CN109239995A - Liquid crystal display device and its driving method - Google Patents
Liquid crystal display device and its driving method Download PDFInfo
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- CN109239995A CN109239995A CN201811408105.5A CN201811408105A CN109239995A CN 109239995 A CN109239995 A CN 109239995A CN 201811408105 A CN201811408105 A CN 201811408105A CN 109239995 A CN109239995 A CN 109239995A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 193
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 152
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 34
- 230000005611 electricity Effects 0.000 claims description 15
- 239000010408 film Substances 0.000 claims description 14
- 239000010409 thin film Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims 2
- 230000000007 visual effect Effects 0.000 abstract description 13
- 239000010410 layer Substances 0.000 description 68
- 230000000903 blocking effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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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
-
- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention discloses a kind of liquid crystal display device and its driving method, the liquid crystal display device includes first substrate, the second substrate, third substrate, first liquid crystal layer and the second liquid crystal layer, the second substrate is between first substrate and third substrate, first liquid crystal layer, which is clipped between first substrate and the second substrate, constitutes the first liquid crystal cell, second liquid crystal layer, which is clipped between the second substrate and third substrate, constitutes the second liquid crystal cell, the second substrate is equipped with first electrode and second electrode in the side towards the first liquid crystal layer, the second substrate is equipped at least two third electrodes being spaced apart from each other in the side towards the second liquid crystal layer, third substrate is equipped at least two the 4th electrodes being spaced apart from each other in the side towards the second liquid crystal layer, 4th electrode is arranged in a one-to-one correspondence with third electrode.Liquid crystal display device and its driving method provided by the invention can have different voltage differences between third electrode and the 4th electrode by making the different zones of liquid crystal display device, to realize that subregion width visual angle is shown.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of liquid crystal display device and its driving method.
Background technique
Liquid crystal display device have image quality is good, small in size, light-weight, low driving voltage, low-power consumption, radiationless and manufacture at
This relatively low advantage is occupied an leading position in flat display field.
With being constantly progressive for LCD technology, the visible angle of display widened from original 120 ° or so to
160 ° or more, people are while enjoying big visual angle bring visual experience, it is also desirable to which effective protection trade secret and individual are hidden
Private, to avoid screen message leaks and caused by business loss or embarrassment.Therefore other than wide viewing angle, it is also necessary to display device
Has the function that wide viewing angle mutually switches with narrow viewing angle.Wherein, a kind of mode for realizing width view angle switch is filtered using colour
The viewing angle control electrode of the side mating plate substrate (CF) applies a vertical electric field to liquid crystal molecule, is rotating horizontally liquid crystal molecule
While tilted because of vertical direction electric field, liquid crystal display device realizes that narrow viewing angle is shown because light leakage and contrast reduce；
Viewing angle control electrode does not give voltage, i.e. realization wide viewing angle is shown.
However, current liquid crystal display device can only generally realize the wide viewing angle or narrow viewing angle of whole region, it is unable to satisfy
The demand of width visual angle multi-section display.
Summary of the invention
The object of the present invention is to provide a kind of separated regions to carry out the liquid crystal display device and its driving method that width is shown.
The embodiment of the present invention provides a kind of liquid crystal display device, including first substrate, the second substrate, third substrate, first
Liquid crystal layer and the second liquid crystal layer, the second substrate are located between the first substrate and the third substrate, which is clipped in
The first liquid crystal cell is constituted between the first substrate and the second substrate, which is clipped in the second substrate and the third base
The second liquid crystal cell is constituted between plate, which is equipped with first electrode and the second electricity in the side towards first liquid crystal layer
Pole, the second substrate are equipped at least two third electrodes being spaced apart from each other, the third base in the side towards second liquid crystal layer
Plate is equipped at least two the 4th electrodes being spaced apart from each other, the 4th electrode and third electricity in the side towards second liquid crystal layer
Pole is arranged in a one-to-one correspondence.
Wherein in an embodiment, it is additionally provided with active device array in the second substrate, which specifically includes
Scan line, data line and thin film transistor (TFT), multi-strip scanning line are intersected restriction with multiple data lines mutually insulated and are formed in array row
Multiple pixel units of cloth, each pixel unit is interior to be equipped with thin film transistor (TFT) and pixel electrode, the third electrode and second base
Pixel unit on plate is arranged in a one-to-one correspondence, and the 4th electrode is also arranged in a one-to-one correspondence with the pixel unit in the second substrate.
