CN104658489A - Drive method and drive IC (integrated circuit) used for LCD (liquid crystal display) panel - Google Patents
Drive method and drive IC (integrated circuit) used for LCD (liquid crystal display) panel Download PDFInfo
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- CN104658489A CN104658489A CN201310590652.0A CN201310590652A CN104658489A CN 104658489 A CN104658489 A CN 104658489A CN 201310590652 A CN201310590652 A CN 201310590652A CN 104658489 A CN104658489 A CN 104658489A
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Abstract
The invention aims to provide a drive method and a drive IC (integrated circuit) used for an LCD (liquid crystal display) panel based on a 2n-primary-color sub-pixel structure. A sub-pixel array of the LCD panel is M*N and the LCD panel is based on the 2n-primary-color sub-pixel structure; the drive IC of the LCD panel based on a 3-primary-color sub-pixel structure is utilized in the drive method, and the number of signal source channels of the drive IC is at least N; in a row direction, integral multiple of 2n columns of sub-pixels are taken as a unit, two columns of sub-pixels are taken as a sub-unit for continuous same integral multiple of 2n columns of sub-pixels in every two continuous units, and the drive IC and two signal source channels corresponding to each sub-unit are crossly connected to two columns of sub-pixels in the corresponding sub-unit, so that the polarities of the sub-pixels same in color in each row are enabled to be complementary. Compared with the prior art, the drive method enables the polarities of the sub-pixels of each color in the row direction to be complementary, so that shift of public voltage cannot occur and color display deviation is avoided.
Description
Technical field
The present invention relates to LCD technical field, particularly relate to a kind of Driving technique for LCD.
Background technology
Traditional liquid crystal panel (LCD) adopts a pixel to have the specification of three sub-pixels divisions, and three sub-pixels show redness (R), green (G) and blue (B) three primary colors respectively.Trichromatic display is that the color blocking coating being coated with different colours on three sub-pixels respectively realizes, and in general color blocking coating can absorb 2/3 of white backlight, makes the overall transmitance of liquid crystal module not high.
For this situation, there are a kind of 4 sub-pixels specifications newly, except three primary colors, can also extra display white (W) or other colors.If sub-pixel is coated with transparent color blocking, then can display white, and backlight illumination not loss, improve module overall brightness and penetrance.Therefore in general, in order to obtain higher brightness, 4 sub-pixels can use the setting of RGBW.
Based on 4 sub-pixels specifications, the different color arranging rule of multiple and conventional sub-pixel division methods and corresponding driving method thereof are derived.In these class methods, pixel is no longer strictly divided into 4 (or 3 or other multiple) sub-pixels, but reduce division number to a certain extent, the substitute is and image processing algorithm is combined with panel structure, guarantee that panel is when non-traditional RGB constructs, still can accept traditional RGB picture signal, and the image that display is identical or close with original image.
The pixel-matrix of liquid crystal panel, when being applied in voltage, in order to protect liquid crystal molecule, can only being applied in alternating voltage, this generates the concept of pixel polarity.The modes such as polarity distribution generally overturns a little, row upset, row upset, frame upset, various mode respectively has application scenario that is good and bad and that be applicable to.But purport is all to obtain good display effect, lower power consumption, and drives process more easily.
For the LCD of 3 sub-pixels structures, because it arranges with RGB, and the polarity of drive IC export for+-+-+-..., this polarity making each monochrome sub-pixels on line direction is always complementary.
But for the LCD of 4 sub-pixels structures, the distribution of its polarity is then complicated many.
Such as, in the liquid crystal panel for a kind of RGBW tetra-sub-pixels structure, its color distribution defers to RGWB
WBRG
Periodic cycle.Wherein, R sub-pixel and G sub-pixel form a pixel, and B sub-pixel and W sub-pixel form a pixel.Due to the color arrangement mode of its uniqueness, the pixel polarity arrangement models such as common some upset, row upset easily cause the various display problem that there will not be on conventional RGB screen on this panel.
