Patents by Inventor Chikaaki Kodama
Chikaaki Kodama 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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Publication number: 20240258234Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: April 12, 2024Publication date: August 1, 2024Applicant: KIOXIA CORPORATIONInventors: Kosuke YANAGIDAIRA, Chikaaki KODAMA
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Patent number: 11990406Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: July 8, 2022Date of Patent: May 21, 2024Assignee: KIOXIA CORPORATIONInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Publication number: 20220344256Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: July 8, 2022Publication date: October 27, 2022Applicant: KIOXIA CORPORATIONInventors: Kosuke YANAGIDAIRA, Chikaaki KODAMA
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Patent number: 11417600Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: October 26, 2020Date of Patent: August 16, 2022Assignee: KIOXIA CORPORATIONInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Publication number: 20210043558Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: October 26, 2020Publication date: February 11, 2021Applicant: Toshiba Memory CorporationInventors: Kosuke YANAGIDAIRA, Chikaaki KODAMA
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Patent number: 10854546Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: October 14, 2019Date of Patent: December 1, 2020Assignee: Toshiba Memory CorporationInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Publication number: 20200043845Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: October 14, 2019Publication date: February 6, 2020Applicant: Toshiba Memory CorporationInventors: Kosuke YANAGIDAIRA, Chikaaki Kodama
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Patent number: 10490499Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: November 16, 2018Date of Patent: November 26, 2019Assignee: Toshiba Memory CorporationInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Publication number: 20190088590Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: November 16, 2018Publication date: March 21, 2019Applicant: Toshiba Memory CorporationInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Patent number: 10198546Abstract: In an assist pattern arrangement method according to an embodiment, a plurality of patterns, in which an assist pattern is to be arranged, are extracted from a design pattern that is prepared in advance. Then, a resolution map of the extracted pattern is calculated. The resolution map includes a first pattern that increases a resolution of the pattern and a second pattern that decreases the resolution of the pattern. After the resolution map is calculated, a plurality of calculated resolution maps are added. Then, the assist pattern is arranged on the design pattern on the basis of the addition result.Type: GrantFiled: March 2, 2017Date of Patent: February 5, 2019Assignee: TOSHIBA MEMORY CORPORATIONInventor: Chikaaki Kodama
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Patent number: 10163790Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: September 28, 2017Date of Patent: December 25, 2018Assignee: Toshiba Memory CorporationInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Patent number: 9977855Abstract: According to one embodiment, a design method of layout formed by a sidewall method is provided. The method includes: preparing a base pattern on which a plurality of first patterns extending in a first direction and arranged at a first space in a second direction intersecting the first direction and a plurality of second patterns extending in the first direction and arranged at a center between the first patterns, respectively, are provided; and drawing a connecting portion which extends in the second direction and connects two neighboring first patterns sandwiching one of the second patterns, and separating the one of the second patterns into two patterns not contacting the connecting portion.Type: GrantFiled: January 15, 2014Date of Patent: May 22, 2018Assignee: TOSHIBA MEMORY CORPORATIONInventors: Chikaaki Kodama, Koichi Nakayama, Toshiya Kotani, Shigeki Nojima, Fumiharu Nakajima, Hirotaka Ichikawa
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Patent number: 9953126Abstract: According to one embodiment, a design method of layout formed by a sidewall method is provided. The method includes: preparing a base pattern on which a plurality of first patterns extending in a first direction and arranged at a first space in a second direction intersecting the first direction and a plurality of second patterns extending in the first direction and arranged at a center between the first patterns, respectively, are provided; and drawing a connecting portion which extends in the second direction and connects two neighboring first patterns sandwiching one of the second patterns, and separating the one of the second patterns into two patterns not contacting the connecting portion.Type: GrantFiled: October 3, 2014Date of Patent: April 24, 2018Assignee: TOSHIBA MEMORY CORPORATIONInventors: Chikaaki Kodama, Koichi Nakayama, Toshiya Kotani, Shigeki Nojima, Fumiharu Nakajima, Hirotaka Ichikawa
