CN109188816A - 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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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 105
- 239000000758 substrate Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000012528 membrane Substances 0.000 claims description 16
- 230000000007 visual effect Effects 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 21
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- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
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- 238000004088 simulation Methods 0.000 description 3
- 208000004350 Strabismus Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The present invention discloses a kind of array substrate and its driving method and liquid crystal display device and its driving method, array substrate is equipped with multi-strip scanning line and multiple data lines and multiple pixel units, it is additionally provided with a plurality of common wire and multiple public electrode blocks, each public electrode block covers two adjacent pixel units simultaneously, pixel electrode in first pixel unit is connect by first switching element and second switch the element scan line and a data line adjacent with two, the control terminal of first switching element is connect with a wherein scan line, a wherein conducting end for first switching element is connect with another scan line, another conducting end of first switching element is connect with the control terminal of second switch element, two conducting ends of second switch element are connect with pixel electrode and data line respectively, pixel electrode in second pixel unit passes through third switch element It is connect 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 closed on.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of array substrate and its driving method and liquid crystal displays
Device and its driving method.
Background technique
Liquid crystal display device (liquid crystal display, LCD) has good, small in size, light-weight, the low drive of image quality
Dynamic voltage, low-power consumption, radiationless and relatively low manufacturing cost advantage, occupy an leading position in flat display field.With liquid
Brilliant display technology is constantly progressive, and the visible angle of display is widened via original 120 ° or so to 160 ° or more, people
While visual experience is brought at the big visual angle of enjoyment, it is also desirable to effective protection trade secret and individual privacy, to avoid screen letter
Breath leak and caused by business loss or embarrassment.Therefore other than wide viewing angle, it is also necessary to which display device can switch to narrow view
Angle.
Recently, industry starts to propose to apply using the viewing angle control electrode of the side colored filter substrate (CF) to liquid crystal molecule
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 210, under
Substrate 220 and the liquid crystal layer 230 between upper substrate 210 and lower substrate 220, upper substrate 210 are equipped with viewing angle control electrode
211.As shown in Figure 1, the viewing angle control electrode 211 on upper substrate 210 does not give voltage, liquid crystal display dress in wide viewing angle display
It sets and realizes that wide viewing angle is shown.As shown in Fig. 2, the viewing angle control electrode 211 on upper substrate 210 is given when needing narrow viewing angle to show
Voltage, the liquid crystal molecule in liquid crystal layer 230 can tilt, liquid crystal display because of vertical direction electric field E (as shown by the arrows in Figure 2)
Device contrast reduction because of light leakage, it is final to realize that narrow viewing angle is shown.
And in existing display device, although realizing width view angle switch, it will appear display unevenness (band
Mura) the problem of, reason arrange such as: in narrow viewing angle display, added voltage is generally alternating voltage on viewing angle control electrode.
Since viewing angle control electrode is entire plane electrode, there are capacitive coupling influence between scan line meeting and viewing angle control electrode,
When being opened next horizontal scanning line, the signal on viewing angle control electrode is coupled once, leads to different location in panel
Pixel is inconsistent by the coupling influence of signal, leads to film flicker, the uneven problem of display occurs；
Because adjacent two sub-pixels can be by the thin of different number in the display device that existing width visual angle can be switched
Film transistor (TFT) control, for example, one of sub-pixel in two neighboring sub-pixel by two TFT series controls, i.e., should
The pixel electrode of sub-pixel is connected to data line to be needed by two TFT (two channels), the pixel electrode of another sub-pixel
It is connected to and is needed by a TFT (channel) with data line, since the pixel electrode and data line of two neighboring sub-pixel connect
The logical TFT needed by different number leads to the uneven problem of display occur.
Summary of the invention
In order to overcome shortcoming and defect existing 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 are connected with solving pixel electrode and the data line of two neighboring sub-pixel
The logical TFT needed by different number leads to the uneven problem of display occur.
The present invention provides a kind of array substrate, which is equipped with multi-strip scanning line and multiple data lines and multiple pictures
Plain unit, each pixel unit is interior to be equipped with pixel electrode, is additionally provided with a plurality of common wire and multiple common electricals in the array substrate
Pole block, multiple public electrode blocks are arranged in array and mutually insulated is spaced apart, and each public electrode block is along the scan line side
To two adjacent pixel units are covered simultaneously, two adjacent pixel units include the first pixel unit and the second pixel
Unit, the pixel electrode in first pixel unit pass through this adjacent with two of first switching element and second switch element
Scan line and the connection of data line, the control terminal of the first switching element and wherein one in two adjacent scan lines
The connection of scan line, one of conducting end of the first switching element and another scanning in two adjacent scan lines
Line connection, another conducting end of the first switching element are connect with the control terminal of the second switch element, second switch member
One of conducting end of part is connect with the pixel electrode, another conducting end of the second switch element and the data line connect
It connects, the pixel electrode in second pixel unit passes through third switch element and the scan line for closing on the third switch element
And data line connection, each public electrode block pass through the 4th switch element and the scan line for closing on the 4th switch element
And common wire connection.
