CN108257576A - Array substrate and its driving method and liquid crystal display device and its driving method - Google Patents
Array substrate and its driving method and liquid crystal display device and its driving method Download PDFInfo
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- CN108257576A CN108257576A CN201810301840.XA CN201810301840A CN108257576A CN 108257576 A CN108257576 A CN 108257576A CN 201810301840 A CN201810301840 A CN 201810301840A CN 108257576 A CN108257576 A CN 108257576A
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- 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
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Abstract
The invention discloses a kind of array substrate and its driving methods and liquid crystal display device and its driving method,Array substrate is equipped with multi-strip scanning line,Multiple data lines,A plurality of common wire,Multiple public electrode blocks and multiple pixel units,Each public electrode block covers two adjacent pixel units simultaneously along scan-line direction,Pixel electrode is equipped in each pixel unit,Two neighboring pixel unit is one group of array arrangement in array substrate on scan-line direction,Pixel electrode in one of pixel unit of every group of pixel unit is connect by the first switching element and second switch element of series connection with the data line of two scan lines positioned at both sides above and below pixel unit and two switch elements for closing on series connection,Pixel electrode in other in which pixel unit is connect by third switch element with the scan line and data line closed on,Each public electrode block is connect by the 4th switch element with the scan line and common wire for closing on the 4th switch element.
Description
Technical field
The present invention relates to the technical field of liquid crystal display, more particularly to a kind of array substrate and its driving method and liquid crystal
Display device and its driving method.
Background technology
Liquid crystal display device (liquid crystal display, LCD) has good, small, light-weight, the low drive of image quality
It the advantages of dynamic voltage, low-power consumption, radiationless and manufacture advantage of lower cost, occupies an leading position in flat display field.
With being constantly progressive for LCD technology, the visible angle of display is widened via original 120 ° or so
160 ° or more, while people bring visual experience at the big visual angle of enjoyment, it is also desirable to effective protection trade secret and individual privacy,
To avoid screen message leaks and caused by business loss or embarrassment.Therefore other than wide viewing angle, it is also necessary to which display device can
To switch to narrow viewing angle.
Recently, industry starts to propose to apply to liquid crystal molecule using the viewing angle control electrode of colored filter substrate (CF) side
Add a vertical electric field, to realize width view angle switch.Please join Fig. 1 and Fig. 2, the liquid crystal display device include upper substrate 62, under
Substrate 61 and the liquid crystal layer 63 between upper substrate 62 and lower substrate 61, upper substrate 62 are equipped with viewing angle control electrode 621.Such as
Shown in Fig. 1, when wide viewing angle is shown, the viewing angle control electrode 621 on upper substrate 62 not to voltage, realize wide by liquid crystal display device
Visual angle is shown.As shown in Fig. 2, when narrow viewing angle is needed to show, the viewing angle control electrode 621 on upper substrate 62 is to voltage, liquid crystal
Liquid crystal molecule in layer 63 can be tilted because of vertical direction electric field E (as shown by the arrows in Figure 2), and liquid crystal display device is because of leakage
Light and contrast reduce, final to realize that narrow viewing angle is shown.
When narrow viewing angle is shown, added voltage is generally alternating voltage on viewing angle control electrode.Liquid crystal display device exists
It when showing a frame picture, is progressively scanned along direction from top to bottom, since viewing angle control electrode is entire plane electricity
Pole, when the first horizontal scanning line G1 is opened, viewing angle control electrode is already endowed with alternating voltage, when following G2-Gn is opened,
The voltage of scan line is changed to VGL by VGH, since the capacitive coupling between scan line and viewing angle control electrode influences, per instantly
When one horizontal scanning line is opened, the signal on viewing angle control electrode be coupled once, cause the pixel of different location in panel by
Coupling influence to signal is inconsistent, causes to cause film flicker, apparent bright dark fringe occurs in waveform voltage trip point,
The problem of position region property of the liquid crystal display device close to lower end band-like display uneven (band mura).
In order to solve this problem, the prior art passes through the drive waveforms to being applied to the alternating voltage on viewing angle control electrode
It optimizes to reduce the uneven influence of caused display with driving voltage, but can not completely eliminate；Or by by liquid
The frame frequency of crystal device is increased to 120Hz, and to mitigate the flicker of picture, but the time that every scan line is opened in this way subtracts
Half, the charging time of pixel can be reduced, the charging effect of pixel is impacted.
Invention content
In order to overcome shortcoming and defect in the prior art, the purpose of the present invention is to provide a kind of array substrate and
Its driving method and liquid crystal display device and its driving method, to improve the problem of image quality display is uneven.
