CN101498871A - Viewing angle controllable liquid crystal display device and driving method thereof - Google Patents
Viewing angle controllable liquid crystal display device and driving method thereof Download PDFInfo
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Abstract
本发明涉及一种视角可控的液晶显示装置及其驱动方法。该液晶显示装置包括相对设置的上基板和下基板，形成于下基板上的彼此垂直排列的信号线和扫描线，由信号线和扫描线交叉形成的多个像素区域，以及夹于上基板和下基板之间、在未加电状态下垂直于上基板的表面或下基板的表面排列的液晶层，其中在下基板上形成像素电极，在上基板上形成第一公共电极，用以形成第一方向的视角模式，以及在上基板上形成第二公共电极，用以形成第二方向的视角模式，其中，第一公共电极相对于像素电极偏移，并且第二公共电极相对于像素电极偏移。该液晶显示装置可以降低制造成本，简化工艺，并且提高像素开口率。
The invention relates to a liquid crystal display device with controllable viewing angle and a driving method thereof. The liquid crystal display device includes an upper substrate and a lower substrate oppositely arranged, signal lines and scanning lines arranged perpendicularly to each other formed on the lower substrate, a plurality of pixel regions formed by intersections of the signal lines and scanning lines, and sandwiched between the upper substrate and the scanning lines. A liquid crystal layer arranged between the lower substrates and perpendicular to the surface of the upper substrate or the surface of the lower substrate in an unpowered state, wherein a pixel electrode is formed on the lower substrate, and a first common electrode is formed on the upper substrate to form a first A viewing angle mode in a direction, and a second common electrode is formed on the upper substrate to form a viewing angle mode in a second direction, wherein the first common electrode is offset relative to the pixel electrode, and the second common electrode is offset relative to the pixel electrode . The liquid crystal display device can reduce the manufacturing cost, simplify the process, and increase the pixel aperture ratio.
Description
Technical field
The present invention relates to a kind of visual angle-controllable LCD device and driving method thereof, particularly a kind of can control carried out liquid crystal indicator and the driving method thereof that LOOK LEFT shows, LOOK RIGHT shows and wide viewing angle shows respectively.
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, (this has just brought very big limitation for it in the application to strict high-end field, visual angle to thin-film transistor LCD device for Thin Film Transistor, visual angle relative narrower TFT-LCD).
Along with the progress at full speed of lcd technology, liquid crystal indicator is just progressively to wide viewing angle, high-contrast, and high readable direction develops.Yet because the liquid crystal display mode of relying on automatically controlled change light path, the orientation by the regulator solution crystal layer is to change optical path difference, thereby the modulation lines polarized light shows, therefore observe from different directions or angle, optical path difference certainly exists difference, and then the effect of Xian Shiing is also different.In this sense, viewing angle characteristic is not good is an essential problem of liquid crystal display.Because liquid crystal display product is just occupying increasing ratio in the consumer electronics produce market, the requirement on liquid crystal display wide viewing angle and the visual angle symmetry is also promoted day by day.
