CN206938230U - A kind of magnetic control transfers seal - Google Patents

Abstract

The utility model discloses a kind of magnetic control to transfer seal, is that array of cavities is made in high polymer seal main body, fills magnetic material, is encapsulated with seal counterdie make magnetic control seal afterwards.When dipping in ink, regulate and control without external magnetic field, seal counterdie is smooth, and contact area is big between seal and ink, and adhesion is strong, peels off from alms giver's substrate ink by strong adhesion.When printing, magnetic fields are introduced, stress either magnetostriction materials deform in magnetic field and extrude seal counterdie in magnetic field using magnetic-particle, and counterdie deformation ejects ink, promotes ink and seal unsticking and ink is printed onto on receptor substrate.Compared to other method, the utility model has concurrently simple in construction, easy to make, and cost is cheap；Controllability is good and response is fast；Normal temperature is driven, and ink and receptor substrate are not damaged completely；It is obvious to adhere to regulating effect, is not limited by receptor substrate；And the advantages of selective, untouchable.

Description

A kind of magnetic control transfers seal

Technical field

It the utility model is related to a kind of trans-printing technology, more particularly to a kind of magnetic control trans-printing technology, including magnetic control Seal and printing transferring method are transferred, the certainty available for micro-nano structure assembles.

Background technology

Trans-printing technology, it is a kind of two-dimentional or 3 d function module one kind that micro-nano material is integrated into spacial ordering Technology, transfer technique can apply to the preparation of some heterogeneous uneven high-performance integrated functionality sexual systems, such as flexible electronic Device, three-dimensional or curved optic, the detection of biocompatibility and measuring apparatus.This technology effectively can will not Same species, independently prepared discrete devices carry out large-scale integrated, and then form the function system of spacial ordering.It can transfer material Expect that scope is very wide, from complicated molecule material, as self assembly monolayer material (self-assembled monolayers, SAMs), functional high molecule material, DNA, photoresist etc., to high-performance rigid material, such as inorganic monocrystalline silicon semiconductor, metal material Material, sull etc., and fully-integrated equipment such as thin film transistor (TFT) (thin film transistors, TFTs), hair Optical diode (light emitting diodes, LEDs), cmos circuit, sensor array, solar cell etc. can be used Transfer technique is assembled.The material of these function systems and device is more and more various, and structure becomes increasingly complex, correspondingly, It is required that transfer technique can global and efficient parallel, and can is selectively accurately carried out, and can be applied to more functions The material and structure of device and substrate.

Transfer technique is key technology prepared by inorganic extending flexible electronic device, although extending flexible electronic is because simultaneous Have high electric property and extending, flexible characteristic and have a wide range of applications space and attractive prospect, but it is high due to lacking Controllable, undamaged transfer technique, the batch production of extending flexible electronic device are severely limited.

Trans-printing technology mainly has three kinds at present：Micromechanics operation, wet transfer printing (are also solution self assembly, self- Assembly in fluids), dry method transfer (dry transfer printing, i.e. the transfer skill based on high polymer seal Art).

Although micromechanics operation is accurate, many transferable elements all have the characteristics of thin soft crisp small, it is impossible to use Traditional mechanical means manipulates.Although there is the equipment of micron manipulator can shift some small and crisp elements for some, It is but to sacrifice production efficiency and cost advantage.

Wet transfer printing technology first disperses micro-nano element to form colloid in a solvent, afterwards by capillary force (capillary ) etc. force mechanism completes self assembly in substrate, but composable component shape is restricted, and needs to use excessive Element (10-100 times), this method is at present still in conceptual phase.

Current most commonly used transfer technique is the transfer technique (i.e. dry method transfers) based on high polymer seal, and it is by high Strong adhesion between polymers seal (1) and ink (4) picks up ink (4) from alms giver's substrate (5), is transferred to receptor substrate (6) regulate and control the adhesion of seal (1) and ink (4) after on, ink (4) is printed onto on receptor substrate (6) under weak adhesion.This Kind printing transferring method efficiency high, alignment precision are good, and without using binding agent, chemical corruption will not be caused to ink (4) and receptor substrate (6) Erosion, it is low plus high polymer seal modulus, can with variously-shaped holding bringing into conformal contact, so for ink material and receptor substrate Shape has good adaptability.

