Summary of the invention
The present invention relates to a kind of display panels and the liquid crystal indicator of using it, the auxiliary electrode that orientation is used in the pixel receives the pixel voltage of neighbor via a switch, problem with the grayscale voltage skew of the neighbor that prevents to be caused because of the coupling capacitance effect can improve image quality effectively.
The present invention proposes a kind of display panels, comprises a data line, one first sweep trace, one second sweep trace, one first pixel, one second pixel and an auxiliary electrode.First pixel comprises one first pixel electrode, one first switch and a second switch.Wherein, the first input end of first switch is coupled to data line, and the first controlled end of first switch is coupled to first sweep trace, and first output terminal of first switch is coupled to first pixel electrode.This of second switch second input end is coupled to data line, and the second controlled end of second switch is coupled to first sweep trace.Second pixel comprises one second pixel electrode and one the 3rd switch.Wherein, the 3rd input end of the 3rd switch is coupled to data line, and the 3rd controlled end of the 3rd switch is coupled to second sweep trace, and the 3rd output terminal of the 3rd switch is coupled to second pixel electrode.Auxiliary electrode is coupled to second output terminal of second switch, and auxiliary electrode is adjacent to second pixel electrode.Wherein, first pixel electrode and second pixel electrode in order to receive the pixel voltage of opposed polarity, make auxiliary electrode different with the polarity of voltage of second pixel electrode respectively, make second pixel have a plurality of display fields by this.
The present invention also proposes a kind of display panels, comprises one scan line, one first data line, one second data line, one first pixel, one second pixel and an auxiliary electrode.First pixel comprises one first pixel electrode, one first switch and a second switch.Wherein the first input end of first switch is coupled to first data line, and the first controlled end of first switch is coupled to sweep trace, and first output terminal of first switch is coupled to first pixel electrode.Second input end of second switch is coupled to first data line, and the second controlled end of second switch is coupled to sweep trace.Second pixel comprises one second pixel electrode and one the 3rd switch.Wherein the 3rd input end of the 3rd switch is coupled to second data line, and the 3rd controlled end of the 3rd switch is coupled to sweep trace, and the 3rd output terminal of the 3rd switch is coupled to second pixel electrode.Auxiliary electrode is coupled to second output terminal of second switch, and auxiliary electrode is adjacent to second pixel electrode.Wherein, first pixel electrode and second pixel electrode in order to receive the pixel voltage of opposed polarity, make auxiliary electrode different with the polarity of voltage of second pixel electrode respectively, make second pixel have a plurality of display fields by this.
The present invention reintroduces a kind of liquid crystal indicator, comprises a data driver, one scan driver and a display panels.Display panels comprises a data line, one first sweep trace, one second sweep trace, one first pixel, one second pixel and an auxiliary electrode.Data line is coupled to data driver, and first sweep trace and second sweep trace then are coupled to scanner driver.First pixel comprises one first pixel electrode, one first switch and a second switch.Wherein, the first input end of first switch is coupled to data line, and the first controlled end of first switch is coupled to first sweep trace, and first output terminal of first switch is coupled to first pixel electrode.This of second switch second input end is coupled to data line, and the second controlled end of second switch is coupled to first sweep trace.Second pixel comprises one second pixel electrode and one the 3rd switch.Wherein, the 3rd input end of the 3rd switch is coupled to data line, and the 3rd controlled end of the 3rd switch is coupled to second sweep trace, and the 3rd output terminal of the 3rd switch is coupled to second pixel electrode.The auxiliary electrical polar system is coupled to second output terminal of second switch, and auxiliary electrode is adjacent to second pixel electrode.Wherein, first pixel electrode and second pixel electrode in order to receive the pixel voltage of opposed polarity, make auxiliary electrode different with the polarity of voltage of second pixel electrode respectively, make second pixel have a plurality of display fields by this.
