WO2020107656A1 - 像素驱动方法 - Google Patents

像素驱动方法 Download PDF

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WO2020107656A1
WO2020107656A1 PCT/CN2019/070718 CN2019070718W WO2020107656A1 WO 2020107656 A1 WO2020107656 A1 WO 2020107656A1 CN 2019070718 W CN2019070718 W CN 2019070718W WO 2020107656 A1 WO2020107656 A1 WO 2020107656A1
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sub
pixel
column
row
pixels
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王耿
吴宇
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels

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  • the present invention relates to the field of display technology, and in particular to a pixel driving method.
  • Thin film transistor Thin Film Transistor, TFT is the main driving element in the current liquid crystal display device (Liquid Crystal Display) and active matrix driven organic electroluminescence display device (Active Matrix Organic Light-Emitting Diode, AMOLED), It is directly related to the display performance of the flat panel display device.
  • liquid crystal displays which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to infuse liquid crystal molecules between the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color filter (CF) substrate, and apply them separately on the two substrates
  • the pixel voltage and the common voltage control the rotation direction of the liquid crystal molecules by the electric field formed between the pixel voltage and the common voltage, so as to transmit the light of the backlight module to generate a picture.
  • the pixel driving circuit includes a plurality of sub-pixels arranged in an array, one scan line corresponds to a row of sub-pixels, and one data line corresponds to two adjacent columns of sub-pixels, however, a high refresh rate and high-quality liquid crystal panel will inevitably cause a source
  • the data signal transmitted from the source driver to the data line needs to be frequently switched between the low gray level voltage and the high gray level voltage.
  • An object of the present invention is to provide a pixel driving method that converts a heavy-loaded picture into a light-loaded picture, and solves the problem of excessively high temperature of the source driver under the heavy-loaded picture.
  • the present invention provides a pixel driving method, including the following steps:
  • Step S1 Provide a pixel driving circuit including a plurality of sub-pixels distributed in an array, a plurality of scanning lines extending in a horizontal direction, and a plurality of data lines extending in a vertical direction; each scanning line corresponds to a row of sub-pixels For pixels, each data line corresponds to a plurality of sub-pixels located in odd rows in one column of sub-pixels and a plurality of sub-pixels located in even rows in another column of sub-pixels;
  • Step S2 Obtain the target brightness value of the sub-pixel in the j-th row and the i-th column, and let i and j be positive integers;
  • Step S3 Obtain the brightness compensation value of the sub-pixel in the j-th row and the i-th column;
  • Step S4 Determine whether the brightness compensation value of the sub-pixel in row j and column i is greater than a preset threshold; when the brightness compensation value is greater than the preset threshold, then according to the target brightness value and brightness compensation value of the sub-pixel in row j and column i Output the compensated brightness value of the sub-pixel in row j and column i; when the brightness compensation value is less than or equal to the preset threshold, the brightness value of the sub-pixel in row j and column i is output.
  • step S4 by outputting the compensated luminance value of the sub-pixel in the j-th row and the i-th column, the display screen of the overloaded screen is converted into the display screen of the light-loaded screen.
  • the overloaded picture is a picture in which the brightness values of the sub-pixels in odd rows are greater than or equal to the preset first brightness value and the brightness values of the sub-pixels in even rows are less than or equal to the preset second brightness value.
  • the first brightness value is greater than the second brightness value.
  • Each column of sub-pixels is a sub-pixel of the same color, and each row of sub-pixels includes a plurality of red sub-pixels, a plurality of green sub-pixels, and a plurality of blue sub-pixels that are sequentially arranged in the horizontal direction.
  • the total number of columns of multiple sub-pixels is 45; the total number of rows of multiple sub-pixels is 3.
  • step S2 Obtain the target brightness value of the sub-pixel in the j-th row and i-th column, where Is the target brightness value of the sub-pixel in row j, column i , M j,i is the brightness value of the sub-pixel in row j, column i, M j+1,i is the brightness value of the sub-pixel in row j+1, column i, M j, i+3 are the luminance values of the sub-pixels in the jth row, i+3 column, and M j+1, i+3 are the luminance values of the sub-pixels in the j+1th row, i+3 column.
