WO2009122660A1 - 2種類の物質を基板の表面に選択的に配置する方法 - Google Patents
2種類の物質を基板の表面に選択的に配置する方法 Download PDFInfo
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- WO2009122660A1 WO2009122660A1 PCT/JP2009/001179 JP2009001179W WO2009122660A1 WO 2009122660 A1 WO2009122660 A1 WO 2009122660A1 JP 2009001179 W JP2009001179 W JP 2009001179W WO 2009122660 A1 WO2009122660 A1 WO 2009122660A1
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- substrate
- region
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1208—Pretreatment of the circuit board, e.g. modifying wetting properties; Patterning by using affinity patterns
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/011—Manufacture or treatment of image sensors covered by group H10F39/12
- H10F39/024—Manufacture or treatment of image sensors covered by group H10F39/12 of coatings or optical elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1173—Differences in wettability, e.g. hydrophilic or hydrophobic areas
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- H10P14/46—
Definitions
- the present invention relates to a method for selectively arranging two kinds of substances on the surface of a substrate.
- the size of the thin film transistor, the light emitting element or the microlens is generally several tens to 100 ⁇ m
- a printing machine capable of forming a pattern with a size of several tens to 100 ⁇ m is required in order to form the thin film by a printing method.
- printing machines using the ink jet method and the gravure offset method can form a pattern of about several tens of ⁇ m at the minimum, and a method for producing an electronic device using these has been reported.
- Japanese Patent No. 3541625 (Reference 1) and Japanese Patent No. 3858809 (Reference 2) disclose a method for manufacturing a light-emitting element of an organic electroluminescence display by an ink-jet printing method.
- Japanese Patent Laying-Open No. 2006-318850 (Document 3) discloses a method for manufacturing a light-emitting element of an organic electroluminescence display by a gravure offset printing method.
- a hydrophilic region surrounded by a water-repellent region is formed in advance on the substrate, and ink is selectively applied to the hydrophilic region by applying ink to the substrate by a spin coating method, a dip method, or a brush.
- the printing method to arrange has been proposed.
- this method is referred to as a dewetting method.
- the dewetting method has been attracting attention as a method for manufacturing electronic devices.
- the principle of the dewetting method will be briefly described below, and a conventional example using this will be shown.
- the basic steps of the dewetting method are a step of bringing the ink into contact with the substrate, and a step of separating the ink from the substrate thereafter.
- FIGS. 10A to 10E are schematic cross-sectional views showing how ink is arranged in the hydrophilic region in this basic process.
- FIG. 10A is a schematic cross-sectional view showing the movement of a droplet of ink 122 that has contacted the substrate 121 in the atmosphere 130.
- the droplets of the ink 122 move in the direction of the arrow 123, and the contact and separation of the ink 122 are performed on the surface of the substrate 121 accordingly.
- the common interface 128 where the three interfaces of the ink 122, the substrate 121, and the atmosphere 130 come in contact moves in the direction of the arrow 123.
- FIG. 10B to 10E are enlarged views of the vicinity 124 (see FIG. 10A) of the common interface 128.
- FIG. 10B shows the initial movement of the ink 122, and the common interface 128 at this time exists on the water-repellent region 125. Thereafter, as shown in FIG. 10C, the common interface 128 moves on the water-repellent region 125 as the ink 122 moves, and moves to the boundary between the hydrophilic region 126 and the water-repellent region 125.
- the common interface 128 on the water-repellent region 125 moves as the ink 122 moves, whereas the hydrophilic region 126 and the water-repellent region 125 move as shown in FIG. 10D.
- the reason why the common interface 128 on the boundary between the ink 122 and the water-repellent region 125 remains smaller is that the adhesive force that acts between the ink 122 and the hydrophilic region 126 is smaller. Guessed.
- the adhesive force between the liquid (ink in the above example) and the water-repellent region is smaller than the adhesive force between the liquid and the hydrophilic region” means the unit area. This means that the work required to separate the liquid adhering to the water-repellent region is smaller than the work necessary to separate the liquid adhering to the hydrophilic area of the unit area.
- the common interface 128 moves to the adjacent hydrophilic region 129 simultaneously with the cutting of the ink 122 on the hydrophilic region 126. There is also.
- the ink contacts and separates from the substrate by moving ink droplets on the substrate.
- Such ink contact and separation can also be performed by a spin coating method, a dip method, or a brush method.
- the spin coating method is a method in which ink is dropped on the entire surface of the substrate and then the substrate is rotated at a high speed to apply the ink to the substrate.
- the ink and the substrate come into contact with each other when the ink is dropped, and the ink is separated from the substrate by the centrifugal force generated by the rotation of the substrate.
- the dipping method is a method of applying ink to a substrate by immersing the substrate in ink and then pulling it up from the ink.
- the ink contacts the substrate by dipping the substrate, and the ink is separated from the substrate by pulling up the substrate.
- the brush method is a method of applying ink to a substrate by moving a brush containing ink on the substrate.
- the ink is brought into contact with and separated from the substrate by the movement of the brush.
- JP 2007-129227 A reference 4
- “SPLi et.al; Applied Physics Letters; 2006, 89, P122105-1 to 3” reference 5
- a method for producing an effect transistor is disclosed. In this method, first, a hydrophilic region corresponding to the shape of a source electrode and a drain electrode and a water-repellent region surrounding it are formed on the surface of a conductive silicon substrate whose surface is covered with a thermal silicon oxide film having a thickness of 100 nm. To do.
- the hydrophilic region and the water repellent region are produced as follows.
- a relief printing plate is produced with a polydimethylsiloxane (PDMS) material and the shape of the recesses matches the shape of the source and drain electrodes.
- PDMS polydimethylsiloxane
- the ink in which the conductive polymer material is dissolved is applied to the substrate by the brush method, and the conductive polymer is disposed only in the hydrophilic region.
- This conductive polymer pattern becomes a source electrode and a drain electrode.
- a method for printing on a flexible substrate by a method between continuous rolls using a dewetting method is disclosed.
- a fluororesin pattern is formed on the surface of a polyethylene terephthalate resin undercoated with gelatin by a flexographic printing method, and then an aqueous glycerol, conductive polymer, liquid crystal, etc. is printed on the hydrophilic region by a hand coating method. is doing.
- the resin is cured by irradiating ultraviolet rays.
- a microlens having a diameter of 50 ⁇ m is manufactured in the hydrophilic region.
- the coating apparatus used in the dewetting method is simpler and cheaper than inkjet printers and gravure offset printers, so there is a possibility that electronic devices can be manufactured at a lower price.
- the hydrophilic region can be reduced to 1 ⁇ m or less by a plate using PDMS or a photolithography method, so that a pattern of 1 ⁇ m or less can be printed.
- the dewetting method is attracting attention in the sense that a fine pattern may be printed at a low price.
- the dewetting method uses two types of regions, a water-repellent region and a hydrophilic region formed on the substrate, and uses the difference in adhesive force acting between each region and the ink. This is because they are arranged.
- An object of the present invention is to provide a method for selectively arranging two kinds of substances on the same substrate by a dewetting method.
- the present inventor has come up with a method for selectively arranging two kinds of substances on a substrate by a dewetting method.
- a first method of the present invention is a method of selectively disposing a first substance having a hydrophilic surface and a second substance having a surface covered with a hydrocarbon group on a surface of a substrate,
- the substrate has a first region, a second region, and a third region on the surface, the first region is hydrophilic, and the second region is covered with a hydrocarbon group.
