CN101364021B - LCD device and drive method thereof - Google Patents
LCD device and drive method thereof Download PDFInfo
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Abstract
The invention discloses an LCD (liquid crystal display) including scan lines, data lines arranged across the scan lines, and pixel electrodes and transistors arranged in pixel areas formed by mutual cross of the scan lines and the data lines. The pixel electrode in each pixel area includes a first sub-pixel electrode and a second sub-pixel electrode, and the transistor in each pixel area includes a first transistor connected with the first sub-pixel electrode and a second transistor connected with the second sub-pixel electrode, wherein the grid electrodes of the first transistor and the second transistor are respectively and electrically connected with two adjacent scan lines, and the active electrodes respectively and electrically connected with the same data line. The invention further discloses a corresponding method for driving the LCD. The common voltage Vcom can be conveniently adjusted, and the ghost problem in the prior LCD can be improved by adopting the LCD and the driving method thereof.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly, relate to the driving method of a kind of liquid crystal indicator and liquid crystal indicator.
Background technology
Advantages such as liquid crystal indicator (LCD, Liquid Crystal Display) has gently, approaches, low power consumption are widely used in modernized information equipments such as computing machine, mobile phone and personal digital assistant.At present, market for the performance requirement of liquid crystal indicator is: characteristics such as high-contrast, high brightness, high color saturation, rapid reaction and wide viewing angle.
In order to realize wide viewing angle, also developed multiple different display device in the prior art, as: stable twisted nematic liquid crystal indicator (TN) adds view film (wide viewing film), copline suitching type (In-plane switching, IPS) liquid crystal indicator, marginal electric field suitching type (FringeField Switching, FFS) liquid crystal indicator and multidomain vertical alignment type (Multi-domainVertical Alignment, MVA) liquid crystal indicator etc.
In order to reach better display effect, existing liquid crystal indicator is a plurality of sub-pixels with a pixel segmentation often, utilizes on-off element to control each sub-pixel respectively, to realize more excellent display effect.
Be example with multidomain vertical alignment type liquid crystal indicator (MVA-LCD) below, the structure of existing LCD display device is carried out brief introduction.
Fig. 1 is a kind of diagrammatic cross-section of existing multidomain vertical alignment type liquid crystal indicator, as shown in Figure 1, MVA-LCD comprises first substrate 102, be positioned at black matrix" (black matrix) 104 and colored filter (color filter) 106 on first substrate 102, be used to cover first insulation course 108 of black matrix" 104 and colored filter 106, be formed at the common electrode 110 on first insulation course 108, and be covered in the vertical orientation film 112 on this common electrode 110.
MVA-LCD also comprises second substrate 122, be positioned at the sweep trace (unmarked) on second substrate 122 and common electrode 110 facing surfaces, comprise sweep trace SL (m) 141 and sweep trace SL (m+1) 142 in this diagram, be used to cover second insulation course 120 of this sweep trace, be positioned on second insulation course 120, the 3rd insulation course 118 that is used for cover data line DL (n) (not shown), be positioned at the first pixel electrode SP1 (m on the 3rd insulation course 118, n) 143, the second pixel electrode SP2 (m, n) 144, and the vertical orientation film 116 that covers pixel electrode.Notice that (m, n) (m n) utilized slit 124 to realize the electricity isolation between 144, and the two realizes control by different on-off elements respectively to the 143 and second pixel electrode SP2 to the first pixel electrode SP1.
In addition, as shown in fig. 1, also have orientation slit 130 and orientation protrusion 131 in this device.MVA-LCD makes liquid crystal molecule be multi-direction arrangement by this orientation slit 130 or orientation protrusion 131 are set on colored optical filtering substrates or thin-film transistor array base-plate, obtains a plurality of different orientation territories (Domain), thereby realizes that wide viewing angle shows.
Particularly, liquid crystal 126 is sealed between first substrate 102 and second substrate 122.As the first pixel electrode SP1 (m, n) the 143 and second pixel electrode SP2 (m, when n) not applying voltage between 144, except that the part liquid crystal 126 near orientation slit 130 and orientation protrusion 131 places, all the other liquid crystal 126 can be arranged with the direction perpendicular to first substrate 102 and second substrate 122.As the first pixel electrode SP1 (m, n) the 143 and second pixel electrode SP2 (m, when n) applying voltage between 144, then can between two electrodes, form fringe field, make liquid crystal 126 be inclined to two kinds of different directions, formation has the display field of opposite visual characteristic, has obtained having the MVA-LCD of wide viewing angle.
