CN103135289B - Liquid crystal display device having a plurality of pixel electrodes - Google Patents
Liquid crystal display device having a plurality of pixel electrodes Download PDFInfo
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- CN103135289B CN103135289B CN201110374544.0A CN201110374544A CN103135289B CN 103135289 B CN103135289 B CN 103135289B CN 201110374544 A CN201110374544 A CN 201110374544A CN 103135289 B CN103135289 B CN 103135289B
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- 210000002858 crystal cell Anatomy 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
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- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
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Abstract
A liquid crystal display device comprising: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal molecular layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal molecular layer is arranged between the first substrate and the second substrate; the first substrate includes: a first common electrode provided on an inner side with respect to the second substrate; the second substrate includes: a plurality of mutually insulated and intersected scanning lines and data lines which are arranged on the inner side relative to the first substrate and define a plurality of sub-pixel regions; the sub-pixel region comprises a switch element and a sub-pixel electrode; the switching element is electrically connected with the scanning line, the data line and the sub-pixel electrode; when the first common electrode and the sub-pixel electrode obtain driving signals, an oblique electric field for driving liquid crystal molecules to pre-tilt is formed between the first common electrode and the sub-pixel electrode. The invention can reduce the production cost, simplify the manufacturing process and improve the product performance.
Description
Technical field
The present invention relates to field of liquid crystal display, relate in particular to a kind of liquid crystal indicator of wide viewing angle.
Background technology
Liquid crystal indicator is because have the advantages that space hold rate is low, energy consumption is lower, thereby extensively shouldFor handheld information interchange terminal and various demonstrations field. Liquid crystal indicator comes by electric field controlsLiquid Crystal Molecules Alignment direction in the time of the light transmission liquid crystal layer of light source, changes transmissivity and shows image. RootAccording to concrete principle difference, liquid crystal indicator is by till now arranged vertically of early stage TN mode development(VA) pattern and plane conversion (In-PlaneSwitching, IPS) pattern.
(VerticallyAligned arranged vertically; VA) pattern is a kind of wide viewing angle skill of liquid crystal indicatorArt, specifically, the liquid crystal indicator of VA pattern comprises, first substrate, second substrate and be positioned atLiquid crystal layer between first substrate and second substrate, described liquid crystal layer comprises multiple liquid crystal molecules, described liquidBrilliant molecule is negative liquid crystal; Respectively at the electrode of first substrate, second substrate, for example, tin indium oxide (ITO)On electrode, when on-load voltage, can produce biasing electric field, described biasing electric field makes liquid crystal molecule from perpendicular to basePlate is arranged to turn to and is parallel to base plan and topples over, and coordinates the setting of polaroid and backlight and has produced light pathPoor, realize the demonstration of image with this.
In the liquid crystal indicator of VA pattern, in the time not powering up, due to the fixed work of PI film surface configuration rivetingWith, liquid crystal molecule vertical substrate is arranged, and almost there is no inclination angle, if do not give liquid crystal molecule one in the time powering upThe direction of individual pre-dumping, liquid crystal molecule mixed and disorderly orientation in the time of deflection. The deflection of this mixed and disorderly orientationNot only will expend the extremely long response time, and random deflection meeting forms multiple mixed and disorderly farmlands, farmland withThe farmland line of farmland intersection cannot deflection due to liquid crystal molecule, becomes invalid viewing area, corresponding reductionThe actual aperture rate of pixel. Therefore, the deflection situation of manual control liquid crystal molecule is of VA patternImportant topic.
At present, solve improving one's methods of the random deflection of liquid crystal molecule and mainly contain two kinds: one is that multidomain is hung downStraight orientation (Multi-domainVerticalAlignment, MVA), it is to make one at ITO electrode surfaceThe projection of setting shape so that liquid crystal molecule to obtain inclination riveting fixed, do not executing under alive state, orientation inThe liquid crystal molecule of vertical direction can be because of projection slightly inclined, the deflection of liquid crystal molecule in the situation that of pre-dumpingDirection is just under control. Another kind be image vertically adjust (PatternedVerticalAlignment,PVA), its be on the ITO of upper and lower base plate electrode scribing slit with form tilting electric field and ITO edge side toElectric field, utilizes the electric field of regular incline direction to determine the yawing moment of liquid crystal molecule. Above two kinds of skillsIt is 200610115796.0,200510082855.4 and that art can be consulted Chinese Patent Application No. in detail200810043312.5 file. But above-mentioned two kinds of method complex manufacturing technology, increase process costs.