Wherein in an embodiment, it is additionally provided with active device array in the second substrate, which specifically includes
Scan line, data line and thin film transistor (TFT), multi-strip scanning line are intersected restriction with multiple data lines mutually insulated and are formed in array row
Multiple pixel units of cloth, are equipped with thin film transistor (TFT) and pixel electrode in each pixel unit, each third electrode and each
4th electrode covers multiple pixel units.
Wherein in an embodiment, be additionally provided in the second substrate it is multiple with the third electrode correspondingly with control this
First switching element that whether three electrodes are powered and/or, be additionally provided with and multiple corresponded with the 4th electrode on the third substrate
To control the second switch element whether the 4th electrode is powered.
Wherein in an embodiment, which uses vertical orientation, and initial pre-tilt angle is about 2 °, second liquid crystal
Box uses horizontal direction matching, and initial pre-tilt angle is about 40 °~80 °；First liquid crystal layer uses positivity liquid crystal, second liquid crystal layer
Using negative liquid crystal.
A kind of driving method of above-mentioned liquid crystal display device, comprising:
Under multi-section display mode, do not apply voltage between at least one third electrode and corresponding 4th electrode
Difference or voltage difference are smaller, and apply larger voltage difference between remaining third electrode and corresponding 4th electrode.
Wherein in an embodiment, the driving method further include: the driving method of the liquid crystal display device further include: overstepping one's bounds
Under area's display pattern, does not apply voltage difference between all third electrodes and corresponding 4th electrode or voltage difference is smaller,
Or apply larger voltage difference between all third electrodes and corresponding 4th electrode.
Wherein in an embodiment, voltage difference or voltage difference are not applied between the third electrode and corresponding 4th electrode
It is smaller specifically: not apply voltage to the third electrode and the 4th electrode, alternatively, applying to the third electrode and the 4th electrode
Add identical or essentially identical voltage；
Apply larger voltage difference between the third electrode and corresponding 4th electrode specifically: give the third electrode
And/or the 4th electrode apply different voltages.
Invention additionally discloses a kind of liquid crystal display devices, including first substrate, the second substrate, third substrate, the first liquid crystal
Layer and the second liquid crystal layer, which is located between the first substrate and the third substrate, first liquid crystal layer be clipped in this
The first liquid crystal cell is constituted between one substrate and the second substrate, second liquid crystal layer be clipped in the second substrate and the third substrate it
Between constitute the second liquid crystal cell, the second substrate the side towards first liquid crystal layer be equipped with first electrode and second electrode, should
The second substrate is equipped with third electrode in the side towards second liquid crystal layer, and the third substrate is towards the one of second liquid crystal layer
Side is equipped with the 4th electrode, wherein the 4th electrode be it is two at least spaced, the corresponding covering of third electrode is owned
4th electrode；Alternatively, the third electrode be it is two at least spaced, the corresponding covering of the 4th electrode it is all this
Three electrodes.
The present invention also provides a kind of driving methods of above-mentioned liquid crystal display device, which is characterized in that the driving method includes:
Under multi-section display mode, voltage difference or electricity are not applied between at least one third electrode and the 4th electrode
Pressure difference is smaller, and applies larger voltage difference between remaining third electrode and the 4th electrode；Or at least one this
Do not apply voltage difference between four electrodes and the third electrode or voltage difference is smaller, and in remaining the 4th electrode and the third electrode
Between apply larger voltage difference；
Under the display pattern of case of non-partitioned, voltage difference or voltage are not applied between all third electrodes and the 4th electrode
Difference is smaller, perhaps applies larger voltage difference between all third electrodes and the 4th electrode or in all 4th electricity
Do not apply voltage difference between pole and the third electrode or voltage difference be smaller, or all 4th electrodes and the third electrode it
Between apply larger voltage difference.
Liquid crystal display device and its driving method provided by the invention, can be by making the different zones of liquid crystal display device
There is different voltage differences between third electrode and the 4th electrode, there is the liquid crystal of the second liquid crystal layer in different zones different
Standing angle and have different light transmission capacities, to realize that subregion width visual angle is shown.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the liquid crystal display device of first embodiment of the invention；
Fig. 2 is the narrow viewing angle display simulation effect picture of liquid crystal display device shown in Fig. 1；
Fig. 3 is the wide viewing angle display simulation effect picture of liquid crystal display device shown in Fig. 1；
Fig. 4 is the schematic diagram of the section structure of the liquid crystal display device of second embodiment of the invention；
Fig. 5 a to Fig. 5 c is the third electrode of liquid crystal display device and the planar structure schematic diagram of the 4th electrode shown in Fig. 4；
Fig. 6 is the schematic diagram of the section structure of the liquid crystal display device of fourth embodiment of the invention；
Fig. 7 is the schematic diagram of the section structure of the liquid crystal display device of fifth embodiment of the invention.
