CN100480794C - Multiple-domain liquid crystal display - Google Patents
Multiple-domain liquid crystal display Download PDFInfo
- Publication number
- CN100480794C CN100480794C CNB200610101758XA CN200610101758A CN100480794C CN 100480794 C CN100480794 C CN 100480794C CN B200610101758X A CNB200610101758X A CN B200610101758XA CN 200610101758 A CN200610101758 A CN 200610101758A CN 100480794 C CN100480794 C CN 100480794C
- Authority
- CN
- China
- Prior art keywords
- pattern assembly
- liquid crystal
- crystal display
- auxiliary electrode
- display device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
A multi-domain liquid crystal display device comprises a first and a second pattern components and a plurality of first and second assistant electrodes; wherein the first and the second pattern components respectively have a first and a second polarities which are opposite to each other under the same picture controlled by a reversal rotary driving time sequence; the first and the second assistant electrodes are respectively connected with the first and the second pattern components; furthermore, the first and the second assistant electrodes are respectively wound around the second and the first pattern components.
Description
Technical field
The invention relates to a kind of multi-domain liquid crystal display device, relevant especially a kind of collocation reversal of poles sequential control is to produce the multi-domain liquid crystal display device of fringe field effect (fringe field effect).
Background technology
The known dielectric anisotropy (dielectric anisotropy) of utilizing is negative negative type liquid crystal material, constitute the LCD alignment mode of vertical orientation (vertical alignment) or Equidirectional type orientation (homeotropic alignment), liquid crystal molecule was not arranged in the vertical substrate mode when cause applied voltage, so good contrast (contrast) performance can be provided.Yet vertical orientation type liquid crystal display (vertica11yaligned LCD) is for forming the multiple domain segmentation effect usually, and the structure that it mated has a little light leak or multiple domain is cut apart the situation that disposes scarce capacity.
Figure 1A is a diagrammatic cross-section, shows a known multi-domain vertical alignment liquid crystal displays (multi-domainvertically aligned LCD; MVA LCD) design.Shown in Figure 1A, it is to form convex body (bump) 106 respectively on upper and lower substrate 102,104, form the vertical orientation film 108 that covers convex body (bump) 106 on it again, the tilt angle (pre-tilt angle) that the liquid crystal molecule 112 of vertical orientation is had tilt towards different directions when not applying voltage applies liquid crystal molecule 112 vergence directions behind the voltage so as to control.After applying voltage, liquid crystal layer promptly may be partitioned into the little territory of liquid crystal of the different vergence directions of a plurality of tools respectively, with the viewing angle characteristic under the GTG show state of the different viewing angles of effective improvement.Moreover, be not defined as convex body 106 as border, the territory regulation structure (regulation structure) that tilt angle is provided, also can shown in Figure 1B, on substrate 114, form concave structure 116 and also can.
Shown in Figure 1A and Figure 1B, though formation convex body 106 or concave structure 116 modes can reach the effect of making the little territory of a plurality of liquid crystal, yet, under the state that does not apply voltage (Voff), relatively penetrate light I
1And I
2Light path as can be known, be not fully vertical because of this border, territory regulation structure can cause LCD alignment, thus the inclination liquid crystal molecule of passing through penetrate light I
2Light path can have unnecessary light path difference (Δ nd ≠ 0) and cause light leak.Therefore, needing to see through the outer compensate film mode of pasting in addition eliminates light leak to improve contrast.
Fig. 2 is a diagrammatic cross-section, shows the design of another multi-domain vertical alignment liquid crystal displays.As shown in Figure 2, be used in formed cracking (slit) 206 on the transparency electrode 204 of substrate 202, the toppling direction of may command liquid crystal molecule 208 after applying voltage.Yet, form 206 the mode of cracking in electrode 204 places, must think over 206 width and two that the crack distance between 206 or the like of cracking own, otherwise to produce the strength that liquid crystal molecule 208 is toppled over not enough easily by cracking 206.Moreover, crack 206 design of this formation, the energy that causes liquid crystal molecule 208 to rotate toward left and right sides either directions equates, produces discontinuous misorientation defective (disclination) and the orientation of liquid crystal molecule 208 in the space distributed.This misorientation defect area 210 cracks in 206 tops and two of cracking 206 and forms all easily, and reduces whole light transmittance.
Summary of the invention
Therefore, purpose of the present invention is providing a kind of multi-domain liquid crystal display device, and it can avoid the variety of problems of above-mentioned known design.
According to design of the present invention, a kind of multi-domain liquid crystal display device comprises a plurality of first, second pattern assemblies and a plurality of first, second auxiliary electrode.A plurality of first and second pattern assemblies have opposite polarity under the same picture (frame) of an inversion driving sequential control (inversion driving scheme).First auxiliary electrode connects first pattern assembly, and to small part around each second pattern assembly.Second auxiliary electrode connects second pattern assembly, and second auxiliary electrode is to small part around each first pattern assembly, so as to producing fringe field.This inversion driving sequential control can be some counter-rotating (dot inversion), row counter-rotatings (row inversion) or row counter-rotating (column inversion) sequential control.