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Publication number: 20180082943Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: September 28, 2017Publication date: March 22, 2018Applicant: Toshiba Memory CorporationInventors: Kosuke YANAGIDAIRA, Chikaaki KODAMA
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Patent number: 9917049Abstract: According to one embodiment, a semiconductor device includes interconnects extending from a element formation area to the drawing area, and connected with semiconductor elements in the element formation area and connected with contacts in the drawing area. The interconnects are formed based on a pattern of a (n+1)th second sidewall film matching a pattern of a nth (where n is an integer of 1 or more) first sidewall film on a lateral surface of a sacrificial layer. A first dimension matching an interconnect width of the interconnects and an interconnects interval in the element formation area is (k1/2n)×(?/NA) or less when an exposure wavelength of an exposure device is ?, a numerical aperture of a lens of the exposure device is NA and a process parameter is k1. A second dimension matching an interconnect interval in the drawing area is greater than the first dimension.Type: GrantFiled: August 2, 2016Date of Patent: March 13, 2018Assignee: Toshiba Memory CorporationInventors: Fumiharu Nakajima, Toshiya Kotani, Hiromitsu Mashita, Takafumi Taguchi, Ryota Aburada, Chikaaki Kodama
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Patent number: 9806021Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: January 18, 2017Date of Patent: October 31, 2017Assignee: TOSHIBA MEMORY CORPORATIONInventors: Kosuke Yanagidaira, Chikaaki Kodama
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Publication number: 20170262565Abstract: In an assist pattern arrangement method according to an embodiment, a plurality of patterns, in which an assist pattern is to be arranged, are extracted from a design pattern that is prepared in advance. Then, a resolution map of the extracted pattern is calculated. The resolution map includes a first pattern that increases a resolution of the pattern and a second pattern that decreases the resolution of the pattern. After the resolution map is calculated, a plurality of calculated resolution maps are added. Then, the assist pattern is arranged on the design pattern on the basis of the addition result.Type: ApplicationFiled: March 2, 2017Publication date: September 14, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventor: CHIKAAKI KODAMA
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Patent number: 9698157Abstract: A microstructure body according to an embodiment includes a stacked body. The stacked body includes a plurality of unit structure bodies stacked periodically along a first direction. A configuration of an end portion of the stacked body in a second direction is a stairstep configuration including terraces formed every unit structure body. The second direction intersects the first direction. A first distance in a third direction between end edges of two of the unit structure bodies facing the third direction is shorter than a second distance in the second direction between end edges of the two of the unit structure bodies facing the second direction. The third direction intersects both the first direction and the second direction.Type: GrantFiled: August 25, 2015Date of Patent: July 4, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Yuko Kono, Takaki Hashimoto, Yuji Setta, Toshiya Kotani, Chikaaki Kodama
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Publication number: 20170125339Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: ApplicationFiled: January 18, 2017Publication date: May 4, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kosuke YANAGIDAIRA, Chikaaki Kodama
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Patent number: 9583437Abstract: A method for manufacturing a semiconductor device of one embodiment of the present invention includes: forming an insulation layer to be processed over a substrate; forming a first sacrificial layer in a first area over the substrate, the first sacrificial layer being patterned to form in the first area a functioning wiring connected to an element; forming a second sacrificial layer in a second area over the substrate, the second sacrificial layer being patterned to form in the second area a dummy wiring; forming a third sacrificial layer at a side wall of the first sacrificial layer and forming a fourth sacrificial layer at a side wall of the second sacrificial layer, the third sacrificial layer and the fourth sacrificial layer being separated; forming a concavity by etching the insulation layer to be processed using the third sacrificial layer and the fourth sacrificial layer as a mask; and filling a conductive material in the concavity.Type: GrantFiled: August 18, 2015Date of Patent: February 28, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kosuke Yanagidaira, Chikaaki Kodama