WO1994025904A1 - Positive electron-beam resist composition and developer for positive electron-beam resist - Google Patents
Positive electron-beam resist composition and developer for positive electron-beam resist Download PDFInfo
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- WO1994025904A1 WO1994025904A1 PCT/JP1994/000720 JP9400720W WO9425904A1 WO 1994025904 A1 WO1994025904 A1 WO 1994025904A1 JP 9400720 W JP9400720 W JP 9400720W WO 9425904 A1 WO9425904 A1 WO 9425904A1
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
- G03F7/322—Aqueous alkaline compositions
-
- 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
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/143—Electron beam
Definitions
- the present invention relates to a positive-type electron beam resist composition and a positive-type electron beam resist developer used when manufacturing photolithography masks, semiconductor integrated circuits, and the like using electron beam lithography.
- positive-type electron beam resists are mainly composed of polymers such as polymethyl methacrylate, poly ( ⁇ -chloro mouth acrylate 2,2,2-trifluoroethyl), and poly (1-butene sulfone). Have been used.
- these resists have a drawback that the dry etching resistance is insufficient.
- dry etching is increasingly used in the manufacture of photomasks, semiconductor integrated circuits, and the like, the use of these conventional resists is increasing.
- positive photoresists containing a novolak resin and a quinonediazide compound as main components has excellent dry etching resistance and can be developed with a non-swelling alkaline aqueous solution, so it has the advantage of excellent resolution and pattern shape. In this case, the sensitivity was extremely low, and it was not practical.
- An object of the present invention is to provide a positive type electron beam resist composition containing a novolak resin and a quinonediazide compound as main components, having excellent drying resistance and resolution, and having high sensitivity.
- Another object of the present invention is to provide a method for forming a fine pattern having a specific sensitivity, a rectangular shape with a clear pattern shape, and a higher resolution by using such a positive electron beam resist composition.
- a positive-type electron beam resist composition containing novolak and quinondiazide as the main components which is excellent in dry etching resistance and resolution. And a fine pattern can be obtained with high sensitivity.
- the present inventors have studied a resist and a process mainly composed of a novolak resin and a quinonediazide compound, and as a result, have found that a material and a composition optimized for a resist using a developer of a specific composition are used. It was found that high sensitivity, which was not possible with the conversion of a conventional photoresist, could be obtained by performing the development.
- the positive electron beam resist composition of the present invention comprises, as main components, at least one selected from the group consisting of (1) cresolnopolak resin, and (2) compounds represented by the following general formulas (I) and (II).
- a kind of additive is a kind of additive
- R 1 , R 2 and R 3 represent a hydrogen atom, an alkyl group, an aralkyl group and
- R 1 () and R 11 represents a hydrogen atom, a halogen atom, one selected from the group consisting of hydroxyl and alkyl groups. m represents 0 3 and n represents 0. )
- One CH C-0-, one CH 2 - CH- 0-, one CH- 0-, one CH 2 - 0-,
- R represents an alkyl group or an aralkyl group.
- the cresol novolac resin used in the positive-working electron beam composition of the present invention is, for example, cresol, preferably a mixture of P-cresol and m-cresol, and a formaldehyde or a polymer thereof. It is obtained by condensing paraformaldehyde or 1,3,5-trioxane, which is a coalescence.
- the condensation reaction is carried out without a solvent or in an organic solvent.
- organic solvent include alcohols such as methanol, ethanol, 1-propanol, 2-propanol, and 1-butanol; cellosolves such as methylcellosolve, ethylselvsolve, and butylcellesolve; methylcellosesolve acetate; Preferred are cellosolve esters such as ethyl ether, ethers such as tetrahydrofuran and 1,4-dioxane.
- acids such as oxalic acid, formic acid, hydrochloric acid, sulfuric acid, perchloric acid, phosphoric acid, and P-toluenesulfonic acid, and metal salts such as zinc acetate and magnesium acetate are preferably used.
- the novolak resin thus obtained generally contains low molecular weight components such as a binuclear body in which two phenol units are condensed and a trinuclear body in which three phenol units are condensed. This one three one Among these low molecular weight components, there are components that cause scum and deteriorate pattern shapes. When the synthesized novolak contains a large amount of these low molecular weight components, it is preferable to remove the components by an appropriate operation to reduce the total content of binuclear and trinuclear to 10% by weight or less.
- the following method can be used.
