CN108490696A - Liquid crystal display device and its view angle switch method - Google Patents
Liquid crystal display device and its view angle switch method Download PDFInfo
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- CN108490696A CN108490696A CN201810450787.XA CN201810450787A CN108490696A CN 108490696 A CN108490696 A CN 108490696A CN 201810450787 A CN201810450787 A CN 201810450787A CN 108490696 A CN108490696 A CN 108490696A
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
-
- 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
-
- 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
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
- G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13712—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having negative dielectric anisotropy
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Liquid Crystal (AREA)
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Abstract
A kind of liquid crystal display device, including first substrate and second substrate, first substrate is equipped with viewing angle control electrode, public electrode is provided on second substrate, it is limited by scan line and data line on second substrate and forms multiple pixels, each pixel includes main pixel, the first sub-pixel and the second sub-pixel, and each main pixel is interior equipped with the main pixel electrode for including multiple pixel electrode items, it is equipped with first time pixel electrode in each first sub-pixel, second of pixel electrode is equipped in each second sub-pixel.The present invention forms vertical electric field by the region of the corresponding pixel portion between first substrate, second substrate, the liquid crystal molecule in liquid crystal layer is set to deflect under vertical electric field effect, make the liquid crystal display device in left and right directions and/or the visual angle of upper and lower directions reduces, to realize the wide viewing angle on upper and lower directions and/or left and right directions and narrow viewing angle free switching.
Description
Technical field
The present invention relates to display technology fields, and more particularly to a kind of liquid crystal display device and its view angle switch method.
Background technology
Liquid crystal display device (liquid crystal display, LCD) has good, small, 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 being constantly progressive for LCD technology, the visible angle of display is widened via original 120 ° or so
160 ° or more, people are 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 message leaks and caused by business loss or embarrassment.
Present display device develops progressively towards the direction of wide viewing angle, either mobile terminal of mobile telephone application, is shown on table
Show device or laptop computer applications, other than the demand of wide viewing angle, also needs to display device in many occasions and have width regard
The function that angle mutually switches with narrow viewing angle.Currently, be mainly the following mode realize to the wide viewing angle of liquid crystal display device with
Narrow viewing angle switches.
The first is to attach blinds Protective film on a display screen to realize, when needing to carry out peep-proof, is blocked using blinds
Film, which covers screen, can reduce visual angle.But this mode needs additionally to prepare blinds Protective film, is caused greatly to user
Inconvenience, and a blinds Protective film can only realize a kind of visual angle, and after attaching upper blinds Protective film, visual angle just secures,
It can only realize narrow viewing angle pattern, can not just show wide viewing function again.
Second is the visual angle that double light source back light systems are arranged in liquid crystal display device and are used to adjust liquid crystal display device,
Double light source back light systems are made of the light guide plate of two-layer laminate in conjunction with anti-prismatic lens, and top layer light guide plate (LGP-T) combines anti-rib
The trend that eyeglass changes light makes light be limited in narrow angular range, realizes the narrow viewing angle of liquid crystal display device, and
The function of the anti-prismatic lens of bottom light guide plate (LGP-B) combination then realizes the wide viewing angle of liquid crystal display device.But this double light sources
Back light system can cause the thickness of liquid crystal display device and cost to increase, and do not meet the lightening development of liquid crystal display device and become
Gesture.
The third is to apply one to liquid crystal molecule using the viewing angle control electrode of the side colored filter substrate (CF) to hang down
Straight electric field realizes narrow viewing angle pattern.But this mode can only realize the width view angle switch on left and right directions, it cannot be simultaneously
Realize the width view angle switch in left and right directions and/or upper and lower directions.
Invention content
The purpose of the present invention is to provide a kind of liquid crystal display devices, to solve to be only capable of realizing in available liquid crystal display device
The problem of width view angle switch of left and right directions.
The present invention solves its technical problem using technical solution below to realize.
The present invention provides a kind of liquid crystal display device, including first substrate, second substrate and positioned at first substrate and the
Liquid crystal layer between two substrates, first substrate are equipped with viewing angle control electrode, public electrode, the second base are provided on second substrate
It is limited by scan line and data line on plate and forms multiple sub-pixels, each sub-pixel includes main pixel, the first sub-pixel and second
Sub-pixel, the alignment direction of liquid crystal molecule is mutually hung down in the alignment direction and the second sub-pixel of liquid crystal molecule in the first sub-pixel
Directly, the liquid crystal molecule in main pixel is lying status under different visual angles pattern；It includes multiple pictures to be equipped in each main pixel
The main pixel electrode of plain electrode strip, each first sub-pixel is interior to be equipped with first time pixel electrode, is equipped in each second sub-pixel
Second of pixel electrode.
Further, first electrode portion includes the first conductive bar of multiple electric connections, and second electrode portion includes multiple electricity
Property connection the second conductive bar, third electrode section includes the third conductive bar of multiple electric connections.
