WO2004102275A1 - ネガ型ホトレジスト組成物 - Google Patents
ネガ型ホトレジスト組成物 Download PDFInfo
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- WO2004102275A1 WO2004102275A1 PCT/JP2004/006812 JP2004006812W WO2004102275A1 WO 2004102275 A1 WO2004102275 A1 WO 2004102275A1 JP 2004006812 W JP2004006812 W JP 2004006812W WO 2004102275 A1 WO2004102275 A1 WO 2004102275A1
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- Prior art keywords
- film
- photoresist composition
- negative photoresist
- acid
- pattern
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0382—Macromolecular compounds which are rendered insoluble or differentially wettable the macromolecular compound being present in a chemically amplified negative photoresist composition
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
Definitions
- the present invention relates to a negative photoresist composition, and more particularly, to a negative photoresist composition suitably used for forming an electronic device such as a magnetic head and a GMR device.
- FIGS. 1A to 1E show schematic diagrams (cross-sectional views) of general steps of electrode formation by ion milling and sputtering.
- a magnetic film 2 ′ is laminated on a substrate 1, and a base film (lower film) 3 ′ soluble in an alkali developer and a resist film 4 ′ are further formed thereon. Are sequentially laminated. Then, via a mask pattern from above the resist film 4 ', performing selective exposure using a light such as i-line or K r F excimer laser. Then, when the alkali image is formed, a predetermined range of the resist film 4 (exposed portion if positive, unexposed portion if negative) is alkali-developed to obtain a resist pattern 4 having a substantially rectangular cross section. Is received.
- the underlying film 3, which is located under the alkali-developed portion of the resist film 4, is also developed by the alkali developing solution at the same time, but the underlying film 3 'has higher alkali solubility than the resist film 4'. Therefore, as a result of the alkali development, a pattern 3 for a lift-off having a blade-like cross-section composed of a pattern 3 of a base film 3 having a narrow width as shown in FIG. Is obtained.
- the magnetic film 2 around pattern 5 is etched, and the magnetic film pattern 2 under and around pattern 5 is formed. It is formed.
- an electrode film 6 is formed on the pattern 5 and on the substrate 1 around the magnetic film pattern 2 as shown in FIG. 1D.
- Patent Literature 1 proposes a method of forming a tapered resist pattern using a non-chemically amplified nopolak positive resist.
- An object of the present invention is to apply a method for forming a pattern for lift-off, and to form a negative photoresist composition capable of obtaining good resolution, and more preferably, to form an electronic element such as a magnetic head and a GMR element.
- An object of the present invention is to provide a negative photoresist composition that can be suitably used.
- a first aspect (aspect) of the present invention comprises (A) an alkali-soluble resin, (B) an acid generator that generates an acid upon irradiation with radiation, and (C) a crosslinking agent.
- Negative used for pattern formation method to be processed A negative photoresist composition, wherein the acid cation (B) force cation comprises an onium salt having no hydrophilic group.
- the second aspect (aspect) of the present invention comprises (A) an alkali-soluble resin, (B) an acid generator that generates an acid upon irradiation with radiation, and (C) a cross-linking agent.
- a lower layer film is provided, a photoresist film made of a negative photoresist composition is provided on the lower layer film, and after selectively exposing the photoresist film, it is used in a pattern forming method of simultaneously developing the lower layer film and the photoresist film.
- a negative photoresist composition, wherein the dissolution rate with a developer used for the development treatment is 3.0 to 40.0 nm / sec.
- a third aspect (aspect) of the present invention comprises (A) an alkali-soluble resin, (B) an acid generator that generates an acid upon irradiation with radiation, and (C) a cross-linking agent.
- a fourth aspect (aspect) of the present invention comprises (A) an alkali-soluble resin, (B) an acid generator that generates an acid upon irradiation with radiation, and (C) a cross-linking agent.
- a negative photoresist which has good resolution, can be applied to a method of forming a pattern for lift-off, and can be suitably used for forming an electronic element such as a magnetic head and a GMR element.
- a yarn composition is provided.
- 1A to 1E are schematic cross-sectional views showing a patterning step using a lift-off resist pattern in the order of steps.
