CN103941501A - TFT array substrate, liquid crystal display panel and liquid crystal display - Google Patents
TFT array substrate, liquid crystal display panel and liquid crystal display Download PDFInfo
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- CN103941501A CN103941501A CN201310716768.4A CN201310716768A CN103941501A CN 103941501 A CN103941501 A CN 103941501A CN 201310716768 A CN201310716768 A CN 201310716768A CN 103941501 A CN103941501 A CN 103941501A
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Abstract
The invention discloses a TFT array substrate, a liquid crystal display panel and a liquid crystal display. The TFT array substrate comprises a plurality of pixel electrodes, a first insulating layer and a plurality of compensation electrodes. The pixel electrodes are located in a pixel area, the pixel electrodes are in a bent strip shape and are arranged at intervals, the pixel area is divided into two domain areas by bending portions of the pixel electrodes, the first insulating layer is arranged on the pixel electrodes, the compensation electrodes are arranged on the first insulating layer and are arranged between the pixel electrodes, each compensating electrode is arranged between every two pixel electrodes, the compensating electrodes are in a bent strip shape, and the bending portions of the compensation electrodes are located at the connecting position of the two domain areas. According to the TFT array substrate, the liquid crystal display panel and the liquid crystal display, the area of the disclination area in a double-domain structure of the IPS and FFS mode is reduced, the display performance of the double-domain structure is improved, and the light penetration rate of the liquid crystal display is improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, be specifically related to array base-plate structure technical field, relate in particular to a kind of tft array substrate, display panels and liquid crystal display.
Background technology
IPS(In-Plane Switching, in-plane changes) pattern and FFS(Fringe Field Switching, fringe field switching) liquid crystal display of pattern provides a kind of liquid crystal device structure of wide viewing angle, pixel electrode and public electrode are arranged on same substrate, carry out liquid crystal drive with the optical axis that changes liquid crystal molecule at the deflection being parallel in base plan by producing transverse electric field force.Wherein, single domain (one domain) technology under IPS and FFS pattern is widely used because of advantages such as its visual angle are wide, colour cast is little, low in energy consumption.But along with user is more and more higher to the requirement of display screen performance, the defect such as visual angle colour cast, poor contrast existing in single domain technology is more and more obvious, therefore two farmlands (two domain) technology is arisen at the historic moment.Each pixel region is divided into Liang Gechou district by two farmlands technology, and the liquid crystal phase complementation in Liang Gechou district is repaid liquid crystal display is well improved in optical property with great visual angle.Simultaneously two farmlands display screen does not need to have the thick polaroid of viewing angle compensation, can meet market for the more and more thinner requirement of liquid crystal display yet.
Fig. 1 is the structural representation of two farmlands pixel region of existing liquid crystal display.The pixel electrode 11 of two farmlands pixel region 10 is designed to the strip of bending, thus, can the zones of different in a pixel region produce the different electric field of direction, thereby make the liquid crystal molecule on different farmlands in pixel region turn to different directions, obtain larger visual angle.
Although existing pair of domain structure has improvement effect aspect visual angle, but there is a defect: at the intersection in pixel region Liang Gechou district, position shown in Reference numeral 12 as shown in Figure 1, amount of force equidirectional is contrary in the vertical direction owing to being subject to the electric field of formation of Liang Gechou district pixel electrode for liquid crystal, liquid crystal cannot rotate, therefore, locational liquid crystal shown in Reference numeral 12 can not play the effect that changes line polarisation polarization direction, finally cause under the each GTG except zeroth order gray scale, light source all cannot pass through upper polaroid, also be, on the position shown in Reference numeral 12, can produce a black line.Similar, the acting force of above-mentioned electrode that is subject to Liang Gechou district near the liquid crystal of intersection is close, and liquid crystal also can be affected, and rotates difficulty.Above-mentioned phenomenon is called as disclination (disclination) phenomenon.Figure 2 illustrates the disclination phenomenon of existing pair of farmland pixel region, as shown in Figure 2, the juncture area in Liang Gechou district has the black area of certain area (disclination region), and the light penetration rate of liquid crystal display declines.
Summary of the invention
Technical matters to be solved by this invention is to propose a kind of tft array substrate, display panels and liquid crystal display, reduce the area in disclination region in the two domain structures of IPS or FFS pattern, improve the display performance of two domain structures, improved the light penetration rate of liquid crystal display.
In first aspect, the embodiment of the present invention provides a kind of tft array substrate, comprising:
Substrate;
Be positioned at multi-strip scanning line and many data lines on described substrate, multiple pixel regions that described multi-strip scanning line and described many data lines intersection limit;
The multiple pixel electrodes that are positioned at described pixel region, each pixel electrode is the strip of bending and is intervally installed, and described pixel region is divided into Liang Gechou district by the kink of described multiple pixel electrodes;
Be positioned at the public electrode on described substrate; Wherein, described public electrode and described multiple pixel electrode are electrically insulated by the first insulation course;
Be arranged on the second insulation course on described multiple pixel electrode;
Be arranged on the multiple compensating electrodes on described the second insulation course and between described multiple pixel electrodes, wherein, between every two pixel electrodes, be provided with a compensating electrode, described compensating electrode is the strip of bending, and the bending part of described multiple compensating electrodes is in the junction in described Liang Gechou district.