- Nopolak resin is finely ground and stirred at a certain temperature with an organic solvent such as benzene, toluene, xylene, black benzene, dichlorobenzene, or water, or a mixture of water and an organic solvent such as methanol and ethanol. Extract low molecular weight components.
- an organic solvent such as benzene, toluene, xylene, black benzene, dichlorobenzene, or water, or a mixture of water and an organic solvent such as methanol and ethanol. Extract low molecular weight components.
- novolak resin Dissolve the novolak resin in organic solvents such as methanol, ethanol, acetone, and ethyl sorb. Then, a poor solvent such as water, petroleum ether, or hexane is dropped into the novolak solution, or a novolak solution is dropped into the poor solvent to precipitate and separate the novolak resin, followed by drying.
- organic solvents such as methanol, ethanol, acetone, and ethyl sorb.
- a poor solvent such as water, petroleum ether, or hexane is dropped into the novolak solution, or a novolak solution is dropped into the poor solvent to precipitate and separate the novolak resin, followed by drying.
- an organic solvent that is miscible with water such as methanol, ethanol, acetone, and ethyl sorbate
- an organic solvent that is not miscible with water such as sorbet acetate and propylene glycol monomethyl ether acetate.
- the electron beam resist of the present invention contains at least one selected from the group of compounds represented by formulas (I) and (II) as additives.
- additives may be used alone or as a mixture of two or more kinds.
- the content of the additives in the solid resist component is 5% by weight or more and 20% by weight or less.
- the resist solids mean those obtained by removing the solvent from the resist composition. If the amount is less than 5% by weight, the sensitivity is lowered. If the amount exceeds 20% by weight, the resist pattern is deteriorated. More preferably, it is not less than 10% by weight and not more than 20% by weight.
- the electron beam resist of the present invention contains, as a component responsive to an electron beam, a quinonediazide compound obtained by reacting methyl gallate with 1,2-naphthoquinonediazido 4-sulfonyl chloride.
- the quinonediazide compound obtained in this manner is generally composed of a component (monoester) in which one of the hydrogens of the hydroxyl group of methyl gallate is replaced by a 1,2-naphthoquinonediazidosulfonyl group, and a hydrogen atom of the hydroxyl group. Of which two are substituted with 1,2-naphthoquinonediazidosulfonyl groups (diesters), and those in which all three hydrogens of hydroxyl groups are substituted with 1,2-naphthoquinonediazidosulfonyl groups ( Triester).
- the content of the triester relative to the whole quinonediazide compound is 30% by weight or more and less than 55% by weight. More preferably, the content is 40% by weight or more and 50% by weight or less.
- the content of the ester is higher than this range, the sensitivity is lowered.
- the content of the entire quinonediazide compound in the resist solids is from 10% by weight to 20% by weight. Preferably, it is not less than 15% by weight and not more than 20% by weight. If the content exceeds 20% by weight, the sensitivity is lowered. If the content is less than 10% by weight, the film thickness is significantly increased.
- composition range does not exactly match the range used in the electron beam resist of the present invention, and the composition suitable for a photoresist and the composition suitable for an electron beam resist are greatly different. Is evident.
- additives such as a surfactant and an antioxidant can be appropriately added to the resist composition of the present invention.
- the resist composition of the present invention is obtained by dissolving the above components in a solvent.
- the amount of the solvent used is not particularly limited, but is adjusted so that the resist solids content is 10 to 35% by weight in the resist composition.
- Preferred examples of the solvent include esters such as ethyl acetate, butyl acetate, amyl nitrate, methyl propionate, ethyl propionate, methyl butyrate, ethyl butyrate, methyl benzoate, methyl lactate, and ethyl lactate; Cellosolves such as Mouth Solve and Butylacet Solve, etc., Cellosolve Esters such as Methylacet Solvent Acetate, Ethylose Mouth Solvet Acetate and Butylse Mouth Solvent Acetate, Propylene Glycol Monomethyl Ether Acetate, Propylene Glycol Monoethyl Ether Acetate Ethers such as 1,2-dimethoxyethane, 1,2-di
- a fine pattern is formed by applying the electron beam resist of the present invention on a substrate to be processed, drying, applying pattern exposure using an electron beam, and developing.