- the alkali-soluble resin (A) used in the present invention may be a resin that is soluble in an alkali developing solution or one that becomes insoluble by interaction with a crosslinking agent component. It can be arbitrarily selected from those used as the alkali-soluble resin components. For example, nopolak, polyhydroxystyrene, a copolymer of hydroxystyrene and styrene, and the like can be preferably used.
- the ratio of hydroxystyrene to styrene (hydroxystyrene: styrene) in the copolymerization of hydroxystyrene and styrene is preferably in the range of 90 to 70: 10 to 30.
- the polyhydroxystyrene, 3-4 0 mole 0/0 of hydroxyl hydrogen atoms are replaced by Al force re-insoluble group, may be those Al Chikarari soluble is suppressed.
- the above-mentioned alcohol-insoluble group is a substituent that reduces the solubility of an unsubstituted alcohol-soluble resin, and includes, for example, a tert-butoxycarbonyl group, a tert-amylodicarbyl group and the like.
- There are lower alkyl groups having 1 to 5 carbon atoms such as tertiary alkoxycarbonyl group, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, and isobutyl group.
- lower alkyl groups having 1 to 5 carbon atoms are preferred because they are less susceptible to the surrounding environment in which resist patterning is performed and provide a good resist pattern.
- copolymers of hydroxystyrene and styrene having a dispersity of 1 to 2.5 are particularly preferable because they have an appropriate alkali solubility and can easily adjust the dissolution rate of the negative photoresist composition.
- the alkali-soluble resin (A) preferably has a mass average molecular weight (in terms of polystyrene, the same applies hereinafter) of 100 to: L0000, particularly in the case of a chemically amplified negative resist of KrF and electron beam (EB). Is preferably 20000 to 40000.
- Acid generator component (B) As the acid generator component (B) in the present invention, an ionic salt whose cation has no hydrophilic group is used.
- a well-known anion may be used and is not limited, but fluorinated alkylsulfonic acid ion, which has a strong strength of generated acid, is preferable. That is, it is a fluoroalkyl sulfonate ion in which some or all of the hydrogen atoms of the alkyl group are fluorinated. As the number of carbon atoms in the alkyl group becomes longer and the fluorination rate of the alkyl group (the ratio of fluorine atoms in the alkyl group) becomes smaller, the strength as a sulfonic acid decreases.
- a fluorinated alkyl sulfonic acid in which all of the hydrogen atoms of the group are fluorinated.
- Particularly preferred are perfluoromethanesulfonate ions and perfluoroptanesulfonate ions, which are excellent in acid strength and moderate diffusibility in a resist film.
- a cation which forms a salt with the anion a cation having no hydrophilic group can be selected from those conventionally used in this type of acid generator.
- the hydrophilic group include a hydroxyl group (-OH), a carboxyl group (-COOH), an alkoxy group (-OR), and the like.
- the dissolution rate of a photoresist film formed from the negative photoresist composition in a developing solution can be reduced, and the lower layer film Good resolution of a pattern formed by simultaneously developing the photoresist film can be obtained.
- sulfonic acid salt suitably used as the acid generator component (B) include a sulfonium salt represented by the following general formula (I) and an oxidized salt represented by the following general formula (II). .
- X one represents the Anion, for example C n F 2n + 1 S0 3 - a. (N represents an integer of 1 to 10.)
- 1 ⁇ to 15 each independently represent a substituent having no hydrophilicity, and preferable examples of the substituent are substituents represented by the following chemical formulas (1) to (4).
- Ri R 3 may be different from each other, but are preferably the same.
- R 4 and R 5 may be different from each other, but are preferably the same.
- any one of the salt may be used alone or in combination with the above.
- the content of the component (B) in the negative photoresist composition of the present invention is preferably 0.5 to 20 parts by mass, more preferably 5 to 15 parts by mass, per 100 parts by mass of the component (A). . If the amount of the component (B) is smaller than this, no pattern is formed, and if the amount of the component (B) is larger than this, the depth of focus width may be narrowed or storage stability may be degraded. .
- the cross-linking agent component (C) includes one commonly used as a cross-linking agent for a known chemically amplified negative photoresist, for example, having at least one cross-linking group selected from a hydroxyalkyl group and a lower alkoxyalkyl group. It can be arbitrarily selected from compounds, and there is no particular limitation.