  • the calculation formula of the brightness compensation value in the step S3 Obtain the luminance compensation value of the sub-pixel in the jth row and i-th column, where ⁇ is the luminance compensation value of the sub-pixel in the j-th row and i-th column, and n is the total number of columns of multiple sub-pixels;
  • ⁇ j,i
  • , ⁇ j+1,i
  • step S4 according to the calculation formula of the compensated brightness value:
  • the compensated luminance value of the sub-pixel in the j-th row and the i-th column is obtained, where NewM j,i is the compensated luminance value of the sub-pixel in the j-th row and the i-th column, and ratio is the compensation coefficient.
  • step S3 when j is even and i is 1, M j+1, i-1 is replaced with M j+1 , 6 , where M j+1, 6 is the sixth in line j+1 The brightness value of the column sub-pixel.
  • the invention also provides a pixel driving method, including the following steps:
  • Step S1 Provide a pixel driving circuit including a plurality of sub-pixels distributed in an array, a plurality of scanning lines extending in a horizontal direction, and a plurality of data lines extending in a vertical direction; each scanning line corresponds to a row of sub-pixels For pixels, each data line corresponds to a plurality of sub-pixels located in odd rows in one column of sub-pixels and a plurality of sub-pixels located in even rows in another column of sub-pixels;
  • Step S2 Obtain the target brightness value of the sub-pixel in the j-th row and the i-th column, and let i and j be positive integers;
  • Step S3 Obtain the brightness compensation value of the sub-pixel in the j-th row and the i-th column;
  • Step S4 Determine whether the brightness compensation value of the sub-pixel in row j and column i is greater than a preset threshold; when the brightness compensation value is greater than the preset threshold, then according to the target brightness value and brightness compensation value of the sub-pixel in row j and column i Output the compensated brightness value of the sub-pixel in row j and column i; when the brightness compensation value is less than or equal to the preset threshold, the brightness value of the sub-pixel in row j and column i is output;
  • step S4 by outputting the compensated brightness value of the sub-pixel in the jth row and the ith column, the display screen of the heavy-loaded screen will be converted into the display screen of the light-loaded screen;
  • Each column of sub-pixels is a sub-pixel of the same color, and each row of sub-pixels includes a plurality of red sub-pixels, a plurality of green sub-pixels, and a plurality of blue sub-pixels that are sequentially arranged in the horizontal direction.
  • the pixel driving method of the present invention determines whether the brightness compensation value is greater than a preset threshold value by obtaining the brightness compensation value of the sub-pixel in the jth row and the i-th column; when the brightness compensation value is less than or equal to the preset value Threshold, you can know that the current display screen is not a overloaded screen, so you can directly output the brightness value of the sub-pixel in row j and column i without compensating the brightness value.
  • the current display screen is a overloaded screen
  • the compensated brightness value of the sub-pixel in the j-th column and the i-th column is output according to the target brightness value and the brightness compensation value of the sub-pixel in the j-th row and the i-th column to convert the overloaded screen into Light load screen solves the problem of excessive temperature of the source driver under heavy load screen.
  • FIG. 2 is a schematic diagram of a pixel driving circuit of the pixel driving method of the present invention.
  • the present invention provides a pixel driving method, including the following steps:
  • Step S1 please refer to FIG. 2 to provide a pixel driving circuit including a plurality of sub-pixels 10 distributed in an array, a plurality of scanning lines 20 extending in a horizontal direction, and a plurality of data lines 30 extending in a vertical direction;
  • Each scan line 20 corresponds to a row of sub-pixels 10
  • each data line 30 corresponds to a plurality of sub-pixels 10 in an odd-numbered row in one column of sub-pixels 10 in two adjacent columns of sub-pixels 10 and an even-numbered row in another column of sub-pixels 10 Of multiple sub-pixels 10;
  • Step S2 Obtain the target luminance value of the sub-pixel 10 in the j-th row and the i-th column, and let i and j be positive integers;
  • Step S3 Obtain the brightness compensation value of the sub-pixel 10 in the j-th row and the i-th column;
  • Step S4 Determine whether the brightness compensation value of the sub-pixel 10 in the j-th row and the i-th column is greater than a preset threshold; when the brightness compensation value is greater than the preset threshold, the target brightness value and brightness of the sub-pixel 10 in the j-th row and the i-th column The compensation value outputs the compensated luminance value of the sub-pixel 10 in the j-th row and the i-th column; when the luminance compensation value is less than or equal to the preset threshold, the luminance value of the sub-pixel 10 in the j-th row and the i-th column is output.
