CN103454811B - The producing device of liquid crystal aligning layer and method - Google Patents
The producing device of liquid crystal aligning layer and method Download PDFInfo
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- CN103454811B CN103454811B CN201310415258.3A CN201310415258A CN103454811B CN 103454811 B CN103454811 B CN 103454811B CN 201310415258 A CN201310415258 A CN 201310415258A CN 103454811 B CN103454811 B CN 103454811B
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- liquid crystal
- liquid
- crystal aligning
- aligning layer
- substrate
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Abstract
The present invention discloses a kind of producing device and the method for liquid crystal aligning layer, in manufacturing process for the existing liquid crystal aligning layer of solution, there is the bad of point, line, surface in the liquid crystal aligning layer that the diffusion of orientation liquid is depended on the mobility of liquid self completely and caused, thus the display of the liquid crystal display resulted in is bad and design.The producing device of described liquid crystal aligning layer includes in order to the spray equipment of coating orientation liquid on substrate, and in order to launch the ultrasonic transmitter of ultrasonic wave to described orientation liquid.The producing device of liquid crystal aligning layer of the present invention and method, by mechanism and the cavitation of ultrasonic wave, overcome the problem that orientation liquid diffusional resistance that the out-of-flatness of substrate surface causes is big, make the solute being orientated liquid the most dispersed simultaneously, thus define liquid crystal aligning layer of good performance.
Description
Technical field
The present invention relates to display field, particularly relate to the system of the liquid crystal aligning layer of liquid crystal indicator
Make device and method.
Background technology
Liquid crystal display generally includes the color membrane substrates and array base palte being oppositely arranged.At described coloured silk
It is additionally provided with layer of liquid crystal molecule between film substrate and array base palte.Described color membrane substrates and array base
Plate is being typically provided with liquid crystal aligning layer towards the side of liquid crystal molecule.The described liquid crystal of existing making
The technique of oriented layer is as follows:
Dripping to substrate on by orientation liquid by shower nozzle by ink-jetting process, orientation liquid is at gravity, table
Surface tension and and substrate between invade under the effect of humidity, substrate spreads film forming, then passes through
Solidify described orientation liquid, thus form liquid crystal aligning layer.
In said method, orientation liquid diffusion completely depend on orientation liquid gravity, surface tension with
And and substrate between invade humidity, due to substrate itself and orientation liquid between wettability, substrate
The flatness on surface solute not and in orientation liquid is the most scattered uneven, holds very much
Easily cause the liquid crystal aligning layer appearance point of formation, line, the worst.And in real process,
No matter it is on array base palte or color membrane substrates, all defined very before forming liquid crystal aligning layer
Being used for the structure of display, these structures cause the surface of substrate out-of-flatness occur, and the highest
The display of resolution ratio, then substrate flatness before forming liquid crystal aligning layer is the poorest.
Summary, it is provided that one can avoid the problems referred to above to form the second best in quality liquid of performance
Brilliant oriented layer is urgent problem.
Summary of the invention
(1) goal of the invention
For the problems referred to above, it is desirable to provide one can make orientation liquid at irregular substrate
Upper even spread, and make the solute full and uniform dispersion in orientation liquid in a solvent, to form height
The producing device of the liquid crystal aligning layer of performance and method.
(2) technical scheme
For reaching above-mentioned purpose, the producing device of liquid crystal aligning layer of the present invention, including in order at substrate
The spray equipment of upper coating orientation liquid, and in order to launch the ultrasonic of ultrasonic wave to described orientation liquid
Wave launcher.
Preferably,
Along the direction with described substrate-parallel, described ultrasonic transmitter is arranged on described spraying dress
At least side put.
Preferably, along the direction with described substrate-parallel, the both sides that described spray equipment is relative are equal
It is installed with described ultrasonic transmitter.
Preferably, described ultrasonic transmitter is positioned at the side of described spray equipment；Described making
Device also includes the circulator rotated in order to described ultrasonic transmitter around described spray equipment.
Preferably, described ultrasonic transmitter is installed in the side of described spray equipment；Described system
Make the rotation that device also includes making described ultrasonic transmitter and described spray equipment rotate
Turn equipment.
For reaching above-mentioned purpose, the preparation method of liquid crystal aligning layer of the present invention, including:
Coating orientation liquid on substrate；
Ultrasonic wave is applied to described orientation liquid.
