WO2020228101A1 - 像素驱动方法 - Google Patents

像素驱动方法 Download PDF

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Publication number
WO2020228101A1
WO2020228101A1 PCT/CN2019/092717 CN2019092717W WO2020228101A1 WO 2020228101 A1 WO2020228101 A1 WO 2020228101A1 CN 2019092717 W CN2019092717 W CN 2019092717W WO 2020228101 A1 WO2020228101 A1 WO 2020228101A1
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sub
pixel
column
row
pixels
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PCT/CN2019/092717
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English (en)
French (fr)
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王耿
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深圳市华星光电技术有限公司
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Priority to US16/617,159 priority Critical patent/US11341927B2/en
Publication of WO2020228101A1 publication Critical patent/WO2020228101A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/3406Control of illumination source
    • G09G3/3413Details of control of colour illumination sources
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3607Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3674Details of drivers for scan electrodes
    • G09G3/3677Details of drivers for scan electrodes suitable for active matrices only
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3685Details of drivers for data electrodes
    • G09G3/3688Details of drivers for data electrodes suitable for active matrices only
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0421Structural details of the set of electrodes
    • G09G2300/0426Layout of electrodes and connections
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0439Pixel structures
    • G09G2300/0452Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/16Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present invention relates to the field of display technology, in particular to a pixel driving method.
  • TFT Thin Film Transistor
  • LCD Liquid Crystal Display
  • AMOLED Active Matrix Organic Light-Emitting Diode
  • 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 inject liquid crystal molecules between the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color filter (Color Filter, CF) substrate, and apply them on the two substrates respectively.
  • the pixel voltage and the common voltage control the rotation direction of the liquid crystal molecules through the electric field formed between the pixel voltage and the common voltage, so as to transmit the light of the backlight module to produce a picture.
  • the dual-gate structure display panel includes a plurality of sub-pixels 10' arranged in an array along a horizontal direction.
  • a plurality of scanning lines 20' extending and a plurality of data lines 30' extending in a vertical direction. Every two scanning lines 20' correspond to a row of sub-pixels 10'; every two adjacent columns of sub-pixels 10' are respectively alternately connected to the data lines 30' adjacent to the two adjacent columns of sub-pixels 10'. Therefore, the display panel of the double-gate structure can greatly reduce the number of source drivers (for example, 4 data lines 30' can correspond to 6 columns of sub-pixels 10'), thereby reducing the cost of the entire liquid crystal panel.
  • the display panel of the double-gate architecture has achieved cost reduction by reducing the number of source drivers, the scan rate of the display panel has been doubled, and the faster scan speed will inevitably cause the load of the source driver IC.
  • Aggravated, especially under heavy load screen for example, the gray level of all red sub-pixels and blue sub-pixels are 0, and the gray level of all green sub-pixels are 255
  • the source driver temperature has the risk of excessively high Causes irreversible damage to the temperature of the source driver, making it unable to work normally.
  • the problem of excessively high source driver temperature under heavy load images is mainly solved by adding heat sinks, but the increase of heat sinks will undoubtedly lead to an increase in cost.
  • the purpose of the present invention is to provide a pixel driving method, which can solve the problem of excessively high source driver temperature under heavy load without increasing the cost.
  • the present invention provides a pixel driving method, which includes the following steps:
  • Step S1 Provide a pixel driving circuit;
  • the pixel driving circuit includes a plurality of sub-pixel groups arranged in an array; each sub-pixel group includes two sub-pixels; all the sub-pixels are arranged in an array;
  • Step S2 according to the current brightness value of the sub-pixel in the j-th row and the i-th column and the current brightness values of multiple sub-pixels of the same color adjacent to the j-th row and the i-th column sub-pixel, the j-th row is obtained by the target brightness value calculation formula
  • Step S3 Obtain the brightness compensation value of the sub-pixel in the j-th row and the i-th column by using a brightness compensation value calculation formula
  • Step S4 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, output the compensated brightness value of the sub-pixel in the j-th row and the i-th column through the compensated brightness value calculation formula;
  • Step S5 Repeat steps S2-S4 until the compensated brightness values of all sub-pixels are output.
