CN101498869B - Visual angle controllable liquid crystal display device and driving method - Google Patents
Visual angle controllable liquid crystal display device and driving method Download PDFInfo
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- CN101498869B CN101498869B CN2008100333432A CN200810033343A CN101498869B CN 101498869 B CN101498869 B CN 101498869B CN 2008100333432 A CN2008100333432 A CN 2008100333432A CN 200810033343 A CN200810033343 A CN 200810033343A CN 101498869 B CN101498869 B CN 101498869B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000007 visual effect Effects 0.000 title abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 59
- 238000000576 coating method Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 230000005684 electric field Effects 0.000 description 9
- 239000010408 film Substances 0.000 description 9
- 210000002858 crystal cell Anatomy 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 238000013519 translation Methods 0.000 description 4
- 230000014616 translation Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
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Abstract
The invention relates to a visual angle controllable liquid crystal display device and a driving method thereof. The liquid crystal display device includes a first substrate and a second substrate which are oppositely disposed, a signal line and a scanning line which are formed on the first substrate and are vertically aligned with each other, a plurality of pixel regions formed by crossing the signal line and the scanning line, and a liquid crystal layer which is sandwiched between the first substrate and the second substrate and is vertically aligned, a pixel electrode is formed on the first substrate, a first common electrode for forming a single domain alignment of the liquid crystal layer is disposed on the second substrate, and a second common electrode for forming a multi-domain alignment of the liquid crystal layer is disposed on the second substrate. The liquid crystal display device provided by the invention can save a rubbing process for the orientation layer, thereby reducing the manufacturing cost, simplifying the process flow and avoiding poor display of the liquid crystal display device caused by the rubbing process.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator and driving method thereof, particularly a kind of liquid crystal indicator and the driving method thereof that can realize visual angle width control.
Background technology
(liquid crystal display LCD) becomes one of flat-panel monitor with the fastest developing speed with advantages such as it are light, thin to liquid crystal indicator gradually.But compare with cathode-ray tube display, thin-film transistor LCD device (Thin Film Transistor, TFT-LCD) visual angle relative narrower, this has just brought very big limitation for it in the application to strict high-end field, visual angle, as fields such as Aero-Space, medical treatment.Along with the fast development of LCD field wide viewing angle technology, at present can be up to the standard visual angle and vertical angle of view, the visual angle of a lot of products is respectively 85 °/85 °, even bigger visual angle.
LCD wide viewing angle technology mainly comprises at present vertical orientated (Vertical Alignment, VA) technology and face internal conversion (In Plane Switching, IPS) technology.The VA technology realizes by the method that forms works (Protrusion, projection) on pixel electrode.The advantage of vertical alignment mode is that positive contrast is high, can reach 600: 1 usually and more than.In addition, on processing procedure, do not need friction treatment.The VA mode LCD works in normal black pattern, also can reduce the possibility that " bright spot " appears in liquid crystal panel greatly.
Vertical orientated (Multi-domain Vertical Alignment MVA) in the liquid crystal indicator, forms small embossment on the upper and lower substrate, and liquid crystal molecule is vertical orientated, and the direction of polarizer slice and checking bias slice is orthogonal, so be dark attitude when not powering up at multizone.When making alive, liquid crystal molecule is arranged towards horizontal direction along the tilt angle direction that projection produces, and offset from perpendicular is arranged, thereby realizes showing.But the existence of minute protrusions makes the manufacturing process complexity of LCD, has reduced the yield of product.
Develop rapidly along with individual mobile device, people are except proposing LCD the requirement of wide viewing angle, also need in different application scenarios, realize the controllability at visual angle, when showing, person-to-person communication is narrow visual angle, when playing digital program or many people watch simultaneously, can realizes wide visual angle that as mobile phone screen this technology will be brought great convenience for people's production and life.
Traditional visual angle controllable system also need add the liquid crystal cell at least one control visual angle on this liquid crystal cell, so the thickness of this viewing angle control liquid crystal system is bigger except a liquid crystal cell that works in TN pattern or other pattern.Other has a kind of by adopt two kinds of liquid crystal mode of operations simultaneously in liquid crystal cell, and as VA pattern and fringing field switching (FFS, Fringe field switching) pattern, ecb mode and FFS pattern etc. realize viewing angle control.