The present invention also proposes a kind of liquid crystal indicator, comprises a data driver, one scan driver and a display panels.Display panels comprises one scan line, one first data line, one second data line, one first pixel, one second pixel and an auxiliary electrode.First data line and second data line are coupled to data driver, and sweep trace then is coupled to scanner driver.First pixel comprises one first pixel electrode, one first switch and a second switch.Wherein the first input end of first switch is coupled to first data line, and the first controlled end of first switch is coupled to sweep trace, and first output terminal of first switch is coupled to first pixel electrode.Second input end of second switch is coupled to first data line, and the second controlled end of second switch is coupled to sweep trace.Second pixel comprises one second pixel electrode and one the 3rd switch.Wherein the 3rd input end of the 3rd switch is coupled to second data line, and the 3rd controlled end of the 3rd switch is coupled to sweep trace, and the 3rd output terminal of the 3rd switch is coupled to second pixel electrode.Auxiliary electrode is coupled to second output terminal of second switch, and auxiliary electrode is adjacent to second pixel electrode.Wherein, first pixel electrode and second pixel electrode in order to receive the pixel voltage of opposed polarity, make auxiliary electrode different with the polarity of voltage of second pixel electrode respectively, make second pixel have a plurality of display fields by this.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Embodiment
Please refer to Fig. 1, it shows the synoptic diagram of a liquid crystal indicator.As shown in Figure 1, liquid crystal indicator 20 comprises display panels 210, data driver 220 and scanner driver 230.Display panels 210 comprises a plurality of pixel P, data line DL, sweep trace SL.Data driver 220 is coupled to data line DL, and exports corresponding data-signal to pixel P through data line DL.And scanner driver 230 is coupled to sweep trace SL, and through sweep trace SL output scanning signal with each row pixel of activation in regular turn.
Each pixel P comprises two switches and an auxiliary electrode on the display panels 210, one of them switch is coupled to the pixel electrode in each pixel, another switch then is the auxiliary electrode that is coupled in the neighborhood pixels, uses so that the auxiliary electrode in the neighborhood pixels has the voltage of pixel electrode identical polar therewith.(thin film transistor TFT) is example to each switch in the pixel, and the input end of each switch is the example explanation with the source electrode, and the controlled end of each switch is the example explanation with the grid, and the output terminal of each switch then is the example explanation with the drain electrode with thin film transistor (TFT).The grid of each switch is coupled to sweep trace, and the source electrode of each switch is coupled to data line.
Auxiliary electrode among each pixel P can be electrically connected with neighbor longitudinally, or is electrically connected with horizontal neighbor, below illustrates the different pixels structure with auxiliary electrode design.
Embodiment one
Please refer to Fig. 2,3, Fig. 2 shows the equivalent circuit diagram of the dot structure of the embodiment of the invention one, and Fig. 3 shows the equivalent circuit diagram of the dot structure clipped storage capacitors of Fig. 2.Present embodiment is to be example with vertical two adjacent pixels.As shown in Figure 2, the first pixel P1 comprises one first pixel electrode PE1, one first switch T1 and a second switch T2.Wherein, the first input end of the first switch T1 (source electrode) is coupled to data line DL, and the first controlled end (grid) of the first switch T1 is coupled to the first sweep trace SL1, and first output terminal (drain electrode) of the first switch T1 is coupled to the first pixel electrode PE1.Second input end of second switch T2 is coupled to data line DL, and the second controlled end of second switch T2 is coupled to the first sweep trace SL1.
The second pixel P2 comprises one second pixel electrode PE2, one the 3rd switch T3 and one the 4th switch T4.Wherein, the 3rd input end of the 3rd switch T3 is coupled to data line DL, and the 3rd controlled end of the 3rd switch T3 is coupled to the second sweep trace SL2, and the 3rd output terminal of the 3rd switch T3 is coupled to the second pixel electrode PE2.The four-input terminal of the 4th switch T4 is coupled to data line DL, and its 4th controlled end is coupled to the second sweep trace SL2.Auxiliary electrode AE is coupled to second output terminal of second switch T2, and auxiliary electrode AE is adjacent to the second pixel electrode PE2.The 4th output terminal of the 4th switch T4 then is couple to the auxiliary electrode (not shown) of next neighbor.
