CN110187527A - Liquid crystal display device and driving method thereof - Google Patents
Liquid crystal display device and driving method thereof Download PDFInfo
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- CN110187527A CN110187527A CN201910146933.4A CN201910146933A CN110187527A CN 110187527 A CN110187527 A CN 110187527A CN 201910146933 A CN201910146933 A CN 201910146933A CN 110187527 A CN110187527 A CN 110187527A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 249
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005684 electric field Effects 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims description 66
- 238000003475 lamination Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 11
- 208000004350 Strabismus Diseases 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000004088 simulation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003287 optical 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
- G02F1/1323—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
- G02F1/13306—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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
According to the liquid crystal display device and the driving method thereof provided by the embodiment of the invention, the oblique electric field is formed between the first electrode and the second electrode, the positive liquid crystal molecules in the visual angle control panel deflect along the direction of the electric field to modulate light, and the deflection direction of the liquid crystal molecules in the liquid crystal display panel is different from that of the positive liquid crystal molecules in the visual angle control panel, so that the light rays passing through the liquid crystal molecules of the two panels generate phase delay, and a dark state light leakage phenomenon appears in the oblique viewing direction of a screen of the liquid crystal display device, so that the contrast on the screen is reduced, the oblique viewing is fuzzy, the viewing effect is influenced, and the narrow visual angle display mode of the liquid crystal display device is realized; when the first electrode and the second electrode are not applied with voltage, liquid crystal molecules in the visual angle control panel do not deflect, light is not modulated, light leakage is not generated in a dark state, and therefore the contrast ratio cannot be reduced, the contrast ratio of a picture observed when human eyes see obliquely cannot be reduced, observation is clear, and the wide visual angle display mode of the liquid crystal display device is achieved.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of liquid crystal display device and its driving method.
Background technique
Liquid crystal display (Liquid Crystal Display, LCD) has many advantages, such as frivolous, energy saving, radiationless,
Therefore traditional cathode-ray tube (CRT) display has been gradually replaced.Currently, liquid crystal display is widely used in high-resolution
In the electronic equipments such as DTV, desktop computer, personal digital assistant (PDA), laptop, digital camera.
Currently, wide viewing angle belongs to the mainstream development direction of liquid crystal display.For example, laptop, personal digital assistant,
The portable electronic device etc. of the wide viewing angles such as tablet computer, mobile phone is all made of wide viewing angle technology, so that people are from difference
Direction viewing wide viewing angle display when can see complete and distortionless picture.But when be related to individual privacy with
And when important information, the use of the display of wide viewing angle in some cases can also make people feel inconvenient, for example, AT STATION etc.
The people at Che Shi, user side and rear very likely gets a glimpse of on the screen of the portable electronic device of the wide viewing angle of user
Content.
Therefore, other than the demand of wide viewing angle, under the occasion for needing peep-proof, can display be switched or is adjusted to
The display of narrow viewing angle mode also has gradually developed.Currently, what the wide viewing angle and narrow viewing angle to liquid crystal display switched over
Common implementation has: (1) increasing a narrow viewing angle film, put and realize narrow viewing angle over the display, remove narrow viewing angle film and realize width
Visual angle, but such case is very inconvenient；(2) ITO electrode is set on color membrane substrates, increases vertical direction electric field, controls liquid
The rotation of brilliant molecule in vertical direction realizes that visual angle is changeable, but this mode design difficulty is high, and technology difficulty is high, and deposits
In many inherent shortcomings, such as ghost is poor, wide viewing angle luminance loss.
Therefore, it is necessary to provide improved technical solution to overcome the above technical problem existing in the prior art.
Summary of the invention
The embodiment of the present invention provides a kind of liquid crystal display device and its driving method, the liquid crystal display device can be realized width
Arbitrary switch between visual angle and narrow viewing angle and be not in the above-mentioned problem in the prior art, and design it is simple,
Technique production is simple, and in narrow viewing angle, the transmitance of liquid crystal display device is unaffected under positive apparent direction, and display effect is preferable.
