CN102073177B - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
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- CN102073177B CN102073177B CN 201110036217 CN201110036217A CN102073177B CN 102073177 B CN102073177 B CN 102073177B CN 201110036217 CN201110036217 CN 201110036217 CN 201110036217 A CN201110036217 A CN 201110036217A CN 102073177 B CN102073177 B CN 102073177B
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Abstract
The invention discloses a liquid crystal display panel. A pixel electrode comprises at least one primary electrode strip and a plurality of secondary electrode branches which symmetrically extend outward from the edges of the two sides of the primary electrode strip. The primary electrode strip has a main width, and has at least one node control part; and the control width of the node control part is different from the main width of the main electrode strip. Or the first and second secondary electrode branches of the pixel electrode extend outward from the two opposite sides of the primary electrode strip respectively. Relative to the first secondary electrode branches, the second secondary electrode branches have a position offset from the extension direction of the primary electrode strip, and the position offset is greater than zero and smaller than the branch width of the first electrode braches and the second electrode branches.
Description
The application is that to be " 200910001601.3 ", the applying date be " on January 5th, 2009 ", invention and created name dividing an application for the patented claim of " display panels " to application number.
Technical field
The relevant a kind of display panels of the present invention, especially a kind of fine slit stable state multiregional vertical align (fine-slit stabilized multi-domain vertical alignment is hereinafter to be referred as FSMVA) display panels.
Background technology
Along with the release of large scale liquid crystal display panel, display panels must possess the wide viewing angle characteristic can satisfy demand in the use.Therefore, multiregional vertical align (multi-domain vertical alignment, the MVA) display panels that has a wide viewing angle characteristic has become the main product of present large scale two-d display panel.
The array base palte of known multi-area vertical coupling liquid crystal display panel (array substrate) has the pixel electrode of patterning, and colored filter substrate (color filter substrate, the CF substrate) usually include a plurality of projections, correspondence is arranged on the center of pixel electrode.Fringe field effect (fringe electric field effect) by pixel electrode is induced swinging to of liquid crystal molecule with the geometric configuration of projection, so that the negative type liquid crystal molecule falls down when pixel applies voltage, and the difference according to lqiuid crystal molecule tipping direction forms different viewing areas (domain), to obtain the characteristic of wide viewing angle.Although known multi-area vertical coupling liquid crystal display panel has wider visual angle, yet because the orientation projection is not so that the part liquid crystal molecule is being executed the slight inclination of meeting generation in the alive situation, therefore can cause display panels under dark attitude, to produce light leakage phenomena and reduce the contrast of liquid crystal display, and then affect the liquid crystal display display effect.
Therefore, a kind of FSMVA display panels of improvement develops and goes out.Please refer to Fig. 1, it is the floor map of the part time pixel region 10 of known FSMVA display panels.As shown in Figure 1, the pixel electrode 20 of known FSMVA display panels is made of elongated primary electrode strip 22 and secondary electrode branches 24, wherein primary electrode strip 22 is complete narrow and long rectangular conductive material, and secondary electrode branches 24 is then stretched out by the full symmetric ground, both sides of the edge of primary electrode strip 22.For liquid crystal molecule 30, the position of primary electrode strip 22 can form trunk portion (trunk), and the gap between the secondary electrode branches 24 of homonymy can form many trickle slits 26.
The array base version of known FSMVA display panels and CF substrate all need not arrange projection and change swinging to of liquid crystal, need to slit be set in the CF substrate-side yet, form different viewing areas and directly control swinging to of liquid crystal by the trickle slit 26 that extends.Although the liquid crystal molecule 30 corresponding to trickle slit 26 can have clear and definite toppling direction, yet corresponding to the liquid crystal molecule of primary electrode strip part the indefinite problem of toppling direction is arranged.Therefore, the many nodes of the random appearance of the stem portion branch of pixel, random node easily causes ghost phenomena (image retention, IR) when display frame, thereby affects image quality.
Therefore, how providing a kind of good multi-area vertical coupling liquid crystal display panel, make liquid crystal arrangement stable, and avoid producing ghost phenomena, still is a present large problem.
Summary of the invention
One of purpose of the present invention is to provide a kind of display panels, to solve above-mentioned known problem.
For reaching above-mentioned purpose, embodiments of the invention provide a kind of display panels, comprise the first substrate with common electrode, the second substrate with pixel electrode, and are arranged at the liquid crystal layer between first substrate and the second substrate.Wherein pixel electrode comprises at least one primary electrode strip and a plurality of secondary electrode branches.Secondary electrode branches is stretched out by the both sides of the edge symmetry of primary electrode strip.Primary electrode strip has the trunk width, and has at least one node control part in the primary electrode strip, and the control width of node control part is different from the trunk width of primary electrode strip.