Figure 1 shows that the structural representation of visual angle-controllable LCD device in the prior art, wherein liquid crystal molecule rotates under the acting in conjunction of horizontal component of electric field and vertical electric field, and its basic structure and IPS or FFS mode LCD are similar.Liquid crystal indicator shown in Figure 1 comprises, first electrode 003 and second electrode 004 that on tft array substrate 005, are provided with, (color filter CF) goes up the third electrode 001 that is provided with to color filter film substrate 008, in order to reducing the organic membrane 002 of longitudinal electric field influence, and alignment films 006.Wherein, when first electrode 003 on the array base palte 005 and second electrode 004 powered up, liquid crystal molecule rotated along the plane parallel with upper and lower base plate and to form wide viewing angle under the horizontal component of electric field effect; When the third electrode on the CF substrate 008 001 be positioned at first electrode 003 of array base palte 005, when second electrode 004 powers up simultaneously, the modulation that horizontal component of electric field can be subjected to vertical electric field makes liquid crystal molecule also form certain rotation perpendicular to the upper and lower base plate direction, thereby forms narrow field-of-view mode.
It is in 200610169935.8 the patented claim that technique scheme is disclosed in number of patent application, but, in this technical scheme, need the oriented layer 006 of upper and lower base plate inboard be rubbed, usually forming the frictional direction that becomes 15 ° of angles with horizontal strip shaped electric poles, yet, in the friction orientation processing procedure, can produce such as edge Mura various problems such as (a kind of picture are bad), greatly reduce the product yield, thereby reduced production efficiency.
For addressing the above problem, the invention provides a kind of visual angle controllable liquid crystal display device, can effectively simplify the manufacturing process of liquid crystal indicator, realize the width viewing angle control, and high picture display quality can be provided.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal indicator, can realize the switching controls of wide field-of-view mode and narrow field-of-view mode.
The present invention also aims to provide a kind of driving method of liquid crystal indicator, can control the wide visual angle mode of operation and the narrow visual angle mode of operation of liquid crystal indicator.
For solving the problems of the technologies described above, liquid crystal indicator of the present invention comprises first substrate and second substrate that is oppositely arranged, be formed at signal wire that is vertically aligned with each other and sweep trace on described first substrate, the a plurality of pixel regions that intersect to form by described signal wire and described sweep trace, and be sandwiched between described first substrate and described second substrate, the liquid crystal layer of under powering state not, arranging perpendicular to the surface of the surface of described first substrate or described second substrate, wherein on described first substrate, form pixel electrode, on described second substrate, form first public electrode, arrange in order to the single domain that forms described liquid crystal layer, and on described second substrate, form second public electrode, arrange in order to the multidomain that forms described liquid crystal layer.
As preferred version of the present invention, described pixel electrode, described first public electrode and described second public electrode are ITO, IZO or IGO electrode.
As another preferred version of the present invention, carve seam by on described pixel electrode, described first public electrode and described second public electrode, being provided with, arrange or the multidomain of described liquid crystal layer is arranged with the single domain that forms described liquid crystal layer.
For solving the problems of the technologies described above, the driving method of liquid crystal indicator of the present invention may further comprise the steps: pixel electrode that is arranged at first substrate and first public electrode that is arranged at second substrate are applied voltage, to form first orientations of liquid crystal layer; Described pixel electrode that is arranged at described first substrate and second public electrode that is arranged at described second substrate are applied voltage, to form second orientations of liquid crystal layer; Wherein by selecting to apply a voltage to described first public electrode or described second public electrode switches narrow field-of-view mode and wide field-of-view mode.
As preferred version of the present invention, the single domain orientations that described first orientations is described liquid crystal layer, and described second orientations multidomain orientations that is described liquid crystal layer.
Liquid crystal indicator of the present invention and driving method thereof, can easily realize the switching of wide field-of-view mode and narrow field-of-view mode, and owing to need not rub for oriented layer, can simplify technological process, reduce cost, can also avoid owing to problems such as the picture display effect that brings of friction are bad.
Description of drawings
Figure 1 shows that the structural representation of visual angle-controllable LCD device in the prior art.
Figure 2 shows that the sectional view of the liquid crystal indicator of first embodiment of the invention.
Figure 3 shows that the dot structure synoptic diagram of narrow field-of-view mode of the liquid crystal indicator of first embodiment of the invention.
Figure 4 shows that the dot structure synoptic diagram of wide field-of-view mode of the liquid crystal indicator of first embodiment of the invention.