Further, the pixel electrode in first pixel unit of every a line pixel unit passes through the first switch
Element and the second switch element are connect with two of two sides scan lines above and below the pixel unit for being located at current row.
Further, the pixel electrode in first pixel unit of every a line pixel unit passes through the first switch
Element and the second switch element are connect with two of two sides scan lines above and below the pixel unit for being located at next line.
Further, a plurality of common wire and a plurality of data line extend in the same direction, a plurality of common wire and a plurality of
The data line is alternately arranged in the scanning line direction, and one is spaced between every two the adjacent data lines and the common wire and arranges this
The width of pixel unit.
Further, a plurality of common wire and a plurality of data line extend in the same direction, and each public electrode block covers
Two adjacent pixel units of lid are one group, and the two adjacent groups pixel unit is a repetition week in the scanning line direction
Phase is arranged, and the two adjacent groups pixel unit is connected with two data lines and two common wires, wherein every data
Line is arranged between two adjacent pixel units in each group, and two common wires are arranged in the two adjacent groups pixel list
Between member and mutually adjoin setting side by side.
Further, a plurality of common wire and a plurality of data line extend in the same direction, and each public electrode block covers
Two adjacent pixel units of lid are one group, and adjacent three groups of pixel units are a repetition week in the scanning line direction
Phase is arranged, and adjacent three groups of pixel units are connected with three data lines and three common wires, wherein every data
Line is arranged between two adjacent pixel units in each group, and the two of them common wire in three common wires is set
It sets between the two adjacent groups pixel unit and mutually adjoins setting side by side, another common wire in three common wires is set
It sets in the side of another group of pixel unit.
The present invention also provides a kind of for driving the driving method of array substrate as described above, which includes:
In two adjacent scan lines Gn, Gn+1, in first time period t1, make scan line Gn and scan line Gn+1 simultaneously
For high level, the first switching element and the second switch element are opened simultaneously, which passes through the data line charge
Enter correct data voltage, which opens, which is filled with the data electricity of first pixel unit
Pressure；
In second time period t2, make scan line Gn high level, makes scan line Gn+1 low level, first switch member
Part is opened, which closes, and the data voltage in first pixel unit is kept, which beats
It opens, which is filled with correct data voltage by the data line；
Wherein, n is the positive integer greater than 0.
The present invention also provides a kind of liquid crystal display device, including it is array substrate as described above, opposite with the array substrate
The color membrane substrates of setting and the liquid crystal layer between the array substrate and the color membrane substrates, the color membrane substrates are equipped with auxiliary
Electrode.
The present invention also provides a kind of for driving the driving method of liquid crystal display device as described above, the driving method packet
It includes:
Under the first field-of-view mode, apply auxiliary reference voltage to the auxiliary electrode, is somebody's turn to do by the common wire to each
Public electrode block applies the opposite auxiliary reference voltage with the common voltage compared with small pressure difference, makes all public electrode blocks and is somebody's turn to do
Voltage difference between auxiliary electrode is less than preset value；
Under second of field-of-view mode, apply auxiliary reference voltage to the auxiliary electrode, is somebody's turn to do by the common wire to each
Public electrode block applies the common voltage that the opposite auxiliary reference voltage has larger pressure difference, makes all public electrode blocks and is somebody's turn to do
Voltage difference between auxiliary electrode is greater than preset value.
Further, when applying common voltage to each public electrode block by the common wire, in the scan line side
Apply the first common voltage positioned at the common wire of odd positions upwards, is somebody's turn to do in the scanning line direction positioned at what even bit was set
Common wire applies the second common voltage, under the first field-of-view mode, first common voltage and second common voltage for
The DC voltage of the amplitudes such as the auxiliary reference voltage, under second of field-of-view mode, first common voltage and this is second public
Voltage is opposite for the alternating voltage and the two polarity of below-center offset on the opposite auxiliary reference voltage；
The liquid crystal layer uses positive liquid crystal molecules, which is wide viewing angle mode, second of visual angle mould
Formula is narrow viewing angle mode；Alternatively, the liquid crystal layer uses negative liquid crystal molecule, which is narrow viewing angle mode, should
Second of field-of-view mode is wide viewing angle mode.
The beneficial effects of the invention are that: by array substrate be equipped with a plurality of common wire and multiple public electrode blocks, first
Pixel electrode in pixel unit passes through first switching element and second switch element and two adjacent scan lines and a number
It is connected according to line, and the control terminal of first switching element is connect with a wherein scan line, wherein the one of first switching element
Conducting end is connect with another scan line, and another conducting end of first switching element is connect with the control terminal of second switch element,
One of conducting end of second switch element is connect with pixel electrode, another conducting end and data line of second switch element
It connects, the pixel electrode in the second pixel unit passes through third switch element and the scan line and data of closing on third switch element
Line connection, each public electrode block are connect by the 4th switch element with the scan line and common wire for closing on the 4th switch element,
So that all pixels unit controls width visual angle by independent public electrode block, signal coupling is effectively reduced, and all
Pixel electrode be connected to and only needed by a TFT channel with data line, to solve the problems, such as that display is uneven, improve display
Image quality.