Summary of the invention
The problem that the present invention solves is to provide a kind of liquid crystal indicator, can reduce production costs, and simplifiesManufacture craft.
For addressing the above problem, the invention provides a kind of liquid crystal indicator, comprising:
The first substrate being oppositely arranged and second substrate, and be arranged at described first substrate and described secondLayer of liquid crystal molecule between substrate;
Described first substrate comprises: be arranged at the first common electrode with respect to the inner side of second substrate;
Described second substrate comprises: be arranged at respect to many mutually insulateds of the inner side of first substrate and intersectScan line and data wire, described multi-strip scanning line and data wire limit multiple subpixel area; Described sonPixel region comprises switch element and pixel electrode; Described switch element and described scan line, data wireAnd pixel electrode electrical connection;
In the time of the first common electrode and pixel electrode acquisition driving signal, the first common electrode and sub-pixelBetween electrode, form the oblique electric field that drives liquid crystal molecule pre-dumping.
Alternatively, the liquid crystal molecule of described layer of liquid crystal molecule is negative liquid crystal.
Alternatively, described subpixel area is rectangle, and its long limit size range comprises: 60 μ m～150 μ m.
Alternatively, the ratio of the distance between adjacent described pixel electrode and the long limit size of pixel electrodeScope comprises: 1/12～1/2.
Alternatively, described switch element is thin film transistor (TFT), comprising: grid, be electrically connected on scan line,For carrying out conducting according to scan line or turn-offing operation; Source electrode, is electrically connected on data wire, for receiving numberThe number of it is believed that; Drain electrode, is electrically connected on pixel electrode.
Alternatively, described switch element and described scan line are arranged on the zone line of described pixel electrode.
Alternatively, described switch element and rectangular area corresponding to described scan line are set to echo area, instituteState echo area and be provided with reflective metal layer.
Alternatively, be provided with reflection protrusion below described reflective metal layer, for realizing diffuse reflection.
Alternatively, the liquid crystal cell of described echo area is thick is the half that transmission area liquid crystal cell is thick.
Alternatively, the edge of adjacent described pixel electrode is provided with pre-dumping projection, described reflection protrusion andThe material of described pre-dumping projection is all organic film, and forms in same step.
Alternatively, the edge of adjacent described pixel electrode arranges pre-dumping projection.
Alternatively, described pre-dumping projection has inclined-plane, and described inclined-plane is in adjacent pixel electrodeHeart region.
Alternatively, the angular range between described inclined-plane and horizontal plane comprises 30 degree～70 degree.
Compared with prior art, the present invention has the following advantages:
1) liquid crystal indicator provided by the invention is not increasing under the prerequisite of any technique, due to sub-pixelElectrode is smaller, and therefore, in the time of the first common electrode and pixel electrode acquisition driving signal, first sharesBetween electrode and pixel electrode, form an oblique electric field, this oblique electric field can drive liquid crystal moleculeCarry out pre-dumping, the deflection that impels liquid crystal molecule to produce specific pre-dumping direction, has formed multiple regular farmlands,Improve response speed, realized wide viewing angle, and improved aperture opening ratio. Meanwhile, liquid crystal of the present inventionShowing device, compared with existing MVA method, does not need to form the technique of projection, and technique is relatively simple,Be beneficial to and control cost, and there will not be dark state light leak and cause contrast decline phenomenon; With existingPVA method is compared, and need not make photoetching treatment to the ito glass of color film side, also reduced production cost andProcess complexity.
2) in possibility, the ratio of the interelectrode distance of adjacent subpixels and the long limit size of pixel electrodeScope can comprise 1/12～1/2, thereby both can ensure to form between the first common electrode and pixel electrodeBe the oblique electric field that drives liquid crystal molecule pre-dumping, can ensure that again the aperture opening ratio of subpixel area is higher.