The purpose of the present invention is achieved through the following technical solutions：
The present invention provides a kind of array substrate, and array substrate is equipped with multi-strip scanning line and multiple data lines and multiple pixels
Electrode is additionally provided with a plurality of common wire and public electrode in array substrate, and a plurality of common wire and multiple data lines are prolonged in same direction
It stretches and is arranged alternately with each other, multi-strip scanning line intersects restriction with multiple data lines and the insulation of a plurality of common wire and forms multiple pixels
Unit；Public electrode includes the public electrode block of multiple array distributions and mutually insulated, and each public electrode block is along scan line side
To two adjacent pixel units of covering simultaneously, two neighboring pixel unit is one group of array in array substrate on scan-line direction
Arrangement, pixel electrode in one of pixel unit of every group of pixel unit pass through the first switching element of series connection and the
Two switch elements are with being located at pixel unit two scan lines of both sides and the first switching element for closing on to connect and second up and down
The data line of switch element connects, and the pixel electrode in other in which pixel unit is by third switch element and closes on third
Scan line and the data line connection of switch element, each public electrode block is by the 4th switch element and closes on the 4th switch element
Scan line and common wire connection.
Further, the control terminal of first switching element is with being located at two scan lines of both sides above and below pixel unit wherein
One of connection, wherein another connection of the control terminal of second switch element and two scan lines, first switching element is wherein
One conducting end is connect with data line, and one of conducting end of second switch element is connect with pixel electrode, first switch member
Another conducting end of part is connect with another conducting end of second switch element.
Further, the control terminal of first switching element is connect with the scan line on the upside of pixel unit, second switch
The control terminal of element is connect with the scan line on the downside of pixel unit.
Further, the control terminal of second switch element passes through a connecting line and the scan line on the downside of pixel unit
Connection.
Further, the control of the control terminal of first switching element, the control terminal of third switch element and the 4th switch element
End processed is connected in same scan line.
The present invention also provides a kind of driving method of array substrate, driving method includes：
In adjacent three scan lines Gn, Gn+1, Gn+2, in first time period t1, while make scan line Gn and scan line
Gn+1 is high level, each picture being connect between scan line Gn and scan line Gn+1 with first switching element and second switch element
Plain unit, which is opened and passes through multiple data lines, is filled with correct data voltage, each public affairs between scan line Gn and scan line Gn+1
Common electrode block is filled with common voltage by a plurality of common wire；
In second time period t2, make scan line Gn for high level, scan line Gn+1 is low level, scan line Gn and scanning
The each pixel unit being connect between line Gn+1 with first switching element and second switch element is closed, scan line Gn and scan line
The each pixel unit being connect between Gn+1 with third switch element, which is opened and passes through multiple data lines, is filled with correct data electricity
Pressure, each public electrode block between scan line Gn and scan line Gn+1 are filled with common voltage by a plurality of common wire；
In third time period t 3, while scan line Gn+1 and scan line Gn+2 is made to be high level, scan line Gn+1 is with sweeping
The each pixel unit connecting with first switching element and second switch element between line Gn+2 is retouched to open and by a plurality of data
Micro USB enters correct data voltage, and each public electrode block between scan line Gn+1 and scan line Gn+2 passes through a plurality of common wire
It is filled with common voltage；
In the 4th time period t 4, make scan line Gn+1 for high level, scan line Gn+2 is low level, scan line Gn+1 with
Each pixel unit for being connect between scan line Gn+2 with first switching element and second switch element is closed, scan line Gn+1 with
The each pixel unit being connect between scan line Gn+2 with third switch element is opened and passes through multiple data lines and is filled with correctly
Data voltage, each public electrode block between scan line Gn+1 and scan line Gn+2 are filled with common electrical by a plurality of common wire
Pressure；
Wherein, n is the positive integer more than 1.
The present invention also provides a kind of liquid crystal display device, including array substrate as described above, opposite with array substrate set
The color membrane substrates put and the liquid crystal layer between array substrate and color membrane substrates, color membrane substrates are equipped with auxiliary electrode.
The present invention also provides a kind of driving method of liquid crystal display device, driving method includes：
Under the first field-of-view mode, apply auxiliary reference voltage to auxiliary electrode, by common wire to each common electrical
Pole block applies opposite auxiliary reference voltage with the common voltage compared with small pressure difference, makes between all public electrode blocks and auxiliary electrode
Voltage difference be less than preset value；
Under second of field-of-view mode, apply auxiliary reference voltage to auxiliary electrode, by common wire to each common electrical
Pole block, which applies opposite auxiliary reference voltage, has the common voltage of larger pressure difference, makes between all public electrode blocks and auxiliary electrode
Voltage difference be more than preset value.
Further, by common wire to each public electrode block apply common voltage when, to upper in scan-line direction
Apply the first common voltage in the common wire of odd positions, apply the to the common wire put of even bit is located on scan-line direction
Two common voltages, under the first field-of-view mode, the first common voltage and the second common voltage are and auxiliary reference voltage constant amplitude
DC voltage, under second of field-of-view mode, the first common voltage and the second common voltage are alternating voltage and the two polarity
On the contrary.