In second aspect, the embodiment of the present invention provides a kind of tft array substrate, it is characterized in that, comprising:
Substrate;
Be positioned at multi-strip scanning line and many data lines on described substrate, multiple pixel regions that described multi-strip scanning line and described many data lines intersection limit;
Be positioned at multiple pixel electrodes and multiple public electrode of described pixel region, each pixel electrode and each public electrode are the strip of bending and are arranged in same layer, and the alternative arrangement setting of each interval, described pixel region is divided into Liang Gechou district by the kink of described multiple pixel electrodes and described multiple public electrodes;
Be arranged on the first insulation course on described multiple pixel electrode and multiple public electrode;
Be arranged on the multiple compensating electrodes on described the first insulation course and between adjacent pixel electrode and public electrode, wherein, between every two adjacent pixel electrodes and public electrode, be provided with a compensating electrode, described compensating electrode is the strip of bending, and the bending part of described multiple compensating electrodes is in the junction in described Liang Gechou district.
In the third aspect, the embodiment of the present invention provides a kind of display panels, comprise tft array substrate that any embodiment of the present invention provides, and the color membrane substrates that is oppositely arranged of described tft array substrate and be clipped in described tft array substrate and described color membrane substrates between liquid crystal layer.
In fourth aspect, the embodiment of the present invention provides a kind of liquid crystal display, comprises the display panels that any embodiment of the present invention provides.
The present invention is by arranging the mode of a compensating electrode between every two pixel electrodes in the two domain structures of FFS, or the mode of a compensating electrode is set between every two the adjacent pixel electrodes in the two domain structures of IPS and public electrode, in the plane of pixel electrode and public electrode place substrate, form the plane electric fields of an In-Plane, for liquid crystal molecule placed on it provides a new transverse electric field force, promoting the liquid crystal near intersection in disclination region rotates, reduce the area in disclination region in the two domain structures of IPS or FFS, improve the display performance of two domain structures, improve light penetration rate in liquid crystal display.
Brief description of the drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the structural representation of two farmlands pixel region of existing liquid crystal display;
Fig. 2 is the disclination phenomenon of existing pair of farmland pixel region;
Fig. 3 is the schematic diagram that two farmlands pixel region is carried out to region division according to liquid crystal rotation situation;
Fig. 4 is the force analysis schematic diagram of the liquid crystal of the intersection in pixel region Zhong Lianggechou district, two farmland;
Fig. 5 is the force analysis schematic diagram that closes on the liquid crystal in intersection region, Liang Gechou district in the pixel region of two farmlands;
Fig. 6 is the schematic diagram of a kind of tft array substrate based on the two domain structures of FFS of first embodiment of the invention;
Fig. 7 A is the structural representation of the pixel region of a kind of tft array substrate of first embodiment of the invention;
Fig. 7 B is the structural representation of the pixel region of a kind of tft array substrate of first embodiment of the invention;
Fig. 8 is that the pixel region of first embodiment of the invention is along the schematic cross-section of B-B ' direction in Fig. 7 A;
Fig. 9 A is the structural representation of the pixel region of a kind of tft array substrate based on the two domain structures of IPS of second embodiment of the invention;
Fig. 9 B is the structural representation of the pixel region of a kind of tft array substrate based on the two domain structures of IPS of second embodiment of the invention;
Figure 10 is that the pixel region of second embodiment of the invention is along the schematic cross-section of B-B ' direction in Fig. 9 A;
Figure 11 is the structural representation of the pixel region after improving in the emulation experiment one based on the embodiment of the present invention;
Figure 12 is the simulation result figure of the liquid crystal display of the pixel region structure of prior art in the emulation experiment one of the embodiment of the present invention;
Figure 13 the present invention is the simulation result figure of the liquid crystal display of pixel regional structure after improving in the emulation experiment one of embodiment;
Figure 14 is the simulation result figure of the liquid crystal display of pixel regional structure after improving in the emulation experiment two of the embodiment of the present invention;
Figure 15 is the simulation result figure of the liquid crystal display of pixel regional structure after improving in the emulation experiment three of the embodiment of the present invention;
Figure 16 A is the simulation result figure of a kind of liquid crystal display that improves rear pixel regional structure in the emulation experiment four of the embodiment of the present invention;
Figure 16 B is the simulation result figure of a kind of liquid crystal display that improves rear pixel regional structure in the emulation experiment four of the embodiment of the present invention;
Figure 17 A is the simulation result figure of a kind of liquid crystal display that improves rear pixel regional structure in the emulation experiment five of the embodiment of the present invention;
Figure 17 B is the simulation result figure of a kind of liquid crystal display that improves rear pixel regional structure in the emulation experiment five of the embodiment of the present invention;
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not full content, and size and the size of shown structure in accompanying drawing, not actual or to the size of the proportional structure of reality.
