CN2735386Y - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN2735386Y CN2735386Y CN 200420088470 CN200420088470U CN2735386Y CN 2735386 Y CN2735386 Y CN 2735386Y CN 200420088470 CN200420088470 CN 200420088470 CN 200420088470 U CN200420088470 U CN 200420088470U CN 2735386 Y CN2735386 Y CN 2735386Y
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- liquid crystal
- crystal indicator
- display device
- pixel electrode
- public electrode
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Abstract
The utility model provides a liquid crystal display device, comprising a first basal plate, a second basal plate, a liquid crystal layer and two polarizing slices. The liquid crystal layer is arranged between the first basal plate and the second basal plate. The two polarizing slices are respectively arranged on the first basal plate and the second basal plate. Wherein, at least one polarizing slice is arranged on the inner surface of the relevant basal plate. The liquid crystal display device can eliminate the breakage of the polarizing light because of a color filter and raise the polarizing efficiency and the light penetrating efficiency. The liquid crystal display device is not easy to be scuffed. The chemical solvent proof characteristic is good. Moreover, when using the unordinary light polarization type polarizing slices, the liquid crystal display device can obtained a higher contrast grade according to a bigger scope of visual angle. Therefore, the quality of image display is raised.
Description
[technical field]
The utility model is about a kind of liquid crystal indicator.
[background technology]
Liquid crystal indicator is because of characteristics such as have low diathermaneity, volume is compact and power consumption is low, thus day by day extensive in the use, and along with the ripe and innovation of correlation technique, its kind is also various day by day.
Divide from the mode of utilizing to incident light, liquid crystal indicator can be divided into penetration, semi-penetration, semi-reflective and reflective three kinds.Yet, no matter be penetration, semi-penetration, semi-reflective or reflective liquid crystal indicator, usually when the user watched liquid crystal indicator display frame from different perspectives, the contrast of image can reduce along with the increase of viewing angle, thereby produced angle limitations.Be twisted nematic (the Twisted Nematic that overcomes early stage appearance, TN) and super-twist nematic (Super TwistedNematic, STN) there is the narrow defective in visual angle in liquid crystal indicator, HIT (Hitachi) takes the lead in proposing rotary mode in a kind of plane (In-Plane Switching mode, wide viewing angle liquid crystal display device IPS).This kind IPS liquid crystal indicator and traditional twisted nematic, the difference of super-twist nematic liquid crystal indicator are: its public electrode and pixel electrode are arranged on the same substrate, utilize the transverse horizontal electric field that produces between public electrode and pixel electrode that liquid crystal molecule is rotated in the plane.This kind IPS liquid crystal indicator can significantly improve the visual angle of liquid crystal indicator, but because its public electrode and pixel electrode are arranged on the same substrate, makes aperture opening ratio lower.
For overcoming the above-mentioned defective of IPS liquid crystal indicator, a kind of fringe field switch (Fringe FieldSwitching appears, FFS) type liquid crystal indicator, this kind FFS liquid crystal indicator improves the electrode setting mode of IPS liquid crystal indicator, its public electrode and pixel electrode are to be located at respectively on the different layers of same substrate, public electrode is positioned under the pixel electrode and is arranged on the whole base plate surface, thereby can improve IPS liquid crystal indicator aperture opening ratio defect of insufficient.
In addition, for reaching the purpose of wide viewing angle, the main flow wide viewing angle technology of having developed at present also has multi-zone vertical alignment nematic (Multi-Domain Vertical Alignment, MVA) wide viewing angle technology, and optics compensate for bend (Optically Compensated Bend, OCB) wide viewing angle technology etc.
Seeing also Fig. 1, is example with penetration FFS type liquid crystal indicator, and prior art FFS type liquid crystal indicator 1 comprises that two relative transparent lower substrate 10 and upper substrate 20, liquid crystal molecules 30 are distributed between this infrabasal plate 10 and the upper substrate 20.Wherein, this liquid crystal molecule 20 is arranged in order; One transparent common electrode 11, a transparent insulating layer 12, a transparent pixels electrode 13 reach, and alignment film 14 is successively set on these infrabasal plate 10 inside surfaces.Alignment film 24 is arranged on upper substrate 20 inside surfaces in regular turn on one colored filter 25 and, and this colored filter 25 comprises the RGB dyed layer (figure does not show) that is provided with at interval by black matrix".The mutually perpendicular polaroid 30,40 in a pair of polarization direction is attached to the outside surface of substrate 10,20 respectively.
