CN100520511C - Liquid crystal display device and its driving method - Google Patents
Liquid crystal display device and its driving method Download PDFInfo
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- CN100520511C CN100520511C CNB2007101413228A CN200710141322A CN100520511C CN 100520511 C CN100520511 C CN 100520511C CN B2007101413228 A CNB2007101413228 A CN B2007101413228A CN 200710141322 A CN200710141322 A CN 200710141322A CN 100520511 C CN100520511 C CN 100520511C
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Abstract
The invention is a LCD and the drive method thereof. And the LCD comprises multiple pixels, multiple scan lines and multiple data lines, where each pixel has multiple subpixels and each subpixel is coupled to data line and equipped with switch component, storage capacitor and subpixel electrode, the switch component is coupled with scan line and turned-on by receiving scan signal and able to receive data signal transmitted by data line, the storage capacitor of each subpixel is coupled to scan line which is not in the same row with the subpixel, or the storage capacitor of one of the subpixels of each pixel is coupled to common electrode, the storage capacitors of the other subpixels are coupled to scan lines not in the same row with the subpixels. And the drive method comprises: transmitting scan signal with multiple levels and regulating the level of at least a subpixel electrode in the subpixels of the same pixel, and driving the subpixels of the same pixel to have different levels. And the invention can make liquid crystal in the region of the same pixel deflect at different angles so as to solve off-axis color shift phenomenon.
Description
Technical field
The present invention relates to a kind of display, particularly a kind of Liquid Crystal Display And Method For Driving.
Background technology
No matter because LCD all is better than traditional cathode-ray tube (CRT) (Cathode Ray Tube on characteristics such as resolution, weight, thickness, reaction velocity and power consumption, CRT) display is so LCD replaces traditional cathode-ray tube display gradually.Add that the technical progress of LCD is advanced by leaps and bounds in recent years, and along with the continuous expansion of electronic product purposes, so the application of LCD also more and more is extensive.
The picture of LCD includes a plurality of pixels (pixel), and each pixel comprises the liquid crystal of certain area and is used for display image.Owing to liquid crystal is subjected to the penetrance that electric field action meeting deflection changes light, so during the liquid crystal display displays image, can apply voltages to pixel to produce the liquid crystal of electric field in pixel region, and the inclination angle of the liquid crystal in the control pixel region, so be the penetrance of may command light, that is the brightness of controllable pixels.Yet, because the liquid crystal in each pixel region only is subjected to single control of Electric potentials and the single inclination angle of deflection, to make like this when different visual angles is watched picture, can be because watch sight line different with the angle of liquid crystal, and producing the phenomenon of color and luminance distortion, this phenomenon is so-called off-axis color bias (color washout).This kind phenomenon can cause can being different from the color that positive visual angle is watched at the color of the picture of being watched with great visual angle, so will cause the color picture that only can just can watch normal brightness in certain visual angle.If when the picture of LCD is watched in the position beyond certain visual angle, then can see the picture of color distortion because of the difference of brightness.
Therefore, the present invention promptly proposes a kind of Liquid Crystal Display And Method For Driving at the problems referred to above, allows when watching the picture of LCD, can not produce the phenomenon of color and luminance distortion because of the difference of watching the visual angle, and then the display performance of raising LCD, to address the above problem.
Summary of the invention
The object of the present invention is to provide a kind of Liquid Crystal Display And Method For Driving, make the liquid crystal in each pixel region that a plurality of deflection angles be arranged, when watching picture at arbitrary visual angle, watch sight line little with the angle summation meeting difference of the liquid crystal of different deflection angles, so can avoid taking place the phenomenon of off-axis color bias, promptly improve the display performance of LCD by the visual angle of improving LCD.
The invention provides a kind of LCD, it comprises: N bar sweep trace, and be row and arrange, N is a positive integer; Many data lines are row arrangement and staggered with described sweep trace; A plurality of pixels, correspond respectively to described sweep trace, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with on-off element, storage capacitors and pixel electrode, described pixel electrode respectively with described on-off element and described storage capacitors electric coupling, the on-off element of the sub-pixel of each pixel couples the sweep trace with delegation, and the storage capacitors of the sub-pixel of each pixel is respectively coupled to the sweep trace with described sub-pixel different rows, and described sub-pixel couples described data line; Data driver couples described data line and difference data signal to described sub-pixel; And scanner driver, couple described sweep trace and transmit the on-off element of sweep signal respectively, and drive described on-off element conducting, to receive this data-signal to the sub-pixel of each row.
Aforesaid LCD, wherein the sweep signal that transmits of this scanner driver has multistage level, and regulates the level of at least one pixel electrode in the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
Aforesaid LCD, wherein each pixel has first sub-pixel and second sub-pixel.
Aforesaid LCD, first sub-pixel of wherein corresponding N bar sweep trace and two storage capacitors of second sub-pixel are respectively coupled to N-1 bar sweep trace and N+1 bar sweep trace.
