Patents by Inventor Jun-Bo Yoon
Jun-Bo Yoon 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: 20240339548Abstract: The present disclosure relates to an anti-reflective nanostructure and a method of manufacturing the same, and more particularly, to an anti-reflective nanostructure having a refractive index close to a quintic refractive index profile and exhibiting an anti-reflection effect in which a reflectance is close to almost 0. The anti-reflective nanostructure according to an embodiment of the present invention includes: a base part having a top surface; and a plurality of nanostructures arranged in a first direction on the top surface and each having a shape in which an upper portion has a thin and sharp shape, a lower portion has a width greater than that of the upper portion, and the width gradually increases in a direction from the upper portion to the lower portion.Type: ApplicationFiled: April 5, 2024Publication date: October 10, 2024Applicant: Korea Advanced Institute of Science And TechnologyInventors: Jun-Bo YOON, Beom-Jun KIM, Min-Seung JO, Mikiko ITO, Byungkee LEE
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Publication number: 20230253061Abstract: The present invention relates to a mechanical interconnect memory, and more particularly, to a mechanical interconnect memory applicable to smart interconnect technology that reduces the power consumption of an interconnect layer. A mechanical interconnect memory according to an embodiment of the present invention comprises: an upper electrode including: a spring part having at least one upward protruding portion between both ends of the spring part; and a moving part having one end of the moving part fixed to the at least one upward protruding portion of the spring part and the other end of the moving part being a free end of the moving part that is capable of moving up and down; and a lower electrode at least partially disposed under the moving part.Type: ApplicationFiled: September 23, 2022Publication date: August 10, 2023Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jun-Bo YOON, Yong-bok Lee, Pan-kyu Choi, Su-hyun Kim, Tae-Soo Kim
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Patent number: 11721495Abstract: A switching device in accordance with the present invention includes a first electrode and a second electrode, and the second electrode includes a body part and a cantilever connected to the body part. In addition, one end of a the cantilever comes into contact with the first electrode by an electrostatic force generated by a voltage applied to the first electrode and the second electrode, and the one end of the cantilever is separated from the first electrode due to heat generated by a voltage applied to both ends of the body part. In addition, the second electrode may include a 2-1 electrode, a 2-2 electrode, and an engineered beam connected in between.Type: GrantFiled: July 29, 2020Date of Patent: August 8, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-Bo Yoon, Pan Kyu Choi, Yong Bok Lee, Subon Kim, Suhyun Kim
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Publication number: 20230106878Abstract: The present invention relates to a suspended nanowire structure. The present invention, more particularly, relates to a suspended nanowire structure capable of high-speed operation by improving the reaction rate by making the temperature distribution of the nanowire uniform. A suspended nanowire structure in accordance with an embodiment of the present invention comprises: a substrate; a plurality of nanowires float on the substrate and extending along a first direction; electrodes respectively connected to both ends of the plurality of nanowires; and a heating electrode which is disposed on both ends of the plurality of nanowires, extends in a second direction perpendicular to the first direction, and provides heat to both ends of the plurality of nanowires during driving.Type: ApplicationFiled: February 23, 2022Publication date: April 6, 2023Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jun-Bo Yoon, Min-Seung Jo, Jae Shin Lee
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Publication number: 20230055954Abstract: Disclosed are a method using a sequential contact analysis of a nano-asperity in order to predict an adhesion force between two contacting surfaces and a recording medium recording a program. According to an exemplary embodiment, the method may include: receiving surface roughness data of each of the two target objects; modeling a rough surface based on the surface roughness data; computing an adhesion force value when the two target objects contact and a deformation value of the first nano-asperity; determining whether a next contact is established; iteratively performing the computing and the determining when the deformation value of the first nano-asperity is larger than the separation distance of the next nano-asperity; and determining that a next contact is not established and computing and outputting force adhesion force in a final contact situation, when the deformation value of the first nano-asperity is smaller than the separation distance of the next nano-asperity.Type: ApplicationFiled: November 30, 2021Publication date: February 23, 2023Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jun-Bo YOON, Su-hyun KIM, Yong-bok LEE, Pan-kyu CHOI, Tae-Soo KIM
