CN101211029A - LCD device driving method - Google Patents
LCD device driving method Download PDFInfo
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- CN101211029A CN101211029A CNA2006100645825A CN200610064582A CN101211029A CN 101211029 A CN101211029 A CN 101211029A CN A2006100645825 A CNA2006100645825 A CN A2006100645825A CN 200610064582 A CN200610064582 A CN 200610064582A CN 101211029 A CN101211029 A CN 101211029A
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Abstract
The invention provides a driving method for a liquid crystal display device and includes the following steps: firstly, the liquid crystal display device comprising a plurality of pixels which are arrangement in matrix; secondly, the polarity of voltage loaded by only one pixel in four which are included in one 2*2 submatrix in the matrix of the pixels is changed in any two adjacent frames; and thirdly, the polarity of voltage loaded by any pixel in the matrix of the pixel is invariable in four continuous frames.
Description
Technical field
The invention relates to a kind of liquid crystal display apparatus driving circuit.
Background technology
In Thin Film Transistor-LCD, the demonstration of image is the voltage that loads on each pixel by change, controls its windup-degree with the electric field that changes the liquid crystal molecule both sides corresponding with this pixel region, and then controls that the throughput of light realizes.And liquid crystal molecule has such specific character: remain unchanged for a long time if load on the direction of an electric field of liquid crystal layer both sides, then the physical characteristics of liquid crystal molecule can be destroyed, and promptly can't do corresponding rotation according to the variation of electric field again.Therefore, just must change the direction of the electric field that is carried in the liquid crystal layer both sides at regular intervals, make alternately deflection in the opposite direction of liquid crystal molecule, to prevent that its physical characteristics from being destroyed.Common inversion driving mode has at present: frame inversion driving (FrameInversion), row inversion driving (Column Inversion), row inversion driving (Line/RowInversion) and some inversion driving (Dot Inversion) etc.Wherein, Fan Zhuan effect is better.
Seeing also Fig. 1, is a kind of synoptic diagram of prior art point inversion driving method.The polarity of each pixel institute on-load voltage is adjacent pixel and has nothing in common with each other, and the polarity of each pixel institute on-load voltage is all reversed once in each frame.Yet, when liquid crystal indicator shows as shown in Figure 2 the first sub-pixel blinker pattern (Sub-pixel Flicker Pattern), have only the pixel that indicates with circle in running order, as shown in Figure 3, the polarity of this a plurality of pixel institute on-load voltage all is positive polarity at the n-1 frame, at the n frame all is negative polarity, all is again positive polarity at the n+1 frame.When showing same GTG, because common electric voltage has subtle change in the reversal of poles process, in fact the voltage swing that loaded of this positive polarity pixel is not equal to the voltage swing that this negative polarity pixel is loaded, when the polarity of this a plurality of pixel institute on-load voltage all changed negative polarity into by positive polarity or all changes positive polarity into by negative polarity, human eye just can be seen tangible scintillation.
Be head it off, industry has proposed two row counter-rotating (2-Line Inversion) driving methods.See also Fig. 4, it is a kind of synoptic diagram of prior art two row inversion driving methods.The polarity of the pixel institute on-load voltage of each same column was consistent during the 1st row was capable with the 2nd, the polarity of the pixel institute on-load voltage of each same column was consistent during the 3rd row was capable with the 4th, and the 3rd row is opposite with the polarity of pixel institute on-load voltage of each same column in the 2nd row, and the rule of other each row pixel institute on-load voltage polarity is identical with the rule of the 1st to 4 row.The polarity of each pixel institute on-load voltage is reversed frame by frame.
When this two row inversion driving method solve to show first sub-pixel blinker pattern picture too glimmer problem principle as shown in Figure 5, when showing the first sub-pixel blinker pattern, in running order with a plurality of pixels that circle indicates.At any frame, it is positive polarity that half institute's on-load voltage is arranged in these a plurality of pixels, second half is a negative polarity, when showing same GTG, the brightness of the brightness of this positive polarity pixel and this negative polarity pixel is compensation mutually spatially, the variation of just imperceptible each the frame picture brightness of human eye, thus the problem that picture too glimmers when showing the first sub-pixel blinker pattern effectively solved.