Further, liquid crystal layer use positive liquid crystal molecules, the first field-of-view mode be wide viewing angle pattern, second of visual angle
Pattern is narrow viewing angle pattern；Alternatively, liquid crystal layer use negative liquid crystal molecule, the first field-of-view mode be narrow viewing angle pattern, second
Kind field-of-view mode is wide viewing angle pattern.
Advantageous effect of the present invention is：By the way that the voltage of width view angle switch will be manipulated from the viewing angle control of color membrane substrates side
Electrode turns to be realized by the public electrode block of array substrate side, and additionally increases common wire and switch element, passes through data line
With common wire to the pixel electrode in pixel unit and public electrode block synchronize charge, each charged good pixel list
It is first between pixel unit to be charged not by voltage coupling influence, signal coupling can be effectively reduced, so as to solve in panel
The pixel of different location is improved due to uneven (Mura) problem of picture display of the inconsistent generation of coupling influence by signal
Display image quality.Therefore, the frame frequency of the liquid crystal display device can maintain the low frequency of 60Hz, advantageously reduce power consumption, increase
The charging time of pixel and charging effect.
Description of the drawings
Fig. 1 is a kind of schematic partial cross-sectional view of the existing liquid crystal display device in wide viewing angle.
Fig. 2 is a kind of schematic partial cross-sectional view of the existing liquid crystal display device in narrow viewing angle.
Fig. 3 is the circuit structure diagram of liquid crystal display device in first embodiment of the invention.
Fig. 4 is schematic partial cross-sectional view of the liquid crystal display device in wide viewing angle in first embodiment of the invention.
Fig. 5 is schematic partial cross-sectional view of the liquid crystal display device in narrow viewing angle in first embodiment of the invention.
Fig. 6 a are the drive waveforms schematic diagrames of liquid crystal display device nth frame in wide viewing angle in first embodiment of the invention.
Fig. 6 b are the drive waveforms signals of liquid crystal display device N+1 frames in wide viewing angle in first embodiment of the invention
Figure.
Fig. 7 a are the drive waveforms schematic diagrames of liquid crystal display device nth frame in narrow viewing angle in first embodiment of the invention.
Fig. 7 b are the drive waveforms signals of liquid crystal display device N+1 frames in narrow viewing angle in first embodiment of the invention
Figure.
Fig. 8 is schematic partial cross-sectional view of the liquid crystal display device in narrow viewing angle in second embodiment of the invention.
Fig. 9 is schematic partial cross-sectional view of the liquid crystal display device in wide viewing angle in second embodiment of the invention.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments, but is not the present invention's
Practical range is confined to this.
[first embodiment]
It please join Fig. 3 and Fig. 4, first embodiment of the invention provides a kind of array substrate, and array substrate 10 is equipped with a plurality of sweep
Retouch line 16, multiple data lines 17, a plurality of common wire 18 and public electrode 11.
Multiple data lines 17 and a plurality of common wire 18 extend in the same direction, and multiple data lines 17 and a plurality of common wire 18 exist
Setting is alternateed on 16 direction of scan line, by multi-strip scanning line 16 and multiple data lines 17 and a plurality of public in array substrate 10
18 mutually insulated of line, which intersects to limit, forms multiple pixel unit P, and pixel electrode 13 is equipped in each pixel unit P.
Public electrode 11 includes multiple public electrode blocks 111 in array distribution and mutually insulated, each public electrode block
111 cover two adjacent pixel unit P simultaneously along 16 direction of scan line.
Two adjacent pixel unit P are one group of array arrangement in array substrate 10 on scan-line direction, positioned at every group
First switching element 1 and the second switch member that pixel electrode 13 in one of pixel unit P of pixel unit P passes through series connection
Part 2 and two scan lines 16 positioned at both sides above and below pixel unit P and the first switching element 1 and second switch closing on to connect
The data line 17 of element 2 connects, and the pixel electrode 13 in other in which pixel unit P is by third switch element 3 with closing on
The scan line 16 and data line 17 of third switch element 3 connect, and each public electrode block 111 is by the 4th switch element 4 with facing
The scan line 16 and common wire 18 of nearly 4th switch element 4 connect.
Further, the control terminal of first switching element 1 is with being located above and below pixel unit P in two scan lines 16 of both sides
A wherein scan line 16 connect, the control terminal of second switch element 2 with positioned at pixel unit P two of both sides scannings up and down
Another scan line 16 in line 16 connects, and one of conducting end of first switching element 1 is connect with data line 17, and second opens
The one of conducting end for closing element 2 is connect with pixel electrode 13, another conducting end and second switch of first switching element 1
Another conducting end connection of element 2.The first switching element 1 of the present embodiment, second switch element 2, third switch element 3,
4th switch element 4 is all thin film transistor (TFT).