3), in possibility, switch element and scan line can be arranged on the zone line of pixel electrode,Distribute thereby can produce symmetrical multidomain in pixel electrode, finally can improve display effect.
4) in possibility, on pixel electrode in the rectangular region corresponding with switch element and scan lineCan be set to echo area, described echo area is provided with reflection protrusion and reflective metal layer, can realize lightDiffuse reflection, thereby realized the wide viewing angle of liquid crystal indicator, and make liquid crystal indicator both passableBe operated in transmission mode, also can be operated in reflective-mode.
5), in possibility, the liquid crystal cell of echo area can also be set thick is the thick half of transmission area liquid crystal cell,Thereby it is thick to realize Double liquid crystal box, utilize the TFT just can driven element pixel electrode and realize transmissionMate with the Gamma under reflective-mode, to reach optimal display result.
6) in possibility, the fringe region of adjacent subpixels electrode arranges pre-dumping projection, and described pre-dumping is protrudingRise and there is inclined-plane, and described inclined-plane is towards the central area of adjacent pixel electrode, to sub-pixel electricityThe liquid crystal molecule pre-dumping effect at utmost point edge, can better realize multidomain and show.
Brief description of the drawings
Fig. 1 is the three-dimensional exploded view of liquid crystal indicator in first embodiment of the invention;
Fig. 2 is the structural representation of display floater in first embodiment of the invention;
Fig. 3 is the liquid crystal molecule view before first embodiment of the invention liquid crystal indicator powers on;
Fig. 4 is the liquid crystal molecule view of first embodiment of the invention liquid crystal indicator while powering on;
Fig. 5 is the liquid crystal molecule view after first embodiment of the invention liquid crystal indicator powers on;
Fig. 6 is the pixel region structural representation of first embodiment of the invention liquid crystal indicator;
Fig. 7 is the subpixel area structural representation of first embodiment of the invention liquid crystal indicator;
Fig. 8 is the subpixel area structural representation of second embodiment of the invention liquid crystal indicator;
Fig. 9 is the structural representation along AA direction obtains in Fig. 8;
Figure 10 is the subpixel area structural representation of third embodiment of the invention liquid crystal indicator;
Figure 11 is the structural representation along CC direction obtains in Figure 10;
Figure 12 is the subpixel area structural representation of further embodiment of this invention;
Figure 13 is the subpixel area structural representation of another embodiment of the present invention.
Detailed description of the invention
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawingThe specific embodiment of the present invention is described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, but thisBrightly can also adopt other to be different from alternate manner described here to implement, below therefore the present invention is not subject toThe restriction of disclosed specific embodiment.
The invention provides a kind of liquid crystal indicator, it utilizes the first common electrode and the less sub-picture of sizeOblique electric field between element electrode drives liquid crystal molecule to specific direction pre-dumping, forms multiple regular farmlands,Improve response speed, realized wide viewing angle, and improved aperture opening ratio; Meanwhile, liquid crystal of the present inventionShowing device needn't be as will be additionally made projection in prior art or scribing slit is controlled liquid crystal on electrodeThe pre-dumping direction of molecule, technique is relatively simple, is beneficial to and controls cost.
Be elaborated below in conjunction with accompanying drawing.
Fig. 1 shows the three-dimensional exploded view of liquid crystal indicator the first embodiment of the present invention. As shown in Figure 1,The present embodiment liquid crystal indicator 1 comprises display floater 10, is used to display floater 10 that sweep signal is providedScan line drive circuit 12 and be used to display floater 10 provide data-signal data wire drive electricityRoad 14. Wherein, multi-strip scanning line 120 is electrically connected with described scan line drive circuit 12, many data wires140 are electrically connected with described data line drive circuit 14, wherein phase between scan line 120 and data wire 140Insulation and crossing setting mutually.