Yet, when adopting this two row inversion driving method, at any frame, the 1st row and the 2nd row, the 3rd row and the 4th row ... in the polarity of pixel institute on-load voltage of each same column consistent all the time, in transmission signal process, transmit and the nonideal square-wave signal of data line again, but loss to some extent.When these a plurality of pixels showed same gray level, the brightness that each pixel shows was also different.
Be that example further specifies in conjunction with Fig. 6 now with pixel A among Fig. 4 and pixel B.When showing same gray level, at the n-1 frame, the ideal data voltage that pixel A and pixel B loaded is equal-sized negative voltage, but is in same row with pixel A and ideal data voltage that adjacent pixels loaded is positive voltage.Voltage signal can not become negative voltage immediately from positive voltage in data voltage signal actual transmissions process, the absolute value of pixel A institute loaded data voltage is less than the absolute value of ideal data voltage, and pixel B institute loaded data voltage is near ideal data voltage, the absolute value of pixel B institute loaded data voltage is greater than pixel A institute loaded data absolute value of voltage, i.e. the brightness of pixel A is lower than the brightness of pixel B.The situation of n frame and n+1 frame is similar to the situation of n-1 frame, and as shown in Figure 6, greater than the absolute value of pixel A institute loaded data voltage, i.e. the brightness of pixel A always is lower than the brightness of pixel B to the absolute value of pixel B institute loaded data voltage all the time.Be in the situation of each pixel of delegation and pixel A or pixel B roughly the same with pixel A or pixel B, promptly being in brightness with each pixel of delegation with pixel A always is lower than with pixel B and is in brightness with each pixel of delegation, thereby bright line and concealed wire appear in display frame on the whole, i.e. the parity line phenomenon.
And when this two row inversion driving method shows as shown in Figure 7 the second sub-pixel blinker pattern, have only the pixel that indicates with circle in running order, wherein, the pixel of duty is normal display image GTG, and other pixel shows black attitude.As shown in Figure 8, the polarity of this a plurality of pixel institute on-load voltage all is positive polarity at the n-1 frame, all is negative polarity at the n frame, all is again positive polarity at the n+1 frame.When showing same GTG, because common electric voltage has subtle change in the reversal of poles process, in fact the voltage swing that loaded of this positive polarity pixel is not equal to the voltage swing that this negative polarity pixel is loaded, when the polarity of this a plurality of pixel institute on-load voltage all changes negative polarity into by positive polarity or all changes positive polarity into by negative polarity, human eye can be seen tangible scintillation again, the problem that picture too glimmers when promptly showing the second sub-pixel blinker pattern under this two row inversion driving method.
Summary of the invention
The problem that picture too glimmers when solving above-mentioned parity line phenomenon and showing the first sub-pixel blinker pattern or during the second sub-pixel blinker pattern, be necessary to provide a kind of and can solve the parity line phenomenon, the liquid crystal display apparatus driving circuit of film flicker in the time of simultaneously reducing again to show the first sub-pixel blinker pattern or during the second sub-pixel blinker pattern.
A kind of liquid crystal display apparatus driving circuit, it may further comprise the steps: a liquid crystal indicator is provided, and it comprises a plurality of pixels that are arranged, and these whole pixels are formed a picture element matrix; In any adjacent two frames,, make the change in polarity of having only a pixel institute on-load voltage in its four included pixels for any one 2 * 2 submatrixs in this picture element matrix; The polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix every change once after, it is constant to keep continuous four frames.
Compared with prior art, liquid crystal display apparatus driving circuit of the present invention is because in any adjacent two frames, for any one submatrix in this picture element matrix, the change in polarity of having only a pixel institute on-load voltage in its four included pixels, and the polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix every change once after, it is constant to keep continuous four frames, make liquid crystal indicator can not satisfy the necessary and sufficient condition that the parity line phenomenon produces, do not satisfy simultaneously the necessary and sufficient condition of glimmering when showing the first sub-pixel blinker pattern and the second sub-pixel blinker pattern, thereby avoided the parity line phenomenon and shown the first sub-pixel blinker pattern and the generation of scintillation during the second sub-pixel blinker pattern.
Description of drawings
Fig. 1 is a kind of synoptic diagram of prior art point inversion driving method.
