WO2006006406A1 - 強誘電体薄膜形成用組成物、強誘電体薄膜及び強誘電体薄膜の製造方法並びに液体噴射ヘッド - Google Patents
強誘電体薄膜形成用組成物、強誘電体薄膜及び強誘電体薄膜の製造方法並びに液体噴射ヘッド Download PDFInfo
- Publication number
- WO2006006406A1 WO2006006406A1 PCT/JP2005/011996 JP2005011996W WO2006006406A1 WO 2006006406 A1 WO2006006406 A1 WO 2006006406A1 JP 2005011996 W JP2005011996 W JP 2005011996W WO 2006006406 A1 WO2006006406 A1 WO 2006006406A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thin film
- ferroelectric thin
- composition
- forming
- water
- Prior art date
Links
- 239000010409 thin film Substances 0.000 title claims abstract description 133
- 239000000203 mixture Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 17
- 238000005507 spraying Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 150000002736 metal compounds Chemical class 0.000 claims abstract description 28
- 239000013078 crystal Substances 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 150000002902 organometallic compounds Chemical class 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000084 colloidal system Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 abstract description 13
- 238000003860 storage Methods 0.000 abstract description 11
- 239000010408 film Substances 0.000 description 42
- 239000000758 substrate Substances 0.000 description 18
- 230000007062 hydrolysis Effects 0.000 description 9
- 238000006460 hydrolysis reaction Methods 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000003980 solgel method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- KQNKJJBFUFKYFX-UHFFFAOYSA-N acetic acid;trihydrate Chemical compound O.O.O.CC(O)=O KQNKJJBFUFKYFX-UHFFFAOYSA-N 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 229940046892 lead acetate Drugs 0.000 description 3
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 3
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910003781 PbTiO3 Inorganic materials 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- -1 acetate compound Chemical class 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000004703 alkoxides Chemical class 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- 238000000018 DNA microarray Methods 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/07—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base
- H10N30/074—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing
- H10N30/077—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition
- H10N30/078—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition by sol-gel deposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/03—Specific materials used
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/853—Ceramic compositions
- H10N30/8548—Lead-based oxides
- H10N30/8554—Lead-zirconium titanate [PZT] based
Definitions
- composition for forming ferroelectric thin film for forming ferroelectric thin film, manufacturing method of ferroelectric thin film and ferroelectric thin film, and liquid jet head
- the present invention relates to a composition for forming a ferroelectric thin film used to form a ferroelectric thin film by MOD (Metal Organic Deposition) method, a method for producing a ferroelectric thin film and a ferroelectric thin film, and a liquid It relates to a jet head.
- MOD Metal Organic Deposition
- a ferroelectric thin film containing a crystal represented by lead zirconate titanate (PZT) or the like has a spontaneous polarization, a high dielectric constant, an electro-optical effect, a piezoelectric effect, a pyroelectric effect, and the like. Applied to a wide range of device development such as piezoelectric elements. Further, as a method of forming such a ferroelectric thin film, for example, the MOD method, sol-gel method, CVD (Chemical Vapor Deposition) method, sputtering method and the like are known. In particular, the MOD method and sol-gel The method has the advantage that the ferroelectric thin film can be deposited at relatively low cost and easily.
- PZT lead zirconate titanate
- a ferroelectric thin film is generally prepared by dissolving an organic metal compound such as a metal alkoxide in alcohol and adding a hydrolysis inhibitor etc. to the resulting solution. After being applied on an object, it is dried and fired to form a film.
- a colloid solution obtained by dissolving an organometallic compound in alcohol and adding a minimum amount of water to the solution of the organometallic compound to cause hydrolysis and polycondensation is used.
- a ferroelectric thin film is formed in the same manner as the MOD method except for the above (see, for example, Patent Document 1).
- the composition for forming a ferroelectric thin film stored in a tank is transported by a dry inert gas (carrier gas) such as dry nitrogen gas to a nozzle disposed on a target object, and the composition for forming a ferroelectric thin film is It drips on the target object which rotates the nozzle.
