Patents by Inventor Byoung Ki Choi

Byoung Ki 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: 20150270510
    Abstract: A display device includes a first optical resonance layer on a substrate, a switching structure on the first optical resonance layer, a first electrode on the switching structure, a light emitting structure on the first electrode, and a second electrode on the emitting structure. The switching structure may include a switching device and an optical distance controlling insulation layer covering the switching device. A first optical resonance distance for an optical resonance of the light may be provided between an upper face of the first optical resonance layer and a bottom face of the second electrode.
    Type: Application
    Filed: June 5, 2015
    Publication date: September 24, 2015
    Inventors: Dong-Woo SHIN, Seung-Wook CHANG, Young-Hee LEE, Chun-Gi YOU, Pil-Soo AHN, Byoung-Ki CHOI
  • Publication number: 20150194610
    Abstract: A condensed cyclic compound represented by one of Formulae 1A to 1D: wherein in Formulae 1A to 1D, groups, substituents, and variables are as defined in the specification.
    Type: Application
    Filed: August 15, 2014
    Publication date: July 9, 2015
    Inventors: Kyu-young HWANG, O-hyun KWON, Byoung-ki CHOI
  • Patent number: 9054337
    Abstract: A display device includes a first optical resonance layer on a substrate, a switching structure on the first optical resonance layer, a first electrode on the switching structure, a light emitting structure on the first electrode, and a second electrode on the emitting structure. The switching structure may include a switching device and an optical distance controlling insulation layer covering the switching device. A first optical resonance distance for an optical resonance of the light may be provided between an upper face of the first optical resonance layer and a bottom face of the second electrode.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Woo Shin, Seung-Wook Chang, Young-Hee Lee, Chun-Gi You, Pil-Soo Ahn, Byoung-Ki Choi
  • Patent number: 9028978
    Abstract: A compound represented by Formula 1 below and an organic light-emitting device including an organic layer containing the compound of Formula 1: wherein R1 to R4, X and Y, a and b, and m and n are defined as in the specification.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong-Suk Kim, Dong-Woo Shin, Sung-Soo Bae, Ji-Hye Shim, Dae-Yup Shin, Byoung-Ki Choi
  • Publication number: 20150090968
    Abstract: A condensed cyclic compound represented by Formula 1: wherein in Formula 1, Groups X1 to X3, L11, L12, R11, and R12, and variables a11, a12, b11, b12, c11, and c12 are described in the specification.
    Type: Application
    Filed: June 2, 2014
    Publication date: April 2, 2015
    Applicants: Samsung Electronics Co., Ltd., CHEIL INDUSTRIES INC.
    Inventors: Chang-woo KIM, O-hyun KWON, Sang-dong KIM, Kyu-young HWANG, Byoung-ki CHOI
  • Publication number: 20150060791
    Abstract: A condensed-cyclic compound of Formula 1: wherein, in Formula 1, groups X1, X11 to X14, L21, L22, R21, and R21, and variables a21, a22, b21, b22, c21, and c22 are described in the specification.
    Type: Application
    Filed: June 10, 2014
    Publication date: March 5, 2015
    Inventors: Chang-ju SHIN, Young-kwon KIM, Hyung-sun KIM, Moo-jin PARK, Joo-hee SEO, Eun-sun YU, Byoung-ki CHOI, Kyu-young HWANG
  • Publication number: 20150051911
    Abstract: Disclosed is a method for dividing pronunciation units which includes the steps of: extracting voice-intensity maxima and minima in voice waveforms of letter sequences; forming a group by grouping the extracted maxima together; dividing the letter sequences into pronunciation units around the points nearest to either side of the group from among minima on both sides of the group, voice start points, and voice end points.
    Type: Application
    Filed: April 3, 2013
    Publication date: February 19, 2015
    Inventor: Byoung Ki CHOI
  • Publication number: 20140291646
    Abstract: A pyrene-based compound and an organic light-emitting diode including the same, the pyrene-based compound being represented by Formula 1, below:
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dong-Woo SHIN, O-Hyun KWON, Mie-Hwa PARK, Seul-Ong KIM, Byoung-Ki CHOI
  • 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
  • Patent number: 8703301
    Abstract: Provided are an organic light emitting device including a substrate; a first electrode; a second electrode; and an organic layer interposed between the first electrode and the second electrode, wherein the organic layer includes a first layer including an organic-metal complex represented by Formula 1 below, and a method of preparing the same: wherein Formula 1 is described in the description of the invention.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: O-hyun Kwon, Sang-hoon Park, Byoung-ki Choi, Dong-woo Shin
  • Patent number: 8686406
    Abstract: A pyrene-based compound, an organic light-emitting diode including the compound and an organic light-emitting apparatus including the compound are disclosed.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: April 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Woo Shin, O-Hyun Kwon, Kyul Han, Seul-Ong Kim, Byoung-Ki Choi
  • Publication number: 20130234118
    Abstract: Embodiments of the present invention include an amine-based compound represented by Formula 1, an organic light-emitting diode including the amine-based compound, and an organic light-emitting apparatus including the amine-based compound.
    Type: Application
    Filed: December 5, 2012
    Publication date: September 12, 2013
    Applicant: SAMSUNG DISPLAY CO. LTD.
