Patents by Inventor Won Shik Choi
Won Shik Choi 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: 20240121956Abstract: A semiconductor device may include: first insulating pillars arranged in a first direction; second insulating pillars arranged alternately with the first insulating pillars and having a first width in the first direction and a second width in a second direction intersecting the first direction, the first width being greater than the second width; first memory cells located between the second insulating pillars and stacked along a first sidewall of each of the first insulating pillars; and second memory cells located between the second insulating pillars and stacked along a second sidewall of each of the first insulating pillars.Type: ApplicationFiled: March 31, 2023Publication date: April 11, 2024Inventors: Rho Gyu KWAK, In Su PARK, Jung Shik JANG, Seok Min CHOI, Won Geun CHOI
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Publication number: 20240081072Abstract: A memory device and a method of manufacturing the same. The memory device may include a stacked structure including a drain selection line, word lines, and a source selection line that are sequentially stacked, a main plug extending in a vertical direction of the stacked structure, and including a sub-source layer hole in a central portion of an upper area of the main plug, a separation pattern configured to separate the main plug in a vertical direction, and a source line stacked on the stacked structure, and configured to fill the sub-source layer hole.Type: ApplicationFiled: February 28, 2023Publication date: March 7, 2024Inventors: Won Geun CHOI, Jung Shik JANG
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Publication number: 20240081071Abstract: There are provided a memory device and a manufacturing method of the memory device. The memory device includes: a first stack structure including a word line of a first group and select lines of a first group; a second stack structure including select lines of a second group; a first plug in the first stack structure; a second plug connected to the first plug, the second plug being disposed in the second stack structure; a first isolation pattern between the select lines of the first group; and a second isolation pattern between the select lines of the second group.Type: ApplicationFiled: February 27, 2023Publication date: March 7, 2024Applicant: SK hynix Inc.Inventors: Jung Shik JANG, Mi Seong PARK, In Su PARK, Won Geun CHOI, Jung Dal CHOI
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Patent number: 11785348Abstract: Disclosed are an endoscopic reflection microscope using an optical fiber bundle and an image acquisition method using the same. The endoscopic reflection microscope includes an incident wave output unit configured to output an incident wave to a target object through any one optical fiber in an optical fiber bundle, a reflected wave receiver configured to receive a reflected wave output from the target object in response to the incident wave through a plurality of corresponding optical fibers in the optical fiber bundle, and an image acquirer configured to establish a reflection matrix corresponding to the reflected wave and to acquire an image in which at least one of phase retardation of the incident wave or phase retardation of the reflected wave is compensated for based on the established reflection matrix.Type: GrantFiled: September 24, 2021Date of Patent: October 10, 2023Assignees: Korea University Research and Business Foundation, Institute for Basic ScienceInventors: Won Shik Choi, Won Jun Choi, Mun Kyu Kang
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Publication number: 20220381695Abstract: A focus scan type imaging device for imaging a target object in a sample that induces aberration proposed. The device includes: a light source unit for emitting a beam; an optical interferometer for splitting the beam emitted from the light source into a sample wave and a reference wave, and providing an interference wave formed by interference between a reflection wave that is the sample wave reflected from the sample and the reference wave; a camera module for imaging the interference wave; a scanning mirror disposed on an optical path of the sample wave of the optical interferometer and configured to reflect the sample wave to cause the sample wave to scan the sample; a wavefront shaping modulator disposed on the optical path of the sample wave of the optical interferometer; and an imaging controller configured to operate in a phase map calculation mode and in an imaging mode.Type: ApplicationFiled: October 12, 2020Publication date: December 1, 2022Applicants: Korea University Research and Business Foundation, INSTITUTE FOR BASIC SCIENCEInventors: Won-Shik CHOI, Seok-Chan YOON, Ho-Jun LEE
