WO2018196086A1 - 显示面板的驱动方法及驱动装置 - Google Patents

显示面板的驱动方法及驱动装置 Download PDF

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WO2018196086A1
WO2018196086A1 PCT/CN2017/086229 CN2017086229W WO2018196086A1 WO 2018196086 A1 WO2018196086 A1 WO 2018196086A1 CN 2017086229 W CN2017086229 W CN 2017086229W WO 2018196086 A1 WO2018196086 A1 WO 2018196086A1
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pixel
logical
logical pixel
sub
color
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PCT/CN2017/086229
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English (en)
French (fr)
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田念
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武汉华星光电技术有限公司
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Priority to EP17907405.9A priority Critical patent/EP3618043A4/en
Priority to US16/607,108 priority patent/US10847079B2/en
Priority to JP2019558449A priority patent/JP2020518022A/ja
Priority to KR1020197035229A priority patent/KR102265774B1/ko
Publication of WO2018196086A1 publication Critical patent/WO2018196086A1/zh

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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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/391—Resolution modifying circuits, e.g. variable screen formats
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0421—Horizontal resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0457—Improvement of perceived resolution by subpixel rendering
    • 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 invention relates to the field of display, and in particular to a driving method and a driving device for a display panel.
  • the size of the sub-pixel is getting smaller and smaller, but subject to factors such as the pixel aperture ratio and the manufacturing process, the size of the sub-pixel cannot be reduced indefinitely. It also limits the further improvement of resolution.
  • the industry can further improve the resolution of the display panel by Sub Pixel Rendering (SPR) technology, which realizes the sensory resolution by sharing sub-pixels by adjacent pixel units, thereby having the same
  • SPR Sub Pixel Rendering
  • the sensory resolution of the display panel is increased in the case of sub-pixel arrangement density, or the sub-pixel arrangement density is reduced while maintaining the sensory resolution.
  • the sub-pixels shared by the existing sub-pixel rendering technology are fixed. When the color of the edge region of the image changes rapidly, for example, when displaying the edges of text and lines, the existing sub-pixel rendering technology cannot accurately display the edge regions of the image. Contrast, resulting in distortion in the edge of the image.
  • the present invention provides a driving method and a driving device for a display panel, which can improve the contrast of an image edge region and reduce distortion of an image edge region.
  • a driving method of a display panel includes a plurality of identical pixel units arranged in a matrix, each pixel unit having sub-pixels of three colors of red, green, and blue in a row direction
  • the driving method includes:
  • the luminous intensity of the sub-pixel of the predetermined color is determined according to the following relationship,
  • L is the luminous intensity of the sub-pixel of the predetermined color
  • N is a constant
  • P 2C2 is a color component of a predetermined color in the second logical pixel
  • P mC2 is the first logical pixel or the third logic The color component of the predetermined color in the pixel.
  • a driving method of a display panel includes a plurality of identical pixel units arranged in a matrix, each pixel unit having a plurality of sub-pixels of different colors in a predetermined direction, and the driving method include:
  • each logical pixel group including a first logical pixel and a second sequentially arranged in a predetermined direction a logical pixel and a third logical pixel, the second logical pixel lacking a predetermined color of its adjacent sub-pixel;
  • the illumination intensity of the sub-pixel of the predetermined color is determined according to the color component of the predetermined color in the third logical pixel.
  • a driving device for a display panel includes a plurality of identical pixel units arranged in a matrix, each pixel unit having a plurality of sub-pixels of different colors in a predetermined direction, the driving device include:
  • a processor configured to form one logical pixel by two adjacent sub-pixels in a predetermined direction, thereby dividing the pixel unit in a predetermined direction into a plurality of logical pixel groups, each logical pixel group including a first one arranged in a predetermined direction a logical pixel, a second logical pixel, and a third logical pixel, the second logical pixel lacking a predetermined color of its neighboring sub-pixels;
  • the processor is further configured to acquire a color component of a predetermined color in the first logical pixel, the second logical pixel, and the third logical pixel when the image is displayed;
  • the processor is further configured to calculate a first color component difference value of a predetermined color in the second logic pixel and the first logic pixel, and a second color component difference value of the predetermined color in the second logic pixel and the third logic pixel, and Compare the absolute values of the two;
  • the processor is configured to determine a light emission intensity of the sub-pixel of the predetermined color according to the color component of the predetermined color in the first logical pixel;
  • the processor is configured to determine a light emission intensity of the sub-pixel of the predetermined color according to the color component of the predetermined color in the third logical pixel;
  • the present invention determines sub-pixels shared by the sub-pixel rendering technology by comparing the difference values of the color components, and the sub-pixels shared by the display image are not fixed, and the sub-pixels with the smallest absolute value of the difference of the color components are selected. Sharing, so it can improve the contrast of the image edge area and reduce the distortion of the image edge area.
