CN104376817A - Method for driving LCD panel and driving IC of LCD panel - Google Patents
Method for driving LCD panel and driving IC of LCD panel Download PDFInfo
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- CN104376817A CN104376817A CN201310350309.9A CN201310350309A CN104376817A CN 104376817 A CN104376817 A CN 104376817A CN 201310350309 A CN201310350309 A CN 201310350309A CN 104376817 A CN104376817 A CN 104376817A
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Abstract
The invention provides a method for driving an LCD panel based on a 2n primary color sub-pixel structure and a driving IC of the LCD panel. A sub-pixel array of the LCD panel is an M*N array, and the LCD panel is based on the 2n primary color sub-pixel structure. According to the method, the driving IC of the LCD panel based on a 3 primary color sub-pixel structure is adopted, in the row direction, multiple lines of sub-pixels are divided into multiple units, signal source channels, corresponding to the line number of the sub-pixels in each unit, of the driving IC are connected to each line of sub-pixels in the corresponding unit in sequence, and a connection line of a next signal source channel is emptied so that the polarities of the sub-pixels of the same color in each line can be complementary with one another.
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, as formed a pixel with 2 sub-pixels, and by image processing algorithm is combined with panel structure, to guarantee that LCD is when non-traditional RGB constructs, and 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 W sub-pixel and B 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, multiple row sub-pixel is divided into multiple unit, the signal source channel sequence described drive IC being corresponded to the columns of sub-pixel in each unit is connected to the often row sub-pixel in corresponding units and is hung by the line of next signal source channels empty, 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, makes the polarity of often row sub-pixel identical, often in row, the polarity of the sub-pixel of same color is complementary.
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+N/ (2n*k), wherein k be more than or equal to 1 integer.Further, the invention enables in the row direction, the polarity of the sub-pixel of each color is complementary, thus the skew of common electric voltage can not occur, and to avoid the display deviation of color, and avoids the flicker between frame and frame.Meanwhile, because the polarity of adjacent column is contrary, this also effectively prevent cross-talk (cross-talk).
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 the polarity selection connection diagram according to a kind of driving method of the present invention;
Figure 10 illustrates the polarity selection connection diagram according to another kind of driving method of the present invention;
Figure 11 illustrates the polarity selection connection diagram according to another driving method of the present invention;
Figure 12 illustrates the polarity selection connection diagram according to also a kind of driving method of the present invention;
Figure 13 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 W sub-pixel and B 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 integral multiple that the signal source port number of this drive IC (source channel) is N+N/(2n), the integral multiple of this 2n represents with 2n*k at this, wherein k be more than or equal to 1 integer, as 1,2....
The polarity selecting circuit of the drive IC of the existing LCD based on 3 primary color sub-pixels structures can be existing arbitrary polarity selecting circuit except the polarity selecting circuit based on row upset, such as based on the polarity selecting circuit of row upset, based on a polarity selecting circuit of upset or the polarity selecting circuit based on frame upset.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.
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, multiple row sub-pixel is divided into multiple unit, the signal source channel sequence described drive IC being corresponded to the columns of sub-pixel in each unit is connected to the often row sub-pixel in corresponding units and is hung by the line of next signal source channels empty, complementary with the polarity of the sub-pixel of same color in making often to go.Wherein, the columns of the sub-pixel in each unit is corresponding with 2n, can be 2n*k.
Such as, the array of sub-pixels of the LCD applied as the present invention is 960*1080, as being that the signal source passage of a unit to drive IC hangs empty line with 4 row sub-pixels, signal source port number required for this LCD is N+N/ (2n*k)=1080+1080/ (4*1)=1350, 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 1350, the such as drive IC of FHD screen 1920*1080, the drive IC of HD screen 1280*720 or the drive IC of 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 array of sub-pixels of the LCD applied as the present invention is 1280*1440, as being that the signal source passage of a unit to drive IC hangs empty line with 8 row sub-pixels, signal source port number required for this LCD is N+N/ (2n*k)=1440+1440/ (4*2)=10, 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 1620, the such as drive IC of FHD screen 1920*1080, the drive IC of HD screen 1280*720 or the drive IC of QHD screen 960*540, the signal source port number of these drive IC is respectively 3240, 2160, 1620.
