Patents by Inventor Sang-Hun Choi

Sang-Hun 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: 20200407506
    Abstract: Embodiments relate to a polyamide-imide film that maintains its mechanical properties at least at a certain level under the conditions of high temperatures and low temperatures and is excellent in transparency and folding characteristics, a process for preparing the same, and a cover window comprising the same. The polyamide-imide film comprises a polyamide-imide polymer and has an MOR value defined in Equation 1a of 75% or more.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Han Jun KIM, Sunhwan KIM, Dae Seong OH, Jin Woo LEE, Sang Hun CHOI, Jung Hee KI, Dong Jin LIM
  • Publication number: 20200407557
    Abstract: Embodiments relate to a polymer film. The polymer film comprises a polymer resin selected from the group consisting of a polyamide-based resin and a polyimide-based resin and has a haze (HZ0) before autoclave treatment of 3% or less and a ?HZ24 represented by Equation 1a of 500% or less.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Jung Hee KI, Sunhwan KIM, Sang Hun CHOI, Dae Seong OH, Han Jun KIM, Jin Woo LEE, Dong Jin LIM
  • Publication number: 20200407522
    Abstract: Embodiments relate to a polyamide-based film that is colorless and transparent, is excellent in mechanical properties and optical properties, has a wide angle of view by securing at least a certain level of luminance at various angles, and, in particular, has gloss characteristics similar to those of glass, a process for preparing the same, and a cover window comprising the same. The polyamide-based film comprises a polyamide-based polymer, wherein when the polyamide-based film is placed on a surface light source, light is irradiated from the surface light source, and the luminance value (L0) measured in the normal direction of the surface light source is 100%, the luminance value (L50) measured in the direction of 50° from the normal direction of the surface light source is 25% or more.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Sang Hun Choi, Jin Woo Lee, Dae Seong Oh, Jung Hee Ki, Sunhwan Kim, Han Jun Kim, Heung Sik Kim
  • Publication number: 20200407519
    Abstract: The polymer film according to an embodiment comprises at least one polymer resin selected from the group consisting of a polyamide-based resin, a polyimide-based resin, and a polyamide-imide-based resin, and has a haze of 0.6% or less and an in-plane retardation within a specific range for each wavelength band in the visible light region. The polymer film, which has an in-plane retardation within a specific range for each wavelength band in the visible light region, is excellent in transparency and optical properties, and it can remarkably reduce the rainbow phenomenon and improve the reflection appearance.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Jung Hee KI, Sunhwan KIM, Dae Seong OH, Jin Woo LEE, Sang Hun CHOI, Han Jun KIM, Heung Sik KIM
  • Publication number: 20200407556
    Abstract: Embodiments relate to a polymer film that is excellent in folding characteristics and transparency and maintains excellent mechanical properties even after repeated elongation and shrinkage in the elastic region, a process for preparing the same, and a front panel and a display device comprising the same. The polymer film comprises a polymer resin selected from the group consisting of a polyamide-based resin and a polyimide-based resin and has an MOR0/9 of Equation A of 2% or less.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Jung Hee KI, Sunhwan KIM, Han Jun KIM, Dae Seong OH, Jin Woo LEE, Sang Hun CHOI, Gun Uk KIM
  • Publication number: 20200407507
    Abstract: Embodiments relate to a polymer film for a display that maintains a clean appearance and transparency and is excellent in antiblocking properties by securing a certain range of optical slip index (OS), a process for preparing the same, and a front panel and a display device comprising the same. The polymer film comprises a polymer resin selected from the group consisting of a polyamide-based resin and a polyimide-based resin and a filler and has an optical slip index (0.5) of less than 0.5.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Dae Seong OH, Sunhwan KIM, Han Jun KIM, Jin Woo LEE, Sang Hun CHOI, Jung Hee KI
  • Publication number: 20200409413
    Abstract: Embodiments relate to a base film that is colorless, transparent, and excellent in mechanical properties and optical properties, particularly with low moisture permeability, a process for preparing the same, and a cover window and a display device comprising the same. The cover window comprises a base film comprising a polyamide-based polymer and having a moisture permeability of 300 g/m2·day or less; and a functional layer.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Sunhwan KIM, Jung Hee KI, Han Jun KIM, Dae Seong OH, Jin Woo LEE, Sang Hun CHOI
  • Publication number: 20200407521
