Patent ID: 6537735
Filing Date: 2003-03-25
Classification: B41C,B41M,G03F,H05K

Abstract:
A method for producing a predetermined resist pattern on a substrate, the method comprising: the patternwise application of infrared radiation to a precursor which comprises the substrate, having a coating thereon, the coating comprising a positive working composition; and the development of the pattern using a developer; wherein said composition comprises a polymeric substance having functional groups Q thereon, such that the functionalized polymeric substance has the property that it is developer insoluble prior to delivery of infrared radiation and developer soluble thereafter, wherein the functional groups Q do not comprise a naphthoquinone diazide or a benzoquinone diazide group, and either: (1) the functional groups Q are selected from groups which comprise amino, monoalkylamino, dialkylamino, amido, monoalkylamido, dialkylamido, chloro, fluoro, carbonyl, sulphinyl or sulphonyl moieties, or (2) the functionalised polymeric substance is defined by the formula Râ€”(Q)n, wherein R represents the polymer chain of the polymeric substance and (Q)n represents functional groups bonded thereto, wherein Q represents a group of formula â€”Tâ€”Z, wherein T represents a group of formula â€”Oâ€”X(Z)â€”Oâ€” wherein X represents a linking moiety and Z is a moiety which optionally hydrogen bonds to the polymer chain R of the same molecule or an adjacent molecule or molecules.