CN100385320C - Multi-area vertical calibrating liquid crystal display device - Google Patents
Multi-area vertical calibrating liquid crystal display device Download PDFInfo
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- CN100385320C CN100385320C CNB2005100059561A CN200510005956A CN100385320C CN 100385320 C CN100385320 C CN 100385320C CN B2005100059561 A CNB2005100059561 A CN B2005100059561A CN 200510005956 A CN200510005956 A CN 200510005956A CN 100385320 C CN100385320 C CN 100385320C
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Abstract
The present invention relates to a polyzonal vertical calibration liquid crystal display which comprises a first baseplate with a plurality of prominences and a first electrode, a second baseplate with a plurality of pixel electrodes, first slits and second slits, and a liquid crystal layer between the first baseplate and the second baseplate, wherein the first electrode is positioned on the surface of the first baseplate; the prominences are positioned on part of the surface of the first electrode; the pixel electrodes are positioned on the surface of the second baseplate; the first slits are positioned among the pixel electrodes; the first slits and the prominences are not interlaced with the projection of the second baseplate; the second slits are positioned on the edges of the first slits; the extending direction of the second slits and the prominences are interlaced with the projection of the second baseplate.
Description
[technical field]
The present invention relates to a kind of liquid crystal indicator, be meant a kind of liquid crystal indicator that is applicable to multi-area vertical calibrating especially.
[background technology]
The developing goal of LCD is to develop towards large scale, high briliancy, high contrast, wide viewing angle and high color saturation at present, and multi-area vertical calibrating (Multi-Domain VerticalAlignment is called for short MVA) is exactly a big countermeasure that solves liquid crystal indicator visual angle problem now.In the liquid crystal indicator of MVA type, because the viewing area is divided into a plurality of zones, makes liquid crystal arrange in the mode of mutual compensation, therefore can see identical phase difference value in different visual angles, and the phenomenon that does not have gray-scale inversion produces, and also can improve when shortening the response time simultaneously.
Known its side view of MVA liquid crystal indicator and vertical view are shown in Fig. 1 (a) and Fig. 1 (b), and wherein first electrode 11 is positioned at the surface of first substrate 1, and there are a plurality of protrusions 3 (protrusion) on the surface of first electrode 11; Pixel capacitors 4 is positioned at the surface of second substrate 2, a plurality of first slits 5 (slit) is arranged in order to pixel unit is come out at interval between pixel capacitors 4, and wherein liquid crystal molecule 7 angles of inclination of the same area are all identical.Also be known MVA liquid crystal indicator when same gray scale states, its angle of inclination is all identical.Yet because LCD is to utilize the ametropia characteristic of liquid crystal itself to show different GTGs, when the variable angle of the sight line of human eye and liquid crystal itself, the light intensity of experiencing is just inconsistent.Therefore, when being watched known MVA liquid crystal indicator (with reference to Fig. 1 (a)) by different visual angles, the sight line of human eye is all different with the angle of liquid crystal major axis, and the brightness of seeing is also inconsistent.Particularly under microstate, any two the adjacent display areas territories contiguous with the pixel capacitors protrusion of multi-area vertical calibrating liquid crystal display device, because the angle of the liquid crystal molecules tilt of these two adjacent areas, when energising, be not quite similar, so for the human eye of observing, the sight line of human eye is all different with the angle of liquid crystal major axis, and two adjacent domain brightness seeing are also inconsistent.For human eye, the brightness irregularities of two adjacent domains of protrusion.When this effect extends to whole panels viewing area, can cause the brightness irregularities of panel, the quality of demonstration reduces, and therefore needs badly and is improved.
[summary of the invention]
The present invention relates to a kind of multi-area vertical calibrating liquid crystal display device, comprise first substrate with a plurality of protrusions and first electrode, second substrate, and the liquid crystal layer between this first substrate and this second substrate with a plurality of pixel capacitors, first slit and second slit.Wherein first electrode is positioned at the surface of first substrate, and protrusion is positioned at the part surface of first electrode; Pixel capacitors is positioned at the surface of second substrate, first slit is between pixel capacitors, and the non-intersect mistake of first slit and the protrusion projection on second substrate, second slit is positioned at the edge of first slit, and the bearing of trend of second slit and the projection of protrusion on second substrate are staggered.