  • FIG. 1 is a schematic diagram of a pixel structure of a display panel according to an embodiment of the invention.
  • FIG. 2 is a schematic flow chart of a driving method of a display panel according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the arrangement of sub-pixels of the display panel shown in FIG. 1;
  • FIG. 4 is a schematic diagram showing color components of three adjacent logical pixels when the display panel of FIG. 1 displays an edge region of a first image
  • FIG. 5 is a schematic diagram showing color components of three adjacent logical pixels when the display panel of FIG. 1 displays the edge region of the second image;
  • FIG. 6 is a schematic diagram of color components of respective sub-pixels when the first image edge region is displayed based on the driving method of FIG. 2;
  • FIG. 7 is a schematic diagram showing color components of respective sub-pixels when the edge region of the second image is displayed according to the present invention.
  • FIG. 8 is a schematic diagram of color components of respective sub-pixels when an edge region of a second image is displayed using an existing sub-pixel rendering technique
  • FIG. 9 is a schematic diagram of color components of respective sub-pixels when displaying an edge region of a first image by using an existing sub-pixel rendering technique
  • FIG. 10 is a schematic diagram of a pixel structure of a display panel according to another embodiment of the present invention.
  • Figure 11 is a block diagram showing the structure of a driving device for a display panel according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a pixel structure of a display panel according to an embodiment of the invention.
  • the display panel includes a plurality of data lines D x arranged in a column direction, a plurality of scanning lines G y arranged in a row direction, and a plurality of the plurality of scanning lines G y and the plurality of data lines D x defined Pixel unit P x .
  • These pixel units P z may be arranged in a matrix and may be identical in structure and size.
  • each pixel unit Pz may include three sub-pixels, which are a blue sub-pixel B, a red sub-pixel R, and a green sub-pixel G, respectively. Based on this, the sub-pixels of the three colors are alternately arranged in the row direction, that is, the illuminating color of any sub-pixel is different from the illuminating color of the two sub-pixels adjacent in the row direction.
  • the driving method shown in Fig. 2 can drive the display panel.
  • a driving method according to an embodiment of the present invention may include steps S21 to S25.
  • two sub-pixels adjacent in the row direction may be selected to form one logical pixel, and the adjacent two pixel units P z shown in FIG. 3 are taken as an example.
  • the blue sub-pixel B and the red sub-pixel R constitute the first logical pixel.
  • L 1 , the green sub-pixel G and the blue sub-pixel B constitute a second logical pixel L 2 , and the red sub-pixel R and the green sub-pixel G constitute a third logical pixel L 3 .
  • each logical pixel includes only two color sub-pixels, and lacks sub-pixels whose adjacent logical pixels have a color, for example, the second logical pixel L 2 lacks the first logical pixel L 1 and the third logical pixel.
  • L 3 has the red sub-pixel R.
  • the color components of red, green, and blue in the first logical pixel L 1 are (225, 225, 225), and the red color in the second logical pixel L 2 is , green, and blue components of the color (225,225,225), L 3 third logical pixel in the red, green and blue color components (0,0,0).
  • FIG. 5 Another example is shown in Figure 5, when the display panel displays the second image region of an edge, a first logic L 1 pixels of red, green, and blue color components (0,0,0), a second logical pixel in L 2
  • the red, green, and blue color components are (225, 225, 225)
  • the red, green, and blue color components of the third logical pixel L 3 are (225, 225, 225).
