CN105989800B - LED display methods and dependency structure and device based on sub-pix down-sampling - Google Patents

Abstract

The present invention relates to LED display methods and dependency structure and device based on sub-pix down-sampling, the method includes the steps: receive the original image of input；Sub-pix down-sampling is carried out to obtain multiple sub-pix color data corresponding to each LED display unit to original image；Complementary color processing is carried out respectively to the multiple sub-pix color data of each LED display unit to obtain sub-pix color data after multiple complementary colors processing of corresponding LED display unit；And sub-pix color data respectively drives the first color LED, the second color LED in corresponding LED display unit after being handled according to the multiple complementary color of each LED display unit and two third color LED are performed image display.The present invention is laid out using specific physics sub-pix (such as LED), and sub-pix down-sampling technology and sub-pix color data complementary color Processing Algorithm is combined to perform image display, and can effectively promote brightness of display screen resolution ratio.

Description

LED display methods and dependency structure and device based on sub-pix down-sampling

Technical field

The present invention relates to field of display technology, in particular to a kind of LED display methods, one kind based on sub-pix down-sampling LED structure, a kind of display unit and a kind of display control unit based on sub-pix down-sampling.

Background technique

Display technology is one of the most critical part in the included technology of information industry, is the bridge that information system is interacted with people Beam and tie.Its development and change improves people's lives quality, promotes the development of other industries.Since 21 century, LED display with its energy-saving and environmental protection, it is highlighted the advantages that be widely used, be seen everywhere in social life.LED display with The CRT monitor to shine by beam bombardment fluorescent screen is different, its only fixed resolution ratio, because of their physical picture element By three primary colours (red, green, blue) sub-pix by certain arrangement, neatly closely solidify on a display panel.It can be seen that LED The image quality of display screen, production cost, manufacturing process and physical picture element scale be closely related.Therefore, LED display at present Its display resolution is mainly improved using the method for the density and scale that increase display equipment physical picture element in industry, but this The direct result of method is to lead to the increase of manufacturing cost, and when pixel density reaches a certain level, manufacture craft exists Bottleneck, there are also problems in terms of heat dissipation.In addition, promoting display resolution using pixel multiplexing technology there are also some New method, but all fail to obtain comparatively ideal effect, therefore the resolution ratio for how improving LED display is still LED display industry Problem to be solved.

Each LED pixel point of LED display used by the prior art be by a red LED, a green LED and One blue led is constituted, these three colors LED is arranged at triangle disposition, can be not only used for real image element show can also be used for it is virtual It has been shown that, there is preferable applicability.However, such LED display is (green comprising a higher brightness information, the G of less chrominance information Color) component and two more chrominance informations, the R (red) of less luminance information, B (blue) component；Studies have shown that vision system Details resolution capability to color is higher than for the details resolution capability of brightness, so this layout type is unfavorable for promoting brightness point Resolution.

Summary of the invention

Therefore, aiming at the shortcomings in the prior art, the present invention provides a kind of display side LED based on sub-pix down-sampling Method, a kind of LED structure, a kind of display unit and a kind of display control unit based on sub-pix down-sampling.

Specifically, a kind of LED display methods based on sub-pix down-sampling provided in an embodiment of the present invention, be suitable for the application of in A kind of LED display unit array, the LED display unit array include multiple LED display units；Each described LED is shown Unit includes a first color LED, a second color LED and the two third color LED in rectangular arranged, and described two A third color LED is located on same diagonal line.The LED display methods is comprising steps of (S1) receives the original graph of input Picture, wherein the original image includes multiple three primary colours data corresponding with multiple original pixels；(S2) to described original Image carries out sub-pix down-sampling to obtain multiple sub-pix color data corresponding to each LED display unit； (S3) complementary color processing is carried out the multiple sub-pix color data of the multiple LED display unit to obtain described in each Sub-pix color data after multiple complementary colors processing of LED display unit；And (S4) according to LED display unit described in each After the processing of the multiple complementary color sub-pix color data respectively drive the first color LED in corresponding LED display unit, The second color LED and described two third color LED are performed image display.

In one embodiment of the invention, above-mentioned steps (S2) include: every four of the sampling original image adjacent A color data in the three primary colours data of each of original pixels original pixels, to obtain showing with corresponding LED The first color LED, the second color LED and described two third color LED difference in unit is four corresponding Sub-pix color data.

In one embodiment of the invention, above-mentioned steps (S3) include: to carry out to a target sub-pix color data When complementary color processing, mark off comprising the target sub-pix color data and adjacent with the target sub-pix color data more The block of pixels of a sub-pix color data and based in the block of pixels multiple sub-pix color data to be processed and with it is described Non- Sample Color Data in the three primary colours data of the corresponding multiple original pixels of multiple sub-pix color data to be processed Judge whether to need to carry out complementary color and determine complementary color position and complementary color value size when needing to carry out complementary color, wherein the multiple Sub-pix color data to be processed includes the target sub-pix color data and is not with the target sub-pix color data With the sub-pix color data of color type.

In one embodiment of the invention, above-mentioned to judge whether that needing the method for carrying out complementary color includes: to judge the mesh It is described whether the first non-Sample Color Data in the three primary colours data of the corresponding original pixels of mark sub-pix color data is greater than All and the described first non-Sample Color Data is the sub-pix color data of same color type in block of pixels, and is tied in judgement Determination needs to carry out the first component complementary color when fruit is "Yes"；And judge the corresponding original image of the target sub-pix color data Whether the second non-Sample Color Data in the three primary colours data of element is greater than all in the block of pixels does not sample with described second Color data is the sub-pix color data of same color type, and determination needs to carry out second point when judging result is "Yes" Measure complementary color.

In one embodiment of the invention, the method for above-mentioned determining complementary color position includes: when determination needs to carry out first When component complementary color, all sub-pixes with the described first non-Sample Color Data for same color type in the block of pixels are found out The corresponding first position of the maximum value is simultaneously determined as the first component complementary color position by maximum value in color data；And When determination needs to carry out second component complementary color, it is same for finding out all in the block of pixels and the described second non-Sample Color Data The corresponding second position of the maximum value is simultaneously determined as by maximum value in the sub-pix color data of one color type Two component complementary color positions.