Further, viewing angle control electrode includes second electrode portion and the third electrode section of mutually insulated, second electrode
Portion corresponds to the first sub-pixel of covering, and third electrode section corresponds to the second sub-pixel of covering.
Further, the area equation of first time pixel electrode and second of pixel electrode.
Further, liquid crystal layer uses negative liquid crystal molecule, with matching for each main corresponding negative liquid crystal molecule of pixel
To the direction extension along scan line, the orientation of negative liquid crystal molecule corresponding with each first sub-pixel is along scan line
Direction extends, and the orientation of negative liquid crystal molecule corresponding with each second sub-pixel extends along the direction of data line.
A kind of view angle switch method of liquid crystal display device as described above, the view angle switch method include：
Under the first field-of-view mode, the public electrode on second substrate applies benchmark common voltage, to first substrate
On viewing angle control electrode second electrode portion and third electrode section apply the opposite benchmark common voltage and have compared with small pressure difference
First voltage signal so that voltage difference between public electrode and viewing angle control electrode is less than preset value, and with main pixel phase
The liquid crystal molecule of corresponding region is lying status.
Under second of field-of-view mode, the public electrode on second substrate applies benchmark common voltage, to first substrate
On viewing angle control electrode second electrode portion and third electrode section apply the opposite benchmark common voltage and there is larger pressure difference
Second voltage signal so that voltage difference between public electrode and viewing angle control electrode is more than preset value, and with main pixel phase
The liquid crystal molecule of corresponding region is lying status.
Further, under the first field-of-view mode, the first voltage signal and common electrical that apply to viewing angle control electrode
The benchmark common voltage that pole applies is identical, and it is zero to make the voltage difference between public electrode and viewing angle control electrode；It is regarded at second
Under angle mould formula, the second voltage signal applied to viewing angle control electrode is alternating voltage, makes public electrode and viewing angle control electrode
Between voltage difference be more than zero.
The viewing angle control electrode for controlling visual angle is arranged in liquid crystal display device provided by the invention on the first substrate,
Each sub-pixel includes main pixel, the first sub-pixel and the second sub-pixel, liquid crystal in first sub-pixel and second sub-pixel
The alignment direction of molecule is mutually perpendicular to, and by applying viewing angle control voltage on viewing angle control electrode, is keeping main pixel point
Under the premise of liquid crystal molecule is in lying status, make to generate voltage difference between viewing angle control electrode and public electrode, in two bases
The region of corresponding multiple pixel portions is respectively formed vertical electric field between plate, makes the liquid crystal molecule in liquid crystal layer in the vertical electricity
It deflects under field action, realizes the liquid crystal display device in left and right directions and/or the visual angle of upper and lower directions adjusts.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of liquid crystal display device in first embodiment of the invention.
Fig. 2 is the partial structural diagram in Fig. 1.
Fig. 3 is the structural schematic diagram of viewing angle control electrode in Fig. 1.
Fig. 4 is the decomposition texture schematic diagram in Fig. 1.
Fig. 5 a to Fig. 5 d are arrangement signal of the negative liquid crystal molecule when viewing angle control electrode applies different voltages in Fig. 2
Figure.
Fig. 6 is the planar structure schematic diagram of liquid crystal display device in second embodiment of the invention.
Fig. 7 is the decomposition texture schematic diagram in Fig. 6.
Fig. 8 a to Fig. 8 d are arrangement signal of the positive liquid crystal molecules when viewing angle control electrode applies different voltages in Fig. 6
Figure.
Fig. 9 is the partial cutaway view of liquid crystal display device in third embodiment of the invention.
Specific implementation mode
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
Specific implementation mode, structure, feature and its effect of the present invention is described in detail as after in accompanying drawings and embodiments.
[first embodiment]
Fig. 1 is the planar structure schematic diagram of liquid crystal display device in first embodiment of the invention, and Fig. 2 is the part in Fig. 1
Structural schematic diagram, Fig. 3 are the structural schematic diagram of viewing angle control electrode in Fig. 1, and Fig. 4 is the decomposition texture schematic diagram in Fig. 1.It please join
Examine Fig. 1 to Fig. 4, which includes first substrate 21, the second substrate 22 that is oppositely arranged with first substrate 21 and
Liquid crystal layer 23 between first substrate 21 and second substrate 22.
Liquid crystal display device provided in this embodiment is suitable for plane inner switching type (IPS), fringe field switch type (FFS)
The liquid crystal display device of isotype, public electrode and pixel electrode are both formed in same substrate (i.e. thin-film transistor array base-plate)
On, when applying the electric field of display between public electrode and pixel electrode, liquid crystal molecule is in the plane substantially parallel with substrate
Interior rotation is to obtain wider visual angle.In the present embodiment, by taking fringe field switch type (FFS) as an example to the liquid crystal display device into
Row explanation.
Referring to FIG. 4, first substrate 21 is, for example, colored filter substrate, second substrate 22 is, for example, thin film transistor (TFT) battle array
Row substrate.First substrate 21 is being equipped with the first polaroid 211 backwards to the side of liquid crystal layer 23, and second substrate 22 is backwards to liquid crystal layer
23 side is equipped with the second polaroid 221, the light transmission shaft X2 phases of the light transmission shaft X1 of the first polaroid 211 and the second polaroid 221
It is mutually vertical.
