Abstract:
An immersion upper layer film composition is provided which exhibits sufficient transparency for the exposure wavelength 248 nm(KrF) and 193 nm(ArF), can form a protective film on the photoresist film without being intermixed with the photoresist film, is not eluted into water used during immersion exposure to maintain a stable film, and can be easily dissolved in an alkaline developer. The composition applied to coat on the photoresist film when using an immersion exposure device which is irradiated through water provided between a lens and the photoresist film, the composition comprises a resin forming a water-stable film during irradiation and being dissolved in a subsequent developer, and a solvent containing a monovalent alcohol having 6 or less carbon atoms, and the resin contains a resin component having an alcoholic hydroxyl group on the side chain containing a fluoroalkyl group on at least the carbon atom of ±-position.
Abstract:
Disclosed is an upper film-forming composition which enables to form a coating film on a photoresist without causing intermixing with the photoresist film and to maintain a stable coating film without dissolving into a medium used during immersion exposure. The upper film-forming composition is also capable to form an upper layer which enables to obtain a pattern shape that is not inferior to the one obtained by a process other than immersion exposure, namely a dry exposure and can be easily dissolved in an alkaline developer. Also disclosed is a copolymer containing a repeating unit having a group represented by the general formula (1) below, a repeating unit having a group represented by the general formula (2) below, at least one repeating unit (I) selected from repeating units having a carboxyl group, and a repeating unit (II) having a sulfo group, and having a weight average molecular weight of 2,000-100,000 determined by gel permeation chromatography. (1) (2) At least one of R
Abstract:
A radiation-sensitive resin composition that not only excels in fundamental properties as resist, such as sensitivity and resolution, but also with respect to both of line-and-space pattern and isolated space pattern, realizes extensive depth of focus (DOF) and is less in the line width change attributed to alteration of baking temperature, the limit line width free from any phenomenon of line pattern collapse of the radiation-sensitive resin composition being small. Further, there is provided a lactone copolymer being useful as a resin component of the radiation-sensitive resin composition. This lactone copolymer is represented by a copolymer of compound of the following formula (1-1), compound of the following formula (2-1) and compound of the following formula (3-1). This radiation-sensitive resin composition comprises the lactone copolymer (a) and radiation-sensitive acid generating agent (b).
Abstract:
PROBLEM TO BE SOLVED: To provide a cured film formable by low-temperature curing without harming the function of an organic semiconductor device, etc., and excellent in various properties such as resolution, electric insulation, thermal shock resistance and chemical resistance; and also to provide a method for producing the cured film, and a radiation sensitive resin composition capable of giving the cured film and suitable for an interlayer insulation film, a surface protective film, etc., of a semiconductor device. SOLUTION: The radiation sensitive resin composition for forming an insulating film comprises an alkali-soluble resin (A) having a phenolic hydroxyl group, a radiation sensitive acid generator (B), a crosslinking agent (C), an adhesion assistant (D) and an organic solvent (E), and has a solid concentration of 7-25 mass%. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an overlay film forming composition for liquid immersion from which a coating film having sufficient transmitting property at an exposure wavelength by KrF and ArF laser light, is formed on a photoresist without inducing intermixing with the photoresist film, and a stable coating film is maintained without elution in a liquid immersion medium in liquid immersion exposure. SOLUTION: The composition contains: a resin from which a film covering a photoresist film and stable in a liquid immersion medium is formed; and a solvent which dissolves the resin, wherein the resin contains at least one repeating unit selected from a group consisting of a repeating unit having a group expressed by a formula (1) at a side chain end, a repeating unit having a carboxyl group at a side chain end, and a repeating unit having a group expressed by a formula (2) at a side chain end, and the solvent contains a 7-10C monohydric alcohol. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a new polysiloxane that has high transparency to the radial rays of ≤200 nm wavelength, high resolution and excellent coating properties and is useful as a resin component for resists and bears a fluorine-containing norbornane skeleton and provide a radiation-sensitive resin composition including the same. SOLUTION: The polysiloxane comprises at least one of structural unit selected from a structural unit represented by formula (I) and a structural unit represented by formula (II) and at least one of structural unit selected from a structural unit represented by formula (III) and a structural unit represented by formula (IV) [wherein X 1 and X 2 are each H, a monovalent (halogenated) hydrocarbon, a halogen atom, or an amino; B is H or F; n and m are each 0 or 1, p is an integer of 1-10]. The radiation-sensitive resin composition includes the polysiloxane and the radiation-sensitive acid generator. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a new fluorine-containing unsaturated alcohol useful e.g. as a synthetic raw material for a polysiloxane having a fluorine-containing norbornane skeleton and suitable e.g. as a resin component of a resist having high transparency to the radiation of ≤193 nm wavelength and excellent resolution, sensitivity, developability, dry-etching resistance, etc., and enabling easy control of the solubility to an alkaline developing liquid and provide a method for the production of the alcohol. SOLUTION: The fluorine-containing unsaturated alcohol is expressed by formula (1) (x is an integer of 0-5; and y is an integer of 1-3). The fluorine-containing unsaturated alcohol is produced by the dehydrofluorination reaction of a fluorinated alcohol expressed by formula (i). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a radiation sensitive resin composition capable of forming a rectangular pattern free from a roundish head shape in micro-fabrication in a small film thickness by incorporating a copolymer containing specified repeating units, a radiation sensitive acid generating agent and a specified compound. SOLUTION: The radiation sensitive resin composition contains a copolymer containing repeating units of formulae I and II and/or a copolymer containing repeating units of formulae I and III, a radiation sensitive acid generating agent and a compound of formula IV. In the formulae I-III, R1, R2 and R8 are each H or methyl, R3 is t-butyl or the like and R9 is a 4-10C tertiary alkyl. In the formula IV, R10-R13 are each a 1-16C linear, branched or cyclic alky, 2-16C linear, branched or cyclic alkenyl or the like and R14 is a 5-16C monovalent hydrocarbon, 2-16C acyl or the like.