WO2022236854A1 - 显示面板的驱动方法、显示面板及液晶显示装置 - Google Patents

显示面板的驱动方法、显示面板及液晶显示装置 Download PDF

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Publication number
WO2022236854A1
WO2022236854A1 PCT/CN2021/094484 CN2021094484W WO2022236854A1 WO 2022236854 A1 WO2022236854 A1 WO 2022236854A1 CN 2021094484 W CN2021094484 W CN 2021094484W WO 2022236854 A1 WO2022236854 A1 WO 2022236854A1
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Prior art keywords
sub
grayscale
pixels
display panel
state
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PCT/CN2021/094484
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English (en)
French (fr)
Inventor
何振伟
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深圳市华星光电半导体显示技术有限公司
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Priority to US17/432,015 priority Critical patent/US20240021134A1/en
Publication of WO2022236854A1 publication Critical patent/WO2022236854A1/zh

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Classifications

    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
    • G09G3/3637—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with intermediate tones displayed by domain size control
    • 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
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0435—Change or adaptation of the frame rate of the video stream

Definitions

  • the present application relates to the field of display technology, and in particular to a method for driving a display panel, a display panel, and a liquid crystal display device.
  • the display panel adopts the time-domain viewing angle compensation algorithm to effectively improve or remove the graininess of the display screen.
  • the grayscale state switching of each frame performed by the time-domain viewing angle compensation algorithm cannot achieve the ideal large-scale display.
  • the effect of improving the effect of character deviation if the number of frames for maintaining the grayscale state of each sub-pixel is prolonged in a scene where the refresh rate of the display panel is low, it will easily lead to a more obvious flickering phenomenon.
  • the grayscale state of all subpixels in one frame of the display panel, is high grayscale H; in the next frame of the display panel, the grayscale state of all subpixels is Low Grayscale L.
  • the grayscale state of all sub-pixels in one frame of the display panel, is low grayscale L; in the next frame of the display panel, the grayscale state of all subpixels is high grayscale H. Due to the long response time of the liquid crystal, it is not easy to distinguish whether the current gray-scale state is high gray-scale H or low gray-scale L due to the switching of the gray-scale state of each frame, resulting in weak or no improvement in the effect of large-scale viewing angle deviation.
  • the gray-scale state of all sub-pixels is always switched every two consecutive frames, which can be specifically two consecutive frames.
  • the grayscale state of all subpixels in is high grayscale H
  • the grayscale state of all subpixels in two consecutive frames adjacent to the two consecutive frames is low grayscale L
  • the grayscale state of all subpixels in two consecutive frames adjacent to the two consecutive frames is high Gray scale H.
  • This kind of situation is one of extending the number of frames to maintain the grayscale state of each sub-pixel. Since the grayscale state is switched every two consecutive frames, the frequency of brightness changes between frames is reduced, and it is also easy to appear more obvious. flicker phenomenon.
  • the grayscale state of some subpixels is a high grayscale H
  • the grayscale state of another part of subpixels is H.
  • the grayscale state is low grayscale L; in the second frame F2, the grayscale state of this part of sub-pixels is still high grayscale H, and the grayscale state of another part of subpixels is still low grayscale L; in the third frame In F3, the grayscale state of this part of subpixels is low grayscale L, and the grayscale state of another part of subpixels is high grayscale H; in the fourth frame F4, the grayscale state of this part of subpixels is still low grayscale L, the grayscale state of the other part of sub-pixels is still high grayscale H.
  • the spatial distribution of the gray-scale state is added, that is, in the same frame, the gray-scale state of some sub-pixels is low gray-scale L , and the grayscale state of another part of the sub-pixels is the high grayscale H.
  • the grayscale state of the same sub-pixel also maintains two consecutive frames.
  • This time-domain viewing angle compensation algorithm has no flicker at a high refresh rate, for example, above 100Hz Phenomenon, however, when the refresh rate is low, for example, below 100Hz, there is still a flicker phenomenon visible to the naked eye.
  • one of the reasons for flickering at such a low refresh rate is that the grayscale state of all sub-pixels is switched every two frames, and correspondingly, the brightness is changed every two frames, so , if the refresh frequency of the display panel is F, then the brightness change frequency corresponds to 2F, which reduces the brightness change frequency.
  • the present application provides a driving method of a display panel, a display panel and a liquid crystal display device, so as to alleviate the technical problem that flickering occurs easily when the refresh frequency of the display panel is low.
  • the present application provides a method for driving a display panel, which includes: initializing the grayscale state of the subpixels of the display panel, where the grayscale state includes high grayscale and low grayscale; dividing the subpixels of the display panel into N partition, wherein, N is a positive integer greater than or equal to 2; and driving the sub-pixels of the same partition to maintain the grayscale state in N consecutive frames, and switching the gray of the sub-pixels of one of the N partitions in the same frame step state.
  • the step of dividing the sub-pixels of the display panel into N partitions includes: dividing at least one pair of sub-pixels into a corresponding partition; configuring the grayscale state of one of the pair of subpixels to be a high grayscale , and the grayscale state of the other one of the pair of sub-pixels is a low grayscale.
  • the step of dividing the sub-pixels of the display panel into N partitions includes: dividing at least one pair of sub-pixels into a corresponding partition; and arranging sub-pixels of the same logarithm to different partitions.
  • the step of driving the sub-pixels in the same sub-region to maintain the gray-scale state in N consecutive frames, and switching the gray-scale state of the sub-pixels in one of the N sub-regions in the same frame includes: determining The refresh frequency of the display panel; based on the refresh frequency, determine the single frame time of the display panel; based on the brightness change interval of the display panel being a single frame time, determine the brightness change frequency of the display panel as the reciprocal of the single frame time.
  • the step of driving the sub-pixels of the same partition to maintain the gray-scale state in N consecutive frames, and switching the gray-scale state of the sub-pixels of one of the N partitions in the same frame further includes: Based on the brightness change amplitude and brightness change frequency of the display panel, a perceivable flicker standard is determined; based on the flicker standard, it is determined that the refresh frequency is greater than or equal to 48 Hz.
  • the step of initializing the grayscale state of the sub-pixels of the display panel includes: initializing the grayscale state of the sub-pixels to a corresponding high grayscale or low grayscale; configuring a gamma with a first correction coefficient less than 2.2 The point values in the curve correspond to high gray levels; the point values in the gamma curve with the second correction factor greater than or equal to 2.2 are configured to correspond to low gray levels.
  • the step of initializing the grayscale state of the sub-pixels of the display panel further includes: configuring an average value of the first correction coefficient and the second correction coefficient to be 2.2.
  • the driving method further includes: configuring N to be equal to 2, and the N partitions include the first partition and the second partition; driving the grayscale state of the sub-pixels in the first partition to maintain two consecutive frames, and performing the second The grayscale state of the sub-pixels in the two partitions is switched and maintained for two consecutive frames; wherein, the grayscale state is switched from high grayscale to low grayscale, or from low grayscale to high grayscale.