Multizone calibrating crystal display device of the present invention, the substrate of its use can be any transparency carrier, preferably glass substrate.Multizone calibrating crystal display device of the present invention, its pixel capacitors can be any existing transparent electrode materials, preferably tin indium oxide (IT0) or indium zinc oxide (IZO).Multizone calibrating crystal display device of the present invention preferably also further is provided with a colored filter at first substrate surface.Multizone calibrating crystal display device of the present invention optionally further is provided with functional element to increase or to improve its function, preferably also further comprises trace wiring (scanning line), signal line (signal line) and on-off element on second substrate.The on-off element of the multizone calibrating crystal display device of the invention described above is thin film transistor (TFT) preferably.Multizone calibrating crystal display device of the present invention preferably also further comprises the vertical calibration layer on pixel capacitors surface selectivity ground.Multizone calibrating crystal display device of the present invention also is preferably in second substrate surface and optionally further comprises a gate insulation layer or a passivation layer, to improve the insulativity between its circuit.
In addition, the crossing angular range of the bearing of trend of second slit of the present invention and the projection of this protrusion on second substrate can be any angle, preferably vertical angle.First slit of the present invention is not staggered with the projection of protrusion on second substrate, preferably parallel to each other.The systematicness that is distributed as of second slit in the same pixel capacitors of the present invention distributes, the length distribution of second slit of the present invention without limits, preferably the length of second slit is successively decreased or is increased progressively from the two ends, same edge of pixel capacitors to the centre.Spacing between second slit of the present invention distributes without limits, and preferably the spacing between second slit is successively decreased or increased progressively from the two ends, same edge of pixel capacitors to the centre.Because the length of second slit or the change of arranging density can produce different electric fields when voltage is provided between pixel capacitors, make liquid crystal molecule produce the different anglecs of rotation.Be with liquid crystal indicator of the present invention, near different second slits liquid crystal molecule has different pitch angle when same GTG, make that the angle of inclination of liquid crystal molecule of the present invention same thrust adjacent area in same pixel is all inequality, but it is because the systematicness that is scattered in of second slit distributes, and the angle of inclination of liquid crystal molecule also becomes systematicness to distribute.And the population mean refractive index that the penetrability of known LCD and liquid crystal molecules tilt angle are caused is relevant, after second slit disclosed in this invention is set, the population mean liquid crystal molecules tilt angle of the adjacent area of thrust is slightly identical, so the population mean refractive index that cause at the liquid crystal molecules tilt angle much at one, therefore the penetrability of the adjacent area of thrust much at one, improve the liquid crystal indicator Luminance Distribution so can reach, the effect of homogenising liquid crystal indicator brightness.Liquid crystal indicator of the present invention is except reaching the wide viewing angle, and same GTG watches Shi Junke to obtain same brightness at different visual angles.
[description of drawings]
Fig. 1 (a) is known multi-area vertical calibrating liquid crystal display device side view.
Fig. 1 (b) is known multi-area vertical calibrating liquid crystal display device vertical view.
Fig. 2 (a) is the liquid crystal indicator side view of the first embodiment of the present invention.
Fig. 2 (b) is the liquid crystal indicator vertical view of first embodiment of the invention.
Fig. 2 (c) is the graph of a relation of liquid crystal indicator of the present invention brightness and GTG under different visual angles.
Fig. 3 (a) is the liquid crystal indicator side view of second embodiment of the invention.
Fig. 3 (b) is the liquid crystal indicator vertical view of second embodiment of the invention.
Fig. 4 (a) is the liquid crystal indicator side view of third embodiment of the invention.
Fig. 4 (b) is the liquid crystal indicator vertical view of third embodiment of the invention.
Fig. 5 (a) is the liquid crystal indicator side view of fourth embodiment of the invention.
Fig. 5 (b) is the liquid crystal indicator vertical view of fourth embodiment of the invention.
Fig. 6 is the collocation structure synoptic diagram of the figure of formation slit of the present invention.
