CN101369409B - Method for driving liquid crystal display panel - Google Patents

Abstract

The invention discloses a drive method of LCD panel, the LCD panel comprises a plurality of pixels distributed in rectangle, each pixel is divided into a first pixel and a second pixel which are driven by a first scanning line and a second scanning line. The invention is characterized in that the drive method comprises following steps: providing scanning signals for the first scanning line and thesecond scanning line at the same time; the scanning signal comprises a gating electric potential Vgh, a closedown electric potential Vgl and a top rake electric potential; the top rake electric potential V1 on the first scanning line is not equal to the top rake electric potential V2 on the second scanning line. The drive method of LCD panel provided by the invention can effectively improve phenomenon of side view color deviation under vertical distributing mode.

Description

The driving method of display panels

Technical field

The present invention relates to a kind of driving method of display panels, particularly relate to a kind of driving method that improves the display panels of side-looking colour cast under the vertical alignment mode.

Background technology

Liquid crystal display has become the main flow display device, and the LCD TV development is advanced by leaps and bounds, and LCD also has large development.

In the wide viewing angle technology of LCD, (Vertically Aligned's vertical orientation VA) is widely used.But when observing the display panels of VA pattern from the side, the phenomenon of colour cast can take place.

In order to improve this phenomenon, Fuji Tsu has proposed a sub-pixel is divided into two parts (A pixel and B pixel), obtains different transmitances by A pixel and B pixel are added different voltage, comes colour mixture to solve the method for colour cast.Present existing driving method has capacitive coupling type (CC) and bicrystal cast (TT).The CC type comprises that A pixel, B pixel also have the electric capacity of coupling usefulness between A, the B pixel, and the CC type has individual defective: owing to the brightness difference of A, B pixel, can reduce overall brightness when high gray.The TT type applies different voltage data signals then by open two TFT in the different time, so frequency need double the power consumption increase.

The equivalent electrical circuit of A pixel or B pixel as shown in Figure 1, data line Dm and sweep trace Gn intersection are formed with pixel, described pixel is controlled by a thin film transistor (TFT) Tr.The signal of sweep trace as shown in Figure 2, when the sweep signal on the sweep trace by high voltage Vgh when low-voltage Vgl changes, because have stray capacitance Cgd between TFT grid and the drain electrode, according to the charge conservation principle, voltage variation delta Vp can be expressed as following formula on the pixel electrode:

$\mathrm{\ΔVp}=\frac{\mathrm{Cgd}}{\mathrm{Cgd}+\mathrm{Clc}+\mathrm{Cst}}\×(\mathrm{Vgl}-\mathrm{Vgh})$

So, final pixel voltage Vp=Vd+ Δ Vp, wherein, Cgd is the stray capacitance between grid and the drain electrode, and Clc is a liquid crystal capacitance, and Cst is a memory capacitance, and Vd is the added voltage of signal wire.

Summary of the invention

Technical matters to be solved by this invention provides a kind of driving method of display panels, improves display panels under the vertical alignment mode and observes the phenomenon that colour cast takes place from the side.

The present invention solves the problems of the technologies described above the driving method that the technical scheme that adopts provides a kind of display panels, this display panels comprises a plurality of pixels that are matrix distribution, each pixel is divided into first pixel and second pixel, described first pixel is by first scanning line driving, described second pixel is by second scanning line driving, wherein, described driving method comprises the steps: to provide sweep signal simultaneously to first sweep trace and second sweep trace; Described sweep signal comprises gating current potential Vgh, closes current potential Vgl and top rake current potential; Top rake current potential V2 on top rake current potential V1 on described first sweep trace and described second sweep trace is unequal.

The driving method of above-mentioned display panels, when showing the N frame, the top rake current potential on first sweep trace is V1, the top rake current potential on second sweep trace is V2; When showing the N+1 frame, the top rake current potential on first sweep trace becomes V2 by V1, and the top rake current potential on second sweep trace becomes V1 by V2; Wherein N is a natural number.

The driving method of above-mentioned display panels, the top rake current potential V1 of described first sweep signal equals gating current potential Vgh.

The driving method of above-mentioned display panels, the top rake current potential V2 of described second sweep signal equals gating current potential Vgh.

The present invention contrasts prior art following beneficial effect: the display mode of existing bicrystal cast is alternately controlled data-signal on the pixel electrode by double T FT timesharing, realizes the change in voltage of pixel electrode, needs control data signal and sweep signal simultaneously.The top rake voltage that the present invention only need regulate sweep signal can be realized the change in voltage of pixel electrode, realizes the multidomain display effect, effectively improves the phenomenon of side-looking colour cast under the vertical alignment mode.At inversion driving pattern commonly used at present, the present invention promptly can be applicable to the inversion driving pattern with the top rake current potential alternate on first sweep trace and second sweep trace.