  • the present application provides a display panel, which includes an initialization module, a division module, and a driving module;
  • the initialization module is used to initialize the grayscale state of the sub-pixels of the display panel, and the grayscale state includes high grayscale and low grayscale;
  • the dividing module is used to divide the sub-pixels of the display panel into N partitions, wherein N is a positive integer greater than or equal to 2;
  • the driving module is used to drive the sub-pixels of the same partition to maintain the grayscale state in N consecutive frames, and at The grayscale state of the sub-pixels in one of the N partitions is switched in the same frame.
  • the present application provides a liquid crystal display device, which includes the display panel in any one of the above implementation manners.
  • the driving method of the display panel, the display panel and the liquid crystal display device provided by the present application by performing N partitions on the display panel, and maintaining N consecutive frames for the grayscale state of the sub-pixels in the same partition, and performing one partition in the same frame
  • the switching of the gray scale state of the sub-pixel can not only reduce the range of brightness change between adjacent frames, but also increase the frequency of brightness change, thereby reducing or avoiding the flickering phenomenon.
  • FIG. 1 is a schematic diagram of a first structure of a display panel provided by a conventional technical solution.
  • FIG. 2 is a schematic diagram of a second structure of a display panel provided by a conventional technical solution.
  • FIG. 3 is a schematic diagram of a third structure of a display panel provided by a conventional technical solution.
  • FIG. 4 is a schematic diagram of a fourth structure of a display panel provided by a conventional technical solution.
  • FIG. 5 is a schematic diagram of a brightness variation curve of the display panel in FIG. 3 or FIG. 4 .
  • FIG. 6 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • FIG. 7 is another schematic structural diagram of a display panel provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a brightness change curve of the display panel in FIG. 6 or FIG. 7 .
  • FIG. 9 is a schematic flowchart of a method for driving a display panel provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a fifth structure of a display panel provided by an embodiment of the present application.
  • the present embodiment provides a display panel, the display panel includes sub-pixels of N partitions, the grayscale state of each sub-pixel includes high grayscale H and low grayscale L; The grayscale state of the sub-pixel is maintained for N consecutive frames, and the grayscale state of the sub-pixel in a partition is switched in the same frame; wherein, N is a positive integer greater than or equal to 2.
  • N partitions are performed on the display panel, and the grayscale state of the sub-pixels in the same partition is maintained for N consecutive frames, and the sub-pixels in one partition are adjusted in the same frame.
  • Gray scale state switching can not only reduce the brightness change range between adjacent frames, but also increase the brightness change frequency, thereby reducing or avoiding the flickering phenomenon.
  • the high grayscale H can be defined as the first correction coefficient of the corresponding gamma curve is less than 2.2; the low grayscale L can be defined as the first correction coefficient of the corresponding gamma curve
  • the second correction factor is greater than or equal to 2.2.
  • the average value of the first correction factor and the second correction factor is 2.2.
  • the average value of the first correction coefficient and the second correction coefficient can be obtained by dividing the sum of the first correction coefficient and the second correction coefficient by 2.
  • a sub-region may include one or more pairs of sub-pixels, and each pair of sub-pixels may include two sub-pixels; the grayscale state of one of a pair of sub-pixels is high grayscale H, and one pair of sub-pixels The grayscale state of the other one of the sub-pixels is low grayscale L.
  • the number of sub-pixels with low grayscale L in the same partition is equal to the number of sub-pixels with high grayscale H, which can further reduce brightness variation
  • the amplitude is beneficial to further reduce or eliminate the flicker phenomenon when the display frequency is low.
  • the number of sub-pixels in one of the partitions is equal to the number of sub-pixels in the other partition.
  • having the same number of sub-pixels in different partitions can further reduce the brightness variation range, which is beneficial to further reduce or eliminate the flicker phenomenon when the display frequency is low.
  • the refresh frequency of the display panel is equal to the brightness change frequency of the display panel.
  • the gray scale state of the sub-pixels in a partition is reversed every frame, therefore, the brightness of the display panel changes once every frame.
  • the brightness of the display panel changes every time one frame time passes, and therefore, the frequency of brightness change is the reciprocal of one frame time.
  • the reciprocal of the refresh frequency of the display panel is one frame time. Therefore, the refresh frequency of the display panel is equal to the brightness change frequency of the display panel.
  • the brightness change frequency of the display panel can be determined by the The refresh rate of the panel is determined.
  • the refresh rate of the display panel is greater than or equal to 48Hz.
  • this embodiment provides a display panel, the display panel includes sub-pixels of N partitions, and the grayscale state of each sub-pixel includes high grayscale H and low grayscale L; the subpixels in the same partition The grayscale state switching is performed every N consecutive frames, and the grayscale state of the sub-pixels in the N partitions is flipped after N-1 frames; wherein, N is a positive integer greater than or equal to 2.
  • N by performing N partitions on the display panel, and switching the grayscale state of the sub-pixels in the same partition every N consecutive frames, and after N-1 frames, N
  • the grayscale state of the sub-pixels in each sub-region is flipped, which can not only reduce the brightness change range between adjacent frames, but also increase the brightness change frequency, thereby reducing or avoiding the flickering phenomenon.
  • the sub-pixels in the same partition switch the gray-scale state every interval of N consecutive frames, which can be characterized as maintaining the gray-scale state of the sub-pixels in the same partition for N consecutive frames.
  • the completion of the flipping of the gray-scale states of the sub-pixels in the N partitions after the N-1 frame can also be represented as the switching of the gray-scale states of the sub-pixels in a partition in the same frame.
  • the display area of the display panel can be divided into a first subregion G1 and a second subregion G2, wherein the first subregion G1 is The area enclosed by the dotted line, the second subregion G2 is the area enclosed by the solid line.
  • the display panel may include a first row of sub-pixels, a second row of sub-pixels, a third row of sub-pixels, and a fourth row of sub-pixels arranged in sequence from top to bottom, and a first row of sub-pixels, a second row of sub-pixels arranged in sequence from left to right A column of sub-pixels, a third column of sub-pixels, and a fourth column of sub-pixels.
  • the first sub-region G1 may include sub-pixels in the first row and first column, sub-pixels in the first row and second column, sub-pixels in the second row and first column, sub-pixels in the second row and second column, and sub-pixels in the third row and second column. Sub-pixels in three columns, sub-pixels in third row and fourth column, sub-pixels in fourth row and third column, and sub-pixels in fourth row and fourth column.
  • the second sub-region G2 may include sub-pixels in the first row and third column, sub-pixels in the first row and fourth column, sub-pixels in the second row and third column, sub-pixels in the second row and fourth column, and sub-pixels in the third row and fourth column. The sub-pixels in the first column, the sub-pixels in the third row and the second column, the sub-pixels in the fourth row and the first column, and the sub-pixels in the fourth row and the second column.
  • the grayscale state of the subpixels in the first row and the first column is a high grayscale H
  • the grayscale state of the subpixels in the first row and the second column is a low grayscale L
  • the grayscale state of the subpixels in the second row and the first column is low grayscale L
  • the grayscale state of the subpixels in the second row and the second column is high grayscale H
  • the grayscale state of the subpixels in the third row and the third column is The state is high grayscale H
  • the grayscale state of the subpixels in the third row and fourth column is low grayscale L
  • the grayscale state of the subpixels in the fourth row and third column is low grayscale L
  • the grayscale state of the subpixels in the fourth row and third column is low grayscale L.