Fig. 2 is the synoptic diagram of the first sub-pixel blinker pattern.
Fig. 3 is the schematic diagram that picture too glimmers when adopting shown in Figure 1 some inversion driving method to show the first sub-pixel blinker pattern.
Fig. 4 is a kind of synoptic diagram of prior art two row inversion driving methods.
Fig. 5 adopts two row inversion driving methods shown in Figure 4 to solve the schematic diagram that picture too glimmers when showing the first sub-pixel blinker pattern.
Fig. 6 is the schematic diagram that occurs the parity line phenomenon when adopting shown in Figure 4 two to go inversion driving methods.
Fig. 7 is the synoptic diagram of the second sub-pixel blinker pattern.
Fig. 8 is the schematic diagram that picture too glimmers when showing the second sub-pixel blinker pattern when adopting the prior art two row inversion driving methods.
Fig. 9 is the synoptic diagram of the used display device of the present invention.
Figure 10 is the first embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.
Figure 11 is the schematic diagram that the present invention solves the parity line phenomenon.
Figure 12 is that the present invention solves the schematic diagram that picture too glimmers when showing the first sub-pixel blinker pattern.
Figure 13 is that the present invention solves the schematic diagram that picture too glimmers when showing the second sub-pixel blinker pattern.
Figure 14 is the second embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.
Figure 15 is the 3rd an embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.
Figure 16 is the 4th an embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.
Embodiment
See also Fig. 9, it is the synoptic diagram of the used liquid crystal indicator of the present invention.This liquid crystal indicator 2 comprises a liquid crystal panel 20, time schedule controller 21, scan driving circuit 22, a data drive circuit 23 and a public voltage generating circuit 24.This liquid crystal panel 20 comprises many sweep trace G1～GL that are parallel to each other (L＞1), and many data line D1～DM (M＞1) that are parallel to each other and intersect with this multi-strip scanning line G1～GL insulation respectively.This multi-strip scanning line G1～GL and this many data line D1～DM are divided into a plurality of pixels 205 with this liquid crystal panel 20, and each pixel 205 comprises a thin film transistor (TFT) 201 that is close to this sweep trace GL and this data line DM infall, a pixel electrode 202, one and the public electrode 203 that is oppositely arranged of this pixel electrode 202 and be sandwiched in liquid crystal molecule between this two electrode 202,203.The grid g of this thin film transistor (TFT) 201 is connected with this sweep trace, the source electrode s of this thin film transistor (TFT) 201 is connected with this data line, the drain electrode d of this thin film transistor (TFT) 201 is connected with this pixel electrode 202, and the public electrode 203 of these a plurality of pixels 205 is to be electrically connected on together, to have identical voltage.
During these liquid crystal indicator 2 work, this public voltage generating circuit 24 provides a common electric voltage (Vcom) to the public electrode 203 of these a plurality of pixels 205, this time schedule controller 21 sends a control signal and controls this scan drive circuit 22 and these data drive circuit 23 work, and transmits corresponding video signals to this data drive circuit 23.The scanning voltage of these scan drive circuit 22 outputs loads on the grid g of respective films transistor 201 by this multi-strip scanning line, respective films transistor 201 is opened, the data voltage of these data drive circuit 23 outputs loads on the source electrode s of corresponding thin film transistor (TFT) 201 by these many data lines, if this moment, this thin film transistor (TFT) 201 was in open mode, then this data voltage can be sent to the drain electrode d of this thin film transistor (TFT) 201 and load on this pixel electrode 202,203 of this pixel electrode 202 and this public electrodes can produce the rotation of an electric field with the control liquid crystal molecule, thereby make this liquid crystal panel 20 display images.
In order to protect liquid crystal molecule can not be damaged, the direction of this electric field needs cyclical variation.Describe for convenient, when the voltage that loads on pixel electrode 202 was higher than the voltage of its public electrode 203, defining the voltage that this pixel 205 loaded was positive polarity; When the voltage that loads on pixel electrode 202 was lower than the voltage of its public electrode 203, defining the voltage that this pixel 205 loaded was negative polarity.When positive polarity voltage and reverse voltage numerically equal, this pixel shows same gray level.
