CN1683956A - Reflective plane internal switching liquid crystal display device - Google Patents
Reflective plane internal switching liquid crystal display device Download PDFInfo
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- CN1683956A CN1683956A CN 200410026920 CN200410026920A CN1683956A CN 1683956 A CN1683956 A CN 1683956A CN 200410026920 CN200410026920 CN 200410026920 CN 200410026920 A CN200410026920 A CN 200410026920A CN 1683956 A CN1683956 A CN 1683956A
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- reflective plane
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Abstract
The reflective inside-plane switching LCD device includes transparent upper substrate, opposite lower substrate, liquid crystal layer between the upper substrate and lower substrate, several grid lines and data lines, pixel electrodes and common electrodes formed on the upper or lower substrate, and reflecting layer on one side of the lower substrate. The liquid crystal layer, the grid lines and the data lines constitute pixel units in array; the common electrodes and the pixel electrodes are bent and corresponding to the pixel units and are arranged alternately.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, particularly a kind of plane inner switching type (In-Plane Switching, IPS) liquid crystal indicator.
[background technology]
Liquid crystal indicator is according to its lighting system, can be divided into transmission-type, half-transmission half-reflection type and reflective three kinds.Reflective LCD device is only to utilize ambient light such as daylight, and does not use the liquid crystal indicator of back light system illumination, so it has significant advantage on aspects such as weight, volume and power consumption.For realizing wide viewing angle, liquid crystal indicator can adopt modes such as increasing view film or use plane inner switching type structure.
Please refer to Fig. 1 and Fig. 2, is No. the 6th, 577,368, the United States Patent (USP) of on June 10th, 2003 bulletin, and this United States Patent (USP) discloses a kind of reflective plane inner switching type liquid crystal displaying apparatus.This liquid crystal indicator comprises substrate 80, one grid 11, one source pole 71, one drain electrode 72, one pixel electrode 75, one public electrode 20 and alignment film 4 once, wherein, this time substrate 80 is provided with many gate lines 10 and data line 70, these many gate lines 10 and data line 70 provide scanning signal and data signals respectively, this grid 11, this source electrode 71 and the 72 formation thin film transistor (TFT)s that should drain, this pixel electrode 75 and this public electrode 20 are used for producing and drive the required electric field of liquid crystal, and this time alignment film 4 makes liquid crystal molecule form orientation.
This pixel electrode 75 and public electrode 20 are pectination, when voltage puts on pixel electrode 75 and public electrode 20, produce one between two electrodes and are parallel to the electric field of this substrate 80, change thereby reach in-plane.This pixel electrode 75 uses the material of high reflectance to make with public electrode 20, with reflection ray.
But, pixel electrode 75 of the prior art is the vertical bar shapeds that are parallel to each other with public electrode 20, and the electric field of its generation has single direction, and the deflection of liquid crystal molecule is also only rotated towards this direction of an electric field, on different visual angles, observe to produce gamut, thereby influence display effect.
[summary of the invention]
For overcoming the relatively poor problem of the reflective plane inner switching type liquid crystal displaying apparatus wide-angle of prior art display effect, the invention provides the preferable reflective plane inner switching type liquid crystal displaying apparatus of a kind of wide-angle display effect.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of reflective plane inner switching type liquid crystal displaying apparatus is provided, it comprises a transparent upward substrate, one with should go up the following substrate that substrate is oppositely arranged, liquid crystal layer between last substrate and following substrate, many gate lines and data line, be formed at substrate or following suprabasil pixel electrode and public electrode, one is positioned at the reflection horizon of substrate one side down, this liquid crystal layer wherein, many gate lines and data line constitute the pixel cell that array is arranged, this public electrode is corresponding with this pixel electrode and each pixel cell and have bending or bending shape, and this public electrode and this pixel electrode are staggered.
Compared with prior art, the advantage of reflective plane inner switching type liquid crystal displaying apparatus of the present invention is: its public electrode and pixel electrode are bending or bending shape, therefore can produce the multiple domain electric field, impel liquid crystal molecule to different direction deflection, on different visual angles, observe the gamut that it produced and cancel out each other, thereby obtain better display effect.
[description of drawings]
Fig. 1 is the floor map of prior art reflective LCD device.
