Patents by Inventor Gyu-Chul Yi

Gyu-Chul Yi 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: 9853106
    Abstract: Provided are a nano-structure assembly including an insulating substrate; and a nano-structure formed on the insulating substrate, and a nano-device including the same.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: December 26, 2017
    Assignee: SNU R&DB Foundation
    Inventors: Gyu Chul Yi, Hong Seok Oh
  • Patent number: 9343624
    Abstract: A light emitting device is disclosed. The light emitting device includes a conductive support layer; a reflective layer disposed on the conductive support layer; a nitride semiconductor layer disposed on the reflective layer. Furthermore, the nitride semiconductor layer includes a second-type semiconductor layer on the reflective layer, an active layer on the second-type semiconductor layer, and a first-type semiconductor layer on the active layer; a light extraction structure disposed on the first-type semiconductor layer; and a first-type electrode disposed on the light extraction structure.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: May 17, 2016
    Assignees: LG ELECTRONICS INC., LG Innotek Co., Ltd.
    Inventors: Jong Wook Kim, Hyun Kyong Cho, Gyu Chul Yi, Sung Jin An, Jin Kyoung Yoo, Young Joon Hong
  • Publication number: 20160035838
    Abstract: Provided are a nano-structure assembly including an insulating substrate; and a nano-structure formed on the insulating substrate, and a nano-device including the same.
    Type: Application
    Filed: July 1, 2013
    Publication date: February 4, 2016
    Inventors: Gyu Chul YI, Hong Seck Oh
  • Publication number: 20150102370
    Abstract: A light emitting device is disclosed. The light emitting device includes a conductive support layer; a reflective layer disposed on the conductive support layer; a nitride semiconductor layer disposed on the reflective layer. Furthermore, the nitride semiconductor layer includes a second-type semiconductor layer on the reflective layer, an active layer on the second-type semiconductor layer, and a first-type semiconductor layer on the active layer; a light extraction structure disposed on the first-type semiconductor layer; and a first-type electrode disposed on the light extraction structure.
    Type: Application
    Filed: November 24, 2014
    Publication date: April 16, 2015
    Applicants: LG INNOTEK CO., LTD., LG ELECTRONICS INC.
    Inventors: Jong Wook KIM, Hyun Kyong CHO, Gyu Chul YI, Sung Jin AN, Jin Kyoung YOO, Young Joon HONG
  • Patent number: 8912556
    Abstract: A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: December 16, 2014
    Assignees: LG Electronics Inc., LG Innotek Co., Ltd.
    Inventors: Jong Wook Kim, Hyun Kyong Cho, Gyu Chul Yi, Sung Jin An, Jin Kyoung Yoo, Young Joon Hong
  • Patent number: 8878231
    Abstract: The present invention provides a light emission device and a manufacturing method thereof. The light emission device includes: i) a substrate; ii) a mask layer disposed on the substrate and having at least one opening; iii) a light emission structure formed on the mask layer surrounding the opening and extended substantially perpendicular to a surface of the substrate; iv) a first electrode formed on the mask layer while surface-contacting the external surface of the light emission structure; and v) a second electrode disposed in the light emission structure and surface-contacting the internal surface of the light emission structure.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 4, 2014
    Assignee: SNU R&DB Foundation
    Inventors: Gyu-Chul Yi, Chul-Ho Lee
  • Publication number: 20140291690
    Abstract: Provided are an optical device and a method for manufacturing same. The optical device according to the present invention including: a transparent amorphous substrate; a current injection layer formed on the substrate; a graphite layer formed on the current injection layer; and a semiconductor unit formed on the graphite layer, wherein the semiconductor unit is formed after forming the graphite layer on the amorphous substrate, thereby overcoming the problems of conventional methods that involve forming a semiconductor unit on an amorphous substrate, and the semiconductor unit of the present invention has superior crystallinity.
    Type: Application
    Filed: August 14, 2012
    Publication date: October 2, 2014
    Applicant: SNU R&DB FOUNDATION
    Inventors: Gyu-chul Yi, Kunook Chung
  • Publication number: 20140117378
    Abstract: A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
    Type: Application
    Filed: January 6, 2014
    Publication date: May 1, 2014
    Applicants: LG Innotek Co., Ltd., LG Electronics Inc.
    Inventors: Jong Wook KIM, Hyun Kyong CHO, Gyu Chul YI, Sung Jin AN, Jin Kyoung YOO, Young Joon HONG
  • Patent number: 8664641
    Abstract: Disclosed herein is a nano device, including: a carbon layer including one-layered graphene having a honeycombed planar structure in which carbon atoms are connected with each other and two or more-layered monocrystalline graphite; and one or more vertically-grown nanostructures formed on the carbon layer. This nano device can be used to manufacture an integrated circuit in which various devices including a graphene electronic device and a photonic device are connected with each other, and is a high-purity and high-quality nano device having a small amount of impurities because a metal catalyst is not used.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 4, 2014
    Assignee: SNU R&DB Foundation
    Inventors: Gyu-chul Yi, Yong-Jin Kim
  • Patent number: 8643035
    Abstract: A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: February 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jong Wook Kim, Hyun Kyong Cho, Gyu Chul Yi, Sung Jin An, Jin Kyoung Yoo, Young Joon Hong
  • Patent number: 8598607
    Abstract: A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: December 3, 2013
    Assignees: LG Electronics Inc., LG Innotek Co., Ltd.
