Patents by Inventor Dong-Hyeon Choi

Dong-Hyeon 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).

  • Publication number: 20240179932
    Abstract: The present disclosure relates to an organic light emitting diode and an organic light emitting device including the same. The organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and a first blue emitting material layer including a first compound and a second compound and positioned between the first and second electrodes, wherein the first compound is represented by Formula 1, and the second compound is represented by Formula 3. According to an aspect of the present disclosure, it is allowed to provide an OLED and an organic light emitting device having high emitting efficiency and/or improved lifespan.
    Type: Application
    Filed: October 31, 2023
    Publication date: May 30, 2024
    Applicants: LG DISPLAY CO., LTD., LT Materials Co.,Ltd
    Inventors: Ji-Seon JANG, Chi-Ho LEE, Suk-Young BAE, Han-Jin AHN, Jun-Yun KIM, Dae-Hyuk CHOI, Dong-Jun KIM, Yong-Woo KIM, Yong-Geun JUNG, Jin-Hwan SHIN, Seok-Hyeon YU
  • Patent number: 11996242
    Abstract: A multilayer capacitor includes a body including a dielectric layer and a plurality of internal electrodes stacked on each other having the dielectric layer interposed therebetween; and external electrodes including electrode layers positioned externally on the body and connected to the internal electrodes, respectively, wherein the body includes a first surface and a second surface, opposing each other, and to which the plurality of internal electrodes are respectively exposed, and a third surface and a fourth surface which are connected to the first surface and the second surface, and oppose each other in a direction in which the plurality of internal electrodes are stacked on each other, each of the electrode layers including a first region covering the first or second surface and a second region covering the third or fourth surface and having surface roughness lower than that of the first region.
    Type: Grant
    Filed: April 6, 2022
    Date of Patent: May 28, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Byeong Guk Choi, Dong Yeong Kim, Chung Hyeon Ryu, Seung Been Kim
  • Publication number: 20240162113
    Abstract: In one example, an electronic device comprises a substrate comprising a conductive structure and an inner side and an outer side, a first electronic component over the inner side of the substrate and coupled with the conductive structure, a lid over the substrate and the first electronic component and comprising a first hole in the lid, and a thermal interface material between the first electronic component and the lid. The thermal interface material is in the first hole. Other examples and related methods are also disclosed herein.
    Type: Application
    Filed: November 11, 2022
    Publication date: May 16, 2024
    Applicants: Amkor Technology Singapore Holding Pte. Ltd., Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Dong Hyeon Park, Yun Ah Kim, Seok Ho Na, Won Ho Choi, Dong Su Ryu, Jo Hyun Bae, Min Jae Kong, Jin Young Khim, Jae Yeong Bae, Dong Hee Kang
  • Patent number: 11953958
    Abstract: 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: Grant
    Filed: December 12, 2022
    Date of Patent: April 9, 2024
    Assignee: 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
  • Patent number: 11932993
    Abstract: A paper coating composition, methods for making the same, and a coated paper. The paper coating composition comprises a solvent, an ethylene-(meth)acrylic acid copolymer, a basic compound, and a polycarbodiimide-based curing agent, wherein the polycarbodiimide-based curing agent has a carbodiimide group equivalent of about 150 to about 350. The coating of the coated paper likewise comprises an ethylene-(meth)acrylic acid copolymer crosslinked by N-acylurea groups.
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: March 19, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Dong Hyun Woo, Sang Ha Son, Ji Hyeon Choi, Bu Yeon Hwang
  • Publication number: 20200313018
    Abstract: Provided are a backsheet for a solar cell module and a manufacturing method thereof. More particularly, the present invention relates to a novel backsheet for a photovoltaic module capable of replacing a structure in which a fluoride film/a polyethylene terephthalate (PET) film/a fluoride film or a white polyester film/a transparent polyester film/a white polyethylene film are stacked according to the related art with a single layer polyester film, and capable of being used in a double-sided light receiving photovoltaic module as well as a general front-sided light receiving photovoltaic module to replace a glass or fluorine-based polymer resin.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 1, 2020
    Applicant: KOLON INDUSTRIES, INC.
    Inventor: Dong-Hyeon CHOI
  • Patent number: 10065405
    Abstract: This disclosure relates to a film for a tire inner liner film that may exhibit uniform excellent physical properties over all directions when applied to a tire, and may secure excellent durability and fatigue resistance in a tire manufacturing process or in an automobile running process, a method for manufacturing the film for a tire inner liner, a pneumatic tire using the tire inner liner film, and a method for manufacturing the pneumatic tire using the tire inner liner film.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: September 4, 2018
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Yun-Jo Kim, Si-Min Kim, Dong-Jin Kim, Il Chung, Dong-Hyeon Choi
  • Patent number: 10000002
    Abstract: The present invention relates to: a method for manufacturing a polymer film, the method including a base film forming step for co-extruding a first resin containing a polyamide-based resin and a second resin containing a copolymer including polyamide-based segments and polyether-based segments; a co-extruded film including a base film including a first resin layer containing a polyamide-based resin, and a second resin layer containing a copolymer having polyamide-based segments and polyether-based segments; to a co-extruded film including a base film including a first resin layer and a second resin layer, which have different melting points; and to a method for manufacturing a polymer film, the method including a base film forming step including a step of co-extruding a first resin and a second resin, which have different melting points.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: June 19, 2018
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Yun-Jo Kim, Si-Min Kim, Dong-Hyeon Choi, Dong-Jin Kim
  • Patent number: 9833943
    Abstract: Provided are a polyester white film and a back sheet for a solar cell module using the same, and in particular, provided is a polyester white film having improved light reflectance.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: December 5, 2017
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Yun Jo Kim, Dong-Hyeon Choi, Si Min Kim
  • Publication number: 20160318227
    Abstract: The present invention relates to: a method for manufacturing a polymer film, the method including a base film forming step for co-extruding a first resin containing a polyamide-based resin and a second resin containing a copolymer including polyamide-based segments and polyether-based segments; a co-extruded film including a base film including a first resin layer containing a polyamide-based resin, and a second resin layer containing a copolymer having polyamide-based segments and polyether-based segments; to a co-extruded film including a base film including a first resin layer and a second resin layer, which have different melting points; and to a method for manufacturing a polymer film, the method including a base film forming step including a step of co-extruding a first resin and a second resin, which have different melting points.
    Type: Application
    Filed: December 30, 2014
    Publication date: November 3, 2016
    Inventors: Yun-Jo KIM, Si-Min KIM, Dong-Hyeon CHOI, Dong-Jin KIM
  • Publication number: 20150027530
    Abstract: Provided are a polyester white film and a back sheet for a solar cell module using the same, and in particular, provided is a polyester white film having improved light reflectance.
    Type: Application
    Filed: February 21, 2013
    Publication date: January 29, 2015
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Yun Jo Kim, Dong-Hyeon Choi, Si Min Kim
  • Publication number: 20150017361
    Abstract: This disclosure relates to a film for a tire inner liner film that may exhibit uniform excellent physical properties over all directions when applied to a tire, and may secure excellent durability and fatigue resistance in a tire manufacturing process or in an automobile running process, a method for manufacturing the film for a tire inner liner, a pneumatic tire using the tire inner liner film, and a method for manufacturing the pneumatic tire using the tire inner liner film.
    Type: Application
    Filed: March 8, 2013
    Publication date: January 15, 2015
    Applicant: KOLON INDUSTRIES, INC
    Inventors: Yun-Jo Kim, Si-Min Kim, Dong-Jin Kim, II Chung, Dong-Hyeon Choi