CN100397215C - Fringing electric field switch type liquid crystal display unit - Google Patents
Fringing electric field switch type liquid crystal display unit Download PDFInfo
- Publication number
- CN100397215C CN100397215C CNB2004100270986A CN200410027098A CN100397215C CN 100397215 C CN100397215 C CN 100397215C CN B2004100270986 A CNB2004100270986 A CN B2004100270986A CN 200410027098 A CN200410027098 A CN 200410027098A CN 100397215 C CN100397215 C CN 100397215C
- Authority
- CN
- China
- Prior art keywords
- switch type
- lcd device
- fringe field
- type lcd
- field switch
- 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 - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 36
- 230000005684 electric field Effects 0.000 title abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 238000009413 insulation Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims 2
- 239000011521 glass Substances 0.000 claims 2
- 239000000463 material Substances 0.000 claims 2
- 239000012780 transparent material Substances 0.000 claims 2
- 239000010408 film Substances 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The present invention discloses a fringing electric field switch type liquid crystal display unit which comprises a transparent upper substrate, a transparent lower substrate, a liquid crystal layer, a plurality of brake lines and data lines, wherein the liquid crystal layer is positioned between the upper substrate and the lower substrate; pixel units are formed from the brake lines and the data lines, and the brake lines and the data lines are formed on the lower substrate, a pixel electrode and a public electrode are arranged in each pixel unit; the public electrode forms a panel shape, and besides, at least one part of the pixel electrode form a curvilinear shape.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, particularly a kind of fringe field switch type lcd device.
[background technology]
Liquid crystal indicator is because have characteristics such as low diathermaneity, thin thickness and power consumption be low, so use day by day extensively, 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, thereby produced angle limitations.Fringe field switch (Fringe Field Switching, FFS) technology is based on problems such as the visual angle of conventional liquid crystal is narrow and small and the solution that proposes, itself and plane internal switch (In-PlaneSwitching, IPS) wide viewing angle technology difference is, the fringe field switching technique as a whole places pixel electrode under with transparency conducting layer public electrode, make Electric Field Distribution more intensive, so the fringe field switching technique have bigger transmission region.
The prior art of fringe field switch type lcd device as depicted in figs. 1 and 2, this liquid crystal indicator comprises substrate 14 on, substrate once 22 and the liquid crystal layer 17 between last substrate 14 and following substrate 22.Should go up substrate 14 1 sides one colored filter 15 and last alignment film 16 are set, alignment film 16 makes liquid crystal molecule form orientation on this.Pixel electrode 9 and public electrode 10 are set in this time substrate 22, this pixel electrode 9 and public electrode 10 drive the required electric field of liquid crystal molecule in order to produce, one insulation course 20 is arranged at and makes the insulation of being separated by of two electrodes between pixel electrode 9 and the public electrode 10, once alignment film 18 is arranged on the pixel electrode 9, and this time alignment film 18 makes liquid crystal molecule form orientation.Also be provided with many brake cables 3 and data line 7 in this time substrate 22, this brake cable 3 and data line 7 provide scanning signal and data signals respectively.This brake cable 3 constitutes thin film transistor (TFT) with source electrode 7a and drain 7b.
Produce an edge electric field when applying a voltage between public electrode 10 and pixel electrode 9, liquid crystal molecule reverses at surface level under this electric field action.Because this pixel electrode 9 is a pectination, this public electrode 10 is the panel shape, an and transparent insulating layer that alternating floor thickness is very little 20 between two electrodes, therefore Electric Field Distribution is more intensive, with respect to the plane internal switch technology, the invalid part of this electric field is littler, so this fringe field switch type lcd device aperture opening ratio and penetrance are higher.
But, a plurality of vertical bar shapeds that are parallel to each other that branch into of the pixel electrode 9 of prior art, the electric field that itself and public electrode 10 produce is a single direction, the deflection of liquid crystal molecule is also only rotated to this direction, and this fringe field switch type lcd device is single zone (Single Domain) fringe field switch type lcd device.This liquid crystal indicator is observed on different visual angles and can be produced colour cast, and influences display effect.