In one embodiment of the invention, the method for above-mentioned determining complementary color value size includes: (i) when determination needs to carry out When the first component and second component complementary color, the target sub-pix color data, first and second described position are respectively corresponded Two original pixels three primary colours data in the target sub-pix color data be two of same color type not Updated value of the average value of Sample Color Data three as the target sub-pix color data, the first position is corresponding Sub-pix color data, in the three primary colours data of the corresponding original pixels of the target sub-pix color data with described The corresponding sub-pix color data in one position is the non-Sample Color Data of same color type, the corresponding original in the second position Sub-pix color data corresponding with the first position in the three primary colours data of beginning pixel is not adopting for same color type Updated value of the average value of sample color data three as the corresponding sub-pix color data in the first position, by described second In the corresponding sub-pix color data in position, the three primary colours data of the corresponding original pixels of the target sub-pix color data Sub-pix color data corresponding with the second position is the non-Sample Color Data of same color type, the first position Sub-pix color data corresponding with the second position in the three primary colours data of corresponding original pixels is same color class Updated value of the average value of the non-Sample Color Data three of type as the corresponding sub-pix color data in the second position； (ii) when determination needs to carry out the first component without carrying out second component complementary color, by the target sub-pix number of colours According in the three primary colours data of, corresponding original pixels in the first position being same face with the target sub-pix color data Updated value of the average value of both non-Sample Color Datas of color type as the target sub-pix color data, by described In the corresponding sub-pix color data in one position, the three primary colours data of the corresponding original pixels of the target sub-pix color data Sub-pix color data corresponding with the first position be that both non-Sample Color Data of same color type being averaged It is worth the updated value as the corresponding sub-pix color data in the first position；(iii) need to carry out second component when determining and When not needing to carry out the first component complementary color, by the target sub-pix color data, the corresponding original pixels in the second position Three primary colours data in both non-Sample Color Data that the target sub-pix color data is same color type it Updated value of the average value as the target sub-pix color data, by the corresponding sub-pix color data in the second position, Sub- picture corresponding with the second position in the three primary colours data of the corresponding original pixels of the target sub-pix color data Plain color data is the average value of both non-Sample Color Datas of same color type as the corresponding Asia in the second position The updated value of pixel color data.

In one embodiment of the invention, above-mentioned block of pixels is nine centered on the target sub-pix color data Palace lattice block of pixels, and the target sub-pix color data is non-edge sub-pix color data.

In one embodiment of the invention, above-mentioned steps (S4) include: to export the institute of each LED display unit It states at the complementary color for corresponding to the first color LED and the second color LED after multiple complementary colors are handled in sub-pix color data Sub-pix color data drives the first color LED and the second color LED after reason, and exports each described LED The complementary color processing of described two third color LED is corresponded to after the multiple complementary color processing of display unit in sub-pix color data The half value of sub-pix color data respectively drives described two third color LED afterwards.

In one embodiment of the invention, above-mentioned first color LED is red LED, and the second color LED is blue LED, and described two third color LED are green LED.

In addition, a kind of LED structure provided in an embodiment of the present invention, comprising: in a first color LED core of rectangular arranged Piece, a second color LED chip and two third color LED chips, and described two third color LED chips are in same On diagonal line；And a transparent encapsulating body, the first color LED chip, the second color LED chip and described two A third color LED chip is in the transparent enclosure body.

In one embodiment of the invention, above-mentioned first color LED chip is red LED chips, second color LED chip is blue LED die, and described two third color LED chips are green LED chip.

Furthermore a kind of display unit provided in an embodiment of the present invention, is suitable for the application of in display panel.The LED display is single Member includes: a first color physics sub-pix, a second color physics sub-pix and the two third face in rectangular arranged Color physics sub-pix, and described two third color physics sub-pixes are located on same diagonal line, the first color physics Sub-pix and the second color physics sub-pix are located on another diagonal line.

In one embodiment of the invention, above-mentioned first color physics sub-pix is red LED, the second color object Reason sub-pix is blue led, and described two third color physics sub-pixes are green LED.

In addition, a kind of display control unit based on sub-pix down-sampling provided in an embodiment of the present invention, it is aobvious to be suitable for driving Show that panel performs image display, the display panel includes the multiple display units arranged with array manner；Each is described aobvious Show that unit includes a first color physics sub-pix, a second color physics sub-pix and two thirds in rectangular arranged Color physics sub-pix, and described two third color physics sub-pixes are located on same diagonal line.The display control dress Setting includes: sub-pix downsampling unit, obtains corresponding to for carrying out sub-pix down-sampling to the original image of input each Multiple sub-pix color data of a display unit, wherein the original image includes respectively corresponding with multiple original pixels Multiple three primary colours data；Sub-pix color data complementary color processing unit, for the multiple of the multiple display unit Sub-pix color data carries out complementary color processing to obtain sub-pix color after multiple complementary colors processing of each display unit Data；Display driver element, for sub-pix number of colours after being handled according to the multiple complementary color of display unit described in each According to the first color physics sub-pix, the second color physics sub-pix and the institute respectively driven in corresponding display unit Two third color physics sub-pixes are stated to perform image display.

In one embodiment of the invention, above-mentioned sub-pix downsampling unit is specifically used for: sampling the original image Each of every four adjacent original pixels three primary colours data of original pixels in a color data, to obtain and phase The first color physics sub-pix, the second color physics sub-pix and described two third face in corresponding display unit Color physics sub-pix distinguishes corresponding four sub-pix color data.

In one embodiment of the invention, above-mentioned sub-pix color data complementary color processing unit is specifically used for: to one Target sub-pix color data carry out complementary color processing when, mark off comprising the target sub-pix color data and with the target The block of pixels of the adjacent multiple sub-pix color data of sub-pix color data and based on multiple to be processed in the block of pixels The three primary colours of sub-pix color data and multiple original pixels corresponding with the multiple sub-pix color data to be processed Non- Sample Color Data in data judge whether to need to carry out complementary color and be determined when needing to carry out complementary color complementary color position and Complementary color value size, wherein the multiple sub-pix color data to be processed include the target sub-pix color data and with it is described Target sub-pix color data is the sub-pix color data of different colours type.

In one embodiment of the invention, what above-mentioned sub-pix color data complementary color processing unit used judges whether to need The method for carrying out complementary color includes: in the three primary colours data for judge the corresponding original pixels of the target sub-pix color data It is same color that whether the first non-Sample Color Data, which is greater than all in the block of pixels and the described first non-Sample Color Data, The sub-pix color data of type, and determination needs to carry out the first component complementary color when judging result is "Yes"；And judge institute Whether the second non-Sample Color Data stated in the three primary colours data of the corresponding original pixels of target sub-pix color data is greater than All and the described second non-Sample Color Data is the sub-pix color data of same color type in the block of pixels, and is sentencing Determination needs to carry out second component complementary color when disconnected result is "Yes".

In one embodiment of the invention, the determination complementary color position that above-mentioned sub-pix color data complementary color processing unit uses The method set include: when determine need to carry out the first component complementary color when, find out and all in the block of pixels do not adopted with described first Sample color data is the maximum value in the sub-pix color data of same color type and the maximum value is one the corresponding One position is determined as the first component complementary color position；And when determination needs to carry out second component complementary color, find out the block of pixels In it is all with the described second non-Sample Color Data for the maximum value in the sub-pix color data of same color type and by institute It states the corresponding second position of maximum value and is determined as second component complementary color position.