Description of drawings

Fig. 1 is existing first pixel 2 or second pixel, 3 equivalent circuit diagrams.

Fig. 2 is Fig. 1 scanning-line signal synoptic diagram.

Fig. 3 is a single dot structure synoptic diagram among the present invention.

Fig. 4 is a scanning line driving waveform synoptic diagram among the present invention.

Fig. 5 is the sweep trace waveform synoptic diagram during V2=Vgh among the present invention.

Fig. 6 is the sweep trace waveform synoptic diagram during V1=Vgh among the present invention.

Among the figure:

1 single complete pixel 2 first pixels 3 second pixels

Gn sweep trace Dm data line GnA first sweep trace

The GnB second sweep trace Vgh gating current potential Vgl closes current potential

V1 top rake current potential V2 top rake current potential

Embodiment

The invention will be further described below in conjunction with drawings and Examples.

Fig. 3 is a single dot structure synoptic diagram among the present invention.

Display panels comprises a plurality of pixels that are matrix distribution among the present invention, Fig. 3 has provided single dot structure synoptic diagram among the present invention, data line Dm and sweep trace intersection are formed with single complete pixel 1, single complete pixel 1 is divided into first pixel 2 and second pixel 3, drive by thin film transistor (TFT) Tr1 and Tr2 by the first sweep trace GnA and the second sweep trace GnB respectively, single complete pixel 1 also comprise one parallel with sweep trace and be in horizontal storage electric capacity concentric line with one deck (figure does not show), this storage capacitors concentric line and pixel electrode form memory capacitance, m wherein, n is a natural number.

The driving method of display panels of the present invention is by providing sweep signal simultaneously to the first sweep trace GnA and the second sweep trace GnB, and make the top rake current potential V1 on the described first sweep trace GnA different with top rake current potential V2 on the described second sweep trace GnB, thereby make final first pixel 2 different with second pixel, 3 voltages, realize the multidomain display effect, effectively improve the phenomenon of side-looking colour cast under the vertical alignment mode.

At inversion driving pattern commonly used at present, the present invention promptly can be applicable to the inversion driving pattern with the top rake current potential alternate on first sweep trace and second sweep trace, and concrete drive waveforms shape as shown in Figure 4.The first sweep trace GnA, the second sweep trace GnB open simultaneously, and when the N frame that shows, the top rake current potential of the first sweep trace GnA is V1, and the top rake current potential of the second sweep trace GnB is V2, and V1 is not equal to V2; When showing the N+1 frame, the top rake current potential of the first sweep trace GnA becomes V2 by V1, and the top rake current potential of the second sweep trace GnB becomes V1 by V2; Wherein N is a natural number.

With reference to Fig. 3 and Fig. 4, when showing the N frame, the top rake current potential of the first sweep trace GnA is V1, when the first sweep trace GnA voltage becomes Vgl by V1, causes the change in voltage Δ Vp1 on first pixel, 2 electrodes to be expressed as:

$\mathrm{\ΔVp}1=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\×(\mathrm{Vgl}-V1)$

First pixel, 2 final pixel voltage Vp1 can be expressed as Vp1=Vd+ Δ Vp1, and wherein Vd is the voltage that is added on the data Dm; The top rake current potential of the second sweep trace GnB is V2, when the second sweep trace GnB voltage becomes Vgl by V2, causes the change in voltage Δ Vp2 on second pixel, 3 electrodes to be expressed as:

$\mathrm{\&Delta;<figure-callout\; id="2"\; label="Vp"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Vp</figure-callout>}2=\frac{\mathrm{Cgd}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V2)$

The pixel voltage Vp2 of final second pixel 3 can be expressed as: Vp2=Vd+ Δ Vp2, because first pixel 2 is identical with the structure of second pixel 3, so Cgd1=Cgd2, Clc1=Clc2, Cst1=Cst2, because V1 ≠ V2, so Δ Vp1 ≠ Δ Vp2, the voltage that then can obtain on first pixel 2 and second pixel 3 is unequal, i.e. Vp1 ≠ Vp2.Thereby first pixel 2 is different with the brightness that second pixel 3 sees through light, can improve the problem of colour cast by colour mixture.Certainly, first pixel 2 and second pixel, 3 structures also can realize the change in voltage of pixel electrode by regulating top rake voltage not simultaneously.