  • the grayscale state of the sub-pixels in the four columns is high grayscale H.
  • the grayscale state of the subpixels in the first row and third column is high grayscale H
  • the grayscale state of the subpixels in the first row and fourth column is low grayscale L
  • the grayscale state of the subpixels in the second row and third column is low grayscale L
  • the grayscale state of the subpixels in the second row and fourth column is high grayscale H
  • the grayscale state of the subpixels in the third row and first column is The state is high grayscale H
  • the grayscale state of the subpixel in the third row and the second column is low grayscale L
  • the grayscale state of the subpixel in the fourth row and the first column is low grayscale L
  • the grayscale state of the subpixel in the fourth row and the The grayscale state of the sub-pixels in the two columns is high grayscale H.
  • the gray scale state of each sub-pixel in the first sub-region G1 remains unchanged.
  • the grayscale state of the sub-pixels in the first row and third column is switched to low grayscale L
  • the grayscale state of the sub-pixels in the first row and fourth column is switched to high grayscale H
  • the grayscale state of the subpixels in the second row and third column is switched to high grayscale H.
  • the grayscale state of the sub-pixels in the third column of the row is switched to high grayscale H
  • the grayscale state of the subpixels in the second row and fourth column is switched to low grayscale L
  • the grayscale state of the subpixels in the third row and first column is The state is switched to low grayscale L
  • the grayscale state of the subpixels in the third row and second column is switched to high grayscale H
  • the grayscale state of the subpixels in the fourth row and first column is switched to high grayscale H
  • the grayscale state of the subpixels in the fourth row and first column is switched to high grayscale H
  • the grayscale state of the sub-pixels in the second column of the four rows is switched to the low grayscale L.
  • the grayscale state of the subpixels in the first row and first column is switched to low grayscale L
  • the grayscale state of the subpixels in the first row and second column is switched to high grayscale H
  • the grayscale state of the subpixels in the second row and the first column is switched to high grayscale H
  • the grayscale state of the subpixels in the second row and the second column is switched to low grayscale L
  • the subpixels in the third row and the third column The grayscale state of the pixel is switched to low grayscale L
  • the grayscale state of the subpixels in the third row and fourth column is switched to high grayscale H
  • the grayscale state of the subpixels in the fourth row and third column is switched to high grayscale H
  • the grayscale state of the sub-pixels in the fourth row and fourth column is switched to a low grayscale L.
  • the gray scale state of each sub-pixel in the second sub-region G2 remains unchanged.
  • the gray scale state of each sub-pixel in the first sub-region G1 remains unchanged.
  • the grayscale state of the sub-pixels in the first row and third column is switched to high grayscale H
  • the grayscale state of the sub-pixels in the first row and fourth column is switched to low grayscale L
  • the grayscale state of the subpixels in the second row is switched to low grayscale L.
  • the grayscale state of the sub-pixels in the third column of the row is switched to low grayscale L
  • the grayscale state of the subpixels in the second row and fourth column is switched to high grayscale H
  • the grayscale state of the subpixels in the third row and first column is The state is switched to high grayscale H
  • the grayscale state of the subpixels in the third row and second column is switched to low grayscale L
  • the grayscale state of the subpixels in the fourth row and first column is switched to low grayscale L
  • the grayscale state of the subpixels in the fourth row and first column is switched to low grayscale L
  • the grayscale state of the sub-pixels in the second column of the four rows is switched to the high grayscale H.
  • the grayscale state of each sub-pixel in the first sub-region G1 can be switched to the initial state through the corresponding switching between the high grayscale H and the low grayscale L, that is, HL switching; and in the first frame F1
  • the grayscale state of each subpixel in the first subregion G1 is maintained at the initial state corresponding to the first frame F1; in the third frame F3, the grayscale state of each subpixel in the first subregion G1 is switched to reverse State:
  • the grayscale state of each sub-pixel in the first sub-region G1 is maintained as the inversion state corresponding to the third frame F3.
  • the grayscale state of the subpixel in the initial state is high grayscale H
  • the grayscale state of the subpixel in the flipped state is low grayscale L
  • the grayscale state of the sub-pixel in the inverted state is high grayscale H.
  • the grayscale state of each sub-pixel in the first sub-region G1 is the initial state;
  • the gray-scale state of each sub-pixel in is in an inverted state.
  • the gray scale state of each sub-pixel in the first sub-region G1 is switched every other frame, and correspondingly, the gray-scale state of each sub-pixel in the first sub-region G1 is changed every other frame. Therefore, in the first sub-region G1
  • the brightness change of each sub-pixel is performed every two frames.
  • the grayscale state of each subpixel in the second subregion G2 is an initial state; in the second frame F2, the grayscale state of each subpixel in the second subregion G2 is an inverted state; In the third frame F3, the gray scale state of each sub-pixel in the second sub-region G2 is maintained in an inverted state; in the fourth frame F4, the gray-scale state of each sub-pixel in the second sub-region G2 is switched from the inverted state to the initial state. Similarly, the grayscale state of each subpixel in the second subregion G2 is switched every other frame, and correspondingly, the grayscale state of each subpixel in the second subregion G2 is changed every other frame. Therefore, the second The brightness change of each sub-pixel in the sub-region G2 is performed every two frames.
  • the refresh frequency of the display panel is F
  • the time of each frame is 1/F
  • the time of two frames is 2/F
  • the brightness change frequency of each sub-pixel in the first partition G1 can be defined is 2F
  • the brightness change frequency of each sub-pixel in the second sub-region G2 is 2F, where 2F can be represented as twice the refresh frequency F.
  • the brightness of the panel will change correspondingly every frame, for example, the brightness corresponding to the first frame F1, the brightness corresponding to the second frame F2, the brightness corresponding to the third frame F3 and the brightness corresponding to the fourth frame F4 may be different from each other, Therefore, if it is assumed that the refresh frequency of the display panel is F, then the time of one frame is the reciprocal of the refresh frequency, then correspondingly, the brightness of the display panel will change every frame, and thus the brightness change frequency of the display panel can be defined as F.
  • the brightness change curve S2 significantly increases the brightness change frequency, which is beneficial to further reduce or eliminate the flicker phenomenon when the display frequency is low.
  • N may also be equal to 4, and correspondingly, the display area of the display panel may be divided into a first subregion, a second subregion, a third subregion and a fourth subregion.
  • the display panel may include a first row of sub-pixels, a second row of sub-pixels, a third row of sub-pixels, and a fourth row of sub-pixels arranged in sequence from top to bottom, and a first row of sub-pixels, a second row of sub-pixels arranged in sequence from left to right A column of sub-pixels, a third column of sub-pixels, and a fourth column of sub-pixels.
  • the first partition may include sub-pixels in the first row and first column, sub-pixels in the first row and second column, sub-pixels in the second row and first column, and sub-pixels in the second row and second column.
  • the second partition may include sub-pixels in the first row and third column, sub-pixels in the first row and fourth column, sub-pixels in the second row and third column, and sub-pixels in the second row and fourth column.
