CN101325027B

CN101325027B - Color flat panel display sub-pixel arrangements and sub-pixel coloring device

Info

Publication number: CN101325027B
Application number: CN200810130399XA
Authority: CN
Inventors: 卡戴维·海伦·布朗埃利奥特; 托马斯·莱奥蒂·克雷德尔; 迈克·弗朗西斯·希金斯
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Display Co Ltd
Priority date: 2002-01-07
Filing date: 2002-12-13
Publication date: 2012-03-28
Anticipated expiration: 2022-12-13
Also published as: CN100541587C; CN101325025A; CN101325027A; CN101325026A; CN101325028B; CN101325025B; CN101325026B; CN101325028A; CN1998041A

Abstract

The invention discloses a display composed of a plurality of sub-pixel groups, the sub-pixel group is comprised of 8 sub-pixels; wherein each sub-pixel refers to one sub-pixel of a first color sub-pixel, a second color sub-pixel and a third sub-pixel; the sub-pixel group is comprised of 4 the first color sub-pixels, 2 the second color sub-pixels and 2 the third color sub-pixels; the second and the third color sub-pixel mainly compose as a grid patter. The invention publishes various embodiments of one 8 sub-pixel group, the 8 sub-pixel group can be composed of third color sub-pixels with a shaded sub-pixel. In the 8 sub-pixel group, the amount of shaded sub-pixels is twice of the amount of another two shaded sub-pixels. The invention also discloses various embodiments for shading sub-pixel in the sub-pixel groups.

Description

The arrangement of subpixels of color flat panel display and sub-pixel rendering setting

The application is that one Chinese patent application number is 02826863.6, the application people is Clairvoyante Inc, denomination of invention dividing an application for the patented claim of " arrangement of subpixels of color flat panel display and sub-pixel rendering setting ".

Technical field

The application is relevant with the improvement of display design, particularly, arranges, shows that with colour element the improvement of used addressing method and video data format conversion method is relevant.

Background technology

Full color perception in the eyes is to be produced by three types of color sensitization neurocyte that are referred to as " cone ".These three types of photosensory cells are sensitive to the visible light of different wave length respectively: long, in and short (correspond respectively to " red ", " green " reaches " indigo plant ").The relative density of these three kinds of photosensory cells is obviously different each other.Red photosensory cell is more slightly than green receptor.Compare with red photosensory cell or green receptor, blue receptor is considerably less.

Summary of the invention

The sensory channel that the human visual system handles the detected information of eyes comprises: brightness, colourity and motion.Motion is important to the flicker threshold value only for the imaging system deviser.Therefore luminance channel is only accepted the input from redness and green receptor, is " colour blindness ".Luminance channel is with the such mode process information of the contrast that can strengthen the edge.Chrominance channel does not have the contrast on border humidification.Because luminance channel is used and has been strengthened each redness and green receptor, so the resolution of luminance channel is than the high several times of resolution of colourity passage.Blue receptor can be ignored to the contribution of brightness sensation.Therefore luminance channel is just like same spatial frequency signal bandpass filter.When peak response appears at 35 cycles/(cycle/0).It has limited the response when 0 cycles/and 50 cycles/on transverse axis and the Z-axis.This just means that this luminance channel only can differentiate two interregional relative brightnesses in the ken, and can't differentiate absolute brightness.In addition, if a certain details surpasses 50 cycles/, will mix.On a little higher than Z-axis of limit on the transverse axis.Limit on the inclined shaft is then lower.

Chrominance channel can further be divided into two subchannels, and Given this we just can see whole colors.These passages are different from luminance channel fully, and they are equivalent to two low pass filters.One of them can differentiate the color of object at any time, and no matter this object has much in our ken.Red/green colourity subchannel resolution limiting is to cross in 8 cycles, and yellow/chroma blue subchannel resolution then is cycles/of a specified duration.Therefore, for the spectators that great majority examine, almost can't notice by red/green or yellow/the error that blue resolution caused of low octave; Just as not having fully; As Xerox and NASA, and that kind that experiment confirmed of Ames Research Center (referring to R.Martin, J.Glue; J.Madmer Detectability of Reduced BluePixel Count in Projection Displays, SID Digest 1993).

