MASK PATTERN FORMING METHOD, FINE PATTERN FORMING METHOD, AND FILM DEPOSITION APPARATUS
First Claim
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1. A mask pattern forming method comprising:
- a resist film step of forming a resist film over a thin film;
a patterning step of processing the resist film into resist patterns having a predetermined pitch by photolithography;
a slimming step of performing slimming of the resist patterns; and
a film deposition step of forming an oxide film on the thin film and the resist patterns after an end of the slimming step in a film deposition apparatus by supplying a source gas and an oxygen radical or an oxygen-containing gas,wherein the slimming step and the film deposition step are continuously performed in the film deposition apparatus.
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Abstract
In a mask pattern forming method, a resist film is formed over a thin film, the resist film is processed into resist patterns having a predetermined pitch by photolithography, slimming of the resist patterns is performed, and an oxide film is formed on the thin film and the resist patterns after an end of the slimming step in a film deposition apparatus by supplying a source gas and an oxygen radical or an oxygen-containing gas. In the mask pattern forming method, the slimming and the oxide film forming are continuously performed in the film deposition apparatus.
360 Citations
20 Claims
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1. A mask pattern forming method comprising:
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a resist film step of forming a resist film over a thin film; a patterning step of processing the resist film into resist patterns having a predetermined pitch by photolithography; a slimming step of performing slimming of the resist patterns; and a film deposition step of forming an oxide film on the thin film and the resist patterns after an end of the slimming step in a film deposition apparatus by supplying a source gas and an oxygen radical or an oxygen-containing gas, wherein the slimming step and the film deposition step are continuously performed in the film deposition apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A mask pattern forming method comprising:
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a step of forming a coating on a thin film; a step of forming a resist film on the coating; a first patterning step of processing the resist film into first resist patterns including line parts arrayed at a first pitch by photolithography; a first slimming step of performing slimming of the first resist patterns; and a film deposition step of forming an aluminum oxide film at room temperature on the thin film and the first resist patterns after an end of the first slimming step by supplying a source gas and an oxygen-containing gas. - View Dependent Claims (15, 16, 17)
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18. A film deposition apparatus comprising:
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a process chamber arranged to hold a vacuum pressure and to process a semiconductor substrate; a source gas supplying unit arranged to supply a source gas to the process chamber; and an oxygen radical supplying unit arranged to supply an oxygen radical or an oxygen-containing gas to the process chamber, wherein the film deposition apparatus is arranged so that the source gas and the oxygen radical or the oxygen-containing gas are alternately supplied to the process chamber by the source gas supplying unit and the oxygen radical supplying unit, to form an oxide film over the semiconductor substrate on which resist patterns are formed, and wherein the film deposition apparatus is arranged to perform, before the oxide film is formed over the semiconductor substrate on which the resist patterns are formed, slimming of the resist patterns by supplying the oxygen radical to the process chamber by the oxygen radical supplying unit. - View Dependent Claims (19, 20)
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Specification