Figure 5 shows that the dot structure synoptic diagram of the liquid crystal indicator of first embodiment of the invention.
Fig. 6 is the director software simulation figure of liquid crystal indicator liquid crystal molecule under wide field-of-view mode of first embodiment of the invention.
Fig. 7 is the transmitance software simulation figure of liquid crystal indicator dot structure under wide field-of-view mode of first embodiment of the invention.
Fig. 8 be the liquid crystal indicator of first embodiment of the invention under wide field-of-view mode, outside liquid crystal cell, add compensate film and the visual angle simulation drawing that obtains.
Figure 9 shows that the variation synoptic diagram of the dot structure of the liquid crystal indicator in the first embodiment of the invention.
Figure 10 shows that the dot structure synoptic diagram of the liquid crystal indicator of second embodiment of the invention.
Embodiment
Visual angle-controllable LCD device of the present invention and driving method thereof are described with reference to the accompanying drawings.
First embodiment
Figure 2 shows that the structural representation of the liquid crystal indicator of first embodiment of the invention, as shown in Figure 2, the liquid crystal indicator of first embodiment of the invention comprises, first substrate 107 positioned opposite to each other and second substrate 100, be arranged at the pixel electrode 105 on first substrate 107, be arranged at first public electrode 103 and second public electrode 101 of second substrate 100, be arranged at the organic insulator 102 between first public electrode 103 and second public electrode 101, be sandwiched between first substrate 107 and second substrate 100, the liquid crystal molecule of when not powering up, arranging 104 perpendicular to upper and lower base plate, be arranged at the polaroid 106 and the polaroid 108 in first substrate 107 and second substrate, 100 outsides respectively, and oriented layer (not shown).The present invention is by selecting that first public electrode 103 or second public electrode 101 are applied the control that voltage is realized the width visual angle of liquid crystal indicator.
The dot structure of wide field-of-view mode and narrow field-of-view mode is described respectively below with reference to Fig. 3-Fig. 5.Figure 3 shows that the dot structure synoptic diagram of narrow field-of-view mode of the liquid crystal indicator of first embodiment of the invention.As shown in Figure 3, first public electrode 103 is shown in broken lines, the carefully black solid line of pixel electrode 105 usefulness illustrates, 110 for being arranged at the sweep trace on first substrate 106, the 111st, be arranged on first substrate 106, perpendicular to the signal wire of sweep trace 110,112 is the a-Si layer in thin film transistor (TFT) (TFT) structure, and 113 is the via hole that pixel electrode 105 is linked to each other with TFT source/drain metal 115, the 114th, and the bottom crown of memory capacitance.Along the direction of sweep trace 110, first public electrode 103 is with respect to pixel electrode 105 translations, makes to have gap 109 (a) and 109 (b) between the pixel electrode 105 and first public electrode 103 when upper substrate 100 is looked down.On the direction of sweep trace 110, form gap 109 (a) and 109 (b) by carving seam (slit) in the not homonymy formation of first public electrode 103 and pixel electrode 105 respectively, the width of its intermediate gap 109 (a) and 109 (b) is 4 μ m-12 μ m.
Figure 4 shows that the dot structure synoptic diagram of wide field-of-view mode of the liquid crystal indicator of first embodiment of the invention.As shown in Figure 4, wherein the slightly black solid line of second public electrode, 101 usefulness illustrates, and the carefully black solid line of pixel electrode 105 usefulness illustrates.Identical among miscellaneous part and Fig. 3 do not repeat them here.Carve seam by on second public electrode 101, forming, second public electrode 101 is formed two sub-public electrodes of continuous rectangle, and two sub-public electrodes translation in the opposite direction form as shown in Figure 4 dot structure, make when upper substrate 100 is looked down, all there is the gap in edge in pixel between the pixel electrode 105 and second public electrode 101, and the width in this gap is 4 μ m-12 μ m.
Figure 5 shows that the dot structure synoptic diagram of the liquid crystal indicator of first embodiment of the invention.As shown in Figure 5, first public electrode 103 is shown in broken lines, and the slightly black solid line of second public electrode, 101 usefulness illustrates, and the carefully black solid line of pixel electrode 105 usefulness illustrates, and wherein the electrode pattern of each electrode and relative position repeat no more with identical shown in Fig. 3 and Fig. 4.