Luminance channel is confirmed image detail through analysis space frequency Fourier transform component.By means of signal theory, any oneself know signal can be represented as a series of various amplitudes and frequency sine wave and.Say that from the arithmetic angle this process that component sine waves of certain known signal are understood is called Fourier transform.The human visual system on the two dimensional image signal in response to these component sine waves.

Color perception receives the influence of a kind of being referred to as " assimilation " effect or Von Bezold mixed color effect.The pixel (or sub-pixel or luminophor) why Here it is separates on the display can be felt as the reason of color mixture.Mixed color effect betides in a certain given angular distance scope in the visual field.Because blue receptor is rare relatively, therefore, for blue receptor, the angular distance that colour mixture occurs is bigger than red or green.This distance is about 0.25 ° to blue, and for red or green, is about 0.12 °.At 12 inches viewing distance place, 0.25 ° of 50mils (1,270 μ) that is equivalent on the display.Therefore, if blue pixel pitch is less than half the (625 μ) of colour mixture spacing, just color can be mixed and can not be lost picture quality.This mixed effect is directly related with above-described colourity subchannel resolution limiting.Be lower than resolution limiting, just can see separate colors, be higher than resolution limiting, just can see color mixture.

The present invention provides a kind of display, is made up of a large amount of sub-pixel groups, and said sub-pixel group is made up of 8 subpixels;

Wherein said each sub-pixel is meant the subpixels in first color sub-pixel, second color sub-pixel and the 3rd color sub-pixel;

Wherein said sub-pixel group is to be made up of 4 said first color sub-pixel, 2 said second color sub-pixel and 2 said the 3rd color sub-pixel;

The wherein said second and the 3rd color sub-pixel forms the checkerboard style substantially.

Description of drawings

The accompanying drawing that is combined in the instructions and constitutes the part of this instructions has been introduced various ways of realization and embodiment.

Figure 1A is depicted as on a kind of display device of the copied cells with 8 subpixels, a kind of aligning method of four colour primitive elements in a kind of array in plane.

Figure 1B be depicted as and have 8 subpixels (8 subpixels be through select and definite Figure 1A shown in 8 subpixels in the sub-pixel of four same colors of conduct obtain) a kind of display equipment of copied cells on, a kind of aligning method of three colour primitive elements in a kind of array in plane.

Fig. 1 C be depicted as and have 8 subpixels (8 subpixels be through select and definite Figure 1A shown in 8 subpixels in sub-pixel and the width that reduces them of four same colors of conduct obtain) a kind of display equipment of copied cells on, a kind of aligning method of three colour primitive elements in a kind of array in plane.

Shown in Figure 2 is a kind of electronic driver aligning method graphic of the arrangement of subpixels mode shown in Figure 1A Figure 1B and Fig. 1 C.

Fig. 3 A, Fig. 3 B are depicted as the relative polarity to the active matrix point inversion driving method of a kind of LCD of the aligning method that adopts the color sub-pixel shown in Fig. 1 C and drive arrangement shown in Figure 2.

Fig. 4 A, Fig. 4 B, Fig. 4 C and Fig. 4 D are depicted as one group of independent and overlapping green, blueness and red resample area for the arrangement of subpixels shown in Fig. 1 C.

Fig. 5 A, Fig. 5 B, Fig. 5 C and Fig. 5 D are depicted as green, blue and resample area redness of set of diagrams 4A Fig. 4 B, Fig. 4 C and Fig. 4 D, and the arrangement of subpixels shown in the overlay 1C covers to show their relative position.

Fig. 5 E is depicted as two logical pixel that show in the arrangement shown in Fig. 1 C, and these two pixels are from the sub-pixel rendering operation of the resample area shown in Fig. 4 D, to produce.

Fig. 6 A is depicted as two logical pixel that show in the arrangement shown in Fig. 1 C, and these two pixels are from the sub-pixel rendering operation of the resample area shown in Fig. 6 D, to produce.

Fig. 6 B, Fig. 6 C and Fig. 6 D are depicted as the green resample area shown in Fig. 4 A that is respectively a group of blue and resample area redness and the arrangement of subpixels shown in the overlay 1C.