Form the design of auxiliary electrode by the present invention's inversion timing control model of arranging in pairs or groups, the general thin film transistor (TFT) processing procedure of only need arranging in pairs or groups forms the auxiliary electrode that a distribution mode designs in advance more in addition, can utilize the opposite polarity between the pixel electrode that auxiliary electrode and its center on to obtain multiple domain orientation effect.Compare with known border, the territory regulation structural design of convex body (bump) or concave structure of utilizing, the present invention's each liquid crystal molecule under the state that does not apply voltage (Voff) all is vertical orientation, can avoid light leakage phenomena to produce so can not produce unnecessary light path difference (Δ nd=0).On the other hand, with be known in the electrode place and form the mode crack and compare, the present invention can provide stronger lqiuid crystal molecule tipping strength by the fringe field effect that opposed polarity produced of auxiliary electrode and pixel electrode, to increase the viewing area useful area and effectively to promote whole light transmittance.
Description of drawings
Figure 1A is a diagrammatic cross-section, shows the design of a known multi-domain vertical alignment liquid crystal displays.
Figure 1B is a diagrammatic cross-section, shows the design of another known multi-domain vertical alignment liquid crystal displays.
Fig. 2 is a diagrammatic cross-section, shows the design of another multi-domain vertical alignment liquid crystal displays.
Fig. 3 shows the part section simplified schematic diagram of a multi-domain liquid crystal display device for according to design of the present invention.
Fig. 4 shows the driver module synoptic diagram of a liquid crystal indicator.
Fig. 5 A to Fig. 5 C is a synoptic diagram, is shown under the different inversion timing control models, and same picture (frame) pixel is represented the polarity that writes of signal.
Fig. 6 A and Fig. 6 B are according to one embodiment of the invention, show the synoptic diagram of a multi-domain liquid crystal display device.
Fig. 7 A and Fig. 7 B are the synoptic diagram of explanation auxiliary electrode design concept of the present invention.
Fig. 8 is for showing the synoptic diagram of another embodiment of the present invention.
Fig. 9 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 10 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 11 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 12 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 13 A and Figure 13 B be for showing the synoptic diagram of another embodiment of the present invention, and wherein Figure 13 B is the sectional view that B-B ' the line crosscut along Figure 13 A gets.
Figure 14 A and 14B be for showing the synoptic diagram of another embodiment of the present invention, and wherein Figure 14 B is the sectional view that C-C ' the line crosscut along Figure 14 A gets.
Figure 15 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 16 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 17 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 18 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 19 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 20 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 21 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 22 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 23 is for showing the synoptic diagram of another embodiment of the present invention.
Figure 24 is a synoptic diagram, shows that the present invention uses an example of rotatory polarization system.
Embodiment
Fig. 3 shows the part section simplified schematic diagram of a multi-domain liquid crystal display device (multi-domain LCD) 10 for according to design of the present invention.As shown in Figure 3, LCD 10 comprises toward each other a filter sheet base plate 12 and an active block substrate 14, and folder is established a liquid crystal layer 16 between two substrates.Liquid crystal layer 16 adopts negative dielectric anisotropy (negative dielectric anisotropy) liquid crystal material, makes that liquid crystal molecule is vertical orientation (vertical alignment) when not applying voltage.In addition, can add in the liquid crystal layer 16 to help and revolve adulterant (chiral dopant), to quicken the liquid crystal rotation and to reduce misorientation defective (disclination).On the transparency carrier 18 of active block substrate 14, be formed with changeover module 20 as thin film transistor (TFT) (TFT) and so on, pixel electrode 22, and both alignment layers 24.Be formed with colored filter 28, shading black matrix layer 30, shared electrode 32 and both alignment layers 34 on the transparency carrier 26 of filter sheet base plate 12.
The arrange in pairs or groups multi-domain liquid crystal display device design of reversal of poles sequential control of following explanation the present invention.
At first, Fig. 4 shows driver module 40 synoptic diagram of a liquid crystal indicator.As shown in Figure 4, display control circuit 42 is according to the image and the control data that receive, produce clock signal C K, horizontal-drive signal HSY, vertical synchronizing signal VSY and the data image signal Da etc. that show usefulness, and in feed-in data line drive circuit 44 and the gate line drive circuit 46.Polarity switching circuit 42a in the display control circuit 42 is according to the polarity switch-over control signal Φ of horizontal-drive signal HSY and vertical synchronizing signal VSY generation AC driving liquid crystal panel 50, and this polarity switch-over control signal Φ is in order to the sequential of decision liquid crystal panel 50 reversal of poles.Shared electrode driving circuit 48 produces the share voltage Vcom of the shared electrode of supply liquid crystal panel 50.