Fig. 1 illustrates the liquid crystal panel of the 4 sub-pixels structures as aforementioned color arrangement mode, and the polarity selecting circuit of its drive IC is based on a upset.At this, be concise explanation, 4 groups of RGWB are only shown
WBRG
Periodic cycle.
Coordinate and consult Fig. 2, Fig. 2 a illustrates that a kind of when some upset of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 1 may exist the bad image conditions of display.When full screen display is red, panel exists the situation of voltage couples between each circuit node.On screen, all R sub-pixels are all opened, and other all sub-pixels are all closed.
As shown in Figure 2 b, the parton pixel of the odd-numbered lines such as the 1st row and the 3rd row is positive polarity at present frame and all opens, but the corresponding sub-pixel of the negative polarity of simultaneously not opening.The variation in voltage entirety of such full line sub-pixel offsets towards positive polarity direction.There is coupling capacitance in each pixel electrode of the 1st row and the 3rd row, therefore causes the voltage V on public electrode respectively and between public electrode
comcommon potential is deviate from by being coupled towards the positive direction.Opening degree due to sub-pixel depends on the potential difference (PD) between pixel electrode and public electrode, after public electrode voltages departs from common potential, voltage between each sub-pixel and public electrode all there occurs deviation, cause the undertension of the sub-pixel of standard-sized sheet on the 1st row and the 3rd row, small voltage has then appearred in the sub-pixel of contract fully.Just there is deviation in the Show Color of such 1st row and the 3rd row.
The situation of the even number lines such as the 2nd row and the 4th row is also similar, just becomes common electric voltage V
comentirety departs from towards negative direction, finally also causes the Show Color of the 2nd row and the 4th row to occur deviation.
Integrate, under the pixel polarity distribution situation shown in Fig. 1 and Fig. 2 a, common electric voltage V
comoccur that strange row and even row are respectively towards the situation of coupling variation in the other direction, cause full frame color to occur deviation.Further, this situation all can occur during any one primary colors in full screen display RGB, and this is a kind of very common display situation, and the pixel polarity distribution therefore shown in Fig. 1 and Fig. 2 a can damage the service condition of the terminal of the liquid crystal panel adopting this arrangement.
Fig. 3 a illustrates that the another kind of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 1 when some upset may exist the bad image conditions of display.When full screen display cyan (cyan, for the 1:1 of primary colors G and B mixes), the situation of the voltage couples that panel exists between each circuit node.On screen, all G, B sub-pixels are opened, and every other sub-pixel is all closed.
As shown in Figure 3 b, the parton pixel of the odd-numbered lines such as the 1st row and the 3rd row is negative polarity at present frame and all opens, but the corresponding sub-pixel of the positive polarity of simultaneously not opening.The variation in voltage entirety of such entire row of pixels offsets towards negative polarity direction.There is coupling capacitance in each pixel electrode of the 1st row and the 3rd row, therefore causes the voltage V on public electrode respectively and between public electrode
comcommon potential is deviate from by being coupled towards negative sense.
The situation of the even number lines such as the 2nd row and the 4th row is also similar, just becomes common electric voltage V
comentirety departs from towards the positive direction, finally also causes the Show Color of the 2nd row and the 4th row to occur deviation.
Can find out, Fig. 3 a and b example shown and Fig. 2 a and b example shown are same types, but the degree of Fig. 3 a and b example shown is more serious, thus it can damage the service condition of the terminal of the liquid crystal panel adopting this arrangement equally.
Fig. 4 illustrates and defers to RGWB
WBRG
The liquid crystal panel of 4 sub-pixels structures of color arrangement mode, the polarity selecting circuit of its drive IC is based on row upset.Similarly, be concise explanation, Fig. 4 still only illustrates the periodic cycle of 4 groups of RGWB.