Fig. 7 A be depicted as Fig. 4 A Fig. 4 B and Fig. 4 C green, blue and resample area redness of a group of expression respectively, and overlapping to show their relative position.

Fig. 7 B is depicted as the arrangement of the resample area shown in Fig. 7 A, this arrangement by the arrangement of subpixels shown in Fig. 1 C overlapping to show their relative position.

Fig. 8 A and Fig. 8 B are depicted as other embodiment of 8 one group arrangement of subpixels with the various perpendicular displacements of sub-pixel.

Fig. 9 A and Fig. 9 B are depicted as other embodiment of 8 one group arrangement of subpixels of the various displacements of the main sub-pixel of division in the sub-pixel marshalling.

Figure 10 has described to comprise the technological system of sub-pixel rendering that drives the one flat plate that the embodiment that lifts that Clicks here processes that is applicable to.

Figure 11 A and Figure 11 B have described two certain embodiments of the flow diagram of operation software and hardware sub-pixel rendering on suitable display.

Figure 12 is a kind of specific embodiment of a demonstration realizing processing according to several kinds of embodiment disclosed herein.

Embodiment

This part is described various implementations and embodiment in detail, has mentioned the part example in the description of drawings.To adopt same reference number to refer to same parts or similar parts in the whole instructions as far as possible.

Arrangement of subpixels

Shown in Figure 1 for having a kind of arrangement mode that is organized as 110 the sub-pixel emitters that four look luminophors are arranged 100, each row crowd moves down a sub-pixel.Thereby the unit group 120 of having duplicated with having formed a bigger rectilinearity that constitutes by 8 subpixels.Introduced this an array in ' 094 application; ' 094 application simultaneously also discloses in copied cells the way of numerous sub-pixels being arranged to same color dot; Be a such example shown in Figure 1B, wherein four luminophors 106 in 8 luminophor repeat cell groups 120 have been set as same color.For example, these four luminophors 106 can be set as brightness adjustment (that is balance) green.For example, other sub-pixel emitters can be set as red 104 and blue 102.The zone of 106 sub-pixels that the brightness adjustment is green, promptly real estate is equivalent to the twice of redness 104 and blue 102 subpixel area, but is had same brightness by humorous being adjusted to red 104 sub-pixels.Whole green energy can be generated a gratifying white point by humorous being adjusted to when all sub-pixels are fully illuminated.In ' 094 application, disclosed before the method for this harmony green sub-pixels brightness.

Among Fig. 1 C, compare with 102 with other two sub-pixel emitters 104, the size and the aspect ratio of four sub-pixel emitters 106 all are reduced.

Minority sub-pixels

104 and 102 aspect ratio can be adjusted equally.In this example, the relative size of sub-pixel 106 is adjusted to the half the of

sub-pixel

104 or 102 sizes.As previously mentioned, color can be selected on demand.Most color sub-pixel occupy the second and the 4th row although it is pointed out that simultaneously that 8 one group the marshalling of duplicating is shown, also can satisfy most sub-pixels occupy first with tertial requirement.

Among another embodiment, color is configured to redness 104, blueness 102 and does not have the green 106 of luminance balance.Because green 106 quantity is the twice of redness 104 and blue 102 quantity, when the result is fully illuminated when all sub-pixels, just can see a gratifying white point.

In these two embodiment,, can adjust the sub-pixel aspect ratio for just array of display 100 comprises foursquare repeat cell groups 120.This need be placed on most color sub-pixel luminophors 106 on the square lattice, and minority

color sub-pixel luminophor

102 and 104 is placed on or almost is placed on one Utopian " checkerboard ".For the example of another kind of color settings embodiment, sub-pixel 106 can be configured to redness, and sub-pixel 104 can be configured to green, shown in Figure 1B and Fig. 1 C.Under this color assignment, the sub-pixel rendering algorithm that is about to below discuss will be worked similarly.

Not only green or red sub-pixel can be served as the plurality of colored sub-pixel of 8 one group marshalling 120; Blue subpixels also can be served as most sub-pixels.This type of aligning method was once disclosed in ' 738 provisional application.Therefore, all three kinds of color one redness, green and blue can take most sub-pixel position of marshalling.In addition, what deserves to be mentioned is that when these color one redness, when green and blue is used to present embodiment is described, on behalf of the suitable Color Range one of a demonstration, other suitable selections one of three kinds of colors can realize the object of the invention equally.