- a precursor film is formed on a target object, dried, degreased and gelled, and then fired to produce a ferroelectric thin film.
- the alcohol (solvent) contained in the composition for forming a ferroelectric thin film is volatilized, and as a result, the dispersion stability of the organic metal compound is lowered, and there is a problem that the sol aggregates and precipitates. .
- the sol composition of the composition for forming a ferroelectric thin film fluctuates, and this causes the film components of the ferroelectric thin film to be dispersed nonuniformly, resulting in a ferroelectric
- the piezoelectric characteristics of the piezoelectric element having the body thin film fluctuate. Furthermore, in a liquid jet head provided with a piezoelectric element as a piezoelectric actuator, such fluctuation in the piezoelectric characteristic of the piezoelectric element causes dispersion in the liquid ejection characteristic.
- Patent Document 1 Japanese Patent Application Laid-Open No. 06-5946
- the present invention is a colloidal solution for the MOD method which can maintain the dispersion stability and storage stability of a very excellent organometallic compound for a long period of time.
- An object of the present invention is to provide a composition for forming a thin film, a ferroelectric thin film, a method of manufacturing a ferroelectric thin film, and a liquid jet head.
- a colloidal solution for MOD method containing an organometallic compound containing a metal constituting a ferroelectric thin film
- the composition for forming a ferroelectric thin film is characterized by containing at least water other than crystal water.
- the dispersion stability and storage of the extremely excellent organic metal compound in a dry inert gas environment! Stability can be maintained over a long period of time.
- a second aspect of the present invention is the method according to the first aspect, except water of crystallization of the organometallic compound.
- the molar amount of water is 1 to 10 times the total molar amount of the metal contained in the colloidal solution, in the composition for forming a ferroelectric thin film.
- the viscosity of the composition for forming a ferroelectric thin film is an optimum value for forming a ferroelectric thin film, so that the ferroelectric thin film can be formed relatively easily. can do.
- a third aspect of the present invention is the method according to the second aspect, wherein the molar amount of water other than the crystal water of the organometallic compound is 5 to 7 times the total molar amount of the metal contained in the colloidal solution.
- a composition for forming a ferroelectric thin film characterized by
- the viscosity of the composition for forming a ferroelectric thin film is a more optimal value for forming a ferroelectric thin film, and therefore, it is relatively easy to form a ferroelectric thin film. It can be membraned.
- a fourth aspect of the present invention is a ferroelectric thin film characterized by being formed by the composition for forming a ferroelectric thin film according to any one of the first to third aspects.
- the fourth aspect it is possible to relatively easily realize a ferroelectric thin film having film components dispersed substantially uniformly and having stable piezoelectric characteristics.
- a liquid jet head characterized in that the piezoelectric element having the ferroelectric thin film of the fourth aspect is provided as a piezoelectric actuator for jetting a liquid.
- the fifth aspect it is possible to relatively easily realize a liquid jet head having stable liquid ejection characteristics and having high reliability.
- a method of producing a colloidal solution for an MOD method comprising an organometallic compound containing a metal forming a ferroelectric thin film, comprising: The method for producing a ferroelectric thin film characterized in that the composition for forming a ferroelectric thin film is applied onto an object, dried and baked to form the ferroelectric thin film. It is in.
- the composition for forming a ferroelectric thin film containing boiling water having a relatively high boiling point has extremely excellent dispersion stability of the organic metal compound in a dry inert gas environment. And storage stability can be maintained over a long period of Scattered ferroelectric thin films can be manufactured relatively easily.
- a seventh aspect of the present invention is the coating method according to the sixth aspect, wherein the composition for forming a ferroelectric thin film is coated on the target object, the composition for forming a ferroelectric thin film.
- the composition for forming a ferroelectric thin film is transported to a nozzle connected to the tank by introducing a dry inert gas into a tank where the liquid is stored, and the composition for forming a ferroelectric thin film is The present invention provides a method of manufacturing a ferroelectric thin film characterized in that the material is dropped onto a rotating object from a nozzle.
