WO2016150041A1 - 像素排列方法、像素渲染方法及图像显示装置 - Google Patents

像素排列方法、像素渲染方法及图像显示装置 Download PDF

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Publication number
WO2016150041A1
WO2016150041A1 PCT/CN2015/084418 CN2015084418W WO2016150041A1 WO 2016150041 A1 WO2016150041 A1 WO 2016150041A1 CN 2015084418 W CN2015084418 W CN 2015084418W WO 2016150041 A1 WO2016150041 A1 WO 2016150041A1
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Prior art keywords
pixels
sub
pixel
structural unit
rwb
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PCT/CN2015/084418
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English (en)
French (fr)
Inventor
周莉
李重君
王延峰
江峰
王龙
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to EP15885977.7A priority Critical patent/EP3276598A4/en
Priority to US15/320,421 priority patent/US9886884B2/en
Publication of WO2016150041A1 publication Critical patent/WO2016150041A1/zh
Anticipated expiration legal-status Critical
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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
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • 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
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or 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
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • 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

Definitions

  • the present invention relates to an image display technology, and more particularly to various display pixel arrangement methods and sub-pixel rendering display technologies.
  • the sub-pixel density is getting higher and higher, causing the aperture ratio of the sub-pixel to drop sharply, and the white sub-pixel is used to increase the transmittance of the panel.
  • too many white pixels may cause chromatic aberration, which affects the display of the picture. quality.
  • the present disclosure starts from the arrangement of the pixel structure, and designs a new pixel arrangement method which can improve the pixel density and reduce the power consumption, and combines the corresponding algorithm arrangement and color film process technology to realize a high color gamut. Low power consumption display, thereby appropriately mitigating or eliminating at least one of the above technical problems.
  • the present disclosure proposes a low power consumption, high resolution pixel arrangement and sub-pixel rendering method, which is implemented by, for example, R2G2B2W (such as RG BG RWB, GB WR BGR) or R2G1B2W2 (such as RWBG RWB).
  • R2G2B2W such as RG BG RWB, GB WR BGR
  • R2G1B2W2 such as RWBG RWB
  • R2G1B2W2 such as RWBG RWB
  • R2G1B2W2 such as RWBG RWB
  • a pixel arrangement method includes: a repeating unit composed of a first structural unit and a second structural unit, wherein the first structural unit and the second structural unit are repeatedly arranged in a horizontal direction, respectively a structural unit and a second structural unit are arranged in a vertical direction; the first structural unit and the second structural unit respectively comprise 7 sub- a pixel, the 7 sub-pixels including 2 first color sub-pixels, 2 second color sub-pixels, 2 third color sub-pixels, and 1 fourth color sub-pixel; or 2 first color sub-pixels, 1 Two second color sub-pixels, two third color sub-pixels, and two fourth color sub-pixels.
  • the resolution can be improved while reducing power consumption.
  • the first color sub-pixel is a red sub-pixel R
  • the second color sub-pixel is a green sub-pixel G
  • the third color sub-pixel is a blue sub-pixel B
  • the fourth color sub-pixel is a white sub-pixel W.
  • the missing sub-pixel colors in each of the first structural unit and the second structural unit are borrowed from adjacent pixels, and the fourth color sub-pixel is three pixels constituting the first structural unit or the second structural unit. Share.
  • the transmittance of the display can be improved to better restore the image.
  • the pixels of the first structural unit and the second structural unit are respectively composed of two first color sub-pixels, two second color sub-pixels, two third color sub-pixels, and one fourth color sub-pixel. Combined. According to this embodiment, the image resolution can be improved while reducing power consumption and providing better image quality.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RGBG RWB+BGRW BGR, wherein three pixels of the first structural unit are RG, BG, RWB, and three of the second structural unit The pixels are BG, RWB, and GR.
  • the display effect can be finely adjusted according to actual needs.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RGBG RWB+GBWR BGR, wherein three pixels of the first structural unit are RG, BG, RWB, and three of the second structural unit
  • the pixels are GB, WRB, and GR.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RG BWR GB+RG BWR GB, wherein the first structural unit and the second structural unit each include three pixels RG, BWR, GB , or each includes two RGB pixels.
  • the display effect can be finely adjusted according to actual needs.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RG BWR GB+BG RWB GR, wherein three pixels of the first structural unit are RG, BWR, GB, and the second structural unit The three pixels are BG, RWB, GR; or
  • the first structural unit includes two RGB pixels, and the second structural unit includes two BGR pixels.
  • the pixels of the first structural unit and the second structural unit are respectively combined by two first color sub-pixels, one second color sub-pixel, two third color sub-pixels, and two fourth color sub-pixels. to make.
  • the resolution can be improved while the power consumption is reduced, the existing process is better compatible, and the algorithm is simple to implement.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RWBG RWB+BWRG BWR, wherein three pixels of the first structural unit are RW, BG, RWB, and three of the second structural unit
  • the pixels are BW, RG, BWR; or expressed as two pixels, and the two pixels contain RGB sub-pixels as much as possible, and if not, borrow missing pixels from adjacent pixels.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RWBG RWB+RWBG RWB, wherein three pixels of the first structural unit are RW, BG, RWB, and three of the second structural unit The pixels are RW, BG, RWB.
  • the repeating unit pixel structure arrangement formed by the first structural unit and the second structural unit may be selected from any one of the following: RGBW RWB+RGBW RWB, RWBW RGB+RWBW RGB, RGBW RWB+BGRW BWR, RWBW RGB+ BWRW BGR, RGBW RWB+RWBG RWB, RGBW RWB+RWBG RWB.
  • the positions of the red sub-pixel R and the blue sub-pixel B may be interchanged, and the positions of the green sub-pixel G and the white sub-pixel W may be interchanged.
  • the display effect can be finely adjusted according to actual needs.
  • the pixels of the first structural unit are composed of two first color sub-pixels, two second color sub-pixels, two third color sub-pixels, and one fourth color sub-pixel; the second structural unit The pixels are composed of two first color sub-pixels, one second color sub-pixel, two third color sub-pixels, and two fourth color sub-pixels.
  • the image resolution can be improved while the power consumption is reduced; the picture quality is optimal, and the picture color is balanced.
  • the repeating unit pixel structure arrangement formed by the first structural unit and the second structural unit may be selected from any one of the following: RGBG RWB+BWRW BGR, RGBG RWB+WBWR BGR, RGBG RWB+RWBW RGB, RGBW RGB+ BWRG BWR. According to the above embodiment, the display effect can be finely adjusted.
  • the area of each of the G and W sub-pixels may be 1/2 of the area of any other sub-pixel. According to this embodiment, the problem that the brightness of the white sub-pixel is too high can be balanced.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RG 1/2 BG 1/2 RWB+BW 1/2 RW 1/2 BGR, wherein W 1/2 , G 1 /2 denotes a white sub-pixel or a green sub-pixel whose area is 1/2 of the area of any other sub-pixel.
  • W 1/2 , G 1 /2 denotes a white sub-pixel or a green sub-pixel whose area is 1/2 of the area of any other sub-pixel.
  • the repeating unit pixel structure composed of the first structural unit and the second structural unit is arranged as RG 1/2 BG 1/2 RWB+W 1/2 BW 1/2 R BGR. According to this embodiment, the zigzag distortion can be avoided, the color reproducibility is good, and the image is more uniform.
  • the repeating unit pixel structure arrangement formed by the first structural unit and the second structural unit may be any one of the following: RG 1/2 G 1/2 B RWB+BW 1/2 W 1/2 R BGR, RG 1/2 G 1/2 B RWB+W 1/2 W 1/2 BR BGR.
  • the repeating unit pixel structure arrangement formed by the first structural unit and the second structural unit may also be any one of the following: RG 1/2 BG 1/2 RW 1/2 B+BW 1/2 RW 1/ 2 BG 1/2 R, RG 1/2 BG 1/2 RW 1/2 B+W 1/2 BW 1/2 R BG 1/2 R.
  • first structural unit and the second structural unit may also be expressed as two pixels, respectively, and the two pixels include RGB sub-pixels as much as possible, and if not, the missing sub-pixels are borrowed from adjacent pixels.
  • the sub-pixel positions included in each pixel are interchangeable.
  • a high color gamut photoluminescent color film material such as a quantum dot is used, thereby solving the problem of chromatic aberration which may be caused by the addition of white sub-pixels.