Fig. 5 a to Fig. 5 d are arrangement signal of the negative liquid crystal molecule when viewing angle control electrode applies different voltages in Fig. 3
Figure.Incorporated by reference to Fig. 1 to Fig. 4 and 5a to Fig. 5 d, first substrate 21 is equipped with viewing angle control electrode in the side towards liquid crystal layer 23
212, second substrate 22 the side towards liquid crystal layer 23 be equipped with scan line 222, data line 223, thin film transistor (TFT) (TFT) 224,
Public electrode 225, insulating layer 226 and pixel electrode 227.
Wherein multi-strip scanning line 222 and multiple data lines 223 intersect the multiple sub- pictures for limiting and being formed in array distribution
Element.In the present embodiment, each sub-pixel is, for example, red (R), green (G), blue (B) sub-pixel, multiple adjacent sub-pixels
Constitute a pixel P for display.For example, a pixel may include red (R), green (G) and blue (B) three sub- pictures
Element, however, the present invention is not limited thereto.
In the present embodiment, each pixel includes three sub-pixels, i.e., each pixel includes main pixel SP1, the first sub-pixel
SP2 and the second sub-pixel SP3.Wherein main pixel electrode 227a is located in main pixel SP1, and first time, pixel electrode 227b was located at often
In a second sub-pixel SP2, second of pixel electrode 227c is located in each second sub-pixel SP3；First film transistor
224a is arranged in main pixel SP1, and the second thin film transistor (TFT) 224b is arranged in the first sub-pixel SP2, third thin film transistor (TFT)
224c is arranged in the second sub-pixel SP3.
Preferably, in the present embodiment, the area of first time pixel electrode 227b and second of pixel electrode 227c can phase
Deng specifically, first time pixel electrode 227b and second of pixel electrode 227c are for example plane-shape electrode.It is corresponding, the
The pixel openings area equation of one sub-pixel SP2 and the second sub-pixel SP3, but the first sub-pixel SP2 and the second sub-pixel SP3
The sum of pixel openings area is not more than the pixel openings area of main pixel SP1.In other embodiments, first time pixel electrode
227b and second of pixel electrode 227c can be gap electrode.
Incorporated by reference to Fig. 1 and Fig. 2, thin film transistor (TFT) (224a, 224b, 224c) is located at scan line 222 and intersects with data line 223
Position near.Thin film transistor (TFT) (224a, 224b, 224c) and corresponding scan line 222 and data line 223 and electrode are electrical
Connection.Each thin film transistor (TFT) (224a, 224b, 224c) includes grid, semiconductor layer, source electrode and drain electrode (not shown), wherein
Grid is electrically connected corresponding scan line 222, and source electrode and drain electrode is spaced from each other and is connected with semiconductor layer, source electrode with
One of drain electrode is electrically connected corresponding data line 223, source electrode electrode corresponding with the electric connection that one of drains.
Referring to FIG. 1, main pixel electrode 227a includes spaced multiple first pixel electrode items 2271, adjacent
The first slit 2273 is formed between one pixel electrode item 2271.
Incorporated by reference to Fig. 1 and Fig. 2, liquid crystal layer 23 uses negative liquid crystal molecule, negativity liquid corresponding with each main pixel SP1
The orientation of brilliant molecule extends along the direction of scan line 222, negative liquid crystal molecule corresponding with each first sub-pixel SP2
Orientation extends along the direction of scan line 222, the orientation of negative liquid crystal molecule corresponding with each second sub-pixel SP3 along
The direction of data line 223 extends.
It please join Fig. 2 and Fig. 3, in the present embodiment, sub-pixel is arranged respectively along scan line 222 and 223 direction of data line
Row are embarked on journey.
Tin indium oxide (ITO), oxidation specifically can be used in viewing angle control electrode 212, public electrode 225 and pixel electrode 227
The electrically conducting transparents materials such as indium zinc (IZO) are made for transparent electrode.Viewing angle control electrode 212 is for controlling view angle switch.Common electrical
Pole 225 is for applying the common voltage that picture is shown.It is aobvious that pixel electrode 227 controls progress picture for receiving data-signal
Show.
In the present embodiment, pixel electrode 227 is located at 225 top of public electrode, is equipped with insulating layer 226, but this between the two
Invent without being limited thereto, in other embodiments, pixel electrode 227 can also be located at the lower section of public electrode 225.In addition, working as the liquid
When crystal device uses plane inner switching type (IPS) pattern, public electrode 225 and pixel electrode 227 may be located on same
In layer and mutually insulated is spaced apart, such as public electrode 225 and pixel electrode 227.
