CN100376934C - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN100376934C CN100376934C CNB2004100153821A CN200410015382A CN100376934C CN 100376934 C CN100376934 C CN 100376934C CN B2004100153821 A CNB2004100153821 A CN B2004100153821A CN 200410015382 A CN200410015382 A CN 200410015382A CN 100376934 C CN100376934 C CN 100376934C
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal indicator
- substrate
- polaroid
- crystal layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The present invention provides a liquid crystal display device which comprises a first basal plate, a second basal plate, a liquid crystal layer, a plurality of pixel electrodes, a common electrode and two polarizing sheets, wherein the first basal plate and the second basal plate are oppositely arranged; the liquid crystal layer is arranged between the first basal plate and the second basal plate; the pixel electrodes are arranged between the liquid crystal layer and the first basal plate; the common electrode is arranged between the pixel electrodes and the first basal plate; the two polarizing sheets are respectively arranged on the first basal plate and the second basal plate; the pixel electrodes are reflection type electrodes; at least one polarizing sheet is arranged on the inner surface of a corresponding basal plate.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, particularly about a kind of fringe field switching mode (Fringe Field Switching, FFS) liquid crystal indicator.
[background technology]
Liquid crystal indicator because have low diathermaneity, characteristics such as volume is frivolous and power consumption is low, so day by day extensive on using, and along with the ripe and innovation of correlation technique, its kind is also various day by day.
Usually when the user watched liquid crystal indicator from different perspectives, the contrast of image can reduce along with the increase of viewing angle, the visual angle defective of Here it is liquid crystal indicator.For there is the narrow defective in visual angle in twisted nematic and the super-twist nematic liquid crystal indicator that overcomes early stage appearance, HIT (Hitachi) takes the lead in proposing a kind of plane inner switching type (In-Plane Switching Mode, wide viewing angle liquid crystal display device IPS).This kind plane inner switching type liquid crystal displaying apparatus 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, and the electric field that utilizes generation between public electrode and the pixel electrode to be parallel to substrate makes liquid crystal molecule rotate being parallel on the plane of substrate.This plane inner switching type liquid crystal displaying apparatus can significantly improve the visual angle of liquid crystal indicator, yet this plane inner switching type liquid crystal displaying apparatus can't make liquid crystal fully reverse because its electric field space distribution density is lower, thereby abundant printing opacity, in order to improve the electric field space distribution density, need to improve driving voltage, so power consumption increases.
In order to overcome plane inner switching type liquid crystal displaying apparatus driving voltage height, defective that power consumption is big, a kind of fringe field switch type lcd device appears, this fringe field switch type lcd device improves the electrode setting mode of plane inner switching type liquid crystal displaying apparatus, its public electrode and pixel electrode are separately positioned on the different layers of same substrate, the very little insulation course of alternating floor thickness between public electrode and pixel electrode, therefore Electric Field Distribution is more intensive, liquid crystal molecule fully reverses, therefore can reduce driving voltage, power consumption reduces.
Seeing also Fig. 1, is a kind of prior art penetration fringe field switching mode type liquid crystal indicator, and this liquid crystal indicator 1 comprises that two transparent lower substrate that are oppositely arranged 10 and upper substrate 20, a liquid crystal layer 30 are distributed between this infrabasal plate 10 and the upper substrate 20.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 the colored filter 25 and, and this colored filter 25 comprises a plurality of RGB that are provided with at interval by black matrix" (red, green, blue) dyed layer (figure does not show).The orthogonal polaroid 30,40 in a pair of polarization direction is attached to the outside surface of substrate 10,20 respectively.
The polaroid the 30, the 40th that this liquid crystal indicator 1 adopts, ordinary light polarization-type polaroid (Ordinary Type Polarizer), 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 polyvinyl alcohol (PVA) resistance to elevated temperatures is relatively poor, be no more than 80 ℃ usually, thereby this liquid crystal indicator 1 is not suitable for using polyvinyl alcohol (PVA) under the environment of higher temperature; And this polaroid the 30, the 40th, be attached to the outside surface of substrate 10,20, very easily by scratch, thereby make the application of liquid crystal indicator 1 be subjected to certain restriction.This two polaroid 30,40 adopts the outer set-up mode that pastes, the polarized light of gained needs can arrive another polaroid 40 through behind this colored filter 25 earlier 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 to causing certain destruction through the formed polarized light in polaroid 30 effect backs, thereby this polarized light can not pass through polaroid 40 well, thereby 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 defective that prior art fringe field switch type lcd device image display quality is not good and consume energy, the invention provides a kind of good display quality and energy-conservation fringe field switch type lcd device of guaranteeing.
