CN102012587A - Homeotropic alignment fast response FIS-VA-3T liquid crystal display - Google Patents
Homeotropic alignment fast response FIS-VA-3T liquid crystal display Download PDFInfo
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Abstract
The invention relates to a homeotropic alignment fast response FIS-VA-3T liquid crystal display. The liquid crystal display comprises two polarizers, two equal-thickness negative C films, a double-axle film and a liquid crystal box, wherein the liquid crystal box is a liquid crystal box in a homeotropic alignment mode and comprises a glass substrate, an indium tin oxide (ITO) public face electrode, an insulating layer, a strip-shaped ITO pixel electrode, an upper oriented layer, a lower oriented layer, a liquid crystal material, an upper layer ITO face electrode, spherical resin powder and a frame adhesive; the width W of the strip-shaped ITO pixel electrode is between 1 and 6 mu m; and the interval G of the strip-shaped ITO pixel electrode is between 1 and 20 mu m. Compared with the conventional homeotropic alignment in-plane switching (IPS) liquid crystal display, the liquid crystal display designed by the invention has a shutdown response speed which is increased by more than 10 times and is up to 0.18 ms, realizes the total response time of 0.55 ms and has a simple and easily-realized process.
Description
Technical field
The present invention relates to a kind of vertical plane and arrange the liquid crystal display pattern of response fast, be specially a kind of vertical plane and arrange the FIS-VA-3T LCD of response fast,
Background technology
Vertical plane is arranged IPS LCD (IPS-VA LCD), is the LCD of utilizing the interelectrode coplane electric field driven of the strip ITO lqiuid crystal molecule tipping on the lower glass substrate.It has quick response and wide viewing angle characteristics, can be widely used in the desktop computer display, large-size screen monitors LCD such as LCD TV.
It all is that liquid crystal molecule freely relaxes towards the drive pattern of original state after adopting the operating voltage of removing on the strip ITO electrode that the tradition vertical plane is arranged the IPS LCD, closed since like this response time length (～3ms).
Summary of the invention
The objective of the invention is to solve the slow problem of pass response speed that traditional vertical plane is arranged the IPS LCD, provide a kind of vertical plane to arrange the FIS-VA-3T LCD of response fast.Adopt newly-designed FIS-3T electrode structure, by adding O.5ms 10V potential pulse for lower floor's ito surface electrode and strip shaped electric poles closing response process, interelectrode vertical electric field in the utilization on ito surface electrode and the lower glass substrate makes liquid crystal molecule get back to the dark attitude that vertical plane is arranged rapidly, identical liquid crystal material and liquid crystal cell are thick, arranging the IPS LCD with traditional vertical plane compares, realized (～0.18ms) the raising of pass response speed more than 10 times, realized the 0.55ms overall response time, the realization that colored sequential is shown has far reaching significance, has kept traditional vertical plane to arrange the wide viewing angle characteristics of IPS LCD simultaneously.
Technical solution of the present invention is as follows:
A kind of vertical plane is arranged the FIS-VA-3T LCD (FIS-VA-3T LCD) of response fast, it is characterized by this LCD and comprises: two polaroids (being divided into the polarizer and analyzer), two negative C films of equal thickness, biaxial film, liquid crystal cell; Its position relation is followed successively by: the polarizer, the first negative C film, liquid crystal cell, the second negative C film, biaxial film and analyzer, light are successively by the polarizer, the first negative C film, liquid crystal cell, the second negative C film, biaxial film and analyzer;
Described liquid crystal cell is the liquid crystal cell of vertical plane pattern of rows and columns, comprising: glass substrate, tin indium oxide (ITO) common sides electrode, insulation course, strip ITO pixel electrode, oriented layer, liquid crystal material, upper strata ito surface electrode, spherical resin powder and frame adhesive up and down; Its position successive relation is from bottom to top: lower glass substrate, ITO common sides electrode, insulation course, strip ITO pixel electrode, time oriented layer, liquid crystal material and spherical resin powder sept, last oriented layer, upper strata ito surface electrode, top glass substrate.Last lower glass substrate is closed with edge sealing frame sticker.
Upper strata ito surface electrode in the described liquid crystal cell on the top glass substrate inside surface and the ITO common sides electrode shape on the lower glass substrate inside surface are planar electrode,
Described strip ITO pixel electrode is: electrode widths W=1～6 μ m, electrode separation G=1～20 μ m.
Described strip ITO pixel electrode is distributed as " it " word shape (zigzag) on insulation course; Adjacent strip ITO pixel electrode adds the opposite voltage of electromotive force.
