摘要:
A process for producing a solution of a basic or non-basic sulfonium compound (A) of formulae II-V: ##STR1## wherein R.sup.5, R.sup.6 and R.sup.7 each independently represent a C.sub.1 -C.sub.18 alkyl, aryl or heteroaryl group or an aryl group mono-, di- or tri-substituted with an alkyl, an alkylaryl, an aryl, a halogen, an alkoxy, a phenoxy, a thiophenol, a phenylsulfonyl or a phenylsulphenyl; Y represents (CH.sub.2).sub.n (wherein n is 0 or 1), O or S; R.sup.8 and R.sup.9 represent a C.sub.1 -C.sub.4 alkyl, alkoxy or a halogen; R.sup.10 and R.sup.11 represent a C.sub.1 -C.sub.4 alkyl, alkoxy or a halogen; n is 5 or 6; and X.sub.2.sup.- represents a basic anion having a pK.sub.B value of -3 to +5; comprising the steps of: (a) dissolving a sulfonium salt (B) in a metal-ion free polar or non-polar solvent to form a solution, said sulfonium salt (B) being selected from said formulae II-V, wherein R.sup.5 to R.sup.11, Y and n of said sulfonium salt (B) have the sane meaning as above and X.sub.2.sup.- represents a non-nucleophilic anion; (b) contacting said solution for a sufficient amount of time with a basic ion-exchange resin having a quaternary ammonium group to replace the anion of (B) with a hydroxide ion and to form a sulfonium hydroxide solution; (c) separating said sulfonium hydroxide solution from the resin; and optionally (d) adding an active hydrogen containing compound or its base-labile precursor to said sulfonium hydroxide solution to yield a solution of the sulfonium compound (A) wherein X.sub.2.sup.- represents a basic anion other than a hydroxy ion.
摘要:
A novel positive-working radiation-sensitive mixture having a high sensitivity to radiation in a short-wavelength UV region is provided which can be developed in an aqueous alkaline solution, has a stable acid latent image and is used for the production of a semiconductor. The mixture comprises, as indispensable components, a) a binder insoluble in water but soluble in an aqueous alkaline solution, b) a compound having at least one bond cleavable with an acid, c) a compound capable of producing an acid upon radiation, and d.sub.1) a basic ammonium compound or d.sub.2) a basic sulfonium compound.
摘要:
A chemically amplified radiation sensitive composition comprising: (a) a copolymer such as poly(4-hydroxystyrene-co-styrene), (b) a dissolution inhibitor such as polyacetal or (b') a crosslinking agent, (c) a radiation sensitive compound capable of generating an acid upon exposure to actinic radiation, (d) a radiation sensitive base capable of stabilizing the width of lines throughout steps from exposure to post-exposure bake treatment, and (e) a solvent for dissolving the components (a) to (d), can realize fine lines and spaces down to 0.22 microns, for example, using KrF laser, and possesses excellent heat and etch resistance and adhesiveness to substrates, and produces patterns with low standing waves arising due to substrate reflectiveness of exposed light.
摘要:
A chemically amplified resist material comprising: a) a homopolymer or a copolymer of hydroxystyrene or hydroxystyrene partly protected by a group sensitive to an acid such as a tetrahydropyranyl or t-butoxycarbonyl group, b) a dissolution inhibitor such as poly(N,O-acetal) or phenol or bisphenol protected by a group cleavable with an acid, c) a photosensitive compound capable of generating an acid upon exposure, d) a base capable of degrading upon radiation to regulate the line width in a period between the exposure step and the processing steps after exposure, e) a low-molecular weight phenolic or polyphenolic compound having a structure represented by the following general formula or a mixture of the phenolic or polyphenolic compounds: ##STR1## where n is an integer of 1 to 5, m is an integer of 0 to 4, n+m.ltoreq.5, and p is an integer of 1 to 10, each R is a C.sub.1 -C.sub.12 alkyl group or an unsubstituted or substituted cycloalkyl group or a C.sub.1 -C.sub.5 hydroxyalkyl group, provided that hydrogen atoms may be substituted with a halogen atom and, when m is not less than 2, each R may be the same or different; A represents a hydrocarbon atomic grouping, having a valence of p, including an unsubstituted or substituted C.sub.1 -C.sub.100 alicyclic, chain aliphatic, or aromatic hydrocarbon or a combination thereof with the carbon atoms being optionally substituted with an oxygen atom, provided that when p is 1, A may represent a hydrogen atom and, when p is 2, A may represent --S--, --SO--, --SO.sub.2 --, --O--, --CO--, or a direct bond, and f) a solvent for dissolving the components a) to e).