  • the third partition may include sub-pixels in the third row and first column, sub-pixels in the third row and second column, sub-pixels in the fourth row and first column, and sub-pixels in the fourth row and second column.
  • the fourth partition may include sub-pixels in the third row and third column, sub-pixels in the third row and fourth column, sub-pixels in the fourth row and third column, and sub-pixels in the fourth row and fourth column.
  • the grayscale state of the first subregion remains unchanged, the grayscale state of the second subregion remains unchanged, the grayscale state of the third subregion remains unchanged, and the grayscale state of the fourth subregion is switched.
  • the grayscale state of the first subregion remains unchanged, the grayscale state of the second subregion remains unchanged, the grayscale state of the third subregion is switched, and the grayscale state of the fourth subregion remains unchanged.
  • the grayscale state of the first subregion remains unchanged, the grayscale state of the second subregion is switched, the grayscale state of the third subregion remains unchanged, and the grayscale state of the fourth subregion remains unchanged.
  • the grayscale state of the first subregion is switched, the grayscale state of the second subregion remains unchanged, the grayscale state of the third subregion remains unchanged, and the grayscale state of the fourth subregion remains unchanged.
  • the grayscale state of the first subregion remains unchanged
  • the grayscale state of the second subregion remains unchanged
  • the grayscale state of the third subregion remains unchanged
  • the grayscale state of the fourth subregion is switched.
  • the sub-pixels in the same partition switch the gray-scale state every four consecutive frames, and the gray-scale state of the sub-pixels in the 4 partitions after 3 frames is flipped, that is, the gray-scale state of the sub-pixels in each partition The state is switched once, and only the grayscale state of the sub-pixel in one partition is switched in the same frame.
  • N may also be equal to any one of 3, 5, 6, 8, 9, and 10.
  • this embodiment provides a method for driving a display panel, which includes the following steps:
  • Step S10 Initialize the gray scale state of the sub-pixels of the display panel, the gray scale state includes high gray scale and low gray scale.
  • Step S20 dividing the sub-pixels of the display panel into N sub-regions, where N is a positive integer greater than or equal to 2.
  • step S30 driving the sub-pixels of the same sub-region to maintain the gray-scale state in N consecutive frames, and switching the gray-scale state of the sub-pixels of one of the N sub-regions in the same frame.
  • N partitions are performed on the display panel, and the grayscale state of the sub-pixels in the same partition is maintained for N consecutive frames, and one partition is performed in the same frame.
  • the switching of the gray scale state of the sub-pixel can not only reduce the range of brightness change between adjacent frames, but also increase the frequency of brightness change, thereby reducing or avoiding the flickering phenomenon.
  • the step of dividing the sub-pixels of the display panel into N partitions includes: dividing at least one pair of sub-pixels into a corresponding partition; configuring the grayscale state of one of the pair of sub-pixels to be a high grayscale , and the grayscale state of the other one of the pair of sub-pixels is a low grayscale.
  • the step of dividing the sub-pixels of the display panel into N partitions includes: dividing at least one pair of sub-pixels into a corresponding partition; and arranging sub-pixels with the same pair number to different partitions.
  • the step of driving the sub-pixels in the same sub-region to maintain the gray-scale state in N consecutive frames, and switching the gray-scale state of the sub-pixels in one of the N sub-regions in the same frame includes: determining The refresh frequency of the display panel; based on the refresh frequency, determine the single frame time of the display panel; based on the brightness change interval of the display panel being a single frame time, determine the brightness change frequency of the display panel as the reciprocal of the single frame time.
  • the step of driving the sub-pixels in the same partition to maintain the grayscale state in N consecutive frames, and switching the grayscale state of the sub-pixels in one of the N partitions in the same frame further includes: Based on the brightness change amplitude and brightness change frequency of the display panel, a perceivable flicker standard is determined; based on the flicker standard, it is determined that the refresh frequency is greater than or equal to 48 Hz.
  • the step of initializing the grayscale state of the sub-pixel of the display panel includes: initializing the grayscale state of the sub-pixel to a corresponding high grayscale or low grayscale; configuring the gamma with the first correction coefficient less than 2.2 The point values in the curve correspond to high gray levels; the point values in the gamma curve with the second correction factor greater than or equal to 2.2 are configured to correspond to low gray levels.
  • the step of initializing the grayscale state of the sub-pixels of the display panel further includes: configuring an average value of the first correction coefficient and the second correction coefficient to be 2.2.
  • the driving method further includes: configuring N to be equal to 2, and the N partitions include the first partition and the second partition; driving the grayscale state of the sub-pixels of the first partition to maintain for 2 consecutive frames, and performing the second The grayscale state of the sub-pixels in the two partitions is switched and maintained for two consecutive frames; wherein, the grayscale state is switched from high grayscale to low grayscale, or from low grayscale to high grayscale.
  • this embodiment provides a display panel, which includes an initialization module 10, a division module 20, and a driving module 30; the initialization module 10 is used to initialize the grayscale of the sub-pixels of the display panel state, the grayscale state includes high grayscale and low grayscale; the division module 20 is used to divide the sub-pixels of the display panel into N partitions, wherein N is a positive integer greater than or equal to 2; the drive module 30 is used to drive the same partition The sub-pixels of the sub-pixels maintain the gray-scale state in N consecutive frames, and switch the gray-scale state of the sub-pixels in one of the N sub-regions in the same frame.
  • N partitions are performed on the display panel, and the grayscale state of the sub-pixels in the same partition is maintained for N consecutive frames, and the sub-pixels in one partition are adjusted in the same frame.
  • Gray scale state switching can not only reduce the brightness change range between adjacent frames, but also increase the brightness change frequency, thereby reducing or avoiding the flickering phenomenon.
  • the initialization module 10 can be connected with the division module 20 , and the division module 20 can be connected with the driving module 30 .
  • this embodiment provides a liquid crystal display device, which includes the display panel in any one of the above embodiments.
  • the display panel is partitioned into N partitions, and the grayscale state of the sub-pixels in the same partition is maintained for N consecutive frames, and the sub-pixels in one partition are divided in the same frame.
  • the switching of the grayscale state can not only reduce the brightness change range between adjacent frames, but also increase the brightness change frequency, thereby reducing or avoiding the flickering phenomenon.