Generally, existing dry transfer technique has based on the related transfer technique of rate, the laser transfer based on interface thermal mismatching Technology and surface micro-structure auxiliary transfer technique.But these transfer techniques are each to have the limitation of itself by oneself, otherwise controllability is not It is good, otherwise adhesion regulating effect unobvious, narrow application range, either fire damage can be brought, or selective turn can not be realized Print.

First, seal viscous-elastic behaviour is utilized based on the related transfer technique of rate, high-speed picking-up, low speed printing, has and asks as follows Topic：The transfer of the overall situation can only be realized, can not optionally accurate transfer；And its transferable material ranges is limited, for strong Adhesion Interface can not realize printing, can not be picked up for weak Adhesion Interface；Moreover, low speed printing limits transfer speed.

Second, based on the laser transfer technology of interface thermal mismatching because driving needs to use laser to seal/ink interface Heating, can cause to damage to the performance of ink.

3rd, surface micro-structure auxiliary transfer technique has shearing enhancing transfer (load enhanced transfer Printing) and omphalos auxiliary in surface transfers (surface-relief assisted transfer printing).

4th, although shearing enhancing transfer technique adhesion is controllable, but global transfer can only be realized, can not be selected The accurate transfer of selecting property.

5th, although notable by the surface omphalos transfer adhesion regulating effect of micro- cone elastic force driving, micro- cone Process of upspringing is uncontrollable, although introducing thermo-responsive shape-memory polymer below, opening for adhesion is realized with temperature-driven It is (strong) to close (weak) control, optionally accurate transfer can also be realized during using laser heat driven, but introduce heat waste again The problem of hindering.

Utility model content

To solve the above problems, the purpose of this utility model is to propose a kind of magnetic control transfer seal and its corresponding transfer Method, the certainty for micro-nano structure assemble.Magnetic control seal makes array of cavities on high polymer, forms seal main body, fills out Encapsulated after filling magnetic material with polymer film.Magnetic control transfer technique scheme is made to dip in ink under no magnetic fields in magnetic field With lower printing.

Moreover, the purpose of this utility model is to provide one kind under magnetic fields, magnetic material stress or deformation are squeezed High polymer seal counterdie is pressed, high controllable, fast-response the efficient transfer technique that ink is ejected.

Moreover, the purpose of this utility model is that provide one kind is driven at normal temperatures by magnetic field, will not give ink and base Tail band carrys out the magnetic control transfer technique of fire damage.

Moreover, the purpose of this utility model is to provide a kind of field drives that can both use the overall situation, large area is carried out The transfer of efficient parallel, can also be by applying local magnetic fields, and optionally accurate transfer, is programmed on receptor substrate Property printed patterns, or by the overall situation with selectively transferring the magnetic control transfer technique combined.

Moreover, the purpose of this utility model is that providing a kind of formula that both may make contact prints, and can also carry out non-connect Touch print, but no matter contact or it is contactless ink pulling-off force can be reduced to zero, not by ink and acceptor's base The magnetic control transfer technique of bottom material limitation.

Moreover, the purpose of this utility model is to provide a kind of off-contact printing, suitable for the magnetic control of three-dimension curved surface transfer Transfer technique.

Magnetic control transfer printing machine of the present utility model is realized using magnetic control transfer seal, described magnetic control transfer seal Including seal main body, magnetic material and seal counterdie.Seal main body has the high polymer of array of cavities, same material to make In the cavities, surface is encapsulated with seal counterdie, ink is dipped under no magnetic fields using magnetic control transfer seal, by ink from alms giver Stripped down in substrate, under magnetic fields, magnetic material stress or deformable squeeze seal counterdie, make seal counterdie deformation from And ink is ejected and is printed on receptor substrate.Seal material of main part described in the utility model and seal base film material use Low modulus high polymer, its modulus are usually less than 20MPa, and its low modulus characteristic can ensure that seal can keep conformal with substrate and connect Touch, can better adapt to apply/receptor substrate surface configuration.Preferably, seal counterdie can use can produce foot with ink The material of enough adhesions.Such as when silicon chip pattern is transferred, PDMS (dimethiconol) can be selected either The silica gel materials such as Ecoflex.

