CN101285967A - Lcd device and its manufacture method - Google Patents
Lcd device and its manufacture method Download PDFInfo
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- CN101285967A CN101285967A CNA2007100961009A CN200710096100A CN101285967A CN 101285967 A CN101285967 A CN 101285967A CN A2007100961009 A CNA2007100961009 A CN A2007100961009A CN 200710096100 A CN200710096100 A CN 200710096100A CN 101285967 A CN101285967 A CN 101285967A
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Abstract
The invention relates to a liquid crystal device and a method for manufacturing the same. The liquid crystal display device comprises a substrate, a subtend substrate, a liquid crystal layer, a non-contacting alignment layer and a liquid crystal stable layer. The liquid crystal layer is provided with at least one liquid crystal molecule; the liquid crystal layer is arranged between the substrate and the subtend substrate; the non-contacting alignment layer is arranged between the substrate and the liquid crystal layer and/or between the subtend substrate and the liquid crystal layer; and the liquid crystal stable layer is arranged between the liquid crystal layer and the non-contacting alignment layer. The liquid crystal display device simultaneously combines the non-contacting alignment layer and the liquid crystal stable layer, thereby having the characteristics of providing good and stable alignment effect for the liquid crystal molecule and contributing to simultaneously improving reaction velocity and wide view angle of the liquid crystal molecule and so on.
Description
Technical field
The invention relates to a kind of display device and manufacture method thereof, and particularly relevant for a kind of Liquid crystal disply device and its preparation method.
Background technology
Along with the significantly progressive and the Internet of computing power, the high development of multimedia technology, it is frivolous that the volume of video signal or device for image day by day is tending towards.In the development of display, progress along with photoelectric technology and semiconductor fabrication, have that high image quality, space utilization efficient are good, (liquid crystal display LCD) becomes the main flow in market to the LCD of low consumpting power, advantageous characteristic such as radiationless gradually.
Fig. 1 is the cut-open view of the display panels of prior art.Please refer to Fig. 1, the display panels 100 of prior art mainly is made up of subtend substrate 110, substrate 120 and liquid crystal layer 150, and wherein liquid crystal layer 150 is between subtend substrate 110 and substrate 120.When applying electric field between subtend substrate 110 and substrate 120, the liquid crystal molecule in the liquid crystal layer 150 just can be subjected to effect of electric field and produce deflection, makes liquid crystal layer 150 have the light penetration rate corresponding to this electric field.Thus, display panels 100 just can be according to the electric field level between subtend substrate 110 and the substrate 120, and shows different grey menu.
In addition, in order to provide stable boundary condition, dispose both alignment layers 130 and both alignment layers 140 respectively on subtend substrate 110 and the substrate 120 to the liquid crystal molecules in the liquid crystal layer 150 so that liquid crystal molecule along specific preface to arrangement.On the other hand, recently how market is developed towards directions such as high-contrast (High Contrast Ratio), rapid reaction and wide viewing angles for the performance requirement of LCD, yet, the alignment method that prior art developed out has its shortcoming more, and can't make liquid crystal molecule reach the demand of rapid reaction and wide viewing angle.
For example, the modal way of prior art be with the mode of contact to both alignment layers rub (rubbing) handle so that both alignment layers produces the orientation effect to the liquid crystal molecule of liquid crystal layer.Yet, so not only orientation effect of the practice is difficult for reaching the orientation of multizone (multi-domain), and can't reach wide-visual angle effect, the production method of contact also makes both alignment layers produce micronic dust (dust) or static easily, and be difficult for being applied to large-sized panel and make, be easy to generate the problem of orientation inequality.
U.S. Pat 6778229, US6781665 and US6825892 then propose to add monomer (monomer) in liquid crystal layer, and to liquid crystal layer energising pressure back irradiating ultraviolet light (ultraviolet, UV), make monomer molecule form polymkeric substance, to increase the reaction velocity of liquid crystal molecule.Yet therefore this method needs extra the making on substrate and subtend substrate to apply the required circuit of voltage owing to must apply voltage to liquid crystal layer before irradiates light.In addition, making multi-zone vertical alignment nematic (multi-domain vertical alignment, during MVA) liquid crystal indicator, still need on ito substrate, to form orientation slit (slit) or projection structures such as (protrusion), and applying the orientation that voltage utilizes Electric Field Distribution to produce multiple domain for liquid crystal molecule, irradiating ultraviolet light makes monomer form polymkeric substance again.Yet orientation slit (slit) or projection structures such as (protrusion) have increased process complexity relatively, and make yield reduce.
