WO1999032935A1 - Composition a base de resine photosensible et procede de fabrication correspondant - Google Patents
Composition a base de resine photosensible et procede de fabrication correspondant Download PDFInfo
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- WO1999032935A1 WO1999032935A1 PCT/JP1998/005597 JP9805597W WO9932935A1 WO 1999032935 A1 WO1999032935 A1 WO 1999032935A1 JP 9805597 W JP9805597 W JP 9805597W WO 9932935 A1 WO9932935 A1 WO 9932935A1
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- WIPO (PCT)
- Prior art keywords
- resin composition
- photosensitive resin
- wavelength
- photoactive
- photoactive component
- Prior art date
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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
- G03F7/022—Quinonediazides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0033—Additives activating the degradation of the macromolecular compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
- C08K5/23—Azo-compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
- C08K5/27—Compounds containing a nitrogen atom bound to two other nitrogen atoms, e.g. diazoamino-compounds
- C08K5/28—Azides
-
- 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
- G03F7/022—Quinonediazides
- G03F7/0226—Quinonediazides characterised by the non-macromolecular additives
-
- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
- G03F7/203—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure comprising an imagewise exposure to electromagnetic radiation or corpuscular radiation
Definitions
- the present invention relates to a photosensitive resin composition (resist) suitable for finely processing a semiconductor using ultraviolet light or far ultraviolet light (including excimer laser), a method for producing the same, and a pattern forming method using the same.
- a photosensitive resin composition resist
- ultraviolet light or far ultraviolet light including excimer laser
- a composition containing an alkali-soluble nopolak resin and a diazonaphthoquinone derivative is known.
- This photosensitive resin composition utilizes the fact that the diazonaphthoquinone group is decomposed by irradiation with light having a wavelength of 300 to 500 nm to form a carboxyl group, and becomes alkali-soluble from insoluble. It is used as a positive resist.
- nopolak resin / diazonaphthoquinone-type positive resist which has been used in the manufacture of semiconductor integrated circuits using g-line and i-line, has a KrF excimer laser and Sensitivity and resolution are greatly reduced even with A r F excimer laser And not practical.
- microfabrication using KrF or ArF excimer lasers has many technical issues to be solved in terms of light source, exposure equipment such as lens system, and selection of photosensitive material (resist). Not only that, capital expenditures for applying it to actual semiconductor production will be enormous.
- an object of the present invention is to provide a photosensitive resin composition which can greatly improve sensitivity and resolution even with existing equipment (especially an exposure system), a method for producing the same, and a method for forming a pattern. It is another object of the present invention to provide a photosensitive resin composition which can significantly improve a pattern profile and a focus margin, a method for producing the same, and a pattern forming method. Disclosure of the invention
- the present inventors have conducted intensive studies to achieve the above object, and as a result, combined a first photoactive component having an absorption wavelength ⁇ 1 and a second photoactive component having strong absorption at an absorption wavelength ⁇ 2. After pattern exposure with a light beam of wavelength ⁇ 1 or ⁇ 2 through a mask, full exposure with a light beam of wavelength ⁇ 2 or ⁇ 1, the entire surface can be used to make the surface of the resist film difficult to dissolve or solubilize. As a result, the present inventors have found that a high-resolution pattern having a high ⁇ value can be formed with high precision, and the present invention has been completed.
- the photosensitive resin composition of the present invention is a photosensitive resin composition composed of a base resin and a photoactive component, wherein the photoactive component has an absorption range at different wavelengths ⁇ 1 and ⁇ 2. It has a plurality of photoactive components.
- the base resin may be a nopolak resin or a polybiphenol polymer, and the photoactive component has a first photoactive component having an absorption band at a wavelength ⁇ and a second photoactive component having an absorption band at a wavelength ⁇ 2.
- the first and second photoactive components are usually substantially inactive with respect to the absorption wavelength of the other component.
- the first photoactive component and the second photoactive component are diazobenso'quinone derivatives And / or a combination of a diazonaphthoquinone derivative and an azide compound, a photoacid generator, or a photoacid generator and a crosslinking agent, or a combination of an azide compound and a photoacid generator.
- the method of the present invention also includes a method for producing a photosensitive resin composition in which a base resin and a plurality of photoactive components having absorption bands at different wavelengths ⁇ and ⁇ 2 are mixed.
- the method of the present invention further comprises: exposing the photosensitive resin composition to a light beam of one of wavelengths ⁇ 1 and ⁇ 2 to form a pattern;
- the forming method is also included.
- the “photoactive component” is a component called a photosensitizer, a sensitizer, etc., which is activated or excited by a light beam and participates in pattern formation by a light reaction.
- “Wavelength” or “absorption wavelength” in photoactive component ⁇ 1, ⁇ 2 means that the photoactive component is exposed to light of wavelength ⁇ 1, ⁇ 2, and is exposed to light, activated or excited to react to light. Mean the wavelengths involved.
- the “absorption region” of the photoactive component means an absorption wavelength region having an extinction coefficient of 1 or more (preferably 10 or more) with respect to the exposure wavelength.
