Patents by Inventor Choon Chung

Choon Chung 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: 9832882
    Abstract: Provided herein is a conductive pattern making method and conductive pattern, the method including forming a groove such that its width in an inlet area is bigger than its width in an inner area; filling the groove with a conductive ink composition; and drying the conductive ink composition so that a solvent contained in the conductive ink composition inside the groove is volatilized to reduce the volume of the conductive ink composition.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: November 28, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Dae Sang Han, Nam-Boo Cho
  • Patent number: 9831487
    Abstract: Provided herein is a method for forming a transparent electrode film, the method comprising forming an electrode pattern by printing an electrode pattern on a release film using a metal ink composition; forming an insulating layer by applying a curable resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; removing the release film; and forming a conductive layer by applying a conductive material on the electrode pattern from which the release film has been removed.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: November 28, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, In-Sook Yi, Ji Hoon Yoo, Joonki Seong, Dae Sang Han
  • Patent number: 9832881
    Abstract: Provided herein is a method for forming a transparent electrode film for display and the transparent electrode film for display, the method comprising forming an electrode pattern by printing a fine electrode pattern on a release film using a conductive ink composition; forming an insulating layer by applying an insulating resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; and removing the release film.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: November 28, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Dae sang Han
  • Publication number: 20170324167
    Abstract: Disclosed are exemplary embodiments of a low profile wideband and/or multiband omnidirectional antennas. In an exemplary embodiment, an antenna generally includes a radiator and a ground plane. The ground plane may include a slanted surface along or defining an edge portion of the ground plane. The slanted surface may be configured to be operable for reducing null at azimuth plane to thereby allow the antenna to have more omnidirectional radiation patterns for the azimuth plane. In another exemplary embodiment, an antenna generally includes a substrate, a radiator along the substrate, and electrically-conductive tape or foil defining at least part of a ground plane. The electrically-conductive tape or foil is coupled to a ground of the radiator via proximity coupling and electrically insulated by masking of the substrate.
    Type: Application
    Filed: August 19, 2016
    Publication date: November 9, 2017
    Inventors: Kok Jiunn NG, Choon Chung SU, Chit Yong HANG
  • Patent number: 9788418
    Abstract: Provided herein is a method for manufacturing a conductive transparent substrate, the method including forming a plurality of main electrodes on the substrate such that the main electrodes are distanced from one another; and forming a connecting electrode that electrically connects two or more main electrodes such that the plurality of main electrodes are grouped into a plurality of group electrodes that are electrically disconnected from one another, thereby producing a conductive transparent substrate with excellent transmittance in a process of high yield.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: October 10, 2017
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Byung Hun Kim, Nam-Boo Cho, Myung-Bong Yoo
  • 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: 9680215
    Abstract: Disclosed are exemplary embodiments of omnidirectional broadband antennas and capacitively grounded cable brackets. In an exemplary embodiment, an omnidirectional broadband antenna generally includes a ground element, an antenna element, an annular element, and a cable bracket capacitively grounded to the ground element. The cable bracket is configured to allow soldering of a cable braid to the cable bracket for feeding the antenna element without direct galvanic contact between the cable braid and the ground element.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: June 13, 2017
    Assignee: Laird Technologies, Inc.
    Inventors: Choon Chung Su, Kok Jiunn Ng, Henrik Karl Ramberg
  • Patent number: 9671542
    Abstract: Provided herein is a method for producing a nano polaroid film using a one-pack type or two-pack type blackening ink so that a single layer film may replace a conventional polaroid film generally produced by superposing various types of optical films, and especially, a method for producing a nano polaroid film consisting of one film and having excellent observability by coating a transparent nano pattern substrate with a functional ink that contains a blackening material, and then removing particles formed on protruding portions using an etching solution, and refilling the functional ink into grooves.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 6, 2017
    Assignee: InkTec Co., Ltd.
