CN1704811A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN1704811A CN1704811A CN 200410027432 CN200410027432A CN1704811A CN 1704811 A CN1704811 A CN 1704811A CN 200410027432 CN200410027432 CN 200410027432 CN 200410027432 A CN200410027432 A CN 200410027432A CN 1704811 A CN1704811 A CN 1704811A
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- liquid crystal
- polaroid
- crystal indicator
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Abstract
A LCD device includes a first base plate, a second base plate, a LC layer, two diffusers, multiple pixel electrodes, a public electrode, a film transistor array and a color optical filter, among which, said LC layer is placed between the two base plate, said film transistor array, the color optical filter and the pixel electrodes are set on the first base plate, said two diffusers are set on the first and second base plates separately characterizing that at least one is set in the inside surface of the related plate and the diffuser is on extraordinary optical polarized one.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, the liquid crystal indicator of particularly a kind of COA (Color FilterOn Array is made in colored filter on the thin-film transistor array base-plate) type.
[background technology]
Liquid crystal indicator is because have characteristics such as low diathermaneity, thin thickness and power consumption be low, thus day by day extensive in the use, and also along with the ripe of correlation technique with innovate, its kind is also various day by day.Traditional thin-film transistor LCD device has problems such as the little and panel applying difficulty of aperture opening ratio usually.In order to overcome the little and low defective of light utilization efficiency of traditional liquid crystal indicator aperture opening ratio, Seiko instrument and electronics corporation propose a kind of liquid crystal indicator of COA technology, the difference of itself and traditional liquid crystal indicator is: its colored filter is arranged on the thin-film transistor array base-plate, another substrate is then for containing tin indium oxide (Indium TinOxide merely, ITO) transparency carrier, thereby improve aperture opening ratio and brightness, also promoted the yield that panel is fitted.
Please refer to Fig. 1, is a kind of structural representation of prior art COA process technique liquid crystal indicator.This liquid crystal indicator 1 comprises first substrate 10, second substrate 20 and liquid crystal layer 30, and this liquid crystal layer 30 is distributed between relative first substrate 10 and second substrate 20.These first substrate, 10 inside surfaces are provided with a thin film transistor (TFT) array 11, a plurality of pixel electrode 13 and a colored filter 15, wherein this colored filter 15 is arranged on this thin film transistor (TFT) array 11, a plurality of pixel electrodes 13 are set on it, and these second substrate, 20 inside surfaces are provided with a public electrode 22.First substrate 10 and second substrate, 20 outside surfaces attach the mutually perpendicular polaroid 42,44 in polarization direction respectively.
The polaroid the 42, the 44th that this liquid crystal indicator 1 adopts, ordinary light polarization-type polaroid (Ordinary Type Polarizer), the polarized light property of this 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 42,44 is that polyvinyl alcohol (PVA) (Polyvinyl Alcohol PVA), because the polyvinyl alcohol (PVA) resistance to elevated temperatures is relatively poor, be no more than 80 ℃ usually, thereby should not use under the environment of higher temperature by display device; And this polaroid the 42, the 44th is attached to the outside surface of transparency carrier 10,20, very easily by scratch, thereby influences the image display quality.In the reality, the two ordinary light polarization-type polaroids that use is orthogonally set 42,44 o'clock, the contrast of image can sharply reduce along with the increase of viewing angle, thereby produces angle limitations; And, the two ordinary light polarization-type polaroids that use is orthogonally set 42,44 o'clock, this liquid crystal indicator 1 influences the image display quality 0 ° of angle, 90 °, 180 °, 270 ° and near zone light leak thereof comparatively serious (please refer to the light areas of Fig. 2).This two polaroid 42,44 adopts the outer set-up mode that pastes, polarized light through polaroid 42 effect back gained needs can arrive another polaroid 44 through behind this colored filter 15 earlier, 15 pairs of polarized lights that pass wherein of colored filter produce certain scattering process, thereby to damaging through the formed polarized light in polaroid 42 effect backs, reduce the polarisation efficient and the light transmittance of liquid crystal indicator 1, influence its image display quality.