Specific embodiment
It is of the invention to reach the technical approach and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Accompanying drawings and embodiments, to a specific embodiment of the invention, structure, feature and its effect, detailed description is as follows.
First embodiment
As shown in Figure 1, the liquid crystal display device of first embodiment of the invention includes first substrate 10, the second substrate 20,
Three substrates 30, the first liquid crystal layer 40 and the second liquid crystal layer 50.The second substrate 20 between first substrate 10 and third substrate 30,
First liquid crystal layer 40, which is clipped between first substrate 10 and the second substrate 20, constitutes the first liquid crystal cell, and the second liquid crystal layer 50 is clipped in second
The second liquid crystal cell is constituted between substrate 20 and third substrate 30.
The second substrate 20 is equipped with first electrode 21 and second electrode 23 in the side towards the first liquid crystal layer 40.Wherein,
One electrode 21 is pixel electrode (pixel electrode), and second electrode 22 is public electrode (common electrode).The
Two substrates 20 are equipped with multiple third electrodes 25 being spaced apart from each other in the side towards the second liquid crystal layer 50, and third substrate 30 is in direction
The side of second liquid crystal layer 50 is equipped with multiple the 4th electrodes 31 being spaced apart from each other, multiple 4th electrodes 31 and multiple third electrodes 25
It is arranged in a one-to-one correspondence.Multiple and third electrode 25 is additionally provided in the second substrate 20 correspondingly whether to control third electrode 25
The first switching element 26 of energization, be additionally provided on third substrate 30 it is multiple with the 4th electrode 31 correspondingly with the 4th electricity of control
The second switch element 32 whether pole 31 is powered.
First substrate 10 is colored filter substrate.Color blocking layer 12,14 He of black matrix (BM) are additionally provided on first substrate 10
Flatness layer 16.Color blocking layer 12 is, for example, R, G, B color blocking material.Color blocking layer 12 and black matrix 14 mutually stagger and are formed in first substrate
On the surface of 10 direction 40 sides of the first liquid crystal layer, flatness layer 16 covers color blocking layer 12 and black matrix 13.Flatness layer 16 is preferred
, flatness layer 16 can also be not provided on first substrate 10.
The first polarizing film 18 is additionally provided on first substrate 10, specifically, it is remote that the first polarizing film 18 can be set to first substrate 10
Side from the second substrate 20.Certainly, the first polarizing film 18 can also be set to first substrate 10 close to the side of the second substrate 20 its
His position, herein with no restrictions.
The second substrate 20 is thin-film transistor array base-plate.First electrode 21 in the second substrate 20 and second electrode 23
It is folded with insulating layer 27 in different layers and between the two.First electrode 21 is located at 23 top of second electrode in the present embodiment, but not
It is limited to this, in other embodiments, first electrode 21 can also be located at 23 lower section of second electrode or first electrode 21 and second
Electrode 23 is located on the same floor.
Active device array 29 is additionally provided in the second substrate 20, the structure about active device array 29 is art technology
Personnel are known, and active device array 29 specifically includes scan line, data line and thin film transistor (TFT) (TFT), multi-strip scanning line and more
Data line mutually insulated intersects the multiple pixel units for limiting and being formed and being arranged in array.Be equipped in each pixel unit TFT and
Pixel electrode (first electrode 21 i.e. in the present embodiment).Each TFT includes grid, active layer, source electrode and drain electrode, wherein grid
Pole is electrically connected corresponding scan line, and source electrode is electrically connected corresponding data line, and drain electrode is electrically connected corresponding pixel electrode.The present embodiment
In, third electrode 25 is arranged in a one-to-one correspondence with the pixel unit in the second substrate 20, on the 4th electrode 31 and the second substrate 20
Pixel unit is also arranged in a one-to-one correspondence.It is appreciated that each third electrode 25 and the 4th electrode 31 can also cover multiple pixel lists
Member.
The second polarizing film 33 is additionally provided on third substrate 30, specifically, it is remote that the second polarizing film 33 can be set to third substrate 30
Side from the second substrate 20.Certainly, the second polarizing film 33 can also be set to third substrate 30 close to the side of the second substrate 20 its
His position, herein with no restrictions.
Protective layer 35 is additionally provided on third substrate 30, protective layer 35 is set between third substrate 30 and the 4th electrode 31.
First electrode 21, second electrode 23, third electrode 25 and the 4th electrode 31 are by transparent conductive material (such as ITO, IZO
Deng) be made.