In addition, U.S. Pat 6696144 adopts the mode of light orientation, utilizes the UV light of linear polarization to come the irradiates light alignment materials, makes the both alignment layers molecule have specific alignment direction, to solve micronic dust and the electrostatic problem that traditional contact alignment method is easy to generate.But, this both alignment layers that forms in light orientation mode for the anchorage force (anchoring energy) of liquid crystal molecule a little less than, can't reach preferable orientation effect, and because the stability deficiency of light alignment materials itself, the orientation ability can be successively decreased in time.In addition,, be difficult for being applied to large-sized panel and make, exposure machine cost, power consumption and time shutter are also arranged simultaneously than shortcomings such as length because this method needs the linearly polarized photon of high-purity (high extinction ratio).
Prior art also proposes other contactless alignment method, for example beam-plasma orientation, oblique evaporation orientation or utilize laser interference to form little groove etc., but these modes also more or less exist complex process, performance difficulty, equipment cost height and anchorage force not as shortcomings such as contact alignment methods.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of liquid crystal indicator that has good multizone (multi-domain) LCD alignment effect and liquid crystal reaction velocity simultaneously concurrently.
The present invention also proposes a kind of method for making of liquid crystal indicator, and its step is simple, and cost of manufacture is lower, and has higher manufacture process yield.
For reaching above-mentioned or other purpose, the present invention proposes a kind of liquid crystal indicator, comprises substrate, subtend substrate, liquid crystal layer, contactless both alignment layers and liquid crystal resistant strata.Liquid crystal layer has a plurality of liquid crystal molecules, and liquid crystal layer is disposed between substrate and this subtend substrate.Contactless both alignment layers is disposed between substrate and the liquid crystal layer and/or between subtend substrate and the liquid crystal layer, and the liquid crystal resistant strata is disposed between liquid crystal layer and the contactless both alignment layers.
In one embodiment of the invention, liquid crystal indicator has a plurality of pixels, and same pixel in liquid crystal molecule have a plurality of different alignment direction, for example have 4 or 8 alignment direction.
In one embodiment of the invention, the material of contactless both alignment layers can be photoisomerization (photo-induced isomerization) material, photocrosslinking (photo-induced crosslinking) material, photic decomposition (photo-induced degradation) material or dual function light orientation (bi-functionalphoto alignment) material.
In one embodiment of the invention, the liquid crystal resistant strata for example is to be formed by one or more reactive group monomer polymerizations.
The present invention also proposes a kind of method for making of liquid crystal indicator, substrate and subtend substrate at first are provided, then form contactless both alignment layers in substrate and subtend substrate at least on one of them, form liquid crystal layer then between substrate and subtend substrate, and between liquid crystal layer and contactless both alignment layers, form the liquid crystal resistant strata.
The formed liquid crystal indicator of said method for example has a plurality of pixels, and the method for making of liquid crystal indicator of the present invention can have a plurality of different alignment direction with liquid crystal molecule in the liquid crystal resistant strata makes same pixel by contactless both alignment layers.For example, can make the liquid crystal molecule in the same pixel have 4 or 8 alignment direction.
In one embodiment of the invention, the method of the contactless both alignment layers of above-mentioned formation comprises and forms earlier the alignment materials layer in this substrate and this subtend substrate at least on one of them, afterwards, adopt contactless alignment method to make the alignment materials layer become contactless both alignment layers.In addition, contactless alignment method for example is light alignment method, ion beam alignment method, beam-plasma alignment method, oblique evaporation alignment method or utilizes the laser interference method to form little groove.In addition, making before the alignment materials layer becomes contactless both alignment layers, also comprise dry alignment materials layer.
In one embodiment of the invention, the method of above-mentioned formation liquid crystal resistant strata is included in and forms before the liquid crystal layer, on contactless both alignment layers, form liquid crystal earlier and stablize material layer with one or more reactive group monomers, or when forming liquid crystal layer, in liquid crystal layer, add the reactive group monomer, then, make the reactive group monomer polymerization form the liquid crystal resistant strata.Wherein, the method that makes the reactive group monomer polymerization form the liquid crystal resistant strata comprises photopolymerization or thermal polymerization.In addition, stablize material layer, then before making reactive group monomer polymerization formation liquid crystal resistant strata, comprise that also dry liquid crystal stablizes material layer if on contactless both alignment layers, form earlier liquid crystal with one or more reactive group monomers.