Incorporated by reference to Fig. 3 and Fig. 4, in the present embodiment, viewing angle control electrode 212 includes the first electrode portion of mutually insulated
212a, second electrode portion 212b and third electrode section 212c, first electrode portion 212a, which is corresponded to, covers main pixel SP1, the second electricity
Pole portion 212b corresponds to covering the first sub-pixel SP2, third electrode section 212c and corresponds to the second sub-pixel SP3 of covering.The picture because based on
The corresponding liquid crystal molecule of plain SP1 is constantly in lying status under any visual angle, in other embodiments, viewing angle control electrode
212 can only include the second electrode portion 212b of mutually insulated and third electrode section 212c, and viewing angle control electrode 212 corresponds to
The region of main pixel SP1 can be not provided with electrode section.
Please continue to refer to Fig. 3 and Fig. 4, in the present embodiment, the liquid crystal molecule in liquid crystal layer 23 is negative liquid crystal molecule.First
Be A1 with the alignment direction of each main pixel SP1 opposite positions on substrate 21, on first substrate 21 with each first sub-pixel
The alignment direction of SP2 opposite positions is A2, the orientation side on first substrate 21 with each second sub-pixel SP3 opposite positions
To for A3；Be B1 with the alignment direction of each main pixel SP1 opposite positions on second substrate 22, on second substrate 22 with it is each
The alignment direction of first sub-pixel SP2 opposite positions is B2, position corresponding with each second sub-pixel SP3 on second substrate 22
The alignment direction set is B3.Liquid crystal molecule in liquid crystal layer 23 is arranged along the alignment direction on first substrate 21 and second substrate 22
Row, initial arrangement direction of the liquid crystal molecule in the first sub-pixel SP2 and the second sub-pixel SP3 are orthogonal.
The present embodiment can carry out orientation to first substrate 21 and second substrate 22 respectively by way of light orientation, and light is matched
Orientation is carried out to main pixel SP1, the first sub-pixel SP2 and the second sub-pixel SP3 to the modes such as mask can be used to realize respectively.
In other embodiments, can also by way of the subregion orientation that rubs respectively to main pixel SP1, the first sub-pixel SP2 and
Second sub-pixel SP3 carries out orientation.
Further, correspond to each main pixel SP1, the alignment direction A1 on first substrate 21 on second substrate 22
Alignment direction B1 parallel or antiparallel (being antiparallel in the present embodiment)；Corresponding to each first sub-pixel SP2, first
Alignment direction A2 on substrate 21 parallel or antiparallel with the alignment direction B2 on second substrate 22 (is anti-in the present embodiment
To parallel)；Corresponding to each second sub-pixel SP3, the alignment direction A3 on first substrate 21 and the orientation on second substrate 22
Direction B3 parallel or antiparallel (being antiparallel in the present embodiment).
By applying voltage on viewing angle control electrode 212, can viewing angle control electrode 212 and public electrode 225 it
Between generate different voltage differences, so that the liquid crystal display device is switched between wide viewing angle pattern and narrow viewing angle pattern, it is specific as schemed
Shown in 5a to Fig. 5 d.
It please join Fig. 5 a, under the original state that the liquid crystal display device does not apply any voltage, be located at each main pixel SP1
Negative liquid crystal molecule in region is arranged for low pre-tilt angle, i.e., the negative liquid crystal molecule in the region is close in the initial state
In lying status；It is negative in the liquid crystal molecule and each regions second sub-pixel SP3 in each regions first sub-pixel SP2
Property liquid crystal molecule be the setting of high pre-tilt angle, i.e., the negative liquid crystal molecule in two regions is skewed in the initial state
State.At this point, the liquid crystal display device is to be in left and right directions narrow viewing angle with upper and lower directions.
Fig. 5 b are please referred to, when the voltage for applying display on pixel electrode 227, first electrode portion 212a and third electrode portion
Divide 212c between public electrode 225 when the voltage difference of no applied voltage difference or application very little, and in second electrode portion 212b
When applying a certain size voltage difference between public electrode 225, therefore each first can be corresponded between two substrates 21,22
The region of sub-pixel SP2 forms vertical electric field (as shown in arrow E in figure), due to negative liquid crystal molecule under electric field action its grow
Axis direction has the tendency that rotating along perpendicular to electric field line direction, therefore the negative liquid crystal molecule in each first sub-pixel SP2
It deflects under vertical electric field effect, angle of inclination between first substrate 21, second substrate 22 reduces, and from inclination
Posture deflects into the posture that lies low.Negative liquid crystal molecule in each first sub-pixel SP2 occurs under vertical electric field effect
Deflection, makes the visual angle of the liquid crystal display device in the lateral direction increase small, in the lateral direction to the liquid crystal display device
Wide viewing angle is switched to, at this point, the liquid crystal display device is narrow viewing angle in above-below direction.