- the coating, drying and exposure may be performed by a conventionally known method for forming a pattern of an electron beam resist. For example, using a spinner or the like, the film is dried so as to have a thickness of about 0.5 to 2.0 ⁇ m, and is dried at about 90 to 120 for about 1 to 10 minutes.
- a normal electron beam exposure apparatus may be used.
- a resist containing a novolak resin and a quinonediazide compound as main components includes inorganic alkali metal hydroxides, carbonates, phosphates, silicates, borates, and the like, and 2-ethylethylamido.
- An aqueous solution containing one or more of amides such as ethanol, monoethanolamine, and ethanolamine, and quaternary ammonium hydroxides such as tetramethylammonium hydroxide and coryne is used.
- amides such as ethanol, monoethanolamine, and ethanolamine
- quaternary ammonium hydroxides such as tetramethylammonium hydroxide and coryne
- the developing solutions having various compositions as described above are used, and the present invention can be applied to the electron beam resist of the present invention.
- n 0.05, a ⁇ a ⁇ 0.5, 0.75 ⁇ bn ⁇ 1.5, and a ⁇ bn or a> bn, and the concentration of the water-soluble organic compound is 0. It is a developer for a positive electron beam resist, characterized in that the content is 5 to 10% by weight.
- the concentration of the alkali metal (the concentration of the total amount of the ionized material and the salted material) a is preferably 0.05 to 0.5 mO1 kg. More preferably, it is 0.08 to 0.4 mol 1 Zkg. If the concentration of Al-Li metal is too high, the film thickness will increase and no break will be obtained. If it is too low, the pattern to be dissolved will not dissolve and no pattern will be obtained.
- the concentration of the weak acid group (the concentration of the total amount of ionized and salt forms)
- the product of b and the valency n of the weak acid ion bn is from 0.075 to: 1.5 mol / kg Preferably. More preferably 0. 1 5 ⁇ 0. 9mo 1 Zk g. If the concentration of the weak acid radical is too high, the dissolution rate becomes slow and development becomes impossible. If it is too low, the solubility is uneven and a pattern cannot be obtained.
- the value of the b is in terms of the most dissociated state (in this case C 0 3 2 ") Therefore, the value of n is calculated as the valence in the most dissociated state (2 in this case), and the product bn is obtained.
- the relationship between the concentration a of the alkali metal and the product bn is preferably a ⁇ bn or a> bn.
- a is smaller than b n.
- b n it can be used as a developer, but the buffering effect is poor.
- a predetermined amount of hydroxide of alkali metal and a weak acid are dissolved in water, or a hydroxide of alkali metal and a weak acid salt of alkali metal are prepared.
- Examples thereof include a method of dissolving in a fixed amount of water, but the method is not limited thereto.
- the developer containing potassium ions and borate ions, which can provide specifically high sensitivity.
- the pattern shape becomes a beautiful rectangle, and the resolution is increased.
- the molar ratio of the boron atom to the boron atom in the developer is 100: 50 to 100: 100. More preferably, the ratio is from 100: 60 to L00: 70.
- the preferred concentration of the developing solution varies depending on the developing device, the temperature, and the resist composition, but it is generally preferable that the potassium atom contained in 1 kg of the developing solution is 0.05 to 0.50 mol.
- For the preparation of the developer not only a method of preparing from potassium hydroxide and potassium borate, but also a method of preparing from a considerable amount of hydrating power and boric acid can be used.
- the developer contains a water-soluble birch compound.
- a water-soluble organic compound By including a water-soluble organic compound in the developer, the solubility becomes uniform, the sensitivity is high, and the effect of eliminating the development residue is exhibited.
- water-soluble organic compound examples include compounds represented by the following general formulas (I), (11), (11), (IV), and (V), dimethyl sulfoxide, acetonitril, pyridine, Powers such as morpholine are not limited to these.
- One or more water-soluble organic compounds can be used.
- R 1, R 2, R 3 and R 4 are a hydrogen atom, represent one selected from the group consisting of alkyl groups and human Doroki Shiarukiru group. Or closed by coupling R 1 and R 4 rings The compound has 1 to 6 carbon atoms.
- R 1, R 2, and R 3 represents one selected from the group consisting of hydrogen atom, an alkyl group and hydroxy ⁇ alkyl group. Or those R 1 and R 3 is closed by combining The compound has 1 to 9 carbon atoms.
- R 1 , R 2 , and R 3 represent one selected from the group consisting of a hydrogen atom, an alkyl group, and a hydroxyalkyl group; or a ring closed by combining R 1 and R 3
- the compound has 1 to 9 carbon atoms.