Further, after applying ultrasonic wave to described orientation liquid, also include using ultraviolet
Or it is orientated liquid described in hot setting, to form liquid crystal aligning layer.
Further, the frequency range of described ultrasonic wave is 40～130khz.
Further, described super to the applying of described orientation liquid while coating orientation liquid on substrate
Sound wave.
Further,
Coating orientation liquid on substrate, and after described orientation liquid has coated, to described orientation
Liquid applies ultrasonic wave.
Further, described substrate is array base palte or color membrane substrates.
(3) liquid crystal aligning layer producing device of the present invention and the beneficial effect of method
Liquid crystal aligning layer manufacturing method thereof of the present invention and device, by the liquid crystal being coated on substrate
Orientation liquid applies ultrasonic wave, makes orientation liquid under the machinery and cavitation of ultrasonic wave, overcomes base
The resistance that plate out-of-flatness causes, uniformly spreads on substrate, and makes the solute in orientation liquid simultaneously
It is substantially dissolved in solvent, such that it is able to form liquid crystal aligning layer of good performance.Avoid and take
Orientation liquid is caused to spread bad, to make formation liquid crystal aligning layer to liquid because of the uneven of substrate
Became uneven and then disorderly and unsystematic when causing liquid crystal aligning, thus form dim spot, color spot, point
Line face bad, the solute in orientation liquid dissolves in a solvent more uniformly simultaneously, so that
The homogeneity that must be orientated liquid is preferable, so that the homogeneity of the liquid crystal aligning layer formed is the most more
Good.
Accompanying drawing explanation
Fig. 1 is that the producing device making liquid crystal of the liquid crystal aligning layer described in the embodiment of the present invention two takes
One of schematic diagram when layer；
Fig. 2 is that the producing device making liquid crystal of the liquid crystal aligning layer described in the embodiment of the present invention two takes
Two of schematic diagram when layer；
Fig. 3 is the plan structure schematic diagram of the producing device of the liquid crystal aligning layer shown in Fig. 2；
Fig. 4 is the liquid crystal aligning layer manufacturing method thereof schematic flow sheet described in the embodiment of the present invention one；.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, the present invention is described further.
Embodiment one:
The producing device of liquid crystal aligning layer described in the present embodiment, including the spray in order to coat orientation liquid
Coating device and in order to coating after be orientated liquid launch ultrasonic wave ultrasonic transmitter.
The producing device of the liquid crystal aligning layer described in the present embodiment, adds in traditional equipment
Ultrasonic transmitter, in order to make orientation liquid be dispersed on substrate, and make in orientation liquid molten
Matter is dispersed in a solvent.Described in concrete implementation process, spray equipment is ultrasonic with described
Wave launcher is separately positioned, it is also possible to be the most separately positioned.Institute in concrete implementation process
State excusing from death wave launcher and be preferably provided at the shower nozzle side therein of described spray equipment.
It is concrete as it is shown in figure 1, the producing device of liquid crystal aligning layer described in the present embodiment includes
The spray equipment 130 being separated from each other and ultrasonic transmitter 140.Described spray equipment 130 exists
Upper orientation liquid drop 160, described ultrasonic transmitter 140 is dripped on substrate 110 and substrate 120
Produce ultrasonic wave and also launch ultrasonic wave to orientation liquid, make orientation liquid smooth be uniformly dispersed in base
On plate.Such as 170 form for the liquid crystal aligning liquid after ul-trasonic irradiation represented in Fig. 1.
In concrete implementation process, can spray equipment and ultrasonic transmitter be distributed in adjacent
On station, and ultrasonic wave is positioned at next station of described spray equipment, and described substrate is in transmission belt
Or transmission board effect under, sequentially pass through described in be provided with spray equipment and ultrasonic transmitter
Station, thus complete the orientation coating of liquid and ultrasonic wave processes.
Using said structure, the producing device of described liquid crystal aligning layer keeps static, by transmission
Substrate realizes relative motion between producing device and array base palte, thus on the basis of conventional apparatus
The improvement carried out is few, thus realizes simplicity.