Detailed description of the invention
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 electrical block diagram of liquid crystal display device in the embodiment of the present invention one；
Fig. 4 is the electrical block diagram of liquid crystal display device partial enlargement in Fig. 3；
Fig. 5 is that liquid crystal display device uses positive liquid crystal molecules in the schematic partial cross-sectional view of wide viewing angle in the present invention；
Fig. 6 is that liquid crystal display device uses positive liquid crystal molecules in the schematic partial cross-sectional view of narrow viewing angle in the present invention；
Fig. 7 be in the present invention liquid crystal display device in the drive waveforms schematic diagram of the first visual angle nth frame；
Fig. 8 be in the present invention liquid crystal display device in the drive waveforms schematic diagram of the first visual angle N+1 frame；
Fig. 9 be in the present invention liquid crystal display device in the drive waveforms schematic diagram of the second visual angle nth frame；
Figure 10 be in the present invention liquid crystal display device in the drive waveforms schematic diagram of the second visual angle N+1 frame；
Figure 11 is the electrical block diagram of liquid crystal display device in the embodiment of the present invention two；
Figure 12 is the electrical block diagram of liquid crystal display device partial enlargement in Figure 11；
Figure 13 is the electrical block diagram of liquid crystal display device in the embodiment of the present invention three；
Figure 14 is the electrical block diagram of liquid crystal display device in the embodiment of the present invention four；
Figure 15 is the electrical block diagram of liquid crystal display device in the embodiment of the present invention five；
Figure 16 is the effect simulation schematic diagram of liquid crystal display device in Figure 13；
Figure 17 is the effect simulation schematic diagram of liquid crystal display device in Figure 15；
Figure 18 is the electrical block diagram of liquid crystal display device in the embodiment of the present invention six；
Figure 19 is that liquid crystal display device uses negative liquid crystal molecule in the partial cross section of narrow viewing angle in the embodiment of the present invention seven
Schematic diagram；
Figure 20 is that liquid crystal display device uses negative liquid crystal molecule in the partial cross section of wide viewing angle in the embodiment of the present invention seven
Schematic diagram；
Figure 21 is one of the planar structure schematic diagram of liquid crystal display device in the present invention；
Figure 22 is two of the planar structure schematic diagram of liquid crystal display device in the present invention.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to array substrate proposed according to the present invention and its driving method and liquid crystal display device and its driving
Specific embodiment, structure, feature and its effect of method, detailed description are as follows:
[embodiment one]
As shown in Figure 3 and Figure 4, the embodiment of the present invention one provides a kind of array substrate, which is equipped with a plurality of
Scan line 14 and multiple data lines 15, multiple data lines 15 and a plurality of common wire 16 extend in the same direction, a plurality of common wire 16
It is alternately arranged on 14 direction of scan line with multiple data lines 15, is spaced between every two adjacent data lines 15 and common wire 16
The width of one column pixel unit P, by multi-strip scanning line 14 and 16 phase of multiple data lines 15 and a plurality of common wire in array substrate 10
Mutually insulation, which intersects to limit, forms multiple pixel unit P, and pixel electrode 13 is equipped in each pixel unit P.
Multiple public electrode blocks 11 in array distribution and mutually insulated, each public electrode are additionally provided in array substrate 10
Block 11 covers two adjacent pixel unit P along 14 direction of scan line simultaneously, and two adjacent pixel unit P include the first pixel
Unit P1 and the second pixel unit P2, in the present embodiment, public electrode block 11 and pixel electrode 13 are located at different layers and by absolutely
Edge layer 12 (Fig. 5) is mutually isolated.
Pixel electrode 13 in first pixel unit P1 passes through first switching element 1 and second switch element 2 and two phases
Adjacent scan line 14 and a data line 15 connects, in the control terminal of first switching element 1 and two adjacent scan lines 14
Wherein scan line 14 connects, one of conducting end of first switching element 1 with it is another in two adjacent scan lines 14
One scan line 14 connects, another conducting end of first switching element 1 is connect with the control terminal of second switch element 2, and second
One of conducting end of switch element 2 is connect with pixel electrode 13, another conducting end and data line of second switch element 2
15 connect, and the pixel electrode 13 in the second pixel unit P2 passes through third switch element 3 and the scanning for closing on third switch element 3
Line 14 and data line 15 connect, and each public electrode block 11 passes through the 4th switch element 4 and closes on the scanning of the 4th switch element 4
Line 14 and common wire 16 connect, first switching element 1, second switch element 2, third switch element the 3, the 4th in the present embodiment
Switch element 4 is thin film transistor (TFT) (TFT).
