Patents by Inventor Jong-hyun Ahn

Jong-hyun Ahn 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).

  • Patent number: 10147746
    Abstract: A flexible display device includes a flexible substrate, an adhesion layer disposed on a surface of the flexible substrate, and a plurality of pixel structures in respective pixels on the adhesion layer. Each of the pixel structures on the adhesion layer includes a light emitting diode including an inorganic light emitting layer, and a thin film transistor which is connected to the light emitting diode and switches a state of the light emitting diode.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: December 4, 2018
    Assignees: SAMSUNG DISPLAY CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kihyun Kim, Taewoong Kim, Jong-hyun Ahn, Wonho Lee, Minwoo Choi
  • Patent number: 10064269
    Abstract: Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: August 28, 2018
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: John A Rogers, Yonggang Huang, Heung Cho Ko, Mark Stoykovich, Won Mook Choi, Jizhou Song, Jong Hyun Ahn, Dae Hyeong Kim
  • Publication number: 20180211977
    Abstract: A flexible display device includes a flexible substrate, an adhesion layer disposed on a surface of the flexible substrate, and a plurality of pixel structures in respective pixels on the adhesion layer. Each of the pixel structures on the adhesion layer includes a light emitting diode including an inorganic light emitting layer, and a thin film transistor which is connected to the light emitting diode and switches a state of the light emitting diode.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 26, 2018
    Inventors: Kihyun KIM, Taewoong KIM, Jong-hyun AHN, Wonho LEE, Minwoo CHOI
  • Patent number: 9960192
    Abstract: A flexible display device includes a flexible substrate, an adhesion layer disposed on a surface of the flexible substrate, and a plurality of pixel structures in respective pixels on the adhesion layer. Each of the pixel structures on the adhesion layer includes a light emitting diode including an inorganic light emitting layer, and a thin film transistor which is connected to the light emitting diode and switches a state of the light emitting diode.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: May 1, 2018
    Assignees: SAMSUNG DISPLAY CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kihyun Kim, Taewoong Kim, Jong-hyun Ahn, Wonho Lee, Minwoo Choi
  • Publication number: 20170179356
    Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.
    Type: Application
    Filed: January 10, 2017
    Publication date: June 22, 2017
    Inventors: John ROGERS, Ralph NUZZO, Matthew MEITL, Etienne MENARD, Alfred BACA, Michael MOTALA, Jong-Hyun AHN, Sang-Il PARK, Chang-Jae YU, Heung Cho KO, Mark STOYKOVICH, Jongseung YOON
  • Publication number: 20170179085
    Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.
    Type: Application
    Filed: January 10, 2017
    Publication date: June 22, 2017
    Inventors: John ROGERS, Ralph NUZZO, Matthew MEITL, Etienne MENARD, Alfred BACA, Michael MOTALA, Jong-Hyun AHN, Sang-Il PARK, Chang-Jae YU, Heung Cho KO, Mark STOYKOVICH, Jongseung YOON
  • Publication number: 20170179100
    Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.
    Type: Application
    Filed: January 10, 2017
    Publication date: June 22, 2017
    Inventors: John ROGERS, Ralph NUZZO, Matthew MEITL, Etienne MENARD, Alfred BACA, Michael MOTALA, Jong-Hyun AHN, Sang-Il PARK, Chang-Jae YU, Heung Cho KO, Mark STOYKOVICH, Jongseung YOON
  • Patent number: 9601671
    Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: March 21, 2017
    Assignees: The Board of Trustees of the University of Illinois, Semprius, Inc.
    Inventors: John Rogers, Ralph Nuzzo, Matthew Meitl, Etienne Menard, Alfred Baca, Michael Motala, Jong-Hyun Ahn, Sang-Il Park, Chang-Jae Yu, Heung Cho Ko, Mark Stoykovich, Jongseung Yoon
  • Publication number: 20170004899
    Abstract: Provided are method for healing defect of conductive layer, method for forming metal-carbon compound layer, 2D nano materials, and transparent electrode and method for manufacturing the same. According to an embodiment of present invention, the method for healing defect of conductive layer comprises: forming a conductive layer on a first metal substrate; contacting the first metal substrate with a salt solution containing a second metal in an ionic form, and forming a second metal particle at least in a portion of a conductive area, the second metal having greater reduction potential than a first metal.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 5, 2017
    Inventors: TAEYOON LEE, JONG HYUN AHN, Juree HONG, Jae-Bok LEE, Han-Bo-Ram LEE
  • Publication number: 20160308056
    Abstract: Provided is a method for manufacturing an inorganic material having a tensile stress, which includes: forming an inorganic stressor from an inorganic wafer made of an inorganic matter; forming an inorganic layer on the inorganic stressor; and etching a bulk inorganic matter at a lower portion of the inorganic stressor to generate an inorganic material having a tensile stress, wherein the inorganic layer has a tensile stress by etching the bulk inorganic matter to relieve a compressive stress applied to the inorganic stressor when the inorganic stressor is being formed. Therefore, FET and various circuits having higher charge mobility may be realized, and also, since characteristics may be maintained even when being applied to a plastic substrate, high performance flexible electronic device may be manufactured.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 20, 2016
    Applicant: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jong Hyun AHN, Wonho Lee
  • Publication number: 20160293634
    Abstract: A flexible display device includes a flexible substrate, an adhesion layer disposed on a surface of the flexible substrate, and a plurality of pixel structures in respective pixels on the adhesion layer. Each of the pixel structures on the adhesion layer includes a light emitting diode including an inorganic light emitting layer, and a thin film transistor which is connected to the light emitting diode and switches a state of the light emitting diode.