Fig. 5 A to Fig. 5 C is a synoptic diagram, and when showing LCD tie point counter-rotating, row counter-rotating or row reverse signal source, same picture (frame) pixel is represented the polarity that writes of signal.Fig. 5 A shows some counter-rotating (dot inversion) sequential control, and Fig. 5 B shows delegation's counter-rotating (column inversion) sequential control, and Fig. 5 C shows row counter-rotating (row inversion) sequential control.Shown in Fig. 5 A to Fig. 5 C, the denominator of these three kinds of inversion timing control models is just can alternately occur under the same picture and negative two kinds of opposed polarities.Therefore, the present invention can utilize this inversion timing control characteristic to carry out multiple domain orientation design.
Fig. 6 A and Fig. 6 B are according to one embodiment of the invention, show the synoptic diagram of a multi-domain liquid crystal display device 60, and wherein Fig. 6 A is the diagrammatic top view of observing from the substrate normal direction, and Fig. 6 B is the sectional view that A-A ' the line crosscut along Fig. 6 A gets.
The diagrammatic top view of Fig. 6 A shows a plurality of pattern assemblies 62 (picture elements) that constitute this multi-domain liquid crystal display device 60.On an active block substrate 14 as shown in Figure 3, be formed with sweep trace (scan line) 66 that multiple tracks is parallel to each other and the data line (data line) 68 that is parallel to each other, and two adjacent sweep traces 66 are orthogonal to two adjacent data lines 68 and define pattern assembly distributed areas.As shown in Figure 6A, a plurality of pattern assemblies 62 are arranged a pattern assembly array that constitutes along horizontal (column direction) and vertical (line direction) simultaneously.In this instructions, " pattern assembly " term is meant the minimum addressing display unit (addressable display unit) in the viewing area of a liquid crystal indicator.For example, in a color liquid crystal display arrangement, each redness (R) of a corresponding pixel, green (G) or blue (B) sub-pixel (sub-pixel) are a pattern assembly.Utilize (+), (-) symbol to mark out pattern assembly 62 polarity under the same picture (frame) on Fig. 6 A simultaneously, because of present embodiment adopts some counter-rotating (dotinversion) sequential control pattern, so all alternately occur in turn in reaching on the column direction on the line direction in the pattern assembly of tool positive polarity (+) under the same picture and the pattern assembly of negative polarity (-).
According to design of the present invention, in the pattern assembly distributed areas that two adjacent sweep traces 66 and two adjacent data lines 68 are defined, be formed with a pattern assembly 62 and in pattern assembly 62 outsides to small part around an auxiliary electrode 64 of this pattern assembly 62.This auxiliary electrode 64 connects adjacent pattern assembly 62, so have the polarity opposite with its pattern assembly that is centered on 62.In detail, as illustrated in Fig. 6 A, auxiliary electrode 64 comprises one around portion and a junction, comprise the strip section 64c and the 64d of the strip section 64a of essence parallel scan lines 66 (extending) and 64b, essence panel data line 68 (following direction extends) around portion along column direction, connecting portion comprise a tool vertically trend strip section 64e with the pixel electrode 56 of bridge joint top and below around section 64a-64d.Therefore, the present invention's design makes each auxiliary electrode that centers on a pattern assembly 62 64, all be connected to another pattern assembly 62 adjacent with its pattern assembly that is centered on, because the some inversion timing control polarity of two adjacent pattern assemblies down just is opposite, so can obtain each auxiliary electrode 64 and its pattern assembly that is centered on 62 opposite polarity results.
The sectional view of Fig. 6 B know display pattern assembly 62 the rete stack architecture and with the relative configuration of auxiliary electrode 64.Shown in Fig. 6 B, the gate insulator of a tool dielectric effect (gate insulator) 52 is formed on the transparency carrier 18, and second metal level of composition data line 68 (metal 2 layer) M2 is formed on the gate insulator 52.The protective seam of one tool dielectric effect (passivation insulator) 54 is arranged on the gate insulator 52 with cover data line 68, and is formed on the protective seam 54 by the pixel electrode 56 that nesa coating constitutes.In pattern assembly distributed areas, auxiliary electrode 64 is formed at layer around pixel electrode 56 and with pixel electrode 56, and both polarity is opposite.The material of auxiliary electrode 64 for example can be nesa coating or metallic conduction material.Must notice that in this auxiliary electrode 64 itself also constitutes the part of viewing area, so can be considered an extension of pixel electrode 56 when auxiliary electrode 64 and pixel electrode 56 are made of nesa coating equally.
Followingly utilize auxiliary electrode 64 to form fringe fields and change the design concept of liquid crystal alignment with Fig. 7 A and Fig. 7 B explanation the present invention.