First liquid crystal cell of the liquid crystal display device uses fringe field switching architecture (Fringe Field
Switching, FFS), pixel electrode (i.e. first electrode 21) and public electrode (i.e. second electrode 23) are both formed in the second substrate
In 20 (array substrates), when applying electric field between public electrode and pixel electrode, liquid crystal molecule is substantially parallel with substrate
Plane internal rotation to obtain wider visual angle.It is appreciated that other can also be used in the first liquid crystal cell of the liquid crystal display device
Structure type, details are not described herein.
In the present embodiment, the first liquid crystal cell uses vertical orientation, and initial pre-tilt angle is about 2 °, and the second liquid crystal cell uses water
Flat orientation, and initial pre-tilt angle is about 40 °~80 °.In the present embodiment, the first liquid crystal layer 40 uses positivity liquid crystal, the second liquid crystal
Layer 50 uses negative liquid crystal.It is appreciated that orientation, pre-tilt angle and the liquid crystal property of the first liquid crystal cell and the second liquid crystal cell and unlimited
In this.In other embodiments, the first liquid crystal cell uses horizontal direction matching, and the second liquid crystal cell uses vertical orientation, the first liquid crystal layer
40 use negative liquid crystal, and the second liquid crystal layer 50 uses positivity liquid crystal；Alternatively, the first liquid crystal cell uses horizontal direction matching, the second liquid crystal
Box uses horizontal direction matching, and the first liquid crystal layer 40 uses positivity liquid crystal, and the second liquid crystal layer 50 uses positivity liquid crystal.
First liquid crystal cell of this liquid crystal display device is conventional liquid crystal display panel, can be by normally controlling realization
Normal image is shown.It closes not when by electric signal control first switching element 26 and second switch element 32 to third electrode
25 and the 4th electrode 31 apply voltage when, alternatively, by electric signal control first switching element 26 and second switch element 32 beat
When open third electrode 25 and the 4th electrode 31 apply identical or essentially identical voltage (i.e. third electrode 25 and the 4th electrode 31 it
Between it is smaller without voltage difference or voltage difference), for the second liquid crystal layer 50 not by electric field action, the second liquid crystal cell light leakage is less, real
Existing narrow viewing angle is shown；It opens when by electric signal control first switching element 26 and/or second switch element to third electrode 25
And/or when the 4th application different voltages of electrode 31 (there are larger voltage differences between third electrode 25 and the 4th electrode 31), the
By electric field action, liquid crystal deflects two liquid crystal layers 50, so that the second liquid crystal cell light leakage is more, realizes that wide viewing angle is shown.And
And when there are larger voltage differences for the third electrode 25 in a part of region and the 4th electrode 31, and to the third in other parts region
When electrode 25 and the 4th electrode 31 do not have voltage difference or smaller voltage difference, it is achieved that partial region wide viewing angle is shown, part area
Domain narrow viewing angle is shown, is realized the different displays at subregion width visual angle, is met consumer demand.
It is appreciated that multiple and third electrode 25 can also be only equipped in the second substrate 20 correspondingly to control third
The first switching element 26 whether electrode 25 is powered is not provided with second switch element 32 on third substrate 30.In this way, persistently to
Four electrodes 31 apply voltage, do not apply voltage to third electrode 25 by the control of first switching element 26 or to third electrode 25
Apply voltage identical with the 4th electrode 31, there are voltage differences between equally adjustable third electrode 25 and the 4th electrode 31, real
Existing width visual angle is shown.
It is appreciated that multiple and the 4th electrode 31 can also be only equipped on third substrate 30 correspondingly with control the 4th
The second switch element 32 whether electrode 31 is powered is not provided with first switching element 26 in the second substrate 20.In this way, persistently to
Three electrodes 25 apply voltage, do not apply voltage to the 4th electrode 31 by the control of second switch element 32 or to the 4th electrode 31
Apply voltage identical with third electrode 25, there are voltage differences between equally adjustable 4th electrode 31 and third electrode 25, real
Existing width visual angle is shown.
As shown in Figures 2 and 3, the respectively liquid crystal display device of the present embodiment is when narrow viewing angle is shown and wide viewing angle is shown
Simulation effect picture, realize the display at width visual angle well.It as shown in table 1 below, is the liquid crystal display device of the present embodiment
Simulation effect numerical value when narrow viewing angle is shown and wide viewing angle is shown.