Further, the pixel electrode 13 in the first pixel unit P1 of every one-row pixels unit P passes through first switch member
Part 1 and second switch element 2 are connect with two scan lines 14 for being located at the two sides current row pixel unit P or more, in the present embodiment,
Control terminal, the control terminal of third switch element 3, the control terminal of the 4th switch element 4 of first switching element 1 are connected to and are located at
In scan line 14 on the upside of current row pixel unit P, the control terminal of second switch element 2 and first switching element 1 one of them
Another conducting end of conducting end connection, first switching element 1 by a connecting line and is located on the downside of current row pixel unit P
Scan line 14 connects.
The embodiment of the present invention one also provides a kind of driving method of array substrate, and driving method includes:
In two adjacent scan lines Gn, Gn+1, in first time period t1, make scan line Gn and scan line Gn+1 simultaneously
For high level, first switching element 1 and second switch element 2 are opened simultaneously, and the first pixel unit P1 is filled with by data line 15
Correct data voltage, third switch element 3 are opened, and the second pixel unit P2 is filled with the data voltage of the first pixel unit P1；
In second time period t2, make scan line Gn high level, makes scan line Gn+1 low level, first switching element
1 opens, and second switch element 2 is closed, and the data voltage in the first pixel unit P1 is kept, and third switch element 3 is opened,
Second pixel unit P2 is filled with correct data voltage by data line 15；Wherein, n is the positive integer greater than 0.
The embodiment of the present invention one also provides a kind of liquid crystal display device, as shown in Figure 5 and Figure 6, including battle array as described above
Color membrane substrates 20 that column substrate 10 and array substrate 10 are oppositely arranged and between array substrate 10 and color membrane substrates 20
Liquid crystal layer 30.
Color blocking layer 22, black matrix (BM) 21,23 and of flatness layer are equipped in the side towards liquid crystal layer 30 on color membrane substrates 20
The auxiliary electrode 24 of whole face setting.Color blocking layer 22 for example including red (R), green (G), blue (B) three color color blocking material, respectively correspond
Form the pixel unit P of red (R), green (G), blue (B) three color.Black matrix 21 is located at the pixel of red (R), green (G), blue (B) three color
Between unit P, make to be spaced from each other between adjacent pixel unit P by black matrix 21.
In the present embodiment, the liquid crystal molecule in liquid crystal layer 30 is positive liquid crystal molecules, and positive liquid crystal molecules have response
Fast advantage.Such as Fig. 5, the lie low appearance substantially parallel with substrate is presented in the positive liquid crystal molecules in original state, liquid crystal layer 30
State, the i.e. long axis direction of positive liquid crystal molecules and the surface of substrate are substantially parallel.But in practical applications, in liquid crystal layer 30 just
It can have lesser initial pre-tilt angle between property liquid crystal molecule and substrate, the range of initial pre-tilt angle may be less than or be equal to
10 °, it may be assumed that 0 ° -10 °.
The present embodiment is applied to the auxiliary electrode 24 of color membrane substrates 20 and the public electrode block of array substrate 10 by control
Voltage signal on 11 can make liquid crystal display device realize switching between wide viewing angle mode and narrow viewing angle mode.
Under wide viewing angle mode: Fig. 5, Fig. 7 and Fig. 8 please be join, the present embodiment is under wide viewing angle mode, to color membrane substrates 20
Auxiliary electrode 24 applies auxiliary reference voltage Vref, applies opposite auxiliary reference to each public electrode block 11 by common wire 16
Voltage Vref has the common voltage compared with small pressure difference, is less than the voltage difference between all public electrode blocks 11 and auxiliary electrode 24
Preset value (such as less than 0.5V)；
At this point, since the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 is smaller, liquid crystal in liquid crystal layer 30
The tilt angle of molecule hardly happens variation, is maintained as lying posture, therefore liquid crystal display device realizes normal wide view
Angle is shown.Specifically, under wide viewing angle mode, applied by common wire 16 on odd column public electrode block 11 first public
Voltage Vcom1 and the second common voltage Vcom2 applied on even column public electrode block 11 be and auxiliary reference voltage Vref
Etc. amplitudes DC voltage, auxiliary electrode 24 apply auxiliary reference voltage Vref can be constant 0V, every common wire 16
The voltage of upper application may be constant 0V, and the common voltage applied on public electrode block 11 each in this way is and auxiliary reference
Voltage Vref is identical, and preferable wide viewing angle effect may be implemented.
