[go: up one dir, main page]

WO2022198367A1 - 用于液晶显示面板的驱动方法和非暂时性计算机存储介质 - Google Patents

用于液晶显示面板的驱动方法和非暂时性计算机存储介质 Download PDF

Info

Publication number
WO2022198367A1
WO2022198367A1 PCT/CN2021/082023 CN2021082023W WO2022198367A1 WO 2022198367 A1 WO2022198367 A1 WO 2022198367A1 CN 2021082023 W CN2021082023 W CN 2021082023W WO 2022198367 A1 WO2022198367 A1 WO 2022198367A1
Authority
WO
WIPO (PCT)
Prior art keywords
grayscale
frame
picture
grayscales
representative
Prior art date
Application number
PCT/CN2021/082023
Other languages
English (en)
French (fr)
Inventor
陈航宇
肖利军
张峻敏
李冰
江峰
冯蒙
帅孟超
向建民
白鋆
Original Assignee
京东方科技集团股份有限公司
武汉京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 武汉京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2021/082023 priority Critical patent/WO2022198367A1/zh
Priority to CN202180000545.0A priority patent/CN115398531B/zh
Priority to US17/764,635 priority patent/US12039948B2/en
Publication of WO2022198367A1 publication Critical patent/WO2022198367A1/zh