The technology of using in wide viewing angle liquid crystal technology field at present is mainly in-plane-switching-mode (IPS) liquid crystal indicator, and fringing field switches (FFS) mode LCD and homeotropic alignment (VA) mode LCD etc.In IPS (the In Plane Switch) mode LCD, pixel electrode and public (common) electrode all are formed on lower glass substrate side (TFT glass substrate side), liquid crystal molecule is in the plane that is parallel to the lower glass substrate side, by the rotation of lateral electric fields control liquid crystal molecule, thereby the optical path difference of regulating linearly polarized light realizes showing.Under the IPS display mode, little from the optical path difference variation of diverse location and angle observation liquid crystal cell, can realize that therefore wide viewing angle shows.But the shortcoming of IPS display mode is because public electrode and pixel electrode arrange that with layer the possibility of short circuit is big, so the yield of product is lower, and realizes showing have the part liquid crystal molecule not to be subjected to the automatically controlled aperture opening ratio that makes low owing to rely on lateral electric fields.FFS (Fringe Field Switch) pattern is an improved display mode on the basis of IPS pattern, relies on lateral electric fields equally and shows, therefore when realizing wide viewing angle, still has the problems referred to above.。
VA (Vertical alignment) pattern is another kind of wide viewing angle display mode commonly used.The VA display mode is different with the IPS display mode, the VA pattern is that the thrust by lateral electric fields or some regular arrangements makes liquid crystal molecule rotate to the direction of appointment, and the molecule that is positioned at zones of different has different separately orientations, make each self-forming domain structure of molecule that orientation is different, and because different domain structures is different with angle observation optical path difference from different directions, what then make whole pixel performance is the whole structure of different optical path differences, thereby has realized the effect of wide viewing angle.The VA pattern adopts negative liquid crystal mostly, and in order to realize multidomain structure, alignment films is without friction.Because negative liquid crystal need rely on the direction of definite orientations such as raised structures of lateral electric fields or substrate surface, according to the mode difference of carrying out liquid crystal aligning, the VA pattern can be divided into MVA (Multi-domain Vertical Alignment) pattern and PVA (PatternedVertical Alignment) pattern two big classes again.The thrust on MVA pattern utilization surface forms tilt angle and forms multidomain structure.The utilization of PVA pattern is carried out the seam at quarter of specific pattern to pixel electrode and public electrode, relies on lateral electric fields and forms multidomain structure.But, small size VA pattern is at black attitude compensation of dispersion and promote the optics utilization factor of pixel, negative C-plate and the 1/4 λ wave plates of adopting compensate more, yet the price comparison height of compensate film makes the cost of liquid crystal indicator of this class wide viewing angle to reduce.
Summary of the invention
The object of the present invention is to provide a kind of visual angle-controllable LCD device, can realize the switching between different visual angles and the wide viewing angle.
The present invention also aims to provide a kind of driving method of visual angle-controllable LCD device, can be easy to realize switching between different visual angles and the wide viewing angle by this driving method.
In order to address the above problem, liquid crystal indicator of the present invention comprises upper substrate and the infrabasal plate that is oppositely arranged, be formed at signal wire that is vertically aligned with each other and sweep trace on the described infrabasal plate, the a plurality of pixel regions that intersect to form by described signal wire and described sweep trace, and be sandwiched between described upper substrate and the described infrabasal plate, the liquid crystal layer of under powering state not, arranging perpendicular to the surface of the surface of described upper substrate or described infrabasal plate, wherein on described infrabasal plate, form pixel electrode, on described upper substrate, form first public electrode, in order to form the field-of-view mode of first direction, and on described upper substrate, form second public electrode, in order to form the field-of-view mode of second direction, wherein, described first public electrode is offset with respect to described pixel electrode, and described second public electrode is offset with respect to described pixel electrode.
As preferred version of the present invention, described first direction and described second direction are opposite direction.
As another preferred version of the present invention, put on described first public electrode and the voltage that puts on described second public electrode by adjusting, switch LOOK LEFT pattern and LOOK RIGHT pattern.
In order to address the above problem, the invention provides a kind of driving method of liquid crystal indicator, wherein said liquid crystal indicator comprises upper substrate and the infrabasal plate that is oppositely arranged, be formed at signal wire that is vertically aligned with each other and sweep trace on the described infrabasal plate, the a plurality of pixel regions that intersect to form by described signal wire and described sweep trace, and be sandwiched between described upper substrate and the described infrabasal plate, the liquid crystal layer of under powering state not, arranging perpendicular to the surface of the surface of described upper substrate or described infrabasal plate, on described infrabasal plate, form pixel electrode, on described upper substrate, form first public electrode, in order to form the field-of-view mode of first direction, and on described upper substrate, form second public electrode, in order to form the field-of-view mode of second direction, and, described first public electrode is offset with respect to described pixel electrode, described second public electrode is offset with respect to described pixel electrode, described first direction and described second direction are opposite direction, wherein, apply voltage for described first public electrode and described pixel electrode, form the field-of-view mode of first direction, apply voltage for described second public electrode and described pixel electrode, form the field-of-view mode of second direction, and alternately apply voltage for described first public electrode and described second public electrode, form the wide viewing angle pattern.