Under narrow viewing angle mode: Fig. 6, Fig. 9 and Figure 10 please be join, the present embodiment is under narrow viewing angle mode, to color membrane substrates 20
Auxiliary electrode 24 apply auxiliary reference voltage Vref, opposite auxiliary ginseng is applied to each public electrode block 11 by common wire 16
The common voltage that voltage Vref has larger pressure difference is examined, keeps the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 big
In preset value (such as larger than 2V)；
At this point, since the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 is larger, in battle array in liquid crystal cell
Stronger vertical electric field E2 (as shown by the arrows in Figure 6) can be generated between column substrate 10 and color membrane substrates 20, due to positivity liquid crystal
Molecule will rotate under electric field action along the direction for being parallel to electric field line, therefore positive liquid crystal molecules are acted in vertical electric field E2
Under will deflect, so that tilt angle between liquid crystal molecule and substrate is increased and is tilted, liquid crystal molecule is from lying posture transformation
For lateral attitude, liquid crystal display device is made wide-angle observation light leakage occur, is reduced in strabismus Direction Contrast and visual angle narrows, liquid
Crystal device finally realizes that narrow viewing angle is shown.Specifically, under narrow viewing angle mode, by common wire 16 to odd column common electrical
The the second common voltage Vcom2 applied on the first common voltage Vcom1 and even column public electrode block 11 applied on pole block 11
Be alternating voltage and the two polarity on the contrary, and the first common voltage Vcom1 and the second common voltage Vcom2 the every frame of polarity it is anti-
Turn primary, the double-point inversion driving of liquid crystal display device may be implemented.In the present embodiment, pass through manipulation 10 side of array substrate
The voltage of public electrode block 11 realizes width view angle switch so that all pixels unit by independent public electrode block 11
Width visual angle is controlled, signal coupling is effectively reduced and all pixel electrodes are connected to data line and only need by a TFT
Channel improves display image quality, and advantageously reduce power consumption, increases filling for pixel to solve the problems, such as that picture display is uneven
Electric time and charging effect.
[embodiment two]
As is illustrated by figs. 11 and 12, a kind of array substrate provided by Embodiment 2 of the present invention and embodiment one (Fig. 3 and Fig. 4)
In array substrate it is essentially identical, the difference is that, in the present embodiment, the first pixel unit of every one-row pixels unit P
Pixel electrode 13 in P1 by first switching element 1 and second switch element 2 and is located at the two sides next line pixel unit P or more
Two scan lines 14 connection.
Specifically, the pixel electrode 13 in the first pixel unit P1 of current row pixel unit P passes through 1 He of first switching element
Second switch element 2 is connect with two scan lines 14 for being located at the two sides next line pixel unit P or more, in the present embodiment, the
Control terminal, the control terminal of third switch element 3, the control terminal of the 4th switch element 4 of one switch element 1 are connected under being located at
In scan line 14 (G1 in Figure 11) on the upside of one-row pixels unit P, the control terminal and first switching element 1 of second switch element 2
The connection of one of conducting end, another conducting end of first switching element 1 by a connecting line be located at next line picture
Scan line 14 (G2 in Figure 11) connection on the downside of plain unit P.
Those skilled in the art it should be understood that remaining structure and working principle of the present embodiment and embodiment
One is identical, and which is not described herein again.
[embodiment three]
As shown in figure 13, the battle array in a kind of array substrate and embodiment one (Fig. 3 and Fig. 4) that the embodiment of the present invention three provides
Column substrate is essentially identical, the difference is that, in the present embodiment, a plurality of common wire 16 and multiple data lines 15 are in same direction
Extend, two adjacent pixel unit P that each public electrode block 11 covers are one group, the two adjacent groups on 14 direction of scan line
Pixel unit P is to be arranged a repetition period, and two adjacent groups pixel unit P is connected with two data lines 15 and two public
Line 16, wherein every data line 15 is arranged between two adjacent pixel unit P in each group, two common wires 16 are arranged
Between two adjacent groups pixel unit P and mutually adjoin setting side by side.
Those skilled in the art it should be understood that remaining structure and working principle of the present embodiment and embodiment
One is identical, and which is not described herein again.
[example IV]
As shown in figure 14, the array base in a kind of array substrate and embodiment three (Figure 13) that the embodiment of the present invention four provides
Plate is essentially identical, the difference is that, in the present embodiment, the pixel in the first pixel unit P1 of every one-row pixels unit P
Electrode 13 is by first switching element 1 and second switch element 2 and positioned at two scannings of the two sides next line pixel unit P or more
Line 14 connects.
Specifically, the pixel electrode 13 in the first pixel unit P1 of current row pixel unit P passes through 1 He of first switching element
Second switch element 2 is connect with two scan lines 14 for being located at the two sides next line pixel unit P or more, in the present embodiment, the
Control terminal, the control terminal of third switch element 3, the control terminal of the 4th switch element 4 of one switch element 1 are connected under being located at
In scan line 14 (G1 in Figure 14) on the upside of one-row pixels unit P, the control terminal and first switching element 1 of second switch element 2
The connection of one of conducting end, another conducting end of first switching element 1 by a connecting line be located at next line picture
Scan line 14 (G2 in Figure 14) connection on the downside of plain unit P.
Those skilled in the art it should be understood that remaining structure and working principle of the present embodiment and embodiment
Three is identical, and which is not described herein again.