A kind of liquid crystal display device provided in an embodiment of the present invention, liquid crystal display panel and visual angle control including lamination setting
Panel processed, the viewing-angle control panel includes the first substrate being oppositely arranged and the second substrate, and is located at the first substrate
The first liquid crystal layer between the second substrate；Liquid crystal molecule in first liquid crystal layer is positive liquid crystal molecules；
The first substrate towards the second substrate surface have multiple first electrodes being independently arranged, described second
Substrate has multiple second electrodes being independently arranged towards the surface of the first substrate；Wherein, the first electrode and described
The orthographic projection of second electrode on the first substrate is staggered and does not overlap；
When the first electrode and the second electrode are applied voltage in the first electrode and the second electrode
Between formed electric field when, the liquid crystal molecule of first liquid crystal layer is deflected along the direction of an electric field, and the liquid crystal display device is
Narrow viewing angle display pattern；
When the first electrode and the second electrode are not applied to voltage, the liquid crystal molecule of first liquid crystal layer is not
It deflects, the liquid crystal display device is wide viewing angle display pattern.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, described first
On substrate between the adjacent first electrode of orthographic projection and the central point line and the first substrate of the second electrode
Angle is 30 °~60 ° or 120 °~150 °.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, adjacent described
Angle between the central point line of the adjacent side of one electrode and the second electrode and the first substrate is 45 °.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, first electricity
Pole and the second electrode are strip shaped electric poles, and first electrode described in arbitrary neighborhood and the second electrode are in first base
The spacing between orthographic projection center on plate is equal.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, first electricity
Voltage difference between pole and the second electrode is greater than 4V.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, the liquid crystal
Show that panel includes the third substrate and tetrabasal being oppositely arranged, and between the third substrate and the tetrabasal
The second liquid crystal layer；Wherein, the viewing-angle control panel is located at the incident side or light emission side of the liquid crystal display panel.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, when the visual angle
When control panel is located at the incident side of the liquid crystal display panel, the second substrate and the third substrate are same substrate；
When the viewing-angle control panel is located at the light emission side of the liquid crystal display panel, the first substrate and the tetrabasal are
Same substrate.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, first liquid
The long axis extending direction of liquid crystal molecule in crystal layer and the long axis extending direction of the liquid crystal molecule in second liquid crystal layer are mutual
Vertically or it is parallel to each other.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, first liquid
Liquid crystal molecule in crystal layer is 0 °~5 ° relative to the first substrate and the initial pre-tilt angle of the second substrate.
Optionally, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, first electricity
The material of pole and the second electrode is transparent conductive material.
Correspondingly, the embodiment of the invention also provides a kind of driving methods of liquid crystal display device, comprising:
When the first electrode and the second electrode are applied voltage in the first electrode and the second electrode
Between formed electric field when, the liquid crystal molecule of first liquid crystal layer is deflected along the direction of an electric field, and the liquid crystal display device is
Narrow viewing angle display pattern；
When the first electrode and the second electrode are not applied to voltage, the liquid crystal molecule of first liquid crystal layer is not
It deflects, the liquid crystal display device is wide viewing angle display pattern.
The present invention has the beneficial effect that:
Liquid crystal display device and its driving method provided in an embodiment of the present invention, the liquid crystal display device pass through setting and liquid
The viewing-angle control panel of LCD panel lamination setting, since the first electrode and second electrode of viewing-angle control panel are staggered
And orthographic projection does not overlap, therefore when applying voltage to first electrode and second electrode, it can be in first electrode and the second electricity
Oblique electric field is formed between pole, then the long axis of the positive liquid crystal molecules in viewing-angle control panel along direction of an electric field deflect, to light into
Row modulation is caused in two panels due to different from the long axis of the liquid crystal molecule in liquid crystal display panel deflection direction
Phase delay occurs for the light of liquid crystal molecule, causes dark-state light leakage occur on the screen strabismus direction of the liquid crystal display device existing
As, so that the contrast on screen reduces, and it is fuzzy when strabismus is observed, viewing effect is influenced, to realize that liquid crystal display fills
The narrow viewing angle display pattern set；Liquid crystal point when first electrode and second electrode are not applied to voltage, in viewing-angle control panel
Son does not deflect, and to light without modulation, dark-state does not generate light leakage, so that contrast will not decline, when human eye is squinted
The contrast for the picture observed will not decline, and observation is clear, to realize the wide viewing angle display pattern of liquid crystal display device.Separately
Outside, liquid crystal display device provided by the invention can not only realize the arbitrary switch between wide viewing angle and narrow viewing angle, and double-deck
The structure design of structure is simple, technique production is simple, and viewing-angle control panel and liquid crystal display panel separate, in narrow viewing angle
When, the transmitance of liquid crystal display device is unaffected under positive apparent direction, and display effect is preferable.