- the third region is covered with a fluorocarbon group.
- the first method of the present invention includes the following steps: (1) applying a solution containing the first substance and a water-soluble solvent to the substrate; (2) disposing the first substance on the surface of the first region by removing the water-soluble solvent from the surface of the substrate; (3) a step of immersing the substrate in a liquid containing an alcohol having fluorine in the molecule; (4) A step of applying a solution containing the second substance and an organic solvent to the surface of the substrate while immersing the substrate in the liquid. (5) a step of taking out the substrate from the liquid; and (6) a step of disposing the second substance on the surface of the second region by removing the organic solvent from the surface of the substrate.
- a second method of the present invention is a method of selectively disposing a first substance having a hydrophilic surface and a second substance having a surface covered with a hydrocarbon group on a surface of a substrate,
- the substrate has a first region, a second region, and a third region on the surface, the first region is hydrophilic, and the second region is covered with a hydrocarbon group.
- the third region is covered with a fluorocarbon group.
- the second method of the present invention includes the following steps: (1) a step of immersing the substrate in a liquid containing an alcohol having fluorine in the molecule; (2) A step of applying a solution containing the second substance and an organic solvent to the surface of the substrate while immersing the substrate in the liquid.
- the first and second methods of the present invention since two kinds of substances can be selectively arranged on the surface of the substrate by the dewetting method, even a large area substrate is formed by the two kinds of substances. It is possible to form a fine pattern at a low cost.
- FIGS. 1A to 1H are schematic views showing an embodiment of a method for arranging two kinds of substances on a substrate according to the present invention.
- 2A to 2G are schematic cross-sectional views showing an embodiment of a method for arranging two kinds of substances on a substrate according to the present invention.
- 3A to 3E are schematic cross-sectional views showing an example of a method for manufacturing a substrate having the first, second, and third regions on the surface thereof in the present invention.
- FIG. 4 is a schematic view of a monomolecular film having a hydrocarbon group.
- FIG. 5 is a schematic diagram of a monomolecular film having a fluorocarbon group.
- FIG. 6A to 6C are schematic views showing how two kinds of substances are arranged on a substrate in a reference example of a method for arranging two kinds of substances on a substrate according to the present invention.
- FIG. 7A is a schematic plan view of the substrate before applying the solution
- FIG. 7B is a micrograph of the substrate surface after applying and drying a solution containing silicon particles and a water-soluble solvent.
- 7C is a photomicrograph of the substrate surface after applying a solution containing silicon particles and 1-propyl alcohol and then drying n-hexadecane in 2,2,2-trifluoroethanol (2, 7D is a micrograph taken with the substrate immersed in 2,2-trifluoroethanol), and
- FIG. 7A is a schematic plan view of the substrate before applying the solution
- FIG. 7B is a micrograph of the substrate surface after applying and drying a solution containing silicon particles and a water-soluble solvent.
- 7C is a photomicrograph of the substrate surface after applying a solution containing silicon particles and
- FIG. 7D shows a state in which the solution containing silicon particles and 1-propyl alcohol was applied and dried, and then in the atmosphere.
- 4 is a micrograph of the substrate surface after n-hexadecane was applied.
- FIG. 8 a solution in which silicon particles are dispersed in 1-propyl alcohol is applied and dried, and then n-hexadecane is applied in 2,2,2-trifluoroethanol. It is a microscope picture of the substrate surface after taking out from in fluoroethanol.
- 9A to 9G are schematic cross-sectional views showing an embodiment of a method for arranging two kinds of substances on a substrate according to the present invention.
- 10A to 10E are schematic cross-sectional views showing the principle of the dewetting method.
- FIGS. 1A to 1H and FIGS. 2A to 2G are schematic cross-sectional views corresponding to the schematic views shown in FIGS. 1B to 1H, respectively.
- a substrate 101 for arranging a first substance having a hydrophilic surface and a second substance whose surface is covered with a hydrocarbon group is prepared (FIG. 1A).
- a first region 102, a second region 103, and a third region 104 are provided on the surface of the substrate 101.
- the first region 102 is hydrophilic.
- the second region 103 is covered with a hydrocarbon group.
- the third region 104 is covered with a fluorocarbon group.
- a solution 105 containing a first substance and a water-soluble solvent is applied to the substrate 101.
- a blade method is used, and the solution 105 is applied onto the substrate 101 by moving the blade 106 in one direction 113.
- the water-soluble solution 105 containing the water-soluble solvent is disposed only in the hydrophilic first region 102.
- reference numeral 107 denotes a solution containing the first substance and the water-soluble solvent disposed on the first region 102.
- the water-soluble solvent of the solution 107 disposed on the first region 102 is removed by heating or the like, and as shown in FIGS. 1D and 2C, the first substance 108 contained in the solution 107 is changed to the first It is arranged on the surface of the region 102.
- the substrate 101 is immersed in a liquid 201 that is held in the container 202 and contains an alcohol having fluorine in its molecule (for example, CF 3 CH 2 OH) (see FIG. 2D).
- a solution 110 containing a second substance and an organic solvent is applied to the surface of the substrate 101 immersed in the liquid 201.
- a blade method is used, and the solution 110 is applied onto the substrate 101 by moving the blade 109 in one direction 114.
- the oil-soluble solution 110 containing an organic solvent is disposed only in the second region 103 whose surface is covered with a hydrocarbon group.
- reference numeral 111 denotes a solution containing the second substance and the organic solvent disposed on the second region 103.
- the liquid 201 and the container 202 are omitted for easy understanding of the drawings.
- the substrate 101 is taken out from the liquid 201 (see FIGS. 1G and 2F), and then the organic solvent in the solution 111 disposed on the second region 103 is removed by heating or the like, as shown in FIGS. 1H and 2G.
- the second substance 112 contained in the solution 111 is disposed on the surface of the first region 102.
- a first region 102, a second region 103, and a third region 104 are formed on the surface as shown in FIG. 1A.
- a substrate 101 is prepared.
- the first region 102 is a region where a first substance having a hydrophilic surface is disposed.
- the second region 103 is a region where a second substance whose surface is covered with a hydrocarbon group is arranged.
- the surface of the first region 102 is hydrophilic.
- the surface being hydrophilic means that the static contact angle with respect to pure water on this surface is smaller than 90 degrees.
- the surface of the inorganic oxide that has been cleaned cleanly is hydrophilic.
- glass, ceramics, metal oxide, silicon oxide, silicon nitride oxide, and the like become hydrophilic when the surface is washed cleanly.
- the resin having a polar group on the surface is often hydrophilic.
- the surface of nylon resin is hydrophilic.
- the surface of a resin having no polar group on the surface can be made hydrophilic by chemical treatment or plasma treatment.
- the surface of a polypropylene resin, a polyethylene resin, a polyethylene terephthalate resin, or the like can be made hydrophilic by exposing the surface to oxygen plasma.
- the surface hydrophilic by forming a thin film of hydrophilic material on the surface of the non-hydrophilic substrate.
- a thin film of aluminum oxide can be vacuum-deposited on a silicon substrate to make the surface hydrophilic.
- the second region 103 is covered with a hydrocarbon group (CH 3 (CH 2 ) n —; n is a natural number of 1 to 19). Due to the presence of hydrocarbon groups on the surface, the surface energy of the second region 103 is smaller than that of the first region 102.
