Patents by Inventor Hyeon Ho CHOI

Hyeon Ho 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).

  • Patent number: 9194980
    Abstract: Disclosed are a polarizing film including a polyolefin and a dichroic dye having a solubility parameter difference between the polyolefin and the dichroic dye is less than 7.4, and a display device including the polarizing film.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: November 24, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Joo Lee, Deuk Kyu Moon, Sang Ho Park, Jong Hoon Won, Hyeon Ho Choi, Myung Man Kim, Young Hwan Kim, Feifei Fang, Myung Sup Jung
  • Patent number: 9188786
    Abstract: An optical compensation film includes: a first layer having positive birefringence; a second layer on the first layer and having negative birefringence; and a third layer on the second layer and having positive birefringence. A retardation value of the optical compensation film for incident light having a wavelength of about 550 nm is about 135 nm to about 145 nm, and a ratio of a thickness of the first layer or of the third layer to a thickness of the second layer is about 1.1 to 2.2.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: November 17, 2015
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CHEIL INDUSTRIES INC.
    Inventors: Moon Yeon Lee, Hee Kyung Kim, Kyu Yeol In, Jae Hyun Kim, Hyung Jun Kim, Won Cheol Jung, Hyeon Ho Choi, Woo Joong Kim, Kyoung Ah Oh
  • Publication number: 20140254012
    Abstract: A polarization film, including: a hydrophobic polymer resin and a dichroic dye represented by Chemical Formula 1: wherein in Chemical Formula 1, wherein, in Chemical Formula 1, Ar1 is a substituted or unsubstituted C6 to C15 arylene group, Ar2 is a C6 to C15 arylene group substituted with at least one of a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a halogen atom and a halogen-containing group, Ar3 is a C6 to C15 arylene group substituted with an amide group, R1 is a substituted or unsubstituted C1 to C20 alkyl group or a substituted or unsubstituted C1 to C20 alkoxy group, R2 and R3 are each independently a substituted or unsubstituted C1 to C20 alkyl group, or R2 and R3 are linked to each other to form a ring, and n is 1 or 2.
    Type: Application
    Filed: November 26, 2013
    Publication date: September 11, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Deuk Kyu MOON, Sang Ho PARK, Yong Joo LEE, Jong Hoon WON, Hyeon Ho CHOI, Myung Man KIM, Young Hwan KIM, Feifei FANG, Myung Sup JUNG
  • Publication number: 20140225083
    Abstract: A compound for an organic optoelectronic device represented by Chemical Formula 1 wherein groups R1-R4, Ar1, Ar2, L1, L2, X, n1, and n2 are described in the specification.
    Type: Application
    Filed: October 15, 2013
    Publication date: August 14, 2014
    Applicants: Cheil Industries Inc., Samsung Electronics Co., Ltd.
    Inventors: Sang Mo KIM, Jhun Mo SON, Ho Suk KANG, Yong Sik JUNG, Hyeon Ho CHOI, Kyu Young HWANG
  • Publication number: 20140203257
    Abstract: A compound for an organic optoelectronic device represented by Chemical Formula 1: wherein groups X1 to X8, Y1, Y2, L1, L2, Ar1, Ar2, and variables m1, m2, n1, and n2 are described in the specification.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 24, 2014
    Applicants: CHEIL INDUSTRIES INC., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyu Young HWANG, O Hyun KWON, Young Kwon KIM, Hyeon Ho CHOI, Byoung Ki CHOI
  • Publication number: 20140158999
    Abstract: Disclosed are a compound for an organic optoelectronic device, an organic light emitting diode including the same, and a display device including the organic light emitting diode. A compound for an organic optoelectronic device represented by Chemical Formula 1 provides an organic optoelectronic device having an excellent life-span and improved luminous efficiency at a low driving voltage due to excellent electrochemical and thermal stability.
    Type: Application
    Filed: July 11, 2013
    Publication date: June 12, 2014
    Inventors: Yong Sik JUNG, Ho Suk KANG, Hyeon Ho CHOI, Sang Mo KIM, Jhun Mo SON, Kyu Young HWANG
  • Publication number: 20140158998
    Abstract: An organometallic complex represented by Chemical Formula 1: wherein M, CyN, CyC, X1, X2, R1 to R4, R? and n are described in the specification.
    Type: Application
    Filed: June 19, 2013
    Publication date: June 12, 2014
    Inventors: Chang Ho NOH, O Hyun KWON, Ragini Das RUPASREE, Dmitry KRAVCHUK, Hyeon Ho CHOI
  • Publication number: 20140131643
    Abstract: Disclosed are a polarizing film including a polyolefin and a dichroic dye having a solubility parameter difference between the polyolefin and the dichroic dye is less than 7.4, and a display device including the polarizing film.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 15, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Joo LEE, Deuk Kyu MOON, Sang Ho PARK, Jong Hoon WON, Hyeon Ho CHOI, Myung Man KIM, Young Hwan KIM, Feifei FANG, Myung Sup JUNG
  • Publication number: 20140124714
    Abstract: Disclosed are a polarizing film including a polyolefin and a dichroic dye having a solubility parameter difference between the polyolefin and the dichroic dye is less than 7.4, and a display device including the polarizing film.
    Type: Application
    Filed: May 8, 2013
    Publication date: May 8, 2014
    Inventors: Yong Joo LEE, Deuk Kyu MOON, Sang Ho PARK,, Jong Hoon WON, Hyeon Ho CHOI, Myung Man KIM, Young Hwan KIM, Feifei FANG, Myung Sup JUNG
  • Publication number: 20140124760
    Abstract: Disclosed are an organometallic complex, and an organic electroluminescence device and a display device including the same. The organometallic complex is represented by the following Chemical Formula 1. The definition of the above Chemical Formula 1 is the same as described in the detailed description.
    Type: Application
    Filed: October 24, 2013
    Publication date: May 8, 2014
    Applicants: CHEIL INDUSTRIES INC., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Rupasree Ragini Das, Chang Ho NOH, DMITRY KRAVCHUK, O Hyun KWON, Hyeon Ho CHOI
  • Publication number: 20130240843
    Abstract: A polymer and an organic light-emitting device including the polymer represented by Formula 1 wherein at least one of a first dihedral angle between an A1 ring of an nth repeating unit and a first aromatic ring of an (n?1)th repeating unit and a second dihedral angle between an A2 ring of the nth repeating unit and a second aromatic ring of a (n+1)th repeating unit is equal to or greater than an angle of ?50% represented by Equation 1.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeon-ho CHOI, Jhun-mo SON, Ho-suk KANG, Hye-yeon YANG, Yong-sik JUNG
  • Publication number: 20130172501
    Abstract: A polymer for an optical film that includes a repeating unit A including a repeating unit represented by the following Chemical Formula 1; and a repeating unit B including a repeating unit represented by the following Chemical Formula 2, wherein R1 to R8, n1 and n2, are defined herein.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 4, 2013
    Applicants: CHEIL INDUSTRIES, INC., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won Cheol JUNG, Moon Yeon LEE, Kyu Yeol IN, Woo Joong KIM, Hyung Jun KIM, Hyeon Ho CHOI, Jong-Hoon WON, Myung Sup JUNG