- the above-mentioned “wavelength” or “absorption wavelength” ⁇ , ⁇ 2 means the absorption region on the longest wavelength side among the absorption regions.
- nopolak resin and polyvinyl phenol are used as base resins.
- a knol-based polymer can be used.
- the nopolak resin an alkali-soluble nopolak resin is usually used.
- a conventional nopolak resin used in the resist field can be used.
- the novolac resin can be obtained by condensing a phenol having at least one phenolic hydroxyl group in the molecule with an aldehyde in the presence of an acid catalyst.
- phenols include phenol, o-, m- or p-cresol, 2, 5-, 3, 5- or 3,4-xylenol, 2, 3, 5-trimethylphenol, ethyl phenol,
- examples include propyl phenol, butyl phenol, 2-t-butyl-5-methylphenol, C 4 alkyl phenols, dihydroxybenzene, and naphthols.
- the aldehydes include aliphatic aldehydes such as formaldehyde, acetoaldehyde, and darioxal, and aromatic aldehydes such as benzaldehyde and salicylaldehyde.
- the phenols can be used alone or in combination of two or more, and the aldehydes can also be used alone or in combination of two or more.
- Acid catalysts include inorganic acids (such as hydrochloric acid, sulfuric acid, and phosphoric acid), organic acids (such as oxalic acid, acetic acid, and p-toluenesulfonic acid), and organic acid salts (such as divalent metal salts such as zinc acetate). And the like.
- the condensation reaction can be carried out in a conventional manner, for example, at a temperature of about 60 to 120 for about 2 to 30 hours. The reaction may be carried out in bulk or in a suitable solvent.
- the type of the polyvinyl phenol polymer is not particularly limited as long as it is a polymer having vinyl phenol as a structural unit, and a homo- or copolymer of vinyl phenol or a derivative thereof, or another copolymerizable monomer And the like.
- Poribinirufu phenol based polymer, as Les protecting group Shi preferred to use protecting some or all of the phenolic hydroxyl group containing a protecting group, for example, alkyl (C -! 6 alkyl groups, preferably C!
- Cycloalkyl group eg, cyclohexyl group
- aryl group eg, 2,4-dinitrophenyl group
- aralkyl group benzyl group, 2,6-dichlorobenzyl group, 2-nitro group
- a benzyl group which may have a substituent such as a benzyl group or a triphenylmethyl group
- a tetrahydroviranyl group a non-polymerizable acryl group [an acetyl, propionyl, isopropionyl, butyryl, isovaleryl, etc.
- Ashiru group preferably C 2 - 6 Ashiru groups, in particular C 2 _ 4 aliphatic Ashiru group
- an aromatic Ashiru groups such Benzoiru groups (especially C 7 - 13 etc. aromatic Ashiru group)
- Kishirukaruponiru cycloheptane alicyclic Ashiru group such group, an alkoxycarbonyl group (e.g., Cj- 6 alkoxy Ichiriki Ruponiru group such as t one butoxide deer Lupo group), ⁇ La Kill O alkoxycarbonyl group (e.g., benzyl O alkoxycarbonyl group), a substituent (C _ 6 Al kill group, C 6 -!
- Rubamoiru group optionally having (e.g., force Rubamoiru , methylcarbamoyl, Echirukarubamo I le, etc. phenylene carbamoyl group), di-C! _ 4 alkyl phosphine Ino Chioiru group, such as di ⁇ reel phosphide Rickioiru group.
- Preferred protecting groups include an alkyl group, a non-polymerizable acyl group (especially an aliphatic acyl group), an alkoxycarbonyl group, an optionally substituted functional group, and the like.
- the proportion of the protective group contained in the polyvinylphenol-based polymer is, for example, 10 to 100 mol%, preferably 20 to 70 mol% (for example, 2 to 100 mol%) of the hydroxyl group in the polymer. 0 to 50 mol%).
- the molecular weight of the polyvinylphenol-based polymer is not particularly limited, but may be, for example, a weight-average molecular weight of 100 to 500, preferably 200 to 300 (for example, 5,000 to 100,000).
- a feature of the present invention resides in that the photoactive component is composed of a plurality of photoactive components having absorption bands at different wavelengths ⁇ and ⁇ 2, and the photoactive component has an absorption band at wavelength ⁇ 1 ⁇ .
- the first photoactive component and the absorption band at wavelength ⁇ 2 And a second photoactive component.
- one component is practically inert to the absorption wavelength of the other component, and advantageously does not participate in the photoreaction.
- the second photoactive component has no absorption or is substantially inert to the absorption wavelength of the first photoactive component.
- the first photoactive component desirably has no absorption or is substantially inert to the absorption wavelength of the second photoactive component.
- the absorption wavelength ⁇ 1 of the first photoactive component and the absorption wavelength ⁇ 2 of the second photoactive component can be selected according to the wavelength of the exposure source, but usually 30 to 450 nm It is advantageous that the distances are preferably about 50 to 400 nm, more preferably about 70 to 350 nm. When an existing practical exposure system is used, the wavelengths ⁇ 1 and ⁇ 2 are advantageously separated by about 100 to 300 nm (for example, 100 to 280 nm). It is.
- One of the first photoactive component and the second photoactive component usually has an absorption wavelength ⁇ 1 of 300 to 550 nm, preferably 320 to 530 nm (for example, 3
- the other component generally has an absorption wavelength ⁇ 2 of 100 to 350 nm, preferably 120 to 320 nm (for example, 150 to 450 nm). About 300 nm).
- the second photoactive component usually has an absorption wavelength on the shorter wavelength side than the first photoactive component in many cases, and the absorption wavelength ⁇ 1 of the first photoactive component is usually 300 to 5 It can be selected from about 50 nm, and the absorption wavelength ⁇ 2 of the second photoactive component can usually be selected from a range of about 100 to 350 nm.
- the photoactive component advantageously has a high extinction coefficient for the wavelength of the exposure.
- the molecular extinction coefficient ⁇ of the second photoactive component for the wavelength ⁇ ⁇ ⁇ or ⁇ 2 is usually 1 ⁇ 10 3 to 5 ⁇ 10 5 , preferably 5 ⁇ 10 3 to 3 ⁇ 10 5 , more preferably 1 X 1 0 4 ⁇ 3 X 1 0 5 about.
- the first photoactive component and the second active component may be selected from conventional photosensitizers and sensitizers, for example, diazonium salts (diazonium), depending on the type of the photosensitive resin (positive type or negative type). Salts, tetrazonium salts, polyazonium salts), quinonediazides (diazobensoquinone derivatives, diazonaphthoquinone derivatives, etc.), azide compounds, pyrylium salts, thiapiridium salts, photodimerizing sensitizers or photopolymerization initiators [For example, ketones (anthraquinone, benzophenone or a derivative thereof), benzoin ether or a derivative thereof, etc.], and an acid generator.
- diazonium salts diazonium salts (diazonium)
- salts salts, tetrazonium salts, polyazonium salts), quinonediazides (diazobensoquinone derivatives
- the first and second photoactive components are determined according to the type of the photosensitive resin, the absorption area of the pattern exposure and the overall exposure, and It can be appropriately combined with a photosensitizer and a sensitizer (particularly, quinonediazides such as diazobenzoquinone and diazonaphthoquinone, an azide compound, and an acid generator). More specifically, when a nopolak resin is used as the base resin, the first photoactive component can be composed of, for example, a diazobensoquinone derivative and a di- or diazonaphthoquinone derivative.
- the photoactive component can be composed of an azide compound, a photoacid generator, or a photoacid generator and a crosslinking agent.
- a compound having strong absorption at a wavelength ⁇ or ⁇ 2 (having a large absorbance at ⁇ 1 or ⁇ 2) is useful.
- the diazobenzoquinone derivative or diazonaphthoquinone derivative may be, for example, either ⁇ - or ⁇ -quinonediazide, but is usually ⁇ -quinonediazide (ortho form).
- the diazobensoquinone derivative can be obtained by reacting 1,2-benzoquinone-141-sulfonyl with a hydroxyl group-containing compound, and the diazonaphthoquinone derivative is 1,2-naphthoquinone-4-sulfonyl. Alternatively, it can be obtained by reacting 1,2-naphthoquinone-15-sulfonyl with a hydroxyl group-containing compound.
- the hydroxyl group-containing compound may be a monohydric or polyhydric alcohol, and is a phenol having at least one hydroxyl group.
- the phenols include hydroquinone, resorcinol, fluorodarcine, alkyl gallate, 2,4-dihydroxybenzophenone, 2,3,4-trihydroxybenzophenone, and tetrahydroxybenzophenone, in addition to the above-mentioned phenols.
- the azide compound is usually an aromatic azide compound.
- the azide compound include a monoazide compound [for example, 2,6-dichloro mouth—412 traw 1—azidobenzene, N— (4-azidophenyl) —N-phenylamine, N— (4-azidophenyl) 1-N- (4-methoxyethoxy) amine, 1-azidopyrene, etc.), diazide compounds [eg, 3,3'-dimethyl-4,4'-diazidobiphenyl, 3,3'-dimethoxy-1,4, 4'—diazidobiphenyl, 4, 4 ' Diazidodiphenylmethane, 4,4'diazido3,3'-dichlorodiphenylmethane, 4,4'-diazidodiphenylether, 4,4'-diazidodiphenylsulfone, 3,3'- Diazidodip
- the azide compound preferably generates nitrogen gas efficiently by light irradiation to generate nitrene.
- the diazide compound is preferably used. preferable.
- Acid or Lewis acid can be used.
- the following sulfonic acid esters and Lewis acid salts can be used.
- the acid generator generates an acid upon irradiation with light to promote crosslinking of the base resin (for example, when the base resin is a nopolak resin), or to deprotect protective groups at the time of pattern formation exposure (for example, when the base resin is a polyvinyl phenol resin). This is effective for making the pattern-forming portion of the base resin (positive resin) easily soluble in aluminum.
- cross-linking agents that promote the cross-linking of the base resin by an acid generated from the acid generator can be used, and include, for example, an amino resin, particularly a melamine derivative.
- Melamine derivatives include methylol melamine (hexamethylol melamine, etc.), alkoxymethyl melamine (alkoxymethyl melamine, such as bexamethoxymethyl melamine, etc.), condensates thereof, and co-condensation components (urea, benzoguanamine, etc.) And the like.
- the first photoactive component can be composed of an azide compound
- the second photoactive component can be composed of a photoacid generator.
- the azide compound the above-mentioned azide compound and the like can be used.
- the photoacid generator the above-mentioned acid generator and the like can be used.
- the amount of the first photoactive component used is, for example, 0.01 to 100 parts by weight (for example, 1 to 100 parts by weight) based on 100 parts by weight of the base resin, depending on the type of the base resin and the photoactive component. 100 parts by weight), preferably 0.05 to: 100 parts by weight (for example, 100 to 100 parts by weight), more preferably 0.1 to 80 parts by weight (for example, 20 to 100 parts by weight). 80 parts by weight).
- the amount of the second photoactive component to be used is, for example, 0.0001 to 100 parts by weight of the base resin and: L 0 parts by weight (for example, 0.001 to 10 parts by weight), preferably 0.005 to 7 parts by weight (for example, 0.05 to 7 parts by weight), more preferably 0.001 to 5 parts by weight (for example, , 0.1 to 5 parts by weight), and especially about 0.001 to 2 parts by weight.
- L 0 parts by weight for example, 0.001 to 10 parts by weight
- preferably 0.005 to 7 parts by weight for example, 0.05 to 7 parts by weight
- more preferably 0.001 to 5 parts by weight for example, 0.1 to 5 parts by weight
- the azide compound is used in an amount of 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, and more preferably 0 to 100 parts by weight of the base resin (nopolak resin). It is about 1 to 2 parts by weight (for example, 0:! To 1.5 parts by weight).
- the acid generator is used in an amount of 0.01 to 3 parts by weight (for example, 0.01 to 1 part by weight), preferably 0.02 to 2 parts by weight, based on 100 parts by weight of the base resin.
- it is about 0.02 to 1 part by weight), more preferably about 0.02 to 1 part by weight (0.02 to 0.5 part by weight).
- 0.05 to 5 parts by weight for example, 0.05 to 3 parts by weight
- 0.1 to 3 parts by weight for example, 0.1 to 1.5 parts by weight
- the amount of the azide compound used is 0.01 to 5 parts by weight (for example, 0 to 5 parts by weight) per 100 parts by weight of the base resin. 0.5 to 3 parts by weight), preferably about 0.1 to 2 parts by weight, more preferably about 0.1 to 1 part by weight, and the amount of the acid generator used is 0.001 to 1 part by weight. It is preferably about 0.005 to 0.1 part by weight, and about 0.001 to 0.01 part by weight.
- the photosensitive resin composition is different from the base resin in wavelengths ⁇ 1 and ⁇ 2. It can be produced by mixing with a plurality of photoactive components having an absorption region. At that time, if an existing photosensitive resin composition that already contains the first or second photoactive component is used, the addition of the second photoactive component or the first photoactive component only causes the present invention.
- the photosensitive resin composition of the present invention can be obtained.
- a soluble component such as a soluble resin, a dye, a solvent, and the like may be added to the photosensitive resin composition.
- the solvent include hydrocarbons, halogenated hydrocarbons, alcohols, esters, ketones, ethers, cellosolves, carbitols, glycol ether esters (cellosolve acetate, propylene glycol monomethyl ether). And mixed solvents of these.
- the base resin a resin component that has been previously separated and refined based on the molecular weight or the like may be used, and the photosensitive resin composition may be free of impurities by a conventional separation and purification means such as a filter. .
- the photosensitive resin composition is applied to a substrate (silicon wafer or the like), dried, and then applied to a coating film (resist film) through a predetermined mask.
- a high-resolution pattern can be formed by exposing a light beam of one wavelength to form a pattern, then exposing the entire surface with a light beam of the other wavelength, and developing.
- a heating means such as a hot plate is used to evaporate the solvent at an appropriate temperature (for example, 80 to 100) for an appropriate time. (For example, 1 to 2 minutes) You may soft bake.
- various wavelengths of light can be used depending on the type of base resin, and may be a single wavelength or a composite wavelength.
- These exposures typically include g-line (436 nm), i-line (365 nm), excimer laser (eg, XeC1 (308 nm), KrF (248) nm), K r C l (2 2 2 n m), A r F (193 nm), A r C 1 (172 nm), etc. can be used advantageously.
- Preferred excimer lasers include KrF, KrC1, Arf, ArC1 excimer lasers and the like.
- the image exposure is preferably performed using a single wavelength light beam, and g-line (436 nm), ⁇ line (365 nm), excimer laser, etc. can be used for semiconductor manufacturing resists.
- Pattern exposure can be performed by exposing through a predetermined mask by a conventional method to form a predetermined pattern. After this pattern exposure, if necessary, bake by using a heating means such as a hot plate at an appropriate temperature (for example, 100 to 120) for an appropriate time (for example, 1 to 2 minutes). You may.
- the exposure wavelength for pattern formation differs depending on the type of the base resin and the photoactive component used, and may be on the short wavelength side ( ⁇ 2) or on the long wavelength side ( ⁇ ⁇ ).
- full-surface exposure is performed with long-wavelength light.
- image exposure is performed with long-wavelength light
- full-surface exposure is performed with short-wavelength light.
- a nopolak resin is used as the base resin
- the entire surface can be exposed to light having a wavelength of ⁇ 2 after image exposure using light having a wavelength of ⁇ 1.
- image exposure can be performed with light having a wavelength of ⁇ 2, and then the entire surface can be exposed with light having a wavelength of ⁇ 1.
- the entire surface exposure forms a layer that is hardly soluble or easily soluble in the developer on the surface layer of the photosensitive layer. Desirably, it is substantially inert with respect to wavelength.
- the photoactive component active at the wavelength of image exposure is preferably substantially inactive at the wavelength of overall exposure.
- the entire surface of the photosensitive resin composition of the present invention is exposed, so that the surface of the photosensitive layer is hardly soluble with a positive resist or easily with a negative resist, depending on the type of the positive or negative type. Can be solubilized.
- the energy of the overall exposure depends on the type of resist and the second photoactive component. Depending on the type of minute, etc., a suitable energy capable of being subjected to the insolubilization or solubilization treatment, for example, 0.05 to 50 mJ / cm 2 , preferably 0.1 ZS mJ Z cir ⁇ is more preferable. It can be selected from 0. 5 ⁇ 2 5m J / cm 2 extent ranges.
- the exposure energy is, for example, 0.5 to 50 mJ.
- Zc m 2 preferably Ru can be selected from l ⁇ 2 5m J Zc m 2 range of about.
- Exposure energy mJ / cm 2
- the exposure energy for making the surface of the photosensitive layer water resistant or hardly soluble is from 1 to 20 and preferably from about 1 to 10 You can choose.
- the water resistance or insolubilization can also be performed by adjusting the light irradiation time or light intensity.
- a predetermined pattern can be formed by developing with a conventional method using a developing solution such as an alkali developing solution. After the development, if necessary, use a heating means such as a hot plate at an appropriate temperature (for example, 120-130) for an appropriate time (for example,:! ⁇ 2 minutes). You may click.
- a developing solution such as an alkali developing solution.
- a heating means such as a hot plate at an appropriate temperature (for example, 120-130) for an appropriate time (for example,:! ⁇ 2 minutes). You may click.
- the resolution can be improved by shortening the wavelength of the exposure light. More specifically, the light distribution of the image exposure that irradiates the photosensitive material through the mask becomes “dull light” instead of a rectangle faithful to the mask due to light diffraction and wraparound. Therefore, in the case of a positive photosensitive material, the pattern becomes a triangular mountain shape, and in the case of a negative photosensitive material, the surface having strong light absorption hardens preferentially and becomes T-shaped, resulting in a reduction in resolution. On the other hand, by exposing the entire surface after pattern exposure, the surface of the resist film can be hardly dissolved in a positive photosensitive material, so that dissolution on the resist film surface with high light intensity can be suppressed.
- the surface of the resist film is easily dissolved (that is, the hardly insoluble surface layer is eliminated) Can be developed. Therefore, a high-contrast rectangular pattern with a high contrast (a value) can be formed as a pattern profile, and the resolution can be greatly improved. Further, even if the focus of the pattern exposure is slightly shifted, the resolution can be improved by making the resist film surface insoluble or easily soluble, so that the focus margin can be greatly improved.
- the sensitivity can be substantially improved.
- a negative photosensitive material using a curing system based on radical polymerization curing inhibition due to oxygen in the air is observed.
- an acid generator and a cross-linking agent are added as the second photoactive component, surface curing can be promoted by overall exposure, and the sensitivity can be substantially improved.
- the resolution and the sensitivity are in conflict with each other. For this reason, it is usually difficult to balance both at a high level.
- the resolution can be significantly improved without lowering the sensitivity, and thus the sensitivity is actually improved.
- the present invention it is possible to control the hydrophilicity and the hydrophobicity of the surface of the photosensitive material, so that the uniform developability can be improved.
- the hydrophobicity of resist films has been increasing along with the improvement in performance.
- the wettability with an alkali developing solution is reduced.
- the developing solution is difficult to spread uniformly over the entire surface of the substrate, and uniform development cannot be performed.
- a material that generates an acid by irradiation with light having a wavelength of ⁇ 2 is added in advance, and a material having a wavelength of ⁇ 2 is added.
- Hydrophilization can be achieved by generating an acid only in the vicinity of the surface by full-surface exposure.
- the photoactive component is composed of a combination of a plurality of photoactive components having different photosensitive wavelengths, sensitivity and resolution can be greatly improved even with existing equipment (especially, an exposure system).