- R 1 (0-CHR 2 -CHR 3 ) n OR 4 (IV) (wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of a hydrogen atom, an alkyl group and a hydroxyalkyl group) (Including those in which R 1 and R 4 are bonded to form a ring.
- N is 1 to 10 and the compound has 2 to 20 carbon atoms.
- R 1 and R 2 represent one selected from the group consisting of an alkyl group, a hydroxyalkyl group and a fuunyl group having a hydroxy group.
- the compound has 3 to 14 carbon atoms.
- Specific examples of the compound represented by the general formula (I) include methanol, ethanol, n-propanol, isopropanol, n-butanol, 2-methyl-11-propanol, 2-methyl-2-propanol, n—pentanol, 2-methyl—1-butanol, 2-methyl-2—butanol, 3-methyl-1-butanol, 3-methyl-2-butanol, 2,2—dimethyl-1-propanol, n-hexanol, Examples include, but are not limited to, cyclohexanol, 2,2-dimethyl-1,3-propanediol, glycerin, and tetrahydrofuran.
- Examples of the compound represented by the general formula (II) include getylamine, triethylamine, propylamine, dipropylamine, isopropylamine, diisopropylamine, monoethanolamine, diethanolamine, triethanolamine, and ethiamine.
- Examples of the compound represented by the general formula (III) include dimethylformamide, acetamide, N-methylacetamide, N, N-dimethylacetamide, N-ethylacetamide, N, N-ethylethylamide.
- Examples include, but are not limited to, toamide, pyrrolidone, N-methylpyrrolidone, N-vinylpyrrolidone, 3-pyrrolidino-l, 2-propanediol, phenolic rolactam, and forceprolactam.
- Examples of the compound represented by the general formula (IV) include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, and ethylene glycol.
- Examples of the compound represented by the general formula (V) include, but are not limited to, acetone, methylethylketone, 4-hydroxy-4-methyl-2-pentanone, and the like.
- dimethyl sulfoxide and the compounds represented by the general formulas (I), (11), (III) and (IV) are preferable, and among them, 2-dimethylaminophenol, dimethylamine and the like are preferable.
- examples include ethanol, diethanolamine, monoethanolamine, tetrahydrofuran, ethanol, ethylene glycol, propylene glycol, dimethyl sulfoxide, and N-methylpyrrolidone.
- the amount of the water-soluble organic compound to be added is preferably in the range of 0.5 to 10% by weight.
- the amount of the water-soluble organic compound is large, the film thickness is large and the resolution becomes poor.
- the amount is small, the film is rough and the development residue tends to remain.
- the developer used in the present invention includes an acetylene alcohol-based developer.
- Addition of a sulfonate-based surfactant is preferred because it does not adversely affect the performance.
- the addition amount of these surfactants is preferably from 30 to 300 ppm based on the developer.
- Novolak resin was obtained from m-cresol (35 parts), p-cresol (65 parts), oxalic acid (0.5 parts) and 37% formalin (46 parts) by a conventional method.
- the weight average molecular weight (converted to polyethylene oxide) of this novolak determined by gel permeation chromatography was 6650, the number average molecular weight was 118, the molecular weight dispersion was 5.62, and the binucleate content was Was 10.5% by weight, and the trinuclear content was 5.7% by weight.
- this novolak was taken, dissolved in 5.00 parts of methanol, and 4.0 parts of water was added dropwise with stirring to precipitate the novolak. The supernatant was removed, and the precipitated novolak was taken out and dried under vacuum at 50 ° C for 24 hours. 0.886 parts of nopolak were obtained, the weight average molecular weight of this novolak was 7,259, the number average molecular weight was 1,745, the molecular weight dispersion was 4.16, and the binuclear content was 6.1 weight %, Trinuclear content was 3.0% by weight
- Methyl gallate 1 5. 0 g and (8 1 mm o 1) 1 , dissolved 2-naphthoquinonediazide Njiaji de one 4- Suruhonirukurori de 4 1. 0 g of (1 5 3 mm o 1) to Jiokisan 220 cm 3 Then, the temperature was raised to 40 ° C., and a solution obtained by adding 15.4 g (153 mmo 1) of triethylamine to dioxane 65 c ⁇ was added dropwise, followed by stirring for 5.5 hours. The reaction mixture was poured into water, and the precipitate was collected by filtration, washed with water, washed with methanol, and dried to obtain 41.0 g of a yellow powder. The content of triesters determined by high performance liquid chromatography was 48%.
