Patents by Inventor Jeong-Hwan Choi
Jeong-Hwan 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: 20240154042Abstract: A semiconductor device includes a substrate including an upper surface and a lower surface that are opposite to each other in a first direction, an active pattern which is on the upper surface of the substrate and extends in a second direction, a gate electrode which is on the active pattern and extends in a third direction, a first source/drain pattern which is connected to the active pattern on the upper surface of the substrate, and includes a lower epitaxial region and an upper epitaxial region, the upper epitaxial region including an epitaxial recess, and the lower epitaxial region being inside the epitaxial recess, a first source/drain contact, which is connected to the first source/drain pattern and extends into the substrate, and a contact silicide layer, which is between the first source/drain contact and the first source/drain pattern and contacts the lower epitaxial region.Type: ApplicationFiled: July 17, 2023Publication date: May 9, 2024Inventors: Jun Ki PARK, Wan Don KIM, Jeong Hyuk YIM, Hyo Seok CHOI, Sung Hwan KIM
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Patent number: 11963439Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.Type: GrantFiled: August 24, 2022Date of Patent: April 16, 2024Assignee: Rohm and Haas Electronic Materials Korea Ltd.Inventors: Eun-Joung Choi, Young-Kwang Kim, Su-Hyun Lee, So-Young Jung, YeJin Jeon, Hong-Se Oh, Dong-Hyung Lee, Jin-Man Kim, Hyun-Woo Kang, Mi-Ja Lee, Hee-Ryong Kang, Hyo-Nim Shin, Jeong-Hwan Jeon, Sang-Hee Cho
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Publication number: 20240118028Abstract: An infrared heat source module is configured to minimize problems such as wrinkles or cracks in electrodes even if the patterns of a coated part and an uncoated part of the electrodes present in a current collector vary. The module improves a drying efficiency of the coated part of the current collector. An electrode using the infrared heat source module is manufactured by a process.Type: ApplicationFiled: January 27, 2022Publication date: April 11, 2024Applicant: LG Energy Solution, Ltd.Inventors: Soon Sik Choi, Young Kuk Ko, Oh Cheol Kwon, Ji Hwan Kim, Jeong Won Lee
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Patent number: 11953958Abstract: A display includes: a display panel; and a panel bottom sheet disposed below the display panel, the panel bottom sheet including: a first heat dissipation layer; a second heat dissipation layer over the first heat dissipation layer, including a first opening formed completely through the second heat dissipation layer in a thickness direction; a heat dissipation coupling interlayer between the first heat dissipation layer and the second heat dissipation layer, and a heat dissipation substrate on the second heat dissipation layer.Type: GrantFiled: December 12, 2022Date of Patent: April 9, 2024Assignee: Samsung Display Co., Ltd.Inventors: Kang Woo Lee, Boo Kan Ki, June Hyoung Park, Sun Hee Oh, Dong Hyeon Lee, Jeong In Lee, Hyuk Hwan Kim, Seong Sik Choi
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Patent number: 11939173Abstract: A transportation head for a microchip transfer device capable of minimizing mechanical and chemical damage to a microchip, a microchip transfer device having same, and a transfer method thereby, and the transportation head includes a head body having a pickup area and a dummy area; a first protruding pin disposed in the pickup area of the head body; and a liquid droplet attached to the first protruding pin.Type: GrantFiled: August 23, 2019Date of Patent: March 26, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Dahl-Young Khang, Sung-Hwan Hwang, Jia Lee, Sung-Soo Yoon, Su Seok Choi, Kiseok Chang, Jeong Min Moon, Soon Shin Jung, Sungpil Ryu, Jihwan Jung
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Publication number: 20240087225Abstract: The interaction system includes: an infrastructure image sensor-based 3D cloud restoration module configured to create a 3D cloud point using a multi-view image received from an infrastructure sensor; a real-time 3D map creation and learning update module configured to generate subset data composed of point clouds into a 3D map using 3D point information received from the infrastructure image sensor-based 3D cloud restoration module; an object estimation module in a 3D space configured to recognize and track an object existing in a 3D space based on the 3D map received from the real-time 3D map creation and learning update module; and a dangerous situation recognition and interaction module in space configured to receive information on an object existing in the 3D space from the object estimation module in the 3D space, recognize a dangerous situation, and provide dangerous situation related information.Type: ApplicationFiled: September 13, 2023Publication date: March 14, 2024Inventors: JinWoo KIM, Ki Tae KIM, MyungWook PARK, Kyoung Hwan AN, Jeong Dan CHOI
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Publication number: 20230329566Abstract: An apparatus for estimating blood pressure includes: a photoplethysmogram (PPG) sensor configured to measure a PPG signal from an object; a force sensor configured to measure a force signal acting between the object and the PPG sensor; and a processor configured to (i) divide a predetermined blood pressure range into a plurality of classes, (ii) input the measured PPG signal and the measured force signal into a blood pressure estimation model to obtain the probability values for each of the classes, and (iii) estimate blood pressure based on the obtained probability values for the respective classes.Type: ApplicationFiled: October 18, 2022Publication date: October 19, 2023Applicants: SAMSUNG ELECTRONICS CO., LTD., IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Sang Kon BAE, Joon-Hyuk CHANG, Youn Ho KIM, Jin Woo CHOI, Jehyun KYUNG, Joon-Young YANG, Ye-Rin JEOUNG, Jeong-Hwan CHOI