- the seventh aspect it is possible to relatively easily form a precursor film in which film components are substantially uniformly dispersed.
- the composition for forming a ferroelectric thin film of the present invention is a colloid solution (sol) for the MOD method used to form a ferroelectric thin film by MOD (Metal Organic Deposition) method, and specifically, An organometallic compound containing a metal forming the dielectric thin film, and water other than the crystal water of the organic metal compound are contained at least.
- the MOD method is a method of obtaining a film or the like simply by applying an alcohol solution or an alcohol solution as a raw material to an organic metal material solution without causing gel reaction, drying, or heat treatment.
- crystal water of an organic metal compound refers to, for example, water (crystal water) contained in crystals of an organic metal compound to be a material for forming a ferroelectric thin film.
- water other than crystal water of organic metal compound is water other than such water of crystallization.
- the amount (content) of water other than the crystal water of the organic metal compound is not particularly limited in particular from the viewpoint of enhancing the dispersion stability and storage stability of the organic metal compound.
- the molar amount of water other than the crystal water of the organometallic compound is preferably 1 to 10 times, more preferably 5 to 7 times the total molar amount of the metal contained in the solution of the organometallic compound. It is good to do.
- total molar amount of metal contained in a solution of an organic metal compound means, for example, in the case of a composition for forming a PZT thin film for forming a lead zirconate titanate (PZT) thin film, It is the total molar amount of the metal that constitutes PZT, that is, lead (Pb), titanium (Ti), and zirconium (Zr).
- the composition for forming a ferroelectric thin film of the present invention which is used to form a ferroelectric thin film by the MOD method, includes an alcohol as a solvent in addition to an organic metal compound such as a metal alkoxide, an acetate compound and the like. And a hydrolysis inhibitor which inhibits hydrolysis of the organic metal compound.
- the solvent of the organic metal compound include butoxyethanol, propanol and the like.
- the hydrolysis inhibitor include monoethanolamine, diethanolamine, triethanolamine, and acetylacetone.
- the organic metal compound is stabilized to thereby prevent the generation of cracks in the ferroelectric thin film.
- a filler for example, polyethylene glycol or the like may be added as an additive, and a thickener or the like may be added as another additive.
- the boiling point is relatively high! Therefore, the dispersion stability of the organometallic compound can be maintained over a long period of time in a dry inert gas environment so that the sol can be reliably prevented from flocculating and precipitating. it can.
- the composition for forming a ferroelectric thin film is stored in a tank or the like together with a dry inert gas for a certain period of time, it is possible to reliably prevent the precipitation of the sol, so the storage stability of the organometallic compound is extended for a long time. Can be maintained.
- a colloid solution for an MOD method containing an organometallic compound for example, an organometallic compound and a hydrolysis inhibitor are put in an alcohol (solvent).
- the solution is prepared by adding water other than water of crystallization of the organometallic compound to the colloidal solution.
- the solution of the organometallic compound contains a hydrolysis inhibitor, the subsequent addition of water does not cause hydrolysis between the organometallic compound and water.
- the present application exerts its effect more particularly in the case of a colloidal solution for the MOD method.
- a composition for forming a ferroelectric thin film of Comparative Example 1 was prepared in the same manner as in Example 1 except that pure water was not added.
- a ferroelectric thin film formed by the above-described composition for forming a ferroelectric thin film is
- a ferroelectric material piezoelectric material
- PZT lead zirconate titanate
- relaxor ferroelectric material to which a metal such as nickel, magnesium, bismuth, yttrium or ytterbium is added. It contains crystals.
- the composition thereof is, for example, Pb TiO (PT), PbZrO (PZ), Pb (Zr Ti) O (PZT), Pb (Mg Nb) O— PbTi
- Examples include BiScO-PbTiO3 (BS-PT), and BiYbO-PbTiO3 (BY-PT).