- a hydrocarbon group CH 3 (CH 2 ) n —; n is a natural number of 1 to 19. Due to the presence of hydrocarbon groups on the surface, the surface energy of the second region 103 is smaller than that of the first region 102.
- Such a second region 103 can be realized by using the surface of polypropylene resin or polyethylene resin as it is, and can also be realized by applying a resin having a hydrocarbon group to the substrate.
- the second region 103 can also be realized by adsorbing a molecule having a hydrocarbon group to the substrate.
- molecules having a hydrocarbon group are bonded to the substrate in the form of a monomolecular film or a polymer film.
- a well-cleaned glass substrate or silicon oxide substrate is immersed in a solution in which 1 vol% of a silane coupling agent is dissolved for a certain period of time, and then taken out to bond the silane coupling agent to the substrate surface. If the substrate is washed with a solvent after the immersion, the silane coupling agent becomes a monomolecular film, and if not washed, it becomes a polymer film and bonds to the substrate.
- Examples of the silane coupling agent for forming the second region 103 include CH 3 (CH 2 ) n SiX 3 , CH 3 (CH 2 ) n SiCH 3 X 2 , CH 3 (CH 2 ) n Si ( CH 3 ) 2 X or the like is used (n is a natural number of 1 to 19; X is Cl, OCH 3 or OCH 2 CH 3 , and when X is 2 or more, X may not be the same).
- FIG. 4 shows a schematic diagram of a monomolecular film 402 formed by reacting octadecyltrichlorosilane (CH 3 (CH 2 ) 17 SiCl 3 ) as a silane coupling agent with a substrate 401. Show.
- the third region 104 is covered with a fluorocarbon group (CF 3 (CF 2 ) n —; n is a natural number of 0 to 10). Due to the presence of the fluorocarbon group on the surface, the surface energy of the third region 104 is smaller than that of the first region 102.
- a third region 104 can be realized by applying a resin having a fluorocarbon group to the substrate 101 or by reacting a silane coupling agent having a fluorocarbon group with the substrate 101. it can.
- molecules having a fluorocarbon group can be formed on the substrate in the form of a monomolecular film or a polymer film.
- a well-cleaned glass substrate or silicon oxide substrate is immersed in a solution in which 1 vol% of a silane coupling agent is dissolved for a certain period of time, and then taken out to bond the silane coupling agent onto the substrate. If the substrate is washed with a solvent after the immersion, the silane coupling agent becomes a monomolecular film, and if not washed, it becomes a polymer film and binds on the substrate.
- the silane coupling agent for forming the third region 104 include CF 3 (CF 2 ) n (CH 2 ) 2 SiX 3 , CF 3 (CF 2 ) n (CH 2 ) 2 SiCH 3 X 2.
- n is a natural number from 0 to 10; X is Cl, OCH 3 or OCH 2 CH 3 , X is 2 or more) In this case, X may not be the same).
- perfluorooctylethyltrichlorosilane (CF 3 (CF 2 ) 7 (CH 2 ) 2 SiCl 3 ; hereinafter abbreviated as FAS) is used as a silane coupling agent, and this is combined with a substrate 501.
- FOS perfluorooctylethyltrichlorosilane
- a photolithography method As a method for producing the first, second, and third regions on the surface of the same substrate, for example, a photolithography method can be used.
- FIG. 3A to FIG. 3E show an example of a method for manufacturing the first, second, and third regions by the photolithography method.
- a predetermined pattern of a metal film 302 and a positive resist film 303 is formed on a substrate 301 having a hydrophilic surface by using a photolithography method.
- hydrophilic substrate 301 glass, silicon whose surface is covered with an oxide film, ceramics, metal oxide, nylon resin, resin whose surface has been made hydrophilic by oxygen plasma treatment, or the like can be used.
- the type of metal constituting the metal film 302 is not particularly limited, and noble metals such as gold and platinum, aluminum, copper, nickel, and the like can be used.
- silane coupling agent (A) a silane coupling agent having a fluorocarbon group
- a silane coupling agent (A) CF 3 (CF 2 ) n (CH 2 ) 2 SiX 3 , CF 3 (CF 2 ) n (CH 2 ) 2 SiCH 3 X 2 , CF 3 (CF 2 ) n ( CH 2 ) 2 Si (CH 3 ) 2 X and the like
- n is a natural number of 0 to 10
- X is Cl, OCH 3 or OCH 2 CH 3 , and when X is 2 or more, X is not the same. Is good).
- a silane coupling agent (A) in which X is Cl is preferable because it has high reactivity with the substrate 301 and can form a fluorocarbon group on the surface of the substrate 301 at a high density.
- the bonding to the silane coupling agent (A) on the substrate 301 is performed by, for example, immersing in a solution in which 1 vol% of the silane coupling agent (A) is dissolved in a non-aqueous organic solvent for 1 hour or more, This is performed by cleaning the substrate 301 with an organic solvent.
- the non-aqueous organic solvent to be used is preferably one that does not denature the resist film 303, and for example, a fluorine-based solvent such as perfluorooctane is preferable.
- FIG. 3B is a schematic cross-sectional view of the substrate 301 after the substrate 301 is reacted with the silane coupling agent (A). Through this step, molecules having a fluorocarbon group are bonded to the region 304 where the surface of the substrate 301 is exposed, so that a monomolecular film 305 is formed.
- the silane coupling agent (A) is applied to the surface of the metal film 302 and the resist film 303. There are cases where it is bonded to the surface of the film and cases where it is not bonded.
- the metal film 302 is made of gold or platinum, since there is no active hydrogen that reacts with the silane coupling agent on the surface, the silane coupling agent (A) is not bonded.
- the resist film 303 is removed.
- the resist film 303 is a positive resist, it can be dissolved and removed by exposing the surface of the substrate 301 to acetone. As a result, as shown in FIG. 3C, a region 306 where the surface of the substrate 301 is exposed appears in the portion where the resist film 303 has been formed.
- silane coupling agent (B) examples include CH 3 (CH 2 ) nSiX 3 , CH 3 (CH 2 ) n SiCH 3 X 2 , and CH 3 (CH 2 ) n Si (CH 3 ) 2 X.
- N is a natural number of 1 to 19; X is Cl, OCH 3 or OCH 2 CH 3 , and when X is 2 or more, X may not be the same).
- a silane coupling agent (B) in which X is Cl is preferable because it has high reactivity with the substrate 301 and can form a high-density hydrocarbon group on the surface of the substrate 301.
- the bonding of the silane coupling agent (B) to the substrate 301 is performed by, for example, immersing the substrate in a solution in which 1 vol% of the silane coupling agent (B) is dissolved in a non-aqueous organic solvent for 1 hour or more, and then non-aqueous The substrate 301 is washed with the organic solvent.
- a non-aqueous organic solvent for example, chloroform, toluene, hexadecane, or a mixed solution of chloroform and hexadecane can be used.
- molecules having a hydrocarbon group are combined with the region 306 where the surface of the substrate 301 is exposed to form a monomolecular film 307.
- the silane coupling agent (B) does not bond to the region where the monomolecular film 305 having a fluorocarbon group is already formed. This is because the surface of the region where the monomolecular film 305 is formed is covered with a fluorocarbon group and there is no active hydrogen with which the silane coupling agent (B) reacts.