[embodiment five]
As shown in figure 15, the array base in a kind of array substrate and embodiment three (Figure 13) that the embodiment of the present invention five provides
Plate is essentially identical, the difference is that, in the present embodiment, a plurality of common wire 16 and multiple data lines 15 are prolonged in same direction
It stretches, two adjacent pixel unit P that each public electrode block 11 covers are one group, adjacent three groups of pictures on 14 direction of scan line
Plain unit P is to be arranged a repetition period, and adjacent three groups of pixel unit P are connected with three data lines 15 and three common wires
16, wherein every data line 15 is arranged between two adjacent pixel unit P in each group, its in three common wires 16
In two common wires 16 be arranged between two adjacent groups pixel unit P and mutually adjoin side by side setting, in three common wires 16
The side of another group of pixel unit P is arranged in another common wire 16.
It please refers to shown in Figure 16 and Figure 17, Figure 16 is the effect mould of liquid crystal display device in the embodiment of the present invention three (Figure 13)
Quasi- schematic diagram, Figure 17 is the effect simulation schematic diagram of liquid crystal display device in the present embodiment.As shown in figure 17, the present embodiment liquid crystal
Pixel electrode 13 in display device in the pixel unit P of all red (R) colors is controlled by two switch elements (TFT), is owned
Pixel electrode 13 in the pixel unit P of blue (B) color is controlled by a switch element (TFT), the pixel list of only green (G) color
Pixel electrode 13 in first P is controlled by one or two switch element (TFT), relative in the embodiment of the present invention three (Figure 16)
Red (R), green (G), blue (B) three color the pixel electrode 13 of pixel unit P be to be controlled by one or two switch element (TFT)
System, the present embodiment further increase display image quality.
Those skilled in the art it should be understood that remaining structure and working principle of the present embodiment and embodiment
Three is identical, and which is not described herein again.
[embodiment six]
As shown in figure 18, the array base in a kind of array substrate and embodiment five (Figure 15) that the embodiment of the present invention six provides
Plate is essentially identical, the difference is that, in the present embodiment, the pixel in the first pixel unit P1 of every one-row pixels unit P
Electrode 13 is by first switching element 1 and second switch element 2 and positioned at two scannings of the two sides next line pixel unit P or more
Line 14 connects.
Specifically, the pixel electrode 13 in the first pixel unit P1 of current row pixel unit P passes through 1 He of first switching element
Second switch element 2 is connect with two scan lines 14 for being located at the two sides next line pixel unit P or more, in the present embodiment, the
Control terminal, the control terminal of third switch element 3, the control terminal of the 4th switch element 4 of one switch element 1 are connected under being located at
In scan line 14 (G1 in Figure 18) on the upside of one-row pixels unit P, the control terminal and first switching element 1 of second switch element 2
The connection of one of conducting end, another conducting end of first switching element 1 by a connecting line be located at next line picture
Scan line 14 (G2 in Figure 18) connection on the downside of plain unit P.
Those skilled in the art it should be understood that remaining structure and working principle of the present embodiment and embodiment
Five is identical, and which is not described herein again.
[embodiment seven]
As illustrated in figures 19 and 20, a kind of array substrate and embodiment one (Fig. 3 and Fig. 4) that the embodiment of the present invention seven provides
In array substrate it is essentially identical, the difference is that, liquid crystal layer 30 in the present embodiment uses negative liquid crystal molecule.With skill
The performance of art progress, negative liquid crystal is significantly improved, using also more extensive.In the present embodiment, as shown in figure 19, initial
State, the negative liquid crystal molecule in liquid crystal layer 30 have biggish initial pre-tilt angle relative to substrate, i.e. negative liquid crystal molecule exists
Original state is relative to the inclined posture of substrate.
Under narrow viewing angle mode: Figure 19 please be join, the present embodiment is under wide viewing angle mode, to the auxiliary electrode of color membrane substrates 20
24 apply auxiliary reference voltage Vref, apply opposite auxiliary reference voltage Vref to each public electrode block 11 by common wire 16
With the common voltage compared with small pressure difference, the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 is made to be less than preset value
(such as less than 0.5V)；
At this point, since the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 is smaller, liquid crystal in liquid crystal layer 30
The tilt angle of molecule hardly happens variation, is maintained as lateral attitude, and liquid crystal display device is made wide-angle observation leakage occur
Light reduces in strabismus Direction Contrast and visual angle narrows, therefore liquid crystal display device realizes that normal narrow viewing angle is shown.Specifically
Ground, under narrow viewing angle mode, the first common voltage Vcom1 for being applied on odd column public electrode block 11 by common wire 16 and
The the second common voltage Vcom2 applied on even column public electrode block 11 is the direct current with amplitudes such as auxiliary reference voltage Vref
Voltage, the auxiliary reference voltage Vref that auxiliary electrode 24 applies can be constant 0V, the voltage applied on every common wire 16
Or constant 0V, the common voltage applied on public electrode block 11 each in this way with auxiliary reference voltage Vref phase
Together, preferable narrow viewing angle effect may be implemented.