Described insulation course is the thick silicon dioxide insulating layer of 0.1～1 μ m;
The thickness d of described liquid crystal layer=3～10 μ m.
Described liquid crystal material is the positivity liquid crystal material, concrete (MLC-2043 that Merck company produces) parameter: ε
//=18, ε
⊥=4, n
o=1.6794, n
e=1.4794, K
11=10.87pN, K
22=9.5pN, K
33=15.37pN, γ
1=0.1Pas.
Described liquid crystal cell border strong anchoring, the pre-dumping angle of two glass substrate place liquid crystal and orientation angles all are 90 ° and 0 ° up and down.
Described two equal thickness are born the C film, and thickness all is 32.5 μ m, and the refractive index parameter is: n
e=1.483, n
o=1.493.
Described biaxial film thickness is 184 μ m, and the refractive index parameter is: n
x=1.511, n
y=1.5095, n
z=1.51025, the position angle is-45 °, and two polaroids that adopted in the simulation all adopt desirable polaroid.
Described two glass substrates rely on the glue bond of edge sealing frame together, place in liquid crystal cell with the spherical resin powder of required thickness of liquid crystal layer coupling and control the thick of liquid crystal layer.
The electromotive force of described liquid crystal cell upper substrate face electrode is zero.
The present invention compared with prior art has following beneficial effect;
The characteristics of the LCD of the present invention's design are: by using newly-designed FIS-3T electrode structure, one deck common sides electrode is arranged on infrabasal plate, the strip pixel electrode is arranged on the public electrode, separate with insulation course silicon dioxide or silicon nitride between public electrode and the strip pixel electrode, in the upper substrate inboard face electrode is arranged, the triple electrode structure that constitutes can improve the pass response speed.Close response process, by adding the 10V potential pulse of 0.5ms for lower floor's ito surface electrode and strip shaped electric poles, utilize the interelectrode vertical electric field on upper strata ito surface electrode and the lower glass substrate to make liquid crystal molecule get back to the dark attitude that vertical plane is arranged rapidly, realized closing the significantly lifting of response speed, identical liquid crystal material and liquid crystal cell are thick, arrange the IPS LCD with respect to traditional vertical plane, closing response speed has improved more than 10 times, reached～0.18ms, and realized the overall response time of 0.55ms, will the realization that colored sequential shows be exerted far reaching influence, kept traditional vertical plane to arrange the wide viewing angle characteristics of IPS LCD simultaneously, and be simple and easy on the technology realize.
Description of drawings
Fig. 1 is that vertical plane of the present invention is arranged the integrally-built diagrammatic cross-section of FIS-VA-3T LCD of response fast.
Fig. 2 is that vertical plane of the present invention is arranged the FIS-VA-3T LCD (b) of response fast and the diagrammatic cross-section contrast that traditional vertical plane is arranged IPS LCD (a) electrode structure and the distribution of bright attitude liquid crystal molecule.
Fig. 3 is the vertical view that vertical plane of the present invention is arranged the word shape (zigzag) that the FIS-VA-3T LCD strip ITO pixel electrode of response fast makes.
Fig. 4 is that vertical plane of the present invention is arranged the response time contrast under the different electrode separations of the FIS-VA-3T LCD that responds fast, electrode widths W=1 μ m, electrode separation G=2 μ m (dotted line); Electrode separation G=4 μ m (dotted line); Electrode separation G=6 μ m (solid line).
Fig. 5 is that vertical plane of the present invention is arranged transmitance and voltage relationship figure contrast under the different electrode separations of the FIS-VA-3T LCD that responds fast, electrode widths W=1 μ m, electrode separation G=2 μ m (dotted line); Electrode separation G=4 μ m (dotted line); Electrode separation G=6 μ m (solid line).
Fig. 6 is FIS-VA-3T LCD and the traditional vertical plane arrangement IPS LCD TEST response process institute making alive synoptic diagram that vertical plane of the present invention is arranged response fast.
Fig. 7 is the FIS-VA-3T LCD (solid line) and the identical electrode size of traditional vertical plane arrangement IPS LCD (dotted line) that vertical plane of the present invention is arranged response fast: electrode widths W=1 μ m, the electrode separation G=4 μ m response time contrasts.
Fig. 8 is the FIS-VA-3T LCD (solid line) and the identical electrode size of traditional vertical plane arrangement IPS LCD (dotted line) that vertical plane of the present invention is arranged response fast: electrode widths W=1 μ m, electrode separation G=4 μ m transmitance and voltage relationship figure contrast.