    Inventors: Kwang-Choon Chung, Insook Yi, MinHee Kim, Ji Hoon Yoo
  • Publication number: 20170127528
    Abstract: The present disclosure relates to an apparatus for manufacturing FPCB and method for manufacturing FPCB, having no limitations of length of a circuit pattern being formed on a base film.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 4, 2017
    Inventors: Kwang-Choon Chung, Byung Woong Moon
  • 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
  • Publication number: 20170025750
    Abstract: Disclosed are exemplary embodiments of omnidirectional broadband antennas and capacitively grounded cable brackets. In an exemplary embodiment, an omnidirectional broadband antenna generally includes a ground element, an antenna element, an annular element, and a cable bracket capacitively grounded to the ground element. The cable bracket is configured to allow soldering of a cable braid to the cable bracket for feeding the antenna element without direct galvanic contact between the cable braid and the ground element.
    Type: Application
    Filed: July 21, 2015
    Publication date: January 26, 2017
    Inventors: Choon Chung Su, Kok Jiunn Ng, Henrik Karl Ramberg
  • Publication number: 20170025766
    Abstract: Disclosed are exemplary embodiments of omnidirectional single-input single-output (SISO) multiband/broadband antennas. In an exemplary embodiment, an omnidirectional SISO multiband/broadband antenna generally includes a radiator element having a single piece construction with a stamped cone shape defined by multiple stamped portions.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 26, 2017
    Inventors: Choon Chung SU, Athanasios Petropoulos, Kok Jiunn NG
  • Patent number: 9524046
    Abstract: Provided herein is a method for producing a hybrid transparent electrode, the method including filling grooves of a substrate with a conductive metal ink composition; filling the grooves with residue conductive metal ink composition that remains on a surface of the substrate as the grooves are being filled with the conductive metal ink composition to form an electrode pattern; and forming a conductive layer including a conductive material on the electrode pattern.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: December 20, 2016
    Assignee: INKTEC CO., LTD.
    Inventors: Kwang-Choon Chung, In-Sook Yi, Ji Hoon Yoo, Joonki Seong, Dae sang Han
  • 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
  • Publication number: 20160234943
    Abstract: Provided herein is a method for forming a transparent electrode film for display and the transparent electrode film for display, the method comprising forming an electrode pattern by printing a fine electrode pattern on a release film using a conductive ink composition; forming an insulating layer by applying an insulating resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; and removing the release film.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 11, 2016
    Applicant: INKTEC CO., LTD.
    Inventors: Kwang-Choon CHUNG, Ji Hoon Yoo, Joonki SEONG, Dae sang Han
  • 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: 20160202404
    Abstract: Provided herein is a method for producing a nano polaroid film using a one-pack type or two-pack type blackening ink so that a single layer film may replace a conventional polaroid film generally produced by superposing various types of optical films, and especially, a method for producing a nano polaroid film consisting of one film and having excellent observability by coating a transparent nano pattern substrate with a functional ink that contains a blackening material, and then removing particles formed on protruding portions using an etching solution, and refilling the functional ink into grooves.
    Type: Application
    Filed: June 3, 2014
    Publication date: July 14, 2016
    Inventors: Kwang-Choon CHUNG, Insook YI, MinHee KIM, Ji Hoon YOO
  • 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: 20160192477
    Abstract: Provided herein is a method for manufacturing a conductive transparent substrate, the method including forming a plurality of main electrodes on the substrate such that the main electrodes are distanced from one another; and forming a connecting electrode that electrically connects two or more main electrodes such that the plurality of main electrodes are grouped into a plurality of group electrodes that are electrically disconnected from one another, thereby producing a conductive transparent substrate with excellent transmittance in a process of high yield.
    Type: Application
    Filed: July 7, 2014
    Publication date: June 30, 2016
    Inventors: Kwang-Choon Chung, Ji Hoon Yoo, Joonki Seong, Byung Hun Kim, Nam Boo Cho, Myung-Bong Yoo
  • Publication number: 20160181592
    Abstract: Provided herein is a method for forming a transparent electrode film, the method comprising forming an electrode pattern by printing an electrode pattern on a release film using a metal ink composition; forming an insulating layer by applying a curable resin on the release film on which the electrode pattern has been formed; forming a substrate layer by laminating a substrate on the insulating layer; removing the release film; and forming a conductive layer by applying a conductive material on the electrode pattern from which the release film has been removed.
    Type: Application
    Filed: May 16, 2014
    Publication date: June 23, 2016
    Inventors: Kwang-Choon Chung, In-Sook Yi, Ji Hoon Yoo, Joonki Seong, Dae Sang Han