  • step S4 by outputting the compensated luminance value of the sub-pixel 10 in the j-th row and the i-th column, the display screen of the overloaded screen will be converted into the display screen of the light-loaded screen.
  • the brightness values of the sub-pixels 10 in the odd rows of the reloaded picture are all greater than or equal to the preset first brightness value and the brightness values of the sub-pixels 10 in the even rows are less than or equal to the preset second brightness value And the first brightness value is greater than the second brightness value.
  • the present invention determines whether the brightness compensation value is greater than a preset threshold value by obtaining the brightness compensation value of the sub-pixel 10 in the j-th row and the i-th column; when the brightness compensation value is less than or equal to the preset threshold value, then It can be known that the current display screen is not an overloaded screen, so the brightness value of the sub-pixel 10 in row j, column i can be output directly without compensating the brightness value.
  • the brightness compensation value is greater than the preset threshold, you can get Knowing that the current display screen is a overloaded screen, output the compensated brightness value of the sub-pixel 10 in the j-th column and the i-th column according to the target brightness value and the brightness compensation value of the sub-pixel 10 in the j-th row and the i-th column, so as to convert the overloaded screen into a light Loading screen, solved the problem of excessive temperature of source driver under heavy loading screen.
  • each column of sub-pixels 10 is a sub-pixel 10 of the same color
  • each row of sub-pixels 10 includes a plurality of red sub-pixels R, a plurality of green sub-pixels G, and a plurality of blue sub-pixels B sequentially arranged in the horizontal direction .
  • the plurality of sub-pixels 10 are the first sub-pixel 10 as the red sub-pixel R, the second sub-pixel 10 as the green sub-pixel G, the third sub-pixel 10 as the blue sub-pixel B, and the fourth sub-pixel 10 as the red sub-pixel R
  • the sub-pixels 10 in the fifth column are green sub-pixels G
  • the sub-pixels 10 in the sixth column are blue sub-pixels B, which are regularly and repeatedly arranged.
  • each pixel unit 40 includes 3 The three sub-pixels of the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B, that is, the total number of columns of the plurality of sub-pixels 10 is 45, and the total number of rows of the plurality of sub-pixels 10 is 3.
  • step S2 a calculation formula according to the target brightness value: Obtain the target luminance value of the sub-pixel 10 in the j-th row and the i-th column, where Is the target brightness value of the sub-pixel 10 in row j and column i, M j,i is the brightness value of the sub-pixel 10 in row j and column i, M j+1,i is the brightness of the sub-pixel 10 in row j+1 row and i Value, M j,i+3 is the luminance value of the sub-pixel 10 in the jth row, i+3 column, and M j+1,i+3 is the luminance value of the sub-pixel 10 in the j+1 row, i+3 column.
  • step S3 the formula for calculating the brightness compensation value is: Obtain the luminance compensation value of the sub-pixel 10 in the j-th row and the i-th column, where ⁇ is the luminance compensation value of the sub-pixel 10 in the j-th row and the i-th column, and n is the total number of columns of the plurality of sub-pixels 10;
  • ⁇ j,i
  • , ⁇ j+1,i
  • step S4 according to the calculated formula of the compensated brightness value:
  • the compensated luminance value of the sub-pixel 10 in the j-th row and the i-th column is obtained, where NewM j,i is the compensated luminance value of the sub-pixel 10 in the j-th row and the i-th column, and ratio is the compensation coefficient.
  • step S3 when j is even and i is 1, M j+1, i-1 is replaced with M j+1 , 6 , where M j+1, 6 is the j+1 The luminance value of the sub-pixel 10 in the sixth column of the row.