In the present embodiment, the control terminal of first switching element 1 is connect with the scan line 16 on the upside of pixel unit P,
The control terminal of second switch element 2 is connect with the scan line 16 on the downside of pixel unit P, the control terminal of second switch element 2
It is connect by a connecting line 5 with the scan line 16 on the downside of pixel unit P, the control terminal of second switch element 2 and connection
The making of line 5 is formed in same layer.However, the present invention is not limited thereto, in other embodiments, the control terminal of first switching element 1 and position
Scan line 16 on the downside of pixel unit P connects, the control terminal of second switch element 2 and the scanning on the upside of pixel unit P
Line 16 connects, and the control terminal of second switch element 2 is connected by a connecting line 5 and the scan line 16 on the downside of pixel unit P
It connects.
In the present embodiment, the control terminal of first switching element 1, the control terminal of third switch element 3 and the 4th switch member
The control terminal of part 4 is connected in same scan line 16.However, the present invention is not limited thereto, in other embodiments, first switch
The control terminal of the control terminal of element 1, the control terminal of third switch element 3 and the 4th switch element 4 can be respectively connected to and first
On any one of two scan lines 16 that 1 phase of switch element is closed on.
First embodiment of the invention also provides a kind of driving method of array substrate, and driving method includes：
In adjacent three scan lines Gn, Gn+1, Gn+2, in first time period t1, while make scan line Gn and scan line
Gn+1 is high level, is connect between scan line Gn and scan line Gn+1 with first switching element 1 and second switch element 2 each
Pixel unit P, which is opened and passed through multiple data lines 17, is filled with correct data voltage, between scan line Gn and scan line Gn+1
Each public electrode block 111 is filled with common voltage by a plurality of common wire 18；
In second time period t2, make scan line Gn for high level, scan line Gn+1 is low level, scan line Gn and scanning
The each pixel unit P being connect between line Gn+1 with first switching element 1 and second switch element 2 is closed, and scan line Gn is with sweeping
It retouches each pixel unit P being connect between line Gn+1 with third switch element 3 and opens and pass through multiple data lines 17 and be filled with correctly
Data voltage, each public electrode block 111 between scan line Gn and scan line Gn+1 is filled with public affairs by a plurality of common wire 18
Common voltage；
In third time period t 3, while scan line Gn+1 and scan line Gn+2 is made to be high level, scan line Gn+1 is with sweeping
The each pixel unit P connecting with first switching element 1 and second switch element 2 between line Gn+2 is retouched to open and pass through a plurality of number
Correct data voltage is filled with according to line 17, each public electrode block 111 between scan line Gn+1 and scan line Gn+2 is by more
Common wire 18 is filled with common voltage；
In the 4th time period t 4, make scan line Gn+1 for high level, scan line Gn+2 is low level, scan line Gn+1 with
The each pixel unit P being connect between scan line Gn+2 with first switching element 1 and second switch element 2 is closed, scan line Gn+
The each pixel unit P being connect between 1 and scan line Gn+2 with third switch element 3 is opened and is passed through multiple data lines 17 and is filled with
Correct data voltage, each public electrode block 111 between scan line Gn+1 and scan line Gn+2 pass through a plurality of common wire 18
It is filled with common voltage；
Wherein, n is the positive integer more than 1.
First embodiment of the invention also provides a kind of liquid crystal display device, as shown in figure 4, liquid crystal display device is included as above
The array substrate 10, the color membrane substrates 20 being oppositely arranged with array substrate 10 and positioned at array substrate 10 and color membrane substrates
Liquid crystal layer 30 between 20.
Color blocking layer 22, black matrix BM21 and entire auxiliary electricity are equipped on color membrane substrates 20 in the side towards liquid crystal layer 30
Pole 24.Color blocking layer 22 for example includes the color blocking material of three color of red, green, blue, is correspondingly formed the pixel list of three color of red, green, blue respectively
First P.Black matrix 21 is located between the pixel unit P of three color of red, green, blue, makes between adjacent pixel unit P through black matrix 21
It is spaced from each other.
In the present embodiment, the liquid crystal molecule in liquid crystal layer 30 is positive liquid crystal molecules, and it is fast that positive liquid crystal molecules have response
The advantages of.Such as Fig. 4, in original state (in the case of i.e. liquid crystal display device does not apply any voltage), liquid crystal layer 30 just
Property liquid crystal molecule the surface base of the lie low posture, the i.e. long axis direction of positive liquid crystal molecules and substrate substantially parallel with substrate is presented
This is parallel.But in practical applications, can have between the positive liquid crystal molecules in liquid crystal layer 30 and substrate smaller initial pre-
Inclination angle, the range of initial pre-tilt angle may be less than or equal to 10 degree, i.e.,：0°≦θ≦10°.