In one embodiment of the invention, the determination complementary color value that above-mentioned sub-pix color data complementary color processing unit uses The method of size includes: (i) when determination needs to carry out the first component and second component complementary color, by the target sub-pix color In data, the three primary colours data of corresponding two original pixels in first and second described position with the target sub-pix Color data is the average value of two non-Sample Color Data threes of same color type as the target sub-pix color The updated value of data, the corresponding sub-pix color data in the first position, the target sub-pix color data is corresponding Sub-pix color data corresponding with the first position in the three primary colours data of original pixels be same color type not Sample Color Data, the corresponding original pixels in the second position three primary colours data in Asia corresponding with the first position Pixel color data is that the average value of the non-Sample Color Data three of same color type is corresponding as the first position The updated value of sub-pix color data, by the corresponding sub-pix color data in the second position, the target sub-pix color Sub-pix color data corresponding with the second position in the three primary colours data of the corresponding original pixels of data is same face In the non-Sample Color Data of color type, the three primary colours data of the corresponding original pixels in the first position with the second The average value for the non-Sample Color Data three that corresponding sub-pix color data is same color type is set as described second The updated value of the corresponding sub-pix color data in position；(ii) need to carry out the first component without carrying out second point when determining It, will be in the target sub-pix color data, the three primary colours data of the corresponding original pixels in the first position when measuring complementary color Average value with both the non-Sample Color Data that the target sub-pix color data is same color type is as the mesh The updated value for marking sub-pix color data, by the corresponding sub-pix color data in the first position, the target sub-pix face Chromatic number is same according to the sub-pix color data corresponding with the first position in the three primary colours data of corresponding original pixels The average value of both non-Sample Color Datas of color type as the corresponding sub-pix color data in the first position more New value；(iii) when determination needs to carry out second component without carrying out the first component complementary color, by the target sub-pix face In chromatic number evidence, the three primary colours data of the corresponding original pixels in the second position is same with the target sub-pix color data Updated value of the average value of both non-Sample Color Datas of one color type as the target sub-pix color data, by institute State the three primary colours number of the corresponding sub-pix color data in the second position, the corresponding original pixels of the target sub-pix color data Sub-pix color data corresponding with the second position in be both non-Sample Color Datas of same color type it Updated value of the average value as the corresponding sub-pix color data in the second position.

In one embodiment of the invention, above-mentioned display driver element is specifically used for: it is single to export each described display The first color physics sub-pix and second face are corresponded in sub-pix color data after the multiple complementary color processing of member Sub-pix color data drives the first color physics sub-pix and second face after the complementary color processing of color physics sub-pix Color physics sub-pix, and export it is right in sub-pix color data after the multiple complementary color processing of each display unit The half value of sub-pix color data respectively drives described two after answering the complementary color of described two third color physics sub-pixes to handle Third color physics sub-pix.

Therefore, the above embodiment of the present invention uses green four physics sub-pixes (such as LED) layout type of a red-blue two, And sub-pix down-sampling technology and sub-pix color data complementary color Processing Algorithm is combined to perform image display, therefore can be effective Promote brightness of display screen resolution ratio.

Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become obvious.But it should know Road, which is only the purpose design explained, not as the restriction of the scope of the present invention, this is because it should refer to Appended claims.It should also be noted that unless otherwise noted, it is not necessary to which scale attached drawing, they only try hard to concept Ground illustrates structure and process described herein.

Detailed description of the invention

Below in conjunction with attached drawing, specific embodiments of the present invention will be described in detail.

Fig. 1 is a kind of schematic diagram of LED display unit array of the embodiment of the present invention.

Fig. 2 is the schematic diagram of a variety of possible arrangements of four LED in a kind of LED display unit of the embodiment of the present invention.

Fig. 3 is a kind of schematic diagram of LED structure of the embodiment of the present invention.

Fig. 4 a is the schematic illustration of traditional both full-pixel sampling.

Fig. 4 b is the schematic illustration of the sub-pix down-sampling of the embodiment of the present invention.

Fig. 5 a shows the display picture with the wide white straight line of a pixel.

Fig. 5 b is to the picture for showing that picture corresponding original image show again after sub-pix down-sampling shown in Fig. 5 a.

Fig. 6 is the embodiment of the present invention using the sub-pix color data arrangement schematic diagram obtained after sub-pix down-sampling.

Fig. 7 a to 7d is that the embodiment of the present invention carries out block of pixels used by complementary color is handled to various sub-pix color data Schematic diagram.

Fig. 8 is a kind of LED display methods flow diagram based on sub-pix down-sampling of the embodiment of the present invention.

Fig. 9 is a kind of functional module signal of display control unit based on sub-pix down-sampling of the embodiment of the present invention Figure.

Specific embodiment

In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention Specific embodiment be described in detail.

It is of the invention for ease of understanding, it will be laid out below with LED and display methods two large divisions is described in detail respectively.

Referring to Figure 1, the LED display unit array of the present embodiment includes multiple LED display units (or LED pixel) P, It is for example applied to LED display.Single led display unit P uses four lamp matrix layout modes, including a red (R) LED and two LED, a blue (B) green (G) LED and arrangement it is rectangular；Described herein to be, rectangular arranged includes rectangular Shape arrangement and square arrangement.Wherein, two G LED are always positioned on the same diagonal line of rectangle.In addition, this four LED It is not closely to get together but at regular intervals in space layout, is the one of pel spacing under this spacing ideal conditions Half, if defining LED display unit spacing (or pel spacing) is L, the column pitch D1 of four LED is excellent in LED display unit P Selection of land meets 0.3L < D1 < 0.7L, and line space D2 preferably meets 0.3L < D2 < 0.7L；Final entire LED display unit battle array Column are that periodic extension is constituted on line direction and column direction by the LED display unit P of above-mentioned arrangement.Above-mentioned red, green and indigo plant Color is using the LED light generallyd use in current industry, and this is not restricted by the present invention.In addition, above-mentioned arrangement is rectangular LED and two one red (R) LED, a blue (B) green (G) LED are as single led pixel (LED display unit) P Physics sub-pix；In other embodiments of the present invention, each physics sub-pix is not limited to LED, is also possible to other types Sub-pix to constitute other kinds of display unit.

Fig. 2 is referred to, the various possible arrangements of four color LED in above-mentioned LED display unit P are shown.Specifically, scheme 2 (a) to Fig. 2 (d) show 4 kinds of arrangement modes altogether, it is found that in various possible arrangements, two G LED are always positioned at same On diagonal line, R LED and B LED are also to be always positioned on same diagonal line.In the present embodiment, using two G LED's The reason is that green includes more luminance information；Studies have shown that the details resolution capability of visual system on luminance is higher than to coloration Details resolution capability, so such layout type be conducive to promoted brightness resolution.

Furthermore, it is worth mentioning at this point that, four LED in single led display unit P can be using mutually indepedent encapsulation shape Formula, such LED screen body manufacturer can purchase four LED light of individual packages in the manner described above when manufacturing LED display Carry out LED layout.Or four LED in single led display unit P are respectively LED chip and are respectively positioned on same transparent In packaging body TC (as shown in Figure 3), so four LED chips can be laid out in the manner described above manufacture by LED manufacturer It out include the LED structure of four LED chips, each LED structure is subsequent to be used as a LED display unit P for LED screen body manufacturer Using manufacturing LED display.

