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CN1877430A - Multi-Zone Vertical Alignment LCD Panel - Google Patents

Multi-Zone Vertical Alignment LCD Panel Download PDF

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Publication number
CN1877430A
CN1877430A CN 200610101971 CN200610101971A CN1877430A CN 1877430 A CN1877430 A CN 1877430A CN 200610101971 CN200610101971 CN 200610101971 CN 200610101971 A CN200610101971 A CN 200610101971A CN 1877430 A CN1877430 A CN 1877430A
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CN
China
Prior art keywords
liquid crystal
pixel electrode
crystal panel
substrate
pixel
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CN 200610101971
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Chinese (zh)
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CN100426104C (en
Inventor
陈映如
苏睦仁
林敬桓
张志明
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AUO Corp
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AU Optronics Corp
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Priority to CNB2006101019710A priority Critical patent/CN100426104C/en
Publication of CN1877430A publication Critical patent/CN1877430A/en
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Publication of CN100426104C publication Critical patent/CN100426104C/en
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Abstract

The invention discloses a liquid crystal panel, which comprises a first substrate and a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a pixel having a first pixel electrode, a second pixel electrode, and a plurality of bridge electrodes disposed on the second substrate, the plurality of bridge electrodes electrically connected to the first pixel electrode and the second pixel electrode; and a first alignment protrusion and a second alignment protrusion respectively disposed on the first substrate and corresponding to the first pixel electrode and the second pixel electrode.