For solving the colour cast problem of the single edges of regions electric field of prior art switching liquid crystal display apparatus, industry proposes another kind of electrode arranging structure, as shown in Figure 3, it is the electrode arranging structure vertical view of the fringe field switch type lcd device of this another kind prior art, pixel electrode 190 has a bending part (not indicating), and this bending part is "＜" shape.When voltage was applied on this pixel electrode 190 and the public electrode 180, the electric field of Xing Chenging mainly was distributed on the both direction therebetween, is two territory electric fields.The pixel electrode 190 of this bending and public electrode 180 and the liquid crystal molecule that rotates towards this both direction are divided into two zones with a pixel, these two zones have different viewing angle characteristics, so this fringe field switch type lcd device is dual area (Two Domain) fringe field switch type lcd device.This liquid crystal indicator can be eliminated the colour cast problem of single edges of regions electric field switching liquid crystal display apparatus to a certain extent, thereby improves the display quality of LCD.The pixel electrode 190 of the dual area fringe field switch type lcd device of prior art also can be continuous "＜" shape and distributes.
But, the pixel electrode of this dual area fringe field switch type lcd device is broken line shape (i.e. "＜" shape), has sharp-pointed kink (i.e. the drift angle place of "＜" shape), in this sharp-pointed bending place, because electric field is unusual, the liquid crystal deflecting element at this place is unordered, causes swing offset (Disclination), reduces color quality.
[summary of the invention]
Have colour cast, visual angle problem of smaller for overcoming the prior art fringe field switch type lcd device, the invention provides a kind of fringe field switch type lcd device of eliminating colour cast and having wide viewing angle.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of fringe field switch type lcd device, it comprises transparent substrate, a transparent substrate down, a liquid crystal layer, many brake cables and the data line gone up, this liquid crystal layer is between last substrate and following substrate, the pixel cell that these many brake cables and data line forming array are arranged and being formed at down in the substrate, have pixel electrode and public electrode in each pixel cell, this public electrode is the panel shape, and this pixel electrode is smooth curve shape.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of fringe field switch type lcd device, it comprises transparent substrate, a transparent substrate down, a liquid crystal layer, many brake cables and the data line gone up, this liquid crystal layer is between last substrate and following substrate, the pixel cell that these many brake cables and data line forming array are arranged and being formed at down in the substrate, have pixel electrode and public electrode in each pixel cell, this public electrode is the panel shape, this pixel electrode comprises at least two parts, and these at least two parts are respectively to the different directions smooth curved.
Compared with prior art, the advantage of fringe field switch type lcd device of the present invention is that its pixel electrode is a smooth curve shape, can produce the multiple domain electric field, make liquid crystal molecule to different directions deflection, its colour cast that observation post produces on different visual angles is cancelled out each other, thereby obtains better display effect.
[description of drawings]
Fig. 1 is the structural representation of the single edges of regions electric field of prior art switching liquid crystal display apparatus.
Fig. 2 is the electrode plane synoptic diagram of the single edges of regions electric field of prior art switching liquid crystal display apparatus.
Fig. 3 is the electrode plane synoptic diagram of prior art dual area fringe field switch type lcd device.
Fig. 4 is the structural representation of fringe field switch type lcd device first embodiment of the present invention.
Fig. 5 is the electrode plane synoptic diagram of fringe field switch type lcd device first embodiment of the present invention.
Fig. 6 is the electrode plane synoptic diagram of fringe field switch type lcd device second embodiment of the present invention.
[embodiment]
Please refer to Fig. 4, is the structural plan figure of fringe field switch type lcd device of the present invention.This fringe field switch type lcd device comprises that one transparently goes up substrate 214, one and last the substrate 214 following substrate 222 and the liquid crystal layer 217 between last substrate 214 and following substrate 222 that are oppositely arranged.For down substrate 222, its inboard is provided with a public electrode 225 and pixel electrode 219, and this pixel electrode 219 and public electrode 225 are by an insulation course 220 insulation of being separated by, and once alignment film 218 is arranged at down in the substrate 222.For last substrate 214, its inboard sets gradually alignment film 216 on a colored filter 215 and.
Please refer to Fig. 5, be the floor map of fringe field switch type lcd device of the present invention, this fringe field switch type lcd device also comprises many brake cables 223 and data line 224, and it constitutes a plurality of pixel regions, in each pixel region, pixel electrode 219 is a C shape.
Because pixel electrode 219 is a C shape, with the broken line shape electrode comparison of prior art, it does not have sharp-pointed kink (i.e. the drift angle place of "＜" shape), but replaces sharp-pointed kink with smooth curve, can avoid the swing offset that is caused by sharp-pointed kink.