Specify the principle of work of the liquid crystal indicator of first embodiment of the invention below with reference to Fig. 3-Fig. 5.Under the mode of operation at narrow visual angle, the pixel electrode 105 and first public electrode 103 are applied voltage, and with second public electrode 101 float (floating), in this case, stitch and form tilting electric field at two electrode edges the quarter at pixel electrode 105 and first public electrode, 103 edges, liquid crystal molecule 104 becomes the arrangement that is parallel to upper substrate 100 from homeotropic alignment under electric field action, thus form single farmland to, realize that narrow visual angle shows.This moment, the visual angle of liquid crystal indicator was ± 20 ° approximately.
Under the mode of operation at wide visual angle, power up simultaneously for the pixel electrode 105 and second public electrode 101, and with first public electrode 103 float (floating), thereby combine with pixel electrode 105 by the seam at quarter that on second public electrode 101, forms, make liquid crystal molecule 104 under powering state, become the arrangement that forms four farmlands, thereby realize wide field-of-view mode from homeotropic alignment.
Fig. 6 is the director software simulation figure of liquid crystal indicator liquid crystal molecule under wide field-of-view mode of first embodiment of the invention, as can be seen from the figure, the liquid crystal indicator of first embodiment is in the mode of operation of wide visual angle, and liquid crystal molecule has tangible four farmlands and distributes.
Fig. 7 is the transmitance software simulation figure of liquid crystal indicator dot structure under wide field-of-view mode of first embodiment of the invention.Fig. 8 be the liquid crystal indicator of first embodiment of the invention under wide field-of-view mode, outside liquid crystal cell, add compensate film and the visual angle simulation drawing that obtains, wherein compensate film is the C-plate compensate film that is used to compensate liquid crystal molecule.As can be seen from Figure 8, when liquid crystal indicator worked in wide field-of-view mode, this liquid crystal indicator can reach more than 80 ° at the visual angle of oblique 45 ° and 135 ° directions, can satisfy the requirement that broadcast digital picture and many people watch simultaneously.If use 1/4 biaxial compensation film will further increase the visual angle of this device in the position of polaroid up and down.
Stitch shape and can comprise rectangle, epaulet shape etc. the quarter that is used to work in second public electrode 101 under the wide field-of-view mode of liquid crystal indicator.
In the first embodiment of the invention, adopt normal black VA display mode, liquid crystal material can adopt negative liquid crystal.Polaroid 107 and polaroid 108 can be the combination in any of common line polaroid, quarter wave plate, 1/2 wave plate, uniaxial compensation film, biaxial compensation film and any visual angle compensation system.And present embodiment is not limited to the electrode pattern that first public electrode 103 forms single domain, and second public electrode 101 forms four farmland electrode patterns, also can form the electrode pattern of single domain by second public electrode 101, and first electrode 103 forms the electrode pattern on four farmlands.
As can be seen from Figure 7, because some farmland lines (the black part in the pixel display area territory) can appear in the influence of fringe field inevitably in the pixel, make farmland line part can reduce the transmitance of viewing area to a certain extent.The variation of the dot structure of liquid crystal indicator has as shown in Figure 9 been proposed at this situation.
Figure 9 shows that the variation of the dot structure of the liquid crystal indicator in the first embodiment of the invention, is the dot structure synoptic diagram of this liquid crystal indicator under wide field-of-view mode shown in the figure.Wherein the shape of first public electrode, second public electrode and position etc. are all with identical shown in Fig. 4 and Fig. 5, and are different with shape with the different positions of memory capacitance bottom crown that are of the dot structure of Fig. 4.Form as shown in Figure 9 memory capacitance bottom crown 114 ' shape and position, wherein make memory capacitance bottom crown 114 ' the be formed at position of the farmland line of pixel center section shown in Figure 7, thereby can be positioned over the position of pixel farmland line by metal electrode, and improve aperture ratio of pixels greatly the memory capacitance bottom crown.