And for example, the array of sub-pixels of the LCD applied as the present invention is 1920*2160, as being that the signal source passage of a unit to drive IC hangs empty line with 4 row sub-pixels, signal source port number required for this LCD is N+N/ (2n*k)=2160+2160/ (4*1)==2700, 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 2700, the such as drive IC of FHD screen 1920*1080, the signal source port number of this drive IC is 1080*3=3240.
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.
Fig. 9 illustrates the polarity selection connection diagram according to a kind of driving method of the present invention.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 3 primary colours HD screen 1280*720, and its signal source port number is 2160.
In the row direction, be a unit with 4 row sub-pixels, 1-4 signal source channel sequence of this drive IC be connected to the often row sub-pixel in Unit the 1st and the line of next signal source channels (i.e. the 5th signal source passage) hung empty; Repeat aforementioned Connection Step to the sub-pixel column of next unit, 6-9 the signal source channel sequence by this drive IC is connected to the often row sub-pixel (i.e. 5-8 row sub-pixel) in Unit the 2nd and is hung by the line of the 10th signal source passage empty; By that analogy, repeat aforementioned Connection Step, 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.Further, with 4 row sub-pixels be a unit empty line is hung to signal source passage time, in adjacent two unit, the polarity of the sub-pixel of same color is contrary.
At this, the signal source port number needed for this driving method is 1440+1440/4=1800, but the signal source port number of the drive IC this time adopted is 2160, for remaining 360(2160-1800) 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 1800 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 3 primary colours FHD screen 1920*1080 equally.When adopting the drive IC of existing 3 primary colours FHD screens, arbitrary section of continuous print 1800 signal source passages of this drive IC 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 being hung empty.
Figure 10 illustrates the polarity selection connection diagram according to another kind of driving method of the present invention.Wherein, the liquid crystal panel of 4 sub-pixels structures defers to RGWB
WBRG
Color arrangement mode, and at this, 8 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 3 primary colours HD screen 1280*720, and its signal source port number is 2160.
In the row direction, be a unit with 8 row sub-pixels, 1-8 signal source channel sequence of this drive IC be connected to the often row sub-pixel in Unit the 1st and the line of next signal source channels (i.e. the 9th signal source passage) hung empty; Repeat aforementioned Connection Step to the sub-pixel column of next unit, 10-17 the signal source channel sequence by this drive IC is connected to the often row sub-pixel (i.e. 9-16 row sub-pixel) in Unit the 2nd and is hung by the line of the 18th signal source passage empty; By that analogy, repeat aforementioned Connection Step, 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+1440/8=1620, but the signal source port number of the drive IC this time adopted is 2160, for remaining 540(2160-1620) 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 1620 signal source passages of adopted drive IC.
In addition, for the LCD shown in Figure 10, its drive IC can adopt the drive IC of the drive IC of the FHD screen 1920*1080 of existing 3 primary colours, the drive IC of HD screen 1280*720 or QHD screen 960*540 equally.When adopting the drive IC of the drive IC of existing FHD screen 1920*1080 or HD screen 1280*720, arbitrary section of continuous print 1620 signal source passages of respective 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 QHD screen, because its signal source port number is just 1620, 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.
Figure 11 illustrates the polarity selection connection diagram according to another driving method of the present invention.Wherein, the liquid crystal panel of 4 sub-pixels structures defers to RGWB
WBRG
Color arrangement mode, and at this, 8 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 3 primary colours HD screen 1280*720, and its signal source port number is 2160.