Fig. 2 is the diagrammatic cross-section of Fig. 1 along the II-II direction.
Fig. 3 is the sectional view of reflective plane inner switching type liquid crystal displaying apparatus first embodiment of the present invention.
Fig. 4 is the floor map of reflective plane inner switching type liquid crystal displaying apparatus first embodiment of the present invention.
Fig. 5 is the diagrammatic cross-section of reflective plane inner switching type liquid crystal displaying apparatus second embodiment of the present invention.
Fig. 6 is the floor map of reflective plane inner switching type liquid crystal displaying apparatus second embodiment of the present invention.
Fig. 7 is the diagrammatic cross-section of reflective plane inner switching type liquid crystal displaying apparatus the 3rd embodiment of the present invention.
Fig. 8 is the floor map of reflective plane inner switching type liquid crystal displaying apparatus the 3rd embodiment of the present invention.
Fig. 9 is the synoptic diagram in reflection horizon among Fig. 7.
[embodiment]
Seeing also Fig. 3, is the sectional view of reflective plane inner switching type liquid crystal displaying apparatus first embodiment of the present invention.This reflective plane inner switching type liquid crystal displaying apparatus comprises that one transparently goes up substrate 100, one and last the substrate 100 following substrate 200, the liquid crystal layer 300 between last substrate 100 and following substrate 200 that are oppositely arranged.For last substrate 100, polaroid 160, its inboard are provided with alignment film 130 on a colored filter 140 and in regular turn on its arranged outside one.For substrate 200 down, one reflection horizon, 250, one pixel electrodes 210 are set in its inboard and a public electrode 220 is positioned on this reflection horizon 250, once alignment film 230 is positioned on reflection horizon 250, pixel electrode 210 and the public electrode 220.
Seeing also Fig. 4, is the floor map of reflective plane inner switching type liquid crystal displaying apparatus first embodiment of the present invention.This liquid crystal indicator further comprises many gate lines 170 and data line 180, this gate line 170 and this data line 180 constitute a plurality of pixel regions, in each pixel region, pixel electrode 210 has identical broken line shape with public electrode 220, and this pixel electrode 210 is staggered with this public electrode 220.When voltage put on pixel electrode 210 and the public electrode 220, the Electric Field Distribution that forms between two electrodes was on both direction, and promptly electric field is two territory electric fields.
Because electric field has both direction, so the deflection of liquid crystal molecule also has both direction, therefore the gamut that is produced is in different directions cancelled out each other, thereby obtains better display effect.
Seeing also Fig. 5, is the diagrammatic cross-section of reflective plane inner switching type liquid crystal displaying apparatus second embodiment of the present invention.This reflective plane inner switching type liquid crystal displaying apparatus comprises following substrate 201 and the liquid crystal layer 301 between last substrate 101 and following substrate 201 that a transparent upward substrate 101, one and last substrate 101 are oppositely arranged.Should go up polaroid 161 on the arranged outside one of substrate 101, its inboard is provided with that alignment film 131 is positioned on substrate 101 on this, this pixel electrode 111 and this public electrode 121 on a pixel electrode 111 and the public electrode 121.The inboard of this time substrate 201 is provided with a reflection horizon 251, a colored filter 241 and alignment film 231 once in regular turn.
Compare with first embodiment, the pixel electrode 111 of second embodiment and public electrode 121 are arranged in the substrate 101, and colored filter 241 then is arranged at down in the substrate 201.
Seeing also Fig. 6, is the floor map of reflective plane inner switching type liquid crystal displaying apparatus second embodiment of the present invention.This liquid crystal indicator further comprises many gate lines 171 and data line 181, this gate line 171 and data line 181 constitute a plurality of pixel regions, in each pixel region, pixel electrode 111 has identical wave-like with public electrode 121, and pixel electrode 111 and public electrode 121 are staggered.
Because pixel electrode 111 and public electrode 121 are wave-likes, the broken line shape electrode that adopts with first embodiment compares, it does not have sharp-pointed kink, and replaces level and smooth curve, therefore can avoid the swing offset (Disclination) that is caused by sharp-pointed kink.
