CN102749775B - Array substrate, display device and method for driving array substrate - Google Patents
Array substrate, display device and method for driving array substrate Download PDFInfo
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- CN102749775B CN102749775B CN201210220207.0A CN201210220207A CN102749775B CN 102749775 B CN102749775 B CN 102749775B CN 201210220207 A CN201210220207 A CN 201210220207A CN 102749775 B CN102749775 B CN 102749775B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
- G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
Abstract
The invention discloses an array substrate, a display device and a method for driving the array substrate, relates to the display field, can realize polarity inversion, and also can effectively reduce driving voltage of a pixel electrode and a public electrode so as to realize a purpose of reducing consumption of electric quality. The array substrate comprises a plurality pixel units, a plurality of grid lines, a plurality of data lines, a plurality of first public electrode lines and a plurality of second public electrode lines, wherein the plurality of grid lines are used for providing grid scanning signals for the pixel units; the plurality of data lines are used for providing data signals for the pixel units; each first public electrode line is connected with an odd-column of pixel units, each second public electrode line is connected with an even-column of pixel units, public voltages with inverse polarities are respectively provided for the odd-column of pixel units and the even-column of pixel units, and the polarity of driving voltage difference loaded to any one pixel unit by using the data lines and the first/second public electrode lines is opposite to the polarity of the public voltage loaded to the pixel unit.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to the method for the described array base palte of a kind of array base palte, display device and driving.
Background technology
Liquid crystal indicator is a kind of device of widespread use in various electronic equipment, its displaying principle applies voltage difference to liquid crystal molecule, voltage difference produces electric field driven liquid crystal molecule and deflects, the degree of deflection of liquid crystal molecule is controlled by the voltage extent applied, thus light secretly bright controlled through liquid crystal layer outgoing, to show image, and reversal of poles must be carried out at set intervals to the voltage difference (driving voltage is poor) that liquid crystal molecule applies, permanent destruction is caused in order to avoid liquid crystal material to produce polarization, also in order to avoid image residual effect, therefore various inverting method is proposed, include: frame reverses, line reversion (comprising row reversion and row reversion) and some reversion.
Common thin-film transistor LCD device (Thin Film Transistor Liquid Crystal, TFT LCD), each pixel cell all configures a thin film transistor (TFT) (Thin Film Transistor, TFT), voltage difference is applied by TFT to liquid crystal molecule.The one of TFT LCD commonly uses tft array line as shown in Figure 1, in each pixel cell, to the Formation of liquid crystals electric capacity Clc folded by the electrode of liquid crystal molecule applying voltage difference and electrode, one end that the drain electrode of electric capacity Clc and TFT is connected is pixel electrode, the other one end be connected with public electrode wire 13 is public electrode, memory capacitance Cst and electric capacity Clc also connects, and the source electrode of TFT is connected with data line 12, and the grid of TFT is connected with grid line 11.Outside tft array, the public electrode wire 13 of whole panel all links together, and is fixed as a DC voltage; S
1~ S
4for data line 12, according to the GTG of required display, load corresponding analog voltage; G
1~ G
3for grid line 11, load gated sweep signal.
Based on above-mentioned tft array line, a kind of driving method for reversion that realizes is: adjacent pixel electrodes loads opposite polarity voltage respectively relative to the voltage of public electrode, and when next frame shows, the polarity of each pixel electrode on-load voltage is also reverse, as shown in Figure 2.Like this, the voltage difference polarity being loaded into adjacent pixel unit is contrary, and all positive and negative checker of each frame of voltage difference that same pixel cell loads, achieve a reversion.Wherein, the driving voltage (being called for short: pixel voltage) pixel electrode loaded is the driving voltage (being called for short: common electric voltage) that opposing common electrode loads.
In above process, inventor finds prior art at least there are the following problems:
The driving voltage of existing pixel electrode and public electrode is higher, makes power consumption larger.Such as, if liquid crystal cell work required voltage difference is 0 ~ ± 6V, when common electric voltage is set to 6V, then pixel electrode need the voltage loaded to change in 0 ~ 12V.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of array base palte, display device and driving method, both reversal of poles can be realized, effectively can reduce again the driving voltage of pixel electrode and public electrode, reduce the DC component (i.e. DC offset voltage) in driving voltage, reach the object reducing electric quantity consumption.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of array base palte, comprising:
Some pixel cells, described pixel cell comprises thin film transistor (TFT), pixel electrode and public electrode;
Some grid lines, wherein grid line described in each is connected with the grid of thin film transistor (TFT) in one-row pixels unit;
Some data lines, wherein data line described in each is connected by described thin film transistor (TFT) with the pixel electrode in a row pixel cell;
Some first public electrode wires and some second public electrode wires, be connected to the public electrode in described pixel cell, wherein the first public electrode wire described in each is connected with an odd column pixel unit, second public electrode wire described in each is connected with an even column pixels unit, opposite polarity common electric voltage is provided respectively to described odd column pixel unit and described even column pixels unit, the polarity of the driving voltage difference of arbitrary described pixel cell is loaded into by described data line and described first public electrode wire/described second public electrode wire, contrary with the polarity of the common electric voltage being loaded into this pixel cell.
Further, described device, also comprises:
Grid line driving circuit, for applying gated sweep signal to described grid line;
Data line drive circuit, for applying data-signal to described data line;
Public electrode line drive circuit, for being applied to described first public electrode wire and described second public electrode wire by opposite polarity common electric voltage.