On the other hand, it is laid out for the LED in above-mentioned LED display unit P, the LED display methods of the embodiment of the present invention is adopted With sub-pix down-sampling technology.Sub-pix down-sampling technology refers to during display with each primary colours sub-pix (sub-pixel) Basic processing unit as addressing, sampling and reconstruct.Since the sub-pix of spatial position separation is closely and alternatively arranged each other, In Under viewing distance appropriate, spatial color mixing will occur for the different colours sub-pix of discharge together side by side, be formed full-color Chromatic graph picture.Obviously, this technology improves the display density of luminance component, to effectively improve the display quality of equipment.Under Face illustrates traditional both full-pixel sampling and the present embodiment by taking the LED placement scheme of above-mentioned " the green four lamp banks cloth of a red-blue two " as an example Sub-pix down-sampling difference.If size is the original image of 2M × 2N, with both full-pixel in low resolution (M × N) equipment When sample mode is shown, need respectively to carry out the down-sampling of 2 times of compression in level, vertical direction, i.e., from every 4 originals of original image 1 pixel is extracted in beginning pixel, addressing corresponds to the physical picture element (as shown in fig. 4 a) of display equipment.And sub-pix down-sampling is then It is that adjacent 4 original pixels from original image obtain corresponding R respectively, G or B component are mapped on a physical picture element (as shown in Figure 4 b).As can be seen that sub-pix down-sampling display technology is not the case where changing display equipment physical picture element density Under, the addressability and display scale, the display resolution of lifting means of system can be effectively improved, and pixel multiplexing is not used Technology not will lead to image content and fog.

For sub-pix down-sampling technology, since (each sub-pix has only sampled original image for the lack sampling of color component In single original pixels three primary colours data a color data, and other two color data is then non-sample color number According to), sub-pix down-sampling display technology will appear color mistake.For example, the white straight line wide to a pixel is (such as Fig. 5 a institute Show), sub-pix down-sampling result will appear situation as shown in Figure 5 b.

Therefore, the embodiment of the present invention is also directed to sub-pix down-sampling display technology bring color Problem-Error, core solution Certainly method is to carry out complementary color to sample color component (or Sample Color Data, sub-pix color data), for example, sub-pix Sample color component is R component, then can compensate G, B component to the sub-pix, it is assumed that the data obtained after sub-pix down-sampling are such as Shown in Fig. 6, G1 and G2 indicates the green data in original image in the three primary colours data of different original pixels in Fig. 6；Then It can be using specific complementary color scheme as described below after sub-pix down-sampling:

(1) complementary color processing is carried out to sub-pix red data R [i, j] in Fig. 6: marks off one and includes R and adjacent thereto At least one B and at least one G (G1 or G2) block of pixels, such as on the left of Fig. 7 a shown in nine grids block of pixels, if sub- picture The initial value of plain red data R [i, j] is R0 [i, j] and sets with sub-pix red data R [i, j] in corresponding original image Original pixels [i, j] three primary colours data in two non-Sample Color Datas namely green data and blue data difference For G0 [i, j] and B0 [i, j]；For purposes of illustration only, the center sub-pix red data on the left of Fig. 7 a in nine grids is labeled as R0, four A sub-pix green data is respectively labeled as G1, G2, G3, G4 and four sub-pix blue datas and is respectively labeled as B1, B2, B3 And B4, result after label on the right side of Fig. 7 a shown in.Then:

(1a) judges whether to need complementary color

Judge whether to need to mend the condition of G component: G0 [i, j] > G1&&G0 [i, j] > G2&&G0 [i, j] > G3&&G0 [i, j] > G4, namely judge whether all sub-pix green datas in nine grids block of pixels are both less than G0 [i, j], if all Less than G0 [i, j], then it represents that need to carry out G component complementary color；

Judge whether to need to mend the condition of B component: B0 [i, j] > B1&&B0 [i, j] > B2&&B0 [i, j] > B3&&B0 [i, j] > B4, namely judge whether all sub-pix blue datas in nine grids block of pixels are both less than B0 [i, j], if all Less than B0 [i, j], then it represents that need to carry out B component complementary color；

(1b) determines complementary color position

The present embodiment is designed to G1, G2, G3, and the corresponding position of maximum value is mended in tetra- sub-pix green datas of G4 Color.If a indicates G1, G2, G3, the corresponding position of maximum value in tetra- sub-pix green datas of G4, if there is greater than two positions same When be maximum value, then select complementary color position by the number sequencing of this four sub-pix green datas, for example, as G1=G2 and For the maximum value in this four sub-pix green datas, then select the corresponding position G1 as complementary color position；

The present embodiment is designed to B1, B2, B3, and the corresponding position of maximum value is mended in tetra- sub-pix blue datas of B4 Color.If b indicates B1, B2, B3, the corresponding position of maximum value in tetra- sub-pix blue datas of B4, if there is greater than two positions same When be maximum value, then select complementary color position by the number sequencing of this four sub-pix blue datas, for example, as B2=B3 and For the maximum value in this four sub-pix blue datas, then select the corresponding position B2 as complementary color position；

(1c) determines complementary color value size (namely sub-pix color data values size or updated value after complementary color processing)

(i) work as G, B component is required to complementary color

Then complementary color value size are as follows:

R [i, j]=(R0 [i, j]+R0 [a]+R0 [b])/3

G [a]=(G0 [i, j]+G0 [a]+G0 [b])/3

B [b]=(B0 [i, j]+B0 [a]+B0 [b])/3

(ii) when G component needs complementary color, B component not to need complementary color

Then complementary color value size are as follows:

R [i, j]=(R0 [i, j]+R0 [a])/2

G [a]=(G0 [i, j]+G0 [a])/2

(iii) when B component needs complementary color, G component not to need complementary color

Then complementary color value size are as follows:

R [i, j]=(R0 [i, j]+R0 [b])/2

B [b]=(B0 [i, j]+B0 [b])/2

(iv) when G, B component do not need complementary color, then without calculating complementary color value, initial value is directlyed adopt；

Above-mentioned R0 [a] is not sample red data, G0 in the three primary colours data of the original pixels of the position a in original image [a] is the initial value of the sub-pix green data of the position a, the three primary colours number that B0 [a] is the original pixels of the position a in original image Do not sample blue data in, R0 [b] be in original image in the three primary colours data of the original pixels of the position b do not sample it is red Chromatic number according to, G0 [b] be in the three primary colours data of the original pixels of the position b in original image do not sample green data, B0 [b] is The initial value of the sub-pix blue data of the position b.

(2) in Fig. 6 sub-pix green (G1) data G [i, j] carry out complementary color processing: mark off one comprising G1 and and its The block of pixels of adjacent at least one R and at least one B, such as nine grids block of pixels shown in the left side Fig. 7 b, if sub-pix is green Chromatic number is G0 [i, j] according to the initial value of G [i, j] and sets the original with sub-pix green data G [i, j] in corresponding original image Non- Sample Color Data namely red data and blue data in the three primary colours data of beginning pixel [i, j] are respectively R0 [i, j] And B0 [i, j]；For purposes of illustration only, the center sub-pix green data on the left of Fig. 7 b in nine grids is labeled as G0, other four Asias Pixel green data is respectively labeled as G1, G2, G3, and G4, two sub-pix red datas are labeled as R1, R2, two sub-pix indigo plants Chromatic number is according to being respectively labeled as B1, B2, the result after label on the right side of Fig. 7 b shown in.Then:

(2a) judges whether to need complementary color

Judge whether to need to mend the condition of R component: R0 [i, j] > R1&&R0 [i, j] > R2, namely judges nine grids pixel Whether all sub-pix red datas in block are both less than R0 [i, j], if both less than R0 [i, j], then it represents that need to carry out R points Measure complementary color；