    Inventors: Jong Wook Kim, Hyun Kyong Cho, Gyu Chul Yi, Sung Jin An, Jin Kyoung Yoo, Young Joon Hong
  • Patent number: 8357922
    Abstract: A nanodevice, a transistor including the nanodevice, a method of manufacturing the nanodevice, and a method of manufacturing the transistor including the nanodevice are provided. The nanodevice includes a substrate, a mask layer located on the substrate and having at least one opening, and a nanotube formed on the substrate through the opening along an edge of the opening. The nanotube extends through the opening in a direction substantially perpendicular to a surface of the substrate.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: January 22, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Joon Hong, Gyu-Chul Yi
  • Publication number: 20120241757
    Abstract: A light emitting device and a method of manufacturing the same are disclosed. The light emitting device includes a buffer layer formed on a substrate, a nitride semiconductor layer including a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially stacked on the buffer layer, a portion of the first semiconductor layer being exposed to the outside by performing mesa etching from the second semiconductor layer to the portion of the first semiconductor layer, and at least one nanocone formed on the second semiconductor layer.
    Type: Application
    Filed: June 5, 2012
    Publication date: September 27, 2012
    Inventors: Jong Wook KIM, Hyun Kyong Cho, Gyu Chul YI, Sung Jin An, Jin Kyoung Yoo, Young Joon Hong
  • Patent number: 8242676
    Abstract: A field emission device, a field emission display device, and a method for manufacturing the same are disclosed. The field emission device includes: i) a substrate; ii) an electrode positioned on the substrate; iii) a mask layer positioned on the electrode and including one or more openings; and iv) a plurality of nanostructures positioned on the electrode via the openings and formed to extend radially. The plurality of nanostructures may be applied to emit an electron upon receiving a voltage from the electrode.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: August 14, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Jin Kim, Jin-Kyoung Yoo, Young-Joon Hong, Gyu-Chul Yi, Chul-Ho Lee
  • Publication number: 20120132892
    Abstract: Disclosed herein is a nano device, including: a carbon layer including one-layered graphene having a honeycombed planar structure in which carbon atoms are connected with each other and two or more-layered monocrystalline graphite; and one or more vertically-grown nanostructures formed on the carbon layer. This nano device can be used to manufacture an integrated circuit in which various devices including a graphene electronic device and a photonic device are connected with each other, and is a high-purity and high-quality nano device having a small amount of impurities because a metal catalyst is not used.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 31, 2012
    Applicant: SNU R&DB FOUNDATION
    Inventors: Gyu-chul Yi, Yong-Jin Kim
  • Publication number: 20120111801
    Abstract: Disclosed is a near-field photocatalyst using a ZnO (ZnO) nanowire. The photocatalyst is advantageous in that low-priced zinc is used instead of titanium, conventionally used as a photocatalyst to reduce expenses, and that it is possible to obtain overvoltage which is sufficient to generate hydrogen using an optical near field formed around an end of a ZnO nanowire without the application of additional external voltage, thus the use of a costly electrode, such as platinum, is avoided and a process is simplified.
    Type: Application
    Filed: August 31, 2005
    Publication date: May 10, 2012
    Applicants: Seoul National University R & DB Foundation, POSTECH FOUNDATION
    Inventors: Gyu-chul Yi, Motoichi Ohtsu, Takashi Yatsui
  • Publication number: 20120061646
    Abstract: The present invention provides a light emission device and a manufacturing method thereof. The light emission device includes: i) a substrate; ii) a mask layer disposed on the substrate and having at least one opening; iii) a light emission structure formed on the mask layer surrounding the opening and extended substantially perpendicular to a surface of the substrate; iv) a first electrode formed on the mask layer while surface-contacting the external surface of the light emission structure; and v) a second electrode disposed in the light emission structure and surface-contacting the internal surface of the light emission structure.
    Type: Application
    Filed: May 18, 2010
    Publication date: March 15, 2012
    Applicant: SUN R&DB FOUNDATION
    Inventors: Gyu-Chul Yi, Chul-Ho Lee
  • Patent number: 8022432
    Abstract: Disclosed herein is an electrical light-emitting device including a transparent conductive nanorod type electrode, in which transparent conductive nanorods grown perpendicular to a light-emitting layer are used as the electrode. Hence, light is not absorbed by the electrode, and tunneling easily occurs due to nanocontact of the nanorods, thus increasing current injection efficiency, and also, total internal reflections decrease. Thereby, the light-emitting device according to this invention has light-emitting properties and luminous efficiency superior to conventional light-emitting devices, including metal electrodes or thin film type transparent electrodes.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: September 20, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Gyu-chul Yi, Sung-Jin An
  • Patent number: 8003192
    Abstract: A nanodevice including a nanorod and a method for manufacturing the same is provided. The nanodevice according to an embodiment of the present invention includes i) a substrate; ii) at least one crystal that is located on the substrate and includes a plurality of side surfaces forming an angle with each other; and iii) at least one nanorod that is located on the crystal and extends along a direction that is substantially perpendicular to a surface of the substrate.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: August 23, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Joon Hong, Gyu-Chul Yi
  • Publication number: 20110017973
    Abstract: A nanodevice, a transistor including the nanodevice, a method of manufacturing the nanodevice, and a method of manufacturing the transistor including the nanodevice are provided. The nanodevice includes a substrate, a mask layer located on the substrate and having at least one opening, and a nanotube formed on the substrate through the opening along an edge of the opening. The nanotube extends through the opening in a direction substantially perpendicular to a surface of the substrate.
    Type: Application
    Filed: February 5, 2008
    Publication date: January 27, 2011
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Young-Joon Hong, Gyu-Chul Yi