Fringe field switch type lcd device provided by the invention, it comprises first substrate, second substrate, one liquid crystal layer, a plurality of pixel electrodes, one public electrode, one colored filter and two polaroids, first substrate and second substrate are oppositely arranged, this liquid crystal layer is arranged between this first substrate and this second substrate, this a plurality of pixel electrodes position is between this liquid crystal layer and this first substrate, this public electrode is between this pixel electrode and this first substrate, this two polaroid is separately positioned on this first substrate and second substrate, this colored filter is arranged between this second substrate and this liquid crystal layer, this pixel electrode is a reflective electrode, and at least one polaroid is arranged between this colored filter and this liquid crystal layer.
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, be difficult for by scratch, when polaroid is arranged on corresponding substrate inboard, can eliminate when adopting colored filter destruction to polarized light, improve polarisation efficient and light transmittance, thereby promote the image display quality of liquid crystal indicator.Because this pixel electrode is that reflective electrode is with ambient light reflected back liquid crystal layer, realize reflection function, this public electrode is made by transparent indium tin oxide or indium zinc oxide, and it is as a penetrating type electrode, the light that backlight arrangement sends penetrates this public electrode incident liquid crystal layer, realizes penetrating function.Because this liquid crystal indicator can effectively utilize ambient light by this reflective pixel electrode, power that therefore can corresponding reduction backlight arrangement reaches purpose of energy saving.
[description of drawings]
Fig. 1 is the diagrammatic cross-section 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 diagrammatic cross-section of liquid crystal indicator first embodiment of the present invention.
Fig. 3 is the contrast-response characteristic comparison diagram of the ordinary light polarization-type polaroid that adopts of the extraordinary ray polarization-type polaroid that adopts of the present invention and prior art in the different visual angles scope.
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 that adopts the liquid crystal indicator of two mutual quadrature extraordinary ray polarization-type polaroids.
Fig. 7 is the light leak characteristic synoptic diagram that adopts the liquid crystal indicator of two mutual quadrature ordinary light polarization-type polaroids.
[embodiment]
Fig. 2 is the diagrammatic cross-section of liquid crystal indicator first embodiment of the present invention.Liquid crystal indicator 100 of the present invention comprises that upper substrate 120, that an infrabasal plate 110, one and this infrabasal plate 110 are oppositely arranged is arranged on 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 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 liquid crystal layer 130 comprises a plurality of liquid crystal molecules, and 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 is arranged on the whole infrabasal plate 110, it adopts transparent conductive material to make, as tin indium oxide (Indium Tin Oxide, ITO) or indium zinc oxide (Indium ZincOxide, IZO) etc., penetrable this public electrode of light of sending of backlight arrangement (figure do not show) enters liquid crystal layer; This pixel electrode 113 is strip shaped electric poles that parallel interval is provided with, and it adopts metallic aluminium or argent with reflecting properties to make, and it is with extraneous incident ray reflected back liquid crystal layer.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 that the liquid crystal molecule of liquid crystal layer 130 is parallel to be rotated in the plane of infrabasal plate 110 and upper substrate 120.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.This two polaroid the 141, the 143rd adopts 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 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.
As shown in Figure 3, curve I is the contrast response curve figure of ordinary light polarization-type polaroid in the different visual angles scope, and curve II is the contrast response curve figure of the extraordinary ray polarization-type polaroid of liquid crystal indicator 100 employings of the present invention in the different visual angles scope.The ordinary light polarization-type polaroid that liquid crystal indicator 100 of the present invention adopts built-in extraordinary ray polarization-type polaroid 141,143 to replace traditional external labeling type has following advantage: when using extraordinary ray polarization-type polaroid, compare traditional ordinary light polarization-type polaroid, it all can obtain higher contrast in bigger angular field of view, thereby this liquid crystal indicator 100 can obtain bigger angular field of view and preferable contrast, thereby promotes the display quality of its image.
And, this two polaroid 141,143 is arranged between the liquid crystal layer and colored filter 127 of corresponding substrate 110,120 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.These built-in two polaroids, 141,143 thickness are frivolous, can make liquid crystal indicator 100 outward appearances more frivolous.