Links

Images

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
    • G09G3/34—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
    • 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
    • G09G3/3614—Control of polarity reversal in general
    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/0257—Reduction of after-image effects
    • 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
    • G09G2320/0693—Calibration of display systems
    • 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
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display 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
    • 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 disclosure relates to the field of display technology, and in particular, to a driving method for a liquid crystal display panel and a non-transitory computer storage medium.
  • the liquid crystal display device includes a liquid crystal display panel, and the liquid crystal display panel includes a plurality of sub-pixels arranged in an array.
  • the deflection of the liquid crystal molecules is controlled by controlling the driving voltage of each of the plurality of sub-pixels.
  • it is usually driven in an AC mode, that is, the driving voltage of each of the plurality of sub-pixels is reversed between positive and negative polarities.
  • the polarity of the driving voltage of the sub-pixel in the previous frame may be the same as the polarity in the next frame.
  • a driving method for a liquid crystal display panel including a plurality of sub-pixels arranged in an array and the display time of the liquid crystal display substrate is divided into a plurality of equal time lengths a plurality of predetermined time periods to display a plurality of odd-numbered frame pictures and a plurality of even-numbered frame pictures; in each of the plurality of predetermined time periods, the odd-numbered frame pictures and the even-numbered frame pictures are switched in turn, the odd-numbered frame pictures and the even-numbered frame pictures When switching sequentially, the driving voltages of the plurality of sub-pixels are reversed between positive and negative polarities; and the polarity of the driving voltage of each of the plurality of sub-pixels in a last frame of the predetermined period of time having the same polarity as in the first frame picture in the next predetermined period, the driving method further includes: other frame pictures other than the first frame picture in each of the plurality of predetermined periods, the The plurality of sub-
  • the duration of each frame of the odd-numbered frame and the even-numbered frame includes a gray-scale voltage input period and a picture holding period, and the last frame within the predetermined period
  • the first gray-scale table is switched to the second gray-scale table during the picture maintaining period.
  • the second gray-scale table is switched to the first gray-scale table within the picture retention period of the first frame of picture within the predetermined period.
  • switching the first grayscale table to the second grayscale table and switching the second grayscale table to the first grayscale table includes: judging whether it is in the first frame During the picture holding period of the picture, if so, switch the second grayscale table to the first grayscale table; and determine whether it is within the picture holding period of the last frame of the picture, if so, switch the first grayscale table.
  • the gray scale table is switched to the second gray scale table.
  • the clock signal is counted by a counter to determine whether it is within the picture retention period of the first frame picture or the last frame picture, so as to switch the first grayscale table to the second grayscale table.
  • switching the first grayscale table to the second grayscale table or switching the second grayscale table to the first grayscale table includes: step S200, counting clock signals; Step S202, judging whether the count value of the clock signal reaches the first predetermined value, if so, determine the picture retention period of the last frame picture and enter step S204, otherwise return to step S200; A grayscale table is switched to the second grayscale table, and the count is reset; step S206, counting the clock signal; step S208, judging whether the count value of the clock signal reaches a second predetermined value, if so, then It is determined that it is within the picture retention period of the first frame of picture and goes to step S210, otherwise, return to step S206; step S210, switch the second grayscale table to the first grayscale table, and return to step S200 to Continue to count the clock signal.
  • the driving method further includes acquiring multiple second gray levels in the second gray level table by using multiple first gray levels in the first gray level table, wherein acquiring the second gray level
  • the plurality of second grayscales in the grayscale table includes: determining a grayscale range including the plurality of first grayscales in the first grayscale table; Obtaining a plurality of first representative grayscales from a grayscale range of a plurality of first grayscales, wherein the plurality of first representative grayscales are arranged and covered in the first grayscale table in ascending order of grayscales the gray scale range of the plurality of first gray scales; using the luminance waveform test to determine the luminance of each of the plurality of first representative gray scales in other frame pictures other than the first frame picture; using luminance waveform test, determining the luminance of each of the plurality of first representative grayscales in the first frame picture; and decreasing the grayscale of each of the plurality of first representative grayscales until The brightness in the first frame picture obtained by the first representative grayscale value after the decrease,
  • the driving method further includes: using two adjacent second representative grayscales in terms of grayscale values, to perform an analysis of other than the plurality of first representative grayscales in the first grayscale table.
  • the first grayscale between the two adjacent second representative grayscales is subjected to interpolation processing to obtain the difference between the first grayscale and the two adjacent second representative grayscales other than the plurality of first representative grayscales.
  • the second grayscale corresponding to the first grayscale in between is stored, and the second representative grayscale and the second grayscale are stored in the second grayscale table.
  • linear interpolation is used to perform interpolation processing on the first grayscale between two adjacent second representative grayscales other than the plurality of first representative grayscales, to obtain two adjacent grayscales.
  • the second represents the second grayscale between the grayscales.
  • the brightness in the first frame picture obtained by the first representative grayscale and the brightness in the last frame picture obtained by corresponding one of the plurality of first representative grayscale values are determined as follows: The brightness difference between the brightnesses is the smallest: the first representative grayscale input to the plurality of sub-pixels in the last frame of the predetermined period is converted into the first frame of the next predetermined period. The plurality of sub-pixels input the same first representative grayscale; and the first representative grayscale input to the plurality of subpixels in the first frame of the next predetermined period of time is decremented , until the last frame of a predetermined period and the first frame of the next predetermined period have the smallest brightness waveform peaks.
  • the luminance waveform test is performed using a photoelectric sensor.
  • the liquid crystal display panel is driven in an interlaced scanning manner, wherein, to the odd-numbered lines in one of the continuous odd-numbered frame pictures and even-numbered frame pictures
  • the sub-pixels input gray scales, and obtain the gray scales of the even-numbered sub-pixels from the gray scales of adjacent odd-row sub-pixels located in the same column, and input the obtained even-row sub-pixels’ gray scales into the corresponding even-row sub-pixels, and input a grayscale to the even-row subpixels of the other one of the consecutive odd-numbered and even-numbered frames, and obtain the grayscale of the odd-row subpixels by the grayscales of adjacent even-row subpixels located in the same column and inputting the acquired gray scales of the sub-pixels in the odd-numbered rows into the sub-pixels in the corresponding odd-numbered rows.
  • the grayscales of the corresponding even-row subpixels are obtained by calculating the average value of the grayscales of the adjacent odd-row subpixels in the same column, and by calculating the average value of the grayscales of the adjacent even-row subpixels in the same column to obtain the grayscale of the corresponding odd-numbered sub-pixels.
  • the predetermined period is 28s.
  • a non-transitory computer storage medium having computer instructions stored thereon, and when the computer instructions are executed by a processor, the above-described driving method can be implemented.
  • FIG. 1 is a schematic diagram of the voltages of two adjacent rows of sub-pixels when a line afterimage occurs in a liquid crystal display panel in the related art
  • FIG. 2 is a schematic diagram of the voltages of two adjacent rows of sub-pixels when solving the line afterimage of the liquid crystal display panel in the related art
  • FIG. 3 is a schematic diagram of the voltages of two adjacent rows of sub-pixels when the liquid crystal display panel flickers in the related art
  • FIG. 4 is a flowchart of a driving method for a liquid crystal display panel according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of a method for obtaining a second grayscale table according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram illustrating a comparison between test results of a driving method for a liquid crystal display panel according to an embodiment of the present disclosure and test results of the related art.
  • the interlaced scan mode is a scan mode that is specially processed by a system on a chip (SOC).
  • SOC system on a chip
  • the liquid crystal display panel can only receive the grayscales required by the odd-numbered sub-pixels in the odd-numbered frames, while the even-numbered sub-pixels’ grayscales are determined by the SOC using the odd-numbered subpixels’ grayscales. , obtained by interpolation.
  • the even-numbered frame only the gray levels required by the sub-pixels in the even-numbered rows are received, and the gray-levels of the sub-pixels in the odd-numbered rows are obtained by the SOC through interpolation processing using the gray-scale levels of the sub-pixels in the even-numbered rows.
  • grayscale is input to the odd-numbered sub-pixels in one of the consecutive odd-numbered and even-numbered frames, and the even-numbered sub-pixels are obtained by adjacent odd-numbered row subpixels located in the same column the gray scale of the row sub-pixels and input the obtained gray scale of the even-numbered sub-pixels into the corresponding even-numbered row sub-pixels, and input the gray scale to the even-numbered sub-pixels of the other one of the consecutive odd-numbered and even-numbered frames, and,
  • the grayscales of the odd-row subpixels are acquired through adjacent even-row subpixels located in the same column, and the acquired grayscales of the odd-row subpixels are input to the corresponding odd-row subpixels.
  • the gray scale of the corresponding even-row sub-pixels can be obtained by calculating the average value of the gray scales of the adjacent odd-row sub-pixels in the same column, and by calculating the average value of the gray scales of the adjacent even-row sub-pixels in the same column. Get the grayscale of the corresponding odd row subpixels.
  • the oblique part represents the grayscale obtained by interpolation
  • the non-blackened part represents the received grayscale
  • the gray scales shown in odd frame 1 the gray scales of sub-pixels in A (eg, even) row can be obtained from the gray scales of sub-pixels in two adjacent rows (eg, odd rows) above and below it.
  • the average value of the sum of the gray levels of the sub-pixels in the adjacent upper and lower rows of the sub-pixels in row A can be calculated, and then the sign of the average value can be reversed to obtain the gray-scale value of the sub-pixels in the row A.
  • the grayscale of the sub-pixels of row A in odd frame 1 is -127
  • the grayscale of even frame 1 is +255
  • the grayscale of odd frame 2 is -127
  • the grayscale of even frame 2 is + 255
  • the grayscale of the sub-pixels in row B in odd-numbered frame 1 is +0
  • the gray-scale of even-numbered frame 1 is -127
  • the gray-scale of odd-numbered frame 2 is 0+
  • the gray-scale of even-numbered frame 2 is -127
  • the 28SPOL reversal function means that the electrode polarity (POL) signal is reversed once every 28S, that is, an exchange occurs every 28S in the way of polarity change, so that the DC bias at the junction of grayscale changes is reversed. That is, after the POL signal is inverted, the polarity of the driving voltage of the sub-pixel changes with time, for example, from +-+- to -+-+. As shown in Table 2 below, the inversion time point of 28S is reached after the even-numbered frame 1 finishes displaying. In the case of non-28SPOL inversion, before and after the inversion time point, the polarities of the driving voltages of the sub-pixels in the even-numbered frame 1 and the odd-numbered frame 2 are as shown in Table 1.
  • the polarity of the driving voltage of each sub-pixel in odd-numbered frame 2 is the same as the polarity of the driving voltage of each sub-pixel in even-numbered frame 1 .
  • the polarity of the sub-pixels in row A is positive + in the even frame 1
  • the polarity in the odd frame 2 is also positive +
  • the sub-pixel in row B is negative in the even frame 1
  • the polarity in the odd frame 2 is negative Sex is also negative -.
  • the gray-scale voltages of the sub-pixels in the upper and lower rows change.
  • the gray-scale voltage changes from +255 to +0
  • the gray-scale voltage changes from +255 to +0.
  • -255 becomes -0, that is, the sub-pixels in row A are at the junction of grayscale changes.
  • the part that should be charged with -127 gray scale voltage in odd frame 2 becomes +127 gray scale voltage, so the DC bias of the liquid crystal is reversed, which is different from the previous 28S.
  • the present disclosure provides a driving method for a liquid crystal display panel.
  • the liquid crystal display panel includes a plurality of sub-pixels arranged in an array, and the display time displayed by the liquid crystal display panel is divided into a plurality of predetermined time periods of equal duration, such as 28S, for display.
  • a plurality of odd-numbered frame pictures and a plurality of even-numbered frame pictures are displayed alternately in sequence.
  • a plurality of odd-numbered frame pictures and a plurality of even-numbered frame pictures are included.
  • the odd-numbered frame picture and the even-numbered frame picture are switched sequentially.
  • the driving method includes: for each sub-pixel, for other frame pictures other than the first frame picture in each of the plurality of predetermined time periods, adopting the first grayscale table corresponding to the brightness to be presented by the sub-pixel.