[summary of the invention]
In order to overcome the not good defective of liquid crystal indicator image display quality of prior art, the invention provides the high liquid crystal indicator of a kind of image display quality.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of liquid crystal indicator is provided, it comprises one first substrate, one second substrate, a liquid crystal layer, two polaroids, a plurality of pixel electrode, a public electrode, a thin film transistor (TFT) array and a colored filter, this liquid crystal layer is clipped between this first substrate and this second substrate, and this thin film transistor (TFT) array, colored filter and pixel electrode are successively set on first substrate; This two polaroid is separately positioned on this first substrate and second substrate, and at least one polaroid is arranged on the inner surface of corresponding substrate, and it is an extraordinary ray polarization-type polaroid.
Compared with prior art, liquid crystal indicator of the present invention has following advantage: polaroid adopts the set-up mode that is built in corresponding substrate inboard, is difficult for by scratch, thereby makes the image display quality preferable.Polaroid adopts extraordinary ray polarization-type polaroid, the chemically-resistant solvent, and also heat resisting temperature reaches 200 ℃, and improve the angular field of view of liquid crystal indicator, effectively improve its image display quality.Adopt the optical axis of a built-in extraordinary ray polarization-type polaroid and an ordinary light polarization-type polaroid parallel to each other, light leak to incident light wave be able to be complementary, the light leakage phenomena of liquid crystal indicator in scope with great visual angle can be effectively compensated, the image display quality of liquid crystal indicator can be further promoted.
[description of drawings]
Fig. 1 is the synoptic diagram of prior art liquid crystal indicator, and wherein two polaroids are outer being attached on the outer surface of corresponding substrate.
Fig. 2 is the light leak characteristic synoptic diagram of prior art liquid crystal indicator.
Fig. 3 is the diagrammatic cross-section of liquid crystal indicator first embodiment of the present invention.
Fig. 4 is the diagrammatic cross-section of liquid crystal indicator second embodiment of the present invention.
Fig. 5 is the diagrammatic cross-section of liquid crystal indicator the 3rd embodiment of the present invention.
Fig. 6 is the light leak characteristic synoptic diagram of the liquid crystal indicator that adopts of the present invention.
[embodiment]
Please refer to Fig. 3, it is the structural representation of liquid crystal indicator first embodiment of the present invention, this liquid crystal indicator 100 comprises that second substrate 120, that first substrate 110, one and this first substrate 110 are oppositely arranged is clipped in the liquid crystal layer 130 of 110,120 of this two substrates.
Set gradually thin film transistor (TFT) array 111, a colored filter 112, a plurality of pixel electrode 114, first polaroid 142 and first both alignment layers 116 on these first substrate, 110 inner surfaces.Be sequentially provided with a public electrode 124, second polaroid 144 and second both alignment layers 126 on these second substrate, 120 inner surfaces.
This pixel electrode 114 and public electrode 124 adopts transparent conductive materials to make, as tin indium oxide or indium zinc oxide (Indium Zinc Oxide, IZO) etc., respectively attached on this first substrate 110 and second substrate 120.
This colored filter 112 is attached on this thin film transistor (TFT) array 111, and this pixel electrode 114, first polaroid 142 and first both alignment layers 116 are successively attached on this colored filter 112.When 110,120 pairs of first, second substrates do not need meticulous action on time.
This first polaroid 142 and the 144 quadrature settings of second polaroid, both polarization axles are to vertical mutually.This two polaroid 142,144 is extraordinary ray polarization-type polaroid (Extraordinary Type Polarizer), it is made by the organic dyestuff with liquid crystal phase (Liquid-crystallinePhase), its polarized light property is: the incident light of extraordinary polarization state can pass this polaroid 142,144, and the incident light of ordinary polarization state passes this polaroid and will be absorbed in 142,144 o'clock.The thickness of this two polaroid 142,144 is generally less than 100 microns, and thinner thickness is not so it when being separately positioned on corresponding substrate 110,120 inner surfaces, can cause harmful effect to the operating voltage of liquid crystal indicator 100.