Under wide viewing angle mode: Figure 20 please be join, the present embodiment is under wide viewing angle mode, to the auxiliary electrode of color membrane substrates 20
24 apply auxiliary reference voltage Vref, apply opposite auxiliary reference voltage Vref to each public electrode block 11 by common wire 16
Common voltage with larger pressure difference makes the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 be greater than preset value
(such as larger than 2V)；At this point, since the voltage difference between all public electrode blocks 11 and auxiliary electrode 24 is larger, in liquid crystal cell in
Stronger vertical electric field E2 (as shown by the arrows in Figure 6) can be generated between array substrate 10 and color membrane substrates 20, due to negativity liquid
Brilliant molecule will rotate under electric field action along the direction perpendicular to electric field line, therefore negative liquid crystal molecule is made in vertical electric field E2
It will deflect under, and reduce the tilt angle between liquid crystal molecule and substrate, liquid crystal molecule is transformed to put down from lateral attitude
Lying posture state, liquid crystal display device finally realize that wide viewing angle is shown.Specifically, under wide viewing angle mode, by common wire 16 to surprise
The the first common voltage Vcom1 applied on ordered series of numbers public electrode block 11 and apply on even column public electrode block 11 second public
Voltage Vcom2 is alternating voltage and the two polarity on the contrary, and the first common voltage Vcom1 and the second common voltage Vcom2
The every frame reversion of polarity is primary, and the double-point inversion driving of liquid crystal display device may be implemented.
Those skilled in the art it should be understood that remaining structure and working principle of the present embodiment and embodiment
One is identical, and which is not described herein again.
Figure 21 and Figure 22 is the planar structure schematic diagram of liquid crystal display device in the present invention, please join Figure 21 and Figure 22, the liquid
Crystal device is equipped with view angle switch key 40, for issuing view angle switch request to the liquid crystal display device for user.Visual angle
Switching key 40 can be physical button (as shown in figure 21), or software control or application program (APP) are realized
Handoff functionality (width visual angle as shown in figure 22, is set by slider bar).When user needs between wide viewing angle and narrow viewing angle
When switching, view angle switch request can be issued to the liquid crystal display device by operation view angle switch key 40, finally by driving
Chip 50 controls the voltage being applied on public electrode block 11, when the voltage difference between auxiliary electrode 24 and public electrode 31 is different
When, which can be thus achieved the switching between wide viewing angle and narrow viewing angle, when being switched to wide viewing angle, driving method
Using the corresponding driving method of wide angle mode, when being switched to narrow viewing angle, driving method uses the corresponding driving of narrow viewing angle mode
Method, therefore the liquid crystal display device of the embodiment of the present invention has stronger operating flexibility and convenience, reaches collection amusement view
Frequency is with privacy secrecy in the Multifunctional liquid crystal display device of one.
Herein, the nouns of locality such as related up, down, left, right, before and after be located in figure with the structure in attached drawing with
And structure mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the side
The use of position word should not limit the claimed range of the application.
The above described is only a preferred embodiment of the present invention, restriction in any form not is done to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification,
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, fall within the scope of protection of the technical scheme of the present invention
Within.
Claims (10)
1. a kind of array substrate, which is equipped with multi-strip scanning line (14) and multiple data lines (15) and multiple pictures
Plain unit (P), each pixel unit (P) is interior to be equipped with pixel electrode (13), which is characterized in that also sets in the array substrate (10)
There are a plurality of common wire (16) and multiple public electrode blocks (11), multiple public electrode blocks (11) are arranged in array and mutually insulated
It being spaced apart, each public electrode block (11) covers two adjacent pixel units (P) simultaneously along scan line (14) direction,
Two adjacent pixel units (P) include the first pixel unit (P1) and the second pixel unit (P2), first pixel unit
(P1) pixel electrode (13) in passes through first switching element (1) and second switch element (2) and two adjacent scannings
Line (14) and the data line (15) connection, the control terminal of the first switching element (1) and two adjacent scan lines
(14) wherein scan line (14) connection in, one of conducting end of the first switching element (1) are adjacent with two
In the scan line (14) another scan line (14) connection, another conducting end of the first switching element (1) and this second
The control terminal of switch element (2) connects, and one of conducting end of the second switch element (2) and the pixel electrode (13) are even
It connects, another conducting end of the second switch element (2) is connect with the data line (15), being somebody's turn to do in second pixel unit (P2)
Pixel electrode (13) passes through third switch element (3) and the scan line (14) and the data of closing on the third switch element (3)
Line (15) connection, each public electrode block (11) is by the 4th switch element (4) and closes on being somebody's turn to do for the 4th switch element (4)
Scan line (14) and the common wire (16) connection.
2. array substrate according to claim 1, which is characterized in that first pixel of every a line pixel unit (P)
The pixel electrode (13) in unit (P1) by the first switching element (1) and the second switch element (2) and is located at current row
The pixel unit (P) two of two sides scan lines (14) connection up and down.