Alternatively, described public electrode line drive circuit, comprising:
Final election device, for the polarity control signal that basis receives, by the first common electric voltage preset and second common electric voltage of presetting, export described first public electrode wire and described second public electrode wire to, the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage.
Alternatively, described data line drive circuit comprises:
Digital-to-analogue converter, for the described polarity control signal according to input, in two groups of gray scale reference voltages, select one group of gray scale reference voltages to carry out digital-to-analog conversion, make the polarity being loaded into the driving voltage difference of arbitrary described pixel cell by described data line and described first public electrode wire/described second public electrode wire, keep contrary with the polarity of the common electric voltage being loaded into this pixel cell;
Described two groups of gray scale reference voltages are corresponding with described first common electric voltage and described second common electric voltage respectively.
Alternatively, described public electrode comprises some connected parts, and described pixel electrode is arranged on the below of described public electrode across insulation course, or, described pixel electrode comprises some connected parts, and described public electrode is arranged on the below of described pixel electrode across insulation course.
Alternatively, via hole is provided with in described insulation course, described public electrode is connected on described first public electrode wire or described second public electrode wire by the transparent conductive material be arranged in described via hole, described first public electrode wire or described second public electrode wire and described pixel electrode are arranged on same layer, and are positioned at the periphery of described pixel electrode.
Alternatively, at the edge of described array base palte, described some first public electrode wires are joined together to form common electric voltage first input end, and described some second public electrode wires are joined together to form common electric voltage second input end.
The embodiment of the present invention also provides a kind of display device, comprising: described arbitrary array base palte.
The embodiment of the present invention also provides a kind of method driving described array base palte, comprising:
When showing a frame picture, by each row pixel cell of described grid line successively conducting;
Often during the conducting of row pixel cell, by described data line, and described first public electrode wire or described second public electrode wire, contrary driving voltage difference is respectively loaded on described odd column pixel unit and described even column pixels unit, wherein, the common electric voltage being loaded into described odd column pixel unit is contrary with the polarity of the common electric voltage being loaded into described even column pixels unit, and the driving voltage difference being loaded into arbitrary described pixel cell is contrary with the polarity of the common electric voltage being loaded into this pixel cell.
Further, described method, also comprises:
Every a Preset Time, the common electric voltage being loaded into described odd column pixel unit and the common electric voltage being loaded into described even column pixels unit exchange once, exchange once to make the polarity of the driving voltage difference being loaded into described odd column pixel unit and described even column pixels unit.
Alternatively, during described often row pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, contrary driving voltage difference is respectively loaded on described odd column pixel unit and described even column pixels unit, specifically comprises:
During conducting a line pixel cell, the public electrode of described odd column pixel unit loads the first common electric voltage, the public electrode of described even column pixels unit loads the second common electric voltage, and the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage;
During the next line pixel cell that conducting is close to, the public electrode of described odd column pixel unit loads described second common electric voltage, and the public electrode of described even column pixels unit loads described first common electric voltage.
Alternatively, within the time of display one frame picture, the common electric voltage being loaded into arbitrary described pixel cell is maintained at predetermined level.
Alternatively, the common electric voltage being loaded on described pixel cell by described first public electrode wire or described second public electrode wire is ac square-wave voltage signal.
The embodiment of the present invention also provides the another kind of method driving described array base palte, comprising:
When showing a frame picture, by each row pixel cell of described grid line successively conducting;
During described pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, driving voltage difference is loaded on described pixel cell, the polarity of the driving voltage difference loaded during pixel cell conducting described in arbitrary neighborhood two row is contrary, and the driving voltage difference being loaded into arbitrary described pixel cell is contrary with the polarity of the common electric voltage being loaded into this pixel cell;
During display next frame picture, the polarity being loaded into the common electric voltage of arbitrary neighborhood two row pixel cell is exchanged once, exchanges once to make the polarity of the driving voltage difference being loaded into described arbitrary neighborhood two row pixel cell.
During described often row pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, driving voltage difference is loaded on described pixel cell, specifically comprises:
During the arbitrary row pixel cell of conducting, the public electrode of described odd column pixel unit and the public electrode of described even column pixels unit all load the first common electric voltage;
During the next line pixel cell that conducting is close to, the public electrode of described odd column pixel unit and described even column pixels unit all loads the second common electric voltage, and the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage.