  • the pixel driving circuit further includes a plurality of scan lines extending in the horizontal direction and a plurality of data lines extending in the vertical direction; two sub-pixels in each sub-pixel group are arranged in the horizontal direction; every two scan lines are correspondingly connected A row of sub-pixels, in which one scan line connects the sub-pixels in odd-numbered columns in a row of sub-pixels, and the other scan line connects the sub-pixels in even-numbered columns in a row of sub-pixels; each column of sub-pixel groups is interlacedly connected to the sub-pixel groups in that column. Data lines adjacent to the left and right.
  • Each column of sub-pixels are sub-pixels of the same color, and every three adjacent sub-pixels in each row of sub-pixels are respectively a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the calculation formula of the target brightness value is: among them Is the target brightness value of the sub-pixel in row j and column i, M j,i is the current brightness value of the sub pixel in row j and column i, M j+1,i is the current brightness value of sub pixel in row j+1 and column i , M j,i+3 is the current brightness value of the sub-pixel in the jth row and i+3 column, and M j+1,i+3 is the current brightness value of the sub-pixel in the j+1th row and i+3 column.
  • step S3 according to the current brightness value difference between the multiple sub-pixels connected to the left and right adjacent data lines of the j-th row and the i-th column sub-pixel, and the current brightness value of the j-th row and the i-th column sub-pixel And the difference between the current brightness value of the sub-pixel in the j-th row connected to the same data line and the sub-pixel in the j-th row and the i-th column, the brightness compensation value of the sub-pixel in the j-th row and the i-th column is obtained through a brightness compensation value calculation formula.
  • ⁇ j,i is the brightness compensation value of the sub-pixel in the j-th row and the i-th column
  • ⁇ 1
  • ⁇ 2
  • ⁇ 3
  • ⁇ 4
  • ⁇ 5
  • ⁇ 6
  • ⁇ 7
  • , ⁇ 8
  • , ⁇ 9
  • , ⁇ 10
  • the formula for calculating the compensated brightness value is: Among them, NewM j,i is the brightness value of the sub-pixel in the j-th row and the i-th column after compensation, and ratio is the compensation coefficient corresponding to the brightness compensation value of the j-th row and the i-th column sub-pixel.
  • step S5 by outputting the compensated brightness values of all the sub-pixels, the display screen of the heavy load screen will be converted into the display screen of the light load screen.
  • the brightness values of the sub-pixels in the i-th column are all greater than or equal to the preset first brightness value, and the brightness values of the sub-pixels in the i+1th column are all less than or equal to the preset second brightness value. Screen, and the first brightness value is greater than the second brightness value.
  • the pixel driving method of the present invention is based on the current brightness value of the sub-pixel in the j-th row and the i-th column and the current brightness values of multiple sub-pixels of the same color adjacent to the j-th row and the i-th column sub-pixel,
  • the target brightness value of the sub-pixel in the jth row and the i-th column is obtained by the target brightness value calculation formula, and then the brightness compensation value of the j-th row and the i-th column sub-pixel is obtained by the brightness compensation value calculation formula.
  • the compensated brightness value of the sub-pixel in the j-th row and the i-th column is output through the compensated brightness value calculation formula to convert the heavy load picture into a light load picture, so as to solve the problem of heavy load without increasing the cost.
  • the source driver temperature is too high under the loading screen.
  • FIG. 1 is a schematic diagram of a conventional pixel driving circuit
  • FIG. 3 is a schematic diagram of step S1 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. 3 to provide a pixel driving circuit;
  • the pixel driving circuit includes a plurality of sub-pixel groups 11 arranged in an array; each sub-pixel group 11 includes two sub-pixels 10; all the sub-pixels 10 are arranged in an array;
  • Step S2 according to the current brightness value of the sub-pixel 10 in the j-th row and the i-th column and the current brightness values of the multiple sub-pixels 10 of the same color adjacent to the j-th row and the i-th column sub-pixel 10, obtain the target brightness value calculation formula
  • Step S3 Obtain the brightness compensation value of the sub-pixel 10 in the j-th row and the i-th column through a brightness compensation value calculation formula
  • Step S4 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, output the compensated brightness value of the sub-pixel 10 in the j-th row and the i-th column through the compensated brightness value calculation formula;
  • Step S5 Repeat steps S2-S4 until the compensated brightness values of all sub-pixels 10 are output.
