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:
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:
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:
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:
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
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:
Final pixel voltage: Vp1=Vd+ Δ Vp1=8+ (0.75)=7.25V
Change in voltage on second pixel, 3 electrodes:
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:
Final pixel voltage: Vp11=Vd+ Δ Vp11=4+ (1.25)=2.75V; Change in voltage on second pixel, 3 electrodes:
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,
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:
Final pixel voltage: Vp1=Vd+ Δ Vp1=8+ (0.75)=7.25V; Change in voltage on second pixel, 3 electrodes:
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:
Final pixel voltage: Vp11=Vd+ Δ Vp11=4+ (1.5)=2.5V; Change in voltage on second pixel, 3 electrodes:
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,
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:
Final pixel voltage: Vp1=Vd+ Δ Vp1=8+ (1.5)=6.5V; Change in voltage on second pixel, 3 electrodes:
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:
Final pixel voltage: Vp11=Vd+ Δ Vp11=4+ (1.25)=2.75V; Change in voltage on second pixel, 3 electrodes:
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.