Judge whether to need to mend the condition of B component: B0 [i, j] > B1&&B0 [i, j] > B2, namely judges nine grids pixel Whether all sub-pix blue datas in block are both less than B0 [i, j], if both less than B0 [i, j], then it represents that need to carry out B points Measure complementary color；

(2b) determines complementary color position

The present embodiment is designed to R1, and the corresponding position of maximum value carries out complementary color in two sub-pix red datas of R2.If a Indicate R1, the corresponding position of maximum value in two sub-pix red datas of R2, if two positions are simultaneously maximum values, by this two The number sequencing of a sub-pix red data selects complementary color position, such as R1=R2 and is the two sub-pix red numbers Maximum value in then selects the corresponding position R1 as complementary color position；

The present embodiment is designed to B1, and the corresponding position of maximum value carries out complementary color in two sub-pix blue datas of B2.If b Indicate B1, the corresponding position of maximum value in two sub-pix blue datas of B2, if two positions are simultaneously maximum values, by this two The number sequencing of a sub-pix blue data selects complementary color position, such as B1=B2 and is the two sub-pix blue numbers Maximum value in then selects the corresponding position B1 as complementary color position；

(2c) determines complementary color value size (namely sub-pix color data values size or updated value after complementary color processing)

(i) work as R, B component is required to complementary color

Then complementary color value size are as follows:

G [i, j]=(G0 [i, j]+G0 [a]+G0 [b])/3

R [a]=(R0 [i, j]+R0 [a]+R0 [b])/3

B [b]=(B0 [i, j]+B0 [a]+B0 [b])/3

(ii) when R component needs complementary color, B component not to need complementary color

Then complementary color value size are as follows:

G [i, j]=(G0 [i, j]+G0 [a])/2

R [a]=(R0 [i, j]+R0 [a])/2

(iii) when B component needs complementary color, R component not to need complementary color

Then complementary color value size are as follows:

G [i, j]=(G0 [i, j]+G0 [b])/2

B [b]=(B0 [i, j]+B0 [b])/2

(iv) when R, B component do not need complementary color, then without calculating complementary color value, initial value is directlyed adopt；

Above-mentioned G0 [a] is not sample green data, R0 in the three primary colours data of the original pixels of the position a in original image [a] is the initial value of the sub-pix red data of the position a, the three primary colours number that B0 [a] is the original pixels of the position a in original image Do not sample blue data in, G0 [b] be in original image in the three primary colours data of the original pixels of the position b do not sample it is green Chromatic number according to, R0 [b] be in the three primary colours data of the original pixels of the position b in original image do not sample red data, B0 [b] is The initial value of the sub-pix blue data of the position b.

(3) in Fig. 6 sub-pix green (G2) data G [i, j] carry out complementary color processing: mark off one comprising G2 and and its The block of pixels of adjacent at least one R and at least one B, such as nine grids block of pixels shown in the left side Fig. 7 c, if sub-pix is green The initial value of color color data G [i, j] is G0 [i, j] and sets with sub-pix green data G [i, j] in corresponding original image Original pixels [i, j] three primary colours pixel in non-Sample Color Data namely red data and blue data be respectively R0 [i, j] and B0 [i, j]；For purposes of illustration only, the center sub-pix green data on the left of Fig. 7 c in nine grids is labeled as G0, other four A sub-pix green data is respectively labeled as G1, G2, G3, and G4, two sub-pix red datas are labeled as R1, R2, two sub- pictures Plain blue data is respectively labeled as B1, B2, the result after label on the right side of Fig. 7 c shown in.Then:

(3a) judges whether to need complementary color

Judge whether to need to mend the condition of R component: R0 [i, j] > R1&&R0 [i, j] > R2, namely judges nine grids pixel Whether all sub-pix red datas in block are both less than R0 [i, j], if both less than R0 [i, j], then it represents that need to carry out R points Measure complementary color；

Judge whether to need to mend the condition of B component: B0 [i, j] > B1&&B0 [i, j] > B2, namely judges nine grids pixel Whether all sub-pix blue datas in block are both less than B0 [i, j], if both less than B0 [i, j], then it represents that need to carry out B points Measure complementary color；

(3b) determines complementary color position

The present embodiment is designed to R1, and the corresponding position of maximum value carries out complementary color in two red sub-pixel data of R2.If a Indicate R1, the corresponding position of maximum value in two red sub-pixel data of R2, if two positions are simultaneously maximum values, by this two The number sequencing of a red sub-pixel data selects complementary color position, such as R1=R2 and is the two red sub-pixel numbers Maximum value in then selects the corresponding position R1 as complementary color position；

The present embodiment is designed to B1, and the corresponding position of maximum value carries out complementary color in two blue subpixels data of B2.If b Indicate B1, the corresponding position of maximum value in two blue subpixels data of B2, if two positions are simultaneously maximum values, by this two The number sequencing of a blue subpixels data selects complementary color position, such as B1=B2 and is the two blue subpixels numbers Maximum value in then selects the corresponding position B1 as complementary color position；

(3c) determines complementary color value size (namely sub-pix color data values size or updated value after complementary color processing)

(i) work as R, B component is required to complementary color

Then complementary color value size are as follows:

G [i, j]=(G0 [i, j]+G0 [a]+G0 [b])/3

R [a]=(R0 [i, j]+R0 [a]+R0 [b])/3

B [b]=(B0 [i, j]+B0 [a]+B0 [b])/3

(ii) when R component needs complementary color, B component not to need complementary color

Then complementary color value size are as follows:

G [i, j]=(G0 [i, j]+G0 [a])/2

R [a]=(R0 [i, j]+R0 [a])/2

(iii) when B component needs complementary color, R component not to need complementary color

Then complementary color value size are as follows:

G [i, j]=(G0 [i, j]+G0 [b])/2

B [b]=(B0 [i, j]+B0 [b])/2

(iv) when R, B component do not need complementary color, then without calculating complementary color value, initial value is directlyed adopt；

Above-mentioned G0 [a] is not sample green data, R0 in the three primary colours data of the original pixels of the position a in original image [a] is the initial value of the sub-pix red data of the position a, B0 [a] is in original image in the three primary colours of the original pixels of the position a Do not sample blue data, G0 [b] is not sample green number in the three primary colours data of the original pixels of the position b in original image According to, R0 [b] be in the three primary colours data of the original pixels of the position b in original image do not sample red data, B0 [b] is b The initial value for the sub-pix blue data set.