Described display floater 10 comprises: the first substrate 101 being oppositely arranged and second substrate 102, also bagDraw together and be arranged at first common electrode 103 of first substrate 101 with respect to the inner side of second substrate 102, be positioned atThe crossing scan line 120 of many mutually insulateds that second substrate 102 arranges with respect to first substrate 101 inner sidesWith data wire 140, described multi-strip scanning line 120 and data wire 140 limit multiple subpixel area 106;Described subpixel area 106 comprises switch element 107 and pixel electrode 108; Described switch element 107Be electrically connected with described scan line 120, data wire 140 and pixel electrode 108; Be arranged at second substrateThe second common electrode 104 of 102 inner sides with respect to first substrate 101, described the second common electrode 104And pixel electrode 108 and between insulating barrier (not shown) form memory capacitance; Be arranged at firstLayer of liquid crystal molecule 105 between substrate 101 and second substrate 102.
As shown in Figure 2, in the time of the first common electrode 103 and pixel electrode 108 acquisition driving signal,Between the first common electrode 103 and pixel electrode 108, form and drive the oblique of liquid crystal molecule 1051 pre-dumpingsElectric field. Described first substrate 101 can be CF substrate, and described second substrate 102 can be TFT basePlate. Described pixel electrode 108 and the first common electrode 103 are transparency electrode, for example, be indium oxideTin (ITO) or indium zinc oxide (IZO). In the present embodiment, liquid crystal indicator can show mould for VAFormula, described liquid crystal molecule is negative liquid crystal molecule.
The operation principle of the liquid crystal indicator of the present invention first being implemented below in conjunction with Fig. 2 to Fig. 5 is done toolBody explanation:
Referring to figs. 2 and 3 shown in, liquid crystal molecule 1051 is club shaped structure, described layer of liquid crystal molecule 105While not powering up, liquid crystal molecule 1051 all arrange by vertical first substrate 101 and second substrate 102. InstituteWhen stating liquid crystal indicator work and showing if 1,051 one of the liquid crystal molecules to layer of liquid crystal molecule 105 are not predeterminedIncline direction, liquid crystal molecule 1051 can tilt and cause random farmland to direction arbitrarily.
With reference to figure 4, simultaneously with reference to figure 2, as shown in the figure, when applying in described the first common electrode 103Common signal and apply picture element signal on pixel electrode 108 time, the first common electrode 103 and sonBetween pixel electrode 108, produce and drive the liquid crystal molecule 1051 of layer of liquid crystal molecule 105 to pixel electrode 108The oblique electric field of central area pre-dumping. In Fig. 2 electric field line 100 illustrate described oblique electric field direction andElectric-field intensity. As can be seen from Figure 2, originally vertical first substrate 101 and second substrate 102 are arrangedLiquid crystal molecule 1051 be subject to the effect of an oblique electric field force, described oblique electric field force can resolve intoA vertical component V2 and a horizontal component V1, horizontal component V1 can drive liquid crystal molecule 1051Central area to pixel electrode 108 tilts.
The suffered oblique electric field power maximum of liquid crystal molecule at pixel electrode 108 edges, the closer to sub-pictureSuffered the first common electrode 103 and the pixel electrode 108 of liquid crystal molecule of element electrode 108 central areasBetween the effect of vertical electric field stronger, so the first common electrode 103 and pixel electrode 108 itBetween while producing driving voltage, the liquid crystal molecule of pixel electrode 108 fringe regions can drive other liquid crystal to divideSon tilts to the central area of pixel electrode 108, thereby forms multidomain, reaches visual angle homogeneous and shows.
Shown in figure 5, the liquid crystal molecule of described layer of liquid crystal molecule 105 with the incline direction be scheduled to fromThe edge of pixel electrode 108 after the direction pre-dumping of pixel electrode 108 central areas, every height pictureThe angle of the liquid crystal molecules tilt that element electrode 108 drives is by pixel electrode 108 and the first common electrodeVoltage difference between 103 determines, is determined specifically by its vertical component V2, makes corresponding different sonThereby the angle that the liquid crystal molecules tilt of pixel electrode 108 is different shows different GTGs.