- the etching solution used at this time is preferably acidic. Since the silane coupling agent (B) bonded to the surface of the substrate 301 is resistant to an acidic solution, the monomolecular film 305 and the monomolecular film 307 are etched in the etching process of the metal film 302 using an acidic etching solution. Is not removed from the substrate 301.
- the silane coupling agent (B) When the silane coupling agent (B) is bonded to the surface of the metal film 302 with a high density, the silane coupling agent (B) acts as a resist film on the etching solution. In this case, the etching time becomes longer than in the case of the metal film 302 to which the silane coupling agent (B) is not bonded.
- the silane coupling agent (B) hardly binds to the surface of the metal film 302, so that the etching time is shorter than that of a metal to which the silane coupling agent (B) is easily bonded.
- a hydrophilic region 308 where the surface of the substrate 301 is exposed, a region where a monomolecular film 307 having a hydrocarbon group is provided, The region provided with the monomolecular film 309 having a carbon group is manufactured. Therefore, the hydrophilic region 308 is the first region, the region of the monomolecular film 307 having a hydrocarbon group is the second region, and the region of the monomolecular film 309 having a fluorocarbon group is the third region.
- the first region is the surface of the substrate, but it is also possible to manufacture a substrate having the first to third regions such that the second region is the surface of the substrate. is there.
- a predetermined region in the substrate becomes a hydrophilic region.
- the metal mask pattern is such that the region of the substrate not exposed to plasma corresponds to the second region.
- the substrate having the first to third regions can be produced by reacting the substrate with a silane coupling agent having a fluorocarbon group and then removing the resist pattern.
- a predetermined region in the substrate is made a hydrophilic region.
- the metal mask pattern is such that the area of the substrate not exposed to the laser corresponds to the third area.
- this resin has a fluorocarbon group on the surface, the region not exposed to the laser is the third region.
- the substrate having the first to third regions can be produced by reacting the substrate with a silane coupling agent having a hydrocarbon group and then removing the resist pattern.
- the substrate having the first to third regions can also be produced by a method using a PDMS plate.
- a first PDMS relief plate (first relief plate) having the same size as the surface of the substrate on which the first substance and the second substance are disposed is prepared.
- the position and shape of the convex portion in the first relief plate are set to be equal to the position and shape of the second region on the surface of the substrate.
- the plate After impregnating the surface of the first relief plate with a silane coupling agent having a hydrocarbon group, the plate is brought into contact with a substrate having a hydrophilic surface, whereby the substrate has a silane cup having a hydrocarbon group.
- region is formed.
- a second PDMS letterpress (second letterpress) having the same size as the surface of the substrate is prepared.
- the position and shape of the concave portion in the second relief printing plate are set to be equal to the position and shape of the first region on the surface of the substrate.
- this plate After impregnating the surface of the second relief plate with a silane coupling agent having a fluorocarbon group, this plate is brought into contact with the substrate.
- the positional relationship between the second relief plate and the substrate is determined so that the concave portion of the second relief plate is positioned at the first region in the substrate.
- the first to third regions can be formed on the substrate.
- the water-soluble solvent in the present invention refers to a liquid containing water.
- the water-soluble solvent is preferably a liquid containing 40 vol% or more of water. More preferably, the water-soluble solvent is water, that is, the solution (A) is an aqueous solution of the first substance.
- the static contact angle in the first region of the water-soluble solvent is preferably smaller than 90 degrees.
- the static contact angle in the second or third region of the water-soluble solvent is preferably 90 degrees or more.
- Examples of such a water-soluble solvent include water containing 10 vol% or less of alcohol such as propyl alcohol and butyl alcohol, or pure water.
- particles of inorganic material or resin material having a hydrophilic surface can be used.
- the shape and size of the particles are not particularly limited, but preferably the maximum side or maximum diameter is 1 nm or more and 100 ⁇ m or less.
- the surface of the first substance is hydrophilic, it can be dispersed in a water-soluble solvent.
- the surface of the first substance is hydrophilic means that a solution in which the first substance is dispersed in a water-soluble solvent is applied onto a smooth substrate, and the water-soluble solvent is volatilized and removed.
- the static contact angle with respect to pure water on the film surface is 90 degrees or less.
- Examples of the inorganic material particles used as the first substance include semiconductor particles such as silicon, germanium, titanium oxide and indium oxide, insulator particles such as silicon oxide and silicon nitride, metal particles such as gold, silver and copper. is there.
- Examples of the particles of the resin material used as the first substance include particles made of polystyrene, nylon resin, and the like.
- the particle surface When the particle surface is not hydrophilic, it can be rendered hydrophilic by exposing the particle surface to oxygen plasma or ozone gas or chemically treating it.
- Solution (A) can be prepared by adding the first substance to a water-soluble solvent and stirring, or by applying ultrasonic waves.
- a solution containing the second substance and the organic solvent in which the second substance is dispersed in the organic solvent (corresponding to the solution 110 shown in FIGS. 1E, 1F, 2D, and 2E.
- a solution (B) may be prepared).
- the organic solvent in the present invention refers to a liquid having a hydrocarbon group having a solubility in water (weight dissolved in 100 g of water) of 10 g or less. These liquids include alkanes having 6 to 16 carbon atoms, cyclohexane, turpentine oil and the like.
- inorganic material particles or resin material particles whose surfaces are coated with hydrocarbon groups can be used as the second substance in the present invention.
- the shape and size of the particles are not particularly limited, but the maximum side or maximum diameter is preferably 1 nm or more and 100 ⁇ m or less.
- the second substance Since the second substance has a hydrocarbon group on its surface, it can be dispersed in an organic solvent.
- Examples of the inorganic material particles used as the second substance include semiconductor particles such as silicon, germanium, titanium oxide, and indium oxide, insulator particles such as silicon oxide and silicon nitride, and metal particles such as gold, silver, and copper. is there.
- Examples of the resin material particles include particles made of polystyrene resin, nylon resin, polypropylene resin, polyethylene resin, and the like. In order to disperse these particles in an organic solvent, the particles are chemically surface modified.
- surface modification to silicon oxide particles can be performed by a method proposed by Hiroshi Utsuki et al. Or Kondo et al. (Utsuki et al., “Materials”, Vol. 24, No. 262, P54-58; Kondo M. et al, Langmuir, 1995, Volume 11 P394-397).
- silicon oxide particles are heated in a mixed solution of tetradecane and a primary alcohol (CH 3 (CH 2 ) n OH; n is a natural number of 3 to 16), whereby the hydroxyl groups of the alcohol molecules and the surface of the particles are The silanol group (Si—OH) undergoes a dehydration reaction, and the hydrocarbon group is bonded to the particle surface. Thereafter, by volatilizing and removing the mixed solution, particles having hydrocarbon groups bonded to the surface can be obtained.
- a mixed solution of tetradecane and a primary alcohol CH 3 (CH 2 ) n OH; n is a natural number of 3 to 16
- the surface can be chemically modified by the above method as long as it is an inorganic particle having an oxide film on the surface.
- a thin oxide film can be formed by exposing the surface to oxygen plasma or ozone gas and then chemically modified by the above method.
- particles of resin material it is possible to chemically modify the surface by the above method after introducing hydroxyl groups into the surface by irradiating oxygen plasma.
- the surface modification to a silicon oxide particle can also be performed using the silane coupling agent which has a hydrocarbon group.
