CN103901676B - Fringe field switching mode LCD - Google Patents
Fringe field switching mode LCD Download PDFInfo
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- CN103901676B CN103901676B CN201210589927.4A CN201210589927A CN103901676B CN 103901676 B CN103901676 B CN 103901676B CN 201210589927 A CN201210589927 A CN 201210589927A CN 103901676 B CN103901676 B CN 103901676B
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- crystal indicator
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Abstract
The invention discloses a kind of fringe field switching mode LCD, it is characterized in that, including: the upper substrate being oppositely arranged and infrabasal plate, it is formed at the black matrix" of described upper substrate, being formed at the pel array of described infrabasal plate, each pixel includes being sequentially formed in the public electrode of described infrabasal plate, insulating barrier and Duo Gen banding pixel electrode；Described each pixel includes that the transmission region surrounded by described black matrix", described public electrode include being positioned at the opening below described transmission region outermost banding pixel electrode.Use technical scheme can improve the transmitance between pixel electrode and black matrix" edge, thus improve the overall transmitance of described liquid crystal indicator.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of fringe field switching mode LCD.
Background technology
The liquid crystal indicator electrically conducting transparent material of fringe field switching (Fringe Field Switching, FFS) pattern
Material forms public electrode and pixel electrode, produces fringe field by pixel electrode in same plane, make between pixel electrode and
Aligned liquid-crystal molecule directly over electrode can be parallel to the flat of substrate under the effect of the electric field level component of its point
Direction, face rotates.
Fig. 1 (a) is the top view of single pixel in existing fringe field switching liquid crystal display.This liquid crystal indicator
Including pel array, each pixel includes the pixel electrode 3 of many bandings, the public electrode 2 of plane and black matrix" 6, described
The region that black matrix" 6 surrounds is transmission region.Fig. 1 (b) is existing fringe field switching liquid crystal display in Fig. 1 (a)
The profile at a-a ' place, joins in opposite directions including infrabasal plate 1 and upper substrate 5, described infrabasal plate 1 and upper substrate 5 D within a predetermined distance
Put, between upper and lower base plate, have liquid crystal layer (not shown).The face down side of substrate 1 of upper substrate is provided with black matrix" 6, described
Transmission region S is surrounded by described black matrix" and forms.Infrabasal plate is provided with public electrode 2 towards the side of upper substrate 5, described public
Being covered with insulating barrier 4 on electrode 2, the distance between pixel electrode 3, and described pixel electrode 3 is formed at the top of described insulating barrier 4
L is less than distance D between width W and the upper and lower substrate of pixel electrode 3, thus forms Fig. 1 above described pixel electrode 3
Shown parabolic Electric Field Distribution, the horizontal component of this electric field makes the liquid crystal molecule of liquid crystal layer be parallel to upper and lower substrate
In-plane rotate, make light from transmission region S penetrate.
In above-mentioned existing fringe field switching liquid crystal display, the distribution of its effective opening transmitance is as in figure 2 it is shown, scheme
Can be seen that in 2 that the transmitance in the i.e. region that pixel electrode covers at a is relatively low, and be that outermost pixel electrode is to black at b
The transmitance of colour moment array edge is relatively low, and the most described transmission region is on the low side in the transmitance of black matrix" edge, and above two
The transmitance that this device of regional effect that individual transmitance is relatively low is overall.
Summary of the invention
It is an object of the invention to propose a kind of fringe field switching mode LCD, it is possible to solve existing FFS
In liquid crystal indicator, transmission region is in the transmitance of black matrix" edge problem on the low side.
For reaching this purpose, the present invention by the following technical solutions:
A kind of fringe field switching mode LCD, including: the upper substrate being oppositely arranged and infrabasal plate, it is formed at institute
Stating the black matrix" of upper substrate, be formed at the pel array of described infrabasal plate, each pixel includes being sequentially formed in described lower base
The public electrode of plate, insulating barrier and Duo Gen banding pixel electrode；Described each pixel include by described black matrix" surround saturating
Light region, described public electrode includes being positioned at the opening below described transmission region outermost banding pixel electrode.