Because pixel electrode 219 is a C shape, so the summation that can regard direction continually varying linear microelectrode as, but not has only the combination of the linear electrode of both direction in the prior art, therefore when voltage puts on pixel electrode 219 and the public electrode 225, the deflection of liquid crystal molecule also is continuous variation in the liquid crystal layer 217, a plurality of liquid crystal molecules in one pixel region have a plurality of yawing moments corresponding to the shape of electrode, so its contrast is comparatively average on each visual angle.And this fringe field switch type lcd device produces multizone under bright attitude, the colour cast of all directions is offseted, so that wide viewing angle to be provided.So this fringe field switch type lcd device is multizone (Multi-Domain) fringe field switch type lcd device.
Please refer to Fig. 6, it is the floor map of fringe field switch type lcd device second embodiment of the present invention, this fringe field switch type lcd device comprises many brake cables 327 and data line 326, it constitutes a plurality of pixel regions, in each pixel region, pixel electrode 329 is a S shape, and public electrode 328 is separated by with these pixel electrode 329 insulation.
Because electric field results between pixel electrode 329 and the public electrode 328, so the effective viewing area of each pixel cell only is the zone at pixel electrode 329 and public electrode 328 places, and should the zone and this pixel cell between the space be inactive area.Because second embodiment adopts the data line 326 similar to pixel electrode 329 shapes, so the inactive area in its each pixel cell is less, and its display efficiency is higher.
What this second embodiment adopted pixel electrode is shaped as S shape, and this S shape may extend to more high-order, promptly multiple S shape or waveform.
Claims (22)
1. fringe field switch type lcd device, comprise transparent substrate, a transparent substrate down, a liquid crystal layer, many brake cables and the data line gone up, this liquid crystal layer is between last substrate and following substrate, the pixel cell that these many brake cables and data line forming array are arranged and being formed at down in the substrate, have pixel electrode and public electrode in each pixel cell, this public electrode is the panel shape, it is characterized in that: this pixel electrode is smooth curve shape.
2. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this pixel electrode is a C shape.
3. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this pixel electrode is a S shape.
4. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this pixel electrode is multiple S shape.
5. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this time substrate is a transparent material.
6. fringe field switch type lcd device as claimed in claim 1 is characterized in that: substrate also comprises a colored filter on this.
7. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this data line is a linear.
8. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this data line is the shaped form identical with this pixel electrode.
9. fringe field switch type lcd device as claimed in claim 1 is characterized in that: this public electrode and pixel electrode are transparent conductive material.
10. fringe field switch type lcd device as claimed in claim 1 is characterized in that: substrate is a glass material on this.
11. fringe field switch type lcd device as claimed in claim 1 is characterized in that: further comprise an insulation course, this insulation course is arranged between pixel electrode and the public electrode.
12. fringe field switch type lcd device, comprise transparent substrate, a transparent substrate down, a liquid crystal layer, many brake cables and the data line gone up, this liquid crystal layer is between last substrate and following substrate, the pixel cell that these many brake cables and data line forming array are arranged and being formed at down in the substrate, have pixel electrode and public electrode in each pixel cell, this public electrode is the panel shape, it is characterized in that: this pixel electrode comprises at least two parts, and these at least two parts are respectively to the different directions smooth curved.
13. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this pixel electrode is a C shape.
14. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this pixel electrode is a S shape.
15. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this pixel electrode is multiple S shape.
16. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this time substrate is a transparent material.
17. fringe field switch type lcd device as claimed in claim 12 is characterized in that: substrate also comprises a colored filter on this.
18. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this data line is a linear.
19. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this data line is the shaped form identical with this pixel electrode.
20. fringe field switch type lcd device as claimed in claim 12 is characterized in that: this public electrode and pixel electrode are transparent conductive material.
21. fringe field switch type lcd device as claimed in claim 12 is characterized in that: substrate is a glass material on this.