- silane coupling agents include CH 3 (CH 2 ) n SiX 3 , CH 3 (CH 2 ) n SiCH 3 X 2 , CH 3 (CH 2 ) n Si (CH 3 ) 2 X ( n is a natural number of 1 to 19; X is Cl, OCH 3 , or OCH 2 CH 3 , and when X is 2 or more, X may not be the same).
- silicon oxide particles are immersed in a mixed solution of a silane coupling agent and hexane to bond the silane coupling agent to the particle surface.
- particles having a surface coated with a hydrocarbon group can be produced by separating the particles from the mixed solution using a centrifuge.
- the surface can be chemically modified using the same method.
- the surface can be chemically modified by the above method after forming a thin oxide film by exposing the surface to oxygen plasma or ozone gas.
- the second substance is a metal particle made of gold, silver, copper or the like
- these particles are put into a mixed solution of an alkyl mercaptan (CH 3 (CH 2 ) n SH; n is a natural number of 1 to 19) and alcohol.
- alkyl mercaptan CH 3 (CH 2 ) n SH; n is a natural number of 1 to 19
- alcohol By soaking, alkyl mercaptan can be bound to the surface.
- metal particles whose surfaces are coated with hydrocarbon groups can be produced by separating the particles from the mixed solution using a centrifuge.
- particles made of polypropylene or polyethylene have hydrocarbon groups on their surfaces, they can be dispersed in an organic solvent without any particular surface treatment.
- the solution (B) is prepared by adding a second substance (particles whose surface is chemically modified as described above or particles of a resin material having a hydrocarbon group on the surface) to an organic solvent and stirring the solution. It can be produced by applying sound waves.
- a solution 105 in which the first substance is dispersed is applied to the surface of the substrate 101 as shown in FIGS. 1B, 1C, 2A, and 2B.
- the solution 105 is applied using a blade 106.
- the shape of the blade 106 is not limited, but a plate shape is usually used.
- the blade 106 is arranged at a certain distance from the substrate 101 so that one end face is horizontal to the surface of the substrate 101. Then, between the end face of the blade 106 and the surface of the substrate 101, the solution 105 in which the first substance is dispersed is arranged as a curtain-shaped liquid film. The liquid is applied by moving the blade in one direction 113 so as not to break the curtain shape.
- the method for applying the solution 105 is not limited to the blade method, and a general method for applying the solution to the substrate, such as a spin coating method, a brush method, a slit coating method, or a die coating method, can be used.
- the solution 105 containing the first substance is disposed only in the first region 102.
- the reason why the solution 105 is disposed only in the first region 102 is that the adhesive force between the water-soluble solvent of the solution 105 and the second region 103 or the third region 104 is different from that of the water-soluble solvent of the solution 105 and the first region 102. It can be assumed that this is because the adhesive strength between the regions 102 is smaller. Such a relationship occurs in the adhesive force because the surface energy of the second region 103 and the third region 104 is smaller than the surface energy of the first region 102.
- the water-soluble solvent of the solution 105 is removed, whereby the first substance 108 is disposed in the first region 102 as shown in FIGS. 1D and 2C.
- the water-soluble solvent can be volatilized and removed by leaving the substrate 101 in the atmosphere, heating the substrate 101 in the atmosphere, or placing the substrate 101 in a reduced pressure atmosphere.
- the liquid 201 needs not to dissolve the solution 110.
- the liquid 201 contains an alcohol having fluorine (F) in the molecule, and a liquid composed only of the alcohol is preferably used.
- This alcohol is preferably 2,2,2-trifluoroethanol (CF 3 CH 2 OH).
- the method for exposing the substrate 101 to the liquid 201 is not particularly limited, and only the vicinity of the portion where the solution 110 is applied may be exposed to the liquid 201.
- Application of the solution 110 containing the second substance can be performed by the same method as application of the solution 105 containing the first substance.
- the solution 110 is disposed only in the second region 103.
- the substrate 101 is taken out of the container and the organic solvent in the solution 110 is removed, whereby the second substance 112 is disposed in the second region 103. Is done.
- the organic solvent can be volatilized and removed by leaving the substrate 101 in the atmosphere, heating the substrate 101 in the atmosphere, or placing the substrate 101 in a reduced-pressure atmosphere.
- the second region 103 covered with the hydrocarbon group and the organic solvent in the solution 110 have the same chemical properties, and therefore should have high affinity. For this reason, in the liquid 201 containing alcohol, the adhesive force between the solution 110 and the third region 104 covered with the fluorocarbon group is the adhesive force between the solution 110 and the second region 103. Smaller than As a result, it can be estimated that the solution 110 is disposed in the second region 103 in the liquid 201 but not disposed in the third region 104.
- the surface thereof is hydrophilic.
- F fluorine
- the alcohol molecule directs the fluorocarbon group (CF 3 (CF 2 ) n —) to the liquid side. It is speculated that it adsorbs to the hydrophilic region in the form of a monomolecular film.
- the surface of the first region 102 has chemical properties similar to those of the third region 104. As a result, it can be estimated that the solution 110 is not disposed in the first region 102 in the liquid 201.
- the solution 110 is selectively disposed only in the second region 103.
- Embodiment 2 In the method for arranging two kinds of substances on the substrate in Embodiment 2, the second substance is first arranged in the second region of the substrate in the previous step, and the first substance is placed in the first region in the subsequent step.
- the arrangement method is different from the arrangement method of the first embodiment, the rest is the same as the arrangement method of the first embodiment.
- the method of this embodiment will be described below with reference to schematic cross-sectional views in FIGS. 9A to 9G.
- symbol is attached
- the substrate 101 having the first region 102, the second region 103, and the third region 104 is immersed in the liquid 201 held in the container 202 (see FIG. 9A).
- a solution 110 containing a second substance and an organic solvent is applied to the surface of the substrate 101 immersed in the liquid 201 as shown in FIG. 9A.
- the application method of the solution 110 is the same as that in the first embodiment.
- the solution 110 containing hydrocarbon groups is disposed only in the second region 103 whose surface is covered with hydrocarbon groups. Note that the principle that the solution 110 is disposed only in the second region 103 in the liquid 201 is as described in the first embodiment.
- the substrate 101 is taken out from the liquid 201 (see FIG. 9C), and then the organic solvent of the solution 111 disposed on the second region 103 is removed by the same method as in the first embodiment, as shown in FIG. 9D.
- the second substance 112 contained in the solution 111 is disposed on the surface of the second region 103.
- a solution 105 containing a first substance and a water-soluble solvent is applied to the substrate 101 in the atmosphere.
- the application method of the solution 105 is the same as that in the first embodiment.
- the solution 105 is not disposed in the second region 103 but is disposed only in the first region 102 as shown in FIG. 9F.
- the water-soluble solvent of the solution 107 disposed on the first region 102 is removed by the same method as in Embodiment Mode 1, and the first substance 108 contained in the solution 107 is removed as shown in FIG. 9G. It is arranged on the surface of the first region 102.
- two kinds of substances (first substance and second substance) can be selectively arranged on the surface of the same substrate.
- a solution containing silicon particles and 1-propyl alcohol (hereinafter, this solution is described as a solution (A) in the examples) could be prepared.
- N-Hexadecane was used as an organic solvent for dispersing the second substance.
- a substance corresponding to the second substance was not dispersed in n-hexadecane.