Array base palte described in the embodiment of the present invention, display device and the described array base palte method of driving, have employed the first public electrode wire and the second public electrode wire two kinds of public electrode wires, wherein, first public electrode wire is connected with odd column pixel unit, second public electrode wire is connected with even column pixels unit, opposite polarity public voltage signal is provided respectively to odd column pixel unit and even column pixels unit, data line provides data-signal to pixel cell, voltage difference and the driving voltage of the relative public voltage signal of described data-signal are poor, be applied on pixel cell, produce electric field to drive liquid crystal deflecting element, and the polarity of this driving voltage difference need be reversed once at set intervals, the direction of an electric field produced also reverses once accordingly, permanent destruction is caused to avoid liquid crystal material to produce polarization.Particularly, the driving voltage difference of pixel cell always keeps contrary with common electric voltage, by the polarity of parity column controlled loading to the common electric voltage of pixel cell, conversion once to make (such as every frame) at set intervals, then the driving voltage difference of pixel cell also converts once thereupon, can reversal of poles be realized, comprise a reversion, row reversion and row reversion.In addition, because passing through the first public electrode wire and the second public electrode wire, pixel cell can load two opposite polarity common electric voltages, and the driving voltage difference of pixel cell always keeps contrary with common electric voltage, when the common electric voltage of a certain pixel cell is timing, the driving voltage difference being loaded into this pixel cell is negative; When common electric voltage is for time negative, the driving voltage difference being loaded into this pixel cell is just, therefore, display GTG is identical, when liquid crystal cell work required voltage difference is identical, arrange little common electric voltage and can meet work requirements, pixel voltage is relative common electric voltage, and pixel voltage also can reduce compared to existing technology.Such as, if liquid crystal cell work required voltage difference is still 0 ~ ± 6V, the opposite polarity common electric voltage being loaded into pixel cell can be set to 5V and-2V.When common electric voltage is 5V, driving electric potential difference is 0 ~-6V, then pixel electrode needs the voltage (i.e. the driving voltage of pixel electrode is called for short: pixel voltage) loaded to be-1 ~ 5V; When common electric voltage is-2V, driving electric potential difference is 0 ~ 6V, then pixel voltage changes in-2 ~ 4V, therefore generally speaking pixel voltage changes in-2 ~ 5V, 0 ~ 12V compared to existing technology, pixel voltage effectively reduces, and common electric voltage 5V is also minimized compared with 6V of the prior art with-2V.So, the method of the described array base palte of the array base palte that the embodiment of the present invention provides, display device and driving, can realize reversal of poles, also effectively can reduce the driving voltage of pixel electrode and public electrode, DC offset voltage is reduced, reaches the object reducing electric quantity consumption.
Accompanying drawing explanation
Fig. 1 is a kind of conventional tft array line schematic diagram in prior art;
Fig. 2 is the sequential control figure realizing some reversion in prior art;
Fig. 3 is the tft array line schematic diagram one of the array base palte in the embodiment of the present invention one;
Fig. 4 is the tft array line schematic diagram two of the array base palte in the embodiment of the present invention one;
Fig. 5 is the tft array line schematic diagram three of the array base palte in the embodiment of the present invention one;
Fig. 6 is the structural representation of data line drive circuit in the embodiment of the present invention one and public electrode line drive circuit;
Fig. 7 is the Control timing sequence figure that in the embodiment of the present invention one, data line drive circuit and public electrode line drive circuit export;
Fig. 8 is the structural representation of pixel cell in the embodiment of the present invention one;
Fig. 9 is the horizontal section structural representation that in the embodiment of the present invention one, a kind of concrete pixel cell is parallel to grid line;
Figure 10 is the method flow diagram driving array base palte in the embodiment of the present invention two;
Figure 11 is the driver' s timing figure driving array base palte to realize some reversion in the embodiment of the present invention two;
V diagram when Figure 12 is the liquid crystal indicator realization point reversion of 3 row 4 row in the embodiment of the present invention two during the first frame the first row pixel cell conducting;
Figure 13 is that the liquid crystal indicator that in the embodiment of the present invention two, 3 row 4 arrange realizes a schematic diagram for reversion;
Figure 14 is the schematic diagram that in the embodiment of the present invention two, liquid crystal indicator realizes row reversion;
Figure 15 is the schematic diagram that in the embodiment of the present invention two, liquid crystal indicator realizes row reversion.
Description of reference numerals
11-grid line, 12-data line,
13-public electrode wire, 131-first public electrode wire, 132-second public electrode wire,
14-pixel cell, 141-odd column pixel unit, 142-even column pixels unit,
15-grid line driving circuit, 16-data line drive circuit, 161-digital to analog converter,
17-public electrode line drive circuit, 20-thin film transistor (TFT), 21-liquid crystal,
22-pixel electrode, 23-public electrode, 24-insulation course, 241-via hole.
Embodiment
The embodiment of the present invention provides a kind of array base palte, display device and driving method, under the prerequisite realizing reversal of poles, effectively can reduce the driving voltage of pixel electrode and public electrode, reduces DC offset voltage, reaches the object reducing electric quantity consumption.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.Embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment one
The embodiment of the present invention provides a kind of array base palte, and Fig. 3 is the tft array line of this array base palte, comprising:
Some pixel cells 14, described pixel cell 14 comprises thin film transistor (TFT), pixel electrode and public electrode, for showing image;
Some grid line 11 (G
1~ G
n), wherein each grid line 11 is connected with the grid of thin film transistor (TFT) in one-row pixels unit 14, provides gated sweep signal to pixel cell 14;
Some data line 12 (S
1~ S
n), wherein each data line 12 is connected by described thin film transistor (TFT) with the pixel electrode in a row pixel cell 14, provides data-signal to pixel cell 14;
Some first public electrode wires 131 and some second public electrode wires 132, be connected to the public electrode in pixel cell 14, wherein each first public electrode wire 131 is connected with an odd column pixel unit 141, each second public electrode wire 132 is connected with an even column pixels unit 142, opposite polarity public voltage signal is provided respectively to odd column pixel unit 141 and even column pixels unit 142, the polarity of the driving voltage difference of arbitrary pixel cell 14 is loaded into by data line 12 and the first public electrode wire 131/ second public electrode wire 132, contrary with the polarity of the common electric voltage being loaded into this pixel cell 14.
The first public electrode wire 131 described in the present embodiment and the second public electrode wire 132 vertical array as shown in Figure 3, parallel with data line 12.