  • the W sub-pixels in all the pixel arrangement structures may be replaced by any one of the yellow sub-pixel Y, the cyan sub-pixel C or the magenta sub-pixel M, thereby achieving a richer display effect.
  • a seed pixel rendering method comprising:
  • a seed pixel rendering method including:
  • G 1 ' g(G 1 *, G 2 *, G3*);
  • the image resolution can be improved while reducing the power consumption to optimize the display effect.
  • an image display device is provided, the pixel arrangement of which is arranged in accordance with any of the repeating unit pixel structure arrangements included in the embodiments of the present application.
  • Embodiments of the present invention are primarily used in high resolution display devices.
  • Embodiments of the present invention combine the advantages of RGBG RWB and RGBW RGB pixel arrangement, and optimize the sub-pixel size, arrangement, and pixel allocation according to color and color gamut optimal matching, thereby achieving significant power consumption reduction and color gamut improvement. And the purpose of reducing process pressure.
  • FIG. 1(A)-1(D) are diagrams showing the arrangement of R2G2B2W pixel structures according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing a R2G2B2W pixel structure arrangement calculation method according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing a flow chart of a R2G2B2W pixel structure arrangement calculation method according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing the arrangement of R2G1B2W2 pixel structures according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram showing a R2G1B2W2 pixel structure arrangement calculation method according to an embodiment of the present invention
  • FIG. 6 is a block diagram showing a flow chart of a R2G1B2W2 pixel structure arrangement calculation method according to an embodiment of the present invention
  • FIGS. 7(A)-(D) are diagrams showing the arrangement of R2G2B2W+R2G1B2W2 pixel structures according to an embodiment of the present invention
  • FIGS 8(A)-(F) are diagrams showing the arrangement of R2G 1/2 2B2W+R2G1B2W 1/2 2 pixels according to an embodiment of the present invention.
  • a pixel also known as a pixel, is the basic unit of image display.
  • Each pixel on a typical LCD panel consists of three primary colors of red, blue, and green (RGB), usually each color on each pixel.
  • RGB red, blue, and green
  • a "subpixel" The display screen is made up of a large number of pixels, and in order for each individual pixel to display various colors, it needs to be decomposed into three sub-pixels, for example, red, green and blue, one pixel lower than the pixel. That is to say, for example, three sub-pixels constitute a whole, that is, color pixels.
  • the three sub-pixels respectively emit light with different brightnesses, and since the sub-pixels are very small in size, they are visually mixed into a desired color.
  • the embodiments described in the present invention describe the pixel arrangement structure of the embodiment of the present invention by taking the sub-pixels (R, G, B) of three colors of red, green and blue as an example.
  • the W sub-pixels may each be replaced by a yellow sub-pixel Y, a cyan sub-pixel C, or a magenta sub-pixel M.
  • R2G2B2W indicates a pixel structure arrangement composed of two red sub-pixels, two green sub-pixels, two blue sub-pixels, and one white sub-pixel of seven sub-pixels.
  • the pixel structure arrangement is composed of RGBG RWB+BGRW BGR, which represents that a structural unit RGBG RWB is combined with another structural unit BGRW BGR to form a repeating structural unit, wherein The symbol "+” indicates a combination of two arrangement structures.
  • RG, BG, RWB, BG, RWB, and GR respectively represent one pixel, that is, R2B2G2W collectively expresses three pixels.
  • the pixel rendering algorithm of the RGBG RWB structure may borrow B sub-pixels from neighboring neighboring pixels (such as BG pixels) for the RG pixel, BG pixels borrow the sub-pixel R of the RG pixel, and the RWB pixel borrows surrounding neighboring pixels (eg, G sub-pixels in RG, BG pixels).
  • BG, RWB, and GR in the BGRW BGR pixel arrangement structure respectively represent three pixels, and each other borrows missing sub-pixels, and the white sub-pixel W is shared by three sub-pixels; or the BGRW BGR arrangement can also be replaced by BWRG BGR.
  • BWR GB
  • GR GR
  • the pixel arrangement structure is composed of RG BG RWB+GB WRB GR repeating units.
  • the G in the embodiment of FIG. 1(A) is used.
  • RG BG RWB For three pixel units, the missing sub-pixels are borrowed from each other to the surrounding pixels, and GB, WRB, and GR are three pixel units, and the W sub-pixels are shared by three pixel units.
  • the pixel arrangement structure is composed of RG BWR GB+RG BWR GB repeating units, wherein RG BWR GB is three pixel units, and sub-pixels are borrowed from each other, and W sub-pixels are three pixels. Share.
  • the pixel arrangement structure may also be expressed as only two pixels, that is, two RGB repetition units of RGB W RGB respectively express two pixels, and the W sub-pixels are shared by two pixels.
  • the pixel arrangement repeating unit may be RGB W RGB+BGR W BGR, as shown in FIG. 1(D), and the pixel arrangement structure is the same as above, and details are not described herein again.
  • FIG. 2 is a schematic diagram of a R2G2B2W pixel structure arrangement calculation method according to an embodiment of the invention.
  • the basic calculation method is to use two red sub-pixels, two green sub-pixels, two blue sub-pixels, and one white sub-pixel (ie R2G2B2W1) to express three pixels, wherein the missing sub-pixel colors Borrowing from surrounding pixels, the W sub-pixel is shared by three pixels to increase the transmittance of three pixels.
  • the input signal is three original pixels, that is, (RGB) 3
  • the W′ sub-pixel is extracted from the original three pixels, and the W′ sub-pixel and the G sub-pixel collectively represent the luminance channel.
  • the color channel is presented by two red, green and blue sub-pixels in the actual pixel.
  • FIG. 3 The flow chart of the R2G2B2W pixel structure arrangement calculation method according to the embodiment of the present invention is shown in FIG. 3:
  • Y 1min represents the minimum luminance of R 1 G 1 B 1
  • Y 1max represents the maximum luminance of R 1 G 1 B 1
  • Y 2min represents the minimum luminance of R 2 G 2 B 2
  • Y 2max represents the maximum luminance of R 2 G 2 B 2
  • Y 3min represents the minimum luminance of R 3 G 3 B 3
  • Y 3max represents the maximum luminance of R 3 G 3 B 3 .
  • W' f (Y 1min , Y 1max , Y 2min , Y 2max , Y 3min , Y 3max ).
  • R i * R i (1+ ⁇ i )-W';
  • ⁇ i Y i max /(Y i max -Y i min )-1
  • ⁇ 1 , ⁇ 2 , and ⁇ 3 are not limited to the above manners, and other image pull-up methods can be used to ensure the brightness and color gamut optimization of pixels after switching from RGB to RGBW, and simultaneously satisfy:
  • R 1 *, R 2 *, R 3 * are expressed by R 1 ', R 2 ' sub-pixels, and can be used as follows :
  • R 1 ' g 1 (R 1 *, R 2 *).
  • R 2 ' g 2 (R 2 *, R 3 *).
  • G 1 *, G 2 *, G 3 * are expressed by G 1 ', G 2 ' sub-pixels, and can be used:
  • G 1 ' g 1 (G 1 *, G 2 *).
  • G 2 ' g 2 (G 2 *, G 3 *).
  • B 1 *, B 2 *, B 3 * are expressed by B 1 ', B 2 ' sub-pixels, and can be used:
  • the f, g1, g2 functions perform pixel merging in the form of average pixel allocation, maximum value, minimum value, linear function or nonlinear function; preferably, R1', G1 are determined in combination with pixel blank area size and white sub-pixel size. ', B1', R2', G2', B2', and simulate and compare with the original data to select the optimal ratio scheme, so as to realize the expression of three pixels with R2G2B2W.
  • the implementation process of the above calculation method may also be converted into a YCrCb space or a hsv space for matching brightness and color saturation, and the W sub-pixel is optimized for the ratio of YCrCb pixels, and the R2G2B2W pixel is used to express the original through RGB pixel redistribution. (RGB) 3 pixel purpose.
  • the color film material can adopt the color resist material which is widely used at present, and in particular, in order to solve the problem of chromatic aberration which may be caused by the addition of white pixels, in the selection of the color film material, a high color gamut photoluminescence color film such as a quantum dot can be used. material.
  • FIG. 4 is a schematic diagram showing the arrangement of R2G1B2W2 pixel structures according to an embodiment of the invention.