In addition, traditional general heat resisting temperature of ordinary light polarization-type polaroid only is 80 ℃, non-refractory; And adopt the outer mode that is attached to the liquid crystal display base board outside, easily by scratch; Extraordinary ray polarization-type polaroid 141,143 heat resisting temperatures that the present invention adopts are 200 ℃, and are more high temperature resistant; Employing is built in the set-up mode of corresponding substrate inboard, is difficult for being made the application of liquid crystal indicator 100 more wider by scratch; And, can directly two polaroids 141,143 be plated on corresponding substrate 110,120 inside surfaces in the processing procedure, can save tradition and adopt a large amount of artificial outer costs that paste polaroid.
Because this pixel electrode 113 is made by non-printing opacity argent or metallic aluminium, it can serve as a reflective electrode with ambient light reflected back liquid crystal layer 130, realize reflection function, this public electrode 111 is made by transparent indium tin oxide or indium zinc oxide, it is as a penetrating type electrode, the light that backlight arrangement sends penetrates this public electrode 111 and enters and penetrate liquid crystal layer 130, realizes penetrating function.This liquid crystal indicator 100 can effectively utilize ambient light by this reflective pixel electrode 113, and power that therefore can corresponding reduction backlight arrangement reaches purpose of energy saving.
Seeing also Fig. 4, is the synoptic diagram of liquid crystal indicator second embodiment of the present invention.The improvement design that this liquid crystal indicator 200 is liquid crystal indicators 100.This liquid crystal indicator 200 is with the difference of liquid crystal indicator 100: it adopts an ordinary light polarization-type polaroid 243 to replace the extraordinary ray polarization-type polaroid 143 of liquid crystal indicator 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. 5, is the synoptic diagram of liquid crystal indicator the 3rd embodiment of the present invention.This liquid crystal indicator 300 also comprises an extraordinary ray polarization-type polaroid 341 and an ordinary light polarization-type polaroid 343.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 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 310.
See also Fig. 6 and Fig. 7, Fig. 6 shows the light leak characteristic synoptic diagram of the liquid crystal indicator that adopts two mutual quadrature extraordinary ray polarization-type polaroids; Fig. 7 shows the light leak characteristic synoptic diagram of the liquid crystal indicator that adopts two mutual quadrature ordinary light polarization-type polaroids.Because the mutually orthogonal extraordinary ray polarization-type polaroid of liquid crystal indicator and the optical axis of ordinary light polarization-type polaroid are parallel to each other, light leak to any angle incident light wave just can be complementary, thereby liquid crystal indicator of the present invention 200,300 respectively in collocation used an extraordinary ray polarization-type polaroid 241,341 and an ordinary light polarization-type polaroid at 243,343 o'clock, can significantly reduce the wide-angle light leak of liquid crystal indicator.
Certainly, the pixel electrode of liquid crystal indicator of the present invention can be made up of an electrode layer and a reflectance coating, and this reflectance coating covers on this electrode layer.When this liquid crystal indicator was realized showing, the intensive fringe field of the common generation of this pixel electrode and public electrode deflected the liquid crystal molecule in this liquid crystal layer, and reflectance coating is realized reflection function with ambient light reflected back liquid crystal layer.
Claims (9)
1. liquid crystal indicator, it comprises first substrate, second substrate, one liquid crystal layer, one colored filter, a plurality of pixel electrodes, one public electrode and two polaroids, first substrate and second substrate are oppositely arranged, this liquid crystal layer is arranged between this first substrate and this second substrate, this a plurality of pixel electrodes position is between this liquid crystal layer and this first substrate, this public electrode is between this pixel electrode and this first substrate, this colored filter is arranged between this second substrate and this liquid crystal layer, this two polaroid is separately positioned on this first substrate and second substrate, it is characterized in that: this pixel electrode is a reflective electrode, and at least one polaroid is arranged between this colored filter and this liquid crystal layer.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: at least one polaroid is an extraordinary ray polarization-type polaroid.
3. liquid crystal indicator as claimed in claim 2 is characterized in that: this extraordinary ray polarization-type polaroid is arranged between this colored filter and this liquid crystal layer.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: this pixel electrode material is an argent.
5. liquid crystal indicator as claimed in claim 1 is characterized in that: this pixel electrode material is a metallic aluminium.
6. liquid crystal indicator as claimed in claim 1 is characterized in that: this pixel electrode comprises an electrode layer and a reflectance coating, and this reflectance coating covers on this electrode layer.
7. liquid crystal indicator as claimed in claim 1 is characterized in that: be provided with insulation course between this public electrode and the pixel electrode.