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Patent number: 11456137Abstract: Provided is an electrostatic drive switch, which includes a source plate to which a voltage for driving the electrostatic drive switch is applied and a drain electrode spaced apart from the source plate. The source plate includes a source electrode and an elastic part connected to the source electrode, and a first material and a second material having lower hardness than the first material are provided on the source electrode. When the source electrode and the drain electrode are electrically connected to each other by the voltage, the second material is brought into contact with the drain electrode by the elastic part after the first material is brought into contact with the drain electrode by the elastic part.Type: GrantFiled: July 21, 2020Date of Patent: September 27, 2022Inventors: Jun-Bo Yoon, Su-Bon Kim, Yong-Bok Lee
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Publication number: 20220020540Abstract: A switching device in accordance with the present invention includes a first electrode and a second electrode, and the second electrode includes a body part and a cantilever connected to the body part. In addition, one end of a the cantilever comes into contact with the first electrode by an electrostatic force generated by a voltage applied to the first electrode and the second electrode, and the one end of the cantilever is separated from the first electrode due to heat generated by a voltage applied to both ends of the body part. In addition, the second electrode may include a 2-1 electrode, a 2-2 electrode, and an engineered beam connected in between.Type: ApplicationFiled: July 29, 2020Publication date: January 20, 2022Applicants: Korea Advanced Institute of Science And Technology, Samsung Electronics Co., Ltd.Inventors: Jun-Bo YOON, Pan Kyu CHOI, Yong Bok LEE, Subon KIM, Suhyun KIM
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Publication number: 20210202199Abstract: Provided is an electrostatic drive switch, which includes a source plate to which a voltage for driving the electrostatic drive switch is applied and a drain electrode spaced apart from the source plate. The source plate includes a source electrode and an elastic part connected to the source electrode, and a first material and a second material having lower hardness than the first material are provided on the source electrode. When the source electrode and the drain electrode are electrically connected to each other by the voltage, the second material is brought into contact with the drain electrode by the elastic part after the first material is brought into contact with the drain electrode by the elastic part.Type: ApplicationFiled: July 21, 2020Publication date: July 1, 2021Applicant: Korea Advanced Institute of Science And TechnologyInventors: Jun-Bo YOON, Su-Bon KIM, Yong-Bok LEE
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Publication number: 20210017020Abstract: Provided is a suspended type nanowire that is fixed and electrically connected to each of a first electrode disposed on a substrate and a second electrode disposed on the substrate and spaced apart from the first electrode and suspended on the substrate. Here, a cross-section in a direction perpendicular to a longitudinal direction of the suspended type nanowire includes at least one curved part, and the curve part includes a reference surface and at least one side surface extending downward from the reference surface.Type: ApplicationFiled: July 15, 2020Publication date: January 21, 2021Applicant: Korea Advanced Institute of Science And TechnologyInventors: Jun-Bo YOON, Jaeshin LEE, Kwang-Wook CHOI, Min-Seung JO
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Patent number: 10884557Abstract: A touch input device which detects a touch position and a touch pressure magnitude may be provided that includes: a display module; a first electrode and a second electrode which are disposed on the display module and are spaced apart from each other; a spacer layer which is formed on the display module and covers the first electrode and the second electrode; and a transparent ground electrode which is disposed on the spacer layer and is formed of a material having transparency. A distance between the transparent ground electrode and the display module is changed by inputting a touch on the transparent ground electrode, and a capacitance between the first electrode and the second electrode is changed by the distance change. The position of the touch and the pressure magnitude of the touch are detected based on the changed capacitance.Type: GrantFiled: August 21, 2018Date of Patent: January 5, 2021Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jun-Bo Yoon, Jaeyoung Yoo, Min-Ho Seo