Fig. 5 c are please referred to, when the voltage for applying display on pixel electrode 227, first electrode portion 212a and second electrode portion
When 212b no applied voltages between public electrode 225 are poor or apply the voltage difference of very little, and in third electrode section 212c
When applying a certain size voltage difference between public electrode 225, therefore each second can be corresponded between two substrates 21,22
The region of sub-pixel SP3 forms vertical electric field (as shown in arrow E in figure), due to negative liquid crystal molecule under electric field action long axis
Direction has the tendency that rotating along perpendicular to electric field line direction, therefore the negative liquid crystal molecule in each second sub-pixel SP3 exists
It deflects under vertical electric field effect, angle of inclination between first substrate 21, second substrate 22 reduces, and from tilting appearance
State deflects into the posture that lies low.Negative liquid crystal molecule in each second sub-pixel SP3 occurs inclined under vertical electric field effect
Turn, so that the visual angle of the liquid crystal display device in the up-down direction is increased small, in the up-down direction to the liquid crystal display device
Wide viewing angle is switched to, at this point, the liquid crystal display device is narrow viewing angle in left and right directions.
Fig. 5 d are please referred to, when the voltage for applying display on pixel electrode 227, first electrode portion 212a and public electrode
Between 225 no applied voltage difference or apply very little voltage difference when, and second electrode portion 212b, third electrode section 212c with
When applying a certain size voltage difference between public electrode 225, therefore each first time can be corresponded between two substrates 21,22
The region formation vertical electric field (as shown in arrow E in figure) of pixel SP2, the second sub-pixel SP3, since negative liquid crystal molecule is in electricity
Long axis direction has the tendency that rotating along being parallel to electric field line direction under field action, thus each first sub-pixel SP2, second
Negative liquid crystal molecule in pixel SP3 deflects under vertical electric field effect, between first substrate 21, second substrate 22
Angle of inclination reduce, and deflect into the posture that lies low from lateral attitude.In each first sub-pixel SP2 and the second sub-pixel SP3
Negative liquid crystal molecule the vertical electric field effect under deflect, make the liquid crystal display device in left and right directions and upper and lower
Upward visual angle increases, to the liquid crystal display device in left and right directions with switch to wide viewing angle in upper and lower directions.
In the present embodiment, the voltage exported to public electrode 225 is direct current common voltage (i.e. DC Vcom), is controlled to visual angle
The voltage that electrode 212 processed exports is the periodic AC voltage fluctuated up and down centered on the direct current common voltage.The exchange
The waveform of voltage is specifically as follows square wave, sine wave, triangular wave or sawtooth wave etc..
It is non-on the periphery of the liquid crystal display device in order to apply voltage to the viewing angle control electrode 212 on first substrate 21
Display area can be electrically conducted viewing angle control electrode 212 to second substrate from first substrate 21 by conducting resinl (not shown)
22, provided on voltage to second substrate 22 by driving chip (not shown), then by second substrate 22 by conducting resinl by voltage
It is applied on the viewing angle control electrode 212 of first substrate 21.
[second embodiment]
Fig. 6 is the planar structure schematic diagram of liquid crystal display device in second embodiment of the invention, and Fig. 7 is the decomposition in Fig. 6
Structural schematic diagram, Fig. 8 a to Fig. 8 d are that arrangement of the positive liquid crystal molecules when viewing angle control electrode applies different voltages is shown in Fig. 6
It is intended to.Difference lies in the present embodiment, liquid crystal layer 23 uses positive liquid crystal molecules for the present embodiment and first embodiment.
Incorporated by reference to Fig. 6 and Fig. 7, on first substrate 21 and the alignment direction of each main pixel SP1 opposite positions is A1, the
With the alignment direction of each first sub-pixel SP2 opposite positions it is A2 on one substrate 21, with each second on first substrate 21
The alignment direction of sub-pixel SP3 opposite positions is A3；On second substrate 22 with the orientation of each main pixel SP1 opposite positions
Direction is B1, is B2 with the alignment direction of each first sub-pixel SP2 opposite positions on second substrate 22, on second substrate 22
Alignment direction with each second sub-pixel SP3 opposite positions is B3.Liquid crystal molecule in liquid crystal layer 23 is along first substrate
21 and second substrate 22 on alignment direction arrangement, liquid crystal molecule is initial in the first sub-pixel SP2 and the second sub-pixel SP3
Orientation is orthogonal.
The present embodiment can carry out orientation to first substrate 21 and second substrate 22 respectively by way of light orientation, and light is matched
Orientation is carried out to main pixel SP1, the first sub-pixel SP2 and the second sub-pixel SP3 to the modes such as mask can be used to realize respectively.
In other embodiments, can also by way of the subregion orientation that rubs respectively to main pixel SP1, the first sub-pixel SP2 and
Second sub-pixel SP3 carries out orientation.
Further, correspond to each main pixel SP1, the alignment direction A1 on first substrate 21 on second substrate 22
Alignment direction B1 parallel or antiparallel (being antiparallel in the present embodiment)；Corresponding to each first sub-pixel SP2, first
Alignment direction A2 on substrate 21 parallel or antiparallel with the alignment direction B2 on second substrate 22 (is anti-in the present embodiment
To parallel)；Corresponding to each second sub-pixel SP3, the alignment direction A3 on first substrate 21 and the orientation on second substrate 22
Direction B3 parallel or antiparallel (being antiparallel in the present embodiment).
