CN109880440A - Ink, inkjet printing methods, film encapsulation method and organic film - Google Patents
Ink, inkjet printing methods, film encapsulation method and organic film Download PDFInfo
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- CN109880440A CN109880440A CN201910199495.8A CN201910199495A CN109880440A CN 109880440 A CN109880440 A CN 109880440A CN 201910199495 A CN201910199495 A CN 201910199495A CN 109880440 A CN109880440 A CN 109880440A
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Abstract
The present invention provides a kind of ink, inkjet printing methods, film encapsulation method and organic films.The ink includes electromagnetic response particle, and the adding proportion of electromagnetic response particle is that 2 to 20 electromagnetic response particles are added in every cu μ m ink.Electromagnetic response particle is added in the present invention in the ink for inkjet printing, the movement of electromagnetic response particle is controlled by way of electromagnetic field, to control the movement of ink, so that the levelling speed of ink is accelerated, it solves in existing InkJet printing processes, the levelling speed of ink is slow, thus the technical issues of seriously affecting the speed of entire packaging technology.
Description
Technical field
The present invention relates to display panel encapsulation field, in particular to a kind of ink, inkjet printing methods, film encapsulation method
And organic film.
Background technique
In conventional display panel packaging technology, it is often used the organic film of inkjet printing methods preparation encapsulation, and
In InkJet printing processes, the levelling speed of ink is slow, can seriously affect the speed of entire packaging technology.
Therefore a kind of solution of ink levelling speed that inkjet printing can be improved urgently is provided.
Summary of the invention
In view of this, the embodiment of the present invention is dedicated to providing a kind of ink, inkjet printing methods, film encapsulation method and has
Machine film, to solve in existing InkJet printing processes, the levelling speed of ink is slow, to seriously affect the speed of entire packaging technology
The technical issues of spending.
According to an aspect of the present invention, a kind of ink, including electromagnetic response particle, the addition of electromagnetic response particle are provided
Ratio is that 2 to 20 electromagnetic response particles are added in every cu μ m ink.
In one embodiment, electromagnetic response particle one in ferroso-ferric oxide, di-iron trioxide, titanium dioxide or
Their any combination.
In one embodiment, the diameter of electromagnetic response particle is 80 nanometers to 300 nanometers, and preferably 100 nanometers to 150 are received
Rice.
According to another aspect of the present invention, a kind of inkjet printing methods are provided, comprising: add in every cu μ m ink
Add 2 to 20 electromagnetic response particles, to form electromagnetic response ink；Inkjet printing is carried out using electromagnetic response ink, to be formed
Electromagnetic response film；The electromagnetic field of substrate is directed toward in setting one on electromagnetic response film, to increase the levelling of electromagnetic response film
Speed.
In one embodiment, forming electromagnetic response ink includes: to add under isolation water oxygen and the atmosphere of illumination into ink
It is powered on magnetic-responsive particles.
In one embodiment, the magnetic field line of electromagnetic field is each perpendicular to substrate.
In one embodiment, from substrate edges to substrate center, the value of the angle of the magnetic field line and substrate of electromagnetic field is gradually
Increase, wherein being not less than 45 degree and less than 90 degree in the magnetic field line of substrate edges and the angular range of substrate, preferably 60 degree extremely
70 degree.
In one embodiment, the electric field strength range of electromagnetic field is 200V/cm to 500V/cm, and magnetic flux range is 200 Gausses
To 500 Gausses.
According to an aspect of the present invention, a kind of film encapsulation method is provided, comprising: utilize chemical vapor deposition preparation the
One inorganic layer；Organic layer is prepared on the first inorganic layer；The second inorganic layer is prepared on organic layer using chemical vapor deposition；Its
In organic layer is prepared on the first inorganic layer using above-mentioned inkjet printing methods.
According to another aspect of the present invention, a kind of organic film is provided, for the thin-film package of display screen, wherein organic
Film is formed by above-mentioned ink printed.
Ink, inkjet printing methods, film encapsulation method and the organic film that the embodiment of the present invention provides, for spraying
Electromagnetic response particle is added in the ink of ink printing, the movement of electromagnetic response particle is controlled in a manner of for example, by electromagnetism, from
And the movement of ink is controlled, so that the levelling speed of ink is accelerated, solve in existing InkJet printing processes, the levelling speed of ink
Slowly, thus the technical issues of seriously affecting the speed of entire packaging technology.
