Patents by Inventor Hyun-Nam Cho

Hyun-Nam Cho 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).

  • Publication number: 20220405575
    Abstract: The present invention relates to a user knowledge tracking method with more improved accuracy. An operation method of a user drop-out rate prediction system including a plurality of encoder neural networks and a plurality of decoder neural networks may include the steps of: inputting question information to a kth encoder neural network and inputting response information to a kth decoder neural network; generating query data, which is information about a question of which the correct answer probability is desired to be identified by the user, by reflecting a weight to the response information, and generating attention information to be used as a weight for the query data by reflecting a weight to the question information; and learning the user drop-out rate prediction system using the attention information as a weight for the query data.
    Type: Application
    Filed: June 18, 2021
    Publication date: December 22, 2022
    Inventors: Young Nam LEE, Dong Min SHIN, Hyun Bin LOH, Jae Min LEE, Pil Jae CHAE, Jung Hyun CHO, Seo Yon PARK, Jin Hwan LEE, Jin Eon BAEK, Byung Soo KIM, Young Duck CHOI
  • Publication number: 20220398434
    Abstract: The present disclosure relates to a system capable of increasing the accuracy of a prediction result when predicting a user drop-out rate or predicting a correct answer probability of a user in an online learning environment, and further relates to an operation method of the system. A system according to the present disclosure may include a plurality of encoder neural networks and a plurality of decoders, and may input question information to a kth encoder neural network and input response information to kth decoder neural network to learn the system, thereby predicting the user drop-out rate information and the users correct answer probability information with higher accuracy on the basis of the learned system.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 15, 2022
    Inventors: Young Nam LEE, Dong Min SHIN, Hyun Bin LOH, Jae Min LEE, Pil Jae CHAE, Jung Hyun CHO, Seo Yon PARK, Jin Hwan LEE, Jin Eon BAEK, Byung Soo KIM, Young Duck CHOI, Yeong Min CHA, Chan BAE, Jae We HEO
  • Publication number: 20220376200
    Abstract: The present disclosure provides a quantum dot (QD) light emitting diode including: a first electrode; a second electrode facing the first electrode; a QD emitting material layer positioned between the first electrode and the second electrode and including a QD and an organic material; a hole auxiliary layer positioned between the first electrode and the QD emitting material layer; and an electron auxiliary layer positioned between the QD emitting material layer and the second electrode, wherein the organic material has a highest occupied molecular orbital (HOMO) level higher than a material of the hole auxiliary layer.
    Type: Application
    Filed: July 28, 2022
    Publication date: November 24, 2022
    Applicants: LG DISPLAY CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Kyu-Nam KIM, Duk-Young JEON, Hyun-Jin CHO, Sun-Joong PARK
  • Patent number: 11498945
    Abstract: The present invention relates to an immunogenic fragment peptide of an EN2 protein or an antibody composition specifically recognizing the same. In the present invention, EN2 protein can be quantified through a method of specifically recognizing the peptide. Also, an antibody prepared using the peptide has vastly superior detection sensitivity compared to existing EN2 protein antibodies and thus can be useful in a diagnostic agent for diagnosing prostate cancer.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: November 15, 2022
    Assignee: Sung Kyun Biotech Co., Ltd.