In concrete implementation process, described ultrasonic transmitter can also be with described spray equipment
Contact is arranged, and concrete includes following several ways:
Described ultrasonic transmitter is arranged at least side of described spray equipment.Use this knot
During structure, in front, orientation liquid is sprayed out described spray equipment by spraying, described ultrasonic transmitter
Launch ultrasonic wave the most in the wings, thus realize limit coated side ultrasonication in orientation liquid.When only institute
The side stating spray equipment is provided with described ultrasonic transmitter, then substrate and the system of liquid crystal aligning layer
The direction of relative movement making device is only capable of being a direction, but due to the number of ultrasonic transmitter
Mesh is few, thus saves equipment cost.
When the opposite sides of described spray equipment, to be all installed with described ultrasonic transmitter then described
Substrate includes both direction with the direction of relative movement of liquid crystal aligning layer, takes when controlling described liquid crystal
To the producing device of liquid relative to described substrate motion time, when one piece of substrate completes described orientation liquid
Coating and ultrasonic wave effect after vacate station, start to take described in rear one piece of substrate coating
To liquid.The producing device of described liquid crystal aligning layer can be started working from current location, and without
The opposite side being returned to substrate is started working, thus improves operating efficiency.Concrete such as figure
Shown in 2-Fig. 3, the producing device of described liquid crystal aligning layer includes spray equipment 240 and fixes
It is connected to the ultrasonic transmitter 251,252 of spray equipment 240 both sides.Presently described liquid crystal
The producing device of layer is the side marked such as arrow 260 with the direction of relative movement of described substrate
To, then the ultrasonic transmitter being currently at duty is 251, and it is generated and transmitted by ultrasonic
Ripple 250.Described spray equipment 240 sprays described orientation liquid 220 drop, and described drop is super
Under the effect of sound wave 250, define orientation liquid film 230.
In concrete implementation process, when described ultrasonic transmitter is to be movably connected in described spray
During the side of coating device, the same both sides from substrate that can realize proceed by dripping of orientation liquid
Go out and ul-trasonic irradiation, specific as follows:
The first: described ultrasonic transmitter is only located at the side of described spray equipment；Described system
Make the circulator that device also includes rotating around described spray equipment in order to described ultrasonic transmitter.
During implementing, described excusing from death wave launcher can around described spray equipment downwards or to
Upper rotation 180, rotates the opposite side to this side from side.Concrete described circulator can be
Including one be looped around the peripheral rotary rail of described spray equipment, described ultrasonic transmitter hangs
Hanging over below described rotary rail, described ultrasonic transmitter is permissible under the effect of driving means
Move around described spray equipment.Concrete described driving means can be rotation motor.In employing
State structure, both eliminate a set of ultrasonic transmitter, the making dress of the most described liquid crystal aligning layer
Put and can start working from least two direction of substrate.
The second, described ultrasonic transmitter is installed in the side of described spray equipment；Described system
Make the rotation that device also includes making described ultrasonic transmitter and described spray equipment rotate
Turn equipment.At the present embodiment, spray equipment and ultrasonic transmitter are rotated together with, concrete
Described slewing can be the structures such as rotatable mechanical arm.Same, said structure was both
Eliminating a set of ultrasonic transmitter, the producing device of the most described liquid crystal aligning layer can be from base
Start working at least two direction of plate.
Summary, the liquid crystal that the producing device of the liquid crystal aligning layer described in the present embodiment is produced
Oriented layer, has the advantages such as homogeneity is good.
Embodiment one:
The preparation method of the present embodiment liquid crystal aligning layer includes:
Coating orientation liquid on substrate；
Ultrasonic wave is applied to described orientation liquid.
Ultrasonic wave is usually frequency sound wave more than 20 KHzs, has directionality, penetrates energy
Power can hear the advantage that the spread speed of sound wave is fast by force, in a liquid compared with human ear, and concrete
During realization, described ultrasonic wave has the strongest mechanism and cavitation.
Described mechanism shows that the sound wave of ultrasonic wave has the strongest shake in transmitting procedure
Action use, such that it is able to by the vibrations of mechanism for orientation liquid at irregular substrate surface
Cross over drag uniform dispersion and provide power, make the solute in orientation liquid disperse in a solvent simultaneously
More uniform.
Described cavitation is due under the effect of ultrasonic wave, make orientation liquid internal produce much by
The minute bubbles that gas is formed.The reason producing minute bubbles has:
First: inside orientation liquid under the effect of ultrasonic wave, occur that local tension is formed negative
Pressure, the reduction of pressure makes originally to be dissolved in the gas supersaturation of liquid, and then gas overflowing, thus
Form minute bubbles；
Second: powerful tension is more than the cohesive force between fluid molecule, thus pulls appearance
" tear " and define a part of cavity and realize cavitation.
The minute bubbles that cavitation is formed can produce the highest instantaneous pressure rupturing when, from
And create the strongest mechanism, strengthen the effect of solution molecule diffusion, rupturing of minute bubbles
Also can act on solute simultaneously, the solute of gathering be broken up, promotes solute to be preferably dissolved in molten
In agent.
In sum, ultrasonic wave, for the making of liquid crystal aligning layer, has the benefit that and passes through
Mechanism and cavitation, it is thus possible to it is uneven to make orientation liquid well overcome substrate surface
Whole, thus spread more uniform on substrate, thus form the oriented layer that homogeneity is good, enter
Without oriented layer sunburner occurs, the problem that local thickness is inadequate.Simultaneously at ultrasonic wave
Under shock effect, orientation liquid in solute be more uniformly dispersed in solvent thus formed each
The homogeneity of the oriented layer at place is more preferable.
In concrete implementation process, after described ul-trasonic irradiation, need to solidify described orientation
Liquid, the method for solidification includes multiple, concrete as air-dried.But in order to accelerate to solidify to improve life
Produce efficiency, preferably employ ultraviolet curing or hot setting in the present embodiment.
Concrete implementation process at least includes following two embodiment:
Embodiment one, as shown in Figure 4, the described liquid crystal aligning layer that the present embodiment provides makes
Method includes:
Step S1: coating orientation liquid on substrate；
Step S2: apply ultrasonic to described orientation liquid after whole substrate completes the coating of orientation liquid
Ripple.
Additionally include step S3: solidify described orientation liquid and form oriented layer.When specifically making
The device described in Fig. 1 in embodiment one can be used to realize.
Described liquid crystal aligning layer can be on array base palte or be positioned on color membrane substrates
Liquid crystal aligning layer.
Embodiment two, the described liquid crystal aligning layer manufacturing method thereof that the present embodiment provides includes:
Step A: coating orientation liquid on substrate；
Step B: apply ultrasonic wave to described orientation liquid;
And step A and step B synchronize to carry out.In concrete manufacturing process, can use such as
Producing device described in Fig. 2-Fig. 3 realizes.
In concrete manufacturing process, the frequency range 40～130khz of described ultrasonic wave..Generally
Described ultrasonic wave can be 41khz, 45khz, 60khz, 80khz, 85khz, 90khz, 95khz,
100khz、110khz、120khz、125khz.The frequency of the most described ultrasonic wave
It is not less than 40khz and is not higher than 130khz.The ultra sonic machinery effect of said frequencies and cavitation are made
With the strongest, and produce relatively simple and low cost.
During concrete implementation, the time that described orientation liquid generally applies ultrasonic wave is not
Less than 1s, the parameter that concrete can be 1.5s, 2s, 3s etc. are concrete.Ul-trasonic irradiation time
Between need the flatness according to substrate, oriented layer uniformity requirements to be configured.Implement when using
Can realize ultrasonic with the speed of related movement of substrate by controlling producing device during mode two
The control of ripple action time.
Described in embodiment one and embodiment two, substrate can be arbitrary for liquid crystal display
Substrate in device, concrete can be color membrane substrates or array base palte；Color membrane substrates is for arranging
The substrate of coloured resistance layer, array base palte is the base being provided with pixel electrode and thin film transistor (TFT)
Plate.
The preparation method of the liquid crystal aligning layer described in summary the present embodiment, relative to existing
The preparation method of liquid crystal aligning layer, machinery and cavitation by excusing from death ripple make to be orientated liquid and exist
In the more uniform and orientation liquid of substrate coating, solute Distribution is more uniform, thus improves orientation
The quality of layer, it is to avoid sunburner, local are the thinnest, and Local Solute is piled up and Local Solute
The problem of the sparse oriented layer poor performance caused, and then avoid the liquid crystal indicator of formation
Because the display caused of oriented layer is bad.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant
The those of ordinary skill of technical field, without departing from the spirit and scope of the present invention,
Can also make a variety of changes and modification, the technical scheme of the most all equivalents falls within the present invention
Category, the scope of patent protection of the present invention should be defined by the claims.