Figure 3 illustrates the schematic diagram that two farmlands pixel region is carried out to region division according to liquid crystal rotation situation.As shown in Figure 3, according to the rotation situation of liquid crystal, two farmlands pixel region can be divided into Liang Gechou district intersection 31, close on region 32 and the normal district 33 of Liang Gechou district intersection.Be positioned at the liquid crystal of zones of different because of stressing conditions difference, thereby rotation situation is different.
Wherein, figure 4 illustrates the force analysis schematic diagram of the liquid crystal of pixel region Zhong Lianggechou district, two farmland intersection 31.With reference to Fig. 3 and Fig. 4, in Liang Gechou district intersection 31, the electric field that the first fold line electrode 41 of the pixel electrode in the pixel region of two farmlands forms with the second broken line electrode 42 is identical to the acting force of liquid crystal 43 in Y-direction in Fig. 3 or Fig. 4, but action direction is contrary, the liquid crystal that is therefore positioned at Liang Gechou district intersection can not rotate substantially.
Accordingly, figure 5 illustrates the force analysis schematic diagram of the liquid crystal that closes on intersection region, Liang Gechou district.With reference to Fig. 3 and Fig. 5, closing in the region 32 of Liang Gechou district intersection, although the electric field that the first fold line electrode 51 of the pixel electrode in the pixel region of two farmlands and the second broken line electrode 52 form is incomplete same to the acting force of liquid crystal 53 at the component of Y-direction, but very approaching in amount of force, after the acting force that the electric field that liquid crystal forms at first fold line electrode 51 and the second broken line electrode 52 herein produces at the component of Y-direction is cancelled out each other, be subject to make a concerted effort very a little less than, so be positioned at the also difficulty of liquid crystal rotation of closing on intersection region, Liang Gechou district, also there will be black area.
Accordingly, the liquid crystal of 33 tops that is positioned at normal district is mutually far short of what is expected at the acting force of the component of Y-direction because be subject to the electric field that two broken line electrodes form, and the liquid crystal that is therefore positioned at normal district can normally rotate.
Can find out, be arranged in the liquid crystal in the region 32 of closing on Liang Gechou district intersection, itself there is rotation trend, if the liquid crystal in region 32 is applied to a transverse electric field force again, the extra electric field component that forms a Y-direction, therefore the liquid crystal that is arranged in region 32 will easily rotate, and then can reach the effect that reduces disclination region area.
Based on such principle, the present invention has provided following examples.
The first embodiment
Fig. 6 is the schematic diagram of the tft array substrate based on the two domain structures of FFS of first embodiment of the invention.As shown in Figure 6, described tft array substrate comprises: substrate 61; Be positioned at multi-strip scanning line 62 and many data lines 63 on described substrate 61, described multi-strip scanning line 62 and described many data lines 63 intersect to form multiple pixel regions 64.
The structural representation of the pixel region of a kind of tft array substrate of first embodiment of the invention wherein, has been shown in Fig. 7 A.
In Fig. 7 A, illustrated a kind of in the time that the pixel electrode in pixel region and compensating electrode are regular strip electrode, the structural representation of the pixel region of tft array substrate.
As shown in Figure 7 A, each pixel region 64 comprises the multiple pixel electrodes 641 that are positioned at described pixel region 64, each pixel electrode 641 is the strip of bending and is intervally installed, and described pixel region 64 is divided into Liang Gechou district by the kink of described multiple pixel electrodes 641.
In the present embodiment, the kink of described multiple pixel electrodes 641 forms the junction 643 in described Liang Gechou district.
Described array base palte also comprises the public electrode (Fig. 7 A is not shown) being arranged on described substrate; Wherein, described public electrode and described multiple pixel electrode are electrically insulated by the first insulation course (not shown in Fig. 7 A), and described public electrode can form fringe field (Fringe Field Switching) with described pixel electrode.It should be noted that described public electrode can be the plane-shape electrode that covers pixel region, can be also and the identical strip shaped electric poles of pixel electrode 641 shapes that this is not limited;
Described array base palte also comprises the second insulation course (not shown in Fig. 7 A) being arranged on described multiple pixel electrode, described the second insulation course covers the top of described multiple pixel electrodes, and be arranged on the multiple compensating electrodes 642 on described the second insulation course and between described multiple pixel electrodes 641, wherein, between every two pixel electrodes 641, be provided with a compensating electrode 642, compensating electrode 642 is the strip of bending, and the bending part of described multiple compensating electrodes 642 is in the junction 643 in described Liang Gechou district.
In the present embodiment, by adding the new compensating electrode 642 of one deck in the tft array substrate of the two domain structures of original FFS, when after making alive on pixel electrode 641, compensating electrode 642 is because capacity effect can be responded to certain voltage, compensating electrode 642 so with pixel electrode 641 forming surface internal electric fields, a new transverse electric field force is provided, and the liquid crystal that makes to close in the region 644 of Liang Gechou district intersection 643 is more prone to rotate.