Aforesaid LCD, first sub-pixel of wherein corresponding N bar sweep trace and two storage capacitors of second sub-pixel are respectively coupled to N+1 bar sweep trace and N+2 bar sweep trace.
Aforesaid LCD, first sub-pixel of wherein corresponding N bar sweep trace and two storage capacitors of second sub-pixel are respectively coupled to N-1 bar sweep trace and N-2 bar sweep trace.
Aforesaid LCD, wherein this N-1 bar sweep trace is across to described pixel region that should N bar sweep trace, and this N-1 bar sweep trace is coupled to the storage capacitors to a sub-pixel in should each pixel of N bar sweep trace.
Aforesaid LCD, wherein this N-1 bar sweep trace is across the described pixel region of corresponding N-2 bar sweep trace, and this N-1 bar sweep trace is coupled to the storage capacitors to a sub-pixel in should each pixel of N-2 bar sweep trace.
Aforesaid LCD, wherein this N-1 bar sweep trace is across to the pixel region that should N bar sweep trace and the pixel region of corresponding N-2 bar sweep trace, this N-1 bar sweep trace be coupled to should N bar sweep trace and each pixel of this N-2 bar sweep trace in the storage capacitors of a sub-pixel.
Aforesaid LCD, wherein the level variable quantity of the storage capacitors of this first sub-pixel is greater than the level variable quantity of the storage capacitors of this second sub-pixel.
Aforesaid LCD, wherein the on-off element of the sub-pixel of each pixel all couples identical data line.
Aforesaid LCD, wherein this data driver and this scanner driver also couple time schedule controller, and this time schedule controller is controlled this data driver and this scanner driver.
Aforesaid LCD, wherein each sub-pixel has liquid crystal capacitance, this liquid crystal capacitance and this on-off element and this storage capacitors electric coupling.
The present invention also provides a kind of LCD, and it comprises: N bar sweep trace, and be row and arrange, N is a positive integer; Many data lines are row arrangement and staggered with described sweep trace; A plurality of pixels, correspond respectively to described sweep trace, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with on-off element, storage capacitors and pixel electrode, this pixel electrode respectively with this on-off element and this storage capacitors electric coupling, the on-off element of the sub-pixel of each pixel couples the sweep trace with delegation, one of them storage capacitors of the sub-pixel of each pixel is coupled to common electrode, the storage capacitors of all the other sub-pixels is coupled to and the sweep trace of this sub-pixel different rows, and described sub-pixel couples described data line; Data driver couples described data line and difference data signal to described sub-pixel; And scanner driver, couple described sweep trace and transmit the on-off element of sweep signal respectively, and drive described on-off element conducting, to receive this data-signal to the sub-pixel of each row.
Aforesaid LCD, wherein the sweep signal that transmits of this scanner driver has multistage level, and regulates the level of at least one pixel electrode of the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
Aforesaid LCD, wherein each pixel has first sub-pixel and second sub-pixel.
Aforesaid LCD, first sub-pixel of wherein corresponding N bar sweep trace and two storage capacitors of second sub-pixel are respectively coupled to this common electrode and N+1 bar sweep trace.
Aforesaid LCD, first sub-pixel of wherein corresponding N bar sweep trace and two storage capacitors of second sub-pixel are respectively coupled to N-1 bar sweep trace and this common electrode.
Aforesaid LCD, wherein the level of the storage capacitors of sub-pixel is regulated, and the level of this storage capacitors of another sub-pixel is not regulated.
Aforesaid LCD, wherein the on-off element of the sub-pixel of each pixel all couples identical data line.
The present invention also provides a kind of LCD, and it comprises: the multi-strip scanning line, and it is row and arranges; Many data lines, it is row arrangement and staggered with described sweep trace; A plurality of pixels, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with on-off element, storage capacitors and pixel electrode, this pixel electrode respectively with this on-off element and this storage capacitors electric coupling, the on-off element of each sub-pixel of each pixel respectively couples this sweep trace, the storage capacitors of the sub-pixel of each pixel is respectively coupled to the sweep trace with described sub-pixel different rows, and described sub-pixel couples described data line; Data driver couples described data line and difference data signal to described sub-pixel; And scanner driver, couple described sweep trace and transmit the on-off element of sweep signal respectively, and drive described on-off element conducting, to receive this data-signal to the sub-pixel of each row.