As preferred version of the present invention when forming the wide viewing angle pattern, preceding field at a two field picture, apply voltage for described first public electrode and described pixel electrode,, apply voltage for described second public electrode and described pixel electrode at the back field of a two field picture.
Liquid crystal indicator of the present invention can improve pixel aperture ratio, simultaneously owing to do not need to adopt expensive compensate film, can effectively reduce the cost of liquid crystal indicator, simplify manufacturing process, and can reduce owing to multi-layer optical film absorbs the emergent light loss that incident light causes, further promote the transmitance of liquid crystal indicator.
Description of drawings
Figure 1 shows that dot structure synoptic diagram according to the VA visual angle-controllable LCD device of first embodiment of the invention.
Figure 2 shows that dot structure diagrammatic cross-section according to the VA visual angle-controllable LCD device of first embodiment of the invention.
Figure 3 shows that LOOK LEFT demonstration and LOOK RIGHT contrast of display degree simulation synoptic diagram according to the VA visual angle-controllable LCD device of first embodiment of the invention.
Figure 4 shows that the GTG synoptic diagram that the wide viewing angle according to the VA visual angle-controllable LCD device of first embodiment of the invention shows.
Figure 5 shows that structure schematic perspective view according to the VA visual angle-controllable LCD device of first embodiment of the invention.
Be respectively the dot structure synoptic diagram according to VA visual angle-controllable LCD device under first pattern of second embodiment of the invention, the director software simulation figure and the contrast simulation synoptic diagram of liquid crystal molecule shown in Fig. 6 (a)～Fig. 6 (c).
Fig. 7 (a)～Fig. 7 (b) is depicted as according to the director software simulation figure of the dot structure synoptic diagram of VA visual angle-controllable LCD device under second pattern of second embodiment of the invention, liquid crystal molecule and contrast simulation synoptic diagram.
Figure 8 shows that transmitance software simulation synoptic diagram according to the VA visual angle-controllable LCD device of second embodiment of the invention.
Embodiment
The specific embodiment of the present invention is described with reference to the accompanying drawings.
First embodiment
Figure 1 shows that the dot structure synoptic diagram of the VA visual angle-controllable LCD device of first embodiment of the invention.Fig. 2 is its diagrammatic cross-section.As depicted in figs. 1 and 2, liquid crystal indicator of the present invention comprises, data line 101 is for the pixel electrode 106 of infrabasal plate side provides data-signal; Concentric line 102 is as the memory capacitance bottom electrode; Thin film transistor switch element (TFT) 103 is formed at the infrabasal plate side, as the switch of whole pixel; Gate line 104 links to each other with the grid of TFT103, and for TFT provide switching signal with control pixel charge and discharge process.Said structure and existing TFT panel construction are basic identical.
Liquid crystal indicator of the present invention also comprises, be formed at the left electrode 105 of upper substrate 201 sides, measure-alike with the pixel electrode 106 that is formed at the infrabasal plate side, and be offset left with respect to pixel electrode 106, in order to after powering up and between the pixel electrode, to form lateral electric fields, thereby make the liquid crystal molecule in the pixel region tilt to the right, rotate, thereby form LOOK LEFT; Be formed at the pixel electrode 106 of infrabasal plate 206 sides; And, be formed at the right electrode 107 of upper substrate 201 sides, measure-alike with pixel electrode 106, and be offset to the right with respect to pixel electrode 106, the effect of right electrode 107 is to form lateral electric fields after powering up and between the pixel electrode to make the liquid crystal molecule in the pixel tilt to the left, rotate, thereby forms LOOK RIGHT; And be formed at insulation course 203 between left electrode 105 and the right electrode 106.