Magnetic material described in the utility model can select ferrimagnet, magnetic fluid either magnetostriction materials.

When magnetic material described in the utility model selects ferrimagnet or magnetic fluid, it is necessary to using gradient magnetic, Seal counterdie is extruded by magneticaction after magnetizing by them in gradient magnetic, forms microprotrusion structure to regulate and control interface Adhesion.

When magnetic material described in the utility model selects magnetostriction materials, it is not necessary to it is required that gradient magnetic, dependence are Magnetostriction materials are deformed in magnetic field to extrude seal counterdie, form microprotrusion structure to regulate and control Interface Adhesion.

When magnetic material described in the utility model selects magnetostriction materials, it may not be necessary to seal counterdie.

Cavity in seal main body described in the utility model, its horizontal minimum dimension need and ink transverse direction minimum dimension phase Matching.Preferably, cavity transverse direction minimum dimension should be with the same magnitude or smaller of ink transverse direction minimum dimension.

Seal counterdie described in the utility model, its thickness should be less than the 1/5 of cavity transverse direction minimum dimension, so that counterdie becomes Shape is more prone to.

Printing transferring method described in the utility model, under no magnetic fields, seal counterdie is smooth, with the oil on receptor substrate After black fully contact, ink is picked up from receptor substrate by its strong adhesion.

Printing transferring method described in the utility model, the seal with ink is transferred at receptor substrate, applies extraneous magnetic , under magnetic fields, magnetic material stress or deformation, seal counterdie is extruded, ink is ejected and is printed onto on receptor substrate.

Printing transferring method described in the utility model, using magnetostriction materials, without counterdie magnetic control seal when, cavity is horizontal The horizontal minimum dimension of ink should be less than to minimum dimension.

Printing transferring method described in the utility model, using magnetostriction materials, without counterdie magnetic control seal when, do not having Under magnetic fields, adhesion is provided by seal main body to complete to pick up；Seal by printing ink transfer at receptor substrate after, according to Deformed by magnetostriction materials in magnetic field and complete printing to eject ink.

Magnetic control transfer seal and magnetic control transfer printing machine of the present utility model overcome the crowd of other existing printing transferring methods More shortcomings, conventional printing transferring method and transfer seal, otherwise it is complicated, trouble is made, cost is high；Controllability is bad； Fire damage can be brought；It is not notable to adhere to regulating effect, restricted application；Selective turn can not be realized Print.And seal of the present utility model is controlled using magnetic field, for this method with simple in construction, easy to make, cost is cheap；It is controllable Property good and response it is fast；Normal temperature is driven, and ink and receptor substrate are not damaged completely；It is obvious to adhere to regulating effect, not by acceptor Substrate limits；And the advantages of selective, untouchable.In addition, can be by different materials by the way that above-mentioned transfer process is repeated several times Material, the ink of different structure are assembled into same substrate.

Brief description of the drawings

Fig. 1 is the magnetic control seal structure schematic diagram proposed in the utility model.

Fig. 2 be proposed in the utility model have magnetic control printing transferring method corresponding to the magnetic control seal of seal counterdie and work former Reason figure.

Fig. 3 is that magnetic control printing transferring method corresponding to the magnetic control seal without seal counterdie proposed in the utility model and work are former Reason figure.

Fig. 4 is the schematic diagram of the embodiment 1- overall situations contact transfer of the printing transferring method proposed in the utility model.

Fig. 5 is the schematic diagram of the global contactless transfers of embodiment 2- of the printing transferring method proposed in the utility model.

Fig. 6 is the schematic diagram of the embodiment 3- selective exposures formula transfer of the printing transferring method proposed in the utility model.

Fig. 7 is the signal of the selectively contactless transfers of embodiment 4- of the printing transferring method proposed in the utility model Figure.

Fig. 8 is different peeling rates and the drawing under magnetic field intensity that seal sample schematic diagram pulls open that experiment measurement obtains from it Opening force test result displaying figure.