  • a grayscale is used for picture display; in the first frame of the picture in each of the plurality of predetermined time periods, the second grayscale corresponding to the brightness to be presented by the sub-pixel in the second grayscale table is used for picture display, so that the Under the same charging time, the brightness difference between the brightness obtained by the second grayscale when the first frame is displayed and the brightness obtained by the corresponding first grayscale when the frame other than the first frame is displayed is the smallest .
  • the first grayscale table includes a plurality of first grayscales, and the plurality of first grayscales correspond to a plurality of luminances to be presented by each sub-pixel;
  • the second grayscale table includes a plurality of second grayscales, and the plurality of second grayscales
  • the order corresponds to the number of intensities each sub-pixel is to present.
  • the second grayscale is smaller than the corresponding first grayscale.
  • FIG. 4 is a flowchart of a driving method for a liquid crystal display panel according to an embodiment of the present disclosure. The driving method for a liquid crystal display panel of the present disclosure will be described in detail below with reference to FIG. 4 .
  • step S100 in the first frame of picture, the second gray scale in the second gray scale table is used for picture display.
  • the first frame picture here refers to the first frame picture in each of a plurality of predetermined time periods.
  • step S102 other frame pictures other than the first frame picture are displayed using the first gray scale in the first gray scale table.
  • the other frame pictures here refers to other frame pictures other than the first frame picture in each of the plurality of predetermined time periods.
  • the flicker of the first frame picture caused by the 28S inversion can be reduced or even eliminated.
  • a smaller grayscale such as grayscale L123 is used when displaying the first frame
  • a larger grayscale L127 is used when displaying other frames, so that the same brightness can be displayed.
  • the second grayscale corresponding to the first grayscale in the first grayscale table and smaller than the first grayscale is used for display, and other frame pictures can be displayed.
  • the grayscale voltage represents, for example, the correspondence between the grayscales in the grayscale range of 0-255 and the corresponding grayscale voltages used for driving, that is, one grayscale corresponds to one driving voltage (grayscale voltage).
  • the duration of each frame of the odd-numbered and even-numbered pictures may include a gray-scale voltage input period and a picture holding period, and the last frame within a predetermined period of time will The first grayscale table is switched to the second grayscale table.
  • the gray-scale voltage input period of the last frame the gray-scale voltage is input to each sub-pixel in the liquid crystal display panel.
  • the picture maintaining period is entered.
  • the gray-scale voltage is no longer input to each sub-pixel.
  • the software can control the direction, and switch the first grayscale table referenced when inputting the grayscale voltage to the second grayscale table, so as to use the second grayscale table to control the grayscale voltage input of the next frame.
  • the grayscale voltage input is performed based on the second grayscale table. Since other frame pictures other than the first frame picture use the first gray scale table for gray scale input, the second gray scale table is switched to the first gray scale table during the picture retention period of the first frame picture.
  • the first grayscale table that is the same as the previous frame (the last frame) is used for grayscale input, flickering occurs in the first frame of the picture.
  • the first gray scale table is adjusted to obtain the second gray scale table, and the driving circuit of the liquid crystal display panel outputs the gray scale voltage based on the first gray scale table.
  • the first grayscale table stores grayscales and their one-to-one corresponding grayscale voltages. When the grayscale voltages are input to each sub-pixel, the grayscale input to each sub-pixel is controlled based on whether the display screen is an odd-numbered frame or an even-numbered frame the polarity of the voltage.
  • the front-end signal received by the logic board Tcon is "output grayscale 127", which passes through the first grayscale 127 in the first grayscale table and the second grayscale 123 in the second grayscale table.
  • the corresponding relationship of call the second grayscale 123 in the second grayscale table to display the brightness corresponding to the front-end signal "output grayscale 127". It is assumed here that the display brightness of the first grayscale 127 in the first grayscale table in other frame pictures is equal to the display brightness of the second grayscale 123 in the second grayscale table in the first frame picture. It can be seen from this that the second grayscale 123 in the second grayscale table corresponds to the front-end signal "output grayscale 127" in the first grayscale table.
  • the first grayscale table when switching the first grayscale table to the second grayscale table and switching the second grayscale table to the first grayscale table, including: judging whether it is within the picture retention period of the first frame of picture, if so. then switch the second gray scale table to the first gray scale table; and determine whether it is within the picture retention period of the last frame of the picture, if so, switch the first gray scale table to the second gray scale table. That is, when it is determined that it is within the picture retention period of the first frame of picture, the second grayscale table is switched to the first grayscale table, otherwise, the second grayscale table is kept in use.
  • the first grayscale table is switched to the second grayscale table, otherwise, the first grayscale table is kept using. Other frames after the first frame and between the last frames within the same predetermined period keep using the first grayscale table.
  • the timing method in which the timer counts the (valid) clock signal is used to determine whether it is within the picture retention period of the first frame of picture or the last frame of picture, thereby switching the first grayscale table to the second grayscale. or switch the second gray scale table to the first gray scale table.
  • one frame of the liquid crystal display panel includes 2160 rows of sub-pixels and 10 clock signals.
  • the 10 clock signals can be divided into 5 groups, and a group of two clock signals is used for one row of sub-pixels.
  • One of a set of two clock signals is an active (eg, high-level clock CLK) signal, and the other is an inactive (eg, low-level) clock signal.
  • the 5 groups of clock signals respectively control the adjacent 5 rows of sub-pixels.
  • the 10 clock signals Take the 10 clock signals as a unit, and count the first active high-level clock signal among them. When these 10 clock signals control the first 5 rows of sub-pixels, count the first active high-level clock signal as 1; when these 10 clock signals control the next 5 rows of sub-pixels, count the The first active high clock signal counts as 2, and so on.
  • the count is 434, it means that the transmission of valid data (gray-scale voltage) of the frame of picture is completed, and the blank (picture holding) period is entered.
  • the first grayscale table can be switched to the second grayscale table or the second grayscale table can be switched to the first grayscale table, and the data of the next frame of pictures can be The corresponding second grayscale table or first grayscale table will be called for grayscale output.
  • FIG. 5 is a flowchart of timing control according to an embodiment of the present disclosure. Referring to FIG. 5 , the switching of the gray scale table will be described in detail below.
  • the timing control can start from displaying one frame of picture. After one frame of picture starts, in step S200, the CLK signal is counted.
  • step S202 the count value of the CLK signal is judged, that is, it is judged whether the count value of the (valid) clock signal reaches a first predetermined value.
  • the count value does not reach the first predetermined value (for example, corresponding to 729120 high levels in the 28S inversion mode)
  • the count value reaches the first predetermined value, go to step S204.
  • step S204 the first grayscale table is switched to the second grayscale table, and the count is reset.
  • the second gray scale table is used. Resetting the count refers to clearing the previous count and restarting the next 28S count.
  • step S206 after the reset count starts, the CLK signal is counted.
  • step S208 the count value of the CLK signal is judged, that is, it is judged whether the count value of the (valid) clock signal reaches the second predetermined value.
  • the count value does not reach the second predetermined value (for example, corresponding to 434 high levels in the 28S inversion mode)
  • step S210 is entered.
  • step S210 the second grayscale table is switched to the first grayscale table, and the process returns to step S200 to continue counting the CLK signal.
  • the first grayscale table is used when displaying the next frame of picture.
  • the present disclosure is described by taking a frame of picture including 2160 lines of sub-pixels and 10 clock signals, the 10 clock signals are divided into 5 groups, and one high-level signal in the 5 groups is counted as an example, but the present disclosure is not limited to this.
  • the second grayscale table can be obtained through the first grayscale table.
  • the following describes how to obtain the second grayscale table through the first grayscale table.
  • the front-end signal received by the logic board Tcon is "output 127 gray scales", and then Tcon will look up the table in the first gray scale table, including the gray scales of R, G, and B. Then, the gray levels of the three colors in the first gray level table are reduced to obtain the second gray level table. Then, the output gray-scale voltage can be changed according to the output of the reduced second gray-scale table.
  • FIG. 6 is a flowchart of a method for obtaining a second gray scale table according to an embodiment of the present disclosure. The following describes the method for obtaining a second gray scale table in detail with reference to FIG. 6 .
  • step S300 a gray scale range including a plurality of first gray scales in the first gray scale table is determined.
  • the present disclosure takes the gray scale range L0 to L255 as an example for description, but the present disclosure is not limited thereto.
  • a plurality of first representative grayscales are acquired from a grayscale range including a plurality of first grayscales in the first grayscale table, wherein the plurality of first representative grayscales are located along the edges of the first grayscale table.
  • the gray scales are arranged in order from small to large and cover multiple value ranges of the first gray scale. For example, L32, L63, L127, L191, and L223 may be selected for the multiple first representative grayscales, which roughly cover the grayscale range of L0 to L255.
  • step S304 using the luminance waveform test, the luminance of each of the plurality of first representative grayscales in other frame pictures other than the first frame picture is determined.
  • step S306 using the luminance waveform test, the luminance of each of the plurality of first representative grayscales in the first frame is determined.
  • step S308 the gray scale of each of the plurality of first representative gray scales is decremented until the brightness in the first frame picture obtained by the decreased first representative gray scale is equal to the difference between the gray scales of the plurality of first representative gray scales
  • the luminance difference between the luminances of the last frame picture obtained by decreasing one of the values correspondingly is the smallest, and the first representative grayscale after the decrease is used as the corresponding second representative grayscale.
  • the brightness between the brightness in the first frame picture obtained by the first representative grayscale value and the brightness of the last frame picture obtained by corresponding one of the plurality of first representative grayscale values can be determined as follows: The difference is the smallest: the first representative grayscale is input to a plurality of sub-pixels in the last frame of a predetermined period, and the same first representative grayscale is input to a plurality of sub-pixels in the first frame of the next predetermined period; Then, the first representative grayscale of the plurality of sub-pixels input to the first frame of the next predetermined period is decremented until the last frame of a predetermined period and the first frame of the next predetermined period The luminance waveform has minimal spikes.
  • the brightness waveform test can be performed by using a photoelectric sensor (Photo Sensor).
  • the voltages corresponding to the first representative grayscales L32, L63, L127, L191 and L223 in the first grayscale table are decremented and applied to the last frame and the next frame respectively, until the last frame and the following
  • the brightness wavelength peak at the switching position of the first frame is the smallest.
  • the brightness waveform changes the smallest after L127 drops by 4 gray levels, and the brightness waveform changes the smallest after L63 decreases by 2 gray levels.
  • the linear difference value may be used to perform interpolation processing on the first grayscales other than the first representative grayscales to obtain the corresponding second grayscales.
  • the second representative grayscale and the second grayscale are stored to obtain the second grayscale table.
  • two adjacent second representative grayscales in terms of grayscale values two adjacent second representative grayscales other than the plurality of first representative grayscales in the first grayscale table Perform interpolation processing on the first grayscale between the multiple first representative grayscales to obtain a second grayscale corresponding to the first grayscale between two adjacent second representative grayscales other than the multiple first representative grayscales.
  • Two representative grayscales and a second grayscale are stored in the second grayscale table.
  • the interpolation processing may be linear interpolation processing, but the present disclosure is not limited thereto.
  • FIG. 7 is a schematic diagram illustrating a comparison between the test results of the driving method for a liquid crystal display panel according to the embodiment of the present disclosure and the test results of the related art.
  • the driving method of the present disclosure compared with the currently adopted 3-frame (Frame) method, effectively reduces the change in the instantaneous brightness of 28S, and at the same time does not cause abnormal display to the screen, and solves the problem of 28SPOL inversion. the flickering problem.
  • the present disclosure can solve the flicker problem caused by the inversion of 28 SPOL, thereby improving the display quality of the liquid crystal display panel.
  • a non-transitory computer storage medium on which computer instructions are stored, and when the computer instructions are executed by a processor, the above-mentioned driving method can be implemented, thereby solving the problem due to 28SPOL The problem of flicker caused by inversion is improved, thereby improving the display quality of the liquid crystal display panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种用于液晶显示面板的驱动方法和非暂时性计算机存储介质，驱动方法包括：在多个预定时段的每一个中的第一帧画面之外的其它帧画面，多个子像素采用第一灰阶表进行画面显示，其中第一灰阶表包括多个第一灰阶；在多个预定时段的每一个中的第一帧画面，采用第二灰阶表来进行画面显示，其中第二灰阶表包括多个第二灰阶。