  • R2G1B2W2 a description of, for example, "R2G1B2W2" is used to represent two red sub-images
  • a pixel structure is composed of a prime R, a green sub-pixel G, two blue sub-pixels B, and two white sub-pixels, and a total of seven sub-pixels.
  • two red sub-pixels R, two blue sub-pixels B, one green sub-pixel G, and two white sub-pixels W are used to express three pixels, that is, three pixels are represented by R2G1B2W2. .
  • FIG. 4 a description of, for example, "R2G1B2W2" is used to represent two red sub-images
  • a pixel structure is composed of a prime R, a green sub-pixel G, two blue sub-pixels B, and two white sub-pixels, and a total of seven sub
  • the pixel arrangement structure is composed of RWBG RWB+BWRG BWR repeating units, wherein RW, BG, and RWB are three pixel units, and the missing sub-pixels are borrowed from each other to the surrounding pixels.
  • BW, RG, and BWR are three pixel units, and W sub-pixels are shared by three pixel units.
  • the pixel arrangement can also adopt the RWBG RWB+RWBG RWB repeating unit structure as shown in FIG. 4(B), wherein RW, BG, and RWB are three pixel units, and the missing sub-pixels are borrowed from the surrounding pixels, and RW, BG, and RWB are used.
  • RW, BG, and RWB are used for three pixel units.
  • the W sub-pixel is shared by three pixel units.
  • RGBW RWB+RGBW RWB RWBW RGB+RWBW RGB, RGBW RWB+BGRW BWR, RWBW RGB+BWRW BGR, RGBW RWB+RWBG RWB, RGBW RWB+RWBG RWB, etc.
  • RGBW RWB+RGBW RWB RWBW RGB+RWBW RGB
  • RGBW RWB+BGRW BWR RWBW RGB+BWRW BGR
  • RGBW RWB+RWBG RWB RGBW RWB+RWBG RWB
  • RGBW RWB+RWBG RWB RGBW RWB+RWBG RWB
  • FIG. 5 is a schematic diagram showing a R2G1B2W2 pixel structure arrangement calculation method according to an embodiment of the invention.
  • the basic calculation idea is to use two red sub-pixels, one green sub-pixel, two blue sub-pixels, and two white sub-pixels (ie, R2G1B2W2) to express three pixels, each of which has two kinds of pixels.
  • the sub-pixels of the color are composed, the missing sub-pixel colors are borrowed from the surrounding pixels, and the two W sub-pixels are shared by the three pixels to increase the transmittance of the three pixels.
  • the input signal is three original pixels, that is, (RGB) 3 , and W1', W2' sub-pixels are extracted from the original three pixels, and W1', W2' sub-pixels, and G-color sub-pixels collectively reflect brightness. aisle.
  • the color channel is presented by two red, green and blue sub-pixels in the actual pixel.
  • FIG. 6 shows a flow chart of the R2G1B2W2 pixel structure arrangement calculation method according to an embodiment of the present invention as follows:
  • Y 1min represents the minimum brightness of R 1 G 1 B 1
  • Y 1max represents the maximum brightness of R 1 G 1 B 1
  • Y 2min represents R 2 G 2 B 2
  • the minimum value of brightness Y 2max represents the maximum brightness of R 2 G 2 B 2
  • Y 3min represents the minimum value of brightness of R 3 G 3 B 3
  • Y 3max represents the maximum value of brightness of R 3 G 3 B 3 .
  • W 1 , W 2 , W 3 are expressed by W 1 ', W 2 ' sub-pixels, and the following manner can be used:
  • W 2 ' g 2 (W 2 , W 3 ).
  • R i * R i (1+ ⁇ i )-W i ;
  • G i * G i (1+ ⁇ i )-W i ;
  • ⁇ i Y i max /(Y i max -Y i min )-1
  • ⁇ 1 , ⁇ 2 , and ⁇ 3 are not limited to the above manners, and other image quality pull-up algorithms can be used to ensure the brightness and color gamut optimization of pixels after switching from RGB to RGBW, and simultaneously satisfy:
  • R 1 *, R 2 *, R 3 * are expressed by R 1 ', R 2 ' sub-pixels, and can be used as follows :
  • R 1 ' g 1 (R 1 *, R 2 *).
  • R 2 ' g 2 (R 2 *, R 3 *).
  • G 1 ' g(G 1 *, G 2 *, G 3 *).
  • B 1 *, B 2 *, B 3 * are expressed by B 1 ', B 2 ' sub-pixels, and the following manner can be used:
  • the f, g1, g2, g function performs pixel merging in the form of average pixel allocation, maximum value, minimum value, linear function or nonlinear function; preferably, R1' is determined by combining the pixel blank area size and the white sub-pixel size. , G1', B1', R2', B2', W1', W2', and simulate and compare with the original data to select the optimal ratio scheme, so as to realize the expression of three pixels with R2GB2W2.
  • the implementation process of the above calculation method may also be converted into a YCrCb space or a hsv space for matching brightness and color saturation, and the W sub-pixel is optimized for the ratio of YCrCb pixels, and the R2GB2W2 pixel is used to express the original through RGB pixel redistribution. (RGB) 3 pixel purpose.
  • the color film material can adopt the color resist material which is widely used at present, in order to solve the problem of chromatic aberration which may be caused by the addition of white pixels, in the selection of the color film material, the color gamut and the like can be used.
  • Photoluminescent color film material is widely used at present, in order to solve the problem of chromatic aberration which may be caused by the addition of white pixels, in the selection of the color film material, the color gamut and the like can be used.
  • FIGS. 7(A)-(D) are diagrams showing the arrangement of the R2G2B2W+R2G1B2W2 pixel structure according to an embodiment of the present invention.
  • FIG. 7(A) shows a pixel structure arrangement RGBG RWB+BWRW BGR
  • FIG. 7(B) shows a pixel structure arrangement RGBG RWB+WBWR BGR
  • FIG. 7(C) shows a pixel structure arrangement RGBG RWB+ RWBW RGB
  • Fig. 7(D) shows the pixel structure arrangement RGBW RGB+BWRG BWR.
  • the pixel structure arrangement may be composed of any R2G2B2W arrangement and R2G1B2W2 arrangement combination.
  • the pixel rendering method can combine the arrangement methods described in the foregoing embodiments.
  • FIG. 8(A)-(F) are diagrams showing the arrangement of R2G 1/2 2B2W+R2G1B2W 1/2 2 pixels in accordance with an embodiment of the present invention, wherein G 1/2 or W 1/2 represents the green or white sub-
  • the area of the pixel is half of the area of any other sub-pixel.
  • the area may be 1/2 of the area of other sub-pixels, that is, the pixel arrangement is performed by R2G. 1/2 2B2W+R2G1B2W 1/2 2 is used to balance the problem of excessive brightness of white pixels.
  • the pixel structure is composed of RG 1/2 BG 1/2 RWB+BW 1/2 RW 1/2 BGR.
  • the pixel rendering method may be RG 1/2
  • the pixel borrows B sub-pixels from neighboring pixels (such as BG 1/2 pixels), and RWB pixels borrow G 1/2 sub-pixels from neighboring neighboring pixels (such as RG 1/2 and BG 1/2 pixels), RW 1 /2 , BW 1/2 pixels borrow G sub-pixels from adjacent pixels (such as RGB).
  • the pixel rendering method is the same as the previous embodiment, and the algorithm slightly adjusts the algorithm according to the size of the sub-pixel area.
  • the pixel arrangement structure is as shown in FIG. 8(B), and the pixel structure is composed of RG 1/2 BG 1/2 RWB+W 1/2 BW 1/2 R BGR repeating unit, wherein RG 1/2 , BG In the sub-pixels of 1/2 , W 1/2 B, and W 1/2 R, the areas of the G 1/2 sub-pixel and the W 1/2 sub-pixel are respectively 1/2 of the area of any other sub-pixel.
  • the W sub-pixel in the embodiment of FIG. 8(A) can be used. The position is exchanged with the B sub-pixel and the W sub-pixel and the R sub-pixel.
  • the pixel structure is arranged as a RG 1/2 G 1/2 B RWB+BW 1/2 W 1/2 R BGR repeating unit, wherein RG 1/2 , G 1
  • the G sub-pixels and W sub-pixels of /2 B, BW 1/2, and W 1/2 R are 1/2 of other sub-pixels.