Detailed description of the invention
Fig. 1 is a kind of one of the schematic diagram of the section structure of liquid crystal display device provided in an embodiment of the present invention；
Fig. 2 is the two of a kind of the schematic diagram of the section structure of liquid crystal display device provided in an embodiment of the present invention；
Fig. 3 is the display simulation drawing under a kind of corresponding narrow viewing angle of liquid crystal display device provided in an embodiment of the present invention；
Fig. 4 is the display simulation drawing under a kind of corresponding wide viewing angle of liquid crystal display device provided in an embodiment of the present invention；
Fig. 5 is the three of a kind of the schematic diagram of the section structure of liquid crystal display device provided in an embodiment of the present invention；
Fig. 6 is the deflection schematic diagram of liquid crystal molecule in a kind of liquid crystal display device provided in an embodiment of the present invention；
Fig. 7 is the four of a kind of the schematic diagram of the section structure of liquid crystal display device provided in an embodiment of the present invention；
Fig. 8 is the five of a kind of the schematic diagram of the section structure of liquid crystal display device provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose of the present invention, the technical scheme and advantages are more clear, with reference to the accompanying drawing, to the embodiment of the present invention
The liquid crystal display device of offer and its specific embodiment of driving method are described in detail.It should be appreciated that being retouched below
The preferred embodiment stated is only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.And in the absence of conflict,
The features in the embodiments and the embodiments of the present application can be combined with each other.It should be noted that each layer film thickness in attached drawing
With the actual proportions of shape not reflecting liquid crystal display device, purpose is schematically illustrate the content of present invention.And phase from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.
With reference to the accompanying drawing, the present invention is described in detail.It should be noted that being in order to better in the present embodiment
It explains the present invention, but does not limit the present invention.
The embodiment of the invention provides a kind of liquid crystal display devices, as shown in Figure 1, including the LCD display of lamination setting
Plate 100 and viewing-angle control panel 200, viewing-angle control panel 200 include the first substrate 10 being oppositely arranged and the second substrate 20, with
And the first liquid crystal layer 1 between first substrate 10 and the second substrate 20；Liquid crystal molecule in first liquid crystal layer 1 is positivity liquid
Brilliant molecule；
First substrate 10 has multiple first electrodes 2 being independently arranged, the second substrate 20 towards the surface of the second substrate 20
Surface towards first substrate 10 has multiple second electrodes 3 being independently arranged；Wherein, first electrode 2 and second electrode 3 are
Orthographic projection on one substrate 10 is staggered and does not overlap；
As shown in Fig. 2, when first electrode 2 and second electrode 3 be applied voltage with first electrode 2 and second electrode 3 it
Between when forming electric field, the liquid crystal molecule of the first liquid crystal layer 1 is deflected along direction of an electric field (shown in black arrow), and liquid crystal display device is
Narrow viewing angle display pattern, the visual angle simulation schematic diagram under corresponding narrow viewing angle display pattern are as shown in Figure 3；
When first electrode 2 and second electrode 3 are not applied to voltage, the liquid crystal molecule of the first liquid crystal layer 1 does not deflect,
Liquid crystal display device is wide viewing angle display pattern, and the visual angle simulation schematic diagram under corresponding wide viewing angle display pattern is as shown in Figure 4.