In the row direction, after the sub-pixel of front 2 row is connected with the 1st and the 2nd signal source channel sequence of this drive IC, the line of next signal source channels (i.e. the 3rd signal source passage) is hung empty; Subsequently, be a unit with 4 row sub-pixels, 4-7 signal source channel sequence of this drive IC be connected to the often row sub-pixel in Unit the 1st and the line of next signal source channels (i.e. the 8th signal source passage) hung empty; Repeat aforementioned Connection Step to the sub-pixel column of next unit, 9-12 the signal source channel sequence by this drive IC is connected to the often row sub-pixel (i.e. 7-10 row sub-pixel) in Unit the 2nd and is hung by the line of the 13rd signal source passage empty; By that analogy, repeat aforementioned Connection Step, until each sub-pixel column of last unit is connected to the corresponding signal source channels of this drive IC and is hung after sky by the line of the next signal source channels of this drive IC, the sub-pixels of 2 row last on line direction are connected with this drive IC 2 signal source channel sequence subsequently, with the polarity complementation of the sub-pixel of same color in making often to go.Further, often the polarity of row sub-pixel is symmetrical, and this makes the design of lcd screen more easy.
At this, the signal source port number needed for this driving method is 1440+1440/4=1800, but the signal source port number of the drive IC this time adopted is 2160, for remaining 360(2160-1800) 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 1800 signal source passages of adopted drive IC.
In addition, for the LCD shown in Figure 11, its drive IC can adopt the drive IC of existing 3 primary colours FHD screen 1920*1080 equally.When adopting the drive IC of existing FHD screen, arbitrary section of continuous print 1800 signal source passages of this drive IC 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 being hung empty.
Figure 12 illustrates the polarity selection connection diagram according to also a kind of driving method of the present invention.Wherein, the liquid crystal panel of 4 sub-pixels structures defers to RGWB
WBRG
Color arrangement mode, and at this, 8 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 3 primary colours HD screen 1280*720, and its signal source port number is 2160.
In the row direction, after the sub-pixel of front 4 row is connected with 1-4 signal source channel sequence of this drive IC, the line of next signal source channels (i.e. the 5th signal source passage) is hung empty; Subsequently, be a unit with 8 row sub-pixels, 6-13 signal source channel sequence of this drive IC be connected to the often row sub-pixel (i.e. 5-12 row) in Unit the 1st and the line of next signal source channels (i.e. the 14th signal source passage) hung empty; Repeat aforementioned Connection Step to the sub-pixel column of next unit, 15-22 the signal source channel sequence by this drive IC is connected to the often row sub-pixel (i.e. 13-20 row sub-pixel) in Unit the 2nd and is hung by the line of the 23rd signal source passage empty; By that analogy, repeat aforementioned Connection Step, until each sub-pixel column of last unit is connected to the corresponding signal source channels of this drive IC and is hung after sky by the line of the next signal source channels of this drive IC, the sub-pixels of 4 row last on line direction are connected with 4 signal source channel sequence subsequently of this drive IC, with the polarity complementation of the sub-pixel of same color in making often to go.Wherein, when the columns of each unit sub-pixel is more, the extension ceases to be busy of the signal source passage of the drive IC needed for this lcd screen is fewer, thus the kind of available existing drive IC is more.
At this, the signal source port number needed for this driving method is 1440+1440/8=1620, but the signal source port number of the drive IC this time adopted is 2160, for remaining 540(2160-1620) 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 1620 signal source passages of adopted drive IC.
In addition, for the LCD shown in Figure 12, its drive IC can adopt the drive IC of the drive IC of the FHD screen 1920*1080 of existing 3 primary colours, the drive IC of HD screen 1280*720 or QHD screen 960*540 equally.When adopting the drive IC of the drive IC of existing FHD screen 1920*1080 or HD screen 1280*720, arbitrary section of continuous print 1620 signal source passages of respective 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 QHD screen, because its signal source port number is just 1620, 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.
