CN101477279B - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
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- CN101477279B CN101477279B CN2009100096821A CN200910009682A CN101477279B CN 101477279 B CN101477279 B CN 101477279B CN 2009100096821 A CN2009100096821 A CN 2009100096821A CN 200910009682 A CN200910009682 A CN 200910009682A CN 101477279 B CN101477279 B CN 101477279B
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Abstract
The invention relates to a liquid crystal display panel. The liquid crystal display panel comprises a first substrate, a second substrate arranged in the opposite direction of the first substrate and a liquid crystal layer arranged between the first substrate and the second substrate. The first substrate comprises a pixel electrode and a first common electrode. The pixel electrode comprises a plurality of first node protrudent parts; and the first common electrode comprises a plurality of second node protrudent parts in alternate arrangement with the first node protrudent parts. The second substrate comprises a second common electrode corresponding to the first common electrode. The second common electrode comprises a plurality of third node protrudent parts corresponding to the plurality of the second node protrudent parts. The liquid crystal display panel can increase the light transmission and reduce critical voltage, thereby remarkably promoting the display property of the panel.
Description
Technical field
The present invention relates to a kind of display device, relate in particular to display panels.
Background technology
LCD has been widely used in the electronic product of tool growth potentiality such as monitor, notebook computer, digital camera and projector now owing to have advantages such as slimming, in light weight, low power consumption and low radiation.
In the display panels of traditional STN type, pixel electrode is positioned on the infrabasal plate, and common electrode then is positioned at the inner surface of upper substrate, thus its angle that drives liquid crystal rotation mainly towards vertically to, and the narrow shortcoming in visual angle is arranged, be unfavorable for the application of large size panel.
In recent years, (In-Plane Switching, IPS) display panels is pushed out to have the plane conversion type of wide viewing angle characteristic.With reference to Fig. 1, IPS display panels 10 comprises infrabasal plate 11 and upper substrate 12, and pixel electrode 13 and common electrode 14 all are positioned on the infrabasal plate 11, and with the interlaced arrangement of the mode of comb poles.IPS display panels 10 is because lateral electric field type has been adopted in the placement of electric field, and the rotation of part liquid crystal molecule roughly becomes horizontal direction, and the narrow visual angle problem that does not see Chu because of angular transformation is solved, and has the characteristic of described wide viewing angle.
Though the IPS display panels has the advantage of wide viewing angle, yet also because take the design of transverse electric field, the electric field of pixel electrode 13 and 14 generations of common electrode is not sufficient to drive the liquid crystal molecule rotation that is positioned at pixel electrode 13 and common electrode 14 tops, thereby reduces its penetrance.
Summary of the invention
For addressing the above problem, the invention provides a kind of display panels, via the improvement of electrode shape, except that the light transmittance that can increase display panels, also can reduce critical voltage, and significantly promote the display characteristic of panel.
According to the present invention, a display panels comprises that one first substrate, is located at second substrate and of this first substrate subtend and is located at liquid crystal layer between this first and second substrate.First substrate comprises a pixel electrode and one first common electrode.Pixel electrode comprises a plurality of first node teats, and this first common electrode comprises a plurality of and the staggered Section Point teat of first node teat.Second substrate comprises second common electrode corresponding to this first common electrode.Second common electrode comprises the 3rd node teat of the described a plurality of Section Point teats of a plurality of correspondences.
Among one embodiment, this pixel electrode, first common electrode and second common electrode are the comb poles structures, and described a plurality of first node teat, Section Point teat and the 3rd node teat are contained in separately the electrode branches.The a pair of projection that each node teat comprises electrode part and protrudes in electrode part.The projection of the projection of adjacent pixel electrodes and first common electrode or second common electrode is that dislocation is arranged.
Node teat of the present invention comprises the shape that circle or polygon such as sexangle, rhombus etc. are different.
Of the present invention one changes in the example, second substrate also comprise one with the staggered floating electrode of this second common electrode, according to the pixel electrode of depression angle floating electrode corresponding to first substrate.
The present invention both can increase the light transmittance of display panels, can reduce its critical voltage again, thereby significantly promoted the display characteristic of panel.
Description of drawings
Fig. 1 is known IPS structure of liquid crystal display panel synoptic diagram.
Fig. 2 illustrates the last TV structure of the display panels of one embodiment of the invention.
Fig. 3 is the cross-sectional view of Fig. 2 along the 1-1 profile line.
Fig. 4 is the decomposing schematic representation according to depression angle of the display panels of one embodiment of the invention.