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Patent number: 10876906Abstract: A pressure sensor includes a substrate whose top surface is formed in the form of a projection, a first electrode formed on one side of the top surface of the substrate, a second electrode formed on the other side of the top surface and spaced apart from the first electrode; and a dielectric material layer formed on the top surface of the substrate and fills a space between the first electrode and the second electrode. A pressure applied in a direction perpendicular to the top surface of the substrate causes a change in the dielectric constant of the dielectric material layer. The magnitude of the pressure is sensed by detecting a capacitance which changes according to the change in the dielectric constant. The projection forms a stress concentration structure, through which the dielectric constant change amount according to the pressure becomes larger, thereby improving sensitivity of the pressure sensor.Type: GrantFiled: February 7, 2018Date of Patent: December 29, 2020Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jun-Bo Yoon, Jae-young Yoo, Min-Ho Seo
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Patent number: 10803814Abstract: A display apparatus may be provided that includes: a transparent display panel; a blind panel which is disposed adjacent to the transparent display panel and includes a plurality of cells that are individually drivable; and a controller which changes an operation mode through an on/off of the transparent display panel and a selective drive of a cell included in the blind panel. As a result, the display apparatus according to the embodiment of the present invention is a transparent display apparatus using the OLED. The display apparatus is able to operate without the external environmental constraints and to operate in various modes including the display function.Type: GrantFiled: July 26, 2017Date of Patent: October 13, 2020Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jun-Bo Yoon, Keun Seo Lim
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Patent number: 10514392Abstract: Provided are improved manufacturing methods of semiconductor devices, probe cards, test apparatuses including the probe card, and methods for manufacturing probe cards. The probe card includes a circuit board, a support located under the circuit board, and a plurality of probe needles located on a bottom surface of the support. Each of the probe needles has a tip configured to contact a side surface of a bump included in a test target. The support may include a stress absorption layer located on a bottom surface to which the probe needles are connected. Manufacturing of semiconductor devices may comprise forming elongated conductive bumps on a body of a semiconductor device, testing the semiconductor device by contacting tips of the probe needles to sides surfaces of the bumps and packaging of the semiconductor device.Type: GrantFiled: January 15, 2018Date of Patent: December 24, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Min-woo Rhee, Duke Kimm, Jae-hong Kim, Ji-nyeong Yun, In-kyu Park, Jun-bo Yoon, Dong-uk Kwon, Seung-hwan Kim, Chang-keun Kim, Yong-hoon Yoon
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Patent number: 10459148Abstract: A display device including a light source and a light guide plate may be provided. The light guide plate includes: a light guiding part which guides light incident on a side thereof from the light source by total internal reflection; a fine pattern portion which emits the guided light only to an upper portion of the light guiding part; a guard ring portion which protects the fine pattern portion from the intrusion of impurities; and a light emitting member which is disposed on a top surface of the fine pattern portion and a top surface of the guard ring portion. The light guide plate is formed of a transparent material.Type: GrantFiled: August 28, 2018Date of Patent: October 29, 2019Assignee: MEMSLUXInventors: Jun-Bo Yoon, Keun-Seo Lim, Shin-Ae Hwang
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Publication number: 20190064965Abstract: A touch input device which detects a touch position and a touch pressure magnitude may be provided that includes: a display module; a first electrode and a second electrode which are disposed on the display module and are spaced apart from each other; a spacer layer which is formed on the display module and covers the first electrode and the second electrode; and a transparent ground electrode which is disposed on the spacer layer and is formed of a material having transparency. A distance between the transparent ground electrode and the display module is changed by inputting a touch on the transparent ground electrode, and a capacitance between the first electrode and the second electrode is changed by the distance change. The position of the touch and the pressure magnitude of the touch are detected based on the changed capacitance.Type: ApplicationFiled: August 21, 2018Publication date: February 28, 2019Applicant: Korea Advanced Institute of Science And TechnologyInventors: Jun-Bo YOON, Jaeyoung YOO, Min-Ho SEO