Certainly, it will be understood by those skilled in the art that, pixel electrode and compensating electrode are as long as being the strip of bending, pixel region 64 can be divided into Liang Gechou district, its shape is not limited to regular strip shaped electric poles, also can be zigzag strip shaped electric poles, or other be from macroscopic view the electrode that strip extends, can be interpreted as " strip " electrode of broad sense.
In Fig. 7 B, illustrated a kind of in the time that the pixel electrode in pixel region and compensating electrode are zigzag strip shaped electric poles, the structural representation of the pixel region of tft array substrate.As shown in Figure 7 B, pixel electrode 741 and compensating electrode 742 are serrate electrode.
Show the pixel region of first embodiment of the invention along the schematic cross-section of B-B ' direction in Fig. 7 A at Fig. 8.
In Fig. 8, as example, and non-limiting, described public electrode can be positioned under the layer of multiple pixel electrodes place, and this public electrode is plane-shape electrode.
As shown in Figure 8, this schematic cross-section comprises: glass substrate 81, planar public electrode 82, three pixel electrodes 84, two compensating electrodes 86, be deposited on the first insulation course 83 between planar public electrode 82 and pixel electrode 84 and be deposited on pixel electrode 84 and compensating electrode 86 between the second insulation course 85.
Wherein, pixel electrode 84, public electrode 82 and compensating electrode 86 can be transparency electrode, and described transparency electrode can be passed through the combination of indium tin oxide (ITO), indium-zinc oxide (IZO) or above-mentioned material, or other transparent conductive materials are manufactured.
In the present embodiment, as shown in Figure 8, between the width D 1 of compensating electrode 86 and the width D 2 of pixel electrode 84, proportionate relationship can arrange arbitrarily, and this is not limited, and alternatively, the width of compensating electrode 86 is 60%～100% of described pixel electrode 84 width.
In the present embodiment, as shown in Figure 8, compensating electrode 86 can equate to distance B 3 and the D4 of two adjacent pixel electrodes 84, also can be unequal, also be, described compensating electrode can be less than the distance of this compensating electrode to adjacent one other pixel electrode to the distance of an adjacent pixel electrode, and this is not limited.
In the present embodiment, described compensating electrode also can apply certain voltage, is OV voltage alternatively, also can be set to float (Floating), and this is not limited.
In an example, in described pixel region 64, also comprise: connect the trunk electrode (not shown in Fig. 7 A) of each compensating electrode 642 ends, wherein, described trunk electrode can be positioned at same layer with each compensating electrode 642.Described trunk electrode is electrical connected with public electrode 82 by the second insulation course 85 in Fig. 8 for example and the via hole (not shown in Fig. 8) in the first insulation course 83, accordingly, can apply 0V voltage to compensating electrode.
One of the present embodiment preferred embodiment in, the overbending direction of described compensating electrode 642 is identical with the overbending direction of described pixel electrode 641; The bending angle of described compensating electrode 642 is identical with the bending angle of described pixel electrode 641.In fact,, in order to ensure a good compensation effect, as long as the shape of described compensating electrode and the shape of described electrode are consistent, also in the time that described pixel electrode is regular strip shaped electric poles, described compensating electrode is also preferably regular strip; In the time that described pixel electrode is zigzag electrode, described compensating electrode is also preferably zigzag electrode, thereby can obtain a good compensation effect.
The present invention is by arranging the mode of a compensating electrode between every two pixel electrodes in the two domain structures of FFS, in the plane of pixel electrode and public electrode place substrate, form a plane electric fields, for liquid crystal molecule placed on it provides a new transverse electric field force, promoting the liquid crystal near intersection in disclination region rotates, reduce the area in disclination region in the two domain structures of FFS, improved the display performance of two domain structures, improved light penetration rate in liquid crystal display.
The second embodiment
In the present embodiment, tft array substrate is the array base palte based on the two domain structures of IPS, and wherein, the array base palte of the present embodiment comprises:
Substrate;
Be positioned at multi-strip scanning line and many data lines on described substrate, multiple pixel regions that described multi-strip scanning line and described many data lines intersection limit;
Wherein, in Fig. 9 A, illustrated second embodiment of the invention in the time that the pixel electrode in pixel region and compensating electrode are regular strip electrode, the structural representation of the pixel region of the array base palte based on the two domain structures of IPS.
As shown in Figure 9 A, each pixel region comprises:
Be positioned at multiple pixel electrodes 91 and multiple public electrode 92 of described pixel region, each pixel electrode 91 and each public electrode 92 are the strip of bending and are arranged in same layer, and the alternative arrangement setting of each interval, is used to form in-plane and changes electric field (In-Plane Switching).Described pixel region is divided into Liang Gechou district by the kink of described multiple pixel electrode 91 and described multiple public electrode 92;
Be arranged on the first insulation course (not shown in Fig. 9 A) on described multiple pixel electrode 91 and multiple public electrode 92;
Be arranged on the multiple compensating electrodes 93 on described the first insulation course and between adjacent pixel electrode 91 and public electrode 92, wherein, between every two adjacent pixel electrodes 91 and public electrode 92, be provided with a compensating electrode 93, described compensating electrode 93 is the strip of bending, and the bending part of described multiple compensating electrodes 93 is in the junction in described Liang Gechou district.