  • the pixel structure is arranged as a RG 1/2 G 1/2 B RWB+W 1/2 W 1/2 BR BGR repeating unit, wherein RG 1/2 , G 1
  • the G sub-pixels and W sub-pixels of /2 B, W 1/2 B, and W 1/2 R are 1/2 of other sub-pixels.
  • the pixel structure is arranged in a RG 1/2 BG 1/2 RW 1/2 B+BW 1/2 RW 1/2 BG 1/2 R repeating unit.
  • RG 1/2 , BG 1/2 , RW 1/2 B, BW 1/2 , RW 1/2 , BG 1/2 R represent one pixel, respectively, where all G and W sub-pixels are other sub-pixel areas 1/2.
  • the pixel structure is arranged in a RG 1/2 BG 1/2 RW 1/2 B+W 1/2 BW 1/2 R BG 1/2 R repeating unit.
  • RG 1/2 , BG 1/2 , RW 1/2 B, W 1/2 B, W 1/2 R, BG 1/2 R represent one pixel, respectively, wherein all G and W sub-pixels are other sub-pixels 1/2 of the pixel area.
  • the sub-pixels of the surrounding pixels can be borrowed.
  • the RG 1/2 pixel can borrow surrounding neighboring pixels (for example, in FIG. 8(A)
  • RW 1/2 B pixels borrow G 1/2 sub-pixels from neighboring neighboring pixels (such as RG 1/2 and BG 1/2 pixels)
  • RW 1/2 BW 1/2 pixels borrow G 1/2 sub-pixels from adjacent pixels (such as RG 1/2 B).
  • the color allocation of the sub-pixels is different from the color distribution in the foregoing embodiment in consideration of the area size, and the color allocation size and ratio in this embodiment may be different.
  • the color film material can adopt the color resist material which is widely used at present, in order to solve the problem of chromatic aberration which may be caused by the addition of white pixels, in the selection of the color film material, the color gamut and the like can be used.
  • Photoluminescent color film material is widely used at present, in order to solve the problem of chromatic aberration which may be caused by the addition of white pixels, in the selection of the color film material, the color gamut and the like can be used.
  • the invention is not limited to the TFT-LCD technology, but is also applicable to the AMOLED display technology.

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Abstract

一种像素排列方法、像素渲染方法及图像显示装置。像素由第一结构单元和第二结构单元构成重复单元，第一结构单元和第二结构单元分别在水平方向上重复排列，且第一结构单元与第二结构单元在垂直方向上相间排列；第一结构单元和第二结构单元分别包括7个子像素，7个子像素包括2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素；或者2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素。在制程工艺有限的情况下，能够提高显示装置的分辨率，同时降低功耗。

Description

像素排列方法、像素渲染方法及图像显示装置 技术领域
本发明涉及一种图像显示技术，尤其涉及各种组合像素排布方式及子像素渲染的显示技术。
背景技术
随着显示器件性能的不断提升，高分辨率显示屏已经被应用到各种电子消费品上，并且显示屏的分辨率仍然在不断攀升，然而，高分辨率显示器件的功耗也随着显示器件分辨率的升高而不断攀升，实现具有低功耗的高分辨率显示器件是技术瓶颈。且随着世界各地绿色活动的倡导，人们对于低功耗的显示产品要求越来越高，因此目前高分辨率显示产品的高功耗不适应市场的需要。
高分辨率面板设计中，子像素密度越来越高，导致子像素的开口率急剧下降，白色子像素被用来提高面板的透过率，然而过多白色像素会导致色差，影响显示的画质。
发明内容
因此，本公开从像素结构排布出发，设计一种新的既能提高像素密度，又能降低功耗的像素排布方式，并结合相应的算法排布和彩膜工艺技术，实现高色域、低功耗显示，从而适当减轻或消除至少一个上述技术问题。
本公开提出了一种低功耗、高分辨率的像素排布方式及子像素渲染方法，通过例如R2G2B2W(如RG BG RWB、GB WR BGR)或者R2G1B2W2(如RWBG RWB)等排布方式，实现例如用2个红色子像素、2个或者1个绿色子像素、2个蓝色子像素、1个或者2个白色子像素的排布，结合子像素渲染技术进行三个像素和/或两个像素的表述。在制程工艺有限的情况下，提高分辨率，同时降低功耗。
按照本发明的一个方面，提供了一种像素排列方法，包括：由第一结构单元和第二结构单元构成重复单元，第一结构单元和第二结构单元分别在水平方向上重复排列，且第一结构单元与第二结构单元在垂直方向上相间排列；第一结构单元和第二结构单元分别包括7个子 像素，所述7个子像素包括2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素；或者2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素。按照此实施方式，在制程工艺有限的情况下，可以提高分辨率，同时降低功耗。
优选地，第一颜色子像素为红色子像素R，第二颜色子像素为绿色子像素G，第三颜色子像素为蓝色子像素B，第四颜色子像素为白色子像素W。
可选地，第一结构单元和第二结构单元中的每个像素中缺失的子像素颜色从临近像素中借用，第四颜色子像素为构成第一结构单元或第二结构单元的三个像素共用。按照此实施方式，可以提高显示器的透过率，更好地还原图像。
可选地，第一结构单元和第二结构单元的像素分别都是由2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素组合而成。按照此实施方式，可以提高图像分辨率，同时降低功耗，提供更好的画质。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RGBG RWB+BGRW BGR，其中第一结构单元的三个像素为RG、BG、RWB，第二结构单元的三个像素为BG、RWB、GR。按照此实施方式，可以根据实际需要来精细调节显示效果。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RGBG RWB+GBWR BGR，其中第一结构单元的三个像素为RG、BG、RWB，第二结构单元的三个像素为GB、WRB、GR。按照此实施方式，可以避免高精细画面出现锯齿扭曲，颜色重现性更好，画面更均匀。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG BWR GB+RG BWR GB，其中第一结构单元和第二结构单元各包括三个像素RG、BWR、GB，或者各包括两个RGB像素。按照此实施方式，可以根据实际需要来精细调节显示效果。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG BWR GB+BG RWB GR，其中第一结构单元的三个像素为RG、BWR、GB，第二结构单元的三个像素为BG、RWB、GR；或 者第一结构单元包括两个RGB像素，第二结构单元包括两个BGR像素。按照此实施方式，可以根据实际需要来精细调节显示效果。