- the pattern profile and focus margin can be greatly improved. for that reason, INDUSTRIAL APPLICABILITY
- the present invention can be used for various applications, for example, circuit forming materials (semiconductor manufacturing resists, printed wiring boards, etc.), image forming materials (printing plate materials, relief images, etc.).
- high sensitivity and resolution can be obtained, it can be advantageously used for a resist for semiconductor production.
- Nopolak resin (base resin): A novolak resin having a weight average molecular weight of 9500 obtained by reacting meta-cresol, para-cresol, 3,5-xylenol, and formalin according to a conventional method was used.
- the reaction was carried out as a catalyst to obtain a diazonaphthoquinone compound.
- a positive photoresist comprising nopolak resin (15 parts by weight), diazonaphthoquinone compound (7 parts by weight), and propylene glycol monoether ether acetate (78 parts by weight) as a solvent,
- the photosensitive resin composition is applied to the washed silicon wafer using a spin coater so that the film thickness after drying is 1.1 ⁇ m, and is heated on a hot plate at 90 ° C. for 1 minute. Clicked.
- Exposure was performed by changing the amount of exposure stepwise.
- the wafer was baked at 110 on a hot plate for 1 minute.
- the resist film of the wafer was entirely exposed for a predetermined time at an illuminance of 5 mW / cm 2 with an excimer light irradiation device UER20II-222 (KrC1 excimer laser, wavelength: 222 nm) manufactured by Shio Electric Co., Ltd. Then, development was performed with a 2.38% by weight aqueous solution of tetramethylammonium hydroxide for 1 minute to obtain a positive pattern.
- Sensitivity Displayed at an exposure amount such that a 0.5 micron line and space has a width of 1: 1.
- Example 4 ("0 ° 0.3 240 130 150 160 Example 5 (0 0.75 280 140 140 160 Example 6 (0 l. 5 300 160 160 180 Comparative Example l 180 182 185 185 Example 1 ( ⁇ ) 0.3 0.50 0.35 0.35 0.40 Example 2 ( ⁇ ) 0.75 0.55 0.35 0.35 0.35 Example 3 ( ⁇ ) l. 5 0.55 0 40 0.35 0.35 Example 4 (0 0.30.50 0.35 0.35 0.40 Example 5 (0 0.75 0.55 0.35 0.35 0.40 Example 6 (0 l. 5 0. 60 0. 40 0. 40 0. 45 Comparative Example 1 0. 50 0. 50 0. 50 0.50 Example 1 ( ⁇ ) 0.3 l. 8 3. 0 2. 9 2.4 Example 2 ( ⁇ ) 0.75 l. 6 2.6 2. 8 2.66 Example 3 ( ⁇ ) l. 5 l. 5 2. 4 2. 7 2.5 gamma value Example 4 (0 0.3 l. 8 2. 5 2. 4 2. 3
- Example 5 (0 0.75 l. 5 2. 7 2. 5 2.3
- Example 6 (0 l. 5 l. 3 2. 2 2. 3 2.0 Comparative Example 1 l. 8 1.8 l 81.8 Examples 7 and 8
- an acid generator represented by the following formulas (D) and (E) and hexoxymethoxymethylmelamine were used in the positive photoresist used in Example 1.
- a fixed amount was added to prepare a photosensitive resin composition.
- the obtained photosensitive resin composition was evaluated for sensitivity, resolution and a-value in the same manner as in Example 1.
- the results shown in Table 2 were obtained.
- the amounts of the components (D) and (E) are based on 100 parts by weight of the base resin.
- Example 7 The formula (D) used in Example 7 was used for 1 part by weight of a polyvinyl phenol resin having a weight average molecular weight of 750, in which 30 mol% of hydroxyl groups was substituted with 1: 1-BOC (t-butoxycarbonyloxy group). ) was added, and the mixture was mixed with 60 parts by weight of propylene dalicol monomethyl ether acetate as a solvent to prepare a positive photoresist.
- the photosensitive resin composition is applied to the washed silicone wafer using a spin coater so that the dried film thickness becomes 0.7 im, and The plate was baked at 80 for 1 minute.
- the wafer was baked on a hot plate at 100 for 1 minute.
- the entire surface was exposed for a predetermined time. Thereafter, a paddle development was performed for 1 minute with an aqueous solution of 2.38% by weight of tetramethylammonium hydroxide to obtain a positive pattern.
- Sensitivity Displayed at an exposure amount such that a 0.4 micron line and space has a 1: 1 width.