Because electric field results between pixel electrode 111 and the public electrode 121, therefore in each pixel cell, effectively the viewing area only is the zone at pixel electrode 111 and public electrode 121 places, and should the zone and data line 181 between the space be invalid viewing area.In first embodiment and second embodiment, the shape of its data line is different with the shape of pixel electrode and public electrode, therefore the zone and the space between the data line 181 at pixel electrode 111 and public electrode 121 places are bigger, and promptly invalid viewing area is bigger.
Seeing also Fig. 7, is the diagrammatic cross-section of reflective plane inner switching type liquid crystal displaying apparatus the 3rd embodiment of the present invention.The reflective plane inner switching type liquid crystal displaying apparatus of the present invention comprises that one transparently goes up substrate 102, one and last the substrate 102 transparent time substrate 202, the liquid crystal layer 302 between last substrate 102 and following substrate 202 that are oppositely arranged.Be somebody's turn to do polaroid 162 on the arranged outside one that goes up substrate 102, its inboard is provided with alignment film 132 on a colored filter 142 and in regular turn.The inboard of this time substrate 202 is provided with a pixel electrode 212 and a public electrode 222, once alignment film 232 is positioned on this time substrate 202, this pixel electrode 212 and this public electrode 222, and the outside of this time substrate 202 is provided with a polaroid 262 and a reflection horizon 252 in regular turn.
With first embodiment relatively, the 3rd embodiment uses two polaroids 162 and 262, and its reflection horizon 252 is positioned at the outside of substrate 202 down, and this time substrate 202 also to be transparent material make, so can realize the transmission of light.
Seeing also Fig. 8, is the floor map of reflective plane inner switching type liquid crystal displaying apparatus the 3rd embodiment of the present invention.This liquid crystal indicator further comprises many gate lines 172 and data line 182, this gate line 172 and data line 182 constitute a plurality of pixel regions, in each pixel region, pixel electrode 212 has identical multiple wave-like with public electrode 222, and pixel electrode 212 and public electrode 222 are staggered.Gate line 172 and data line 182 also have the multiple wave-like similar to pixel electrode 212 and public electrode 222.
Because the 3rd embodiment adopts the data line 182 similar with public electrode 222 shapes to pixel electrode 212, therefore in each pixel cell, invalid viewing area is less.
Seeing also Fig. 9, is the synoptic diagram in reflection horizon in reflective plane inner switching type liquid crystal displaying apparatus the 3rd embodiment of the present invention.This reflection horizon 252 is formed by the polystyrene film of antiradar reflectivity and the overlapping setting of tellurium film of high reflectance, and these two kinds of materials are dielectric material, therefore can not cause interference to the electric field that is formed between pixel electrode 212 and the public electrode 222.This reflection horizon 252 has micro-protuberance 2521, and this micro-protuberance 2521 can be avoided producing direct reflection in reflection horizon 252, and this reflection horizon 252 can be by earlier being provided with particulate (indicating) in the substrate 202 down, reflection horizon 252 is set again and forms.
The pixel electrode of the reflective plane inner switching type liquid crystal displaying apparatus of the present invention and public electrode can have similar shapes, as be broken line or waveform, also can have different shapes, as one is broken line shape, another is a waveform, and the different settings of this pixel electrode and public electrode shape can not influence the acquisition of multiple domain effect.
In addition, the polaroid of the reflective plane inner switching type liquid crystal displaying apparatus of the present invention can adopt E-type polaroid, this kind polaroid is different with existing O-type polaroid, it can transmission extraordinary ray (Extraordinary Wave), and existing O-type polaroid can only transmission ordinary light (Ordinary Wave), on the optical appearance of transmission, both have tangible difference.Existing its light leak of O-type polaroid increases rapidly with the increase of incident angle, and its light leak is only in vertical incidence, i.e. less during 0 degree incident, and its light leak is stronger when incident angle is big; But E-type polaroid then is a light leak minimum when incident angle about 45 is spent, and lower light leak is only arranged when spending less than 45, so it shows more excellent when having bigger incident angle.When adopting E-type polaroid and O-type polaroid simultaneously, its light leak is then average and smaller in bigger ranges of incidence angles, and therefore this combination has raising to the wide viewing angle characteristic of liquid crystal indicator.