- Examples of such a cross-linking agent include reacting formaldehyde or formaldehyde with a lower alcohol on an amino group-containing compound such as melamine, acetoguanamine, benzoguanamine, urea, ethylene urea, and glycol peril, and converting the hydrogen atom of the amino group to a hydrogen atom.
- an amino group-containing compound such as melamine, acetoguanamine, benzoguanamine, urea, ethylene urea, and glycol peril
- Compounds substituted with a hydroxymethyl group or a lower alkoxymethyl group specifically, hexamethoxymethyl melamine, bismethoxymethyl urea, bismethoxymethyl bismethoxyethylene urea, tetrakismethoxymethyl daryl alcohol, tetrakisbutoxymethyl glycol peryl, etc. Can be mentioned.
- the crosslinking agent component (C) may be used alone, or two or more kinds may be used in combination.
- the content of the component (C) in the negative photoresist composition of the present invention is preferably 3 to 50 parts by mass, more preferably 10 to 20 parts by mass, per 100 parts by mass of the component (A). It is. If the amount of the component (C) is smaller than this, the cross-linking does not proceed sufficiently, and a favorable resist pattern cannot be obtained. If the cross-linking agent (C) component is more than the above range, the storage stability and sensitivity of the resist composition with the lapse of time, such as generation of particles during storage of the resist composition, There is a risk of deterioration.
- the negative photoresist composition according to the present invention is produced by dissolving the component (A), the component (B), the component (C), and other components described below in an organic solvent (D). Can be.
- any solvent can be used as long as it can dissolve each component to form a uniform solution.
- One or more types of conventionally known solvents for chemically amplified resists can be used. Two or more types can be appropriately selected and used.
- Examples of the organic solvent (D) include ketones such as acetone, methyl ethyl ketone, cyclohexanone, methyl isoamyl ketone, and 2-heptanone; ethylene glycolone, ethylene glycolone monoacetate, diethylene glycolone glycol, and ethylene glycol. Noremonoacetate, propylene glycol, propylene glycol monoacetate, dipropylene glycol, or dipropylene glycol monoacetate monomethinoleate, monoethynoleate, monopropynoleate, monobutyl ether, monophenyl ether, etc.
- ketones such as acetone, methyl ethyl ketone, cyclohexanone, methyl isoamyl ketone, and 2-heptanone
- ethylene glycolone ethylene glycolone monoacetate, diethylene glycolone glycol, and ethylene glycol. Noremonoacetate, propylene glycol, propylene
- esters such as E Toki ciprofibrate acid Echiru.
- These organic solvents may be used alone or as a mixed solvent of two or more.
- particularly preferred solvents include ethylene glycol, diethylene glycolone, propylene dariconeole and dipropylene glycolone monomethyl ether, monoethylenole ether, monopropynoleatel, monobutyl ether or monophenyl ethereol.
- examples thereof include a single solvent containing at least a hydrophilic solvent such as methyl lactate and ethyl lactate, or a mixed solvent with the above-mentioned other solvents.
- the content of the organic solvent (D) in the negative photoresist composition of the present invention is set so that the solid concentration of the resist composition is 3 to 30% by mass. It is preferable to set appropriately according to the conditions.
- the solid content refers to the sum of (A) to (C) and other components described below. [Other ingredients]
- a resist pattern shape in addition to the component (A), the component (B) and the component (C), a resist pattern shape, a leaving-over time, a post-exposure stability, and a resist pattern shape may be further added, if desired. of the latent image formed by the pattern wise exposure of the resist layer, etc. in order to improve the sensitivity and substrate dependency due to the addition of the amine (E) as a quencher component and the addition of the (E) component.
- an organic acid (F) such as an organic carboxylic acid or an oxo acid of phosphorus or a derivative thereof can be further contained as an optional component.
- an amine is suitably used as the component (E).
- a secondary aliphatic amine ⁇ a tertiary aliphatic amine can be contained.
- the aliphatic amine refers to an alkyl or alkyl alcohol amine having 10 or less carbon atoms.
- the secondary and tertiary amines include trimethylamine, getylamine, triethylamine, and di- n.
- —Propylamine, tree n Provides a proliferative amine, a proliferative amine, a proliferative amine, a proliferamine, aproliferative, acetiopropynoleamine, triptinoleamine, tripentinoleamine, trioctylamine, diethanolamine, triethanolamine, etc.