    Inventors: Kyeong-Nam Yu, Eun-Yi Cho, Seung-Hee Chang, Seon-Hee Kim, Hyun-Suk Kim, Ki-Moon Park
  • Patent number: 11417850
    Abstract: The present disclosure provides a quantum dot (QD) light emitting diode including: a first electrode; a second electrode facing the first electrode; a QD emitting material layer positioned between the first electrode and the second electrode and including a QD and an organic material; a hole auxiliary layer positioned between the first electrode and the QD emitting material layer; and an electron auxiliary layer positioned between the QD emitting material layer and the second electrode, wherein the organic material has a highest occupied molecular orbital (HOMO) level higher than a material of the hole auxiliary layer.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: August 16, 2022
    Assignees: LG Display Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Kyu-Nam Kim, Duk-Young Jeon, Hyun-Jin Cho, Sun-Joong Park
  • Patent number: 9914743
    Abstract: Provided herein is a method for preparing a silver complex. The method includes reacting a silver oxide with a mixture of ammonium carbamate and isopropyl amine at room temperature in the presence of methanol.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: March 13, 2018
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang-Choon Chung, Hyun-Nam Cho, Myoung-Seon Gong, Yi-Sup Han, Jeong-Bin Park, Dong-Hun Nam, Seong-Yong Uhm, Young-Kwan Seo
  • Patent number: 9873662
    Abstract: Provided are a metal precursor containing an oxime group, which is represented by general formula 1, and a metal precursor ink containing same. The metal precursor ink according to the present invention enhance metal content, induce intramolecular and/or intermolecular complexation, thereby enabling low temperature sintering with excellent solubility and stability. The metal precursor ink according to the present invention can be used to form a metal wire with a desired shape. Therefore, the metal precursor ink can find applications in the field of printed electronics, particularly various electrodes, such as mesh type transparent electrodes.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: January 23, 2018
    Assignee: PESOLVE CO., LTD.
    Inventors: Hyun Nam Cho, Hyun Ju Kim
  • Patent number: 9803098
    Abstract: Provided is a conductive ink including a conductive material and at least one benzoxazine-based compound. The conductive ink of the present invention can be easily formed into a thin film, is highly conductive after sintering, and has superior adhesion to various substrates. In addition, the use of the conductive ink according to the present invention facilitates the formation of a glossy, mirror-like metal thin film with high reflectance.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: October 31, 2017
    Assignee: PESOLVE CO., LTD.
    Inventors: Hyun Nam Cho, Hyun Ju Kim
  • Patent number: 9786843
    Abstract: The invention relates to methods for fabricating an optoelectronic device, including: directly applying a printing ink composition to a patterning process, wherein the printing ink composition includes (1) at least one compound selected from the group of compounds represented by Chemical Formula 1, Chemical Formula 2, Chemical Formula 3, and mixtures thereof as disclosed herein in an amount of 0.01-90 wt % based on the total weight of the composition and (2) at least one material for an optoelectronic device.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 10, 2017
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang Choon Chung, Hyun Nam Cho, Ji Hoon Yoo
  • Patent number: 9683123
    Abstract: Provided is a silver ink including, as a major component, a silver malonate precursor represented by Formula 1 or Formula 2.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: June 20, 2017
    Assignee: PESOLVE CO., LTD.
    Inventors: Hyun Nam Cho, Hyun Ju Kim
  • Patent number: 9556065
    Abstract: The present invention relates to a method for producing a transparent conductive film in a form of complex multi-layer film comprising at least one layer using a silver complex compound having special structure and an organic acid metal salt. The method for producing the transparent conductive film, using one or more solution processes, comprises steps of (1) forming a transparent layer over a transparent substrate to improve transmittance; and (2) forming the conductive layer allowing conductivity, and further comprises a step of (3) forming a protective layer to prevent a change over time of the conductive layer. According to the present invention, it is possible to achieve large-scaled transparent conductive film having excellent conductivity and transmittance, as well as simple processes.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: January 31, 2017
    Assignee: Inktec Co., Ltd.