Liquid crystal display apparatus driving circuit of the present invention can have numerous embodiments, and only for convenience of description, existing regulation has a minimum repetitive.This minimum repetitive comprises four lines four row totally ten six pixels, and can to follow column weight by this minimum repetitive existing and obtain for the polarity of all pixel institute on-load voltages in each frame; Stipulate that again each 2 * 2 matrix all is called a sub-pixel matrix in this picture element matrix.
See also Figure 10, it is the first embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.At the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++ (+expression positive polarity ,-expression negative polarity); At the n+1 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-, ++--,+--+,--++; At the n+2 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++, ++--, ++--,--++; At the n+3 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,+--+, ++--,-++-; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,--++ ,-++-, ++--; At the n+6 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,--++,--++, ++--; At the n+7 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,-++-,--++ ,+--+; Afterwards, can repeat above-mentioned eight frames and form ensuing pattern.
By above-mentioned n frame as can be seen: arbitrarily in the two continuous frames to continuous eight frames of n+7 frame, for anyon picture element matrix in the minimum unit, four defined matrixes of pixel that adjacent arbitrarily two row, two row intersect in promptly should the minimum repetitive only have the change in polarity of a pixel institute on-load voltage in its four pixels; The polarity of any pixel institute on-load voltage is constant in continuous four frames in this minimum repetitive; Any frame, in the arbitrary row or arbitrary row of this minimum repetitive, the polarity of the adjacent two pixels institute on-load voltage of arbitrary pixel is opposite.
After above-mentioned minimum repetitive was generalized to whole picture element matrix, liquid crystal display apparatus driving circuit of the present invention can be summarized as:
In any adjacent two frames,, make the change in polarity of having only a pixel institute on-load voltage in its four included pixels for any one 2 * 2 submatrixs in this picture element matrix;
The polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix is after every change once, and it is constant to keep continuous four frames;
At any frame, in the arbitrary row or arbitrary row of this picture element matrix, make the polarity of adjacent two pixels institute on-load voltage of arbitrary pixel opposite.
The present invention can solve the parity line phenomenon preferably.Because one of necessary and sufficient condition that produces the parity line phenomenon is to have a sub-pixel matrix, its neither one pixel, two pixels is arranged or have four voltages that pixel loaded to change at next frame.If so in any adjacent two frames, for any one submatrix in this picture element matrix, have only the change in polarity of a pixel institute on-load voltage in its four included pixels, make liquid crystal indicator can not satisfy the necessary and sufficient condition that the parity line phenomenon produces.
Because only under these conditions, the polarity of partial pixel varying cyclically institute on-load voltage might only be arranged in this sub-pixel matrix, and another part pixel continues to keep its voltage constant, this will cause the constant liquid crystal molecule physical characteristics of this making alive destroyed.So increase condition simultaneously: the polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix is after every change once, and it is constant to keep continuous four frames, can make the polarity of each pixel institute on-load voltage in this sub-pixel matrix all can cyclical variation.
Because at any frame, in the arbitrary row or arbitrary row of this picture element matrix, the opposite polarity condition of the adjacent two pixels institute on-load voltage of arbitrary pixel makes the polarity of all pixel institute on-load voltages of this picture element matrix be repeated to obtain by this minimum repetitive.Be the example explanation now with pixel C, pixel D, pixel E and pixel F.As Figure 10 and shown in Figure 11, when showing same gray level, at the n frame, the ideal data voltage that pixel C and neighbor D are loaded is equal-sized negative voltage, but the ideal data voltage that another pixel loaded adjacent with pixel C is positive voltage in the same row.Voltage signal can not become negative voltage immediately from positive voltage in data voltage signal actual transmissions process, the absolute value of pixel C institute loaded data voltage is less than the absolute value of ideal data voltage, and pixel D institute loaded data voltage is near ideal data voltage, the absolute value of pixel D institute loaded data voltage is greater than the absolute value of pixel C institute loaded data voltage, i.e. the brightness of pixel C is lower than the brightness of pixel D.For pixel E and pixel F through similar analysis as can be known, the brightness of pixel E is lower than the brightness of pixel F.