Description

Multizone vertical alignment liquid crystal panel
Technical field
The present invention relates to a kind of liquid crystal panel, particularly relate to a kind of multizone vertical alignment liquid crystal panel.
Background technology
LCD widely is applied in various electronic product, as mobile phone, PDA(Personal Digital Assistant) and notebook computer (notebook) etc., and fast development along with large scale flat-panel screens market, LCD with compact characteristic is being played the part of considerable role especially, becomes the market mainstream and replace the cathode ray tube (CRT) display gradually.Yet, because the visual angle of conventional liquid crystal is wide inadequately, thus become its developmental restrictive condition, so a kind of multiregional vertical align that increases the visual angle (multi-domain vertically aligned, MVA) display panels just in response to and give birth to.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the floor map of the pixel of existing multizone vertical alignment liquid crystal panel 10, and Fig. 2 is along the schematic cross-section of AA ' line segment among Fig. 1.As shown in Fig. 1 and Fig. 2, existing multizone vertical alignment liquid crystal panel 10 comprises upper substrate 12, infrabasal plate 14, the liquid crystal layer 16 that is made of the negative type liquid crystal molecule is filled between upper substrate 12 and the infrabasal plate 14, public electrode 18 is located at the surface of upper substrate 12 in the face of infrabasal plate 14, a plurality of colored light-filtering units (figure does not show) are arranged between upper substrate 12 and the public electrode 18, first pixel electrode 20 and second pixel electrode 28 are located between liquid crystal layer 16 and the infrabasal plate 14, and first orientation thrust (protrusion) 22 and the second orientation thrust 30 be located at the surface of public electrode 18 in the face of infrabasal plate 14.
Wherein, first pixel electrode 20 and second pixel electrode 28 can be tin indium oxide (indium tinoxide, ITO) or indium zinc oxide (indium zinc oxide, IZO) through electrode that is constituted or aluminium (aluminum, Al) reflecting electrode that is constituted, and first pixel electrode 20 and second pixel electrode 28 are separated by a main slit (primary slit) 26 and with single rectangle through electrode as the bridged electrodes 24 that is connected first pixel electrode 20 and second pixel electrode 28.As shown in fig. 1, the width of main slit 26 is d, and the width of bridged electrodes 24 is w, and enough main slit width d can make first pixel electrode 20 and second pixel electrode 28 form good liquid crystal arrangement.
Generally speaking, whether the stability of liquid crystal arrangement and regional homogeneity can be that the position that ± 90 ° of states exist is judged by the position angle of liquid crystal molecule liquid crystal above bridged electrodes.When the position of position angle ± 90 ° was positioned at the pixel middle, liquid crystal molecule can reach the most stable arrangement.Otherwise liquid crystal arrangement can uneven phenomenon occur with different visual angles.When main slit 26 has enough width, can produce enough fringe fields (fringe field) strength, liquid crystal molecule is presented in the pixel middle ± 90 ° position angle, and then reach stable liquid crystal arrangement.Yet, will have influence on aperture opening ratio thus.When the reduced width of main slit 26 when improving aperture opening ratio, not enough fringe field strength can make the Centromedian liquid crystal molecule of pixel be subject to disturbance, and makes the position angle not be ± 90 °, shown in the arrow among Fig. 1.For instance, 1.9 cun small size panel pixels sizes are about 56.5 microns and multiply by 169.5 microns.Wherein, the main slit width d of panel is 10 microns, and the width w of its bridged electrodes then is 6 microns, so can reach preferred liquid crystal arrangement, but reduces aperture opening ratio.Yet the width w that is reduced into 6 microns and bridged electrodes as main slit width d is maintained 6 microns when improving aperture opening ratio, just can produce the phenomenon of edge electric field strength deficiency and causes the arrangement instability of liquid crystal.
Secondly, because the orientation angles of liquid crystal molecule depends on electric field action, that is the contribution of orientation thrust and main slit, single bridged electrodes in existing design can cause pullling of left and right sides strength and influence the equilibrium state of liquid crystal molecule, cause 90 ° of azimuthal positions might not be positioned at the centre of bridged electrodes, and then skew about liquid crystal molecule is produced, even the phenomenon of past any angular deflection.
Summary of the invention
Therefore fundamental purpose of the present invention provides a kind of multizone vertical alignment liquid crystal panel, existingly only uses single bridged electrodes and causes producing because of fringe field is not enough the liquid crystal arrangement problem of unstable to improve.