" strip " described in the present embodiment electrode is also as made broad understanding in embodiment mono-.Accordingly, in Fig. 9 B, illustrated second embodiment of the invention in the time that the pixel electrode in pixel region and compensating electrode are zigzag strip shaped electric poles, the structural representation of the pixel region of the array base palte based on the two domain structures of IPS.Particularly can be with reference to embodiment mono-for the understanding of " strip " electrode.
Show pixel region in the second embodiment of the invention schematic cross-section along B-B ' in Fig. 9 A at Figure 10.As shown in figure 10, this schematic cross-section comprises: glass substrate 161, pixel electrode 162, public electrode 163, compensating electrode 164, be deposited on the first insulation course 165 between pixel electrode 162, public electrode 163 and compensating electrode 164.
The present invention is by arranging the mode of a compensating electrode between every two the adjacent pixel electrodes in the two domain structures of IPS and public electrode, in the plane of pixel electrode and public electrode place substrate, additionally form a plane electric fields by compensating electrode, for liquid crystal molecule placed on it provides a new transverse electric field force, promoting the liquid crystal near intersection (with reference to 32 regions in figure 3) in disclination region rotates, reduce the area in disclination region in the two domain structures of IPS, improve the display performance of two domain structures, improve light penetration rate in liquid crystal display.
On the basis of technique scheme, preferred, the overbending direction of described compensating electrode is identical with the overbending direction of described pixel electrode and described public electrode; The bending angle of described compensating electrode is identical with the bending angle of described pixel electrode and described public electrode.In fact, the shape of described compensating electrode is preferably consistent with the shape of described pixel electrode.
On the basis of above-mentioned each technical scheme, in described pixel region, also comprise: connect the trunk electrode of compensating electrode end described in each, described trunk electrode can be electrical connected by the via hole of described the first insulation course and described public electrode.
The benefit arranging is like this, after by trunk electrode, each compensating electrode and public electrode being electrical connected, can provide for each compensating electrode the voltage of OV.
On the basis of above-mentioned each technical scheme, described in each, compensating electrode voltage can be set to float.
On the basis of above-mentioned each technical scheme, preferred, the width of described compensating electrode is 60%～100% of described pixel electrode width.
The benefit arranging is like this, by the proportionate relationship of compensating electrode and pixel electrode width is limited, in ensureing industrial easy production, to select optimum proportionate relationship to improve the improvement degree to disclination phenomenon.
On the basis of above-mentioned each technical scheme, described compensating electrode can equate to the distance of adjacent pixel electrode and public electrode, also can be unequal.
Accordingly, the embodiment of the present invention also provides a kind of display panels, comprise tft array substrate described in the various embodiments described above, and the color membrane substrates that is oppositely arranged of described tft array substrate and be clipped in described tft array substrate and described color membrane substrates between liquid crystal layer.
The display panels that the present embodiment provides, by increase the mode of compensating electrode in the tft array substrate of the two domain structures of FFS or the two domain structures of IPS, can be in the plane of pixel electrode and public electrode place substrate, form a plane electric fields, for liquid crystal molecule placed on it provides a new transverse electric field force, promoting the liquid crystal near intersection in disclination region rotates, and then reduce the area in the disclination region in display panels, improve the display performance of two domain structures, improved light penetration rate in liquid crystal display.
Accordingly, the embodiment of the present invention also provides a kind of liquid crystal display, comprises the display panels described in various embodiments of the present invention.Also can be further as required, described liquid crystal display comprises back light unit, in order to provide light source to described display panel, or comprises miscellaneous part, does not enumerate at this.
In the pixel region structure of first embodiment of the invention and the second embodiment proposition, the parameter that can arrange comprises: width, the compensating electrode of compensating electrode arrive the distance (FFS structure) between two adjacent pixel electrodes, or compensating electrode is executed alive situation on the distance (IPS structure) between adjacent pixel electrode and public electrode and compensating electrode.For above-mentioned variable element, carry out following emulation experiment:
Wherein, for the array base palte that the embodiment of the present invention is provided is more practical in commercial production, in this emulation experiment, first the pixel region structure of existing pair of domain structure is improved:
Two domain structures based on FFS: before improvement, the width W idth1=3.75um of pixel electrode, the interval Slit=3.25um between two adjacent pixel electrodes, after improvement, pixel electrodes width adjustment is Width1=3um, and pixel electrodes interval is adjusted into Slit=4um;
Two domain structures based on IPS: before improvement, the width W idth1=3.75um of electrode (pixel electrode and public electrode), interval Slit=3.25um between two adjacent electrodes (pixel electrode and public electrode), after improvement, above-mentioned electrode width is adjusted into Width1=3um, and above-mentioned electrode gap is adjusted into Slit=4um;
Above-mentioned improvement is equivalent to, in the situation that pixel region size is constant, increase the interval between two adjacent electrodes.On electrode after improvement, deposit the first insulation course, on the first insulation course, be positioned on the position at two adjacent electrode intervals compensating electrode is set.