Shown in Fig. 7 A, when not applying voltage (Voff) as yet, the negative anisotropic liquid crystal molecule 58 of dielectric of tool is vertical orientation, and promptly each liquid crystal molecule 58 is arranged to be close to vertical active block substrate 14 modes.Then, shown in Fig. 7 B, when applying voltage (Von) in shared electrode 32 and pixel electrode after 56 a period of times, because of pixel electrode 56 with around auxiliary electrode 64 polarity is opposite each other, form the direction of an electric field of inclination so produce fringe field effect (fringe field effect) between the two, the anisotropic liquid crystal molecule 58 of the negative dielectric of tool is pointed to rotate to be the direction vertical with the tilting electric field direction.Refer again to Fig. 6 A, according to auxiliary electrode 64 distribution design of the present invention, because of four limits of a pixel electrode 56 respectively by the strip section 64a of essence parallel scan lines 66 and 64b, centered on the strip section 64c and the 64d of essence panel data line 68, so after fringe field causes, can produce four different tilting electric field directions, liquid crystal molecule 58 around making is toppled over toward the center simultaneously and is produced four different liquid crystal molecules tilt directions, and acquisition is partitioned into the effect in the little territory of liquid crystal of the different vergence directions of four tools.
Form the design of auxiliary electrode 64 by the present invention's inversion timing control model of arranging in pairs or groups, the general thin film transistor (TFT) processing procedure of only need arranging in pairs or groups forms the auxiliary electrode 64 that a distribution mode designs in advance more in addition, can utilize the opposite polarity of 56 of auxiliary electrode 64 and its pixel electrodes that is centered on to obtain multiple domain orientation effect.Utilize the design of convex body (bump) or concave structure to compare with known, the present invention's each liquid crystal molecule 58 under the state that does not apply voltage (Voff) all is vertical orientation, can avoid light leakage phenomena to produce so can not produce unnecessary light path difference (Δ nd=0).On the other hand, with be known in the electrode place and form the mode crack and compare, the present invention is by the fringe field effect that opposite polarity produced of 56 of auxiliary electrode 64 and its pixel electrodes that is centered on, can provide stronger lqiuid crystal molecule tipping strength, to increase the viewing area useful area and effectively to promote whole light transmittance.
Fig. 8 is for showing the synoptic diagram of another embodiment of the present invention.Under an inversion timing control model, the pattern assembly 62 of same picture tool positive polarity and negative polarity is in all alternately occurring in turn on the line direction and on the column direction, so as shown in Figure 8, the connecting portion 64e of auxiliary electrode 64 also can form the laterally strip section of trend of tool, with the pixel electrode 56 of bridge joint left and right-hand around section 64a-64d.
Fig. 9 is shown in the present invention's design under row counter-rotating (row inversion) sequential control pattern for showing the synoptic diagram of another embodiment of the present invention.As shown in Figure 9, because of under row inversion timing control model, only follow direction (vertically) in the pattern assembly of same picture tool positive polarity and negative polarity and go up one after the other and occur, thus the connecting portion 64e of auxiliary electrode longitudinally the pixel electrode 56 of bridge joint top and below center on section 64a-64d.
Figure 10 is shown in the present invention's design under delegation's counter-rotating (columninversion) sequential control pattern for showing the synoptic diagram of another embodiment of the present invention.As shown in figure 10, because of under row inversion timing control model, only go up one after the other in the pattern assembly of same picture tool positive polarity and negative polarity and occur, so the connecting portion 64e of auxiliary electrode is along the pixel electrode 56 of horizontal bridge joint left and the right-hand section 64a-64d that centers on along column direction (laterally).
Figure 11 is shown in another design of the present invention under the row inversion timing control model for showing the synoptic diagram of another embodiment of the present invention.As shown in figure 11, an auxiliary electrode 64A comprises two strip sections 65 and 67, the right side of strip section 67 contiguous pattern assembly 62C (negative polarity), and strip section 65 is along the angular direction is connected to a pattern assembly 62A (positive polarity); On the other hand, an auxiliary electrode 64B comprises two strip sections 69 and 71, the left side of strip section 71 adjacent pattern assembly 62C (negative polarity), and strip section 69 is along the angular direction is connected to a pattern assembly 62B (positive polarity).Therefore, the pattern assembly 62C of tool negative polarity is centered on to produce fringe field by strip section 67 and 71 parts respectively, and acquisition is partitioned into the effect in the little territory of liquid crystal of different vergence directions.Moreover, because of between the pattern assembly 62A (positive polarity) of pattern assembly 62C (negative polarity) and its top also because of opposite polarity produces between the pattern assembly 62D (positive polarity) of fringe field and pattern assembly 62C (negative polarity) and its below also because of opposite polarity produces fringe field, so the design of present embodiment can obtain to be partitioned into the effect in the little territory of liquid crystal of four tools difference vergence directions.Hence one can see that, according to design of the present invention, auxiliary electrode 64 does not need to be arranged at four sides of a contiguous pattern assembly 62, only need auxiliary electrode 64 is arranged at least one side of a contiguous pattern assembly 62, that is to small part around this pattern assembly 62, can obtain to be partitioned into the effect in the little territory of liquid crystal of the different vergence directions of four tools.Must notice that in this auxiliary electrode 64 itself also constitutes the part of viewing area, so can be considered an extension of pattern assembly when auxiliary electrode and pixel electrode are made of nesa coating equally.Moreover same pattern assembly 62 for example can be centered on by same auxiliary electrode 64 as shown in figure 10, also can be centered on by two the different auxiliary electrodes (64A, 64B) that are connected to two different pattern assemblies (62A, 62B) respectively as shown in figure 11.