According to claim of the present invention, disclose a kind of liquid crystal panel, comprise first substrate and second substrate; Liquid crystal layer is arranged between this first substrate and this second substrate; Pixel, this pixel have first pixel electrode, second pixel electrode and a plurality of bridged electrodes and are arranged on this second substrate, and these a plurality of bridged electrodes are electrically connected this first pixel electrode and this second pixel electrode; And first the orientation thrust (protrusion) and the second orientation thrust, be arranged at respectively on this first substrate and to should first pixel electrode and this second pixel electrode.
The present invention utilizes the bridged electrodes more than two to connect two pixel electrodes, and improve the existing more weak fringe field effect that produces because of single bridged electrodes, and then make the liquid crystal molecule that is positioned on the bridged electrodes be subjected to disturbance deflection and arrange unsettled situation by the potential energy well between the bridged electrodes.In addition, because the width of the main slit between existing two pixel electrodes is subjected to the restriction of single bridged electrodes, therefore the present invention except the arrangement that can effectively improve liquid crystal molecule with reach uniform areal distribution, can under the situation that does not increase main slit width, promote aperture ratio of pixels again.
Description of drawings
Fig. 1 is the floor map of a pixel of existing multizone vertical alignment liquid crystal panel.
Fig. 2 is along the schematic cross-section of AA ' line segment among Fig. 1.
Fig. 3 is the pixel planes synoptic diagram of the multizone vertical alignment liquid crystal panel of the preferred embodiment of the present invention.
Fig. 4 is along the schematic cross-section of BB ' line segment among Fig. 3.
Fig. 5 is the pixel planes synoptic diagram of the multizone vertical alignment liquid crystal panel of another embodiment of the present invention.
Fig. 6 is the pixel planes synoptic diagram of the multizone vertical alignment liquid crystal panel of another embodiment of the present invention.
Fig. 7 is the aperture opening ratio comparison diagram of single bridged electrodes and double joint bridged electrodes.
The simple symbol explanation
10 multizone vertical alignment liquid crystal panels, 12 upper substrates
14 infrabasal plates, 16 liquid crystal layers
18 public electrodes, 20 first pixel electrodes
22 first orientation thrusts, 24 bridged electrodes
26 main slit 28 second pixel electrodes
30 second pixel electrodes, 40 multizone vertical alignment liquid crystal panels
42 upper substrates, 44 infrabasal plates
46 liquid crystal layers, 48 public electrodes
50 first pixel electrodes, 52 second pixel electrodes
54 bridged electrodes, 56 first orientation thrusts
58 second orientation thrusts, 60 main slits
62 slit 64 potential energy well
Potential energy 72 bridged electrodes on 66 bridged electrodes
74 first pixel electrodes, 76 second pixel electrodes
78 pars intermedias, 80 end points portions
82 slit 84 orientation thrusts
92 bridged electrodes, 94 first pixel electrodes
96 second pixel electrodes, 98 pars intermedias
102 slits of 100 v of end points portion
104 orientation thrusts
Embodiment
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the floor map of pixel of the multizone vertical alignment liquid crystal panel 40 of the preferred embodiment of the present invention, and Fig. 4 is along the schematic cross-section of BB ' line segment among Fig. 3.As shown in Fig. 3 and Fig. 4, multizone vertical alignment liquid crystal panel 40 of the present invention comprises upper substrate 42, infrabasal plate 44, by for example being that the liquid crystal layer 46 that the negative type liquid crystal molecule is constituted is filled between upper substrate 42 and the infrabasal plate 44, public electrode 48 is located at the surface of upper substrate 42 in the face of infrabasal plate 44, a plurality of colored light-filtering units (figure does not show) are arranged between upper substrate 42 and the public electrode 48, first pixel electrode 50 and second pixel electrode 52 are located at infrabasal plate 44, a plurality of rectangle bridged electrodes 54 are arranged on the infrabasal plate 44 and are electrically connected first pixel electrode 50 and second pixel electrode 52, and first orientation thrust 56 and the second orientation thrust 58 be located at upper substrate 42 surface and corresponding first pixel electrode 50 and second pixel electrodes 52.
Wherein, first pixel electrode 50 and second pixel electrode 52 can be for example with tin indium oxide (indiumtin oxide, ITO) or indium zinc oxide (indium zinc oxide, the through electrode that transparent conductive material constituted or for example with aluminium (aluminum such as IZO), the reflecting electrode that is constituted of high reflectance such as Al), and the first orientation thrust 56 and the second orientation thrust 58 are respectively with respect to the middle position setting of first pixel electrode 50 and second pixel electrode 52.And the bottom of first orientation thrust 56 and the second orientation thrust 58 is quadrilateral or circle.Secondly, has main slit (primary slit) 60 between first pixel electrode 50 and second pixel electrode 52, have inferior slit (secondary slit) 62 between the bridged electrodes 54, and bridged electrodes 54 is with respect to the line of the first orientation thrust 56 and the second orientation thrust 58 and is symmetrical arranged.In addition, multizone vertical alignment liquid crystal panel 40 of the present invention can comprise the 3rd pixel electrode (figure do not show) again and is arranged on the infrabasal plate 44 and by a plurality of bridged electrodes (scheming not show) and connects second pixel electrode 52.