Shown in Figure 1A, Figure 1B and Fig. 1 C, sub-pixel is rectangular shaped substantially.Other shape of what deserves to be mentioned is sub-pixel also is possible, expects within the scope of the present invention.For example, if can produce, the shape of other numerous regular and irregulars of sub-pixel also is possible.Mode described herein can be used for marking sub-pixel rendering (SPR), but has only when the combination of 8 color sub-pixel is arranged in this mode.

Because the shape of sub-pixel can be various in the scope of the invention, the accurate position of sub-pixel also can be varied in the scope of the invention.For example, Fig. 8 A and 8B have described the marshalling that similar 8 subpixels constitute, and one of them or two most bars 106 have displacement (relatively or with other mode) for sub-pixel 102 and 104.Other perpendicular displacement is also possible.

Other embodiment of 8 one group marshalling is possible equally.Fig. 9 A and 9B have described a kind of 8 one group marshalling, and wherein most sub-pixels 106 are dispersed in the checkerboard that is made up of sub-pixel 102 and 104.Most sub-pixel position also have other arrangement mode in this type of checkerboard, and within the scope of the present invention.

Fig. 9 A and 9B can have cylindrical electrode to be zigzag to pass this display.Compare with the RGB stripe system that equal resolution is arranged, the cylindricality driver savings should be 1/3, the quantity of sub-pixel be approximately the RGB stripe system sub-pixel quantity 2/3.

Other embodiments of the invention also are possible.For example, whole 8 one group sub-pixel is organized into groups the effect of the row and column driver that can be rotated by 90 degrees reverses is connected to this group.The copending application of " color monitor with horizontal arrangement of subpixels and design " by name discloses this type of sub-pixel level aligning method, draws for referencial use here.

Another kind of luminophor " checkerboard " when being numbered 09/916,232 (' 232 application) in pending trial and the common transfer U.S. Patent application disclosed redness similar with green " checkerboard ".This patented claim by name " being used to have the arrangement of colour element of the full color imaging device of simplified addressing "; File July 25 calendar year 2001; Employing is numbered 10/150; The disclosed sub-pixel rendering technology of 355 U.S. Patent application, this patented claim " adopting the sub-pixel rendering method and system of gamma adjustment " by name, on May 17th, 2002 filed.These copending applications are drawn here does reference.The disclosed method of above-mentioned copending application can be made amendment and is used for embodiment disclosed herein.

Shown in Figure 2 is drive arrangement 200 a kind of graphic of the colorful light-emitting body arrangement of subpixels shown in Figure 1A, Figure 1B and Fig. 1 C.For simplicity, the sub-pixel in the son of giving an example identical with the quantity of the sub-pixel shown in Fig. 1 C.Because parts 210 can be represented one or several electronic component (diagram does not show this point in order to avoid masking device), these drive arrangement can be used in a large amount of display techniques.Particularly they can represent the capacitive display element that is used for passive addressing liquid crystal display (LCD) or electroluminescence demonstration (EL).Can also represent the gaseous state arresting element in the plasma display panel (PDP); The semiconductor diode element of passive addressed inorganic light-emitting diode or organic light emitting diode display; Transistor, electric storage means and the capacity cell of AMLCD (AMLCD) also can be represented multiple transistor, electric storage means and the light-emitting component of active matrix organic light-emitting H utmost point tube display (AMOLED).Generally speaking, can represent color sub-pixel and relevant electronic component thereof in other known or display technology of remaining to be invented.

Known in the industry driving timing and method can be used for above-mentioned NXM and drive matrix.But need be selected according to concrete color, particularly to adjust according to the color change of passing in dull and stereotyped checkerboard or the independent row.For example, can improve known in the industry technology be in the passive liquid crystal display " multi-line addressing " or " multi-line addressing " so that the marshalling of row be limited in the row combination of odd and even number.This will reduce potential color colour contamination and disturb, because in the row that two interactive color sub-pixels are arranged, have only a kind of color to be marked at every turn.