In above-mentioned each embodiment, though the connecting portion of auxiliary electrode 64 and the portion of centering on are illustrated as the strip section and constitute, but its profile, trend and link position do not limit, only need to reach connect auxiliary electrode and pattern assembly, and relative pixel electrode 56 profiles be distributed in its side and utilize the effect of opposite polarity formation fringe field to get final product in order to do obtaining.
Moreover, according to design concept of the present invention as can be known, only need make auxiliary electrode 64 and 56 tool opposite polarities of its pixel electrode that is centered on can produce the fringe field effect, the mode that obtains opposite polarity as for auxiliary electrode 64 does not limit.For example, though the auxiliary electrode 64 of the foregoing description be illustrated as be connected to follow direction, column direction or on the angular direction with its another the most contiguous pixel electrode 56 to obtain opposite polarity, but also the connecting portion of an auxiliary electrode 64 can be prolonged or connecting portion is made of a plurality of strip sections, so as to pixel electrode that this connecting portion jumper connection to this auxiliary electrode 64 is centered on 56 another more contiguous pixel electrode 56 arround it, can make this auxiliary electrode 64 have the polarity opposite equally with its pixel electrode that is centered on 56.
Figure 12 is a diagrammatic cross-section, shows another embodiment design of tool bed hedgehopping layer of the present invention.As shown in figure 12, after forming protective seam 54, can deposit a planarization layer 55 again, again pixel electrode 56 and auxiliary electrode 64 are formed on the planarization layer 55 afterwards, but bed hedgehopping pixel electrode 56 positions like this are to obtain to improve the effect of aperture opening ratio.Perhaps, protective seam 54 also can be omitted, and gets final product and directly form planarization layer 55 on gate insulator 52.
Figure 13 A and Figure 13 B be for showing the synoptic diagram of another embodiment of the present invention, and wherein Figure 13 B is the sectional view that B-B ' the line crosscut along Figure 13 A gets.The present invention produces fringe field under reversal of poles sequential control pattern mode does not limit.As shown in FIG. 13A, the auxiliary electrode 64 around each pixel electrode 56 can utilize the first metal layer (metal 1 layer) M1 to constitute.The clear interconnection line distribution mode of utilizing the first metal layer M1 to constitute auxiliary electrode 64 that shows of the diagrammatic cross-section of Figure 13 B.Shown in Figure 13 B, the pixel electrode 56 of tool positive polarity in pattern assembly distributed areas " connect the source/drain region 74 of a thin film transistor (TFT) via contact hole 72a; and and be made of the first metal layer M1 in the adjacent pattern assembly distributed areas and be formed at auxiliary electrode 64 with layer with sweep trace 66; also be connected to same source/drain region 74 and tool positive polarity via contact hole 72b, the auxiliary electrode 64 of the pixel electrode 56 ' of tool negative polarity and tool positive polarity is a tool opposite polarity and produce the fringe field effect in the same pattern assembly like this distributed areas.
Figure 14 A and Figure 14 B be for showing the synoptic diagram of another embodiment of the present invention, and wherein Figure 14 B is the sectional view that C-C ' the line crosscut along Figure 14 A gets.Shown in Figure 14 A, the auxiliary electrode 64 that centers on each pixel electrode 56 can utilize second metal level (metal 2 layer) M2 to constitute.The clear interconnection line distribution mode of utilizing the second metal level M2 to constitute auxiliary electrode 64 that shows of the diagrammatic cross-section of Figure 14 B.As shown in Figure 14B, the pixel electrode 56 of tool negative polarity in pattern assembly distributed areas " connect the source/drain region 74 of a thin film transistor (TFT) via contact hole 72c; and and be made of the second metal level M2 in the adjacent pattern assembly distributed areas and also be connected to same source/drain region 74 and the tool negative polarity with auxiliary electrode 64 that data line 68 (not icon) is formed at layer, the pixel electrode 56 ' of tool positive polarity and tool negative polarity auxiliary electrode 64 are tool opposite polarity and produce the fringe field effect in the same pattern assembly like this distributed areas.