Because existing LCD drive IC can't will hang empty data output interface ineffective treatment automatically, in essence, these interfaces still what work, namely still have output signal, and just these output signals can not be revealed.Therefore, when LCD is used to display image, signal source passage output image data, and row insertion redundant data corresponding to empty output interface need be hung at these, the view data place namely corresponding to the extension empty position of the signal source passage of this drive IC inserts redundant data.Accordingly, the output order of view data is identical with the order that drive IC is connected to the signal source passage of the sub-pixel of this LCD, normal image signal can be output to normal pixel row, redundant data can be output to hangs empty data output interface, and first and last image remains normal display.
According to driving method of the present invention, need the operation of carrying out inserting redundant data to view data, 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, in position inserts redundant data and 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 13 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.The array of sub-pixels of this LCD is 1280*1440.
The signal source port number of this drive IC is N=1440; As shown in figure 13, 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.
Similarly, as being a unit with 8 row sub-pixels, in the row direction, each signal source channel sequence of this drive IC is connected to the sub-pixel of respective column, and all sub-pixel polarity of same column is identical, and in often going, the polarity of the sub-pixel of same color is complementary.
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 (14)
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, multiple row sub-pixel is divided into multiple unit, the signal source channel sequence described drive IC being corresponded to the columns of sub-pixel in each unit is connected to the often row sub-pixel in corresponding units and is hung by the line of next signal source channels empty, complementary with the polarity of the sub-pixel of same color in making often to go.
2. driving method according to claim 1, wherein, the signal source port number of described drive IC is at least N+N/(2n*k), wherein, k be more than or equal to 1 integer;
Wherein, this driving method comprises further:
In the row direction, the sub-pixel arranged with described 2n*k is a unit to a, the signal source channel sequence of the respective numbers of described drive IC is connected to the often row sub-pixel in first module and is hung by the line of next signal source channels empty;
B repeats described step a to next unit, until the often row sub-pixel in all unit is all connected to the corresponding signal source channels of described drive IC, complementary with the polarity of the sub-pixel of same color in making often to go.
3. driving method according to claim 1 and 2, wherein, described step a comprises further:
-in the row direction, after the sub-pixel that forward n*k arranges is connected with the signal source channel sequence of the respective numbers of described drive IC, the line of next signal source channels is hung empty;
-the sub-pixel that arranges with described 2n*k is a unit, the signal source channel sequence of the respective numbers of described drive IC is connected to the often row sub-pixel in first module and is hung by the line of next signal source channels empty;
Wherein, described step b comprises further:
-above-mentioned steps a is repeated to next unit, until the often row sub-pixel in last unit is connected to the signal source passage of described drive IC and the line of the next signal source channels of described drive IC is hung after sky, the sub-pixel that n*k last on line direction arranges is connected with the signal source channel sequence of described drive IC respective numbers subsequently, with the polarity complementation of the sub-pixel of same color in making often to go.
4. driving method according to any one of claim 1 to 3, wherein, this driving method also comprises:
-when described LCD is used to display image, the output order of view data is identical with the order that described drive IC is connected to the signal source passage of the sub-pixel of described LCD, and the view data place corresponding to the extension empty position of the signal source passage of described drive IC inserts redundant data.
5. driving method according to any one of claim 1 to 4, wherein, this driving method also comprises:
-be greater than N+N/(2n*k when the signal source port number of described drive IC) time, the line of remaining signal source passage is hung empty.
6. driving method according to any one of claim 1 to 5, 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.
7. driving method according to any one of claim 1 to 6, wherein, described LCD is based on 4 primary color sub-pixels structures.
8. driving method according to claim 7, 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.
9. driving method according to claim 8, wherein, the sub-pixel of other colors described is white sub-pixels.
10. 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, makes the polarity of often row sub-pixel identical, often in row, the polarity of the sub-pixel of same color is complementary.
11. drive IC according to claim 10, 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.
12. drive IC according to claim 10 or 11, wherein, wherein, described LCD is based on 4 primary color sub-pixels structures.
13. drive IC according to claim 12, 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.
14. drive IC according to claim 13, wherein, the sub-pixel of other colors described is white sub-pixels.
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