Alternatively, at the edge of array base palte, described some first public electrode wire 131 (G
1~ G
n) be joined together to form common electric voltage first input end, described some second public electrode wire 132 (S
1~ S
n) be joined together to form common electric voltage second input end.VCOM 1 representative in Fig. 3 inputs to the public voltage signal of the first public electrode wire, and VCOM2 representative inputs to the public voltage signal of the second public electrode wire.
Array base palte described in the present embodiment, grid line 11 provides gated sweep signal to pixel cell 14, controls pixel cell 14 and opens line by line to show image; Data line 12 provides data-signal to pixel cell simultaneously, first public electrode wire 131 (or second public electrode wire 132) is to pixel cell common electric voltage, thus driving voltage difference is applied on pixel cell, and the polarity of driving voltage difference always keeps contrary with the polarity of common electric voltage, being applied to by controlling the first public electrode wire 131 polarity that odd column pixel unit 141 and the second public electrode wire 132 are applied to the common electric voltage of even column pixels unit 142, a reversion, row reversion and row reversion can be realized.Such as, when display first frame picture, odd column pixel unit 141 loads positive common electric voltage, and drive electric potential difference to be negative, even column pixels unit 142 adds the common electric voltage loaded with, and drives electric potential difference to be just; When the second frame picture, odd column pixel unit 141 adds the common electric voltage loaded with, and drive electric potential difference to be just, even column pixels unit 142 loads positive common electric voltage, drives electric potential difference to be negative.If when showing every frame picture, the polarity of odd column pixel unit 141 and even column pixels unit 142 common electric voltage remains unchanged, and is row reversion; If when showing every frame picture, every conducting a line, the polarity of odd column pixel unit 141 and even column pixels unit 142 common electric voltage is all exchanged once, be then some reversion.It should be noted that, in said process, the polarity of driving voltage difference always always keeps contrary with the polarity of common electric voltage, the polarity of common electric voltage often changes once, then the polarity of driving voltage difference is for keeping in contrast, also changes once thereupon, so both reversal of poles can be realized, can effectively reduce pixel voltage and common electric voltage again, reduce DC offset voltage, reach the object reducing electric quantity consumption.
Further, as shown in Figure 4, described array base palte also comprises:
Grid line driving circuit 15, for applying gated sweep signal to grid line 11;
Data line drive circuit 16, for applying data-signal to data line 12;
Public electrode line drive circuit 17, for being applied to the first public electrode wire 131 and the second public electrode wire 132 by opposite polarity common electric voltage.
Alternatively, as shown in Figure 5, public electrode line drive circuit 17 also accessible site in data line drive circuit 16, opposite polarity common electric voltage selectivity, except applying gated sweep signal is to except grid line 11, is also applied to the first public electrode wire 131 and the second public electrode wire 132 by data line drive circuit 16.
Described public electrode line drive circuit 17, for opposite polarity common electric voltage being applied to the first public electrode wire 131 and the second public electrode wire 132, specific implementation and logical circuit various, within the scope of the technical characteristic that the present invention discloses, any those of ordinary skill in the art, are easy to according to driving method the design realizing public electrode line drive circuit 17.Such as, realize by two single choice devices or two relays.
Alternatively, in a kind of specific implementation, as shown in Figure 6, described public electrode line drive circuit 17 comprises:
Final election device, for the polarity control signal POL that basis receives, by the first common electric voltage VCOMH preset and the second common electric voltage VCOML of presetting, the polarity exporting the first public electrode wire 131 and the second public electrode wire 132, first common electric voltage VCOMH to is contrary with the polarity of the second common electric voltage VCOML.
The the first common electric voltage VCOMH preset in the present embodiment just (such as :+5V) is, the the second common electric voltage VCOML preset is for bearing (such as :-2V), and the VCOM 1 in figure and VCOM2 also represents the public voltage signal inputing to the first public electrode wire 131 and the second public electrode wire 132 respectively.Different driving method requires that the clock signal that VCOM1 with VCOM2 specifically exports is different, and the polarity control signal POL designed thus is also different, and the specific works process of final election device and connected mode are also different.
Such as, when realizing row reversion, require that the polarity of VCOM1 and VCOM2 keeps synchronous change, the complete polarity of every frame scan is changed once, at this moment the first public electrode wire 131 and the second public electrode wire 132 can connect same output terminal, make the polarity of VCOM1 and VCOM2 keep synchronous change, the every frame of level of polarity control signal POL is changed once, makes the every frame synchronization conversion of the polarity of VCOM1 and VCOM2 once.
When such as realizing row reversion or some reversion again, two output terminals of final election device, one connects the first public electrode wire, one connects the second public electrode wire, as shown in Figure 7, specific works process is as follows: when polarity control signal POL is high level, and final election device exports the first common electric voltage VCOMH to the first public electrode wire 131 preset, and exports the second common electric voltage VCOML to the second public electrode wire 132 preset; When polarity control signal POL is low level, final election device exports VCOML to the first public electrode wire 131, exports VCOMH to the second public electrode wire 132.If the level change of each frame polarity control signal POL once, then the every frame of the polarity of VCOM1 and VCOM2 exchanges once, namely can be used to realize row reversion.Further, if the level of polarity control signal POL presses line frequency change, namely during the display of each frame, every conducting one-row pixels unit 14, the level change of polarity control signal POL once, ensures that adjacent rows same column loads the contrary voltage of positive-negative polarity, to realize a reversion.