Claims (7)
1. the producing device of a liquid crystal aligning layer, it is characterised in that include in order at substrate
The spray equipment of upper coating orientation liquid, and in order to launch the ultrasonic of ultrasonic wave to described orientation liquid
Wave launcher；
Wherein, along the direction with described substrate-parallel, the both sides that described spray equipment is relative are the most solid
It is provided with described ultrasonic transmitter.
2. a preparation method for liquid crystal aligning layer based on the device described in claim 1, its
It is characterised by, including:
Coating orientation liquid on substrate；
Ultrasonic wave is applied to described orientation liquid.
The preparation method of liquid crystal aligning layer the most according to claim 2, it is characterised in that
After applying ultrasonic wave to described orientation liquid, also include using described in ultraviolet or hot setting
Orientation liquid, thus form liquid crystal aligning layer.
4. according to the preparation method of the liquid crystal aligning layer described in Claims 2 or 3, its feature
Being, the frequency range of described ultrasonic wave is 40～130khz.
5. according to the preparation method of the liquid crystal aligning layer described in Claims 2 or 3, its feature
Be, described on substrate coating orientation liquid while to described orientation liquid apply ultrasonic wave.
6. according to the preparation method of the liquid crystal aligning layer described in Claims 2 or 3, its feature
It is,
Coating orientation liquid on substrate, and after described orientation liquid has coated, to described orientation
Liquid applies ultrasonic wave.
7. according to the preparation method of the liquid crystal aligning layer described in Claims 2 or 3, its feature
Being, described substrate is array base palte or color membrane substrates.
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| CN201310415258.3A CN103454811B (en) | 2013-09-12 | 2013-09-12 | The producing device of liquid crystal aligning layer and method |
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| CN201310415258.3A CN103454811B (en) | 2013-09-12 | 2013-09-12 | The producing device of liquid crystal aligning layer and method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107894680B (en) * | 2017-12-19 | 2020-07-31 | 武汉华星光电技术有限公司 | Alignment film coating method and device |
| CN108944085A (en) * | 2018-06-22 | 2018-12-07 | 京东方科技集团股份有限公司 | A kind of vacuum drying cabinet, Minton dryer and vacuum drying method |
| CN109901321B (en) * | 2019-04-02 | 2021-05-07 | Tcl华星光电技术有限公司 | Thin film transistor array substrate and display panel |
| CN113814144A (en) * | 2021-09-27 | 2021-12-21 | 广东灿达股份有限公司 | TFT-LCD display panel manufacturing method and display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412724A (en) * | 1981-03-30 | 1983-11-01 | Raj Technology Partnership | Striating liquid crystal display substrates with ultrasonically cavitating bubble beams |
| CN1641448A (en) * | 2004-01-10 | 2005-07-20 | 中国科学院长春光学精密机械与物理研究所 | Method for preparing molecular self-assembling reinforced light-operated oriented membrane |
| KR20060069764A (en) * | 2004-12-18 | 2006-06-22 | 엘지.필립스 엘시디 주식회사 | Apparatus for fabricating liquid crystal display |
| CN101148591A (en) * | 2007-10-16 | 2008-03-26 | 北京科技大学 | Method for preparing liquid crystal thin film material with controllable reflection bandwidth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100003565A (en) * | 2008-07-01 | 2010-01-11 | 삼성전자주식회사 | Method of manufacturing liquid crystal display |
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2013
- 2013-09-12 CN CN201310415258.3A patent/CN103454811B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412724A (en) * | 1981-03-30 | 1983-11-01 | Raj Technology Partnership | Striating liquid crystal display substrates with ultrasonically cavitating bubble beams |
| CN1641448A (en) * | 2004-01-10 | 2005-07-20 | 中国科学院长春光学精密机械与物理研究所 | Method for preparing molecular self-assembling reinforced light-operated oriented membrane |
| KR20060069764A (en) * | 2004-12-18 | 2006-06-22 | 엘지.필립스 엘시디 주식회사 | Apparatus for fabricating liquid crystal display |
| CN101148591A (en) * | 2007-10-16 | 2008-03-26 | 北京科技大学 | Method for preparing liquid crystal thin film material with controllable reflection bandwidth |
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