- Tertiary aliphatic amines having an alkyl group of the number 7 to 10 are preferred, and among them, trioctylamine is most preferred.
- the component (E) is preferably used in an amount of 0.01 to 1.0 part by mass per 100 parts by mass of the component (A).
- the organic carboxylic acid of the component (F) for example, malonic acid, citric acid, malic acid, succinic acid, benzoic acid, salicylic acid and the like are suitable.
- the phosphorus oxo acid or its derivative include phosphoric acid such as phosphoric acid, phosphorous acid, phosphoric acid n-butyl ester, and diphenyl phosphate ester, and derivatives such as phosphorous acid or their ester, Phosphonic acid and derivatives such as phosphonic acid such as phosphonic acid, dimethyl phosphonate, phosphonic acid-di-n-butynoleestenolate, phenyl / lephosphonic acid, diphenyl phosphonate / ester, dibenzyl phosphonate, etc.
- phosphinic acids such as phosphinic acid and phenylphosphinic acid, and derivatives such as esters thereof. Among them, phenylphosphonic acid is particularly preferable. Is preferred
- the component (F) is preferably used in a ratio of 0.01 to 1.0 part by mass per 100 parts by mass of the component (A).
- the negative photoresist composition according to the present invention may further contain additives that are miscible as required, for example, an additional resin for improving the performance of the resist film, a surfactant for improving coating properties, and a plasticizer. , A stabilizer, a coloring agent, an antihalation agent and the like can be appropriately added and contained.
- the solubility of a photoresist film formed from the negative photoresist composition in a developing solution is slowed by using an onium salt having a cationic group having no hydrophilic group. be able to. Its solubility can be evaluated by the dissolution rate of a developing solution used for developing a photoresist film comprising the negative photoresist composition.
- the dissolution rate of a conventional negative photoresist is about 500 nm / sec (seconds), but such a photoresist having a high dissolution rate has insufficient resolution ⁇ .
- the dissolution rate can be reduced by using the specific onium salt described above, whereby the resolution is improved and a good pattern shape is obtained.
- the dissolution rate of the negative photoresist composition of the present invention is preferably from 3.0 to 40.0 nm / sec, more preferably 7.0-13. On m / sec, the most preferable range. Is 8.0 to 10.0 O nm / sec.
- Examples of the developing solution include a concentration of 2.38% by mass of 1 ⁇ [(tetramethylammonium hydroxide), trimethylmonoethylammonium hydroxide, and dimethylethylammonium hydroxide.
- an aqueous solution of tetramethylammonium hydroxide is preferred.
- the value of the dissolution rate of the negative photoresist composition in this specification is a value specifically determined as follows. First, the silicon wafer is placed on a silicon wafer. A photoresist composition is applied and pre-betaed to form a photoresist film.
- the wafer is immersed in a 23 ° (:, 2.38% by mass aqueous TMAH solution (developer). The time required for the photoresist film to completely dissolve is measured. Measure the thickness of the photoresist film per unit time (nm / sec).
- the amount of loss of the photoresist film thus determined is the dissolution rate of the photoresist composition in the present specification.
- the resist composition of the present invention can be suitably used for forming a pattern for ionic etching in which the film to be etched is a magnetic film.
- Is an ionic etching include anisotropic I 1 Raw etching such as ion milling.
- Pattern formation using the negative photoresist composition of the present invention is carried out in the same manner as in the procedure shown in FIGS. 1A to 1E described above by providing a lower layer film by a lift-off method and a non-lift-off method. It can be done in no way. A typical lift-off method is described below.
- the substrate 1 is not particularly limited, and a silicon wafer or the like is used.
- the substrate 1 may be subjected to a surface modification treatment using a silane coupling agent such as hexamethyldisilazane (HMDS), for example.
- HMDS hexamethyldisilazane
- the magnetic material used for the magnetic film 2 on the substrate 1 may be a known magnetic material.
- a magnetic material containing elements such as Ni, Co, Cr, and Pt is used.
- a coating solution for forming a 2 ′ base film (lower film) on the magnetic film for example, polymethylglutarimide (hereinafter abbreviated as PMGI) manufactured by Shipley Co., Ltd. is used. It is applied by a coater and dried to form an underlayer film 3.
