CN103257480A - Alignment method for liquid crystal VA model - Google Patents
Alignment method for liquid crystal VA model Download PDFInfo
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Abstract
The invention provides an alignment method for a liquid crystal VA model. The alignment method comprises the following steps that firstly, a light leakage gap of a UV2A light mask on a TFT side covers a left half part of each sub-pixel unit, a shading strip covers the right half part of each sub-pixel unit, and the alignment direction of the left half parts of the transverse sub-pixel units and the direction of the right half parts of the transverse sub-pixel units are opposite; secondly, a light leakage gap of a UV2A light mask on a CF side covers one integral sub-pixel unit, the light leakage gap of the UV2A light mask on the CF side covers another adjacent integral sub-pixel unit at the lower side, and the alignment directions of the two longitudinally-adjacent sub-pixel units with the same color are opposite. Due to the facts that four areas or eight areas of one sub-pixel in UV2A are parted, and alignment is achieved in two adjacent or four adjacent sub-pixel units jointly, black areas among the four areas of the UV2A are reduced, and an aperture ratio is improved.
Description
Technical field
The present invention relates to a kind of alignment method of liquid crystal VA pattern.
Background technology
UV
2A(Ultra Violet Vertical Alignment) technology is a kind of VA(Vertical Alignment that adopts ultraviolet ray (UV=Ultra Violet) to carry out LCD alignment, vertical orientation) panel technology, its title derive from multiplying each other of ultraviolet (UV) and liquid crystal panel VA pattern.By importing UV
2After the A technology, can save the slit crack and the projection that in VA mode liquid crystal panel, are used for the control liquid crystal alignment at present, therefore pass through UV
2Aperture opening ratio, contrast and the response speed of A technology liquid crystal panel can both be improved, and can significantly cut down production routine.
UV
2The key of A technology is that exploitation is as the macromolecular material of alignment film, the high polymer main chain on alignment film surface tilts to ultraviolet ray (UV) direction of illumination, liquid crystal molecule will tilt along this main chain direction, and by controlling the angle of orientation, the orientation precision of liquid crystal molecule is the angle with respect to liquid crystal molecule length (about 2nm) one-tenth ± 20pm.
At UV
2Before the A technology, the control alignment direction is carried out orientation at polymeric membrane by rubbing manipulation (Rubbing), rubbing manipulation can only orientation on a horizontal direction, by TN(Twisted Nematic), IPS(In-Plane Switching) etc. liquid crystal panel extensively adopt, but the VA pattern of TV liquid crystal panel will enlarge the visual angle, need partly change alignment direction, be divided into a plurality of zones, therefore can not adopt rubbing manipulation.The VA pattern makes liquid crystal molecule be basically perpendicular to the panel face under the state that is not written into electric field to carry out orientation; When being written into electric field, lqiuid crystal molecule tipping, state changes.The toppling direction of liquid crystal molecule when being written into electric field for control, state and the stable status that liquid crystal molecule tilts a little realized by the shape that changes them in present liquid crystal panel design projection and slit crack.When being written into electric field, near the liquid crystal molecule projection and the slit crack at first begins to topple over, and then according to domino effect, pushes over other liquid crystal molecules with work, and all liquid crystal molecules are all toppled over to a direction.
UV
2The A technology can realize the state that all liquid crystal molecules tilt to design direction by alignment film, so when being written into electric field, liquid crystal molecule is toppled over to same direction simultaneously, therefore, response speed increases to original 2 times, reaches below the 4ms.Owing to do not use projection and slit crack also can be divided into a plurality of zones, so aperture opening ratio improves more than 20% than the panel that utilizes projection to be divided into a plurality of zones originally.Brightness of backlight is very little can be obtained and original equal brightness, reduces power consumption and cut down the backlight quantity of light source to be conducive to energy-conservation and to save cost, and height becomes more meticulous and 3D display etc. also is easy to realize.In addition, the light of past backlight is in projection and the part scattering of slit crack, and light leak is therefore blacking up in front; And UV
2The A technology can light leak in projection and slit crack part, and therefore static contrast reaches 5000:1, is original 1.6 times.Can also save the technology in design projection and slit crack, improve productive capacity.