In the liquid crystal indicator of the present invention, arrange two-layer left electrode 105 and right electrode 106 in upper substrate 201 sides, and between left electrode 105 and the right electrode 106 with insulation course at interval, and two-layer electrode is imposed etching technics, there is the certain location relation in the two-layer electrode that makes each pixel form in upper substrate 201 sides, thereby can form the lateral electric fields of different directions after powering up.
The following describes the principle of work of liquid crystal indicator of the present invention.When carrying out the LOOK LEFT display mode, apply voltage for left electrode 105 and pixel electrode 106, and make right electrode 107 float, form lateral electric fields, make liquid crystal molecule tilt to the right, and show with the LOOK LEFT pattern; When carrying out the LOOK RIGHT display mode, apply voltage for right electrode 107 and pixel electrode 106, and make left electrode 105 float, form lateral electric fields, make liquid crystal molecule tilt to the left, and show with the LOOK RIGHT pattern.When carrying out the wide viewing angle display mode, apply voltage at preceding field for left electrode 105 and pixel electrode 106, field applies voltage for right electrode 107 and pixel electrode 106 in the back, so alternately apply voltage, alternately form the lateral electric fields of different directions, make liquid crystal molecule alternately form different orientations, show thereby form the wide viewing angle pattern.It may be noted that the time, this frequency of sentencing 120Hz alternately applies voltage for left electrode 105 and right electrode 107.
Need to prove above only for illustrating, do not constitute for restriction of the present invention, and the left electrode 105 and the right electrode 107 that are formed at upper substrate 201 can also form other shapes or size, as long as can form the lateral electric fields of different directions with the pixel electrode of infrabasal plate after powering up.
Because when powering up for the left electrode 105 of upper substrate side setting or right electrode 107, liquid crystal molecule rotates to the right or to the left, the attaching mode of then upper and lower line polaroid is that polarizing axis becomes 45 degree or 135 to spend respectively with gate line.
The LOOK LEFT that Fig. 3 (a)～Fig. 3 (b) is depicted as according to the VA visual angle-controllable LCD device of first embodiment of the invention shows and LOOK RIGHT contrast of display degree simulation synoptic diagram.As shown in the figure, when applying voltage for pixel electrode 106 and left electrode 105, and right electrode 107 is when floating, liquid crystal indicator such as Fig. 3 (a) are depicted as LOOK LEFT, and when applying voltage for pixel electrode 106 and right electrode 107, and left electrode 105 is when floating, and liquid crystal indicator such as Fig. 3 (b) are depicted as LOOK RIGHT.Thereby realize LOOK LEFT pattern and LOOK RIGHT pattern by selection for the upper substrate lateral electrode.Contrast scale 309 in the comparison diagram 3 (c), describe for Fig. 3 (a) and Fig. 3 (b), the contrast simulation synoptic diagram of LOOK LEFT pattern is shown in Fig. 3 (a), wherein zone shown in 302 is a contrast less than 10 zone, zone shown in 303 for contrast equal 10 etc. the zone that surrounded of contrast line, zone shown in 304 is a contrast greater than 10 zone.The contrast simulation synoptic diagram of LOOK RIGHT pattern is shown in Fig. 3 (b), wherein zone shown in 306 is a contrast less than 10 zone, zone shown in 307 for contrast equal 10 etc. the zone that surrounded of contrast line, zone shown in 308 is a contrast greater than 10 zone.
Because having adopted the branch sequential to drive the mode that liquid crystal molecule is turned left or turn right realizes showing, therefore the liquid crystal indicator of first embodiment of the invention is when liquid crystal molecule all turns to the left side or all turns to the right side, the visual angle can be realized LOOK LEFT pattern and LOOK RIGHT pattern respectively shown in Fig. 3 (a) and Fig. 3 (b).When alternately applying voltage for the left electrode 105 of upper substrate side and right electrode 107 with the frequency of 120Hz, the liquid crystal indicator of first embodiment of the invention promptly can be realized wide viewing angle.