For reaching above-mentioned purpose, embodiments of the invention provide a kind of display panels in addition, comprise the first substrate with common electrode, the second substrate with pixel electrode, and are arranged at the liquid crystal layer between first substrate and the second substrate.Pixel electrode comprises at least one primary electrode strip, a plurality of the first secondary electrode branches and a plurality of the second secondary electrode branches.Primary electrode strip is extended to first direction, and the primary electrode strip both sides have the first relative edge and the second edge.The first secondary electrode branches stretches out from the first edge of primary electrode strip, and the second secondary electrode branches then stretches out from the second edge of primary electrode strip.Each first with each second secondary electrode branches have branch's width.Wherein, the second secondary electrode branches has a position offset on first direction for the first secondary electrode branches, and position offset greater than zero and less than each first with branch's width of each the second secondary electrode branches.
The present invention can directly utilize pixel electrode effectively to control the toppling direction of liquid crystal molecule, reduce ghost phenomena, do not go to induce swinging to of liquid crystal molecule and do not need in the inboard of the second transparency carrier the orientation projection to be set, and then avoid display panels under dark attitude, to produce light leakage phenomena and reduce the contrast of liquid crystal display.
Description of drawings
Fig. 1 is the floor map of the part time pixel region of known FSMVA display panels.
Fig. 2 to Fig. 4 is the schematic diagram of inferior dot structure one preferred embodiment of display panels of the present invention.
Fig. 5 to Fig. 7 is the enlarged diagram of other preferred embodiments of pixel electrode of the present invention.
Fig. 8 is the enlarged diagram of another preferred embodiment of pixel electrode of the present invention.
Drawing reference numeral
10 pixel region 20 pixel electrodes
22 primary electrode strip, 24 secondary electrode branches
26 trickle slit 30 liquid crystal molecules
102 dot structure 104 first transparency carriers
106 second transparency carriers, 108 liquid crystal layers
110 glass substrates, 112 sweep traces
114 data lines, 115 storage capacitors wires
116 glass substrates, 118 common electrodes
120 pixel electrodes, 122 primary electrode strip
124 secondary electrode branches, 126 node control part
130a first direction 130b second direction
130c third direction 222 primary electrode strip
232 node control part, 322 primary electrode strip
326 node control part, 334 openings
422 primary electrode strip, 424 secondary electrode branches
426 first node control parts, 432 Section Point control parts
522 primary electrode strip 522a the first edge
522b the second edge 524 first secondary electrode branches
525 second secondary electrode branches D length
S spacing P position offset
L branch width W 1 trunk width
W2 control width W 3 control width
Embodiment
Below be about detailed description of the present invention and accompanying drawing.Yet appended accompanying drawing is only for reference and aid illustration usefulness, and the present invention is limited.
For making those skilled in the art can further understand the present invention, hereinafter the spy enumerates a plurality of preferred embodiment of the present invention, and cooperates appended accompanying drawing, describe in detail constitution content of the present invention and the effect wanting to reach.
Please refer to Fig. 2 to Fig. 4.Fig. 2 to Fig. 4 is the schematic diagram of inferior dot structure one preferred embodiment of display panels of the present invention, for example is one of them of the inferior dot structure of RGB (RGB).Fig. 2 is the vertical view of time dot structure, and Fig. 3 is the three-dimensional diagrammatic cross-section of time dot structure, and Fig. 4 is the enlarged diagram of the pixel electrode of part.For highlighting feature of the present invention, only illustrate one dot structure among Fig. 2 and Fig. 3 as representative, only illustrate a primary electrode strip among Fig. 4 as representative, also can be designed to the electric electrode strip of a plurality of masters according to design requirement.Wherein, the subelement of display panels is not illustrated among Fig. 2 to Fig. 4, and actual display panels can comprise dot structure a plurality of times.Moreover pixel electrode shown in Figure 2 only is the skeleton diagram of pixel electrode pattern, and its detailed pattern should be take the enlarged drawing of Fig. 4 as benchmark.In addition, the display panels of the present embodiment can be the FSMVA display panels, but not as limit.
