Source: https://patents.google.com/patent/US8741537B2/en
Timestamp: 2018-12-11 23:33:32
Document Index: 637496237

Matched Legal Cases: ['Application No. 2006', 'Application No. 10', 'Application No. 095107183', 'Application No. 2010', 'Application No. 095107183', 'Application No. 06004404', 'Application No. 095107183', 'Application No. 10', 'Application No. 10']

US8741537B2 - Positive resist composition and pattern-forming method using the same - Google Patents
US8741537B2
US8741537B2 US11366420 US36642006A US8741537B2 US 8741537 B2 US8741537 B2 US 8741537B2 US 11366420 US11366420 US 11366420 US 36642006 A US36642006 A US 36642006A US 8741537 B2 US8741537 B2 US 8741537B2
US20060199100A1 (en )
(Depth of focus)=±k 2·λ/NA2
(Resolution)=k 1·(λ0 /n)/NA0
(Depth of focus)=±k 2·(λ0 /n)/NA0 2
As the aromatic amine and the heterocyclic amine, e.g., aniline derivatives, diphenyl(p-tolyl)amine, methyldiphenyl-amine, triphenylamine, phenylenediamine, naphthylamine, diaminonaphthalene, pyrrole derivatives, oxazole derivatives, thiazole derivatives, imidazole derivatives, pyrazole derivatives, furazane derivatives, pyrroline derivatives, pyrrolidine derivatives, imidazoline derivatives, imidazolidine derivatives, pyridine derivatives (preferably, 2-(2-hydroxyethyl)pyridine), pyridazine derivatives, pyrimidine derivatives, pyrazine derivatives, pyrazoline derivatives, pyrazolidine derivatives, piperidine derivatives, piperazine derivatives (preferably, 1-(2-hydroxyethyl)piperazine and 1-[2-(2-hydroxyethoxy)ethyl]piperazine), morpholine derivatives (preferably, 4(2-hydroxyethyl)morpholine), indole derivatives, isoindole derivatives, 1H-indazole derivatives, indoline derivatives, quinoline derivatives, isoquinoline derivatives, cinnoline derivatives, quinazoline derivatives, quinoxaline derivatives, phthalazine derivatives, purine derivatives, pteridine derivatives, carbazole derivatives, phenanthridine derivatives, acridine derivatives, phenazine derivatives, 1,10-phenanthroline derivatives, adenine derivatives, adenosine derivatives, guanine derivatives, guanosine derivatives, uracil derivatives, and uridine derivatives can be exemplified.
The repeating unit represented by formula (pA) is more preferably a repeating unit by 2-alkyl-2-adamantyl (meth)acrylate or dialkyl(1-adamantyl)methyl (meth)acrylate.
In the formula, R0 represents a tertiary alkyl group, e.g., a t-butyl group or a t-amyl group; an isoboronyl group; a 1-alkoxyethyl group, e.g., a 1-ethoxyethyl group, a 1-butoxyethyl group, a 1-isobutoxyethyl group, or a 1-cyclohexyloxyethyl group, an alkoxymethyl group, e.g., a 1-methoxymethyl group or a 1-ethoxymethyl group; a 3-oxoalkyl group, a tetrahydropyranyl group, a tetrahydrofuranyl group, a trialkylsilyl ester group, a 3-oxocyclohexyl ester group, a 2-methyl-2-adamantyl group, or a mevalonic lactone residue. X1 has the same meaning as X above.