Inversion schemes is applicable among the embodiment disclosed herein, is pure zero and gas current thereby the electric polarity at these two ends, graphic crossover display terminal unit provides a time average at two ends, unit.Be two kinds " points be inverted " graphic 300 and 310 shown in Fig. 3 A and Fig. 3 B, refer to respectively " 1x1 " and " 2x1 " on the AMLCD that these two kinds graphic all can obtain good effect.Photoemissive when unbalance when taking place between the both positive and negative polarity, especially when the motion of the picture that shows on the eyes tracking screen, the graphic better effects if shown in Fig. 3 B.Every width of cloth chart has all shown the polarity of half display mark field, and the polarity of another half-court is opposite, and these alternately occur, and will draw pure zero current (zero Dc bias), and the insider knows this point.

Data Format Transform

To adopting the resample embodiment of Data Format Transform of technology of district, Fig. 4 A, Fig. 4 B and Fig. 4 C are depicted as respectively green 406 for green, blue and red plane, blue 402 and red 404 resample area array.Notice that each color resample area array 406,402 and 404 is made up of resample area 426,422 and 424, and each resample area all there is the resample points that is associated with it 416,412 and 414 separately.In each color plane, resample points 416,412 and 414 respectively with green 106, blue 102 and the relevant position of red 104 subpixel area be complementary; But inter-color-plane-phase relationship is then dispensable accurately for it.Number that what deserves to be mentioned is phase relation is can be arbitrarily.

Fig. 4 D is depicted as a kind of specific inter-color-plane-phase relationship 400.This relation can be used to change traditional square lattice red, green, blue look rgb format that is converged fully, and this form will show with the square green 106 sub-pixel grid shown in Fig. 1 C one to one.In this inter-color-plane-phase relationship 400, green 406, blueness 402 and red 404 resample area array are confirmed as substantially redness 414 and blue 412 resample points are overlapped with green 416 sampled points.This just makes green sub-pixels 106 as is located on redness 104 and the top of blue 102 sub-pixel checkerboards or closely related with it.

Be respectively the green 406 shown in Fig. 4 A Fig. 4 B and Fig. 4 C, blueness 402 and red 4D4 resample area array shown in Fig. 5 A, Fig. 5 B and Fig. 5 C; These arrays are overlapping by 100 of the arrangement of subpixels shown in Fig. 1 C, have the inter-color-plane-phase relationship 400 shown in Fig. 4 D.Fig. 5 D is depicted as the inter-color-plane-phase relationship 400 of Fig. 4 D, and it is overlapping by 100 of the arrangement of subpixels modes shown in Fig. 1 C.These charts only are indicative, just assist to understand resample points among this embodiment, reconstruction point, resample area with the relation between the sub-pixel position.

Having described in ' 355 patented claims of above institute reference and will having introduced the data format conversion is the method that is suitable for this display.Method is following: the sample region in secret of each data point of introducing three color pixel data is confirmed in (1); (2) confirm the resample area of each color sub-pixel in the display; (3) draw the coefficient of each resample area, this coefficient is made up of mark, and the denominator of mark is the function of resample area, and molecule is the function of the area of above-mentioned each sample region in secret, and sample region in secret possibly partially overlap with resample area; (4) the introducing pixel data and the multiplication of each sample region in secret are amassed; (5) each addition is obtained the brightness value of each resample area.

Investigate re-sampling operations " one to one " the format conversion situation shown in Fig. 4 D and Fig. 5 D, green plane conversion is a single optical filter.Red and blue color planes adopts and goes through a 3X3 filter factor matrix that draws in ' 355 applications:

0	0.125	0
			0.125	0.5	0.125
0	0.125	0

Fig. 5 E is depicted as the result who inserts two panchromatic input data pixels.These two pixels are converted into two groups of sub-pixels that insert with different amplitude, are called " logical pixel " 500.One of them logical pixel is positioned at the center of red sub-pixel 104 or near it.Green sub-pixels 106 is configured to 100% illumination.Red sub-pixel 104 is configured to 50% illumination, and four blue subpixels 102 on every side are configured to each illumination of 12.5%.The result is in the central authorities of redness 104 and green 106 sub-pixels, and human eye can be seen a white point.Another logical pixel 500 is arranged to 100% illumination with green sub-pixels 106 equally, and the blue subpixels 102 on next door is arranged to 50% illumination, and four red sub-pixel 104 on every side are arranged to each illumination of 12.5%.