- the resist prepared in (3) was applied to a silicon wafer using a spinner, and baked in an oven at 110 ° C for 10 minutes to prepare a 0.5 ⁇ m-thick coated film sample.
- a rectangular area of 0.45 mm x 0.60 mm was subjected to scanning exposure at an accelerating voltage of 20 kV and a current amount of 1 nA by sequentially changing the exposure time.
- the resist film thickness of the unexposed portion and the exposed rectangular region of the sample was sequentially measured. For each exposed part, calculate the amount of exposure (ie, the product of the amount of current and the exposure time divided by the area) and the residual film rate (ie, the value of the exposed part thickness divided by the coating thickness), and calculate the residual film rate Sensitivity curves were plotted against the logarithm of the amount of exposure light. From this sensitivity curve, the exposure amount at which the residual film ratio became 0 was determined as the sensitivity value. In addition, the difference between the coating film thickness and the unexposed film thickness, that is, the film reduction, was determined.
- the sensitivity was 4.0 4.
- CZ cm 2 and the film thickness was 0.099 jtzm.
- a coating film sample was prepared and exposed in the same manner as in Example 1, and was immersed and developed for 140 seconds using the same developer as used in Example 1, and the characteristics were evaluated in the same manner as in Example 1.
- the sensitivity was 15.0 ⁇ C / cm ”and the film thickness was 0.102 ⁇ m.
- Example 1 The same nopolak as in Example 1 10.4 parts p-Crezotril trimer 1.3 parts The same quinonediazide compound as in Example 1 1.7 parts Propylene glycol monomethyl ether acetate 76.6 parts Dimethylformamide 10.0 parts Surfactant "Troysol" 366 0.03 parts
- a coating film sample was prepared and exposed in the same manner as in Example 1, and immersion-developed for 114 seconds using the same developer as used in Example 1, and the characteristics were evaluated as in Example 1.
- the sensitivity was 8.0 C / cm 2 and the film loss was 0.1 l O l jwm.
- a coating film sample was prepared and exposed in the same manner as in Example 1, and immersion-developed for 114 seconds using the same developer as used in Example 1, and the characteristics were evaluated as in Example 1.
- the sensitivity was 9.0 C / cm, and the film thickness was 0.099 ⁇ m.
- Example 1 Using the same resist as in Example 1, the coating film and exposure were performed under the same conditions. This was subjected to immersion development for 103 seconds using an aqueous solution containing 0.13 mol of potassium silicate in 1 kg, and the characteristics were evaluated in the same manner as in Example 1.
- the sensitivity was 7.0 7.C / cm 2 and the film thickness was 0.093 m.
- Example 2 Using the same resist as in Example 1, the coating film and the exposure were performed under the same conditions. This was subjected to immersion development for 110 seconds using an aqueous solution containing 0.213 mol of potassium silicate and 0.107 mol of potassium triphosphate in 1, and the characteristics were evaluated in the same manner as in Example 1. .
- the sensitivity was 8.0 Ccm 2 and the film loss was 1.050 «m.
- Example 1 Using the same resist as in Example 1, the coating film and exposure were performed under the same conditions. This was subjected to immersion development for 96 seconds using a 0.14N aqueous hydroxide aqueous solution, and the characteristics were evaluated in the same manner as in Example 1.
- the sensitivity was 13 CZcm 2 and the film loss was 0.090 ⁇ .
- a coating film sample was prepared and exposed in the same manner as in Example 1, and was subjected to immersion development for 180 seconds using the same developer as used in Example 1, and the characteristics were evaluated as in Example 1.
- a coating film sample was prepared in the same manner as in Example 1, exposed, and subjected to immersion development for 120 seconds using the same developer as used in Example 1, and the characteristics were evaluated as in Example 1.
- the sensitivity was 5.0 5.
- CZ cm 2 and the film thickness was 0.103 jm.
- Example 1 Nopolak as in Example 1 10.4 parts Exemplified compound ( ⁇ -8) 1.3 parts The same quinonediazide compound as in Example 1 1.7 parts Propylene glycol mono methyl ether
- a coating film sample was prepared and exposed in the same manner as in Example 1, and immersion-developed for 150 seconds using the same developer as used in Example 1, and the characteristics were evaluated as in Example 1.
- the sensitivity was 5.0 5.
- CZ cm 2 and the film thickness was 0.100 ⁇ m.
- Example 2 Using the same resist as in Example 1, the coating film was exposed under the same conditions. This was treated with 196 cc (0.196 mol) of 1N hydroxide, 7.0 g (0.113 mol) of sulphate acid, and 30.0 g (3.0% by weight) of 2-ethylethylaminoethanol in water. Using a developing solution of 1 kg dissolved in water, immersion development was performed at 23 ° C. for 300 seconds, rinsed with pure water, and the characteristics were evaluated in the same manner as in Example 1.
- the sensitivity was 4.6 CZ cm 2 and the film thickness was 0.093; tzm.
- Example 236 cc (0.236moI) of 1N hydroxide, 0.24g (0.135mol) of sulfuric acid, and 20.0g (2.0% by weight) of 2-ethylethylaminoethanol in water
- immersion development was performed at 23 for 300 seconds, rinsed with pure water, and the characteristics were evaluated in the same manner as in Example 1.
- Sensitivity was 4.5; u CZ cm 2 and film loss was 0.140 jt £ m.
- Example 6 Using the same resist as in Example 6, the coating film was exposed under the same conditions. This was added to 1N hydroxide 196 cc (0.196 mol), boric acid 7.0 g (0.113 mol), 2-ethylethylaminoethanol 30.0 g (3.0% by weight) Was dissolved in water, immersed in a developer of 1 kg at 23 ° C. for 300 seconds, rinsed with pure water, and evaluated in the same manner as in Example 1.
- the sensitivity was 4.3 4. CZ cm 2 and the film thickness was 0.103 // m.
- the positive type electron beam resist composition and the positive type electron beam resist developing solution of the present invention are used when manufacturing a mask for photolithography, a semiconductor integrated circuit, etc. using an electron beam lithography.
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94914572A EP0649061B1 (en) | 1993-04-28 | 1994-04-28 | Positive electron-beam resist composition |
DE69416564T DE69416564T2 (de) | 1993-04-28 | 1994-04-28 | Positiv arbeitender elektronenstrahlresist |
US08/360,806 US5629127A (en) | 1993-04-28 | 1994-04-28 | Positive electron beam resist composition containing cresolnovolak resin, select additive and methyl gallate/1,2-naphthoquinonediazido-4-sulfonyl chloride reaction product |
KR1019940704082A KR100194370B1 (ko) | 1993-04-28 | 1994-04-28 | 포지형 전자선 레지스트 조성물 및 포지형 전자선 레지스트용 현상액 |
US08/979,370 US5851739A (en) | 1993-04-28 | 1997-11-26 | Quinonediazide/novolak positive electron beam resist developer |
KR1019980708313A KR100201576B1 (en) | 1993-04-28 | 1998-10-16 | Quinonediazide/novolak positive electron beam resist developer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP10242893 | 1993-04-28 | ||
JP5/102428 | 1993-04-28 |
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WO1994025904A1 true WO1994025904A1 (en) | 1994-11-10 |
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PCT/JP1994/000720 WO1994025904A1 (en) | 1993-04-28 | 1994-04-28 | Positive electron-beam resist composition and developer for positive electron-beam resist |
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US (2) | US5629127A (ja) |
EP (2) | EP0874284B1 (ja) |
KR (1) | KR100194370B1 (ja) |
DE (2) | DE69430960T2 (ja) |
WO (1) | WO1994025904A1 (ja) |
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---|---|---|---|---|
JP3473931B2 (ja) * | 1996-11-11 | 2003-12-08 | 東京応化工業株式会社 | リフトオフ用ポジ型感光性組成物およびパターン形成方法 |
JP3369471B2 (ja) * | 1998-05-29 | 2003-01-20 | 東京応化工業株式会社 | ポジ型ホトレジスト組成物およびレジストパターンの形成方法 |