It should be noted that between the bridged electrodes 54 of the present invention, that is the position of inferior slit 62 is formed with potential energy well 64, has than low-potential energy with respect to the potential energy 66 on each bridged electrodes 54.In other words, the present invention can limit to negative type liquid crystal molecule in the liquid crystal layer than the low-potential energy trap by formed between two bridged electrodes 54, and liquid crystal molecule is had ± 90 ° position angle and reach stable status.
Please refer to Fig. 5, Fig. 5 is the floor map of pixel of the multizone vertical alignment liquid crystal panel of another embodiment of the present invention.As shown in Figure 5, the orientation thrust 84 of multizone vertical alignment liquid crystal panel is corresponding first pixel electrode 74 and second pixel electrode 76 respectively, and present embodiment utilizes a plurality of bridged electrodes 72 to connect first pixel electrode 74 and second pixel electrode 76 equally.Be different from previous described rectangle bridged electrodes, the bridged electrodes 72 of present embodiment has pars intermedia 78 and two end points portions 80, and the width of two end points portions 80 is respectively greater than the width of pars intermedia 78.Simultaneously, present embodiment has the potential energy well that produces than bridged electrodes 72 relative lower potential energy equally at the relative position of inferior slit 82, therefore can limit to negative type liquid crystal molecule in the liquid crystal layer by this potential energy well, and make liquid crystal molecule reach a stable status, as shown in Figure 4.In addition, present embodiment can form the 3rd pixel electrode (figure does not show) again in second pixel electrode, 76 belows, and connect the 3rd pixel electrode and second pixel electrode 76 by a plurality of bridged electrodes (figure do not show), with the pixel of formation multizone vertical alignment liquid crystal panel.
Please refer to Fig. 6, Fig. 6 is the floor map of pixel of the multizone vertical alignment liquid crystal panel of another embodiment of the present invention.As shown in Figure 6, the orientation thrust 104 of multizone vertical alignment liquid crystal panel is corresponding first pixel electrode 94 and second pixel electrode 96 respectively, and present embodiment utilizes a plurality of bridged electrodes 92 to connect first pixel electrode 94 and second pixel electrode 96.In addition, the bridged electrodes 92 of present embodiment has pars intermedia 98 and two end points portions 100 equally, and the width of two end points portions 100 is respectively greater than the width of pars intermedia 98.Be different from previous embodiment, the inferior slit 102 of present embodiment is a rectangle.The relative position of the inferior slit 102 of present embodiment has the potential energy well that produces than bridged electrodes 92 relative lower potential energy equally, and can make liquid crystal molecule reach stable status by this potential energy well.
In sum, utilize single bridged electrodes to connect two pixel electrodes compared to existing, the present invention utilizes the bridged electrodes more than two to connect two pixel electrodes, and existing because of single bridged electrodes produces more weak fringe field effect, and then make the liquid crystal molecule that is positioned on the bridged electrodes not be subjected to disturbance deflection and arrange unsettled situation by improving between the bridged electrodes than the low-potential energy trap.In addition, because the width of the main slit between existing two pixel electrodes is subjected to the restriction of single bridged electrodes, therefore the present invention except the arrangement that can effectively improve liquid crystal molecule with reach uniform areal distribution, can under the situation that does not increase main slit width, promote aperture ratio of pixels again.
Please refer to Fig. 7, Fig. 7 is single bridged electrodes and the aperture opening ratio comparison diagram of double joint bridged electrodes under different resolution.Generally speaking, can reach preferred arrangement in order to make liquid crystal molecule, the main slit width of existing single bridged electrodes design need reach 10 microns.According to a preferred embodiment of the invention, the main slit width under the design of double joint bridged electrodes then only needs 6 microns.In addition, under the resolution of 200ppi and 300ppi, the aperture opening ratio of single bridged electrodes is about 49% and 31% respectively, and the aperture opening ratio of double joint bridged electrodes then is respectively 52% and 36%.This shows that the double joint bridged electrodes not only can effectively promote whole aperture opening ratio, more apparent lifting is arranged under high resolving power again.
The above only is the preferred embodiments of the present invention, and all equivalent variations and modifications of doing according to claim of the present invention all should belong to covering scope of the present invention.