Fig. 6 B and 6C are depicted as one selectable blue 602 and are expressed as square (60X) optical filter ([0.5 0.5]) here with red 604 color plane resample area array one---come to replace respectively the blueness 402 and red 404 resample area array shown in Fig. 4 B and Fig. 4 C.Fig. 6 D has explained a kind of inter-color-plane-phase relationship 610 that adopts green 406, blueness 602 and red 604 resample area array.Fig. 6 A is depicted as the re-sampling operations that adopts inter-color-plane-phase relationship 610 and inserts the logical pixel 600 that two input data format pixels produce, and inter-color-plane-phase relationship 610 is to get the input data of pixel one to one from having with green sub-pixels 106.These logical pixel 600 can have same relative position with two logical pixel 500 shown in Fig. 5 E.Simultaneously, its central authorities that also possibly be positioned at green box filter is complementary with an input pixel through regulating grid a little substantially.

The adaptivity filtering technique also can be able to embody in the disclosed herein pixel arrangement mode, will further specify this point below.

Say once again, the green resampling used a single optical filter.Red and blue color planes adopts a very simple 1x2 coefficient optical filter: [0.5 0.5].

Adopt a block adaptive optical filter to reach 3x3, use the minimum value of two row memories with regard to the sampling that does not require the input data.This adaptivity optical filter; Be numbered 10/215; Disclosed similar in the U.S. Patent application of pending trial and common transfer in the time of 843 (' 843 application); This patented claim is called " method and system with sub-pixel rendering of auto adapted filtering ", and on August 8th, 2002 filed, and was drawn for referencial use here.This test can be used the less sampling of input data, like the matrix of 1x3 or 1x2.Green data is sampled so that perpendicular line or oblique line are detected, and subsequently, the redness and the blue data of contiguous green test point possibly be changed.

Therefore; Whether an adaptivity filtering detects and can undertaken being detected to detect the high-contrast limit by following step: green data (G) and a minimum value and a maximal value are made comparisons; If G＜minimum value or G＞maximal value; A record value is set to 1 so, otherwise record value is set to 0; Relatively three continuous green data point record values judge to detect template (mask) whether the edge is detected; If detect, that just to redness and/or blue data take appropriate measures just like, use gamma or a kind of new value or different filter factors.

Following table has been explained this detection method:

Data (to three continuous points)	0.98	0.05	0.0
				Low detect (G, 0.1)	0	1	1
High detection (G＞0.9)	1	0	0
				Lower and not high	Correctly	Correctly	Correctly

For above-mentioned example, a limit is detected, and a large amount of selections can be arranged and/or take a large amount of measures in this point.For example, gamma correction can be applicable to the output to red and/or blue box filter; Perhaps adopt representative to require a new fixed value of the output of balance color; Or employing sub-pixel rendering (SPR) filtering.

In this case, similar to the detection method of black line, stain, black border and black oblique line, because have only three values to be detected:

In the last table, one side first row can be represented any black pixel that white pixel is arranged.Second row is represented a limit of a black line or stain.The third line is represented a limit of a black line of another position.Binary numeral is used as a coding of detection.

Detection method to white straight line, white point, white edge and white oblique line is shown in the following figure:

If it is correct detecting, for example, high detection was respectively for 240 and 16 (exceeding 255) with low the detection, and the output valve of using these limits of box filter (box filter) so possibly be 128+/-4 or other suitable values.Pattern match (patternmatching) is near the binary numeral of record value.128 one that is enhanced a suitable gamma power simply resets and can be outputed in the display.For example, for gamma-2.2, output valve is near 186.Even input has variation, this is an edge modifications item, therefore can use a fixed value and can not violate manifest error.Certainly, for more accurate, can use a gamma look-up tables equally.What deserves to be mentioned is difference but possibly similar modified value can be used for white edge and black border.What deserves to be mentioned is equally as the result who detects the edge, redness and/or blue data all can by a different set of filter factor handle just like, use (10) filtering (being single filtering), it can effectively close the sub-pixel rendering to that pixel value.