Fig. 5 illustrates that a kind of when arranging upset of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 4 may exist the bad image conditions of display.During for full screen display redness, the corresponding relation of color and polarity on panel.On screen, all R sub-pixels are opened, and every other sub-pixel is all closed.Now the polarity of all R pixels is just, and obviously, when other frame, the polarity of all R sub-pixels can be all again negative.Also, namely, in the moment of any one concrete frame, the polarity of all R sub-pixels is all consistent.
It should be noted that, although adopt R sub-pixel to be described at this, those skilled in the art will be understood that the sub-pixel for any one color, all there is the characteristic that polarity is consistent all the time, and compensate this polarity trend without any homochromy but reverse polarity.In this case, if V
comvoltage is not at suitable current potential, and the color relation of the color of the R sub-pixel of all positive polarity and the R sub-pixel of all negative polarity there will be deviation, and namely positive frame is different with the integral color of negative frame, thus causes flicker (flicker).
Summary of the invention
The object of this invention is to provide a kind of driving method for the LCD based on 2n primary color sub-pixels structure and drive IC thereof.
According to an aspect of the present invention, provide a kind of driving method for LCD, wherein, the array of sub-pixels of described LCD be M*N and described LCD based on the sub-pixel structure of 2n primary colours, n be more than or equal to 2 integer;
Wherein, this driving method utilizes the drive IC based on the LCD of 3 primary color sub-pixels structures;
Wherein, this driving method comprises:
-in the row direction, the sub-pixel arranged with the integral multiple of 2n is a unit, for the sub-pixel of the same integral multiple row of continuous print 2n in every two sequential cells, arranging with 2 is a subelement, 2 corresponding with each subelement for described drive IC signal source channels intersect are connected to 2 row sub-pixels in corresponding subelement, complementary with the polarity of the sub-pixel of same color in making often to go.
According to another aspect of the present invention, additionally provide a kind of drive IC for LCD, wherein, the array of sub-pixels of described LCD be M*N and described LCD based on the sub-pixel structure of 2n primary colours, n be more than or equal to 2 integer;
Wherein, this drive IC is configured to:
-signal source port number is N;
-in the row direction, N number of signal source channel sequence of this drive IC is connected to the sub-pixel of respective column, and is a unit with 2n row sub-pixel, make the polarity of the sub-pixel of same color in adjacent two unit contrary.
Compared with prior art, the invention enables the drive IC that can utilize existing arbitrary LCD based on 3 primary color sub-pixels structures, to drive based on 2n primary color sub-pixels structure and array of sub-pixels is the LCD of M*N, as long as the signal source port number of this drive IC is at least N.Further, driving method of the present invention makes in the row direction, and the polarity of the sub-pixel of each color is complementary, thus the skew of common electric voltage can not occur, to avoid the display deviation of color.
In addition, present invention also offers the LCD that a kind of special drive IC is applied to the sub-pixel structure based on 2n primary colours, the array of sub-pixels of LCD is M*N, the signal source port number of this drive IC is N, after each signal source channel sequence of this drive IC is connected to the sub-pixel of respective column, during the output polarity of each signal source makes often to go, the polarity of the sub-pixel of same color is complementary.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 illustrates of the prior art a kind of based on a partial schematic diagram for the liquid crystal panel of 4 sub-pixels structures of upset;
Fig. 2 a illustrates a kind of schematic diagram that may there is display bad image conditions of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 1 when some upset;
Fig. 2 b illustrates the common electric voltage V of often row sub-pixel under the image conditions that the display shown in Fig. 2 a is bad
comschematic diagram;
Fig. 3 a illustrates that the another kind of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 1 when some upset may exist the schematic diagram of the bad image conditions of display;
Fig. 3 b illustrates the common electric voltage V of often row sub-pixel under the image conditions that the display shown in Fig. 3 a is bad
comschematic diagram;
Fig. 4 illustrates the partial schematic diagram of another kind of the prior art based on the liquid crystal panel of 4 sub-pixels structures of row upset;