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Abstract

本申请公开了一种显示面板的驱动方法、显示面板及液晶显示装置，显示面板包括N个分区的子像素，每个子像素的灰阶状态包括高灰阶和低灰阶，同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率。

Description

显示面板的驱动方法、显示面板及液晶显示装置 技术领域
本申请涉及显示技术领域，具体涉及一种显示面板的驱动方法、显示面板及液晶显示装置。
 背景技术
显示面板采用时域视角补偿算法可以有效改善或者去除显示画面的颗粒感，当该显示面板中的液晶反应较慢时，时域视角补偿算法进行的每帧灰阶状态切换也无法实现理想的大视角色偏改善效果；若在显示面板的刷新频率较低的场景中延长每个子像素的灰阶状态的保持帧数，则容易导致出现较为明显的闪烁现象。
例如，如图1所示，在显示面板的其中一帧中，所有子像素的灰阶状态均为高灰阶H；在该显示面板的下一帧中，所有子像素的灰阶状态均为低灰阶L。或者，在显示面板的其中一帧中，所有子像素的灰阶状态均为低灰阶L；在该显示面板的下一帧中，所有子像素的灰阶状态均为高灰阶H。这种每帧灰阶状态切换由于液晶反应时间较久，不容易分出当前的灰阶状态是高灰阶H还是低灰阶L，导致大视角色偏的改善效果较弱或者无改善。
又例如，如图2所示，在其中一种时域视角补偿算法中，所有子像素的灰阶状态总是每两个连续帧发生一次灰阶状态切换，具体可以为在其中两个连续帧中所有子像素的灰阶状态均为高灰阶H，而在与该两个连续帧相邻的又两个连续帧中所有子像素的灰阶状态均为低灰阶L。或者，在其中两个连续帧中所有子像素的灰阶状态均为低灰阶L，而在与该两个连续帧相邻的又两个连续帧中所有子像素的灰阶状态均为高灰阶H。这种情况属于延长每个子像素的灰阶状态的保持帧数中的一种，由于每两个连续帧进行一次灰阶状态切换，拉低了帧间的亮度变化频率，同样容易出现较为明显的闪烁现象。
又例如，如图3和图4所示，在其中另一种时域视角补偿算法中，在第一帧F1中，一部分子像素的灰阶状态为高灰阶H，另一部分子像素的灰阶状态为低灰阶L；在第二帧F2中，该一部分子像素的灰阶状态仍然为高灰阶H，该另一部分子像素的灰阶状态仍然为低灰阶L；在第三帧F3中，该一部分子像素的灰阶状态为低灰阶L，该另一部分子像素的灰阶状态为高灰阶H；在第四帧F4中，该一部分子像素的灰阶状态仍然为低灰阶L，该另一部分子像素的灰阶状态仍然为高灰阶H。相较于前两种时域视角补偿算法，在本时域视角补偿算法中，加入了灰阶状态的空间分布情况，即在同一帧中，有一部分子像素的灰阶状态为低灰阶L，还有另一部分子像素的灰阶状态为高灰阶H。
在图3或者图4所示的时域视角补偿算法中，同一子像素的灰阶状态也保持了两个连续帧，这种时域视角补偿算法在高刷新频率，例如，100Hz以上时无闪烁现象，但是，在低刷新频率，例如，100Hz以下时，仍然存在肉眼可见的闪烁现象。
如图5所示的亮度变化曲线S1，这种低刷新频率存在闪烁的原因之一在于，每两帧切换一次所有子像素的灰阶状态，对应地，也是每两帧进行一次亮度变化，因此，若显示面板的刷新频率为F，则亮度变化频率对应为2F，这样降低了亮度变化频率。
需要注意的是，上述关于背景技术的介绍仅仅是为了便于清楚、完整地理解本申请的技术方案。因此，不能仅仅由于其出现在本申请的背景技术中，而认为上述所涉及到的技术方案为本领域所属技术人员所公知。
 技术问题
本申请提供一种显示面板的驱动方法、显示面板及液晶显示装置，以缓解显示面板的刷新频率较低时容易出现闪烁的技术问题。
 技术解决方案
第一方面，本申请提供一种显示面板的驱动方法，其包括：初始化显示面板的子像素的灰阶状态，灰阶状态包括高灰阶和低灰阶；划分显示面板的子像素为N个分区，其中，N为大于或者等于2的正整数；以及驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态。
在其中一些实施方式中，划分显示面板的子像素为N个分区的步骤，包括：划分至少一对子像素至对应的一个分区；配置一对子像素中的一个的灰阶状态为高灰阶，且一对子像素中的另一个的灰阶状态为低灰阶。
在其中一些实施方式中，划分显示面板的子像素为N个分区的步骤，包括：划分至少一对子像素至对应的一个分区；配置相同对数的子像素至不同分区。
在其中一些实施方式中，驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态的步骤，包括：确定显示面板的刷新频率；基于刷新频率，确定显示面板的单帧时间；基于显示面板的亮度变化间隔时间为单帧时间，确定显示面板的亮度变化频率为单帧时间的倒数。
在其中一些实施方式中，驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态的步骤，还包括：基于显示面板的亮度变化幅值和亮度变化频率，确定可感知的闪烁标准；基于闪烁标准，确定刷新频率大于或者等于48Hz。
在其中一些实施方式中，初始化显示面板的子像素的灰阶状态的步骤，包括：初始化子像素的灰阶状态为对应的高灰阶或者低灰阶；配置第一校正系数小于2.2的伽马曲线中的点值为对应的高灰阶；配置第二校正系数大于或者等于2.2的伽马曲线中的点值为对应的低灰阶。
在其中一些实施方式中，初始化显示面板的子像素的灰阶状态的步骤，还包括：配置第一校正系数与第二校正系数的平均值为2.2。
在其中一些实施方式中，驱动方法还包括：配置N等于2，N个分区包括第一分区和第二分区；驱动第一分区的子像素的灰阶状态保持2个连续帧后，并进行第二分区的子像素的灰阶状态切换且维持2个连续帧；其中，灰阶状态切换为高灰阶切换为低灰阶，或者低灰阶切换为高灰阶。
第二方面，本申请提供一种显示面板，其包括初始化模块、划分模块以及驱动模块；初始化模块用于初始化显示面板的子像素的灰阶状态，灰阶状态包括高灰阶和低灰阶；划分模块用于划分显示面板的子像素为N个分区，其中，N为大于或者等于2的正整数；驱动模块用于驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态。
第三方面，本申请提供一种液晶显示装置，其包括上述任一实施方式中的显示面板。
 有益效果
本申请提供的显示面板的驱动方法、显示面板及液晶显示装置，通过对显示面板进行N个分区，并对同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。
 附图说明
图1为传统技术方案提供的显示面板的第一种结构示意图。
图2为传统技术方案提供的显示面板的第二种结构示意图。
图3为传统技术方案提供的显示面板的第三种结构示意图。
图4为传统技术方案提供的显示面板的第四种结构示意图。
图5为图3或者图4中显示面板的亮度变化曲线的示意图。
图6为本申请实施例提供的显示面板的一种结构示意图。
图7为本申请实施例提供的显示面板的另一种结构示意图。
图8为图6或者图7中显示面板的亮度变化曲线的示意图。
图9为本申请实施例提供的显示面板的驱动方法的流程示意图。
