CN107367869A - The preparation method of ink-jet printing apparatus and alignment films - Google Patents
The preparation method of ink-jet printing apparatus and alignment films Download PDFInfo
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- CN107367869A CN107367869A CN201710606877.9A CN201710606877A CN107367869A CN 107367869 A CN107367869 A CN 107367869A CN 201710606877 A CN201710606877 A CN 201710606877A CN 107367869 A CN107367869 A CN 107367869A
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- shower nozzle
- preparation
- alignment films
- substrate
- spacing
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
Abstract
The invention provides a kind of ink-jet printing apparatus and the preparation method of alignment films.The ink-jet printing apparatus is included the multiple shower nozzles of spread configuration, two neighboring shower nozzle in a second direction and is arranged at intervals in the first direction with the first spacing, and the first spacing is more than 0mm and is less than or equal to 60mm, and first direction and second direction are vertical.Because two neighboring shower nozzle is arranged at intervals with the first spacing in the first direction, first spacing is more than 0mm and is less than or equal to 60mm, first direction and second direction are vertical, so as to when preparing alignment films using above-mentioned ink-jet printing apparatus, the distance being staggered front to back by shortening adjacent shower nozzle, the printed distance of adjacent shower nozzle during spraying is shortened, and then the time difference printed by reducing adjacent shower nozzle, improve striated defect caused by alignment layer surface.
Description
Technical field
The present invention relates to thin film technique field, in particular to a kind of ink-jet printing apparatus and the preparation side of alignment films
Method.
Background technology
At present, it is equal in order to form a layer thickness in processing procedure substrate surface in alignment films (PI) printing process of LCD industries
Even position accurately carries the PI films of product pattern, and the pattern typically used is APR impact transfer printings and ink-jet printing technology
(INKJET) spraying method.
, in the prior art would generally be by the way of inkjet, herein in order to which processing procedure is easy to use and machine switching is flexible
During processing procedure, printing process is typically to be completed on the preferable ito substrate of flatness or TFT substrate, due to the slightly worse TFT of flatness
It is more uniform that the segment difference of substrate only has several microns, the spray of liquid PI materials to be spread after falling on substrate, so as to the equal of PI coatings
Even property influences less, and then when the alignment films are applied into liquid crystal panel, it is not easy to makes the display of liquid crystal panel that striped be presented
Shape defect (MURA).
However, when forming PI films on the surface of substrate flatness poor (more than ten or even tens microns), such as in post lens 3D
Showing in processing procedure, inkjet sprayings are printed in the preferable TFT substrate of flatness, but in tens microns of flatness
Prism substrate prism structure on printed, liquid PI materials spray fall in prism substrate surface, due to bar shaped prism knot
The influence of structure, liquid PI materials can be caused to spread very well；It is adjacent particularly in inkjet spraying equipment structure designs
The liquid of shower nozzle spraying fall when on substrate can existence time it is poor, along with the influence of substrate surface prism structure, so as to cause
The edge-diffusion of adjacent shower nozzle printing and drying are not to complete the same time, the alignment layer surface to be formed easily is produced striated
Defect (line style mura), so as to directly affects the outward appearance of product and show uniformity.
The content of the invention
It is existing to solve it is a primary object of the present invention to provide the preparation method of a kind of ink-jet printing apparatus and alignment films
The problem of striated defect easily be present in the alignment layer surface being prepared in technology using ink-jet printing technology.
To achieve these goals, according to an aspect of the invention, there is provided a kind of ink-jet printing apparatus, including along
The two multiple shower nozzles of direction spread configuration, two neighboring shower nozzle are arranged at intervals in the first direction with the first spacing, and the first spacing is more than
0mm and it is less than or equal to 60mm, first direction and second direction are vertical.
Further, shower nozzle includes one or more nozzles, multiple nozzles spread configuration in a second direction.
According to another aspect of the present invention, there is provided a kind of preparation method of alignment films, comprise the following steps：S1, make more
The individual shower nozzle arranged in a second direction moves along the first direction, and shower nozzle is taken while movement to substrate surface spraying liquid
To membrane material, the spacing of adjacent each shower nozzle in a first direction is more than 0mm and is less than or equal to 60mm, first direction and second party
To vertical；S2, the liquid aligning film material of substrate surface is solidified, obtains prefabricated membrane；S3, utilize prefabricated film preparation alignment films.