Detailed description of the invention
Fig. 1 show the flow diagram of the inkjet printing methods of one embodiment of the invention offer.
Fig. 2 show the film edge pattern control schematic diagram of one embodiment of the invention offer.
Fig. 3 show the flow diagram of the film encapsulation method of one embodiment of the invention offer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
One embodiment of the invention provides a kind of ink, wherein the ink includes electromagnetic response particle, electromagnetic response particle
Adding proportion be every cu μ m ink in add 2 to 20 electromagnetic response particles.
Specifically, ink can be the ink for InkJet printing processes, which can have following basic
Feature: be the stability of the ink first, the solubility of the solute of ink is high or is uniformly dispersed, to guarantee that ink droplets are stablized
And film forming is uniform；Secondly the rheological characteristic for the solution being made of the ink, including but not limited to viscosity, surface tension and shearing speed
Rate etc. needs to meet the requirement of ink jet printing device, and is capable of forming stable drop, including drop is without satellite point, repeatability
Good, registration etc..
Under normal conditions, after InkJet printing processes, the levelling speed of ink is one of limitation InkJet printing processes often
Big factor, for inventor after being carefully studied, electromagnetic response particle is added in discovery in the ink, then by joined
The ink of electromagnetic response particle applies electromagnetic field, can control the direction of motion of ink, to control the levelling speed of ink.It should
Electromagnetic response particle can be all can generate the particle of attraction or repulsive force with electromagnetic field, and the present invention does not do specific limit to this
It is fixed.
For the adding proportion of electromagnetic response particle, inventor practices to obtain by test of many times, and electromagnetic response particle exists
Adding proportion in ink is that 2 to 20 electromagnetic response particles are added in every cu μ m ink, is most preferred situation.If
Addition is less than 2 electromagnetic response particles in the ink of every cu μ m, then what the ink after adding cannot be applied well
The control of electromagnetism place；If adding the steady of the ink more than 20 electromagnetic response particles, after addition in the ink of every cu μ m
The data such as qualitative, viscosity and surface tension, which will receive highdensity electromagnetic response particle, to be influenced, to not meet mentioned above
The essential characteristic of ink.
Ink in the present embodiment, due to joined suitable electromagnetic response particle, so that the property of ink itself
Changed, make it have the function of incuding with electromagnetic field, so as to control the movement side of ink by electromagnetic field
To and rate, reach the levelling speed of control ink, shorten InkJet printing processes effect often.
In one embodiment, electromagnetic response particle one in ferroso-ferric oxide, di-iron trioxide, titanium dioxide or
Their any combination.
Since electromagnetic response particle needs to incude with electromagnetic field, by the test of many times of inventor, it is believed that electricity
The material of magnetic-responsive particles can be ferroso-ferric oxide, di-iron trioxide or titanium dioxide.It, can be single in these three materials
Using a certain material, such as only use material of the ferroso-ferric oxide as electromagnetic response particle, can also be to these three materials
The classification and content of material carry out permutation and combination, to form the electromagnetic response particle of mixing, such as use four oxygen of 40% proportion
Change the combination of the di-iron trioxide of three-iron and 60% proportion, or matches the ferroso-ferric oxide for 30%, 30% and 40%, three oxidations
Material of the combination of two iron and titanium dioxide as electromagnetic response particle, the present invention do not do the selection of these three materials and proportion
It is specific to limit, it is believed that as long as these three materials, any combination or proportion all should belong in protection scope of the present invention.
Ink in the present embodiment, one in ferroso-ferric oxide, di-iron trioxide, titanium dioxide or their times
Meaning combination, can need to select different proportions according to different, guarantee in the case where not influencing the essential characteristic of ink, most
Big degree generates response with electromagnetic field, to increase the levelling speed of ink to the maximum extent, shortens InkJet printing processes
Often.
In one embodiment, the diameter of electromagnetic response particle is 80 nanometers to 300 nanometers, and preferably 100 nanometers to 150 are received
Rice.