Such as Fig. 2 and shown in Figure 3, the inferior dot structure 102 of the display panels of the present embodiment comprises the first transparency carrier (for example being the membrane transistor substrate) the 104, second transparency carrier (for example being colored filter substrate) 106, and liquid crystal layer 108.Both are oppositely arranged the first transparency carrier 104 and the second transparency carrier 106, and liquid crystal layer 108 is arranged between the first transparency carrier 104 and the second transparency carrier 106, and liquid crystal layer 108 comprises liquid crystal molecule.The first transparency carrier 104 can comprise glass substrate 110 and a plurality of pixel electrodes 120.As shown in Figure 2,104 can comprise in addition many sweep traces parallel to each other 112 and many data lines 114 parallel to each other on the first transparency carrier.Sweep trace 112 defines a plurality of times dot structure 102 with data line 114 on the first transparency carrier 104.Include in addition many storage capacitors wires (storage capacitor bus line) 115 within each time dot structure 102, be arranged in parallel with sweep trace 112 and run through time dot structure 102.The first transparency carrier 104 can comprise the element (not shown) such as alignment film and Polarizer in addition, and for example Polarizer can be circular Polarizer or linear Polarizer, but is not limited to this.
Please contrast Fig. 2 and Fig. 3, the second transparency carrier 106 comprises glass substrate 116 and common electrode 118, and can comprise in addition the element (not shown) such as black matrix pattern, colored filter, alignment film and Polarizer.Black matrix pattern can rough corresponding the first transparency carrier 104 sweep trace 112 and data line 114 and arranging, colored filter can rough respective pixel electrode 120 and is arranged, common electrode 118 then can be covered in the surface of black matrix pattern and colored filter.
In each time dot structure 102, pixel electrode 120 comprises at least one primary electrode strip 122 and a plurality of secondary electrode branches 124, and secondary electrode branches 124 is stretched out by the both sides of the edge symmetry of primary electrode strip 122.For example the inferior dot structure 102 of Fig. 2 includes a plurality of primary electrode strip 122 and secondary electrode branches 124, and the primary electrode strip 122 of part can be extended along first direction 130a, and the primary electrode strip 122 of part can be extended along second direction 130b, to reach the effect of the liquid crystal molecule of liquid crystal layer 108 being divided into a plurality of zones.First direction 130a and the second direction 130b of Fig. 2 approximately are perpendicular quadrature, yet the angle of first direction 130a and second direction 130b need not be confined to this, and can be any angle.In addition, each secondary electrode branches 124 of Fig. 2 can be vertical with primary electrode strip 122 and be stretched out, but is not limited to this.Take the primary electrode strip 122 of extending along first direction 130a as example, each secondary electrode branches 124 that links to each other with aforementioned primary electrode strip 122 is haply all along third direction 130c extension, and third direction 130c and first direction 130a perpendicular quadrature.And in other embodiment, the third direction 130c that each secondary electrode branches 124 is extended can and first direction 130a between have obtuse angle or acute angle.Perhaps, each secondary electrode branches 124 that links to each other with same primary electrode strip 122 also can be extended along different directions, for example is radiated entends.
As shown in Figure 4, primary electrode strip 122 has trunk width W 1, and has at least one node control part 126 in the primary electrode strip 122, can be arranged between the two adjacent secondary electrode branches 124.The control width W 2 of node control part 126 is different from the trunk width W 1 of primary electrode strip 122.In the present embodiment, the control width W 2 of node control part 126 is greater than the trunk width W 1 of primary electrode strip 122, for example the ratio of the trunk width W 1 of the control width W 2 of node control part 126 and primary electrode strip 122 is better can be greater than 1 and less than or equal to 3, obtaining good node control effect, but be not limited to this.The better central shaft that is symmetrical in primary electrode strip 122 of the setting of node control part 126 makes pixel electrode 120 present symmetrical pattern.And in other embodiment, the setting of node control part 126 also can not need be symmetrical in the central shaft of primary electrode strip 122, and for example the position of node control part 126 is left avertence or right avertence for the central shaft of primary electrode strip 122.
When pixel electrode 120 not being imposed voltage, the liquid crystal molecule of the liquid crystal layer 108 of pixel electrode 120 tops can be perpendicular to the direction of substrate arranges (not shown).As shown in Figure 3, when pixel electrode 120 was bestowed a voltage, the liquid crystal molecule of the liquid crystal layer 108 of pixel electrode 120 tops was because the impact of electric field is toppled over.Because the pattern of each pixel electrode 120 can cause the fringe field effect, the liquid crystal molecule that therefore is positioned at primary electrode strip 122 both sides can have different toppling directions, and so that has a plurality of different viewing areas in the inferior dot structure 102.Again, because the present invention is provided with the node control part 126 of particular design, therefore node control part 126 also can assist to control the toppling direction of the liquid crystal molecule that is positioned at trunk portion, so that the node of trunk portion almost only appears at the position that is provided with node control part 126, reduce the ghost phenomena of display panels.Therefore, the present invention can directly utilize pixel electrode 120 effectively to control the toppling direction of liquid crystal molecule, do not go to induce swinging to of liquid crystal molecule and do not need in the inboard of the second transparency carrier 106 the orientation projection to be set, and then avoid display panels under dark attitude, to produce light leakage phenomena and reduce the contrast of liquid crystal display.