Further, the spacing of adjacent each shower nozzle in a first direction is equal, and preferably spacing is 30~60mm.
Further, in step sl, the translational speed of each shower nozzle is more than 150mm/sec.
Further, speed movement is 180~300mm/sec.
Further, the translational speed of each shower nozzle is identical.
Further, each shower nozzle is spray-coating surface close to a side surface of substrate, and the spray-coating surface size of each shower nozzle is identical, and respectively
Shower nozzle has quantity identical nozzle.
Further, substrate is prism substrate, ito substrate or TFT substrate.
Further, the distance between the peak of substrate surface and minimum point are more than 10 μm, and less than 100 μm.
According to another aspect of the present invention, additionally provide a kind of alignment films, alignment films prepared by above-mentioned preparation method and
Into.
Apply the technical scheme of the present invention, there is provided a kind of ink-jet print including the multiple shower nozzles of spread configuration in a second direction
Brush equipment, because two neighboring shower nozzle is arranged at intervals with the first spacing in the first direction, the first spacing is more than 0mm and is less than or equal to
60mm, first direction and second direction are vertical, so that when preparing alignment films using above-mentioned ink-jet printing apparatus, by shortening phase
The distance that adjacent shower nozzle is staggered front to back, the printed distance of adjacent shower nozzle during spraying is shortened, and then printed by reducing adjacent shower nozzle
The time difference of brush, improve striated defect caused by alignment layer surface.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The Figure of description for forming the part of the present invention is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows that a kind of ink-jet printing apparatus that embodiment of the present invention is provided is arranged at the vertical view of substrate surface and shown
It is intended to；
Fig. 2 shows a kind of schematic flow sheet of the preparation method for alignment films that embodiment of the present invention is provided；
Fig. 3 shows the microscope figure for the alignment films being prepared in comparative example 1 of the present invention；And
Fig. 4 shows the microscope figure for the alignment films being prepared in the embodiment of the present invention 1.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, shower nozzle；20th, substrate.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments of the invention described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
From background technology, the alignment films being prepared in the prior art using ink-jet printing technology are applied to liquid crystal
The problem of striated defect during panel easily be present.The present invention is studied regarding to the issue above, there is provided a kind of ink jet printing
Equipment, including the multiple shower nozzles 10 of spread configuration in a second direction, two neighboring shower nozzle 10 is with the first spacing interval in the first direction
Set, the first spacing is more than 0mm and is less than or equal to 60mm, and first direction and second direction are vertical, and above-mentioned ink-jet printing apparatus is set
The schematic top plan view for being placed in the surface of substrate 20 is as shown in Figure 1.
Due to two neighboring shower nozzle, with the first spacing, interval is set in the first direction in the above-mentioned ink-jet printing apparatus of the present invention
Put, the first spacing is more than 0mm and is less than or equal to 60mm, and first direction and second direction are vertical, so as to be printed using above-mentioned ink-jet
When brush equipment prepares alignment films, the distance that is staggered front to back by shortening adjacent shower nozzle shortens the printing of adjacent shower nozzle during spraying
Distance, and then the time difference printed by reducing adjacent shower nozzle, improve striated defect caused by alignment layer surface.
In ink-jet printing apparatus provided by the invention, shower nozzle 10 can include one or more nozzles, multiple nozzle edges
Second direction spread configuration.Those skilled in the art can be according to the actual requirements to the quantity and set-up mode of the top nozzle of shower nozzle 10
Rationally set.
According to another aspect of the present invention, there is provided a kind of preparation method of alignment films, as shown in Fig. 2 including following
Step：S1, multiple shower nozzles arranged in a second direction are moved along the first direction, and make shower nozzle while movement to substrate table
Face sprays liquid aligning film material, and the spacing of adjacent each shower nozzle in a first direction is more than 0mm and is less than or equal to 60mm, and first
Direction and second direction are vertical；S2, the liquid aligning film material of substrate surface is solidified, obtains prefabricated membrane；S3, utilize prefabricated membrane
Prepare alignment films.