Liquid crystal display device provided in an embodiment of the present invention, by the way that the visual angle control with the setting of liquid crystal display panel lamination is arranged
Panel processed, since the first electrode and second electrode of viewing-angle control panel are staggered and orthographic projection does not overlap, when giving
When first electrode and second electrode apply voltage, oblique electric field can be formed between the first electrode and the second electrode, then visual angle
The long axis of positive liquid crystal molecules in control panel along direction of an electric field deflect, light is modulated, due to liquid crystal display panel
The long axis deflection direction of interior liquid crystal molecule is different, causes the light of the liquid crystal molecule in two panels that phase occurs and prolongs
Late, lead to dark-state light leakage phenomena occur on the screen strabismus direction of the liquid crystal display device, so that the comparison on screen
Degree reduces, fuzzy when strabismus is observed, and viewing effect is influenced, to realize the narrow viewing angle display pattern of liquid crystal display device；When
When one electrode and second electrode are not applied to voltage, the liquid crystal molecule in viewing-angle control panel does not deflect, to light without
Modulation, dark-state does not generate light leakage, so that contrast will not decline, the contrast for the picture that human eye is observed when squinting will not
Decline, observation is clear, to realize the wide viewing angle display pattern of liquid crystal display device.In addition, liquid crystal display provided by the invention
Device can not only realize the arbitrary switch between wide viewing angle and narrow viewing angle, and the structure design of double-layer structure is simple, technique
Production is simple, and viewing-angle control panel and liquid crystal display panel separate, in narrow viewing angle, liquid crystal display device under positive apparent direction
Transmitance it is unaffected, display effect is preferable.
It should be noted that liquid crystal display device provided in an embodiment of the present invention, which is suitable for in-plane, changes (In-Plane
Switching, IPS) type, fringe field switching (Fringe Field Switching, FFS) type etc. is in the electricity for applying display
Liquid crystal display device of the liquid crystal molecule in the plane internal rotation with substrate-parallel when field.In embodiments of the present invention, the liquid crystal
Showing device is illustrated by taking fringe field switch type as an example.
The opposite electric field formed in the embodiment of the present invention is vertical electric field, and control liquid crystal molecule is stood, therefore can needle
Light leakage is carried out to some direction, and remaining direction is normally shown.
Further, in the specific implementation, due to the positive liquid crystal molecules in viewing-angle control panel along first electrode and
The direction of an electric field deflection formed between second electrode, and the deflection direction of the liquid crystal molecule in liquid crystal display panel and viewing angle control
Liquid crystal molecule deflection direction in panel is different, therefore the two generates optical delay, and dark-state light leakage is caused to increase, and realizes liquid crystal
The narrow viewing angle display pattern of showing device, therefore, in order to enable the direction of an electric field formed between first electrode and second electrode to make
Liquid crystal molecule occurs to deflect along direction of an electric field to realize dark-state light leakage, in above-mentioned liquid crystal display device provided in an embodiment of the present invention
In, as shown in figure 5, on first substrate 10 the adjacent first electrode 2 of orthographic projection and second electrode 3 central point line L and
Included angle A between one substrate 10 is 30 °~60 ° or included angle B is 120 °~150 °.
Further, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, when adjacent
It, can be with the first electricity when angle between the central point line and first substrate of the adjacent side of one electrode and second electrode is 45 °
The direction of an electric field formed between pole and second electrode can make liquid crystal molecule that the angle deflected along direction of an electric field occur, can be into one
Step increases dark-state light leakage, realizes the narrow viewing angle display pattern of liquid crystal display device.