[main element symbol description]
1 first substrate, 2 second substrates, 3 protrusions
4 pixel capacitors, 5 first slits, 6 second slits
7 liquid crystal molecules, 11 first electrodes, 12 colored filters
21 gate pole oxidation layers, 22 passivation layers, 60 membrane transistors
61 gate circuits, 62 trace wirings, 63 vertical calibration layers
[embodiment]
At first, see also Fig. 2 (a) and Fig. 2 (b), it is the side view and the vertical view of multizone calibration display device of the present invention, and this multizone calibration display device comprises first substrate 1, second substrate 2 and a negative type liquid crystal layer 7.Fig. 2 (a) and Fig. 2 (b) illustrate first electrode 11, a plurality of protrusion 3, pixel capacitors 4, first slit 5 and second slit 6.Wherein first electrode 11 is positioned at the surface of first substrate 1, and first substrate, 1 surface has a plurality of protrusions 3.And the pixel capacitors 4 that is positioned at second substrate, 2 surfaces has a plurality of first slits 5 that are parallel to protrusion 3, in order to interval pixel capacitors 4.Second slit 6 is positioned at the edge of first slit 5, and its bearing of trend is vertical with the projection of protrusion 3 on second substrate 2, and the length of second slit 6 (L) increases progressively to the centre from the two ends, same edge of pixel capacitors 4.The negative type liquid crystal layer of this specific embodiment is between first substrate 1 and second substrate 2.When providing a voltage for this liquid crystal indicator, its electric field can be subjected to second slit, 6 effect length, make the negative type liquid crystal molecule 7 of same GTG produce different pitch angle, promptly the angle of inclination of liquid crystal molecule same thrust adjacent area in same pixel is all inequality.But because the systematicness that is scattered in of second slit 6 distributes, the angle of inclination of liquid crystal molecule 7 also becomes systematicness to distribute.And the population mean refractive index that cause at the penetrability of known LCD and liquid crystal molecules tilt angle is relevant, after second slit disclosed by the invention is set, the population mean liquid crystal molecules tilt angle of the adjacent area of thrust is approximately identical, so the population mean refractive index that cause at the liquid crystal molecules tilt angle much at one, therefore the penetrability of the adjacent area of thrust much at one, improve the liquid crystal indicator Luminance Distribution so can reach, the purpose of homogenising liquid crystal indicator brightness.Therefore, no matter this liquid crystal indicator all can obtain the same brightness value (Fig. 2 (c)) from which angle.
Fig. 3 (a) and Fig. 3 (b) provide another embodiment of multi-area vertical calibrating liquid crystal display device of the present invention, i.e. another specific embodiment.Please refer to Fig. 3 (a), simultaneously Fig. 3 (b) is depicted as among Fig. 3 (a) along the cross-section structure of A-B line crosscut, wherein shows a colored filter 12 between first substrate 1 and first electrode 11, and the surface of first electrode 11 has a plurality of protrusions 3.On second substrate, a gate insulation layer 21 and a passivation layer 22 are between second substrate 2 and pixel capacitors 4; The surface of this pixel capacitors 4 has a vertical calibration layer 63, and has a plurality of first slits 5 that are parallel to protrusion 3, in order to the interval pixel capacitors.Second slit 6 is positioned at the edge of first slit 5, and its bearing of trend is vertical with the projection of protrusion 3 on second substrate 2, and the length of second slit 6 (L) is successively decreased to the centre from the two ends, same edge of pixel capacitors 4; And a negative type liquid crystal layer 7 is between first substrate 1 and second substrate 2.In addition, have thin film transistor (TFT) (TFT) 60 to be connected with pixel capacitors 4, in order to the on-off element as this liquid crystal indicator, and this TFT60 is connected with trace wiring 61 and a gate circuit 62 respectively.Therefore, when TFT60 provided a voltage for this liquid crystal indicator, its electric field can be subjected to the influence of second slit, 6 length.When second slit, 6 length more in short-term, the liquid crystal molecules tilt angle is littler.Successively decrease (Fig. 3 (b)) to the centre from the two ends, same edge of pixel capacitors in the pitch angle that is liquid crystal molecule, so that obtain the mean value of uniform liquid crystal slanted angle.Because the systematicness that is scattered in of second slit 6 distributes, the angle of inclination of liquid crystal molecule also becomes systematicness to distribute.And the population mean refractive index that the penetrability of known LCD and liquid crystal molecules tilt angle are caused is relevant, after second slit 6 disclosed in this invention is set, the population mean liquid crystal molecules tilt angle of the adjacent area of thrust 3 is approximately identical, so the population mean refractive index that cause at the liquid crystal molecules tilt angle much at one, therefore the penetrability of the adjacent area of thrust 3 much at one, improve the liquid crystal indicator Luminance Distribution so can reach, the purpose of homogenising liquid crystal indicator brightness.