    Abstract: Embodiments relate to a polyamide-imide film that has a clean appearance and transparency and is excellent in antiblocking properties, a process for preparing the same, and a display front panel and a display device comprising the same. The polyamide-imide film comprises a polyamide-imide polymer formed by polymerizing a diamine compound, a dianhydride compound, and a dicarbonyl compound; and a filler, wherein the dicarbonyl compound comprises a first dicarbonyl compound and a second dicarbonyl compound, the first dicarbonyl compound and the second dicarbonyl compound are structural isomers to each other, and the FH value of Equation 1 is 0.5 or less.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Dae Seong OH, Jung Hee KI, Sunhwan KIM, Han Jun KIM, Jin Woo LEE, Sang Hun CHOI
  • Patent number: 10479912
    Abstract: The embodiment examples of the present invention relate to a double-sided adhesive sheet and a display device for a touch panel including the same. The double-sided adhesive sheet, according to the embodiment examples of the present invention, comprises a transparent acryl-based resin layer as a substrate, can provide a double-sided adhesive sheet which can be detached and recycled after attaching to the touch panel and a display device module, by means of the adhesive agent layers that are formed on both sides having different detaching force, can improve visibility of the display device by being coupled between the touch panel and the display device module for eliminating an air gap, and can minimize the difference in the bending rate of each layer of the double-sided adhesive sheet for eliminating visibility exhaustion as much as possible.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 19, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jang-Soon Kim, James Jung, Sang-Hun Choi, Young-Myung Gee, Hyung-Min Cha, No-Woong Park, Se-Hee Park, Hyun-Ju Cho
  • Publication number: 20180144103
    Abstract: The present disclosure relates to a method and an apparatus for predicting an outbreak of disease. An exemplary embodiment of the present disclosure provides a disease outbreak predicting method including: receiving original data including a plurality of fields from at least one external database; generating processing data, wherein each of processing data represents one medical treatment or one health examination as one event in accordance with a predetermined criteria based on the original data; inputting the processing data into a disease outbreak predicting model; and calculating a disease outbreak probability for at least one disease using the disease outbreak predicting model. The present disclosure provides a disease outbreak predicting method and a disease outbreak predicting apparatus which represent various types of health related data as one event to input various data to a disease outbreak predicting model.
    Type: Application
    Filed: January 11, 2017
    Publication date: May 24, 2018
    Inventors: Myung Hun Chae, Sang Hun Choi, Seo Jin Park, Kwan Hong Lee
  • Patent number: 9297849
    Abstract: A wafer test system includes an input device configured to transmit a test signal, a wafer including an optical port, an input port configured to receive the test signal, and an output port configured to output a result signal based on the test signal, a measuring device configured to measure the result signal, and an alignment device configured to align an optical fiber port of an optical probe with an alignment port based on the result signal and then align the optical fiber port with the optical port. The alignment port is the input port or the output port. The optical probe is configured to be the input device when the input port is the alignment port and the optical probe is configured to be the measuring device when the output port is the alignment port.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: March 29, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Jae Shin, Yoon Dong Park, Sang Hun Choi, Kyoung Ho Ha
  • Publication number: 20140203830
    Abstract: A wafer test system includes an input device configured to transmit a test signal, a wafer including an optical port, an input port configured to receive the test signal, and an output port configured to output a result signal based on the test signal, a measuring device configured to measure the result signal, and an alignment device configured to align an optical fiber port of an optical probe with an alignment port based on the result signal and then align the optical fiber port with the optical port. The alignment port is the input port or the output port. The optical probe is configured to be the input device when the input port is the alignment port and the optical probe is configured to be the measuring device when the output port is the alignment port.
    Type: Application
    Filed: January 21, 2014
    Publication date: July 24, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: DONG JAE SHIN, Yoon Dong Park, Sang Hun Choi, Kyoung Ho Ha
  • Publication number: 20140176046
    Abstract: A terminal includes a first battery to supply power to the terminal if a power level of the first battery is above a first reference threshold, a second battery to supply power to the terminal if the power level of the first battery is below the first reference threshold, and a switch to connect at least one of the first battery and the second battery to power the terminal based on the power level of the first battery, in which the first battery is detachable from the terminal.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 26, 2014
    Applicant: PANTECH CO., LTD.
