摘要:
Provided is a mask blank surface treatment method for surface-treating, using a treatment liquid, a surface of a thin film, to be formed into a transfer pattern, of a mask blank having the thin film on a substrate. The thin film is made of a material that can be etched by ion-based dry etching. The concentration of an etching inhibitor contained in the treatment liquid is 0.3 ppb or less.
摘要:
A photomask blank for use in the manufacture of a photomask adapted to be applied with exposure light having a wavelength of 200 nm or less has a thin film on a transparent substrate. The thin film is made of a material containing a transition metal, silicon, and carbon and comprising silicon carbide and/or a transition metal carbide.
摘要:
A thin film composed of a material containing a metal and silicon is formed on a transparent substrate, and a thin film pattern is formed by patterning the thin film. Then, the main surface and the side walls of the thin film pattern are previously modified so as to prevent the transfer characteristics of the thin film pattern from changing more than predetermined even in the case where exposure light with a wavelength of 200 nm or less is cumulatively applied onto the thin film pattern which has been formed. The main surface and the side walls are modified by, for instance, performing heat treatment to the main surface and the side walls at 450-900° C. in the atmosphere containing oxygen.
摘要:
A photomask blank for producing a photomask to which an ArF excimer laser light is applied. The blank includes a light transmissive substrate on which a thin film having a multilayer structure is provided. The thin film has a light-shielding film in which a back-surface antireflection layer, a light-shielding layer and a front-surface antireflection layer are laminated in this order. The light-shielding layer comprises chromium and nitrogen, and the chromium content is more than 50 atomic %. The front-surface antireflection layer and the back-surface antireflection layer each has an amorphous structure made of a material comprising chromium, nitrogen, oxygen and carbon. The chromium content ratio of the front-surface antireflection layer and the back-surface antireflection layer is 40 atomic % or less. A first sum of nitrogen content and oxygen content of the back-surface antireflection layer is less than a second sum of nitrogen content and oxygen content of the front-surface antireflection layer.
摘要:
According to certain embodiments, a mask blank for an electron beam writing is provided, capable of forming a resist pattern of a 3-dimensional topology through an one-time writing. The mask blank includes a substrate, a thin film formed on the substrate, and an electron beam resist film formed on the thin film. The electron beam resist film is made of a laminated film including at least a lower resist film and an upper resist film. The lower resist film and the upper resist film have different resist sensitivities with respect to an electron beam.
摘要:
A photomask blank has a light shieldable film formed on a light transmitting substrate. The light shieldable film has a light shielding layer which is formed of molybdenum silicide metal containing molybdenum in a content greater than 20 atomic % and not greater than 40 atomic % and which has a thickness smaller than 40 nm, an antireflection layer formed on the light shielding layer in contact with the light shielding layer and formed of a molybdenum silicide compound containing at least one of oxygen and nitrogen, and a low reflection layer formed under the light shielding layer in contact with the light shielding layer.
摘要:
The present invention provides a photomask blank used for producing a photomask to which an ArF excimer laser light is applied, wherein: a light-shielding film is provided on a light transmissive substrate; the light-shielding film has a laminated structure in which a back-surface antireflection layer, a light-shielding layer and a front-surface antireflection layer are laminated in this order from the side close to the light transmissive substrate; the thickness of the entire light-shielding film is 60 nm or less; the back-surface antireflection layer is made of a film containing a metal and has a first etching rate; the front-surface antireflection layer is made of a film containing a metal and has a third etching rate; the light-shielding layer is made of a film containing the same metal as that contained in the back-surface antireflection layer or the front-surface antireflection layer and has a second etching rate that is lower than the first etching rate and the third etching rate; and the thickness of the light-shielding layer is 30% or less of the thickness of the entire light-shielding film.
摘要:
A washing apparatus is provided with a washing tub 2 whose rotating axis is in a horizontal direction or in a horizontally inclined direction, and has a concave and convex curve surface 22 installed on an inside wall surface of the washing tub 2 as well as has a baffle 25 protruding in the direction of the rotating axis installed. Then, by rotating the washing tub with a level of a cleaning liquid to be supplied to the washing tub 2 set to be higher than the rotating axis, a spurious non-gravity wash method is adopted in which damage to a washing article is small. In addition, by rotating the washing tub 2 with the level of the cleaning liquid to be supplied to the washing tub 2 set to be lower than the rotating axis, a beat wash method in which water saving effect is high is adopted.
摘要:
A mask blank for use in the manufacture of a transfer mask adapted to be applied with ArF exposure light is disclosed. The mask blank has a light-shielding film on a transparent substrate. The light-shielding film has an at least two-layer structure comprising a lower layer composed mainly of a material containing a transition metal, silicon, and nitrogen and an upper layer composed mainly of a material containing a transition metal, silicon, and nitrogen. The ratio of the etching rate of the lower layer to that of the upper layer is 1.0 or more and 5.0 or less in etching which is carried out by supplying a fluorine-containing substance to a target portion and irradiating charged particles to the target portion.
摘要:
Provided is a mask blank which enables EB defect correction to be suitably applied and which further enables a reduction in the thickness of a light-shielding film. A mask blank 10 is used for producing a transfer mask adapted to be applied with ArF exposure light and has a light-shielding film 2 on a transparent substrate 1. The light-shielding film 2 has an at least two-layer structure comprising a lower layer composed mainly of a material containing a transition metal, silicon, and at least one or more elements selected from oxygen and nitrogen and an upper layer composed mainly of a material containing a transition metal, silicon, and at least one or more elements selected from oxygen and nitrogen. The ratio of the etching rate of the lower layer to that of the upper layer is 1.0 or more and 20.0 or less in etching which is carried out by supplying a fluorine-containing substance to a target portion and irradiating charged particles to the target portion.