(4) complementary color processing is carried out to sub-pix blue data B [i, j] in Fig. 6: marks off one and includes B and adjacent thereto At least one R and at least one G (G1 or G2) block of pixels, such as on the left of Fig. 7 d shown in nine grids block of pixels, if sub- picture The initial value of plain blue data B [i, j] is B0 [i, j] and sets with sub-pix blue data B [i, j] in corresponding original image Original pixels [i, j] three primary colours data in non-Sample Color Data namely red data and green data be respectively R0 [i, j] and G0 [i, j]；For purposes of illustration only, the center sub-pix blue data on the left of Fig. 7 d in nine grids is labeled as B0, four Asias Pixel green data is respectively labeled as G1, G2, G3, G4 and four sub-pix red datas and is respectively labeled as R1, R2, R3 and R4, result after label on the right side of Fig. 7 d shown in.Then:

(4a) judges whether to need complementary color

Judge whether to need to mend the condition of R component: R0 [i, j] > R1&&R0 [i, j] > R2&&R0 [i, j] > R3&&R0 [i, j] > R4, namely judge whether all sub-pix red datas in nine grids block of pixels are both less than R0 [i, j], if all Less than R0 [i, j], then it represents that need to carry out R component complementary color；

Judge whether to need to mend the condition of G component: G0 [i, j] > G1&&G0 [i, j] > G2&&G0 [i, j] > G3&&G0 [i, j] > G4, namely judge whether all sub-pix green datas in nine grids block of pixels are both less than G0 [i, j], if all Less than G0 [i, j], then it represents that need to carry out G component complementary color；

(4b) determines complementary color position

The present embodiment is designed to R1, R2, R3, and the corresponding position of maximum value is mended in tetra- sub-pix red datas of R4 Color.If a indicates R1, R2, R3, the corresponding position of maximum value in tetra- sub-pix red datas of R4, if there is greater than two positions same When be maximum value, then select complementary color position by the number sequencing of this four sub-pix red datas, for example, as R3=R4 and For the maximum value in this four sub-pix red datas, then select the corresponding position R3 as complementary color position；

The present embodiment is designed to G1, G2, G3, and the corresponding position of maximum value is mended in tetra- sub-pix green datas of G4 Color.If b indicates G1, G2, G3, the corresponding position of maximum value in tetra- sub-pix green datas of G4, if there is greater than two positions same When be maximum value, then select complementary color position by the number sequencing of this four sub-pix green datas, for example, as G3=G4 and For the maximum value in this four sub-pix green datas, then select the corresponding position G3 as complementary color position；

(4c) determines complementary color value size (namely sub-pix color data values size or updated value after complementary color processing)

(i) work as R, G component is required to complementary color

Then complementary color value size are as follows:

B [i, j]=(B0 [i, j]+B0 [a]+B0 [b])/3

R [a]=(R0 [i, j]+R0 [a]+R0 [b])/3

G [b]=(G0 [i, j]+G0 [a]+G0 [b])/3

(ii) when R component needs complementary color, G component not to need complementary color

Then complementary color value size are as follows:

B [i, j]=(B0 [i, j]+B0 [a])/2

R [a]=(R0 [i, j]+R0 [a])/2

(iii) when G component needs complementary color, R component not to need complementary color

Then complementary color value size are as follows:

B [i, j]=(B0 [i, j]+B0 [b])/2

G [b]=(G0 [i, j]+G0 [b])/2

(iv) when R, G component do not need complementary color, then without calculating complementary color value, initial value is directlyed adopt；

Above-mentioned B0 [a] is not sample blue data, R0 in the three primary colours data of the original pixels of the position a in original image [a] is the initial value of the sub-pix red data of the position a, the three primary colours number that G0 [a] is the original pixels of the position a in original image Green data is not sampled in, and B0 [b] is not sample indigo plant in the three primary colours data of the original pixels of the position b in original image Chromatic number according to, R0 [b] be in the three primary colours data of the original pixels of the position b in original image do not sample red data, G0 [b] is The initial value of the sub-pix green data of the position b.

Pass through " red-blue two is green " four in each pixel (each LED display unit) to LED display unit array After a sub-pix carries out at above-mentioned complementary color, the corresponding sub-pix color data of four sub-pixes in each pixel of final output into Row addressing display, wherein the calculated result value obtained after above-mentioned complementary color processing is exported for R, B color data, and for G Color data final output is the half (namely half value) of the calculated result value obtained after above-mentioned complementary color is handled.

In addition, it is noted that above-mentioned complementary color processing scheme is illustrated as an example using nine grids block of pixels, And nine grids block of pixels (3 × 3 block of pixels) is by the center sub-pix color as complementary color processing target sub-pix color data Data and it is adjacent thereto around eight sub-pix color data composition, in which case, then to the Central Asia Fig. 6 pixel color number According to the first row, first row, last line, last column without complementary color processing；Namely the first row in Fig. 6, first row, most A line, last sub-pix color data arranged carry out (that is, edge sub-pixel color data) not as complementary color processing afterwards Target sub-pix color data.It is of course also possible to use 2 × 2 block of pixels (including complementary color processing target sub-pix color data and Three sub-pix color data comprising other two kinds of color types adjacent thereto) or triangular pixel block (including at complementary color Manage two sub-pix color data of target sub-pix color data and other two kinds of color types adjacent thereto) carry out complementary color Processing, and in this case, then complementary color processing can be carried out to edge sub-pixel color data.In addition, it's also worth mentioning that In embodiments of the present invention, complementary color processing is carried out to each sub-pix color data in Fig. 6, no matter edge sub-pixel number of colours According to whether complementary color processing target sub-pix color data is done, final data value all will be referred to as sub-pix face after complementary color processing Chromatic number evidence.

In addition, the process of complementary color processing is carried out according to sub-pix color data (RG1G2B) after the aforementioned sampling in Fig. 6, The LED display methods based on sub-pix down-sampling of the embodiment of the present invention can be summarized as including step shown in Fig. 8.Specifically, The LED display methods based on sub-pix down-sampling of the present embodiment includes: reception original image, carries out sub-pix to original image Down-sampling, the sub-pix color data obtained to sub-pix down-sampling carry out complementary color processing, and that treated is sub- according to complementary color Pixel color data performs image display.It wherein, further include to original graph before carrying out sub-pix down-sampling to original image As carrying out Gamma transformation, anti-Gamma transformation is correspondingly carried out before performing image display.More specifically, to any one mesh Mark sub-pix color data, which carries out complementary color processing, to be marked off comprising the target sub-pix color data and adjacent thereto more The block of pixels of a sub-pix color data, each sub-pix color data to be processed (namely the mesh being then based in the block of pixels Mark sub-pix color data and with its be different colours type sub-pix color data) and with each sub-pix color to be processed Non- Sample Color Data in the three primary colours data of the corresponding multiple original images of data judge whether to need complementary color and Complementary color position and complementary color value size are determined when needing complementary color, detail can refer to aforementioned sub-pix red data (R), sub- picture The method that plain green data (G1), sub-pix green data (G2) and sub-pix blue data (B) carry out complementary color processing, herein not It repeats again.And the sub-pix color data except the sub-pix color data to be processed unless each in block of pixels is then and target Asia Pixel color data is same color type, is carrying out complementary color processing to the target sub-pix color data in current pixel block When wouldn't process.

Fig. 9 is referred to, is a kind of module of display control unit based on sub-pix down-sampling of the embodiment of the present invention Schematic diagram.As shown in figure 9, display control unit 90 includes: sub-pix downsampling unit 91, the processing of sub-pix color data complementary color Unit 93 and display driver element 95.Sub-pix downsampling unit 91 is used for three of each pixel in the original image of input Primary colours color data carries out down-sampling to obtain sub-pix color data；Sub-pix color data complementary color processing unit 93 for pair Each sub-pix color data carries out complementary color processing to obtain sub-pix color data after complementary color processing；Display driver element 95 is used Sub-pix color data drive control display panel 100 performs image display after being handled according to the complementary color, wherein display surface Plate 100 includes to include arranging in rectangle in the aforesaid plurality of LED display unit P and each LED display unit P of array manner arrangement Column a first color physics sub-pix (such as red LED), a second color physics sub-pix (such as blue led) and Two the second color physics sub-pixes (such as green LED)；Certainly, display panel 100 is also possible to include other similar show Show unit and is not limited to LED display unit.