Claims (18)

1. liquid crystal panel comprises:
First substrate and second substrate;
Liquid crystal layer is arranged between this first substrate and this second substrate;
Pixel, this pixel have first pixel electrode, second pixel electrode and a plurality of bridged electrodes and are arranged on this second substrate, and these a plurality of bridged electrodes are electrically connected this first pixel electrode and this second pixel electrode; And
The first orientation thrust and the second orientation thrust are arranged at respectively on this first substrate and to should first pixel electrode and this second pixel electrode.
2. liquid crystal panel as claimed in claim 1, wherein these a plurality of orientation thrusts are respectively with respect to the middle position setting of these a plurality of pixel electrodes.
3. liquid crystal panel as claimed in claim 1, wherein these a plurality of bridged electrodes are rectangle.
4. liquid crystal panel as claimed in claim 1, wherein these a plurality of bridged electrodes have pars intermedia and two end points portions, and wherein the width of these two end points portions is respectively greater than the width of this pars intermedia.
5. liquid crystal panel as claimed in claim 1, wherein these a plurality of bridged electrodes are with respect to the line of these a plurality of orientation thrusts and are symmetrical arranged.
6. liquid crystal panel as claimed in claim 1 wherein have main slit between this first pixel electrode and this second pixel electrode, and these a plurality of bridged electrodes is located in this main slit.
7. liquid crystal panel as claimed in claim 1 wherein respectively has inferior slit between this bridged electrodes.
8. liquid crystal panel as claimed in claim 7, wherein respectively the potential energy of this bridged electrodes is higher than the respectively potential energy of this time slit.
9. liquid crystal panel as claimed in claim 7, wherein the potential energy of this time slit has ± 90 ° position angle liquid crystal molecule.
10. liquid crystal panel as claimed in claim 1, wherein this liquid crystal layer comprises the negative type liquid crystal molecule.
11. liquid crystal panel as claimed in claim 1 also comprises public electrode, is arranged on this first substrate.
12. liquid crystal panel as claimed in claim 11 comprises that also a plurality of colored light-filtering units are arranged between this first substrate and this public electrode.
13. liquid crystal panel as claimed in claim 1, wherein this first pixel electrode and this second pixel electrode are through electrode or reflecting electrode.
14. liquid crystal panel as claimed in claim 1 comprises that also the 3rd pixel electrode is arranged on this second substrate and connects this second pixel electrode.
15. liquid crystal panel as claimed in claim 14, wherein the 3rd pixel electrode is through electrode or reflecting electrode.
16. liquid crystal panel as claimed in claim 14, wherein this first pixel electrode, second pixel electrode and the 3rd pixel electrode are tin indium oxide or indium zinc oxide.
17. liquid crystal panel as claimed in claim 1 also comprises a plurality of thin film transistor (TFT)s, is arranged at respectively on this second substrate.
18. liquid crystal panel as claimed in claim 1, wherein the bottom of this first orientation thrust and this second orientation thrust is circle or quadrilateral.
CNB2006101019710A 2006-07-18 2006-07-18 Multi-domain vertical alignment liquid crystal panel Expired - Fee Related CN100426104C (en)

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Application Number Priority Date Filing Date Title
CNB2006101019710A CN100426104C (en) 2006-07-18 2006-07-18 Multi-domain vertical alignment liquid crystal panel

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Application Number Priority Date Filing Date Title
CNB2006101019710A CN100426104C (en) 2006-07-18 2006-07-18 Multi-domain vertical alignment liquid crystal panel

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CN1877430A true CN1877430A (en) 2006-12-13
CN100426104C CN100426104C (en) 2008-10-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8094273B2 (en) 2007-12-05 2012-01-10 Au Optronics Corporation Color filter with different alignment structures and display panel using the same
WO2015062310A1 (en) * 2013-10-29 2015-05-07 京东方科技集团股份有限公司 Liquid crystal display panel, display device and drive method therefor
CN107247371A (en) * 2017-08-04 2017-10-13 深圳市华星光电技术有限公司 The pixel electrode structure and liquid crystal display panel of liquid crystal display panel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69840797D1 (en) * 1997-06-12 2009-06-10 Sharp Kk Display device with vertically aligned liquid crystal
JP4397444B2 (en) * 1998-12-28 2010-01-13 シャープ株式会社 Liquid crystal display
JP2002169159A (en) * 2000-11-27 2002-06-14 Koninkl Philips Electronics Nv Alignment division type vertical alignment liquid crystal display
JP4752266B2 (en) * 2004-12-24 2011-08-17 カシオ計算機株式会社 Liquid crystal display element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8094273B2 (en) 2007-12-05 2012-01-10 Au Optronics Corporation Color filter with different alignment structures and display panel using the same
WO2015062310A1 (en) * 2013-10-29 2015-05-07 京东方科技集团股份有限公司 Liquid crystal display panel, display device and drive method therefor
US9678393B2 (en) 2013-10-29 2017-06-13 Boe Technology Group Co., Ltd. Liquid crystal display panel, display apparatus and method for driving the display apparatus
CN107247371A (en) * 2017-08-04 2017-10-13 深圳市华星光电技术有限公司 The pixel electrode structure and liquid crystal display panel of liquid crystal display panel
CN107247371B (en) * 2017-08-04 2021-06-22 Tcl华星光电技术有限公司 Pixel electrode structure of liquid crystal display panel and liquid crystal display panel

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Granted publication date: 20081015