可选地，第一结构单元和第二结构单元的像素分别由2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素组合而成。按照此实施方式，可以提高分辨率，同时降低功耗，更好地兼容现有工艺，算法实现简单。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RWBG RWB+BWRG BWR，其中第一结构单元的三个像素为RW、BG、RWB，第二结构单元的三个像素为BW、RG、BWR；或者表达为两个像素，所述两个像素中尽可能包含RGB子像素，如若不能则向相邻像素借用缺失像素。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RWBG RWB+RWBG RWB，其中第一结构单元的三个像素为RW、BG、RWB，第二结构单元的三个像素为RW、BG、RWB。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列可选自以下任意一种：RGBW RWB+RGBW RWB，RWBW RGB+RWBW RGB，RGBW RWB+BGRW BWR，RWBW RGB+BWRW BGR，RGBW RWB+RWBG RWB，RGBW RWB+RWBG RWB。
可选地，红色子像素R和蓝色子像素B的位置可互换，绿色子像素G和白色子像素W的位置可互换。
按照上述实施方式，可以按照实际需求精细调节显示效果。
可选地，第一结构单元的像素由2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素组合而成；第二结构单元的像素由2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素组合而成。按照此实施方式，可以提高图像分辨率，同时降低功耗；画质最优，画面颜色均衡。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列可选自以下任意一种：RGBG RWB+BWRW BGR，RGBG RWB+WBWR BGR，RGBG RWB+RWBW RGB，RGBW RGB+BWRG BWR。按照上述实施方式，可以对显示效果进行微调。
可选地，如果重复单元中G子像素的数目为2或W子像素的数目 为2，则G、W子像素各自的面积可为其它任一子像素面积的1/2。按照此实施方式，可以平衡白色子像素亮度过高的问题。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG1/2BG1/2RWB+BW1/2RW1/2BGR，其中W1/2，G1/2分别表示面积为其它任一子像素面积的1/2的白色子像素、绿色子像素。按照此实施方式，可以对显示效果进行微调。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG1/2BG1/2RWB+W1/2BW1/2R BGR。按照此实施方式，可以避免锯齿状扭曲，颜色重现性好，图像更均匀。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列可为以下任意一种：RG1/2G1/2B RWB+BW1/2W1/2R BGR，RG1/2G1/2B RWB+W1/2W1/2BR BGR。
可选地，由第一结构单元和第二结构单元构成的重复单元像素结构排列还可为以下任意一种：RG1/2BG1/2RW1/2B+BW1/2RW1/2BG1/2R，RG1/2BG1/2RW1/2B+W1/2BW1/2R BG1/2R。
可选地，第一结构单元和第二结构单元也可以分别都表达为两个像素，所述两个像素中尽可能包含RGB子像素，如若不能则向相邻像素借用缺失子像素。
可选地，在保证构成第一结构单元和第二结构单元的像素中、相邻像素的相同颜色的子像素位置不彼此挨着的情况下，每个像素所包含的子像素位置可互换。
按照上述实施方式，可以对显示效果进行各种微调。
可选地，采用量子点等高色域光致发光彩膜材料，由此解决由于白色子像素加入可能导致的色差的问题。
可选地，所有像素排列结构中的W子像素均可由黄色子像素Y、青色子像素C或者品红色子像素M中的任一种代替，从而实现更丰富的显示效果。
按照本发明的另一方面，提供了一种子像素渲染方法，包括：
a.从输入的三个原始像素(RGB)3中提取子像素W′，其中W′＝f(Y1min，Y1max，Y2min，Y2max，Y3min，Y3max)，Y1min和Y1max分别表示R1G1B1的亮度最小值和最大值，Y2min和Y2max分别表示R2G2B2的亮度最小值和最大值，Y3min和Y3max分别表示R3G3B3的亮度最小值和最大值；
b.从原始像素Ri Gi Bi(i＝1，2，3)中去掉W′子像素得到Ri*Gi*Bi*(i＝1，2，3)；
c.利用(Ri*Gi*Bi*)i＝1，2，3中的R1*，R2*，R3*计算R1′，R2′子像素，利用G1*，G2*，G3*计算G1′，G2′子像素；以及利用B1*，B2*，B3*计算B1′，B2′子像素；其中：
R1′＝g1(R1*，R2*)，R2′＝g2(R2*，R3*)；
G1′＝g1(G1*，G2*)，G2′＝g2(G2*，G3*)；
B1′＝g1(B1*，B2*)，B2′＝g2(B2*，B3*)。
按照本发明的又一方面，提供了一种子像素渲染方法，包括：
a.从输入的三个原始像素(RGB)3中提取W1′、W2′子像素，其中：W1′＝g1(W1，W2)；W2′＝g2(W2，W3)；其中Wi＝f(Yi min，Yi max)，Y1min和Y1max分别表示R1G1B1的亮度最小值和最大值，Y2min和Y2max分别表示R2G2B2的亮度最小值和最大值，Y3min和Y3max分别表示R3G3B3的亮度最小值和最大值；
b.从原始像素Ri Gi Bi(i＝1，2，3)中去掉W′得到Ri*Gi*Bi*(i＝1，2，3)；
c.利用(Ri*Gi*Bi*)i＝1，2，3中的R1*，R2*，R3*计算R1′，R2′子像素，利用G1*，G2*，G3*计算G1′子像素；以及利用B1*，B2*，B3*计算B1′，B2′子像素；其中
R1′＝g1(R1*，R2*)；R2′＝g2(R2*，R3*)
G1′＝g(G1*，G2*，G3*)；
B1′＝g1(B1*，B2*)；B2′＝g2(B2*，B3*)。
优选地，R1′，R2′，G1′，G2′，B1′，B2′子像素的确定需结合原始像素的亮度Ri、Gi、Bi和原像素大小SRi，SGi，SBi(i＝1，2，3)，转换后像素的面积SRi′、SGi′、SBi′(i＝1，2)，保证∑Ri*SRi＝∑Ri′*SRi′、∑Gi*SGi＝∑Gi′*SGi′、∑Bi*SBi＝∑Bi′*SBi′，且根据表达颜色的差进行函数的矫正。
按照上述实施方式，可以提高图像分辨率，同时降低功耗，使显示效果最优。
按照本发明的另一方面，提供了一种图像显示装置，其像素排列是按照本申请实施例所包括的任一种重复单元像素结构排列进行排布的。
本发明各实施例主要用于高分辨率显示器件。
本发明各实施例结合RGBG RWB和RGBW RGB像素排列的优点，根据颜色和色域最优匹配，进行子像素大小、排布和像素分配的最优化设计，达到显著降低功耗，提高色域，并且减少工艺压力的目的。
附图说明
以下结合附图来描述本发明的示例性实施例，从而使得本发明的特征和优点更加一目了然，图中：
图1(A)-1(D)示出了按照本发明实施例的R2G2B2W像素结构排列示意图；
图2示出了按照本发明实施例的R2G2B2W像素结构排列演算方法示意图；
图3示出了按照本发明实施例的R2G2B2W像素结构排列演算方法流程框图；
图4示出了按照本发明实施例的R2G1B2W2像素结构排列示意图；
图5示出了按照本发明实施例的R2G1B2W2像素结构排列演算方法示意图；
图6示出了按照本发明实施例的R2G1B2W2像素结构排列演算方法流程框图；
图7(A)-(D)示出了按照本发明实施例的R2G2B2W+R2G1B2W2像素结构排列示意图；以及
图8(A)-(F)示出了按照本发明实施例的R2G1/22B2W+R2G1B2W1/22像素排列结构示意图。
具体实施方式
下面将结合附图对本发明实施例进行更充分地说明。不过，对于本领域普通技术人员而言，本发明可以以多种不同形式来体现，不应被解释为受限于这里所提及的实施例和特定细节。全文中，同样的标号指代同样的元件。