Except the pixel electrode 120 of control width W 2 greater than the trunk width W 1 of primary electrode strip 122 of node control part 126, also can have other sample attitudes at pixel electrode of the present invention.See also Fig. 5 to Fig. 7, Fig. 5 to Fig. 7 is the enlarged diagram of other preferred embodiments of pixel electrode of the present invention.The inferior dot structure of display panels herein (among the not complete Fig. 5 to Fig. 7 of being shown in) can comprise the structures such as the first transparency carrier, the second transparency carrier and liquid crystal layer equally, and its similarity repeats no more.As shown in Figure 5, the main difference of the embodiment of Fig. 5 and the embodiment of Fig. 4 is, the control width W 3 of the node control part 232 of the present embodiment is less than the trunk width W 1 of primary electrode strip 222, for example the ratio of the trunk width W 1 of the control width W 3 of node control part 232 and primary electrode strip 222 is more than or equal to 0.3 and less than 1, also can obtain good node control effect, but be not limited to this.
As shown in Figure 6, the main difference of the embodiment of Fig. 6 and the embodiment of Fig. 4 is, each node control part 326 of the present embodiment more comprises opening 334 at middle position.Wherein, the position of opening 334, shape and size need not be subject to Fig. 6 and limit to.In the present invention, the opening 334 of primary electrode strip 322 can not need be arranged at the centre of node control part 326, and can design requirement and be partial to the wherein side of node control part 326; The shape of opening 334 can comprise rectangle, circle, square, other regular polygons, or or even erose opening, but be not limited to this.
As shown in Figure 7, the main difference of the embodiment of Fig. 7 and the embodiment of Fig. 4 is, the present embodiment has simultaneously than the wide first node control part 426 of primary electrode strip 422 and the Section Point control part 432 narrow than primary electrode strip 422.The primary electrode strip 422 of the present embodiment has a plurality of first node control parts 426 and a plurality of Section Point control parts 432, be arranged at respectively between the secondary electrode branches 424, the control width W 2 of first node control part 426 can be greater than the trunk width W 1 of primary electrode strip 422, and the control width W 3 of Section Point control part 432 can be less than the trunk width W 1 of primary electrode strip 422.But first node control part 426 and the 432 one after the other settings of Section Point control part, and approximately be provided with 2 to 15 secondary electrode branches 424 between each first node control part 426 and the adjacent Section Point control part 432, but be not limited to this.
In addition, also can utilize the configuration of secondary electrode branches to avoid ghost phenomena at pixel electrode of the present invention.See also Fig. 8, it is the enlarged diagram of another preferred embodiment of pixel electrode of the present invention.The inferior dot structure of the display panels of the present embodiment (among the not complete Fig. 8 of being shown in) can comprise the structures such as the first transparency carrier, the second transparency carrier and liquid crystal layer equally, and its similarity repeats no more.As shown in Figure 8, the present embodiment provides a kind of display panels in addition, and wherein pixel electrode 520 can comprise at least one primary electrode strip 522, a plurality of the first secondary electrode branches 524 and a plurality of the second secondary electrode branches 525.Primary electrode strip 522 is extended to first direction 130a, and primary electrode strip 522 both sides have the first relative edge 522a and the second edge 522b.The first secondary electrode branches 524 can stretch out from the first edge 522a of primary electrode strip 522, and the second secondary electrode branches 525 then stretches out from the second edge 522b of primary electrode strip 522.Each first secondary electrode branches 524 can have respectively a width L1 of branch and the width L2 of branch with each second secondary electrode branches 525.Wherein, the second secondary electrode branches 525 is for the first secondary electrode branches 524, one position offset P is arranged on first direction 130a, and position offset P greater than zero and less than each first or each second secondary electrode branches 524,525 the width L1 of branch, L2.According to the result who detects, better 20% to 80% of the width L1 of branch or the width L2 of branch that be about of aforementioned location side-play amount P is more preferred from 50% of the width L1 of branch, L2.