More specifically, sub-pix downsampling unit 91 for example for obtaining in original image per 4 adjacent pixels respectively A corresponding color data is obtained to obtain the green four sub-pix color data of a red-blue two.

Sub-pix color data complementary color processing unit 93 carries out at complementary color to any one target sub-pix color data When reason, mark off comprising the target sub-pix color data and multiple sub- pictures comprising other two kinds of color types adjacent thereto The block of pixels of plain color data, multiple sub-pix color data to be processed (namely the target Asia picture being then based in the block of pixels Plain color data and with its be different colours type sub-pix color data) and with the multiple sub-pix number of colours to be processed According to the non-Sample Color Data in the three primary colours data of corresponding multiple original pixels judge whether to need complementary color and Judgement needs to carry out to determine complementary color position and complementary color value size when complementary color, and detail can refer to aforementioned sub-pix red data (R), sub-pix green data (G1), sub-pix green data (G2) and sub-pix blue data (B) carry out the side of complementary color processing Method, details are not described herein.

The sub-pix after obtaining complementary color processing by sub-pix color data complementary color processing unit 93 of display driver element 95 After color data, four physics sub-pixes (red-blue two is green) in each pixel of final output (display unit) are respectively corresponded Complementary color processing after sub-pix color data to display panel 100 be addressed to show；Wherein, for R, B color data, output Sub-pix color data values after complementary color processing；For G color data, final output is sub-pix number of colours after complementary color processing According to the half (namely half value) of value.

In conclusion the above embodiment of the present invention is using green four physics sub-pixes (such as LED) layout of a red-blue two Mode, and combine sub-pix down-sampling technology and sub-pix color data complementary color Processing Algorithm to perform image display, therefore can Effectively to promote brightness of display screen resolution ratio.

Specific case used herein is to the present invention is based on the displays of the LED display methods and LED of sub-pix down-sampling to control The principle and embodiment of device processed, LED structure and LED display unit is expounded, and the explanation of above embodiments is only used In facilitating the understanding of the method and its core concept of the invention；At the same time, for those skilled in the art, according to the present invention Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as Limitation of the present invention, protection scope of the present invention should be subject to the attached claims.

Claims (15)

1. a kind of LED display methods based on sub-pix down-sampling, is suitable for the application of in a kind of LED display unit array, the LED Array of display cells includes multiple LED display units；It is characterized in that, each described LED display unit includes arranging in rectangle A first color LED, a second color LED and the two third color LED of column, and LED, described two third colors In on same diagonal line；The LED display methods comprising steps of

(S1) original image for receiving input, wherein the original image includes corresponding with multiple original pixels multiple three Primary colours data；

(S2) sub-pix down-sampling is carried out to obtain corresponding to the multiple of each LED display unit to the original image Sub-pix color data；

(S3) complementary color is carried out to the multiple sub-pix color data of the multiple LED display unit to handle to obtain each Sub-pix color data after multiple complementary colors processing of the LED display unit；And

(S4) sub-pix color data respectively drives phase after being handled according to the multiple complementary color of LED display unit described in each The first color LED, the second color LED and described two third color LED in corresponding LED display unit carry out figure As display.

2. LED display methods as described in claim 1, which is characterized in that the step (S2) includes:

Sample one in each of every four adjacent original pixels of original image three primary colours data of original pixels A color data, to obtain and the first color LED, the second color LED in corresponding LED display unit and described Two third color LED distinguish corresponding four sub-pix color data.

3. LED display methods as described in claim 1, which is characterized in that the step (S3) includes:

When carrying out complementary color processing to target sub-pix color data, mark off comprising the target sub-pix color data and The block of pixels of the multiple sub-pix color data adjacent with the target sub-pix color data and based in the block of pixels Multiple sub-pix color data to be processed and multiple original images corresponding with the multiple sub-pix color data to be processed Non- Sample Color Data in the three primary colours data of element judges whether to need to carry out complementary color and determine when needing to carry out complementary color Complementary color position and complementary color value size, wherein the multiple sub-pix color data to be processed includes the target sub-pix number of colours According to with the target sub-pix color data be different colours type sub-pix color data.

4. LED display methods as claimed in claim 3, which is characterized in that judge whether to need the method for carrying out complementary color include:

Judge the first non-sample color number in the three primary colours data of the corresponding original pixels of the target sub-pix color data According to whether be greater than in the block of pixels it is all with the described first non-Sample Color Data be same color type sub-pix colors Data, and determination needs to carry out the first component complementary color when judging result is "Yes"；And

Judge the second non-sample color number in the three primary colours data of the corresponding original pixels of the target sub-pix color data According to whether be greater than in the block of pixels it is all with the described second non-Sample Color Data be same color type sub-pix colors Data, and determination needs to carry out second component complementary color when judging result is "Yes".

5. LED display methods as claimed in claim 4, which is characterized in that the method for determining complementary color position includes:

When determination needs to carry out the first component complementary color, all in the block of pixels and the described first non-Sample Color Data is found out It is determined for the maximum value in the sub-pix color data of same color type and by the corresponding first position of the maximum value For the first component complementary color position；And

When determination needs to carry out second component complementary color, all in the block of pixels and the described second non-Sample Color Data is found out It is determined for the maximum value in the sub-pix color data of same color type and by the corresponding second position of the maximum value For second component complementary color position.

6. LED display methods as claimed in claim 5, which is characterized in that the method for determining complementary color value size includes:

(i) when determination needs to carry out the first component and second component complementary color,

By the target sub-pix color data, the three primary colours of corresponding two original pixels in first and second described position Being averaged in data with two non-Sample Color Data threes that the target sub-pix color data is same color type It is worth the updated value as the target sub-pix color data,

By the corresponding sub-pix color data in the first position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the first position in three primary colours data is the non-sample color number of same color type According to the sub-pix number of colours corresponding with the first position in the three primary colours data of, corresponding original pixels in the second position According to the average value of the non-Sample Color Data three for same color type as the corresponding sub-pix color in the first position The updated value of data,

By the corresponding sub-pix color data in the second position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the second position in three primary colours data is the non-sample color number of same color type According to the sub-pix number of colours corresponding with the second position in the three primary colours data of, corresponding original pixels in the first position According to the average value of the non-Sample Color Data three for same color type as the corresponding sub-pix color in the second position The updated value of data；

(ii) when determination needs to carry out the first component without carrying out second component complementary color,

By in the target sub-pix color data, the three primary colours data of the corresponding original pixels in the first position with it is described Target sub-pix color data is the average value of both non-Sample Color Datas of same color type as target Asia picture The updated value of plain color data,

By the corresponding sub-pix color data in the first position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the first position in three primary colours data is the non-sample color number of same color type Updated value according to the average value of the two as the corresponding sub-pix color data in the first position；

(iii) when determination needs to carry out second component without carrying out the first component complementary color,

By in the target sub-pix color data, the three primary colours data of the corresponding original pixels in the second position with it is described Target sub-pix color data is the average value of both non-Sample Color Datas of same color type as target Asia picture The updated value of plain color data,

By the corresponding sub-pix color data in the second position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the second position in three primary colours data is the non-sample color number of same color type Updated value according to the average value of the two as the corresponding sub-pix color data in the second position.