8. liquid crystal indicator as claimed in claim 1 is characterized in that: this liquid crystal layer and be arranged between the polaroid between this colored filter and liquid crystal layer and be provided with an alignment film.
9. liquid crystal indicator as claimed in claim 1 is characterized in that: be provided with an alignment film between this liquid crystal layer and the pixel electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153821A CN100376934C (en) | 2004-02-14 | 2004-02-14 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153821A CN100376934C (en) | 2004-02-14 | 2004-02-14 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1655021A CN1655021A (en) | 2005-08-17 |
| CN100376934C true CN100376934C (en) | 2008-03-26 |
Family
ID=34892169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100153821A Expired - Fee Related CN100376934C (en) | 2004-02-14 | 2004-02-14 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376934C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654695A (en) * | 2012-03-23 | 2012-09-05 | 京东方科技集团股份有限公司 | Array substrate and display device applying same |
| CN104503165B (en) | 2014-12-30 | 2017-05-24 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN104617114B (en) * | 2015-02-15 | 2018-02-13 | 京东方科技集团股份有限公司 | A kind of array base palte and preparation method thereof and display device |
| CN107924097A (en) * | 2015-05-29 | 2018-04-17 | 夏普株式会社 | Liquid crystal display device |
| CN105093665A (en) | 2015-09-22 | 2015-11-25 | 京东方科技集团股份有限公司 | Semi-transmitting and semi-reflecting display panel and semi-transmitting and semi-reflecting display device |
| CN106526958A (en) * | 2017-01-20 | 2017-03-22 | 深圳市华星光电技术有限公司 | Display panel and liquid crystal display equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010005238A1 (en) * | 1999-12-24 | 2001-06-28 | Yun Suk Shin | Method for manufacturing fringe field switching mode liquid crystal display device |
| WO2003010594A1 (en) * | 2001-07-26 | 2003-02-06 | Optiva, Inc. | Liquid crystal display and the method of its fabrication |
| US20030202140A1 (en) * | 2002-04-24 | 2003-10-30 | Hong-Da Liu | Scattering fringe field optical-compensated reflective and transflective liquid crystal display |
| CN2699329Y (en) * | 2004-02-14 | 2005-05-11 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display |
-
2004
- 2004-02-14 CN CNB2004100153821A patent/CN100376934C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010005238A1 (en) * | 1999-12-24 | 2001-06-28 | Yun Suk Shin | Method for manufacturing fringe field switching mode liquid crystal display device |
| WO2003010594A1 (en) * | 2001-07-26 | 2003-02-06 | Optiva, Inc. | Liquid crystal display and the method of its fabrication |
| US20030202140A1 (en) * | 2002-04-24 | 2003-10-30 | Hong-Da Liu | Scattering fringe field optical-compensated reflective and transflective liquid crystal display |
| CN2699329Y (en) * | 2004-02-14 | 2005-05-11 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1655021A (en) | 2005-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102981327B (en) | Display device | |
| CN110412792B (en) | Display panel with switchable transmission and mirror surfaces and vehicle rearview mirror | |
| JP2013541051A (en) | Smectic liquid crystal color display | |
| CN100376934C (en) | Liquid crystal display device | |
| CN101644845B (en) | Full-color reflection type smectic liquid crystal display device with high contrast | |
| CN102819154B (en) | Liquid crystal panel and display device | |
| CN2699329Y (en) | Liquid crystal display | |
| CN2800327Y (en) | Liquid crystal display device | |
| TWI321697B (en) | Liquid crystal display device | |
| CN104020616B (en) | Transmitting/reflecting LCD and driving method thereof | |
| CN1641438A (en) | Liquid crystal display device | |
| CN1704811A (en) | Liquid crystal display device | |
| CN2689279Y (en) | Liquid-crystal displaying devices | |
| CN2735386Y (en) | Liquid crystal display device | |
| CN1627146A (en) | Edge electric field switch type liquid crystal display unit | |
| US20180052360A1 (en) | Liquid crystal display panel | |
| CN1641437A (en) | Liquid crystal display device | |
| CN100426075C (en) | Liquid crystal display device | |
| CN2800318Y (en) | Liquid crystal display device | |
| TWI312887B (en) | Liquid crystal display device | |
| CN2735385Y (en) | Liquid crystal display device | |
| JP2000171831A (en) | Liquid crystal display panel | |
| CN2689278Y (en) | Liquid-crystal displaying devices | |
| CN2696004Y (en) | Plane internal rotation mode liquid crystal display device | |
| TW200521584A (en) | Liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20180214 |