  • the pixel driving method of the present invention determines whether the brightness compensation value is greater than a preset threshold by obtaining the brightness compensation value of the sub-pixel in the j-th row and the i-th column; when the brightness compensation value is less than or equal to the preset Threshold value, you can know that the current display screen is not an overloaded screen, so you can directly output the brightness value of the sub-pixel in row j and column i without compensating the brightness value.
  • the current display screen is a overloaded screen, and the compensated brightness value of the sub-pixel in the j-th column and the i-th column is output according to the target brightness value and the brightness compensation value of the sub-pixel in the j-th row and the i-th column, so as to convert the heavy-loaded screen into light Loading screen, solved the problem of excessive temperature of source driver under heavy loading screen.

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Abstract

本发明提供一种像素驱动方法。该像素驱动方法通过获得第j行第i列子像素的亮度补偿值，判断该亮度补偿值是否大于是否大于一预设的阈值；当亮度补偿值小于或等于预设的阈值，则可以得知目前的显示画面不为重载画面，因此不需要对亮度值进行补偿而可以直接输出第j行第i列子像素的亮度值，当亮度补偿值大于预设的阈值，则可以得知目前的显示画面为重载画面，根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值，以将重载画面转换为轻载画面，解决了重载画面下源极驱动器温度过高的问题。

Description

像素驱动方法 技术领域
本发明涉及显示技术领域，尤其涉及一种像素驱动方法。
背景技术
薄膜晶体管(Thin Film Transistor，TFT)是目前液晶显示装置(Liquid Crystal Display，LCD)和有源矩阵驱动式有机电致发光显示装置(Active Matrix Organic Light-Emitting Diode，AMOLED)中的主要驱动元件，直接关系平板显示装置的显示性能。
现有市场上的液晶显示器大部分为背光型液晶显示器，其包括液晶显示面板及背光模组(backlight module)。液晶显示面板的工作原理是在薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)与彩色滤光片(Color Filter，CF)基板之间灌入液晶分子，并在两片基板上分别施加像素电压和公共电压，通过像素电压和公共电压之间形成的电场控制液晶分子的旋转方向，以将背光模组的光线透射出来产生画面。
随着人们对显示品质的不断追求，高刷新率(例如120HZ)和高画质(例如8K)的液晶显示器必然会成为以后的发展趋势，为了降低垂直串扰的风险，通常采用1G1D架构的像素驱动电路，即该像素驱动电路包括呈阵列排布的多个子像素，一条扫描线对应一行子像素，一条数据线对应相邻两列子像素，然而高刷新率和高画质的液晶面板必然会造成源极驱动器负载(loading)的加重，为了实现相邻行像素的亮暗交替，需要源极驱动器传输给数据线的数据信号在低灰阶电压与高灰阶电压之间频繁切换的时候，由于切换前后的压差很大，会导致源极驱动器的温度过高，从而源极驱动器造成损伤，使其无法正常工作；除此之外，在亮暗交替的重载画面下也会造成大量电流的消耗，增加了功耗。因此，现有技术通常在液晶显示器中增加散热片的方法来解决重载画面下源极驱动器温度过高的问题，但增设散热片无疑会导致成本的增加。