As shown in Figure 6, wherein said data line drive circuit 16 comprises: digital-to-analogue converter 161, for the polarity control signal POL according to input, in two groups of gray scale reference voltages, select one group of gray scale reference voltages to carry out digital-to-analog conversion, make the polarity being loaded into the driving voltage difference of arbitrary described pixel cell by described data line and described first public electrode wire/described second public electrode wire, keep contrary with the polarity of the common electric voltage being loaded into this pixel cell; Two groups of gray scale reference voltages (VREFH with VREFL) required when digital-to-analogue converter 161 carries out digital-to-analog conversion are corresponding with the first common electric voltage VCOMH and the second common electric voltage VCOML respectively.In Fig. 6, SCLK is serial clock signal, and Data is display grayscale signal, and LD is Data import synchronizing signal.
If display GTG is respectively 0,1,2 and 3, with display GTG accordingly liquid crystal cell required voltage difference (pixel cell driving voltage is poor) be respectively 0V, ± 2V, ± 4V and ± 6V, the the first common electric voltage VCOMH preset and the second common electric voltage VCOML preset is set to 5V and-2V respectively, when the public electrode of pixel cell 14 loads negative voltage-2V, corresponding display greyscale pixel electrode on-load voltage (pixel voltage) is respectively-2V, 0V, 2V and 4V; When public electrode loads positive voltage 5V, corresponding display greyscale pixel voltage is respectively 5V, 3V, 1V and-1V.Two groups of gray scale reference voltages VREFH and VREFL required when digital-to-analogue converter 161 carries out digital-to-analog conversion are corresponding with VCOML and VCOMH respectively.First group of gray scale reference voltages VREFH for the pixel voltage corresponding to the second common electric voltage VCOML (-2V) preset, i.e.-2V, 0V, 2V and 4V; Second group of gray scale reference voltages VREFL is the pixel voltage corresponding with the first common electric voltage VCOMH (5V) preset, i.e. 5V, 3V, 1V and-1V.
Data line (the S of data line drive circuit output channel (1 ~ N) and tft array
1~ S
n) be connected, polarity control signal POL controls the polarity of voltage of output channel, and odd number output channel and even-numbered channels adopt VREFH and VREFL respectively.Particularly, as shown in Figure 7, when polarity control signal POL is high level, MUX final election device exports VCOML (-2V) at VCOM1, VCOM2 exports VCOMH (+5V), and for being loaded into the data-signal (the odd number output channel of corresponding data line drive circuit) of odd column pixel unit, digital-to-analogue converter 161 adopts the first group gray scale reference voltages VREFH corresponding with the second common electric voltage VCOML (-2V), i.e.-2V, 0V, 2V and 4V when carrying out digital-to-analog conversion; For the data-signal (the even number output channel of corresponding data line drive circuit) being loaded into described even column pixels unit, second group gray scale reference voltages VREFL, i.e. 5V, 3V, 1V and the-1V corresponding with the first common electric voltage VCOMH (+5V) is adopted when carrying out digital-to-analog conversion.When polarity control signal becomes low level, odd number output channel adopts second group of gray scale reference voltages VREFL, and even number output channel adopts first group of gray scale reference voltages VREFH, COM1 to export VCOMH, VCOM2 and exports VCOML.Digital-to-analogue converter 161 specific implementation is various, wherein a kind of optional implementation is realized by the selector switch of alternative and existing digital-to-analogue reforming unit, when digital-to-analogue reforming unit carries out digital-to-analog conversion to odd number output channel/even number output channel, first select one group of gray scale reference voltages by the selector switch of alternative, then carry out digital-to-analog conversion according to this group gray scale reference voltages selected.The polarity control signal POL that the selector switch of alternative inputs according to control end selects one to input existing digital-to-analogue reforming unit two groups of gray scale reference voltages (VREFH and VREFL).
As shown in Figure 8, pixel cell 14 described in the present embodiment can comprise:
Thin film transistor (TFT) 20, it has the grid be connected with grid line 11, the source electrode be connected with data line 12, and is received the drain electrode being applied to the data-signal of source electrode by raceway groove; And,
Pixel electrode 22 is connected to the drain electrode of thin film transistor (TFT) 20, and public electrode 23 is connected to the first public electrode wire 131 or the second public electrode wire 132.Memory capacitance Cst in figure is stray capacitance between public electrode wire and data line.
Alternatively, a kind of concrete structure of pixel cell described in the present embodiment as shown in Figure 9, public electrode 23 comprises some connected parts (gap electrode), and pixel electrode 22 is a monoblock (plate electrode), is arranged on the below of public electrode 23 across insulation course 24.
Wherein, the gap electrode of top also can be used as public electrode, and corresponding below plate electrode is as pixel electrode, and namely pixel electrode comprises some connected parts (gap electrode), and public electrode is arranged on the below of described pixel electrode across insulation course.
More specifically, via hole 241 is provided with in insulation course 24, public electrode is connected on the first public electrode wire 131 or the second public electrode wire 132 by the transparent conductive material be arranged in via hole 241, first public electrode wire 131 or the second public electrode wire 132 are arranged on same layer with pixel electrode 22, and are positioned at the periphery of pixel electrode 22.