In figure:1- seal main body 2- magnetic material 3- seal counterdie 4- ink 5- alms giver's substrate 6- receptor substrates.

Embodiment

Content of the present utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 a are the magnetic control seal structure schematic diagram for having seal counterdie.Magnetic control seal main body (1) material is that low modulus is high poly- Thing, being made in seal main body has array of cavities, after filling magnetic material (2) in the cavities, is encapsulated with polymer film (3) Making turns into magnetic control seal.

Fig. 1 b are the seal structure schematic diagrames of no seal counterdie when using magnetostriction materials.Magnetic control seal main body (1) material Expect for low modulus high polymer, being made in seal main body has array of cavities, there is magnetostriction materials microtrabeculae, microtrabeculae bottom in the cavities Face is retracted 0.1-25um compared to seal body floor.

Fig. 2 be proposed in the utility model have magnetic control printing transferring method corresponding to the magnetic control seal of seal counterdie and work former Reason figure.(a) seal dips in ink under no magnetic fields, and (b) prints under magnetic fields.

When not having magnetic fields, seal counterdie is smooth, and big with ink contact area, adhesion is strong, can by strong adhesion So that ink is stripped down from alms giver's substrate.

Seal by printing ink transfer at receptor substrate, introduce magnetic fields, using magnetic material in magnetic field stress or Deformation, ink is ejected and is printed onto on receptor substrate.

Fig. 3 is that magnetic control printing transferring method corresponding to the magnetic control seal without seal counterdie proposed in the utility model and work are former Reason figure.(a) seal dips in ink under no magnetic fields, and (b) prints under magnetic fields.

When not having magnetic fields, ink contacts with seal bottom part body, by the adhesion of seal main body and ink oil Ink strips down from alms giver's substrate.

Printing ink transfer at receptor substrate, is introduced magnetic fields, deformed using magnetostriction microtrabeculae in magnetic field by seal, Ink is ejected, with being printed onto after seal main body unsticking on receptor substrate.

As an example, but the scope of the utility model is not intended to limit, Fig. 4 is the printing transferring method proposed in the utility model The embodiment 1- overall situations contact transfer schematic diagram.

Global contact transfer flow is as follows：Seal is first close to alms giver's substrate (Fig. 4 a), with alms giver's substrate and ink contact (Fig. 4 b), quickly lift seal afterwards, peel off from alms giver's substrate ink by the strong adhesion between seal and ink (Fig. 4 c), the seal with ink is contacted into (Fig. 4 d) with receptor substrate afterwards, lifted seal under the magnetic fields of the overall situation Until seal and the complete unsticking (Fig. 4 e) of ink, seal is finally withdrawn, ink is all transferred on receptor substrate.

As an example, but the scope of the utility model is not intended to limit, Fig. 5 is the printing transferring method proposed in the utility model The global contactless transfers of embodiment 2- schematic diagram.

Global contactless transfer flow is as follows：Seal first close to alms giver's substrate (Fig. 5 a), connects with alms giver's substrate and ink Touch (Fig. 5 b), quickly lift seal afterwards, peel off from alms giver's substrate ink by the strong adhesion between seal and ink (Fig. 5 c), the seal with ink is transferred to a certain distance above acceptor afterwards and is aligned (Fig. 5 d) with receptor substrate, Under global magnetic fields, ink ejection is printed on receptor substrate (Fig. 5 e) by the deformation of seal counterdie, finally withdraws seal, will Ink is all transferred on receptor substrate.

As an example, but the scope of the utility model is not intended to limit, Fig. 6 is the printing transferring method proposed in the utility model Embodiment 3- selective exposures formula transfer schematic diagram.

Selective exposure formula transfer flow is as follows：Seal first close to alms giver's substrate (Fig. 6 a), connects with alms giver's substrate and ink Touch (Fig. 6 b), quickly lift seal afterwards, peel off from alms giver's substrate ink by the strong adhesion between seal and ink (Fig. 6 c), the seal with ink is contacted into (Fig. 6 d) with receptor substrate afterwards, apply part needing the region of printing-ink Magnetic fields, while seal is lifted until seal and the complete unsticking (Fig. 6 e) of the ink to be transferred, seal is finally withdrawn, need to The ink to be transferred is printed onto on receptor substrate.