The polaroid 30,40 that prior art FFS type liquid crystal indicator 1 adopts is ordinary light polarization-type polaroid (Ordinary type polarizer), and the polarized light property of this kind ordinary light polarization-type polaroid is: the incident light of ordinary polarization state can pass; When passing, the incident light of extraordinary polarization state will be absorbed.The main material of this polaroid 30,40 is that (Polyvinyl Alcohol PVA), because the PVA resistance to elevated temperatures is relatively poor, is no more than 80 ℃ to polyvinyl alcohol (PVA) usually, thereby liquid crystal indicator is unsuitable for the environment use down of higher temperature; And this polaroid the 30, the 40th is attached to the outside surface of substrate 10,20, very easily by scratch, thereby makes the application of liquid crystal indicator 1 be subjected to certain limitation.
In the reality, two ordinary light polarization-type polaroids that use is orthogonally set 30,40 o'clock, the contrast of image can sharply reduce (seeing also shown in Fig. 2 curve I) along with the increase of viewing angle, thereby produces angle limitations; And using the two ordinary light polarization-type polaroids be orthogonally set at 30,40 o'clock, liquid crystal indicator 1 is comparatively serious at part viewing area light leak.Please refer to Fig. 3, is the liquid crystal indicator light leak characteristic synoptic diagram that prior art adopts the ordinary light polarization-type polaroid that is orthogonally set.Different position angle in the outer same plane of numeral of circle wherein is that the horizontal line that end points extends to the right is 0 degree position angle datum line with the center of circle among Fig. 3, is that benchmark is rotated counterclockwise all position angles and increases by 360 and spend with this horizontal line; The numeral observer's sight line in the circle and the formed visual angle of normal of display plane; Wherein the shadow region then is the higher zone of contrast, white portion is the more serious zone of light leak, its contrast is low, as can be seen from Figure 3, this flat display apparatus 60 the position angle be 0 degree angle, an angle of 90 degrees, 180 degree angles, 270 degree angles and near the light leak of viewing area comparatively serious, so its image display quality is not good.
These two polaroids 30,40 adopt the outer set-up mode that pastes, the polarized light of gained needs can arrive another polaroid 40 earlier behind this colored filter 25 after polaroid 30 effects, the black matrix" of colored filter 25 and RGB dyed layer produce certain absorption and scattering process to the polarized light that passes wherein, thereby formed polarized light after polaroid 30 effect damaged, reduce the polarisation efficient and the light transmittance of liquid crystal indicator 1, influence its image display quality.
[utility model content]
The comparatively serious problem of wide-angle light leak in order to overcome in the prior art that the polaroid of liquid crystal indicator is attached to outer surface of substrate and when causing polaroid easy damaged and image to show, the utility model provides a kind of not easy damaged polaroid and the preferable liquid crystal indicator of display view angle.
The technical scheme that the utility model technical solution problem is adopted is: provide a liquid crystal indicator to comprise first substrate, second substrate, a liquid crystal layer and two polaroids, this liquid crystal layer is between this first substrate and this second substrate, these two polaroids are located at respectively on this first and second substrate, wherein, at least one polaroid is arranged on the corresponding substrate inner surface.
The further improvement of the technical scheme that the utility model technical solution problem is adopted is: these two polaroids adopt extraordinary ray polarization-type polaroid.
Compared to existing technology, the beneficial effects of the utility model are: polaroid is arranged on corresponding substrate inner surface, can eliminate the destruction of colored filter to polarized light, improves polarisation efficient and light transmittance, and is difficult for by scratch the chemically-resistant solvent; When using extraordinary ray polarization-type polaroid, liquid crystal indicator all can obtain higher contrast in bigger angular field of view, thereby promotes the display quality of its image, makes the application of liquid crystal indicator more extensive.
[description of drawings]
Fig. 1 is the diagrammatic cross-section of prior art liquid crystal indicator, and wherein two polaroids are affixed on outward on the outer surface of corresponding substrate.
Fig. 2 adopts the contrast-response characteristic comparison diagram of the liquid crystal indicator of ordinary light polarization-type polaroid in the different visual angles scope.
Fig. 3 shows the liquid crystal indicator light leak characteristic synoptic diagram that adopts the ordinary light polarization-type polaroid that is orthogonally set.
