例，从而减弱整体显示时的颗粒感，保证显示品质。
在其中一个实施例中，如图12所示，单位像素包括蓝色子像素，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号的步骤还包括：
S63：为像素区块中的各第一分组单元的的蓝色子像素分别加载第一类灰阶信号和第二类灰阶信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素。
由于人眼对蓝色色彩亮度变化的敏感度较低，肉眼对于蓝色子像素亮暗亮度差异敏感度不高，故对于蓝色子像素的驱动信号，可以采用每两个相邻蓝色子像素的平均像素信号对应的一组第一类灰阶信号和第二类灰阶信号来分别代替这两个相邻的蓝色子像素原来加载的像素信号B1、B2，该第一类灰阶信号和第二类灰阶信号的配合在视角上可以达成改善视角色偏的效果，且正视角下这一组第一类灰阶信号、第二类灰阶信号的平均亮度可以维持同原两个原独立的蓝色子像素信号B1、B2的亮度平均值呈现。
在其中一个实施例中，如图15所示，单位像素包括红色子像素、绿色子像素和蓝色 子像素，像素驱动方法还包括：
S64：若判定像素区块的像素信号不满足第一条件，则为像素区块中的各第一分组单元的两个相邻同色子像素分别加载第一类灰阶信号和第二类灰阶信号。
对于显示时无颗粒感的像素区块，可以采用每两个相邻的同色子像素的平均像素信号所对应的一组第一类灰阶信号和第二类灰阶信号，替代原相邻的同色子像素的像素信号，使得像素区块在显示时能够有效克服视角色偏的问题，提高显示质量。例如，对于红色子像素来说，若判定像素区块显示时无颗粒感，则可以根据附图6或附图13或附图14中平均像素信号对应的第一类灰阶信号和第二类灰阶信号，向各子像素加载新的驱动电压。
在其中一个实施例中，如图15所示，在获取像素区块中各单位像素的像素信号的步骤之前还包括：
S10：向像素区块的第一分组单元中的单位像素分别加载一组初始高灰阶信号和初始低灰阶信号，第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素。
为了更好的保证像素区块显示时的大视角显示效果，在初始化时，为每两个相邻的单位像素分别加载一组初始高灰阶信号和初始低灰阶信号。再判断该像素区块在显示时是否会有颗粒感，若有颗粒感，则可以获取每四个相邻的同色子像素的平均像素信号所对应的一组第一类灰阶信号和第二类灰阶信号，并按照预设规则为各单位像素加载该第一类灰阶信号和第二类灰阶信号。若判定无颗粒感，则可以采用每两个相邻子像素的平均像素信号所对应的一组第一类灰阶信号和第二类灰阶信号，替代原来的初始高灰阶信号和初始低灰阶信号。或者在判定无颗粒感时，可以保持原来的初始高灰阶信号和初始低灰阶信号不变。初始高灰阶信号和初始低灰阶信号可以是通过查表得到的。需要说明的是，此处加载初始高灰阶信号和初始低灰阶信号，均针对于相邻两单位像素中的同色子像素而言。
应该理解的是，虽然图5-15中的流程图的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，图5-15中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些子步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
一种像素驱动装置，如图16所示，包括：
像素信号获取电路10，用于获取像素区块中各单位像素的像素信号；
颗粒感判断电路20，用于根据各单位像素的像素信号和信号判断区间，判断像素区块的像素信号是否满足第一条件，第一条件用于表征像素区块显示时有颗粒感；
驱动信号加载电路30，用于在判定像素区块的像素信号满足第一条件时，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，并向像素区块的剩余的单位像素加载第二类灰阶信号，第一类灰阶信号与对应的第二类灰阶信号不相等。
像素区块、单位像素等释义与上述方法实施例中相同，在此不做赘述。具体的，像素信号获取电路10获取各像素区块的各单位像素的像素信号并发送至颗粒感判断电路20，然后颗粒感判断电路20根据获取的各单位像素的像素信号和信号判断区间，判断对应的像素区块显示时是否有颗粒感，并将判断结果发送至驱动信号加载电路30，驱动信号加载电路30在判断结果为符合第一条件时，按照预设规则向像素区块的一部分单位像素加载第一类灰阶信号，向另一部分单位像素加载第二类灰阶信号，第一类灰阶信号与对应的第二类灰阶信号不相等。本申请实施例提供的像素驱动装置，通过判断像素区块显示时是否有颗粒感，对应调整像素区块的各子像素加载的灰阶信号大小，从而减弱由各像素区块构成的显示面板显示时的颗粒感，提高显示质量。