Fig. 5 illustrates a kind of schematic diagram that may there is display bad image conditions of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 4 when arranging upset;
Fig. 6 illustrates the schematic diagram of the polarity distribution mode of the liquid crystal panel according to 4 sub-pixels structures of the present invention;
Fig. 7 a illustrates the schematic diagram of the sub-pixel polarity distribution of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 6 when full screen display is red;
Fig. 7 b illustrates the common electric voltage V of often row sub-pixel in the display situation shown in Fig. 7 a
comschematic diagram;
Fig. 8 a illustrates the schematic diagram of the sub-pixel polarity distribution of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 6 when full screen display cyan;
Fig. 8 b illustrates the common electric voltage V of often row sub-pixel in the display situation shown in Fig. 8 a
comschematic diagram;
Fig. 9 illustrates according to one of driving method of the present invention exemplary polarity selection connection diagram;
Figure 10 illustrates another the exemplary polarity selection connection diagram according to driving method of the present invention;
Figure 11 illustrates the part connection diagram according to a kind of drive IC of the present invention and LCD.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention is intended to be applied to the LCD based on 2n primary color sub-pixels structure, at this, n be more than or equal to 2 integer, also be, the present invention can be applicable to the LCD based on even number primary colours, such as be applied to based on 4 primary colours, 6 primary colours ... the LCD of sub-pixel structure, its array of sub-pixels is M*N.Wherein each pixel is made up of the even number sub-pixel being less than or equal to 2n.Such as, for the LCD of 4 primary colours, wherein each pixel can be made up of 2 sub-pixels or 4 sub-pixels; For the LCD of 6 primary colours, wherein each pixel can be made up of 2 sub-pixels, 4 sub-pixels or 6 sub-pixels; By that analogy.
For ease of explanation; illustrate mainly with the LCD based on 4 primary color sub-pixels structures herein; but; those skilled in the art will be understood that; this citing is only for explaining the object that the present invention is described; and should not be regarded as any limitation of the invention, other are any is applicable to the LCD based on 2n primary color sub-pixels structure of the present invention, still belongs within scope of patent protection of the present invention.
Further, for the LCD based on 4 primary color sub-pixels structures, 4 primary colours wherein can be any 4 kinds of colors, and especially and without loss of generality, 4 primary colours are red, green, blue and other any one colors.Especially, these other any one colors are white.
Similarly, for ease of illustrating, illustrate the LCD based on 4 primary color sub-pixels structures of the present invention mainly with red, green, blue and white as 4 primary colours herein.But; those skilled in the art will be understood that; this citing is only for explaining the object that the present invention is described; and should not be regarded as any limitation of the invention; other any 4 kinds of colors; as it can be used to form the LCD based on 4 primary color sub-pixels structures, then still belong within scope of patent protection of the present invention.
Further, for ease of illustrating, herein with red, green, blue and white arrangement mode for RGWB
WBRG
Illustrate.Further, wherein R sub-pixel and G sub-pixel form a pixel, and B sub-pixel and W sub-pixel form a pixel.But; those skilled in the art will be understood that; this citing only for explaining the object that the present invention is described, and should not be regarded as any limitation of the invention, and other 4 look arrangement modes and/or applicable pixel composition structure/quantity still belong within scope of patent protection of the present invention.
In addition, because the driving method in the present invention can utilize the drive IC of any existing LCD based on 3 primary color sub-pixels structures to carry out, as long as the signal source port number of this drive IC (source channel) is no less than N, and the polarity selecting circuit of this drive IC can be existing except based on row upset polarity selecting circuit except arbitrary polarity selecting circuit, such as based on row upset polarity selecting circuit, based on some upset polarity selecting circuit or based on frame upset polarity selecting circuit.Wherein, also can comprise further based on the polarity selecting circuit of single-point upset and the polarity selecting circuit based on multiple spot upset based on a polarity selecting circuit of upset.
The LCD of existing 3 primary colours structures, the columns of its sub-pixel and the signal source port number of its drive IC are consistent and one to one.