Above-mentioned detection was mainly to be to be directed against green test in the past, and was red and blue with aftertreatment.As selection, red and blueness can be to be detected respectively, and skill need be taken measures.If only need correction technique is used in black border and white edge, all three look data sets all can be to be detected so, and carry out logical operation (and the result ANDed together) together.

Further simplification can be carried out as follows.If delegation has only two pixels to accept rim detection, so above-mentioned detection can further be simplified, and still can reach high threshold and low threshold value.If (01) or (10) be detected, just can use a new value once otherwise use original value.

Also have another kind of short-cut method can use (being example with the redness): from being right after the red value value R on the left side _N-1If in deduct red data value Rn Δ greater than a predetermined number---for example 240 1 the edge is to be detected so.If a limit is to be detected, just can change a new value, or use gamma, will be worth Rn and output to display, or use new spr filter coefficients; Otherwise if there is not the limit to be detected, the result of box filter outputs on the display.Because Rn or R _N-1One of them is big slightly, and the absolute value of Δ can be to be detected.Same simplification can be applied on the blueness; Like fruit green is the division pixel in marshalling, and that just need not detect or adjust.As selection, can (be Rn-R to falling the limit _N-1＜0) and to rise the limit (be Rn-R _N-1＞0) adopts diverse ways.

The result obtains each logical pixel of having only the H subpixels 600.For obtaining a white point, red and blue data are adopted box filter, the illumination of green sub-pixels 106 is set to 100% as previously mentioned.The redness 104 on next door all is set to 50% with blue 102 illumination.The re-sampling operations of the inter-color-plane-phase relationship 610 shown in Fig. 6 D is very simple, with low cost, but its picture quality well.

Above-mentioned two data format conversion methods are placed on a fairly large number of green sub-pixels through the center with logical pixel and are complementary with human eye.The width of green sub-pixels has only the half the of red sub-pixel, and its brightness is but identical with the brightness of red sub-pixel.In fact, the good brightness of each green sub-pixels 106 looks like to have only the half the of relevant logical pixel in each zone, remaining brightness with near the red sub-pixel that is illuminated relevant.Therefore, green sub-pixels provides most high resolving power intensification modulation, and redness provides lower resolution color modulation with blue, is complementary with human eye.

Fig. 7 A is depicted as an alternative inter-color-plane-phase relationship 700 using the green 406 shown in Fig. 4 A, 4B and the 4C, blueness 402 and red 404 resample area array.Notice that the relative phase in this inter-color-plane-phase relationship 700 is identical with the relative phase of the color sub-pixel arrangement 100 shown in Fig. 7 B, the relative phase of the resample points of this inter-color-plane-phase relationship 700 is identical with the relative phase of inter-color-plane-phase relationship 610.If this inter-color-plane-phase relationship 700 is used as the Data Format Transform of " one to one ", green will be a single filtering again, and redness and blueness will adopt 3X2 coefficient filtering core:

0.0625	0.0625
		0.375	0.375
0.0625	0.0625

Notice that each total of this two hurdle all is 0.5, similar with the redness of inter-color-plane-phase relationship 610 with the coefficient of blue resampling filtering operation.

This inter-color-plane-phase relationship 700 shown in Fig. 7 A can be used for the scaling up and down of traditional formatted data group.The area resample method and the method for following the tracks of the input and output data buffer of calculating filter coefficient are disclosed in ' 355 applications of institute's reference.But; According to another embodiment; As long as red and blue color plane can area resample; In the time of on transforming data set with the arrangement mode that is presented at the color sub-pixel 100 shown in Fig. 1 C, adopt the way of realization of a kind of novelty of a Bicubic interpolation arithmetic rule (bi-cubic interpolation algorithm) of amplifying these data sets to come the square lattice calculating filter coefficient item for green sub-pixels 106, this method is more convenient.