而且，关于像素驱动装置的具体限定可以参见上文中对于像素驱动方法的限定，在此不再赘述。上述像素驱动装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一个实施例中，提供了一种计算机设备，该计算机设备可以是服务器，其内部结构图可以如图17所示。该计算机设备包括通过系统总线连接的处理器、存储器、网络接口和数据库。该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统、计算机程序和数据库。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该计算机设备的数据库用于存储信号判断区间、第一类灰阶信号和第二类灰阶信号等数据。该计算机设备的网络接口用于与外部的终端通过网络连接通信。该计算机程序被处理器执行时以实现一种像素驱动方法。
本领域技术人员可以理解，图17中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
一种计算机设备，包括存储器及一个或多个处理器，存储器中储存有计算机可读指令，计算机可读指令被一个或多个处理器执行时，使得一个或多个处理器执行以下步骤：
S20：获取各像素区块的各单位像素的像素信号；
S40：根据各单位像素的像素信号和信号判断区间，判断对应的像素区块显示时是否有颗粒感；
S60：根据判断结果，按照预设规则向对应的像素区块的各单位像素加载第一类灰阶信号或第二类灰阶信号，第一类灰阶信号大于对应的第二类灰阶信号。
本申请实施例提供的计算机设备，在运行时，可以根据各像素区块的子像素的像素信号，判断该像素区块显示时是否有颗粒感，若有颗粒感，则按照预先存储的预设规则向该像素区块的各单位像素加载第一类灰阶信号或第二类灰阶信号，调整该像素区块中高、低灰阶信号差异大的子像素的占比，从而减小该像素区块在显示时的颗粒感，提升显示品质。
一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现以下步骤：
S20：获取各像素区块的各单位像素的像素信号；
S40：根据各单位像素的像素信号和信号判断区间，判断对应的像素区块显示时是否有颗粒感；
S60：根据判断结果，按照预设规则向对应的像素区块的各单位像素加载第一类灰阶信号或第二类灰阶信号，第一类灰阶信号大于对应的第二类灰阶信号。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。本申请所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存储器总线(Rambus)直接RAM(RDRAM)、直接存储器总线动态RAM(DRDRAM)、以及存储器总线动态RAM(RDRAM)等。
以上所述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。
以上所述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本申请专利范围的限制。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. 一种像素驱动方法，包括：
    获取像素区块中各单位像素的像素信号；
    根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否满足第一条件，所述第一条件用于表征所述像素区块显示时有颗粒感；
    若判定所述像素区块的像素信号满足所述第一条件，则按照预设规则向所述像素区块的一部分单位像素加载第一类灰阶信号，并向所述像素区块的剩余的单位像素加载第二类灰阶信号，其中，所述第一类灰阶信号与对应的所述第二类灰阶信号不相等。
  2. 根据权利要求1所述的像素驱动方法，其中，所述信号判断区间包括第一类区间和第二类区间，根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否满足第一条件的步骤包括：
    获得所述像素区块中各第一分组单元的第二平均像素信号，所述第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
    获得所述第二平均像素信号位于各所述信号判断区间的第一比例参数；
    获得不小于对应的比例规范值的第一比例参数，所述对应的比例规范值用于衡量各所述第一比例参数是否符合相应信号判断区间的规范比例要求；
    若满足规范比例要求的最大第一比例参数对应的信号判断区间为第一类区间，则判定所述像素区块的像素信号满足第一条件；