Second embodiment
Figure 10 is the dot structure synoptic diagram of the visual angle-controllable LCD device of second embodiment of the invention, and wherein Figure 10 (a) and Figure 10 (b) are respectively the dot structure synoptic diagram of narrow field-of-view mode and wide field-of-view mode.Shown in Figure 10 (a), the slightly black solid line of first public electrode, 203 usefulness illustrates, the carefully black solid line of pixel electrode 205 usefulness illustrates, and translation is taking place and forming the gap with respect to pixel electrode 205 along first public electrode 203 on the direction of sweep trace 204, described translation forms by seam at quarter (slit) is set on first public electrode 203 and pixel electrode 205, and the width in this gap is 4 μ m-12 μ m.Shown in Figure 10 (b), the slightly black solid line of second public electrode, 201 usefulness illustrates, the carefully black solid line of pixel electrode 205 usefulness illustrates, and described second public electrode 201 is formed two sub-public electrodes of continuous rectangle by forming seam at quarter (slit), and look down from upper substrate, at the pixel edge place, between second public electrode 201 and pixel electrode 205, form the gap, the width in this gap is 4 μ m-12 μ m.
Specify the principle of work of the visual angle-controllable LCD device of second embodiment of the invention below.Shown in Figure 10 (a), under the mode of operation at narrow visual angle, apply voltage for first public electrode 203 and pixel electrode 205, and with second public electrode 201 float (floating), this moment is owing to exist the gap between first public electrode 203 and the pixel electrode 205 on the direction of gate line 204, therefore between upper substrate and infrabasal plate, form tilting electric field, make all liquid crystal molecules be parallel to the upper and lower base plate arrangement by arranging perpendicular to upper and lower base plate to rotate to being similar to, and the formation single domain, thereby obtain the mode of operation at narrow visual angle.Under the mode of operation at narrow visual angle, the visual angle of liquid crystal indicator is about ± and 20 °.
Shown in Figure 10 (b), under the mode of operation at wide visual angle, apply voltage for second public electrode 201 and pixel electrode 205, and with first public electrode 203 float (floating), because the pixel electrode 205 and second public electrode 201 form shape as shown in the figure at pixel edge by carving seam, therefore between upper substrate and infrabasal plate, can form the tilting electric field of symmetry, liquid crystal molecule can form the row that topples over to the center of sub-public electrode from the pixel edge position to, this moment, liquid crystal molecule formed multidomain, the situation that forms four farmlands with the liquid crystal indicator of first embodiment of the invention under wide field-of-view mode is compared, and the visual angle is able to further expansion.
The structure and the driving method of the visual angle-controllable LCD device of second embodiment of the invention more than have been described, it is to be noted, the figure of second public electrode 201 is not limited to above explanation, and it can form the various electrode patterns that can produce multidomains even unlimited multidomain with pixel electrode 205 jointly.And present embodiment also is not limited to first public electrode 203 and forms single domain, and second public electrode 201 forms the electrode pattern of multidomain, also can be formed the electrode pattern of multidomain by first public electrode, and second public electrode forms the electrode pattern of single domain.
The present invention uses homeotropic alignment (VA) technology and realizes visual angle controllable liquid crystal display device, by pixel electrode on the infrabasal plate, first public electrode on the upper substrate and the different electrode structure of second public electrode are set respectively, and the driving method that uses driving method that pixel electrode and the first public electrode work, second public electrode float and pixel electrode and the second public electrode work, first public electrode to float, realize that VA pattern downwards angle of visibility is from being too narrow to wide control.Among the present invention,, can realize that promptly the visual angle arrives narrow variation from narrow to wide or leniently by the driving method of the in running order public electrode of simple selection.Compare with traditional visual angle controllable LCD, the present invention does not need oriented layer is rubbed, therefore has simple in structure, the simple advantage of processing procedure, can avoid simultaneously because the bad display that rubs and cause, thereby improve the picture display quality of liquid crystal indicator, and reduce cost, enhance productivity, the enhanced process feasibility.
Those skilled in the art all should be appreciated that, under the situation that does not break away from the spirit or scope of the present invention, can carry out various modifications and variations to the present invention.Thereby, if when any modification and modification fall in the protection domain of appended claims and equivalent thereof, think that the present invention contains these modifications and modification.
Claims (10)
1. liquid crystal indicator comprises:
First substrate that is oppositely arranged and second substrate,
Be formed at signal wire that is vertically aligned with each other and sweep trace on described first substrate,
The a plurality of pixel regions that intersect to form by described signal wire and described sweep trace, and
The liquid crystal layer that is sandwiched between described first substrate and described second substrate, under powering state not, arranges perpendicular to the surface of the surface of described first substrate or described second substrate, wherein
On described first substrate, form pixel electrode,
On described second substrate, form first public electrode and second public electrode, and be arranged at the insulation course between first public electrode and second public electrode,
The pixel electrode and first public electrode are applied voltage, and second public electrode is floated, arrange in order to the single domain that forms described liquid crystal layer; The pixel electrode and second public electrode are applied voltage, and first public electrode is floated, arrange in order to the multidomain that forms described liquid crystal layer.