By each above-mentioned enforcement profit as can be known, auxiliary electrode 64 of the present invention only need and produce the fringe field effect based on opposite polarity around pixel electrode 56 and get final product, its generation type does not limit fully, be formed at layer with pixel electrode 56, or utilize the first metal layer M1, the second metal level M2 constitute all can, the corresponding interconnection line distribution mode of only need arranging in pairs or groups again gets final product.Moreover sweep trace 66 constitutes with the ground floor metal and data line 68 constitutes with second layer metal though the foregoing description is illustrated as, and also sweep trace 66 can be constituted with the ground floor metal with second layer metal formation and data line 68.In addition, no matter which kind of structure auxiliary electrode 64 adopts form, and a counter-rotating of all can arranging in pairs or groups as described above, row counter-rotating or row inversion timing control model are to produce the fringe field effect.Figure 15 is for showing the synoptic diagram of another embodiment of the present invention.As shown in figure 15, in pattern assembly distributed areas, can form an order font around the auxiliary electrode 64 of pixel electrode 56 and distribute, and single pattern assembly 62 is divided into three sub-pattern assembly 62a, 62b, 62c.In other words, pixel electrode 56 in a pattern assembly 62 is divided into three rectangular area 56a, 56b, 56c by auxiliary electrode 64, strip section around each four side in rectangular area can cause four liquid crystal molecules tilt directions respectively, so each rectangular area can independently cause block as an edge electric field.As shown in figure 16, auxiliary electrode 64 also can form font distribution on the one and single pattern assembly 62 is divided into two sub-pattern assembly 62d and 62e.Certainly, this partitioning scheme does not limit and all can obtain effect of the present invention, gets over for a long time when the region quantity that is partitioned into, and then the liquid crystal reaction velocity is fast more, so the distribution mode of auxiliary electrode 64 is adjusted in visual actual demand.
Figure 17 is for showing the synoptic diagram of another embodiment of the present invention, and another pattern assembly that is shown under the row inversion timing control model is cut apart design.As shown in figure 17, each pattern assembly is centered on by auxiliary electrode 64 ' part, and each pattern assembly 62 ' is divided into two sub-pattern assembly 62a ' and 62b ' by auxiliary electrode 64 '.Perhaps, also can be as shown in figure 18, each pattern assembly is divided into three sub-pattern assembly 62c ', 62d ' and 62e ' by auxiliary electrode.Moreover, as shown in figure 19, also can only utilize electrode to crack and 69 cut apart each pattern assembly, or utilize electrode to crack as shown in figure 20 69 to be alternately distributed mode with auxiliary electrode 64 and to cut a pattern assembly.In addition, auxiliary electrode 64 it provide the distribution mode of the section of cutting apart sub pattern assembly effect not limit, for example can be as shown in figure 20, and different cut section all are connected to same pattern assembly, or can be as shown in figure 21, different cut section are connected to different pattern assemblies respectively.
Moreover, the above-mentioned mode that the single pattern assembly is divided into a plurality of sub pattern assemblies, the inversion timing control model that can arrange in pairs or groups different equally, for example illustrative some reversing mode of Figure 15, the illustrative row reversing mode of Figure 16 or row reversing mode all can, only need adjust the distribution and the connected mode of auxiliary electrode 64, allow each sub pattern assembly 62a-62e that is partitioned into have opposite polarity and get final product with the auxiliary electrode 64 that centers on.In addition, one cut apart in the pattern assembly design in this, the formation of auxiliary electrode 64 does not limit equally.For example, auxiliary electrode 64 can be formed at layer with pixel electrode 56d, 56e as shown in figure 15, also can be as shown in figure 22, and auxiliary electrode 64 is made of the second metal level M2 and the single pattern assembly is divided into a plurality of sub pattern assembly 62a, 62b, reaches 62c.Certainly, the auxiliary electrode 64 of cutting apart the single pattern assembly also can be made of the first metal layer M1.
According to design of the present invention, the pixel electrode 56 that auxiliary electrode 64 centers on it only need be kept opposite polarity and cause that the fringe field effect gets final product, and its external form does not limit and the variation of visual actual needs fully.For example, as shown in figure 23, pixel electrode 56 and auxiliary electrode 64 can the corresponding external forms that forms tool circular arc lead angle, so help under the occasion of revolving adulterant in interpolation, can effectively increase each regional printing opacity homogeneity of a pattern assembly.
In addition, according to design of the present invention, the rotatory polarization system that also can fit in the liquid crystal cells outside is to increase light transmittance.As shown in figure 24, for example can between upper substrate 26 and Polarizer 76a, and infrabasal plate 18 and Polarizer 76b between 1/4 wavelength plate (quarter wave plate) 78a and 78b are set respectively, and two 1/4 wavelength plates all with the polarization axle clamp miter angle of Polarizer, a line polarisation system can be converted to a rotatory polarization system.
The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim, but not be defined in the above embodiments its equivalent modifications of carrying out or change.
Claims (22)
1. multi-domain liquid crystal display device comprises:
A plurality of first and a plurality of second pattern assembly, described first and second pattern assembly has opposite polarity under the same picture of an inversion driving sequential control;
Multiple tracks sweep trace and multiple tracks data line, this data line that this sweep trace that wherein every twice are adjacent is adjacent with every twice defines pattern assembly distributed areas, and each pattern assembly distributed areas is distributed with this first pattern assembly or this second pattern assembly;
A plurality of first auxiliary electrodes connect described first pattern assembly and to small part around this second pattern assembly respectively, and respectively this first auxiliary electrode is distributed in these pattern assembly distributed areas; And
A plurality of second auxiliary electrodes connect described second pattern assembly and to small part around this first pattern assembly respectively, and respectively this second auxiliary electrode is distributed in these pattern assembly distributed areas.