The contents of a repeating unit having a group having the above lactone structure and a repeating unit having the group represented by formula (IV) (a hydroxyadamantane structure) are as follows:
As the nitrogen-containing compounds having a cyano group, specifically, e.g., 3-(diethylamino)propiononitrile, N,N-bis(2-hydroxyethyl)3-aminopropiononitrile, N,N-bis(2-acetoxyethyl)-3-aminopropiononitrile, N,N-bis(2-formyloxyethyl)-3-aminopropiononitrile, N,N-bis(2-methoxyethyl)-3-aminopropiononitrile, N,N-bis[2-(methoxymethoxy)ethyl]-3-aminopropiononitrile, methyl N-(2-cyanoethyl)-N-(2-methoxyethyl)-3-amino-propionate, methyl N-(2-cyanoethyl)-N-(2-hydroxyethyl)-3-aminopropionate, methyl N-(2-acetoxyethyl)-N-(2-cyano-ethyl)-3-aminopropionate, N-(2-cyanoethyl)-N-ethyl-3-aminopropiononitrile, N-(2-cyanoethyl)-N-(2-hydroxyethyl)-3-aminopropiononitrile, N-(2-acetoxyethyl)-N-(2-cyano-ethyl)-3-aminopropiononitrile, N-2-cyanoethyl)-N-(2-formyloxyethyl)-3-aminopropiononitrile, N-(2-cyanoethyl)-N-(2-methoxyethyl)-3-aminopropiononitrile, N-(2-cyano-ethyl)-N-[2(methoxymethoxy)ethyl]-3-aminopropiononitrile, N-(2-cyanoethyl)-N-(3-hydroxy-1-propyl)-3-aminopropiono-nitrile, N-(3-acetoxy-1-propyl)-N-(2-cyanoethyl)-3-amino-propiononitrile, N-(2-cyanoethyl)-N-(3-formyloxy-1-propyl)-3-aminopropiononitrile, N-(2-cyanoethyl)-N-tetrahydro-furfuryl-3-aminopropiononitrile, N,N-bis(2-cyanoethyl)-3-aminopropiononitrile, diethylaminoacetonitrile, N,N-bis(2-hydroxyethyl)aminoacetonitrile, N,N-bis(2-acetoxyethyl)-aminoacetonitrile, N,N-bis(2-formyloxyethyl)aminoacetonitrile, N,N-bis(2-methoxyethyl)aminoacetonitrile, N,N-bis[2-(methoxymethoxy)-ethyl]aminoacetonitrile, methyl N-cyanomethyl-N-(2-methoxy-ethyl)-3-aminopropionate, methyl N-cyanomethyl-N-(2-hydroxyethyl)-3-aminopropionate, methyl N-2-acetoxyethyl)-N-cyanomethyl-3-aminopropionate, N-cyanomethyl-N-(2-hydroxyethyl)aminoacetonitrile, N-(2-acetoxyethyl)-N-(cyanomethyl)aminoacetonitrile, N-cyanomethyl-N-(2-formyloxyethyl)aminoacetonitrile, N-cyanomethyl-N-(2-methoxyethyl)aminoacetonitrile, N-cyanomethyl-N-[2-(methoxymethoxy)ethyl]aminoacetonitrile, N-(cyanomethyl)-N-(3-hydroxy-1-propyl)aminoacetonitrile, N-(3-acetoxy-1-propyl)-N-(cyanomethyl)aminoacetonitrile, N-cyanomethyl-N-(3-formyloxy-1-propyl)aminoacetonitrile, N,N-bis(cyano-methyl)aminoacetonitrile, 1-pyrrolidinepropiononitrile, 1-piperidinepropiononitrile, 4-morpholinepropiononitrile, 1-pyrrolidineacetonitrile, 1-piperidineacetonitrile, 4-morpholineacetonitrile, cyanomethyl 3-diethylamino-propionate, cyanomethyl N,N-bis(2-hydroxyethyl)-3-amino-propionate, cyanomethyl N,N-bis(2-acetoxyethyl)-3-amino-propionate, cyanomethyl N,N-bis(2-formyloxyethyl)-3-amino-propionate, cyanomethyl N,N-bis(2-methoxyethyl)-3-amino-propionate, cyanomethyl N,N-bis[2-(methoxymethoxy)ethyl]-3-aminopropionate, (2-cyanoethyl) 3-diethylaminopropionate, (2-cyanoethyl) N,N-bis(2-hydroxyethyl)-3-aminopropionate, (2-cyanoethyl) N,N-bis(2-acetoxyethyl)-3-aminopropionate, (2-cyanoethyl) N,N-bis(2-formyloxyethyl)-3-aminopropionate, (2-cyanoethyl) N,N-bis(2-methoxyethyl)-3-aminopropionate, (2-cyanoethyl) N,N-bis[2-(methoxymethoxy)ethyl]-3-amino-propionate, cyanomethyl 1-pyrrolidinepropionate, cyanomethyl 1-piperidinepropionate, cyanomethyl 4-morpholinepropionate, (2-cyanoethyl) 1-pyrrolidinepropionate, (2-cyanoethyl) 1-piperidinepropionate, and (2-cyanoethyl) 4-morpholine-propionate can be exemplified.