Figure 9 shows that the pixel cell structure described in a kind of embodiment of the present invention, be applicable to senior super dimension field switch technology (ADvanced Super Dimension Switch, be called for short ADS) or the LCD device array substrates of face internal conversion (In-Plane Switch, IPS) pattern.Senior super dimension field switch technology, the electric field that the electric field produced by gap electrode edge in same plane and gap electrode layer and plate electrode interlayer are produced forms multi-dimensional electric field, make in liquid crystal cell that between gap electrode, directly over electrode, all aligned liquid-crystal molecules can both produce rotation, thus improve liquid crystal work efficiency and increase light transmission efficiency.Senior super dimension field switch technology can improve the picture quality of TFT-LCD product, there is high resolving power, high permeability, low-power consumption, wide viewing angle, high aperture, low aberration, without advantages such as water of compaction ripples (push Mura), compared to existing technology, just in pixel electrode 22 (being equivalent to plate electrode) place layer, be provided with the first public electrode wire 131 or the second public electrode wire 132 more, be arranged in the up and down or left and right of pixel electrode 22, do not need to make large improvement to the production line of existing ADS or IPS mode LCD array base palte, this LCD device array substrates can be produced.Public electrode wire material can with grid line with material system, also can with data line with material system.Certainly also can have a lot of conversion according to reality, the gap electrode be such as in above insulation course is pixel electrode, and the plate electrode be in below insulation course is public electrode, and the setting of public electrode wire is the same with above-mentioned situation.
It should be noted that the embodiment of the present invention is not when conflicting, can combination in any use.
Array base palte described in the present embodiment, have employed the first public electrode wire and the second public electrode wire two kinds of public electrode wires, for providing two kinds of opposite polarity public voltage signal to pixel cell, and the driving voltage difference being loaded into pixel cell is always contrary with the polarity of the common electric voltage being loaded into this pixel cell, therefore when liquid crystal cell work required voltage difference is identical, can effectively reduce pixel voltage and common electric voltage, reduce DC offset voltage poor, reach the object of saving electric quantity consumption.
The embodiment of the present invention additionally provides a kind of display device, and it comprises any one array base palte above-mentioned.Described display device can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
The display device that the embodiment of the present invention provides can effectively reduce pixel voltage and common electric voltage, reduces DC offset voltage poor, reaches the object of saving electric quantity consumption.
Embodiment two
Based on the array base palte described in embodiment one, the embodiment of the present invention provides a kind of method driving this array base palte, and as shown in Figure 10, the method comprises:
Step 101, when showing a frame picture, by each row pixel cell of grid line successively conducting;
When step 102, the often conducting of row pixel cell, pass through data line, and first public electrode wire or the second public electrode wire, contrary driving voltage difference is respectively loaded on odd column pixel unit and even column pixels unit, wherein, the common electric voltage being loaded into odd column pixel unit is contrary with the polarity of the common electric voltage being loaded into even column pixels unit, and the driving voltage difference being loaded into arbitrary pixel cell is contrary with the polarity of the common electric voltage being loaded into this pixel cell.
The method of array base palte is driven described in the present embodiment, the common electric voltage being loaded into odd column pixel unit is contrary with the polarity of the common electric voltage being loaded into even column pixels unit, and the driving voltage difference being loaded into arbitrary pixel cell is always contrary with the polarity of the common electric voltage being loaded into this pixel cell, therefore when liquid crystal cell work required voltage difference is identical, can effectively reduce pixel voltage and common electric voltage, reduce DC offset voltage poor, reach the object of saving electric quantity consumption
Alternatively, the method for described driving array base palte, also comprises:
Step 103, every a Preset Time, the common electric voltage being loaded into odd column pixel unit and the common electric voltage being loaded into even column pixels unit exchange once, exchange once to make the polarity of the driving voltage difference being loaded into odd column pixel unit and even column pixels unit, the direction of an electric field produced also reverses once accordingly, causes permanent destruction to avoid liquid crystal material to produce polarization.Wherein, described Preset Time is the interval time of driving voltage difference and direction of an electric field reversion in pixel cell, preferably, be loaded into odd column pixel unit, the every frame of common electric voltage of even column pixels unit exchanges once, the polarity of driving voltage difference also every frame is exchanged once.
Further alternatively, during the reversion of specific implementation point, described driving method step is specific as follows:
Step 11, in the display of a certain frame picture, during conducting a line pixel cell, the public electrode of the odd column pixel unit of this row loads the first common electric voltage VCOMH, the public electrode of the even column pixels unit of this row loads the second common electric voltage VCOML, the polarity of the first common electric voltage VCOMH is contrary with the polarity of the second common electric voltage VCOML, during the next line pixel cell that conducting is close to, the public electrode of odd column pixel unit loads the second common electric voltage VCOML, and the public electrode of even column pixels unit loads the first common electric voltage VCOMH;
Step 12, display next frame picture, the common electric voltage being loaded into odd column pixel unit and the common electric voltage being loaded into even column pixels unit exchange once, exchange once to make the polarity of the driving voltage difference being loaded into odd column pixel unit and even column pixels unit.
For ease of explanation, for 3 row 4 row pel arrays, suppose that operating voltage needed for liquid crystal cell is 0 ~ ± 6V, the negative voltage (VCOML) of VCOM 1 and VCOM2 is-2V, positive voltage (VCOMH) is+5V, for realizing the work relative to common electric voltage 0 ~ ± 6V, then the scope of pixel voltage is-2 ~ 4V.The driver' s timing realizing some reversion as shown in figure 11, lists the driver' s timing of continuous 3 two field pictures in figure.S1 ~ S4 representative data line S in figure
1~ S
4on clock signal figure, G1 ~ G3 represents grid line G
1~ G
4on clock signal figure, VCOM1 and VCOM2 represents the clock signal figure on the first public electrode wire, the second public electrode wire respectively.Display GTG is respectively 0,1,2 and 3, and corresponding liquid crystal cell voltage is respectively 0V, ± 2V, ± 4V and ± 6V, and display GTG marks on the data-signal sequential chart of S1 ~ S4 in fig. 11.When VCOM loads negative voltage-2V, pixel voltage is respectively-2V, 0V, 2V and 4V; When VCOM loads positive voltage+5V, pixel voltage is respectively 5V, 3V, 1V and-1V.