Description

用于液晶显示面板的驱动方法和非暂时性计算机存储介质 技术领域
本公开涉及显示技术领域，尤其涉及一种用于液晶显示面板的驱动方法和非暂时性计算机存储介质。
背景技术
目前，液晶显示(Liquid Crystal Display,LCD)装置已在全球范围内广泛应用。液晶显示装置包括液晶显示面板，液晶显示面板包括呈阵列排布的多个子像素。通过控制多个子像素中每一个的驱动电压来控制液晶分子的偏转。为防止液晶分子极化，通常以交流方式驱动，即多个子像素中每一个的驱动电压在正极性和负极性之间进行反转。在某些控制方式下，可能会出现子像素的驱动电压在前一帧画面中的极性与后一帧画面中的极性相同。
发明内容
根据本公开的一个方面，提供了一种用于液晶显示面板的驱动方法，所述液晶显示面板包括呈阵列排布的多个子像素并且所述液晶显示基板的显示时间被划分为等时长的多个预定时段来显示多个奇数帧画面和多个偶数帧画面；在所述多个预定时段的每一个中，奇数帧画面和偶数帧画面依次切换，所述奇数帧画面和所述偶数帧画面依次切换时所述多个子像素的驱动电压在正极性和负极性之间进行反转；并且所述多个子像素中每一个的驱动电压在一个所述预定时段的最后一帧画面中的极性与其后一个所述预定时段的第一帧画面中的极性相同，所述驱动方法还包括：在所述多个预定时段的每一个中的第一帧画面之外的其它帧画面，所述多个子像素采用第一灰阶表进行画面显示，其中第一灰阶表包括多个第一灰阶；在所述多个预定时段的每一个中的第一帧画面，采用第二灰阶表来进行画面显示，其中所 述第二灰阶表包括多个第二灰阶，以使得在相同的充电时长下，在所述多个子像素中的每个子像素显示所述第一帧画面时通过所述第二灰阶表中的第二灰阶所得的亮度与在该子像素显示所述其它帧画面时通过所述第一灰阶表中相应的第一灰阶所得的亮度之间的亮度差最小，其中，所述第二灰阶小于所述相应的第一灰阶。
可选地，所述奇数帧画面和所述偶数帧画面中的每一帧画面的持续时段包括灰阶电压输入时段以及画面保持时段，并且在所述预定时段内的最后一帧画面的所述画面保持时段内将所述第一灰阶表切换为所述第二灰阶表。
可选地，在所述预定时段内的第一帧画面的画面保持时段内，将所述第二灰阶表切换为所述第一灰阶表。
可选地，将所述第一灰阶表切换为所述第二灰阶表和将所述第二灰阶表切换为所述第一灰阶表，包括：判断是否处于所述第一帧画面的画面保持时段内，如是则将所述第二灰阶表切换为所述第一灰阶表；以及判断是否处于所述最后一帧画面的画面保持时段内，如是则将所述第一灰阶表切换为所述第二灰阶表。
可选地，通过计数器对时钟信号进行计数，以判断是否处于所述第一帧画面或所述最后一帧画面的画面保持时段内，从而将所述第一灰阶表切换为所述第二灰阶表或将所述第二灰阶表切换为所述第一灰阶表。
可选地，将所述第一灰阶表切换为所述第二灰阶表或将所述第二灰阶表切换为所述第一灰阶表包括：步骤S200、对时钟信号进行计数；步骤S202、判断所述时钟信号的计数值是否达到第一预定值，如是则确定处于所述最后一帧画面的画面保持时段并进入步骤S204，如否则返回步骤S200；步骤S204、将所述第一灰阶表切换为所述第二灰阶表，并重置计数；步骤S206、对所述时钟信号进行计数；步骤S208、判断所述时钟信号的计数值是否达到第二预定值，如是则确定处于所述第一帧画面的画面保持时段内并进入步骤S210，如否则返回步骤S206；步骤S210、将所述第二灰阶表切换为所述第一灰阶表，并返回步骤S200以对所述时钟信号继续计数。
可选地，所述驱动方法还包括通过所述第一灰阶表中的多个第一灰阶获取所述第二灰阶表中的多个第二灰阶，其中，获取所述第二灰阶表中的多个第二灰阶包括：确定包括所述第一灰阶表中的所述多个第一灰阶的灰阶范围；从包括所述第一灰阶表中的所述多个第一灰阶的灰阶范围中获取多个第一代表灰阶，其中，所述多个第一代表灰阶在所述第一灰阶表中沿灰阶从小至大顺序排列并涵盖所述多个第一灰阶的灰阶范围；利用亮度波形测试，确定所述多个第一代表灰阶中的每一个在所述第一帧画面之外的其它帧画面中的亮度；利用亮度波形测试，确定所述多个第一代表灰阶中的每一个在所述第一帧画面中的亮度；以及将所述多个第一代表灰阶中的每一个的灰阶进行递减直至通过递减后的所述第一代表灰阶所得的所述第一帧画面中的亮度、与通过所述多个第一代表灰阶值中的相应进行递减的一个所得的最后一帧画面的亮度之间的亮度差最小，并将递减之后的第一代表灰阶作为相应的第二代表灰阶。
可选地，所述驱动方法还包括：利用在灰阶数值上两个相邻所述第二代表灰阶，对所述第一灰阶表中的所述多个第一代表灰阶之外的两个相邻所述第二代表灰阶之间的第一灰阶进行插值处理，以获取与所述多个第一代表灰阶之外的两个相邻所述第二代表灰阶之间的第一灰阶对应的第二灰阶，并将所述第二代表灰阶和所述第二灰阶存储在所述第二灰阶表中。
可选地，利用线性插值对所述多个第一代表灰阶之外的两个相邻所述第二代表灰阶之间的第一灰阶进行插值处理，来获取两个相邻所述第二代表灰阶之间的第二灰阶。
可选地，通过以下确定通过所述第一代表灰阶所得的所述第一帧画面中的亮度、与通过所述多个第一代表灰阶值中的相应一个所得的最后一帧画面的亮度之间的亮度差最小：向一个所述预定时段的最后一帧画面中的所述多个子像素输入的所述第一代表灰阶，将其后一个所述预定时段的第一帧画面中的所述多个子像素输入相同的所述第一代表灰阶；以及将输入至其后一个所述预定时段的第一帧画面中的所述多个子像素的所述第一代表灰阶进行递减，直至一个所述预定 时段的最后一帧画面与其后一个所述预定时段的第一帧画面的亮度波形尖峰最小。
可选地，利用光电传感器进行所述亮度波形测试。
可选地，在显示连续的奇数帧画面和偶数帧画面时，采用隔行扫描方式驱动所述液晶显示面板，其中，向在所述连续的奇数帧画面和偶数帧画面中的一者的奇数行子像素输入灰阶，并且，通过位于相同列的相邻奇数行子像素的灰阶获取偶数行子像素的灰阶并将所述获取的偶数行子像素的灰阶输入相应偶数行子像素，以及向在所述连续的奇数帧和偶数帧中的另一者的偶数行子像素输入灰阶，并且，通过位于相同列的相邻偶数行子像素的灰阶获取奇数行子像素的灰阶并将所述获取的奇数行子像素的灰阶输入相应奇数行子像素。
可选地，通过计算相同列的相邻奇数行子像素的灰阶的平均值来获取相应偶数行子像素的灰阶，并且通过计算相同列的相邻偶数行子像素的灰阶的平均值来获取相应奇数行子像素的灰阶。
可选地，所述预定时段为28s。
根据本公开的另一方面，提供了一种非暂时性计算机存储介质，其上存储有计算机指令，并且所述计算机指令由处理器执行时，可实现以上所述的驱动方法。
附图说明
图1为相关技术中液晶显示面板出现线残像时相邻两行子像素的电压示意图；
图2为相关技术中解决液晶显示面板的线残像时相邻两行子像素的电压示意图；
图3为相关技术中液晶显示面板出现闪烁时相邻两行子像素的电压示意图；
图4为根据本公开的实施例的用于液晶显示面板的驱动方法流程图；
图5为根据本公开的实施例的定时控制流程图；
图6为根据本公开的实施例的第二灰阶表获取方法流程图；以 及
图7为根据本公开的实施例的用于液晶显示面板的驱动方法测试结果与相关技术的测试结果的对比示意图。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
目前，液晶显示装置已在全球范围内广泛应用。在一些偏远地区，由于信号较差，会以隔行(interlace)扫描模式进行显示。在这种显示模式下，会导致液晶显示面板在灰阶变化部分产生残像。为解决该残像，会使用28SPOL(28秒(S)极性)反转功能。但该28SPOL反转会带来闪烁问题。以下分别对interlace扫描模式以及28SPOL反转的工作原理以及带来的相应问题进行说明。