Therefore, the signal source port number of the drive IC of existing various 3 primary colours LCD is as follows:
FHD screen 1920*1080(resolution) the signal source port number of drive IC be 1080*3=3240;
HD screen 1280*720(resolution) the signal source port number of drive IC be 720*3=2160;
QHD screen 960*540(resolution) the signal source port number of drive IC be 540*3=1620;
The signal source port number of the drive IC of WVGA screen is 480*3=1440.
Such as, the resolution level pel array of the LCD applied as the present invention is 960*1080, signal source port number required for this LCD is N=1080, then its drive IC can adopt arbitrary signal source port number to be more than or equal to the drive IC of the existing 3 primary colours LCD of 1080, the drive IC of the drive IC of such as FHD screen 1920*1080, the drive IC of HD screen 1280*720 or QHD screen 960*540, the signal source port number of these drive IC is respectively 3240,2160,1620.In addition, the array of sub-pixels that the present invention applies is the LCD of 960*1080, and its drive IC even can adopt the drive IC of WVGA screen, and its signal source port number is 480*3=1440.
For another example, the resolution level pel array of the LCD applied as the present invention is 1280*1440, signal source port number required for this LCD is N=1440, then its drive IC can adopt arbitrary signal source port number to be more than or equal to the drive IC of the existing 3 primary colours LCD of 1440, the drive IC of the drive IC of such as FHD screen 1920*1080, the drive IC of HD screen 1280*720 or QHD screen 960*540, the signal source port number of these drive IC is respectively 3240,2160,1620.In addition, the array of sub-pixels that the present invention applies is the LCD of 1280*1440, and its drive IC even can adopt the drive IC of WVGA screen, and its signal source port number is just 480*3=1440.
And for example, the array of sub-pixels of the LCD applied as the present invention is 1920*2160, signal source port number required for this LCD is N=2160, then its drive IC can adopt arbitrary signal source port number to be more than or equal to the drive IC of the existing 3 primary colours LCD of 2160, the drive IC of such as FHD screen 1920*1080 or the drive IC of HD screen 1280*720, the signal source port number of these two drive IC is respectively 3240 and 2160.
Wherein, the polarity distribution of sub-pixel dot matrix, depends on the output polarity of signal source.Further, the signal source of drive IC exports the control control of sub-pixel positive-negative polarity being needed to special polarity selecting circuit.In order to reduce the complexity of control circuit, it not is completely freely to define that polarity is selected, but pre-establishes better output polarity scheme, and terminal is therefrom chosen during actual use.Therefore, some polarity upset modes that drive IC is built-in, such as single-point upset, multiple spot upset, row upset, sawtooth pattern (zig-zag) upset etc., be and only can choose but not modifiable.
At this, for ease of illustrating, the polarity selecting circuit herein mainly with adopted drive IC is illustrated based on row upset.But; those skilled in the art will be understood that; this citing is only for explaining the object that the present invention is described; and should not be regarded as any limitation of the invention; other polarity upset method existing; as it is applicable to the present invention, such as put upset, frame upset etc., then still belong within scope of patent protection of the present invention.
Fig. 6 illustrates and defers to RGWB according to of the present invention
WBRG
The polarity distribution mode of the liquid crystal panel of 4 sub-pixels structures of color arrangement mode.Wherein, each polarity arranging all sub-pixels is all identical, the periodic arrangement that the polarity between adjacent column is distributed as "+-+-" alternately occurs with "-+-+".Accordingly, in the row direction, polarity is classified as a unit according to every 4, and unit inside is that normal columns is anti-, and between adjacent cells, the polarity of the sub-pixel of same color is contrary, and the correspondence position pixel polarity also namely between adjacent cells is contrary.