Fig. 1 is existing UV
2A orientation mode synoptic diagram, liquid crystal display substrate comprises TFT side group plate 2, CF side group plate 1, and be located in liquid crystal 3 between TFT side group plate 2 and the CF side group plate 1, TFT side group plate comprises crisscross sweep trace 10 and data line 20, intersect the some sub-pixel unit that limit by sweep trace 10 and data line 20, each pixel cell comprises some not homochromy sub-pixel unit, each sub-pixel unit is equipped with a thin film transistor (TFT) 30 and pixel electrode 40, in pixel cell, form multizone in the prior art, obtain big angle of visibility with this, shown in Figure 1 have only under the situation of left-half orientation vergence direction among the figure at liquid crystal, can form as shown in Figure 1 when angle of visibility from left to right changes successively, GTG by the variation that secretly brightens.Have only under the situation of right half part orientation vergence direction among Fig. 1 at liquid crystal, can form as shown in Figure 1 when angle of visibility from left to right changes successively the variation by bright deepening of GTG.But forming under the situation of multizone, under the situation that forms two kinds of orientation vergence directions coexistences among the figure, then two kinds of effects add mutually and, form GTG effect relatively uniformly.
Though UV
2A we can say as state-of-the-art VA technology and has been tending towards perfect, but the place that also exists some to improve.At present under the ultraviolet light vertical alignment mode, general mode is to form 8 zone or 4 zones in a pixel cell, Figure 2 shows that the structural representation that forms 8 zones under the ultraviolet light vertical alignment mode, Figure 3 shows that the structural representation that forms 4 zones under the ultraviolet light vertical alignment mode.
Be illustrated in figure 2 as the structural representation that forms 8 zones, liquid crystal display substrate comprises crisscross sweep trace 10 and data line 20, intersects the some sub-pixel unit that limit by sweep trace 10 and data line 20, and each sub-pixel unit comprises by two thin film transistor (TFT)s 30 up and down of same sweep trace 10 connections and first pixel electrode 41 and second pixel electrode 42 that lays respectively at these sweep trace 10 both sides.
Lateral separation (spacing between the adjacent data line) in a sub-pixel unit of liquid crystal display substrate illustrated in Figure 1 is TFT side UV
2The cycle of A light shield repetitive, TFT side UV
2The light leak slit of A light shield covers the left-half (direction that B indicates among Fig. 2) of this sub-pixel unit, and shading strip covers the right half part (direction that A indicates among Fig. 2) of sub-pixel; Fore-and-aft distance with this sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the first half of first pixel electrode 41 and the first half of second pixel electrode 42 (direction that D and D' indicate among Fig. 2), CF side UV
2The light leak slit of A light shield covers the latter half of first pixel electrode 41 and the latter half of second pixel electrode 42 (direction that C and C' indicate among Fig. 2).
By above-mentioned UV
2The mode of A light shield orientation forms four black lines, and these four black lines lay respectively at first pixel electrode, 41 interior orthogonal black line E, F and are positioned at second pixel electrode, 42 orthogonal black line G, H.
Design shown in Figure 2 makes that the liquid crystal panel compensation is abundant more, angle of visibility is bigger, display quality is more outstanding, but corresponding shortcoming is so also arranged: because the zone is more, the black line number of formation is more many, and the corresponding meeting of transmitance reduces; And 8 zones also are accompanied by the design of double T FT, a pixel need be divided into two parts, and the pressure of pixel charging reduces like this, can fully charge, and display frame is more outstanding, but can form the waste of open area, and transmitance reduces.
Be illustrated in figure 3 as the structural representation that forms 4 zones, each sub-pixel unit of liquid crystal display substrate has only a thin film transistor (TFT) 30 and pixel electrode 40, and its ultraviolet light vertical alignment mode is: TFT side UV
2The light leak slit of A light shield covers the left-half (direction that B indicates among Fig. 3) of this sub-pixel unit, and shading strip covers the right half part (direction that A indicates among Fig. 3) of sub-pixel; Fore-and-aft distance with this sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the first half (direction that D indicates among Fig. 3) of pixel electrode 40, and the shading strip of CF side UV2A light shield covers the latter half (direction that C indicates among Fig. 3) of pixel electrode 40.By the mode of above-mentioned light shield, form two black lines, these two black lines lay respectively at orthogonal black line E, F in the pixel electrode 40, owing to have black line, so influence aperture opening ratio.
More than the structure of two kinds of liquid crystal display substrates, though can improve VA pattern angle of visibility, have the more black line that can not normally show between the zone in single sub-pixel unit and the zone.
What of the formation of black line and the zone of orientation are closely related.In same zone, the initial orientation angle of liquid crystal molecule all is the same, behind making alive, just can topple over towards the direction of initial orientation angle.But initial orientation angle difference in the different zones.Because there is Domino effect in liquid crystal, a liquid crystal is toppled over to a certain direction, and near the liquid crystal will pulling is toppled over to identical direction.Liquid crystal between two zones is subjected to the pulling of the liquid crystal of toppling over to both direction on both sides, just has a kind of imbalance, and liquid crystal enters a kind of disturbance state between two zones, forms black line.Black line brightness when panel is shown as white is not enough, and light leak when panel is shown as black so can form bonding jumper in the general array design process, blocks this part black line, makes it light tight fully.But so just sacrificed the part transmitance, particularly under the less situation of pixel, the counter plate transmitance produces bigger influence.Therefore promote VA panel transmitance, reduce the black line amount and become an important topic.
Summary of the invention
The present invention discloses and a kind ofly forms 4 zones in adjacent two or four sub-pixel unit, makes that the viewing area in the single sub-pixel unit is reduced, improves the alignment method of the liquid crystal VA pattern of pixel aperture ratio and transmitance.
The invention provides a kind of alignment method of liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along the unit orientation of different sub-pixels, the direction of vertical this horizontal direction is longitudinal direction, and its alignment method comprises the steps: the first step: the lateral separation with a sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the left side of this sub-pixel unit, TFT side UV
2The shading strip of A light shield covers the right-hand part of this sub-pixel unit, and the left-half of this horizontal sub-pixel unit is opposite with the alignment direction of right half part; Second step: the fore-and-aft distance with two adjacent homochromy sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers this one of them whole sub-pixel unit, CF side UV
2The shading strip of A light shield covers another whole sub-pixel unit of sides adjacent, and vertically the alignment direction of two adjacent homochromy sub-pixel unit is opposite.Or the first step: the lateral separation with two adjacent pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a whole pixel cell that comprises several sub-pixel unit, TFT side UV
2The shading strip of A light shield covers another whole pixel cell that sides adjacent comprises several sub-pixels, and the alignment direction of these two adjacent pixel cells is opposite; Second step: the fore-and-aft distance with a sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the first half of this sub-pixel unit, CF side UV
2The shading strip of A light shield covers the Lower Half of this sub-pixel unit, and the alignment direction of the first half of this sub-pixel unit and the latter half is opposite.Or the first step: the lateral separation with two adjacent pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a wherein whole pixel cell that comprises several sub-pixel unit, TFT side UV
2The shading strip of A light shield covers another whole pixel cell that adjacent right side comprises several sub-pixel unit, and the alignment direction of these adjacent two pixel cells is opposite; Second step: the fore-and-aft distance with two adjacent pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers wherein all sub-pixel unit of a pixel cell of upside, CF side UV
2The shading strip of A light shield covers all sub-pixel unit of adjacent another pixel cell of downside, and the alignment direction of these adjacent two pixel cells is opposite.Or the first step: the lateral separation with a sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the left side of this sub-pixel unit, CF side UV
2The shading strip of A light shield covers the right-hand part of sub-pixel unit, and the left-half of this horizontal sub-pixel unit is opposite with the alignment direction of right half part; Second step: the fore-and-aft distance with two adjacent homochromy sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers one of them whole sub-pixel unit, TFT side UV
2The shading strip of A light shield covers another whole sub-pixel unit of sides adjacent, and vertically the alignment direction of two pixel electrodes of two adjacent homochromy sub-pixel unit is opposite.Or the first step: the lateral separation with two pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the whole pixel cell that comprises several sub-pixel unit, CF side UV
2The shading strip of A light shield covers the whole pixel cell that sides adjacent comprises several sub-pixel unit, and the alignment direction of these two adjacent pixel cells is opposite; Second step: the fore-and-aft distance with a sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the first half of this sub-pixel unit, TFT side UV
2The shading strip of A light shield covers the Lower Half of sub-pixel unit, and the alignment direction of the first half of this sub-pixel unit and the latter half is opposite.Or the first step: the lateral separation with adjacent two pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers a wherein whole pixel cell that comprises several sub-pixel unit, CF side UV
2The shading strip of A light shield covers another whole pixel cell that sides adjacent comprises several sub-pixel unit, and the alignment direction of these adjacent two pixel cells is opposite; Second step: the fore-and-aft distance with adjacent two pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers wherein all sub-pixel unit of a pixel cell of upside, TFT side UV
2The shading strip of A light shield covers all sub-pixel unit of adjacent another pixel cell of downside, and the alignment direction of two sub-pixel unit that this is adjacent is opposite.
The present invention passes through UV
24 zones among the A in sub-pixel unit or 8 zones separately realize in adjacent two or four sub-pixel unit jointly, with this with UV
2Black region among the A between four zones reduces, and improves aperture opening ratio.
Description of drawings
Fig. 1 is existing UV
2A orientation mode: the synoptic diagram that compensates mutually in the same pixel;
Fig. 2 is the UV of available liquid crystal display base plate
2The A alignment mode forms the structural representation in 8 zones;
Fig. 3 is the UV of available liquid crystal display base plate
2The A alignment mode forms the structural representation in 4 zones;
Fig. 4 is the UV of liquid crystal display substrate of the present invention
2The structural representation of A alignment mode;
The UV that Fig. 5 proposes for this patent
2A orientation mode: neighbor is the synoptic diagram of compensation mutually;
Fig. 6 is UV of the present invention
2The synoptic diagram of second embodiment of A orientation mode;
Fig. 7 is UV of the present invention
2The synoptic diagram of the 3rd embodiment of A orientation mode;
The effect synoptic diagram that the orientation mode that Fig. 8 adopts for Fig. 7 produces.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Fig. 4 is the UV of liquid crystal display substrate of the present invention
2The structural representation of first embodiment of A orientation mode, Figure 4 shows that the structural representation of liquid crystal display substrate, consult Fig. 5 simultaneously, liquid crystal display substrate comprises TFT side group plate 2, CF side group plate 1, and be located in liquid crystal 3 between TFT side group plate 2 and the CF side group plate 1, TFT side group plate comprises crisscross sweep trace 10 and data line 20, intersect the some sub-pixel unit that limit by sweep trace 10 and data line 20, each pixel cell comprises some not homochromy sub-pixel unit, in the present embodiment, each pixel cell comprises three sub-pixel unit: be respectively the R sub-pixel unit, G sub-pixel unit and B sub-pixel unit, each sub-pixel unit is equipped with a thin film transistor (TFT) 30 and pixel electrode 40, CF side group plate comprises the some pixel cells relative with TFF side group plate, Figure 4 shows that two continuous sub-pixel unit, define two continuous homochromy pixel electrodes and be respectively first pixel electrode 41 and second pixel electrode 42.
In the present invention, definition is that laterally the direction of vertical transverse direction is longitudinal direction along three not homochromy sub-pixel unit orientations of RGB.
Supposing to Figure 4 shows that two continuous R sub-pixel unit (can certainly be two continuous G sub-pixel unit or two continuous B sub-pixel unit), is TFT side UV with the distance of a horizontal sub-pixel unit
2The cycle of A light shield and vertically the distance of two adjacent homochromy sub-pixel unit be CF side UV
2In the cycle of A light shield, the orientation step of liquid crystal display substrate shown in Figure 4 is as follows:
The first step: the lateral separation with a sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the left side (direction that B indicates among Fig. 4) of this sub-pixel unit, TFT side UV
2The shading strip of A light shield covers the right-hand part (direction that A indicates among Fig. 4) of this sub-pixel unit, and wherein, the B direction is opposite with the A direction, that is: the left-half of this horizontal sub-pixel unit is opposite with the alignment direction of right half part.
Second step: the fore-and-aft distance with two adjacent homochromy sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers this wherein whole sub-pixel unit (direction that C indicates among Fig. 4), CF side UV
2The shading strip of A light shield covers adjacent another whole sub-pixel unit of downside (direction that D indicates among Fig. 4), and wherein, the C direction is opposite with the D direction, that is: the alignment direction of these vertical adjacent two homochromy sub-pixel unit is opposite.
By the orientation mode of Fig. 4, forming 4 zones in two homochromy sub-pixel unit up and down, black line is for having only black line longitudinally; And in Fig. 5, in two homochromy sub-pixel unit, form 4 zones, namely forming four initial alignment direction of liquid crystal in two adjacent subpixels unit up and down.
The orientation mode shown in Figure 3 of prior art forms 4 regional compensations in same sub-pixel unit, namely form four initial alignment direction of liquid crystal, has formed two black lines as shown in Figure 4 so between different zones.Orientation mode shown in Figure 4 and prior art orientation mode shown in Figure 3 is compared, and only forms 1 black line in a sub-pixel.Compare with orientation mode shown in Figure 3, reduced by 1 black line, improved transmitance.
UV by above-mentioned Fig. 4
2A orientation mode is utilized the mode of gray scale compensation between the adjacent subpixels unit, forms multizone, will have UV now
2Black line quantity reduces in the pixel region that produces in the A alignment technique, even the black line disappearance, improves aperture opening ratio, and is energy-saving and cost-reducing.
The present invention forms compensation mutually by the gray scale compensation mode in the different pixels unit, have difference owing to show the GTG of image in the different pixels unit, may not reach to form the so good display effect of gray scale compensation in the same pixel cell; If but pixel very little (reaching more than the 300PPI), because pixel is very intensive, the GTG missionary society between pixel is difficult to be realized by human eye that the problem that the gray scale compensation mode in the different pixels that the present invention proposes is brought just can be avoided fully; And simultaneously because UV
2The black line width of A can not change along with the variation of pixel size in process of production, almost is a definite value, and black line zone area occupied is more bigger than regular meeting under the more little situation of pixel so, and the lifting of the transmitance that the elimination black region brings is also more remarkable.
Understanding to technical solution of the present invention is: if the GTG of adjacent two homochromy sub-pixel unit that compensate mutually is identical, the compensation of these two adjacent subpixels unit just is equivalent in the prior art of 1/2 resolution situation that a sub-pixel unit forms multizone (as shown in Figure 3 and Figure 4 so, if the GTG of sub-pixel unit shown in Figure 3 is 125, two sub-pixel unit up and down shown in Figure 4 are 125 GTGs, and their the gray scale compensation effect under the angle of squint is identical so); If the GTG difference of adjacent two homochromy sub-pixel unit that compensate mutually, under the situation of angle of squint, will form drift (4 zones as shown in Figure 4 of gray scale compensation so, a last sub-pixel unit GTG is 125, the GTG of next son pixel cell is 160, and the gray scale compensation between the pixel of the gray scale compensation between them and normal two 125 GTGs has drift so).But under the high resolving power situation, owing to the adjacent subpixels unit bigger situation of ash jump can significantly reduce, so the situation of GTG drift can visually be accepted.
To the understanding of technical solution of the present invention can also for: can be with UV
2Number of regions in each sub-pixel unit of A panel reduces, and reduces the black line number, and intrinsic black line then is formed on it on some function metal wires, improves aperture opening ratio with this.
Fig. 5 is UV of the present invention
2A orientation mode synoptic diagram, as shown in Figure 5, what left-half of the present invention was different with Fig. 1 with right half part is that they are not in same pixel, and are formed in two adjacent homochromy sub-pixel unit.
Fig. 6 is UV of the present invention
2The synoptic diagram of second embodiment of A orientation mode is TFT side UV with the lateral separation of two pixel cells
2The cycle of A light shield is CF side UV with the fore-and-aft distance of a sub-pixel unit
2In the cycle of A light shield, Fig. 6 has only illustrated R sub-pixel unit and the adjacent R sub-pixel unit of three sub-pixel unit of RGB, and Fig. 6 has omitted G sub-pixel unit and the B sub-pixel unit of rgb pixel unit, and its orientation step is as follows:
The first step: the lateral separation with two pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a wherein whole pixel cell (direction that B shown in Figure 6 indicates) that comprises three sub-pixel unit of RGB, TFT side UV
2The shading strip of A light shield covers another whole pixel cell (mode that A shown in Figure 6 indicates) that adjacent right side comprises three sub-pixels of RGB, and wherein the B direction is opposite with the A direction, that is: the alignment direction of these two adjacent pixel cells is opposite.
Second step: the fore-and-aft distance with a sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the first half (mode that D shown in Figure 6 indicates) of this sub-pixel unit, CF side UV
2The shading strip of A light shield covers the Lower Half (mode that C shown in Figure 6 indicates) of this sub-pixel unit, and wherein the D direction is opposite with the C direction, that is: and the alignment direction of the first half of this sub-pixel unit and the latter half opposite.
By orientation mode shown in Figure 6, between horizontal two adjacent homochromy sub-pixel unit (with the R sub-pixel unit for example), form 4 zones, black line has only the middle horizontal black line of sub-pixel unit.
Fig. 7 and Fig. 8 are UV of the present invention
2The synoptic diagram of the 3rd embodiment of A orientation mode as shown in Figure 7, is TFT side UV with the lateral separation of two pixel cells
2The A light shield cycle is CF side UV with the fore-and-aft distance of two adjacent pixel cells
2In the cycle of A light shield, the step of its light orientation is as follows:
The first step: the lateral separation with two adjacent pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a wherein whole pixel cell (mode that B shown in Figure 7 indicates) that comprises three sub-pixel unit of RGB, TFT side UV
2The shading strip of A light shield covers another whole pixel cell (mode that A shown in Figure 7 indicates) that adjacent right side comprises three sub-pixel unit of RGB, and wherein, the B direction is opposite with the A direction, that is: the alignment direction of these adjacent two pixel cells is opposite.
Second step: the fore-and-aft distance with two adjacent pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the whole sub-pixel unit of upside (mode that D shown in Figure 7 indicates), CF side UV
2The shading strip of A light shield covers the adjacent whole sub-pixel unit of downside (mode that C shown in Figure 7 indicates), and wherein, the D direction is opposite with the C direction, that is: the alignment direction of these adjacent two pixel cells is opposite.
By above-mentioned alignment method, as shown in Figure 8, each two adjacent same color pixels of vertical and horizontal (with the R sub-pixel unit for example) form 4 regional compensations altogether, with this black line in pixel are eliminated fully, and it is maximum that transmitance reaches.
In three enforcements of above-mentioned Fig. 4 to Fig. 8, all be with liquid crystal display substrate TFT side UV
2Light leak slit and the shading strip of A light shield are transversely arranged, CF side UV
2Light leak slit and the shading strip of A light shield are arranged along the longitudinal.
If TFT side UV
2Light leak slit and the shading strip of A light shield are arranged along the longitudinal, CF side UV
2Light leak slit and the shading strip of A light shield are transversely arranged, and the orientation mode of above-mentioned three embodiment will have following difference.