The advantage of liquid crystal indicator provided by the invention is: at the first common electrode and pixel electrodeObtain while driving signal, between the first common electrode and pixel electrode, form an oblique electric field, thisOblique electric field can drive liquid crystal molecule to carry out pre-dumping, impels liquid crystal molecule inclined to one side with specific pre-dumping directionTurn, formed multiple regular farmlands, improved response speed, realized wide viewing angle. Meanwhile, of the present inventionLiquid crystal indicator, compared with existing MVA method, does not need to form the technique of projection, and technique is relativeSimply, be beneficial to and control cost, and there will not be dark state light leak and cause contrast decline phenomenon; WithExisting PVA method is compared, and need not do and carve seam processing the first common electrode of color film side, has reduced lifeProduce cost and process complexity.
Shown in figure 6, in the present embodiment, pixel electrode is rectangle. Three adjacent sub-pixel electricityCorresponding different color diaphragm area and be defined as red sub-pixel electrode R, green sub-pixels electrode G extremely respectivelyOr blue subpixels electrode B, and adjacent red sub-pixel electrode R, green sub-pixels electrode G and indigo plantSub-pixels electrode B forms a pixel. The minor face of pixel electrode is D1, the long limit of pixel electrodeFor D2, described minor face D1 is less than or equal to long limit D2, between two neighbouring pixel electrode two minor facesSpacing distance be D3, between adjacent long limits of two pixel electrodes two, left and right, the distance at interval is D4.
In order to ensure that oblique electric field can drive all liquid crystal molecules to make it have predetermined slope trend,The size of described pixel electrode can not be too large. Reason is described above, the closer to pixel electrode centerThe liquid crystal molecule in territory is subject to vertical electric field power the power stronger and oblique electric field that is subject to can be more weak, as fruit pictureThe larger-size words of element electrode, the liquid crystal molecule of pixel electrode central area can form random farmland. OneAs, the horizontal component V1 that ensure oblique electric field force can drive near pixel electrode central areaThe good display effect of liquid crystal molecule guarantee. Inventor determines by repetition test: every height is setThe scope of the long limit D2 of pixel electrode can reach above requirement at 60 μ m～150 μ m, as: sub-pixelThe long limit D2 of electrode is 60 μ m, 70 μ m or 80 μ m etc.
In addition, the spacing between adjacent pixel electrode can not be too near, otherwise pixel electrode and firstElectric field between common electrode will approach vertical electric field instead of oblique electric field completely, and reason is as carried aboveArrive, the effect that is subject to oblique electric field the closer to the centre position of subpixel area is less, thereby easierPresent vertical or random farmland, therefore the long limit chi of the distance between adjacent described pixel electrode and pixel electrodeVery little ratio is more than or equal to 1/12; But the distance of adjacent subpixels electrode can not be too far away, otherwise can subtractLittle aperture opening ratio, the therefore ratio of the distance between adjacent described pixel electrode and the long limit size of pixel electrodeBe less than or equal to 1/2.
In sum, the spacing distance between neighbouring two pixel electrode two minor faces in the present embodimentFor D3, the distance that two adjacent pixel electrodes two of left and right are grown interval between limits is D4, and D3 equals D4And be referred to as the interelectrode distance of adjacent subpixels, the distance between adjacent described pixel electrode and son pictureThe ratio scope of long limit size of element electrode can comprise 1/12～1/2, as: 1/12,1/8,1/6,1/3 or1/2 etc.
In an object lesson, when the minor face of each pixel electrode is 20 μ m, long limit while being 60 μ m,And the interelectrode distance of adjacent subpixels is 1/12 o'clock with the ratio of the long limit size of pixel electrode, son pictureThe interelectrode spacing of element is 5 μ m.
In another object lesson, when the minor face of each pixel electrode is that 40 μ m, long limit are 120 μ m,And the interelectrode distance of adjacent subpixels is 1/4 o'clock with the ratio of the long limit size of pixel electrode, sub-pixelInterelectrode spacing is 30 μ m.
It should be noted that, in other embodiments of the invention, described pixel electrode can also be itHis shape is or/and the interelectrode column distance of adjacent subpixels also can be not equal to the interelectrode row of adjacent subpixelsDistance, it does not limit the scope of the invention.