In the prior art, (m, n) (m n) can apply opposite polarity voltage by different data lines between 144 to the 143 and second pixel electrode SP2 at the first pixel electrode SP1.This polarity is for the common electric voltage Vcom that is applied on the common electrode 110, and definition is defined as positive polarity voltage greater than the voltage of common electric voltage Vcom, is defined as reverse voltage less than the voltage of common electric voltage Vcom.
Because the GTG value (gray level) of liquid crystal display is to be determined by the voltage difference between the common electric voltage Vcom that is applied on pixel voltage and the common electrode 110, when the voltage difference between the voltage difference between positive polarity voltage and the common electric voltage Vcom and reverse voltage and the common electric voltage Vcom equates substantially, demonstrate identical GTG value.
At present LCD all adopts the reversal of poles type of drive, and the voltage signal that is added on the liquid crystal pixel carries out reversal between adjacent two frames (frame) picture, and under the constant situation of front and back two frame picture GTGs, keeps same pressure reduction absolute value.
Fig. 2 is the type of drive synoptic diagram of single pixel under the normal condition, as shown in Figure 2, in the different frame picture, in order to eliminate the aging action that the direct current effect produces liquid crystal material, eliminate the problem of ghost (image sticking), need exchange driving with opposite polarity voltage.Vcom is a common electric voltage among the figure, shown in pixel electrode voltage among the figure 201, drives with positive polarity voltage when the n frame, and the difference between pixel voltage and the common electric voltage is Vp (+); When the n+1 frame, utilize reverse voltage to drive, the difference between pixel voltage and the common electric voltage is Vp (-) at this moment.Under the normal condition, | Vp (+) |=| Vp (-) |, can show same GTG, can not produce scintillation.
But because the difference of raw material and state of arts, the pressure reduction absolute value of the positive and negative semiperiod of liquid crystal panel of producing is often also unequal, like this, the problem of ghost can occur after long-term lighting, has a strong impact on product quality.
Fig. 3 is the type of drive synoptic diagram of single pixel under the abnormal conditions, and as shown in Figure 3, common electric voltage Vcom ' occurs unusual, and it is more higher than design load.This makes the difference Vp (+) ' of the positive polarity voltage of pixel electrode voltage 301 and common electric voltage less than predetermined value Vp (+), the difference Vp (-) ' of reverse voltage and common electric voltage has occurred again greater than predetermined value Vp (-) | Vp (+) ' |＜| Vp (-) ' | situation.When the positive polarity voltage of the same GTG of input demonstration this moment and reverse voltage, can not demonstrate identical GTG, show as liquid crystal display and flicker occurs.
For avoiding this problem, before liquid crystal indicator dispatches from the factory, need adjust public voltage signal, make display panel keep the balance of driving voltage in the positive and negative semiperiod.This adjustment is normally carried out according to above-mentioned scintillation: when the Voltage unbalance of panel in the positive and negative cycle, can produce flicker (flicker), the intensity of this flicker is to judge the foundation of driven equilibrium degree of positive and negative semiperiod of panel, adjusting Vcom reduces to minimum until flicker, corresponding Vcom is best the setting.
Yet, in the structure that each pixel as shown in Figure 1 is made up of two opposite polarity sub-pixels, in fact be difficult to detect flicker, be difficult to that public voltage signal is carried out optimization and set, panel also just is easy to produce the ghost problem.In addition, when two adjacent sub-pixel polarity are opposite, can produce a stronger transverse electric field near the slit between them, its intensity surpasses vertical electric field, can make liquid crystal herein correctly not arrange.
Summary of the invention
The invention provides the driving method of a kind of liquid crystal indicator and liquid crystal indicator,, improve the ghost problem in the available liquid crystal display device so that adjust common electric voltage Vcom.
For achieving the above object, a kind of liquid crystal indicator provided by the invention comprises sweep trace; Data line with described sweep trace cross arrangement; Be arranged at interior pixel electrode and the transistor of pixel region that described sweep trace and described data line intersect to form mutually, and the pixel electrode in each pixel region comprises first pixel electrode and second pixel electrode, transistor in each pixel region comprises the first transistor that links to each other with described first pixel electrode, and the transistor seconds that links to each other with described second pixel electrode; Wherein, the grid of described the first transistor and transistor seconds is electrically connected to two adjacent sweep traces respectively, and source electrode is electrically connected to identical data line respectively.
Wherein, in delegation, two interior transistorized source electrodes of adjacent pixel regions electrically connect opposite polarity data line respectively.
Perhaps, in the same row, two interior transistorized source electrodes of adjacent pixel regions electrically connect opposite polarity data line respectively.
In addition, can also make the transistorized source electrode in any two adjacent pixel region be electrically connected to opposite polarity data line.
The present invention has the driving method of a kind of liquid crystal indicator of identical or relevant art feature, comprising:
Utilize sweep trace and data line to intersect to form the array of pixel region mutually;
First pixel electrode and second pixel electrode are set in each described pixel region;
The first transistor and transistor seconds are set in each described pixel region control described first pixel electrode and second pixel electrode respectively;
Utilize the first transistor and second crystal in two adjacent transmit scan line sweep signal control corresponding row pixel regions to open or close respectively;
Utilize first pixel electrode and second pixel electrode of the identical data line data signal of polarity to each pixel region.
Similarly, can utilize opposite polarity data line data signal to any two adjacent pixel region respectively.
Compared with prior art, the present invention has the following advantages:
The driving method of liquid crystal indicator of the present invention and liquid crystal indicator, two sub-pixels in the same pixel region are electrically connected to identical data line, make in same frame picture, difference between two sub-pixel voltages and the common electric voltage can not form complementation, help the detection of scintillation, conveniently common electric voltage is adjusted, eliminated the ghost problem of liquid crystal indicator.Simultaneously because adjacent two sub-pixel polarity are identical, therefore the transverse electric field at slit place a little less than, so liquid crystal arrangement still depends on vertical electric field, helps the normal demonstration of the liquid crystal at this place.
The method of liquid crystal indicator of the present invention and driving liquid crystal indicator also is electrically connected to opposite polarity data line with any two adjacent pixel region, has realized the type of drive of some counter-rotating, has further improved the expressive ability of image quality.
Description of drawings
Fig. 1 is a kind of diagrammatic cross-section of existing multidomain vertical alignment type liquid crystal indicator;
Fig. 2 is the type of drive synoptic diagram of single pixel under the normal condition;
Fig. 3 is the type of drive synoptic diagram of single pixel under the abnormal conditions;
Fig. 4 is the synoptic diagram of existing multidomain vertical alignment type liquid crystal indicator;
Fig. 5 is the synoptic diagram of the liquid crystal indicator in the first embodiment of the invention;
Fig. 6 is the synoptic diagram of the liquid crystal indicator in the second embodiment of the invention;
Fig. 7 is the driving method process flow diagram of the liquid crystal indicator of third embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.Certainly the present invention is not limited to this specific embodiment, and the known general replacement of one of ordinary skilled in the art is encompassed in protection scope of the present invention far and away.
Secondly, the present invention utilizes synoptic diagram to describe in detail, when the embodiment of the invention is described in detail in detail, for convenience of explanation, the synoptic diagram of expression structure can be disobeyed general ratio and be done local the amplification, should be with this as limitation of the invention, in addition, in the making of reality, should comprise the three dimensions size of length, width and the degree of depth.
Solve the problem of ghost in the available liquid crystal display device, just need and to adjust common electric voltage Vcom by detecting flicker.
Fig. 4 is the synoptic diagram of existing multidomain vertical alignment type liquid crystal indicator, in order clearly to describe this structure, has omitted colored filter substrate among the figure.As shown in Figure 4, this liquid crystal indicator comprises sweep trace 410 (comprising the Gn shown in the figure, Gn+1, Gn+2, Gn+3); Data line 420 (comprising the Dn shown in the figure, Dn+1, Dn+2, Dn+3, Dn+4, Dn+5) with described sweep trace cross arrangement; Be arranged at pixel electrode and transistor 403 in the pixel region 400 that described sweep trace 410 and described data line 420 intersect to form mutually, 404, and the pixel electrode in each pixel region comprises first pixel electrode 401 (SP1) and second pixel electrode 402 (SP2) of electricity isolation to each other, transistor in each pixel region comprises and linking to each other with described first pixel electrode 401, be used to control the first transistor 403 (T1) of this first pixel electrode 401, and link to each other with described second pixel electrode 402, be used to control this second pixel electrode, 402 transistor secondses 404 (T2).
Wherein, the grid of the first transistor 403 and transistor seconds 404 is electrically connected to different sweep traces respectively, is controlled its unlatching or is closed by the sweep signal that transmits on the sweep trace; Source electrode is electrically connected to the different data line of polarity respectively, so that the signal on the respective data lines is sent to the sub-pixel of correspondence when it is opened.
