CN102495500B - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN102495500B CN102495500B CN201110456654.1A CN201110456654A CN102495500B CN 102495500 B CN102495500 B CN 102495500B CN 201110456654 A CN201110456654 A CN 201110456654A CN 102495500 B CN102495500 B CN 102495500B
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Abstract
The invention provides a liquid crystal display device. A first electrode and a second electrode are arranged in a pixel area. The second electrode comprises a plurality of first strip-type conductive parts and a second strip-type conductive part. Each of the plurality of first conductive parts has a first terminal and a second terminal which are opposite to each other. The first terminals of the plurality of first conductive parts are connected together through the second conductive part, and the second terminals of the plurality of first conductive parts are disconnected from one another. Openings are reserved in areas between every two adjacent first conductive parts and close to the second terminals in the first electrode, and electrode bumps are formed by the openings. When the liquid crystal display device works, component electric fields in a direction vertical to the first conductive parts are formed between the electrode bumps of the first electrode and the second electrode. Compared with the prior art, the liquid crystal display device has high light transmittance and quick response.
Description
Technical field
The present invention relates to photoelectric display technical field, and in particular to a kind of liquid crystal indicator.
Background technology
At present, liquid crystal indicator, as the one of flat-panel monitor, because it has the advantage such as low-power consumption, the thin light weight of shape, therefore has been widely used in every field.Usually, the liquid crystal layer that the liquid crystal panel in liquid crystal indicator comprises thin-film transistor array base-plate, colored filter substrate and is filled between thin-film transistor array base-plate and colored filter substrate.Thin-film transistor array base-plate comprises many gate lines (gate line), a plurality of data lines (data line), multiple pixel regions (pixel area) etc. of being limited by many gate lines and a plurality of data lines cross arrangement.Pixel region comprises pixel electrode and public electrode and is arranged on the thin film transistor (TFT) (Thin Film Transistor is called for short TFT) near the infall of data line and gate line.Thin film transistor (TFT) is as whether applying voltage to the on-off element on pixel electrode.By applying voltage between pixel electrode and public electrode, thus produce electric field between electrodes, and change this electric field intensity by controlling to execute alive size, and then control the transmissivity of incident light by controlling the deflection angle of liquid crystal molecule between pixel electrode and public electrode, thus realize bright with the dark control of the pixel in liquid crystal panel.
Figure 1 shows that the partial cutaway schematic of existing a kind of fringe field switching (Fringe Field Switching is called for short FFS) type liquid crystal indicator, Figure 2 shows that the schematic plan of array base palte in FFS type liquid crystal indicator in Fig. 1.Refer to Fig. 1 and Fig. 2, in the array base palte 12 of FFS type liquid crystal indicator 10, glass substrate 120 is formed with successively pixel electrode 122, insulation course 126, public electrode 124 and friction orientation layer 128.Pixel electrode 122 flood in pixel region is arranged, public electrode 124 then has the horizontal conductive part 1240 of multiple strip and the vertical conductive part 1242 of two strips, the two ends of multiple horizontal conductive part 1240 connect to form multiple closed strip gab 1244 respectively by two vertical conductive parts 1242, and thin film transistor (TFT) 18 is electrically connected with pixel electrode 122 by drain metal layer 182.
In liquid crystal indicator 10 as depicted in figs. 1 and 2, it utilizes the electric field produced between pixel electrode 122 and public electrode 124, make between the public electrode 124 of strip and be positioned at aligned liquid-crystal molecule directly over public electrode 124 to produce at the in-plane that be parallel to glass substrate 120 and rotate conversion, thus improve the light transmission efficiency of liquid crystal layer while increasing visual angle.