Fig. 4 (a) and Fig. 4 (b) provide another embodiment of multi-area vertical calibrating liquid crystal display device of the present invention, i.e. another specific embodiment.Please refer to Fig. 4 (a), simultaneously Fig. 4 (b) is depicted as among Fig. 4 (a) cross-section structure along the crosscut of A-B line, wherein second slit 6 has different spacing widths, and its width (W) increases progressively to the centre from the two ends, same edge of this pixel capacitors 4, and other devices are identical with Fig. 3 (a).When TFT60 provided a voltage for this liquid crystal indicator, its second slit, 6 spacing widths (W) were bigger, and the pitch angle of liquid crystal molecule is littler.And this design effect is approximate with the foregoing description, because the systematicness that is scattered in of second slit 6 distributes, so the angle of inclination of liquid crystal molecule 7 also becomes systematicness to distribute.And the population mean refractive index that cause at the penetrability of known LCD and liquid crystal molecules tilt angle is relevant, after second slit 6 disclosed in this invention is set, the population mean liquid crystal molecules tilt angle of the adjacent area of thrust 3 is approximately identical, so the population mean refractive index that cause at the liquid crystal molecules tilt angle much at one, therefore the penetrability of the adjacent area of thrust 3 much at one, improve the liquid crystal indicator Luminance Distribution so can reach, the purpose of homogenising liquid crystal indicator brightness.Successively decrease (Fig. 4 (b)) to the centre from the two ends, same edge of pixel capacitors in the pitch angle that is liquid crystal molecule, to obtain the mean value of uniform liquid crystal angle, so can improve the Luminance Distribution of liquid crystal indicator.
Fig. 5 (a) and Fig. 5 (b) provide another embodiment of multi-area vertical calibrating liquid crystal display device of the present invention, i.e. another specific embodiment.Please refer to Fig. 5 (a), simultaneously Fig. 5 (b) is depicted as among Fig. 5 (a) cross-section structure along the crosscut of A-B line, wherein second slit 6 has different spacing widths, and its width (W) successively decreases to the centre from the two ends, same edge of this pixel capacitors, and other devices are identical with Fig. 3 (a).When TFT60 provided a voltage for this liquid crystal indicator, its second slit, 6 spacing widths (W) were bigger, and the pitch angle of liquid crystal molecule is littler.This design effect, approximate with the foregoing description, because the systematicness that is scattered in of second slit 6 distributes, the angle of inclination of liquid crystal molecule 7 also becomes systematicness to distribute.And the population mean refractive index that cause at the penetrability of known LCD and liquid crystal molecules tilt angle is relevant, after disclosed second slit 6 of invention is set, the population mean liquid crystal molecules tilt angle of the adjacent area of thrust 3 is rough identical, so the population mean refractive index that cause at the liquid crystal molecules tilt angle much at one, therefore the penetrability of the adjacent area of thrust 3 much at one, improve the liquid crystal indicator Luminance Distribution so can reach, the purpose of homogenising liquid crystal indicator brightness.The pitch angle that is liquid crystal molecule increases progressively (Fig. 5 (b)) from the two ends, same edge of pixel capacitors to the centre, to obtain the mean value of uniform liquid crystal angle.
In addition, second slit 6 of the present invention is in order to obtain a smooth corner, the light mask image of the slit that forms when the gold-tinted etching is made need have a collocation structure usually, and its preferable figure has an outstanding rectangle collocation structure at the corner of slit as shown in Figure 6.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion with claims, but not only limits to the foregoing description.
Claims (15)
1. multi-area vertical calibrating liquid crystal display device comprises:
First substrate with a plurality of protrusions and first electrode, wherein this first electrode is positioned at the surface of this first substrate, and this protrusion is positioned at the part surface of this first electrode;
Second substrate with a plurality of pixel capacitors, a plurality of first slit and a plurality of second slits; Wherein this pixel capacitors is positioned at the surface of this second substrate, this first slit is between the adjacent image point electrode, this first slit and this protrusion non-intersect mistake of projection on this second substrate, this second slit is positioned at the edge of this first slit, and the bearing of trend of this second slit is staggered with the projection of this protrusion on this second substrate; And
A liquid crystal layer between this first substrate and this second substrate.
2. device as claimed in claim 1, wherein the crossing angle of the bearing of trend of this second slit and this protrusion projection on this second substrate is a vertical angle.
3. device as claimed in claim 1, wherein this first slit is parallel with the projection of this protrusion on this second substrate.
