Patents by Inventor Yasunobu Onishi
Yasunobu Onishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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SEMICONDUCTOR DEVICE MANUFACTURING METHOD TO FORM RESIST PATTERN, AND SUBSTRATE PROCESSING APPARATUS
Publication number: 20110229826Abstract: This invention discloses a method to form a resist pattern on a to-be-processed substrate by immersion exposure. A resist film is formed on the central portion of the upper surface of the to-be-processed substrate, on a bevel portion of the upper surface, which is obtained by chamfering the peripheral portion of the to-be-processed substrate, and on the end portion of the to-be-processed substrate. Pattern exposure for forming the latent image of a desired pattern on the resist film is executed while a liquid whose refractive index is higher than that of air exists between the resist film and a constituent element of a projection optical system of an exposure apparatus, which is nearest to the to-be-processed substrate. The resist film formed on the end portion of the to-be-processed substrate is removed by supplying a rinse solution to the end portion of the to-be-processed substrate after executing pattern exposure.Type: ApplicationFiled: May 31, 2011Publication date: September 22, 2011Inventors: Daisuke KAWAMURA, Eishi Shiobara, Tomoyuki Takeishi, Kei Hayasaki, Yasunobu Onishi, Shinichi Ito, Tatsuhiko Higashiki -
Patent number: 7968272Abstract: This invention discloses a method to form a resist pattern on a to-be-processed substrate by immersion exposure. A resist film is formed on the central portion of the upper surface of the to-be-processed substrate, on a bevel portion of the upper surface, which is obtained by chamfering the peripheral portion of the to-be-processed substrate, and on the end portion of the to-be-processed substrate. Pattern exposure for forming the latent image of a desired pattern on the resist film is executed while a liquid whose refractive index is higher than that of air exists between the resist film and a constituent element of a projection optical system of an exposure apparatus, which is nearest to the to-be-processed substrate. The resist film formed on the end portion of the to-be-processed substrate is removed by supplying a rinse solution to the end portion of the to-be-processed substrate after executing pattern exposure.Type: GrantFiled: November 16, 2006Date of Patent: June 28, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Daisuke Kawamura, Eishi Shiobara, Tomoyuki Takeishi, Kei Hayasaki, Yasunobu Onishi, Shinichi Ito, Tatsuhiko Higashiki
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Publication number: 20110039214Abstract: A pattern forming method includes forming a photo resist film on a film to be processed, forming a protective film for protecting the photo resist film from an immersion liquid on the photo resist film by coating method, performing immersion exposure selectively to a region of part of the photo resist film via the immersion liquid, the immersion liquid being supplied onto the photo resist film, removing a residual substance including an affinitive part for the immersion liquid from the protective film after the forming the protective film and before the performing immersion exposure selectively to the region of part of the photo resist film, removing the protective film, and forming a pattern comprising the photo resist film by selectively removing an exposed region or a non-exposed region of the photo resist film.Type: ApplicationFiled: August 17, 2010Publication date: February 17, 2011Inventors: Shinichi ITO, Kentaro Matsunaga, Daisuke Kawamura, Yasunobu Onishi
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Patent number: 7794922Abstract: A pattern forming method includes forming a photo resist film on a film to be processed, forming a protective film for protecting the photo resist film from an immersion liquid on the photo resist film by coating method, performing immersion exposure selectively to a region of part of the photo resist film via the immersion liquid, the immersion liquid being supplied onto the photo resist film, removing a residual substance including an affinitive part for the immersion liquid from the protective film after the forming the protective film and before the performing immersion exposure selectively to the region of part of the photo resist film, removing the protective film, and forming a pattern comprising the photo resist film by selectively removing an exposed region or a non-exposed region of the photo resist film.Type: GrantFiled: May 11, 2006Date of Patent: September 14, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Shinichi Ito, Kentaro Matsunaga, Daisuke Kawamura, Yasunobu Onishi
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Patent number: 7687227Abstract: According to an aspect of the invention, there is provided a resist pattern forming method of forming a resist pattern by immersion exposure, comprising forming a resist film on a substrate to be treated, a contact angle between the resist film and an immersion liquid being a first angle, forming a first cover film on the resist film, a contact angle between the first cover film and the immersion liquid being a second angle which is larger than the first angle, forming a second cover film on the first cover film, a contact angle between the second cover film and the immersion liquid being a third angle which is smaller than the second angle, and forming a latent image on the resist film by the immersion exposure.Type: GrantFiled: December 27, 2005Date of Patent: March 30, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Eishi Shiobara, Daisuke Kawamura, Yasunobu Onishi, Shinichi Ito
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Patent number: 7319944Abstract: A computer implemented method for development profile simulation in accordance with an embodiment of the present invention includes calculating optical intensities in a photosensitive resist, calculating a spatial average value of the optical intensities, reading a measured changing ratio of a dissolution rate of the photosensitive resist relating to an alkaline concentration changed by at least one of exposure dose on the photosensitive resist, a position in the thickness direction of the photosensitive resist and an alkaline concentration of developer for the photosensitive resist, obtaining a calculated dissolution rate by using the spatial average value and the measured changing ratio, and predicting a pattern shape of the photosensitive resist from the calculated dissolution rate.Type: GrantFiled: January 21, 2004Date of Patent: January 15, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Hiroko Nakamura, Shoji Mimotogi, Yasunobu Onishi
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Patent number: 7300884Abstract: According to an aspect of the invention, there is provided a pattern forming method comprising forming an underlayer film on a film to be worked which has been formed on a semiconductor substrate, subjecting the underlayer film to an oxidizing treatment, forming an intermediate film which becomes a mask of the underlayer film, forming a resist film on the intermediate film, exposing the resist film to light to form a resist pattern, transferring the resist pattern onto the intermediate film to form an intermediate film pattern, and transferring the intermediate film pattern onto the underlayer film to form an underlayer film pattern.Type: GrantFiled: November 10, 2005Date of Patent: November 27, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Yuriko Seino, Yasuhiko Sato, Yasunobu Onishi
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Semiconductor device manufacturing method to form resist pattern, and substrate processing apparatus
Publication number: 20070128554Abstract: This invention discloses a method to form a resist pattern on a to-be-processed substrate by immersion exposure. A resist film is formed on the central portion of the upper surface of the to-be-processed substrate, on a bevel portion of the upper surface, which is obtained by chamfering the peripheral portion of the to-be-processed substrate, and on the end portion of the to-be-processed substrate. Pattern exposure for forming the latent image of a desired pattern on the resist film is executed while a liquid whose refractive index is higher than that of air exists between the resist film and a constituent element of a projection optical system of an exposure apparatus, which is nearest to the to-be-processed substrate. The resist film formed on the end portion of the to-be-processed substrate is removed by supplying a rinse solution to the end portion of the to-be-processed substrate after executing pattern exposure.Type: ApplicationFiled: November 16, 2006Publication date: June 7, 2007Inventors: Daisuke Kawamura, Eishi Shiobara, Tomoyuki Takeishi, Kei Hayasaki, Yasunobu Onishi, Shinichi Ito, Tatsuhiko Higashiki -
Patent number: 7198886Abstract: A method of forming a pattern, which comprises forming a masking material layer on a surface of a working film by coating the surface with a solution of a mixture comprising an inorganic compound having a bond between an inorganic element and oxygen atom, and a volatile unit, volatilizing the volatile unit to thereby make the masking material layer porous, forming a resist layer on a surface of the masking material layer, patterning the resist film to form a resist pattern, dry-etching the masking material layer to thereby transfer the resist pattern to the masking material layer, thereby forming a masking material pattern, and dry etching the working film to thereby transfer the masking material pattern to the working film to thereby form a working film pattern.Type: GrantFiled: May 27, 2005Date of Patent: April 3, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Yasuhiko Sato, Tsuyoshi Shibata, Junko Ohuchi, Yasunobu Onishi
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Publication number: 20070042297Abstract: According to an aspect of the invention, there is provided a resist pattern forming method of forming a resist pattern by immersion exposure, comprising forming a resist film on a substrate to be treated, a contact angle between the resist film and an immersion liquid being a first angle, forming a first cover film on the resist film, a contact angle between the first cover film and the immersion liquid being a second angle which is larger than the first angle, forming a second cover film on the first cover film, a contact angle between the second cover film and the immersion liquid being a third angle which is smaller than the second angle, and forming a latent image on the resist film by the immersion exposure.Type: ApplicationFiled: December 27, 2005Publication date: February 22, 2007Inventors: Eishi Shiobara, Daisuke Kawamura, Yasunobu Onishi, Shinichi Ito
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Publication number: 20060263726Abstract: A pattern forming method includes forming a photo resist film on a film to be processed, forming a protective film for protecting the photo resist film from an immersion liquid on the photo resist film by coating method, performing immersion exposure selectively to a region of part of the photo resist film via the immersion liquid, the immersion liquid being supplied onto the photo resist film, removing a residual substance including an affinitive part for the immersion liquid from the protective film after the forming the protective film and before the performing immersion exposure selectively to the region of part of the photo resist film, removing the protective film, and forming a pattern comprising the photo resist film by selectively removing an exposed region or a non-exposed region of the photo resist film.Type: ApplicationFiled: May 11, 2006Publication date: November 23, 2006Inventors: Shinichi Ito, Kentaro Matsunaga, Daisuke Kawamura, Yasunobu Onishi
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Publication number: 20060194449Abstract: A resist pattern forming method includes forming a chemically amplified resist film on a substrate, forming a latent image in the resist film by irradiating an energy ray, contacting a liquid to a surface of the resist film, increasing temperature of the resist film to first temperature after the forming the latent image and the contacting, the first temperature being lower than a reaction start temperature at which an acid catalysis reaction occurs in the resist film, maintaining the temperature of the resist film at the first temperature for a predetermined time, increasing the temperature of the resist film to second temperature being not lower than the reaction start temperature after a lapse of the predetermined time, decreasing the temperature of the resist film increased to the second temperature to a temperature lower than the reaction start temperature, and developing the resist film after the decreasing the temperature.Type: ApplicationFiled: February 9, 2006Publication date: August 31, 2006Inventors: Tomoyuki Takeishi, Shinichi Ito, Yasunobu Onishi, Tsuyoshi Shibata
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Publication number: 20060127815Abstract: According to an aspect of the invention, there is provided a pattern forming method comprising forming a first resist film on a film to be worked formed on a semiconductor substrate, forming a second resist film on the first resist film, forming a resist pattern from the second resist film, forming an overcoat film containing a metal element or a semi-conducting element on the resist pattern, insolubilizing, in a predetermined solvent, a portion of the overcoat film at a predetermined distance from an interface between the overcoat film and the resist pattern, removing, with the solvent, a portion of the overcoat film soluble in the solvent to form an overcoat film pattern, transferring the overcoat film pattern to the first resist film to form a lower-layer resist film pattern, and transferring the lower-layer resist film pattern to the film to be worked to form a pattern on the film.Type: ApplicationFiled: December 8, 2005Publication date: June 15, 2006Inventors: Yasuhiko Sato, Yasunobu Onishi
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Publication number: 20060115990Abstract: According to an aspect of the invention, there is provided a pattern forming method comprising forming an underlayer film on a film to be worked which has been formed on a semiconductor substrate, subjecting the underlayer film to an oxidizing treatment, forming an intermediate film which becomes a mask of the underlayer film, forming a resist film on the intermediate film, exposing the resist film to light to form a resist pattern, transferring the resist pattern onto the intermediate film to form an intermediate film pattern, and transferring the intermediate film pattern onto the underlayer film to form an underlayer film pattern.Type: ApplicationFiled: November 10, 2005Publication date: June 1, 2006Inventors: Yuriko Seino, Yasuhiko Sato, Yasunobu Onishi