The present embodiment is applied to the auxiliary electrode 24 of color membrane substrates 20 and the public electrode 11 of array substrate 10 by control
On voltage signal, liquid crystal display device can be made to realize switching between wide viewing angle pattern and narrow viewing angle pattern.
Wide viewing angle pattern：It please join Fig. 4, the present embodiment is applied under wide viewing angle pattern to the auxiliary electrode 24 of color membrane substrates 20
Add auxiliary reference voltage Vref.As shown in Fig. 3, Fig. 6 a and Fig. 6 b, with G1 in figure ..., G5 represents multi-strip scanning line 16, with D1 and D2
The first data line 17 and the second data line 17 are represented respectively, the pixel unit of the first row odd positions is represented with A, and B is represented
The pixel unit of the first row even number position, C represent the pixel unit of the second row odd positions, and D represents the second row even number position
Pixel unit, and the four-stage to be charged with t1, t2, t3 and t4 signal pixel A to pixel D：
t1：Make scan line G1 and scan line G2 simultaneously for high level, between scan line G1 and scan line G2 with first switch
Each pixel unit A that element 1 and second switch element 2 connect, which is opened and passed through multiple data lines 17, is filled with correct data electricity
Pressure, each public electrode block 111 between scan line G1 and scan line G2 are filled with the first common voltage by a plurality of common wire 18
Vcom1 so that the voltage difference between each public electrode block 111 and auxiliary electrode 24 between scan line G1 and scan line G2 is small
In preset value (such as less than 0.5V)；
t2：Making scan line G1, scan line G2 is low level, is opened between scan line G1 and scan line G2 with first for high level
It closes each pixel unit A that element 1 and second switch element 2 connect to close, be opened between scan line G1 and scan line G2 with third
Close each pixel unit B that element 3 connects and open and pass through multiple data lines 17 and be filled with correct data voltage, scan line G1 and
Each public electrode block 111 between scan line G2 is filled with the first common voltage Vcom1 by a plurality of common wire 18 so that scanning
The voltage difference between each public electrode block 111 and auxiliary electrode 24 between line G1 and scan line G2 is less than preset value；
t3：Make scan line G2 and scan line G3 simultaneously for high level, between scan line G2 and scan line G3 with first switch
Each pixel unit C that element 1 and second switch element 2 connect, which is opened and passed through multiple data lines 17, is filled with correct data electricity
Pressure, each public electrode block 111 between scan line G2 and scan line G3 are filled with the second common voltage by a plurality of common wire 18
Vcom2 so that the voltage difference between each public electrode block 111 and auxiliary electrode 24 between scan line G2 and scan line G3 is small
In preset value；
t4：Making scan line G2, scan line G3 is low level, is opened between scan line G2 and scan line G3 with first for high level
It closes each pixel unit C that element 1 and second switch element 2 connect to close, be opened between scan line G2 and scan line G3 with third
Close each pixel unit D that element 3 connects and open and pass through multiple data lines 17 and be filled with correct data voltage, scan line G2 and
Each public electrode block 111 between scan line G3 is filled with the second common voltage Vcom2 by a plurality of common wire 18 so that scanning
The voltage difference between each public electrode block 111 and auxiliary electrode 24 between line G2 and scan line G3 is less than preset value.At this point,
Since the voltage difference between all public electrode blocks 111 and auxiliary electrode 24 is smaller, the inclination angle of liquid crystal molecule in liquid crystal layer 30
Degree hardly changes, and is maintained as the posture that lies low, therefore liquid crystal display device realizes that normal wide viewing angle is shown.Specifically
Ground, under wide viewing angle pattern, the first common voltage Vcom1 for being applied on odd column public electrode block 111 by common wire 18
It is straight with auxiliary reference voltage Vref constant amplitudes with the second common voltage Vcom2 applied on even column public electrode block 111
Galvanic electricity pressure, the auxiliary reference voltage Vref that auxiliary electrode 24 applies can be constant 0V, the electricity applied on every common wire 18
Pressure or constant 0V, the common voltage applied on public electrode block 111 each in this way with auxiliary reference voltage Vref
It is identical, it can realize preferable wide viewing angle effect.