- the thickness of the lower layer film 3 is 10 to 10 nm, preferably about 30 to 80 nm.
- the lower layer film 3 and the upper resist film 4 ′ are formed by applying the negative resist composition of the present invention using a spinner or the like and then performing pre-beta (PAB treatment).
- Prebaking conditions vary depending on the type of each component in the composition, the mixing ratio, the coating film thickness, etc., but are usually 70 to: L 50 ° C, preferably 80 to 140 ° C. And 0.5 to 60 About a minute.
- the thickness of the resist film 4 ' is preferably from 500 to 1000 nm, and more preferably from about 100 to 2000 nm.
- the negative photoresist composition according to the present invention has sensitivity at 248 nm, it can be exposed to a KrF excimer laser, has sensitivity to electron beams, and is applicable to electron beam lithography. .
- the selective exposure of the resist film 4 ′ may be performed using a KrF excimer laser through a mask, may be performed using an electron beam (EB), or may be performed by combining both. Good. Particularly, a fine pattern is preferably drawn directly by an electron beam.
- the selective exposure in the present invention includes both exposure through a mask and drawing. Also, for example, in the case of a pattern shape in which a relatively wide portion and a portion with a small line width coexist, a wide portion is selectively exposed using a KrF excimer laser to reduce the line width. It is also possible to draw the part directly with an electron beam.
- the heating conditions in the PEB (post-exposure baking) process after the exposure process vary depending on the type, blending ratio, coating film thickness, etc. of each component in the composition, but are usually 80 to 160 ° C, and are preferably Is 90 to 130 ° C. for about 0.5 to 10 minutes.
- a predetermined range (unexposed portion) of the resist film 4 is developed by performing a developing process using the above-described developer, and the resist pattern 4 is formed at the same time.
- the underlying film (underlayer film) 3 ′ located under the exposed portion of the resist film 4, under the edge of the unexposed portion is also removed together with the alkali developing solution, and the lift-off pattern in the form of a cross-section is used. 5 is obtained.
- the development time can be set so as to obtain the desired resist pattern shape.However, if it is too short, the pattern may be skirted, or undissolved portions may be left unexposed or in other portions. If the length is too long, the film will be reduced. Therefore, it is preferable that the length be in the range of 25 to 180 seconds, and it is most preferable that the length be in the range of 30 to 120 seconds.
- the negative photoresist composition of the present invention a cation having no hydrophilic group is used as the acid generator (B) to suppress the alkali solubility of the photoresist film.
- the resolution is improved, and the negative photoresist composition is improved.
- the dissolution rate of the lower layer film below the resist film can be suppressed.
- the width of the pattern of the lower layer film is narrower than the resist pattern of the resist film (upper layer).
- the width of the lower layer is narrowed, the width of the pattern of the lower layer film may be too narrow and the pattern may collapse, but according to the present invention, the dissolution rate of the lower layer film is suppressed, so that the lower layer is developed during the development of the upper layer. It is possible to prevent the layer film from being excessively dissolved and the width from becoming too small, and to cope with miniaturization of the resist pattern (upper layer) while suppressing the occurrence of pattern collapse.
- the development margin of the lower layer film soluble in the developer is improved. That is, the development time (development margin) for obtaining the width of this range can be prolonged with respect to the preferable range of the pattern width of the lower layer film.
- the sensitivity margin can be effectively improved, and the rectangularity of the resist pattern can also be improved.
- a lift-off resist pattern having high resolution can be formed, and the in-plane uniformity of the pattern dimension can be improved.
- the dissolution rate of the negative photoresist composition of the present invention in a developer is suppressed to about 3.0 to 4.0 nm / sec
- the resist film (upper layer) made of the negative photoresist composition is developed.
- the rate at which the underlying film dissolves is suppressed. Therefore, it is possible to prevent the lower layer film from being excessively dissolved during the development of the upper layer and to prevent the width from becoming too small, and to cope with the miniaturization of the resist pattern (upper layer) while suppressing the occurrence of pattern collapse. it can.
- component (D) The following components (A), (B), (C), (E), (F), and other components are uniformly dissolved in component (D) to form a negative photoresist composition. Prepared.