Fig. 5 and Fig. 6 are the pixel electrode of display panels of one embodiment of the invention and the arrangement synoptic diagram of common electrode.
Fig. 7 is the penetrance distribution schematic diagram of the display panels of one embodiment of the invention.
Fig. 8 is the cross-sectional view of the display panels of another embodiment of the present invention.
Fig. 9 is the synoptic diagram that concerns of the voltage of display panels of one embodiment of the invention and penetrance.
Figure 10 and Figure 11 illustrate the pixel electrode of display panels of other embodiments of the invention and the arrangement synoptic diagram of common electrode.
Wherein, description of reference numerals is as follows:
10 display panels, 11 infrabasal plates
12 upper substrates, 13 pixel electrodes
14 common electrodes
20 display panels, 22 sweep traces
23 data lines, 24 thin film transistor (TFT)s
25 pixel electrodes, 26 sweep traces
27 first common electrodes, 28 second common electrodes
29 common electrode wire, 30 first substrates
31 second substrates, 32 insulation courses
35 floating electrodes, 40 liquid crystal layers
251 first electrode branches, 252 first node teats
253 connecting portions, 254 first electrode part
255 first projections
271 second electrode branches, 272 Section Point teats
273 first electrode wires, 274 second electrode part
255 second projections
281 third electrode branches 282 the 3rd node teat
283 second electrode wires, 284 third electrode portions
285 the 3rd projections
Embodiment
Below go through the making and the use of this present preferred embodiment.But, should be appreciated that to the invention provides many applicable inventive concepts that it can be implemented under various concrete conditions.The specific embodiment of this discussion has only illustrated the concrete mode of making and use this invention, does not limit the scope of the invention.
Fig. 2 illustrates the vertical view of the display panels of one embodiment of the invention, and Fig. 3 is the sectional view of Fig. 2 along the 1-1 profile line.Display panels 20 comprises one first substrate 30, one second substrate 31 and a liquid crystal layer 40.First substrate 30 and the 31 subtend settings of second substrate, liquid crystal layer 40 is between this first substrate 30 and second substrate 31.In the pixel cell of display panels 20, sweep trace (or claiming gate line) 22 and data line 23 are respectively at laterally reaching the connection that vertically interweaves.Data line 23 connects pixel electrode 25 via thin film transistor (TFT) 24, and sweep trace 22 also connects thin film transistor (TFT) 24, to control the conducting of this thin film transistor (TFT) 24.Said elements is arranged at usually on first substrate 30 (for example thin-film transistor array base-plate) and is covered with an insulation course 32, covers said elements, and colored filter and black matrix" etc. is arranged at second substrate 31 (for example colorful optical filter array substrate) usually.
With reference to Fig. 4, according to depression angle, display panels 20 is equivalent to the pixel electrode 25 and first common electrode 27 on first substrate 30, with the stack of second common electrode 28 on second substrate 31.In specific words, this pixel electrode 25 comprises a plurality of first electrode branches 251, for example extend longitudinally, and each this first electrode branches 251 has a plurality of first node teats 252.This pixel electrode 25 can also comprise a junction 253, connects described a plurality of first electrode branches 251.First common electrode 27 comprises a plurality of second electrode branches 271, for example extend longitudinally, and each this second electrode branches 271 has a plurality of Section Point teats 272.First common electrode 27 can also comprise one first electrode wires 273, connects described a plurality of second electrode branches 271 of adjacent pixel unit.Second common electrode 28 comprises a plurality of third electrode branch 281, for example extend longitudinally, and each this third electrode branch 281 has a plurality of the 3rd node teats 282.Second common electrode 28 can comprise one second electrode wires 283 in addition, connects the described a plurality of third electrode branch 281 of adjacent pixel unit.
As above-mentioned, with regard to partial structurtes, the present invention is made into the form that comprises the node teat with pixel electrode 25, first common electrode 27 and second common electrode 28.Fig. 5 illustrates the ordered state according to second electrode branches 271 of first electrode branches 251 of the pixel electrode 25 of depression angle and first common electrode 27, and wherein first node teat 252 and Section Point teat 272 are to be staggered.This first node teat 252 a pair of first projection 255 of comprising one first electrode part 254 and protruding in first electrode part 254 respectively; This Section Point teat 272 a pair of second projection 275 of comprising one second electrode part 274 and protruding in second electrode part 274 respectively.First projection 255 of adjacent first node teat 252 and Section Point teat 272 and second projection 275 are that dislocation is arranged.