2. liquid crystal indicator according to claim 1, wherein said pixel electrode, described first public electrode and described second public electrode are ITO, IZO or IGO electrode.
3. liquid crystal indicator according to claim 1 is wherein carved seam by being provided with on described pixel electrode, described first public electrode and described second public electrode, arrange or the multidomain of described liquid crystal layer is arranged with the single domain that forms described liquid crystal layer.
4. liquid crystal indicator according to claim 1 wherein switches narrow field-of-view mode and wide field-of-view mode by the voltage that adjusting puts on described first public electrode and described second public electrode.
5. liquid crystal indicator according to claim 3, wherein said first public electrode are along the direction of described sweep trace, with respect to described pixel electrode skew.
6. liquid crystal indicator according to claim 3, wherein said second public electrode form two sub-public electrodes that are connected with each other, and each limit of the close described pixel edges of described two sub-public electrodes is offset with respect to described pixel electrode.
7. according to claim 5 or the described liquid crystal indicator of claim 6, the distance of wherein said skew is 4 μ m-12 μ m.
8. liquid crystal indicator according to claim 6 wherein is provided with the bottom crown of memory capacitance on described first substrate, and the position of the farmland line of arranging corresponding to described multidomain and the bottom crown that shape is provided with described memory capacitance.
9. liquid crystal indicator according to claim 1, the first viewing angle compensation device and the second viewing angle compensation device wherein are set respectively on described first substrate and described second substrate, and the combination in any of the described first viewing angle compensation device and the described second viewing angle compensation device compensate film that can make for line polaroid, quarter wave plate, 1/2 wave plate, uniaxial compensation film, biaxial compensation film and by coating process.
10. the driving method of a liquid crystal indicator may further comprise the steps,
Apply voltage for pixel electrode that is arranged at first substrate and first public electrode that is arranged at second substrate, and second public electrode is floated, arrange with the single domain that forms liquid crystal layer;
Apply voltage for described pixel electrode that is arranged at described first substrate and second public electrode that is arranged at described second substrate, and first public electrode is floated, arrange with the multidomain that forms liquid crystal layer;
Wherein by selecting to apply a voltage to described first public electrode and described second public electrode switches narrow field-of-view mode and wide field-of-view mode.
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| CN102116972B (en) * | 2009-12-30 | 2012-05-09 | 上海天马微电子有限公司 | Liquid crystal display device and method for driving liquid crystal display device |
| TWI447490B (en) * | 2011-05-05 | 2014-08-01 | Au Optronics Corp | Liquid crystal display panel |
| WO2013047708A1 (en) * | 2011-09-30 | 2013-04-04 | ウィンテックポリマー株式会社 | Polybutylene terephthalate resin composition and welded body |
| TWI564639B (en) * | 2014-11-19 | 2017-01-01 | 友達光電股份有限公司 | Pixel structure |
| CN105807860A (en) * | 2016-03-21 | 2016-07-27 | 联想(北京)有限公司 | Safety leather sheath and safety protection method for electronic equipment |
| CN105739196A (en) | 2016-04-28 | 2016-07-06 | 深圳市华星光电技术有限公司 | Liquid crystal panel and liquid crystal display |
| CN105892113A (en) | 2016-06-25 | 2016-08-24 | 武汉华星光电技术有限公司 | Liquid crystal panel, liquid crystal display, and method for improving rotation barrier of liquid crystals |
| CN105954896A (en) * | 2016-06-25 | 2016-09-21 | 武汉华星光电技术有限公司 | Liquid crystal display panel with switchable viewing angles and liquid crystal display |
| CN110376773B (en) * | 2019-07-22 | 2022-02-11 | 昆山龙腾光电股份有限公司 | Driving method of visual angle switchable liquid crystal display device |
| CN111812870B (en) * | 2020-07-06 | 2023-02-28 | 昆山龙腾光电股份有限公司 | Display panel and display device |
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| CN1688920A (en) * | 2002-08-26 | 2005-10-26 | 中佛罗里达州大学研究基金会股份有限公司 | High speed and wide viewing angle liquid crystal displays |
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