- the component (A) was used and the structural unit 80 mole 0/0 derived from a hydroxystyrene, a copolymer 100 parts by weight of the dispersion degree 2.0 consisting of structural units 20 mole% derived from styrene.
- the mass average molecular weight of this component (A) was 3,600.
- component (B) 3.0 parts by mass of triphenylsulfo-dimethyltrifluoromethanesulfonate was used based on 100 parts by mass of the component (A).
- component (C) bismethoxymethyl urea (product name: N-8314, manufactured by Sanwa Chemical Co., Ltd.) was used in an amount of 10.0 parts by mass based on 100 parts by mass of the component (A).
- propylene glycol monomethyl ether was used in an amount of 1800 parts by mass based on 100 parts by weight of the component (A).
- a fluorine-based surfactant product name: XR104, manufactured by Dainippon Ink and Chemicals, Inc.
- the dissolution rate of the obtained negative resist composition was 8.0 nm / sec. ⁇ Formation of resist pattern and its evaluation>
- PMG I product name: SFG 2F, manufactured by MicroChem; lower layer material capable of being developed by Alchemy; polymethyl glutarimide
- HMDS polymethyl glutarimide
- the negative resist composition prepared above is applied by a spinner, A resist film having a thickness of 200 nm was formed by prebaking at 110 ° C for 90 seconds.
- the obtained resist pattern was in the shape of a cross section, and no pattern collapse occurred. Furthermore, the sensitivity margin was wide, the film thickness of the resist pattern did not decrease, and the rectangularity was good.
- the ultimate resolution of the isolated line was 50 nm.
- the component is 85 moles of a structural unit derived from hydroxystyrene. / 0, with copolymer 100 parts by weight of the dispersion degree 2.0 consisting of structural units 15 mole 0/0 derived from styrene.
- the mass average molecular weight of this component (A) was 3,600.
- an acid generator (NDS-105, manufactured by Midori Kagaku) represented by the following formula (III) as an onium salt having a hydrophilic group is used, based on 100 parts by mass of the component (A). 1.5 parts by mass were used.
- the components (C), (D), (E) and (F) had the same composition as in Example 1.
- 0.1 part by mass of a fluorosurfactant product name XR104, manufactured by Dainippon Ink and Chemicals, Inc. was used.
- the dissolution rate of the obtained negative resist composition was 50 nm / sec.
- a resist pattern was formed in the same manner as in Example 1.
- the obtained isolate line was 250 nm. Further, the obtained resist pattern had a large film loss and a small sensitivity margin.
- a negative resist composition was prepared in the same manner as in Example 1, except that the component (B) was changed to 1.0 part by mass of ⁇ - (methylsulfonyloximino) -p-methoxyphenylacetonitrile.
- the dissolution rate of the obtained negative resist composition was 50 nmZZ sec.
- a resist pattern was formed in the same manner as in Example 1.
- the resulting isolate line was 250 nm. Further, the obtained resist pattern had a large film loss and a small sensitivity margin.
- the present invention provides a negative photoresist composition which has good resolution, is applicable to a method of forming a pattern for lift-off, and can be suitably used for forming an electronic element such as a magnetic head and a GMR element. Is very useful in industry.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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GB0521650A GB2415790C (en) | 2003-05-16 | 2004-05-13 | Negative photoresist composition |