The public electrode of the reflective plane inner switching type liquid crystal displaying apparatus of the present invention and pixel electrode can adopt transparent conductive material to make, to improve the utilization factor of light.
Claims (16)
1. reflective plane inner switching type liquid crystal displaying apparatus, comprise a transparent upward substrate, one with should go up the following substrate that substrate is oppositely arranged, liquid crystal layer between last substrate and following substrate, many gate lines and data line, a plurality of pixel electrodes, a plurality of public electrodes and one are positioned at the reflection horizon of substrate one side down, the pixel cell that these many gate lines and data line forming array are arranged, this pixel electrode and this public electrode are formed on this substrate maybe in this time substrate, and it is corresponding with each pixel cell, it is characterized in that: public electrode and pixel electrode are bending or bending shape, and this public electrode and this pixel electrode are staggered.
2. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 1 is characterized in that: this pixel electrode and this public electrode are broken line shape, multiple broken line shape, S shape or multiple S shape.
3. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 1 is characterized in that: this reflection horizon is made of dielectric material.
4. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 3 is characterized in that: this reflection horizon is made of multilayer dielectric film.
5. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 4 is characterized in that: this multilayer dielectric film is the polystyrene film and the tellurium film of overlapping setting.
6. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 1 is characterized in that: this reflection horizon has micro-protuberance.
7. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 1 is characterized in that: substrate further comprises a polaroid on this.
8. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 7 is characterized in that: this polaroid is an E type polaroid.
9. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 1 is characterized in that: substrate and following substrate respectively comprise a polaroid on this.
10. reflective plane inner switching type liquid crystal displaying apparatus as claimed in claim 9 is characterized in that: at least one polaroid is an E type polaroid.
11. liquid crystal indicator, comprise substrate on, one and should go up following substrate that substrate is oppositely arranged, the liquid crystal layer between last substrate and following substrate, many gate lines and data lines, be formed on this substrate maybe suprabasil pixel electrode of this time and public electrode, it is characterized in that: pixel electrode and public electrode are camber line or broken line shape.
12. liquid crystal indicator as claimed in claim 11 is characterized in that: this pixel electrode and this public electrode are W type, multiple W type, S type or multiple S type.
13. liquid crystal indicator as claimed in claim 11 is characterized in that: substrate further comprises a polaroid on this.
14. liquid crystal indicator as claimed in claim 13 is characterized in that: this polaroid is an E type polaroid.
15. liquid crystal indicator as claimed in claim 11 is characterized in that: substrate and following substrate respectively comprise a polaroid on this.
16. liquid crystal indicator as claimed in claim 15 is characterized in that: at least one polaroid is an E type polaroid.
Priority Applications (1)
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|---|---|---|---|
| CN 200410026920 CN1683956A (en) | 2004-04-15 | 2004-04-15 | Reflective plane internal switching liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026920 CN1683956A (en) | 2004-04-15 | 2004-04-15 | Reflective plane internal switching liquid crystal display device |
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| CN1683956A true CN1683956A (en) | 2005-10-19 |
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| CN 200410026920 Pending CN1683956A (en) | 2004-04-15 | 2004-04-15 | Reflective plane internal switching liquid crystal display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9709861B2 (en) | 2006-05-16 | 2017-07-18 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and semiconductor device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9709861B2 (en) | 2006-05-16 | 2017-07-18 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and semiconductor device |
| US10001678B2 (en) | 2006-05-16 | 2018-06-19 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and semiconductor device |
| US10509271B2 (en) | 2006-05-16 | 2019-12-17 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device comprising a semiconductor film having a channel formation region overlapping with a conductive film in a floating state |
| US11061285B2 (en) | 2006-05-16 | 2021-07-13 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device comprising a dogleg-like shaped pixel electrode in a plane view having a plurality of dogleg-like shaped openings and semiconductor device |
| US11106096B2 (en) | 2006-05-16 | 2021-08-31 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and semiconductor device |
| US11435626B2 (en) | 2006-05-16 | 2022-09-06 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device and semiconductor device |
| US11726371B2 (en) | 2006-05-16 | 2023-08-15 | Semiconductor Energy Laboratory Co., Ltd. | FFS-mode liquid crystal display device comprising a top-gate transistor and an auxiliary wiring connected to a common electrode in a pixel portion |
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