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Publication number: 20220103733Abstract: Disclosed are an endoscopic reflection microscope using an optical fiber bundle and an image acquisition method using the same. The endoscopic reflection microscope includes an incident wave output unit configured to output an incident wave to a target object through any one optical fiber in an optical fiber bundle, a reflected wave receiver configured to receive a reflected wave output from the target object in response to the incident wave through a plurality of corresponding optical fibers in the optical fiber bundle, and an image acquirer configured to establish a reflection matrix corresponding to the reflected wave and to acquire an image in which at least one of phase retardation of the incident wave or phase retardation of the reflected wave is compensated for based on the established reflection matrix.Type: ApplicationFiled: September 24, 2021Publication date: March 31, 2022Applicants: Korea University Research and Business Foundation, Institute for Basic ScienceInventors: Won Shik CHOI, Won Jun CHOI, Mun Kyu KANG
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Patent number: 11085875Abstract: The present invention relates to a high-speed imaging system for measuring a target object within a sample, comprising: a light source emitting a plane wave; an angle-adjustment mirror adjusting an angle of the plane wave emitted from the light source; an optical interferometer dividing the plane wave whose angle was adjusted by the angle-adjustment mirror into a reference wave and a sample wave and forming an interference wave between the reference wave reflected from a reference mirror and the sample wave reflected from the target object; a camera module obtaining the interference wave, and an imaging controller controlling the angle-adjustment mirror to adjust the angle of the plane wave sequentially, forming a time-gated reflection matrix by using the interference waves obtained by the camera module in accordance with each angle of the plane wave, and imaging the target object based on the time-gated reflection matrix.Type: GrantFiled: October 3, 2019Date of Patent: August 10, 2021Assignees: Korea University Research and Business Foundation, Institute For Basic ScienceInventors: Won-Shik Choi, Moon-Seok Kim, Yong-Hyeon Jo, Seok-Chan Yoon
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Publication number: 20200110026Abstract: The present invention relates to a high-speed imaging system for measuring a target object within a sample, comprising: a light source emitting a plane wave; an angle-adjustment mirror adjusting an angle of the plane wave emitted from the light source; an optical interferometer dividing the plane wave whose angle was adjusted by the angle-adjustment mirror into a reference wave and a sample wave and forming an interference wave between the reference wave reflected from a reference mirror and the sample wave reflected from the target object; a camera module obtaining the interference wave, and an imaging controller controlling the angle-adjustment mirror to adjust the angle of the plane wave sequentially, forming a time-gated reflection matrix by using the interference waves obtained by the camera module in accordance with each angle of the plane wave, and imaging the target object based on the time-gated reflection matrix.Type: ApplicationFiled: October 3, 2019Publication date: April 9, 2020Applicants: Korea University Research and Business Foundation, Institute For Basic ScienceInventors: Won-Shik CHOI, Moon-Seok KIM, Yong-Hyeon JO, Seok-Chan YOON
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Patent number: 10352819Abstract: A image acquisition device comprises a light source unit, a digital micro mirror, an optical transfer medium, an imaging unit, and a beam splitter, wherein a single focusing pattern light is formed to be focused on a single specific point when the focusing pattern light penetrates the optical transfer medium, and specific points focused by each of the plurality of focusing pattern lights scan the object to be measured such that the object to be measured is imaged. Therefore, when an image is obtained through an optical transfer medium such as an optical fiber, pixelation and aberration can be avoided regardless of the type of optical transfer medium and an image having high resolution can be obtained fast without a separate scanner.Type: GrantFiled: February 26, 2014Date of Patent: July 16, 2019Assignee: Korea University Research and Business FoundationInventors: Won-Shik Choi, Dong-Gyu Kim
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Patent number: 10304170Abstract: The present invention relates to a method for imaging a target object within media which bring about simultaneously scattering and aberration capable of imaging of deep depth and high resolution not only by maximizing an accumulation of a single aberration but also by noticeably reducing an distortion of image using simultaneous correction of the scattering and the aberration.Type: GrantFiled: September 21, 2017Date of Patent: May 28, 2019Assignee: Korea University Research and Business FoundationInventors: Won-Shik Choi, Sung-Sam Kang
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Patent number: 10197790Abstract: A method of enhancing transmittance of waves according to the invention comprises the following steps: (a) generating a plurality of waves each of which has random phase; (b) grouping randomly the plurality of waves into a first group and a second group; (c) introducing the waves onto a disordered medium by fixing phase of waves constituting the first group and varying phase of waves constituting the second group; (d) measuring intensity of the waves based on overlapped waves of the first group and the second group which penetrated the disordered medium according to the phase variation of waves constituting the second group; (e) obtaining phase having the maximum intensity according to the phase variation among intensities measured at the step (d); and (f) adjusting phase of the waves constituting the second group based on phase obtained at the step (e).Type: GrantFiled: February 26, 2014Date of Patent: February 5, 2019Assignee: Korea University Research and Business FoundationInventors: Won-Shik Choi, Won-Jun Choi