Emulation experiment one
In emulation experiment one, the parameter setting of pixel region comprises: the width W idth2=2um of compensating electrode, the distance of adjacent two electrodes of compensating electrode distance is identical, is also Slit1=Slit2=1um.In addition, compensating electrode is set to float.Figure 11 illustrates the schematic diagram of structure after above-mentioned improvement.As shown in figure 11, the width W idth2 that width W idth1, the W2 that W1 is electrode is compensating electrode, compensating electrode is respectively S1 and S2 to the distance of adjacent two electrodes.
Show the simulation result figure of the liquid crystal display of the pixel region structure of prior art in emulation experiment one at Figure 12; Figure 13 illustrates the simulation result figure that improves the liquid crystal display of rear pixel regional structure in emulation experiment one.
By simulation result is calculated: the disclination region area S=33.4um corresponding to pixel region structure of prior art
2, disclination region area S=21.0um corresponding to pixel region structure after improving in emulation experiment one
2.Can significantly observe, improve pixel region structure after disclination black area obviously reduce than disclination of the prior art region.
Wherein, in table 1, illustrate apply different voltage on pixel electrode time, used the light penetration rate and the contrast table that uses the light penetration rate of the pixel region structure of improvement in emulation experiment one of the pixel region structure of prior art.
Table 1
As shown in table 1, when the voltage on pixel electrode is greater than after 4V, in emulation experiment one light penetration rate be greater than the light penetration rate of prior art, therefore, by apply suitable magnitude of voltage on pixel electrode, use the pixel region structure in this emulation experiment in significantly reducing disclination peak width, to strengthen light penetration rate.Wherein, when the voltage on pixel electrode is configured to 5V, emulation experiment one obtains maximum light penetration rate.
Emulation experiment two
This experiment, on the basis of emulation experiment one, is preferably further improved as " compensating electrode is set to 0V " by feature " compensating electrode is set to float ", and other conditions are constant.
Also: the width W idth2=2um of compensating electrode, the distance of two adjacent electrodes of this compensating electrode distance is identical, Slit1=Slit2=1um.
Figure 14 illustrates the simulation result figure that improves the liquid crystal display of rear pixel regional structure in emulation experiment two.
By simulation result is calculated: the disclination region area in emulation experiment two is 18.1um
2, by with Figure 13 in the emulation experiment simulation result figure contrast of changing the liquid crystal display of the pixel region structure of dealing with problems arising from an accident find out: compensating electrode is set to 0V and the improvement situation of disclination phenomenon is better than to compensating electrode is set to float.
Wherein, in table 2, illustrate configure different voltage on pixel electrode time, used the light penetration rate and the contrast table that uses the light penetration rate of the pixel region structure of improvement in emulation experiment one of the pixel region structure of improving in emulation experiment two.
As shown in table 2, when the voltage on pixel electrode is less than 5V, the LCD penetration of emulation experiment two is less than the light penetration rate of emulation experiment one; When voltage on pixel electrode is more than or equal to 5V, the light penetration rate of emulation experiment two is greater than the light penetration rate of emulation experiment one.Wherein, when the voltage on pixel electrode is configured to 5V, emulation experiment two obtains maximum light penetration rate.
Table 2
Emulation experiment three
Emulation experiment three is on the basis of emulation experiment two, preferably feature " the width W idth2=2um of compensating electrode " is improved as to " the width W idth2=3um of compensating electrode ", other conditions are constant, also: the distance of adjacent two electrodes of this compensating electrode distance is identical, Slit1=Slit2=0.5um, compensating electrode is set to 0V.
Figure 15 illustrates the simulation result figure that improves the liquid crystal display of rear pixel regional structure in emulation experiment three.
By simulation result is calculated: the disclination region area of this emulation experiment is 19.2um
2.By with Figure 14 emulation experiment two in improve after the simulation result figure contrast of liquid crystal display of pixel regional structure find out: when compensating electrode width W idth2=2um, the improvement situation of disclination phenomenon is better than to compensating electrode width W idth2=3um.Certainly,, when compensating electrode width W idth2=3um, can make equally disclination of the prior art black area obviously reduce.
Wherein, in table 3, illustrate configure different voltage on pixel electrode time, used the light penetration rate and the contrast table that uses the light penetration rate of the pixel region structure of improvement in emulation experiment two of the pixel region structure of improving in emulation experiment three.
As shown in table 3, when the voltage on pixel electrode is less than 5V, the LCD penetration in emulation experiment three is more than or equal to the light penetration rate in emulation experiment two; When voltage on pixel electrode is more than or equal to 5V, the light penetration rate that emulation experiment is three kinds is less than the light penetration rate in emulation experiment two.