隔行扫描模式是通过片上系统(System on a Chip，SOC)进行特殊处理的扫描模式。在该隔行扫描模式中，通过SOC特殊处理，可以使得液晶显示面板在奇数帧只接收奇数行子像素所需的灰阶，而偶数行子像素的灰阶由SOC利用奇数行子像素的灰阶，通过插值处理得到。相应地，在偶数帧只接收偶数行子像素所需的灰阶，而奇数行子像素的灰阶由SOC利用偶数行子像素的灰阶，通过插值处理得到。也就是说，采用SOC特殊处理，只需正常显示一帧画面的一半灰阶。即，在显示连续的奇数帧和偶数帧时，向在连续的奇数帧和偶数帧中的一者的奇数行子像素输入灰阶，并且，通过位于相同列的相邻奇数行子像素获取偶数行子像素的灰阶并将获取的偶数行子像素的灰阶输入相应偶数行子像素，以及向在连续的奇数帧和偶数帧中的另一者的偶数行子像素输入灰阶，并且，通过位于相同列的相邻偶数行子像素获取奇数行子像素的灰阶并将获取的奇数行子像素的灰阶输入相应奇数行子像素。并且，可以通过计算相同列的相邻奇数行子像素的灰阶的平均值来获取相应偶数行子像素的灰阶，并且通过计算相同列的相邻偶数行子像素的灰阶的平均值来获取相应奇数行子像素的灰阶。
如下表1所示，倾斜部分表示通过插值处理得到的灰阶，非加黑部 分表示接收的灰阶。
表1
Figure PCTCN2021082023-appb-000001
由表1可知，例如奇数帧1所示的灰阶，A(例如偶数)行子像素的灰阶可通过其上下相邻两行(例如奇数行)的子像素的灰阶得到。例如，可计算A行子像素的相邻上下两行子像素的灰阶和的平均值，然后对该平均值符号取反，作为A行子像素的灰阶。同时，由表1还可知，通过采用上述SOC特殊处理，导致A行子像素与B行子像素在奇数帧与偶数帧切换时充入非对称灰阶电压。参考表1和图1，A行子像素在奇数帧1的灰阶为-127，偶数帧1的灰阶为+255，奇数帧2的灰阶为-127，偶数帧2的灰阶为+255；B行子像素在奇数帧1的灰阶为+0，偶数帧1的灰阶为-127，奇数帧2的灰阶为0+，偶数帧2的灰阶为-127，这样使得A行子像素与B行子像素在偶数帧1切换为奇数帧2充入的灰阶电压不对称，从而产生直流偏置，导致灰阶变化交界处产生线残像。
28SPOL反转功能是指每过28S，电极极性(POL)信号进行一次反转，即每28S极性变化的方式发生一次交换，使灰阶变化交界处的直流偏置产生一个反转。即POL信号反转后，使子像素的驱动电压的极性随时间的变化例如由+-+-变为-+-+。如下表2所示，在偶数帧1完成显示之后到达28S的反转时间点。在非28SPOL反转情况下，在该反转时间点前后，偶数帧1和奇数帧2中各子像素的驱动电压的极性如表1所示。
表2
Figure PCTCN2021082023-appb-000002
在28SPOL反转情况下，在该反转时间点后，奇数帧2中的各子像素的驱动电压的极性与偶数帧1中的各子像素的驱动电压的极性相同。例如，A行子像素在偶数帧1的极性为正+，在奇数帧2的极性也为正+，B行子像素在偶数帧1的极性为负-，在奇数帧2的极性为也负-。
如图2所示，对于A行子像素来说，其上下两行子像素的灰阶电压发生变化，例如在奇数帧1灰阶电压从+255变为+0，奇数帧2灰阶电压从-255变为-0，即A行子像素处于灰阶变化交界处。对于灰阶变化交界处的A行子像素，在奇数帧2原本应充入-127灰阶电压的部分变为充入+127灰阶电压，因此液晶的直流偏置产生反转从而与前28S造成的直流偏置抵消，从而消除灰阶变化交界处的A行子像素产生的线残像。类似地，对于灰阶变化交界处的B行子像素来说，在偶数帧2原本应充入-127灰阶电压的部分变为充入+127灰阶电压，因此液晶的直流偏置产生反转从而与前28S造成的直流偏置抵消。
但是，28SPOL反转会使反转前后两帧的极性相同，这样使得反转后的第一帧画面的液晶分子充电率优于其他帧画面，会导致肉眼可见的闪烁。如图3中(a)所示，非28SPOL反转时，液晶分子的驱动电压的极性在奇数帧和偶数帧切换的同时均发生反转。如图3中(b)所示，在28SPOL反转后，液晶分子的驱动电压的极性在奇数帧和偶数帧切换前后保持不变。即，POL信号正常时，液晶分子在两个方向交替运动；POL信号反转后第一帧画面，液晶分子保持运动方向不变，因此这一帧画面的充电率会更好，从而导致显示画面闪烁。
为解决该显示画面闪烁问题，本公开提供了一种用于液晶显示面板的驱动方法。该液晶显示面板包括呈阵列排布的多个子像素，并且该液晶显示面板显示的显示时间被划分为等时长的多个预定时段，例如28S，来进行显示。在多个预定时段的每一个中，多个奇数帧画面和多个偶数帧画面依次交替显示，具体地，在多个预定时段的每一个中，包括多个奇数帧画面和多个偶数帧画面，并且奇数帧画面和偶数帧画面依次切换。奇数帧画面和偶数帧画面依次切换时，多个子像素中每一个的驱动电压在正极性和负极性之间进行反转。并且，在前一预定时段的最后一帧画面中的各子像素的驱动电压的极性与后一预定时段(紧随其后的预定时段)的第一帧 画面中的各子像素的驱动电压的极性相同。该驱动方法包括：对于每个子像素，在多个预定时段的每一个中的第一帧画面之外的其它帧画面，采用第一灰阶表中的与该子像素要呈现的亮度对应的第一灰阶进行画面显示；在多个预定时段的每一个中的第一帧画面，采用第二灰阶表中与该子像素要呈现的亮度对应的第二灰阶来进行画面显示，以使得在相同的充电时长下，在显示第一帧画面时通过第二灰阶所得的亮度与在显示第一帧画面之外的帧画面时通过相应第一灰阶所得的亮度之间的亮度差最小。其中，第一灰阶表包括多个第一灰阶，多个第一灰阶对应每个子像素要呈现的多个亮度；第二灰阶表包括多个第二灰阶，多个第二灰阶对应每个子像素要呈现的多个亮度。并且，在显示相同亮度(或亮度差最小)时，第二灰阶小于相应的第一灰阶。该驱动方法适用于上述28SPOL方式。
图4为根据本公开的实施例的用于液晶显示面板的驱动方法流程图，以下参考图4来对本公开的用于液晶显示面板的驱动方法进行详细说明。
在步骤S100中，在第一帧画面中，采用第二灰阶表中的第二灰阶进行画面显示。此处的第一帧画面指的是多个预定时段的每一个中的第一帧画面。
在步骤S102中，在第一帧画面之外的其他帧画面采用第一灰阶表中的第一灰阶进行画面显示。此处的其他帧画面指的是多个预定时段的每一个中的除了第一帧画面之外的其他帧画面。
在28SPOL反转方式下，由于当前预定时段中的第一帧画面中的各子像素的驱动电压的极性与前一预定时段中的最后一帧画面中的各子像素的驱动电压的极性相同，这使得对于相同灰阶第一帧画面中的子像素充电后的亮度大于其他帧画面中的子像素充电后的亮度，导致出现闪烁。例如，如果在显示第一帧画面时采用灰阶L127，则会使得第一帧画面相对于其他帧采用灰阶L127的亮度增加，出现闪烁。通过采用本公开的上述驱动方法，可以减弱甚至消除由于28S反转导致的第一帧画面闪烁。例如，在显示第一帧画面时采用较小的灰阶例如灰阶L123，在显示其他帧画面时采用较大的灰阶L127，可显示相同亮度。通过采用本公开的上述驱动方法，显示第一帧画面时采用与第一灰阶表中的第一灰阶对应的、小于第一灰阶的第二灰阶进行显示，可以显示与其他帧画面采用第一灰阶时相同 的亮度。灰阶电压表示例如灰阶范围0-255内的灰阶与相应用于驱动的灰阶电压的对应关系，即一个灰阶对应一个驱动电压(灰阶电压)。
在本公开中，奇数帧画面和偶数帧画面中的每一帧画面的持续时段可包括灰阶电压输入时段以及画面保持时段，并且在预定时段内的最后一帧画面的画面保持时段内将第一灰阶表切换为第二灰阶表。在最后一帧画面的灰阶电压输入时段，向液晶显示面板中的各子像素输入灰阶电压。在向各子像素完成灰阶电压输入后，进入画面保持时段。在该画面保持时段，不再向各子像素输入灰阶电压。此时可通过软件控制方向，将输入灰阶电压时参照的第一灰阶表切换位第二灰阶表，以利用第二灰阶表来控制下一帧画面的灰阶电压输入。
在显示最后一帧画面之后的下一帧(第一帧)画面时，在该第一帧画面的灰阶电压输入时段，由于已经将第一灰阶表切换为第二灰阶表，此时基于第二灰阶表来进行灰阶电压输入。由于在第一帧画面之外的其他帧画面采用第一灰阶表来进行灰阶输入，因此，第一帧画面的画面保持时段内，将第二灰阶表切换为第一灰阶表。