With the pixel region 400 that is positioned at the capable n of n row among Fig. 4 is example, and its first pixel electrode 401 is by the first transistor 403 controls, and the grid of this first transistor 403 electrically is electrically connected to sweep trace Gn+1, and source electrode electrically is electrically connected to data line Dn; Second pixel electrode 402 is by transistor seconds 404 controls, and the grid of this transistor seconds 404 is electrically connected to sweep trace Gn, and source electrode is electrically connected to data line Dn+1.
In addition, what import respectively on data line Dn and the Dn+1 is opposite polarity data-signal, and this opposite polarity data-signal inputs to first pixel electrode 401 and second pixel electrode 402 by the first transistor 403 and transistor seconds 404 respectively again, to drive whole pixel.
Can see in conjunction with Fig. 3 and Fig. 4, for the existing liquid crystal indicator shown in Fig. 4, because the polarity between two sub-pixels of the same pixel of composition is opposite, when the common electric voltage value is higher or on the low side, in any frame picture, always the difference of the voltage of a sub-pixel and common electric voltage is less than predetermined value, and the voltage of another sub-pixel and the difference of common electric voltage have formed complementation greater than predetermined value between two sub-pixels.This just causes visually being difficult to observing flicker when the different frame picture switches, and also just is difficult to public voltage signal is adjusted, and also just can't correctly show each GTG when showing.
For this reason, the present invention proposes a kind of new liquid crystal indicator, it is electrically connected to the identical data line of polarity with first sub-pixel in the same pixel region and second sub-pixel.Because two sub-pixel polarity in this structure in the same pixel are identical, in case common electric voltage has taken place to depart from, can when the different frame picture switches, detect flicker easily, also just can adjust public voltage signal in view of the above, avoid the appearance of the problems referred to above.Simultaneously,,, therefore can realize an inversion driving, obviously improve image quality because the transistorized source electrode in any two adjacent pixel region is electrically connected to opposite polarity data line among the present invention according to the present invention.
First embodiment:
Fig. 5 is the synoptic diagram of the liquid crystal indicator in the first embodiment of the invention, and as shown in Figure 5, the liquid crystal indicator in the present embodiment comprises sweep trace 510 (Gn as shown in FIG., Gn+1, Gn+2, Gn+3); Data line 520 (Dn as shown in FIG., Dn+1, Dn+2, Dn+3, Dn+4, Dn+5) with described sweep trace 510 cross arrangements; Be arranged at pixel electrode and transistor in the pixel region 500 that described sweep trace 510 and described data line 520 intersect to form mutually, and the pixel electrode in each pixel region 500 comprises first pixel electrode 501 and second pixel electrode 502, transistor in each pixel region comprises the first transistor 503 that links to each other with described first pixel electrode 501, and the transistor seconds 504 that links to each other with described second pixel electrode 502.
In the present embodiment, each row pixel region drives by two data lines, and the grid of pairing the first transistor 503 of each pixel and transistor seconds 504 is electrically connected to two adjacent sweep traces respectively, and source electrode is electrically connected to identical data line respectively.
With the pixel region 500 that is positioned at the capable n of n row among Fig. 5 is example, and it is driven by the data line Dn that is positioned at its left side, and its first sub-pixel 501 is by the first transistor 503 controls, and second sub-pixel 502 is by transistor seconds 504 controls.The grid of this first transistor 503 is electrically connected to sweep trace Gn+1, and source electrode is electrically connected to data line Dn, and the grid of transistor seconds 504 is electrically connected to adjacent sweep trace Gn, and source electrode then is electrically connected to data line Dn equally.
At this moment, because the first transistor 503 in this pixel region 500 and the source electrode of transistor seconds 504 all are electrically connected to same data line Dn, that is, the voltage signal on first sub-pixel 501 and second sub-pixel 502 is all from data line Dn.In same frame, first sub-pixel 501 in the same pixel is identical with the polarity of voltage of second sub-pixel 502, two sub-pixels in the same pixel can not appear again because of the polarity situation of GTG complementation on the contrary mutually, like this, in case common electric voltage Vcom departs from, occurs to show that the flicker problem just can detect easily, also just can eliminate by adjustment common electric voltage Vcom easily and glimmer.
In addition, in the present embodiment, as shown in Figure 5, the data line polarity that the transistorized source electrode in any two adjacent pixel region 500 is electrically connected to is opposite.
In the present embodiment, any two adjacent polarity that data line applied are opposite.That is, the polarity of described data line is to change in the cycle with single.Wherein, adjacent data line comprises and is positioned at the adjacent data lines in same pixel region both sides (as Dn and Dn+1), and the adjacent data line (as Dn+1 and Dn+2) that is positioned at two pixel region intersections.