At the n+1 frame, the ideal data voltage that pixel C loaded is positive voltage, and the ideal data voltage that pixel D loaded is negative voltage, and the ideal data voltage that another pixel loaded adjacent with pixel C in same row also is positive voltage.Pixel C institute loaded data voltage is near ideal data voltage, but voltage signal can not become negative voltage immediately from positive voltage in the data voltage signal actual transmissions process, so the absolute value of pixel D institute loaded data voltage is less than the absolute value of ideal data voltage, the absolute value of pixel D institute loaded data voltage is less than the absolute value of pixel C institute loaded data voltage, i.e. the brightness of pixel C is higher than the brightness of pixel D.And for pixel E and pixel F, the relative former frame of its brightness does not change, i.e. the brightness of pixel E is lower than the brightness of pixel F.
Can get through same analysis: at the n+2 frame, the brightness of pixel C is higher than the brightness of pixel D, and the brightness of pixel E is higher than the brightness of pixel F; At the n+3 frame, the brightness of pixel C is higher than the brightness of pixel D, and the brightness of pixel E is lower than the brightness of pixel F.In ensuing n+4 frame, n+5 frame, n+6 frame and the n+7 frame in the brightness of pixel C, D, E, F and n frame, n+1 frame, n+2 frame and the n+3 frame brightness situation of pixel C, D, E, F identical.
As seen, on the one hand,, there are not any delegation or any row to continue to be in bright line or concealed wire state at any continuous two frames.On the other hand, in any continuous four frames, pixel C has three frames to be in brighter attitude, has a frame to be in dark attitude, and has three frames to be in dark attitude with pixel E that pixel C is in the same row, has a frame to be in brighter attitude, has realized the complementation of brightness in row.And the situation for pixel D that is in same row and pixel F also is like this.
In sum, liquid crystal display apparatus driving circuit of the present invention preferably resolves the parity line phenomenon.
The present invention can solve the problem that picture too glimmers when showing the first sub-pixel blinker pattern and the second sub-pixel blinker pattern simultaneously.See also Figure 12, when showing the first sub-pixel blinker pattern, a plurality of pixels that indicate with circle among Figure 12 are in running order; Please consult Figure 13 together, when showing the second sub-pixel blinker pattern, a plurality of pixels that indicate with circle among Figure 13 are in running order.Wherein, the pixel of duty is normal display image GTG, and other pixel shows black attitude.Forming one of necessary and sufficient condition of flicker when showing this first sub-pixel blinker pattern and the second sub-pixel blinker pattern, is that any sub-pixel matrix has at least the polarity of two or more pixel institute on-load voltages to change at next frame in this picture element matrix.If, make liquid crystal indicator can not satisfy the necessary and sufficient condition of flicker so in any adjacent two frames,, have only the change in polarity of a pixel institute on-load voltage in its four included pixels for any submatrix in this picture element matrix.
Because only under these conditions, the polarity of partial pixel varying cyclically institute on-load voltage might only be arranged in this sub-pixel matrix, and another part pixel continues to keep its voltage constant, this will cause the constant liquid crystal molecule physical characteristics of this making alive destroyed.So increase condition simultaneously: the polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix is after every change once, and it is constant to keep continuous four frames, can make the polarity of each pixel institute on-load voltage in this sub-pixel matrix all can cyclical variation.
Because at any frame, in the arbitrary row or arbitrary row of this picture element matrix, the opposite polarity condition of the adjacent two pixels institute on-load voltage of arbitrary pixel makes the polarity of all pixel institute on-load voltages of this picture element matrix be repeated to obtain by this minimum repetitive.And when showing this first sub-pixel blinker pattern and the second sub-pixel blinker pattern, should be for any frame, the polarity that in running order pixel has half institute's on-load voltage in this minimum repetitive is for just, and half is arranged is negative.Because common electric voltage has subtle change in the reversal of poles process, in fact the voltage swing that loaded of this positive polarity pixel is not equal to the voltage swing that this negative polarity pixel is loaded.No matter causing on-load voltage polarity thus is that timing brightness is less, all can have half brighter half dark and compensation mutually to be arranged because of the pixel in this minimum repetitive.
In sum, thus can effectively solve the problem that picture too glimmers when showing the first sub-pixel blinker pattern and the second sub-pixel blinker pattern.