Aforesaid LCD, wherein the sweep signal that transmits of this scanner driver has multistage level, and regulates the level of at least one pixel electrode of the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
The present invention also provides a kind of driving method of LCD, this LCD has the multi-strip scanning line, many data lines and a plurality of pixel, described sweep trace and described data line are row and row arrangement and interlaced respectively, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with the on-off element of electric coupling, storage capacitors and pixel electrode, this on-off element couples sweep trace, one of them storage capacitors of the sub-pixel of each pixel is coupled to common electrode, the storage capacitors of all the other sub-pixels is coupled to the sweep trace with described sub-pixel different rows, described sub-pixel couples described data line, this method comprises: transmit the sweep trace of sweep signal to each row respectively, and be sent to the on-off element of described sub-pixel of each row, to drive described on-off element conducting; And the difference data signal is to described sub-pixel; Wherein, this sweep signal has multistage level, and regulates the level of at least one pixel electrode of the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
Aforesaid driving method, wherein the on-off element of the sub-pixel of each pixel couples the sweep trace with delegation.
Aforesaid driving method, wherein the on-off element of each sub-pixel of each pixel couples this sweep trace of different rows respectively.
Aforesaid driving method, wherein each this pixel has first sub-pixel and second sub-pixel.
Aforesaid driving method, wherein the level of the storage capacitors of sub-pixel is regulated, and the level of this storage capacitors of another this sub-pixel is not regulated.
LCD of the present invention includes multi-strip scanning line, many data lines, a plurality of pixel, data driver and scanner drivers, wherein sweep trace and data line are row arrangement and row arrangement respectively, and both are interlaced, are used to transmit sweep signal and data-signal.Each pixel of the present invention respectively has a plurality of sub-pixels, and each sub-pixel is provided with on-off element, storage capacitors and pixel electrode that electricity couples mutually; Wherein, on-off element couples sweep trace, and the storage capacitors of the sub-pixel of described pixel is respectively coupled to the sweep trace with described sub-pixel different rows, perhaps one of them storage capacitors of the sub-pixel of described pixel is coupled to common electrode, and the storage capacitors of all the other sub-pixels then is coupled to the sweep trace with the sub-pixel different rows; Data driver couples data line and distinguishes data signal to described sub-pixel; Scanner driver couples described sweep trace and transmits the on-off element of sweep signal to the sub-pixel of each row, and drives described on-off element conducting to receive data-signal.
The present invention has the pixel of the sweep signal of multistage level to each row by transmission, and regulate the level of at least one pixel electrode in the sub-pixel of same pixel, the sub-pixel that orders about same pixel has varying level, so can allow liquid crystal deflection different angles in the zone of same pixel, and can solve the phenomenon of off-axis color bias.
Description of drawings
Fig. 1 is the circuit diagram of the preferred embodiments of the present invention;
Fig. 2 is the oscillogram of the sweep signal described according to the present invention;
Fig. 3 is another oscillogram of the sweep signal described according to the present invention;
Fig. 4 is another oscillogram of the sweep signal described according to the present invention;
Fig. 5 is another oscillogram of the sweep signal described according to the present invention;
Fig. 6 is another oscillogram of the sweep signal described according to the present invention;
Fig. 7 is the circuit diagram of another preferred embodiment of the present invention;
Fig. 8 is the circuit diagram of another preferred embodiment of the present invention;
Fig. 9 is another oscillogram of the sweep signal described according to the present invention;
Figure 10 is another oscillogram of the sweep signal described according to the present invention;
Figure 11 is the layout of the preferred embodiments of the present invention; And
Figure 12 is the layout of another preferred embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1 LCD
10 scanner drivers
15 sweep traces
20 data drivers
25 data lines
30 time schedule controllers
40 pixels
41 first sub-pixels
42 on-off elements
43 storage capacitors
44 liquid crystal capacitances
45 second sub-pixels
46 on-off elements
47 storage capacitors
48 liquid crystal capacitances
The Vcom common electrode
Embodiment
Fig. 1 is the circuit diagram of the preferred embodiment of the present invention.As shown in the figure, LCD 1 includes scanner driver 10, multi-strip scanning line 15, data driver 20, many data lines 25, time schedule controller 30 and a plurality of pixels 40.Scanner driver 10 couples sweep trace 15, to transmit sweep signal, wherein sweep trace 15{G
n, n=12 ..., N is line mode and arranges, and N is a positive integer.Data driver 20 couples data line 25, with data signal, and data line 25{D wherein
m, m=1,2 ..., M is that the row mode is arranged and is interlaced with sweep trace 15, and M is a positive integer.Time schedule controller 30 couples scanner driver 10 and data driver 20, and it is used for gated sweep driver 10 and transmits sweep signal and data-signal with data driver 20.