The material of above-mentioned reactive group monomer can be as the formula (1):
Formula (1):
Wherein,
B, B ' comprise aromatic series (Aromatic) or saturated rings alkane (saturated ring core);
X, Y comprise end group (terminal group) or reactive group (reactive group);
R, R ', R are " for linking group (binding group); And
Z, Z ' are side chain substituents.
Above-mentioned reactive group can be acrylate (acrylate), methacrylate (methacrylate) or epoxy resin (epoxy).In addition, R, R ' and the R " monomer that for example comprises other free radical initial actions such as alkylidene (alkylene), ester group or ether separately.For example, the reactive group monomer can for:
Or
In one embodiment of the invention, above-mentioned substrate be thin-film transistor array base-plate and colored optical filtering substrates one of them, and the subtend substrate is thin-film transistor array base-plate and colored optical filtering substrates another.
In one embodiment of the invention, the tilt angle of liquid crystal molecule (pre-tilt angle) is between 0 °～45 °, and between 80 °～89 °.
Based on above-mentioned, liquid crystal indicator of the present invention is simultaneously in conjunction with contactless both alignment layers and liquid crystal resistant strata, to have good LCD alignment effect and liquid crystal reaction velocity concurrently, wherein the liquid crystal resistant strata helps to increase the anchorage force of contactless both alignment layers for liquid crystal molecule, and can improve the stability of liquid crystal molecule, further increase the reaction velocity of liquid crystal molecule.In addition, liquid crystal indicator of the present invention does not need to apply in addition voltage on making, do not need additionally to form alignment structure, so technology is comparatively simple yet, has preferred manufacture process yield yet.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the cut-open view of the display panels of prior art.
Fig. 2 A and 2B are respectively a kind of thin-film transistor array base-plate of liquid crystal indicator of the preferred embodiments of the present invention and the vertical view of colored optical filtering substrates.
Fig. 3 A is the sectional view of a kind of liquid crystal indicator of the preferred embodiments of the present invention.
Fig. 3 B is the sectional view of the another kind of liquid crystal indicator of the preferred embodiments of the present invention.
Fig. 4 illustrates the pixel that the present invention has the stable twisted nematic liquid crystal indicator of multizone orientation.
Fig. 5 illustrates the pixel of the another kind of multi-area vertical alignment type liquid crystal display device of the present invention.
Fig. 6 A～6G illustrates the method for making of a kind of display panels of the preferred embodiments of the present invention in regular turn.
Fig. 7 A～7G illustrates the method for making of the another kind of display panels of the preferred embodiments of the present invention in regular turn.
Main description of reference numerals
100: display panels
110: the subtend substrate
120: substrate
130,140: both alignment layers
150: liquid crystal layer
200: liquid crystal indicator
210: thin-film transistor array base-plate
212: scan wiring
214: data wiring
216: the capacitance electrode distribution
218: thin film transistor (TFT)
219: pixel electrode
220: colored optical filtering substrates
222: color filter patterns
224: black matrix
230: liquid crystal layer
230a: liquid crystal compound
240: contactless both alignment layers
240a: alignment materials layer
250: the liquid crystal resistant strata
250a: liquid crystal is stablized material layer
Embodiment
Liquid crystal indicator proposed by the invention mainly comprises members such as substrate, subtend substrate, liquid crystal layer, contactless both alignment layers and liquid crystal resistant strata, wherein substrate for example is a thin-film transistor array base-plate, and the subtend substrate for example is a colored optical filtering substrates, liquid crystal layer include at least a liquid crystal molecule and be disposed at thin-film transistor array base-plate and colored optical filtering substrates between.Liquid crystal indicator of the present invention, can be stable twisted nematic liquid crystal indicator (Twist Nematic LCD, TN-LCD), or vertical alignment liquid crystal display device (Vertical Alignment LCD, and along with the difference of the kenel of liquid crystal indicator, the kind of liquid crystal molecule is also different VA-LCD) or the liquid crystal indicator of other kenel,, its tilt angle (pre-tiltangle) for example can be between 0 °～45 °, or between 80 °～89 °.In addition, contactless both alignment layers and liquid crystal resistant strata can be formed between thin-film transistor array base-plate and this liquid crystal layer and/or between colored optical filtering substrates and the liquid crystal layer, in order to improve the orientation effect and the reaction velocity of liquid crystal molecule.
