Abstract:
Verfahren zur Herstellung eines Lithografiemaskenrohlings mit den Schritten: Bereitstellen eines Substrats; Ausbilden mindestens einer Lage aus einer Dünnschicht, die Molybdän, Silizium und Stickstoff enthält, auf dem Substrat; und Ausbilden einer Schicht zum Verhindern der Erzeugung von Ammoniumionen an mindestens einem Oberflächenabschnitt der Dünnschicht, wobei die Schicht zum Verhindern der Erzeugung von Ammoniumionen durch Ausführen einer Wärmebehandlung der Dünnschicht, die Molybdän, Silizium und Stickstoff enthält, in einer Atmosphäre hergestellt wird, die Sauerstoff enthält.
Abstract:
A lithography mask blank used as a material for producing a lithography mask includes at least one thin film which is formed on a substrate and has a desired function. The blank has a nitrogen-containing thin film as the above-mentioned thin film and an ammonium ion production preventing layer for preventing production of ammonium ions, which is formed on the nitrogen-containing thin film or at least at a surface portion of the nitrogen-containing thin film and which is exposed on the surface of the lithography mask after the lithography mask is manufactured.
Abstract:
A method for manufacturing a photomask blank (1) comprising forming a three-layer structure including thin films (3, 4, 5) of CrN/CrC/CrON on a transparent substrate (2) by reactive sputtering by the use of a sputtering target provided in a vacuum chamber, wherein the thin films are formed in an atmosphere of a mixture gas containing helium, and the rate of flow of the helium in the mixture gas is controlled so that the grain size of the CrC thin film which has the largest thickness may range from 3 to 7 nm. Such a photomask blank includes thin films of low film stress, has a good film quality, and can be produced with high yield and mass-produced.
Abstract:
PROBLEM TO BE SOLVED: To provide a mask blank suited for manufacturing substrate digging type phase shift masks, including a light-shielding film pattern of a tantalum-based material.SOLUTION: A mask blank 100 used for manufacturing substrate digging type phase shift masks has a configuration in which a light shielding film 8, and an etching mask film 5 are sequentially superposed on a translucent substrate 1. The light shielding film 8 is formed in contact with a translucent substrate 1, and comprises a material consisting primarily of tantalum and substantially including no oxygen. The etching mask film 5 comprises a material having the content of chromium of 45 at% or more and the content of oxygen of 30 at% or less.
Abstract:
PROBLEM TO BE SOLVED: To provide a mask blank and a photomask suitable for processes (such as a resist coating method, an etching method and a cleaning method) in a large mask for an FDP (flat panel display). SOLUTION: The mask blank for manufacturing an FPD device includes at least one of a light shielding film, and a semitransmitting film having a function of controlling the transmitted light quantity on a light transmitting substrate, wherein the light shielding film and the semitransmitting film show a square root average roughness Rq of 2.0 nm or less on the film surface. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To achieve resistance to the high-temperature water of 80°C concerning an optical semi-transmission film which is optically designed using nitrogen, metal, and silicon as main components. SOLUTION: In a phase shift mask blank, an optical semi-transmission film which has a predetermined transmission to an exposure wavelength, and is optically designed using nitrogen, metal, and silicon as main components is formed on a transparent substrate. The phase shift mask blank contains oxygen in the optical semi-transmission film composed mainly of nitrogen, metal, and silicon within the range of maintaining the optical characteristics of the optical design using nitrogen, metal, and silicon as main components, and has achieved an improved resistance to high-temperature water of the optical semi-transmission film composed mainly of nitrogen, metal and silicon. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PURPOSE:To provide a method for forming an electrode made of chrome film suited for easily forming a gate electrode which is superb in chemical resistance and its side surface is virtually in a uniform taper shape within a substrate. CONSTITUTION:The title method of an electrode 4b made of chrome film has a process for forming a chrome film 4 which contains at least one type of element selected from a group consisting of nitrogen, carbon, and fluorine on a substrate 1 and whose element content is changed in thickness direction so that an etching speed is higher at its upper-layer part than at its lower-layer part and a process for forming a specific resist pattern 5a on the chrome film 4. Then, it also includes a process for inclining the side surface of the chrome film 4 toward outside for the thickness direction by etching the chrome film 4 along the resist pattern 5a by a specific etching liquid and then forming the side surface of the chrome film 4 in taper shape so that it forms a sharp angle for the substrate surface.
Abstract:
PURPOSE:To obtain fine rugged patterns having a desired uniformly tapered shape on the flanks of projecting parts by forming metallic films having two- layered structures varying in etching speed on a substrate, forming fine resist patterns thereon and etching the patterns. CONSTITUTION:The metallic film 2 contg. chromium nitride and chromium carbonate having a desired film thickness is formed on a quartz glass substrate 1. The metallic film 3 which varies in the degree of nitriding, etc., from the film 2 and is higher in the etching rate than the film 2 is formed on the film 2. The resist film 4 is then formed on the film 3 and the fine patterns 4a are formed on the film 4. The chromium patterns 5 consisting of the chromium layers 2a which are inclined in the flanks toward the outer side in the depth direction and have a tapered shape and the chromium layers 3a having the perpendicular flanks are obtd. if the films 2, 3 are etched by using a prescribed etching liquid. The molds for forming the desired fine rugged patterns are obtd. in this way.