Narrow viewing angle pattern：It please join Fig. 5, the present embodiment is applied under narrow viewing angle pattern to the auxiliary electrode 24 of color membrane substrates 20
Add auxiliary reference voltage Vref, specifically, the auxiliary reference voltage Vref that auxiliary electrode 24 applies can be constant 0V.Such as figure
3rd, shown in Fig. 7 a and Fig. 7 b, with G1, G2 in figure ..., G5 represents multi-strip scanning line 16, and the first data line is represented respectively with D1 and D2
17 and second data line 17, the pixel unit of the first row odd positions is represented with A, B represents the pixel of the first row even number position
Unit, C represent the pixel unit of the second row odd positions, and D represents the pixel unit of the second row even number position, and with t1, t2, t3
The four-stage to charge with t4 signals pixel A to pixel D：
t1：Make scan line G1 and scan line G2 simultaneously for high level, between scan line G1 and scan line G2 with first switch
Each pixel unit A that element 1 and second switch element 2 connect, which is opened and passed through multiple data lines 17, is filled with correct data electricity
Pressure, each public electrode block 111 between scan line G1 and scan line G2 are filled with the first common voltage by a plurality of common wire 18
Vcom1 so that the voltage between each public electrode block 111 and auxiliary electrode 24 between scan line G1 and scan line G2
Difference is more than preset value (such as larger than 2V)；
t2：Making scan line G1, scan line G2 is low level, is opened between scan line G1 and scan line G2 with first for high level
It closes each pixel unit A that element 1 and second switch element 2 connect to close, be opened between scan line G1 and scan line G2 with third
Close each pixel unit B that element 3 connects and open and pass through multiple data lines 17 and be filled with correct data voltage, scan line G1 and
Each public electrode block 111 between scan line G2 is filled with the first common voltage Vcom1 by a plurality of common wire 18 so that scanning
The voltage difference between each public electrode block 111 and auxiliary electrode 24 between line G2 and scan line G2 is more than preset value；
t3：Make scan line G2 and scan line G3 simultaneously for high level, between scan line G2 and scan line G3 with first switch
Each pixel unit C that element 1 and second switch element 2 connect, which is opened and passed through multiple data lines 17, is filled with correct data electricity
Pressure, each public electrode block 111 between scan line G2 and scan line G3 are filled with the second common voltage by a plurality of common wire 18
Vcom2 so that the voltage difference between each public electrode block 111 and auxiliary electrode 24 between scan line G2 and scan line G3 is big
In preset value；
t4：Making scan line G2, scan line G3 is low level, is opened between scan line G2 and scan line G3 with first for high level
It closes each pixel unit C that element 1 and second switch element 2 connect to close, be opened between scan line G2 and scan line G3 with third
Close each pixel unit D that element 3 connects and open and pass through multiple data lines 17 and be filled with correct data voltage, scan line G2 and
Each public electrode block 111 between scan line G3 is filled with the second common voltage Vcom2 by a plurality of common wire 18 so that scanning
The voltage difference between each public electrode block 111 and auxiliary electrode 24 between line G2 and scan line G3 is more than preset value.
Since the voltage difference between all public electrode blocks 111 and auxiliary electrode 24 is larger, in array base in liquid crystal cell
Stronger vertical electric field E (as shown by the arrows in Figure 5) can be generated between plate 10 and color membrane substrates 20, since positive liquid crystal molecules exist
It will be rotated under electric field action along the direction for being parallel to electric field line, therefore positive liquid crystal molecules will hair under vertical electric field E effects
Raw deflection, makes the angle of inclination between liquid crystal molecule and substrate increase and tilt, and liquid crystal molecule is from the posture changing that lies low to tilt
Posture makes liquid crystal display device wide-angle observation light leakage occur, is reduced in strabismus Direction Contrast and visual angle narrows, liquid crystal display
Device finally realizes that narrow viewing angle is shown.Specifically, under narrow viewing angle pattern, by common wire 18 to odd column public electrode block
The the first common voltage Vcom1 applied on 111 and the second common voltage Vcom2 applied on even column public electrode block 111 are equal
For alternating voltage and the two polarity on the contrary, and the polarity of the first common voltage Vcom1 and the second common voltage Vcom2 reversion per frame
Once, the double-point inversion driving of liquid crystal display device can be realized.
In the present embodiment, width visual angle is realized by the voltage for the public electrode block 111 for manipulating array substrate 10 side
Switching, and additionally increase common wire 18 and switch element, by data line 17 and common wire 18 to the pixel in pixel unit P
Electrode 13 and public electrode block 111 synchronize charge, each charged good pixel unit P and pixel unit to be charged
Not by voltage coupling influence between P, can effectively reduce signal coupling, so as to solve the pixel of different location in panel due to by
To uneven (Mura) problem of picture display of the inconsistent generation of coupling influence of signal, display image quality is improved.Therefore, liquid crystal
The frame frequency of showing device can maintain the low frequency of 60Hz, advantageously reduce power consumption, and the charging time and charging for increasing pixel imitate
Fruit.
[second embodiment]
It please join Fig. 8 and Fig. 9, the liquid crystal display device that second embodiment of the invention provides and the difference of above-mentioned first embodiment
It is, the liquid crystal layer 30 in the present embodiment uses negative liquid crystal molecule.With technological progress, the performance of negative liquid crystal obtains significantly
It improves, using also more extensive.In the present embodiment, as shown in figure 8, (i.e. liquid crystal display device does not apply any in original state
In the case of voltage), the negative liquid crystal molecule in liquid crystal layer 30 has larger initial pre-tilt angle, i.e. negativity liquid relative to substrate
Brilliant molecule is in original state relative to the inclined posture of substrate.