- Example 12 (G) 0.6 85 51 50 51 Comparative Example 2 65 65 65 65 65
- Example 9 (F) 0.3 0.30 30 0.23 0.21 0.22 Resolution Resolution 10 (F) 0. 6 0.32 0.23 0.22 0.23 ( ⁇ )
- Example 11 (G) 0.3 0.30 0.23 0.21 0.22
- Example 12 (G) 0.6.0.30 .23 0.22 0.23 Comparative Example 2 0.30 0.30 0.30 0.30 0.30 0.30 0.30
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Materials For Photolithography (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019997007467A KR100591215B1 (ko) | 1997-12-19 | 1998-12-10 | 감광성 수지 조성물 및 그의 제조 방법 |
US09/367,605 US6440632B2 (en) | 1997-12-19 | 1998-12-10 | Photosensitive resin composition and process for producing the same |
EP98959161A EP0962825A4 (en) | 1997-12-19 | 1998-12-10 | PHOTOSENSITIVE RESIN COMPOSITION AND MANUFACTURING METHOD THEREOF |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/351309 | 1997-12-19 | ||
JP35130997 | 1997-12-19 | ||
JP10175129A JPH11237737A (ja) | 1997-12-19 | 1998-06-22 | 感光性樹脂組成物およびその製造方法 |
JP10/175129 | 1998-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999032935A1 true WO1999032935A1 (fr) | 1999-07-01 |
Family
ID=26496486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005597 WO1999032935A1 (fr) | 1997-12-19 | 1998-12-10 | Composition a base de resine photosensible et procede de fabrication correspondant |
Country Status (6)
Country | Link |
---|---|
US (1) | US6440632B2 (ja) |
EP (1) | EP0962825A4 (ja) |
JP (1) | JPH11237737A (ja) |
KR (1) | KR100591215B1 (ja) |
TW (1) | TW457402B (ja) |
WO (1) | WO1999032935A1 (ja) |
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US6797450B2 (en) * | 2000-07-27 | 2004-09-28 | Jsr Corporation | Radiation-sensitive composition, insulating film and organic EL display element |
US6746821B2 (en) | 2000-10-31 | 2004-06-08 | Infineon Technologies Ag | Method of structuring a photoresist layer |
DE10106861C1 (de) * | 2001-02-14 | 2003-02-06 | Infineon Technologies Ag | Verfahren zur Herstellung feiner Resiststrukturen bei der Herstellung mikroelektronischer Bauelemente |
JP4514347B2 (ja) * | 2001-02-23 | 2010-07-28 | 東京応化工業株式会社 | 化学増幅型ポジ型ホトレジスト組成物を用いたレジストパターン形成方法 |
DE10120675B4 (de) | 2001-04-27 | 2005-07-21 | Infineon Technologies Ag | Verfahren zur Strukturierung einer Photolackschicht |
DE10120673B4 (de) | 2001-04-27 | 2007-01-25 | Infineon Technologies Ag | Verfahren zur Strukturierung einer Photolackschicht |
DE10120676B4 (de) | 2001-04-27 | 2005-06-16 | Infineon Technologies Ag | Verfahren zur Strukturierung einer Photolackschicht |
DE10120674B4 (de) | 2001-04-27 | 2005-06-16 | Infineon Technologies Ag | Verfahren zur Strukturierung einer Photolackschicht |
JP3901997B2 (ja) * | 2001-11-27 | 2007-04-04 | 富士通株式会社 | レジスト材料、レジストパターン及びその製造方法、並びに、半導体装置及びその製造方法 |
KR100451505B1 (ko) * | 2001-12-15 | 2004-10-06 | 주식회사 하이닉스반도체 | 마스크 패턴 형성방법 |
US7022452B2 (en) | 2002-09-04 | 2006-04-04 | Agilent Technologies, Inc. | Contrast enhanced photolithography |
KR20040032468A (ko) * | 2002-10-10 | 2004-04-17 | 주식회사 아담스테크놀로지 | 고개구율 액정표시소자의 유기절연막용 레지스트 조성물 |
JP2004177683A (ja) * | 2002-11-27 | 2004-06-24 | Clariant (Japan) Kk | 超高耐熱ポジ型感光性組成物を用いたパターン形成方法 |
JP4622282B2 (ja) * | 2003-03-26 | 2011-02-02 | 住友ベークライト株式会社 | ポジ型感光性樹脂組成物並びに半導体装置及び表示素子 |
KR101055215B1 (ko) * | 2004-08-30 | 2011-08-08 | 동우 화인켐 주식회사 | 화학증폭형 포지티브형 레지스트 조성물 |
JP5137410B2 (ja) * | 2006-06-09 | 2013-02-06 | キヤノン株式会社 | 感光性化合物、感光性組成物、レジストパターンの形成方法及び基板の加工方法 |
JP5317463B2 (ja) * | 2007-11-19 | 2013-10-16 | 旭化成イーマテリアルズ株式会社 | ポジ型感光性樹脂組成物 |
WO2011133680A2 (en) * | 2010-04-22 | 2011-10-27 | Board Of Regents The University Of Texas System | Novel dual-tone resist formulations and methods |
KR20120107653A (ko) | 2011-03-22 | 2012-10-04 | 삼성디스플레이 주식회사 | 감광성 수지 조성물 및 이를 이용한 패턴의 형성 방법 |