Fig. 2 A and 2B are respectively a kind of thin-film transistor array base-plate of liquid crystal indicator of the preferred embodiments of the present invention and the vertical view of colored optical filtering substrates, and Fig. 3 A is the A-A ' sectional view of this liquid crystal indicator.Shown in Fig. 2 A, 2B and Fig. 3 A, liquid crystal indicator 200 is made of members such as thin-film transistor array base-plate 210, colored optical filtering substrates 220, liquid crystal layer 230, contactless both alignment layers 240 and liquid crystal resistant stratas 250.Thin-film transistor array base-plate 210 has members such as scan wiring 212, data wiring 214, capacitance electrode distribution 216, thin film transistor (TFT) 218, pixel electrode 219, and colored optical filtering substrates 220 has color filter patterns 222 and black matrix (black matrix) 224 members such as grade.
As shown in Figure 3A, the liquid crystal indicator 200 of present embodiment for example is stable twisted nematic liquid crystal indicator (Twist Nematic LCD, TN-LCD), and for the optical characteristics of the stable twisted nematic liquid crystal molecule of arranging in pairs or groups, present embodiment can all dispose contactless both alignment layers 240 and liquid crystal resistant strata 250 on thin-film transistor array base-plate 210 and colored optical filtering substrates 220, and the alignment direction of these two both alignment layers is orthogonal in fact, so that the liquid crystal molecule of the up-and-down boundary of liquid crystal layer 230 carries out preface to arrangement by adjacent both alignment layers respectively, and can improve the orientation effect and the reaction velocity of liquid crystal molecule.
In addition, above-mentioned contactless both alignment layers 240 for example is to adopt contactless alignment method to form.For example, for example be light alignment method, ion beam alignment method, beam-plasma alignment method, oblique evaporation alignment method or utilize the laser interference method to form little groove.Wherein, if employing is the light alignment method, then optional with the material as contactless both alignment layers 240 such as photoisomerization material, photocrosslinking material, photic decomposing material or dual function light alignment materials.Table 1～table 4 is enumerated the molecular structure of several photoisomerization material (table 1), photocrosslinking material (table 2), photic decomposing material (table 3) or dual function light alignment materials (table 4) commonly used respectively, and is as follows:
[table 1]
[table 2]
[table 3]
[table 4]
In addition, above-mentioned liquid crystal resistant strata 250 for example is to be formed by one or more reactive group monomer polymerizations, the molecular structure of reactive group monomer can for:
Wherein, B, B ' for example are aromatic series or saturated rings alkane, X, Y for example are end group or reactive group, R, R ', R " for example be to link group; and Z, Z ' they are side chain substituents; wherein reactive group X, Y can be methyl acrylate, methyl methacrylate or epoxy resin, and binding radicals R, R ' and R " can be respectively the monomer of other free radical initial actions such as alkylidene, ester group or ether.More specifically, the reactive group monomer for example is:
Or
Because the present invention has disposed liquid crystal resistant strata 250 on contactless both alignment layers 240, and the polymerizable molecular of this liquid crystal resistant strata 250 general forms paradigmatic structure along near the alignment direction of both alignment layers haply, acting in conjunction by both alignment layers and liquid crystal resistant strata, therefore help to promote anchorage force to liquid crystal molecule, but and the rotation direction of stabilizing liquid crystal molecule, promote the reaction velocity of liquid crystal molecule.
In addition, except above-mentioned stable twisted nematic liquid crystal indicator, the present invention also for example can be applicable to the liquid crystal indicator of vertical alignment liquid crystal display device or other kenel, shown in Fig. 3 B, be the sectional view that above-mentioned contactless both alignment layers 240 and liquid crystal resistant strata 250 is applied to vertical alignment liquid crystal display device, wherein because the liquid crystal molecule that is adopted is a vertical orientation type liquid crystal molecule, therefore can only carry out orientation, that is form contactless both alignment layers 240 and liquid crystal resistant strata 250 on one of them at thin-film transistor array base-plate 210 or colored optical filtering substrates 220 in a lateral boundaries of liquid crystal layer 230.In other embodiments, also can on thin-film transistor array base-plate 210 and colored optical filtering substrates 220, all form contactless both alignment layers 240 and liquid crystal resistant strata 250 simultaneously.Because contactless both alignment layers 240 is enough to provide powerful anchorage force and orientation effect to liquid crystal molecule with liquid crystal resistant strata 250, helps to promote the anchorage force to liquid crystal molecule, but and the rotation direction of stabilizing liquid crystal molecule, the reaction velocity of lifting liquid crystal molecule.