Narrow viewing angle pattern：It please join Fig. 8, the present embodiment is applied under narrow viewing angle pattern to the auxiliary electrode 24 of color membrane substrates 20
Add auxiliary reference voltage Vref, opposite auxiliary is applied by each public electrode block 111 of the common wire 18 in array substrate 10
Reference voltage Vref has the common voltage compared with small pressure difference, makes the voltage between all public electrode blocks 111 and auxiliary electrode 24
Difference is less than preset value (such as less than 0.5V).At this point, due to the voltage difference between all public electrode blocks 111 and auxiliary electrode 24 compared with
Small, the angle of inclination of liquid crystal molecule hardly changes in liquid crystal layer 30, is maintained as lateral attitude, makes liquid crystal display device
There is wide-angle observation light leakage, reduced in strabismus Direction Contrast and visual angle narrows, liquid crystal display device realizes narrow viewing angle at this time
Display.
Specifically, under narrow viewing angle pattern, the auxiliary reference voltage Vref that auxiliary electrode 24 applies can be constant 0V,
The voltage applied on every common wire 18 may be constant 0V so that each public electrode block 111 and auxiliary electrode 24 it
Between voltage difference be zero, can realize preferable narrow viewing angle effect.
Wide viewing angle pattern：It please join Fig. 9, the present embodiment is applied under narrow viewing angle pattern to the auxiliary electrode 24 of color membrane substrates 20
Add auxiliary reference voltage Vref, opposite auxiliary is applied by each public electrode block 111 of the common wire 18 in array substrate 10
Reference voltage Vref has the common voltage of larger pressure difference, makes the voltage between all public electrode blocks 111 and auxiliary electrode 24
Difference is more than preset value (such as larger than 2V).At this point, due to the voltage difference between all public electrode blocks 111 and auxiliary electrode 24 compared with
Greatly, stronger vertical electric field E (arrow institutes in such as Fig. 9 can be generated between array substrate 10 and color membrane substrates 20 in liquid crystal cell
Show), since negative liquid crystal molecule will deflect under electric field action along perpendicular to the direction of electric field line, negative liquid crystal molecule
It deflects under vertical electric field E effects, reduces the angle of inclination between liquid crystal molecule and substrate, the liquid crystal display device
Wide-angle light leakage phenomena occur can accordingly be reduced, and improved in strabismus Direction Contrast and visual angle increases, the liquid crystal display device is most
Realize that wide viewing angle is shown eventually.
Remaining structure and operation principle of the present embodiment may refer to above-mentioned first embodiment, and which is not described herein again.
The above embodiment is the embodiment of the present invention, is not intended to limit implementation and the interest field of the present invention, all
The equivalence changes and modification that the content described in the apllied protection domain of patent is made according to the present invention, should all be included in this hair
In bright scope of patent protection.
Claims (10)
1. a kind of array substrate, which is equipped with multi-strip scanning line (16) and multiple data lines (17) and multiple pictures
Plain electrode (13), which is characterized in that be additionally provided with a plurality of common wire (18) and public electrode (11) in the array substrate (10), this is more
Common wire (18) and the multiple data lines (17) are extended in the same direction and are arranged alternately with each other, the multi-strip scanning line (16) with
The multiple data lines (17) and a plurality of common wire (18) insulation, which intersect to limit, forms multiple pixel units (P)；The common electrical
Public electrode block (111) of the pole (11) including multiple array distributions and mutually insulated, each public electrode block (111) is along scan line
(16) direction covers two adjacent pixel units (P) simultaneously, on scan-line direction two neighboring pixel unit (P) for one group at this
Array arrangement in array substrate (10), the pixel electrode in one of pixel unit (P) of every group of pixel unit (P)
(13) by the first switching element of series connection (1) and second switch element (2) with positioned at the pixel unit (P) up and down both sides two
Scan line (16) and the first switching element (1) of the series connection and data line (17) connection of second switch element (2) are closed on,
Pixel electrode (13) in other in which pixel unit (P) by third switch element (3) and closes on the third switch element
(3) scan line (16) and data line (17) connection, each public electrode block (111) is by the 4th switch element (4) with closing on
Scan line (16) and common wire (18) connection of 4th switch element (4).
2. array substrate according to claim 1, which is characterized in that the control terminal of the first switching element (1) is with being located at
The pixel unit (P) one of two scan lines (16) of both sides connection up and down, the control terminal of the second switch element (2)
With wherein another connection of two scan lines (16), the one of conducting end and data line of the first switching element (1)
(17) it connects, one of conducting end of the second switch element (2) is connect with pixel electrode (13), the first switching element
(1) another conducting end is connect with another conducting end of the second switch element (2).
3. array substrate according to claim 2, which is characterized in that the control terminal of the first switching element (1) is with being located at
Scan line (16) connection on the upside of the pixel unit (P), the control terminal of the second switch element (2) is with being located at the pixel unit
(P) scan line (16) connection on the downside of.