  • the pixel driving circuit further includes a plurality of scan lines 20 extending in a horizontal direction and a plurality of data lines 30 extending in a vertical direction; two sub-pixels 10 in each sub-pixel group 11 are Arranged in the horizontal direction; every two scan lines 20 are connected to a row of sub-pixels 10, wherein one scan line 20 connects to sub-pixels 10 in odd columns in a row of sub-pixels 10, and another scan line 20 connects to sub-pixels 10 in a row of sub-pixels 10
  • the sub-pixels 10 in even-numbered columns; the sub-pixel groups 11 in each column are alternately connected to the data lines 30 adjacent to the sub-pixel groups 11 in the column.
  • each column of sub-pixels 10 is sub-pixels 10 of the same color, and every three adjacent sub-pixels 10 in each row of sub-pixels 10 are red sub-pixels R, green sub-pixels G, and blue sub-pixels B, respectively.
  • the first column of subpixels 10 are blue subpixels B
  • the second column of subpixels 10 are green subpixels G
  • the third column is red subpixels R
  • the fourth column of subpixels 10 are blue subpixels B, and so on.
  • the target brightness value calculation formula is: among them Is the target brightness value of the sub-pixel 10 in the j-th row and the i-th column, M j,i is the current brightness value of the sub-pixel 10 in the j-th row and the i-th column, M j+1,i is the sub-pixel 10 in the j+1-th row Current brightness value, M j,i+3 is the current brightness value of the sub-pixel 10 in the jth row and i+3 column, M j+1,i+3 is the current brightness of the sub-pixel 10 in the j+1th row and i+3 column value.
  • step S3 according to the current luminance value difference between the plurality of sub-pixels 10 connected to the left and right adjacent data lines 30 of the sub-pixel 10 in the j-th row and the i-th column, and the i-th row in the j-th row
  • the difference between the current brightness value of the column sub-pixel 10 and the current brightness value of the sub-pixel 10 connected to the same data line 30 in the j-th row and the i-th column sub-pixel 10 and located in the j-th row is obtained by the brightness compensation value calculation formula.
  • , ⁇ 2
  • , ⁇ 3
  • , ⁇ 4
  • , ⁇ 5
  • , ⁇ 6
  • , ⁇ 7
  • , ⁇ 8
  • , ⁇ 9
  • , ⁇ 10
  • M j+1, i-2 when i is 1 or 2, replace M j+1, i-2 with M j+1, i+4, and replace M j+1, i-1 with M j+1, i+5 , where , M j+1, i+4 is the current brightness value of sub-pixel 10 in row j+1 and column i+4, M j+1, i+5 is the current brightness value of sub-pixel 10 in row j+1 and column i+5 The current brightness value.
  • the compensation formula for calculating the brightness value is: Among them, NewM j,i is the compensated brightness value of the sub-pixel 10 in the j-th row and the i-th column, and ratio is the compensation coefficient corresponding to the brightness compensation value of the sub-pixel 10 in the j-th row and the i-th column.
  • step S5 by outputting the compensated brightness values of all the sub-pixels 10, the display image of the heavy load image will be converted into the display image of the light load image.
  • the reload image is that the brightness values of the sub-pixels 10 in the i-th column are all greater than or equal to the preset first brightness value, and the brightness values of the sub-pixels 10 in the i+1th column are all less than or equal to the preset A picture with a second brightness value, and the first brightness value is greater than the second brightness value.
  • the pixel driving method of the present invention is based on the current brightness value of the sub-pixel in the j-th row and the i-th column and the current brightness values of the multiple sub-pixels of the same color adjacent to the j-th row and the i-th column sub-pixels.
  • the target brightness value calculation formula obtains the target brightness value of the sub-pixel in the j-th row and the i-th column, and then the brightness compensation value of the j-th row and the i-th column sub-pixel is obtained through the brightness compensation value calculation formula, and finally according to the target brightness of the j-th row and the i-th column sub-pixel Value and brightness compensation value, the compensated brightness value of the sub-pixel in the j-th row and the i-th column is output through the compensated brightness value calculation formula to convert the heavy load picture into a light load picture, so as to solve the heavy load without increasing the cost.