Orientation mode shown in Figure 4 becomes following mode:
The first step: the lateral separation with a sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the left side of this sub-pixel unit, CF side UV
2The shading strip of A light shield covers the right-hand part of sub-pixel unit, and the left-half of this horizontal sub-pixel unit is opposite with the alignment direction of right half part.
Second step: the fore-and-aft distance with two adjacent homochromy sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a wherein whole sub-pixel unit, TFT side UV
2The shading strip of A light shield covers adjacent another whole sub-pixel unit of downside, that is: this vertically the alignment direction of two pixel electrodes of two adjacent homochromy sub-pixel unit is opposite.
Orientation mode shown in Figure 6 becomes following mode:
The first step: the lateral separation with two pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers a wherein whole pixel cell that comprises three sub-pixel unit of RGB, CF side UV
2The shading strip of A light shield covers another whole pixel cell that adjacent right side comprises three sub-pixel unit of RGB, and the alignment direction of these two adjacent pixel cells is opposite.
Second step: the fore-and-aft distance with a sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the first half of this sub-pixel unit, TFT side UV
2The shading strip of A light shield covers the Lower Half of sub-pixel unit, and the alignment direction of the first half of this sub-pixel unit and the latter half is opposite.
Fig. 7 and orientation mode shown in Figure 8 become following mode:
The first step: the distance with horizontal adjacent two pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers a wherein whole pixel cell that comprises three sub-pixel unit of RGB, CF side UV
2The shading strip of A light shield covers another whole pixel cell that adjacent right side comprises three sub-pixel unit of RGB, and the alignment direction of these adjacent two pixel cells is opposite.
Second step: the fore-and-aft distance with adjacent two pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the whole sub-pixel unit of upside, TFT side UV
2The shading strip of A light shield covers the adjacent whole sub-pixel unit of downside, and the alignment direction of two sub-pixel unit that this is adjacent is opposite.
By 6 kinds of above-mentioned orientation modes, in adjacent two or four sub-pixel unit, form 4 zones, so that the area decreases in the single pixel cell improves aperture ratio of pixels and transmitance.
Claims (10)
1. the alignment method of a liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along the unit orientation of different sub-pixels, the direction of vertical this horizontal direction is longitudinal direction, it is characterized in that its alignment method comprises the steps:
The first step: the lateral separation with a sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the left side of this sub-pixel unit, TFT side UV
2The shading strip of A light shield covers the right-hand part of this sub-pixel unit, and the left-half of this horizontal sub-pixel unit is opposite with the alignment direction of right half part;
Second step: the fore-and-aft distance with two adjacent homochromy sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers this one of them whole sub-pixel unit, CF side UV
2The shading strip of A light shield covers another whole sub-pixel unit of sides adjacent, and vertically the alignment direction of two adjacent homochromy sub-pixel unit is opposite.
2. the alignment method of a liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along different sub-pixels orientations, the direction of vertical this horizontal direction is longitudinal direction, it is characterized in that its alignment method comprises the steps:
The first step: the lateral separation with two adjacent pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a whole pixel cell that comprises several sub-pixel unit, TFT side UV
2The shading strip of A light shield covers another whole pixel cell that sides adjacent comprises several sub-pixels, and the alignment direction of these two adjacent pixel cells is opposite;
Second step: the fore-and-aft distance with a sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the first half of this sub-pixel unit, CF side UV
2The shading strip of A light shield covers the Lower Half of this sub-pixel unit, and the alignment direction of the first half of this sub-pixel unit and the latter half is opposite.