Described opening includes the first opening and the second opening, lays respectively at described transmission region outermost banding pixel electricity
Below pole.
Described opening includes that the first limit and the second limit, described first limit are positioned at described outermost pixel electrode and black matrix"
Between, described second limit is positioned at below described outermost pixel electrode.
Described opening includes the first limit and the second limit, and align with described black matrix" inside edge in described first limit, described
Second limit is positioned at below described outermost pixel electrode.
Described opening includes that the first limit and the second limit, described first limit are positioned at described outermost pixel electrode and black matrix"
Between, described second limit is between described outermost pixel electrode and adjacent pixel electrodes.
Described opening includes the first limit and the second limit, and align with described black matrix" inside edge in described first limit, described
Second limit is between described outermost pixel electrode and adjacent pixel electrodes.Described transmission region is all covered with except outside mouth
Public electrode.
The material of described public electrode is ITO or IZO.
The material of described pixel electrode is ITO or IZO.
Described pixel electrode is the folding bar shape of vertical bar shape or bending.
Use technical scheme can improve the transmitance between pixel electrode and black matrix" edge, thus carry
The high overall transmitance of described liquid crystal indicator.
Accompanying drawing explanation
Fig. 1 (a) is the pixel schematic top plan view of existing FFS liquid crystal indicator；
Fig. 1 (b) is the pixel generalized section of existing FFS liquid crystal indicator；
Fig. 2 is the pixel transmitance distribution schematic diagram of existing FFS liquid crystal indicator；
Fig. 3 (a) is the pixel schematic top plan view of the FFS liquid crystal indicator that the embodiment of the present invention provides；
Fig. 3 (b) is the pixel generalized section of the FFS liquid crystal indicator that the embodiment of the present invention provides；
Fig. 3 (c) is the pixel schematic top plan view of the FFS liquid crystal indicator that the embodiment of the present invention further provides for；
Fig. 3 (d) is the pixel generalized section of the FFS liquid crystal indicator that the embodiment of the present invention further provides for；
Fig. 4 is the pixel transmitance distribution schematic diagram of the FFS liquid crystal indicator that the embodiment of the present invention provides；
Fig. 5 is FFS liquid crystal indicator and the existing liquid crystal indicator global voltage-thoroughly that the embodiment of the present invention provides
Cross rate curve comparison；
The pixel generalized section of other three kinds of FFS liquid crystal indicators that Fig. 6 to Fig. 8 provides for the embodiment of the present invention.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Fig. 3 (a) is single pixel in a kind of fringe field switching mode LCD that the embodiment of the present invention provides
Schematic top plan view.This liquid crystal indicator includes that pel array, each pixel include the pixel electrode 31 and 32 of many bandings, put down
The public electrode 2 in face and black matrix" 6, the region that black matrix" 6 surrounds is transmission region.Described public electrode 2 is at printing opacity
Being etched and formed opening 7 below the outermost pixel electrode in the left side 31 in region, described opening 7 makes described public electrode 2 exist
The both sides being positioned at transmission region left side outermost pixel electrode 3 form the first limit 21 and the second limit 22 respectively.Fig. 3 (b) is above-mentioned
The generalized section of fringe field switching mode LCD, this liquid crystal indicator includes: upper substrate 5 He being oppositely arranged
Infrabasal plate 1, described upper substrate 5 has black matrix" 6, and infrabasal plate 1 is sequentially formed with public electrode 2, insulating barrier 4 and Duo Gen respectively
Banding pixel electrode 31 and 32, described public electrode 2 includes being positioned at the outermost pixel electrode in the left side 31 times of this transmission region
The opening 7 of side, described opening 7 has the first limit 21 and the second limit 22, and usual first limit 21 and the second limit 22 are parallel to outermost
Pixel electrode 31.Described banding pixel electrode 31 and 32 can be vertical bar shape, it is also possible to be the folding bar shape of bending, such as V-arrangement, W shape
Deng.