Fig. 6 illustrates the ordered state according to the third electrode branch 281 of first electrode branches 251 of the pixel electrode of depression angle and second common electrode 28.Cause second common electrode 28 is corresponding to first common electrode 27, and arrangement and Fig. 5 of Fig. 6 are similar.The 3rd node teat 282 a pair of the 3rd projection 285 that comprises a third electrode portion 284 and protrude in third electrode portion 284 respectively.First projection 255 and the 3rd projection 285 according to adjacent first node teat 252 of depression angle and the 3rd node teat 282 are that dislocation is arranged.
Node teat in the present embodiment is to be example with the sexangle, and because of the relation of dislocation, the sexangle end face of first projection 255 of adjacent first node teat 252 and Section Point teat 272 and the sexangle end face of second projection 275 are not directly faced.Similarly, the sexangle end face of the sexangle end face of first projection 255 of adjacent first node teat 252 and the 3rd node teat 272 and the 3rd projection 285 is not directly faced yet.
The electrode branches of IPS display panels traditionally is a strip and do not have the setting of node teat, so electric field only is the single direction of level between its pixel electrode and common electrode.The present invention staggers because of the position of first projection 255 and second projection 275 and the 3rd projection 285, and therefore first projection 255 and second projection 275 and 285 of the 3rd projections can produce oblique electric field, make that the liquid crystal of relevant position is turned to, and can increase light transmittance.
Fig. 7 is the penetrance and the Electric Field Distribution synoptic diagram of display panels 20.The foregoing description is because of the upper and lower common electrode 27,28 that is equipped with, therefore will produce transverse electric field at pixel electrode 25 and 27 of first common electrodes, and pixel electrode 25 and 28 of second common electrodes will produce oblique electric field, and wherein transverse electric field and oblique electric field direction are as shown by arrows.Compared to the IPS structure of liquid crystal display panel, because of second common electrodes 28 that increase on second substrate 31 in the present embodiment more, to additionally produce oblique electric field, and the liquid crystal that can drive relative position rotates towards the oblique electric field direction, and can increase the penetrance of display panels.
In addition, Fig. 8 shows the diagrammatic cross-section of the display panels of another alternate embodiment of the present invention.Compared to that shown in Figure 3, second embodiment of Fig. 8 is that the position corresponding to pixel electrode 25 is provided with floating electrode 35 in addition on second substrate 31.Because of floating electrode 35 can have voltage because of coupling effect, itself and 25 at respective pixel electrode can produce voltage difference, further promote the penetrance of display panels.Among one embodiment, the shape of this floating electrode 35 is identical with the shape of this pixel electrode 25, and according to this floating electrode 35 of depression angle corresponding to this pixel electrode 25, and be staggered with this second common electrode 28.
Fig. 9 is the penetrance and the driving voltage graph of a relation of known IPS display panels and display panels of the present invention.As shown in Figure 9, the initial critical voltage of display panels of the present invention is lower, so can have lower operating voltage.And under same driving voltage, display panels of the present invention has the higher penetrating rate compared to the IPS panel.Therefore, the present invention makes display panels have higher light transmittance via the improvement of electrode shape, also has the low operating voltage characteristic, and possesses the function of wide viewing angle simultaneously.
In the practical operation, the shape of first node teat 252 of the present invention, Section Point teat 272 and the 3rd node teat 282 can comprise polygon such as irregular quadrilateral or circle etc.For example, except that aforesaid sexangle, also comprise rhombus or circle.Because of first common electrode 27 is upper and lower corresponding settings with second common electrode 28, identical according to its relative position of depression angle with pixel electrode 25, therefore only with pixel electrode 25 and 27 representatives of first common electrode, the Section Point teat 272 that the first node teat 252 of first electrode branches 251 of rhombus and circle and second electrode branches 271 are shown respectively is as Figure 10 and shown in Figure 11.
Technology contents of the present invention and technical characterstic are open as above, yet those of ordinary skills still may reach openly and do all replacement and modifications that does not deviate from spirit of the present invention based on teaching of the present invention.Therefore, protection scope of the present invention should be not limited to the disclosed person of embodiment, and should comprise various do not deviate from replacement of the present invention and modifications, and is contained by the protection domain of appended claim.
Claims (24)
1. display panels comprises:
One first substrate comprises:
One pixel electrode comprises a plurality of first node teats; And
One first common electrode comprises a plurality of Section Point teats, and described first node teat and described Section Point teat are to be staggered;
One second substrate is located at this first substrate subtend, comprises:
One second common electrode, corresponding to this first common electrode, this second common electrode comprises a plurality of the 3rd node teats, corresponding described a plurality of Section Point teats; And
One liquid crystal layer is located between this first and second substrate.