At this moment, the transistorized source electrode in above-mentioned any two adjacent pixel region electrically connects opposite polarity data line, specifically can comprise:
A, with in the delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected;
With any one pixel in each row, be electrically connected to of two data lines of its place pixel region of formation that is arranged in the pixel both sides selectively, opposite to be implemented in the data line polarity that any two adjacent pixels electrically connect in each row, and then guarantee that the polarity of this pixel in same frame is opposite with the polarity of neighbor.
With the pixel that n is capable among Fig. 5 is example, and n row pixel is electrically connected to the data line Dn that is positioned at its left side, supposes that in a frame this data line Dn is a positive polarity.Because of the polarity of data line in the present embodiment is to change in the cycle with single, as can be known: adjacent with Dn, the data line Dn+1 that is positioned at n row pixel right side is a negative polarity, the data line Dn+2 that is positioned at the pixel left side of n+1 row is a positive polarity, the data line Dn+3 on right side is a negative polarity, the data line Dn+4 that is positioned at the pixel left side of n+2 row is a positive polarity, and the data line Dn+5 on right side is a negative polarity, and the polarity of remainder data line can the rest may be inferred.
At this moment, it is opposite to be implemented in the data line polarity that any two adjacent pixels electrically connect in each row, n+1 pixel in this n is capable should be connected with the data line Dn+3 with negative polarity on right side in its both sides data line, n+2 pixel in this n is capable should be connected with the data line Dn+4 with positive polarity in left side in its both sides data line, and the connected mode of all the other each pixels can the rest may be inferred.Final connected mode is: the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
In B, the same row, the transistorized source electrode in the adjacent described pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
Concrete, in each row pixel, the transistorized source electrode that is arranged in the pixel region 500 of odd-numbered line and even number line is electrically connected to opposite polarity data line (that is same row pixel, the transistorized source electrodes in any two adjacent pixel region 500 are electrically connected to opposite polarity data line) respectively.
With the pixel region that is arranged in n row among Fig. 5 is example: n row pixel region, n, n+2... the source electrode of the transistor in the pixel region of (2n) row (odd-numbered line) (comprising the first transistor 503 and transistor seconds 504) is electrically connected to data line Dn, and n+1, the source electrode of the transistor in the pixel region of n+3... (2n+1) row (even number line) (comprising the first transistor 503 and transistor seconds 504) is electrically connected to the adjacent data line Dn+1 with opposite polarity.Because two data lines of this row pixel region correspondence can apply opposite polarity data-signal in same frame, can make the odd-numbered line in this row pixel region realize that with the pixel of even number line polarity is opposite.
Therefore, according to the liquid crystal indicator that the present embodiment aforesaid way is provided with, the pixel of any two adjacent (comprising neighbouring adjacent with the left and right sides) all is connected the data line of opposite polarity, that is, the polarity of any two neighbors is opposite.Realize the some inversion driving, further improved the expressive ability of image quality.
In other embodiments of the invention, also can unfavorablely use above-mentioned connected mode, and adopt other connected mode to realize row counter-rotating or row counter-rotating.As being connected to capable inversion mode: in delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected; And in the same row, the transistorized source electrode in the adjacent described pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
Or be connected to the row inversion mode: in delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected; And in the same row, the transistorized source electrode in the adjacent described pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected.For those of ordinary skills, under the inspiration of the above embodiment of the present invention, can release the concrete connected mode of this row counter-rotating or row counter-rotating, do not repeat them here.
In the present embodiment, described liquid crystal indicator is the multidomain vertical alignment type liquid crystal indicator, is formed with a plurality of slits or protrusion on its first pixel electrode and second pixel electrode.In other embodiments of the invention, can also be other liquid crystal indicator, as long as its each pixel has two sub-pixels and can be suitable for.
Second embodiment:
Fig. 6 is the synoptic diagram of the liquid crystal indicator in the second embodiment of the invention, and as shown in Figure 6, the liquid crystal indicator in the present embodiment comprises sweep trace 610 (comprising the Gn shown in the figure, Gn+1, Gn+2, Gn+3); Data line 620 (comprising the Dn shown in the figure, Dn+1, Dn+2, Dn+3, Dn+4, Dn+5) with described sweep trace 610 cross arrangements; Be arranged at pixel electrode and transistor in the pixel region 600 that described sweep trace 610 and described data line 620 intersect to form mutually, and the pixel electrode in each pixel region 600 comprises first pixel electrode 601 and second pixel electrode 602, transistor in each pixel region comprises the first transistor 603 that links to each other with described first pixel electrode 601, and the transistor seconds 604 that links to each other with described second pixel electrode 602.