图10为本申请实施例提供的显示面板的第五种结构示意图。
 本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
请参阅图6至图10，本实施例提供了一种显示面板，该显示面板包括N个分区的子像素，每个子像素的灰阶状态包括高灰阶H和低灰阶L；同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换；其中，N为大于或者等于2的正整数。
可以理解的是，本实施例提供的显示面板，通过对显示面板进行N个分区，并对同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。
需要进行说明的是，在本实施例中，高灰阶H可以定义为其所对应的伽马曲线的第一校正系数小于2.2；低灰阶L可以定义为其所对应的伽马曲线的第二校正系数大于或者等于2.2。
在其中一个实施例中，第一校正系数与第二校正系数的平均值为2.2。
可以理解的是，第一校正系数与第二校正系数的两者之和，再除以2既可得到第一校正系数与第二校正系数的平均值。
在其中一个实施例中，一个分区可以包括一对或者多对子像素，每一对子像素可以包括两个子像素；一对子像素中的一个的灰阶状态为高灰阶H，且一对子像素中的另一个的灰阶状态为低灰阶L。
可以理解的是，在本实施例中，在某一时刻或者某一时段中，同一分区中低灰阶L的子像素的数量与高灰阶H的子像素的数量相等，可以进一步降低亮度变化幅度，有利于进一步减少或者消除显示频率较低时的闪烁现象。
在其中一个实施例中，其中一个分区中子像素的数量与其中另一个分区中子像素的数量相等。
可以理解的是，不同分区中具有相同数量的子像素，可以进一步降低亮度变化幅度，有利于进一步减少或者消除显示频率较低时的闪烁现象。
在其中一个实施例中，显示面板的刷新频率与显示面板的亮度变化频率相等。
需要进行说明的是，在本申请提供的实施例中，每一帧翻转一个分区中子像素的灰阶状态，因此，显示面板的亮度每帧改变一次。换句话说，每过一帧时间，显示面板进行一次亮度变化，因此，亮度变化频率即为一帧时间的倒数。而显示面板的刷新频率的倒数即为一帧时间，因此，显示面板的刷新频率等于显示面板的亮度变化频率，换句话说，本申请提供的实施例中，显示面板的亮度变化频率可以由显示面板的刷新频率确定。
在其中一个实施例中，显示面板的刷新频率大于或者等于48Hz。
需要进行说明的是，一般而言，在进行灰阶状态切换时，若存在亮度变化幅值较大的情况，例如，所有子像素均进行灰阶状态切换的情况容易导致亮度变化幅值较大的状况，此时，显示面板的刷新频率在小于或者等于50Hz时，人眼可以较为容易地感知到闪烁。因此，在本申请提供的实施例中，同一帧仅进行一个分区中子像素的灰阶状态切换，每一次灰阶状态切换对应的亮度变化幅值较小，即使在更低的刷新频率下，人眼也不容易感知到闪烁。基于此，可以理解的是，一些实施例提供的显示面板即使在刷新频率低至48Hz时，仍然不容易产生闪烁感。
在其中一个实施例中，本实施例提供一种显示面板，显示面板包括N个分区的子像素，每个子像素的灰阶状态包括高灰阶H和低灰阶L；同一分区中的子像素每间隔N个连续帧进行一次灰阶状态切换，且N-1帧后N个分区中子像素的灰阶状态完成翻转；其中，N为大于或者等于2的正整数。
可以理解的是，本实施例提供的显示面板，通过对显示面板进行N个分区，并对同一分区中的子像素每间隔N个连续帧进行一次灰阶状态切换，且N-1帧后N个分区中子像素的灰阶状态完成翻转，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。
需要进行说明的是，同一分区中的子像素每间隔N个连续帧进行一次灰阶状态切换可以表征为同一分区中子像素的灰阶状态保持N个连续帧。同样，N-1帧后N个分区中子像素的灰阶状态完成翻转也可以表征为同一帧中进行一个分区中子像素的灰阶状态切换。
基于上述，如图6和图7所示，在其中一个实施例中，当N等于2时，显示面板的显示区可以分为第一分区G1和第二分区G2，其中，第一分区G1为虚线所围成的区域，第二分区G2为实线所围成的区域。该显示面板可以包括从上至下依次排列的第一行子像素、第二行子像素、第三行子像素以及第四行子像素和从左至右依次排列的第一列子像素、第二列子像素、第三列子像素以及第四列子像素。
第一分区G1可以包括第一行第一列的子像素、第一行第二列的子像素、第二行第一列的子像素、第二行第二列的子像素、第三行第三列的子像素、第三行第四列的子像素、第四行第三列的子像素以及第四行第四列的子像素。第二分区G2可以包括第一行第三列的子像素、第一行第四列的子像素、第二行第三列的子像素、第二行第四列的子像素、第三行第一列的子像素、第三行第二列的子像素、第四行第一列的子像素以及第四行第二列的子像素。
在第一帧F1及第一分区G1中，第一行第一列的子像素的灰阶状态为高灰阶H，第一行第二列的子像素的灰阶状态为低灰阶L，第二行第一列的子像素的灰阶状态为低灰阶L，第二行第二列的子像素的灰阶状态为高灰阶H，第三行第三列的子像素的灰阶状态为高灰阶H，第三行第四列的子像素的灰阶状态为低灰阶L，第四行第三列的子像素的灰阶状态为低灰阶L，以及第四行第四列的子像素的灰阶状态为高灰阶H。在第一帧F1及第二分区G2中，第一行第三列的子像素的灰阶状态为高灰阶H，第一行第四列的子像素的灰阶状态为低灰阶L，第二行第三列的子像素的灰阶状态为低灰阶L，第二行第四列的子像素的灰阶状态为高灰阶H，第三行第一列的子像素的灰阶状态为高灰阶H，第三行第二列的子像素的灰阶状态为低灰阶L，第四行第一列的子像素的灰阶状态为低灰阶L，以及第四行第二列的子像素的灰阶状态为高灰阶H。
在第二帧F2中，第一分区G1中各子像素的灰阶状态保持不变。但是在第二分区G2中，第一行第三列的子像素的灰阶状态切换为低灰阶L，第一行第四列的子像素的灰阶状态切换为高灰阶H，第二行第三列的子像素的灰阶状态切换为高灰阶H，第二行第四列的子像素的灰阶状态切换为低灰阶L，第三行第一列的子像素的灰阶状态切换为低灰阶L，第三行第二列的子像素的灰阶状态切换为高灰阶H，第四行第一列的子像素的灰阶状态切换为高灰阶H，以及第四行第二列的子像素的灰阶状态切换为低灰阶L。
在第三帧F3及第一分区G1中，第一行第一列的子像素的灰阶状态切换为低灰阶L，第一行第二列的子像素的灰阶状态切换为高灰阶H，第二行第一列的子像素的灰阶状态切换为高灰阶H，第二行第二列的子像素的灰阶状态切换为低灰阶L，第三行第三列的子像素的灰阶状态切换为低灰阶L，第三行第四列的子像素的灰阶状态切换为高灰阶H，第四行第三列的子像素的灰阶状态切换为高灰阶H，以及第四行第四列的子像素的灰阶状态切换为低灰阶L。但是第二分区G2中各子像素的灰阶状态保持不变。
在第四帧F4，第一分区G1中各子像素的灰阶状态保持不变。但是在第二分区G2中，第一行第三列的子像素的灰阶状态切换为高灰阶H，第一行第四列的子像素的灰阶状态切换为低灰阶L，第二行第三列的子像素的灰阶状态切换为低灰阶L，第二行第四列的子像素的灰阶状态切换为高灰阶H，第三行第一列的子像素的灰阶状态切换为高灰阶H，第三行第二列的子像素的灰阶状态切换为低灰阶L，第四行第一列的子像素的灰阶状态切换为低灰阶L，以及第四行第二列的子像素的灰阶状态切换为高灰阶H。