Fig. 4 is the diagrammatic cross-section of the utility model liquid crystal indicator first embodiment.
Fig. 5 adopts the contrast-response characteristic comparison diagram of the liquid crystal indicator of extraordinary ray polarization-type polaroid in the different visual angles scope.
Fig. 6 shows the liquid crystal indicator light leak characteristic synoptic diagram that adopts the extraordinary ray polarization-type polaroid that is orthogonally set.
Fig. 7 is the diagrammatic cross-section of the utility model liquid crystal indicator second embodiment.
Fig. 8 is the diagrammatic cross-section of the utility model liquid crystal indicator the 3rd embodiment.
[embodiment]
Fig. 4 is the diagrammatic cross-section of the utility model liquid crystal indicator first embodiment, with penetration FFS type liquid crystal indicator is example, the utility model liquid crystal indicator comprises that upper substrate 120, that an infrabasal plate 110, one and this infrabasal plate 110 are oppositely arranged is positioned at the liquid crystal layer 130 of 110,120 of this two substrates.
Be sequentially provided with a public electrode 111, an insulation course 112, a plurality of pixel electrode 113, once polaroid 141 and both alignment layers 116 once on these infrabasal plate 110 inner surfaces.Be sequentially provided with on the colored filter 127, a both alignment layers 126 on the polaroid 143 and on these upper substrate 120 inner surfaces.This insulation course 112 adopts the transparent insulation material, makes this public electrode 111 and pixel electrode 113 keep electric insulation.This public electrode 111 and pixel electrode 113 adopts transparent conductive materials to make, as tin indium oxide (Indium Tin Oxide, ITO) or indium zinc oxide (Indium Zinc Oxide, IZO) etc.This public electrode 111 is arranged on the whole infrabasal plate 110, the strip like transparent electrode that this pixel electrode 113 is provided with for parallel interval.When applying a driving voltage, can produce an edge electric field between this public electrode 111 and the pixel electrode 113, this fringe field can make the liquid crystal molecule of liquid crystal layer 130 planar rotate.It is to be parallel to each other or to differ 180 ° to arrange so that the liquid crystal molecule of liquid crystal layer 130 is done horizontal direction that this both alignment layers 116,126 adopts friction matching manufacturing process to make its alignment direction.
This time polaroid 141 and last polaroid 143 quadrature settings, both polarization directions are vertical mutually.These two polaroids the 141, the 143rd adopt extraordinary ray polarization-type polaroid, it is made by the organic dyestuff with liquid crystal phase (Liquid-crystalline Phase), and its polarized light property is: the incident light of extraordinary polarization state can pass this polaroid 141,143; The incident light of ordinary polarization state passes this polaroid and will be absorbed in 141,143 o'clock.The thickness of this polaroid 141,143 is generally less than 100 microns, and thickness is quite frivolous, so it can cause harmful effect to the operating voltage of liquid crystal indicator 100 when being separately positioned on corresponding substrate 110,120 inner surfaces hardly.
These two polaroids 141,143 are arranged between the liquid crystal layer and colored filter 127 of corresponding substrate 110,120 inboards, can eliminate the destruction and the scattering of 127 pairs of polarized lights of colored filter, improve polarisation efficient and light transmittance, thereby promote the image display quality of liquid crystal indicator 100.These two polaroids 141,143 adopt the set-up mode that is built in corresponding substrate inboard, are difficult for by scratch, and the chemically-resistant solvent makes the application of liquid crystal indicator 100 more extensive.
The ordinary light polarization-type polaroid that liquid crystal indicator 100 of the present utility model adopts built-in extraordinary ray polarization-type polaroid 141,143 to replace traditional external labeling type has following advantage: consult shown in Figure 5, wherein, curve II adopts the contrast response curve figure of the liquid crystal indicator of extraordinary ray polarization-type polaroid in the different visual angles scope, when using extraordinary ray polarization-type polaroid, liquid crystal indicator 100 all can obtain higher contrast in bigger angular field of view, thereby promotes the display quality of its image.See also Fig. 6, wherein, Fig. 6 shows the light leak characteristic synoptic diagram that adopts mutually orthogonal extraordinary ray polarization-type polaroid.Because the mutually orthogonal extraordinary ray polarization-type polaroid and the optical axis of ordinary light polarization-type polaroid are parallel to each other, light leak to any angle incident light wave all can be complementary, thereby collocation was used an extraordinary ray polarization-type polaroid 241,341 and an ordinary light polarization-type polaroid at 243,343 o'clock in the liquid crystal indicator 200,300 of the present utility model, the light leak of wide-angle can be significantly reduced, thereby the image display quality of liquid crystal indicator 100 can be further improved.And these built-in two polaroids, 141,143 thickness are frivolous, can make liquid crystal indicator 100 outward appearances more frivolous.In addition, extraordinary ray polarization-type polaroid 141,143 heat resisting temperatures that the utility model adopts are 200 ℃, and are more high temperature resistant; And, can directly two polaroids 141,143 be plated on the corresponding substrate 110,120 in the processing procedure, can save a large amount of artificial outer costs that paste polaroid of traditional employing.