像素，又称画素，为图像显示的基本单位。一般的液晶面板上每个像素由红蓝绿(RGB)三原色组成，通常每个像素上的每种颜色叫 一个“子像素”。显示屏是由许许多多的像素构成的，而为了让每一个单独的像素可以显示出各种颜色，需要把它分解为例如红绿蓝三个比像素更低一级的子像素。也就是说，例如3个子像素构成一个整体，即彩色像素。当需要显示不同颜色的时候，三个子像素分别以不同的亮度发光，由于子像素的尺寸非常小，在视觉上就会混合成所需要的颜色。下面通过实施例来具体阐述若干像素排列结构。
本发明中所描述的实施例都是以红绿蓝三种颜色的子像素(R，G，B)作为示例来描述本发明实施例的像素排列结构。在本发明实施例所示的所有像素排列结构中，可替代地，本领域技术人员也可以设想到使用其他颜色组合的子像素来代替本公开中的R，G，B，W颜色子像素。例如，W子像素均可以由黄色子像素Y、青色子像素C或者品红色子像素M所代替。
图1(A)-1(D)示出了按照本发明实施例的R2G2B2W像素结构排列示意图。“R2G2B2W”表示由2个红色子像素、2个绿色子像素、2个蓝色子像素、以及1个白色子像素共7个子像素构成的像素结构排列。在此实施例中，如图1(A)所示，像素结构排列由RGBG RWB+BGRW BGR构成，其表示由一种结构单元RGBG RWB与另一种结构单元BGRW BGR结合构成重复结构单元，其中符号“+”表示两种排列结构的组合。其中RG、BG、RWB、BG、RWB、GR分别表示一个像素，即R2B2G2W共同表达三个像素。
针对以上结构，RGBG RWB结构的像素渲染演算方法可以为RG像素借用周围临近像素(如BG像素)中的B子像素，BG像素借用RG像素的子像素R，RWB像素则借用周围临近像素(如RG、BG像素)中的G子像素。而BGRW BGR像素排列结构中的BG、RWB、GR分别表达三个像素，彼此相互借用缺失的子像素，而白色子像素W为三个子像素共用；或者BGRW BGR排列也可以用BWRG BGR来代替，并且分别表达为BWR、GB、GR三个像素，如图1(A)第2行的排列。
可选地，如图1(B)所示，像素排列结构由RG BG RWB+GB WRB GR重复单元构成。区别于上述图1(A)的实施例，为避免显示高精细画面出现锯齿状图像扭曲，实现颜色重现性更好、画面更均匀的显示效果，将图1(A)实施案例中的G子像素和B子像素以及W子像素和R子像素交换位置，从而实现更好的图片呈现效果。其中RG BG RWB 为三个像素单元，彼此向周围像素借用缺失的子像素，而GB、WRB、GR为三个像素单元，W子像素为三个像素单元共用。
可选地，如图1(C)所示，像素排列结构由RG BWR GB+RG BWR GB重复单元组成，其中RG BWR GB为三个像素单元，彼此借用子像素，W子像素为三个像素共用。此外，此像素排列结构也可以只表达为两个像素，即RGB W RGB的两个RGB重复单元分别表达两个像素，W子像素为两个像素共用。
可选地，像素排列结构重复单元可以为RGB W RGB+BGR W BGR，如图1(D)所示，像素排列结构的表达同上，不再赘述。
图2按照本发明实施例的R2G2B2W像素结构排列演算方法示意图。针对以上结构，基本的演算方法思想是采用2个红色子像素、2个绿色子像素、2个蓝色子像素，1个白色子像素(即R2G2B2W1)表达三个像素，其中缺失的子像素颜色从周围的像素中借用，W子像素为三个像素共用，以提高三个像素的透过率。
如图2所示，输入信号为三个原始像素，即(RGB)3，从原始三个像素中提取W′子像素，W′子像素和G子像素共同体现亮度通道。同时通过实际像素中的两个红色、绿色、蓝色子像素进行颜色通道的呈现。
按照本发明实施例的R2G2B2W像素结构排列演算方法流程如图3所示：
1)确定W′子像素，Y1min表示R1G1B1的亮度最小值，Y1max表示R1G1B1的亮度最大值，Y2min表示R2G2B2的亮度最小值，Y2max表示R2G2B2的亮度最大值，Y3min表示R3G3B3的亮度最小值，Y3max表示R3G3B3的亮度最大值。
W′＝f(Y1min，Y1max，Y2min，Y2max，Y3min，Y3max)。
2)将原始像素Ri Gi Bi(i＝1，2，3)转化为Ri*Gi*Bi*(i＝1，2，3)
Ri*＝Ri(1+αi)-W′；
Gi*＝Gi(1+αi)-W′；
Bi*＝Bi(1+αi)-W′；
其中，αi根据像素颜色空间比例拉升进行最优化选择，例如αi(i＝1，2，3)可采用如下等式确定：
αi＝Yi max/(Yi max-Yi min)-1
但是α1、α2、α3不局限于以上方式来确定，还可以采用其他的画 质拉升方法，保证像素从RGB转为RGBW后的亮度、色域最优化，并同时满足：
Ri*∶Gi*∶Bi*＝(Ri+W′)∶(Gi+W′)∶(Bi+W′)。
3)从(Ri*Gi*Bi*)i＝1，2，3中将R1*，R2*，R3*用R1′，R2′子像素表达，可采用如下方式：
R1′＝g1(R1*，R2*)。
R2′＝g2(R2*，R3*)。
同理，将G1*，G2*，G3*用G1′，G2′子像素表达，可采用：
G1′＝g1(G1*，G2*)。
G2′＝g2(G2*，G3*)。
同理，将B1*，B2*，B3*用B1′，B2′子像素表达，可采用：
B1′＝g1(B1*，B2*)。
B2′＝g2(B2*，B3*)。
其中，f，g1，g2函数采用平均像素分配、最大值、最小值、线性函数或者非线性函数等形式进行像素合并；优选地，结合像素空白区域大小和白色子像素大小，确定R1′、G1′、B1′、R2′、G2′、B2′，并进行模拟及与原数据对比选择最优化配比方案，从而实现用R2G2B2W表达三个像素。
优选地，g1，g2函数表达需结合原始像素的亮度Ri、Gi、Bi和原像素大小SRi、SGi、SBi(i＝1，2，3)，即转换后像素的面积SRi′、SGi′、SBi′(i＝1，2)，保证∑Ri*SRi＝∑Ri′*SRi′、∑Gi*SGi＝∑Gi′*SGi′、∑Bi*SBi＝∑Bi′*SBi′，且根据表达颜色的差进行函数的矫正，从而实现最优的显示效果。
可选地，上述演算方法实现过程也可以转化到YCrCb空间或者hsv空间进行亮度和色彩饱和度的匹配，结合W子像素最优化YCrCb像素的配比，通过RGB像素重新分布实现利用R2G2B2W像素表达原始(RGB)3像素的目的。
彩膜材料可以采用目前广泛使用的色阻材料，特别地，为了解决由于白色像素加入可能导致的色差的问题，在彩膜材料的选择上，可以采用量子点等高色域光致发光彩膜材料。
图4示出了按照本发明实施例的R2G1B2W2像素结构排列示意图。在上下文中采用例如“R2G1B2W2”的描述来表示2个红色子像 素R、1个绿色子像素G、2个蓝色子像素B和2个白色子像素W共7个子像素构成的一种像素结构排列。具体地，如图4所示，采用2个红色子像素R、2个蓝色子像素B、1个绿色子像素G和2个白色子像素W表达三个像素，即采用R2G1B2W2表达三个像素。可选地，具体实施如图4(A)所示，像素排列结构由RWBG RWB+BWRG BWR重复单元组成，其中RW，BG，RWB为三个像素单元，彼此向周围像素借用缺失的子像素，而BW、RG、BWR为三个像素单元，W子像素为三个像素单元共用。
像素排列也可以采用如图4(B)所示RWBG RWB+RWBG RWB重复单元结构，其中RW，BG，RWB为三个像素单元，彼此向周围像素借用缺失的子像素，而RW、BG、RWB为三个像素单元，W子像素为三个像素单元共用。
其他可选像素排列结构可采用如下任意一种：RGBW RWB+RGBW RWB、RWBW RGB+RWBW RGB、RGBW RWB+BGRW BWR、RWBW RGB+BWRW BGR、RGBW RWB+RWBG RWB、RGBW RWB+RWBG RWB等，在上述像素排列中，红色子像素R和蓝色子像素B的位置可以随意调换，绿色子像素G和白色子像素W的位置可以任意互换。所有符合以上要求的R2B2G1W2排列结构均在本申请的保护范围之内。
图5示出了按照本发明实施例的R2G1B2W2像素结构排列演算方法示意图。针对以上结构，基本的演算思想是采用2个红色子像素、1个绿色子像素、2个蓝色子像素，2个白色子像素(即R2G1B2W2)表达三个像素，其中每个像素由两种颜色的子像素组成，其缺失的子像素颜色从周围的像素中借用，2个W子像素被三个像素共用，以提高三个像素的透过率。
如图5所示，输入信号为三个原始像素，即(RGB)3，从原始三个像素中提取W1′、W2′子像素，W1′、W2′子像素和G色子像素共同体现亮度通道。同时通过实际像素中的两个红色、绿色、蓝色子像素进行颜色通道的呈现。
图6示出了按照本发明实施例的R2G1B2W2像素结构排列演算方法流程如下：
1)确定W1′、W2′子像素，Y1min表示R1G1B1的亮度最小值，Y1max 表示R1G1B1的亮度最大值，Y2min表示R2G2B2的亮度最小值，Y2max表示R2G2B2的亮度最大值，Y3min表示R3G3B3的亮度最小值，Y3max表示R3G3B3的亮度最大值。
Wi＝f(Yi min，Yi max)
将W1，W2，W3用W1′，W2′子像素表达，可采用如下方式：
W1′＝g1(W1，W2)
W2′＝g2(W2，W3)。