In the first pixel P1, form one first liquid crystal capacitance between the first pixel electrode PE1 and the common electrode (not shown).The first pixel P1 also comprises one first storage capacitors Cst1 and one second storage capacitors Cst2, and wherein the first storage capacitors Cst1 is coupled to the first switch T1, and the second storage capacitors Cst2 is coupled to second switch T2 and auxiliary electrode AE.In the second pixel P2, form one second liquid crystal capacitance between the second pixel electrode PE2 and the common electrode.The second pixel P2 also comprises one the 3rd storage capacitors Cst3 and one the 4th storage capacitors Cst4, and wherein the 3rd storage capacitors Cst3 is coupled to the 3rd switch T3, and the 4th storage capacitors Cst4 is coupled to the auxiliary electrode (not shown) of the 4th switch T4 and next pixel.The first storage capacitors Cst1, the second storage capacitors Cst2, the 3rd storage capacitors Cst3 and the 4th storage capacitors Cst4 can couple common electrode CE, or are coupled to the grid of neighbor.In this voltage Vcom (see figure 4) explanation to couple common electrode CE and to receive common electrode.When driving pixel, the second storage capacitors Cst2 and the 4th storage capacitors Cst4 have the effect that continues to provide auxiliary electrode AE and another auxiliary electrode (not shown) voltage.But on practice, also can save the second storage capacitors Cst2 and the 4th storage capacitors Cst4, as shown in Figure 3.
The auxiliary electrode AE that uses as for orientation, though present embodiment is the auxiliary electrode AE explanation with strip, but the shape of auxiliary electrode AE also can be other shape, for example around the annular auxiliary electrode of pixel electrode, needs only auxiliary electrode AE is disposed at neighborhood pixels electrode part.When making the first pixel electrode PE1 and the second pixel electrode PE2, can produce the auxiliary electrode AE that is surrounded on the second pixel electrode PE2 simultaneously, again auxiliary electrode AE is electrically connected with the second switch T2 of the first pixel P1.Or when utilize making the metal level of control end (grid), input end (source electrode) and output terminal (drain electrode), produce simultaneously and be surrounded on second pixel electrode PE2 auxiliary electrode AE on every side, and auxiliary electrode AE is electrically connected with the second switch T2 of the first pixel P1.
When driving, by a counter-rotating (dot inversion) or line counter-rotating each row pixels of mode activation such as (line inversion), make the first pixel electrode PE1 and the second pixel electrode PE2 receive the pixel voltage of opposed polarity respectively, and can receive identical pixel voltage with the first pixel electrode PE with auxiliary electrode AE that second switch T2 couples.Because auxiliary electrode AE is positioned at the adjacent side of the second pixel electrode PE2, utilize the different fringing fields that produce of polarity (fringefield) effect of the second pixel electrode PE2 and auxiliary electrode AE, make Electric Field Distribution produce distortion (distortion) to control swinging to of liquid crystal, the second pixel P2 just has a plurality of display fields.
Please refer to Fig. 4, it shows when the voltage that opposed polarity is provided during to the auxiliary electrode and second pixel electrode, the distribution plan of the electric field that is produced.As shown in Figure 4, this figure is that example is done explanation with the both sides that auxiliary electrode AE is arranged at the second pixel electrode PE2.Because auxiliary electrode AE receives the pixel voltage of the first pixel P1, the polarity of auxiliary electrode AE and the second pixel electrode PE2 is different and have a fringing field effect.Liquid crystal molecule LC is subjected to the meeting that influences of electric field distorting to be toppled over to pixel center.So, display panels 210 will have the effect of wide angle of two display fields at least.If the auxiliary electrode AE cyclic ligand that will be electrically connected with the first pixel P1 places the second pixel electrode PE2 all around, the drive signal of collocation point counter-rotating or line counter-rotating, the polarity that makes auxiliary electrode AE and the second pixel electrode PE2 is different and produce fringing field effect, liquid crystal molecule LC is subjected to the influence of electric field distorting just can be toppled over toward pixel center by four direction, makes display panels 210 have the effect of wide angle of four display fields.