在28S反转方式下，由于采用与前一帧(最后一帧)画面相同的第一灰阶表进行灰阶输入时在第一帧画面出现闪烁，本公开以第一灰阶表为基准，对第一灰阶表进行调整来获得第二灰阶表，并且液晶显示面板的驱动电路以第一灰阶表为基准输出灰阶电压。第一灰阶表中存储有灰阶及其一一对应的灰阶电压，在将灰阶电压输入至各子像素时，基于显示画面为奇数帧还是偶数帧控制输入至各子像素的灰阶电压的极性。在显示第一帧画面时，逻辑板Tcon接收到的前端信号为“输出灰阶127”，通过第一灰阶表中的第一灰阶127与第二灰阶表中的第二灰阶123的对应关系，调用第二灰阶表中的第二灰阶123，来显示前端信号“输出灰阶127”对应的亮度。此处假设第一灰阶表中的第一灰阶127在其他帧画面中的显示亮度等于第二灰阶表中的第二灰阶123在第一帧画面中的显示亮度。由此可知，第二灰阶表中的第二灰阶123与第一灰阶表中的前端信号“输出灰阶127”对应。
可选地，在将第一灰阶表切换为第二灰阶表和将第二灰阶表切换为第一灰阶表时，包括：判断是否处于第一帧画面的画面保持时段内，如是 则将第二灰阶表切换为第一灰阶表；以及判断是否处于最后一帧画面的画面保持时段内，如是则将第一灰阶表切换为第二灰阶表。也就是说，在确定处于第一帧画面的画面保持时段内时，将第二灰阶表切换为第一灰阶表，否则保持使用第二灰阶表。在确定处于最后一帧画面的画面保持时段内时，将第一灰阶表切换为第二灰阶表，否则保持使用第一灰阶表。在第一帧画面之后以及同一预定时段内的最后一帧画面之间的其他帧画面保持使用第一灰阶表。
可选地，通过定时器对(有效)时钟信号进行计数的定时方式，判断是否处于第一帧画面或最后一帧画面的画面保持时段内，从而将第一灰阶表切换为第二灰阶表或将第二灰阶表切换为第一灰阶表。以液晶显示面板一帧画面包括2160行子像素、10个时钟信号为例进行说明。10个时钟信号可分为5组，一组两个时钟信号用于一行子像素。一组两个时钟信号中的一个为有效(例如高电平时钟CLK)信号，另一个为无效(例如低电平)时钟信号。5组时钟信号分别控制相邻的5行子像素。将该10个时钟信号作为一个单元，对其中的第一个有效高电平时钟信号进行计数。在这10个时钟信号控制第一个5行子像素时，对其中的第一个有效高电平时钟信号计数为1；在这10个时钟信号控制下一个5行子像素时，对其中的第一个有效高电平时钟信号计数为2，依此类推。每帧画面CLK的高电平个数为2160/5+2(2个dummy CLK，例如复位CLK和起始CLK)即434个高电平。对于60HZ刷新频率，28S时长内，会出现434×60×28＝729120个高电平。
对于一帧画面，当计数为434时，表示该帧画面有效数据(灰阶电压)传输完成，进入Blank(画面保持)时段。在第一帧画面和最后一帧画面的Blank时段，可以将第一灰阶表切换为第二灰阶表或将第二灰阶表切换为第一灰阶表，下一帧画面的数据则会调用相应的第二灰阶表或第一灰阶表进行灰阶输出。
例如，为了让第一帧画面之后的下一帧画面结束后恢复为第一灰阶表，需要重置计数(从零开始计数)，并判断计数是否为28S结束后第一帧画面的Blank区，再切换回第一灰阶表。如图5为根据本公开的实施例的定时控制流程图，以下参考图5，来对灰阶表的切换进行详细说明。
该定时控制可从显示一帧画面开始。在一帧画面开始后，在步骤S200，对CLK信号进行计数。
在步骤S202，对CLK信号的计数值进行判断，即判断(有效)时钟信号的计数值是否达到第一预定值。当该计数值未达到第一预定值(例如对应28S反转方式的729120个高电平)时，返回步骤S200，继续计数。当该计数值达到第一预定值时，进入步骤S204。
在步骤S204，将第一灰阶表切换为第二灰阶表，并重置计数。在显示下一帧画面时，则采用第二灰阶表。重置计数指的是之前计数清零，重新开始下一28S计数。
在步骤S206，重置计数开始后，对CLK信号进行计数。
在步骤S208，对CLK信号的计数值进行判断，即判断(有效)时钟信号的计数值是否达到第二预定值。当该计数值未达到第二预定值(例如对应28S反转方式的434个高电平)时，返回步骤S206继续计数。当该计数值达到第二预定值时，进入步骤S210。
在步骤S210，将第二灰阶表切换为第一灰阶表，并返回步骤S200，对CLK信号继续进行计数。在将第二灰阶表切换为第一灰阶表后，在显示下一帧画面时，则采用第一灰阶表。
本公开以一帧画面包括2160行子像素、10个时钟信号，10个时钟信号分为5个组并且对5个组中的一个高电平信号进行计数为例进行说明，但本公开不限于此。
可以通过第一灰阶表得到第二灰阶表。以下说明如何通过第一灰阶表得到第二灰阶表。例如逻辑板Tcon接收到的前端信号为“输出127灰阶”，接下来Tcon会在第一灰阶表中进行查表，其中包括R、G、B三色的灰阶。然后对第一灰阶表中的三色的灰阶进行降低便可得到第二灰阶表。然后根据降低后的第二灰阶表输出，即可改变输出的灰阶电压。
图6为根据本公开的实施例的第二灰阶表获取方法流程图，以下参考图6来对第二灰阶表获取方法进行详细说明。
在步骤S300，确定第一灰阶表中的包括多个第一灰阶的灰阶范围。本公开以灰阶范围L0～L255为例进行说明，但本公开不限于此。
在步骤S302，从包括第一灰阶表中的多个第一灰阶的灰阶范围中获 取多个第一代表灰阶，其中，多个第一代表灰阶在第一灰阶表中沿灰阶从小至大顺序排列并涵盖多个第一灰阶的取值范围。例如，多个第一代表灰阶可分别选择L32、L63、L127、L191和L223，大致覆盖L0～L255的灰阶范围。
在步骤S304，利用亮度波形测试，确定多个第一代表灰阶中的每一个在第一帧画面之外的其它帧画面中的亮度。
在步骤S306，利用亮度波形测试，确定多个第一代表灰阶中的每一个在第一帧画面中的亮度。
在步骤S308，将多个第一代表灰阶中的每一个的灰阶进行递减直至通过递减后的第一代表灰阶所得的第一帧画面中的亮度、与通过多个第一代表灰阶值中的相应进行递减的一个所得的最后一帧画面的亮度之间的亮度差最小，并将递减之后的第一代表灰阶作为相应的第二代表灰阶。
可选地，可通过以下确定通过第一代表灰阶所得的第一帧画面中的亮度、与通过多个第一代表灰阶值中的相应一个所得的最后一帧画面的亮度之间的亮度差最小：向一个预定时段的最后一帧画面中的多个子像素输入的第一代表灰阶，将其后一个预定时段的第一帧画面中的多个子像素输入相同的第一代表灰阶；然后，将输入至其后一个预定时段的第一帧画面中的多个子像素的所述第一代表灰阶进行递减，直至一个预定时段的最后一帧画面与其后一个预定时段的第一帧画面的亮度波形尖峰最小。可以利用光电传感器(Photo Sensor)进行亮度波形测试。
例如，将第一灰阶表中的第一代表灰阶L32、L63、L127、L191和L223对应的电压递减后分别施加至最后一帧画面与其后第一帧画面，直至最后一帧画面与其后第一帧画面的切换处的亮度波长尖峰最小，如L127下降4个灰阶后亮度波形变化最小，L63下降2个灰阶后亮度波形变化最小。
可选地，可利用线性差值对多个第一代表灰阶之外的第一灰阶进行插值处理，来获取对应的第二灰阶。将第二代表灰阶和第二灰阶进行存储从而获得述第二灰阶表。具体地，利用在灰阶数值上两个相邻第二代表灰阶，对所述第一灰阶表中的所述多个第一代表灰阶之外的两个相邻第二代表灰阶之间的第一灰阶进行插值处理，以获取与多个第一代表灰阶之外的 两个相邻第二代表灰阶之间的第一灰阶对应的第二灰阶，并将第二代表灰阶和第二灰阶存储在第二灰阶表中。可选地，该插值处理可为线性插值处理，但本公开不限于此。
图7示出了根据本公开的实施例的用于液晶显示面板的驱动方法测试结果与相关技术的测试结果的对比示意图。从图7中可以看出，本公开的驱动方法对比目前采用的3帧(Frame)方式，有效地降低了28S瞬间亮度上的变化，同时也不会对画面造成显示异常，解决了28SPOL反转所带来的闪烁问题。
通过上述驱动驱动方法，本公开可以解决由于28SPOL反转带来的闪烁问题，从而提高液晶显示面板的显示质量。
根据本公开的另一方面，还提供了一种非暂时性计算机存储介质，其上存储有计算机指令，并且该计算机指令由处理器执行时，可实现以上所述的驱动方法，从而解决由于28SPOL反转带来的闪烁问题，从而提高液晶显示面板的显示质量。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开所附权利要求限定范围的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (15)