Due to first moving along the first direction multiple shower nozzles in the preparation method, and make shower nozzle while movement to substrate
Surface spraying liquid aligning film material, the spacing of adjacent each shower nozzle in a first direction are more than 0mm and are less than or equal to 60mm, so
Obtain the alignment films with required pattern by the step such as solidifying again afterwards, so as to by shorten that adjacent shower nozzle is staggered front to back away from
From, the printed distance of adjacent shower nozzle during spraying is shortened, and then the time difference printed by reducing adjacent shower nozzle, improve and take
To striated defect caused by film surface.
It is more fully described below in conjunction with Fig. 1 and 2 according to the exemplary of the preparation methods of alignment films provided by the invention
Embodiment.However, these illustrative embodiments can be implemented by many different forms, and it is not construed as
It is only limited to embodiments set forth herein.It should be appreciated that these embodiments are provided so that the public affairs of the application
Open thorough and complete, and the design of these illustrative embodiments is fully conveyed to those of ordinary skill in the art.
First, step S1 is performed：Multiple shower nozzles 10 arranged in a second direction are moved along the first direction, and make shower nozzle 10
It is big to the surface spraying liquid aligning film material of substrate 20, the spacing of adjacent each shower nozzle 10 in a first direction while movement
In 0mm and it is less than or equal to 60mm, first direction and second direction are vertical.
In above-mentioned steps S1, the printed distance of adjacent shower nozzle 10 during in order to further optimize spraying, shorten so as to pass through
The printed distance of adjacent shower nozzle 10 during spraying, more effectively improve striated defect existing for alignment films, it is preferable that adjacent
The spacing of each shower nozzle 10 in a first direction is equal, and preferably spacing is 30~60mm.
In above-mentioned steps S1, by increasing the speed of shower nozzle 10, to shorten the time difference that adjacent shower nozzle 10 prints, also can
It is enough more effectively to improve striated defect existing for alignment films.Now, in another preferred embodiment, each shower nozzle 10
Translational speed be more than 150mm/sec (mm/second)；It is further preferable that above-mentioned speed movement is 180~300mm/sec；And
And in order that there can be identical printed distance between adjacent shower nozzle 10 in moving process, so as to further improve alignment films
Existing striated defect, it is further preferable that the translational speed of above-mentioned each shower nozzle 10 is identical.
In above-mentioned steps S1, substrate 20 can be the preferable TFT substrate of surface smoothness, or flatness is poor
Prism substrate or ito substrate, now, between above-mentioned prism substrate surface or the peak and minimum point on ito substrate surface
Distance can be more than 10 μm, and less than 100 μm.
In above-mentioned steps S1, each shower nozzle 10 is spray-coating surface close to a side surface of aforesaid substrate 20, in order to ensure liquid
Uniformity of the aligning film material in the surface printing of substrate 20, it is preferable that the spray-coating surface size of each shower nozzle 10 is identical, and each shower nozzle 10
With quantity identical nozzle.Those skilled in the art can be according to the actual requirements to the quantity of the top nozzle of shower nozzle 10 and setting side
Formula is rationally set.
After step S1 is completed, step S2 is performed：The liquid aligning film material on the surface of substrate 20 is solidified, obtained prefabricated
Film.Solvent of the liquid aligning film material in solid can be removed by curing process such as high-temperature heatings, so as on the surface of substrate 20
Prefabricated membrane is obtained, those skilled in the art can rationally be set according to prior art to the temperature and time of above-mentioned high-temperature heating
It is fixed.
After step S2 is completed, step S3 is performed：Utilize prefabricated film preparation alignment films.Specifically, by above-mentioned pre-
The surface of film forms the groove for accommodating liquid crystal, has the alignment films of required pattern to obtain surface, above-mentioned pattern can make liquid
Crystalline substance is arranged in a certain direction.Those skilled in the art can be according to prior art to above-mentioned formation groove process
Rational choice is carried out with process conditions.