7. LED display methods as claimed in claim 3, which is characterized in that the block of pixels is with the target sub-pix face The nine grids block of pixels of color data grid technology, and the target sub-pix color data is non-edge sub-pix color data.

8. LED display methods as described in claim 1, which is characterized in that the step (S4) includes:

Described first is corresponded in sub-pix color data after exporting the multiple complementary color processing of each LED display unit Sub-pix color data drives the first color LED and described the after the processing of the complementary color of color LED and the second color LED Second colors LED, and export it is right in sub-pix color data after the multiple complementary color processing of each LED display unit The half value of sub-pix color data respectively drives described two third colors after answering the complementary color of described two third color LED to handle LED。

9. LED display methods as described in claim 1, which is characterized in that the first color LED is red LED, described the Second colors LED is blue led, and described two third color LED are green LED.

10. a kind of display control unit based on sub-pix down-sampling is performed image display suitable for driving display panel, described aobvious Show that panel includes the multiple display units arranged with array manner；It is characterized in that, each described display unit includes being in square A first color physics sub-pix, a second color physics sub-pix and the two third color physics Asia pictures of shape arrangement Element, and described two third color physics sub-pixes are located on same diagonal line；The display control unit includes:

Sub-pix downsampling unit, for carrying out sub-pix down-sampling to the original image of input to obtain corresponding to each institute Multiple sub-pix color data of display unit are stated, wherein the original image includes corresponding with multiple original pixels more A three primary colours data；

Sub-pix color data complementary color processing unit, for the multiple sub-pix color data to the multiple display unit Complementary color processing is carried out to obtain sub-pix color data after multiple complementary colors processing of each display unit；

Display driver element, for sub-pix color data after being handled according to the multiple complementary color of display unit described in each Respectively drive the first color physics sub-pix in corresponding display unit, the second color physics sub-pix and described Two third color physics sub-pixes perform image display；

Wherein, the display driver element is specifically used for: after the multiple complementary color processing for exporting each display unit The complementary color processing of the first color physics sub-pix and the second color physics sub-pix is corresponded in sub-pix color data Sub-pix color data drives the first color physics sub-pix and the second color physics sub-pix afterwards, and output is often Described two third color physics are corresponded in sub-pix color data after the multiple complementary color processing of one display unit The half value of sub-pix color data respectively drives described two third color physics sub-pixes after the complementary color processing of sub-pix.

11. display control unit as claimed in claim 10, which is characterized in that the sub-pix downsampling unit is specifically used In:

Sample one in each of every four adjacent original pixels of original image three primary colours data of original pixels A color data, to obtain and the first color physics sub-pix, the second color physics in corresponding display unit Sub-pix and described two third color physics sub-pixes distinguish corresponding four sub-pix color data.

12. display control unit as claimed in claim 10, which is characterized in that the sub-pix color data complementary color processing is single Member is specifically used for:

When carrying out complementary color processing to target sub-pix color data, mark off comprising the target sub-pix color data and The block of pixels of the multiple sub-pix color data adjacent with the target sub-pix color data and based in the block of pixels Multiple sub-pix color data to be processed and multiple original images corresponding with the multiple sub-pix color data to be processed Non- Sample Color Data in the three primary colours data of element judges whether to need to carry out complementary color and determine when needing to carry out complementary color Complementary color position and complementary color value size, wherein the multiple sub-pix color data to be processed includes the target sub-pix number of colours According to with the target sub-pix color data be different colours type sub-pix color data.

13. display control unit as claimed in claim 12, which is characterized in that the sub-pix color data complementary color processing is single What member used judges whether to need the method for carrying out complementary color to include:

Judge the first non-sample color number in the three primary colours data of the corresponding original pixels of the target sub-pix color data According to whether be greater than in the block of pixels it is all with the described first non-Sample Color Data be same color type sub-pix colors Data, and determination needs to carry out the first component complementary color when judging result is "Yes"；And

Judge the second non-sample color number in the three primary colours data of the corresponding original pixels of the target sub-pix color data According to whether be greater than in the block of pixels it is all with the described second non-Sample Color Data be same color type sub-pix colors Data, and determination needs to carry out second component complementary color when judging result is "Yes".

14. display control unit as claimed in claim 13, which is characterized in that the sub-pix color data complementary color processing is single The method of determination complementary color position that member uses includes:

When determination needs to carry out the first component complementary color, all in the block of pixels and the described first non-Sample Color Data is found out It is determined for the maximum value in the sub-pix color data of same color type and by the corresponding first position of the maximum value For the first component complementary color position；And

When determination needs to carry out second component complementary color, all in the block of pixels and the described second non-Sample Color Data is found out It is determined for the maximum value in the sub-pix color data of same color type and by the corresponding second position of the maximum value For second component complementary color position.

15. display control unit as claimed in claim 14, which is characterized in that the sub-pix color data complementary color processing is single The method of determination complementary color value size that member uses includes:

(i) when determination needs to carry out the first component and second component complementary color,

By the target sub-pix color data, the three primary colours of corresponding two original pixels in first and second described position Being averaged in data with two non-Sample Color Data threes that the target sub-pix color data is same color type It is worth the updated value as the target sub-pix color data,

By the corresponding sub-pix color data in the first position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the first position in three primary colours data is the non-sample color number of same color type According to the sub-pix number of colours corresponding with the first position in the three primary colours data of, corresponding original pixels in the second position According to the average value of the non-Sample Color Data three for same color type as the corresponding sub-pix color in the first position The updated value of data,

By the corresponding sub-pix color data in the second position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the second position in three primary colours data is the non-sample color number of same color type According to the sub-pix number of colours corresponding with the second position in the three primary colours data of, corresponding original pixels in the first position According to the average value of the non-Sample Color Data three for same color type as the corresponding sub-pix color in the second position The updated value of data；

(ii) when determination needs to carry out the first component without carrying out second component complementary color,

By in the target sub-pix color data, the three primary colours data of the corresponding original pixels in the first position with it is described Target sub-pix color data is the average value of both non-Sample Color Datas of same color type as target Asia picture The updated value of plain color data,

By the corresponding sub-pix color data in the first position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the first position in three primary colours data is the non-sample color number of same color type Updated value according to the average value of the two as the corresponding sub-pix color data in the first position；

(iii) when determination needs to carry out second component without carrying out the first component complementary color,

By in the target sub-pix color data, the three primary colours data of the corresponding original pixels in the second position with it is described Target sub-pix color data is the average value of both non-Sample Color Datas of same color type as target Asia picture The updated value of plain color data,

By the corresponding sub-pix color data in the second position, the target sub-pix color data corresponding original pixels Sub-pix color data corresponding with the second position in three primary colours data is the non-sample color number of same color type Updated value according to the average value of the two as the corresponding sub-pix color data in the second position.