发明内容
本发明的目的在于提供一种像素驱动方法，将重载画面转换为轻载画面，解决了重载画面下源极驱动器温度过高的问题。
为实现上述目的，本发明提供了一种像素驱动方法，包括如下步骤：
步骤S1、提供像素驱动电路，该像素驱动电路包括呈阵列分布的多个子像素、沿水平方向延伸的多条扫描线以及沿竖直方向延伸的多条数据线；每条扫描线对应连接一行子像素，每条数据线对应连接相邻两列子像素中一列子像素中位于奇数行的的多个子像素以及另一列子像素中位于偶数行的的多个子像素；
步骤S2、获得第j行第i列子像素的目标亮度值，设i，j均为正整数；
步骤S3、获得第j行第i列子像素的亮度补偿值；
步骤S4、判断第j行第i列子像素的亮度补偿值是否大于一预设的阈值；当亮度补偿值大于预设的阈值，则根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值；当亮度补偿值小于或等于预设的阈值，则输出第j行第i列子像素的亮度值。
所述步骤S4中通过输出第j行第i列子像素补偿后的亮度值将为重载画面的显示画面转换为轻载画面的显示画面。
所述重载画面为奇数行的子像素的亮度值均大于或等于预设的第一亮度值且偶数行的子像素的亮度值均小于或等于预设的第二亮度值的画面，且所述第一亮度值大于第二亮度值。
每一列子像素为相同颜色子像素，且每一行子像素包括沿水平方向依次排布的多个红色子像素、多个绿色子像素及多个蓝色子像素。
多个子像素的总列数为45；多个子像素的总行数为3。
所述步骤S2中根据目标亮度值计算公式：
Figure PCTCN2019070718-appb-000001
获得第j行第i列子像素的目标亮度值，其中
Figure PCTCN2019070718-appb-000002
为第j行第i列子像素的目标亮度值，M j,i为第j行第i列子像素的亮度值，M j+1,i为第j+1行第i列子像素的亮度值，M j,i+3为第j行第i+3列子像素的亮度值，M j+1,i+3为第j+1行第i+3列子像素的亮度值。
所述步骤S3中根据亮度补偿值计算公式：
Figure PCTCN2019070718-appb-000003
获得第j行第i列子像素的亮度补偿值，其中，Δ为第j行第i列子像素的亮度补偿值，n为多个子像素的总列数；
当j为奇数时，Δ j,i＝|M j,i-M j+1,i+1|，Δ j+1,i＝|M j+1,i+1-M j+2,i|，其中，M j+1,i+1为第j+1行第i+1列子像素的亮度值，M j+2,i为第j+2行第i列子像素的亮度值；
当j为偶数时，Δ j,i＝|M j,i-M j+1,i-1|，Δ j+1,i＝|M j+1,i-1-M j+2,i|，其中，M j+1,i-1为第j+1行第i-1列子像素的亮度值。
所述步骤S4中根据补偿后的亮度值计算公式：
Figure PCTCN2019070718-appb-000004
获得第j行第i列子像素补偿后的亮度值，其中，NewM j,i为第j行第i列子像素补偿后的亮度值，ratio为补偿系数。
Figure PCTCN2019070718-appb-000005
为相邻两行子像素中四个相同颜色的子像素的亮度值的平均值。
所述步骤S3中，当j为偶数时且i为1时，M j+1,i-1用M j+1,6代替，其中，M j+1,6为第j+1行第6列子像素的亮度值。
本发明还提供了一种像素驱动方法，包括如下步骤：
步骤S1、提供像素驱动电路，该像素驱动电路包括呈阵列分布的多个子像素、沿水平方向延伸的多条扫描线以及沿竖直方向延伸的多条数据线；每条扫描线对应连接一行子像素，每条数据线对应连接相邻两列子像素中一列子像素中位于奇数行的的多个子像素以及另一列子像素中位于偶数行的的多个子像素；
步骤S2、获得第j行第i列子像素的目标亮度值，设i，j均为正整数；
步骤S3、获得第j行第i列子像素的亮度补偿值；
步骤S4、判断第j行第i列子像素的亮度补偿值是否大于一预设的阈值；当亮度补偿值大于预设的阈值，则根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值；当亮度补偿值小于或等于预设的阈值，则输出第j行第i列子像素的亮度值；
所述步骤S4中通过输出第j行第i列子像素补偿后的亮度值将为重载画面的显示画面转换为轻载画面的显示画面；