- a 4-inch silicon wafer was irradiated with ultraviolet rays in ozone to remove organic substances on the surface and oxidize the surface.
- the silicon wafer after the treatment was a silicon substrate whose surface was covered with an oxide film, and the static contact angle of the silicon substrate surface with pure water was 10 degrees or less.
- the resist film pattern was a rectangle with a side of 2 ⁇ m to 2 mm, or a circular shape with a diameter of 2 ⁇ m to 2 mm.
- the silicon substrate was sequentially immersed in an etching solution of gold and nickel, and the metal film at a portion not covered with the resist film was removed.
- the resist film was removed by exposing the silicon substrate to an oxygen plasma atmosphere in a vacuum.
- a positive resist film pattern was formed on the silicon substrate without a metal film by photolithography.
- the pattern shape was the same as the pattern shape of the metal film.
- the metal film 302 pattern, the positive resist film 303 pattern, and the region 304 where the substrate surface was exposed were formed on the surface of the substrate 301 as shown in FIG. 3A.
- this substrate 301 was immersed in perfluorooctane in which 1 vol% of FAS was dissolved for 2 hours, and then rocked and washed in perfluorooctane. These operations were performed in a dry nitrogen gas atmosphere.
- the FAS monomolecular film 305 was formed in the region 304 where the substrate surface was exposed.
- the monomolecular film 305 is depicted as being formed on the surfaces of the metal film 302 and the resist film 303, but it is unclear whether or not the film is actually formed on these surfaces. is there.
- the region where the FAS monomolecular film 305 was formed became the third region covered with the fluorocarbon group.
- the resist film 303 was peeled off by rocking and washing the substrate 301 in acetone. By this step, as shown in FIG. 3C, a region 306 where the substrate surface was exposed was formed in the region where the resist film 303 was provided.
- the substrate 301 was mixed with 1 vol% octadecyltrichlorosilane (CH 3 (CH 2 ) 17 SiCl 3 : hereinafter abbreviated as OTS) in a mixed solution of n-hexadecane and chloroform (4: 1 by volume). After being immersed in 3 hours, it was washed by shaking in chloroform. These operations were performed in a dry nitrogen gas atmosphere.
- OTS octadecyltrichlorosilane
- an OTS monomolecular film 307 was formed in the region 306 where the substrate surface was exposed.
- the region where the OTS monomolecular film 307 was formed became the second region covered with the hydrocarbon group.
- this substrate 301 was sequentially immersed in an etching solution of gold and nickel, and the metal film 302 was removed. By this operation, as shown in FIG. 3E, a region 308 where the surface of the substrate was exposed was formed.
- the region 308 is a hydrophilic first region.
- a substrate having the first to third regions on the surface was prepared by a series of these operations.
- FIG. 6A An outline of the application method of solution (A) is shown in FIG. 6A.
- a glass plate 602 having a width of 30 mm, a height of 20 mm, and a thickness of 1 mm was arranged perpendicular to the substrate 601 with an interval of 0.2 mm.
- the substrate 601 is a substrate having the first to third regions on the surface, which is manufactured by the above method.
- the glass plate 602 was fixed using a fixing jig.
- the fixing jig was connected to a mechanism for adjusting the distance between the glass plate 602 and the substrate 601 and moving the glass plate 602 relative to the substrate 601 in the direction of the arrow 604 while maintaining a predetermined distance.
- the solution (A) was pipetted between the glass plate 602 and the substrate 601 to form a curtain-shaped liquid film 603. Thereafter, the solution (A) was applied to the substrate 601 by moving the glass plate 602 in the direction of the arrow 604 at a speed of 10 mm / s. Thereafter, the substrate 601 was naturally dried at room temperature for 30 minutes.
- FIGS. 6B and 6C are schematic diagrams showing a state in which n-hexadecane is applied to the surface of the substrate 601 in 2,2,2-trifluoroethanol 614.
- FIG. . In FIG. 6B, 2,2,2-trifluoroethanol 614 is omitted.
- FIG. 6B and FIG. 6C a coating method of n-hexadecane in this example will be described.
- a substrate 601 was placed on the bottom of a petri dish 613 having a diameter of 12 cm and a depth of 2.5 cm, and a slit coater 605 was placed on the upper surface of the substrate 601.
- the structure of the slit 608 and the positional relationship between the slit 608 and the substrate 601 will be described with reference to FIGS. 6B and 6C.
- n-hexadecane has not yet been inserted into the slit 608. Therefore, the liquid film 606 in the figure did not exist. Also, 2,2,2-trifluoroethanol 614 was not present.
- the slit coater 605 was formed by providing a slit 608 penetrating through the stainless steel plate inside a stainless steel plate having a width of 30 mm, a height of 30 mm, and a maximum thickness of 5 mm.
- the slit width 611 in the slit coater upper portion 609 was 3 mm, and the slit width 616 in the slit coater lower portion 610 was 0.5 mm.
- Absorbent cotton 612 was placed inside the slit 608.
- the distance between the tip of the slit coater lower part 610 and the substrate 601 was set to 0.2 mm.
- the slit coater 605 was fixed using a fixing jig.
- the fixing jig adjusts the distance between the surface of the substrate 601 and the slit coater 605, and moves the slit coater 605 with respect to the substrate 601 in the direction of the arrow 607 while keeping a predetermined distance (not shown). )).
- 2,2,2-trifluoroethanol 614 was slowly put in the petri dish 613 so that a part of the slit coater upper part 609 was immersed in the liquid.
- n-hexadecane was slowly inserted from the upper part of the slit 608 to form a curtain-like liquid film 606 between the lower part of the slit coater 610 and the substrate 601.
- the slit coater 605 was moved in the arrow direction 607 at a speed of 10 mm / s, and n-hexadecane was applied to the surface of the substrate 601.
- the substrate 601 was taken out from 2,2,2-trifluoroethanol 614.
- the solution (A) was applied to a substrate having the same structure as the substrate 601 and dried at room temperature, and then n-hexadecane was applied in the atmosphere.
- FIG. 7A is a schematic plan view of the substrate used in the present reference example and the comparative example.
- 7B to 7D are photomicrographs showing the state of the substrate surface after applying the solution (A) to the substrate in the present reference example and the comparative example. 7B to 7D correspond to the respective regions on the substrate surface shown in the schematic plan view of FIG. 7A.
- the region 702 where the substrate surface is exposed is the first region
- the OTS monomolecular film formation region 703 is the second region
- the FAS monomolecular film formation region 701 is the third region. Respectively.
- FIG. 7B is a photomicrograph of the substrate surface after the solution (A) was applied in the air and dried at room temperature in this reference example.
- the silicon particles 704 are selectively arranged in the region 702 where the substrate surface is exposed.
- FIG. 7C is a micrograph of the substrate surface after applying n-hexadecane in 2,2,2-trifluoroethanol in this reference example.
- n-hexadecane 705 is selectively disposed only in the monomolecular film formation region 703 of OTS.
- FIG. 8 shows a second example of a second region composed of a circular first region having a diameter of 100 ⁇ m and a monomolecular film of OTS among substrates taken out from the atmosphere from 2,2,2-trifluoroethanol into the reference example. It is the microscope picture which observed the substrate surface in which the area
- the positions of silicon particles 801 and n-hexadecane 802 are indicated by arrows. It was confirmed that the positions of the silicon particles 801 and n-hexadecane 802 correspond to the hydrophilic first region and the second region where the OTS monomolecular film is formed, respectively.