Fig. 9 is the FIS-VA-3T LCD (b) and the identical electrode size of traditional vertical plane arrangement IPS LCD (a) that vertical plane of the present invention is arranged response fast: electrode widths W=1 μ m, the contrast visual angle figure contrast after the identical compensation of electrode separation G=4 μ m.
Embodiment
The vertical plane that the present invention makes is arranged the quick integrally-built diagrammatic cross-section of FIS-VA-3T LCD that responds as shown in Figure 1, its position is closed and is from bottom to top: the polarizer 1, the first negative C film 2, lower glass substrate 3, ITO common sides electrode 4, insulation course 5, strip ITO pixel electrode 6 and 7, time oriented layer 8, liquid crystal material 10 and spherical resin powder sept 9, last oriented layer 11, upper strata ito surface electrode 12, top glass substrate 13, the second negative C film 14, biaxial film 15, analyzer 16.
Wherein strip ITO pixel electrode 6 and strip ITO pixel electrode 7 are adjacent, the identical electrode in position, add the opposite voltage of electromotive force;
Wherein, the polarizer and analyzer are ideal polarizer, and the position angle of the polarizer is-45 °, and the first negative C film refractive index parameter is: n
e=1.483, n
o=1.493, thickness is 32.5 μ m, thickness of insulating layer is 0.3 μ m, strip ITO pixel electrode 6 and strip ITO pixel electrode 7 are electrode widths W=1 μ m, electrode separation G=4 μ m, oriented layer makes the liquid crystal molecule border strong anchoring of boundary up and down, near the pre-dumping angle of the liquid crystal of oriented layer is 90 ° up and down, orientation angles is 0 °, the described lower glass substrate that goes up relies on the glue bond of edge sealing frame together, control the thickness d=4 μ m of liquid crystal layer by the diameter of spherical resin powder, pour into material (MLC-2043 that Merck company produces) parameter: the ε of liquid crystal
//=18, ε
⊥=4, n
o=1.6794, n
e=1.4794, K
11=10.87pN, K
22=9.5pN, K
33=15.37pN, γ
1=0.1Pas, the second negative C film refractive index parameter is: n
e=1.483, n
o=1.493, thickness is 32.5 μ m, and biaxial film thickness is 184 μ m, and the refractive index parameter is: n
x=1.511, n
y=1.5095, n
z=1.51025, the position angle is-45 °, and the position angle of desirable analyzer is 45 °.Vertical plane of the present invention is arranged the electrode structure of the FIS-VA-3T LCD (b) that responds fast (for the design of electrode is described, so only provided the sectional view of electrode, omitted spherical resin powder sept 9 wherein, following oriented layer 8 parts such as grade,) and bright attitude liquid crystal molecule distributes and traditional vertical plane is arranged the electrode structure of IPS LCD (a) and the diagrammatic cross-section of bright attitude liquid crystal molecule distribution contrasts as shown in Figure 2, on the lower glass substrate between strip ITO pixel electrode 7 and strip ITO pixel electrode 6 and the ITO common sides electrode 4 silicon dioxide insulating layer 5 with 0.3 μ m separate, add upper strata ito surface electrode 12 at the top glass substrate inside surface.Fig. 3 has provided the vertical view that vertical plane of the present invention is arranged the word shape (zigzag) that the FIS-VA-3T LCD strip ITO pixel electrode of response fast makes, the word shape (zigzag) that strip ITO pixel electrode is made improves dispersion characteristics (liquid crystal molecule forms uniform four farmlands and arranges, and the knuckle of " it " word is set at 90 °).The response time that vertical plane is arranged under the different electrode separations of the FIS-VA-3T LCD that responds fast contrasts as shown in Figure 4, identical liquid crystal material parameter and liquid crystal cell are thick, electrode widths W=1 μ m, the electrode structure rise time 0.37ms of electrode separation G=2 μ m (dotted line), fall time 0.18ms; Electrode widths W=1 μ m, the electrode structure rise time 1.81ms of electrode separation G=4 μ m (dotted line), fall time 0.25ms; Electrode widths W=1 μ m, the electrode structure rise time 4.29ms of electrode separation G=6 μ m (solid line), fall time 0.3ms, as seen, the more little rise time of electrode separation is short more, but fall time is all extremely