Table 1
Second embodiment
As shown in figure 4, the liquid crystal display device of second embodiment of the invention and the liquid crystal display device base of first embodiment
This is similar, and difference is, the liquid crystal display device of second embodiment does not include first switching element 26 and second switch element 32,
Directly apply voltage to third electrode 25 and/or the 4th electrode 31 by peripheral circuit, to control the width of liquid crystal display device
Narrow viewing angle shows that basic structure and basic principle are similar to first embodiment.
Specifically, the liquid crystal display device of second embodiment include first substrate 10, the second substrate 20, third substrate 30,
First liquid crystal layer 40 and the second liquid crystal layer 50.The second substrate 20 is between first substrate 10 and third substrate 30, the first liquid crystal
Layer 40 is clipped between first substrate 10 and the second substrate 20 and constitutes the first liquid crystal cell, the second liquid crystal layer 50 be clipped in the second substrate 20 with
The second liquid crystal cell is constituted between third substrate 30.
The second substrate 20 is equipped with first electrode 21 and second electrode 23 in the side towards the first liquid crystal layer 40.Wherein,
One electrode 21 is pixel electrode (pixel electrode), and second electrode 22 is public electrode (common electrode).The
Two substrates 20 are equipped at least two third electrodes 25 being spaced apart from each other in the side towards the second liquid crystal layer 50, and third substrate 30 exists
At least two the 4th electrodes 31 being spaced apart from each other, the 4th electrode 31 and third electrode 25 are equipped with towards the side of the second liquid crystal layer 50
It is arranged in a one-to-one correspondence.
First substrate 10 is colored filter substrate.Color blocking layer 12,14 He of black matrix (BM) are additionally provided on first substrate 10
Flatness layer 16.Color blocking layer 12 is, for example, R, G, B color blocking material.Color blocking layer 12 and black matrix 14 mutually stagger and are formed in first substrate
On the surface of 10 direction 40 sides of the first liquid crystal layer, flatness layer 16 covers color blocking layer 12 and black matrix 13.Flatness layer 16 is preferred
, flatness layer 16 can also be not provided on first substrate 10.
The first polarizing film 18 is additionally provided on first substrate 10, specifically, it is remote that the first polarizing film 18 can be set to first substrate 10
Side from the second substrate 20.Certainly, the first polarizing film 18 can also be set to the other positions of 40 top of the first liquid crystal layer, herein not
It is limited.
The second substrate 20 is thin-film transistor array base-plate.First electrode 21 in the second substrate 20 and second electrode 23
It is folded with insulating layer 27 in different layers and between the two.First electrode 21 is located at 23 top of second electrode in the present embodiment, but not
It is limited to this, in other embodiments, first electrode 21 can also be located at 23 lower section of second electrode or first electrode 21 and second
Electrode 23 is located on the same floor.
Active device array 29 is additionally provided in the second substrate 20, the structure about active device array 29 is art technology
Personnel are known, and active device array 29 specifically includes scan line, data line and thin film transistor (TFT) (TFT), multi-strip scanning line and more
Data line mutually insulated intersects the multiple pixel units for limiting and being formed and being arranged in array.Be equipped in each pixel unit TFT and
Pixel electrode (first electrode 21 i.e. in the present embodiment).Each TFT includes grid, active layer, source electrode and drain electrode, wherein grid
Pole is electrically connected corresponding scan line, and source electrode is electrically connected corresponding data line, and drain electrode is electrically connected corresponding pixel electrode.
Shown as shown in Figure 5 a to 5 c in the present embodiment, the second substrate 20 is equipped with third electrode 25a, 25b, third substrate
30 are equipped with the 4th electrode 31a, 31b, and third electrode 25a, 25b are spaced apart from each other setting, and the 4th electrode 31a, 31b, which is spaced apart from each other, to be set
Set, peripheral circuit is electrically connected at third electrode 25a, 25b and the 4th electrode 31a, 31b, with to third electrode 25a, 25b with
And the 4th electrode 31a, 31b apply voltage.As shown in Figure 5 a, third electrode 25b is less than third electrode 25a, and is located at third electricity
A corner of pole 25a；As shown in Figure 5 b, third electrode 25b is less than third electrode 25a, and two third electrode 25b distinguish position
In two corners of third electrode 25a；As shown in Figure 5 c, third electrode 25b is less than third electrode 25a, and is located at third electrode
The upper middle side part of 25a.It is appreciated that third electrode 25 can also be arranged in a one-to-one correspondence with the pixel unit in the second substrate 20, it is right
Ying Di, the 4th electrode 31 are arranged in a one-to-one correspondence and also correspond with the pixel unit in the second substrate 20 with third electrode 25 and set
It sets.