    若满足规范比例要求的最大第一比例参数为第二类区间，则判定所述像素区块的像素信号不满足第一条件。
  3. 根据权利要求1所述的像素驱动方法，其中，所述信号判断区间包括第一类区间和第二类区间，根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否满足第一条件的步骤包括：
    获得所述单位像素的像素信号位于各所述信号判断区间的第二比例参数；
    获得不小于对应的比例规范值的第二比例参数，所述对应的比例规范值用于衡量各所述第一比例参数是否符合相应信号判断区间的规范比例要求；
    若满足规范比例要求的最大第二比例参数为第一类区间，则判定所述像素区块的像素信号满足第一条件；
    若满足规范比例要求的最大第二比例参数为第二类区间，则判定所述像素区块的像素信号不满足第一条件。
  4. 根据权利要求1所述的像素驱动方法，其中，所述第一类灰阶信号和所述第二类灰阶信号的获取步骤包括：
    若判定所述像素区块的像素信号满足第一条件，则获取所述像素区块中各第二分组单元的平均像素信号，所述第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
    查表获得各所述第二分组单元的平均像素信号对应的所述第一类灰阶信号和所述第二类灰阶信号。
  5. 根据权利要求3所述的像素驱动方法，其中，所述第一类灰阶信号和所述第二类灰阶信号的获取步骤包括：
    若判定所述像素区块的像素信号满足第一条件，则获取所述像素区块中各第二分组单元的平均像素信号，所述第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
    查表获得各所述第二分组单元的平均像素信号对应的所述第一类灰阶信号和所述第二类灰阶信号。
  6. 根据权利要求1所述的像素驱动方法，其中，所述第一类灰阶信号和所述第二类 灰阶信号的获取步骤包括：
    若判定所述像素区块的像素信号不满足第一条件，则获取所述像素区块中各所述第一分组单元的平均像素信号，所述第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
    查表获得各所述第一分组单元的平均像素信号对应的所述第一类灰阶信号和所述第二类灰阶信号。
  7. 根据权利要求4所述的像素驱动方法，其中，所述单位像素包括红色子像素；所述按照预设规则向所述像素区块的一部分单位像素加载第一类灰阶信号，并向所述像素区块的剩余的单位像素加载第二类灰阶信号的步骤包括：
    若判定像素区块的像素信号满足第一条件，则为各所述第二分组单元中的三个红色子像素加载所述第一类灰阶信号，为剩余的一个红色子像素加载所述第二类灰阶信号。
  8. 根据权利要求7所述的像素驱动方法，其中，所述单位像素包括绿色子像素，所述按照预设规则向所述像素区块的一部分单位像素加载第一类灰阶信号，并向所述像素区块的剩余的单位像素加载第二类灰阶信号的步骤还包括：
    若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个绿色子像素加载所述第一类灰阶信号，为剩余的一个绿色子像素加载所述第二类灰阶信号。
  9. 根据权利要求8所述的像素驱动方法，其中，所述单位像素包括蓝色子像素，所述按照预设规则向所述像素区块的一部分单位像素加载第一类灰阶信号，并向所述像素区块的剩余的单位像素加载第二类灰阶信号的步骤还包括：
    为像素区块中的各第一分组单元的的蓝色子像素分别加载所述第一类灰阶信号和所述第二类灰阶信号，所述第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素。
  10. 根据权利要求6所述的像素驱动方法，其中，所述单位像素包括红色子像素、绿色子像素和蓝色子像素，所述像素驱动方法还包括步骤：
    若判定像素区块的像素信号不满足第一条件，则为所述像素区块中的各所述第一分组单元的两个相邻同色子像素分别加载所述第一类灰阶信号和所述第二类灰阶信号。
  11. 根据权利要求1所述的像素驱动方法，其中，在所述获取像素区块中各单位像素的像素信号的步骤之前还包括：
    向像素区块的第一分组单元中的单位像素分别加载一组初始高灰阶信号和初始低灰阶信号，所述第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素。
  12. 一种像素驱动装置，包括：
    像素信号获取电路，用于获取像素区块中各单位像素的像素信号；
    颗粒感判断电路，用于根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否满足第一条件，所述第一条件用于表征所述像素区块显示时有颗粒感；