As an example, but the scope of the utility model is not intended to limit, Fig. 7 is the printing transferring method proposed in the utility model The selectively contactless transfers of embodiment 4- schematic diagram.

The contactless transfer flow of selectivity is as follows：Seal is first close to alms giver's substrate (Fig. 7 a), with alms giver's substrate and ink Contact (Fig. 7 b), quickly lift seal afterwards, shell from alms giver's substrate ink by the strong adhesion between seal and ink From (Fig. 7 c), the seal with ink is transferred to a certain distance above acceptor afterwards and is aligned (Fig. 7 d) with receptor substrate, Needing printing-ink region to apply local magnetic field effect, make the seal counterdie deformation of this subregion by ink ejection be printed on by In main substrate (Fig. 7 e), seal is finally withdrawn, it would be desirable to which the ink of transfer is printed onto on receptor substrate.

Global transfer mode is easy to transfer efficient parallel, and selectivity transfer can accurately control ink on receptor substrate Distribution.Both can be combined with each other.

In contactless transfer, seal does not contact with receptor substrate, so having for the shape and material of receptor substrate More preferable adaptability, it is especially suitable for the transfer of three-dimensional either curved surface.

For (a) seal sample schematic diagram and (b), it pulls open different peeling rates and the magnetic field intensity that experiment measurement obtains to Fig. 8 Under pulling-off force test result displaying figure.

In seal sample (Fig. 8 a), seal main body (50mm × 50mm × 6mm, cavity diameter 40mm) uses PDMS materials (DOW CORNING 183,10:1,65 DEG C of 3h solidification), magnetic material selects 500um straight iron powders (Fe>99.999%), seal counterdie is same Use PDMS (DOW CORNINGs 183,10:1,65 DEG C of 3h solidification, thickness 1.6mm), the magnetic control seal of a unit has been made here.With Square ferro-aluminum boron permanent magnet (50mm × 50mm × 25mm) provides driving magnetic field, has carried out pulling open experiment.

Fig. 8 b give pulling-off force with peeling rate and the curve of seal-magnet spacing change.Pulling-off force is with stripping The increase of speed and increase, reduce with the reduction with the distance of magnet.In any case, magnetic field regulation and control will can be pulled open Power is reduced to zero, shows the significant effect of magnetic field regulation and control adhesion.

The effect of the utility model adhesion regulation and control：When not having magnetic fields, seal adheres to sheet glass, the glass after 120h Glass piece is still adhered on seal.After introducing magnetic fields, the deformation of seal counterdie, substrate of glass is arrived into sheet glass ejection in 2s On.Seal is withdrawn with 10mm/s speed afterwards, sheet glass is still kept on the glass substrate.

Claims (6)

1. a kind of magnetic control transfers seal, it is characterised in that is printed including high polymer seal main body (1), magnetic material (2) and high polymer Chapter counterdie (3), array of cavities is offered in seal main body, magnetic material (2) is filled in the cavities, surface seal counterdie (3) encapsulate.

2. magnetic control according to claim 1 transfers seal, it is characterised in that the cavity battle array in described seal main body (1) The horizontal minimum dimension of ink (4) of the horizontal minimum dimension of each cavity with that need to transfer is same magnitude or smaller in row.

3. magnetic control according to claim 1 transfers seal, it is characterised in that the magnetic filled in seal main body (1) cavity Property material (2), is ferrimagnet, magnetic fluid or magnetostriction materials.

4. magnetic control according to claim 1 transfers seal, it is characterised in that described seal counterdie (3) uses high polymer Film, its thickness are less than the 1/5 of the horizontal minimum dimension of the cavity in seal main body.

5. a kind of magnetic control transfers seal, it is characterised in that including high polymer seal main body (1) and magnetic material (2), in seal Array of cavities is offered in main body, magnetic material (2) is filled in the cavities, and described magnetic material is magnetostriction materials.

6. magnetic control according to claim 5 transfers seal, it is characterised in that the cavity battle array in described seal main body (1) The horizontal minimum dimension of each cavity is less than the horizontal minimum dimension for the ink that need to be transferred in row.