- Such a ferroelectric thin film of the present invention is formed of a composition for forming a ferroelectric thin film having very excellent dispersion stability and storage stability of an organic metal compound, so that the film component is Almost uniform dispersion, that is, the film quality of the ferroelectric thin film becomes substantially uniform, and stable piezoelectric characteristics can be exhibited.
- composition for forming a ferroelectric thin film according to the present invention described above and the ferroelectric thin film formed using this composition for forming a ferroelectric thin film are applied to a wide range of device development.
- the application, etc. for example, microactuators, filters, delay lines, lead selectors, tuning fork oscillators, tuning fork clocks, transceivers, piezoelectric pickups, piezoelectric earphones, piezoelectric microphones, SAW Applications include filters, RF modulators, resonators, delay elements, multistrip force bras, piezoelectric accelerometers, and piezoelectric speakers.
- a hydrolysis inhibitor or the like is added to a solution obtained by dissolving an organometallic compound in a solvent such as alcohol, and then crystallization water of the organometallic compound is added.
- the prepared composition for forming a ferroelectric thin film is applied on an object, and then it is dried and degreased. By firing, a ferroelectric thin film is formed.
- the composition for forming a ferroelectric thin film containing water having a relatively high boiling point is extremely excellent in a dry inert gas environment. Since the dispersion stability and storage stability of the organic metal compound can be maintained over a long period of time, the film component is dispersed substantially uniformly, that is, the ferroelectric substance whose film quality is substantially uniform. The thin film can be formed relatively easily.
- a dry inert gas is contained in a tank in which the composition for forming a ferroelectric thin film is stored. It is preferable to introduce the composition for forming a ferroelectric thin film at a predetermined flow rate, convey the composition for forming a ferroelectric thin film to a nozzle connected to a tank, and drop the composition for forming a ferroelectric thin film onto an object to be rotated by the nozzle force. I'm sorry. Thus, a precursor film of a ferroelectric thin film in which film components are substantially uniformly dispersed can be relatively easily manufactured.
- FIG. 1 is an exploded perspective view schematically showing an ink jet recording head which is an example of a liquid jet head
- FIG. 2 is a plan view and a sectional view taken along the line AA 'of FIG.
- the flow path formation substrate 10 is a single crystal silicon substrate with a plane orientation (110), and one surface thereof is an acid previously formed by thermal oxidation. Silicon oxide (SiO 2) with a thickness of 0.5 to 2
- An elastic membrane 50 of m is formed.
- a plurality of pressure generating chambers 12 partitioned by a plurality of partition walls 11 are arranged in parallel by anisotropically etching the silicon single crystal substrate with the force on one side thereof.
- a communication portion 13 communicated with a reservoir portion 32 of a protective substrate 30 described later. It is formed. Further, the communicating portion 13 is communicated with the pressure generating chamber 12 at one end in the longitudinal direction via the ink supply path 14 respectively.
- a mask film 51 for forming the pressure generating chamber 12 is provided, and on the mask film 51, each pressure generating chamber 12 is formed.
- a nozzle plate 20 having a nozzle opening 21 communicating with the vicinity of the end opposite to the ink supply path 14 is fixed by means of an adhesive, a heat welding film or the like.
- the piezoelectric element 300 is formed by laminating the conductive layer 70 and the upper electrode film 80 having a thickness of, for example, about 0.05 ⁇ m by a process described later.
- the ferroelectric thin film 70 of the present embodiment is a composition for forming a ferroelectric thin film formed of a colloid solution for the MOD method obtained by adding water other than crystal water of an organic metal compound to a solution of an organic metal compound. It is formed of things.
- the piezoelectric element 300 refers to a portion including the lower electrode film 60, the ferroelectric thin film 70, and the upper electrode film 80.
- one of the electrodes of the piezoelectric element 300 is used as a common electrode, and the other electrode and the ferroelectric thin film 70 are patterned for each pressure generating chamber 12.
- a portion which is made up of one of the patterned electrodes and the ferroelectric thin film 70, and a portion in which the piezoelectric strain is caused by the application of the voltage to both electrodes is called a piezoelectric active portion.