According to another aspect of the present invention, a kind of alignment films are additionally provided, alignment films are prepared by above-mentioned preparation method
Form.Due to first moving along the first direction multiple shower nozzles in the preparation method, and make shower nozzle while movement to substrate table
Face sprays liquid aligning film material, and the spacing of adjacent each shower nozzle in a first direction is more than 0mm and is less than or equal to 60mm, then
The alignment films with required pattern are obtained by steps such as solidifications again, so that the distance being staggered front to back by shortening adjacent shower nozzle,
The printed distance of adjacent shower nozzle during spraying is shortened, and then the time difference printed by reducing adjacent shower nozzle, improve orientation
Striated defect caused by film surface.
The preparation method of alignment films provided by the invention is further illustrated below in conjunction with embodiment.
Embodiment 1
The preparation method for the alignment films that the present embodiment provides comprises the following steps：
S1, make multiple shower nozzles arranged in a second direction and moved in the first direction with 150mm/sec speed, and make shower nozzle
Liquid aligning film material is sprayed to substrate surface while movement, the spacing of adjacent each shower nozzle in a first direction is
60mm, first direction and second direction are vertical, and aforesaid substrate is TFT substrate, and between the peak of substrate surface and minimum point
Distance be 10 μm；
S2, the liquid aligning film material of substrate surface is solidified, obtains prefabricated membrane；
S3, groove is formed on the surface of above-mentioned prefabricated membrane, to obtain alignment films.
Embodiment 2
The difference of the preparation method and embodiment 1 of the alignment films that the present embodiment provides is：
The spacing of adjacent each shower nozzle in a first direction is equal, and spacing is 30mm.
Embodiment 3
The difference of the preparation method and embodiment 1 of the alignment films that the present embodiment provides is：
The spacing of adjacent each shower nozzle in a first direction is equal, and spacing is 45mm.
Embodiment 4
The difference of the preparation method and embodiment 1 of the alignment films that the present embodiment provides is：
In step sl, the translational speed of each shower nozzle is 155mm/sec.
Embodiment 5
The difference of the preparation method and embodiment 1 of the alignment films that the present embodiment provides is：
In step sl, the translational speed of each shower nozzle is 180mm/sec.
Embodiment 5
The difference of the preparation method and embodiment 1 of the alignment films that the present embodiment provides is：
In step sl, the translational speed of each shower nozzle is 300mm/sec.
Embodiment 6
The difference of the preparation method and embodiment 1 of the alignment films that the present embodiment provides is：
In step sl, the spacing of adjacent each shower nozzle in a first direction is equal, and spacing is 45mm, the shifting of each shower nozzle
Dynamic speed is 240mm/sec, and the translational speed of each shower nozzle is identical.
Embodiment 7
The difference of the preparation method and embodiment 6 of the alignment films that the present embodiment provides is：
Substrate is prism substrate, and the distance between the peak of substrate surface and minimum point are more than 10 μm.
Comparative example 1
The difference of the preparation method and embodiment 1 of the alignment films that this comparative example provides is：
The spacing of adjacent each shower nozzle in a first direction is 65mm.
Using the surface topography for the alignment films being prepared in micro- sem observation above-described embodiment 1 to 7 and comparative example 1, from
Striated defect be present in the alignment layer surface that test result can be seen that in comparative example 1, as shown in the a-quadrant in Fig. 3, and it is real
Obvious striated defect is not present in the alignment layer surface applied in example 1 to 7, wherein, the microscope figure of embodiment 1 is as shown in Figure 4.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
1st, when preparing alignment films using the above-mentioned ink-jet printing apparatus of the present invention, it is staggered front to back by shortening adjacent shower nozzle
Distance, shorten the printed distance of adjacent shower nozzle during spraying, and then the time difference printed by reducing adjacent shower nozzle, improve
Striated defect caused by alignment layer surface；
2nd, present invention also offers a kind of preparation method of alignment films, multiple shower nozzles are first made along first party in the preparation method
To movement, and shower nozzle is set to spray liquid aligning film material to substrate surface while movement, so as to by shortening adjacent shower nozzle
The distance being staggered front to back, shortens the printed distance of adjacent shower nozzle during spraying, so by reduce that adjacent shower nozzle prints when
Between it is poor, improve striated defect caused by alignment layer surface；
3rd, in above-mentioned preparation method, by increasing the speed of shower nozzle, to shorten the time difference of adjacent shower nozzle printing, so as to
Striated defect existing for alignment films can more effectively be improved.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
1. a kind of ink-jet printing apparatus, including the multiple shower nozzles of spread configuration (10) in a second direction, it is characterised in that two neighboring
Shower nozzle (10) is arranged at intervals in the first direction with the first spacing, and first spacing is more than 0mm and is less than or equal to 60mm, and described the
One direction and the second direction are vertical.