2. display panels as claimed in claim 1, wherein this pixel electrode comprises a plurality of first electrode branches, extend along a first direction, and each described first electrode branches has described a plurality of first node teat.
3. display panels as claimed in claim 2, wherein this pixel electrode comprises a junction, connects described a plurality of first electrode branches.
4. display panels as claimed in claim 2, wherein this first common electrode comprises a plurality of second electrode branches, extend along this first direction, and each this second electrode branches has described a plurality of Section Point teat.
5. display panels as claimed in claim 4, wherein this first common electrode comprises one first electrode wires, connects described a plurality of second electrode branches.
6. display panels as claimed in claim 4, wherein this second common electrode comprises a plurality of third electrode branch, extend along this first direction, and each described third electrode branch has described a plurality of the 3rd node teat.
7. display panels as claimed in claim 6, wherein this second common electrode comprises one second electrode wires, connects described a plurality of third electrode branch.
8. display panels as claimed in claim 1 is to be staggered according to described the 3rd node teat of depression angle and described first node teat wherein.
9. display panels as claimed in claim 1, wherein each described first node teat comprises one first electrode part, and a pair of first projection that protrudes in first electrode part, each described Section Point teat comprises one second electrode part, and a pair of second projection that protrudes in second electrode part.
10. display panels as claimed in claim 9, first projection of wherein adjacent first node teat and second projection of Section Point teat are that dislocation is arranged.
11. display panels as claimed in claim 9, the shape of wherein said first node teat and described Section Point teat comprises polygon.
12. display panels as claimed in claim 9, the shape of wherein said first node teat and described Section Point teat comprises sexangle.
13. as the display panels of claim 12, the sexangle end face of the sexangle end face of first projection of wherein adjacent first node teat and second projection of Section Point teat is not directly faced.
14. display panels as claimed in claim 9, the shape of wherein said first node teat and described Section Point teat comprises rhombus.
15. display panels as claimed in claim 9, the shape of wherein said first node teat and described Section Point teat comprises circle.
16. display panels as claimed in claim 9, wherein each described the 3rd node teat comprises a third electrode portion, and a pair of the 3rd projection that protrudes in third electrode portion.
17., be that dislocation is arranged wherein according to first projection of the adjacent first node teat of depression angle and the 3rd projection of the 3rd node teat as the display panels of claim 16.
18. as the display panels of claim 16, wherein this first node teat and the 3rd node teat comprise sexangle.
19., wherein directly do not face according to the sexangle end face of the 3rd projection of the sexangle end face of first projection of the adjacent first node teat of depression angle and the 3rd node teat as the display panels of claim 18.
20. as the display panels of claim 16, the shape of wherein said the 3rd node teat comprises rhombus.
21. as the display panels of claim 16, the shape of wherein said the 3rd node teat comprises circle.
22. display panels as claimed in claim 1, wherein this second substrate also comprise one with the staggered floating electrode of this second common electrode.
23. as the display panels of claim 22, wherein according to this floating electrode of depression angle corresponding to this pixel electrode.
24. as the display panels of claim 22, wherein the shape of this floating electrode is identical with the shape of this pixel electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100096821A CN101477279B (en) | 2009-02-04 | 2009-02-04 | Liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100096821A CN101477279B (en) | 2009-02-04 | 2009-02-04 | Liquid crystal display panel |
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| Publication Number | Publication Date |
|---|---|
| CN101477279A CN101477279A (en) | 2009-07-08 |
| CN101477279B true CN101477279B (en) | 2010-07-28 |
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| CN2009100096821A Active CN101477279B (en) | 2009-02-04 | 2009-02-04 | Liquid crystal display panel |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529606B (en) * | 2013-10-29 | 2017-08-29 | 京东方科技集团股份有限公司 | A kind of liquid crystal display panel and display device |
| CN103529607B (en) * | 2013-10-29 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of liquid crystal display panel, display device and its driving method |
| US20160147117A1 (en) * | 2014-11-24 | 2016-05-26 | Au Optronics Corporation | Pixel structures for liquid crystal display device |
| CN104898331A (en) * | 2015-06-15 | 2015-09-09 | 武汉华星光电技术有限公司 | Liquid crystal display and liquid crystal display panel in homeotropic alignment mode |
| TWI674463B (en) * | 2018-07-19 | 2019-10-11 | 友達光電股份有限公司 | Display device |
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