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Patent number: 10139591Abstract: According to an embodiment of the present invention, there is provided an aspherical mirror for focusing a laser beam in a linear pattern, the aspherical mirror including: a convex surface diffusely reflecting an irradiated laser beam; and a concave surface reflecting the laser beam such that the laser beam is focused at one point, wherein the laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, and the laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes.Type: GrantFiled: June 26, 2017Date of Patent: November 27, 2018Assignee: Korea University Research and Business FoundationInventors: Won-shik Choi, Jung-ho Moon, Seung-Kuk Baek, Jung Joo Lee
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Publication number: 20180293716Abstract: The present invention relates to a method for imaging a target object within media which bring about simultaneously scattering and aberration capable of imaging of deep depth and high resolution not only by maximizing an accumulation of a single aberration but also by noticeably reducing an distortion of image using simultaneous correction of the scattering and the aberration.Type: ApplicationFiled: September 21, 2017Publication date: October 11, 2018Applicant: Korea University Research and Business FoundationInventors: Won-Shik CHOI, Sung-Sam KANG
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Publication number: 20180011288Abstract: According to an embodiment of the present invention, there is provided an aspherical mirror for focusing a laser beam in a linear pattern, the aspherical mirror including: a convex surface diffusely reflecting an irradiated laser beam; and a concave surface reflecting the laser beam such that the laser beam is focused at one point, wherein the laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, and the laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes.Type: ApplicationFiled: June 26, 2017Publication date: January 11, 2018Applicant: Korea University Research and Business FoundationInventors: Won-shik CHOI, Jung-ho MOON, Seung-Kuk BAEK, Jung Joo LEE
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Publication number: 20160349500Abstract: A method of enhancing transmittance of waves according to the invention comprises the following steps: (a) Generating a plurality of waves each of which has random phase; (b) grouping randomly the plurality of waves into a first group and a second group; (c) introducing the waves onto a disordered medium by fixing phase of waves constituting the first group and varying phase of waves constituting the second group; (d) measuring intensity of the waves based on overlapped waves of the first group and the second group which penetrated the disordered medium according to the phase variation of waves constituting the second group; (e) obtaining phase having the maximum intensity according to the phase variation among intensities measured at the step (d); and (f) adjusting phase of the waves constituting the second group based on phase obtained at the step (e).Type: ApplicationFiled: February 26, 2014Publication date: December 1, 2016Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: Won-Shik CHOI, Won-Jun CHOI
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Publication number: 20160299033Abstract: A image acquisition device comprises a light source unit, a digital micro mirror, an optical transfer medium, an imaging unit, and a beam splitter, wherein a single focusing pattern light is formed to be focused on a single specific point when the focusing pattern light penetrates the optical transfer medium, and specific points focused by each of the plurality of focusing pattern lights scan the object to be measured such that the object to be measured is imaged. Therefore, when an image is obtained through an optical transfer medium such as an optical fiber, pixelation and abberration can be avoided regardless of the type of optical transfer medium and an image having high resolution can be obtained fast without a separate scanner.Type: ApplicationFiled: February 26, 2014Publication date: October 13, 2016Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: Won-Shik CHOI, Dong-Gyu KIM
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Patent number: 7491415Abstract: A fungicidal composition for agricultural use, containing Chloranthus henryi extract or a sesquiterpene compound separated from Chloranthus henryi extract as an active ingredient, the composition having a antifungal activity against phytopathogenic fungi.Type: GrantFiled: November 13, 2006Date of Patent: February 17, 2009Assignee: Korea Research Institute of Bioscience and BiotechnologyInventors: Sung Uk Kim, Yun Mi Lee, Ki Duk Park, Tae Hoon Kang, Sung Eun Kim, Mun-Chual Rho, Jae Sun Moon, Won Shik Choi