Shown in Fig. 7, described switch element 107 can be thin film transistor (TFT) (ThinFilmTransistor, TFT), comprising: grid 201, is electrically connected on scan line 120, for according to scan line120 carry out conducting or turn-off operation; Source electrode 202, is electrically connected on data wire 140, receives data-signal;Drain electrode 203, is electrically connected on pixel electrode 108 by via hole 204.
Common dot structure is all the edge that switch element is arranged at sub-pixel unit, suchWords are the fringe region that occupies certain pixel electrode for switch element, can make like this pixel electrodeFringe region is asymmetric, and the farmland forming also can be asymmetric. Right in order to form in a pixel electrodeThe farmland claiming distributes, and switch element 107 and described scan line 120 is preferably set described in the present embodimentThe zone line of pixel electrode 108, divides thereby can produce symmetrical farmland in pixel electrode 108Cloth, finally can improve display effect.
The first embodiment has realized the liquid crystal indicator of transmission-type, except switch element 107 and scan line 120Other outer pixel electrodes 108 are all as transmission area. It,, compared with existing MVA method, does not needForm projection, technique is relatively simple, be beneficial to and control cost, and there will not be dark state light leak and cause rightThe phenomenon declining than degree; Compared with existing PVA method, need not do photoetching to the ito glass of color film sideProcess, also reduced production cost and process complexity.
In the second embodiment of the present invention, due to the switch element in the first embodiment and scan line placePixel electrode can not transmitted light, therefore the second embodiment is on the basis of the first embodiment, all rightThe rectangular region that switch element and scan line are corresponding is set to echo area, thereby makes liquid crystal display dressPut and both can be operated in transmission mode, also can be operated in reflective-mode, be i.e. liquid crystal indicator nowFor transflective liquid crystal display device. In the time that surround lighting is dark, can open the backlight of liquid crystal indicator,Make it be operated in transmission mode; In the time of environment bright, can close backlight, make it be operated in reflection mouldFormula, had so both saved power consumption, can in the situation that extraneous light is stronger, normally work again.
Shown in figure 8 and Fig. 9, Fig. 8 is the pixel electrode of liquid crystal indicator in the second embodimentStructural representation, Fig. 9 is the cross-sectional view along AA direction obtains in Fig. 8. The present embodimentCan be corresponding with switch element and scan line with respect to the inner side of described first substrate at second substrate 102Rectangular region is on echo area 200, to set gradually reflection protrusion 211 and reflective metal layer 212, described anti-Penetrate projection 211 and can realize the diffuse reflection of light, thereby realize the wide viewing angle of liquid crystal indicator; Described anti-Penetrate metal level 212 and be positioned in described reflection protrusion 211, thereby realize reflection of light. Described reflective metalsLayer 212 can be any one reflective metal material, and it is same as the prior art, does not repeat them here.Preferably, the liquid crystal cell of echo area can be set thick is that the Double liquid crystal box of the half that transmission area liquid crystal cell is thick is thickStructure.
Single liquid crystal box is thick to be referred in transflective liquid crystal display device, the box of transmission area and echo area thick (twoThe thickness of the layer of liquid crystal molecule between individual substrate) identical, but usually, transmission area and echo area need listOnly TFT controls; Double liquid crystal box is thick to be referred in transflective liquid crystal display device, transmission area and echo areaBox is thick not identical, and the box of general transmission area is thick is thick 2 times of the box of echo area, now only needs a TFTControl and also can obtain identical optical path difference.
Particularly, in the manufacturing process of liquid crystal indicator, can on whole pixel electrode, formOne deck organic film, utilizes organic film to form Double liquid crystal box thick structure, then by described switch element and scanningOrganic film in rectangular region corresponding to line is processed into the shape of reflection protrusion, then in reflection protrusionForm reflective metal layer.
It should be noted that, the reflection protrusion in the present embodiment and the structure of dual-box thick can also adoptOther materials outside machine film forms, and does not affect protection scope of the present invention.