Further, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, such as Fig. 1 and
Shown in Fig. 2, first electrode 2 and second electrode 3 are strip shaped electric poles, and arbitrary neighborhood first electrode 2 and second electrode 3 are first
The spacing between orthographic projection center on substrate 10 is equal.Staggered strip shaped electric poles provided by the invention in this way generate oblique
To direction of an electric field bilateral symmetry, the direction of the liquid crystal molecule deflection in viewing-angle control panel also symmetrical arranged opposite, so that narrow
Under the display pattern of visual angle, positive view directions display effect is more preferable, and the luminance loss of dialogue picture is smaller, as shown in fig. 6, Fig. 6
The liquid crystal molecule deflection in direction and liquid crystal display panel 100 is deflected for the liquid crystal molecule in corresponding viewing-angle control panel 200
The simulation schematic diagram in direction, it can be seen that the liquid crystal molecule deflection symmetrical arranged opposite in direction in viewing-angle control panel 200, and with
Liquid crystal molecule deflection direction in liquid crystal display panel 100 is different, therefore leads to the light of the liquid crystal molecule in two panels
Phase delay occurs for line, leads to dark-state light leakage phenomena occur on the screen strabismus direction of the liquid crystal display device, so that
Contrast on screen reduces, fuzzy when strabismus is observed, and influences viewing effect, to realize that the narrow viewing angle of liquid crystal display device is aobvious
Show mode.
Further, in the specific implementation, in order to drive the liquid crystal molecule in viewing-angle control panel to deflect,
In above-mentioned liquid crystal display device provided in an embodiment of the present invention, the voltage difference between first electrode and second electrode is greater than 4V.
Further, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, such as Fig. 7 and 8
Shown, liquid crystal display panel 100 includes the third substrate 30 and tetrabasal 40 being oppositely arranged, and is located at 30 He of third substrate
The second liquid crystal layer 4 between tetrabasal 40, the liquid crystal molecule of the second liquid crystal layer 4 are positive liquid crystal molecules or negative liquid crystal point
Son；Wherein, viewing-angle control panel 200 is located at the incident side or light emission side of liquid crystal display panel 100；Specifically, as shown in fig. 7,
Viewing-angle control panel 200 is located at the incident side of liquid crystal display panel 200；As depicted in figure 8, viewing-angle control panel 200 is located at liquid crystal
Show the light emission side of panel 100.
Further, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, as shown with 7,
When viewing-angle control panel 200 is located at the incident side of liquid crystal display panel 100, the second substrate 20 and third substrate 30 are same base
Plate；As depicted in figure 8, when viewing-angle control panel 200 is located at the light emission side of liquid crystal display panel 100, first substrate 100 and the 4th base
Plate 400 is same substrate.The setting that one piece of substrate can be saved in this way, reduces the thickness of liquid crystal display device.
Further, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, the first liquid crystal
The long axis extending direction of liquid crystal molecule in layer can mutually hang down with the long axis extending direction of the liquid crystal molecule in the second liquid crystal layer
Directly or it can be parallel to each other.The embodiment of the present invention is the long axis extending direction and the second liquid with the liquid crystal molecule in the first liquid crystal layer
What the long axis extending direction of the liquid crystal molecule in crystal layer was illustrated for being mutually perpendicular to, specifically, as shown in 1, Fig. 7 and Fig. 8,
The long axis of liquid crystal molecule in first liquid crystal layer 1 extends perpendicularly to paper direction, the liquid crystal molecule in the second liquid crystal layer 4
Long axis extending direction is parallel to paper direction.The long axis extending direction and the second liquid crystal of liquid crystal molecule in certain first liquid crystal layer
The long axis extending direction of liquid crystal molecule in layer can also be parallel to each other, for example, the long axis of the liquid crystal molecule in the first liquid crystal layer
The long axis extending direction of extending direction and the liquid crystal molecule in the second liquid crystal layer can be put down perpendicular to paper direction or
Row is in paper direction.
Further, in the specific implementation, first can be made in order to form electric field between the first electrode and the second electrode
Liquid crystal molecule in liquid crystal layer smoothly deflects along direction of an electric field, fills in above-mentioned liquid crystal display provided in an embodiment of the present invention
In setting, liquid crystal molecule in the first liquid crystal layer is 0 °~5 ° relative to first substrate and the initial pre-tilt angle of the second substrate, in this way
The tendency that liquid crystal molecule in first liquid crystal layer is deflected in original state with regard to oriented direction of an electric field is more advantageous to after forming electric field
Liquid crystal molecule in first liquid crystal layer deflects along direction of an electric field.
Further, in the specific implementation, in above-mentioned liquid crystal display device provided in an embodiment of the present invention, first electrode
Material with second electrode can be transparent conductive material, such as ITO.