In the present embodiment, each row pixel region drives by two data lines, and the grid of described the first transistor 603 and transistor seconds 604 is electrically connected to two adjacent sweep traces respectively, and source electrode is electrically connected to the identical data line of polarity respectively.
With the pixel region 600 that is positioned at the capable n of n row among Fig. 6 is example, and it is driven by the data line Dn that is positioned at its both sides, and its first sub-pixel 601 is by the first transistor 603 controls, and second sub-pixel 602 is by transistor seconds 604 controls.The grid of this first transistor 603 is electrically connected to sweep trace Gn+1, and source electrode is electrically connected to data line Dn, and the grid of transistor seconds 604 is electrically connected to adjacent sweep trace Gn, and source electrode then is electrically connected to data line Dn equally.
At this moment, because the first transistor 603 in this pixel region 600 and the source electrode of transistor seconds 604 all are electrically connected to same data line Dn, that is, the voltage signal on first sub-pixel 601 and second sub-pixel 602 is all from data line Dn.In same frame, first sub-pixel 601 in the same pixel is identical with the polarity of voltage of second sub-pixel 602, two sub-pixels in the same pixel can not appear again because of the polarity situation of GTG complementation on the contrary mutually, like this, when departing from appears in common electric voltage Vcom, just can detect easily when causing showing flicker, also just can eliminate by adjustment common electric voltage Vcom easily and glimmer.
In the present embodiment, as shown in Figure 6, the data line polarity that the transistorized source electrode in any two adjacent pixel region 600 electrically connects is opposite.
In the present embodiment, the polarity of data line is to change in the cycle with two, and it is opposite to form two data lines polarity of same pixel region.
At this moment, the transistorized source electrode in above-mentioned any two adjacent pixel region electrically connects opposite polarity data line, specifically can comprise:
A, with in the delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected;
With any one pixel in each row, be electrically connected to of two data lines of its place pixel region of formation that is arranged in the pixel both sides selectively, opposite to be implemented in the data line polarity that any two adjacent pixels electrically connect in each row, and then guarantee that the polarity of this pixel in same frame is opposite with the polarity of neighbor.
With the pixel that n is capable among Fig. 6 is example, and n row pixel is electrically connected to the data line Dn that is positioned at its left side, supposes that in a frame this data line Dn is a positive polarity.Because of the polarity of data line in the present embodiment is to change in the cycle with two, and the data line polarity of each pixel region both sides is opposite.Adjacent with Dn, the data line Dn+1 that is positioned at n row pixel right side is a negative polarity, the data line Dn+2 that is positioned at the pixel left side of n+1 row also is negative polarity, the data line Dn+3 on right side is a positive polarity, the data line Dn+4 that is positioned at the pixel left side of n+2 row is a positive polarity, the data line Dn+5 on right side is a negative polarity, and the polarity of remainder data line can the rest may be inferred.
At this moment, it is opposite to be implemented in the data line polarity that any two adjacent pixels electrically connect in each row, n+1 pixel in this n is capable should be connected with the data line Dn+2 with negative polarity in left side in its both sides data line, n+2 pixel in this n is capable should be connected with the data line Dn+4 with positive polarity in left side in its both sides data line, and the connected mode of all the other each pixels can the rest may be inferred.Final connected mode is: the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected.
In B, the same row, the transistorized source electrode in the adjacent described pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
Concrete, in each row pixel, the transistorized source electrode that is arranged in the pixel region 600 of odd-numbered line and even number line is electrically connected to opposite polarity data line (that is same row pixel, the transistorized source electrodes in any two adjacent pixel region 600 are electrically connected to opposite polarity data line) respectively.
With the pixel region that is arranged in n row among Fig. 6 is example: n row pixel region, n, n+2... the source electrode of the transistor in the pixel region of (2n) row (odd-numbered line) (comprising the first transistor 603 and transistor seconds 604) is electrically connected to data line Dn, and n+1, the source electrode of the transistor in the pixel region of n+3... (2n+1) row (even number line) (comprising the first transistor 503 and transistor seconds 504) is electrically connected to the adjacent data line Dn+1 with opposite polarity.Because two data lines of this row pixel region correspondence can apply opposite polarity data-signal in same frame, can make the odd-numbered line in this row pixel region realize that with the pixel of even number line polarity is opposite.