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Publication number: 20190064219Abstract: Provided are improved manufacturing methods of semiconductor devices, probe cards, test apparatuses including the probe card, and methods for manufacturing probe cards. The probe card includes a circuit board, a support located under the circuit board, and a plurality of probe needles located on a bottom surface of the support. Each of the probe needles has a tip configured to contact a side surface of a bump included in a test target. The support may include a stress absorption layer located on a bottom surface to which the probe needles are connected. Manufacturing of semiconductor devices may comprise forming elongated conductive bumps on a body of a semiconductor device, testing the semiconductor device by contacting tips of the probe needles to sides surfaces of the bumps and packaging of the semiconductor device.Type: ApplicationFiled: January 15, 2018Publication date: February 28, 2019Inventors: Min-woo Rhee, Duke Kimm, Jae-hong Kim, Ji-nyeong Yun, In-kyu Park, Jun-bo Yoon, Dong-uk Kwon, Seung-hwan Kim, Chang-keun Kim, Yong-hoon Yoon
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Publication number: 20180301096Abstract: A display apparatus may be provided that includes: a transparent display panel; a blind panel which is disposed adjacent to the transparent display panel and includes a plurality of cells that are individually drivable; and a controller which changes an operation mode through an on/off of the transparent display panel and a selective drive of a cell included in the blind panel. As a result, the display apparatus according to the embodiment of the present invention is a transparent display apparatus using the OLED. The display apparatus is able to operate without the external environmental constraints and to operate in various modes including the display function.Type: ApplicationFiled: July 26, 2017Publication date: October 18, 2018Applicant: Korea Advanced Institute of Science And TechnologyInventors: Jun-Bo YOON, Keun Seo Lim
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Publication number: 20180266898Abstract: A pressure sensor including laterally arranged electrodes on a coplanar surface and a method of fabricating the pressure sensor are provided. The pressure sensor includes: a substrate whose top surface is formed in the form of a projection; a first electrode which is formed on one side of the top surface of the substrate; a second electrode which is formed on the other side of the top surface of the substrate and is spaced apart from the first electrode; and a dielectric material layer which is formed on the top surface of the substrate and fills a space between the first electrode and the second electrode. A pressure applied in a direction perpendicular to the top surface of the substrate causes a change in the dielectric constant of the dielectric material layer. The magnitude of the pressure is sensed by detecting a capacitance which changes according to the change in the dielectric constant.Type: ApplicationFiled: February 7, 2018Publication date: September 20, 2018Applicant: Korea Advanced Institute of Science And TechnologyInventors: Jun-Bo YOON, Jae-young Yoo, Min-Ho Seo
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Patent number: 10048431Abstract: Provided are a light guide member, a lighting apparatus including the light guide member, and a method of fabricating the light guide member. The light guide member comprises: a body, which is formed as a transparent plate, including a first surface and a second surface facing the first surface; and a plurality of dimple type optical controllers formed beneath at least one of the first surface and the second surface and having reflective surfaces that reflect light proceeding between the first and second surfaces of the body toward at least one of the first and second surfaces.Type: GrantFiled: June 6, 2016Date of Patent: August 14, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hong-seok Lee, Hoon Song, Jun-bo Yoon, Joo-hyung Lee
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Patent number: 9989689Abstract: A backlight unit may be provided which is capable of local dimming. The backlight unit includes: one or a plurality of light emitting devices; and a light guide plate including a top surface and a bottom surface, one or a plurality of grooves which are formed in the bottom surface and in which the light emitting device is disposed, a reflective layer which is disposed within the one or the plurality of grooves and reflects light emitted from the light emitting device, and a plurality of inverse prism patterns disposed in the top surface.Type: GrantFiled: February 16, 2016Date of Patent: June 5, 2018Assignee: Korea Advanced Institute of Science and TechnologyInventors: Jun-Bo Yoon, Seok-Won Bae, Gun-Wook Yoon