- FIG. 7D is a photomicrograph of the substrate surface after applying the solution (A) in the air and drying, and then applying n-hexadecane in the air as a comparative example.
- n-hexadecane was also disposed in the region where the silicon particles were previously disposed (first region) (part indicated by 707 in the figure). It can be seen that it is disposed in both the OTS monomolecular film formation region 706.
- n-hexadecane cannot be applied separately only to the OTS monolayer formation region in the atmosphere.
- the reason why n-hexadecane is also disposed in the region where silicon particles are present in the atmosphere is presumed to be because the silicon particles are hydrophilic.
- Example 1 Instead of n-hexadecane in the reference example, a solution in which silicon oxide particles (average particle size: 300 nm) whose surface was coated with hexyl groups (— (CH 2 ) 5 —CH 3 ) was dispersed in hexane was used. Otherwise, the same experiment as in the reference example was performed. That is, in Example 1, the second substance was silicon oxide particles whose surface was coated with a hexyl group (— (CH 2 ) 5 —CH 3 ), and the organic solvent was hexane.
- a method for producing the above solution containing silicon oxide particles and hexane (hereinafter, this solution will be referred to as a solution (B) in the examples) will be described.
- a 50 mL centrifuge tube is filled with 30 mL of a hexane solution in which 1 vol% of hexyltrichlorosilane is dissolved, and 0.3 g of silicon oxide particles having an average particle size of 300 nm (colloidal silica manufactured by Fuso Chemical Industry Co., Ltd.). And left overnight.
- This operation was performed in a dry nitrogen atmosphere. Thereafter, the centrifuge tube was placed in an ultrasonic cleaner and ultrasonic waves were applied. Thereby, the silicon oxide particles were uniformly dispersed in hexane.
- the centrifuge tube was placed in a centrifuge and rotated at 5000 rpm for 10 minutes. Thereby, silicon oxide particles settled on the bottom of the centrifuge tube.
- the supernatant of the centrifuge tube was sucked up using a pipette, and an amount of hexane equal to the sucked amount was put into the centrifuge tube. Thereafter, ultrasonic waves were applied to the centrifuge tube to disperse the silicon oxide particles.
- a mixed solution of 0.3 g of silicon oxide particles not treated with hexyltrichlorosilane and 30 mL of hexane was placed in a glass container, and ultrasonic waves were applied. After application of ultrasonic waves, the supernatant of the hexane solution was transparent, and silicon oxide particles were present in an aggregated state at the bottom. The supernatant of this hexane solution was sucked with a drop of dropoid and dropped onto a glass substrate, and then hexane was removed by drying, and the substrate surface was observed with an optical microscope. However, no silicon oxide particles were observed on the substrate surface.
- the solution (A) and the solution (B) were applied to the substrate in the same manner as in the reference example.
- the solution (A) was applied to the substrate in the same manner as in the reference example, it was naturally dried at room temperature for 30 minutes. Thereafter, the solution (B) was applied in the same manner as in the reference example in which n-hexadecane was applied in the state where the substrate was immersed in 2,2,2-trifluoroethanol. The product was taken out from 2-trifluoroethanol and naturally dried for 10 minutes in a room temperature atmosphere.
- silicon particles were arranged in the first region of the substrate, and silicon oxide particles whose surface was coated with hexyl groups were arranged in the second region.
- Example 2 In the same manner as in Example 1, the solution (A) and the solution (B) were applied. However, the order of applying the solution (A) and the solution (B) was reversed.
- the solution (B) was applied in 2,2,2-trifluoroethanol, taken out from 2,2,2-trifluoroethanol, and the substrate was naturally dried for 10 minutes near room temperature.
- solution (A) was applied to the substrate in the air, and then naturally dried at room temperature for 30 minutes.
- silicon particles can be selectively disposed in the hydrophilic region and silicon oxide particles can be selectively disposed in the OTS region.
- the size of the region where the first substance and the second substance are arranged can be reduced to about a micrometer by using a photolithography method or the like. Therefore, according to the method of the present invention, it becomes easy to selectively arrange two kinds of substances in a micrometer-sized region. Furthermore, in the method of the present invention, a solution containing the first substance and the second substance can be applied to a large-area substrate with an inexpensive application device such as a slit coater. Therefore, if the method of the present invention is used, two kinds of minute patterns can be formed on a large-area substrate at a low cost.
- the method of the present invention capable of realizing such an effect can be applied as a method for selectively arranging n-type and p-type silicon particles having a diameter of nanometer size. Therefore, a transistor having a pn junction can be reduced on a large-area substrate. Can be formed at a price. Furthermore, since the method of the present invention can be applied as a method of selectively arranging an electrode material and a semiconductor material, an electrode and an active layer which are constituent elements of a transistor can be formed on a large-area substrate at a low cost.