Pixel 40 is matrix-style arranges, and each pixel 40 respectively is provided with a plurality of sub-pixels.In this embodiment, pixel 40 is provided with first sub-pixel 41 and second sub-pixel 45, and wherein first sub-pixel 41 and second sub-pixel 45 respectively are provided with on-off element 42,46, storage capacitors 43,47 and liquid crystal capacitance 44,48.On-off element 42,46 can be transistor, and its grid respectively couples sweep trace 15, and receives sweep signal and conducting.In addition, the source electrode of on-off element 42,46 all couples data line 25, and receives data-signal when conducting.One end of the drain electrode of on-off element 42 and storage capacitors 43 all couples the pixel electrode of first sub-pixel 41, wherein pixel electrode is an end of liquid crystal capacitance 44, the other end of storage capacitors 43 is coupled to the sweep trace 15 of lastrow, and the storage capacitors 43 that for example is positioned at first sub-pixel 41 of N horizontal scanning line 15 is coupled to N-1 horizontal scanning line 15.Be same as above-mentionedly, the drain electrode of the on-off element 46 of second sub-pixel 45 and an end of storage capacitors 47 all couple the pixel electrode of second sub-pixel 45, and promptly with liquid crystal capacitance 48 electric couplings, and the other end of storage capacitors 47 couples lastrow sweep trace 15.As shown in the figure, the storage capacitors 47 that is positioned at second sub-pixel 45 of N+1 horizontal scanning line 15 is coupled to N horizontal scanning line 15.
According to embodiments of the invention, each pixel 40 is divided into a plurality of sub-pixels 41,45, and respectively the storage capacitors 43,47 of each sub-pixel 41,45 is coupled to the sweep trace 15 of pairing lastrow, just is coupled to the sweep trace 15 of other row.As shown in Figure 1, the storage capacitors 43 that is positioned at N horizontal scanning line 15 is coupled to N-1 horizontal scanning line 15, and 47 of storage capacitors that are positioned at N+1 horizontal scanning line 15 are coupled to N horizontal scanning line 15.So, the level of storage capacitors 43,47 can be when on-off element 42,46 receives sweep signals, is subjected to the drive signal influence of pairing lastrow sweep trace 15 and changes the level of the pixel electrode of sub-pixel 41,45.So, scanner driver 10 of the present invention has the sweep signal of multistage level (level) by transmission, to regulate sub-pixel 41,45 storage capacitors 43,47 level, and then influence sub-pixel 41, the level of 45 pixel electrode, to allow the sub-pixel 41 of same pixel 40,45 have varying level, sub-pixel 41 like this, 45 promptly can produce not same electric field and act on sub-pixel 41, liquid crystal in 45 zones, just sub-pixel 41, liquid crystal meeting deflection different angles in 45 zones, so the liquid crystal in pixel 40 zone promptly can the deflection different angles, so when watching picture at arbitrary visual angle, can avoid or relax the phenomenon of off-axis color bias, and then improve the display performance of LCD.
Fig. 2 is the oscillogram of the sweep signal of the embodiment of the invention.As shown in the figure, the sweep signal tool three rank level of N-1 horizontal scanning line 15, it is respectively Vgh, Vgc1 and Vgl, the sweep signal of N horizontal scanning line 15 is tool three rank level also, it is respectively Vgh, Vgc2 and Vgl, and the sweep signal of N+1 horizontal scanning line 15 is identical with the sweep signal of N-1 horizontal scanning line 15, and in like manner, the sweep signal of N+2 horizontal scanning line 15 is identical with the sweep signal of N horizontal scanning line 15.The level of first sub-pixel 41 is coupled to N-1 horizontal scanning line 15 owing to be positioned at the storage capacitors 43 of first sub-pixel 41 of N horizontal scanning line 15, so can be influenced by the sweep signal of N-1 horizontal scanning line 15.When the level of the sweep signal that receives when the on-off element 42 of first sub-pixel 41 rose to Vgh by Vgl, storage capacitors 43 promptly can begin to charge and the level of first sub-pixel 41 promptly can rise.
When the level of sweep signal dropped to Vgc2 by Vgh, the level of storage capacitors 43 promptly can descend and the level of first sub-pixel 41 can be along with decline, and influenced by the level Vgc1 of the sweep signal of N-1 horizontal scanning line 15 and descend.Afterwards, the level of first sub-pixel 41 can rise to Vgl by Vgc1 along with the level of the sweep signal of N-1 horizontal scanning line 15 and rise.At last, the level of first sub-pixel 41 can drop to Vgl by Vgc2 along with the level of the sweep signal of N horizontal scanning line 15 and descend.From the above, the level difference that is positioned at first sub-pixel 41 of N horizontal scanning line 15 is | Vgc1-Vgl|.
In like manner, the level of storage capacitors 47 that is positioned at second sub-pixel 45 of N+1 horizontal scanning line 15 can be subjected to the sweep signal influence of N horizontal scanning line 15, and the level of second sub-pixel 45 can be affected thereupon.As shown in the figure, the level difference of second sub-pixel 45 is | Vgc2-Vgl|.Because the sweep signal of N-1 horizontal scanning line 15 and N horizontal scanning line 15 is difference to some extent, so first sub-pixel 41 that is positioned at N horizontal scanning line 15 and the level of second sub-pixel 45 that is positioned at N+1 horizontal scanning line 15 i.e. difference to some extent, and reach purpose of the present invention.In addition, according to the present invention, the level difference of first sub-pixel 41 is greater than the level difference of second sub-pixel 45, just | Vgc1-Vgl|〉| Vgc2-Vgl
|。In addition, because the characteristic of liquid crystal, the suffered electric field of the liquid crystal of same position must just can avoid the liquid crystal life-span to shorten as variation as the alternating current, so sweep signal of the present invention can be opposite along with picture (frame) change.As shown in the figure, the sweep signal of each horizontal scanning line 15 is opposite at first picture with the difference of second picture, just changes as alternating current.