By applying voltage on viewing angle control electrode 212, can viewing angle control electrode 212 and public electrode 225 it
Between generate different voltage differences, so that the liquid crystal display device is switched between wide viewing angle pattern and narrow viewing angle pattern, it is specific as schemed
Shown in 8a to Fig. 8 d.
It please join Fig. 8 a, under the original state that the liquid crystal display device does not apply any voltage, the positivity in liquid crystal layer 23
Liquid crystal molecule arranges along alignment direction and the lie low posture parallel with first substrate 21, second substrate 22 is presented, wherein being located at
Liquid crystal molecule in each main pixel SP1 is arranged along alignment direction A1, B1, the liquid crystal being located in each first sub-pixel SP2
Molecule is arranged along alignment direction A2, B2, is located at the liquid crystal molecule in each second sub-pixel SP3 along alignment direction A3, B3
Arrangement.The long axis direction of positive liquid crystal molecules is substantially parallel with the surface of first substrate 21, second substrate 22.In practical application
In, it can be with the initial pre-dumping of very little between the positive liquid crystal molecules in liquid crystal layer 23 and first substrate 21, second substrate 22
The range at angle, the initial pre-tilt angle may be less than or be equal to 5 degree, i.e.,：0°≦θ≦5°.At this time due on pixel electrode 227 not
Apply the voltage of display, liquid crystal molecule does not rotate in the plane parallel with first substrate 21, second substrate 22, the liquid
Black state is presented in crystal device.
Fig. 8 b are please referred to, when the voltage for applying display on pixel electrode 227, first electrode portion 212a and third electrode portion
Divide 212c between public electrode 225 when the voltage difference of no applied voltage difference or application very little, and in second electrode portion 212b
When applying a certain size voltage difference between public electrode 225, therefore each first can be corresponded between two substrates 21,22
The region of sub-pixel SP2 forms vertical electric field (as shown in arrow E in figure), due to positive liquid crystal molecules under electric field action long axis
Direction has the tendency that rotating along being parallel to electric field line direction, therefore the positive liquid crystal molecules in each first sub-pixel SP2 exist
It deflects under vertical electric field effect, angle of inclination between first substrate 21, second substrate 22 increases, and from the appearance that lies low
State deflects into lateral attitude.Positive liquid crystal molecules in each first sub-pixel SP2 occur inclined under vertical electric field effect
Turn, the visual angle of the liquid crystal display device in the up-down direction is made to reduce, to which the liquid crystal display device is cut in the up-down direction
Shift to narrow viewing angle.
Fig. 8 c are please referred to, when the voltage for applying display on pixel electrode 227, first electrode portion 212a and second electrode portion
When 212b no applied voltages between public electrode 225 are poor or apply the voltage difference of very little, and in third electrode section 212c
When applying a certain size voltage difference between public electrode 225, therefore each second can be corresponded between two substrates 21,22
The region of sub-pixel SP3 forms vertical electric field (as shown in arrow E in figure), due to positive liquid crystal molecules under electric field action long axis
Direction has the tendency that rotating along being parallel to electric field line direction, therefore the positive liquid crystal molecules in each second sub-pixel SP3 exist
It deflects under vertical electric field effect, angle of inclination between first substrate 21, second substrate 22 increases, and from the appearance that lies low
State deflects into lateral attitude.Positive liquid crystal molecules in each second sub-pixel SP3 occur inclined under vertical electric field effect
Turn, so that the visual angle of the liquid crystal display device in the lateral direction is reduced, to make the liquid crystal display device in the lateral direction
Switch to narrow viewing angle.
Fig. 8 d are please referred to, when the voltage for applying display on pixel electrode 227, first electrode portion 212a and public electrode
Between 225 no applied voltage difference or apply very little voltage difference when, and second electrode portion 212b, third electrode section 212c with
When applying a certain size voltage difference between public electrode 225, therefore each first time can be corresponded between two substrates 21,22
The region formation vertical electric field (as shown in arrow E in figure) of pixel SP2, the second sub-pixel SP3, since positive liquid crystal molecules are in electricity
Long axis direction has the tendency that rotating along being parallel to electric field line direction under field action, thus each first sub-pixel SP2, second
Positive liquid crystal molecules in pixel SP3 deflect under vertical electric field effect, between first substrate 21, second substrate 22
Angle of inclination increase, and deflect into lateral attitude from the posture that lies low.In each first sub-pixel SP2 and the second sub-pixel SP3
Positive liquid crystal molecules the vertical electric field effect under deflect, make the liquid crystal display device in left and right directions and upper and lower
Upward visual angle reduces, to the liquid crystal display device in left and right directions with switch to narrow viewing angle in upper and lower directions.
In the present embodiment, the voltage exported to public electrode 225 is direct current common voltage (i.e. DC Vcom), is controlled to visual angle
The voltage that electrode 212 processed exports is the periodic AC voltage fluctuated up and down centered on the direct current common voltage.The exchange
The waveform of voltage is specifically as follows square wave, sine wave, triangular wave or sawtooth wave etc..