    Inventors: Won Seok PARK, Sang Hun Choi
  • Publication number: 20140139900
    Abstract: A wavelength tunable optical transmitter includes a first waveguide receiving incident light through an input port and outputting the incident light to a first output port, a resonant modulator adjacent to the first waveguide and whose resonant wavelength is variable, and a second waveguide disposed optically in parallel to the first waveguide and outputting emitted light to a second output port. The resonant modulator includes a silicon resonator constituted by a crystallized silicon film in the form of a closed loop between the first and second waveguides, a first electrode within the silicon resonator and constituted by a silicon film of a first conductivity type, and a second electrode extending alongside part of the outer circumferential surface of the silicon resonator and constituted by a silicon film of a second conductivity type.
    Type: Application
    Filed: August 21, 2013
    Publication date: May 22, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Jae SHIN, Jin-Kwon BOK, Beom-Suk LEE, Kwan-Sik CHO, Ho-Chul JI, Sang-Hun CHOI, Kyoung-Ho HA
  • Publication number: 20130241862
    Abstract: The embodiment examples of the present invention relate to a double-sided adhesive sheet and a display device for a touch panel including the same. The double-sided adhesive sheet, according to the embodiment examples of the present invention, comprises a transparent acryl-based resin layer as a substrate, can provide a double-sided adhesive sheet which can be detached and recycled after attaching to the touch panel and a display device module, by means of the adhesive agent layers that are formed on both sides having different detaching force, can improve visibility of the display device by being coupled between the touch panel and the display device module for eliminating an air gap, and can minimize the difference in the bending rate of each layer of the double-sided adhesive sheet for eliminating visibility exhaustion as much as possible.
    Type: Application
    Filed: November 11, 2011
    Publication date: September 19, 2013
    Applicant: LG HAUSYS, LTD.
    Inventors: Jang-Soon Kim, James Jung, Sang-Hun Choi, Young-Myung Gee, Hyung-Min Cha, No-Woong Park, Se-Hee Park, Hyun-Ju Cho
  • Patent number: 7638189
    Abstract: There are disclosed an artificial marble containing pellet-shaped transparent chips, obtained by coating the outer surface of an internal transparent resin layer with a resin layer containing a filler having a high specific gravity using co-extrusion, and a process for preparing the same. The artificial marble using the transparent chips as coloring chips, thus not causing the occurrence of layer separation of the transparent chips, which conventionally occurred in an artificial marble using transparent chips made of a single component, being distinguished from a conventional artificial marble made of combination of the single-colored chips, and expressing a pattern similar to a natural granite.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: December 29, 2009
    Assignee: LG Chem, Ltd.
    Inventor: Sang-Hun Choi
  • Patent number: 7421530
    Abstract: A bus structure of a mobile communication terminal for reducing digital noise is disclosed. The bus structure comprises a bus switch controller, a first element having a first bus, a second element having a second bus, and a common bus for connecting the first bus and the second bus. A bus switch positioned between the first element and the second element for disconnecting at least one of the first bus and the second bus from the common bus in response to a control signal from the bus switch controller for reducing digital noise of the common bus.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: September 2, 2008
    Assignee: LG Electronics Inc.
    Inventor: Sang-Hun Choi
  • Publication number: 20070049658
    Abstract: There are disclosed an artificial marble containing pellet-shaped transparent chips, obtained by coating the outer surface of an internal transparent resin layer with a resin layer containing a filler having a high specific gravity using co-extrusion, and a process for preparing the same. The artificial marble using the transparent chips as coloring chips, thus not causing the occurrence of layer separation of the transparent chips, which conventionally occurred in an artificial marble using transparent chips made of a single component, being distinguished from a conventional artificial marble made of combination of the single-colored chips, and expressing a pattern similar to a natural granite.
    Type: Application
    Filed: March 15, 2006
    Publication date: March 1, 2007
    Inventor: Sang-Hun Choi
  • Publication number: 20050144350
    Abstract: A bus structure of a mobile communication terminal for reducing digital noise is disclosed. The bus structure comprises a bus switch controller, a first element having a first bus, a second element having a second bus, and a common bus for connecting the first bus and the second bus. A bus switch positioned between the first element and the second element for disconnecting at least one of the first bus and the second bus from the common bus in response to a control signal from the bus switch controller for reducing digital noise of the common bus.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 30, 2005
    Inventor: Sang-Hun Choi