  • the red color component P 2C2 in the second logical pixel L 2 is 225
  • the red color component P 1C2 in the first logical pixel L 1 is 225
  • the red color component P 3C2 of the three logical pixels L 3 is 0,
  • the first color component difference P 2C2 - P 1C2 is 0,
  • the second color component difference P 3C2 - P 2C2 is -225
  • is 0, and the absolute value of the second color component difference
  • the red color component P 2C2 in the second logical pixel L 2 is 225
  • the red color component P 1C2 in the first logical pixel L 1 is 0,
  • the red color component P 3C2 of the three logical pixels L 3 is 225
  • the first color component difference P 2C2 -P 1C2 is 225
  • the second color component difference P 3C2 -P 2C2 is 0, and the first color component difference is
  • the light intensity of the red sub-pixel R when the second logical pixel L 2 displays the image is determined according to the color component of the red color in the first logical pixel L 1 , that is, the red sub-pixel R displays the first image edge at the second logical pixel L 2 .
  • Luminous intensity at the time of the area is determined according to the color component of the red color in the first logical pixel L 1 , that is, the red sub-pixel R displays the first image edge at the second logical pixel L 2 .
  • the luminous intensity of the red sub-pixel R can be determined by the following relationship:
  • L is the luminous intensity of the red sub-pixel R
  • N is a constant
  • P 2C2 is the red color component of the second logical pixel L 2
  • P mC2 is the red color component of the logical pixel having the smallest absolute value.
  • P mC2 is a red color component in the first logical pixel L 1 .
  • the luminous intensity L of the red sub-pixel R obtained in this embodiment is 225, as shown in FIG. 6, but the red sub-pixel R of the luminous intensity is located at the second logical pixel L 2 away from the third.
  • the luminous intensity of the red sub-pixel R is still 0, so that the contrast of the edge region of the first image can be accurately displayed To avoid distortion in the edge area of the first image.
  • the luminous intensity of the red sub-pixel R when the second logical pixel L 2 is displayed is determined according to the color component of red in the third logical pixel L 3 .
  • the luminous intensity L of the red sub-pixel R is 225 according to the above relation (1), as shown in FIG. 7, but the red sub-pixel R of the luminous intensity is located at the second logical pixel L 2 away from the first logical pixel.
  • the luminous intensity of the red sub-pixel R is still 0, so that the contrast of the edge region of the second image can be accurately displayed, avoiding Distortion occurs in the edge region of the second image.
  • the existing sub-pixel rendering technology is used to drive the display panel.
  • the red sub-pixel R of the first logical pixel L 1 is fixedly selected as the shared sub-pixel of the second logical pixel L 2
  • the second logical pixel L 2 is adjacent to the third logical pixel L 3
  • the red sub-pixel R has an emission intensity of 0.
  • the contrast of the edge region of the first image can be accurately displayed to avoid distortion.
  • the red sub-pixel R has an illumination intensity of 127, as shown in FIG. 8 , resulting in the second image edge. Color aliasing occurs in the area, and contrast distortion occurs.
  • the red sub-pixel R of the third logical pixel L 3 is fixedly selected as the shared sub-pixel of the second logical pixel L 2
  • the second logical pixel L 2 is adjacent to the third logical pixel L 3
  • the red sub-pixel R has an illumination intensity of 127, as shown in FIG. 9, resulting in color aliasing in the edge region of the second image, and contrast distortion occurs.
  • the light emission intensity of the red sub-pixel R 0 is shown in Figure 7, the first image can be displayed accurately Contrast in the edge area to avoid distortion.
  • the present invention determines the sub-pixels shared by the sub-pixel rendering technology by comparing the difference values of the color components, and the sub-pixels shared by the display image are not fixed, and the sub-pixels with the smallest absolute value of the color component difference are selected. Sharing, so it can improve the contrast of the image edge area and reduce the distortion of the image edge area.
  • the present invention is applicable not only to the display panel of the RGB Stripe type pixel structure shown in FIG. 1, but also to the display panel having the RGB Delta type pixel structure shown in FIG. Referring to FIG. 10, the blue sub-pixel B, the red sub-pixel R, and the green sub-pixel G, the sub-pixels of the three colors are also alternately arranged in the row direction.
  • the present invention can still select two sub-pixels adjacent in the row direction to constitute the first logic pixel L 1 , the second logic pixel L 2 and the third logic pixel L 3 , respectively .
  • the invention also provides a driving device for a display panel.