    Type: Application
    Filed: December 29, 2015
    Publication date: October 6, 2016
    Inventors: Kihyun KIM, Taewoong KIM, Jong-hyun AHN, Wonho LEE, Minwoo CHOI
  • Patent number: 9426606
    Abstract: An electronic apparatus is provided. The electronic apparatus includes a communication unit configured to transmit an altered apparatus Identification (ID) and a controller configured to detect a user's action in a pairing mode of the electronic apparatus, to determine additional information according to the user's action, and to transmit the altered apparatus ID including an apparatus ID of the electronic apparatus and the additional information to another electronic apparatus that can be paired with the electronic apparatus.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: August 23, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Wan Lee, Jong-Hyun Ahn
  • Patent number: 9371234
    Abstract: The present invention relates to a method for forming graphene at a low temperature, to a method for direct transfer of graphene using same, and to a graphene sheet. The method for forming graphene at a low temperature comprises supplying a carbon-source-containing gas to a metal catalyst layer for graphene growth formed on a substrate, and forming graphene at a low temperature of 500° C. or less by means of inductively coupled plasma-chemical vapor deposition (ICP-CVD).
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: June 21, 2016
    Assignees: Graphene Square, Inc., Hanwha Techwin Co., Ltd.
    Inventors: Byung Hee Hong, Jong-Hyun Ahn, Ji Beom Yoo, Su Kang Bae, Myung Hee Jung, Houk Jang, Youngbin Lee, Sang Jin Kim
  • Patent number: 9297831
    Abstract: A touch sensor capable of specifying a touch position and/or a degree of a touch pressure by using graphene as an electrode and/or a strain gauge, and more particular, a touch sensor capable of simultaneously detecting a pressure and a position by means of change in resistance by using graphene is provided.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 29, 2016
    Assignee: Graphene Square, Inc.
    Inventors: Jong-Hyun Ahn, Byung Hee Hong, Young Bin Lee, Su Kang Bae, Hyeong Keun Kim
  • Publication number: 20160072027
    Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.
    Type: Application
    Filed: July 15, 2015
    Publication date: March 10, 2016
    Inventors: John ROGERS, Ralph NUZZO, Matthew MEITL, Etienne MENARD, Alfred BACA, Michael MOTALA, Jong-Hyun AHN, Sang-Il PARK, Chang-Jae YU, Heung Cho KO, Mark STOYKOVICH, Jongseung YOON
  • Patent number: 9260309
    Abstract: A method and an apparatus for synthesizing graphene. The method includes loading catalyst metals into a chamber in the horizontal direction or the vertical direction; increasing sizes of grains of the catalyst metals by heating the catalyst metals; raising a temperature inside the chamber while providing a vapor carbon source in the catalyst metals; and forming graphene by cooling the catalyst metals.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: February 16, 2016
    Assignees: RESEARCH & BUSINESS FOUNDATIION SUNGKYUNKWAN UNIVERSITY, Hanwha Techwin Co., Ltd.
    Inventors: Young-Il Song, Hyeong-Keun Kim, Byung-Hee Hong, Jong-Hyun Ahn
  • Patent number: 9236565
    Abstract: Embodiments of the invention provide a method for fabricating a magnetoresistive device. The method comprises: releasing a multi-layer magnetoresistive structure for forming the magnetoresistive device from a first substrate to relax an intrinsic stress in the multi-layer magnetoresistive structure such that the magnetic and/or magnetoresistive properties of the magnetoresistive device can be improved. The magnetic and/or magnetoresistive properties include, but are not limited to coercivity, squareness or abruptness of switching, magnetoresistance (MR) and resistance of the magnetoresistive device.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: January 12, 2016
    Assignees: National University of Singapore, Yonsei University
    Inventors: Li Ming Loong, Hyunsoo Yang, Wonho Lee, Jong-Hyun Ahn, Charanjit Singh Bhatia
  • Publication number: 20150373484
    Abstract: An electronic apparatus is provided. The electronic apparatus includes a communication unit configured to transmit an altered apparatus Identification (ID) and a controller configured to detect a user's action in a pairing mode of the electronic apparatus, to determine additional information according to the user's action, and to transmit the altered apparatus ID including an apparatus ID of the electronic apparatus and the additional information to another electronic apparatus that can be paired with the electronic apparatus.
    Type: Application
    Filed: February 27, 2015
    Publication date: December 24, 2015
    Inventors: Ki-Wan LEE, Jong-Hyun AHN
  • Publication number: 20150311434
    Abstract: Embodiments of the invention provide a method for fabricating a magnetoresistive device. The method comprises: releasing a multi-layer magnetoresistive structure for forming the magnetoresistive device from a first substrate to relax an intrinsic stress in the multi-layer magnetoresistive structure such that the magnetic and/or magnetoresistive properties of the magnetoresistive device can be improved. The magnetic and/or magnetoresistive properties include, but are not limited to coercivity, squareness or abruptness of switching, magnetoresistance (MR) and resistance of the magnetoresistive device.
    Type: Application
    Filed: April 28, 2015
    Publication date: October 29, 2015
    Inventors: Li Ming Loong, Hyunsoo Yang, Wonho Lee, Jong-Hyun Ahn, Charanjit Singh Bhatia
  • Patent number: 9117940
    Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 25, 2015
    Assignees: The Board of Trustees of the University of Illinois, Semprius, Inc.
    Inventors: John Rogers, Ralph Nuzzo, Matthew Meitl, Etienne Menard, Alfred Baca, Michael Motala, Jong-Hyun Ahn, Sang-Il Park, Chang-Jae Yu, Heung Cho Ko, Mark Stoykovich, Jongseung Yoon