- the lower electrode film 60 is used as a common electrode of the piezoelectric element 300
- the upper electrode film 80 is used as an individual electrode of the piezoelectric element 300.
- the piezoelectric active portion is formed for each pressure generating chamber 12.
- the piezoelectric element 300 and the diaphragm in which displacement occurs by driving the piezoelectric element 300 are collectively referred to as a piezoelectric actuator.
- the elastic film 50, the insulator film 55, and the lower electrode film 60 function as a diaphragm.
- a protective substrate 30 having a piezoelectric element holding portion 31 capable of securing a space in the region facing the piezoelectric element 300 to such an extent that it does not inhibit its movement is adhered. It is joined via the agent. Since the piezoelectric element 300 is formed in the piezoelectric element holding portion 31 and protected from being influenced by the external environment, it is protected. The piezoelectric element holding portion 31 may or may not be sealed in space.
- the protective substrate 30 is provided with a reservoir portion 32 which constitutes at least a part of the reservoir 100 which is a common ink chamber of each pressure generation chamber 12, and the reservoir portion 32 flows as described above.
- a reservoir 100 communicating with the communicating portion 13 of the passage forming substrate 10 and constituting a common ink chamber of each pressure generating chamber 12 is configured.
- a through hole 33 which penetrates the protective substrate 30 in the thickness direction is provided.
- the lead electrode 90 drawn out from each piezoelectric element 300 has the vicinity of the end thereof It is exposed in the through hole 33.
- a compliance substrate 40 composed of the sealing film 41 and the fixing plate 42 is bonded.
- the fixing plate 42 is formed of a hard material such as metal.
- the region of the fixing plate 42 facing the reservoir 100 is an opening 43 completely removed in the thickness direction, so that only one side of the reservoir 100 is a flexible sealing film 41. It is sealed.
- the driving IC force (not shown) is obtained.
- driving voltage is applied between the lower electrode film 60 and the upper electrode film 80 corresponding to the pressure generating chamber 12, and the elastic film 50, the insulator film 55, the lower electrode film 60 and the By bending and deforming the dielectric thin film 70, the pressure in each pressure generating chamber 12 is increased and the ink droplet is discharged from the nozzle opening 21.
- the ink jet recording head of the embodiment described above is for forming a ferroelectric thin film in which the ferroelectric thin film 70 contains an organic metal compound and water other than the water of crystallization of the organic metal compound. Since the composition is formed of the composition, that is, the composition for forming a ferroelectric thin film having very excellent dispersion stability and storage stability of the organic metal compound, the film components of the ferroelectric thin film 70 are dispersed substantially uniformly. The film quality of the ferroelectric thin film 70 becomes substantially uniform. Therefore, the ink ejection characteristics of the head can be stabilized, and the reliability of the head can be improved.
- an ink jet recording head that discharges ink as the liquid jet head has been described as an example, but the present invention is not limited to this, and for example, a recording head used for an image recording apparatus such as a printer Color material jet head used for manufacturing color filter such as liquid crystal display, electrode material jet head used for electrode formation such as organic EL display, FED (surface emitting display), bioorganic jet head used for bio chip manufacture Etc. can be mentioned.
- FIG. 1 is an exploded perspective view showing an outline of a recording head according to Embodiment 2 of the present invention.
