Patents by Inventor Joo Ko

Joo Ko 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: 20150159258
    Abstract: The present invention relates to an oxygen sensor including a porous ceramic coating layer and a method of forming a porous ceramic coating layer. More particularly, the present invention relates to an oxygen sensor including a porous ceramic coating layer formed on the surface of a sensing part of the oxygen sensor by plasma-coating the sensing part with ceramic powder having a predetermined particle size, and a method of forming a porous ceramic coating layer.
    Type: Application
    Filed: October 31, 2013
    Publication date: June 11, 2015
    Applicant: Hyundai Kefico Corporation
    Inventors: Yun-Ki Chung, Jung-Taek Kim, Dae-Gun Lee, Yang-Joo Ko
  • Patent number: 9051328
    Abstract: Embodiments of the present invention are directed to heterocyclic compounds and organic light-emitting devices including the heterocyclic compounds. The organic light-emitting devices using the heterocyclic compounds have high-efficiency, low driving voltages, high luminance and long lifespans.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: June 9, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Kook Kim, Seok-Hwan Hwang, Yoon-Hyun Kwak, Hye-Jin Jung, Jong-Hyuk Lee, Jin-O Lim, Hee-Joo Ko
  • Patent number: 9048132
    Abstract: An LDMOS device includes a second conduction type buried layer, a first conduction type drain extension region configured to be formed on and/or over a region of the second conduction type buried layer, a second conduction type drain extension region configured to be formed in a partial region of the first conduction type drain extension region, a first conduction type body, a first guard ring configured to be formed around the second conduction type drain extension region and configured to include a second conduction type impurity layer, and a second guard ring configured to be formed around the first guard ring and configured to include a high-voltage second conduction type well and a second conduction type impurity layer. Further, the second conduction type impurity layer of the first guard ring and the second conduction type impurity layer of the second guard ring operate as an isolation.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 2, 2015
    Assignee: Dongbu Hitek Co., Ltd.
    Inventor: Choul Joo Ko
  • Patent number: 9006762
    Abstract: An organic light-emitting device including a substrate, an anode layer on the substrate, the anode layer including WOxNy (2.2?x?2.6 and 0.22?y?0.26), an emission structure layer on the anode layer, and a cathode layer on the emission structure layer.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Hee-Joo Ko, Il-Soo Oh, Hyung-Jun Song, Se-Jin Cho, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8969864
    Abstract: Disclosed is an organic light emitting diode device including an anode, a cathode, an emission layer between the anode and the cathode, and a buffer layer positioned between the emission layer and the anode. The buffer layer includes an oxide, fluoride, quinolate, or acetoacetate compound of an alkaline metal or an alkaline-earth metal, as well as a material having a work function of about 2.6 to about 4.5 eV. The buffer layer also has a thickness of about 30 ? to about 400 ?.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Soo Oh, Chang-Ho Lee, Hee-Joo Ko, Se-Jin Cho, Hyung-Jun Song, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song
  • Publication number: 20150008394
    Abstract: An organic light emitting diode (OLED) display includes a substrate, a thin film transistor formed on the substrate, a first electrode formed on the thin film transistor and electrically connected to the thin film transistor, a hole injection layer (HIL) formed on the first electrode, a hole transport layer (HTL) formed on the hole injection layer (HIL), an emission layer formed on the HTL, an electron transport layer (ETL) formed on the emission layer, a first buffer layer located on the ETL, and a second electrode formed on the first buffer layer.
    Type: Application
    Filed: December 5, 2013
    Publication date: January 8, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Il-Soo OH, Chang-Ho Lee, Ji-Hwan Yoon, Dae-Yup Shin, Hee-Joo Ko, Se-Jin Cho, Jin-Young Yun, Bora Lee, Yeon-Woo Lee, Beom-Joon Kim, Pyung-Eun Jeon, Hyun-Ju Choi, Joong-Won Sim, In-Jae Lee
  • Publication number: 20150008404
    Abstract: An organic light emitting diode (OLED) display includes a substrate, a thin film transistor disposed on the substrate, a first electrode disposed on the thin film transistor and electrically connected to the thin film transistor, a first auxiliary layer disposed on the first electrode, an emission layer disposed on the first auxiliary layer, an electron transport layer disposed on the emission layer, a first buffer layer disposed on the electron transport layer, and a second electrode disposed on the first buffer layer.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 8, 2015
    Inventors: Il Soo OH, Chang Ho LEE, Ji Hwan YOON, Dae Yup SHIN, Hee Joo KO, Se Jin CHO, Jin Young YUN, Bora LEE, Yeon-Woo LEE, Beom Joon KIM, Pyung Eun JEON, Hyun Ju CHOI, Joong Won SIM, In Jae LEE
  • Publication number: 20140374713
    Abstract: Provided is an organic light-emitting device including a first electrode, a second electrode disposed opposite to the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron-transporting layer disposed between the emission layer and the second electrode. The electron-transporting layer includes a first electron-transporting material and a second electron-transporting material. The lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL1) and the lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL2) satisfy the equation 0.1 eV?|EL1?EL2|?0.3 eV.