The above-mentioned contactless both alignment layers 240 and the collocation design of liquid crystal resistant strata 250 also can be used on the liquid crystal indicator of multizone orientation, to reach the effect of liquid crystal molecule being carried out the multizone orientation.Please refer to the present invention that Fig. 4 illustrates and have the pixel of the stable twisted nematic liquid crystal indicator of multizone orientation, wherein (a) and (b), (c) represent respectively and have the pixel that different alignment is arranged, each pixel for example can be divided into 4 different plural orientation zones, and each corresponding specific alignment direction in orientation zone.Because the liquid crystal molecule of present embodiment is a stable twisted nematic, so the windup-degree of liquid crystal molecule reaches 90 degree, and the up-and-down boundary of liquid crystal layer should have orthogonal alignment direction.The solid arrow representative is the alignment direction that contactless both alignment layers 240 on the thin-film transistor array base-plate 210 and liquid crystal resistant strata 250 are provided among Fig. 4, and the dotted arrow representative is the alignment direction that contactless both alignment layers 240 on the colored optical filtering substrates 220 and liquid crystal resistant strata 250 are provided, wherein in order to make accompanying drawing comparatively clear, pixel (a) and (b), (c) of Fig. 4 do not draw colored optical filtering substrates 220.In addition, Fig. 5 illustrates the pixel of the another kind of multi-area vertical alignment type liquid crystal display device of the present invention, wherein (a)～(f) represents respectively and has the pixel that different alignment is arranged, each pixel for example can be divided into 4 or 8 different plural orientation zones, and each corresponding specific alignment direction in orientation zone.Because present embodiment is the pixel of vertical alignment liquid crystal display device, therefore can only carries out orientation and get final product in a lateral boundaries (for example thin-film transistor array base-plate or colored optical filtering substrates) of liquid crystal layer.The solid arrow representative for example is the alignment direction that contactless both alignment layers 240 on the thin-film transistor array base-plate 210 and liquid crystal resistant strata 250 are provided among Fig. 5.
It should be noted that the present invention does not limit the position arrangement and the number of alignment direction in each pixel, the orientation mode that above-mentioned Fig. 4 and 5 is illustrated only illustrates.Below will illustrate the method that the present invention makes above-mentioned contactless both alignment layers 240 and liquid crystal resistant strata 250 again.Please refer to Fig. 6 A～6G, it illustrates the method for making of a kind of display panels of the preferred embodiments of the present invention in regular turn.What deserves to be mentioned is that the diagram of present embodiment adopts the Reference numeral identical with previous embodiment, and has omitted partial component, please refer to previous embodiment about its detailed explanation, no longer repeats to give unnecessary details herein.The method for making of liquid crystal indicator of the present invention is as follows.
At first, as shown in Figure 6A, provide substrate 210, it for example is a thin-film transistor array base-plate, and forms alignment materials layer 240a by the mode of for example printing on substrate 210.Then, shown in Fig. 6 B, optionally alignment materials layer 240a carried out heating steps, with dry alignment materials layer 240a.One preferred embodiment in, for example the substrate 210 that is formed with alignment materials layer 240a can be inserted in the hot environment and toast (baking), with dry alignment materials layer 240a.
Then, shown in Fig. 6 C, make alignment materials layer 240a become contactless both alignment layers 240 with contactless alignment method, wherein this contactless alignment method comprises light alignment method, ion beam alignment method, beam-plasma alignment method, oblique evaporation alignment method or utilizes the laser interference method to form little groove, and relevant alignment materials layer 240a can adopt the common materials of present prior art.For example, when adopting the light alignment method to form contactless both alignment layers 240, optional with the material as alignment materials layer 240a such as photoisomerization material, photocrosslinking material, photic decomposing material or dual function light alignment materials, its detailed molecular structure example as above shown in table 1～4, no longer repeats to give unnecessary details.The liquid crystal indicator of present embodiment for example is the liquid crystal indicator of multizone orientation, therefore can have a plurality of alignment direction by the formed contactless both alignment layers 240 of above-mentioned contactless alignment method.