- FIG. 2 is a plan view and a cross-sectional view taken along the line AA ′ of a recording head according to Embodiment 2 of the present invention. Explanation of sign
- Reference Signs List 10 channel forming substrate 12 pressure generating chamber 20 nozzle plate 21 nozzle opening 30 protective substrate 31 piezoelectric element holding portion 32 reservoir portion 40 compliance substrate 60 lower electrode film 70 ferroelectric thin film (piezoelectric thin film Layer), 80 upper electrode film, 90 lead electrode, 100 reservoir, 300 piezoelectric element
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/590,279 US7772748B2 (en) | 2004-07-13 | 2005-06-29 | Composite for forming ferroelectric thin film, ferroelectric thin film, method of manufacturing ferroelectric thin film, and liquid-jet head |
JP2006524543A JP4284557B2 (ja) | 2004-07-13 | 2005-06-29 | 強誘電体薄膜形成用組成物、強誘電体薄膜及び強誘電体薄膜の製造方法並びに液体噴射ヘッド |
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JP2004206225 | 2004-07-13 | ||
JP2004-206225 | 2004-07-13 |
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WO2006006406A1 true WO2006006406A1 (ja) | 2006-01-19 |
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PCT/JP2005/011996 WO2006006406A1 (ja) | 2004-07-13 | 2005-06-29 | 強誘電体薄膜形成用組成物、強誘電体薄膜及び強誘電体薄膜の製造方法並びに液体噴射ヘッド |
Country Status (4)
Country | Link |
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US (1) | US7772748B2 (ja) |
JP (1) | JP4284557B2 (ja) |
CN (1) | CN100481550C (ja) |
WO (1) | WO2006006406A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008120644A (ja) * | 2006-11-14 | 2008-05-29 | Seiko Epson Corp | 強誘電体膜形成用組成物及びその製造方法並びに強誘電体膜の製造方法 |
Families Citing this family (6)
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---|---|---|---|---|
JP5019020B2 (ja) * | 2005-03-31 | 2012-09-05 | セイコーエプソン株式会社 | 誘電体膜の製造方法及び圧電体素子の製造方法並びに液体噴射ヘッドの製造方法 |
JP5585209B2 (ja) * | 2009-05-28 | 2014-09-10 | 株式会社リコー | 電気機械変換素子の製造方法、該製造方法により製造した電気機械変換素子、液滴吐出ヘッド及び液滴吐出装置 |
CN102219507B (zh) * | 2010-04-14 | 2014-12-03 | 三菱综合材料株式会社 | 铁电薄膜形成用组合物、铁电薄膜的形成方法及铁电薄膜 |
JP6075145B2 (ja) * | 2013-03-25 | 2017-02-08 | 三菱マテリアル株式会社 | Pzt系強誘電体薄膜形成用組成物の製造方法並びに該組成物を用いたpzt系強誘電体薄膜の形成方法 |
JP6075152B2 (ja) * | 2013-03-27 | 2017-02-08 | 三菱マテリアル株式会社 | Pzt系強誘電体薄膜形成用組成物の製造方法並びに該組成物を用いたpzt系強誘電体薄膜の形成方法 |
KR102384736B1 (ko) * | 2014-03-27 | 2022-04-07 | 미쓰비시 마테리알 가부시키가이샤 | Mn 도프의 PZT 계 압전체막 형성용 조성물 및 Mn 도프의 PZT 계 압전체막 |
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JP3517876B2 (ja) * | 1998-10-14 | 2004-04-12 | セイコーエプソン株式会社 | 強誘電体薄膜素子の製造方法、インクジェット式記録ヘッド及びインクジェットプリンタ |
-
2005
- 2005-06-29 WO PCT/JP2005/011996 patent/WO2006006406A1/ja active Application Filing
- 2005-06-29 JP JP2006524543A patent/JP4284557B2/ja not_active Expired - Fee Related
- 2005-06-29 CN CNB2005800061038A patent/CN100481550C/zh not_active Expired - Fee Related
- 2005-06-29 US US10/590,279 patent/US7772748B2/en not_active Expired - Fee Related
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JPH08316433A (ja) * | 1995-05-24 | 1996-11-29 | Oki Electric Ind Co Ltd | 半導体装置の強誘電体薄膜の形成方法 |
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Also Published As
Publication number | Publication date |
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CN1922743A (zh) | 2007-02-28 |
US20070190238A1 (en) | 2007-08-16 |
US7772748B2 (en) | 2010-08-10 |
JP4284557B2 (ja) | 2009-06-24 |
CN100481550C (zh) | 2009-04-22 |
JPWO2006006406A1 (ja) | 2008-07-31 |
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