Abstract:
PROBLEM TO BE SOLVED: To provide an etchant composition with which, when collectively etching a laminate film consisting of an indium oxide-based coating film and a metal-based coating film, a reduction in a width of a formed fine line consisting of the indium oxide-based coating film and the metal-based coating film is small and mouse bites of the fine line are not caused.SOLUTION: An etchant composition for collectively etching a laminate layer consisting of an indium oxide-based coating film and a metal-based coating film consists of an aqueous solution containing (A) at least one or more kinds of oxidant components selected from ferric ion and cupric ion, (B) hydrochloric acid component, (C) at least one or more kinds of compound components selected from a group of compounds represented by following general formula (1) and straight or branched alcohols having 1 to 4 carbon atoms, and (D) at least one or more kinds of acid components selected from sulfuric acids or phosphoric acids. In the general formula (1), Rand Rare each independently hydrogen, or a straight or branched alkyl group having 1 to 4 carbon atoms, Ris a straight or branched alkylene group having 1 to 4 carbon atoms, and n is the number of 1 to 3.
Abstract:
PROBLEM TO BE SOLVED: To provide an etchant composition for a copper-containing material, which can form a fine pattern without causing a failure in the shape.SOLUTION: The etchant composition for the copper-containing material is formed of an aqueous solution which includes: (A) 0.1-15 mass% of at least one oxidizing agent component selected from a cupric ion and a ferric ion; (B) 0.1-20 mass% of hydrogen chloride; and (C) 0.001-5 mass% of a nonionic surface active agent which is expressed by formula (1): R-O-X-H (wherein R represents a 8-18 C alkyl group; and X represents a polyalkylene oxide group in which an ethylene oxide unit and a propylene oxide unit are polymerized in a random or block form), and has a number average molecular weight of 500-1,500.
Abstract:
PROBLEM TO BE SOLVED: To provide an etchant composition for a copper-containing material, which prevents a shape failure of a wire in a circuit with a fine pattern and can manufacture a printed wiring board (or film) that does not cause a short circuit. SOLUTION: The etchant composition for the copper-containing material is formed of an aqueous solution including: (A) 0.1 to 15 mass% of at least one oxidizing agent component selected from a cupric ion and a ferric ion; (B) 0.001 to 5 mass% of a glycol ether compound having one hydroxyl group; (C) 0.001 to 5 mass% of a compound containing at least one of ethylene oxide and propylene oxide added to active hydrogen of a (poly)amine compound; (D) 0.1 to 5 mass% of at least one phosphoric component selected from phosphoric acid and a phosphate; and (E) 0.1 to 10 mass% of at least one inorganic acid selected from hydrochloric acid and sulfuric acid, as indispensable components. COPYRIGHT: (C)2009,JPO&INPIT