4. array substrate according to claim 3, which is characterized in that the control terminal of the second switch element (2) passes through one
Connecting line (5) is connect with the scan line (16) on the downside of the pixel unit (P).
5. array substrate according to claim 3, which is characterized in that control terminal, third of the first switching element (1)
The control terminal of switch element (3) and the control terminal of the 4th switch element (4) are connected in same scan line (16).
6. a kind of driving method for driving such as array substrate described in any one of claim 1 to 5, which is characterized in that should
Driving method includes：
In adjacent three scan lines Gn, Gn+1, Gn+2, in first time period t1, while make scan line Gn and scan line Gn+1
It is connect for high level, between scan line Gn and scan line Gn+1 with first switching element (1) and second switch element (2) each
Pixel unit (P), which is opened and passes through the multiple data lines (17), is filled with correct data voltage, scan line Gn and scan line Gn+1
Between each public electrode block (111) common voltage is filled with by a plurality of common wire (18)；
In second time period t2, make scan line Gn for high level, scan line Gn+1 is low level, scan line Gn and scan line Gn
Each pixel unit (P) for being connect between+1 with first switching element (1) and second switch element (2) is closed, scan line Gn with
The each pixel unit (P) being connect between scan line Gn+1 with third switch element (3) is opened and passes through the multiple data lines
(17) correct data voltage is filled with, each public electrode block (111) between scan line Gn and scan line Gn+1 is more by this
Common wire (18) is filled with common voltage；
In third time period t 3, while scan line Gn+1 and scan line Gn+2 is made to be high level, scan line Gn+1 and scan line
Each pixel unit (P) for being connect between Gn+2 with first switching element (1) and second switch element (2) is opened and to pass through this more
Data line (17) is filled with correct data voltage, each public electrode block between scan line Gn+1 and scan line Gn+2
(111) common voltage is filled with by a plurality of common wire (18)；
In the 4th time period t 4, make scan line Gn+1 for high level, scan line Gn+2 is low level, scan line Gn+1 and scanning
The each pixel unit (P) being connect between line Gn+2 with first switching element (1) and second switch element (2) is closed, scan line
The each pixel unit (P) being connect between Gn+1 and scan line Gn+2 with third switch element (3) is opened and passes through a plurality of number
Correct data voltage is filled with according to line (17), each public electrode block (111) between scan line Gn+1 and scan line Gn+2 is logical
It crosses a plurality of common wire (18) and is filled with common voltage；
Wherein, n is the positive integer more than 1.
7. a kind of liquid crystal display device, which is characterized in that including array substrate (10) such as described in any one of claim 1 to 5,
The color membrane substrates (20) that are oppositely arranged with the array substrate (10) and positioned at the array substrate (10) and the color membrane substrates (20)
Between liquid crystal layer (30), the color membrane substrates (20) be equipped with auxiliary electrode (24).
A kind of 8. driving method for being used to drive liquid crystal display device as claimed in claim 7, which is characterized in that the driving side
Method includes：
Under the first field-of-view mode, apply auxiliary reference voltage (Vref) to the auxiliary electrode (24), pass through common wire (18)
Apply the opposite auxiliary reference voltage (Vref) with the common voltage compared with small pressure difference to each public electrode block (111), make institute
There is the voltage difference between public electrode block (111) and the auxiliary electrode (24) to be less than preset value；
Under second of field-of-view mode, apply auxiliary reference voltage (Vref) to the auxiliary electrode (24), pass through common wire (18)
Applying the opposite auxiliary reference voltage (Vref) to each public electrode block (111) has the common voltage of larger pressure difference, makes institute
There is the voltage difference between public electrode block (111) and the auxiliary electrode (24) to be more than preset value.
9. driving method according to claim 8, which is characterized in that by common wire (18) to each public electrode block
(111) when applying common voltage, it is public to apply first to the common wire (18) for being located at odd positions on scan line (16) direction
Voltage (Vcom1) applies the second common voltage to the common wire (18) put on scan line (16) direction positioned at even bit
(Vcom2), under the first field-of-view mode, first common voltage (Vcom1) and the second common voltage (Vcom2) are auxiliary with this
The DC voltage of reference voltage (Vref) constant amplitude is helped, under second of field-of-view mode, first common voltage (Vcom1) and second
Common voltage (Vcom2) is alternating voltage and the two polarity is opposite.
10. driving method according to claim 8, which is characterized in that the liquid crystal layer (30), should using positive liquid crystal molecules
The first field-of-view mode is wide viewing angle pattern, which is narrow viewing angle pattern；Alternatively, the liquid crystal layer (30) uses
Negative liquid crystal molecule, the first field-of-view mode are narrow viewing angle pattern, which is wide viewing angle pattern.
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