Based on the same inventive concept, the embodiment of the invention also provides a kind of driving methods of liquid crystal display device, comprising:
When first electrode and second electrode are applied voltage to form electric field between the first electrode and the second electrode, the
The liquid crystal molecule of one liquid crystal layer is deflected along direction of an electric field, and liquid crystal display device is narrow viewing angle display pattern；
When first electrode and second electrode are not applied to voltage, the liquid crystal molecule of the first liquid crystal layer does not deflect, liquid
Crystal device is wide viewing angle display pattern.
The driving method of liquid crystal display device provided in an embodiment of the present invention, it is electric when applying to first electrode and second electrode
When pressure, oblique electric field can be formed between the first electrode and the second electrode, then the positive liquid crystal molecules in viewing-angle control panel
Long axis along direction of an electric field deflect, light is modulated, due to the long axis deflection side with the liquid crystal molecule in liquid crystal display panel
To difference, causes the light of the liquid crystal molecule in two panels that phase delay occurs, cause in the liquid crystal display device
There is dark-state light leakage phenomena on direction in screen strabismus, so that the contrast on screen reduces, it is fuzzy when strabismus is observed, it influences
Viewing effect, to realize the narrow viewing angle display pattern of liquid crystal display device；When first electrode and second electrode are not applied to electricity
When pressure, the liquid crystal molecule in viewing-angle control panel does not deflect, and to light without modulation, dark-state does not generate light leakage, to make
Obtaining contrast will not decline, and the contrast for the picture that human eye is observed when squinting will not decline, and observation is clear, to realize liquid crystal
The wide viewing angle display pattern of display device.Therefore the driving method of liquid crystal display device provided by the invention can be realized wide viewing angle
Arbitrary switch between narrow viewing angle.
In the specific implementation, the displaying principle of the driving method of above-mentioned liquid crystal display device may refer to above-mentioned liquid crystal display
Displaying principle described in device, this will not be repeated here.
Above-mentioned liquid crystal display device provided in an embodiment of the present invention can be with are as follows: mobile phone, tablet computer, television set, display,
Any products or components having a display function such as laptop, Digital Frame, navigator.For the other of the display device
Essential component part is it will be apparent to an ordinarily skilled person in the art that having, and this will not be repeated here, is not also answered
As limitation of the present invention.The implementation of the display device may refer to the embodiment of above-mentioned display panel, repeat place no longer
It repeats.
Liquid crystal display device and its driving method provided in an embodiment of the present invention, the liquid crystal display device pass through setting and liquid
The viewing-angle control panel of LCD panel lamination setting, since the first electrode and second electrode of viewing-angle control panel are staggered
And orthographic projection does not overlap, therefore when applying voltage to first electrode and second electrode, it can be in first electrode and the second electricity
Oblique electric field is formed between pole, then the long axis of the positive liquid crystal molecules in viewing-angle control panel along direction of an electric field deflect, to light into
Row modulation is caused in two panels due to different from the long axis of the liquid crystal molecule in liquid crystal display panel deflection direction
Phase delay occurs for the light of liquid crystal molecule, causes dark-state light leakage occur on the screen strabismus direction of the liquid crystal display device existing
As, so that the contrast on screen reduces, and it is fuzzy when strabismus is observed, viewing effect is influenced, to realize that liquid crystal display fills
The narrow viewing angle display pattern set；Liquid crystal point when first electrode and second electrode are not applied to voltage, in viewing-angle control panel
Son does not deflect, and to light without modulation, dark-state does not generate light leakage, so that contrast will not decline, when human eye is squinted
The contrast for the picture observed will not decline, and observation is clear, to realize the wide viewing angle display pattern of liquid crystal display device.Separately
Outside, liquid crystal display device provided by the invention can not only realize the arbitrary switch between wide viewing angle and narrow viewing angle, and double-deck
The structure design of structure is simple, technique production is simple, and viewing-angle control panel and liquid crystal display panel separate, in narrow viewing angle
When, the transmitance of liquid crystal display device is unaffected under positive apparent direction, and display effect is preferable.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (11)
1. a kind of liquid crystal display device, which is characterized in that liquid crystal display panel and viewing-angle control panel including lamination setting, institute
Stating viewing-angle control panel includes the first substrate being oppositely arranged and the second substrate, and is located at the first substrate and described second
The first liquid crystal layer between substrate；Liquid crystal molecule in first liquid crystal layer is positive liquid crystal molecules；
The first substrate has multiple first electrodes being independently arranged, the second substrate towards the surface of the second substrate
Surface towards the first substrate has multiple second electrodes being independently arranged；Wherein, the first electrode and described second
The orthographic projection of electrode on the first substrate is staggered and does not overlap；
When the first electrode and the second electrode are applied voltage between the first electrode and the second electrode
When forming electric field, the liquid crystal molecule of first liquid crystal layer is deflected along the direction of an electric field, and the liquid crystal display device is narrow view
Angle display pattern；
When the first electrode and the second electrode are not applied to voltage, the liquid crystal molecule of first liquid crystal layer does not occur
Deflection, the liquid crystal display device are wide viewing angle display pattern.