Two want the width L1 of branch of electrode branches 524 the adjacent first time, better 1 times to 3 times of being about interval S between each first secondary electrode branches 524; Two want the width L2 of branch of electrode branches 525 the adjacent second time, better being about between the second secondary electrode branches 525 apart from 1 times to 3 times of S.Each first with 3 times to 6 times of the better trunk width W 1 that is about primary electrode strip 522 of each second secondary electrode branches 524,525 length D, but be not limited to this.
Because the second secondary electrode branches 525 is for the first secondary electrode branches 524, one position offset P is arranged on first direction 130a, so that the second secondary electrode branches 525 is for the first secondary electrode branches 524, neither corresponding on the same straight line, neither stagger fully fully.According to analog result of the present invention, the pattern layout of this partial transposition also can effectively reduce ghost phenomena, even the generation of the node of can preventing, and arranges so that liquid crystal molecule corresponding to trunk portion also presents forward, does not almost have the existence of node.
In sum, because pixel electrode of the present invention has the node control part of particular design, perhaps the second secondary electrode branches is for the first secondary electrode branches, one position offset is arranged on first direction, therefore, the present invention can directly utilize pixel electrode effectively to control the toppling direction of liquid crystal molecule, reduce ghost phenomena, do not go to induce swinging to of liquid crystal molecule and do not need in the inboard of the second transparency carrier the orientation projection to be set, and then avoid display panels under dark attitude, to produce light leakage phenomena and reduce the contrast of liquid crystal display.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. a display panels is characterized in that, described display panels comprises:
One first substrate comprises community electrode;
One second substrate comprises at least one pixel electrode, and described pixel electrode comprises:
At least one primary electrode strip, described primary electrode strip has a trunk width, have at least one node control part in the described primary electrode strip, the ratio of a control width of described node control part and the described trunk width of described primary electrode strip is more than or equal to 0.3 and less than 1; And
A plurality of secondary electrode branches are stretched out by the both sides of the edge symmetry of described primary electrode strip; And
One liquid crystal layer is arranged between described first substrate and the described second substrate.
2. display panels as claimed in claim 1 is characterized in that, described node control part is arranged between the two adjacent described secondary electrode branches.
3. display panels as claimed in claim 1, it is characterized in that, described primary electrode strip has a plurality of node control part and is arranged between the described secondary electrode branches, and is provided with 2 to 15 described secondary electrode branches between the two adjacent described node control part.
4. display panels as claimed in claim 1 is characterized in that, have a spacing between the two adjacent described secondary electrode branches, and branch's width of each described secondary electrode branches is essentially 1 times to 3 times of described spacing.
5. display panels as claimed in claim 1 is characterized in that, a length of each described secondary electrode branches is essentially 3 times to 6 times of described trunk width of described primary electrode strip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036217 CN102073177B (en) | 2009-01-05 | 2009-01-05 | Liquid crystal display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110036217 CN102073177B (en) | 2009-01-05 | 2009-01-05 | Liquid crystal display panel |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100016013A Division CN101446726B (en) | 2009-01-05 | 2009-01-05 | Liquid crystal display panel |
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| Publication Number | Publication Date |
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| CN102073177A CN102073177A (en) | 2011-05-25 |
| CN102073177B true CN102073177B (en) | 2013-03-06 |
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| KR102069821B1 (en) * | 2013-07-03 | 2020-01-28 | 삼성디스플레이 주식회사 | Liquid crystal display |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403859A (en) * | 2001-08-31 | 2003-03-19 | 富士通株式会社 | Liquid crystal display and its producing method |
| CN1603896A (en) * | 2003-10-02 | 2005-04-06 | 精工爱普生株式会社 | Liquid crystal display device and electronic apparatus |
| JP2006276357A (en) * | 2005-03-29 | 2006-10-12 | Sanyo Epson Imaging Devices Corp | Liquid crystal apparatus and electronic equipment |
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- 2009-01-05 CN CN 201110036217 patent/CN102073177B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403859A (en) * | 2001-08-31 | 2003-03-19 | 富士通株式会社 | Liquid crystal display and its producing method |
| CN1603896A (en) * | 2003-10-02 | 2005-04-06 | 精工爱普生株式会社 | Liquid crystal display device and electronic apparatus |
| JP2006276357A (en) * | 2005-03-29 | 2006-10-12 | Sanyo Epson Imaging Devices Corp | Liquid crystal apparatus and electronic equipment |
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| CN102073177A (en) | 2011-05-25 |
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