  • the source driver temperature is too high under the screen.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

一种像素驱动方法,通过根据第j行第i列子像素的当前亮度值以及与该第j行第i列子像素相邻的多个相同颜色的子像素的当前亮度值(设j、i均为正整数),通过目标亮度值计算公式获得第j行第i列子像素的目标亮度值,再通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值,最后根据第j行第i列子像素的目标亮度值及亮度补偿值,通过补偿后的亮度值计算公式输出第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,从而在不增加成本的情况下解决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。
目前,为了进一步推动液晶电视的普及,液晶面板不断的追求低成本和高品质。为了降低成本,双栅(Dual-gate)架构的显示面板成为一种有效的方案,如图1所示,该双栅架构的显示面板包括呈阵列排布的多个子像素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’。每两条扫描线20’对应连接一行子像素10’;每相邻两列子像素10’分别交错连接到与该相邻两列子像素10’左右相邻的数据线30’。因此该双栅架构的显示面板可以大大减少源极驱动器(source driver)的数量(例如4条数据线30’可对应连接6列子像素10’),从而减少整个液晶面板的成本。
虽然双栅架构的显示面板虽然通过减少源极驱动器的数量实现了成本的降低,但是显示面板的扫描速率提升了一倍,更快的扫描速度必然会造成源极驱动器负载(driver IC loading)的加重,特别是在重载画面下(例如所有红色子像素和蓝色子像素的灰阶均为0,所有绿色子像素的灰阶均为255),源极驱动器温度具有过高的风险,从而对源极驱动器温度造成不可逆的损伤,使其无法正常工作。而目前主要通过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,但散热片的增加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,可以在不增加成本的情况下解决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;所述像素驱动电路包括呈阵列排布的多个子像素组;每个子像素组包括两个子像素;所有子像素呈阵列排布;
步骤S2、根据第j行第i列子像素的当前亮度值以及与该第j行第i列子像素相邻的多个相同颜色的子像素的当前亮度值,通过目标亮度值计算公式获得第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、通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值;
步骤S4、根据第j行第i列子像素的目标亮度值及亮度补偿值,通过补偿后的亮度值计算公式输出第j行第i列子像素补偿后的亮度值;
步骤S5、重复步骤S2-S4直至输出所有子像素补偿后的亮度值。
所述像素驱动电路还包括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;每个子像素组中的两个子像素沿水平方向排布;每两条扫描线对应连接一行子像素,其中,一条扫描线连接一行子像素中位于奇数列的子像素,另一条扫描线连接一行子像素中位于偶数列的子像素;每列子像素组分别交错连接到与该列子像素组左右相邻的数据线。
每一列子像素为相同颜色的子像素,且每一行子像素中的每相邻三个子像素分别为红色子像素、绿色子像素和蓝色子像素。
所述步骤S2中,所述目标亮度值计算公式为:
Figure PCTCN2019092717-appb-000001
其中
Figure PCTCN2019092717-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列子像素的当前亮度值,M j+1,i为第j+1行第i列子像素的当前亮度值,M j,i+3为第j行第i+3列子像素的当前亮度值,M j+1,i+3为第j+1行第i+3列子像素的当前亮度值。
所述步骤S3中,根据与所述第j行第i列子像素左右相邻的数据线连接的多个子像素之间的当前亮度值的差值,以及第j行第i列子像素的当前亮度值和与该第j行第i列子像素连接同一条数据线且位于第j行的子像素 的当前亮度值的差值,通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值。
所述步骤S3中,所述亮度补偿值计算公式为:
Figure PCTCN2019092717-appb-000003