KR20140015869A (ko) * | 2012-07-26 | 2014-02-07 | 삼성디스플레이 주식회사 | 포토 레지스트 조성물 및 이를 이용한 박막 트랜지스터 표시판 제조 방법 |
JP6438645B2 (ja) * | 2013-09-26 | 2018-12-19 | 富士フイルム株式会社 | 感活性光線性又は感放射線性組成物、並びに、これを用いた、レジスト膜、パターン形成方法、レジスト塗布マスクブランクス、フォトマスクの製造方法、及び電子デバイスの製造方法 |
TWI541596B (zh) * | 2013-12-26 | 2016-07-11 | Asahi Kasei E Materials Corp | A photosensitive resin composition and a photosensitive resin laminate |
US9618848B2 (en) * | 2014-02-24 | 2017-04-11 | Tokyo Electron Limited | Methods and techniques to use with photosensitized chemically amplified resist chemicals and processes |
US10020195B2 (en) * | 2014-02-25 | 2018-07-10 | Tokyo Electron Limited | Chemical amplification methods and techniques for developable bottom anti-reflective coatings and dyed implant resists |
US10048594B2 (en) | 2016-02-19 | 2018-08-14 | Tokyo Electron Limited | Photo-sensitized chemically amplified resist (PS-CAR) model calibration |
US10429745B2 (en) | 2016-02-19 | 2019-10-01 | Osaka University | Photo-sensitized chemically amplified resist (PS-CAR) simulation |
KR102475021B1 (ko) | 2016-05-13 | 2022-12-06 | 도쿄엘렉트론가부시키가이샤 | 감광 화학물질 또는 감광 화학 증폭형 레지스트의 사용에 의한 임계 치수 제어 |
KR102177192B1 (ko) | 2016-05-13 | 2020-11-10 | 도쿄엘렉트론가부시키가이샤 | 광 작용제의 사용에 의한 임계 치수 제어 |
JP2021530732A (ja) * | 2018-07-09 | 2021-11-11 | アプライド マテリアルズ インコーポレイテッドApplied Materials, Incorporated | ライン倍増のためのフォトレジスト組成物 |
KR20220046598A (ko) | 2019-08-16 | 2022-04-14 | 도쿄엘렉트론가부시키가이샤 | 확률 중심 결함 교정을 위한 방법 및 공정 |
WO2021105054A1 (en) * | 2019-11-25 | 2021-06-03 | Merck Patent Gmbh | Chemically amplified photoresist |
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JPS5979248A (ja) * | 1982-10-29 | 1984-05-08 | Tokyo Ohka Kogyo Co Ltd | 感光性組成物 |
JPS6270837A (ja) * | 1985-09-24 | 1987-04-01 | Sony Corp | ポジ型レジスト及びその形成方法 |
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-
1998
- 1998-06-22 JP JP10175129A patent/JPH11237737A/ja active Pending
- 1998-12-10 US US09/367,605 patent/US6440632B2/en not_active Expired - Fee Related
- 1998-12-10 WO PCT/JP1998/005597 patent/WO1999032935A1/ja active IP Right Grant
- 1998-12-10 EP EP98959161A patent/EP0962825A4/en not_active Withdrawn
- 1998-12-10 KR KR1019997007467A patent/KR100591215B1/ko not_active IP Right Cessation
- 1998-12-16 TW TW087120892A patent/TW457402B/zh not_active IP Right Cessation
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JPS6270837A (ja) * | 1985-09-24 | 1987-04-01 | Sony Corp | ポジ型レジスト及びその形成方法 |
JPS62100751A (ja) * | 1985-10-24 | 1987-05-11 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | 自己整合パタ−ンの形成方法 |
JPS62249144A (ja) * | 1986-04-22 | 1987-10-30 | Konika Corp | 感光性組成物及び感光性平版印刷版 |
JPH0210345A (ja) * | 1988-06-29 | 1990-01-16 | Matsushita Electric Ind Co Ltd | パターン形成材料及びパターン形成方法 |
JPH03253858A (ja) * | 1990-03-05 | 1991-11-12 | Nippon Telegr & Teleph Corp <Ntt> | パターン形成材料及びパターン形成方法 |
JPH03276156A (ja) * | 1990-03-27 | 1991-12-06 | Sony Corp | ブロードバンド光源用レジスト |
JPH05127385A (ja) * | 1991-10-31 | 1993-05-25 | Nec Corp | 感光性樹脂 |
JPH05127371A (ja) * | 1991-11-01 | 1993-05-25 | Hitachi Ltd | パタン形成方法 |
JPH0736187A (ja) * | 1993-07-15 | 1995-02-07 | Nippon Kayaku Co Ltd | ネガ型化学増幅系レジスト組成物 |
JPH07219216A (ja) * | 1994-01-31 | 1995-08-18 | Nippon Kayaku Co Ltd | ポジ型感放射線性樹脂組成物及びそれを用いるパターン形成法 |
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Title |
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See also references of EP0962825A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH11237737A (ja) | 1999-08-31 |
EP0962825A1 (en) | 1999-12-08 |
KR20000071177A (ko) | 2000-11-25 |
US6440632B2 (en) | 2002-08-27 |
KR100591215B1 (ko) | 2006-06-22 |
TW457402B (en) | 2001-10-01 |
US20020012867A1 (en) | 2002-01-31 |
EP0962825A4 (en) | 2000-03-22 |
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