When the N+1 frame, because the reversal of poles of data-signal, so the top rake current potential of the first sweep trace GnA becomes V1 by the top rake current potential that V1 becomes V2, the second sweep trace GnB by V2.Then the change in voltage Δ Vp11 on first pixel, 2 electrodes can be expressed as:

$\mathrm{\&Delta;Vp}11=\frac{\mathrm{Cgd}11}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V2)$

And first pixel, 2 final pixel voltage Vp11 can be expressed as Vp11=Vd+ Δ Vp11, and wherein Vd is the voltage that is added on the data Dm; Change in voltage Δ Vp22 on second pixel, 3 electrodes can be expressed as:

$\mathrm{\&Delta;Vp}22=\frac{\mathrm{Cgd}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V1)$

And first pixel, 2 final pixel voltage Vp22 can be expressed as Vp22=Vd+ Δ Vp22, and wherein Vd is the voltage that is added on the data Dm.In like manner can get, Vp11 ≠ Vp22, when the N+1 frame, first pixel 2 is different with the brightness that second pixel 3 sees through light, can improve the problem of colour cast by colour mixture.

Exemplify one group of concrete voltage below technique effect of the present invention is described: set Vgh=25V, Vgl=-5V, V1=10V, V2=20V, and

$\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}=0.05$

The N frame shows positive polarity, the top rake current potential V1=10V on the first sweep trace GnA, the top rake current potential V2=20V of the second sweep trace GnB; The voltage of data line is 8V.First pixel, 2 pixel voltage change:

$\mathrm{\&Delta;Vp}1=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V1)=0.05\&times;(-5-10)=-0.75V$

Final pixel voltage: Vp1=Vd+ Δ Vp1=8+ (0.75)=7.25V

Change in voltage on second pixel, 3 electrodes:

$\mathrm{\&Delta;<figure-callout\; id="2"\; label="Vp"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Vp</figure-callout>}2=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V2)=0.05\&times;(-5-20)=-1.25V$

Final pixel voltage: Vp2=Vd+ Δ Vp2=8+ (1.25)=6.75V.When showing the N frame, first pixel, 2 voltages are different with second pixel, 3 voltages.

When the N+1 frame, the reversal of poles of data-signal, data line voltage is 4V.The top rake current potential of the first sweep trace GnA becomes V2=20V by V1=10V, and the top rake current potential of the second sweep trace GnB becomes V1=10V by V2=20V, then the change in voltage on first pixel, 2 electrodes:

$\mathrm{\&Delta;Vp}11=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V2)=0.05\&times;(-5-20)=-1.25V$

Final pixel voltage: Vp11=Vd+ Δ Vp11=4+ (1.25)=2.75V; Change in voltage on second pixel, 3 electrodes:

$\mathrm{\&Delta;Vp}22=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V1)=0.05\&times;(-5-10)=-0.75V$

Final pixel voltage: Vp22=Vd+ Δ Vp22=4+ (0.75)=3.25V.Similarly, first pixel, 2 voltages and second pixel, 3 voltages are unequal.

By above-mentioned example, the present invention makes the top rake current potential V2 of GnB on top rake current potential V1 and described second sweep trace on the described first sweep trace GnA different as can be seen, thereby make final first pixel 2 different with second pixel, 3 voltages, realize the multidomain display effect, by regulating concrete top rake current potential, can effectively improve the phenomenon of side-looking colour cast under the vertical alignment mode.Regulate for convenient, the present invention can simplify driving method, only adopts a top rake current potential to regulate, and promptly allows another top rake current potential and gating current potential Vgh equate.

Fig. 5 is the sweep trace waveform synoptic diagram during V2=Vgh among the present invention.

Please refer to Fig. 3 and Fig. 5, Vgh=25V, Vgl=-5V, V1=10V, V2=Vgh=25V wherein,

$\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}=0.05$

The N frame shows positive polarity, the top rake current potential V1=10V of GnA, the top rake current potential V2=25V of GnB; The voltage of data line is 8V; Then cause the change in voltage on first pixel, 2 electrodes:

$\mathrm{\&Delta;Vp}1=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V1)=0.05\&times;(-5-10)=-0.75V$

Final pixel voltage: Vp1=Vd+ Δ Vp1=8+ (0.75)=7.25V; Change in voltage on second pixel, 3 electrodes:

$\mathrm{\&Delta;<figure-callout\; id="2"\; label="Vp"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Vp</figure-callout>}2=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V2)=0.05\&times;(-5-25)=-1.5V$

Final pixel voltage: Vp2=Vd+ Δ Vp2=8+ (1.5)=6.5V.When showing the N frame, first pixel, 2 voltages are different with second pixel, 3 voltages.