3. array substrate according to claim 1, which is characterized in that first pixel of every a line pixel unit (P)
The pixel electrode (13) in unit (P1) by the first switching element (1) and the second switch element (2) with positioned at next
Two of the two sides scan line (14) connections up and down of the capable pixel unit (P).
4. array substrate according to claim 2 or 3, which is characterized in that a plurality of common wire (16) and a plurality of data
Line (15) extends in the same direction, and a plurality of common wire (16) and a plurality of data line (15) are submitted in scan line (14) direction
A width for arranging the pixel unit (P) is spaced for arrangement, between every two the adjacent data lines (15) and the common wire (16).
5. array substrate according to claim 2 or 3, which is characterized in that a plurality of common wire (16) and a plurality of data
Line (15) extends in the same direction, and two adjacent pixel units (P) of each public electrode block (11) covering are one group,
The two adjacent groups pixel unit (P) is to be arranged a repetition period on scan line (14) direction, the two adjacent groups picture
Plain unit (P) is connected with two data lines (15) and two common wires (16), wherein the every data line (15) setting exists
Between two adjacent pixel units (P) in each group, two common wires (16) are arranged in the two adjacent groups pixel list
Between first (P) and mutually adjoin setting side by side.
6. array substrate according to claim 2 or 3, which is characterized in that a plurality of common wire (16) and a plurality of data
Line (15) extends in the same direction, and two adjacent pixel units (P) of each public electrode block (11) covering are one group,
The adjacent three groups pixel units (P) are to be arranged a repetition period on scan line (14) direction, adjacent three groups of pictures
Plain unit (P) is connected with three data lines (15) and three common wires (16), wherein the every data line (15) setting exists
The two of them common wire between two adjacent pixel units (P) in each group, in three common wires (16)
(16) it is arranged between the two adjacent groups pixel unit (P) and mutually adjoins setting side by side, it is another in three common wires (16)
One common wire (16) is arranged in the side of another group of pixel unit (P).
7. a kind of driving method for driving such as array substrate as claimed in any one of claims 1 to 6, which is characterized in that should
Driving method includes:
In two adjacent scan lines Gn, Gn+1, in first time period t1, makes scan line Gn and scan line Gn+1 while being high
Level, the first switching element (1) and the second switch element (2) open simultaneously, which passes through the number
Be filled with correct data voltage according to line (15), the third switch element (3) open, second pixel unit (P2) be filled with this first
The data voltage of pixel unit (P1)；
In second time period t2, make scan line Gn high level, makes scan line Gn+1 low level, the first switching element
(1) it opens, which closes, and the data voltage in first pixel unit (P1) is kept, which opens
It closes element (3) to open, which is filled with correct data voltage by the data line (15)；
Wherein, n is the positive integer greater than 0.
8. a kind of liquid crystal display device, which is characterized in that including array substrate (10) such as claimed in any one of claims 1 to 6,
The color membrane substrates (20) that are oppositely arranged with the array substrate (10) and it is located 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).
9. a kind of for driving the driving method of liquid crystal display device as claimed in claim 8, which is characterized in that the driving side
Method includes:
Under the first field-of-view mode, applies auxiliary reference voltage (Vref) to the auxiliary electrode (24), pass through the common wire
(16) there is the common voltage compared with small pressure difference to the opposite auxiliary reference voltage (Vref) of each public electrode block (11) application,
The voltage difference between all public electrode blocks (11) and the auxiliary electrode (24) is set to be less than preset value；
Under second of field-of-view mode, applies auxiliary reference voltage (Vref) to the auxiliary electrode (24), pass through the common wire
(16) apply the common voltage that the opposite auxiliary reference voltage (Vref) has larger pressure difference to each public electrode block (11),
The voltage difference between all public electrode blocks (11) and the auxiliary electrode (24) is set to be greater than preset value.
10. driving method according to claim 9, which is characterized in that by the common wire (16) to each common electrical
When pole block (11) applies common voltage, apply the to the common wire (16) for being located at odd positions on scan line (14) direction
One common voltage (Vcom1) applies the second public affairs to the common wire (16) that even bit is set is located on scan line (14) direction
Common voltage (Vcom2), under the first field-of-view mode, first common voltage (Vcom1) and second common voltage (Vcom2)
For the DC voltage with the amplitudes such as the auxiliary reference voltage (Vref), under second of field-of-view mode, first common voltage
(Vcom1) and second common voltage (Vcom2) be on the opposite auxiliary reference voltage (Vref) alternating voltage of below-center offset and
The two polarity is opposite；
The liquid crystal layer (30) uses positive liquid crystal molecules, which is wide viewing angle mode, second of visual angle mould
Formula is narrow viewing angle mode；Alternatively, the liquid crystal layer (30) uses negative liquid crystal molecule, which is narrow viewing angle mould
Formula, second of field-of-view mode are wide viewing angle mode.
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| TWI754349B (en) * | 2020-08-07 | 2022-02-01 | 大陸商深超光電（深圳）有限公司 | Thin film transistor array substrate and display panel |
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