Fig. 3 to Fig. 6 is other preferred embodiment of sweep signal of the present invention.The sweep signal tool second order level of the N horizontal scanning line 15 of Fig. 3, it is Vgh and Vgl.As seen from the figure, the level difference that is positioned at second sub-pixel 45 of N+1 horizontal scanning line 15 is 0, and the level difference that is positioned at first sub-pixel 41 of N horizontal scanning line 15 still is | Vgc1-Vgl|, so the level difference of first sub-pixel 41 is greater than the level difference of second sub-pixel 45.The sweep signal of Fig. 4 embodiment is all had a quadravalence level.The level of the sweep signal of N-1 horizontal scanning line 15 is Vgh, Vgc1, Vgc3 and Vgl, and the level of the sweep signal of N horizontal scanning line 15 is Vgh, Vgc2, Vgc4 and Vgl.The level difference that is positioned at first sub-pixel 41 of N horizontal scanning line 15 is | Vgc1-Vgl|, and the level difference that is positioned at second sub-pixel 45 of N+1 horizontal scanning line 15 is | Vgc2-Vgl|, and | Vgc1-Vgl|〉| Vgc2-Vgl|.
The sweep signal of the N horizontal scanning line 15 of embodiment has three rank level among Fig. 5, and it is Vgh, Vgc2 and Vgl.The level difference that is positioned at second sub-pixel 45 of N+1 horizontal scanning line 15 is | Vgc2-Vgl|, and it is identical with a last embodiment to be positioned at the level difference of first sub-pixel 41 of N horizontal scanning line 15, and | Vgc1-Vgl|〉| Vgc2-Vgl|.The sweep signal of the N horizontal scanning line 15 of Fig. 6 embodiment only has the second order level, and it is Vgh and Vgl.The level difference that is positioned at second sub-pixel 45 of N+1 horizontal scanning line 15 is 0, and it is identical with a last embodiment to be positioned at the level difference of first sub-pixel 41 of N horizontal scanning line 15, so the level difference of first sub-pixel 41 is greater than the level difference of second sub-pixel 45.
The circuit diagram of another preferred embodiment of Fig. 7 position the present invention.As shown in the figure, the storage capacitors 47 of second sub-pixel 45 of this embodiment is coupled to common electrode Vcom, the level of second sub-pixel 45 like this will can not regulated, but because the level of first sub-pixel 41 is regulated by the sweep signal of lastrow sweep trace 15 still can, so the level of first sub-pixel 41 and second sub-pixel 45 is difference to some extent still, solve the off-axis color bias phenomenon so also can make the liquid crystal deflection different angles in sub-pixel 41,45 zones of pixel 40.Can learn by Fig. 1 and Fig. 7 embodiment, the present invention is except these two kinds of embodiments, also the storage capacitors 43 of first sub-pixel 41 can be coupled to common electrode Vcom, and the storage capacitors 47 of second sub-pixel 45 is coupled to next line sweep trace 15, perhaps with the storage capacitors 43 of first sub-pixel 41 and second sub-pixel 45,47 are respectively coupled to pairing next line sweep trace 15, or even the storage capacitors 43 of first sub-pixel 41 can be coupled to lastrow sweep trace 15, and the storage capacitors 47 of second sub-pixel 45 is coupled to next line sweep trace 15, just is coupled to the sweep trace 15 of other row.
Fig. 8 is the circuit diagram of another preferred embodiment of the present invention.As shown in the figure, the on-off element 42,46 of the sub-pixel 41,45 of each pixel 40 of this embodiment is coupled to identical sweep trace 15, so can reduce the quantity of sweep trace 15 and reduces cost.In addition, the storage capacitors 43 of first sub-pixel 41 is coupled to lastrow sweep trace 15, the storage capacitors 47 of second sub-pixel 45 then is coupled to next line sweep trace 15, and the on-off element 42 of first sub-pixel 41 couples data line 25, the on-off element 46 of second sub-pixel 45 then with on-off element 42 electric couplings, so data-signal can be sent to the on-off element 46 of second sub-pixel 45 by the on-off element 42 of first sub-pixel 41, and promptly on-off element 42,46 is with equaling to couple identical data line 25.Learn by above-mentioned, the level of the sub-pixel 41,45 of pixel 40 will be regulated and the generation level differences by the lastrow sweep trace 15 and the sweep signal of next line sweep trace 15 respectively, make that the level of sub-pixel 41,45 is inequality, to avoid taking place the off-axis color bias phenomenon.