Compared with prior art, liquid crystal display apparatus driving circuit of the present invention is because in any adjacent two frames, for any submatrix in this picture element matrix, the change in polarity of having only a pixel institute on-load voltage in its four included pixels, and the polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix is after every change once, it is constant to keep continuous four frames, make liquid crystal indicator can not satisfy the necessary and sufficient condition that the parity line phenomenon produces, do not satisfy simultaneously the necessary and sufficient condition of glimmering when showing the first sub-pixel blinker pattern and the second sub-pixel blinker pattern, thereby avoided the parity line phenomenon and shown the first sub-pixel blinker pattern and the generation of scintillation during the second sub-pixel blinker pattern.
And because liquid crystal display apparatus driving circuit of the present invention is further satisfying at any frame, in the arbitrary row or arbitrary row of this picture element matrix, the opposite polarity condition of the adjacent two pixels institute on-load voltage of arbitrary pixel can compensate neighborhood pixels brightness mutually, and display effect is better.
The brightness of each pixel is changed frame by frame, and it is asynchronous with the brightness variation of this pixel that the brightness of arbitrary pixel neighbor changes, the brightness of the same pixel demonstration of consecutive frame picture is on the whole compensated mutually, very short because of each frame picture demonstration time again, thus human eye perceives does not go out the variation of the brightness of each pixel.And in any continuous four frames, any two adjacent pixel energies are enough realized the brightness complementation in the same row, thereby have determined the parity line phenomenon preferably.When showing the first sub-pixel blinker pattern or the second sub-pixel blinker pattern, it is positive polarity that half institute's on-load voltage is arranged in running order a plurality of pixels, second half is a negative polarity, so just can effectively solve the problem that picture too glimmers when showing the first sub-pixel blinker pattern or the second sub-pixel blinker pattern.In addition, in the every row of this picture element matrix or the every row, the polarity of on-load voltage be just or for negative number of pixels basic identical, and for whole viewing area, the pixel that loads positive polarity voltage is more even with the pixel distribution that loads reverse voltage, thereby can obtain image quality preferably.
See also Figure 14, it is the second embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.At the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++; At the n+1 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+, ++--,-++-,--++; At the n+2 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,+--+,-++-,-++-; At the n+3 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,--++ ,-++-, ++--; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,--++ ,+--+, ++--; At the n+6 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,--++ ,+--+,+--+; At the n+7 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-, ++--,+--+,--++; At the n+8 frame, the polarity of this minimum repetitive pixel institute on-load voltage is with identical when the n frame.
See also Figure 15, it is the 3rd an embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.At the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++; At the n+1 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,+--+,--++ ,-++-; At the n+2 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,--++,--++, ++--; At the n+3 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,--++ ,+--+, ++--; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,-++-, ++--,+--+; At the n+6 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++, ++-, ++--,--++; At the n+7 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+, ++--,-++-,--++; At the n+8 frame, the polarity of this minimum repetitive pixel institute on-load voltage is with identical when the n frame.
See also Figure 16, it is the 4th an embodiment synoptic diagram of liquid crystal display apparatus driving circuit of the present invention.At the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++; At the n+1 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,-++-,--++ ,+--+; At the n+2 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,-++-,+--+,+--+; At the n+3 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,-++-, ++--,+--+; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,+--+, ++--,-++-; At the n+6 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,+--+,-++-,-++-; At the n+7 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,+--+,--++ ,-++-; At the n+8 frame, the polarity of this minimum repetitive pixel institute on-load voltage is with identical when the n frame.
This second and third and the driving method that summed up of four embodiments and first embodiment summed up identical, difference only is that the variation pattern of this 2 * 2 matrix in any two continuous frames is different.
But, liquid crystal display apparatus driving circuit of the present invention is not limited to the described of above-mentioned embodiment, condition only: in adjacent two frames arbitrarily,, have only the change in polarity of a pixel institute on-load voltage in its four included pixels for any one 2 * 2 submatrixs in this picture element matrix; The polarity of any pixel institute on-load voltage is constant in continuous four frames in this picture element matrix; Be necessity.And further satisfy condition: at any frame, in the arbitrary row or arbitrary row of this picture element matrix, the polarity of the adjacent two pixels institute on-load voltage of each pixel is opposite; Deng obtaining better effect.