  • the drive device 110 includes a processor 111 and a drive 112 coupled to the processor 111.
  • the processor 111 is configured to form one logical pixel by two adjacent sub-pixels in a predetermined direction, thereby dividing the pixel unit in a predetermined direction into a plurality of logical pixel groups, each logical pixel group including a first one arranged in a predetermined direction.
  • the processor 111 is further configured to acquire a color component of a predetermined color in the first logical pixel, the second logical pixel, and the third logical pixel when the image is displayed.
  • the processor 111 is further configured to calculate a first color component difference value of a predetermined color in the second logic pixel and the first logic pixel, and a second color component difference value of the predetermined color in the second logic pixel and the third logic pixel, and compare The absolute value of both.
  • the processor 111 is configured to determine the illumination intensity of the sub-pixel of the predetermined color according to the color component of the predetermined color in the first logical pixel.
  • the processor 111 is configured to determine the illumination intensity of the sub-pixel of the predetermined color according to the color component of the predetermined color in the third logical pixel.
  • the driver 112 is configured to drive the sub-pixels of the predetermined color to emit light of the luminous intensity determined by the processor 111 when the second logical pixel is displayed.
  • the structural elements of the driving device 110 of the present embodiment correspond to the driving method of the above embodiment, and have the same technical effects.

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Abstract

一种显示面板的驱动方法及驱动装置，通过比较颜色分量的差值来确定子像素渲染技术所共享的子像素，显示图像所共享的子像素并非固定的，由于选取颜色分量的差值的绝对值最小的子像素进行共享，因此能够改善图像边缘区域的对比度，减轻图像边缘区域的失真现象。

Description

显示面板的驱动方法及驱动装置 【技术领域】
本发明涉及显示领域，具体涉及一种显示面板的驱动方法及驱动装置。
【背景技术】
为了提高显示面板的子像素排布密度以提升分辨率，子像素的尺寸越来越小，但受制于像素开口率和制作工艺等因素限制，子像素的尺寸不可能无限制的减小，这又限制了分辨率的进一步提升。当前，业界可以采用子像素渲染(Sub Pixel Rendering，SPR)技术进一步提升显示面板的分辨率，该子像素渲染技术通过相邻像素单元共享子像素的方法实现感官分辨率的提升，从而在具有相同子像素排布密度的情况下提高显示面板的感官分辨率，或者说，在保持感官分辨率不变的情况下降低了对子像素排布密度的要求。但是，现有子像素渲染技术所共享的子像素是固定的，当图像边缘区域的颜色变化较快，例如显示文字、线条的边缘时，采用现有子像素渲染技术不能准确地展示图像边缘区域的对比度，导致图像边缘区域出现失真现象。