It is non-on the periphery of the liquid crystal display device in order to apply voltage to the viewing angle control electrode 212 on first substrate 21
Display area can be electrically conducted viewing angle control electrode 212 to second substrate from first substrate 21 by conducting resinl (not shown)
22, provided on voltage to second substrate 22 by driving chip (not shown), then by second substrate 22 by conducting resinl by voltage
It is applied on the viewing angle control electrode 212 of first substrate 21.
[3rd embodiment]
Fig. 9 is the partial cutaway view of liquid crystal display device in third embodiment of the invention.Referring to FIG. 3, the present embodiment with
Second embodiment difference lies in, the region that each main pixel SP1 is corresponded on second substrate 22 is provided with public electrode 225,
Region on second substrate 22 corresponding to each first sub-pixel SP2 and each second sub-pixel SP3 is not provided with common electrical
Pole 225.The also included other structures of the present embodiment and element, please refer to second embodiment.
When the voltage for applying display on pixel electrode 227, do not apply between first electrode portion 212a and public electrode 225
Voltage difference or apply very little voltage difference when, and second electrode portion 212b, third electrode section 212c and pixel electrode 227 it
Between when applying a certain size voltage difference, therefore each first sub-pixel SP2, second can be corresponded between two substrates 21,22
The region of sub-pixel SP3 forms vertical electric field, to make the liquid crystal display device in left and right directions with switch in upper and lower directions
To narrow viewing angle.Likewise, in the present embodiment, under any field-of-view mode, the main pixel SP1 of each of the liquid crystal display device is corresponded to
The liquid crystal molecule in region is in lying status.
When no applied voltage difference between second electrode portion 212b, third electrode section 212c and pixel electrode 227 or apply
When the voltage difference of very little, which is that comprehensive wide viewing angle is shown.
When only applying a certain size voltage difference or only between second electrode portion 212b and first time pixel electrode 227b
When applying a certain size voltage difference between third electrode section 212c and second of pixel electrode 227c, then the liquid crystal display
Device only switches to narrow viewing angle in the lateral direction in above-below direction or only.
The present invention also provides a kind of view angle switch method of liquid crystal display device, which includes：
Under the first field-of-view mode, the public electrode 225 on second substrate 22 applies benchmark common voltage, to first
It is public that the second electrode portion 212b and third electrode section 212c of viewing angle control electrode 212 on substrate 21 apply the opposite benchmark
Voltage has the first voltage signal compared with small pressure difference so that the voltage difference between public electrode 225 and viewing angle control electrode 212 is small
In preset value, and the liquid crystal molecule in region corresponding with main pixel SP1 is lying status；
Under second of field-of-view mode, the public electrode 225 on second substrate 22 applies benchmark common voltage, to first
It is public that the second electrode portion 212b and third electrode section 212c of viewing angle control electrode 212 on substrate 21 apply the opposite benchmark
Voltage has the second voltage signal of larger pressure difference so that the voltage difference between public electrode 225 and viewing angle control electrode 212 is big
In preset value, and the liquid crystal molecule in region corresponding with main pixel SP1 is lying status.
Further, under the first field-of-view mode, to viewing angle control electrode 212 apply first voltage signal with it is public
The benchmark common voltage that electrode 225 applies is identical, and it is zero to make the voltage difference between public electrode 225 and viewing angle control electrode 212；
Under second of field-of-view mode, the second voltage signal applied to viewing angle control electrode 212 is alternating voltage, makes public electrode
Voltage difference between 225 and viewing angle control electrode 212 is more than zero.
Further, when liquid crystal layer 30 using positive liquid crystal molecules when, the first field-of-view mode be wide viewing angle pattern, second
Kind field-of-view mode is narrow viewing angle pattern；When liquid crystal layer 30 is using negative liquid crystal molecule, the first field-of-view mode is narrow viewing angle mould
Formula, second of field-of-view mode are wide viewing angle pattern.
The present invention by control be applied to viewing angle control electrode 212 first electrode portion 212a, second electrode portion 212b and
Voltage on third electrode section 212c makes to generate different size of voltage difference between each electrode section and public electrode 225,
The region of corresponding different subpixel forms vertical electric field between first substrate 21, second substrate 22, makes in liquid crystal layer 23
Liquid crystal molecule deflects under vertical electric field effect, causes light leakage phenomena occur and the contrast of screen is made to reduce, makes this
Liquid crystal display device is in left and right directions and/or the visual angle of upper and lower directions reduces, to realize on upper and lower directions and/or left and right directions
Wide viewing angle and narrow viewing angle free switching, there is stronger operating flexibility and convenience.