Claims (10)
1. liquid crystal display apparatus driving circuit, it may further comprise the steps:
One liquid crystal indicator is provided, and it comprises a plurality of pixels that are arranged, and these whole pixels are formed a picture element matrix;
In any adjacent two frames,, make the change in polarity of having only a pixel institute on-load voltage in its four included pixels for any one 2 * 2 submatrixs in this picture element matrix;
The polarity that makes any pixel institute on-load voltage in this 2 * 2 submatrix is after every change once, and it is constant to keep continuous four frames.
2. liquid crystal display apparatus driving circuit as claimed in claim 1 is characterized in that: at any frame, in the arbitrary row or arbitrary row of this picture element matrix, make the polarity of adjacent two pixels institute on-load voltage of each pixel opposite.
3. liquid crystal display apparatus driving circuit as claimed in claim 2, it is characterized in that: make this picture element matrix have a minimum repetitive, this minimum repetitive comprises four lines four row totally ten six pixels, and can to follow column weight by this minimum repetitive multiple and obtain for the polarity of all pixel institute on-load voltages in each frame.
4. liquid crystal display apparatus driving circuit as claimed in claim 2 is characterized in that: making the pattern that polarity constituted of all pixel institute on-load voltages in this liquid crystal indicator is one-period with continuous eight frames.
5. liquid crystal display apparatus driving circuit as claimed in claim 4, it is characterized in that: make it comprise following eight continuous frames: at the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++ (+expression positive polarity ,-expression negative polarity); At the n+1 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-, ++--,+--+,--++; At the n+2 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++, ++--, ++--,--++; At the n+3 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,+--+, ++--,-++-; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,--++ ,-++-, ++--; At the n+6 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,--++,--++, ++--; At the n+7 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,-++-,--++ ,+--+; Wherein, this symbol+expression positive polarity, this symbol-expression negative polarity.
6. liquid crystal display apparatus driving circuit as claimed in claim 4, it is characterized in that: make it comprise following eight continuous frames: at the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++; At the n+1 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+, ++--,-++-,--++; At the n+2 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,+--+,-++-,-++-; At the n+3 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,--++ ,-++-, ++--; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,--++ ,+--+, ++--; At the n+6 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,--++ ,+--+,+--+; At the n+7 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-, ++--,+--+,--++; Wherein, this symbol+expression positive polarity, this symbol-expression negative polarity.
7. liquid crystal display apparatus driving circuit as claimed in claim 4, it is characterized in that: make it comprise following eight continuous frames: at the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++; At the n+1 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,+--+,--++ ,-++-; At the n+2 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,--++,--++, ++--; At the n+3 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,--++ ,+--+, ++--; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,-++-, ++--,+--+; At the n+6 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++, ++--, ++--,--++; At the n+7 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+, ++--,-++-,--++; Wherein, this symbol+expression positive polarity, this symbol-expression negative polarity.
8. liquid crystal display apparatus driving circuit as claimed in claim 4, it is characterized in that: make it comprise following eight continuous frames: at the n frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--, ++--,--++,--++; At the n+1 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,-++-,--++ ,+--+; At the n+2 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively-++-,-++-,+--+,+--+; At the n+3 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,-++-, ++--,+--+; At the n+4 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++,--++, ++--, ++--; At the n+5 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively--++ ,+--+, ++--,-++-; At the n+6 frame, polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively+--+,+--+,-++-,-++-; At the n+7 frame, the polarity of first, second, third and fourth row pixel institute on-load voltage of this minimum repetitive is respectively ++--,+--+,--++ ,-++-; Wherein, this symbol+expression positive polarity, this symbol-expression negative polarity.
9. liquid crystal display apparatus driving circuit as claimed in claim 1 is characterized in that: making the polarity of institute's on-load voltage in any delegation or any all pixels of row is that positive quantity is identical for the quantity of bearing with polarity.
10. liquid crystal display apparatus driving circuit as claimed in claim 2 is characterized in that: the polarity that makes in this minimum repetitive institute's on-load voltage in delegation arbitrarily or any row pixel is that positive quantity is identical for the quantity of bearing with polarity.
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