2. ink-jet printing apparatus according to claim 1, it is characterised in that the shower nozzle (10) includes one or more spray
Mouth, multiple nozzles are along the second direction spread configuration.
3. a kind of preparation method of alignment films, it is characterised in that comprise the following steps：
S1, multiple shower nozzles (10) arranged in a second direction are moved along the first direction, and make the shower nozzle (10) mobile
Simultaneously to substrate (20) surface spraying liquid aligning film material, adjacent each shower nozzle (10) in said first direction between
Away from more than 0mm and 60mm is less than or equal to, the first direction and the second direction are vertical；
S2, the liquid aligning film material on the substrate (20) surface is solidified, obtains prefabricated membrane；
S3, utilize alignment films described in the prefabricated film preparation.
4. preparation method according to claim 3, it is characterised in that adjacent each shower nozzle (10) is in the first party
Upward spacing is equal, and preferably described spacing is 30~60mm.
5. preparation method according to claim 3, it is characterised in that in the step S1, each shower nozzle (10)
Translational speed is more than 150mm/sec.
6. preparation method according to claim 5, it is characterised in that the speed movement is 180~300mm/sec.
7. the preparation method according to claim 5 or 6, it is characterised in that the translational speed of each shower nozzle (10) is identical.
8. preparation method according to claim 3, it is characterised in that each shower nozzle (10) is close to the substrate (20)
One side surface is spray-coating surface, and the spray-coating surface size of each shower nozzle (10) is identical, and each shower nozzle (10) has quantity
Identical nozzle.
9. preparation method according to claim 3, it is characterised in that the substrate (20) is prism substrate (20), ITO bases
Plate (20) or TFT substrate (20).
10. preparation method according to claim 9, it is characterised in that the peak on substrate (20) surface with it is minimum
The distance between point is more than 10 μm, and less than 100 μm.
11. a kind of alignment films, it is characterised in that the alignment films are as the preparation method any one of claim 3 to 10
It is prepared.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710606877.9A CN107367869A (en) | 2017-07-24 | 2017-07-24 | The preparation method of ink-jet printing apparatus and alignment films |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710606877.9A CN107367869A (en) | 2017-07-24 | 2017-07-24 | The preparation method of ink-jet printing apparatus and alignment films |
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| CN101051155A (en) * | 2006-02-13 | 2007-10-10 | 精工爱普生株式会社 | Droplet ejection apparatus, method for forming functional film, and apparatus for forming liquid crystal alignment film |
| CN101224453A (en) * | 2007-01-15 | 2008-07-23 | 精工爱普生株式会社 | Pattern forming method, droplet ejecting device, and electro-optic device |
| CN102933315A (en) * | 2010-06-08 | 2013-02-13 | 夏普株式会社 | Inkjet application device |
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2017
- 2017-07-24 CN CN201710606877.9A patent/CN107367869A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916736A (en) * | 2005-07-22 | 2007-02-21 | 三星电子株式会社 | Aligning apparatus of inkjet head, inkjet alignment layer printing apparatus including the aligning apparatus, and method thereof |
| CN101051155A (en) * | 2006-02-13 | 2007-10-10 | 精工爱普生株式会社 | Droplet ejection apparatus, method for forming functional film, and apparatus for forming liquid crystal alignment film |
| CN101224453A (en) * | 2007-01-15 | 2008-07-23 | 精工爱普生株式会社 | Pattern forming method, droplet ejecting device, and electro-optic device |
| CN102933315A (en) * | 2010-06-08 | 2013-02-13 | 夏普株式会社 | Inkjet application device |
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