This first polaroid 142 is arranged between the liquid crystal layer 130 and colored filter 112 of corresponding substrate 110 inboards, can eliminate destruction and the scattering of colored filter to polarized light, improve polarisation efficient and light transmittance, thereby can further promote the image display quality of liquid crystal indicator 100; And this employing is built in the set-up mode of corresponding substrate inboard, and this two polaroid 142,144 is difficult for by scratch.In addition, traditional general heat resisting temperature of ordinary light polarization-type polaroid only is 80 ℃, non-refractory, and extraordinary ray polarization-type polaroid 142,144 heat resisting temperatures that the present invention adopts are 200 ℃, more high temperature resistant chemically-resistant solvent; And extraordinary ray polarization-type polaroid 142,144 thinner thicknesses own make this liquid crystal indicator 100 more frivolous.Can directly two polaroids 142,144 be plated on the corresponding substrate 110,120 in the processing procedure of this liquid crystal indicator, can save tradition and adopt a large amount of artificial outer costs that paste polaroid.
Please refer to Fig. 4, is the structural representation of liquid crystal indicator second embodiment of the present invention.The improvement design that this liquid crystal indicator 200 is a liquid crystal indicator 100, it can further improve the image display quality of liquid crystal indicator 100.This liquid crystal indicator 200 is with the difference of liquid crystal indicator 100: it adopts an ordinary light polarization-type polaroid 244 to replace the extraordinary ray polarization-type polaroid 144 of liquid crystal indicator 100.This liquid crystal indicator 200 comprises an extraordinary ray polarization-type polaroid 242 and an ordinary light polarization-type polaroid 244, wherein, this extraordinary ray polarization-type polaroid 242 is arranged on first substrate, 210 inner surfaces, and this ordinary light polarization-type polaroid 244 is arranged on the outer surface of second substrate 220.
Please refer to Fig. 5, is the structural representation of liquid crystal indicator the 3rd embodiment of the present invention.This liquid crystal indicator 300 also comprises an ordinary light polarization-type polaroid 342 and an extraordinary ray polarization-type polaroid 344.This liquid crystal indicator 300 is with the difference of liquid crystal indicator 100: it adopts an ordinary light polarization-type polaroid 342 to replace the extraordinary ray polarization-type polaroid 142 of liquid crystal indicator 100.Wherein, this extraordinary ray polarization-type polaroid 344 is arranged on second substrate, 320 inner surfaces, and this ordinary light polarization-type polaroid 342 is arranged on side surface outside first substrate 310.
Please together consult Fig. 2 and Fig. 6, Fig. 6 is the light leak characteristic synoptic diagram that the present invention adopts the extraordinary ray polarization-type polaroid liquid crystal indicator of two mutual quadratures, adopt the light leak characteristic schematic images of two mutual quadrature ordinary light polarization-type polaroids to contrast with second figure, adopt the optical axis of mutually orthogonal extraordinary ray polarization-type polaroid and ordinary light polarization-type polaroid parallel to each other as can be known, extraordinary ray polarization-type polaroid can be complementary to the light leak of any angle incident light wave with combining of ordinary light polarization-type polaroid, thereby arrange in pairs or groups when using an extraordinary ray polarization-type polaroid and an ordinary light polarization-type polaroid in the liquid crystal indicator of the present invention, can significantly be reduced in the interior light leak amplitude of scope with great visual angle, further improve the image display quality of liquid crystal indicator.
But, liquid crystal indicator of the present invention is not limited to first embodiment, second embodiment and the 3rd embodiment, wherein, polaroid 242,244,342,344 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.
In addition, the polarization type liquid crystal indicator can be used in various mode LCDs in the present invention, as stable twisted nematic, vertical orientation type, multi-domain perpendicular alignment-type, plane inner switching type and multiple domain twisted nematic escope etc., and be applicable to the LCD assembly of penetration, reflection-type and semi penetration type.