每一列子像素为相同颜色子像素，且每一行子像素包括沿水平方向依次排布的多个红色子像素、多个绿色子像素及多个蓝色子像素。
本发明的有益效果：本发明的像素驱动方法通过获得第j行第i列子像素的亮度补偿值，判断该亮度补偿值是否大于是否大于一预设的阈值；当亮度补偿值小于或等于预设的阈值，则可以得知目前的显示画面不为重载画面，因此不需要对亮度值进行补偿而可以直接输出第j行第i列子像素的亮度值，当亮度补偿值大于预设的阈值，则可以得知目前的显示画面为重载画面，根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值，以将重载画面转换为轻载画面，解决了重载画面下源极驱动器温度过高的问题。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的像素驱动方法的流程图；
图2为本发明的像素驱动方法的像素驱动电路的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，本发明提供一种像素驱动方法，包括如下步骤：
步骤S1、请参阅图2，提供像素驱动电路，该像素驱动电路包括呈阵列分布的多个子像素10、沿水平方向延伸的多条扫描线20以及沿竖直方向延伸的多条数据线30；每条扫描线20对应连接一行子像素10，每条数据线30对应连接相邻两列子像素10中一列子像素10中位于奇数行的的多个子像素10以及另一列子像素10中位于偶数行的的多个子像素10；
步骤S2、获得第j行第i列子像素10的目标亮度值，设i，j均为正整数；
步骤S3、获得第j行第i列子像素10的亮度补偿值；
步骤S4、判断第j行第i列子像素10的亮度补偿值是否大于一预设的 阈值；当亮度补偿值大于预设的阈值，则根据第j行第i列子像素10的目标亮度值及亮度补偿值输出第j行第i列子像素10补偿后的亮度值；当亮度补偿值小于或等于预设的阈值，则输出第j行第i列子像素10的亮度值。
具体的，所述步骤S4中通过输出第j行第i列子像素10补偿后的亮度值将为重载画面的显示画面转换为轻载画面的显示画面。
具体的，所述重载画面为奇数行的子像素10的亮度值均大于或等于预设的第一亮度值且偶数行的子像素10的亮度值均小于或等于预设的第二亮度值的画面，且所述第一亮度值大于第二亮度值。
需要说明的是，本发明通过获得第j行第i列子像素10的亮度补偿值，判断该亮度补偿值是否大于是否大于一预设的阈值；当亮度补偿值小于或等于预设的阈值，则可以得知目前的显示画面不为重载画面，因此不需要对亮度值进行补偿而可以直接输出第j行第i列子像素10的亮度值，当亮度补偿值大于预设的阈值，则可以得知目前的显示画面为重载画面，根据第j行第i列子像素10的目标亮度值及亮度补偿值输出第j行第i列子像素10补偿后的亮度值，以将重载画面转换为轻载画面，解决了重载画面下源极驱动器温度过高的问题。
具体的，每一列子像素10为相同颜色子像素10，且每一行子像素10包括沿水平方向依次排布的多个红色子像素R、多个绿色子像素G及多个蓝色子像素B。即多个子像素10以第一列子像素10为红色子像素R，第二列子像素10为绿色子像素G，第三列子像素10为蓝色子像素B，第四列子像素10为红色子像素R，第五列子像素10为绿色子像素G，第六列子像素10为蓝色子像素B为规律重复排布。
具体的，为了避免文字等高频显示的干扰，在充分节约成本的前提下，通过实验得出在水平方向上取45个像素单元40求亮度补偿值即可，每个像素单元40包括3个红色子像素R，绿色子像素G及蓝色子像素B三个子像素，即多个子像素10的总列数为45，多个子像素10的总行数为3。
具体的，所述步骤S2中根据目标亮度值计算公式：
Figure PCTCN2019070718-appb-000006
获得第j行第i列子像素10的目标亮度值，其中
Figure PCTCN2019070718-appb-000007
为第j行第i列子像素10的目标亮度值，M j,i为第j行第i列子像素10的亮度值，M j+1,i为第j+1行第i列子像素10的亮度值，M j,i+3为第j行第i+3列子像素10的亮度值，M j+1,i+3为第j+1 行第i+3列子像素10的亮度值。
具体的，所述步骤S3中根据亮度补偿值计算公式：
Figure PCTCN2019070718-appb-000008
获得第j行第i列子像素10的亮度补偿值，其中，Δ为第j行第i列子像素10的亮度补偿值，n为多个子像素10的总列数；
当j为奇数时，Δ j,i＝|M j,i-M j+1,i+1|，Δ j+1,i＝|M j+1,i+1-M j+2,i|，其中，M j+1,i+1为第j+1行第i+1列子像素10的亮度值，M j+2,i为第j+2行第i列子像素10的亮度值；