其中,Δ j,i为第j行第i列子像素的亮度补偿值,Δ 1=|M j,i-M j,i+1|,Δ 2=|M j,i+1-M j+1,i-2|,Δ 3=|M j+1,i-2-M j+1,i-1|,Δ 4=|M j+1,i-1-M j+2,i|,Δ 5=|M j+2,i-M j+2,i+1|,Δ 6=|M j,i+2-M j,i+3|,Δ 7=|M j,i+3-M j+1,i|,Δ 8=|M j+1,i-M j+1,i+1|,Δ 9=|M j+1,i+1-M j+2,i+2|,Δ 10=|M j+2,i+2-M j+2,i+3|,M j,i为第j行第i列子像素的当前亮度值,M j,i+1为第j行第i+1列子像素的当前亮度值,M j+1,i-2为第j+1行第i-2列子像素的当前亮度值,M j+1,i-1为第j+1行第i-1列子像素的当前亮度值,M j+2,i为第j+2行第i列子像素的当前亮度值,M j+2,i+1为第j+2行第i+1列子像素的当前亮度值,M j,i+2为第j行第i+2列子像素的当前亮度值,M j,i+3为第j行第i+3列子像素的当前亮度值,M j+1,i为第j+1行第i列子像素的当前亮度值,M j+1,i+1为第j+1行第i+1列子像素的当前亮度值,M j+2,i+2为第j+2行第i+2列子像素的当前亮度值,M j+2,i+3为第j+2行第i+3列子像素的当前亮度值。
当i为1或2时,M j+1,i-2用M j+1,i+4代替,M j+1,i-1用M j+1,i+5代替, 其中,M j+1,i+4为第j+1行第i+4列子像素的当前亮度值,M j+1,i+5为为第j+1行第i+5列子像素的当前亮度值。
所述步骤S4中,所述补偿后的亮度值计算公式为:
Figure PCTCN2019092717-appb-000004
其中,NewM j,i为第j行第i列子像素补偿后的亮度值,ratio为第j行第i列子像素的亮度补偿值对应的补偿系数。
所述步骤S5通过输出所有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。
所述重载画面为第i列的子像素的亮度值均大于或等于预设的第一亮度值且第i+1列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。
本发明的有益效果:本发明的像素驱动方法通过根据第j行第i列子像素的当前亮度值以及与该第j行第i列子像素相邻的多个相同颜色的子像素的当前亮度值,通过目标亮度值计算公式获得第j行第i列子像素的目标亮度值,再通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值,最后根据第j行第i列子像素的目标亮度值及亮度补偿值,通过补偿后的亮度值计算公式输出第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,从而在不增加成本的情况下解决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为现有的像素驱动电路的示意图;
图2为本发明的像素驱动方法的流程图;
图3为本发明的像素驱动方法步骤S1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2,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3,提供像素驱动电路;所述像素驱动电路包括呈阵列排布的多个子像素组11;每个子像素组11包括两个子像素10;所有子像素10呈阵列排布;
步骤S2、根据第j行第i列子像素10的当前亮度值以及与该第j行第i列子像素10相邻的多个相同颜色的子像素10的当前亮度值,通过目标亮度值计算公式获得第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、通过亮度补偿值计算公式获得第j行第i列子像素10的亮度补偿值;
步骤S4、根据第j行第i列子像素10的目标亮度值及亮度补偿值,通过补偿后的亮度值计算公式输出第j行第i列子像素10补偿后的亮度值;
步骤S5、重复步骤S2-S4直至输出所有子像素10补偿后的亮度值。
具体的,请参阅图3,所述像素驱动电路还包括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;每个子像素组11中的两个子像素10沿水平方向排布;每两条扫描线20对应连接一行子像素10,其中,一条扫描线20连接一行子像素10中位于奇数列的子像素10,另一条扫描线20连接一行子像素10中位于偶数列的子像素10;每列子像素组11分别交错连接到与该列子像素组11左右相邻的数据线30。
具体的,每一列子像素10为相同颜色的子像素10,且每一行子像素10中的每相邻三个子像素10分别为红色子像素R、绿色子像素G和蓝色子像素B。例如第1列子像素10为蓝色子像素B,第2列子像素10为绿色子像素G,第3列为红色子像素R,第4列子像素10为蓝色子像素B,依次类推。
具体的,所述步骤S2中,所述目标亮度值计算公式为:
Figure PCTCN2019092717-appb-000005
其中
Figure PCTCN2019092717-appb-000006
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的当前亮度值,M j+1,i为第j+1行第i列子像素10的当前亮度值,M j,i+3为第j行第i+3列子像素10的当前亮度值,M j+1,i+3为第j+1行第i+3列子像素10的当前 亮度值。