Specifically, in order to guarantee that the level characteristics of ink do not have greatly changed, the size of electromagnetic response particle is needed
It can be only achieved this requirement in a certain range.For example, if the diameter of electromagnetic response particle is added less than 80 nanometers
The active force between electromagnetic response particle and ink itself afterwards is too small, even if electromagnetic response particle can have very well with electromagnetic field
Response, but since the active force between electromagnetic response particle and ink itself is too small, the movement that will lead to ink is rung by electromagnetism
The influence of particle is answered to become smaller, to be unable to reach the effect for increasing ink levelling speed well；In another example if electromagnetic response
The diameter of particle is greater than 300 nanometers, then will appear the possible size of electromagnetic response particle and be large enough to influence the level characteristics of ink
Rank, viscosity, surface tension and shear rate of ink etc. can all be affected, so that the technique to entire inkjet printing produces
Raw negative effect.
Therefore inventor test of many times practice after, discovery electromagnetic response particle diameter limiting value be 80 nanometers and
300 nanometers, and the electromagnetic response particle diameter among the two limiting values, i.e., 80 nanometers to 300 nanometers, belonging to can be real
The range applied.In this enforceable range, preferred range is 100 nanometers to 150 nanometers.In laboratory data, 110 are received
The electromagnetic response particle of rice is optimal diameter dimension, and the electromagnetic response particle of the size can guarantee ink to the greatest extent
Essential characteristic is excellent, and is also optimal to the response of electromagnetic field.
Ink in the present embodiment, the diameter dimension of the electromagnetic response particle of addition, can be in a suitable range
Guarantee in the case where not influencing the essential characteristic of ink, response is generated with electromagnetic field to the greatest extent, thus to the maximum extent
The levelling speed for increasing ink, shortens InkJet printing processes often.
Fig. 1 show the flow diagram of the inkjet printing methods of one embodiment of the invention offer, specifically:
110: adding 2 to 20 electromagnetic response particles, in every cu μ m ink to form electromagnetic response ink.
Electromagnetic response particle is added in the ink used in common inkjet printing, additional amount is in every cu μ m ink
2 to 20 electromagnetic response particles are added, since electromagnetic response particle can generate response to electromagnetic field, the ink after addition becomes
For electromagnetic response ink.
120: inkjet printing is carried out using electromagnetic response ink, to form electromagnetic response film.
Inkjet printing is carried out using existing InkJet printing processes technology, the film formed after printing with electromagnetism due to ringing
Particle is answered, so that the film integrally can generate response to electromagnetic field, forms electromagnetic response film.
130: an electromagnetic field for being directed toward substrate is set on electromagnetic response film, to increase the levelling speed of electromagnetic response film
Degree.
After step 120, it is equivalent to the levelling stage that come into, existing mode is by the film after inkjet printing
It stands, after entire film levelling, in the technique for entering next stage.In the present embodiment, in the levelling stage, apply an electricity
Magnetic field, the electromagnetic field are directed toward substrate, that is, identical as gravitational direction, in electromagnetic field and gravitational double action
Under, the gravitation to substrate is generated to the electromagnetic response particle in ink, allows electromagnetic response particle to accelerate to substrate, thus band
Dynamic ink is accelerated to substrate, which will lead to each ink droplet and squeezed by the ink droplet of its two sides and accelerate to move to two sides,
To improve the levelling speed of entire electromagnetic response film.
Inkjet printing methods in the present embodiment, due to having used the ink with electromagnetic response particle, and in levelling rank
Section is applied with electromagnetic field, so that entire levelling speed is accelerated, in experimental stage, inventors have found that using in the present embodiment
Inkjet printing methods, the technique of entire inkjet printing can shorten 40 seconds or so time, considerably increase inkjet printing work
The efficiency of skill.
In one embodiment, the formation of above-mentioned electromagnetic response ink includes: under isolation water oxygen and the atmosphere of illumination to ink
Electromagnetic response particle is added in water.
In order to which during adding electromagnetic response particle, minimum has an impact the essential characteristic of ink,
During addition, need to completely cut off water oxygen and illumination.It preferably, can be under the atmosphere of nitrogen to addition electromagnetic response particle
Ink is stirred, to guarantee the uniformity and stability of the ink after addition.
Ink in the present embodiment has harsh requirement to environment during adding electromagnetic response particle, thus
Ink property after guaranteeing addition does not change, and in the case where guaranteeing that InkJet printing processes require, increases inkjet printing work
The efficiency of skill.