2. multi-domain liquid crystal display device as claimed in claim 1, wherein respectively at least one side of contiguous respectively this second pattern assembly of this first auxiliary electrode and the respectively contiguous respectively at least one side of this first pattern assembly of this second auxiliary electrode.
3. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein this inversion driving sequential control is some counter-rotatings, row counter-rotating or the control of row inversion timing.
4. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein this pattern assembly is red, a blue or green sub-pixels.
5. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein respectively this auxiliary electrode comprises a plurality of strip sections.
6. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein said first and second pattern assembly is alternately arranged and is formed a pattern assembly array, and described first and second auxiliary electrode connects described first and second pattern assembly along the line direction of this pattern assembly array, column direction or to the angular direction respectively.
7. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein respectively this first auxiliary electrode is connected to single first pattern assembly of its correspondence, and respectively this second auxiliary electrode is connected to single second pattern assembly of its correspondence.
8. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein respectively this first pattern assembly is centered on by two different second auxiliary electrodes institute to small part, and respectively this second pattern assembly is centered on by two different first auxiliary electrodes institute to small parts.
9. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein respectively this first pattern assembly is centered on by single second auxiliary electrode institute to small part, and respectively this second pattern assembly is centered on by single first auxiliary electrode institute to small part.
10. multi-domain liquid crystal display device as claimed in claim 1 or 2, wherein respectively this pattern assembly comprises a plurality of sub pattern assemblies, and respectively this sub pattern assembly centers on by described first and second auxiliary electrode institute to small part.
11. a multi-domain liquid crystal display device comprises:
One first and one second transparency carrier toward each other;
One liquid crystal layer, be situated between be located at this first and this second transparency carrier between, the negative anisotropic liquid crystal molecule material of dielectric of this liquid crystal layer tool constitutes;
One shares electrode, is arranged on this first transparency carrier;
Multiple tracks first signal wire is formed on this second transparency carrier;
One first dielectric layer is formed on this second transparency carrier and covers described first signal wire;
Multiple tracks secondary signal line is formed on this first dielectric layer;
One second dielectric layer is formed on this first dielectric layer and covers described secondary signal line;
A plurality of pixel electrodes are formed on this second dielectric layer; And
A plurality of auxiliary electrodes, respectively this auxiliary electrode is formed on this second transparency carrier and to small part around this pixel electrode respectively, and respectively this auxiliary electrode be formed on this first dielectric layer, on this second dielectric layer or between this second transparency carrier and this first dielectric layer;
Wherein when voltage puts between this shared electrode and described pixel electrode, each auxiliary electrode to small part around each pixel electrode, with the pixel electrode that centers on by this auxiliary electrode to small part have opposite polarity.
12. multi-domain liquid crystal display device as claimed in claim 11, wherein this multi-domain liquid crystal display device has some counter-rotating, row counter-rotating or row reverse signal source.
13. multi-domain liquid crystal display device as claimed in claim 11, wherein under the same picture of an inversion driving sequential control, described a plurality of pixel electrodes comprise a plurality of first pixel electrodes of alternatively distributed tool first polarity and a plurality of second pixel electrodes of tool second polarity.
14. multi-domain liquid crystal display device as claimed in claim 11, wherein respectively this auxiliary electrode is the extension of its pairing pixel electrode on this second dielectric layer.
15. multi-domain liquid crystal display device as claimed in claim 11, wherein respectively this first signal wire is made of a ground floor metal, and respectively this auxiliary electrode is made of described ground floor metal.
16. multi-domain liquid crystal display device as claimed in claim 11, wherein respectively this secondary signal line is made of a second layer metal, and respectively this auxiliary electrode is made of described second layer metal.
17. multi-domain liquid crystal display device as claimed in claim 11, wherein this second dielectric layer is constituted or is made of a protective seam and the planarization layer that is formed on this protective seam by a protective seam.
18. multi-domain liquid crystal display device as claimed in claim 11, wherein respectively this pixel electrode is formed with at least one electrode and cracks, and respectively this pixel electrode cracks via described auxiliary electrode or electrode and is separated out the block of a plurality of generation one edge electric fields.
19. multi-domain liquid crystal display device as claimed in claim 11 also comprises:
One first Polarizer is arranged at this first transparency carrier outside of this liquid crystal layer relatively;
One second Polarizer is arranged at this second transparency carrier outside of this liquid crystal layer relatively;
One the 1 wavelength plate is arranged between this first Polarizer and this first transparency carrier; And
One the 2 1/4 wavelength plate is arranged between this second Polarizer and this second transparency carrier.
20. multi-domain liquid crystal display device as claimed in claim 11, wherein this liquid crystal layer comprises to help and revolves dopant material.