But, in this existing FFS type liquid crystal indicator 10, in vertical conductive part 1242 region of two strips being positioned at public electrode 124, because the electric field produced between the vertical conductive part 1242 of two strips in public electrode 124 and pixel electrode 122 distributes along these vertical conductive part 1242 both sides, and the region between two vertical conductive parts 1242, the electric field produced between the horizontal conductive part 1240 of multiple strip and pixel electrode 122 in public electrode 124 distributes along the both sides of horizontal conductive part 1240, therefore, in the liquid crystal layer of liquid crystal indicator 10, with two vertical conductive part 1242 corresponding regions in public electrode 124, liquid crystal molecule is subject to the impact of two different directions electric fields respectively, so after applying external drive voltage, liquid crystal molecule in these two regions can owing to being subject to the impact of two different directions electric fields respectively, thus occur to wrong (Disclination line) phenomenon, namely the liquid crystal molecule in this region there will be different yawing moments, even substantially do not rotate, this region is caused to present dark-state all the time, reduce the penetrance of pixel reality.
Summary of the invention
Therefore, the invention provides a kind of liquid crystal indicator, with overcome FFS type liquid crystal indicator in prior art pixel cell fringe region liquid crystal molecule after application of a voltage to wrong (Disclination line) phenomenon, thus improve the penetrance of liquid crystal indicator.
Liquid crystal indicator provided by the present invention, comprise many gate lines be arranged on array base palte, a plurality of data lines, and the multiple pixel regions to be limited by many gate lines and a plurality of data lines cross arrangement, each pixel region comprises the first electrode and the second electrode, and the thin film transistor (TFT) near the infall being arranged on data line and gate line, wherein, this second electrode comprises the first conductive part of multiple strip and the second conductive part of a strip, the plurality of first conductive part all has relative first end and the second end, the first end of the plurality of first conductive part is linked together by this second conductive part, the second end of the plurality of first conductive part is not connected mutually, and the electrode projection that this first electrode is provided with opening and is formed by this opening between the first adjacent conductive part and near the region of the second end, when described liquid crystal indicator work, formed perpendicular to the component electrical field on the direction of this first conductive part between this electrode projection of this first electrode and this second electrode.
Further, this opening forms two relative electrode projection.
Further, these two electrode projection are symmetrical arranged.
Further, be interconnected between these two electrode projection.
Further, there is gap between these two electrode projection.
Further, this first conductive part extends along first direction, and this second conductive part extends along second direction, and first direction and second direction are mutually vertical.
Further, this first conductive part extends along first direction, and this second conductive part extends along second direction, and the angle of this first direction and this second direction is roughly 83 degree.
Further, this electrode projection comprises the connecting portion that is connected with this first electrode and the point away from this connecting portion, and the width of this electrode projection is successively decreased to this point by this connecting portion.
Further, this electrode projection is sharp triangle, circular arc or trapezium structure.
Further, this electrode projection is strip.
As from the foregoing, in the present invention, by the electrode projection being provided with opening and being formed by this opening between the first adjacent conductive part and near the region of the second end on the first electrode, thus utilize produce between electrode projection and the first conductive part perpendicular to the component electrical field on the first conductive part direction, and then ensure that the liquid crystal molecule being positioned at pixel cell fringe region can deflect after application of a voltage in the same direction, and then the liquid crystal molecule overcoming close pixel cell fringe region in prior art produces to wrong (Disclination line) phenomenon owing to being subject to the electric field action of two different directions, lighttight pixel cell fringe region is originally made to present on state of whereby, the liquid crystal molecule being positioned at pixel cell fringe region can be made to deflect fast simultaneously, thus improve response time and the penetrance of liquid crystal indicator.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the partial cutaway schematic of existing fringe field switch type liquid crystal indicator.
Fig. 2 is the schematic plan of array base palte in the fringe field switch type liquid crystal indicator shown in Fig. 1.
Fig. 3 is the schematic plan of array base palte in the liquid crystal indicator of first embodiment of the invention.
Fig. 4 is the decomposing schematic representation of the first electrode and the second electrode in Fig. 3.
Fig. 5 is the partial enlarged drawing of V part in Fig. 3.
Fig. 6 is the decomposing schematic representation of the first electrode and the second electrode in second embodiment of the invention.
Fig. 7 is the schematic plan of array base palte in the liquid crystal indicator of third embodiment of the invention.
Fig. 8 is the schematic plan of array base palte in the liquid crystal indicator of fourth embodiment of the invention.
Fig. 9 is the schematic plan of array base palte in the liquid crystal indicator of fifth embodiment of the invention.
Figure 10 is the arrangement schematic diagram of the first electrode and the second electrode in sixth embodiment of the invention.
Figure 11 shows that the penetrance of FFS type liquid crystal indicator in the present invention and the simulate effect of existing FFS type liquid crystal indicator penetrance contrast schematic diagram.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the embodiment of liquid crystal indicator proposed according to the present invention, method, step, structure, feature and effect, be described in detail as follows.
Aforementioned and other technology contents, Characteristic for the present invention, can clearly present in following cooperation describes in detail with reference to graphic preferred embodiment.By the explanation of embodiment, when can to the present invention for the technological means reaching predetermined object and take and effect be able to more deeply and concrete understanding, however institute's accompanying drawings be only to provide with reference to and the use of explanation, be not used for being limited the present invention.
Please refer to Fig. 3, in first embodiment of the invention, liquid crystal indicator is fringe field switch type liquid crystal indicator, and its array base palte 22 comprises the multiple pixel regions being intersected by gate line 24 and data line 26 and limited.Comprise in pixel region: be successively set on the first electrode 222 on glass substrate (not shown), insulation course (not shown), the second electrode 224, be positioned at friction orientation layer (not shown) above the second electrode 224, and be positioned at the thin film transistor (TFT) 28 of data line 26 and gate line 24 infall.In the frictional direction of friction orientation layer and Fig. 3, direction shown in D2 is roughly in the angle of 0 ° ~ ± 15 °, namely non-driven state (also namely there is not state during voltage difference between the first electrode 222 and the second electrode 224), liquid crystal molecule along with direction shown in D2 roughly in the direction orientation of 0 ° ~ ± 15 ° of angles.In figure 3, using the direction identical with D2 as X-direction, using the direction vertical with D2 as Y-direction.
In the present embodiment, the second electrode 224 is oppositely arranged with the first electrode 222 in pixel region.Second electrode 224 and the first electrode 222 can be formed by least one transparent conductive material deposition, such as indium tin oxide (indium tin oxide, ITO), indium zinc oxide (indium zinc oxide, IZO), indium oxide (indium oxide, IO) or other transparency conducting layers.In the present invention, the first electrode is the pixel electrode of liquid crystal indicator, and the second electrode is the public electrode of liquid crystal indicator; Or the first electrode is the public electrode of liquid crystal indicator, the second electrode is the pixel electrode of liquid crystal indicator.
Fig. 4 is the decomposing schematic representation of the first electrode and the second electrode in Fig. 3.Concrete, please refer to Fig. 4, in the FFS type liquid crystal indicator of the present embodiment, the second electrode 224 comprises the first conductive part 2240 of multiple strip, only arranges the second conductive part 2242 of a strip in its second electrode 224.Wherein, the bearing of trend of multiple first conductive parts 2240 of the second electrode 224 is first direction, and the bearing of trend of the second conductive part 2242 is second direction, in the present embodiment, first direction is consistent with X-direction, and second direction is consistent with Y-direction, and namely first direction and second direction are mutually vertical.In the present embodiment, in second electrode 224, the first conductive part 2240 has relative first end 2240a and the second end 2240b, the first end 2240a of the first conductive part 2240 is connected to each other by the second conductive part 2242, and the second end 2240b of the first conductive part 2240 is not connected mutually, and form multiple uncovered gap 2244 between the first conductive part 2240.Namely the second electrode 224 is roughly rendered as pectination, wherein, the second conductive part 2242 along second direction extension forms the comb root position of the second electrode 224 of this pectination, and the first conductive part 2240 along first direction extension forms the comb position of the second electrode 224 of this pectination.
Figure 5 shows that the close-up schematic view near the region of the second end 2240b between the first conductive part 2240 adjacent in Fig. 3.In the present embodiment, as shown in Figure 4 and Figure 5, the first electrode 222 is provided with opening 226 and the electrode projection 228 by opening 226 formation between the first adjacent conductive part 2240 and near the region of the second end 2240b.When liquid crystal indicator in the present invention works, formed perpendicular to the component electrical field on the direction of the first conductive part 2240 between the electrode projection 228 of the first electrode 222 and the second electrode 224.In the present embodiment, relative electrode first teat 228a and electrode second teat 228b is formed by this opening 226.Under preferable case, electrode first teat 228a and electrode second teat 228b is symmetrical structure.Under preferable case, electrode first teat 228a and electrode second teat 228b comprise the connecting portion that is connected with the first electrode 222 and the point away from connecting portion respectively, and the width of electrode first teat 228a and electrode second teat 228b is successively decreased to point by its respective connecting portion respectively.In the present embodiment, electrode first teat 228a and electrode second teat 228b is symmetrical sharp three-legged structure, and for electrode first teat 228a, it has two side AB and AC, and the angle theta limited by two side AB and AC.As shown in Figure 5, by the sharp three-legged structure of this symmetry, can make at the close the second end 2240b correspondence position with the first conductive part 2240, the electric field produced between first electrode 222 and the first conductive part 2240 has stronger perpendicular to the component on the direction of the first conductive part 2240, thus large perpendicular to the component on the direction of the first conductive part 2240 than pixel cell central area electric field of the electric field making to be positioned at the region corresponding with the first conductive part 2240 the second end 2240b, this electric field ensure that the liquid crystal molecule being positioned at pixel cell fringe region can deflect after application of a voltage in the same direction, and then the liquid crystal molecule overcoming close pixel cell fringe region in prior art produces to wrong (Disclination line) phenomenon owing to being subject to the electric field action of two different directions, lighttight pixel cell fringe region is originally made to present on state of whereby, thus improve the penetrance of liquid crystal indicator.This electric field can make the liquid crystal molecule being positioned at pixel cell fringe region deflect fast simultaneously, thus can improve the response time of liquid crystal indicator.In the present embodiment, in the sharp three-legged structure of electrode first teat 228a or electrode second teat 228b, the angle of θ is less, then the first electrode 222 and the second electrode 224 form the larger perpendicular to the component on the direction of the first conductive part 2240 of electric field, then better to the lifting effect of its response time and penetrance.
In the present embodiment, the sharp three-legged structure on the first above-mentioned electrode 222 is formed by hollowing out the correspondence position of the second electrode lay 224, is namely formed by opening 226.In the present invention, as shown in Fig. 3, Fig. 4 and Fig. 5, can only be provided with opening 226 and form electrode first teat 228a and the electrode second teat 228b of the sharp three-legged structure of this symmetry by opening 226 on the first electrode 222 and between the first adjacent conductive part 2240 and near the region of the second end 2240b, and the first electrode 222 and the second end 2240b overlapping region not hollowed out.
In addition, because the spacing between the second electrode 224 first conductive part 2240 is very little, therefore, region between the second end 2240b of the first conductive part 2240 adjacent on the first electrode 222 and in the second electrode 224 is hollowed out and forms this sharp three-legged structure can there is certain difficulty in specific implementation process, therefore, please refer to Fig. 6, in second embodiment of the invention, the position that first electrode 322 is overlapping with the second electrode 324 can be hollowed out simultaneously form opening 326, to impel the formation of this sharp three-legged structure.
In addition, please refer to Fig. 7 to Fig. 9, in the 3rd to the 5th embodiment, electrode projection 428,528 and 628 also can adopt the shapes such as circular arc, trapezoidal or strip, repeats no more.In above-mentioned 3rd, the 4th embodiment as shown in Figure 7, Figure 8, electrode first teat and electrode second teat be circular arc or trapezoidal time, electrode first teat and electrode second teat can be interconnected, and also can there is certain interval.
Figure 10 is the arrangement schematic diagram of the second electrode and the first electrode in sixth embodiment of the invention.As shown in Figure 10, the bearing of trend of multiple first conductive parts of the second electrode 724 is first direction, the bearing of trend of the second conductive part is second direction, in the present embodiment, with aforementioned first embodiment unlike, the second direction of the second conductive part is still consistent with Y-direction, and first direction and second direction are roughly in 83 degree of angles, and namely the first conductive part of this second electrode 724 and the angle of the second conductive part are about 83 degree.In the present embodiment, the friction orientation direction of liquid crystal molecule is perpendicular to second direction, namely non-driven state (also namely there is not state during voltage difference between the first electrode 222 and the second electrode 224), the friction orientation direction of liquid crystal molecule and first direction are pre-formed the angle of certain angle, therefore, it is possible to make the friction orientation direction of electric field and the liquid crystal molecule formed in the second electrode 724 and the first electrode 722 be pre-formed certain angle, and then can liquid crystal molecule be made fast to deflect, and then accelerate the response time of liquid crystal indicator.It should be noted that, the second electrode shown in this Figure 10 and the first electrode arrangements shape are equally applicable to the second to the 5th embodiment, are not repeating.
Figure 11 shows that the penetrance of FFS type liquid crystal indicator in the present invention and the simulate effect of existing FFS type liquid crystal indicator penetrance contrast schematic diagram, wherein, S1 represents the simulation curve of existing FFS type liquid crystal indicator penetrance, and S2 represents the simulation curve of FFS type liquid crystal indicator penetrance in the present invention.As can be seen from Figure 11, the maximum penetration rate of the pixel region of the embodiment of the present invention can bring up to 0.4448 by 0.4198 of prior art, approximately improves about 6%.
In sum, in liquid crystal indicator provided by the present invention, by hollowing out formed electrode projection on the first electrode, and between the first conductive part adjacent on the first electrode and in described second electrode of electrode projection and near the region of the second end, second electrode is set to pectination simultaneously, therefore, when liquid crystal indicator works, can produce stronger perpendicular to the component electrical field on the first conductive part direction of the second electrode between the electrode projection of the first electrode and the second electrode, thus ensure that the liquid crystal molecule being positioned at pixel cell fringe region can deflect after application of a voltage in the same direction, and then overcome in prior art near the liquid crystal molecule of pixel cell fringe region due to be subject to two different directions electric field action and produce to wrong (Disclination line) phenomenon, lighttight pixel cell fringe region is originally made to present on state of whereby, thus improve the penetrance of liquid crystal indicator.This electric field can make the liquid crystal molecule being positioned at pixel cell fringe region deflect fast simultaneously, thus can improve the response time of liquid crystal indicator.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a liquid crystal indicator, the multiple pixel regions comprising many gate lines be arranged on array base palte, a plurality of data lines and limited by many gate lines and a plurality of data lines cross arrangement, each pixel region comprises the first electrode and the second electrode and is arranged on the thin film transistor (TFT) near the infall of data line and gate line, it is characterized in that:
This second electrode comprises the first conductive part of multiple strip and the second conductive part of a strip, the plurality of first conductive part all has relative first end and the second end, the first end of the plurality of first conductive part is linked together by this second conductive part, and the second end of the plurality of first conductive part is not connected mutually; And
The electrode projection that this first electrode is provided with opening and is formed by this opening between adjacent described first conductive part and near the region of described the second end, when described liquid crystal indicator work, formed perpendicular to the component electrical field on the direction of this first conductive part between this electrode projection of this first electrode and this second electrode.