2. liquid crystal display device as described in claim 1, which is characterized in that the adjacent institute of orthographic projection on the first substrate
Stating the angle between first electrode and the central point line and the first substrate of the second electrode is 30 °~60 ° or 120 °
~150 °.
3. liquid crystal display device as claimed in claim 2, which is characterized in that the adjacent first electrode and the second electrode
Adjacent side central point line and the first substrate between angle be 45 °.
4. liquid crystal display device as described in claim 1, which is characterized in that the first electrode and the second electrode are
Strip shaped electric poles, and between the orthographic projection center of first electrode described in arbitrary neighborhood and the second electrode on the first substrate
Spacing it is equal.
5. liquid crystal display device as described in claim 1, which is characterized in that between the first electrode and the second electrode
Voltage difference be greater than 4V.
6. liquid crystal display device as described in claim 1, which is characterized in that the liquid crystal display panel includes being oppositely arranged
Third substrate and tetrabasal, and the second liquid crystal layer between the third substrate and the tetrabasal；Wherein, institute
State incident side or light emission side that viewing-angle control panel is located at the liquid crystal display panel.
7. liquid crystal display device as claimed in claim 6, which is characterized in that when the viewing-angle control panel is located at the liquid crystal
When the incident side of display panel, the second substrate and the third substrate are same substrate；When the viewing-angle control panel position
When the light emission side of the liquid crystal display panel, the first substrate and the tetrabasal are same substrate.
8. liquid crystal display device as claimed in claim 6, which is characterized in that the length of the liquid crystal molecule in first liquid crystal layer
Axis extending direction and the long axis extending direction of the liquid crystal molecule in second liquid crystal layer are mutually perpendicular to or are parallel to each other.
9. liquid crystal display device as described in claim 1, which is characterized in that the liquid crystal molecule in first liquid crystal layer is opposite
In the first substrate and the initial pre-tilt angle of the second substrate be 0 °~5 °.
10. liquid crystal display device as described in claim 1, which is characterized in that the first electrode and the second electrode
Material is transparent conductive material.
11. a kind of driving method of liquid crystal display device characterized by comprising
When the first electrode and the second electrode are applied voltage between the first electrode and the second electrode
When forming electric field, the liquid crystal molecule of first liquid crystal layer is deflected along the direction of an electric field, and the liquid crystal display device is narrow view
Angle display pattern；
When the first electrode and the second electrode are not applied to voltage, the liquid crystal molecule of first liquid crystal layer does not occur
Deflection, the liquid crystal display device are wide viewing angle display pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910146933.4A CN110187527A (en) | 2019-02-27 | 2019-02-27 | Liquid crystal display device and driving method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146933.4A CN110187527A (en) | 2019-02-27 | 2019-02-27 | Liquid crystal display device and driving method thereof |
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| CN201910146933.4A Pending CN110187527A (en) | 2019-02-27 | 2019-02-27 | Liquid crystal display device and driving method thereof |
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Application publication date: 20190830 |