Seeing also Fig. 7, is the synoptic diagram of the utility model liquid crystal indicator second embodiment.Improvement that this liquid crystal indicator 200 is a liquid crystal indicator 100 design, its difference with liquid crystal indicator 100 is: it adopts the extraordinary ray polarization-type polaroid 143 of an ordinary light polarization-type polaroid 243 replacement liquid crystal indicators 100.This liquid crystal indicator 200 comprises an extraordinary ray polarization-type polaroid 241 and an ordinary light polarization-type polaroid 243, wherein, this extraordinary ray polarization-type polaroid 241 is arranged on infrabasal plate 210 inner surfaces, and this ordinary light polarization-type polaroid 243 is arranged on the outer surface of upper substrate 220.
Seeing also Fig. 8, is the synoptic diagram of the utility model liquid crystal indicator the 3rd embodiment.This liquid crystal indicator 300 is with the difference of liquid crystal indicator 100: it adopts an ordinary light polarization-type polaroid 343 to replace the extraordinary ray polarization-type polaroid 143 of liquid crystal indicator 100.This liquid crystal indicator 300 comprises an extraordinary ray polarization-type polaroid 341 and an ordinary light polarization-type polaroid 343, wherein, this extraordinary ray polarization-type polaroid 341 is arranged on upper substrate 320 inner surfaces, and this ordinary light polarization-type polaroid 343 is arranged on the outer surface of infrabasal plate 320.
Aforesaid liquid crystal indicator 100,200,300 only is to be example with penetration FFS type liquid crystal indicator, the utility model also is applicable to other type liquid crystal indicator, as FFS type liquid crystal indicator of twisted nematic liquid crystals display device, super-twist nematic liquid crystal indicator, IPS liquid crystal indicator and reflective or semi-penetration, semi-reflective etc.
Wherein, when liquid crystal indicator 100,200,300 was a semi-penetration, semi-reflective FFS type liquid crystal indicator, its public electrode 111 was made by transparent conductive material, and penetrable this public electrode of light enters liquid crystal layer; Its pixel electrode 113 adopts metallic aluminium or argent with reflecting properties to make, and it is with extraneous incident ray reflected back liquid crystal layer.The electrode of this semi-penetration, semi-reflective FFS type liquid crystal indicator also can be done following setting: its pixel electrode 113 is made by transparent conductive material; Its public electrode 111 comprises that a photo-emission part divides and a light transmission part, and this photo-emission part divides to be made by the metal material with reflecting properties, and this light transmission part is made by transparent conductive material.
When aforesaid liquid crystal indicator 100,200,300 is a reflective FFS type liquid crystal indicator, its electrode can have following configuration: its public electrode 111 or pixel electrode 113 are to be made by the metal material with reflecting properties, as adopt non-printing opacity argent or metallic aluminium; Perhaps, public electrode 111 and pixel electrode 113 are made by the metal material with reflecting properties; Perhaps, its public electrode 111 and pixel electrode 113 are made by transparent conductive material, and a reflecting plate is arranged on the function that realizes the reflection incident ray under public electrode 111 and the pixel electrode 113.
Liquid crystal indicator of the present utility model also has other change designs, as: the polaroid 241,243,341,343 in the liquid crystal indicator 200,300 also can adopt two extraordinary ray polarization-type polaroids entirely, wherein, one extraordinary ray polarization-type polaroid is arranged on the inner surface of corresponding substrate, and another extraordinary ray polarization-type polaroid then is arranged on the outer surface of corresponding substrate.The pixel electrode 113 of liquid crystal indicator 100,200,300 also can be herring-bone form or the design of other bending shape.