Fig. 9 is the oscillogram that is applied to the sweep signal of Fig. 8 embodiment.As shown in Figure 9, sweep signal all has the quadravalence level, and it is respectively Vgh, Vgc1, Vgc2 and Vgl.With the pixel 40 that is positioned at N horizontal scanning line 15 is example, when the level of the sweep signal of N horizontal scanning line 15 drops to Vgc1 by Vgh, the level of first sub-pixel 41 will be regulated by the sweep signal of N-1 horizontal scanning line 15, and the level of second sub-pixel 45 will be regulated by the sweep signal of N+1 horizontal scanning line 15.Sweep signal shown in Figure 10 also is applied to Fig. 8 embodiment, and Figure 10 embodiment is different from the sweep signal that Fig. 9 embodiment part is Figure 10 embodiment and all has three rank level, its be respectively Vgh, Vgc1 and, Vgc2.
The embodiment that Fig. 8 described also can be coupled to common electrode Vcom with the storage capacitors 47 of second sub-pixel 45 and not regulate, the storage capacitors 43 of first sub-pixel 41 still is coupled to lastrow sweep trace 15 and regulates, or the storage capacitors 43 of first sub-pixel 41 is coupled to common electrode Vcom and do not regulate, the storage capacitors 47 of second sub-pixel 45 still is coupled to next line sweep trace 15 and regulates.In addition, first sub-pixel 41 that N embodiment illustrated in fig. 8 is capable and the storage capacitors 43,47 of second sub-pixel 45 can be respectively coupled to the capable and capable sweep trace 15 of N+2 of N+1, and perhaps the storage capacitors 43,47 of first sub-pixel 41 that N is capable and second sub-pixel 45 is respectively coupled to the capable and capable sweep trace 15 of N-2 of N-1.
Figure 11 is the layout of Fig. 8 embodiment.For fear of circuit as shown in Figure 8, the storage capacitors 47 of second sub-pixel 45 when being coupled to next line sweep trace 15, must leap position itself sweep trace 15, so pixel 40 is designed to be
Type, and first sub-pixel 41 and second sub-pixel 45 are respectively
,
Type.Second sub-pixel 45 is coupled between two triangles of first sub-pixel 41 and is
Type.Sweep trace 15 is designed to be the ㄈ type, and the sweep trace 15 of even number line and odd-numbered line lays respectively at the both sides of LCD, and the opening of ㄈ type is relative.So, the horizontal straight line in below of ㄈ type sweep trace 15 can couple the below of pixel 40, and couple the on-off element 42,46 of first sub-pixel 41 and second sub-pixel 45, and can be across the top of the pixel 40 of next line, and couple the storage capacitors 43 of first sub-pixel 41 of pixel 40.In addition, the horizontal straight line in top of ㄈ type sweep trace 15 can be across the center section of the pixel 40 of lastrow, and couples the storage capacitors 47 of second sub-pixel 45 of the pixel 40 of lastrow.By above-mentioned explanation and accompanying drawing as can be known, such topological design can allow the sweep trace 15 that the storage capacitors 43,47 of sub-pixel 41,45 of pixel 40 need not the place of leap own, can couple with lastrow sweep trace 15 and next line sweep trace 15 respectively.
Figure 12 is the layout that is applied to Fig. 8 embodiment.The on-off element 42,46 of the sub-pixel 41,45 of this embodiment all couples with data line 25, and the neither Figure 11 embodiment that is same as of the form of sub-pixel 41,45 and sweep trace 15.The sub-pixel 41,45 of this embodiment is all rectangle, and first sub-pixel 41 and second sub-pixel 45 be up and down and arrange, and first sub-pixel 41 is positioned at second sub-pixel, 45 tops.In addition, sweep trace 15 is the saw-tooth sweep line, all is
Type, first sub-pixel 41 is above the saw-tooth sweep line 15 laterally between straight line and the intermediate lateral straight line, and 45 of second sub-pixels are positioned at
Between the horizontal straight line of the intermediate lateral straight line of type sweep trace 15 and below, the on-off element 42,46 of first sub-pixel 41 and second sub-pixel 45 is coupled to
The intermediate lateral straight line of type sweep trace 15 also couples data line 25.In addition, the horizontal straight line in the top of saw-tooth sweep line 15 couples storage capacitors 47 across second sub-pixel 45 of lastrow, and the horizontal straight line in below then couples storage capacitors 43 across first sub-pixel 41 of next line.