In addition, in order to improve the reflectivity of liquid crystal indicator, can be under the prerequisite that meets transmission, rightThe area of echo area does suitable increase, thereby makes echo area and transmission area reach optimum Match, as: anti-Penetrate the zone line that district is positioned at pixel electrode, and the area of echo area can account for pixel electrode area1/3rd, now the transmission area of both sides is symmetry equivalent, and echo area is 1/2nd of transmission area.
In the third embodiment of the present invention, at the fringe region of adjacent pixel electrode, pre-dumping is set protrudingRise, and described pre-dumping is raised with two inclined-planes, described two inclined-planes are separately towards described two sub-pixel electricityThe central area of the utmost point, described in the meeting in not powering up of the liquid crystal molecule on the inclined-plane of close pre-dumping projection is verticalInclined-plane is arranged, and so just makes the liquid crystal molecule of pixel electrode fringe region perpendicular to inclined-plane sensingThe effect that arrange the central area of pixel electrode, is similar to Rib of the prior art, plays the effect of pre-dumping;After liquid crystal molecule is powered up, due to the secondary action of oblique electric field, thereby can drive better liquid crystalMolecule forms the effect of multidomain.
Shown in Figure 10, Figure 11, Figure 10 is liquid crystal indicator subpixel area in the 3rd embodimentStructural representation, Figure 11 is the structural representation along the section of CC direction in Figure 10. Pixel electrode1081,1082 and 1083 is three pixel electrodes adjacent in CC direction, each pixel electrodeComprise transmission area and echo area, and the transmission area of described three pixel electrodes is adjacent, adjacent sub-pictureBetween element electrode 1081 and pixel electrode 1082, pre-dumping projection 2221 is set, adjacent pixel electrode1082 and pixel electrode 1083 between pre-dumping projection 2222 is set. Described pre-dumping projection 2221 and 2222Part and pixel electrode are overlapping, and each pre-dumping projection has two inclined-planes, pre-dumping projection 2221Two inclined-planes are respectively towards pixel electrode 1081 and pixel electrode 1082, two of pre-dumping projection 2222Individual inclined-plane is respectively towards pixel electrode 1082 and pixel electrode 1083. Particularly, described inclined-plane and waterAngular range between plane can comprise 30 degree～70 degree, as: 30 degree, 40 degree, 50 degree, 60 degreeOr 70 degree etc. In addition the side of reflection protrusion 211 in the echo area 200 of described pixel electrode 1082,Face can be also inclined-plane. In the time that liquid crystal indicator does not power up, near the liquid crystal molecule of pre-dumping high spot beArranging in the inclined-plane of vertical pre-dumping projection, tilts to the central area of pixel electrode, plays liquid crystalThe effect of molecule pre-dumping; In the time that liquid crystal indicator powers up, due to the secondary action of oblique electric field, therebyCan drive better liquid crystal molecule to form the effect of multidomain.
Preferably, described reflection protrusion and pre-dumping projection are all same material and are at same processing stepMiddle formation, in the present embodiment, described reflection protrusion and pre-dumping projection are all organic film materials.
Please refer to Figure 12, is another embodiment of liquid crystal indicator of the present invention, in the present embodiment,Pre-dumping projection 2223 and 2224 can also be arranged on left and right adjacent (being the long side direction of pixel electrode)The edge of two pixel electrodes, and part have overlappingly with pixel electrode, described pre-dumping is simultaneously protrudingPlaying 2223 and 2224 respectively has two inclined-planes and separately towards the central area of adjacent pixel electrode, risesTo the effect to liquid crystal molecule pre-dumping. Please then refer to Figure 13, is another reality of liquid crystal indicator of the present inventionExecute routine schematic diagram, in the present embodiment, the concave shape of pre-dumping projection 2225 and 2226 for being oppositely arranged,Lay respectively at the edge of adjacent up and down pixel electrode, and have with each pixel electrode partOverlapping, and described pre-dumping projection 2225 and 2226 respectively has two inclined-planes, be respectively interior inclined-plane and outer tiltedlyFace, described two inclined-planes are separately towards the central area of adjacent pixel electrode. Described pre-dumping projection alsoCan be set to the rectangle of ring-type or hollow etc., be arranged at the fringe region part of adjacent subpixels electrode,And inclined-plane is towards the central area of adjacent pixel electrode, and the projection of pre-dumping described in the present invention is all rightFor other shapes, as long as play the pre-dumping effect of the liquid crystal molecule to pixel electrode edge.