Fig. 4 is the pixel gray level synoptic diagram after liquid crystal molecule turns left or turns right.In frequency is in each frame of 60Hz, because liquid crystal molecule is in the preceding field of 120Hz and the back field that frequency is 120Hz in frequency, under the driving of lateral electric fields, turn left or turn right respectively, and in each field, arrange along a direction owing to liquid crystal molecule, therefore on whole pixel, there is not the farmland line to distribute, can all show same grey scale pattern, as shown in Figure 4.And because preceding field and the frequency Alternation Display of back field with 120Hz, therefore at human eye visually, what liquid crystal indicator of the present invention obtained is the display effect of wide viewing angle.
As mentioned above, the display mode of liquid crystal indicator of the present invention is not producing under the prerequisite that the farmland line distributes, and by cutting apart left and right visual angle image on sequential, thereby has produced wide-visual angle effect, and has guaranteed aperture ratio of pixels.
Figure 5 shows that structure schematic perspective view according to the VA visual angle-controllable LCD device of first embodiment of the invention.The zone is the transparent region of display panels periphery shown in 501, in 501 zones, forms transparent ITO layer on lower glass substrate, and does not have color filter and black matrix layer in the top glass substrate side, forms conductive material in this zone.Zone shown in 502 corresponding to this zone, earlier forms black matrix layer in the top glass substrate side for being formed at the outer lead zone of lower glass substrate side, in order to block outer lead, forms transparent ITO layer then.The zone is the viewing area of this liquid crystal indicator shown in 503, and in 503 zones, the top glass substrate side at first forms the black matrix layer between pixel, and corresponding color filter is set then, forms transparent ITO layer at last.504 are depicted as conductive material (transfer), in order to common signal is offered wherein one of left electrode 105 on the top glass substrate or right electrode 107.505 are depicted as other conductive material, in order to common signal is offered other one of left electrode 105 on the top glass substrate or right electrode 107.By conductive material 504 and conductive material 505, electrode 105 and right electrode 107 are alternately imported common signal left respectively, realize dividing sequential work, and realize wide viewing angle.
Because liquid crystal indicator according to first embodiment of the invention, alternately apply voltage for left electrode and right electrode with high frequency and can realize wide viewing angle, therefore only need in the liquid crystal indicator of the present invention to use a pair of orthogonal linear polarizer, and do not need to adopt any compensate film that the visual angle is compensated.And since the price of linear polarizer well below the price of compensate films such as bit phase delay film and dish shape (discotic) compensate film, therefore liquid crystal indicator of the present invention can reduce the production cost of liquid crystal indicator, realizes wide viewing angle simultaneously.Meanwhile,, can increase the transmitance backlight of liquid crystal indicator, increase brightness simultaneously owing to do not need blooming such as compensate film.
Second embodiment
Fig. 6 (a)～Fig. 6 (c) and Fig. 7 (a)～Fig. 7 (c) is depicted as the liquid crystal indicator of the second embodiment of the present invention, the dot structure synoptic diagram of different field-of-view modes, liquid crystal molecule director simulation synoptic diagram and contrast simulation synoptic diagram.Below with reference to Fig. 6 (a)-Fig. 6 (c) and Fig. 7 (a)-Fig. 7 (c), describe for the liquid crystal indicator of second embodiment of the invention.
Fig. 6 (a) is depicted as the dot structure synoptic diagram of realizing first field-of-view mode in the second embodiment of the invention.Shown in Fig. 6 (a), liquid crystal indicator comprises first public electrode 601, is formed at the upper substrate side, and pixel electrode 602 is formed at the infrabasal plate side.Fig. 7 (a) is depicted as the dot structure synoptic diagram of realizing second field-of-view mode in the second embodiment of the invention.Shown in Fig. 7 (a), liquid crystal indicator also comprises second public electrode 702, is arranged at the upper substrate side.And be arranged between first public electrode 601 of upper substrate side and second public electrode 702 insulation course is set.Second embodiment is the different of electrode shape with the difference of first embodiment, just by forming difform electrode shape by etching, thereby make liquid crystal molecule under first field-of-view mode and second field-of-view mode, form multidomain structure at upper substrate and infrabasal plate.Identical among the driving method of the liquid crystal indicator among second embodiment and first embodiment do not repeat them here.