2. liquid crystal indicator as claimed in claim 1, is characterized in that: this electrode projection comprises two electrode projection be oppositely arranged.
3. liquid crystal indicator as claimed in claim 2, is characterized in that: these two electrode projection are symmetrical arranged.
4. liquid crystal indicator as claimed in claim 2, is characterized in that: be interconnected between these two electrode projection.
5. liquid crystal indicator as claimed in claim 2, is characterized in that: there is gap between these two electrode projection.
6. liquid crystal indicator as claimed in claim 1, it is characterized in that: this first conductive part extends along first direction, this second conductive part extends along second direction, and first direction and second direction are mutually vertical.
7. liquid crystal indicator as claimed in claim 1, it is characterized in that: this first conductive part extends along first direction, this second conductive part extends along second direction, and the angle of this first direction and this second direction is roughly 83 degree.
8. the liquid crystal indicator according to any one of claim 1 to 7, it is characterized in that: this electrode projection comprises the connecting portion that is connected with this first electrode and the point away from this connecting portion, and the width of this electrode projection is successively decreased to this point by this connecting portion.
9. liquid crystal indicator as claimed in claim 8, is characterized in that: this electrode projection is sharp triangle, circular arc or trapezium structure.
10. the liquid crystal indicator according to any one of claim 1 to 7, is characterized in that: this electrode projection is strip.
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| CN201110456654.1A CN102495500B (en) | 2011-12-31 | 2011-12-31 | Liquid crystal display device |
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| CN201110456654.1A CN102495500B (en) | 2011-12-31 | 2011-12-31 | Liquid crystal display device |
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| CN102495500A CN102495500A (en) | 2012-06-13 |
| CN102495500B true CN102495500B (en) | 2015-02-18 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9508778B2 (en) * | 2014-04-25 | 2016-11-29 | Samsung Display Co., Ltd. | Organic light emitting diode display |
| CN105137680B (en) * | 2015-10-20 | 2018-11-06 | 京东方科技集团股份有限公司 | A kind of liquid crystal display electrode, array substrate, display panel, display device |
| CN105759515B (en) * | 2016-04-11 | 2019-03-12 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN106444174B (en) * | 2016-08-30 | 2019-12-31 | 深圳市华星光电技术有限公司 | Pixel electrode |
| CN107121851B (en) * | 2017-06-19 | 2019-02-26 | 深圳市华星光电技术有限公司 | Pixel electrode and array substrate |
| US10437111B2 (en) | 2017-06-19 | 2019-10-08 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Pixel electrode and array substrate |
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| EP0943953A1 (en) * | 1998-03-20 | 1999-09-22 | Nec Corporation | Liquid crystal display panel |
| CN101614915A (en) * | 2008-06-25 | 2009-12-30 | 乐金显示有限公司 | The liquid crystal indicator of fringe field switching mode and array base palte thereof |
| WO2010110222A1 (en) * | 2009-03-25 | 2010-09-30 | 株式会社 東芝 | Liquid crystal display apparatus |
| US7999899B1 (en) * | 2011-01-25 | 2011-08-16 | Hannstar Display Corp. | Fringe field switching liquid crystal display apparatus |
| CN201974614U (en) * | 2011-03-11 | 2011-09-14 | 华映视讯（吴江）有限公司 | Pixel structure and pixel array substrate |
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| EP0943953A1 (en) * | 1998-03-20 | 1999-09-22 | Nec Corporation | Liquid crystal display panel |
| CN101614915A (en) * | 2008-06-25 | 2009-12-30 | 乐金显示有限公司 | The liquid crystal indicator of fringe field switching mode and array base palte thereof |
| WO2010110222A1 (en) * | 2009-03-25 | 2010-09-30 | 株式会社 東芝 | Liquid crystal display apparatus |
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| CN201974614U (en) * | 2011-03-11 | 2011-09-14 | 华映视讯（吴江）有限公司 | Pixel structure and pixel array substrate |
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