Therefore, according to the liquid crystal indicator that the mode of present embodiment is provided with, the pixel of any two adjacent (comprising neighbouring adjacent with the left and right sides) all is connected the data line of opposite polarity, that is, the polarity of any two neighbors is opposite.Realize the some inversion driving, further improved the expressive ability of image quality.
In other embodiments of the invention, also can unfavorablely use above-mentioned connected mode, and adopt other connected mode to realize row counter-rotating or row counter-rotating.As being connected to capable inversion mode: in delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected; And in the same row, the transistorized source electrode in the adjacent described pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
Or be connected to the row inversion mode: in delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected; And in the same row, the transistorized source electrode in the adjacent described pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected.For those of ordinary skills, under the inspiration of the above embodiment of the present invention, can release the concrete connected mode of this row counter-rotating or row counter-rotating, do not repeat them here.
In the present embodiment, described liquid crystal indicator is the multidomain vertical alignment type liquid crystal indicator, is formed with a plurality of slits or protrusion on its first pixel electrode and second pixel electrode.In other embodiments of the invention, can also be other liquid crystal indicator, as long as its each pixel has two sub-pixels and can be suitable for.
The 3rd embodiment:
Present embodiment provides a kind of driving method of liquid crystal display dress, and Fig. 7 is the driving method process flow diagram of the liquid crystal indicator of third embodiment of the invention, below in conjunction with Fig. 7 the third embodiment of the present invention is elaborated.
The driving method of liquid crystal indicator in the present embodiment comprises step:
Step 701: utilize sweep trace and data line to intersect to form the array of pixel region mutually;
Step 702: first pixel electrode and second pixel electrode are set in each described pixel region;
Step 703: the first transistor and transistor seconds are set in each described pixel region control described first pixel electrode and second pixel electrode respectively;
Step 704: utilize the first transistor and second crystal in two adjacent transmit scan line sweep signal control corresponding row pixel regions to open or close (can make at this moment, the grid of described the first transistor and transistor seconds be electrically connected to two adjacent sweep traces respectively) respectively;
Step 705: utilize first pixel electrode and second pixel electrode (at this moment, can make the source electrode of described the first transistor and transistor seconds respectively be electrically connected to polarity identical data line) of the identical data line data signal of polarity to each pixel region.
Like this, in same frame, first sub-pixel in the same pixel is identical with the polarity of voltage of second sub-pixel, two sub-pixels in the same pixel can not appear again because of the polarity situation of GTG complementation on the contrary mutually, can detect demonstration flicker problem easily, also just can eliminate flicker by adjusting common electric voltage Vcom easily.
In addition, in the present embodiment, can also utilize opposite polarity data line data signal respectively,, further improve the expressive ability of image quality to realize the some inversion driving to any two adjacent pixel region.
During concrete operations, can utilize two data lines to drive each row pixel region respectively.Can have two kinds of situations this moment:
A, when the polarity of data line is when changing in the cycle with single, describedly utilize opposite polarity data line data signal respectively to any two adjacent pixel region, specifically comprise:
The data line data signal of utilizing opposition side respectively to in the delegation, adjacent pixel region;
The data line data signal of utilizing opposition side respectively to same row, adjacent pixel region.
B, when the polarity of described data line is to change in the cycle with two, and form two data lines polarity of same pixel region when opposite, utilize opposite polarity data line data signal to any two adjacent pixel region respectively, specifically comprise:
The data line data signal of utilizing same side respectively to in the delegation, adjacent pixel region;
The data line data signal of utilizing opposition side respectively to same row, adjacent pixel region.
Method in the present embodiment can be applied to the plurality of liquid crystals display device, can be suitable for this method as long as the single pixel in this device is formed by two sub-pixels.As can be applicable to the multidomain vertical alignment type liquid crystal indicator.
The above embodiment of the present invention is to realize that the some counter-rotating is shown as example and describes, for those of ordinary skills, can also utilize said apparatus of the present invention and method to realize row counter-rotating or row counter-rotating, its concrete implementation step is all similar with present embodiment to thinking, under the enlightenment of the embodiment of the invention, the extension of this application is easy to understand and realization for those of ordinary skills, does not repeat them here.
Driven by two data lines with each pixel region in the above embodiment of the present invention, for those of ordinary skills, under the inspiration of the above embodiment of the present invention, said apparatus of the present invention and method can also be applied to the situation that each pixel region is driven by single bus only, its concrete implementation step is all similar with present embodiment to thinking, under the enlightenment of the embodiment of the invention, the extension of this application is easy to understand and realization for those of ordinary skills, does not repeat them here.