Can produce the effect of an auxiliary electrode coupling capacitance between the auxiliary electrode AE and the second pixel electrode PE2.When the pixel voltage of the second pixel electrode PE2 changes, can have influence on the voltage of auxiliary electrode AE because of capacitance coupling effect.Because auxiliary electrode AE is directly connected to the pixel electrode PE1 in order to show among the first pixel P1, therefore the pixel voltage as the second pixel P2 changes, and when making the voltage of auxiliary electrode AE change thereupon, because second switch T2 closes, so the voltage of auxiliary electrode AE changes the pixel voltage of the first pixel electrode PE1 that can't have influence on the first pixel P1.That is to say, can be because of the capacitance coupling effect of the second pixel P2, and make the first pixel P1 produce the problem of grayscale voltage skew.Thus, just can prevent to cause the phenomenon of picture distortion because of the grayscale voltage skew.
Aforesaid second switch T2 is directly to be connected with data line DL with the 4th switch T4, but in fact second switch T2 and the 4th switch T4 also can be coupled to data line DL by the first switch T1 and the 3rd switch T3.
Please refer to Fig. 5,6, Fig. 5 shows second (four) switch and is coupled to the equivalent circuit diagram of data line by first (three) switch, and Fig. 6 shows the equivalent circuit diagram of the dot structure clipped storage capacitors of Fig. 5.As shown in Figure 5, second input end of second switch T2 is coupled to data line DL by the first switch T1, and the four-input terminal of the 4th switch T4 then is to be coupled to data line DL by the 3rd switch T3.In addition, as shown in Figure 6, also can save the second storage capacitors Cst2 and the 4th storage capacitors Cst4.
Vice versa, and the first switch T1 and the 3rd switch T3 also can be coupled to data line DL by second switch T2 and the 4th switch T4.Please refer to Fig. 7,8, Fig. 7 shows first (three) switch and is coupled to the equivalent circuit diagram of data line by second (four) switch, and Fig. 8 shows the equivalent circuit diagram of the dot structure clipped storage capacitors of Fig. 7.As shown in Figure 7, the first input end of the first switch T1 is coupled to data line DL by second switch T2, and the 3rd input end of the 3rd switch T3 then is to be coupled to data line DL by the 4th switch T4.In addition, as shown in Figure 8, also can save the second storage capacitors Cst2 and the 4th storage capacitors Cst4.
Embodiment two
The difference of present embodiment and embodiment one is, embodiment one is to be example with vertical two adjacent pixels, and present embodiment then is to be example with horizontal two adjacent pixels, is to indicate identical label with identical circuit unit.
Please refer to Fig. 9,10, Fig. 9 shows the equivalent circuit diagram of the dot structure of the embodiment of the invention two, and Figure 10 shows the equivalent circuit diagram of the dot structure clipped storage capacitors of Fig. 9.As shown in Figure 9, the first pixel P1 comprises one first pixel electrode PE1, one first switch T1 and a second switch T2.Wherein the first input end of the first switch T1 is coupled to the first data line DL1, and the first controlled end of the first switch T1 is coupled to sweep trace SL, and first output terminal of the first switch T1 is coupled to the first pixel electrode PE1.Second input end of second switch T2 is coupled to the first data line DL1, and the second controlled end of second switch T2 is coupled to sweep trace SL.
The second pixel P2 comprises one second pixel electrode PE2, one the 3rd switch T3 and one the 4th switch T4.Wherein the 3rd input end of the 3rd switch T3 is coupled to the second data line DL2, and the 3rd controlled end of the 3rd switch T3 is coupled to sweep trace SL, and the 3rd output terminal of the 3rd switch T3 is coupled to the second pixel electrode PE2.Auxiliary electrode AE is coupled to second output terminal of second switch T2, auxiliary electrode AE and adjacent to the second pixel electrode PE2.The 4th its four-input terminal of switch T4 of the second pixel P2 is coupled to the second data line DL2, the 4th controlled end of the 4th switch T4 is coupled to sweep trace SL, and the 4th output terminal of the 4th switch T4 then is coupled to the auxiliary electrode (not shown) in the next laterally neighbor.