The present embodiment further provides for a kind of fringe field switching mode LCD, its single pixel schematic top plan view
As shown in Figure 3 (c), each pixel includes the pixel electrode 31 and 32 of many bandings, the public electrode 2 of plane and black matrix"
6, the region that black matrix" 6 surrounds is transmission region.Described public electrode 2 is at the outermost pixel electrode in the left and right of transmission region
Being etched and formed opening 7 below 31 respectively, described opening 7 makes described public electrode 2 be positioned at transmission region left and right outermost
The both sides of pixel electrode 31 form the first limit 21 and the second limit 22 respectively.Fig. 3 (d) is above-mentioned fringe field switching mode liquid crystal display
The generalized section of device, this liquid crystal indicator includes: the upper substrate 5 being oppositely arranged and infrabasal plate 1, and described upper substrate 5 has
Black matrix" 6, infrabasal plate 1 is had to be sequentially formed with public electrode 2, insulating barrier 4 and Duo Gen banding pixel electrode 31 and 32, institute respectively
State public electrode 2 and include laying respectively at the opening 7 below the outermost pixel electrode in left and right 31 of this transmission region, described opening
7 have the first limit 21 and the second limit 22, and usual first limit 21 and the second limit 22 are parallel to outermost pixel electrode 31.Described banding
Pixel electrode 31 and 32 can be vertical bar shape, it is also possible to be the folding bar shape of bending, such as V-arrangement, W shape etc..Shape on described infrabasal plate 1
Become layer of transparent conductive layer for use as public electrode 2, respectively formed left and right outermost pixel electrode 31 and black matrix" 6 it
Between position this transparency conducting layer is etched being formed described opening 7, the width of described opening 7 more than outermost pixel electricity
The width of pole 31.After etching, described transparency conducting layer is formed respectively in the left and right sides and is positioned at the outermost pixel electrode of transmission region
The first limit 21 outside 31 and be positioned at the second limit 22 inside the outermost pixel electrode of transmission region 31, will have above-mentioned etching
The transparency conducting layer of rear pattern is as public electrode, and the most described transmission region is all covered with public electrode in addition to described opening 7.
Tile on described public electrode 2 insulating barrier 4, and described insulating barrier 4 can be organic film.Between described insulating barrier 4 is formed
Every equal transparent conductive patterns as pixel electrode 31 and 32.
Under driving voltage effect, public electrode 2 and pixel electrode 31 and 32 respectively as negative pole and positive pole, now conduct
The common electrical of electric conductor extremely internal charge is concentrated in the edge of described opening, i.e. includes described first limit 21 and the second limit
22.The charge density distribution of the same position that charge distribution density at the first limit 21 is greater than in Fig. 1 in the present embodiment, so
The electric field of the overlying regions liquid crystal region between the first limit 21 and outermost pixel electrode 31 is more than the electricity of same area in Fig. 1
, then electric field level component also can increase accordingly, and the rotation in the horizontal direction of the liquid crystal molecule in this region becomes big so that this district
The transmitance in territory increases.
Compared to Fig. 1 not with the public electrode of the charges of different polarity, therefore outermost below left and right outermost pixel electrode 31
The electric field of side pixel electrode 31 top liquid crystal region can weaken so that this region transmitance is declined slightly.Described second limit
22 between outermost pixel electrode 31 and the pixel electrode 32 being adjacent, described second limit 22 and this outermost pixel electricity
Pole 31 formed electric field and with between adjacent pixel electrodes 32 formed electric field at described outermost pixel electrode 31 and adjacent picture
Between element electrode 32, the horizontal direction mutual of the liquid crystal region of top is offset, the therefore transmitance in this region not significant change.