Fig. 7 a illustrates the sub-pixel polarity distribution of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 6 when full screen display is red.Wherein, R sub-pixel is all opened, other sub-pixel Close Alls.In every a line, the polarity of R sub-pixel is complementary all the time.Coordinate and consult Fig. 7 b, walk to the 4th row from the 1st, R sub-pixel is polarity complementation all the time, there will not be the identical deflection coupling caused of single file sub-pixel polarity.Similarly, for the situation of other colors of full screen display, in any a line, any one monochrome sub-pixels is polarity complementation all the time.
Fig. 8 a illustrates the sub-pixel polarity distribution of the liquid crystal panel of 4 sub-pixels structures shown in Fig. 6 when full screen display cyan.Wherein, G sub-pixel and B sub-pixel are all opened, other sub-pixel Close Alls.In every a line, the polarity of G sub-pixel is complementary all the time, and the polarity of B sub-pixel is complementary all the time.Coordinate and consult Fig. 8 b, walk to the 4th row from the 1st, G sub-pixel and B sub-pixel are polarity complementation all the time, there will not be the identical deflection coupling caused of single file sub-pixel polarity.
In the present invention, when adopt drive the LCD based on 2n primary color sub-pixels structure based on the drive IC of the LCD of 3 primary color sub-pixels structures time, in the row direction, the sub-pixel arranged with the integral multiple of 2n is a unit, sub-pixel as arranged with 2n*k is a unit, for the sub-pixel of the same integral multiple row of the 2n of arbitrary continuation in every two sequential cells, the sub-pixel that 2n*k as arbitrary continuation in every two sequential cells arranges, arranging with 2 is a subelement, the 2 row sub-pixels 2 corresponding with each subelement for described drive IC signal source Channel Exchange are linked in sequence in (i.e. cross connection) to corresponding subelement, also the 2nd row sub-pixel in wherein the 1st signal source expanding channels to corresponding subelement is about to, by the 1st row sub-pixel in wherein the 2nd signal source expanding channels to corresponding subelement, complementary with the polarity of the sub-pixel of same color in making often to go.
Fig. 9 illustrates according to one of driving method of the present invention exemplary polarity selection connection diagram.Wherein, the liquid crystal panel of 4 sub-pixels structures defers to RGWB
WBRG
Color arrangement mode, and at this, 4 groups of arrangements are only shown.Often the polarity of row sub-pixel is identical.The array of sub-pixels of this liquid crystal panel is 1280*1440, and this driving method adopts the drive IC of existing HD screen 1280*720, and its signal source port number is 2160.
In the row direction, be a unit with 4 row sub-pixels, for the sub-pixel of 4 row continuous in every two sequential cells, as 2-5 row sub-pixel, arranging with 2 is a subelement, 2 signal source passages (i.e. the 2nd and the 3rd signal source passage) that this drive IC is corresponding with the 1st subelement are changed sequence and cross-connect to 2 row sub-pixels in this subelement, by the 2nd signal source expanding channels to the 2nd row sub-pixel (the 3rd row sub-pixel namely in the first sub-pixel unit) in the 1st subelement, by the 3rd signal source expanding channels to the 1st row sub-pixel (the 2nd row sub-pixel namely in the first sub-pixel unit) in the 1st subelement, aforementioned cross-connection step is repeated to 2 row sub-pixels of next son unit, the the 4th and the 5th the signal source passage by this drive IC changes sequence and cross-connects to the 2nd and the 1st row sub-pixel (the 1st row sub-pixel namely in the second sub-pixel unit and the 4th row sub-pixel in first row sub-pixel unit) in the 2nd subelement, by that analogy, repeat aforementioned cross-connection step, until the sub-pixel of all subelements in a unit is all complete with the corresponding signal source channels cross connection of described drive IC, again aforementioned division subelement and cross-coupled step are repeated to next unit, until each sub-pixel column in all unit on line direction is all connected to the corresponding signal source channels of this drive IC, complementary with the polarity of the sub-pixel of same color in making often to go.