Then, shown in Fig. 6 D, adopt (one drop filling under the liquid crystal drop, ODF) method forms liquid crystal compound 230a on contactless both alignment layers 240, wherein liquid crystal compound 230a is mixed by liquid crystal material and reactive group monomer, and wherein the material of reactive group monomer can be as described in the above-mentioned embodiment.This is in and forms after the liquid crystal compound 230a, the present invention can optionally carry out heating steps to liquid crystal compound 230a, with dry liquid crystal compound 230a, and the method that heats this liquid crystal compound 230a for example is the substrate 210 that is formed with liquid crystal compound 230a to be inserted in the hot environment toast.
Afterwards, shown in Fig. 6 E, provide subtend substrate 220, and liquid crystal compound 230a is sealed between substrate 210 and the subtend substrate 220.What deserves to be mentioned is, under the liquid crystal drop shown in above-mentioned Fig. 6 C～6E the method, the present invention also can use traditional vacuum impregnation instead, with after substrate 210 and 220 pairs of groups of subtend substrate, utilize vacuum impregnation that liquid crystal compound 230a is injected between substrate 210 and the subtend substrate 220 more earlier.
Afterwards, shown in Fig. 6 F, utilize the liquid crystal compound 230a of light (for example ultraviolet light) irradiation between substrate 210 and subtend substrate 220, so that the reactive group monomer polymerization among the liquid crystal compound 230a, and the intersection between liquid crystal compound 230a and contactless both alignment layers 240, and the intersection between liquid crystal compound 230a and the subtend substrate 220 forms liquid crystal resistant strata 250, and between substrate 210 and subtend substrate 220, form liquid crystal layer 230, and then obtain the liquid crystal indicator 200 shown in Fig. 6 G.In addition, the method that makes reactive group monomer generation polymerization also for example comprises thermal polymerization except photopolymerization.
In the above-described embodiment, the present invention adopts contactless alignment method to form contactless both alignment layers 240, making the liquid crystal molecule on it form multiple alignment direction, and need not utilize the orientation slit of prior art or projection to reach multizone orientation effect by contactless both alignment layers 240.Therefore, the present invention need not apply the orientation that voltage changes the reactive group monomer before irradiates light (as UV light) is made liquid crystal resistant strata 250, even and the orientation ability of contactless both alignment layers 240 descends in time, the orientation of liquid crystal molecule still is subjected to the effect of liquid crystal resistant strata 250 polymerizable moleculars, and can still keep good multizone orientation.
Except above-mentioned method for making, the present invention comprises that also other can make above-mentioned method for making with contactless both alignment layers 240 and liquid crystal indicator 200 of liquid crystal resistant strata 250.Please refer to Fig. 7 A～7G, it illustrates the method for making of the another kind of display panels of the preferred embodiments of the present invention in regular turn.Similarly, the accompanying drawing of present embodiment adopts the Reference numeral identical with previous embodiment, and has omitted partial component, please refer to previous embodiment about its detailed explanation, no longer repeats to give unnecessary details herein.The method for making of this another kind display panels is as follows.
At first, shown in Fig. 7 A～7C, carry out step, and the substrate 210 that is formed with contactless both alignment layers 240 is provided as Fig. 6 A～6C of the foregoing description.Then, shown in Fig. 7 D, form liquid crystal and stablize material layer 250a on contactless both alignment layers 240, it has one or more reactive group monomers, and wherein the material of reactive group monomer is as described in the above-mentioned embodiment.This is in the formation liquid crystal and stablizes after the material layer 250a, the present invention can optionally stablize material layer 250a to liquid crystal equally and carry out heating steps, stablize material layer 250a with dry liquid crystal, to stablize the method for material layer 250a for example be to stablize the substrate 210 of material layer 250a and insert in the hot environment and toast being formed with liquid crystal and heat this liquid crystal.Then, shown in Fig. 7 E, the reactive group monomer polymerization that utilizes the mode of photopolymerization or thermal polymerization that liquid crystal is stablized among the material layer 250a forms liquid crystal resistant strata 250.Afterwards, shown in Fig. 7 F, provide subtend substrate 220, and liquid crystal layer 230 is sealed between substrate 210 and the subtend substrate 220, just can obtain liquid crystal indicator 200 shown in Fig. 7 G.
In sum, the present invention has following feature and advantage at least:
(1) forms the liquid crystal resistant strata on the border of liquid crystal layer, help the stabilizing liquid crystal molecule, and improve the reaction velocity of liquid crystal molecule.
(2) adopt the arrange in pairs or groups mode of contactless both alignment layers of liquid crystal resistant strata to carry out LCD alignment, therefore can significantly promote the anchorage force of contactless both alignment layers, improve the orientation effect liquid crystal molecule.
(3) can provide the orientation effect because of contactless both alignment layers, therefore before making the liquid crystal resistant strata, need not apply the orientation that voltage changes the reactive group monomer, when making liquid crystal indicator, can save and make circuit and the step that applies voltage, help to reduce cost of manufacture, promote the manufacture process yield.
(4) the liquid crystal resistant strata can improve the anchorage force of contactless both alignment layers for liquid crystal molecule, therefore in the making of contactless both alignment layers, helps to increase the material selectivity of contactless both alignment layers.
(5) overcoming the stable twisted nematic liquid crystal indicator utilizes friction process (rubbing) to be difficult for making the problem of multizone orientation traditionally, or utilize contactless orientation mode to make the multizone orientation to still have the problem that anchorage force is not good and the orientation ability descends in time, and the liquid crystal indicator of the stable twisted nematic with good multizone orientation is provided, improve the too small problem in traditional stable twisted nematic liquid crystal indicator visual angle.
(6) be applied in the multizone orientation of vertical alignment liquid crystal display device, can not need additionally to make orientation slit or projection, help to simplify technology, improve the manufacture process yield, and can improve aperture ratio of pixels, promote display quality, and, also reduce the difficulty of display panel large-area manufacturing because technology is simple.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; those skilled in the art; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention should be looked the scope that appending claims defines and is as the criterion.
Claims (21)
1. liquid crystal indicator comprises:
Substrate;
The subtend substrate;
Liquid crystal layer has at least a liquid crystal molecule, and this liquid crystal layer is disposed between this substrate and this subtend substrate;
Contactless both alignment layers is disposed between this substrate and this liquid crystal layer and/or between this subtend substrate and this liquid crystal layer; And
The liquid crystal resistant strata is disposed on this contactless both alignment layers.
2. according to the liquid crystal indicator of claim 1, it has a plurality of pixels, and these liquid crystal molecules in the same pixel have a plurality of different alignment direction.
3. according to the liquid crystal indicator of claim 1, wherein the material of this contactless both alignment layers comprises photoisomerization (photo-induced isomerization) material, photocrosslinking (photo-inducedcrosslinking) material, photic decomposition (photo-induced degradation) material or dual function light orientation (bi-functional photo alignment) material.
4. according to the liquid crystal indicator of claim 1, wherein this liquid crystal resistant strata is to be formed by one or more reactive group monomer polymerizations.
5. according to the liquid crystal indicator of claim 4, wherein the material of these reactive group monomers is as the formula (1):
Formula (1):
Wherein,
B, B ' comprise aromatic series (Aromatic) or saturated rings alkane (saturated ring core);
X, Y comprise end group (terminal group) or reactive group (reactive group);
R, R ', R are " for linking group (binding group); And
Z, Z ' are side chain substituents.
6. according to the liquid crystal indicator of claim 5, wherein reactive group comprises acrylate (acrylate), methacrylate (methacrylate) or epoxy resin (epoxy).
7. according to the liquid crystal indicator of claim 5, wherein R, R ' and R " comprise alkylidene (alkylene) separately.
8. according to the liquid crystal indicator of claim 5, wherein the material of these reactive group monomers is:
9. according to the liquid crystal indicator of claim 5, wherein the material of these reactive group monomers is:
10. the method for making of a liquid crystal indicator comprises:
Substrate and subtend substrate are provided;
Form contactless both alignment layers in this substrate and this subtend substrate at least on one of them; And
Form liquid crystal layer between this substrate and this subtend substrate, and on this contactless both alignment layers, form the liquid crystal resistant strata.
11. method for making according to the liquid crystal indicator of claim 10, wherein formed this liquid crystal indicator has a plurality of pixels, and makes these liquid crystal molecules in the same pixel have a plurality of different alignment direction by this contactless both alignment layers and this liquid crystal resistant strata.
12. according to the method for making of the liquid crystal indicator of claim 10, the method that wherein forms this contactless both alignment layers comprises:
Form the alignment materials layer in this substrate and this subtend substrate at least on one of them; And
Adopt contactless alignment method to make this alignment materials layer become this contactless both alignment layers.
13. according to the method for making of the liquid crystal indicator of claim 12, wherein this contactless alignment method comprises light alignment method, ion beam alignment method, beam-plasma alignment method, oblique evaporation alignment method or utilizes the laser interference method to form little groove.
14., wherein, also comprise dry this alignment materials layer making before this alignment materials layer becomes this contactless both alignment layers according to the method for making of the liquid crystal indicator of claim 12.
15. according to the method for making of the liquid crystal indicator of claim 10, the method that wherein forms this liquid crystal resistant strata comprises:
Before forming this liquid crystal layer, on this contactless both alignment layers, form liquid crystal earlier and stablize material layer with one or more reactive group monomers, or when forming this liquid crystal layer, these reactive group monomers of adding in this liquid crystal layer; And
Make these reactive group monomer polymerizations form this liquid crystal resistant strata.
16. method for making according to the liquid crystal indicator of claim 15, wherein stablize material layer if on this contactless both alignment layers, form this liquid crystal earlier with one or more reactive group monomers, then make before these reactive group monomer polymerizations form this liquid crystal resistant strata, comprising that also dry this liquid crystal stablizes material layer.
17. according to the method for making of the liquid crystal indicator of claim 15, wherein the material of these reactive group monomers is as the formula (1):
Formula (1):
Wherein,
B, B ' comprise aromatic series (Aromatic) or saturated rings alkane (saturated ring core);
X, Y comprise end group (terminal group) or reactive group (reactive group);
R, R ', R are " for linking group (binding group); And
Z, Z ' are side chain substituents.
18. according to the method for making of the liquid crystal indicator of claim 17, wherein reactive group comprises acrylate (acrylate), methacrylate (methacrylate) or epoxy resin (epoxy).
19. according to the method for making of the liquid crystal indicator of claim 17, wherein R, R ' and R " comprise alkylidene (alkylene) separately.
20. according to the method for making of the liquid crystal indicator of claim 17, wherein the material of these reactive group monomers is:
21. according to the method for making of the liquid crystal indicator of claim 17, wherein the material of these reactive group monomers is:
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100961009A CN101285967A (en) | 2007-04-13 | 2007-04-13 | Lcd device and its manufacture method |
Applications Claiming Priority (1)
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| CNA2007100961009A CN101285967A (en) | 2007-04-13 | 2007-04-13 | Lcd device and its manufacture method |
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| CN101893789A (en) * | 2010-07-07 | 2010-11-24 | 深圳超多维光电子有限公司 | Alignment layer materials, alignment layer manufacturing process and display panel |
| CN103226262A (en) * | 2012-01-31 | 2013-07-31 | 群康科技(深圳)有限公司 | Image display system and method for manufacturing liquid crystal display device |
| CN103869540A (en) * | 2012-12-10 | 2014-06-18 | 京东方科技集团股份有限公司 | Orientation layer forming method |
| CN104181774A (en) * | 2013-05-22 | 2014-12-03 | 达兴材料股份有限公司 | Acrylic resin composition, alignment film formed therefrom, and three-dimensional liquid crystal display |
| CN104375328A (en) * | 2014-11-28 | 2015-02-25 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method of display panel |
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| CN101893789A (en) * | 2010-07-07 | 2010-11-24 | 深圳超多维光电子有限公司 | Alignment layer materials, alignment layer manufacturing process and display panel |
| CN103226262B (en) * | 2012-01-31 | 2015-10-14 | 群康科技(深圳)有限公司 | The manufacture method of image display system and liquid crystal indicator |
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| CN103869540A (en) * | 2012-12-10 | 2014-06-18 | 京东方科技集团股份有限公司 | Orientation layer forming method |
| CN104181774A (en) * | 2013-05-22 | 2014-12-03 | 达兴材料股份有限公司 | Acrylic resin composition, alignment film formed therefrom, and three-dimensional liquid crystal display |
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| CN104777673A (en) * | 2015-04-24 | 2015-07-15 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method thereof |
| CN104777673B (en) * | 2015-04-24 | 2018-03-13 | 深圳市华星光电技术有限公司 | Display panel and its manufacture method |
| CN105676540A (en) * | 2016-04-05 | 2016-06-15 | 深圳市华星光电技术有限公司 | Manufacturing method of liquid crystal display panel |
| CN107844006A (en) * | 2016-09-21 | 2018-03-27 | 上海微电子装备（集团）股份有限公司 | A kind of smooth alignment system |
| CN107844006B (en) * | 2016-09-21 | 2020-06-16 | 上海微电子装备（集团）股份有限公司 | Optical alignment system |
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