As the nitrogen-containing basic compounds, preferably, e.g., 1,5-diazabicyclo[4.3.0]-5-nonene, 1,8-diazabicyclo-[5.4.0]-7-undecene, 1,4-diazabicyclo[2.2.2]octane, 4-dimethylaminopyridine, 1-naphthylamine, piperidines, hexamethylenetetramine imidazoles, hydroxypyridines, pyridines, anilines, hydroxyalkylanilines, 4,4′-diamino-diphenyl ether, pyridinium p-toluenesulfonate, 2,4,6-trimethylpyridinium p-toluenesulfonate, tetramethylammonium p-toluenesulfonate, tetrabutylammonium lactate, tri(cyclo)alkylamines, e.g., triethylamine, tributylamine, tripentylamine, tri-n-octylamine, tri-i-octylamine, tris(ethylhexyl)amine, tridecylamine, tridodecylamine, tri-n-propylamine, tri-n-butylamine, tri-n-pentylamine, tri-n-hexylamine, tri-n-heptylamine, tri-n-octylamine, tri-n-nonylamine, tri-n-decylamine, cyclohexyldimethylamine, methyldicyclohexylamine, ethylenediamine, N,N,N′,N′-tetramethylethylenediamine, tetramethylenediamine, hexamethylenediamine, 4,4′-diaminodiphenylmethane, 4,4′-diaminodiphenyl ether, 4,4′-diaminobenzophenone, 4,4′-diaminodiphenylamine, 2,2-bis(4-aminophenyl)propane, 2-(3-aminophenyl)-2-(4-aminophenyl)propane, 2-(4-aminophenyl)-2-(3-hydroxyphenyl)propane, 2-(4-aminophenyl)-2-(4-hydroxyphenyl)propane, 1,4-bis[1-(4-aminophenyl)-1-methylethyl]benzene, 1,3-bis[1-(4-aminophenyl)-1-methylethyl]benzene, bis(2-dimethylaminoethyl)ether, bis(2-diethylaminoethyl)ether, N,N,N′,N′-tetrakis(2-hydroxypropyl)ethylenediamine, and tricyclohexylamine, aromatic amines, e.g., aniline, N-methylaniline, N,N-dimethylaniline, 2-methylaniline, 3-methylaniline, 4-methylaniline, 4-nitroaniline, diphenylamine, triphenylamine, naphthylamine, and 2,6-diisopropylaniline, polyethyleneimine, polyallyl-amine, polymer of 2-dimethylaminoethylacrylamide, N-t-butoxycarbonyldi-n-oatylamine, N-t-butoxycarbonyl-di-n-nonylamine, N-t-butoxycarbonyldi-n-decylamine, N-t-butoxycarbonyldicyclohexylamine, N-t-butoxycarbonyl-1-adamantylamine, N-t-butoxycarbonyl-N-methyl-1-adamantyl-amine, N,N-di-t-butoxycarbonyl-1-adamantylamine, N,N-di-t-butoxycarbonyl-N-methyl-1-adamantylamine, N-t-butoxy-carbonyl-4,4′-diaminodiphenylmethane, N,N′-di-t-butoxy-carbonylhexamethylenediamine, N,N,N′,N′-tetra-t-butoxy-carbonylhexamethylenediamine, N,N′-di-t-butoxycarbonyl-1,7-diaminoheptane, N,N′-di-t-butoxycarbonyl-1,8-diaminooctane, N,N′-di-t-butoxycarbonyl-1,9-diaminononane, N,N′-di-t-butoxyoarbonyl-1,10-diaminodecane, N,N′-di-t-butoxycarbonyl-1,12-diaminododecane, N,N′-di-t-butoxy-carbonyl-4,4′-diaminodiphenylmethane, imidazoles, e.g., N-t-butoxycarbonylbenzimidazole, N-t-butoxycarbonyl-2-methylbenzimidazole, N-t-butoxycarbonyl-2-phenyl-benzinmidazole, formamide, N-methylformamide, N,N-dimethyl-formamide, acetamide, N-methylacetamide, N,N-dimethyl-acetamide, propionamide, benzamide, pyrrolidone, N-methylpyrrolidone, urea, methylurea, 1,1-dimethylurea, 1,3-dimethylurea, 1,1,3,3-tetramethylurea, 1,3-diphenylurea, tri-n-butylthiourea, imidazole, 4-methylimidazole, 4-methyl-2-phenylimidazole, benzimidazole, and 2-phenyl-benzimidazole, pyridines, e.g., pyridine, 2-methylpyridine, 4-methylpyridine, 2-ethylpyridine, 4-ethylpyridine, 2-phenylpyridine, 4-phenylpyridine, 2-methyl-4-phenyl-pyridine, nicotine, nicotinic acid, nicotinic acid amide, quinoline, 4-hydroxyquinoline, 8-oxyquinoline, and acridine, piperazines, e.g., piperazine and 1-(2-hydroxyethyl)-piperazine, pyrazine, pyrazole, pyridazine, quinozaline, pyrine, pyrrolidine, piperidine, 3-piperidino-1,2-propane-diol, morpholine, 4-methylmorpholine and 1,4-dimethyl-piperazine can be exemplified.
Of these compounds, nitrogen-containing basic compounds such as 1,5-diazabicyclo[4.3.0]-5-nonene, 1,8-diazabicyclo-[5-4-0]-7-undecene, 1,4-diazabicyclo[2.2.2]octane, 4-dimethylaminopyridine, 1-naphthylamine, piperidine, 4-hydroxypiperidine, 2,2,6,6-tetramethyl-4-hydroxy-piperidine, hexamethylenetetramine, imidazoles, hydroxypyridines, pyridines, 4,4′-diaminodiphenyl ether, triethylamine, tributylamine, tripentylamine, tri-n-octylamine, tris(ethylhexyl)amine, tridodecylamine, N,N-dibydroxyethylaniline, and N-hydroxyethyl-N-ethylaniline are especially preferred.
As solvents not having a hydroxyl group, e.g., propylene glycol monomethyl ether acetate, ethylethoxy propionate, 2-heptanone, γ-butyrolactone, cyclohexanone, butyl acetate, N-methylpyrrolidone, N,N-dimethylacetamide, and dimethyl sulfoxide are exemplified. Of these solvents, propylene glycol monomethyl ether acetate, ethylethoxy propionate, 2-heptanone, γ-butyrolactone, cyclohexanone and butyl acetate are preferred, and propylene glycol monomethyl ether acetate, ethylethoxy propionate and 2-heptanone are more preferred.
Synthesis of Resin Synthesis Example 1 Synthesis of Resin (1)
2-Ethyl-2-adamantyl methacrylate, dihydroxyadamantane methacrylate, and norbornane lactone methacrylate in proportion of 40/20/40 (molar ratio) were prepared and dissolved in propylene glycol monomethyl ether acetate/propylene glycol monomethyl ether (60/40, mass ratio) to prepare 450 g of a solution having solid concentration of 22 mass %. The following shown compound (C) and a polymerization initiator, V-601 (manufactured by Wako Pure Chemical Industries Ltd.) were added to the solution each in an amount of 0.1 mol %, and the reaction solution was dripped to 50 g of a mixed solution of propylene glycol monomethyl ether acetate/propylene glycol monomethyl ether (60/40, mass ratio) heated at 80° C. for 6 hours in a nitrogen atmosphere. After completion of dripping, the reaction solution was stirred for 2 hours, whereby reaction solution (7) was obtained. After termination of the reaction, the temperature of reaction solution (7) was lowered to room temperature, and the reaction solution was crystallized in 4.5 time amount of a mixed solvent of hexane/ethyl acetate (50/50, mass ratio), and precipitated white powder was filtered, thus an object resin (7) was recovered.
An organic anti-reflection film ARC29A (manufactured by Nissan Chemical Industries, Ltd.) was coated on a silicone wafer, and the coating was baked at 205° C. for 60 seconds to thereby form an anti-reflection film having a thickness of 78 nm. The above-prepared positive resist solution was coated on the anti-reflection film and baked at 115° C. for 60 seconds, whereby a resist film having a thickness of 200 nm was formed. The obtained wafer was subjected to pattern exposure with an ArF excimer laser scanner (PAS5500/1100, NA0.75, σo/σi=0.85/0.55, manufactured by ASLM). After that, the wafer was heated at 120° C. for 60 seconds, and subjected to development with a tetramethylammonium hydroxide aqueous solution (2.38 mass %) for 30 seconds, rinsed with pure water, and spin-dried to obtain a resist pattern.