Although the present invention discloses as above with preferred embodiment, the present invention is not defined in this. AnyThose skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications,Therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (11)
1. a liquid crystal indicator, is characterized in that, comprising:
The first substrate being oppositely arranged and second substrate, and be arranged at described first substrate and described secondLayer of liquid crystal molecule between substrate;
Described first substrate comprises: be arranged at the first common electrode with respect to the inner side of second substrate;
Described second substrate comprises: be arranged at respect to many mutually insulateds of the inner side of first substrate and intersectScan line and data wire, described multi-strip scanning line and data wire limit multiple subpixel area; Described sonPixel region comprises switch element and pixel electrode; Described switch element and described scan line, data wireAnd pixel electrode electrical connection;
In the time of the first common electrode and pixel electrode acquisition driving signal, the first common electrode and sub-pixelBetween electrode, form the oblique electric field that drives liquid crystal molecule pre-dumping;
Described pixel electrode is rectangle, and the size range on its long limit comprises: 60 μ m～150 μ m;
The scope bag of the distance between adjacent described pixel electrode and the ratio of the long limit size of pixel electrodeDraw together: 1/12～1/2.
2. liquid crystal indicator as claimed in claim 1, is characterized in that, the liquid crystal of described layer of liquid crystal moleculeMolecule is negative liquid crystal.
3. liquid crystal indicator as claimed in claim 1, is characterized in that, described switch element is film crystalline substanceBody pipe, comprising: grid, is electrically connected on scan line, for carrying out conducting according to scan line or turn-offing operation;Source electrode, is electrically connected on data wire, for receiving data-signal; Drain electrode, is electrically connected on pixel electrode.
4. liquid crystal indicator as claimed in claim 1, is characterized in that, described switch element and described in sweepRetouch the zone line that line is arranged on described pixel electrode.
5. liquid crystal indicator as claimed in claim 4, is characterized in that, described switch element and described in sweepRetouch the rectangular area that line is corresponding and be set to echo area, described echo area is provided with reflective metal layer.
6. liquid crystal indicator as claimed in claim 5, is characterized in that, below described reflective metal layerBe provided with reflection protrusion, for realizing diffuse reflection.
7. liquid crystal indicator as claimed in claim 6, is characterized in that, the liquid crystal cell of described echo area is thickFor the thick half of transmission area liquid crystal cell.
8. liquid crystal indicator as claimed in claim 6, is characterized in that, adjacent described pixel electrodeEdge is provided with pre-dumping projection; The material of described reflection protrusion and described pre-dumping projection is all organic film, andAnd form in same step.
9. liquid crystal indicator as claimed in claim 1, is characterized in that, adjacent described pixel electrodeEdge is provided with pre-dumping projection.
10. the liquid crystal indicator as described in as arbitrary in claim 8 or 9, is characterized in that described pre-dumping projectionHave inclined-plane, described inclined-plane is towards the central area of adjacent pixel electrode.
11. liquid crystal indicators as claimed in claim 10, is characterized in that, described inclined-plane and horizontal plane itBetween angular range comprise 30 degree～70 degree.
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| CN1758095A (en) * | 2004-02-02 | 2006-04-12 | 夏普株式会社 | Liquid crystal display device |
| CN101238408A (en) * | 2005-08-03 | 2008-08-06 | 夏普株式会社 | Liquid crystal display device and electronic device using the same |
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| CN1216830A (en) * | 1997-10-30 | 1999-05-19 | 国际商业机器公司 | Liquid crystal cell employing thin wall for pre-tilt control |
| CN1758095A (en) * | 2004-02-02 | 2006-04-12 | 夏普株式会社 | Liquid crystal display device |
| CN101238408A (en) * | 2005-08-03 | 2008-08-06 | 夏普株式会社 | Liquid crystal display device and electronic device using the same |
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