【发明内容】
有鉴于此，本发明提供一种显示面板的驱动方法及驱动装置，能够改善图像边缘区域的对比度，减轻图像边缘区域的失真现象。
本发明一实施例的显示面板的驱动方法，所述显示面板包括呈矩阵排布的多个相同的像素单元，每一像素单元在行方向上具有红色、绿色和蓝色这三种颜色的子像素，所述驱动方法包括：
以行方向上相邻两个子像素组成一个逻辑像素，从而将行方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿行方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，所述第二逻辑像素缺少其相邻子像素所具有的预定颜色；
获取用于显示图像时第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量；
计算第二逻辑像素和第一逻辑像素中预定颜色的第一颜色分量差值，以及所述第二逻辑像素和第三逻辑像素中预定颜色的第二颜色分量差值，并比较两者的绝对值；
当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，根据第一逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度；
当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，根据第三逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时预定颜色的子像素的发光强度；
其中，根据以下关系式确定预定颜色的子像素的发光强度，
L＝N*(P2C2+PmC2)
其中，L为所述预定颜色的子像素的发光强度，N为常量，P2C2为所述第二逻辑像素中预定颜色的颜色分量，PmC2为所述第一逻辑像素或所述第三逻辑像素中预定颜色的颜色分量。
本发明一实施例的显示面板的驱动方法，所述显示面板包括呈矩阵排布的多个相同的像素单元，每一像素单元在预定方向上具有多个不同颜色的子像素，所述驱动方法包括：
以预定方向上相邻两个子像素组成一个逻辑像素，从而将预定方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿预定方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，第二逻辑像素缺少其相邻子像素所具有的预定颜色；
获取用于显示图像时所述第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量；
计算第二逻辑像素和第一逻辑像素中预定颜色的第一颜色分量差值，以及第二逻辑像素和第三逻辑像素中预定颜色的第二颜色分量差值，并比较两者的绝对值；
当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，根据第一逻辑像素中预定颜色的颜色分量确定预定颜色的子像素的发光强度；
当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，根 据第三逻辑像素中预定颜色的颜色分量确定预定颜色的子像素的发光强度。
本发明一实施例的显示面板的驱动装置，所述显示面板包括呈矩阵排布的多个相同的像素单元，每一像素单元在预定方向上具有多个不同颜色的子像素，所述驱动装置包括：
处理器，用于以预定方向上相邻两个子像素组成一个逻辑像素，从而将预定方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿预定方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，第二逻辑像素缺少其相邻子像素所具有的预定颜色；
所述处理器还用于获取用于显示图像时第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量；
所述处理器进一步用于计算第二逻辑像素和第一逻辑像素中预定颜色的第一颜色分量差值，以及第二逻辑像素和第三逻辑像素中预定颜色的第二颜色分量差值，并比较两者的绝对值；
当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，处理器用于根据第一逻辑像素中预定颜色的颜色分量确定预定颜色的子像素的发光强度；
当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，处理器用于根据第三逻辑像素中预定颜色的颜色分量确定预定颜色的子像素的发光强度；
驱动器，用于驱动预定颜色的子像素在第二逻辑像素显示时发出处理器确定的发光强度的光。
有益效果：本发明通过比较颜色分量的差值来确定子像素渲染技术所共享的子像素，显示图像所共享的子像素并非固定的，由于选取颜色分量的差值的绝对值最小的子像素进行共享，因此能够改善图像边缘区域的对比度，减轻图像边缘区域的失真现象。
【附图说明】
图1是本发明一实施例的显示面板的像素结构示意图；
图2是本发明一实施例的显示面板的驱动方法的流程示意图；
图3是图1所示显示面板的子像素的排布示意图；
图4是图1所示显示面板显示第一图像边缘区域时三个相邻逻辑像素的颜色分量示意图；
图5是是图1所示显示面板显示第二图像边缘区域时三个相邻逻辑像素的颜色分量示意图；
图6是基于图2所述驱动方法显示第一图像边缘区域时各个子像素的颜色分量示意图；