The shape of first public electrode 601 and second public electrode 702 and position form two continuous rectangles respectively shown in Fig. 6 (a) and Fig. 7 (a), and are offset left with respect to pixel electrode 602 respectively and skew to the right.Under first field-of-view mode, apply voltage for first public electrode 601 and pixel electrode 602, and when second public electrode 702 is floated, because first public electrode 601 moves setting with respect to pixel electrode 602 left avertences, therefore can form lateral electric fields, and make liquid crystal molecule turn right, form the visual angle of taking back.And because the lateral electric fields that the electrode pattern in pixel centre position provides can make near the liquid crystal molecule in this position upwards rotate.Therefore under first field-of-view mode, liquid crystal molecule forms two domain structures, when Fig. 6 (b) is depicted as and applies voltage for first public electrode 601 and pixel electrode 602, and the director simulation synoptic diagram of liquid crystal molecule.At this moment, 603 zones are depicted as the domain structure that liquid crystal molecule is upwards arranged, and 604 zones are depicted as the domain structure that liquid crystal molecule is arranged to the right.Fig. 6 (c) be depicted as after the upper and lower base plate both sides of the liquid crystal indicator of second embodiment are provided with the pair of orthogonal linear polarizer etc. contrast figure, shown in figure, first field-of-view mode is down the field-of-view mode of taking back.
Under second field-of-view mode, apply voltage for second public electrode 702 and pixel electrode 602, and when first public electrode 601 is floated, because second public electrode moves setting with respect to pixel electrode 602 right avertence, therefore can form lateral electric fields, liquid crystal molecule is turned left, form the visual angle that takes over.And because the lateral electric fields that the electrode pattern in pixel centre position provides can make near the liquid crystal molecule in this position rotate.Therefore, under second field-of-view mode, liquid crystal molecule forms two domain structures.Be respectively when applying voltage the director simulation synoptic diagram of liquid crystal molecule shown in Fig. 7 (b) for pixel electrode 602 and second public electrode 702.As shown in the figure, form the domain structure of liquid crystal molecule arrangement downwards and the domain structure that liquid crystal molecule is arranged in the pixel region left.Fig. 7 (c) is depicted as the contrast synoptic diagram after the upper and lower base plate both sides of the second embodiment liquid crystal indicator are provided with the pair of orthogonal linear polarizer, shown in figure, is the field-of-view mode that takes under second field-of-view mode.
When field and back field alternation, what the liquid crystal indicator of second embodiment of the invention obtained was the demonstration of the effect of wide angle of 60Hz before above-mentioned first field-of-view mode and second field-of-view mode be divided into the frequency of 120Hz.Wherein in each field, liquid crystal molecule is two domain structures.
According to the described liquid crystal indicator of second embodiment of the invention, because first field-of-view mode and the second field-of-view mode alternation can realize wide viewing angle, therefore identical with first embodiment, the polaroid of quadrature only need be set on the upper substrate of liquid crystal indicator and the infrabasal plate, and need be at the upper substrate and the infrabasal plate arranged outside compensate film of liquid crystal indicator, thereby can avoid owing to the compensate film liquid crystal indicator cost that causes that costs an arm and a leg can't reduce, owing to do not need to be provided with compensate film, liquid crystal indicator of the present invention can also be simplified production technology simultaneously.