The second polarizing film 33 is additionally provided on third substrate 30, specifically, it is remote that the second polarizing film 33 can be set to third substrate 10
Side from the second substrate 20.Certainly, the second polarizing film 33 can also be set to third substrate 10 close to the side of the second substrate 20 its
His position, herein with no restrictions.
First electrode 21, second electrode 23, third electrode 25 and the 4th electrode 31 are by transparent conductive material (such as ITO, IZO
Deng) be made.
First liquid crystal cell of the liquid crystal display device uses fringe field switching architecture (Fringe Field
Switching, FFS), pixel electrode (i.e. first electrode 21) and public electrode (i.e. second electrode 23) are both formed in the second substrate
In 20 (array substrates), when applying electric field between public electrode and pixel electrode, liquid crystal molecule is substantially parallel with substrate
Plane internal rotation to obtain wider visual angle.It is appreciated that other can also be used in the first liquid crystal cell of the liquid crystal display device
Structure type, details are not described herein.
In the present embodiment, the first liquid crystal cell uses vertical orientation, and initial pre-tilt angle is about 2 °, and the second liquid crystal cell uses water
Flat orientation, and initial pre-tilt angle is about 40 °~80 °.In the present embodiment, the first liquid crystal layer 40 uses positivity liquid crystal, the second liquid crystal
Layer 50 uses negative liquid crystal.It is appreciated that orientation, pre-tilt angle and the liquid crystal property of the first liquid crystal cell and the second liquid crystal cell and unlimited
In this.In other embodiments, the first liquid crystal cell uses horizontal direction matching, and the second liquid crystal cell uses vertical orientation, the first liquid crystal layer
40 use negative liquid crystal, and the second liquid crystal layer 50 uses positivity liquid crystal；Alternatively, the first liquid crystal cell uses horizontal direction matching, the second liquid crystal
Box uses horizontal direction matching, and the first liquid crystal layer 40 uses positivity liquid crystal, and the second liquid crystal layer 50 uses positivity liquid crystal.
3rd embodiment
The present invention also provides a kind of driving methods of above-mentioned liquid crystal display device, comprising:
Under multi-section display mode, do not apply voltage between at least one third electrode 25 and corresponding 4th electrode 31
Difference or voltage difference are smaller, and apply larger voltage difference between remaining third electrode 25 and corresponding 4th electrode 31.At this moment, portion
Subregion is since there is no voltage difference or voltage difference are smaller and are shown with narrow viewing angle mode, and another part region is since there are larger
Voltage difference and shown with wide viewing angle mode, realize multi-section display.
The driving method of the liquid crystal display device further include:
Under the display pattern of case of non-partitioned, do not apply voltage difference between all third electrodes 25 and corresponding 4th electrode 31
Or voltage difference is smaller, or applies larger voltage difference between all third electrodes 25 and corresponding 4th electrode 31.At this moment, institute
Have region be not present voltage difference or voltage difference it is smaller and shown with full frame narrow viewing angle mode or all areas exist it is larger
Voltage difference and shown with full frame wide viewing angle mode.
In the present embodiment, does not apply voltage difference between third electrode 25 and corresponding 4th electrode 31 or voltage difference is smaller
Specifically: do not apply voltage to third electrode 25 and the 4th electrode 31, alternatively, applying phase to third electrode 25 and the 4th electrode 31
Same or essentially identical voltage.
In the present embodiment, apply larger voltage difference between third electrode 25 and corresponding 4th electrode 31 specifically: give
Third electrode 25 and/or the 4th electrode 31 apply different voltages.
Liquid crystal display device in the driving method and above-described embodiment of the present embodiment belongs to the same design, the driving side
More contents of method are referring also to the description as described in liquid crystal display device in above-described embodiment, and details are not described herein.
Fourth embodiment
As shown in fig. 6, the liquid crystal display device of fourth embodiment of the invention and the liquid crystal display device base of first embodiment
This is similar, and difference is, only includes a third electrode 25 in the liquid crystal display device of fourth embodiment, and third electrode 25 is corresponding
All 4th electrodes 31 are covered, and first switching element 26 can be omitted.Apply difference by the 4th electrode 31 to different zones
Voltage, there is different electricity between the third electrode 25 and the 4th electrode 31 of same achievable liquid crystal display device different zones
Pressure difference, to realize that subregion width visual angle shows that concrete principle is similar with first embodiment, details are not described herein.
In the present embodiment, each 4th electrode 31 is arranged in a one-to-one correspondence with pixel unit or each 4th electrode 31 covers
Cover multiple pixel units.
In the present embodiment, multiple and the 4th electrode 31 is additionally provided on third substrate 30 correspondingly to control the 4th electrode
The 31 second switch elements 32 whether being powered.