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Publication number: 20220287571Abstract: An apparatus for estimating bio-information is disclosed. The apparatus may include: a pulse wave sensor configured to measure a pulse wave signal from an object; a force sensor configured to obtain a force signal by measuring an external force exerted onto the force sensor; and a processor configured to obtain a first input value, a second input value, and a third input value based on the pulse wave signal and the force signal, to extract a feature vector by inputting the first input value, the second input value, and the third input value into a first neural network model, and to obtain the bio-information by inputting the feature vector into a second neural network model.Type: ApplicationFiled: July 7, 2021Publication date: September 15, 2022Applicants: SAMSUNG ELECTRONICS CO., LTD., IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Sang Kon BAE, Joon-Hyuk CHANG, Jin Woo CHOI, Youn Ho KIM, Jehyun KYUNG, Joon-Young YANG, Inmo YEON, Jeong-Hwan CHOI
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Publication number: 20180246014Abstract: Provided are an automatic precipitation sampler system and an operation method thereof. The automatic precipitation sampler system, includes a main body having an water receiving port provided in the upper portion thereof, a driving unit disposed in the main body, a circular table disposed in the main body and rotating by the driving unit, a plurality of sample containers arranged at uniform intervals from each other at positions spaced away from the center of the circular table by a predetermined distance in the radial direction of the circular table, and a plurality of funnels arranged on top of each of the plurality of sample containers such that any one of the plurality of funnels is aligned with the water receiving port.Type: ApplicationFiled: February 23, 2018Publication date: August 30, 2018Inventors: Jung-Ho LEE, Ha-Young YANG, Ki-Ho CHANG, Jeong Hwan CHOI, Jin-Yim JEONG, Baek-Jo KIM, Yong-Tea SUNWOO, Hyun-Chul SHIN, Cheol-Ho HAN
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Patent number: 10027498Abstract: Disclosed herein are a method and apparatus for delivering user-assisted multimedia data using periodic multicast, which provide stable high-capacity Video-On-Demand (VOD) streaming service by proposing a user-assisted video transfer scheme capable of replacing a client-server configuration in providing high-capacity VOD streaming service.Type: GrantFiled: November 3, 2014Date of Patent: July 17, 2018Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Ik Jun Yeom, Young Hoon Kim, Yu Sung Kim, Jeong Hwan Choi
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Publication number: 20180106887Abstract: Disclosed is an apparatus for calibrating and validating an MRR, the apparatus including a correlation calculation unit configured to determine a correlation between a precipitation strength value and a precipitation measurement value, a regression equation calculation unit configured to calculate a regression equation for the precipitation strength value and to calculate a result value of the regression equation, an optimum accumulation time determination unit configured to determine an optimum accumulation time based on the correlation and the result value, a rain cloud vertical sampling unit configured to sample a rain cloud example, a vertical reflectance comparison unit configured to compare a calibrated MRR at a shortest range distance with a vertical reflectance according to a wind system, and a radar constant correction unit configured to correct a constant of an MRR based on the optimum value or the sampling and a result value of the comparison.Type: ApplicationFiled: November 22, 2016Publication date: April 19, 2018Applicant: Korea Meteorological AdministrationInventors: Jeong Hwan Choi, Ki-Ho Chang, Jin-Yim Jeong, Ha Young YANG, Miyoung Kang, Baek-Jo Kim
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Publication number: 20150124581Abstract: Disclosed herein are a method and apparatus for delivering user-assisted multimedia data using periodic multicast, which provide stable high-capacity Video-On-Demand (VOD) streaming service by proposing a user-assisted video transfer scheme capable of replacing a client-server configuration in providing high-capacity VOD streaming service.Type: ApplicationFiled: November 3, 2014Publication date: May 7, 2015Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Ik Jun YEOM, Young Hoon KIM, Yu Sung KIM, Jeong Hwan CHOI
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Publication number: 20030188196Abstract: An email security system for company security is disclosed. The email security system has a transmission server and a reception server. The transmission server has a mail code assigning and mail separating unit, a database, a security violation checking unit, a virus checking and curing unit, and a mail sending unit; and the reception server has a CGI operating unit. The security violation checking unit checks whether or not the email written and sent by a mail sender violates security, and sets a flag to prevent a mail receiver from reading the email if the email violates the security. The virus checking and curing unit checks whether the main body and the attached file are infected with computer viruses, and sets the flag to prevent the mail receiver from reading the email if the main body and the attached file are infected with the computer viruses.Type: ApplicationFiled: November 29, 2002Publication date: October 2, 2003Inventor: Jeong-Hwan Choi
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Patent number: D1019638Type: GrantFiled: March 24, 2021Date of Patent: March 26, 2024Assignee: Life Science Technology, Inc.Inventors: Jeong Hwan Kim, Min Joon Choi