Claims (20)
1. liquid crystal indicator, it comprises first substrate, second substrate, a liquid crystal layer and two polaroids, this liquid crystal layer is between this first substrate and this second substrate, these two polaroids are located at respectively on this first and second substrate, it is characterized in that: at least one polaroid is arranged on the corresponding substrate inner surface.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: these two polaroids are extraordinary ray polarization-type polaroids.
3. liquid crystal indicator as claimed in claim 2 is characterized in that: these two polaroids all are arranged on the inner surface of corresponding substrate.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: these two polaroids comprise an extraordinary ray polarization-type polaroid and an ordinary light polarization-type polaroid.
5. liquid crystal indicator as claimed in claim 4 is characterized in that: this extraordinary ray polarization-type polaroid is arranged on the inner surface of corresponding substrate.
6. liquid crystal indicator as claimed in claim 1 is characterized in that: this liquid crystal indicator is a twisted nematic liquid crystals display device.
7. liquid crystal indicator as claimed in claim 1 is characterized in that: this liquid crystal indicator is a super-twist nematic liquid crystal indicator.
8. liquid crystal indicator as claimed in claim 1 is characterized in that: this liquid crystal indicator is a wide viewing angle liquid crystal display device.
9. liquid crystal indicator as claimed in claim 8 is characterized in that: this liquid crystal indicator is the wide viewing angle liquid crystal display device of rotary mode in the plane.
10. liquid crystal indicator as claimed in claim 8 is characterized in that: this liquid crystal indicator is the wide viewing angle liquid crystal display device of an edge electric field switching mode.
11. liquid crystal indicator as claimed in claim 10 is characterized in that: the wide viewing angle liquid crystal display device of this fringe field switching mode comprises a pixel electrode and a public electrode, this pixel electrode and and public electrode between can form an edge electric field.
12. liquid crystal indicator as claimed in claim 11 is characterized in that: this liquid crystal indicator is the liquid crystal indicator of a penetration fringe field switching mode.
13. liquid crystal indicator as claimed in claim 12 is characterized in that: this pixel electrode and public electrode are made by transparent conductive material.
14. liquid crystal indicator as claimed in claim 11 is characterized in that: this liquid crystal indicator is a semi-penetration, semi-reflective fringe field switch type lcd device.
15. liquid crystal indicator as claimed in claim 14 is characterized in that: this pixel electrode is made by the metal material with reflecting properties, and this public electrode is made by transparent conductive material.
16. liquid crystal indicator as claimed in claim 14, it is characterized in that: this public electrode comprises that a photo-emission part divides and a light transmission part, this photo-emission part divides to be made by the metal material with reflecting properties, and this light transmission part is made by transparent conductive material.
17. liquid crystal indicator as claimed in claim 11 is characterized in that: this liquid crystal indicator is a reflective fringe field switch type lcd device.
18. liquid crystal indicator as claimed in claim 17 is characterized in that: this public electrode or pixel electrode are made by the metal material with reflecting properties.
19. liquid crystal indicator as claimed in claim 17 is characterized in that: this public electrode and pixel electrode are made by the metal material with reflecting properties.
20. liquid crystal indicator as claimed in claim 17 is characterized in that: this public electrode and pixel electrode are made by transparent conductive material, and a reflecting plate is arranged under this public electrode and the pixel electrode so that incident ray is reflected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088470 CN2735386Y (en) | 2004-09-17 | 2004-09-17 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088470 CN2735386Y (en) | 2004-09-17 | 2004-09-17 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2735386Y true CN2735386Y (en) | 2005-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420088470 Expired - Lifetime CN2735386Y (en) | 2004-09-17 | 2004-09-17 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2735386Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439826A (en) * | 2013-07-22 | 2013-12-11 | 京东方科技集团股份有限公司 | Liquid crystal panel and manufacturing method thereof and liquid crystal display device |
| WO2016106901A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | Liquid crystal panel and liquid crystal display device |
-
2004
- 2004-09-17 CN CN 200420088470 patent/CN2735386Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439826A (en) * | 2013-07-22 | 2013-12-11 | 京东方科技集团股份有限公司 | Liquid crystal panel and manufacturing method thereof and liquid crystal display device |
| WO2015010388A1 (en) * | 2013-07-22 | 2015-01-29 | 京东方科技集团股份有限公司 | Liquid crystal panel and manufacturing method therefor, and liquid crystal display device |
| WO2016106901A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | Liquid crystal panel and liquid crystal display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140917 Granted publication date: 20051019 |