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 (15)
1. liquid crystal indicator comprises:
Upper substrate that is oppositely arranged and infrabasal plate,
Be formed at signal wire that is vertically aligned with each other and sweep trace on the described infrabasal plate,
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 upper substrate and the described infrabasal plate, under powering state not, arranges perpendicular to the surface of the surface of described upper substrate or described infrabasal plate, wherein
On described infrabasal plate, form pixel electrode,
On described upper substrate, form first public electrode, in order to the field-of-view mode of formation first direction, and
On described upper substrate, form second public electrode, in order to the field-of-view mode of formation second direction,
Wherein, described first public electrode is offset with respect to described pixel electrode, and described second public electrode is offset with respect to described pixel electrode.
2. liquid crystal indicator according to claim 1, wherein said first direction and described second direction are opposite direction.
3. liquid crystal indicator according to claim 1 forms insulation course between wherein said first public electrode and described second public electrode.
4. liquid crystal indicator according to claim 1 wherein forms the skew of described first public electrode and the skew of described second public electrode by etch process.
5. liquid crystal indicator according to claim 1, wherein said first public electrode is offset left with respect to described pixel electrode, and described second public electrode is offset to the right with respect to described pixel electrode.
6. liquid crystal indicator according to claim 5 wherein puts on described first public electrode and the voltage that puts on described second public electrode by adjusting, switches LOOK LEFT pattern and LOOK RIGHT pattern.
7. 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.
8. liquid crystal indicator according to claim 1 wherein forms the multidomain arrangement at described pixel region by carving seam.
9. the driving method of a liquid crystal indicator, described liquid crystal indicator comprises:
Upper substrate that is oppositely arranged and infrabasal plate,
Be formed at signal wire that is vertically aligned with each other and sweep trace on the described infrabasal plate,
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 upper substrate and the described infrabasal plate, under powering state not, arranges perpendicular to the surface of the surface of described upper substrate or described infrabasal plate,
On described infrabasal plate, form pixel electrode,
On described upper substrate, form first public electrode, in order to the field-of-view mode of formation first direction, and
On described upper substrate, form second public electrode, in order to the field-of-view mode of formation second direction, and
Described first public electrode is offset with respect to described pixel electrode, and described second public electrode is offset with respect to described pixel electrode,
Wherein, apply voltage, form the field-of-view mode of described first direction for described pixel electrode and described first public electrode,
Apply voltage for described pixel electrode and described second public electrode, form the field-of-view mode of described second direction.
10. the driving method of a liquid crystal indicator, described liquid crystal indicator comprises:
Upper substrate that is oppositely arranged and infrabasal plate,
Be formed at signal wire that is vertically aligned with each other and sweep trace on the described infrabasal plate,
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 upper substrate and the described infrabasal plate, under powering state not, arranges perpendicular to the surface of the surface of described upper substrate or described infrabasal plate,
On described infrabasal plate, form pixel electrode,
On described upper substrate, form first public electrode, in order to the field-of-view mode of formation first direction, and
On described upper substrate, form second public electrode, in order to the field-of-view mode of formation second direction, and,
Described first public electrode is offset with respect to described pixel electrode, and described second public electrode is offset with respect to described pixel electrode, and described first direction and described second direction are opposite direction,
Wherein, alternately apply voltage, form the wide viewing angle display mode for described first public electrode and described second public electrode.
11. the driving method of liquid crystal indicator according to claim 10, wherein at the preceding field of a two field picture, apply voltage for described pixel electrode and described first public electrode, and, apply voltage for described pixel electrode and described second public electrode at the back field of a described two field picture.
12. the driving method of liquid crystal indicator according to claim 10, wherein the frequency with 120Hz alternately applies voltage for described first public electrode and described second public electrode.
13. the driving method of a liquid crystal indicator, described liquid crystal indicator comprises:
Upper substrate that is oppositely arranged and infrabasal plate,
Be formed at signal wire that is vertically aligned with each other and sweep trace on the described infrabasal plate,
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 upper substrate and the described infrabasal plate, under powering state not, arranges perpendicular to the surface of the surface of described upper substrate or described infrabasal plate,
On described infrabasal plate, form pixel electrode,
On described upper substrate, form first public electrode, in order to the field-of-view mode of formation first direction, and
On described upper substrate, form second public electrode, in order to the field-of-view mode of formation second direction, and,
Described first public electrode is offset with respect to described pixel electrode, and described second public electrode is offset with respect to described pixel electrode, and described first direction and described second direction are opposite direction,
Wherein, apply voltage, form the field-of-view mode of first direction for described first public electrode and described pixel electrode,
Apply voltage for described second public electrode and described pixel electrode, form the field-of-view mode of second direction, and
Alternately apply voltage for described first public electrode and described second public electrode, form the wide viewing angle pattern.