- the method of the present invention can be applied to, for example, a manufacturing method of a large area organic electroluminescence display, and the active layer and the electrode of a transistor for driving the large area organic electroluminescence display are reduced with high accuracy. Can be made at a price.
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Abstract
Description
(1)前記基板に、前記第1の物質と水溶性溶媒とを含む溶液を塗布する工程、
(2)前記基板の表面から前記水溶性溶媒を除去することによって、前記第1の物質を、前記第1の領域の表面に配置する工程、
(3)分子中にフッ素を有するアルコールを含む液体に前記基板を浸漬する工程、
(4)前記液体に前記基板を浸漬しながら、前記第2の物質と有機溶媒とを含む溶液を前記基板の表面に塗布する工程、
(5)前記液体から前記基板を取り出す工程、および
(6)前記基板の表面から前記有機溶媒を除去することによって、前記第2の物質を、前記第2の領域の表面に配置する工程。
(1)分子中にフッ素を有するアルコールを含む液体に前記基板を浸漬する工程、
(2)前記液体に前記基板を浸漬しながら、前記第2の物質と有機溶媒とを含む溶液を、前記基板の表面に塗布する工程、
(3)前記液体から前記基板を取り出す工程、
(4)前記基板の表面から前記有機溶媒を除去することによって、前記第2の物質を前記第2の領域の表面に配置する工程、
(5)前記基板に、前記第1の物質と水溶性溶媒とを含む溶液を塗布する工程、および
(6)前記基板の表面から前記水溶性溶媒を除去することによって、前記第1の物質を、前記第1の領域の表面に配置する工程。
本発明に係る方法の実施の形態について、図1A~図1Hおよび図2A~図2Gの模式図を参照しながら説明する。なお、図2A~図2Gは、それぞれ、図1B~図1Hに示された模式図に対応する断面模式図である。
第1の物質と第2の物質とを配置するための基板として、図1Aに示すような、表面に第1の領域102と、第2の領域103と、第3の領域104とが形成されている基板101を準備する。第1の領域102は、親水性の表面を有する第1の物質を配置する領域である。第2の領域103は、炭化水素基によって表面が被覆されている第2の物質を配置する領域である。
第1の物質を水溶性溶媒に分散させた、第1の物質と水溶性溶媒とを含む溶液(図1B、図1C、図2Aおよび図2Bに示された溶液105に相当。本実施の形態では、溶液(A)と記載する場合がある)を準備する。本発明における水溶性溶媒とは、水を含む液体のことをいう。水溶性溶媒は、40vol%以上の水を含む液体であることが好ましい。より好ましくは、水溶性溶媒が水であること、すなわち、溶液(A)が第1の物質の水溶液であることである。
第2の物質を有機溶媒に分散させた、第2の物質と有機溶媒とを含む溶液(図1E、図1F、図2Dおよび図2Eに示された溶液110に相当。本実施の形態では、溶液(B)と記載する場合がある)を準備する。本発明における有機溶媒とは、水への溶解度(水100gに溶解する重量)が10g以下の、炭化水素基を有する液体をいう。これらの液体としては、炭素数が6~16のアルカン、シクロヘキサン、テレビン油等が含まれる。
第1の物質を第1の領域102に配置するために、図1B、図1C、図2Aおよび図2Bに示すように、第1の物質が分散した溶液105を基板101の表面に塗布する。
第2の物質を第2の領域103に配置するために、図1E、図1F、図2Dおよび図2Eに示すように、分子中にフッ素(F)を有するアルコールを含む液体201を保持した容器202内部に基板101を浸漬し、この状態で第2の物質を含む溶液110を塗布する。
本発明者は、図1E、図1F、図2Dおよび図2Eに示される工程において、炭化水素基を含む溶液110が第2の領域103のみに配置される原理を、以下のように推測している。アルコール中では、フッ化炭素基を有する分子と炭化水素基を有する分子との間にはほとんど接着力が働かないことが分かっている(Nakagawa T. et al.: Journal of Vacuum Science of Technology B1994年12号P2215~2218)。
実施の形態2における2種類の物質の基板への配置方法は、まず先の工程で第2の物質を基板の第2の領域に配置し、その後の工程において第1の物質を第1の領域に配置する点が実施の形態1の配置方法とは異なるものの、それ以外は実施の形態1の配置方法と同じである。本実施の形態の方法を、図9A~図9Gの断面模式図を参照しながら以下に説明する。なお、実施の形態1で説明した構成と同じ構成については、同一の符号を付して重複する説明を省略する。
本参考実施例では、本発明の方法の原理を確認することを目的に実験を行った。
第1の物質が水溶性溶媒に分散している溶液として、粒径が50nm程度のシリコン粒子をアルコールに分散させた溶液を用いた。この溶液は以下の方法で作製された。
実施の形態1において、図3A~図3Eを参照しながら説明した方法を用いて、基板を作製した。ここでは、図3A~図3Eを参照しながら、本参考実施例での基板の作製方法について説明する。
溶液(A)の塗布方法の概略を、図6Aに示す。幅30mm、高さ20mm、厚み1mmのガラス板602を基板601に対して垂直に、0.2mmの間隔を開けて配置した。基板601は、上記の方法で作製した、第1~第3の領域を表面に有する基板である。
図6Bおよび図6Cは、基板601の表面に、2、2、2-トリフルオロエタノール614中でn-ヘキサデカンを塗布している様子を示した模式図である。なお、図6Bでは、2、2、2-トリフルオロエタノール614は省略されている。図6Bおよび図6Cを参照しながら、本実施例におけるn-ヘキサデカンの塗布方法を示す。
図7Aは、本参考実施例および上記比較例で使用した基板の平面模式図である。図7B~図7Dは、本参考実施例および上記比較例において基板に溶液(A)を塗布した後の基板表面の様子を示す顕微鏡写真である。なお、図7B~図7Dにおける基板表面の各領域の位置は、図7Aの平面模式図に示された基板表面の各領域とそれぞれ対応している。
参考実施例におけるn-ヘキサデカンの代わりに、表面がヘキシル基(-(CH2)5-CH3)によって被覆された酸化シリコン粒子(平均粒径:300nm)をヘキサンに分散させた溶液を用い、それ以外は参考実施例と同様の実験を行った。すなわち、実施例1では、第2の物質が、表面がヘキシル基(-(CH2)5-CH3)によって被覆されている酸化シリコン粒子であり、有機溶媒がヘキサンであった。
実施例1と同様の方法で、溶液(A)と溶液(B)を塗布した。但し、溶液(A)と溶液(B)を塗布する順番を逆にした。
Claims (4)
- 親水性の表面を有する第1の物質および炭化水素基によって表面が被覆されている第2の物質を、基板の表面に選択的に配置する方法であって、
前記基板は、第1の領域、第2の領域および第3の領域を表面に有しており、
前記第1の領域は親水性であり、
前記第2の領域は、炭化水素基によって被覆されており、
前記第3の領域は、フッ化炭素基によって被覆されており、
前記方法は、以下の工程を包含する:
(1)前記基板に、前記第1の物質と水溶性溶媒とを含む溶液を塗布する工程、
(2)前記基板の表面から前記水溶性溶媒を除去することによって、前記第1の物質を、前記第1の領域の表面に配置する工程、
(3)分子中にフッ素を有するアルコールを含む液体に前記基板を浸漬する工程、
(4)前記液体に前記基板を浸漬しながら、前記第2の物質と有機溶媒とを含む溶液を前記基板の表面に塗布する工程、
(5)前記液体から前記基板を取り出す工程、および
(6)前記基板の表面から前記有機溶媒を除去することによって、前記第2の物質を、前記第2の領域の表面に配置する工程。 - 前記液体が2、2、2-トリフルオロエタノールである、請求項1に記載の方法。
- 親水性の表面を有する第1の物質および炭化水素基によって表面が被覆されている第2の物質を、基板の表面に選択的に配置する方法であって、
前記基板は、第1の領域、第2の領域および第3の領域を表面に有しており、
前記第1の領域は親水性であり、
前記第2の領域は、炭化水素基によって被覆されており、
前記第3の領域は、フッ化炭素基によって被覆されており、
前記方法は、以下の工程を包含する:
(1)分子中にフッ素を有するアルコールを含む液体に前記基板を浸漬する工程、
(2)前記液体に前記基板を浸漬しながら、前記第2の物質と有機溶媒とを含む溶液を、前記基板の表面に塗布する工程、
(3)前記液体から前記基板を取り出す工程、
(4)前記基板の表面から前記有機溶媒を除去することによって、前記第2の物質を前記第2の領域の表面に配置する工程、
(5)前記基板に、前記第1の物質と水溶性溶媒とを含む溶液を塗布する工程、および
(6)前記基板の表面から前記水溶性溶媒を除去することによって、前記第1の物質を、前記第1の領域の表面に配置する工程。 - 前記液体が2、2、2-トリフルオロエタノールである、請求項3に記載の方法。
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| CN2009801011903A CN101884255B (zh) | 2008-03-31 | 2009-03-17 | 将两种物质有选择地配置于基板的表面的方法 |
| US12/627,801 US7709291B2 (en) | 2008-03-31 | 2009-11-30 | Method of disposing selectively two types of substances on surface of substrate |
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| US8178154B2 (en) | 2010-03-15 | 2012-05-15 | Panasonic Corporation | Method for disposing a component |
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| JP4733786B2 (ja) * | 2009-10-06 | 2011-07-27 | パナソニック株式会社 | 部材をマウントする方法 |
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Also Published As
| Publication number | Publication date |
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| US20100073452A1 (en) | 2010-03-25 |
| US7709291B2 (en) | 2010-05-04 |
| JPWO2009122660A1 (ja) | 2011-07-28 |
| CN101884255B (zh) | 2012-06-27 |
| CN101884255A (zh) | 2010-11-10 |
| JP4388138B2 (ja) | 2009-12-24 |
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