4. the systematicness that is distributed as of this second slit in the device as claimed in claim 1, wherein same pixel capacitors distributes.
5. device as claimed in claim 4, wherein the length of this second slit is successively decreased to the centre from the two ends, same edge of this pixel capacitors.
6. device as claimed in claim 4, wherein the length of this second slit increases progressively to the centre from the two ends, same edge of this pixel capacitors.
7. device as claimed in claim 4, wherein the spacing width between this second slit successively decreases to the centre from the two ends, same edge of this pixel capacitors.
8. device as claimed in claim 4, wherein the spacing width between this second slit increases progressively to the centre from the two ends, same edge of this pixel capacitors.
9. device as claimed in claim 1, wherein this first substrate further comprises a colored filter, and this colored filter is positioned at the surface of this first substrate.
10. device as claimed in claim 1, wherein this second substrate further comprises a plurality of trace wirings, a plurality of signal line and a plurality of on-off element.
11. device as claimed in claim 1, wherein this infrabasal plate further comprises a vertical calibration layer, and this vertical calibration layer is positioned at the surface of this pixel capacitors.
12. device as claimed in claim 1, wherein this second substrate comprises that further a gate insulation layer or passivation layer are positioned at the surface of this second substrate.
13. device as claimed in claim 1, wherein this first substrate and second substrate are glass substrate.
14. device as claimed in claim 1, wherein this pixel capacitors is tin indium oxide or indium zinc oxide.
15. device as claimed in claim 1, wherein this on-off element is a thin film transistor (TFT).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100059561A CN100385320C (en) | 2005-01-31 | 2005-01-31 | Multi-area vertical calibrating liquid crystal display device |
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| CNB2005100059561A CN100385320C (en) | 2005-01-31 | 2005-01-31 | Multi-area vertical calibrating liquid crystal display device |
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| CN1815336A CN1815336A (en) | 2006-08-09 |
| CN100385320C true CN100385320C (en) | 2008-04-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101515095B (en) * | 2009-04-03 | 2013-04-10 | 友达光电股份有限公司 | Pixel structure, touch control type display panel and liquid crystal display |
| KR101829454B1 (en) * | 2010-07-30 | 2018-02-20 | 삼성디스플레이 주식회사 | Liquid crystal display panel equipped with unit-pixels having multi-domain and optical mask for manufacturing the same |
| US9274377B2 (en) * | 2012-03-13 | 2016-03-01 | Samsung Display Co., Ltd. | Liquid crystal display device |
| CN106896605A (en) * | 2013-06-28 | 2017-06-27 | 群创光电股份有限公司 | Image element array substrates and liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000305100A (en) * | 1999-02-15 | 2000-11-02 | Fujitsu Ltd | Liquid crystal display device |
| JP2001249350A (en) * | 2000-03-03 | 2001-09-14 | Nec Corp | Liquid crystal display device and method of manufacturing the same |
| JP2001249340A (en) * | 2000-03-06 | 2001-09-14 | Fujitsu Ltd | Liquid crystal display device |
| JP2002040432A (en) * | 2000-07-27 | 2002-02-06 | Sony Corp | Liquid crystal display device |
| CN1506722A (en) * | 2002-12-05 | 2004-06-23 | 奇美电子股份有限公司 | Liquid crystal display |
| CN1553254A (en) * | 2003-06-05 | 2004-12-08 | 友达光电股份有限公司 | Multi-vision vertical oriented liquid crystal display device |
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2005
- 2005-01-31 CN CNB2005100059561A patent/CN100385320C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000305100A (en) * | 1999-02-15 | 2000-11-02 | Fujitsu Ltd | Liquid crystal display device |
| JP2001249350A (en) * | 2000-03-03 | 2001-09-14 | Nec Corp | Liquid crystal display device and method of manufacturing the same |
| JP2001249340A (en) * | 2000-03-06 | 2001-09-14 | Fujitsu Ltd | Liquid crystal display device |
| JP2002040432A (en) * | 2000-07-27 | 2002-02-06 | Sony Corp | Liquid crystal display device |
| CN1506722A (en) * | 2002-12-05 | 2004-06-23 | 奇美电子股份有限公司 | Liquid crystal display |
| CN1553254A (en) * | 2003-06-05 | 2004-12-08 | 友达光电股份有限公司 | Multi-vision vertical oriented liquid crystal display device |
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