22. fringe field switch type lcd device as claimed in claim 12 is characterized in that: further comprise an insulation course, this insulation course is arranged between pixel electrode and the public electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100270986A CN100397215C (en) | 2004-04-28 | 2004-04-28 | Fringing electric field switch type liquid crystal display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100270986A CN100397215C (en) | 2004-04-28 | 2004-04-28 | Fringing electric field switch type liquid crystal display unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690815A CN1690815A (en) | 2005-11-02 |
| CN100397215C true CN100397215C (en) | 2008-06-25 |
Family
ID=35346346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100270986A Expired - Lifetime CN100397215C (en) | 2004-04-28 | 2004-04-28 | Fringing electric field switch type liquid crystal display unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100397215C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8106865B2 (en) | 2006-06-02 | 2012-01-31 | Semiconductor Energy Laboratory Co., Ltd. | Display device and driving method thereof |
| JP5519101B2 (en) * | 2007-09-28 | 2014-06-11 | 株式会社ジャパンディスプレイ | Electronics |
| JP6415856B2 (en) * | 2014-05-30 | 2018-10-31 | 株式会社ジャパンディスプレイ | Liquid crystal display |
| KR102211598B1 (en) * | 2014-07-10 | 2021-02-03 | 삼성디스플레이 주식회사 | Liquid crystal display |
| CN105137680B (en) | 2015-10-20 | 2018-11-06 | 京东方科技集团股份有限公司 | A kind of liquid crystal display electrode, array substrate, display panel, display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002014374A (en) * | 2000-04-28 | 2002-01-18 | Hitachi Ltd | Liquid crystal display device |
| US20020067453A1 (en) * | 2000-12-01 | 2002-06-06 | Kim Chul Ha | Fringe field switching mode liquid crystal display, and fabrication method therefor |
| CN1359026A (en) * | 2000-10-10 | 2002-07-17 | 现代显示器科技公司 | Dispersion field switching mode LCD |
| JP2002244145A (en) * | 2000-12-05 | 2002-08-28 | Hyundai Display Technology Inc | Liquid crystal display device of fringe field drive mode |
| US6449026B1 (en) * | 1999-06-25 | 2002-09-10 | Hyundai Display Technology Inc. | Fringe field switching liquid crystal display and method for manufacturing the same |
| JP2004029854A (en) * | 2003-10-20 | 2004-01-29 | Hitachi Ltd | Liquid crystal display device |
-
2004
- 2004-04-28 CN CNB2004100270986A patent/CN100397215C/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6449026B1 (en) * | 1999-06-25 | 2002-09-10 | Hyundai Display Technology Inc. | Fringe field switching liquid crystal display and method for manufacturing the same |
| JP2002014374A (en) * | 2000-04-28 | 2002-01-18 | Hitachi Ltd | Liquid crystal display device |
| CN1359026A (en) * | 2000-10-10 | 2002-07-17 | 现代显示器科技公司 | Dispersion field switching mode LCD |
| US20020067453A1 (en) * | 2000-12-01 | 2002-06-06 | Kim Chul Ha | Fringe field switching mode liquid crystal display, and fabrication method therefor |
| JP2002244145A (en) * | 2000-12-05 | 2002-08-28 | Hyundai Display Technology Inc | Liquid crystal display device of fringe field drive mode |
| JP2004029854A (en) * | 2003-10-20 | 2004-01-29 | Hitachi Ltd | Liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1690815A (en) | 2005-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100593752C (en) | Liquid crystal display panel, pixel structure and method of manufacture | |
| CN103185993B (en) | The array base palte of IPS/FFS type liquid crystal indicator | |
| CN106324873A (en) | Liquid crystal display device with visual angle switchable, and method for switching visual angle | |
| CN109669305B (en) | Array substrate and liquid crystal display panel | |
| US9939673B2 (en) | Curved display device | |
| CN103941501B (en) | Tft array substrate, display panels and liquid crystal display | |
| EP2801859A2 (en) | Active-matrix liquid crystal display which combines both IPS and FFS electrode configurations to generate a horizontal component of the electric field | |
| CN102629047B (en) | Pixel unit, array substrate, liquid crystal panel and display equipment | |
| CN104808401A (en) | Liquid crystal display panel | |
| CN102695983A (en) | Liquid crystal display device | |
| CN102262322A (en) | Liquid crystal display device and liquid crystal display device substrate | |
| CN115343870A (en) | Display panel with switchable wide and narrow viewing angles, display device and driving method | |
| CN102654686B (en) | Liquid crystal display panel and display device | |
| CN100397215C (en) | Fringing electric field switch type liquid crystal display unit | |
| CN102654694A (en) | Liquid crystal display panel and liquid crystal display | |
| CN207249311U (en) | Array base palte and display device | |
| TW546625B (en) | Liquid crystal display device and drive method thereof | |
| CN100376990C (en) | Flat inside switching type liquid crystal display device | |
| CN201289562Y (en) | Liquid crystal display panel | |
| KR100717186B1 (en) | fringe field switching mode liquid crystal display device | |
| CN102998857A (en) | Slit electrode, array substrate and display device | |
| CN1797138A (en) | LCD device | |
| CN202854461U (en) | Array substrate, liquid crystal display panel and liquid crystal displayer | |
| CN201383064Y (en) | VA type liquid crystal display device | |
| CN206805091U (en) | A kind of display base plate, display panel and 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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080625 |