Figure 10 has described a system 1000, and in this system, the display of processing according to disclosed various embodiment in this explanation is driven by a kind of sub-pixel rendering technology 1004, and this technology can be kept on the physical unit 1002.One input image data stream 1008 can be input to sub-pixel rendering technology 1004 and transform with mode disclosed herein.One output image data stream 1010 is sent to display equipment 1006 to drive each sub pixel and then to form image.Several places of drawing as this place with reference in point out that sub-pixel rendering (SPR) technology 1004 can be by hardware and/or software, or the combination of the two is realized.For example, sub-pixel rendering technology 1004 can be used as logic (hardware or software) and is kept on the display, or is kept on chart control chip or the plug-in card.

Figure 11 A and Figure 11 B have described two of sub-pixel rendering kinds of specific flow diagrams in software and hardware respectively.Among Figure 11 A, sub-pixel rendering can be realized on people's computer one by one or on other disposal systems and/or the method in advance.In this case, the image of precolor can be downloaded on controller or the interface, and is sent on the driver of this display of operation.Among Figure 11 B, view data can from numerous different sources input one for example have the notebook computer of digital video interface output or the computed table that has the digital video interface to export---be input to a hardware module of carrying out sub-pixel rendering.There, sub-pixel rendered data finally can send on this display through a controller or interface and a driver.Certainly, other hardware and software implementations also are possible, and Figure 11 A and Figure 11 B have only described two kinds in the possible implementation.

Shown in Figure 12 is a specific display implementation of a 320X320 STN display of disclosed here employing sub-pixel copied cells.Although Figure 12 also discloses the size of each sub pixel, what deserves to be mentioned is that other sizes can meet the demands too, Figure 12 has only provided a kind of explaination of implementation.

Because of elaboration of the present invention with reference to exemplary embodiment, skilled insider is understood that and can does various variations within the scope of the present invention to this that available congener replaces element wherein.In addition, also can not depart from the scope of the invention, do a large amount of adjustment so that a certain particular case or material adapt to purport.For example; Some above-mentioned embodiment can be implemented on other display technologies, like Organic Light Emitting Diode (OLED), electroluminescent display (EL), electrophoretic display device (EPD), AMLCD (AMLCD), passive matrix liquid crystal display (PMLCD), incandescent display, solid luminescent diode (LED), plasma panel display (PDP) and flash of light display.Therefore, the conduct that the present invention should not be limited to be disclosed is directed against a certain specific embodiment of optimal mode of the present invention, and comprises all embodiment in the accessory claim book scope.

Claims

1. a display is made up of a large amount of sub-pixel groups, and said sub-pixel group is made up of 8 subpixels;

Wherein 2 said second color sub-pixel and 2 said the 3rd color sub-pixel form the checkerboard style substantially, and,

Wherein, when all sub-pixels in this sub-pixel group are fully illuminated, generate white point.

2. display according to claim 1, wherein said first colour comprises green, each colour in said second colour and said the 3rd colour comprises a kind of colour in red and the blueness respectively.

3. display according to claim 1, wherein said first colour comprises redness, each colour in said second colour and said the 3rd colour is respectively a kind of colour in green and the blueness.

4. display according to claim 1, the zone that wherein said first color sub-pixel comprises are more colored and that the 3rd color sub-pixel comprises is regional little than said second.

5. display according to claim 1, wherein said sub-pixel group further comprise two row and four row sub-pixels; And

Wherein first of two non-adjacent column group comprises four said first color sub-pixel, and second group of two non-adjacent column comprises two said second color sub-pixel and two said the 3rd color sub-pixel.

6. display according to claim 5, said two the non-adjacent column that wherein comprise four described first color sub-pixel are shown perpendicular displacement for said two the non-vicinities that contain two said second color sub-pixel and two said the 3rd color sub-pixel.

7. display according to claim 1, the wherein said first colored said sub-pixel are dispersed in the said checkerboard style of sub-pixel of said second colored and said the 3rd colour.

8. display according to claim 1, wherein said display are AMLCDs.

9. display according to claim 8, wherein said display adopt the some inversion schemes to drive the sub-pixel of each sub-pixel group.

10. display according to claim 9, wherein said some inversion schemes is 1 * 1 inversion.

11. display according to claim 9, wherein said some inversion schemes is 2 * 1 inversions.