In sum, Liquid Crystal Display And Method For Driving of the present invention is mainly by becoming many sub-pixels with each pixel segmentation, and allow the described storage capacitors of described sub-pixel be respectively coupled to sweep trace with described sub-pixel different rows, perhaps allow one of them storage capacitors of described sub-pixel be coupled to common electrode, and the storage capacitors of all the other sub-pixels is coupled to the sweep trace with the sub-pixel different rows, this fit on has the sweep signal of multistage level, can allow the pixel electrode level of at least one sub-pixel of pixel be regulated, with the sub-pixel tool varying level respectively that allows in the same pixel, and make the different electric field intensity of described sub-pixel tool, be used to order about the liquid crystal deflection different angle of sub-pixel of each pixel and the different penetrances of tool, so can avoid when different visual angles is watched the picture of LCD, produce the phenomenon of brightness and color distortion, and improve the display performance of LCD.
Though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; those skilled in the art without departing from the spirit and scope of the present invention; when can doing a little change and modification, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.
Claims (24)
1. LCD, it comprises:
N bar sweep trace is row and arranges, and N is a positive integer;
Many data lines are row arrangement and staggered with described sweep trace;
A plurality of pixels, correspond respectively to described sweep trace, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with on-off element, storage capacitors and pixel electrode, described pixel electrode respectively with described on-off element and described storage capacitors electric coupling, the on-off element of the sub-pixel of each pixel couples the sweep trace with delegation, and the storage capacitors of the sub-pixel of each pixel is respectively coupled to the sweep trace with described sub-pixel different rows, and described sub-pixel couples described data line;
Data driver couples described data line and difference data signal to described sub-pixel; And
Scanner driver couples described sweep trace and transmits the on-off element of sub-pixel of sweep signal to each row respectively, and drives described on-off element conducting, receiving this data-signal,
Wherein, the sweep signal that this scanner driver transmits has multistage level, and regulates the level of at least one pixel electrode in the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
2. LCD as claimed in claim 1, wherein each pixel has first sub-pixel and second sub-pixel.
3. LCD as claimed in claim 2, two storage capacitors of first sub-pixel of wherein corresponding N bar sweep trace and second sub-pixel are respectively coupled to N-1 bar sweep trace and N+1 bar sweep trace.
4. LCD as claimed in claim 2, two storage capacitors of first sub-pixel of wherein corresponding N bar sweep trace and second sub-pixel are respectively coupled to N+1 bar sweep trace and N+2 bar sweep trace.
5. LCD as claimed in claim 2, two storage capacitors of first sub-pixel of wherein corresponding N bar sweep trace and second sub-pixel are respectively coupled to N-1 bar sweep trace and N-2 bar sweep trace.
6. LCD as claimed in claim 3, wherein this N-1 bar sweep trace is across to described pixel region that should N bar sweep trace, and this N-1 bar sweep trace is coupled to the storage capacitors to a sub-pixel in should each pixel of N bar sweep trace.
7. LCD as claimed in claim 3, wherein this N-1 bar sweep trace is across the described pixel region of corresponding N-2 bar sweep trace, and this N-1 bar sweep trace is coupled to the storage capacitors to a sub-pixel in should each pixel of N-2 bar sweep trace.
8. LCD as claimed in claim 3, wherein this N-1 bar sweep trace is across to the pixel region that should N bar sweep trace and the pixel region of corresponding N-2 bar sweep trace, this N-1 bar sweep trace be coupled to should N bar sweep trace and each pixel of this N-2 bar sweep trace in the storage capacitors of a sub-pixel.
9. LCD as claimed in claim 2, wherein the level variable quantity of the storage capacitors of this first sub-pixel is greater than the level variable quantity of the storage capacitors of this second sub-pixel.
10. LCD as claimed in claim 1, wherein the on-off element of the sub-pixel of each pixel all couples identical data line.
11. LCD as claimed in claim 1, wherein this data driver and this scanner driver also couple time schedule controller, and this time schedule controller is controlled this data driver and this scanner driver.
12. LCD as claimed in claim 1, wherein each sub-pixel has liquid crystal capacitance, this liquid crystal capacitance and this on-off element and this storage capacitors electric coupling.
13. a LCD, it comprises:
N bar sweep trace is row and arranges, and N is a positive integer;
Many data lines are row arrangement and staggered with described sweep trace;
A plurality of pixels, correspond respectively to described sweep trace, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with on-off element, storage capacitors and pixel electrode, this pixel electrode respectively with this on-off element and this storage capacitors electric coupling, the on-off element of the sub-pixel of each pixel couples the sweep trace with delegation, one of them storage capacitors of the sub-pixel of each pixel is coupled to common electrode, the storage capacitors of all the other sub-pixels is coupled to and the sweep trace of this sub-pixel different rows, and described sub-pixel couples described data line;
Data driver couples described data line and difference data signal to described sub-pixel; And
Scanner driver couples described sweep trace and transmits the on-off element of sub-pixel of sweep signal to each row respectively, and drives described on-off element conducting, receiving this data-signal,
Wherein, the sweep signal that this scanner driver transmits has multistage level, and regulates the level of at least one pixel electrode in the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
14. LCD as claimed in claim 13, wherein each pixel has first sub-pixel and second sub-pixel.
15. LCD as claimed in claim 14, the storage capacitors of first sub-pixel of wherein corresponding N bar sweep trace is coupled to this common electrode, and two storage capacitors of second sub-pixel of corresponding N bar sweep trace are coupled to N+1 bar sweep trace.