Herein, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, are removed
Comprising those of listed element, but also it may include other elements that are not explicitly listed.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of liquid crystal display device, including first substrate (21), second substrate (22) and it is located at the first substrate (21)
Liquid crystal layer (23) between the second substrate (22), the first substrate (21) are equipped with viewing angle control electrode (212), institute
It states and is provided with public electrode (225) on second substrate (22), by scan line (222) and data line on the second substrate (22)
(223) it limits and forms multiple pixels (P), which is characterized in that each pixel (P) includes main pixel (SP1), the first sub-pixel
(SP2) and the second sub-pixel (SP3), the alignment direction of the interior liquid crystal molecule of first sub-pixel (SP2) and second of picture
The alignment direction of plain (SP3) interior liquid crystal molecule is mutually perpendicular to, and the liquid crystal molecule in the main pixel (SP1) is in different visual angles pattern
Under be lying status；Equipped with the main pixel electrode for including multiple pixel electrode items (2271) in each main pixel (SP1)
(227a), each first sub-pixel (SP2) is interior to be equipped with first time pixel electrode (227b), is set in each second sub-pixel (SP3)
There is second of pixel electrode (227c).
2. liquid crystal display device as described in claim 1, which is characterized in that the viewing angle control electrode (212) includes mutual
The first electrode portion (212a) of insulation, second electrode portion (212b) and third electrode section (212c), the first electrode portion
(212a) is corresponding to cover the main pixel (SP1), and the second electrode portion (212b) is corresponding to cover first sub-pixel
(SP2), the third electrode section (212c) is corresponding covers second sub-pixel (SP3).
3. liquid crystal display device as claimed in claim 2, which is characterized in that the first electrode portion (212a) includes multiple electricity
Property connection the first conductive bar (2121), the second electrode portion (212b) includes the second conductive bar of multiple electric connections
(2122), the third electrode section (212c) includes the third conductive bar (2123) of multiple electric connections.
4. liquid crystal display device as described in claim 1, which is characterized in that the viewing angle control electrode (212) includes mutual
The second electrode portion (212b) of insulation and third electrode section (212c), the corresponding covering of the second electrode portion (212b) described the
One sub-pixel (SP2), the third electrode section (212c) is corresponding to cover second sub-pixel (SP3).
5. liquid crystal display device as described in claim 1, which is characterized in that the first time pixel electrode (227b) with it is described
The area equation of second of pixel electrode (227c), the pixel of first sub-pixel (SP2) and second sub-pixel (SP3)
Opening area is equal, and the sum of the pixel openings area of first sub-pixel (SP2) and second sub-pixel (SP3) is not more than
The pixel openings area of the main pixel (SP1).
6. liquid crystal display device as described in claim 1, which is characterized in that correspond on the second substrate (22) each main
The region of pixel (SP1) is provided with the public electrode (225), corresponds to each first sub-pixel on the second substrate (22)
(SP2) and the region of each second sub-pixel (SP3) is not provided with the public electrode (225).
7. liquid crystal display device as described in claim 1, which is characterized in that correspond on the second substrate (22) each main
The region of pixel (SP1), each first sub-pixel (SP2) and each second sub-pixel (SP3) is both provided with the public electrode
(225)。
8. liquid crystal display device as described in claim 1, which is characterized in that the liquid crystal layer (23) is using negative liquid crystal point
The orientation of son, negative liquid crystal molecule corresponding with each main pixel (SP1) extends along the direction of the scan line (222),
The orientation of negative liquid crystal molecule corresponding with each first sub-pixel (SP2) extends along the direction of the scan line (222),
The orientation of negative liquid crystal molecule corresponding with each second sub-pixel (SP3) extends along the direction of the data line (223).
9. a kind of view angle switch method of liquid crystal display device, which is characterized in that the view angle switch method includes：
Under the first field-of-view mode, the public electrode (225) on second substrate (22) applies benchmark common voltage, to first
The second electrode portion (212b) of viewing angle control electrode (212) on substrate (21) and third electrode section (212c) apply opposite be somebody's turn to do
Benchmark common voltage has the first voltage signal compared with small pressure difference so that the public electrode (225) and viewing angle control electricity
Voltage difference between pole (212) is less than preset value, and the liquid crystal molecule in region corresponding with main pixel (SP1) is lying status；
Under second of field-of-view mode, the public electrode (225) on second substrate (22) applies benchmark common voltage, to first
The second electrode portion (212b) of viewing angle control electrode (212) on substrate (21) and third electrode section (212c) apply opposite be somebody's turn to do
Benchmark common voltage has the second voltage signal of larger pressure difference so that the public electrode (225) and viewing angle control electricity
Voltage difference between pole (212) is more than preset value, and the liquid crystal molecule in region corresponding with main pixel (SP1) is lying status.
10. view angle switch method as claimed in claim 9, which is characterized in that under the first field-of-view mode, to the visual angle
The first voltage signal that coordination electrode (212) applies is identical as the benchmark common voltage that the public electrode (225) applies, and makes institute
The voltage difference stated between public electrode (225) and the viewing angle control electrode (212) is zero；Under second of field-of-view mode, to
The second voltage signal that the viewing angle control electrode (212) applies is alternating voltage, and the public electrode (225) is made to be regarded with described
Voltage difference between angle coordination electrode (212) is more than zero.
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