14. the driving method of liquid crystal indicator according to claim 13, wherein when forming the wide viewing angle pattern, preceding field at a two field picture, apply voltage for described first public electrode and described pixel electrode, at the back field of a two field picture, apply voltage for described second public electrode and described pixel electrode.
15. liquid crystal indicator according to claim 13, the field-of-view mode of wherein said first direction are the LOOK LEFT pattern, and the field-of-view mode of described second direction is the LOOK RIGHT pattern.
Priority Applications (1)
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| CN2008100333451A CN101498871B (en) | 2008-01-31 | 2008-01-31 | Visual angle controllable liquid crystal display device and driving method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645796A (en) * | 2011-02-22 | 2012-08-22 | 上海天马微电子有限公司 | A liquid crystal display device |
| CN105676511A (en) * | 2016-04-01 | 2016-06-15 | 京东方科技集团股份有限公司 | Display panel and driving method thereof as well as display device |
| CN106353936A (en) * | 2016-11-14 | 2017-01-25 | 昆山龙腾光电有限公司 | Liquid-crystal display device having controllable wide and narrow viewing angles and viewing angle control method |
| CN107390403A (en) * | 2017-09-07 | 2017-11-24 | 昆山龙腾光电有限公司 | Liquid crystal display device and driving method |
| CN109407420A (en) * | 2018-10-24 | 2019-03-01 | 上海无线电设备研究所 | A kind of Terahertz blue phase liquid crystal grating and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363826C (en) * | 2002-08-26 | 2008-01-23 | 中佛罗里达州大学研究基金会股份有限公司 | High Speed, Wide Viewing Angle LCD Display |
| JP2007178907A (en) * | 2005-12-28 | 2007-07-12 | Lg Philips Lcd Co Ltd | Liquid crystal display device |
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2008
- 2008-01-31 CN CN2008100333451A patent/CN101498871B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645796A (en) * | 2011-02-22 | 2012-08-22 | 上海天马微电子有限公司 | A liquid crystal display device |
| CN102645796B (en) * | 2011-02-22 | 2015-04-29 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN105676511A (en) * | 2016-04-01 | 2016-06-15 | 京东方科技集团股份有限公司 | Display panel and driving method thereof as well as display device |
| US10228606B2 (en) | 2016-04-01 | 2019-03-12 | Boe Technology Group Co., Ltd. | Display panel comprising liquid crystal molecules that are driven to create a right-angle liquid crystal prism and display apparatus and driving method thereof |
| CN106353936A (en) * | 2016-11-14 | 2017-01-25 | 昆山龙腾光电有限公司 | Liquid-crystal display device having controllable wide and narrow viewing angles and viewing angle control method |
| CN106353936B (en) * | 2016-11-14 | 2019-06-11 | 昆山龙腾光电有限公司 | Width visual angle controllable liquid crystal display device and method of controlling viewing angle |
| CN107390403A (en) * | 2017-09-07 | 2017-11-24 | 昆山龙腾光电有限公司 | Liquid crystal display device and driving method |
| CN109407420A (en) * | 2018-10-24 | 2019-03-01 | 上海无线电设备研究所 | A kind of Terahertz blue phase liquid crystal grating and preparation method thereof |
| CN109407420B (en) * | 2018-10-24 | 2021-08-31 | 上海无线电设备研究所 | Terahertz blue-phase liquid crystal grating and manufacturing method thereof |
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| CN101498871B (en) | 2011-12-21 |
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