First liquid crystal capacitance that forms between first pixel electrode PE1 among the first pixel P1 and the common electrode (not shown), first liquid crystal capacitance and the first storage capacitors Cst1 are in order to display pixel.Second liquid crystal capacitance that forms between second pixel electrode PE2 among the second pixel P2 and the common electrode, this second liquid crystal capacitance and the 3rd storage capacitors Cst3 also are in order to display pixel.When driving pixel, the second storage capacitors Cst2 and the 4th storage capacitors Cst4 then have the effect that auxiliary electrode AE and another auxiliary electrode (not shown) voltage stabilizing are provided.But on practice, also can save the second storage capacitors Cst2 and the 4th storage capacitors Cst4, as shown in figure 10.
During driving, can make the first pixel electrode PE1 and the second pixel electrode PE2 receive the pixel voltage of opposed polarity respectively by each row pixels of mode activation such as some counter-rotating or line counter-rotatings equally.Owing to can receive identical pixel voltage with the auxiliary electrode AE that second switch T2 couples, and auxiliary electrode AE is positioned at the adjacent side of the second pixel electrode PE2 with the first pixel electrode PE1.Thus, utilize the different fringing field effects that produce of polarity of the second pixel electrode PE2 and auxiliary electrode AE, make Electric Field Distribution produce distortion with the swinging to of control liquid crystal molecule, the second pixel P2 just has a plurality of display fields.
Can produce the effect of an auxiliary electrode coupling capacitance between the auxiliary electrode AE and the second pixel electrode PE2.When the pixel voltage of the second pixel electrode PE2 changes, can be because of capacitance coupling effect, and have influence on the voltage of auxiliary electrode AE.Because auxiliary electrode AE is not the first pixel electrode PE1 that is directly connected to the first pixel P1, therefore the pixel voltage as the second pixel P2 changes, and when making the voltage of auxiliary electrode AE change thereupon, because second switch T2 closes, so the voltage of auxiliary electrode AE changes the pixel voltage of the first pixel electrode PE1 that can't directly have influence on the first pixel P1.That is to say, can not make the first pixel P1 produce the problem of grayscale voltage skew because of the capacitance coupling effect of the second pixel P2.
Aforesaid second switch T2 is directly to be connected with the first data line DL1 and the second data line DL2 with the 4th switch T4, but in fact second switch T2 and the 4th switch T4 also can be coupled to the first data line DL1 and the second data line DL2 by the first switch T1 and the 3rd switch T3.Otherwise the first switch T1 and the 3rd switch T3 also can be coupled to the first data line DL1 and the second data line DL2 by second switch T2 and the 4th switch T4.In addition, in these dot structures, can save the second storage capacitors Cst2 and the 4th storage capacitors Cst4.
Display panels and the liquid crystal indicator of using it that the above embodiment of the present invention is disclosed, the auxiliary electrode that one orientation is used is set in each pixel, the configuration of this auxiliary electrode neighborhood pixels electrode for example is looped around pixel electrode or only is arranged at a side of pixel electrode.Auxiliary electrode is coupled to a switch in this neighborhood pixels.When driving each pixel, auxiliary electrode in each pixel and pixel electrode can form the boundary field effect and swing to the control liquid crystal.And because auxiliary electrode directly is not electrically connected with the pixel electrode of neighborhood pixels, and be separated by with the pixel electrode of a switch and neighborhood pixels at least, so, the capacitance coupling effect that can avoid producing between auxiliary electrode and the pixel electrode has influence on the pixel voltage of neighbor, to avoid the problem of traditional gray-scale deviation.
In sum, though the present invention discloses as above with preferred embodiment, it is not in order to limit the present invention.Those skilled in the art, under the premise without departing from the spirit and scope of the present invention, when doing some changes and modification.Therefore, protection scope of the present invention should be as the criterion with the application's claim.