21. a multi-domain liquid crystal display device comprises:
A plurality of first pattern assemblies, respectively this first pattern assembly has one first extension;
A plurality of second pattern assemblies, respectively this second pattern assembly has one second extension, and described first and second pattern assembly has opposite polarity under the same picture of an inversion driving sequential control; Multiple tracks sweep trace and multiple tracks data line, this data line that this sweep trace that wherein every twice are adjacent is adjacent with every twice defines pattern assembly distributed areas, and each pattern assembly distributed areas is distributed with this first pattern assembly or this second pattern assembly;
A plurality of first auxiliary electrodes connect described first pattern assembly and to small part around this second pattern assembly respectively, and respectively this first auxiliary electrode is distributed in these pattern assembly distributed areas;
A plurality of second auxiliary electrodes connect described second pattern assembly and to small part around this first pattern assembly respectively, and respectively this first auxiliary electrode is distributed in these pattern assembly distributed areas;
Wherein respectively this first extension is close to respectively at least one side of this second pattern assembly, and respectively this second extension is close to respectively at least one side of this first pattern assembly.
22. multi-domain liquid crystal display device as claimed in claim 21, wherein respectively this pattern assembly comprises a plurality of sub pattern assemblies, and respectively this sub pattern assembly centers on by described first and second extension institute to small part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610101758XA CN100480794C (en) | 2006-07-10 | 2006-07-10 | Multiple-domain liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610101758XA CN100480794C (en) | 2006-07-10 | 2006-07-10 | Multiple-domain liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105584A CN101105584A (en) | 2008-01-16 |
| CN100480794C true CN100480794C (en) | 2009-04-22 |
Family
ID=38999551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610101758XA Expired - Fee Related CN100480794C (en) | 2006-07-10 | 2006-07-10 | Multiple-domain liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100480794C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI447480B (en) * | 2009-10-02 | 2014-08-01 | Hiap L Ong | Multi-domain vertical alignment liquid crystal displays using pixels having fringe field amplifying regions |
| CN102073175B (en) * | 2009-11-25 | 2014-08-13 | 上海天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| TWI431364B (en) * | 2010-03-10 | 2014-03-21 | Kyoritsu Optronics Co Ltd | Liquid crystal displays having color dots with embedded polarity regions |
| TWI477866B (en) * | 2010-03-10 | 2015-03-21 | Kyoritsu Optronics Co Ltd | Pixels having extra-planar fringe field amplifiers for multi-domain vertical alignment liquid crystal displays |
| CN103226274B (en) | 2013-04-23 | 2015-09-30 | 京东方科技集团股份有限公司 | Array base palte and driving method thereof and electrochromic display device (ECD) |
| CN109188794A (en) * | 2018-10-15 | 2019-01-11 | 惠科股份有限公司 | Display panel and display device |
| US20200117059A1 (en) * | 2018-10-15 | 2020-04-16 | HKC Corporation Limited | Display panel and display device |
-
2006
- 2006-07-10 CN CNB200610101758XA patent/CN100480794C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101105584A (en) | 2008-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100480794C (en) | Multiple-domain liquid crystal display | |
| US7440039B2 (en) | Active element substrate with simplified signal line arrangement having active elements and pixel electrodes and liquid crystal display device using the same | |
| US20040227890A1 (en) | Liquid crystal display panel of horizontal electric field applying type | |
| US7663708B2 (en) | Multi-domain liquid crystal display | |
| CN102566157B (en) | Array substrate and liquid crystal display | |
| KR101471547B1 (en) | Liquid crystal display | |
| CN102193261B (en) | Liquid crystal display | |
| CN207020431U (en) | A kind of liquid crystal display panel with Novel pixel design | |
| CN101833209B (en) | Pixels for liquid crystal displays | |
| CN107589602A (en) | A kind of liquid crystal display panel with Novel pixel design | |
| US9244314B2 (en) | Liquid crystal display | |
| US20090295694A1 (en) | Liquid Crystal Display and Array Substrate Thereof | |
| US20160147119A1 (en) | Liquid crystal display | |
| KR101526262B1 (en) | Liquid crystal display device and electronic apparatus | |
| CN102449545A (en) | Liquid crystal display device | |
| CN100390616C (en) | Inner switchover liquid crystal display device | |
| CN102629047B (en) | Pixel unit, array substrate, liquid crystal panel and display equipment | |
| CN102073175A (en) | Liquid crystal display panel and liquid crystal display device | |
| US20220317523A1 (en) | Display panel and display device | |
| CN100541277C (en) | Lcd | |
| CN101738802B (en) | Liquid crystal display panel and liquid crystal display device | |
| CN100510864C (en) | Multi-domain LCD | |
| CN101424833B (en) | Multi-domain LCD | |
| CN102449546A (en) | Liquid crystal display device | |
| CN101483179B (en) | Thin-film transistor array substrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KYORITSU OPTRONICS CO. LTD Effective date: 20120214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120214 Address after: Taichung County, Taiwan, China Co-patentee after: salary Optronics Co., Ltd. Patentee after: Shenghua Science and Technology Co., Ltd. Address before: Taichung County, Taiwan, China Patentee before: Shenghua Science and Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20180710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |