WO2012020747A1 - リソグラフィー用リンス液およびそれを用いたパターン形成方法 - Google Patents
リソグラフィー用リンス液およびそれを用いたパターン形成方法 Download PDFInfo
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- WO2012020747A1 WO2012020747A1 PCT/JP2011/068109 JP2011068109W WO2012020747A1 WO 2012020747 A1 WO2012020747 A1 WO 2012020747A1 JP 2011068109 W JP2011068109 W JP 2011068109W WO 2012020747 A1 WO2012020747 A1 WO 2012020747A1
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- Prior art keywords
- butylenediamine
- hydrocarbon chain
- rinsing liquid
- lithography
- propylenediamine
- 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
- G03F7/26—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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
- G03F7/405—Treatment with inorganic or organometallic reagents after imagewise removal
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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
- G03F7/265—Selective reaction with inorganic or organometallic reagents after image-wise exposure, e.g. silylation
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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
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
Definitions
- the present invention relates to a rinsing liquid for lithography. More specifically, the present invention relates to a rinsing liquid for lithography suitably used in the development process of a photosensitive resin composition used in the manufacture of flat panel displays (FPD) such as semiconductor devices and liquid crystal display elements, color filters, and the like. The present invention relates to a pattern forming method using the rinsing liquid for lithography.
- FPD flat panel displays
- a positive or negative photosensitive resin composition is used to form a resist pattern.
- a positive photoresist for example, a photosensitive resin composition comprising an alkali-soluble resin and a quinonediazide compound that is a photosensitive substance is widely used.
- a “chemically amplified photosensitive resin composition” has been proposed as a high-resolution radiation-sensitive resin composition that is sensitive to short-wavelength radiation.
- This chemically amplified photosensitive resin composition contains a compound that generates an acid upon irradiation with radiation, an acid is generated from this acid generating compound upon irradiation with radiation, and a catalytic image formation step using the generated acid, Since it is advantageous in that high sensitivity can be obtained, it is replacing the conventional photosensitive resin composition and is becoming popular.
- the pattern collapse is also considered to occur when a negative pressure is generated between the patterns due to the surface tension of pure water when the pattern is washed with pure water after development. From this point of view, in order to improve pattern collapse, it has been proposed to use a rinsing liquid containing specific components in place of conventional pure water (see Patent Documents 1 to 4). In these patent documents, it is proposed to use a rinsing liquid for lithography containing a specific nonionic surfactant for cleaning.
- JP 2004-184648 A JP 05-299336 A Japanese Patent Laid-Open No. 07-140673 JP 2008-146099 A
- Hydrogen bonded to a carbon atom may be substituted with —OH, —F, ⁇ O or —NH 2 , and — (CO) —, — (COO) —, — ( CONH) —, —O—, —NH—, or —N ⁇ ,
- Two of R 8 , R 9 , R 10 , and R 11 may combine to form a cyclic structure; However, all of R 8 , R 9 , R 10 , and R 11 are not hydrogen at the same time, L ′ is a hydrocarbon chain having 1 to 10 carbon atoms, m is a number representing the number of repetitions of 1 to 1000) And at least one nitrogen-containing compound selected from the group consisting of water and water.
- the pattern forming method according to the present invention includes: (1) A photosensitive resin composition is applied to a substrate to form a photosensitive resin composition layer, (2) exposing the photosensitive resin composition layer; (3) Developing the exposed photosensitive resin composition layer with a developer, (4) It is characterized by comprising processing with the above-described lithography rinse solution.
- the rinsing liquid for lithography By using the rinsing liquid for lithography according to the present invention, it is possible to simultaneously achieve the prevention of pattern collapse and the prevention of melting of a refined resist pattern, particularly a refined pattern by an ArF resist or an extreme ultraviolet resist. As a result, a finer and more accurate resist pattern can be formed.
- the rinsing liquid for lithography according to the present invention comprises a specific nitrogen-containing compound having an organic group and water.
- the nitrogen-containing compound used in the present invention is represented by any one of the following general formulas (1) to (3).
- R 4, R 5, R 6, and R 7 are each independently hydrogen, 1 to 10 carbon atoms or a hydrocarbon chain preferably of from 1 to 4 saturated or unsaturated, wherein said Hydrogen bonded to a carbon atom constituting the hydrocarbon chain may be substituted with —OH, —F, ⁇ O or —NH 2.
- R 4 , R 5 , R 6 , and R 7 may be bonded to form a cyclic structure; However, R 4, R 5, R 6 , and all R 7 are not simultaneously hydrogen, preferably R 4, R 5, R 6 , and three or more of R 7 is a hydrocarbon chain, R Most preferably, 4 , R 5 , R 6 , and R 7 are all hydrocarbon chains; L is a hydrocarbon chain having 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, particularly preferably 1 to 4 carbon atoms).
- R 8 , R 9 , R 10 , and R 11 are each independently hydrogen, a saturated or unsaturated hydrocarbon chain having 1 to 10 carbon atoms, and constitutes the hydrocarbon chain. Hydrogen bonded to a carbon atom may be substituted with —OH, —F, ⁇ O or —NH 2 , and — (CO) —, — (COO) —, — ( CONH) —, —O—, —NH—, or —N ⁇ , Two of R 8 , R 9 , R 10 , and R 11 may combine to form a cyclic structure; However, all of R 8 , R 9 , R 10 , and R 11 are not hydrogen at the same time, L ′ is a hydrocarbon chain having 1 to 10 carbon atoms, preferably 1 to 5 carbon atoms, m is a number representing the number of repetitions of 1 to 1000, preferably 1 to 50)
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 contained in one molecule
- Any two of R 10 and R 11 may be bonded to form a cyclic structure. That is, for example, a piperazine ring, piperidine ring, pyridine ring, pyrazoline ring, pyrazolidine ring, pyrroline ring, or morpholine ring may be formed.
- one end of R 1 , R 2 , and R 3 may be bonded to the polymer main chain.
- the nitrogen-containing compound of the general formula (1) constitutes a side chain bonded to the polymer main chain.
- the structure of the polymer main chain is not particularly limited, and a polymer polymerized by a general method such as addition polymerization of a vinyl group, condensation polymerization by an acid amide bond, dehydration condensation of an acid group can be used.
- the carbon number of the polymer main chain is 20,000 or less. Is preferably 10,000 or less, and most preferably 1,000 or less.
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , and R 11 are not all hydrogen at the same time. That is, at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , and R 11 in each formula is the hydrocarbon chain described above. And all are preferably hydrocarbon chains.
- nitrogen-containing compounds represented by the general formulas (1) to (3) those having the general formula (2) are preferable because the effects of the present invention are remarkable.
- tetraalkylalkylene diamine is preferable because it is easily available and has a remarkable effect.
- each R ′ is independently hydrogen, a saturated or unsaturated hydrocarbon chain having 1 to 10 carbon atoms, wherein the hydrogen bonded to the carbon atom constituting the hydrocarbon chain is —OH , —F, ⁇ O or —NH 2 may be substituted.
- R ′ is preferably a methyl group, an ethyl group, a methoxy group, an ethoxy group, a trifluoromethyl group or the like.
- X is the number of substituents bonded to the ring, and n is 1 or 2. That is, the cyclic structure represented by the general formulas (a5) to (a7) is a 5-membered ring or a 6-membered ring. The minimum value of x is 0, and the maximum value is a number determined by the size of the ring and other substituents.
- nitrogen-containing compounds represented by the general formulas (b1) to (b4) are polymers having the nitrogen-containing compound represented by the general formula (1) as a carbon chain side chain.
- nitrogen-containing compounds can be used in combination of two or more as required.
- the rinsing liquid for lithography according to the present invention contains water as a solvent in addition to the nitrogen-containing compound described above.
- the water used is preferably water from which organic impurities, metal ions, and the like have been removed by distillation, ion exchange treatment, filter treatment, various adsorption treatments, and the like, particularly pure water.
- the rinsing liquid for lithography according to the present invention may further contain a surfactant.
- the surfactant is preferably used because it improves the wettability of the resist surface by the rinsing liquid and improves the pattern collapse and pattern peeling by adjusting the surface tension.
- any of a nonionic surfactant, a cationic surfactant, an anionic surfactant, a zwitterionic surfactant, and the like can be used.
- nonionic surfactants in particular nonionic surfactants having an alkyleneoxy group, are preferred because the effects of the present invention are more strongly expressed when combined with the aforementioned nitrogen-containing compounds.
- a surfactant represented by the following general formula (S1) or (S2) is preferable.
- EO represents — (CH 2 ) 2 —O—
- PO represents —CH 2 —CH (CH 3 ) —O—
- the unit of EO and PO is a block even if they are bonded at random.
- L 1 is a hydrocarbon chain having 1 to 30 carbon atoms, may contain an unsaturated bond.
- L 1 is preferably a hydrocarbon chain represented by the following formula.
- each R b is independently a linear or branched, saturated or unsaturated hydrocarbon chain having 3 to 10 carbon atoms, and the hydrogen bonded to the carbon atom constituting the hydrocarbon chain is- It may be substituted with OH.
- R a is a saturated or unsaturated hydrocarbon chain having 5 to 30 carbon atoms.
- R1 to r3 and s1 to s3 are integers of 20 or less representing the number of repetitions of EO or PO.
- r1 + s1 and r2 + s2 are each independently an integer of 0 to 20, provided that r1 + s1 + r2 + s2 is an integer of 1 or more.
- r1 + s1 and r2 + s2 are preferably integers of 2 to 10.
- R3 + s3 is an integer of 1 to 20, preferably an integer of 2 to 10.
- surfactants can be used in combination of two or more as required.
- the rinsing liquid for lithography according to the present invention can contain further additives as required.
- additives include acids, bases, and organic solvents.
- Acid or base is used to adjust the pH of the treatment liquid or improve the solubility of each component.
- the acid or base used can be arbitrarily selected within a range not impairing the effects of the present invention, and examples thereof include carboxylic acids, amines, and ammonium salts. These include fatty acids, aromatic carboxylic acids, primary amines, secondary amines, tertiary amines, ammonium compounds, which may be substituted with any substituent.
- formic acid acetic acid, propionic acid, benzoic acid, phthalic acid, salicylic acid, lactic acid, malic acid, citric acid, oxalic acid, malonic acid, succinic acid, fumaric acid, maleic acid, aconitic acid, glutaric acid
- examples include adipic acid, monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, and tetramethylammonium.
- an organic solvent other than water can be used as a co-solvent.
- the organic solvent has an effect of adjusting the surface tension of the rinsing liquid and may improve wettability to the resist surface.
- the organic solvent that can be used in such a case is selected from organic solvents that are soluble in water.
- alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol, and t-butyl alcohol
- glycols such as ethylene glycol and diethylene glycol
- ketones such as acetone and methyl ethyl ketone, methyl acetate, ethyl acetate, and ethyl lactate Esters
- dimethylformamide dimethyl sulfoxide
- organic solvents are limited to a small amount when used because they may dissolve or modify the resist constituting the pattern.
- the content of the organic solvent is usually 15% or less, preferably 0.1% or more, based on the total weight of the rinse liquid.
- the lithography rinse liquid according to the present invention may further contain a bactericidal agent, an antibacterial agent, a preservative, and / or a fungicide.
- bactericidal agent an antibacterial agent, a preservative, and / or a fungicide.
- these agents are used to prevent bacteria or fungi from breeding in aging rinses. Examples of these include alcohols such as phenoxyethanol and isothiazolone. Bestside (trade name) commercially available from Nippon Soda Co., Ltd. is a particularly effective antiseptic, fungicide and fungicide.
- these agents do not affect the performance of the lithographic rinsing liquid, usually less than 1%, preferably less than 0.1%, and preferably 0, based on the total weight of the rinsing liquid. The content is 0.001 weight or more.
- the rinsing liquid for lithography according to the present invention is obtained by dissolving each component in water as a solvent.
- the content of each component is arbitrarily determined according to the use of the rinse solution, the type of resist to be processed, the solubility of each component, and the like. In general, a higher content of nitrogen-containing compound is preferable because the effect of improving pattern collapse is large, and a lower content of nitrogen-containing compound is preferable because melting tends to be excellent.
- an appropriate content is selected depending on the balance and the components of the rinse liquid. Specifically, it is preferably 0.005% or more and 5% or less based on the total weight of the rinse liquid.
- the content of the nitrogen-containing compound is preferably 0.01% or more, based on the total weight of the rinse liquid, 0.05% More preferably, it is 5% or less, more preferably 2% or less.
- the content of the nitrogen-containing compound is preferably 0.005% or more, based on the total weight of the rinse liquid, and 0.01% or more. More preferably, it is preferably 1% or less, and more preferably 0.5% or less.
- the surfactant content is generally 0.01% or more, preferably 0.03% or more, more preferably 0.1% or more, and generally 10% or less.
- water, a nitrogen-containing compound, and a surfactant are the main components, and the content of other components is preferably 1% or less based on the total weight of the rinsing liquid. More preferably, it is 5% or less.
- the lithography process in the pattern forming method of the present invention may be any known as a method for forming a resist pattern using a known positive photosensitive resin composition or a negative photosensitive resin composition. Good.
- a typical pattern forming method to which the rinsing liquid for lithography of the present invention is applied includes the following method.
- a photosensitive resin composition is applied to a surface of a substrate such as a silicon substrate or a glass substrate, which has been pretreated as necessary, by a conventionally known coating method such as a spin coating method.
- a conventionally known coating method such as a spin coating method.
- an antireflection film may be formed by coating on the upper layer or the lower layer of the resist. Such an antireflection film can improve the cross-sectional shape and the exposure margin.
- any conventionally known photosensitive resin composition can be used in the pattern forming method of the present invention.
- a positive type for example, what consists of a quinonediazide type photosensitizer and alkali-soluble resin
- a chemically amplified photosensitive resin in a negative type composition, for example, an azide compound containing a polymer compound having a photosensitive group such as polyvinyl cinnamate, an aromatic azide compound, or a cyclized rubber and a bisazide compound
- a photopolymerizable composition containing an addition-polymerizable unsaturated compound, a chemically amplified negative photosensitive resin composition, and the like.
- Examples of the quinone diazide photosensitizer used in the positive photosensitive resin composition comprising a quinone diazide photosensitizer and an alkali-soluble resin include 1,2-benzoquinone diazide-4-sulfonic acid and 1,2-naphthoquinone diazide. -4-sulfonic acid, 1,2-naphthoquinonediazide-5-sulfonic acid, esters or amides of these sulfonic acids, and examples of alkali-soluble resins include novolak resin, polyvinylphenol, polyvinyl alcohol, acrylic acid, Is a copolymer of methacrylic acid.
- the novolak resin is produced from one or more phenols such as phenol, o-cresol, m-cresol, p-cresol, xylenol and one or more aldehydes such as formaldehyde and paraformaldehyde. Is preferable.
- the chemically amplified photosensitive resin composition can be used for the pattern forming method of the present invention regardless of whether it is a positive type or a negative type.
- a chemically amplified resist generates an acid upon irradiation and forms a pattern by changing the solubility of the irradiated portion in the developer by a chemical change caused by the catalytic action of this acid. Containing an acid-generating compound to be generated and an acid-sensitive group-containing resin that decomposes in the presence of an acid to produce an alkali-soluble group such as a phenolic hydroxyl group or a carboxyl group, an alkali-soluble resin, a crosslinking agent, and an acid generator What consists of an agent is mentioned.
- the photosensitive resin composition layer formed on the substrate is pre-baked, for example, on a hot plate to remove the solvent in the photosensitive resin composition, and a photoresist having a thickness of usually about 0.5 to 2.5 microns. It is made a film.
- the prebaking temperature varies depending on the solvent or the photosensitive resin composition used, but is usually 20 to 200 ° C., preferably about 50 to 150 ° C.
- the photoresist film is then used with a known irradiation device such as a high-pressure mercury lamp, a metal halide lamp, an ultra-high pressure mercury lamp, a KrF excimer laser, an ArF excimer laser, a soft X-ray irradiation device, an electron beam drawing device, and through a mask as necessary. Exposure is performed.
- a known irradiation device such as a high-pressure mercury lamp, a metal halide lamp, an ultra-high pressure mercury lamp, a KrF excimer laser, an ArF excimer laser, a soft X-ray irradiation device, an electron beam drawing device, and through a mask as necessary. Exposure is performed.
- the development of the resist is usually performed using an alkaline developer.
- an alkaline developer for example, an aqueous solution or aqueous solution such as sodium hydroxide or tetramethylammonium hydroxide (TMAH) is used.
- TMAH tetramethylammonium hydroxide
- the resist pattern is rinsed (washed) using a rinse solution.
- the formed resist pattern is used as a resist for etching, plating, ion diffusion, dyeing, and the like, and then peeled off as necessary.
- the pattern forming method according to the present invention can effectively improve pattern collapse and melting even for a resist pattern which is fine and has a high aspect ratio.
- the aspect ratio is the ratio of the height to the width of the resist pattern. Therefore, the pattern forming method according to the present invention is a lithography process in which such a fine resist pattern is formed, that is, an exposure light source using KrF excimer laser, ArF excimer laser, X-ray, electron beam, etc., 250 nm. It is preferable to combine a lithography process including exposure at the following exposure wavelengths.
- the pattern size of the resist pattern it is preferable to include a lithography process for forming a resist pattern having a line width in a line-and-space pattern or a hole diameter in a contact hole pattern of 300 nm or less, particularly 50 nm or less.
- the resist pattern is developed and then processed with the above-described rinsing liquid for lithography.
- the time for bringing the rinsing solution for lithography into contact with the resist substrate is not particularly limited, but the effect of the present invention is generally manifested by setting the processing time to 1 second or longer.
- a method of bringing the rinsing liquid into contact with the resist is also arbitrary.
- the rinsing liquid may be immersed in the rinsing liquid or supplied by dropping, spraying, or spraying the rinsing liquid onto the surface of the rotating resist substrate.
- the cleaning process can be performed with pure water.
- the former cleaning process is performed to clean the developer adhering to the resist pattern, and the latter cleaning process is performed to clean the rinsing liquid.
- the method of cleaning with pure water can be performed by any method, for example, by immersing the resist substrate in pure water or supplying pure water to the rotating resist substrate surface by dropping, spraying or spraying. be able to. Either one or both of these cleaning treatments with pure water can be performed.
- the latter cleaning treatment can be performed for removing the rinse liquid.
- the effect of the present invention is maximized by washing with pure water and then washing with pure water to increase the melting effect. There are things you can do.
- the nitrogen-containing compound in the rinsing liquid penetrates from the resist surface to the inside during the rinsing process, and bonds to the carboxylic acid group inside the resist. The effect of improving melting is strengthened.
- Comparative Example A101 An antireflection film having a thickness of 80 nm was formed on a silicon substrate using a composition for bottom antireflection film (KrF-17B (trade name) manufactured by AZ Electronic Materials Co., Ltd.) corresponding to KrF exposure.
- An ArF resist composition (DX6270 (trade name) manufactured by AZ Electronic Materials Co., Ltd.) is applied thereon to a film thickness of 620 nm, and a substrate having a resist film is baked under conditions of 130 ° C./90 seconds. Got ready.
- the obtained substrate was exposed with a KrF exposure apparatus (FPA-EX5 (trade name) manufactured by Canon Inc.) and developed to produce a developed resist substrate having a line pattern. Note that a plurality of patterns having different aspect ratios were formed by changing the line width by changing the exposure conditions during exposure.
- the formed pattern was observed to evaluate the maximum aspect ratio at which no pattern collapse occurred.
- the aspect ratio at which pattern collapse did not occur was 3.0.
- the melting of the formed pattern was evaluated. After the formed pattern was introduced into a heating furnace and heated at 130 ° C. for 70 seconds, and the pattern shape was confirmed, slight melting was observed.
- Comparative Examples A102 to A105 and Examples A101 to A108 The comparative example A101 was evaluated by adding a step of processing with a rinsing solution after development.
- the rinse treatment was performed by rinsing the developed resist pattern with pure water and then immersing it in a rinse solution containing a nitrogen-containing compound shown in Table 1 for 8 to 10 seconds.
- the obtained results were as shown in Table 1.
- the evaluation criteria for pattern collapse in the table are as follows.
- A The aspect ratio at which pattern collapse occurs exceeds 4.0 and the effect of improving pattern collapse is remarkable.
- B The aspect ratio at which pattern collapse occurs is from 3.4 to 4.0, and the effect of improving pattern collapse is recognized.
- C The aspect ratio at which pattern collapse occurs is less than 3.4, and there is little or no effect of improving pattern collapse.
- the evaluation criteria for melting in the table are as follows. A: Melting is not occurring at all B: Slight melting is occurring but there is no practical problem C: Melting is remarkable and impractical
- Comparative Examples A201 to A206 and Examples A201 to A204 Evaluation similar to Comparative Example A101 was performed using a rinse solution containing trimethylamine or N, N, N ′, N′-tetramethylethylenediamine as a nitrogen-containing compound. At this time, the concentration of the nitrogen-containing compound was changed as shown in Table 2. The obtained results were as shown in Table 2.
- Comparative Examples B101 to B104 and Examples B101 to B104 Evaluation similar to Comparative Example A101 was performed using a rinse solution containing a nitrogen-containing compound and / or a nonionic surfactant. At this time, N, N, N ′, N′-tetramethylethylenediamine was used as the nitrogen-containing compound.
- the surfactant those represented by the following formula (S-1), (S-2), or (S-3) were used. The obtained results were as shown in Table 3.
- R b1 is a methyl group
- R b2 is an isobutyl group
- R a2 is C 18 H 37
- r12 15
- R a3 is C 18 H 37
- r13 10
- s13 5.
- Comparative Examples B201 to B202 and Examples B201 to B220 An antireflection film having a thickness of 37 nm was formed on a silicon substrate using a composition for bottom antireflection film (ArF1C5D (trade name) manufactured by AZ Electronic Materials Co., Ltd.) corresponding to ArF exposure.
- An ArF resist composition (AX2110P (trade name) manufactured by AZ Electronic Materials Co., Ltd.) is applied thereon so as to have a film thickness of 90 nm, and a substrate having a resist film is baked under conditions of 110 ° C./60 seconds. Got ready.
- the obtained substrate was exposed with an ArF exposure apparatus (NSR-S306C (trade name) manufactured by Nikon Corporation) and developed to produce a developed resist substrate having a line pattern. Note that the line width was changed by changing the exposure conditions during exposure to form a plurality of patterns having different aspect ratios (Comparative Example B101). For Comparative Example B101, pattern collapse and melting were evaluated in the same manner as Comparative Example A101.
- Comparative Example B101 was performed using a rinse solution containing a nitrogen-containing compound and / or a nonionic surfactant.
- the surfactant (S-1) was used as the nonionic surfactant.
- the nitrogen-containing compounds shown in Table 4 were used. The obtained results were as shown in Table 4.
- Examples C101 to C102 The following examples are examples showing the effect of adding a bactericide to improve the shelf life of the lithography rinse solution.
- 2 L of the rinse solution of Example B217 was divided into two equal parts (Examples C101 and C102).
- 0.2 g of 5% aqueous solution of Best Side 600C (trade name, manufactured by Nippon Soda Co., Ltd.), which is a commercially available disinfectant, was added to the rinse liquid of Example C102.
- Each of these rinse solutions was divided into nine parts and left in a beaker without a lid for 12 hours. Subsequently, these beakers were sealed and stored at a constant temperature for a fixed time as shown in Table 5.
- Examples D101 to D102 Prepare 1 liter of rinse solution in which the concentration of N, N, N ′, N′-tetrabutylethylenediamine was changed to 1.0% with respect to 1 L of the rinse solution of Example B218, and divide this rinse solution into two equal parts. (Examples D101 and D102). Of these, 10 ml of isopropanol was added to the rinse solution of Example D102, and 10 ml of water was added to the rinse solution of Example D101. After thoroughly stirring each rinse solution. Placed in a glass bottle and left at room temperature for 7 days. As a result of visual observation, all the rinse solutions were transparent.
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Abstract
Description
下記一般式(1)~(3):
R1、R2、およびR3のうちの二つが結合して環状構造を形成していてもよく、
R1、R2、およびR3のうちの一つの末端が、炭素数20,000以下の重合体主鎖に結合していてもよく、
ただし、R1、R2、およびR3のうちの少なくとも一つは炭素数が2以上である)、
R4、R5、R6、およびR7のうちの二つが結合して環状構造を形成していてもよく、
ただし、R4、R5、R6、およびR7のすべては同時に水素ではなく、
Lは炭素数1~10の炭化水素鎖である)、および
R8、R9、R10、およびR11のうちの二つが結合して環状構造を形成していてもよく、
ただし、R8、R9、R10、およびR11のすべては同時に水素ではなく、
L’は炭素数1~10の炭化水素鎖であり、
mは1~1000の繰り返し数を表す数である)
から選ばれる少なくとも一種の含窒素化合物と水とを含むことを特徴とするものである。
(1)基板に感光性樹脂組成物を塗布して感光性樹脂組成物層を形成させ、
(2)前記感光性樹脂組成物層を露光し、
(3)露光済みの感光性樹脂組成物層を現像液により現像し、
(4)上記のリソグラフィー用リンス液で処理すること
を含んでなることを特徴とするものである。
R1、R2、およびR3のうちの二つが結合して環状構造を形成していてもよく、
R1、R2、およびR3のうちの一つの末端が、炭素数20,000以下の重合体主鎖に結合していてもよく、
ただし、R1、R2、およびR3のうちの少なくとも一つは炭素数が2以上である)、
R4、R5、R6、およびR7のうちの二つが結合して環状構造を形成していてもよく、
ただし、R4、R5、R6、およびR7のすべては同時に水素ではなく、R4、R5、R6、およびR7のうち3個以上が炭化水素鎖であることが好ましく、R4、R5、R6、およびR7のすべてが炭化水素鎖であることが最も好ましく、
Lは炭素数1~10、好ましくは1~6、特に好ましくは1~4の炭化水素鎖である)、
および
R8、R9、R10、およびR11のうちの二つが結合して環状構造を形成していてもよく、
ただし、R8、R9、R10、およびR11のすべては同時に水素ではなく、
L’は炭素数1~10、好ましくは1~5の炭化水素鎖であり、
mは1~1000、好ましくは1~50の繰り返し数を表す数である)
N,N,N’,N’-テトラメチルエチレンジアミン、
N,N,N’,N’-テトラエチルエチレンジアミン、
N,N,N’,N’-テトラプロピルエチレンジアミン、
N,N,N’,N’-テトライソプロピルエチレンジアミン、
N,N,N’,N’-テトラブチルエチレンジアミン、
N,N,N’,N’-テトライソブチルエチレンジアミン、
N,N,N’,N’-テトラメチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラエチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラプロピル-1,2-プロピレンジアミン、
N,N,N’,N’-テトライソプロピル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラブチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトライソブチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラメチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラエチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラプロピル-1,3-プロピレンジアミン、
N,N,N’,N’-テトライソプロピル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラブチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトライソブチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラメチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラエチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラプロピル-1,2-ブチレンジアミン、
N,N,N’,N’-テトライソプロピル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラブチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトライソブチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラメチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラエチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラプロピル-1,3-ブチレンジアミン、
N,N,N’,N’-テトライソプロピル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラブチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトライソブチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラメチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラエチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラプロピル-1,4-ブチレンジアミン、
N,N,N’,N’-テトライソプロピル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラブチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトライソブチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラメチル-1,5-ペンチレンジアミン、
N,N,N’,N’-テトラエチル-1,5-ペンチレンジアミン、
N,N,N’,N’-テトラメチル-1,6-ヘキシレンジアミン、および
N,N,N’,N’-テトラエチル-1,6-ヘキシレンジアミン
からなる群から選択されるものが好ましい。
pは0~2であり、
qは1~10,000であり、好ましくは1~1,000である。
L1は炭素数1~30の炭化水素鎖であり、不飽和結合を含んでいてもよい。L1は好ましくは下記式で表される炭化水素鎖である。
また、Raは、炭素数5~30の飽和または不飽和の炭化水素鎖である。
また、r1~r3およびs1~s3はEOまたはPOの繰り返し数を表す、20以下の整数である。ここで、r1+s1、およびr2+s2は、それぞれ独立に0~20の整数であり、ただし、r1+s1+r2+s2は1以上の整数である。r1+s1、およびr2+s2は、好ましくは2~10の整数である。また、r3+s3は1~20の整数であり、好ましくは2~10の整数である。
シリコン基板上にKrF露光に対応した底面反射防止膜用組成物(AZエレクトロニックマテリアルズ株式会社製KrF-17B(商品名))を用いて80nmの膜厚で反射防止膜を製膜した。その上にArFレジスト組成物(AZエレクトロニックマテリアルズ株式会社製DX6270(商品名))を膜厚620nmになるように塗布し、130℃/90秒の条件でベーク処理してレジスト膜を有する基板を準備した。得られた基板をKrF露光装置(キャノン株式会社製FPA-EX5(商品名))で露光し、現像して、ラインパターンを有する現像済みレジスト基板を作製した。なお、露光時に露光条件を変化させることによりライン幅を変化させて、アスペクト比が異なる複数のパターンを形成させた。
比較例A101に対して、現像後にリンス液で処理する工程を追加して、評価を行った。リンス処理は、現像後のレジストパターンを、純水による洗浄を行った後、表1に記載した含窒素化合物を含むリンス液に8~10秒間浸漬することにより行った。得られた結果は表1に示すとおりであった。
テトラメチルエチレンジアミン=N,N,N’,N’-テトラメチルエチレンジアミン
テトラエチルエチレンジアミン=N,N,N’,N’-テトラエチルエチレンジアミン
テトラメチルプロピレンジアミン=N,N,N’,N’-テトラメチル-1,3-プロピレンジアミン
テトラエチルブチレンジアミン=N,N,N’,N’-テトラメチル-1,4-ブチレンジアミン
テトラメチルヘキシレンジアミン=N,N,N’,N’-テトラメチル-1,6-ヘキシレンジアミン
テトラエチルプロパンジアミン=N,N,N’,N’-テトラエチル-1,3-プロピレンジアミン
表中のパターン倒れの評価基準は以下の通りである。
A: パターン倒れの起こるアスペクト比が4.0を超え、パターン倒れ改良効果が顕著である
B: パターン倒れの起こるアスペクト比が3.4以上4.0以下であり、パターン倒れ改良効果が認められる
C: パターン倒れの起こるアスペクト比が3.4未満であり、パターン倒れ改良効果がほとんど無いか、全く認められない
また、表中のメルティングの評価基準は以下の通りである。
A: 全くメルティングが起きていない
B: わずかにメルティングが起きているが、実用上問題がない
C: メルティングが顕著で実用不可能
含窒素化合物としてトリメチルアミンまたはN,N,N’,N’-テトラメチルエチレンジアミンを含むリンス液を用いて、比較例A101と同様の評価を行った。この際、含窒素化合物の濃度を表2に示すとおりに変化させた。得られた結果は表2に示すとおりであった。
含窒素化合物および/または非イオン性界面活性剤を含むリンス液を用いて、比較例A101と同様の評価を行った。このとき含窒素化合物としてはN,N,N’,N’-テトラメチルエチレンジアミンを用いた。また、界面活性剤としては、下記式(S-1)、(S-2)、または(S-3)で示されるものを用いた。得られた結果は表3に示すとおりであった。
Ra2は、C18H37、r12=15であり、
Ra3は、C18H37、r13=10、s13=5である。
シリコン基板上にArF露光に対応した底面反射防止膜用組成物(AZエレクトロニックマテリアルズ株式会社製ArF1C5D(商品名))を用いて37nmの膜厚で反射防止膜を製膜した。その上にArFレジスト組成物(AZエレクトロニックマテリアルズ株式会社製AX2110P(商品名))を膜厚90nmになるように塗布し、110℃/60秒の条件でベーク処理してレジスト膜を有する基板を準備した。得られた基板をArF露光装置(ニコン株式会社製NSR-S306C(商品名))で露光し、現像して、ラインパターンを有する現像済みレジスト基板を作製した。なお、露光時に露光条件を変化させることによりライン幅を変化させて、アスペクト比が異なる複数のパターンを形成させた(比較例B101)。比較例B101について、比較例A101と同様にパターン倒れおよびメルティングの評価を行った。
以下の例は、リソグラフィーリンス液の貯蔵寿命を改良する殺菌剤添加の効果を示す例である。
2Lの実施例B217のリンス液を2等分した(実施例C101およびC102)。実施例C102のリンス液には市販の殺菌剤であるベストサイド600C(商品名、日本曹達株式会社製)の5%水溶液を0.2g添加した。これらのリンス液を、それぞれ9つに分割し、蓋をしていないビーカー中で12時間放置した。引き続き、これらのビーカーを密閉し、表5に示すように一定温度で一定時間保存した。その後、野村マイクロ・サイエンス株式会社による独自の培養方法を用いて評価し、リンス液中のバクテリア数を測定した。殺菌剤を含むリンス液C102は、殺菌剤を含まないC101に対して非常に長い貯蔵寿命を有することがわかった。
1Lの実施例B218のリンス液に対して、N,N,N’,N’-テトラブチルエチレンジアミンの濃度を1.0%に変更したリンス液を1リットル準備し、このリンス液を2等分した(実施例D101およびD102)。これらのうち実施例D102のリンス液には10mlのイソプロパノールを添加し、実施例D101のリンス液には10mlの水を添加した。それぞれのリンス液をよく撹拌した後。ガラスビンに入れて室温で7日間放置した。目視観察したところ、いずれのリンス液も透明であった。
Claims (14)
- 下記一般式(1)~(3):
R1、R2、およびR3のうちの二つが結合して環状構造を形成していてもよく、
R1、R2、およびR3のうちの一つの末端が、炭素数20,000以下の重合体主鎖に結合していてもよく、
ただし、R1、R2、およびR3のうちの少なくとも一つは炭素数が2以上である)、
R4、R5、R6、およびR7のうちの二つが結合して環状構造を形成していてもよく、
ただし、R4、R5、R6、およびR7のすべては同時に水素ではなく、
Lは炭素数1~10の炭化水素鎖である)、および
R8、R9、R10、およびR11のうちの二つが結合して環状構造を形成していてもよく、
ただし、R8、R9、R10、およびR11のすべては同時に水素ではなく、
L’は炭素数1~10の炭化水素鎖であり、
mは1~1000の繰り返し数を表す数である)
から選ばれる少なくとも一種の含窒素化合物と水とを含むことを特徴とするリソグラフィー用リンス液。 - 前記含窒素化合物が、一般式(2)で表されるものである、請求項1に記載のリソグラフィー用リンス液。
- 前記含窒素化合物が、
N,N,N’,N’-テトラメチルエチレンジアミン、
N,N,N’,N’-テトラエチルエチレンジアミン、
N,N,N’,N’-テトラプロピルエチレンジアミン、
N,N,N’,N’-テトライソプロピルエチレンジアミン、
N,N,N’,N’-テトラブチルエチレンジアミン、
N,N,N’,N’-テトライソブチルエチレンジアミン、
N,N,N’,N’-テトラメチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラエチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラプロピル-1,2-プロピレンジアミン、
N,N,N’,N’-テトライソプロピル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラブチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトライソブチル-1,2-プロピレンジアミン、
N,N,N’,N’-テトラメチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラエチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラプロピル-1,3-プロピレンジアミン、
N,N,N’,N’-テトライソプロピル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラブチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトライソブチル-1,3-プロピレンジアミン、
N,N,N’,N’-テトラメチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラエチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラプロピル-1,2-ブチレンジアミン、
N,N,N’,N’-テトライソプロピル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラブチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトライソブチル-1,2-ブチレンジアミン、
N,N,N’,N’-テトラメチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラエチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラプロピル-1,3-ブチレンジアミン、
N,N,N’,N’-テトライソプロピル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラブチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトライソブチル-1,3-ブチレンジアミン、
N,N,N’,N’-テトラメチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラエチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラプロピル-1,4-ブチレンジアミン、
N,N,N’,N’-テトライソプロピル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラブチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトライソブチル-1,4-ブチレンジアミン、
N,N,N’,N’-テトラメチル-1,5-ペンチレンジアミン、
N,N,N’,N’-テトラエチル-1,5-ペンチレンジアミン、
N,N,N’,N’-テトラメチル-1,6-ヘキシレンジアミン、および
N,N,N’,N’-テトラエチル-1,6-ヘキシレンジアミン
からなる群から選ばれるものである、請求項2に記載のリソグラフィー用リンス液。 - 前記含窒素化合物の含有率が、リンス液の全重量を基準として、0.005%以上5%以下である、請求項1~5のいずれか1項に記載のリソグラフィー用リンス液。
- アルキレンオキシ基を有する非イオン性界面活性剤をさらに含んでなる、請求項1~6のいずれか1項に記載のリソグラフィー用リンス液。
- 前記非イオン性界面活性剤が下記一般式(S1)および(S2):
L1は炭素数1~30の炭化水素鎖であり、不飽和結合を含んでいてもよく、
Raは、炭素数5~30の飽和または不飽和の炭化水素鎖であり、
r1~r3およびs1~s3はEOまたはPOの繰り返し数を表す、20以下の整数であり、r1+s1、およびr2+s2は、それぞれ独立に0~20の整数であり、ただし、r1+s1+r2+s2は1以上の整数であり、
r3+s3は1~20の整数であり、好ましくは2~10の整数である。)
で表される請求項7に記載のリソグラフィー用リンス液。 - 前記リソグラフィー用リンス液の全質量を基準として、前記非イオン性界面活性剤の含有率が0.01~10%である、請求項7または8に記載のリソグラフィー用リンス液。
- 殺菌剤、抗菌剤、防腐剤、または防カビ剤をさらに含んでなる、請求項1~9に記載のリソグラフィー用リンス液。
- 殺菌剤、静菌剤、防腐剤、または抗菌剤の含有量が、リンス液の全重量を基準として0.001%以上1%以下である、請求項10に記載のリソグラフィー用リンス液。
- 水に可溶な有機溶媒をさらに含んでなる、請求項1~11のいずれか1項に記載のリソグラフィー用リンス液。
- 前記有機溶媒の含有量が、リンス液の全重量を基準として0.1%以上15%以下である、請求項12に記載のリソグラフィー用リンス液。
- (1)基板に感光性樹脂組成物を塗布して感光性樹脂組成物層を形成させ、
(2)前記感光性樹脂組成物層を露光し、
(3)露光済みの感光性樹脂組成物層を現像液により現像し、
(4)請求項1~13のいずれか1項に記載のリソグラフィー用リンス液で処理すること
を含んでなることを特徴とする、パターン形成方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11816411.0A EP2605069B1 (en) | 2010-08-13 | 2011-08-09 | Rinse liquid for lithography and method for forming pattern using same |
US13/812,737 US20130164694A1 (en) | 2010-08-13 | 2011-08-09 | Rinse solution for lithography and pattern formation method employing the same |
CN201180039173.9A CN103080844B (zh) | 2010-08-13 | 2011-08-09 | 光刻用清洗液以及使用其的图案形成方法 |
KR1020187017360A KR101959206B1 (ko) | 2010-08-13 | 2011-08-09 | 리소그래피용 린스액 및 이를 사용한 패턴 형성 방법 |
KR1020137006191A KR20130102558A (ko) | 2010-08-13 | 2011-08-09 | 리소그래피용 린스액 및 이를 사용한 패턴 형성 방법 |
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JP2010181305A JP5591623B2 (ja) | 2010-08-13 | 2010-08-13 | リソグラフィー用リンス液およびそれを用いたパターン形成方法 |
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US (1) | US20130164694A1 (ja) |
EP (1) | EP2605069B1 (ja) |
JP (1) | JP5591623B2 (ja) |
KR (2) | KR20130102558A (ja) |
CN (1) | CN103080844B (ja) |
MY (1) | MY161562A (ja) |
TW (1) | TWI619808B (ja) |
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US20160309757A1 (en) * | 2013-12-03 | 2016-10-27 | Silvia Marina PAGANO FLORES | Process for preparing concentrated foaming compositions sweetened with honey and such compositions |
US11851422B2 (en) | 2021-07-09 | 2023-12-26 | Aligos Therapeutics, Inc. | Anti-viral compounds |
US12036286B2 (en) | 2021-03-18 | 2024-07-16 | Seagen Inc. | Selective drug release from internalized conjugates of biologically active compounds |
US12065428B2 (en) | 2021-09-17 | 2024-08-20 | Aligos Therapeutics, Inc. | Anti-viral compounds |
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JP2020067547A (ja) * | 2018-10-24 | 2020-04-30 | メルク、パテント、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツングMerck Patent GmbH | 半導体水溶性組成物およびその使用 |
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US20160309757A1 (en) * | 2013-12-03 | 2016-10-27 | Silvia Marina PAGANO FLORES | Process for preparing concentrated foaming compositions sweetened with honey and such compositions |
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Also Published As
Publication number | Publication date |
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KR20130102558A (ko) | 2013-09-17 |
JP5591623B2 (ja) | 2014-09-17 |
EP2605069A4 (en) | 2014-05-21 |
TW201213540A (en) | 2012-04-01 |
KR20180072853A (ko) | 2018-06-29 |
EP2605069B1 (en) | 2021-09-22 |
EP2605069A1 (en) | 2013-06-19 |
CN103080844B (zh) | 2015-05-13 |
US20130164694A1 (en) | 2013-06-27 |
CN103080844A (zh) | 2013-05-01 |
MY161562A (en) | 2017-04-28 |
TWI619808B (zh) | 2018-04-01 |
KR101959206B1 (ko) | 2019-03-19 |
JP2012042531A (ja) | 2012-03-01 |
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