具体的,所述步骤S3中,根据与所述第j行第i列子像素10左右相邻的数据线30连接的多个子像素10之间的当前亮度值的差值,以及第j行第i列子像素10的当前亮度值和与该第j行第i列子像素10连接同一条数据线30且位于第j行的子像素10的当前亮度值的差值,通过亮度补偿值计算公式获得第j行第i列子像素10的亮度补偿值。
进一步的,所述步骤S3中,所述亮度补偿值计算公式为:
Figure PCTCN2019092717-appb-000007
其中,Δ j,i为第j行第i列子像素10的亮度补偿值,Δ 1=|M j,i-M j,i+1|,Δ 2=|M j,i+1-M j+1,i-2|,Δ 3=|M j+1,i-2-M j+1,i-1|,Δ 4=|M j+1,i-1-M j+2,i|,Δ 5=|M j+2,i-M j+2,i+1|,Δ 6=|M j,i+2-M j,i+3|,Δ 7=|M j,i+3-M j+1,i|,Δ 8=|M j+1,i-M j+1,i+1|,Δ 9=|M j+1,i+1-M j+2,i+2|,Δ 10=|M j+2,i+2-M j+2,i+3|,M j,i为第j行第i列子像素10的当前亮度值,M j,i+1为第j行第i+1列子像素10的当前亮度值,M j+1,i-2为第j+1行第i-2列子像素10的当前亮度值,M j+1,i-1为第j+1行第i-1列子像素10的当前亮度值,M j+2,i为第j+2行第i列子像素10的当前亮度值,M j+2,i+1为第j+2行第i+1列子像素10的当前亮度值,M j,i+2为第j行第i+2列子像素10的当前亮度值,M j,i+3为第j行第i+3列子像素10的当前亮度值,M j+1,i为第j+1行第i列子像素10的当前亮度值,M j+1,i+1为第j+1行第 i+1列子像素10的当前亮度值,M j+2,i+2为第j+2行第i+2列子像素10的当前亮度值,M j+2,i+3为第j+2行第i+3列子像素10的当前亮度值。此外,亮度补偿值根据重载画面的预处理程度来决定,本发明在此优选n为1到10。
进一步的,当i为1或2时,M j+1,i-2用M j+1,i+4代替,M j+1,i-1用M j+1,i+5代替,其中,M j+1,i+4为第j+1行第i+4列子像素10的当前亮度值,M j+1,i+5为为第j+1行第i+5列子像素10的当前亮度值。
具体的,所述步骤S4中,所述补偿后的亮度值计算公式为:
Figure PCTCN2019092717-appb-000008
其中,NewM j,i为第j行第i列子像素10补偿后的亮度值,ratio为第j行第i列子像素10的亮度补偿值对应的补偿系数。
具体的,所述步骤S5通过输出所有子像素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,所述重载画面为第i列的子像素10的亮度值均大于或等于预设的第一亮度值且第i+1列的子像素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。
通过第1列子像素10为蓝色子像素B,第2列子像素10为绿色子像素G,第3列为红色子像素R,以及输出第1行第1列子像素补偿后的亮度值来举例说明:首先,通过
Figure PCTCN2019092717-appb-000009
获得第1行第1列子像素10的目标亮度值
Figure PCTCN2019092717-appb-000010
再通过
Figure PCTCN2019092717-appb-000011
获得第1行第1列子像素10的亮度补偿值Δ 1,1,其中,Δ 1=|M 1,1-M 1,2|, Δ 2=|M 1,2-M 2,5|,Δ 3=|M 2,5-M 2,6|,Δ 4=|M 2,6-M 3,1|,Δ 5=|M 3,1-M 3,2|,Δ 6=|M 1,3-M 1,4|,Δ 7=|M 1,4-M 2,1|,Δ 8=|M 2,1-M 2,2|,Δ 9=|M 2,2-M 3,3|,Δ 10=|M 3,3-M 3,4|;最后通过
Figure PCTCN2019092717-appb-000012
获得第1行第1列子像素10补偿后的亮度值NewM 1,1,重复上述步骤直至输出所有子像素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,从而在不增加成本的情况下解决重载画面下源极驱动器温度过高的问题。
综上所述,本发明的像素驱动方法通过根据第j行第i列子像素的当前亮度值以及与该第j行第i列子像素相邻的多个相同颜色的子像素的当前亮度值,通过目标亮度值计算公式获得第j行第i列子像素的目标亮度值,再通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值,最后根据第j行第i列子像素的目标亮度值及亮度补偿值,通过补偿后的亮度值计算公式输出第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,从而在不增加成本的情况下解决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 (10)

  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;所述像素驱动电路包括呈阵列排布的多个子像素组;每个子像素组包括两个子像素;所有子像素呈阵列排布;