当j为偶数时，Δ j,i＝|M j,i-M j+1,i-1|，Δ j+1,i＝|M j+1,i-1-M j+2,i|，其中，M j+1,i-1为第j+1行第i-1列子像素10的亮度值；
具体的，所述步骤S4中根据补偿后的亮度值计算公式：
Figure PCTCN2019070718-appb-000009
获得第j行第i列子像素10补偿后的亮度值，其中，NewM j,i为第j行第i列子像素10补偿后的亮度值，ratio为补偿系数。
具体的，
Figure PCTCN2019070718-appb-000010
为相邻两行子像素10中四个相同颜色的子像素10的亮度值的平均值。
具体的，所述步骤S3中，当j为偶数时且i为1时，M j+1,i-1用M j+1,6代替，其中，M j+1,6为第j+1行第6列子像素10的亮度值。
综上所述，本发明的像素驱动方法通过获得第j行第i列子像素的亮度补偿值，判断该亮度补偿值是否大于是否大于一预设的阈值；当亮度补偿值小于或等于预设的阈值，则可以得知目前的显示画面不为重载画面，因 此不需要对亮度值进行补偿而可以直接输出第j行第i列子像素的亮度值，当亮度补偿值大于预设的阈值，则可以得知目前的显示画面为重载画面，根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值，以将重载画面转换为轻载画面，解决了重载画面下源极驱动器温度过高的问题。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (15)

  1. 一种像素驱动方法，包括如下步骤：
    步骤S1、提供像素驱动电路，该像素驱动电路包括呈阵列分布的多个子像素、沿水平方向延伸的多条扫描线以及沿竖直方向延伸的多条数据线；每条扫描线对应连接一行子像素，每条数据线对应连接相邻两列子像素中一列子像素中位于奇数行的的多个子像素以及另一列子像素中位于偶数行的的多个子像素；
    步骤S2、获得第j行第i列子像素的目标亮度值，设i，j均为正整数；
    步骤S3、获得第j行第i列子像素的亮度补偿值；
    步骤S4、判断第j行第i列子像素的亮度补偿值是否大于一预设的阈值；当亮度补偿值大于预设的阈值，则根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值；当亮度补偿值小于或等于预设的阈值，则输出第j行第i列子像素的亮度值。
  2. 如权利要求1所述的像素驱动方法，其中，所述步骤S4中通过输出第j行第i列子像素补偿后的亮度值将为重载画面的显示画面转换为轻载画面的显示画面。
  3. 如权利要求2所述的像素驱动方法，其中，所述重载画面为奇数行的子像素的亮度值均大于或等于预设的第一亮度值且偶数行的子像素的亮度值均小于或等于预设的第二亮度值的画面，且所述第一亮度值大于第二亮度值。
  4. 如权利要求1所述的像素驱动方法，其中，每一列子像素为相同颜色子像素，且每一行子像素包括沿水平方向依次排布的多个红色子像素、多个绿色子像素及多个蓝色子像素。
  5. 如权利要求1所述的像素驱动方法，其中，多个子像素的总列数为45；多个子像素的总行数为3。
  6. 如权利要求1所述的像素驱动方法，其中，所述步骤S2中根据目标亮度值计算公式：
    Figure PCTCN2019070718-appb-100001
    获得第j行第i列子像素的目标亮度值，其中
    Figure PCTCN2019070718-appb-100002
    为第j行第i列子像素的目标亮度值，M j,i为第j行第i列子像素的亮度值，M j+1,i为第j+1行第i列子 像素的亮度值，M j,i+3为第j行第i+3列子像素的亮度值，M j+1,i+3为第j+1行第i+3列子像素的亮度值。
  7. 如权利要求6所述的像素驱动方法，其中，所述步骤S3中根据亮度补偿值计算公式：
    Figure PCTCN2019070718-appb-100003
    获得第j行第i列子像素的亮度补偿值，其中，Δ为第j行第i列子像素的亮度补偿值，n为多个子像素的总列数；
    当j为奇数时，Δ j,i＝|M j,i-M j+1,i+1|，Δ j+1,i＝|M j+1,i+1-M j+2,i|，其中，M j+1,i+1为第j+1行第i+1列子像素的亮度值，M j+2,i为第j+2行第i列子像素的亮度值；