2)将原始像素Ri Gi Bi(i＝1，2，3)转化为Ri*Gi*Bi*(i＝1，2，3)
Ri*＝Ri(1+αi)-Wi；
Gi*＝Gi(1+αi)-Wi；
Bi*＝Bi(1+αi)-Wi；
αi根据像素颜色空间比例拉升进行最优化选择，例如αi(i＝1，2，3)可采用：
αi＝Yi max/(Yi max-Yi min)-1
但是α1、α2、α3不局限于以上方式，还可以采用其他的画质拉升算法，保证像素从RGB转为RGBW后的亮度、色域最优化，并同时满足：
Ri*∶Gi*∶Bi*＝(Ri+Wi)∶(Gi+Wi)∶(Bi+Wi)。
3)从(Ri*Gi*Bi*)i＝1，2，3中将R1*，R2*，R3*用R1′，R2′子像素表达，可采用如下方式：
R1′＝g1(R1*，R2*)。
R2′＝g2(R2*，R3*)。
将G1*，G2*，G3*用G1′子像素表达，可采用：
G1′＝g(G1*，G2*，G3*)。
同理，将B1*，B2*，B3*用B1′，B2′子像素表达，可采用如下方式：
B1′＝g1(B1*，B2*)。
B2′＝g2(B2*，B3*)。
其中，f，g1，g2，g函数采用平均像素分配、最大值、最小值、线性函数或者非线性函数等形式进行像素合并；优选地，结合像素空白区域大小和白色子像素大小，确定R1′、G1′、B1′、R2′、B2′、W1′、W2′，并进行模拟及与原数据对比选择最优化配比方案，从而实现用R2GB2W2表达三个像素。
优选地，g1，g2函数表达需结合原始像素的亮度Ri、Gi、Bi和原像素大小SRi，SGi，SBi(i＝1，2，3)，即转换后像素的面积SRi′、SGi′、SBi′(i＝1，2)，保证∑Ri*SRi＝∑Ri′*SRi′、∑Gi*SGi＝∑Gi′*SGi′、∑Bi*SBi＝∑Bi′*SBi′，且根据表达颜色的差进行函数的矫正，从而实现最优的显示效果。
可选地，上述演算方法实现过程也可以转化到YCrCb空间或者hsv空间进行亮度和色彩饱和度的匹配，结合W子像素最优化YCrCb像素的配比，通过RGB像素重新分布实现利用R2GB2W2像素表达原始(RGB)3像素的目的。
针对TFT-LCD显示技术，彩膜材料可以采用目前广泛使用的色阻材料，为了解决由于白色像素加入可能导致的色差的问题，在彩膜材料的选择上，可以采用量子点等高色域光致发光彩膜材料。
结合前述实施例的像素排列结构R2G2B2W+R2G1B2W2，图7(A)-(D)示出了按照本发明实施例的R2G2B2W+R2G1B2W2像素结构排列示意图。例如，图7(A)示出了像素结构排列RGBG RWB+BWRW BGR；图7(B)示出了像素结构排列RGBG RWB+WBWR BGR；图7(C)示出了像素结构排列RGBG RWB+RWBW RGB；图7(D)示出了像素结构排列RGBW RGB+BWRG BWR。可选地，像素结构排列可以由任意R2G2B2W排列和R2G1B2W2排列结合组成。像素渲染方法可将前述实施例所述的排布方法进行结合。
图8(A)-(F)示出了按照本发明实施例的R2G1/22B2W+R2G1B2W1/22像素排列结构示意图，其中G1/2或W1/2表示该绿色或白色子像素的面积为其他任意子像素面积的一半。具体地，如图8所示，若重复单元中G子像素数目为2或者重复单元中W子像素的数目为2时，其面积可以为其他子像素面积的1/2，即像素排列由R2G1/22B2W+R2G1B2W1/22构成，用来平衡白色像素亮度过高的问题。
可选地，如图8(A)所示，像素结构由RG1/2BG1/2RWB+BW1/2RW1/2BGR组成，针对此结构，像素渲染方法可以为RG1/2像素借用周围临近像素(如BG1/2像素)中的B子像素，RWB像素则借用周围临近像素(如RG1/2、BG1/2像素)中的G1/2子像素，RW1/2、BW1/2像素借用临近像素(如RGB)中的G子像素。像素渲染方法与前述实施例相同，算法中根据子像素面积大小的不同略微进行算法的调整。
可选地，像素排列结构如图8(B)所示，像素结构由RG1/2BG1/2RWB+W1/2BW1/2R BGR重复单元构成，其中RG1/2，BG1/2，W1/2B，W1/2R的子像素中，G1/2子像素和W1/2子像素的面积分别为其他任一子像素面积的1/2。区别于上述图8(A)的实施例，为避免显示高精细画面出现锯齿状图像扭曲，画面颜色重现性更好，图像更均匀，可将图8(A)实施例中的W子像素和B子像素以及W子像素和R子像素交换位置。
可选地，如图8(C)所示，像素结构排列为RG1/2G1/2B RWB+BW1/2W1/2R BGR重复单元组成，其中RG1/2、G1/2B、BW1/2和W1/2R的G子像素和W子像素为其他子像素的1/2。
可选地，如图8(D)所示，像素结构排列为RG1/2G1/2B RWB+W1/2W1/2BR BGR重复单元组成，其中RG1/2、G1/2B、W1/2B和W1/2R的G子像素和W子像素为其他子像素的1/2。
可选地，如图8(E)所示，像素结构排列为RG1/2BG1/2RW1/2B+BW1/2RW1/2BG1/2R重复单元组成。其中RG1/2、BG1/2、RW1/2B、BW1/2、RW1/2、BG1/2R分别表示一个像素，其中所有G和W子像素均为其他子像素面积的1/2。
可选地，如图8(F)，像素结构排列为RG1/2BG1/2RW1/2B+W1/2BW1/2R BG1/2R重复单元组成。其中RG1/2、BG1/2、RW1/2B、W1/2B、W1/2R、BG1/2R分别表示一个像素，其中所有G和W子像素均为其他子像素面积的1/2。
针对以上结构，像素渲染方法中每个像素若缺失一个RGB颜色中的任何一个子像素均可以借用周围像素的子像素，例如图8(A)中，RG1/2像素可借用周围临近像素(如BG1/2像素)中的B子像素，RW1/2B像素则借用周围临近像素(如RG1/2、BG1/2像素)中的G1/2子像素，RW1/2、BW1/2像素借用临近像素(如RG1/2B)中的G1/2子像素。
相对于前述实施例，考虑到面积大小，子像素的颜色分配区别于前述实施例中的颜色分配，本实施例中的颜色分配大小和比例会不同。
针对TFT-LCD显示技术，彩膜材料可以采用目前广泛使用的色阻材料，为了解决由于白色像素加入可能导致的色差的问题，在彩膜材料的选择上，可以采用量子点等高色域光致发光彩膜材料。
本发明不局限于TFT-LCD技术，也适用于AMOLED显示技术。
这里使用的术语目的仅仅是为了描述特定的实施例，并非意图限 制本发明。如在此所使用的，单数形式预期也包括复数形式，除非特别指出。还将进一步理解，词语“包含”、“包括”及其变形形式使用时表示所述特征、整体、操作、步骤、元件、和/或部件的存在，但不排除一个或多个其它特征、整体、步骤、操作、元件、部件和/或其组合的存在。
尽管已经参考本发明的示例性实施例对本发明进行了具体示出和描述，本领域普通技术人员将理解，在不脱离所附权利要求所限定的本发明的精神和范围的情况下，可以进行形式上和细节上的各种变化。因此，本发明的范围并非由本发明的详细描述来限定，而是由所附权利要求来限定。

Claims (32)

  1. 一种像素排列方法，包括：
    由第一结构单元和第二结构单元构成重复单元，第一结构单元和第二结构单元分别在水平方向上重复排列，且第一结构单元与第二结构单元在垂直方向上相间排列；第一结构单元和第二结构单元分别包括7个子像素，所述7个子像素包括2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素；或者2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素。
  2. 如权利要求1所述的方法，其中第一颜色子像素为红色子像素R，第二颜色子像素为绿色子像素G，第三颜色子像素为蓝色子像素B，第四颜色子像素为白色子像素W。
  3. 如权利要求1或2所述的方法，其中第一结构单元和第二结构单元中的每个像素中缺失的子像素颜色从临近像素中借用，第四子像素为构成第一结构单元或第二结构单元的像素共用。
  4. 如权利要求1或2所述的方法，其中第一结构单元和第二结构单元的像素分别由2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素组合而成。
  5. 如权利要求4所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列为RGBG RWB+BGRW BGR，其中第一结构单元的三个像素为RG、BG、RWB，第二结构单元的三个像素为BG、RWB、GB。
  6. 如权利要求4所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列为RGBG RWB+GBWR BGR，其中第一结构单元的三个像素为RG、BG、RWB，第二结构单元的三个像素为GB、WRB、GR。
  7. 如权利要求4所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG BWR GB+RG BWR GB，其中第一结构单元和第二结构单元各包括三个像素RG、BWR、GB，或者各包括两个RGB像素。