    Inventors: Hyun Nam Cho, Ji Hoon Yoo, Kwang Choon Chung
  • Patent number: 9431616
    Abstract: Provided are a phosphaphenanthrene-carbazole-based organic light-emitting compound having superior light emitting properties, and an organic light-emitting device including the same.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: August 30, 2016
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang Choon Chung, Hyun Nam Cho, Ji Hoon Yoo, Yun Ho Jung
  • Patent number: 9396843
    Abstract: The present invention relates to a method of manufacturing a transparent conductive layer and a transparent conductive layer manufactured by the method. The method of manufacturing the transparent conductive layer includes: a) a step of forming a conductive nanowire layer on a base material; b) a step of thermally treating the conductive nanowire layer; c) a step of applying a conductive metal ink on the conductive nanowire layer; and d) a step of thermally treating the base material coated with the conductive metal ink to electrically bridge the conductive nanowires with each other by conductive metal particles of the conductive metal ink.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 19, 2016
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang-Choon Chung, Hyun-Nam Cho, Nam Jung Kim, Insook Yi, Jung Ah Choi, Su Phil Kim
  • Publication number: 20160194339
    Abstract: Provided herein is a method for preparing a silver complex. The method includes reacting a silver oxide with a mixture of ammonium carbamate and isopropyl amine at room temperature in the presence of methanol.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Inventors: Kwang-Choon Chung, Hyun-Nam Cho, Myoung-Seon Gong, Yi-Sup Han, Jeong-Bin Park, Dong-Hun Nam, Seong-Yong Uhm, Young-Kwan Seo
  • Publication number: 20160185990
    Abstract: Provided is a conductive ink including a conductive material and at least one benzoxazine-based compound selected from structures represented by Formula 1.
    Type: Application
    Filed: July 30, 2014
    Publication date: June 30, 2016
    Inventors: Hyun Nam CHO, Hyun Ju KIM
  • Publication number: 20160168408
    Abstract: Provided is a silver ink including, as a major component, a silver malonate precursor represented by Formula 1 or Formula 2.
    Type: Application
    Filed: August 5, 2014
    Publication date: June 16, 2016
    Applicant: PESOLVE CO., LTD.
    Inventors: Hyun Nam CHO, Hyun Ju KIM
  • Patent number: 9365935
    Abstract: The present invention provides an etching solution for silver or silver alloy comprising one at least ammonium compound represented by the formula (1), (2) or (3) below and an oxidant: wherein each of the variables is as defined herein.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: June 14, 2016
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang Choon Chung, Hyun-Nam Cho, Young-Kwan Seo
  • Patent number: 9299483
    Abstract: Provided are a method for manufacturing a transparent conductive film and a transparent conductive film manufactured thereby, the method including: a) forming a coating film by coating a transparent conductive film coating solution on a substrate, the transparent conductive film coating solution including a non-polar solvent; a polar solvent; a conductive metal ink; and a surfactant; and b) forming a conductive pattern having a hole type transmissive part and a pattern part formed of the conductive metal ink, on the substrate, by drying and burning the coating film.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: March 29, 2016
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang Choon Chung, Hyun Nam Cho, Ji Hoon Yoo, Yun-Ho Jung
  • Patent number: 9290844
    Abstract: Provided is a method for manufacturing a metal film, including: coating or printing a metal ink containing an organic metal complex on a substrate; and necessarily parallel-performing a pressure process during a procedure of forming metal particles by firing the metal ink, thereby forming a conductive metal film. The present invention can provide a method for manufacturing a metal film capable of improving film characteristics such as conductivity, reflectance, and uniformity in thickness, and the like, as well as remarkably shortening the time for forming the metal film, thereby efficiently manufacturing a superior-quality metal film.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: March 22, 2016
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang Choon Chung, Hyun Nam Cho, Ji Hoon Yoo, Jae Ho Beak, Yoo Seong Kim
  • Patent number: 9269478
    Abstract: Provided are a method for preparing a transparent conductive layer and a transparent conductive layer prepared by the method. The method for preparing a transparent conductive layer includes: 1) forming a cellulose derivative film by coating a transparent substrate with a cellulose derivative coating liquid; 2) hydrolyzing the cellulose derivatives by treating the cellulose derivative film using an alkaline agent; 3) forming a metal film by coating the hydrolyzed cellulose derivative film with an organic metal ink and reducing metals on the cellulose derivative; and 4) forming a conductive metal layer by heat-treating the cellulose derivative film with the metal film formed, and a transparent conductive layer prepared by the method. According to the present invention, a process can be simplified, and also a transparent conductive layer having excellent conductivity, transmittance, bending resistance, and low haze can be prepared.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: February 23, 2016
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang Choon Chung, Hyun Nam Cho, Ji Hoon Yoo, Yun Ho Jung, Su Phil Kim