At this, the signal source port number needed for this driving method is 1440, but the signal source port number of the drive IC this time adopted is 2160, for remaining 720(2160-1440) individual signal source passage, its line is hung empty.Wherein, the signal source passage be connected with LCD can be arbitrary section of continuous print 1440 signal source passages of adopted drive IC.
In addition, for the LCD shown in Fig. 9, its drive IC can adopt the drive IC of existing FHD screen 1920*1080, the drive IC of QHD screen 960*540 or the drive IC of WVGA screen equally.When adopting the drive IC of existing 3 primary colours FHD screens or QHD screen, arbitrary section of continuous print 1440 signal source passages of this drive IC are being linked in sequence to all sub-pixel column of this LCD according to above-mentioned Connection Step, the line of residual signal source channels are being hung empty.When adopting the drive IC of existing WVGA screen, because its signal source port number is just 1440, after its all signal source channel sequence being connected to all sub-pixel column of this LCD according to above-mentioned Connection Step, then without residual signal source channels.
Consult Figure 10, be still wherein a unit with 4 row sub-pixels, to the continuous 4 row sub-pixels in every two sequential cells, as the sub-pixel of 1-4 row, with the signal source passage of corresponding order, i.e. 1-4 signal source passage of adopted drive IC, intersection line is carried out according to 2 row one subelements, as the 2nd the signal source expanding channels by the 1st row (i.e. the 1st row sub-pixel) in the 1st subelement and drive IC, by 1st the signal source expanding channels of the 2nd row (i.e. the 2nd row sub-pixel) in the 1st subelement with drive IC, by 4th the signal source expanding channels of the 1st row (i.e. the 3rd row sub-pixel) in the 2nd subelement with drive IC, by 3rd the signal source expanding channels of the 2nd row (i.e. the 4th row sub-pixel) in the 2nd subelement with drive IC, the polarity that sub-pixel polarity distribution obtained thus meets the sub-pixel of same color in the row direction is equally complementary.
In addition, for the lcd screen of 4 primary color sub-pixels, be a unit with 8 row sub-pixels, for the signal source passage of the continuous 8 row sub-pixels in every two sequential cells with corresponding order, arranging with 2 is a subelement, in each subelement, carry out sub-pixel column and the signal source passage corresponding to this subelement changing sequence intersect line, thus make the polarity of the sub-pixel of same color complementary all the time in the row direction.
According to driving method of the present invention, when drive IC adopts arbitrary method for turning, in the row direction, the polarity of the sub-pixel of same color is complementary all the time; When drive IC adopts row upset, in the row direction, the polarity of the sub-pixel of the inner same color of each unit is also complementary.
When LCD is used to display image, signal source passage output image data, and the order of the sub-pixel column connected according to each signal source passage is to export corresponding view data.Accordingly, the order of sub-pixel column corresponding when the output of view data order shows on the lcd panel with it is identical, and picture signal can be output to the pixel column of its correspondence position, and first and last image remains normal display.Such as, when the arrangement of subpixels of LCD is as RGWBRGWB
WBRGWBRG…，
The 3rd of drive IC and 4 signal source passages and the 3rd and 4 row sub-pixel cross connections, the 5th of drive IC and 6 signal source passages and the 5th and 6 row sub-pixel cross connections, also namely the 3rd signal source passage of drive IC is connected with the 4th row sub-pixel, 4th signal source passage of drive IC is connected with the 3rd row sub-pixel, 5th signal source passage of drive IC is connected with the 6th row sub-pixel, 6th signal source passage of drive IC is connected with the 5th row sub-pixel, thus for making view data export according to putting in order of sub-pixel column, namely the output order of view data is consistent with putting in order of sub-pixel column, for 3-6 signal source passage of drive IC, order according to signal source passage → 5, signal source passage → 6, a 4th signal source passage → 3rd signal source passage is carried out output image data by drive IC.