    当j为偶数时，Δ j,i＝|M j,i-M j+1,i-1|，Δ j+1,i＝|M j+1,i-1-M j+2,i|，其中，M j+1,i-1为第j+1行第i-1列子像素的亮度值。
  8. 如权利要求7所述的像素驱动方法，其中，所述步骤S4中根据补偿后的亮度值计算公式：
    Figure PCTCN2019070718-appb-100004
    获得第j行第i列子像素补偿后的亮度值，其中，NewM j,i为第j行第i列子像素补偿后的亮度值，ratio为补偿系数。
  9. 如权利要求6所述的像素驱动方法，其中，
    Figure PCTCN2019070718-appb-100005
    为相邻两行子像素中四个相同颜色的子像素的亮度值的平均值。
  10. 如权利要求7所述的像素驱动方法，其中，所述步骤S3中，当j为偶数时且i为1时，M j+1,i-1用M j+1,6代替，其中，M j+1,6为第j+1行第6列子像素的亮度值。
  11. 一种像素驱动方法，包括如下步骤：
    步骤S1、提供像素驱动电路，该像素驱动电路包括呈阵列分布的多个子像素、沿水平方向延伸的多条扫描线以及沿竖直方向延伸的多条数据线；每条扫描线对应连接一行子像素，每条数据线对应连接相邻两列子像素中一列子像素中位于奇数行的的多个子像素以及另一列子像素中位于偶数行的的多个子像素；
    步骤S2、获得第j行第i列子像素的目标亮度值，设i，j均为正整数；
    步骤S3、获得第j行第i列子像素的亮度补偿值；
    步骤S4、判断第j行第i列子像素的亮度补偿值是否大于一预设的阈值；当亮度补偿值大于预设的阈值，则根据第j行第i列子像素的目标亮度值及亮度补偿值输出第j行第i列子像素补偿后的亮度值；当亮度补偿值小于或等于预设的阈值，则输出第j行第i列子像素的亮度值；
    其中，所述步骤S4中通过输出第j行第i列子像素补偿后的亮度值将为重载画面的显示画面转换为轻载画面的显示画面；
    其中，每一列子像素为相同颜色子像素，且每一行子像素包括沿水平方向依次排布的多个红色子像素、多个绿色子像素及多个蓝色子像素。
  12. 如权利要求11所述的像素驱动方法，其中，所述重载画面为奇数行的子像素的亮度值均大于或等于预设的第一亮度值且偶数行的子像素的亮度值均小于或等于预设的第二亮度值的画面，且所述第一亮度值大于第二亮度值。
  13. 如权利要求11所述的像素驱动方法，其中，多个子像素的总列数为45；多个子像素的总行数为3。
  14. 如权利要求11所述的像素驱动方法，其中，所述步骤S2中根据目标亮度值计算公式：
    Figure PCTCN2019070718-appb-100006
    获得第j行第i列子像素的目标亮度值，其中
    Figure PCTCN2019070718-appb-100007
    为第j行第i列子像素的目标亮度值，M j,i为第j行第i列子像素的亮度值，M j+1,i为第j+1行第i列子像素的亮度值，M j,i+3为第j行第i+3列子像素的亮度值，M j+1,i+3为第j+1行第i+3列子像素的亮度值。
  15. 如权利要求14所述的像素驱动方法，其中，所述步骤S3中根据亮度补偿值计算公式：
    Figure PCTCN2019070718-appb-100008
    获得第j行第i列子像 素的亮度补偿值，其中，Δ为第j行第i列子像素的亮度补偿值，n为多个子像素的总列数；
    当j为奇数时，Δ j,i＝|M j,i-M j+1,i+1|，Δ j+1,i＝|M j+1,i+1-M j+2,i|，其中，M j+1,i+1为第j+1行第i+1列子像素的亮度值，M j+2,i为第j+2行第i列子像素的亮度值；
    当j为偶数时，Δ j,i＝|M j,i-M j+1,i-1|，Δ j+1,i＝|M j+1,i-1-M j+2,i|，其中，M j+1,i-1为第j+1行第i-1列子像素的亮度值。
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CN113870761A (zh) * 2021-09-27 2021-12-31 惠州华星光电显示有限公司 显示装置的驱动方法及显示装置
US12272325B2 (en) 2021-09-27 2025-04-08 Huizhou China Star Optoelectronics Display Co., Ltd. Driving method of display device and display device

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