如图7所示，在第一帧F1中，通过高灰阶H与低灰阶L的对应切换即HL切换可以切换第一分区G1中各子像素的灰阶状态至初始状态；并在第二帧F2中，第一分区G1中各子像素的灰阶状态维持在第一帧F1对应的初始状态；在第三帧F3中，切换第一分区G1中各子像素的灰阶状态至翻转状态；在第四帧F4中，维持第一分区G1中各子像素的灰阶状态为第三帧F3对应的翻转状态。其中，处于初始状态的子像素的灰阶状态若为高灰阶H，则处于翻转状态的该子像素的灰阶状态为低灰阶L；或者，处于初始状态的子像素的灰阶状态若为低灰阶L，则处于翻转状态的该子像素的灰阶状态为高灰阶H。
可以理解的是，在第一帧F1和第二帧F2中，第一分区G1中各子像素的灰阶状态均为初始状态，在第三帧F3和第四帧F4中，第一分区G1中各子像素的灰阶状态均为翻转状态。第一分区G1中各子像素的灰阶状态每隔一帧进行一次切换，对应地，第一分区G1中各子像素的灰阶状态每隔一帧进行一次变化，因此，第一分区G1中各子像素的亮度变化为每两帧进行一次。
在第一帧F1中，第二分区G2中各子像素的灰阶状态均为初始状态；在第二帧F2中，第二分区G2中各子像素的灰阶状态均为翻转状态；在第三帧F3中，第二分区G2中各子像素的灰阶状态均维持翻转状态；在第四帧F4中，切换第二分区G2中各子像素的灰阶状态由翻转状态至初始状态。同理，第二分区G2中各子像素的灰阶状态每隔一帧进行一次切换，对应地，第二分区G2中各子像素的灰阶状态每隔一帧进行一次变化，因此，第二分区G2中各子像素的亮度变化为每两帧进行一次。
基于上述，假设显示面板的刷新频率为F，则每帧的时间为1/F，那么两帧的时间即为2/F，则由此可以定义第一分区G1中各子像素的亮度变化频率为2F，同理，第二分区G2中各子像素的亮度变化频率为2F，其中，2F可以表征为刷新频率F的2倍。
如图8所示为图6或者图7的显示面板的亮度变化曲线S2，由于同一帧中，仅有第一分区G1或者第二分区G2中的子像素进行灰阶状态切换，因此，该显示面板的亮度每一帧均会产生对应变化，例如，第一帧F1对应的亮度、第二帧F2对应的亮度、第三帧F3对应的亮度以及第四帧F4对应的亮度可以互不相同，因此，若假设显示面板的刷新频率为F，则一帧的时间为刷新频率的倒数，那么对应地，显示面板的亮度每帧均会发生变化，则由此可以定义显示面板的亮度变化频率为F。
因此，相较于图5所示的亮度变化曲线S1，亮度变化曲线S2明显增加了亮度变化频率，有利于进一步减少或者消除显示频率较低时的闪烁现象。
同理可知，N还可以等于4，对应地，显示面板的显示区可以分为第一分区、第二分区、第三分区以及第四分区。该显示面板可以包括从上至下依次排列的第一行子像素、第二行子像素、第三行子像素以及第四行子像素和从左至右依次排列的第一列子像素、第二列子像素、第三列子像素以及第四列子像素。
第一分区可以包括第一行第一列的子像素、第一行第二列的子像素、第二行第一列的子像素以及第二行第二列的子像素。
第二分区可以包括第一行第三列的子像素、第一行第四列的子像素、第二行第三列的子像素以及第二行第四列的子像素。
第三分区可以包括第三行第一列的子像素、第三行第二列的子像素、第四行第一列的子像素以及第四行第二列的子像素。
第四分区可以包括第三行第三列的子像素、第三行第四列的子像素、第四行第三列的子像素以及第四行第四列的子像素。
在第一帧中，第一分区的灰阶状态保持不变，第二分区的灰阶状态保持不变，第三分区的灰阶状态保持不变，第四分区的灰阶状态进行切换。
在第二帧中，第一分区的灰阶状态保持不变，第二分区的灰阶状态保持不变，第三分区的灰阶状态进行切换，第四分区的灰阶状态保持不变。
在第三帧中，第一分区的灰阶状态保持不变，第二分区的灰阶状态进行切换，第三分区的灰阶状态保持不变，第四分区的灰阶状态保持不变。
在第四帧中，第一分区的灰阶状态进行切换，第二分区的灰阶状态保持不变，第三分区的灰阶状态保持不变，第四分区的灰阶状态保持不变。
在第五帧中，第一分区的灰阶状态保持不变，第二分区的灰阶状态保持不变，第三分区的灰阶状态保持不变，第四分区的灰阶状态进行切换。
依次类推，同一分区中的子像素每间隔四个连续帧进行一次灰阶状态切换，且3帧后4个分区中子像素的灰阶状态完成翻转，即每个分区中的子像素的灰阶状态均进行了一次切换，并且同一帧中仅切换一个分区中子像素的灰阶状态。
在其中一个实施例中，N还可以等于3、5、6、8、9、10中的任一个。
如图9所示，在其中一个实施例中，本实施例提供一种显示面板的驱动方法，其包括以下步骤：
步骤S10：初始化显示面板的子像素的灰阶状态，灰阶状态包括高灰阶和低灰阶。
步骤S20：划分显示面板的子像素为N个分区，其中，N为大于或者等于2的正整数。
以及步骤S30：驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态。
可以理解的是，本实施例提供的显示面板的驱动方法，通过对显示面板进行N个分区，并对同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。
在其中一个实施例中，划分显示面板的子像素为N个分区的步骤，包括：划分至少一对子像素至对应的一个分区；配置一对子像素中的一个的灰阶状态为高灰阶，且一对子像素中的另一个的灰阶状态为低灰阶。
在其中一个实施例中，划分显示面板的子像素为N个分区的步骤，包括：划分至少一对子像素至对应的一个分区；配置相同对数的子像素至不同分区。
在其中一个实施例中，驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态的步骤，包括：确定显示面板的刷新频率；基于刷新频率，确定显示面板的单帧时间；基于显示面板的亮度变化间隔时间为单帧时间，确定显示面板的亮度变化频率为单帧时间的倒数。
在其中一个实施例中，驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态的步骤，还包括：基于显示面板的亮度变化幅值和亮度变化频率，确定可感知的闪烁标准；基于闪烁标准，确定刷新频率大于或者等于48Hz。
在其中一个实施例中，初始化显示面板的子像素的灰阶状态的步骤，包括：初始化子像素的灰阶状态为对应的高灰阶或者低灰阶；配置第一校正系数小于2.2的伽马曲线中的点值为对应的高灰阶；配置第二校正系数大于或者等于2.2的伽马曲线中的点值为对应的低灰阶。
在其中一个实施例中，初始化显示面板的子像素的灰阶状态的步骤，还包括：配置第一校正系数与第二校正系数的平均值为2.2。
在其中一个实施例中，驱动方法还包括：配置N等于2，N个分区包括第一分区和第二分区；驱动第一分区的子像素的灰阶状态保持2个连续帧后，并进行第二分区的子像素的灰阶状态切换且维持2个连续帧；其中，灰阶状态切换为高灰阶切换为低灰阶，或者低灰阶切换为高灰阶。