Particularly, first in the first frame scan, during scanning the first row, the public electrode VCOM 1 of odd column loads negative voltage-2V, the public electrode VCOM2 of even column loads positive voltage+5V, then for pixel electrode, odd column loads the positive voltage relative to VCOM1, and even column loads the negative voltage relative to VCOM2.Particularly, the first row first row public electrode VCOM1 loading-2V, display GTG is 2, then corresponding driving electric potential difference is+4V, and the voltage that pixel electrode loads is+2V.Similarly, the first row secondary series pixel electrode loading+3V, the 3rd row pixel electrode loading+4V, the 4th row pixel electrode loading+1V, forms the electric field of positive and negative checker, as shown in figure 12 in same a line.When scanning the second row, the voltage that odd column and even column pixels unit public electrode load exchanges, VCOM1 loading+5V, VCOM2 loading-2V, and circulating with this drives remaining rows TFT pixel, completes the first frame scan.
Then, in the second frame scan, during scanning the first row, public electrode loads voltage contrary when scanning with previous frame the first row, and namely VCOM1 is+5V, VCOM2 is-2V, and circulating with this drives scanning remaining rows TFT pixel, completes the second frame scan.Result as shown in figure 13."+" in figure represents that the pixel voltage of this pixel cell is higher than common electric voltage, otherwise "-" then represents that pixel voltage forces down than common electrical.
Scan frame by frame by this rule, can realize a reversion, namely the polarity of the driving electric potential difference of the adjacent each pixel cell in space is contrary, and the driving electric potential difference polarity that adjacent two frames of same pixel cell load is contrary, and namely every frame reversion once.
Alternatively, as shown in figure 14, shown in step 101 ~ 103, within the time of display one frame picture, the common electric voltage being loaded into arbitrary described pixel cell is maintained at predetermined level, then can realize row reversion.
Alternatively, the common electric voltage being loaded on described first public electrode wire or described second public electrode wire is ac square-wave voltage signal.
Drive the driving method of array base palte described in the present embodiment, when liquid crystal cell work required voltage difference is identical, can effectively reduces pixel voltage and common electric voltage, reduce DC offset voltage poor, reach the object of saving electric quantity consumption.
The embodiment of the present invention also provides another kind of driving method, is applicable to array base palte described in embodiment one, and can realize row reversion, the method comprises:
Step 201, when showing a frame picture, by each row pixel cell of described grid line successively conducting;
When step 202, described often row pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, driving voltage difference is loaded on described pixel cell, the polarity of the driving voltage difference loaded during pixel cell conducting described in arbitrary neighborhood two row is contrary, and the driving voltage difference being loaded into arbitrary described pixel cell is contrary with the polarity of the common electric voltage being loaded into this pixel cell;
When step 203, display next frame picture, the polarity being loaded into the common electric voltage of arbitrary neighborhood two row pixel cell is exchanged once, exchanges once to make the polarity of the driving voltage difference being loaded into described arbitrary neighborhood two row pixel cell.
Particularly, as shown in figure 15, when realizing row reversion, when scanning N-I frame, step 202 comprises:
During 21, conducting a line pixel cell, the public electrode of described odd column pixel unit and the public electrode of described even column pixels unit all load the first common electric voltage;
When 22, leading to the next line pixel cell of next-door neighbour, the public electrode of described odd column pixel unit and described even column pixels unit all loads the second common electric voltage, and the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage.
When showing N frame (next frame) picture, be loaded into the reversal of the common electric voltage of the pixel cell of arbitrary neighborhood two row once.Scan frame by frame by this rule, row reversion can be realized
The method driving array base palte to realize reversal of poles described in embodiment one is not limited in above-described mode, introduces no longer one by one herein.
The driving method of array base palte is driven described in the present embodiment, when liquid crystal cell work required voltage difference is identical, a reversion, row reversion and row reversion can be realized, also can effectively reduce pixel voltage and common electric voltage simultaneously, reduce DC offset voltage poor, reach the object of saving electric quantity consumption.
The array base palte that the embodiment of the present invention provides can realize the above-mentioned embodiment of the method provided, and concrete function realizes the explanation referred in embodiment of the method, does not repeat them here.The array base palte that the embodiment of the present invention provides and driving method thereof go for display field, but are not limited only to this.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computing machine, hard disk or CD etc., comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (13)
1. an array base palte, is characterized in that, comprising:
Some pixel cells, described pixel cell comprises thin film transistor (TFT), pixel electrode and public electrode;
Some grid lines, wherein grid line described in each is connected with the grid of thin film transistor (TFT) in one-row pixels unit;
Some data lines, wherein data line described in each is connected by described thin film transistor (TFT) with the pixel electrode in a row pixel cell;
Some first public electrode wires and some second public electrode wires, be connected to the public electrode in described pixel cell, wherein the first public electrode wire described in each is connected with an odd column pixel unit, second public electrode wire described in each is connected with an even column pixels unit, respectively to the common electric voltage that described odd column pixel unit and described even column pixels unit provide polarity to differ in size on the contrary, the polarity of the driving voltage difference of arbitrary described pixel cell is loaded into by described data line and described first public electrode wire/described second public electrode wire, contrary with the polarity of the common electric voltage being loaded into this pixel cell,
Public electrode line drive circuit, for opposite polarity common electric voltage being applied to described first public electrode wire and described second public electrode wire, described public electrode line drive circuit, comprise: final election device, for the polarity control signal that basis receives, by the first common electric voltage preset and second common electric voltage of presetting, export described first public electrode wire and described second public electrode wire to, the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage;
Data line drive circuit, for applying data-signal to described data line, described data line drive circuit comprises: digital-to-analogue converter, for the described polarity control signal according to input, in two groups of gray scale reference voltages, select one group of gray scale reference voltages to carry out digital-to-analog conversion, make the polarity being loaded into the driving voltage difference of arbitrary described pixel cell by described data line and described first public electrode wire/described second public electrode wire, keep contrary with the polarity of the common electric voltage being loaded into this pixel cell; Described two groups of gray scale reference voltages are corresponding with described first common electric voltage and described second common electric voltage respectively.