图7是本发明显示第二图像边缘区域时各个子像素的颜色分量示意图；
图8是采用现有子像素渲染技术显示第二图像边缘区域时各个子像素的颜色分量示意图；
图9是采用现有子像素渲染技术显示第一图像边缘区域时各个子像素的颜色分量示意图；
图10是本发明另一实施例的显示面板的像素结构示意图；
图11是本发明一实施例的显示面板的驱动装置的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明所提供的各个示例性的实施例的技术方案进行清楚、完整地描述。在不冲突的情况下，下述各个实施例及其技术特征可以相互组合。
请参阅图1，为本发明一实施例的显示面板的像素结构示意图。所述显示面板包括沿列方向排布的多条数据线Dx、沿行方向排布的多条扫描线Gy、以及由多条扫描线Gy和多条数据线Dx定义的多个像素单元Px。这些像素单元Pz可以呈矩阵排布，并且其结构和尺寸可以完全相同。结合图3所示，在行方向上，每一个像素单元Pz可以包括三个子像素，分别为蓝色子像素B、红色子像素R和绿色子像素G。基于此，这三种颜色的子像素在行方向上依次交替排布，即，任一子像素的发光颜色与其在行方向上相邻的两个子像素的发光颜色均不一样。
图2所示驱动方法可以对显示面板进行驱动。请参阅图2，本发明一实施例的驱动方法可以包括步骤S21～S25。
S21：以预定方向上相邻两个子像素组成一个逻辑像素，从而将预定方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿预定方向 依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，第二逻辑像素缺少其相邻子像素所具有的预定颜色。
本实施例可以选取行方向上相邻的两个子像素构成一个逻辑像素，以图3所示的相邻两个像素单元Pz为例，蓝色子像素B和红色子像素R构成第一逻辑像素L1，绿色子像素G和蓝色子像素B构成第二逻辑像素L2，红色子像素R和绿色子像素G构成第三逻辑像素L3。
其中，每一个逻辑像素都只包括两种颜色的子像素，而缺少其相邻逻辑像素所具有颜色的子像素，例如，第二逻辑像素L2缺少第一逻辑像素L1和第三逻辑像素L3所具有的红色子像素R。
S22：获取用于显示图像时所述第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量。
例如图4所示，当显示面板显示第一图像边缘区域时，第一逻辑像素L1中红色、绿色、蓝色的颜色分量为(225，225，225)，第二逻辑像素L2中红色、绿色、蓝色的颜色分量为(225，225，225)，第三逻辑像素L3中红色、绿色、蓝色的颜色分量为(0，0，0)。
又例如图5所示，当显示面板显示第二图像边缘区域时，第一逻辑像素L1中红色、绿色、蓝色的颜色分量为(0，0，0)，第二逻辑像素L2中红色、绿色、蓝色的颜色分量为(225，225，225)，第三逻辑像素L3中红色、绿色、蓝色的颜色分量为(225，225，225)。
S23：计算第二逻辑像素和第一逻辑像素中预定颜色的第一颜色分量差值，以及第二逻辑像素和第三逻辑像素中预定颜色的第二颜色分量差值，并比较两者的绝对值。
以红色为预定颜色为例，
当显示面板显示如图4所示的第一图像边缘区域时，第二逻辑像素L2中红色的颜色分量P2C2为225，第一逻辑像素L1中红色的颜色分量P1C2为225，第三逻辑像素L3中红色的颜色分量P3C2为0，则第一颜色分量差值P2C2-P1C2为0，第二颜色分量差值P3C2-P2C2为-225，第一颜色分量差值的绝对值|P2C2-P1C2|为0，第二颜色分量差值的绝对值|P3C2-P2C2|为225。
当显示面板显示如图5所示的第二图像边缘区域时，第二逻辑像素L2中红色的颜色分量P2C2为225，第一逻辑像素L1中红色的颜色分量P1C2为 0，第三逻辑像素L3中红色的颜色分量P3C2为225，则第一颜色分量差值P2C2-P1C2为225，第二颜色分量差值P3C2-P2C2为0，第一颜色分量差值的绝对值|P2C2-P1C2|为225，第二颜色分量差值的绝对值|P3C2-P2C2|为0。
S24：当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，根据第一逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时预定颜色的子像素的发光强度。
当显示面板显示第一图像边缘区域时，由于第一颜色分量差值的绝对值小于第二颜色分量差值的绝对值，即
|P2C2-P1C2|＜|P3C2-P2C2|
本实施例根据第一逻辑像素L1中红色的颜色分量确定第二逻辑像素L2显示图像时红色子像素R的发光强度，即红色子像素R在第二逻辑像素L2显示第一图像边缘区域时的发光强度。
本实施例可以通过以下关系式确定红色子像素R的发光强度：
L＝N*(P2C2+PmC2)……关系式(1)
其中，L为红色子像素R的发光强度，N为常量，P2C2为第二逻辑像素L2中红色的颜色分量，PmC2为绝对值最小的逻辑像素中红色的颜色分量。此时，PmC2为第一逻辑像素L1中红色的颜色分量。
当N取值为1/2时，本实施例得到红色子像素R的发光强度L为225，如图6所示，但该发光强度的红色子像素R位于第二逻辑像素L2远离第三逻辑像素L3的一侧，而在第二逻辑像素L2邻近第三逻辑像素L3的一侧，红色子像素R的发光强度仍为0，从而能够准确地显示第一图像边缘区域的对比度，避免第一图像边缘区域出现失真现象。