    步骤S2、根据第j行第i列子像素的当前亮度值以及与该第j行第i列子像素相邻的多个相同颜色的子像素的当前亮度值,通过目标亮度值计算公式获得第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、通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值;
    步骤S4、根据第j行第i列子像素的目标亮度值及亮度补偿值,通过补偿后的亮度值计算公式输出第j行第i列子像素补偿后的亮度值;
    步骤S5、重复步骤S2-S4直至输出所有子像素补偿后的亮度值。
  2. 如权利要求1所述的像素驱动方法,其中,所述像素驱动电路还包括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;每个子像素组中的两个子像素沿水平方向排布;每两条扫描线对应连接一行子像素,其中,一条扫描线连接一行子像素中位于奇数列的子像素,另一条扫描线连接一行子像素中位于偶数列的子像素;每列子像素组分别交错连接到与该列子像素组左右相邻的数据线。
  3. 如权利要求2所述的像素驱动方法,其中,每一列子像素为相同颜色的子像素,且每一行子像素中的每相邻三个子像素分别为红色子像素、绿色子像素和蓝色子像素。
  4. 如权利要求3所述的像素驱动方法,其中,所述步骤S2中,所述目标亮度值计算公式为:
    Figure PCTCN2019092717-appb-100001
    其中
    Figure PCTCN2019092717-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列子像素的当前亮度值,M j+1,i为第j+1行第i列子像素的当前亮度值,M j,i+3为第j行第i+3列子像素的当前亮度值,M j+1,i+3为第j+1行第i+3列子像素的当前亮度值。
  5. 如权利要求4所述的像素驱动方法,其中,所述步骤S3中,根据 与所述第j行第i列子像素左右相邻的数据线连接的多个子像素之间的当前亮度值的差值,以及第j行第i列子像素的当前亮度值和与该第j行第i列子像素连接同一条数据线且位于第j行的子像素的当前亮度值的差值,通过亮度补偿值计算公式获得第j行第i列子像素的亮度补偿值。
  6. 如权利要求5所述的像素驱动方法,其中,所述步骤S3中,所述亮度补偿值计算公式为:
    Figure PCTCN2019092717-appb-100003
    其中,Δ j,i为第j行第i列子像素的亮度补偿值,Δ 1=|M j,i-M j,i+1|,Δ 2=|M j,i+1-M j+1,i-2|,Δ 3=|M j+1,i-2-M j+1,i-1|,Δ 4=|M j+1,i-1-M j+2,i|,Δ 5=|M j+2,i-M j+2,i+1|,Δ 6=|M j,i+2-M j,i+3|,Δ 7=|M j,i+3-M j+1,i|,Δ 8=|M j+1,i-M j+1,i+1|,Δ 9=|M j+1,i+1-M j+2,i+2|,Δ 10=|M j+2,i+2-M j+2,i+3|,M j,i为第j行第i列子像素的当前亮度值,M j,i+1为第j行第i+1列子像素的当前亮度值,M j+1,i-2为第j+1行第i-2列子像素的当前亮度值,M j+1,i-1为第j+1行第i-1列子像素的当前亮度值,M j+2,i为第j+2行第i列子像素的当前亮度值,M j+2,i+1为第j+2行第i+1列子像素的当前亮度值,M j,i+2为第j行第i+2列子像素的当前亮度值,M j,i+3为第j行第i+3列子像素的当前亮度值,M j+1,i为第j+1行第i列子像素的当前亮度值,M j+1,i+1为第j+1行第i+1列子像素的当前亮度值,M j+2,i+2为第j+2行第i+2列子像素的当前亮度值,M j+2,i+3为第j+2行第i+3列子像素的当前亮度值。
  7. 如权利要求6所述的像素驱动方法,其中,当i为1或2时,M j+1,i-2用M j+1,i+4代替,M j+1,i-1用M j+1,i+5代替,其中,M j+1,i+4为第j+1行第i+4列子像素的当前亮度值,M j+1,i+5为为第j+1行第i+5列子像素的当前亮度值。
  8. 如权利要求6所述的像素驱动方法,其中,所述步骤S4中,所述补偿后的亮度值计算公式为:
    Figure PCTCN2019092717-appb-100004
    其中,NewM j,i为第j行第i列子像素补偿后的亮度值,ratio为第j行第i列子像素的亮度补偿值对应的补偿系数。
  9. 如权利要求1所述的像素驱动方法,其中,所述步骤S5通过输出所有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。
  10. 如权利要求9所述的像素驱动方法,其中,所述重载画面为第i列的子像素的亮度值均大于或等于预设的第一亮度值且第i+1列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。
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