When the N+1 frame, the reversal of poles of data-signal, data line voltage is 4V.The top rake current potential of the first sweep trace GnA becomes V2=25V by V1=10V, and the top rake current potential on the second sweep trace GnB becomes V1=10V by V2=25V.The change in voltage on first pixel, 2 electrodes then:

$\mathrm{\&Delta;Vp}11=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V2)=0.05\&times;(-5-25)=-1.5V$

Final pixel voltage: Vp11=Vd+ Δ Vp11=4+ (1.5)=2.5V; Change in voltage on second pixel, 3 electrodes:

$\mathrm{\&Delta;Vp}22=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V1)=0.05\&times;(-5-10)=-0.75V$

Final pixel voltage: Vp22=Vd+ Δ Vp22=4+ (0.75)=3.25V.Similarly, first pixel, 2 voltages and second pixel, 3 voltages are unequal.

Fig. 6 is the sweep trace waveform synoptic diagram during V1=Vgh among the present invention.

Please refer to Fig. 3 and Fig. 6, Vgh=25V, Vgl=-5V, V2=20V, V1=Vgh=25V wherein,

$\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}=0.05$

The N frame shows positive polarity, the top rake current potential V1=25V on the first sweep trace GnA, the top rake current potential V2=10V on the second sweep trace GnB; The voltage of data line is 8V; Then cause the change in voltage on first pixel, 2 electrodes:

$\mathrm{\&Delta;Vp}1=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V1)=0.05\&times;(-5-25)=-1.5V$

Final pixel voltage: Vp1=Vd+ Δ Vp1=8+ (1.5)=6.5V; Change in voltage on second pixel, 3 electrodes:

$\mathrm{\&Delta;<figure-callout\; id="2"\; label="Vp"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Vp</figure-callout>}2=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V2)=0.05\&times;(-5-20)=-1.25V$

Final pixel voltage: Vp2=Vd+ Δ Vp2=8+ (1.25)=6.75V.When showing the N frame, first pixel, 2 voltages are different with second pixel, 3 voltages.

When the N+1 frame, the reversal of poles of data-signal, data line voltage is 4V.The top rake current potential of the first sweep trace GnA becomes V2=25V by V1=10V, and the top rake current potential of the second sweep trace GnB becomes V1=10V by V2=25V, then the change in voltage on first pixel, 2 electrodes:

$\mathrm{\&Delta;Vp}11=\frac{\mathrm{Cgd}1}{\mathrm{Cgd}1+\mathrm{Clc}1+\mathrm{Cst}1}\&times;(\mathrm{Vgl}-V2)=0.05\&times;(-5-20)=-1.25V$

Final pixel voltage: Vp11=Vd+ Δ Vp11=4+ (1.25)=2.75V; Change in voltage on second pixel, 3 electrodes:

$\mathrm{\&Delta;Vp}22=\frac{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2}{\mathrm{<figure-callout\; id="2"\; label="Cgd"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cgd</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Clc"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Clc</figure-callout>}2+\mathrm{<figure-callout\; id="2"\; label="Cst"\; filenames="H2008102012065E00021.png"\; state="\{\{state\}\}">Cst</figure-callout>}2}\&times;(\mathrm{Vgl}-V1)=0.05\&times;(-5-25)=-1.5V$

Final pixel voltage: Vp22=Vd+ Δ Vp22=4+ (1.5)=2.5V.Similarly, first pixel, 2 voltages and second pixel, 3 voltages are unequal.

Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.

Claims (4)

1. the driving method of a display panels, this display panels comprises a plurality of pixels that are matrix distribution, each pixel is divided into first pixel and second pixel, described first pixel is by first scanning line driving, described second pixel is by second scanning line driving, it is characterized in that described driving method comprises the steps: to provide sweep signal simultaneously to first sweep trace and second sweep trace; Described sweep signal comprises gating current potential Vgh, closes current potential Vg1 and top rake current potential; Top rake current potential V2 on top rake current potential V1 on described first sweep trace and described second sweep trace is unequal.

2. the driving method of display panels according to claim 1 is characterized in that, when showing the N frame, the top rake current potential on first sweep trace is V1, and the top rake current potential on second sweep trace is V2; When showing the N+1 frame, the top rake current potential on first sweep trace becomes V2 by V1, and the top rake current potential on second sweep trace becomes V1 by V2; Wherein N is a natural number.

3. the driving method of display panels according to claim 1 and 2 is characterized in that, the top rake current potential V1 of described first sweep signal equals gating current potential Vgh.

4. the driving method of display panels according to claim 1 and 2 is characterized in that, the top rake current potential V2 of described second sweep signal equals gating current potential Vgh.

Images