Wherein, when the voltage on pixel electrode is configured to 5V, emulation experiment three can obtain maximum light penetration rate.
Table 3
Emulation experiment four
Emulation experiment four is on the basis of emulation experiment two, preferably feature " distance of adjacent two electrodes of this compensating electrode distance is identical " is improved as to " distance of the left side electrode that this compensating electrode distance is adjacent is less than the distance of adjacent the right electrode ", other conditions are constant, also: the width W idth2=2um of compensating electrode, compensating electrode is set to 0V.
One of emulation experiment four preferred embodiment in, Slit1=0.5um, Slit2=1.5um; Emulation experiment four another preferred embodiment in, Slit1=0um, Slit2=2um.
Slit2=1.5um, the simulation result figure of the liquid crystal display of pixel regional structure after improving have been shown in emulation experiment four based on Slit1=0.5um in Figure 16 A.
Slit2=2um, the simulation result figure of the liquid crystal display of pixel regional structure after improving have been shown in emulation experiment four based on Slit1=0um in Figure 16 B.
By simulation result is calculated: work as Slit1=0.5um, when Slit2=1.5um, the disclination region area of emulation experiment four is 18.9m
2; Work as Slit1=0um, when Slit2=2um, the disclination region area of emulation experiment four is 20.1m
2.By with Figure 14 emulation experiment two in improve after the simulation result figure contrast of liquid crystal display of pixel regional structure find out: Slit1=Slit2=1um is better than Slit1=0.5um to the improvement situation of disclination phenomenon, Slit2=1.5um or Slit1=0um, Slit2=2um.Certainly, Slit1=0.5um, Slit2=1.5um or Slit1=0um, when Slit2=2um, can make disclination of the prior art black area obviously reduce equally.
Wherein, in table 4, illustrate configure different voltage on pixel electrode time, used the light penetration rate and the contrast table that uses the light penetration rate of the pixel region structure of improvement in emulation experiment two of the pixel region structure of improving in emulation experiment four.
As shown in table 4, emulation experiment four is at Slit1=0.5um, light penetration rate when Slit2=1.5um is better than the light penetration rate of Slit1=Slit2=1um in emulation experiment two, in emulation experiment two, the light penetration rate of Slit1=Slit2=1um is better than emulation experiment four at Slit1=0um, light penetration rate when Slit2=2um.Wherein, when the voltage on pixel electrode is configured to 5V, emulation experiment four can obtain maximum light penetration rate.
Table 4
Emulation experiment five
Emulation experiment five is on the basis of emulation experiment two, preferably feature " distance of adjacent two electrodes of this compensating electrode distance is identical " is improved as to " distance of the right electrode that this compensating electrode distance is adjacent is less than the distance of adjacent left side electrode ", other conditions are constant, also: the width W idth2=2um of compensating electrode, compensating electrode is set to 0V.
One of emulation experiment five preferred embodiment in, Slit1=1.5um, Slit2=0.5um; Emulation experiment five another preferred embodiment in, Slit1=2um, Slit2=0um.
Slit2=0.5um, the simulation result figure of the liquid crystal display of pixel regional structure after improving have been shown in emulation experiment five based on Slit1=1.5um in Figure 17 A.
Slit2=0um, the simulation result figure of the liquid crystal display of pixel regional structure after improving have been shown in emulation experiment five based on Slit1=2um in Figure 17 B.
By simulation result is calculated: work as Slit1=1.5um, when Slit2=0.5um, the disclination region area of emulation experiment five is 18.0m
2, working as Slit1=2um, when Slit2=0um, the disclination region area of emulation experiment five is 18.3m
2.By with Figure 14 emulation experiment two in improve after the simulation result figure contrast of liquid crystal display of pixel regional structure find out: Slit1=1.5um, Slit2=0.5um is better than Slit1=Slit2=1um to the improvement situation of disclination phenomenon; Slit1=2um, Slit2=0um will be worse than Slit1=Slit2=1um to the improvement situation of disclination phenomenon.Certainly, Slit1=1.5um, Slit2=0.5um or Slit1=2um, when Slit2=0um, can make disclination of the prior art black area obviously reduce equally.
Wherein, in table 5, illustrate configure different voltage on pixel electrode time, used the light penetration rate and the contrast table that uses the light penetration rate of the pixel region structure of improvement in emulation experiment two of the pixel region structure of improving in emulation experiment five.
Table 5
As shown in table 5, in the time that the voltage on pixel electrode is less than or equal to 5V, the light penetration rate of emulation experiment five is better than the light penetration rate of emulation experiment two, in addition, the Slit1=1.5um of emulation experiment five, Slit2=0.5um, is better than the Slit1=2um of emulation experiment five, Slit2=0um to the improvement situation of disclination phenomenon.Wherein, when the voltage on pixel electrode is configured to 5V, emulation experiment five can obtain maximum light penetration rate.