S25：当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，根据第三逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时预定颜色的子像素的发光强度。
当显示面板显示第二图像边缘区域时，由于第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值，即
|P2C2-P1C2|＞|P3C2-P2C2|
本实施例根据第三逻辑像素L3中红色的颜色分量确定第二逻辑像素L2显示时红色子像素R的发光强度。
本实施例可根据上述关系式(1)得到红色子像素R的发光强度L为225，如图7所示，但该发光强度的红色子像素R位于第二逻辑像素L2远离第一逻辑像素L1的一侧，而在第二逻辑像素L2邻近第一逻辑像素L1的一侧，红色子像素R的发光强度仍为0，从而能够准确地显示第二图像边缘区域的对比度，避免第二图像边缘区域出现失真现象。
而采用现有子像素渲染技术对显示面板进行驱动，
如果固定选取第一逻辑像素L1的红色子像素R作为第二逻辑像素L2的共享子像素，在显示第一图像边缘区域时，在第二逻辑像素L2邻近第三逻辑像素L3的一侧，红色子像素R的发光强度为0，如图6所示，能够准确地显示第一图像边缘区域的对比度，避免出现失真现象。但是，在显示第二图像边缘区域时，在第二逻辑像素L2邻近第一逻辑像素L1的一侧，红色子像素R的发光强度为127，如图8所示，导致第二图像边缘区域出现颜色混叠，出现对比度失真现象。
而如果固定选取第三逻辑像素L3的红色子像素R作为第二逻辑像素L2的共享子像素，在显示第一图像边缘区域时，在第二逻辑像素L2邻近第三逻辑像素L3的一侧，红色子像素R的发光强度为127，如图9所示，导致第二图像边缘区域出现颜色混叠，出现对比度失真现象。在显示第二图像边缘区域时，在第二逻辑像素L2邻近第一逻辑像素L1的一侧，红色子像素R的发光强度为0，如图7所示，能够准确地显示第一图像边缘区域的对比度，避免出现失真现象。
由此可见，本发明通过比较颜色分量的差值来确定子像素渲染技术所共享的子像素，显示图像所共享的子像素并非固定的，由于选取颜色分量差值的绝对值最小的子像素进行共享，因此能够改善图像边缘区域的对比度，减轻图像边缘区域的失真现象。
本发明不仅适用于图1所示的RGB Stripe类型像素结构的显示面板，还可以适用于图10所示的具有RGB Delta类型像素结构的显示面板。请参阅图10，蓝色子像素B、红色子像素R和绿色子像素G，这三种颜色的子像素在行方向上也是依次交替排布。对于本实施例的像素结构，本发明仍然可以选取行方向上相邻的两个子像素分别构成上述第一逻辑像素L1、第二逻辑像素L2和第三逻辑像素L3。
本发明还提供一种显示面板的驱动装置。如图11所示，所述驱动装置110包括处理器111以及与处理器111连接的驱动器112。
处理器111用于以预定方向上相邻两个子像素组成一个逻辑像素，从而将预定方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿预定方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，第二逻辑像素缺少其相邻子像素所具有的预定颜色。
处理器111还用于获取用于显示图像时第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量。
处理器111进一步用于计算第二逻辑像素和第一逻辑像素中预定颜色的第一颜色分量差值，以及第二逻辑像素和第三逻辑像素中预定颜色的第二颜色分量差值，并比较两者的绝对值。
当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，处理器111用于根据第一逻辑像素中预定颜色的颜色分量确定预定颜色的子像素的发光强度。
当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，处理器111用于根据第三逻辑像素中预定颜色的颜色分量确定预定颜色的子像素的发光强度。
驱动器112用于驱动预定颜色的子像素在第二逻辑像素显示时发出处理器111确定的发光强度的光。
本实施例的驱动装置110的结构元件对应执行上述实施例的驱动方法，具有与其相同的技术效果。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (12)

  1. 一种显示面板的驱动方法，其中，所述显示面板包括呈矩阵排布的多个相同的像素单元，每一所述像素单元在行方向上具有红色、绿色和蓝色这三种颜色的子像素，所述驱动方法包括：
    以所述行方向上相邻两个子像素组成一个逻辑像素，从而将所述行方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿行方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，所述第二逻辑像素缺少其相邻子像素所具有的预定颜色；
    获取用于显示图像时所述第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量；
    计算所述第二逻辑像素和第一逻辑像素中所述预定颜色的第一颜色分量差值，以及所述第二逻辑像素和第三逻辑像素中所述预定颜色的第二颜色分量差值，并比较两者的绝对值；