3. the alignment method of a liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along the unit orientation of different sub-pixels, the direction of vertical transverse direction is longitudinal direction, it is characterized in that, its alignment method comprises the steps:
The first step: the lateral separation with two adjacent pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers a wherein whole pixel cell that comprises several sub-pixel unit, TFT side UV
2The shading strip of A light shield covers another whole pixel cell that adjacent right side comprises several sub-pixel unit, and the alignment direction of these adjacent two pixel cells is opposite;
Second step: the fore-and-aft distance with two adjacent pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the whole sub-pixel unit of upside, CF side UV
2The shading strip of A light shield covers the adjacent whole sub-pixel unit of downside, and the alignment direction of these adjacent two pixel cells is opposite.
4. according to the alignment method of the described liquid crystal VA of claim 1-3 pattern, liquid crystal display substrate is at TFT side UV
2Light leak slit and the shading strip of A light shield are transversely arranged, at CF side UV
2Light leak slit and the shading strip of A light shield are arranged along the longitudinal.
5. according to the alignment method of the described liquid crystal VA of claim 1-3 pattern, its orientation result forms 4 zones in adjacent two or four sub-pixel unit.
6. the alignment method of a liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along the unit orientation of different sub-pixels, the direction of vertical transverse direction is longitudinal direction, it is characterized in that, its alignment method comprises the steps:
The first step: the lateral separation with a sub-pixel unit is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the left side of this sub-pixel unit, CF side UV
2The shading strip of A light shield covers the right-hand part of sub-pixel unit, and the left-half of this horizontal sub-pixel unit is opposite with the alignment direction of right half part;
Second step: the fore-and-aft distance with two adjacent homochromy sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers one of them whole sub-pixel unit, TFT side UV
2The shading strip of A light shield covers another whole sub-pixel unit of sides adjacent, and vertically the alignment direction of two pixel electrodes of two adjacent homochromy sub-pixel unit is opposite.
7. the alignment method of a liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along the unit orientation of different sub-pixels, the direction of vertical transverse direction is vertically, it is characterized in that its alignment method comprises the steps:
The first step: the lateral separation with two pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers the whole pixel cell that comprises several sub-pixel unit, CF side UV
2The shading strip of A light shield covers the whole pixel cell that sides adjacent comprises several sub-pixel unit, and the alignment direction of these two adjacent pixel cells is opposite;
Second step: the fore-and-aft distance with a sub-pixel unit is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the first half of this sub-pixel unit, TFT side UV
2The shading strip of A light shield covers the Lower Half of sub-pixel unit, and the alignment direction of the first half of this sub-pixel unit and the latter half is opposite.
8. the alignment method of a liquid crystal VA pattern, liquid crystal display substrate comprise TFT side group plate, CF side group plate and be located in TFT side group plate and CF side group plate between liquid crystal, TFT side group plate includes relative some pixel cells with CF side group plate, each pixel cell includes several not homochromy sub-pixel unit, definition is horizontal along the unit orientation of different sub-pixels, the direction of vertical transverse direction is longitudinal direction, it is characterized in that, its alignment method comprises the steps:
The first step: the lateral separation with adjacent two pixel cells is CF side UV
2The cycle of A light shield, CF side UV
2The light leak slit of A light shield covers a wherein whole pixel cell that comprises several sub-pixel unit, CF side UV
2The shading strip of A light shield covers another whole pixel cell that sides adjacent comprises several sub-pixel unit, and the alignment direction of these adjacent two pixel cells is opposite;
Second step: the fore-and-aft distance with adjacent two pixel cells is TFT side UV
2The cycle of A light shield, TFT side UV
2The light leak slit of A light shield covers the whole sub-pixel unit of upside, TFT side UV
2The shading strip of A light shield covers the adjacent whole sub-pixel unit of downside, and the alignment direction of two sub-pixel unit that this is adjacent is opposite.
9. according to the alignment method of the described liquid crystal VA of claim 5-8 pattern, liquid crystal display substrate is at TFT side UV
2Light leak slit and the shading strip of A light shield are arranged along the longitudinal, at CF side UV
2Light leak slit and the shading strip of A light shield are transversely arranged.
10. according to the alignment method of the described liquid crystal VA of claim 5-8 pattern, its orientation result forms 4 zones in adjacent two or four sub-pixel unit.
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