16. LCD as claimed in claim 14, the storage capacitors of first sub-pixel of wherein corresponding N bar sweep trace is coupled to N-1 bar sweep trace, and the storage capacitors of second sub-pixel of corresponding N bar sweep trace is coupled to this common electrode.
17. LCD as claimed in claim 14, wherein the level of the storage capacitors of a sub-pixel in this first sub-pixel and this second sub-pixel is regulated, and the level of this storage capacitors of another sub-pixel is not regulated.
18. LCD as claimed in claim 13, wherein the on-off element of the sub-pixel of each pixel all couples identical data line.
19. a LCD, it comprises:
The multi-strip scanning line, it is row and arranges;
Many data lines, it is row arrangement and staggered with described sweep trace;
A plurality of pixels, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with on-off element, storage capacitors and pixel electrode, this pixel electrode respectively with this on-off element and this storage capacitors electric coupling, the on-off element of each sub-pixel of each pixel respectively couples this sweep trace, the storage capacitors of the sub-pixel of each pixel is respectively coupled to the sweep trace with described sub-pixel different rows, and described sub-pixel couples described data line;
Data driver couples described data line and difference data signal to described sub-pixel; And
Scanner driver couples described sweep trace and transmits the on-off element of sub-pixel of sweep signal to each row respectively, and drives described on-off element conducting, receiving this data-signal,
Wherein, the sweep signal that this scanner driver transmits has multistage level, and regulates the level of at least one pixel electrode of the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
20. the driving method of a LCD, this LCD has the multi-strip scanning line, many data lines and a plurality of pixel, described sweep trace and described data line are row and row arrangement and interlaced respectively, each pixel has a plurality of sub-pixels, each sub-pixel respectively is provided with the on-off element of electric coupling, storage capacitors and pixel electrode, this on-off element couples sweep trace, one of them storage capacitors of the sub-pixel of each pixel is coupled to common electrode, the storage capacitors of all the other sub-pixels is coupled to the sweep trace with described sub-pixel different rows, described sub-pixel couples described data line, and this method comprises:
Transmit the sweep trace of sweep signal respectively, and be sent to the on-off element of the described sub-pixel of each row, to drive described on-off element conducting to each row; And
Data signal is to described sub-pixel respectively;
Wherein, this sweep signal has multistage level, and regulates the level of at least one pixel electrode of the sub-pixel of same pixel, and the sub-pixel that orders about this same pixel has varying level.
21. driving method as claimed in claim 20, wherein the on-off element of the sub-pixel of each pixel couples the sweep trace with delegation.
22. driving method as claimed in claim 20, wherein the on-off element of each sub-pixel of each pixel couples this sweep trace of different rows respectively.
23. driving method as claimed in claim 20, wherein each pixel has first sub-pixel and second sub-pixel.
24. driving method as claimed in claim 23, wherein the level of the storage capacitors of a sub-pixel in this first sub-pixel and this second sub-pixel is regulated, and the level of this storage capacitors of another this sub-pixel is not regulated.
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| CNB2007101413228A CN100520511C (en) | 2007-08-06 | 2007-08-06 | Liquid crystal display device and its driving method |
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| CNB2007101413228A CN100520511C (en) | 2007-08-06 | 2007-08-06 | Liquid crystal display device and its driving method |
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| CN100520511C true CN100520511C (en) | 2009-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773402A (en) * | 2016-12-29 | 2017-05-31 | 深圳市华星光电技术有限公司 | Array base palte and liquid crystal display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7567228B1 (en) * | 2008-09-04 | 2009-07-28 | Au Optronics Corporation | Multi switch pixel design using column inversion data driving |
| CN103675372A (en) * | 2013-12-16 | 2014-03-26 | 上海华岭集成电路技术股份有限公司 | Random-order electrical level generator |
| CN107065352B (en) * | 2017-04-17 | 2019-11-05 | 深圳市华星光电半导体显示技术有限公司 | Eight farmland dot structures |
| CN108761936B (en) * | 2018-04-02 | 2020-06-30 | 深圳市华星光电半导体显示技术有限公司 | Vertical alignment type liquid crystal display |
| GB2622733A (en) * | 2021-12-29 | 2024-03-27 | Boe Technology Group Co Ltd | Scan circuit, display apparatus, method of driving scan circuit |
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2007
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773402A (en) * | 2016-12-29 | 2017-05-31 | 深圳市华星光电技术有限公司 | Array base palte and liquid crystal display panel |
| CN106773402B (en) * | 2016-12-29 | 2020-04-10 | 深圳市华星光电技术有限公司 | Array substrate and liquid crystal display panel |
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