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Patent number: 7026099Abstract: A pattern forming method is disclosed which comprises providing a to-be-processed film on a substrate, providing a resist film on the to-be-processed film, patterning the resist film, providing a film of a radiosensitive compound on the to-be-processed film such that the patterned resist film is covered with the film of the radiosensitive compound, subjecting the film of the radiosensitive compound to irradiation and a development process, thus exposing an upper surface of the resist film and patterning the film of the radiosensitive compound, and removing the resist film and processing the to-be-processed film, using the patterned film of the radiosensitive compound as a mask.Type: GrantFiled: April 22, 2003Date of Patent: April 11, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Hirokazu Kato, Yasunobu Onishi, Eishi Shiobara, Daisuke Kawamura, Hiroko Nakamura
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Publication number: 20060008746Abstract: The present application provides a method for manufacturing a semiconductor device, the method including forming a resist film on a substrate, forming a protective film on the resist film, exposing the resist film with a first liquid interposed between the protective film and a lens for exposure, removing the protective film using an oxidative second liquid after exposing the resist film, and developing the resist film to form a resist pattern after removing the protective film.Type: ApplicationFiled: July 6, 2005Publication date: January 12, 2006Inventors: Yasunobu Onishi, Kenji Chiba, Daisuke Kawamura, Shinichi Ito, Koutaro Sho, Tomoyuki Takeishi
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Publication number: 20050233255Abstract: A method of forming a pattern, which comprises forming a masking material layer on a surface of a working film by coating the surface with a solution of a mixture comprising an inorganic compound having a bond between an inorganic element and oxygen atom, and a volatile unit, volatilizing the volatile unit to thereby make the masking material layer porous, forming a resist layer on a surface of the masking material layer, patterning the resist film to form a resist pattern, dry-etching the masking material layer to thereby transfer the resist pattern to the masking material layer, thereby forming a masking material pattern, and dry etching the working film to thereby transfer the masking material pattern to the working film to thereby form a working film pattern.Type: ApplicationFiled: May 27, 2005Publication date: October 20, 2005Inventors: Yasuhiko Sato, Tsuyoshi Shibata, Junko Ohuchi, Yasunobu Onishi
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Publication number: 20050214695Abstract: A pattern forming method which can suppress pattern collapse of a resist pattern comprises after developing a resist pattern formed from a resist film on a substrate, supplying a rinse agent onto the substrate to replace a developer on the substrate with the rinse agent, supplying an coating film material onto the substrate to replace at least a part of the rinse agent with the coating film material, wherein the coating film material contains a solvent and a solute different from the resist film, volatilizing the solvent in the coating film material to form an coating film covering the resist film on the substrate, removing at least a part of a surface of the coating film to expose at least a part of an upper surface of the resist pattern and form a mask pattern comprising the coating film, and processing the substrate using the mask pattern.Type: ApplicationFiled: March 17, 2005Publication date: September 29, 2005Inventors: Hirokazu Kato, Yasunobu Onishi, Daisuke Kawamura
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Publication number: 20050153245Abstract: Disclosed is a method of forming a pattern comprising coating a solution containing a compound having a silicon-nitrogen linkage in the main chain thereof over a surface of a working film to form a mask, replacing the nitrogen in the mask by oxygen, forming a resist film on a surface of the mask, forming a resist pattern by subjecting the resist film to a patterning exposure and to a developing treatment, transcribing the resist pattern to the mask to form a masking pattern, and transcribing the masking pattern to the working film to form a working film pattern.Type: ApplicationFiled: September 15, 2004Publication date: July 14, 2005Applicant: Kabushiki Kaisha ToshibaInventors: Yasuhiko Sato, Yasunobu Onishi
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Publication number: 20040265745Abstract: A pattern forming method comprising forming a first layer on a semiconductor substrate, forming a resist layer on the first layer, patterning the resist layer to form a first patterning layer having several patterns, slimming or thickening a pattern width of the first patterning layer, forming a second patterning layer between patterns of the first patterning layer, and patterning the first patterning layer using the second patterning layer as a mask.Type: ApplicationFiled: May 6, 2004Publication date: December 30, 2004Inventors: Koutaro Sho, Tsuyoshi Shibata, Hirokazu Kato, Yasunobu Onishi, Daisuke Kawamura