  1. 一种用于液晶显示面板的驱动方法，所述液晶显示面板包括呈阵列排布的多个子像素并且所述液晶显示基板的显示时间被划分为等时长的多个预定时段来显示多个奇数帧画面和多个偶数帧画面；在所述多个预定时段的每一个中，奇数帧画面和偶数帧画面依次切换，所述奇数帧画面和所述偶数帧画面依次切换时所述多个子像素的驱动电压在正极性和负极性之间进行反转；并且所述多个子像素中每一个的驱动电压在一个所述预定时段的最后一帧画面中的极性与其后一个所述预定时段的第一帧画面中的极性相同，
    所述驱动方法还包括：在所述多个预定时段的每一个中的第一帧画面之外的其它帧画面，所述多个子像素采用第一灰阶表进行画面显示，其中第一灰阶表包括多个第一灰阶；
    在所述多个预定时段的每一个中的第一帧画面，采用第二灰阶表来进行画面显示，其中所述第二灰阶表包括多个第二灰阶，
    以使得在相同的充电时长下，在所述多个子像素中的每个子像素显示所述第一帧画面时通过所述第二灰阶表中的第二灰阶所得的亮度与在该子像素显示所述其它帧画面时通过所述第一灰阶表中相应的第一灰阶所得的亮度之间的亮度差最小，其中，所述第二灰阶小于所述相应的第一灰阶。
  2. 根据权利要求1所述的驱动方法，其中，所述奇数帧画面和所述偶数帧画面中的每一帧画面的持续时段包括灰阶电压输入时段以及画面保持时段，并且在所述预定时段内的最后一帧画面的所述画面保持时段内将所述第一灰阶表切换为所述第二灰阶表。
  3. 根据权利要求2所述的驱动方法，其中，在所述预定时段内的第一帧画面的画面保持时段内，将所述第二灰阶表切换为所述第一灰阶表。
  4. 根据权利要求1-3中任一项所述的驱动方法，其中，将所述第一 灰阶表切换为所述第二灰阶表和将所述第二灰阶表切换为所述第一灰阶表，包括：
    判断是否处于所述第一帧画面的画面保持时段内，如是则将所述第二灰阶表切换为所述第一灰阶表；以及
    判断是否处于所述最后一帧画面的画面保持时段内，如是则将所述第一灰阶表切换为所述第二灰阶表。
  5. 根据权利要求4所述的驱动方法，其中，通过计数器对时钟信号进行计数，以判断是否处于所述第一帧画面或所述最后一帧画面的画面保持时段内，从而将所述第一灰阶表切换为所述第二灰阶表或将所述第二灰阶表切换为所述第一灰阶表。
  6. 根据权利要求5所述的驱动方法，其中，将所述第一灰阶表切换为所述第二灰阶表或将所述第二灰阶表切换为所述第一灰阶表包括：
    步骤S200、对时钟信号进行计数；
    步骤S202、判断所述时钟信号的计数值是否达到第一预定值，如是则确定处于所述最后一帧画面的画面保持时段并进入步骤S204，如否则返回步骤S200；
    步骤S204、将所述第一灰阶表切换为所述第二灰阶表，并重置计数；
    步骤S206、对所述时钟信号进行计数；
    步骤S208、判断所述时钟信号的计数值是否达到第二预定值，如是则确定处于所述第一帧画面的画面保持时段内并进入步骤S210，如否则返回步骤S206；
    步骤S210、将所述第二灰阶表切换为所述第一灰阶表，并返回步骤S200以对所述时钟信号继续计数。
  7. 根据权利要求1-6中任一项所述的驱动方法，还包括通过所述第一灰阶表中的多个第一灰阶获取所述第二灰阶表中的多个第二灰阶，其中，获取所述第二灰阶表中的多个第二灰阶包括：
    确定包括所述第一灰阶表中的所述多个第一灰阶的灰阶范围；
    从包括所述第一灰阶表中的所述多个第一灰阶的灰阶范围中获取多个第一代表灰阶，其中，所述多个第一代表灰阶在所述第一灰阶表中沿灰阶从小至大顺序排列并涵盖所述多个第一灰阶的灰阶范围；
    利用亮度波形测试，确定所述多个第一代表灰阶中的每一个在所述第一帧画面之外的其它帧画面中的亮度；
    利用亮度波形测试，确定所述多个第一代表灰阶中的每一个在所述第一帧画面中的亮度；以及
    将所述多个第一代表灰阶中的每一个的灰阶进行递减直至通过递减后的所述第一代表灰阶所得的所述第一帧画面中的亮度、与通过所述多个第一代表灰阶值中的相应进行递减的一个所得的最后一帧画面的亮度之间的亮度差最小，并将递减之后的第一代表灰阶作为相应的第二代表灰阶。
  8. 根据权利要求7所述的驱动方法，还包括：利用在灰阶数值上两个相邻所述第二代表灰阶，对所述第一灰阶表中的所述多个第一代表灰阶之外的两个相邻所述第二代表灰阶之间的第一灰阶进行插值处理，以获取与所述多个第一代表灰阶之外的两个相邻所述第二代表灰阶之间的第一灰阶对应的第二灰阶，并将所述第二代表灰阶和所述第二灰阶存储在所述第二灰阶表中。
  9. 根据权利要求8所述的驱动方法，其中，利用线性插值对所述多个第一代表灰阶之外的两个相邻所述第二代表灰阶之间的第一灰阶进行插值处理，来获取两个相邻所述第二代表灰阶之间的第二灰阶。
  10. 根据权利要求9所述的驱动方法，其中，通过以下确定通过所述第一代表灰阶所得的所述第一帧画面中的亮度、与通过所述多个第一代表灰阶值中的相应一个所得的最后一帧画面的亮度之间的亮度差最小：
    向一个所述预定时段的最后一帧画面中的所述多个子像素输入的所述第一代表灰阶，将其后一个所述预定时段的第一帧画面中的所述多个子像素输入相同的所述第一代表灰阶；以及
    将输入至其后一个所述预定时段的第一帧画面中的所述多个子像素的所述第一代表灰阶进行递减，直至一个所述预定时段的最后一帧画面与其后一个所述预定时段的第一帧画面的亮度波形尖峰最小。
  11. 根据权利要求10所述的驱动方法，其中，利用光电传感器进行所述亮度波形测试。
  12. 根据权利要求1所述的驱动方法，其中，在显示连续的奇数帧画面和偶数帧画面时，采用隔行扫描方式驱动所述液晶显示面板，其中，
    向在所述连续的奇数帧画面和偶数帧画面中的一者的奇数行子像素输入灰阶，并且，通过位于相同列的相邻奇数行子像素的灰阶获取偶数行子像素的灰阶并将所述获取的偶数行子像素的灰阶输入相应偶数行子像素，以及
    向在所述连续的奇数帧和偶数帧中的另一者的偶数行子像素输入灰阶，并且，通过位于相同列的相邻偶数行子像素的灰阶获取奇数行子像素的灰阶并将所述获取的奇数行子像素的灰阶输入相应奇数行子像素。
  13. 根据权利要求12所述的驱动方法，其中，通过计算相同列的相邻奇数行子像素的灰阶的平均值来获取相应偶数行子像素的灰阶，并且通过计算相同列的相邻偶数行子像素的灰阶的平均值来获取相应奇数行子像素的灰阶。
  14. 根据权利要求1所述的驱动方法，其中，所述预定时段为28s。
  15. 一种非暂时性计算机存储介质，其上存储有计算机指令，并且所述计算机指令由处理器执行时，可实现权利要求1-14中任一项所述的驱动方法。
PCT/CN2021/082023 2021-03-22 2021-03-22 用于液晶显示面板的驱动方法和非暂时性计算机存储介质 WO2022198367A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2021/082023 WO2022198367A1 (zh) 2021-03-22 2021-03-22 用于液晶显示面板的驱动方法和非暂时性计算机存储介质
CN202180000545.0A CN115398531B (zh) 2021-03-22 2021-03-22 用于液晶显示面板的驱动方法和非暂时性计算机存储介质
US17/764,635 US12039948B2 (en) 2021-03-22 2021-03-22 Driving method for liquid crystal display panel and non-transitory computer-readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/082023 WO2022198367A1 (zh) 2021-03-22 2021-03-22 用于液晶显示面板的驱动方法和非暂时性计算机存储介质