    当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，根据第一逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度；
    当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，根据第三逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度；
    其中，根据以下关系式确定所述预定颜色的子像素的发光强度，
    L＝N*(P2C2+PmC2)
    其中，L为所述预定颜色的子像素的发光强度，N为常量，P2C2为所述第二逻辑像素中预定颜色的颜色分量，PmC2为所述第一逻辑像素或所述第三逻辑像素中预定颜色的颜色分量。
  2. 根据权利要求1所述的驱动方法，其中，N＝1/2。
  3. 一种显示面板的驱动方法，其中，所述显示面板包括呈矩阵排布的多个相同的像素单元，每一所述像素单元在预定方向上具有多个不同颜色的子像素，所述驱动方法包括：
    以所述预定方向上相邻两个子像素组成一个逻辑像素，从而将所述预 定方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿预定方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像素，所述第二逻辑像素缺少其相邻子像素所具有的预定颜色；
    获取用于显示图像时所述第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量；
    计算所述第二逻辑像素和第一逻辑像素中所述预定颜色的第一颜色分量差值，以及所述第二逻辑像素和第三逻辑像素中所述预定颜色的第二颜色分量差值，并比较两者的绝对值；
    当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，根据第一逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度；
    当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，根据第三逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度。
  4. 根据权利要求3所述的驱动方法，其中，所述预定方向包括行方向。
  5. 根据权利要求3所述的驱动方法，其中，每一所述像素单元包括三种不同颜色的子像素，分别为红色、绿色和蓝色。
  6. 根据权利要求3所述的驱动方法，其中，根据以下关系式确定所述预定颜色的子像素的发光强度，
    L＝N*(P2C2+PmC2)
    其中，L为所述预定颜色的子像素的发光强度，N为常量，P2C2为所述第二逻辑像素中预定颜色的颜色分量，PmC2为所述第一逻辑像素或所述第三逻辑像素中预定颜色的颜色分量。
  7. 根据权利要求6所述的驱动方法，其中，N＝1/2。
  8. 一种显示面板的驱动装置，其中，所述显示面板包括呈矩阵排布的多个相同的像素单元，每一所述像素单元在预定方向上具有多个不同颜色的子像素，所述驱动装置包括：
    处理器，用于以所述预定方向上相邻两个子像素组成一个逻辑像素，从而将所述预定方向上的像素单元划分为多个逻辑像素组，每一逻辑像素组包括沿预定方向依次排布的第一逻辑像素、第二逻辑像素和第三逻辑像 素，所述第二逻辑像素缺少其相邻子像素所具有的预定颜色；
    所述处理器，还用于获取用于显示图像时所述第一逻辑像素、第二逻辑像素和第三逻辑像素中预定颜色的颜色分量；
    所述处理器，进一步用于计算所述第二逻辑像素和第一逻辑像素中所述预定颜色的第一颜色分量差值，以及所述第二逻辑像素和第三逻辑像素中所述预定颜色的第二颜色分量差值，并比较两者的绝对值；
    当第一颜色分量差值的绝对值小于或等于第二颜色分量差值的绝对值时，所述处理器用于根据第一逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度；
    当第一颜色分量差值的绝对值大于第二颜色分量差值的绝对值时，所述处理器用于根据第三逻辑像素中预定颜色的颜色分量确定第二逻辑像素显示图像时所述预定颜色的子像素的发光强度；
    驱动器，用于驱动所述预定颜色的子像素在所述第二逻辑像素显示时发出所述处理器确定的发光强度的光。
  9. 根据权利要求8所述的驱动装置，其中，所述预定方向包括行方向。
  10. 根据权利要求8所述的驱动装置，其中，每一所述像素单元包括三种不同颜色的子像素，分别为红色、绿色和蓝色。
  11. 根据权利要求8所述的驱动装置，其中，所述处理器根据以下关系式确定所述预定颜色的子像素的发光强度，
    L＝N*(P2C2+PmC2)
    其中，L为所述预定颜色的子像素的发光强度，N为常量，P2C2为所述第二逻辑像素中预定颜色的颜色分量，PmC2为所述第一逻辑像素或所述第三逻辑像素中预定颜色的颜色分量。
  12. 根据权利要求11所述的驱动装置，其中，N＝1/2。
PCT/CN2017/086229 2017-04-28 2017-05-27 显示面板的驱动方法及驱动装置 WO2018196086A1 (zh)

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