    Inventors: O-Hyun Kwon, Dong-Woo Shin, Kyul Han, Seul-Ong Kim, Byoung-Ki Choi
  • Publication number: 20130228752
    Abstract: A pyrene-based compound, an organic light-emitting diode including the compound and an organic light-emitting apparatus including the compound are disclosed.
    Type: Application
    Filed: June 29, 2012
    Publication date: September 5, 2013
    Inventors: Dong-Woo Shin, O-Hyun Kwon, Kyul Han, Seul-Ong Kim, Byoung-Ki Choi
  • Publication number: 20130174782
    Abstract: A low temperature deposition device according to the present invention includes: a thermal deposition source unit spraying a deposition beam; a differential pumping unit connected to the thermal deposition source unit and passing the deposition beam; and a cooling gas inlet connected to the differential pumping unit and inserting a cooling gas inside the differential pumping unit to cool the deposition beam. According to the present invention, the inorganic deposition beam of low temperature is deposited on the substrate to form the inorganic metal layer of low temperature so that the damage to the organic layer maybe minimized when forming the inorganic metal layer of low temperature on the organic layer.
    Type: Application
    Filed: September 4, 2012
    Publication date: July 11, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyul Han, O-Hyun Kwon, Dong-Woo Shin, Seul-Ong Kim, Byoung-Ki Choi
  • Patent number: 8481174
    Abstract: Provided are an organic light-emitting compound that is a diarylethene derivative represented by Formula 1, and an organic electroluminescent (EL) device using the organic light-emitting compound, and a method of manufacturing the organic EL device: where R1, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, k, l, m, and n are the same as defined in the specification. The organic light-emitting compound contains a cis-diarylethene group linked with an aliphatic ring, and thus crystallization of the organic light-emitting compound is unlikely to occur and the compound is highly soluble to organic solvents and easily provides liquid formulation with organic solvents. Thus, the organic light-emitting compound can easily be used in organic EL devices. An organic EL device manufactured using the compound can have a thermostable layer and thus has improved light-emitting properties in term of superior turn-on voltage, efficiency, color purity, etc.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Woo Shin, Woon-Jung Paek, Byoung-Ki Choi, O-Hyun Kwon, Myeong-Suk Kim, Young-Mok Son, Eun-Sil Han, Jung-Bae Song
  • Patent number: 8362683
    Abstract: An organic light emitting display apparatus includes a plurality of sub-pixels, each of the sub-pixels having a first electrode, a second electrode facing the first electrode, and an intermediate layer disposed between the first and second electrodes, the intermediate layer having a plurality of layers including an organic emission layer, at least one layer of the plurality of layers in the intermediate layer being commonly shared by two sub-pixels arranged in a first direction and by at least two sub-pixels arranged in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: January 29, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Shinichiro Tamura, Hyo-Seok Kim, Byoung-Ki Choi
  • Publication number: 20120326133
    Abstract: A compound represented by Formula 1 below and an organic light-emitting device including an organic layer containing the compound of Formula 1: wherein R1 to R4, X and Y, a and b, and m and n are defined as in the specification.
    Type: Application
    Filed: December 2, 2011
    Publication date: December 27, 2012
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Myeong-Suk Kim, Dong-Woo Shin, Sung-Soo Bae, Ji-Hye Shim, Dae-Yup Shin, Byoung-Ki Choi
  • Publication number: 20120298968
    Abstract: Provided is an organic light-emitting device including a plurality of pixels, each including a first sub-pixel, a second sub-pixel, and a third sub-pixel having different colors from each other. Each of the pixels includes a substrate, a first electrode layer on the substrate, a first light-emitting layer disposed on the first electrode in the first, second and third sub-pixels, an auxiliary layer disposed on the first light-emitting layer in the second and third sub-pixels, a second light-emitting layer disposed on the auxiliary layer in the second sub-pixel, a third light-emitting layer disposed on the auxiliary layer in the third sub-pixel, and a second electrode layer on the first, second, and third light-emitting layers.
    Type: Application
    Filed: December 1, 2011
    Publication date: November 29, 2012
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Myeong-Suk KIM, Won-Jun Song, Byoung-Ki Choi
  • Patent number: 8257839
    Abstract: Provided are a polyvinyl pyrrole host material emitting highly efficient phosphorescence, a luminescent layer using the material, and an organic electroluminescent display device. The polyvinyl pyrrole host material shows highly efficient luminescence having improved energy transfer, and thus is useful for an organic electroluminescent display device and other various light emitting devices.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: September 4, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jong-Jin Park, Byoung-Ki Choi, Tae-Yong Noh, O-Hyun Kwon, Myeong-Suk Kim, Yu-Jin Kim, Sang-Heon Hyun, Boris Aleksandrovich Trofimov
  • Patent number: 8227093
    Abstract: Provided is a cyclometalated transition metal complex represented by Formula 1, Formula 2 or Formula 3: By including a new ancillary ligand, the cyclometalated transition metal complex can efficiently emit red light using a phosphor by intersystem crossing (ISC) of excitons to triplet states and then metal to ligand charge transfer (MLCT). An organic light emitting device prepared using the transition metal compound shows high luminous efficiency and high external quantum efficiency.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: July 24, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Hun Byun, Hee-Kyung Kim, Lyong-Sun Pu, Shinichiro Tamura, Das Rupasree Ragini, Jong-Jin Park, Byoung-Ki Choi, Yi-Yeol Lyu, O-Hyun Kwon, Young-Mok Son