Although the transmitance above outermost pixel electrode 31 can decrease, but the first limit 21 and outermost pixel electrode
Between 31, the increase of the liquid crystal region transmitance of overlying regions can be more, and the most described liquid crystal indicator entirety transmitance has
Improved.As shown in Figure 4, at A liquid crystal region liquid crystal molecule above pixel electrode and between pixel electrode rotate can be corresponding
Diminish, the reduction of the transmitance in this region；The liquid crystal region of overlying regions between the first limit 21 and outermost pixel electrode at B
Liquid crystal molecule rotates and increases, and the transmitance in this region can increase accordingly；The transmitance increased at B can be more than passing through of reducing at A
Rate, therefore overall transmitance can increase.Voltage-transmittance curve figure as shown in Figure 5, transverse axis is driving voltage,
The longitudinal axis is transmitance, and curve L1 is the liquid crystal indicator transmittance curve in the present embodiment, and curve L2 is the liquid crystal shown in Fig. 1
The transmittance curve of display device, its transmitance of the liquid crystal indicator described in the present embodiment reaches as high as 13.5%, ratio Fig. 1 institute
The maximum transmission of the liquid crystal indicator shown improves about 3.7%.
It should be noted that the liquid crystal indicator described in the embodiment of the present invention is not limited only to be provided with three shown in figure
The situation of pixel electrode, if described liquid crystal indicator is provided with four or five even more pixel electrodes, be too
Etch on public electrode below outermost two pixel electrodes in the left and right of transmission region respectively and form opening, to be formed
First limit of described opening and the second limit；Described first limit and the second limit lay respectively at the left and right two of this outermost pixel electrode
Limit, in order to increase the transmitance of liquid crystal layer between outermost pixel electrode and black matrix".
Fig. 6 to Fig. 8 is 3 kinds of deformation of the embodiment of the present invention, the first limit 21 of the opening of public electrode described in Fig. 6 and institute
State the inside edge alignment of black matrix" 6, the now increasing of liquid crystal region transmitance between public electrode and outermost pixel electrode
Adding can be bigger than in Fig. 3, and described liquid crystal indicator entirety transmitance is also the biggest.First limit of opening described in Fig. 6 is also
May be located at the lower section of black matrix" 6, but the liquid crystal molecule between the first limit and black matrix" inside edge is hidden by black matrix"
Gear, therefore its transmitance is essentially identical with the situation alignd in black matrix" inside edge with the first limit shown in Fig. 6.Institute in Fig. 7
The inside edge alignment of black matrix" 6 described in the first limit 21 of the opening stating public electrode, the of the opening of described public electrode
Two limits 22 are positioned at the lower section of outermost pixel electrode 31, and now above outermost pixel electrode, the reduction of liquid crystal region transmitance is wanted
Less than the situation shown in Fig. 3, overall transmitance can increase further.Second limit of opening described in Fig. 7 can also with described
The outer ledge alignment of outside pixel electrode, to reduce the transmitance of liquid crystal region above described outermost pixel electrode further
Loss.First limit 21 of the opening of public electrode described in Fig. 8 be positioned at described black matrix" 6 and outermost pixel electrode 31 it
Between, the second limit 22 of the opening of described public electrode is positioned at the lower section of outermost pixel electrode, now on outermost pixel electrode
The reduction of side's liquid crystal region transmitance is less than the situation shown in Fig. 3, and overall transmitance also can promote.And as can be seen here
First limit 21 of described opening is the closer to described black matrix" edge, and the transmitance of described liquid crystal indicator is the highest；Described open
Second limit 22 of mouth is the closer to the pixel electrode 32 adjacent with described outermost pixel electrode, passing through of described liquid crystal indicator
Rate is the lowest, and further away from the pixel electrode 32 adjacent with described outermost pixel electrode, the transmitance of described liquid crystal indicator is more
High.First limit of described opening the most outwards can be located at below black matrix" 6, the most inwardly can be located at outermost pixel electrode 31 with black
Between colour moment battle array 6；Second limit 22 of described opening the most outwards can be located at the outer ledge of outermost pixel electrode 31, the most inwardly may be used
Between described outermost pixel electrode 31 and the pixel electrode 32 adjacent with described outermost pixel electrode.