US10/556,297 US20060281023A1 (en) | 2003-05-16 | 2004-05-13 | Negative photoresist composition |
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JP2003-138873 | 2003-05-16 | ||
JP2003138873 | 2003-05-16 | ||
JP2003162060A JP3710795B2 (ja) | 2003-05-16 | 2003-06-06 | ネガ型ホトレジスト組成物 |
JP2003-162060 | 2003-06-06 |
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WO2004102275A1 true WO2004102275A1 (ja) | 2004-11-25 |
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US (1) | US20060281023A1 (ja) |
JP (1) | JP3710795B2 (ja) |
GB (1) | GB2415790C (ja) |
TW (1) | TWI304920B (ja) |
WO (1) | WO2004102275A1 (ja) |
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JP4322097B2 (ja) * | 2003-11-14 | 2009-08-26 | 東京応化工業株式会社 | El表示素子の隔壁、およびel表示素子 |
JP5439030B2 (ja) * | 2009-05-18 | 2014-03-12 | 信越化学工業株式会社 | ネガ型レジスト組成物の検査方法及び調製方法 |
JP5584573B2 (ja) | 2009-12-01 | 2014-09-03 | 信越化学工業株式会社 | ネガ型レジスト組成物及びパターン形成方法 |
JP2012208396A (ja) * | 2011-03-30 | 2012-10-25 | Fujifilm Corp | レジストパターンの形成方法およびそれを用いたパターン化基板の製造方法 |
CN104885010B (zh) | 2013-01-09 | 2019-06-04 | 日产化学工业株式会社 | 抗蚀剂下层膜形成用组合物 |
CN111512228A (zh) | 2017-12-28 | 2020-08-07 | 默克专利有限公司 | 包含碱溶性树脂和交联剂的负型剥离抗蚀剂组合物以及在衬底上制造金属膜图案的方法 |
KR20220011690A (ko) | 2019-05-20 | 2022-01-28 | 메르크 파텐트 게엠베하 | 알칼리 가용성 수지 및 광 산 발생제를 포함하는 네거티브 톤 리프트 오프 레지스트 조성물, 및 기판 상에 금속 필름 패턴을 제조하는 방법 |
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JP2000089471A (ja) * | 1998-09-14 | 2000-03-31 | Sharp Corp | レジストパターンの形成方法 |
JP2001183832A (ja) * | 1999-12-24 | 2001-07-06 | Jsr Corp | ネガ型感放射線性樹脂組成物 |
JP2002131909A (ja) * | 2000-10-23 | 2002-05-09 | Fujitsu Ltd | 電離放射線レジスト組成物とその使用方法 |
JP2003076019A (ja) * | 2001-06-18 | 2003-03-14 | Jsr Corp | ネガ型感放射線性樹脂組成物 |
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US4567132A (en) * | 1984-03-16 | 1986-01-28 | International Business Machines Corporation | Multi-level resist image reversal lithography process |
US5206116A (en) * | 1991-03-04 | 1993-04-27 | Shipley Company Inc. | Light-sensitive composition for use as a soldermask and process |
JP3637723B2 (ja) * | 1997-03-12 | 2005-04-13 | Jsr株式会社 | ネガ型感放射線性樹脂組成物 |
US6638684B2 (en) * | 1999-08-31 | 2003-10-28 | Tokyo Ohka Kogyo Co., Ltd. | Photosensitive laminate, process for forming resist pattern using same and positive resist composition |
US6815358B2 (en) * | 2001-09-06 | 2004-11-09 | Seagate Technology Llc | Electron beam lithography method for plating sub-100 nm trenches |
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2003
- 2003-06-06 JP JP2003162060A patent/JP3710795B2/ja not_active Expired - Lifetime
-
2004
- 2004-05-13 GB GB0521650A patent/GB2415790C/en not_active Expired - Fee Related
- 2004-05-13 TW TW093113498A patent/TWI304920B/zh not_active IP Right Cessation
- 2004-05-13 US US10/556,297 patent/US20060281023A1/en not_active Abandoned
- 2004-05-13 WO PCT/JP2004/006812 patent/WO2004102275A1/ja active Application Filing
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JP2000089471A (ja) * | 1998-09-14 | 2000-03-31 | Sharp Corp | レジストパターンの形成方法 |
JP2001183832A (ja) * | 1999-12-24 | 2001-07-06 | Jsr Corp | ネガ型感放射線性樹脂組成物 |
JP2002131909A (ja) * | 2000-10-23 | 2002-05-09 | Fujitsu Ltd | 電離放射線レジスト組成物とその使用方法 |
JP2003076019A (ja) * | 2001-06-18 | 2003-03-14 | Jsr Corp | ネガ型感放射線性樹脂組成物 |
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TW200426508A (en) | 2004-12-01 |
GB2415790C (en) | 2007-09-14 |
JP2005037414A (ja) | 2005-02-10 |
JP3710795B2 (ja) | 2005-10-26 |
GB2415790A (en) | 2006-01-04 |
GB2415790B (en) | 2007-08-08 |
TWI304920B (en) | 2009-01-01 |
US20060281023A1 (en) | 2006-12-14 |
GB0521650D0 (en) | 2005-11-30 |
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