Abstract:
PROBLEM TO BE SOLVED: To prepare a substantially homogeneous polymer blend suitable for use in photoresist compositions for lithography. SOLUTION: The polymer blend is provided for use in the photoresist compositions (specifically, chemical amplification-type photoresists) for lithography. In a preferable embodiment, the polymer blend is substantially transparent for far-ultraviolet radiation (i.e., a radiation having >250 nm wavelengths including 157 nm, 193 nm and 248 nm wavelengths) and has improved photosensitivity and resolution. The respective processes for preparing and using the polymer blend are also provided as well as the photoresist compositions for lithography containing the polymer blend. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a resist composition having high resolution using a non-polymeric material. SOLUTION: A molecular resist composition containing a substituted oligosaccharide substituted with one acid-cleavable -OR group is provided. The substituted oligosaccharide contains 2 to 10 monosaccharides. The molecular resist is initially insoluble in a developer which may be an aqueous alkali solution or essentially consist of water, however, the resist may become soluble in a developer upon exposure to radiation having a wavelength of 193 nm or less and a post-exposure bake temperature from about room temperature to about 110°C. The resist material can render a developed image with a line/spacing not greater than 120 nm when the developer essentially consists of water or an aqueous alkali solution. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a photoresist composition containing a polymer having at least one methacrylate monomer and to provide a method of pattering a substrate using the photoresist composition. SOLUTION: The photoresist composition contains a methacrylate monomer of formula 1 where R 1 represents hydrogen (H), a linear or branched 1-20C alkyl group or a semi- or perfluorinated linear or branched 1-20C alkyl group; where R 2 represents an unsubstituted aliphatic group or a substituted aliphatic group having zero or one trifluoromethyl (CF 3 ) group bonded to each carbon of the substituted aliphatic group or a substituted or unsubstituted aromatic group; and where R 3 represents hydrogen (H), methyl (CH 3 ), trifluoromethyl (CF 3 ), difluoromethyl (CHF 2 ) or fluoromethyl (CH 2 F). COPYRIGHT: (C)2004,JPO
Abstract:
Blockcopolymere (BCPs) für Selbstorganisationsanwendungen, die eine lineare fluorierte Verknüpfungsgruppe L' aufweisen, die ein Paar von benachbarten Blöcken verbindet. Eine Dünnschicht, die ein BCP aufweist, das auf einer Unterschicht angeordnet ist und in Kontakt mit einer Atmosphäre steht, ist fähig, eine senkrecht ausgerichtete Domänenstruktur zu bilden, wenn die Unterschicht präferentiell von einer Domäne eines ansonsten identischen selbstorganisierten BCP benetzt wird, bei dem alle Fluoratome von L' durch Wasserstoff ersetzt sind. Das BCP kann ein BCP mit niedrigem chi-Wert oder mit hohem chi-Wert sein. Bei einer bevorzugten Ausführungsform weist das BCP einen ersten Block auf Styrolbasis auf und ein zweiter Block weist eine Carbonat- und/oder Ester-Wiederholungseinheit auf, die durch Ringöffnungspolymerisation eines cyclischen Carbonat- und/oder Estermonomers gebildet ist. Die Verknüpfungsgruppe L' weist eine niedrigere Oberflächenenergie als jeder der Polymerblöcke auf.