An organic anti-reflection film ARC29A (manufactured by Nissan Chemical Industries, Ltd.) was coated on a silicone wafer, and the coating was baked at 205° C. for 60 seconds to thereby form an anti-reflection film having a thickness of 78 nm. The above-prepared positive resist solution was coated on the anti-reflection film and baked at 115° C. for 60 seconds, whereby a resist film having a thickness of 150 nm was formed. The obtained wafer was subjected to immersion exposure with an ArF excimer laser immersion scanner (NA 0.75). As the immersion liquid, super pure water having impurities of 5 ppb or less was used. After that, the wafer was heated at 120° C. for 60 seconds, and subjected to development with a tetramethylammonium hydroxide aqueous solution (2.38 mass %) for 30 seconds, rinsed with pure water, and spin-dried to obtain a resist pattern
1. A positive resist composition, which comprises a resin having a structure showing a basicity and capable of increasing the solubility in an alkali developer by the action of an acid, and wherein the resin has the structure showing a basicity at a side chain, the resin has a lactone group, and the resin comprises a repeating unit having a partial structure containing an alicyclic hydrocarbon represented by formula (pI) or (pII):
wherein Z represents an atomic group necessary to form an alicyclic hydrocarbon group with a carbon atom; R11 represents a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group or a sec-butyl group; R12, R13 and R14 each represents a straight chain or branched chain alkyl group having from 1 to 4 carbon atoms, or an alicyclic hydrocarbon group, provided that at least one of R12 to R14 represents an alicyclic hydrocarbon group; and
wherein the resin comprises a repeating unit represented by formula (AI) as the repeating unit having the lactone group:
wherein Rb0 represents a hydrogen atom, a halogen atom, or an alkyl group having from 1 to 4 carbon atoms; A′ represents a single bond, an ether group, an ester group, a carbonyl group, an alkylene group, or a divalent linking group combining these groups; and B2 represents a group represented by formula (Lc) or formula (III-1):
wherein Ra1, Rb1, Rc1, Ra1 and Re1 each represents a hydrogen atom or an alkyl group; m and n each represents an integer of from 0 to 3, and m+n is from 2 to 6; R1b, R2b, R3b, R4b, and R5b each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxyl group, an alkoxycarbonyl group, an alkylsulfonylimino group or an alkenyl group, and two of R1b to R5b may be bonded to form a ring.
2. The positive resist composition as claimed in claim 1, wherein the structure showing a basicity is a structure including at least one selecting from the group consisting of a primary, secondary or tertiary aliphatic amine, an aromatic amine, and a heterocyclic amine.
3. The positive resist composition as claimed in claim 1, which comprises (B) a compound capable of generating an acid upon irradiation with an actinic ray or radiation.
4. The positive resist composition as claimed in claim 1, wherein the resin comprises a repeating unit represented by any of formulae (P1), (P2) and (P3) as the repeating unit having the structure showing a basicity:
wherein X1 represents a hydrogen atom or an alkyl group; X2 represents a single bond or a divalent linking group; R1 represents a structure showing basicity; R2 represents a hydrogen atom or an alkyl group, and R1 and R2 may be linked to each other to form a ring.
5. The positive resist composition as claimed in claim 1, wherein the resin comprises a repeating unit represented by any of formulae (P4), (P5), (P6), (P7), (P8), (P9), and (P10) as the repeating unit having the structure showing a basicity:
wherein X1 represents a hydrogen atom or an alkyl group; R3 to R9 each independently represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group, or an aralkyl group; R3 and R4 may be bonded to each other to form a ring; R5 and R6 and R7 and R8 may be bonded to each other to form a ring; and Z represents alkylene or —NH—.
6. The positive resist composition as claimed in claim 1, wherein in formula (pI), R11 represents a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an isobutyl group, or a sec-butyl group, and the content of the repeating unit having a partial structure containing an alicyclic hydrocarbon represented by formula (pI) and/or (pII) is from 20 to 65 mol % in all the repeating structural units of the resin.
7. The positive resist composition as claimed in claim 1, wherein the resin contains only the repeating unit having a partial structure containing an alicyclic hydrocarbon represented by formula (pI) and/or (pII) as an acid-decomposable group, and in formula (pI), R11 represents a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an isobutyl group, or a sec-butyl group.