如图10所示，在其中一个实施例中，本实施例提供一种显示面板，其包括初始化模块10、划分模块20以及驱动模块30；初始化模块10用于初始化显示面板的子像素的灰阶状态，灰阶状态包括高灰阶和低灰阶；划分模块20用于划分显示面板的子像素为N个分区，其中，N为大于或者等于2的正整数；驱动模块30用于驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换N个分区中的一个分区的子像素的灰阶状态。
可以理解的是，本实施例提供的显示面板，通过对显示面板进行N个分区，并对同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。
在其中一个实施例中，初始化模块10可以与划分模块20连接，划分模块20可以与驱动模块30连接。
在其中一个实施例中，本实施例提供一种液晶显示装置，其包括上述任一实施例中的显示面板。
可以理解的是，本实施例提供的液晶显示装置，通过对显示面板进行N个分区，并对同一分区中子像素的灰阶状态保持N个连续帧，且同一帧中进行一个分区中子像素的灰阶状态切换，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。或者通过对显示面板进行N个分区，并对同一分区中的子像素每间隔N个连续帧进行一次灰阶状态切换，且N-1帧后N个分区中子像素的灰阶状态完成翻转，既可以降低相邻帧之间的亮度变化幅度，又可以提高亮度变化频率，进而可以减少或者避免闪烁现象。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种显示面板的驱动方法，包括：
    初始化所述显示面板的子像素的灰阶状态，所述灰阶状态包括高灰阶和低灰阶；
    划分所述显示面板的子像素为N个分区，其中，N为大于或者等于2的正整数；以及
    驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换所述N个分区中的一个分区的子像素的灰阶状态。
  2. 根据权利要求1所述的驱动方法，其中，所述划分所述显示面板的子像素为N个分区的步骤，包括：
    划分至少一对子像素至对应的一个分区；
    配置所述一对子像素中的一个的灰阶状态为高灰阶，且所述一对子像素中的另一个的灰阶状态为低灰阶。
  3. 根据权利要求1所述的驱动方法，其中，所述划分所述显示面板的子像素为N个分区的步骤，包括：
    划分至少一对子像素至对应的一个分区；
    配置相同对数的子像素至不同分区。
  4. 根据权利要求1所述的驱动方法，其中，所述驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换所述N个分区中的一个分区的子像素的灰阶状态的步骤，包括：
    确定所述显示面板的刷新频率；
    基于所述刷新频率，确定所述显示面板的单帧时间；
    基于所述显示面板的亮度变化间隔时间为所述单帧时间，确定所述显示面板的亮度变化频率为所述单帧时间的倒数。
  5. 根据权利要求4所述的驱动方法，其中，所述驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换所述N个分区中的一个分区的子像素的灰阶状态的步骤，还包括：
    基于所述显示面板的亮度变化幅值和所述亮度变化频率，确定可感知的闪烁标准；
    基于所述闪烁标准，确定所述刷新频率大于或者等于48Hz。
  6. 根据权利要求1所述的驱动方法，其中，所述初始化所述显示面板的子像素的灰阶状态的步骤，包括：
    初始化所述子像素的灰阶状态为对应的高灰阶或者低灰阶；
    配置第一校正系数小于2.2的伽马曲线中的点值为对应的高灰阶；
    配置第二校正系数大于或者等于2.2的伽马曲线中的点值为对应的低灰阶。
  7. 根据权利要求6所述的驱动方法，其中，所述初始化所述显示面板的子像素的灰阶状态的步骤，还包括：
    配置所述第一校正系数与所述第二校正系数的平均值为2.2。
  8. 根据权利要求1所述的驱动方法，其中，所述驱动方法还包括：
    配置N等于2，所述N个分区包括第一分区和第二分区；
    驱动所述第一分区的子像素的灰阶状态保持2个连续帧后，并进行所述第二分区的子像素的灰阶状态切换且维持2个连续帧；
    其中，所述灰阶状态切换为所述高灰阶切换为所述低灰阶，或者所述低灰阶切换为所述高灰阶。
  9. 一种显示面板，包括：
    初始化模块，用于初始化所述显示面板的子像素的灰阶状态，所述灰阶状态包括高灰阶和低灰阶；
    划分模块，用于划分所述显示面板的子像素为N个分区，其中，N为大于或者等于2的正整数；以及
    驱动模块，用于驱动同一分区的子像素于N个连续帧中保持灰阶状态，且于同一帧中切换所述N个分区中的一个分区的子像素的灰阶状态。
  10. 根据权利要求9所述的显示面板，其中，划分至少一对子像素至对应的一个分区；配置所述一对子像素中的一个的灰阶状态为高灰阶，且所述一对子像素中的另一个的灰阶状态为低灰阶。
  11. 根据权利要求9所述的显示面板，其中，划分至少一对子像素至对应的一个分区；配置相同对数的子像素至不同分区。
  12. 根据权利要求9所述的显示面板，其中，确定所述显示面板的刷新频率；基于所述刷新频率，确定所述显示面板的单帧时间；基于所述显示面板的亮度变化间隔时间为所述单帧时间，确定所述显示面板的亮度变化频率为所述单帧时间的倒数。
  13. 根据权利要求12所述的显示面板，其中，基于所述显示面板的亮度变化幅值和所述亮度变化频率，确定可感知的闪烁标准；基于所述闪烁标准，确定所述刷新频率大于或者等于48Hz。
  14. 根据权利要求9所述的显示面板，其中，初始化所述子像素的灰阶状态为对应的高灰阶或者低灰阶；配置第一校正系数小于2.2的伽马曲线中的点值为对应的高灰阶；配置第二校正系数大于或者等于2.2的伽马曲线中的点值为对应的低灰阶。
  15. 根据权利要求14所述的显示面板，其中，配置所述第一校正系数与所述第二校正系数的平均值为2.2。
  16. 根据权利要求9所述的显示面板，其中，配置N等于2，所述N个分区包括第一分区和第二分区；驱动所述第一分区的子像素的灰阶状态保持2个连续帧后，并进行所述第二分区的子像素的灰阶状态切换且维持2个连续帧；其中，所述灰阶状态切换为所述高灰阶切换为所述低灰阶，或者所述低灰阶切换为所述高灰阶。
  17. 一种液晶显示装置，包括如权利要求9所述的显示面板。
  18. 根据权利要求17所述的液晶显示装置，其中，划分至少一对子像素至对应的一个分区；配置所述一对子像素中的一个的灰阶状态为高灰阶，且所述一对子像素中的另一个的灰阶状态为低灰阶。
  19. 根据权利要求17所述的液晶显示装置，其中，划分至少一对子像素至对应的一个分区；配置相同对数的子像素至不同分区。
  20. 根据权利要求17所述的液晶显示装置，其中，确定所述显示面板的刷新频率；基于所述刷新频率，确定所述显示面板的单帧时间；基于所述显示面板的亮度变化间隔时间为所述单帧时间，确定所述显示面板的亮度变化频率为所述单帧时间的倒数。
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