    驱动信号加载电路，用于在判定所述像素区块的像素信号满足所述第一条件时，按照预设规则向所述像素区块的一部分单位像素加载第一类灰阶信号，并向所述像素区块的剩余的单位像素加载第二类灰阶信号，其中，所述第一类灰阶信号与对应的所述第二类灰阶信号不相等。
  13. 一种计算机设备，包括存储器及一个或多个处理器，所述存储器中储存有计算机可读指令，所述计算机可读指令被所述一个或多个处理器执行时，使得所述一个或多个处理器执行以下步骤：
    获取像素区块中各单位像素的像素信号；
    根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否 满足第一条件，所述第一条件用于表征所述像素区块显示时有颗粒感；
    若判定所述像素区块的像素信号满足所述第一条件，则按照预设规则向所述像素区块的一部分单位像素加载第一类灰阶信号，并向所述像素区块的剩余的单位像素加载第二类灰阶信号，其中，所述第一类灰阶信号与对应的所述第二类灰阶信号不相等。
  14. 根据权利要求13所述的计算机设备，其中，所述信号判断区间包括第一类区间和第二类区间，根据各所述单位像素的像素信号和信号判断区间，判断所述像素区块的像素信号是否满足第一条件的步骤包括：
    获得所述像素区块中各第一分组单元的第二平均像素信号，所述第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
    获得所述第二平均像素信号位于各所述信号判断区间的第一比例参数；
    获得不小于对应的比例规范值的第一比例参数，所述对应的比例规范值用于衡量各所述第一比例参数是否符合相应信号判断区间的规范比例要求；
    若满足规范比例要求的最大第一比例参数对应的信号判断区间为第一类区间，则判定所述像素区块的像素信号满足第一条件；
    若满足规范比例要求的最大第一比例参数为第二类区间，则判定所述像素区块的像素信号不满足第一条件。
  15. 根据权利要求1所述的计算机设备，其中，所述处理器执行所述计算机可读指令时还执行以下步骤：
    获得所述单位像素的像素信号位于各所述信号判断区间的第二比例参数；
    获得不小于对应的比例规范值的第二比例参数，所述对应的比例规范值用于衡量各所述第一比例参数是否符合相应信号判断区间的规范比例要求；
    若满足规范比例要求的最大第二比例参数为第一类区间，则判定所述像素区块的像素信号满足第一条件；
    若满足规范比例要求的最大第二比例参数为第二类区间，则判定所述像素区块的像素信号不满足第一条件。
  16. 根据权利要求13所述的计算机设备，其中，所述处理器执行所述计算机可读指令时还执行以下步骤：
    若判定所述像素区块的像素信号满足第一条件，则获取所述像素区块中各第二分组单元的平均像素信号，所述第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
    查表获得各所述第二分组单元的平均像素信号对应的所述第一类灰阶信号和所述第二类灰阶信号。
  17. 根据权利要求15所述的计算机设备，其中，所述处理器执行所述计算机可读指令时还执行以下步骤：
    若判定所述像素区块的像素信号满足第一条件，则获取所述像素区块中各第二分组单元的平均像素信号，所述第二分组单元包括四个相邻单位像素，且各第一分组单元中无相同的单位像素；
    查表获得各所述第二分组单元的平均像素信号对应的所述第一类灰阶信号和所述第二类灰阶信号。
  18. 根据权利要求1所述的计算机设备，其中，所述处理器执行所述计算机可读指令时还执行以下步骤：
    若判定所述像素区块的像素信号不满足第一条件，则获取所述像素区块中各所述第一分组单元的平均像素信号，所述第一分组单元包括两个相邻的单位像素，且各第一分组单元中无相同的单位像素；
    查表获得各所述第一分组单元的平均像素信号对应的所述第一类灰阶信号和所述第 二类灰阶信号。
  19. 根据权利要求16所述的计算机设备，其中，所述处理器执行所述计算机可读指令时还执行以下步骤：
    若判定像素区块的像素信号满足第一条件，则为各所述第二分组单元中的三个红色子像素加载所述第一类灰阶信号，为剩余的一个红色子像素加载所述第二类灰阶信号。
  20. 根据权利要求19所述的计算机设备，其中，所述处理器执行所述计算机可读指令时还执行以下步骤：
    若判定像素区块的像素信号满足第一条件，则为各第二分组单元中的三个绿色子像素加载所述第一类灰阶信号，为剩余的一个绿色子像素加载所述第二类灰阶信号。
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