Can find out by above-mentioned emulation experiment, as long as by the mode of a compensating electrode is set between every two pixel electrodes in the two domain structures of FFS, or the mode of a compensating electrode is set between every two the adjacent pixel electrodes in the two domain structures of IPS and public electrode, the no matter width of compensating electrode, compensating electrode is to the distance between two adjacent electrodes or on compensating electrode, execute alive situation and how to arrange, all can reach the area that reduces disclination region in IPS or the two domain structures of FFS, improve the display performance of two domain structures, improve the technique effect of light penetration rate in liquid crystal display.
Wherein, OV voltage will be applied on compensating electrode, during by being less than distance that pixel electrode (or public electrode) width and compensating electrode be set to the right electrode that distance is adjacent and being less than the distance of adjacent left side electrode of the width setting of compensating electrode, can obtain the improvement degree of more excellent disclination phenomenon and higher light penetration rate.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various changes and variation.All any amendments of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included within spirit of the present invention and principle.
Claims (16)
1. a tft array substrate, is characterized in that, comprising:
Substrate;
Be positioned at multi-strip scanning line and many data lines on described substrate, multiple pixel regions that described multi-strip scanning line and described many data lines intersection limit;
The multiple pixel electrodes that are positioned at described pixel region, each pixel electrode is the strip of bending and is intervally installed, and described pixel region is divided into Liang Gechou district by the kink of described multiple pixel electrodes;
Be positioned at the public electrode on described substrate; Wherein, described public electrode and described multiple pixel electrode are electrically insulated by the first insulation course;
Be arranged on the second insulation course on described multiple pixel electrode;
Be arranged on the multiple compensating electrodes on described the second insulation course and between described multiple pixel electrodes, wherein, between every two pixel electrodes, be provided with a compensating electrode, described compensating electrode is the strip of bending, and the bending part of described multiple compensating electrodes is in the junction in described Liang Gechou district.
2. tft array substrate according to claim 1, is characterized in that, the overbending direction of described compensating electrode is identical with the overbending direction of described pixel electrode; The bending angle of described compensating electrode is identical with the bending angle of described pixel electrode.
3. tft array substrate according to claim 1, it is characterized in that, in described pixel region, also comprise: connect the trunk electrode of compensating electrode end described in each, described trunk electrode is electrical connected by via hole and described public electrode in described the first insulation course and described the second insulation course.
4. tft array substrate according to claim 1, is characterized in that, described in each, compensating electrode voltage is set to float.
5. tft array substrate according to claim 1, is characterized in that, the width of described compensating electrode is 60%～100% of described pixel electrode width.
6. tft array substrate according to claim 1, is characterized in that, described compensating electrode equates to the distance of two adjacent pixel electrodes.
7. tft array substrate according to claim 1, is characterized in that, described compensating electrode is less than the distance of this compensating electrode to adjacent one other pixel electrode to the distance of an adjacent pixel electrode.
8. a tft array substrate, is characterized in that, comprising:
Substrate;
Be positioned at multi-strip scanning line and many data lines on described substrate, multiple pixel regions that described multi-strip scanning line and described many data lines intersection limit;
Be positioned at multiple pixel electrodes and multiple public electrode of described pixel region, each pixel electrode and each public electrode are the strip of bending and are arranged in same layer, and the alternative arrangement setting of each interval, described pixel region is divided into Liang Gechou district by the kink of described multiple pixel electrodes and described multiple public electrodes;
Be arranged on the first insulation course on described multiple pixel electrode and multiple public electrode;
Be arranged on the multiple compensating electrodes on described the first insulation course and between adjacent pixel electrode and public electrode, wherein, between every two adjacent pixel electrodes and public electrode, be provided with a compensating electrode, described compensating electrode is the strip of bending, and the bending part of described multiple compensating electrodes is in the junction in described Liang Gechou district.
9. tft array substrate according to claim 8, is characterized in that, the overbending direction of described compensating electrode is identical with the overbending direction of described pixel electrode and described public electrode; The bending angle of described compensating electrode is identical with the bending angle of described pixel electrode and described public electrode.
10. tft array substrate according to claim 8, it is characterized in that, in described pixel region, also comprise: connect the trunk electrode of compensating electrode end described in each, described trunk electrode is electrical connected by via hole and the described public electrode of described the first insulation course.
11. tft array substrates according to claim 8, is characterized in that, described in each, compensating electrode voltage is set to float.
12. tft array substrates according to claim 8, is characterized in that, the width of described compensating electrode is 60%～100% of described pixel electrode width.
13. tft array substrates according to claim 8, is characterized in that, described compensating electrode equates to the distance of adjacent pixel electrode and public electrode.
14. tft array substrates according to claim 8, is characterized in that, described compensating electrode is unequal to the distance of adjacent pixel electrode and public electrode.
15. 1 kinds of display panels, comprise tft array substrate as described in as arbitrary in claim 1-14, and as described in the color membrane substrates that is oppositely arranged of tft array substrate and be clipped in as described in tft array substrate and as described in liquid crystal layer between color membrane substrates.
16. 1 kinds of liquid crystal display, comprise display panels as claimed in claim 15.
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