  8. 如权利要求4所述的方法，其中由第一结构单元和第二结构单 元构成的重复单元像素结构排列为RG BWR GB+BG RWB GR，其中第一结构单元的三个像素为RG、BWR、GB，第二结构单元的三个像素为BG、RWB、GR；或者第一结构单元包括两个RGB像素，第二结构单元包括两个BGR像素。
  9. 如权利要求1或2所述的方法，其中第一结构单元和第二结构单元的像素分别都是由2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素组合而成。
  10. 如权利要求9所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列为RWBG RWB+BWRG BWR，其中第一结构单元的三个像素为RW、BG、RWB，第二结构单元的三个像素为BW、RG、BWR。
  11. 如权利要求9所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列为RWBG RWB+RWBG RWB，其中第一结构单元的三个像素为RW、BG、RWB，第二结构单元的三个像素为RW、BG、RWB。
  12. 如权利要求9所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列选自以下任意一种：RGBW RWB+RGBW RWB，RWBW RGB+RWBW RGB，RGBW RWB+BGRW BWR，RWBW RGB+BWRW BGR，RGBW RWB+RWBG RWB，RGBW RWB+RWBG RWB。
  13. 如权利要求1或2所述的方法，其中第一结构单元的像素由2个第一颜色子像素、2个第二颜色子像素、2个第三颜色子像素以及1个第四颜色子像素组合而成；第二结构单元的像素由2个第一颜色子像素、1个第二颜色子像素、2个第三颜色子像素以及2个第四颜色子像素组合而成。
  14. 如权利要求13所述的方法，其中由第一结构单元和第二结构单元构成的重复单元像素结构排列选自以下任意一种：RGBG RWB+BWRW BGR，RGBG RWB+WBWR BGR，RGBG RWB+RWBW RGB，RGBW RGB+BWRG BWR。
  15. 如权利要求13所述的方法，其中第一结构单元由权利要求5-8中的任一第一或第二结构单元构成，第二结构单元由权利要求9-12中的任一第一或第二结构单元构成。
  16. 如权利要求13所述的方法，其中如果重复单元中G子像素的数目为2或W子像素的数目为2，则G、W子像素各自的面积为其它任一子像素面积的1/2。
  17. 如权利要求16所述的方法，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG1/2BG1/2RWB+BW1/2RW1/2BGR，其中W1/2，G1/2分别表示面积为其它任一子像素面积的1/2的白色子像素、绿色子像素。
  18. 如权利要求16所述的方法，由第一结构单元和第二结构单元构成的重复单元像素结构排列为RG1/2BG1/2RWB+W1/2BW1/2R BGR，其中W1/2，G1/2分别表示面积为其它任一子像素面积的1/2的白色子像素、绿色子像素。
  19. 如权利要求16所述的方法，由第一结构单元和第二结构单元构成的重复单元像素结构排列为以下任意一种：RG1/2G1/2B RWB+BW1/2W1/2R BGR，RG1/2G1/2B RWB+W1/2W1/2BR BGR，其中W1/2，G1/2分别表示面积为其它任一子像素面积的1/2的白色子像素、绿色子像素。
  20. 如权利要求16所述的方法，由第一结构单元和第二结构单元构成的重复单元像素结构排列还可为以下任意一种：RG1/2BG1/2RW1/2B+BW1/2RW1/2BG1/2R，RG1/2BG1/2RW1/2B+W1/2BW1/2R BG1/2R，其中W1/2，G1/2分别表示面积为其它任一子像素面积的1/2的白色子像素、绿色子像素。
  21. 如权利要求5-8，10-12，14-20中任一项所述的方法，其中红色子像素R和蓝色子像素B的位置可互换，绿色子像素G和白色子像素W的位置可互换。
  22. 如权利要求5-8，10-12，14-20中任一项所述的方法；其中第一结构单元和第二结构单元也可以分别都表达为由两个像素构成，所述两个像素中尽可能包含RGB子像素，如若不能则向相邻像素借用缺失子像素。
  23. 如权利要求5-8，10-12，14-20中任一项所述的方法，其中在保证构成第一结构单元和第二结构单元的像素中、相邻像素的相同颜色的子像素位置不彼此挨着的情况下，每个像素所包含的子像素位置可互换。
  24. 如权利要求1或2所述的方法，还包括：采用量子点等高色域光致发光彩膜材料。
  25. 如权利要求1或2所述的方法，还包括：所有像素排列结构中的第四颜色子像素均由黄色子像素Y、青色子像素C或者品红色子像素M中的任一种代替。
  26. 一种子像素渲染方法，包括：
    a.从输入的三个原始像素(RGB)3中提取子像素W′，其中W′＝f(Y1min，Y1max，Y2min，Y2max，Y3min，Y3max)，Y1min和Y1max分别表示R1G1B1的亮度最小值和最大值，Y2min和Y2max分别表示R2G2B2的亮度最小值和最大值，Y3min和Y3max分别表示R3G3B3的亮度最小值和最大值；
    b.从原始像素RiGiBi(i＝1，2，3)中去掉W′子像素得到Ri*Gi*Bi*(i＝1，2，3)；
    c.利用(Ri*G1*Bi*)i＝1，2，3中的R1*，R2*，R3*计算R1′，R2′子像素，利用G1*，G2*，G3*计算G1′，G2′子像素；以及利用B1*，B2*，B3*计算B1′，B2′子像素；其中：
    R1′＝g1(R1*，R2*)，R2′＝g2(R2*，R3*)；
    G1′＝g1(G1*，G2*)，G2′＝g2(G2*，G3*)；
    B1′＝g1(B1*，B2*)，B2′＝g2(B2*，B3*)。
  27. 如权利要求26所述的子像素渲染方法，其中步骤b包括：
    Ri*＝Ri(1+αi)-W′；
    Gi*＝Gi(1+αi)-W′；
    Bi*＝Bi(1+αi)-W′；
    其中，αi根据像素颜色空间比例拉升进行最优化选择，或者采用其他的画质拉升方法，保证像素从RGB转为RGBW后的亮度、色域最优化，并满足：
    Ri*∶Gi*∶Bi*＝(Ri+W′)∶(Gi+W′)∶(Bi+W′)。
  28. 一种子像素渲染方法，包括：
    a.从输入的三个原始像素(RGB)3中提取W1′、W2′子像素，其中：W1′＝g1(W1，W2)；W2′＝g2(W2，W3)；其中Wi＝f(Yi min，Yi max)，Y1min和Y1max分别表示R1G1B1的亮度最小值和最大值，Y2min和Y2max分别表示R2G2B2的亮度最小值和最大值，Y3min和Y3max分别表示R3G3B3的亮度最小值和最大值；
    b.从原始像素RiGiBi(i＝1，2，3)中去掉W′得到Ri*Gi*Bi*(i＝1，2，3)；
    c.利用(Ri*Gi*Bi*)i＝1，2，3中的R1*，R2*，R3*计算R1′，R2′子像素，利用G1*，G2*，G3*计算G1′子像素；以及利用B1*，B2*，B3*计算B1′，B2′子像素；其中
    R1′＝g1(R1*，R2*)；R2′＝g2(R2*，R3*)
    G1′＝g(G1*，G2*，G3*)；
    B1′＝g1(B1*，B2*)；B2′＝g2(B2*，B3*)。
  29. 如权利要求28所述的子像素渲染方法，其中步骤b包括：
    Ri*＝Ri(1+αi)-Wi；
    Gi*＝Gi(1+αi)-Wi；
    Bi*＝Bi(1+αi)-Wi；
    αi根据像素颜色空间比例拉升进行最优化选择，或者采用其他的画质拉升算法，保证像素从RGB转为RGBW后的亮度、色域最优化，并满足：
    Ri*∶Gi*∶Bi*＝(Ri+Wi)∶(Gi+Wi)∶(Bi+Wi)。
  30. 如权利要求26或28所述的子像素渲染方法，其中f，g1，g2函数采用平均像素分配、最大值、最小值、线性函数或者非线性函数形式进行像素合并。
  31. 如权利要求26或28所述的方法，其中R1′，R2′，G1′，G2′，B1′，B2′子像素的确定需结合原始像素的亮度Ri、Gi、Bi和原像素大小SRi，SGi，SBi(i＝1，2，3)，转换后像素的面积SRi′、SGi′、SBi′(i＝1，2)，保证∑Ri*SRi＝∑Ri′*SRi′、∑Gi*SGi＝∑Gi′*SGi′、∑Bi*SBi＝∑Bi′*SBi′，且根据表达颜色的差进行函数的矫正。
  32. 一种图像显示装置，其像素排列是按照权利要求1-25中所包括的任一种重复单元像素结构排列进行排布的。
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