8. A pattern-forming method, which comprises forming a resist film with the positive resist composition as claimed in claim 1; and exposing and developing the resulting resist film.
9. The pattern-forming method as claimed in claim 8, wherein the resist film is subjected to an exposure through an immersion liquid.
10. A pattern-forming method which comprises the steps of:
providing a positive resist composition as claimed in claim 3;
forming a resist film with the positive resist composition;
pattern-wise exposing the resist film through an immersion liquid; and
developing the resulting resist film.
US20060199100A1 true US20060199100A1 (en) 2006-09-07
US8741537B2 true US8741537B2 (en) 2014-06-03
JP5605029B2 (en) 2010-07-06 2014-10-15 住友化学株式会社 Compound, resin and resist composition
JP2012087294A (en) 2010-09-21 2012-05-10 Sumitomo Chemical Co Ltd Resin, resist composition, and manufacturing method of resist pattern
JP5733167B2 (en) * 2011-11-17 2015-06-10 信越化学工業株式会社 Negative pattern forming method and a negative resist composition
JP6002378B2 (en) 2011-11-24 2016-10-05 東京応化工業株式会社 Method for producing a polymer
JP6307250B2 (en) 2013-11-15 2018-04-04 東京応化工業株式会社 Resist composition, a resist pattern forming method, a polymer compound, the compound
EP0652485A1 (en) 1993-11-08 1995-05-10 AT&amp;T Corp. A process for fabricating a device
CA2152236A1 (en) 1994-06-22 1995-12-23 Qian Tang Positive photoresist
EP0773478A1 (en) 1995-11-10 1997-05-14 Matsushita Electric Industrial Co., Ltd. Patterning material and patterning method
KR19980080792A (en) 1997-03-27 1998-11-25 무네유키마사유키 Deep ultraviolet positive-working photoresist composition for exposure
JPH10326013A (en) 1997-03-27 1998-12-08 Fuji Photo Film Co Ltd Positive photoresist composition for exposure to far ultraviolet ray
JP2002162746A (en) 2000-09-18 2002-06-07 Jsr Corp Radiation sensitive composition
TW200426511A
WO2005003198A1 (en) 2003-06-26 2005-01-13 Jsr Corporation Photoresist polymer compositions
JP2005023092A (en) 2003-05-06 2005-01-27 Mitsubishi Rayon Co Ltd Copolymer
JP2005055890A (en) 2003-07-24 2005-03-03 Fuji Photo Film Co Ltd Positive photosensitive composition and method of forming pattern using the same
KR20050024620A (en) 2003-09-03 2005-03-10 마츠시타 덴끼 산교 가부시키가이샤 Sulfonamide compound, polymer compound, resist materials and pattern formation method
JPH0850356A (en) 1994-06-22 1996-02-20 Ciba Geigy Ag Positive type photoresist
EP1517181A1 (en) 2003-09-03 2005-03-23 Matsushita Electric Industrial Co., Ltd. Sulfonamide compound, polymer compound, reist material and pattern formation method
European Search Report dated Sep. 28, 2006.
Notification of Reasons for Refusal issued Aug. 31, 2010 in counterpart Japanese Application No. 2006-058328.
Office Action dated Feb. 25, 2013 in Korean Patent Application No. 10-2006-0020705.
Office Action dated Jul. 25, 2012 in Taiwanese Patent Application No. 095107183.
Office Action dated Jul. 3, 2012 in Japanese Application No. 2010-244822.
Office Action dated Jun. 7, 2013 issued by the Taiwanese Patent Office in counterpart Taiwanese Patent Application No. 095107183.
Office Action dated May 23, 2011 in European Patent Application No. 06004404.7.
Office Action dated Nov. 20, 2012 in Taiwanese Patent Application No. 095107183.
Office Action dated Sep. 27, 2013, issued by the Korean Intellectual Property Office in counterpart Korean Application No. 10-2006-0020705.
Office Action from the Korean Intellectual Property Office dated Jan. 24, 2014 in counterpart Korean Application No. 10-2006-0020705.
Partial European Search Report dated Jul. 6, 2006.
US20060199100A1 (en) 2006-09-07 application
JP2008268743A (en) 2008-11-06 Positive photosensitive composition and pattern forming method using the same
JP2009199021A (en) 2009-09-03 Positive resist composition and pattern forming method using the same