5th embodiment
As shown in fig. 7, the liquid crystal display device of fourth embodiment of the invention and the liquid crystal display device base of first embodiment
This is similar, and difference is, only includes the 4th electrode 31 in the liquid crystal display device of fourth embodiment, and the 4th electrode 31 is corresponding
All third electrodes 25 are covered, and second switch element 32 can omit.Apply difference by the third electrode 25 to different zones
Voltage, there is different electricity between the third electrode 25 and the 4th electrode 31 of same achievable liquid crystal display device different zones
Pressure difference, to realize that subregion width visual angle shows that concrete principle is similar with first embodiment, details are not described herein.
In the present embodiment, each third electrode 25 is arranged in a one-to-one correspondence with pixel unit or each third electrode 25 covers
Cover multiple pixel units.
In the present embodiment, multiple and third electrode 25 is additionally provided in the second substrate 20 correspondingly to control third electrode
25 first switching elements 26 whether being powered.
Sixth embodiment
The present invention also provides a kind of driving method of liquid crystal display device described in above-mentioned fourth embodiment and the 5th embodiment,
Include:
Under multi-section display mode, voltage difference or electricity are not applied between at least one third electrode 25 and the 4th electrode 31
Pressure difference is smaller, and applies larger voltage difference between remaining third electrode 25 and the 4th electrode 31；Or at least one the 4th
Do not apply voltage difference between electrode 31 and third electrode 25 or voltage difference is smaller, and in remaining the 4th electrode 31 and third electrode 25
Between apply larger voltage difference.At this moment, partial region is since there is no voltage difference or voltage difference are smaller and are shown with narrow viewing angle mode
Show, multi-section display is realized due to showing there are larger voltage difference with wide viewing angle mode in another part region.
The driving method of the liquid crystal display device further include:
Under the display pattern of case of non-partitioned, voltage difference or voltage are not applied between all third electrodes 25 and the 4th electrode 31
Difference is smaller, perhaps applies larger voltage difference between all third electrodes 25 and the 4th electrode 31 or in all 4th electrodes
Do not apply voltage difference between 31 and third electrode 25 or voltage difference be smaller, or all 4th electrodes 31 and third electrode 25 it
Between apply larger voltage difference.At this moment, voltage difference is not present in all areas or voltage difference is smaller and aobvious with full frame narrow viewing angle mode
Show or all areas are had larger voltage difference and shown with full frame wide viewing angle mode.
Liquid crystal display device in the driving method and above-described embodiment of the present embodiment belongs to the same design, the driving side
More contents of method are referring also to the description as described in liquid crystal display device in above-described embodiment, and details are not described herein.
The above is only presently preferred embodiments of the present invention, are not intended to limit the present invention in any form, although this
Invention has been disclosed in a preferred embodiment above, and however, it is not intended to limit the invention, any person skilled in the art,
It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent
The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above reality
Any simple modification, equivalent change and modification made by example are applied, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of liquid crystal display device, which is characterized in that including first substrate (10), the second substrate (20), third substrate (30),
First liquid crystal layer (40) and the second liquid crystal layer (50), the second substrate (20) are located at the first substrate (10) and the third substrate
(30) between, which is clipped between the first substrate (10) and the second substrate (20) and constitutes the first liquid crystal
Box, second liquid crystal layer (50) are clipped between the second substrate (20) and the third substrate (30) and constitute the second liquid crystal cell, this
Two substrates (20) are equipped with first electrode (21) and second electrode (23), second base in the side towards first liquid crystal layer (40)
Plate (20) is equipped at least two third electrodes (25) being spaced apart from each other, the third base in the side towards second liquid crystal layer (50)
Plate (30) is equipped at least two the 4th electrodes (31) being spaced apart from each other, the 4th electricity in the side towards second liquid crystal layer (50)
Pole (31) is arranged in a one-to-one correspondence with the third electrode (25).
2. liquid crystal display device as described in claim 1, which is characterized in that be additionally provided with active component in the second substrate (20)
Array (29), the active device array (29) specifically include scan line, data line and thin film transistor (TFT), multi-strip scanning line with it is a plurality of
Data line mutually insulated intersects the multiple pixel units for limiting and being formed and being arranged in array, and is equipped with film crystal in each pixel unit
Pipe and pixel electrode, the third electrode (25) are arranged in a one-to-one correspondence with the pixel unit in the second substrate (20), the 4th electricity
Pole (31) is also arranged in a one-to-one correspondence with the pixel unit in the second substrate (20).