short, below 0.3ms, electrode widths W=1 μ m, the electrode structure of electrode separation G=2 μ m (dotted line) has been realized overall response time 0.55ms, this is of far-reaching significance to the realization that colored sequential shows.Fig. 5 is that vertical plane is arranged transmitance and voltage relationship figure comparison diagram under the different electrode separations of the FIS-VA-3T LCD that responds fast, and the big more transmitance of electrode separation is high more.Fig. 6 is FIS-VA-3T LCD and the traditional vertical plane arrangement IPS LCD TEST response process institute making alive synoptic diagram that vertical plane is arranged response fast.Vertical plane is arranged the response process of opening of the quick FIS-VA-3T LCD that responds, add on the adjacent strip ITO pixel electrode 7 and 6 20ms ± the 6V operating voltage, close response process, remove operating voltage, add the 10V potential pulse of 0.5ms for simultaneously upper strata ito surface electrode 12, remove potential pulse then.The tradition vertical plane is arranged the response process of opening of IPS LCD, adds 6V and the 0V operating voltage of 20ms on the adjacent strip ITO pixel electrode respectively, closes response process, removes operating voltage, allows liquid crystal molecule freely relax towards the dark attitude of vertical plane.Fig. 7 is the FIS-VA-3T LCD (solid line) and the identical electrode size of traditional vertical plane arrangement IPS LCD (dotted line) that vertical plane is arranged response fast: electrode widths W=1 μ m, the electrode separation G=4 μ m response time contrasts, the tradition vertical plane is arranged the rise time 1.9ms of IPS LCD, fall time 2.6ms, vertical plane is arranged the rise time 1.81ms of the FIS-VA-3T LCD of response fast, fall time 0.25ms, both rise time are close, improved fall time more than 10 times.Fig. 8 is the FIS-VA-3T LCD (solid line) and the identical electrode size of traditional vertical plane arrangement IPS LCD (dotted line) that vertical plane is arranged response fast: electrode widths W=1 μ m, electrode separation G=4 μ m transmitance and voltage relationship figure contrast, two kinds of display operating voltage are identical, the threshold voltage that vertical plane is arranged the FIS-VA-3T LCD that responds fast is low, be beneficial to driving, transmitance is slightly high.Fig. 9 is the FIS-VA-3T LCD (b) and the identical electrode size of traditional vertical plane arrangement IPS LCD (a) that vertical plane is arranged response fast: electrode widths W=1 μ m, contrast visual angle figure contrast after the identical compensation of electrode separation G=4 μ m, the visual angle of two kinds of displays is close, all has wide viewing angle characteristics.
Vertical plane is arranged the original state of the FIS-VA-3T LCD of response fast, and the liquid crystal molecule vertical plane is arranged, and under the effect of orthogonal polarizers and compensate film, obtains a good dark attitude.Open response process, on the adjacent strip ITO pixel electrode 7 and 6 of lower glass substrate, add ± operating voltage of 6V, ITO common sides electrode and upper strata ito surface electrode do not add any voltage, keep the 0V electronegative potential, utilize the fringe field of 4 at strip ITO pixel electrode and ITO common sides electrode and the coplane electric field between the ITO pixel electrode that liquid crystal molecule is toppled in opening response process, finally realize bright attitude.Close response process, the 10V potential pulse that strip ITO pixel electrode and infrabasal plate face electrode is added simultaneously 0.5ms, upper substrate face electrode potential is zero simultaneously, utilize the interelectrode vertical electric field of face on upper strata ito surface electrode and the lower glass substrate to make liquid crystal molecule get back to the dark attitude that vertical plane is arranged rapidly, realized improving the purpose of closing response speed.
The method for making of LCD of the present invention is a known technology, with reference to being got by publishing house of Beijing University of Post ﹠ Telecommunication publishes, model will is newly write " liquid crystal device technology basis ".
The present invention does not address part and is applicable to prior art.