Publications (1)

Publication Number Publication Date
WO2022198367A1 true WO2022198367A1 (zh) 2022-09-29

Family

ID=83395054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/082023 WO2022198367A1 (zh) 2021-03-22 2021-03-22 用于液晶显示面板的驱动方法和非暂时性计算机存储介质

Country Status (3)

Country Link
US (1) US12039948B2 (zh)
CN (1) CN115398531B (zh)
WO (1) WO2022198367A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101604512A (zh) * 2008-06-12 2009-12-16 乐金显示有限公司 液晶显示器及其驱动方法
CN102136243A (zh) * 2010-12-30 2011-07-27 友达光电股份有限公司 平面显示装置的影像显示方法
JP2013186427A (ja) * 2012-03-09 2013-09-19 Ricoh Co Ltd 映像処理装置
CN105654917A (zh) * 2016-04-08 2016-06-08 京东方科技集团股份有限公司 极性反转驱动方法、数据驱动器及液晶面板
CN106997754A (zh) * 2017-04-14 2017-08-01 京东方科技集团股份有限公司 时序控制器、显示装置及显示驱动方法
CN109712587A (zh) * 2019-02-25 2019-05-03 京东方科技集团股份有限公司 液晶显示面板及其驱动方法、装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101222983B1 (ko) * 2006-11-06 2013-01-17 엘지디스플레이 주식회사 액정표시장치 및 그의 구동 방법
CN101212606B (zh) * 2006-12-25 2011-09-28 奇美电子股份有限公司 像素驱动与显示影像数据的方法
CN102842299B (zh) * 2012-09-13 2015-04-08 京东方科技集团股份有限公司 一种液晶显示装置的驱动方法、驱动装置及液晶显示装置
CN105225634B (zh) * 2015-10-12 2017-11-03 深圳市华星光电技术有限公司 Amoled显示器的驱动系统及驱动方法
KR102560741B1 (ko) * 2015-12-31 2023-07-27 엘지디스플레이 주식회사 액정표시장치
CN107657916B (zh) * 2017-09-26 2020-05-08 惠科股份有限公司 图像补偿信号生成的方法、结构及修复系统
CN108831399B (zh) * 2018-07-25 2020-11-24 深圳市华星光电技术有限公司 显示驱动方法及液晶显示装置
CN110310609B (zh) * 2019-06-10 2021-10-01 惠科股份有限公司 显示面板驱动电路及方法
CN110379391B (zh) * 2019-07-02 2021-08-06 南京中电熊猫液晶显示科技有限公司 一种液晶显示面板以及改善液晶显示面板动态画面拖尾的方法
CN111508449B (zh) * 2020-05-29 2022-03-18 京东方科技集团股份有限公司 电压供给电路、显示驱动电路、显示装置和显示驱动方法
CN112180631B (zh) * 2020-10-16 2023-06-30 Tcl华星光电技术有限公司 显示面板及电子设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101604512A (zh) * 2008-06-12 2009-12-16 乐金显示有限公司 液晶显示器及其驱动方法
CN102136243A (zh) * 2010-12-30 2011-07-27 友达光电股份有限公司 平面显示装置的影像显示方法
JP2013186427A (ja) * 2012-03-09 2013-09-19 Ricoh Co Ltd 映像処理装置
CN105654917A (zh) * 2016-04-08 2016-06-08 京东方科技集团股份有限公司 极性反转驱动方法、数据驱动器及液晶面板
CN106997754A (zh) * 2017-04-14 2017-08-01 京东方科技集团股份有限公司 时序控制器、显示装置及显示驱动方法
CN109712587A (zh) * 2019-02-25 2019-05-03 京东方科技集团股份有限公司 液晶显示面板及其驱动方法、装置

Also Published As

Publication number Publication date
CN115398531B (zh) 2024-08-27
CN115398531A (zh) 2022-11-25
US20240119912A1 (en) 2024-04-11
US12039948B2 (en) 2024-07-16

Similar Documents

Publication Publication Date Title
JP4988692B2 (ja) 液晶表示装置及びその駆動方法
KR101374425B1 (ko) 액정표시장치와 그 도트 인버젼 제어방법
JP4856052B2 (ja) 液晶表示装置とその駆動方法
CN102262867B (zh) 液晶显示器及其驱动方法
US9478177B2 (en) Display device configured to perform pseudo interlace scanning image display based on progressive image signal, driving method thereof, and display driving circuit
CN100583222C (zh) 共用电压补偿装置、液晶显示器及其驱动方法
US9520097B2 (en) Display device with compensating backlight drive circuit and method for driving same
KR102651807B1 (ko) 액정표시장치와 그 구동 방법
US20150084941A1 (en) Polarity inversion driving method for liquid crystal display panel, driving apparatus and display device
KR100349429B1 (ko) 액정 표시 장치 및 그 구동 방법
CN101556779A (zh) 液晶显示器及其驱动方法
JP2011007889A (ja) 液晶表示装置
KR102269487B1 (ko) 표시 패널의 구동 방법 및 이를 수행하기 위한 표시 장치
KR101714952B1 (ko) 액정 표시 패널 및 그 구동 방법
CN113971943B (zh) 一种显示驱动方法及其装置、显示装置
CN101458909A (zh) 用于控制液晶显示设备的驱动的装置和方法
CN109949766B (zh) 一种像素矩阵驱动方法及显示装置
US10997932B2 (en) Method for driving pixel matrix and display device
CN116229914A (zh) 显示面板的图像处理方法、装置、存储介质及显示装置
CN110827733B (zh) 用于显示面板的显示方法与显示设备
US8164624B2 (en) Data converting device, method thereof, and liquid crystal display device having the same
WO2022198367A1 (zh) 用于液晶显示面板的驱动方法和非暂时性计算机存储介质
KR20110018722A (ko) 액정표시장치와 그 데이터 극성 제어방법
WO2004015978A2 (en) Anti-contouring display correction
KR20070103561A (ko) 액정표시장치 및 그의 구동방법

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 17764635

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21932002

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22.01.2024)

122 Ep: pct application non-entry in european phase

Ref document number: 21932002

Country of ref document: EP

Kind code of ref document: A1