Claims (6)
1. liquid crystal indicator, comprise one first substrate, one second substrate, one liquid crystal layer, two polaroids, a plurality of pixel electrodes, one public electrode, one thin film transistor (TFT) array and a colored filter, this liquid crystal layer is clipped between this first substrate and this second substrate, this thin film transistor (TFT) array, colored filter and pixel electrode are successively set on first substrate, this two polaroid is separately positioned on this first substrate and second substrate, it is characterized in that: at least one polaroid is arranged on the inner surface of corresponding substrate, and is extraordinary ray polarization-type polaroid.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: this extraordinary ray polarization-type polaroid material is an organic dyestuff.
3. liquid crystal indicator as claimed in claim 1 is characterized in that: this extraordinary ray polarization-type polaroid thickness is less than 100 microns.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: this two built-in polaroid optical axis is orthogonally set.
5. liquid crystal indicator as claimed in claim 1 is characterized in that: this two polaroid comprises an extraordinary ray polarization-type polaroid and an ordinary light polarization-type polaroid.
6. liquid crystal indicator as claimed in claim 5 is characterized in that: this ordinary light polarization-type polaroid is arranged on the outer surface of corresponding substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027432 CN1704811A (en) | 2004-05-28 | 2004-05-28 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027432 CN1704811A (en) | 2004-05-28 | 2004-05-28 | Liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN1704811A true CN1704811A (en) | 2005-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410027432 Pending CN1704811A (en) | 2004-05-28 | 2004-05-28 | Liquid crystal display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100476552C (en) * | 2006-01-27 | 2009-04-08 | 统宝光电股份有限公司 | Matrix substrate, liquid crystal display panel and electronic apparatus |
| CN103064210A (en) * | 2011-10-21 | 2013-04-24 | 比亚迪股份有限公司 | Liquid crystal display ( LCD) and prepared method of LCD |
| CN103226258A (en) * | 2013-03-25 | 2013-07-31 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method thereof |
| WO2015062123A1 (en) * | 2013-10-30 | 2015-05-07 | 深圳市华星光电技术有限公司 | Liquid crystal assembly and manufacturing method therefor, and liquid crystal display device |
| CN106353917A (en) * | 2016-11-28 | 2017-01-25 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN112068359A (en) * | 2020-09-03 | 2020-12-11 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel and preparation method thereof |
-
2004
- 2004-05-28 CN CN 200410027432 patent/CN1704811A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100476552C (en) * | 2006-01-27 | 2009-04-08 | 统宝光电股份有限公司 | Matrix substrate, liquid crystal display panel and electronic apparatus |
| US7554644B2 (en) | 2006-01-27 | 2009-06-30 | Tpo Displays Corp. | LCD panel having capacitor disposed over or below photo spacer with active device also disposed between the photo spacer and a substrate, all disposed over opaque region of display |
| CN103064210A (en) * | 2011-10-21 | 2013-04-24 | 比亚迪股份有限公司 | Liquid crystal display ( LCD) and prepared method of LCD |
| CN103226258A (en) * | 2013-03-25 | 2013-07-31 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method thereof |
| WO2014153891A1 (en) * | 2013-03-25 | 2014-10-02 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method therefor |
| CN103226258B (en) * | 2013-03-25 | 2015-12-02 | 京东方科技集团股份有限公司 | Display panels and manufacture method thereof |
| WO2015062123A1 (en) * | 2013-10-30 | 2015-05-07 | 深圳市华星光电技术有限公司 | Liquid crystal assembly and manufacturing method therefor, and liquid crystal display device |
| CN106353917A (en) * | 2016-11-28 | 2017-01-25 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN106353917B (en) * | 2016-11-28 | 2019-02-19 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN112068359A (en) * | 2020-09-03 | 2020-12-11 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel and preparation method thereof |
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