Use technical scheme can improve the transmitance between pixel electrode and black matrix" edge, thus carry
The high overall transmitance of described liquid crystal indicator.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any it is familiar with the people of this technology in the technical scope that disclosed herein, the change that can readily occur in or replacement, all should contain
Within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (9)
1. a fringe field switching mode LCD, it is characterised in that including: the upper substrate being oppositely arranged and lower base
Plate, is formed at the black matrix" of described upper substrate, is formed at the pel array of described infrabasal plate, and each pixel includes sequentially forming
Public electrode, insulating barrier and Duo Gen banding pixel electrode in described infrabasal plate；Described each pixel includes by described black square
The transmission region that battle array is surrounded, described public electrode includes being positioned at opening below described transmission region outermost banding pixel electrode
Mouthful；Described transmission region is except being all covered with public electrode outside mouth.
2. liquid crystal indicator as claimed in claim 1, it is characterised in that described opening includes that the first opening and second is opened
Mouthful, lay respectively at below described transmission region outermost banding pixel electrode.
3. liquid crystal indicator as claimed in claim 1 or 2, it is characterised in that described opening includes the first limit and the second limit,
Described first limit is between described outermost pixel electrode and black matrix", and described second limit is positioned at described outermost pixel electricity
Below pole.
4. liquid crystal indicator as claimed in claim 1 or 2, it is characterised in that described opening includes the first limit and the second limit,
Aliging with described black matrix" inside edge in described first limit, described second limit is positioned at below described outermost pixel electrode.
5. liquid crystal indicator as claimed in claim 1 or 2, it is characterised in that described opening includes the first limit and the second limit,
Described first limit is between described outermost pixel electrode and black matrix", and described second limit is positioned at described outermost pixel electricity
Between pole and adjacent pixel electrodes.
6. liquid crystal indicator as claimed in claim 1 or 2, it is characterised in that described opening includes the first limit and the second limit,
Aliging with described black matrix" inside edge in described first limit, described second limit is positioned at described outermost pixel electrode and adjacent picture
Between element electrode.
7. liquid crystal indicator as claimed in claim 1, it is characterised in that the material of described public electrode is ITO or IZO.
8. liquid crystal indicator as claimed in claim 1, it is characterised in that the material of described pixel electrode is ITO or IZO.
9. liquid crystal indicator as claimed in claim 1, it is characterised in that described pixel electrode is the folding of vertical bar shape or bending
Strip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210589927.4A CN103901676B (en) | 2012-12-31 | 2012-12-31 | Fringe field switching mode LCD |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210589927.4A CN103901676B (en) | 2012-12-31 | 2012-12-31 | Fringe field switching mode LCD |
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| CN103901676A CN103901676A (en) | 2014-07-02 |
| CN103901676B true CN103901676B (en) | 2016-12-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107529627A (en) * | 2017-08-14 | 2018-01-02 | 南京中电熊猫液晶显示科技有限公司 | A kind of liquid crystal display device |
| CN107331315B (en) * | 2017-08-24 | 2019-04-26 | 上海天马微电子有限公司 | A kind of curved-surface display device |
| CN110441965B (en) * | 2019-08-23 | 2022-05-20 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236340A (en) * | 2007-01-29 | 2008-08-06 | 京东方显示器科技公司 | Fringe field switching mode liquid crystal display and manufacturing method thereof |
| CN101490611A (en) * | 2006-07-21 | 2009-07-22 | 夏普株式会社 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20080046876A (en) * | 2006-11-23 | 2008-05-28 | 삼성전자주식회사 | Display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101490611A (en) * | 2006-07-21 | 2009-07-22 | 夏普株式会社 | Display device |
| CN101236340A (en) * | 2007-01-29 | 2008-08-06 | 京东方显示器科技公司 | Fringe field switching mode liquid crystal display and manufacturing method thereof |
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