In one embodiment, the magnetic field line of electromagnetic field is each perpendicular to substrate.This scheme is not necessarily to consider the usage amount of ink
Problem, since all magnetic field lines are each perpendicular to substrate, that is to say, that magnetic field force suffered by nearly all electromagnetic response particle
Direction is all that the direction for the magnetic field force being vertically subject to substrate namely ink can be guaranteed so vertically to substrate
The levelling speed of each position reaches maximization on the film that ink is formed, thus reach the maximization of entire levelling speed,
It maximizes and shortens ink-jetting process often.
Such as Fig. 2, in one embodiment, from substrate edges to substrate center, the angle of the magnetic field line and substrate of electromagnetic field
Value is gradually increased, wherein the angular range of magnetic field line and substrate near substrate edges be not less than 45 degree and less than 90 degree,
It is preferred that 60 degree to 70 degree.
It is unlike the embodiments above, the magnetic field line of the electromagnetic field applied in the present embodiment it is not all perpendicular to
Substrate, only the magnetic field line of heart position is perpendicular to substrate in a substrate, and from substrate center position to the magnetic field of external diffusion
The angle of line and substrate is gradually reduced.In other words, the angle of the center from substrate edges to substrate, magnetic field line and substrate
It is gradually increased, until center forms 90 degree of angle.As shown in Fig. 2, 210 be substrate, it is over the substrate 210 electricity
Magnetic induction ink 220, the magnetic field line from substrate edges to substrate center are 5, what this 5 magnetic field lines and substrate 210 were constituted
Angle is followed successively by angle 230, angle 240, angle 250, angle 260 and angle 270 from substrate edges to substrate center.5 angles in figure
Value, be followed successively by from small to large angle 230 less than angle 240 be less than angle 250 be less than angle 260 be less than angle 270, wherein angle 270 be 90 degree.
It is to be understood that the quantity of the magnetic field line from substrate edges to substrate center can be arbitrary, angle is passed
Increment is also possible to what those skilled in the art set according to demand, and the present invention is not specifically limited in this embodiment, as long as
The angle of center from substrate edges to substrate, magnetic field line and substrate is gradually increased, and all should belong to guarantor of the invention
Protect range.
In the test for several times of inventor, inventors have found that the angle of magnetic field line and substrate near substrate edges is
At 60 degree to 70 degree, it can be reached by the response of the electromagnetic response particle in magnetic field line and ink to electromagnetic response film side
The purpose that edge pattern is managed.Specifically, since the magnetic field line and substrate of basic edge form certain angle, this
When edge ink suffered by gravitation be not but to be collected to substrate center perpendicular to substrate, in this way will lead to
Ink at substrate edges is simultaneously by substrate and the power moved to substrate center position, so as to prevent ink direct
Overflow substrate caused by waste, while can the edge pattern to film manage.In test practice for several times, invention human hair
It is existing, when the angle of magnetic field line and substrate near substrate edges is 67 degree, it can achieve optimal edge pattern control effect
Fruit.
The electromagnetic field applied in the present embodiment, magnetic field line form non-perpendicular angle with substrate at substrate edges, from
And can to receive the power to substrate center in the ink of edge, achieving the effect that manage electromagnetic response film edge
While, reduce the waste of ink.
In one embodiment, the electric field strength range of electromagnetic field is 200V/cm to 500V/cm, and magnetic flux range is 200 Gausses
To 500 Gausses.
It is found in the test of many times of inventor in the actual operation process, when the electric field strength range of electromagnetic field is
200V/cm to 500V/cm can thickness to electromagnetic response film, levelling speed when magnetic flux range is 200 Gausses to 500 Gauss
Degree and edge control reach optimum efficiency, to guarantee prepared by inkjet printing while increasing inkjet printing technology efficiency
The quality of film.
Fig. 3 show the flow diagram of the film encapsulation method of one embodiment of the invention offer, comprising:
310: preparing the first inorganic layer using chemical vapor deposition.
Chemical vapor deposition (CVD) technology is to prepare the conventional method of inorganic layer, and those skilled in the art can be with
The encapsulating material of inorganic layer is selected according to demand, and details are not described herein.
320: preparing organic layer on the first inorganic layer.
When preparing organic layer on the first inorganic layer, the preparation that InkJet printing processes carry out organic layer, the ink-jet can be used
Printing technology uses the ink with electromagnetic response particle, during levelling after printing, applies electromagnetic field, specific step
It can refer to the aforementioned description in relation to InkJet printing processes, details are not described herein, in short, the InkJet printing processes of the present embodiment, lead to
The movement of control electromagnetic response particle is crossed, so that the movement of ink is controlled, to reach the stream for increasing the organic film that ink is formed
Flat speed, to reduce entire inkjet printing often.