2. array base palte according to claim 1, is characterized in that, also comprises: grid line driving circuit, for applying gated sweep signal to described grid line.
3. array base palte according to claim 1, is characterized in that
Described public electrode comprises some connected parts, described pixel electrode is arranged on the below of described public electrode across insulation course, or described pixel electrode comprises some connected parts, and described public electrode is arranged on the below of described pixel electrode across insulation course.
4. array base palte according to claim 3, is characterized in that,
Via hole is provided with in described insulation course, described public electrode is connected on described first public electrode wire or described second public electrode wire by the transparent conductive material be arranged in described via hole, described first public electrode wire or described second public electrode wire and described pixel electrode are arranged on same layer, and are positioned at the periphery of described pixel electrode.
5. the array base palte according to any one of claim 1-4, is characterized in that,
At the edge of described array base palte, described some first public electrode wires are joined together to form common electric voltage first input end, and described some second public electrode wires are joined together to form common electric voltage second input end.
6. a display device, is characterized in that, comprising: the arbitrary described array base palte of claim 1-5.
7. drive a method for described array base palte, it is characterized in that, comprising:
When showing a frame picture, by each row pixel cell of described grid line successively conducting;
Often during the conducting of row pixel cell, by described data line, and described first public electrode wire or described second public electrode wire, contrary driving voltage difference is respectively loaded on described odd column pixel unit and described even column pixels unit, wherein, the common electric voltage being loaded into described odd column pixel unit is contrary with the polarity of the common electric voltage being loaded into described even column pixels unit to differ in size, and the driving voltage difference being loaded into arbitrary described pixel cell is contrary with the polarity of the common electric voltage being loaded into this pixel cell.
8. method according to claim 7, is characterized in that, also comprises:
Every a Preset Time, the common electric voltage being loaded into described odd column pixel unit and the common electric voltage being loaded into described even column pixels unit exchange once, exchange once to make the polarity of the driving voltage difference being loaded into described odd column pixel unit and described even column pixels unit.
9. the method according to claim 7 or 8, it is characterized in that, during described often row pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, contrary driving voltage difference is respectively loaded on described odd column pixel unit and described even column pixels unit, specifically comprises:
During conducting a line pixel cell, the public electrode of described odd column pixel unit loads the first common electric voltage, the public electrode of described even column pixels unit loads the second common electric voltage, and the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage;
During the next line pixel cell that conducting is close to, the public electrode of described odd column pixel unit loads described second common electric voltage, and the public electrode of described even column pixels unit loads described first common electric voltage.
10. the method according to claim 7 or 8, is characterized in that,
Within the time of display one frame picture, the common electric voltage being loaded into arbitrary described pixel cell is maintained at predetermined level.
11. methods according to claim 7, is characterized in that,
The common electric voltage being loaded on described pixel cell by described first public electrode wire or described second public electrode wire is ac square-wave voltage signal.
The method of 12. 1 kinds of described array base paltes of driving, is characterized in that,
When showing a frame picture, by each row pixel cell of described grid line successively conducting;
During described often row pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, driving voltage difference is loaded on described pixel cell, the polarity of the driving voltage difference loaded during pixel cell conducting described in arbitrary neighborhood two row differs in size on the contrary, and the driving voltage difference being loaded into arbitrary described pixel cell is contrary with the polarity of the common electric voltage being loaded into this pixel cell;
During display next frame picture, the polarity being loaded into the common electric voltage of arbitrary neighborhood two row pixel cell is exchanged once, exchanges once to make the polarity of the driving voltage difference being loaded into described arbitrary neighborhood two row pixel cell.
13. methods according to claim 12, is characterized in that, during described pixel cell conducting, by described data line, and described first public electrode wire or described second public electrode wire, driving voltage difference is loaded on described pixel cell, specifically comprises:
During conducting a line pixel cell, the public electrode of described odd column pixel unit and the public electrode of described even column pixels unit all load the first common electric voltage;
During the next line pixel cell that conducting is close to, the public electrode of described odd column pixel unit and described even column pixels unit all loads the second common electric voltage, and the polarity of described first common electric voltage is contrary with the polarity of described second common electric voltage.
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| CN104240661B (en) * | 2014-09-05 | 2017-02-08 | 京东方科技集团股份有限公司 | Polarity inversion driving method, polarity inversion driving device and display device |
| CN104680998B (en) * | 2015-03-18 | 2017-03-08 | 京东方科技集团股份有限公司 | A kind of source electrode driver and liquid crystal indicator |
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