JP3688469B2 (ja) * | 1998-06-04 | 2005-08-31 | 東京応化工業株式会社 | ポジ型ホトレジスト組成物およびこれを用いたレジストパターンの形成方法 |
JP3968177B2 (ja) | 1998-09-29 | 2007-08-29 | Azエレクトロニックマテリアルズ株式会社 | 微細レジストパターン形成方法 |
JP3989149B2 (ja) * | 1999-12-16 | 2007-10-10 | 富士フイルム株式会社 | 電子線またはx線用化学増幅系ネガ型レジスト組成物 |
KR100783603B1 (ko) * | 2002-01-05 | 2007-12-07 | 삼성전자주식회사 | 포토레지스트 조성물 및 이를 사용한 패턴의 형성방법 |
JP2004341431A (ja) * | 2003-05-19 | 2004-12-02 | Tokyo Ohka Kogyo Co Ltd | ポジ型レジスト組成物およびレジストパターンの形成方法 |
TW200903192A (en) * | 2007-01-17 | 2009-01-16 | Sony Corp | Developing solution and method for production of finely patterned material |
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JPH02248954A (ja) * | 1989-03-22 | 1990-10-04 | Fuji Photo Film Co Ltd | 感電離放射線性樹脂組成物 |
JPH03230164A (ja) * | 1990-02-05 | 1991-10-14 | Toray Ind Inc | ポジ型フォトレジスト組成物 |
JPH04122938A (ja) * | 1990-09-13 | 1992-04-23 | Fuji Photo Film Co Ltd | ポジ型フオトレジスト組成物 |
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JPS63115162A (ja) * | 1986-10-31 | 1988-05-19 | Hitachi Chem Co Ltd | ポジ形感光性樹脂組成物 |
US5278030A (en) * | 1988-10-24 | 1994-01-11 | Du Pont-Howson Limited | Developer solution comprising ethyl hexyl sulphate, a surfactant, an alkaline material and having a pH of not less than 12 |
CA2019632A1 (en) * | 1989-06-29 | 1990-12-29 | Kazuhiro Shimura | Method of processing presensitized lithographic printing plate |
DE3938107A1 (de) * | 1989-11-16 | 1991-05-23 | Hoechst Ag | Entwicklerkonzentrat und daraus hergestellter entwickler fuer belichtete negativ arbeitende reproduktionsschichten sowie verfahren zur herstellung von druckformen |
DE3938108A1 (de) * | 1989-11-16 | 1991-05-23 | Hoechst Ag | Entwicklerkonzentrat und daraus hergestellter entwickler fuer belichtete negativ arbeitende reproduktionsschichten mit deckschicht sowie verfahren zur herstellung von druckformen |
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1994
- 1994-04-28 EP EP98108734A patent/EP0874284B1/en not_active Expired - Lifetime
- 1994-04-28 EP EP94914572A patent/EP0649061B1/en not_active Expired - Lifetime
- 1994-04-28 WO PCT/JP1994/000720 patent/WO1994025904A1/ja active IP Right Grant
- 1994-04-28 US US08/360,806 patent/US5629127A/en not_active Expired - Fee Related
- 1994-04-28 DE DE69430960T patent/DE69430960T2/de not_active Expired - Fee Related
- 1994-04-28 KR KR1019940704082A patent/KR100194370B1/ko not_active IP Right Cessation
- 1994-04-28 DE DE69416564T patent/DE69416564T2/de not_active Expired - Fee Related
-
1997
- 1997-11-26 US US08/979,370 patent/US5851739A/en not_active Expired - Fee Related
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JPH02248954A (ja) * | 1989-03-22 | 1990-10-04 | Fuji Photo Film Co Ltd | 感電離放射線性樹脂組成物 |
JPH03230164A (ja) * | 1990-02-05 | 1991-10-14 | Toray Ind Inc | ポジ型フォトレジスト組成物 |
JPH04122938A (ja) * | 1990-09-13 | 1992-04-23 | Fuji Photo Film Co Ltd | ポジ型フオトレジスト組成物 |
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Title |
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See also references of EP0649061A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0649061B1 (en) | 1999-02-17 |
DE69416564T2 (de) | 1999-07-15 |
EP0649061A1 (en) | 1995-04-19 |
KR100194370B1 (ko) | 1999-06-15 |
DE69430960D1 (de) | 2002-08-14 |
EP0874284A1 (en) | 1998-10-28 |
EP0874284B1 (en) | 2002-07-10 |
DE69416564D1 (de) | 1999-03-25 |
US5851739A (en) | 1998-12-22 |
DE69430960T2 (de) | 2003-02-20 |
EP0649061A4 (en) | 1995-08-09 |
US5629127A (en) | 1997-05-13 |
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