3. liquid crystal display device as described in claim 1, which is characterized in that be additionally provided with active component in the second substrate (20)
Array (29), the active device array (29) specifically include scan line, data line and thin film transistor (TFT), multi-strip scanning line with it is a plurality of
Data line mutually insulated intersects the multiple pixel units for limiting and being formed and being arranged in array, and is equipped with film crystal in each pixel unit
Pipe and pixel electrode, each third electrode (25) and each 4th electrode (31) cover multiple pixel units.
4. liquid crystal display device as claimed in any one of claims 1-3, which is characterized in that also set in the second substrate (20)
There is the multiple and third electrode (25) correspondingly to control the first switching element whether the third electrode (25) is powered
(26), it and/or, is additionally provided on the third substrate (30) multiple electric to control the 4th correspondingly with the 4th electrode (31)
The second switch element (32) whether pole (31) is powered.
5. liquid crystal display device as described in claim 1, which is characterized in that first liquid crystal cell uses vertical orientation, and just
Beginning pre-tilt angle is about 2 °, which uses horizontal direction matching, and initial pre-tilt angle is about 40 °~80 °；First liquid crystal layer
(40) positivity liquid crystal is used, which uses negative liquid crystal.
6. a kind of driving method of the liquid crystal display device as described in claim 1-5 any one, which is characterized in that the driving
Method includes:
Under multi-section display mode, do not apply between at least one third electrode (25) and corresponding 4th electrode (31)
Voltage difference or voltage difference are smaller, and apply larger electricity between remaining third electrode (25) and corresponding 4th electrode (31)
Pressure difference.
7. driving method as claimed in claim 6, which is characterized in that the driving method further include:
Under the display pattern of case of non-partitioned, do not apply electricity between all third electrodes (25) and corresponding 4th electrode (31)
Pressure difference or voltage difference are smaller, or apply larger electricity between all third electrodes (25) and corresponding 4th electrode (31)
Pressure difference.
8. driving method as claimed in claim 7, which is characterized in that in the third electrode (25) and corresponding 4th electrode
(31) do not apply voltage difference between or voltage difference is smaller specifically: do not apply to the third electrode (25) and the 4th electrode (31)
Voltage, alternatively, applying identical or essentially identical voltage to the third electrode (25) and the 4th electrode (31)；
Apply larger voltage difference between the third electrode (25) and corresponding 4th electrode (31) specifically: give third electricity
Pole (25) and/or the 4th electrode (31) apply different voltages.
9. a kind of liquid crystal display device, which is characterized in that including first substrate (10), the second substrate (20), third substrate (30),
First liquid crystal layer (40) and the second liquid crystal layer (50), the second substrate (20) are located at the first substrate (10) and the third substrate
(30) between, which is clipped between the first substrate (10) and the second substrate (20) and constitutes the first liquid crystal
Box, second liquid crystal layer (50) are clipped between the second substrate (20) and the third substrate (30) and constitute the second liquid crystal cell, this
Two substrates (20) are equipped with first electrode (21) and second electrode (23), second base in the side towards first liquid crystal layer (40)
Plate (20) the side towards second liquid crystal layer (50) be equipped with third electrode (25), the third substrate (30) towards this second
The side of liquid crystal layer (50) be equipped with the 4th electrode (31), wherein the 4th electrode (31) be it is two at least spaced, one
The third electrode (25) is corresponding to cover all 4th electrodes (31)；Alternatively, the third electrode (25) is at least spaced
Two, the 4th electrode (31) is corresponding to cover all third electrodes (25).
10. a kind of driving method of liquid crystal display device as claimed in claim 9, which is characterized in that the driving method includes:
Under multi-section display mode, do not apply voltage difference between at least one third electrode (25) and the 4th electrode (31)
Or voltage difference is smaller, and applies larger voltage difference between remaining third electrode (25) and the 4th electrode (31)；Or
Do not apply voltage difference between at least one the 4th electrode (31) and the third electrode (25) or voltage difference be smaller, and remaining should
Apply larger voltage difference between 4th electrode (31) and the third electrode (25)；
Under the display pattern of case of non-partitioned, do not apply between all third electrodes (25) and the 4th electrode (31) voltage difference or
Voltage difference is smaller, or applies larger voltage difference, Huo Zhe between all third electrodes (25) and the 4th electrode (31)
Do not apply voltage difference between all 4th electrodes (31) and the third electrode (25) or voltage difference be smaller, or it is all this
Apply larger voltage difference between four electrodes (31) and the third electrode (25).
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| CN201811408105.5A CN109239995A (en) | 2018-11-23 | 2018-11-23 | Liquid crystal display device and its driving method |
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