摘要:
A radiation-sensitive mixture for use in the production of semiconductor elements, which has high sensitivity and high resolution, which can be developed by an aqueous alkaline solution, and which is based on a novel concept in that a stable acid latent image is controlled by using a radiation-decomposable base.The mixture is characterized by comprising as essential components a) a binder which is insoluble in water but soluble in an aqueous alkaline solution; b.sup.1) a compound having at least one bond which can be cleaved by an acid, or b.sup.2) a compound having at least one bond which is crosslinked with the compound a) by an acid; c) a compound which generates an acid when irradiated; and d) a basic iodonium compound.
摘要:
A colored, photosensitive resin composition of a pigment dispersing-type is disclosed.The colored, photosensitive resin composition is characterized by containing (a) a polymer having alcohlic or phenolic hydroxyl groups, (b) a compound capable of producing a nitrene when irradiated with an actinic radiation, (c) a pigment, and (d) a solvent. Preferably, the composition further contains (e) a heat crosslinking agent and/or (f) a compound having a polymerizable double bond in addition to the above ingredients.According to the present invention, the production of a color filter need not be performed in an inert gas atmosphere, does not require an oxygen barrier film and does not require heating during the period of from the exposure step to the development step. Thus, the use of the composition permits the color filter production steps to be made significantly simple so that the composition provides a great value in industrial utilization.
摘要:
Acid-labile group protected hydroxystyrene polymers having recurrent pendant groups such as 1-(2-methanecarbonyl oxyethoxy)ethoxy group and 1-(2-N-methylcarbamatoethoxy) ethoxy group. A resist containing the polymer, a photo acid generator, a base, additives and a solvent is sensitive to UV, electron beam and X-ray. In the resist, acid is formed in the exposed area during irradiation, which deprotects acid-labile group catalytically during application of post-exposure baking. Positive patterns are formed after development using an alkaline solution.
摘要:
A radiation-sensitive composition is disclosed which includes (a) a binder insoluble in water but soluble in or capable of being swelled in an aqueous alkali solution, (b) a dissolution inhibitor composed of (b1) a poly(N,O-acetal) having a general formula: ##STR1## wherein R.sup.3 is alkyl or substituted or unsubstituted aryl, R.sup.4 is a divalent group selected from alkylene, cycloalkylene, alkene or alkyne, R.sup.5 is alkyl, alkene, alkyne or cycloalkyl, X is --OCO--, --CO-- or --NHCO--, and p is a number not less than 1, and/or (b2) a phenol compound having a hydroxyl group which is protected by a group which can be cleaved in the presence of an acid, (c) a photosensitive compound capable of generating an acid when exposed to an active radiation, (d) a base capable of being decomposed when exposed to an active radiation to form a neutral compound derived therefrom, (e) a plasticizer, and (f) a solvent.
摘要:
A material for the formation of a pattern is provided which has a wide exposure latitude and is less liable to cause a dimensional change of a pattern with a change in exposure. The material comprises (A) a compound having a capability of producing an acid upon irradiation with an active beam, (B) a compound capable of producing a base or increasing its basicity, (C) a compound having at least one bond clearable with an acid and/or (D) a compound insoluble in water but soluble in an aqueous alkaline solution.
摘要:
A radiation-sensitive composition comprising:an acid-generating compound capable of generating an acid upon exposure to radiation and represented by the formula (I): ##STR1## wherein X, Y and R.sup.1 to R.sup.5 have the following meanings: X and Y: independently a direct bond, C.sub.1 -C.sub.8 alkylene, C.sub.1 -C.sub.4 alkene, --O--R.sup.11 --O-- (wherein R.sup.11 is an alkylene group having 1 to 4 carbon atoms), --NH--, --O--, --S--, --SO.sub.2 --, --CO--, --COO-- or --CONR.sup.12 -- (wherein R.sup.12 is a hydrogen atom, C.sub.1 -C.sub.8 alkyl, alkylaryl, halogenated alkyl, halogenated aryl, a halogen atom, alkoxy, phenoxy, alkylsulfonyl-oxy, halogenated alkylsulfonyl-oxy, or substituted or unsubstituted arylsulfonyl-oxy);R.sup.1 to R.sup.4 : a hydrogen atom, C.sub.1 -C.sub.18 alkyl, aryl, hetero-aryl, a halogen atom, alkyl-substituted or aryl-substituted amino, alkyl-substituted or aryl-substituted amido, nitro, cyano, aldehyde, acetal, alkoxy, phenoxy, alkylsulfonyl-oxy, or substituted or unsubstituted arylsulfonyl-oxy;R.sup.5 : a hydrogen atom, alkyl, aryl, halogenated alkyl, halogenated aryl, halogenated hetero-aryl, alkylsulfonyl-oxy, halogenated alkylsulfonyl-oxy, or substituted or unsubstituted arylsulfonyl-oxy;a water-insoluble but aqueous alkaline solution-soluble binder; anda cross-linking compound capable of reacting with said binder in the presence of said acid to cause the binder to be cross-linked. Further, a radiation-sensitive recording medium can be obtained by forming a layer made of the radiation-sensitive composition on a substrate.