According to driving method of the present invention, need the order changing the view data that signal source passage exports, this does not need to increase extra cost for adopting the system of the non-usual RGB displays such as algorithm realization RGBW.For this kind of display system, the rgb signal of traditional images natively needs to be processed into through special conversion chip the signal being applicable to RGBW pixel system, in this transfer process, the order changing the view data that signal source passage exports is easy to realize.Can realize RGBW display thus when continuing to use traditional LC D driving chip, and it is bad to eliminate with pixel polarity of the present invention distribution the display that RGBW color distribution may bring.
Figure 11 illustrates the part connection diagram according to a kind of drive IC of the present invention and LCD, and this drive IC is applied to the LCD of the sub-pixel structure based on 4 primary colours.This LCD array of sub-pixels is 1280*1440.
The signal source port number of this drive IC is N=1440; As shown in figure 11, in the row direction, each signal source channel sequence of this drive IC is connected to the sub-pixel of respective column, all sub-pixel polarity of same column are identical, and be a unit with 4 row sub-pixels, make the polarity of the sub-pixel of same color in adjacent two unit contrary, and in often going, the polarity of the sub-pixel of same color is complementary.
Further, the polarity selecting circuit due to this drive IC adopts row upset, and therefore, this drive IC makes each unit inside be that normal columns is anti-, and the sub-pixel polarity of the correspondence position between adjacent cells is contrary.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in system claims or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.
Claims (12)
1. for a driving method for LCD, wherein, the array of sub-pixels of described LCD be M*N and described LCD based on the sub-pixel structure of 2n primary colours, n be more than or equal to 2 integer;
Wherein, this driving method utilizes the drive IC based on the LCD of 3 primary color sub-pixels structures;
Wherein, this driving method comprises:
-in the row direction, the sub-pixel arranged with the integral multiple of 2n is a unit, for the sub-pixel of the same integral multiple row of continuous print 2n in every two sequential cells, arranging with 2 is a subelement, 2 corresponding with each subelement for described drive IC signal source channels intersect are connected to 2 row sub-pixels in corresponding subelement, complementary with the polarity of the sub-pixel of same color in making often to go.
2. driving method according to claim 1, wherein, this driving method also comprises:
-when described LCD is used to display image, the output order of view data and the signal source passage of described drive IC to be connected to the order of the sub-pixel column of described LCD identical.
3. driving method according to claim 1 and 2, wherein, this driving method also comprises:
-when the signal source port number of described drive IC is greater than N, the line of remaining signal source passage is hung empty.
4. driving method according to any one of claim 1 to 3, wherein, the polarity selecting circuit of described drive IC comprises based on the polarity selecting circuit any one of row upset, some upset or serrate upset.
5. driving method according to any one of claim 1 to 4, wherein, described LCD is based on 4 primary color sub-pixels structures.
6. driving method according to claim 5, wherein, described 4 primary color sub-pixels comprise the sub-pixel of red sub-pixel, green sub-pixels, blue subpixels and other colors a kind of.
7. driving method according to claim 6, wherein, the sub-pixel of other colors described is white sub-pixels.
8. for a drive IC for LCD, wherein, the array of sub-pixels of described LCD be M*N and described LCD based on the sub-pixel structure of 2n primary colours, n be more than or equal to 2 integer;
Wherein, this drive IC is configured to:
-signal source port number is N;
-in the row direction, N number of signal source channel sequence of this drive IC is connected to the sub-pixel of respective column, and is a unit with 2n row sub-pixel, make the polarity of the sub-pixel of same color in adjacent two unit contrary.
9. drive IC according to claim 8, wherein, the polarity selecting circuit of this drive IC comprises based on the polarity selecting circuit any one of row upset, some upset or serrate upset.
10. drive IC according to claim 8 or claim 9, wherein, wherein, described LCD is based on 4 primary color sub-pixels structures.
11. drive IC according to claim 10, wherein, described 4 primary color sub-pixels comprise the sub-pixel of red sub-pixel, green sub-pixels, blue subpixels and other colors a kind of.
12. drive IC according to claim 11, wherein, the sub-pixel of other colors described is white sub-pixels.
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