Claims (9)
1. a vertical plane is arranged the FIS-VA-3T LCD of response fast, it is characterized by this LCD and comprises: two polaroids (being divided into the polarizer and analyzer), two negative C films of equal thickness, biaxial film, liquid crystal cell; Its position relation is followed successively by: the polarizer, the first negative C film, liquid crystal cell, the second negative C film, biaxial film and analyzer, light are successively by the polarizer, the first negative C film, liquid crystal cell, the second negative C film, biaxial film and analyzer;
Described liquid crystal cell is the liquid crystal cell of vertical plane pattern of rows and columns, comprising: glass substrate, tin indium oxide (ITO) common sides electrode, insulation course, strip ITO pixel electrode, oriented layer, liquid crystal material, upper strata ito surface electrode, spherical resin powder and frame adhesive up and down; Its position successive relation is from bottom to top: lower glass substrate, ITO common sides electrode, insulation course, strip ITO pixel electrode, time oriented layer, liquid crystal material and spherical resin powder sept, last oriented layer, upper strata ito surface electrode, top glass substrate.Last lower glass substrate is closed with edge sealing frame sticker;
Upper strata ito surface electrode in the described liquid crystal cell on the top glass substrate inside surface and the ITO common sides electrode shape on the lower glass substrate inside surface are planar electrode;
Described strip ITO pixel electrode is: electrode widths W=1～6 μ m, and electrode separation G=1～20 μ m, adjacent strip ITO pixel electrode adds the opposite voltage of electromotive force.
2. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, it is characterized by described strip ITO pixel electrode and be distributed as " it " word shape on insulation course.
3. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, and it is characterized by described insulation course is the thick silicon dioxide insulating layer of 0.1～1 μ m.
4. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, it is characterized by thickness d=3～10 μ m of described liquid crystal layer.
5. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, and it is characterized by described liquid crystal material is the positivity liquid crystal material, concrete (MLC-2043 that Merck company produces) parameter: ε
//=18, ε
⊥=4, n
o=1.6794, n
e=1.4794, K
11=10.87pN, K
22=9.5pN, K
33=15.37pN, γ
1=0.1Pa
S.
6. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, it is characterized by the negative C film of described two equal thickness, and thickness all is 32.5 μ m, and the refractive index parameter is: n
e=1.483, n
o=1.493.
7. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, and it is characterized by described biaxial film thickness is 184 μ m, and the refractive index parameter is: n
x=1.511, n
y=1.5095, n
z=1.51025, the position angle is-45 °;
8. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, it is characterized by described two polaroids and all adopts desirable polaroid.
9. vertical plane is arranged the FIS-VA-3T LCD of response fast according to claim 1, and the electromotive force that it is characterized by described liquid crystal cell upper substrate face electrode is zero.
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| CN102854672A (en) * | 2012-08-21 | 2013-01-02 | 深圳市华星光电技术有限公司 | Liquid crystal panel and liquid crystal display |
| CN102854670A (en) * | 2012-06-01 | 2013-01-02 | 京东方科技集团股份有限公司 | Liquid crystal display viewing angle controlling method, liquid crystal display panel and liquid crystal display |
| CN103018965A (en) * | 2012-12-12 | 2013-04-03 | 京东方科技集团股份有限公司 | Advanced super dimension switch liquid crystal display device and manufacturing method thereof |
| US20140340623A1 (en) * | 2013-05-16 | 2014-11-20 | Samsung Display Co., Ltd. | Liquid crystal display |
| CN105446026A (en) * | 2015-12-23 | 2016-03-30 | 武汉华星光电技术有限公司 | Liquid crystal display |
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| US20140184965A1 (en) * | 2012-06-01 | 2014-07-03 | Boe Technology Group Co., Ltd. | Lcd viewing angle control method, lcd panel and lcd |
| US9618779B2 (en) * | 2012-06-01 | 2017-04-11 | Boe Technology Group Co., Ltd. | LCD viewing angle control method, LCD panel and LCD |
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| CN104166256A (en) * | 2013-05-16 | 2014-11-26 | 三星显示有限公司 | Liquid crystal display |
| CN105446026A (en) * | 2015-12-23 | 2016-03-30 | 武汉华星光电技术有限公司 | Liquid crystal display |
| CN105446026B (en) * | 2015-12-23 | 2019-12-03 | 武汉华星光电技术有限公司 | Liquid crystal display |
| CN106773377A (en) * | 2016-12-07 | 2017-05-31 | 友达光电股份有限公司 | Display panel and control method thereof |
| CN106773377B (en) * | 2016-12-07 | 2019-05-10 | 友达光电股份有限公司 | display panel and control method thereof |
| CN107632469A (en) * | 2017-10-19 | 2018-01-26 | 武汉华星光电半导体显示技术有限公司 | The preparation method of display panel and display panel |
| CN108761935A (en) * | 2018-03-12 | 2018-11-06 | 昆山龙腾光电有限公司 | array substrate and liquid crystal display device and driving method |
| CN109521618A (en) * | 2018-12-03 | 2019-03-26 | 昆山龙腾光电有限公司 | Liquid crystal display panel and liquid crystal display device |
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Application publication date: 20110413 |