330: preparing the second inorganic layer on organic layer using chemical vapor deposition.
After the completion of organic film preparation, on the organic layer that the organic film is formed, the side of chemical vapor deposition is used
Method prepares the second inorganic layer, completes the thin-film package of display panel.
Film encapsulation method used by the present embodiment when organic layer among preparation, uses InkJet printing processes will
Ink jet printing with electromagnetic response particle applies an electromagnetic field for being directed toward the first inorganic layer later, makes on the first organic layer
The levelling process time for obtaining organic layer shortens, to reduce InkJet printing processes often, also implies that entire thin-film package
The reduction of technique often, increases the preparation efficiency of entire display panel.
The organic film that one embodiment of the invention provides, which can be by above-mentioned InkJet printing processes system
Standby, used ink is as above-mentioned with electromagnetic response particle, due to the composition of the ink with electromagnetic response particle, system
It is standby, and how to increase levelling speed of electromagnetic response film etc. using electromagnetic response ink and electromagnetic field all aforementioned
Specific description is carried out, details are not described herein.
It is appreciated that the organic film in the present embodiment with electromagnetic response example be ink through the invention with
And method prepares, by the cooperation of this special inks and electromagnetic field, the efficiency of InkJet printing processes can be enhanced,
And the organic film prepared by this efficient InkJet printing processes also should be within the scope of the present invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, made any modification, equivalent replacement etc. be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of ink, which is characterized in that including electromagnetic response particle, the adding proportion of the electromagnetic response particle is every cube
2 to 20 electromagnetic response particles are added in the micron ink.
2. ink according to claim 1, which is characterized in that the electromagnetic response particle is selected from ferroso-ferric oxide, three oxygen
Change two iron, one or their any combination in titanium dioxide.
3. ink according to claim 1, which is characterized in that the diameter of the electromagnetic response particle is 80 nanometers to 300
Nanometer, preferably 100 nanometers to 150 nanometers.
4. a kind of inkjet printing methods characterized by comprising
2 to 20 electromagnetic response particles are added, in every cu μ m ink to form electromagnetic response ink；
Inkjet printing is carried out using the electromagnetic response ink, to form electromagnetic response film；
The electromagnetic field of substrate is directed toward in setting one on the electromagnetic response film, to increase the levelling speed of the electromagnetic response film
Degree.
5. inkjet printing methods according to claim 4, which is characterized in that the formation electromagnetic response ink includes:
The electromagnetic response particle is added into ink under isolation water oxygen and the atmosphere of illumination.
6. inkjet printing methods according to claim 4, which is characterized in that the magnetic field line of the electromagnetic field is each perpendicular to institute
State substrate.
7. inkjet printing methods according to claim 4, which is characterized in that from the substrate edges into the substrate
The heart, the magnetic field line of the electromagnetic field and the value of the angle of the substrate are gradually increased, wherein in the magnetic field line of the substrate edges
Angular range with the substrate is preferably 60 degree to 70 degree not less than 45 degree and less than 90 degree.
8. the electric field strength range of inkjet printing methods according to any one of claims 4 to 7, the electromagnetic field is
200V/cm to 500V/cm, magnetic flux range are 200 Gausses to 500 Gausses.
9. a kind of film encapsulation method, comprising:
The first inorganic layer is prepared using chemical vapor deposition；
Organic layer is prepared on first inorganic layer；
The second inorganic layer is prepared on the organic layer using chemical vapor deposition；
It is used as described in any one of claim 5 to 12 it is characterized in that, preparing organic layer on first inorganic layer
Inkjet printing methods.
10. a kind of organic film, the thin-film package for display screen, which is characterized in that the organic film passes through claim 1
Ink printed described in any one of~3 is formed.
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| CN112909202A (en) * | 2021-01-25 | 2021-06-04 | 绵阳京东方光电科技有限公司 | Display panel, preparation method thereof and display device |
| CN113682064A (en) * | 2021-08-05 | 2021-11-23 | 武汉华星光电半导体显示技术有限公司 | Display device packaging method |
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| CN109880440B (en) | 2022-04-26 |
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