Though the present invention with preferred embodiment openly as above; but it is not to be used for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (7)
1. liquid crystal indicator comprises:
Sweep trace;
Data line with described sweep trace cross arrangement;
Be arranged at interior pixel electrode and the transistor of pixel region that described sweep trace and described data line intersect to form mutually, and the pixel electrode in each pixel region comprises first pixel electrode and second pixel electrode, transistor in each pixel region comprises the first transistor that links to each other with described first pixel electrode, and the transistor seconds that links to each other with described second pixel electrode;
It is characterized in that: the grid of described the first transistor and transistor seconds is electrically connected to two adjacent sweep traces respectively, source electrode is electrically connected to identical data line respectively, and the transistorized source electrode in any two adjacent pixel region is electrically connected to opposite polarity data line.
2. liquid crystal indicator as claimed in claim 1 is characterized in that, when the polarity of described data line is when changing in the cycle with single, the transistorized source electrode in described any two adjacent pixel region is electrically connected to opposite polarity data line and specifically comprises:
In delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected;
And in the same row, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
3. liquid crystal indicator as claimed in claim 1, it is characterized in that, when the polarity of described data line is to change in the cycle with two, and when the two data lines polarity that form same pixel region are opposite, transistorized source electrode in described any two adjacent pixel region is electrically connected to opposite polarity data line, specifically comprises:
In delegation, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of same side be electrical connected;
And in the same row, the transistorized source electrode in the adjacent pixel region respectively with the data line that forms its place pixel region in the data line of opposition side be electrical connected.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: described liquid crystal indicator is the multidomain vertical alignment type liquid crystal indicator, is formed with a plurality of slits or protrusion on described first pixel electrode and second pixel electrode.
5. the driving method of a liquid crystal indicator comprises:
Utilize sweep trace and data line to intersect to form the array of pixel region mutually;
First pixel electrode and second pixel electrode are set in each described pixel region;
The first transistor and transistor seconds are set in each described pixel region control described first pixel electrode and second pixel electrode respectively;
Utilize the first transistor and second crystal in two adjacent transmit scan line sweep signal control corresponding row pixel regions to open or close respectively;
Utilize first pixel electrode and second pixel electrode of the identical data line data signal of polarity to each pixel region.
It is characterized in that: utilize opposite polarity data line data signal respectively to any two adjacent pixel region.
6. driving method as claimed in claim 5 is characterized in that, when the polarity of described data line is when changing in the cycle with single, describedly utilizes opposite polarity data line data signal to any two adjacent pixel region respectively, specifically comprises:
The data line data signal of utilizing opposition side respectively to in the delegation, adjacent pixel region;
The data line data signal of utilizing opposition side respectively to same row, adjacent pixel region.
7. driving method as claimed in claim 5, it is characterized in that, when the polarity of described data line is to change in the cycle with two, and when the two data lines polarity that form same pixel region are opposite, utilize opposite polarity data line data signal to any two adjacent pixel region respectively, specifically comprise:
The data line data signal of utilizing same side respectively to in the delegation, adjacent pixel region;
The data line data signal of utilizing opposition side respectively to same row, adjacent pixel region.
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| CN104766582B (en) * | 2015-04-24 | 2017-12-05 | 合肥京东方光电科技有限公司 | A kind of regulating system and its adjusting method and display device |
| CN106066560A (en) * | 2016-08-17 | 2016-11-02 | 武汉华星光电技术有限公司 | The test circuit of a kind of array base palte and liquid crystal display |
| US10718981B2 (en) * | 2017-06-09 | 2020-07-21 | Vastview Technology Inc. | LCD device with self-compensated electrode patterns |
| CN107193147B (en) * | 2017-07-24 | 2020-05-05 | 武汉华星光电技术有限公司 | Touch display panel, display method thereof and display device |
| CN107507587A (en) * | 2017-08-25 | 2017-12-22 | 惠科股份有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| CN107608138A (en) * | 2017-09-19 | 2018-01-19 | 惠科股份有限公司 | Liquid crystal display device and method for manufacturing the same |
| CN208521584U (en) * | 2018-07-24 | 2019-02-19 | 京东方科技集团股份有限公司 | A kind of dot structure, display panel and display device |
| CN109859705A (en) * | 2019-01-30 | 2019-06-07 | 惠科股份有限公司 | Driving method, display panel and driving module |
| CN113219744A (en) * | 2021-04-20 | 2021-08-06 | 北海惠科光电技术有限公司 | Display panel, display device, and driving method of display panel |
| CN113284427B (en) * | 2021-05-28 | 2022-01-14 | 惠科股份有限公司 | Display panel and spliced display screen |
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