    Type: Application
    Filed: May 1, 2014
    Publication date: December 25, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Jin CHO, Chang-Ho LEE, Dae-Yup SHIN, Young-Mok SON, Il-Soo OH, Hee-Joo KO, Jin-Young YUN, Bo-Ra LEE, Yeon-Woo LEE, Beom-Joon KIM, Pyung-Eun JEON, Hyun-Ju CHOI, Chang-Min LEE
  • Publication number: 20140353604
    Abstract: Disclosed is an organic light emitting diode device including an anode, a cathode, an emission layer between the anode and the cathode, and a buffer layer positioned between the emission layer and the anode. The buffer layer includes an oxide, fluoride, quinolate, or acetoacetate compound of an alkaline metal or an alkaline-earth metal, as well as a material having a work function of about 2.6 to about 4.5 eV. The buffer layer also has a thickness of about 30 ? to about 400 ?.
    Type: Application
    Filed: October 11, 2013
    Publication date: December 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Il-Soo OH, Chang-Ho LEE, Hee-Joo KO, Se-Jin CHO, Hyung-Jun SONG, Jin-Young YUN, Bo-Ra LEE, Young-Woo SONG
  • Publication number: 20140353610
    Abstract: An organic light-emitting display device includes a substrate which includes a plurality of areas, a plurality of first electrodes disposed on the areas of the substrate, respectively, a second electrode disposed on the first electrodes, and a plurality of emitting layers disposed between the first electrodes and the second electrode. At least two of the emitting layers are disposed on all of the areas.
    Type: Application
    Filed: October 29, 2013
    Publication date: December 4, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: CHANG HO LEE, Jin Young Yun, Dae Yup Shin, Young Mok Son, Il Soo Oh, Hee Joo Ko, Se Jin Cho, Bo Ra Lee, Yeon Woo Lee, Pyung Eun Jeon, Hyun Ju Choi, Ji Hwan Yoon, Beom Joon Kim
  • Patent number: 8889270
    Abstract: A heterocyclic compound represented by Formula 1 below and an organic light-emitting device including the heterocyclic compound: wherein R1 and R2, and A and A? are defined as in the specification.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-O Lim, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Sang-Hyun Han, Yoon-Hyun Kwak, Sun-Young Lee, Chang-Ho Lee, Hee-Joo Ko, Jong-Hyuk Lee, Sung-Chul Kim
  • Publication number: 20140302627
    Abstract: In a method of manufacturing a quantum dot, a core may be formed using (utilizing) at least one cation precursor and at least one anion precursor. The core may be reacted with a shell forming precursor and a ligand forming precursor for more than one hour to form a shell enclosing the core and a ligand. A nanoparticle including the core, the shell and the ligand may be washed.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 9, 2014
    Applicants: INDUSTRY-ACADEMIA COOPERATION FOUNDATION, HONGIK UNIVERSITY, SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee-Joo Ko, Hee-Sun Yang, Ki-Heon Lee, Jeong-Hoon Lee, Chang-Ho Lee
  • Patent number: 8847210
    Abstract: An organic light emitting diode (OLED) display includes: a substrate; a first electrode on the substrate; a first emission layer on the first electrode; a second emission layer on the first emission layer; a second electrode on the second emission layer; and a light emitting assistance layer selectively positioned between the first emission layer and the second emission layer.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Joo Ko, Se-Jin Cho, Chang-Ho Lee, Il-Soo Oh, Hyung-Jun Song, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8802163
    Abstract: A natural soap is made using a herbal medicine decoction. The natural soap includes herbs including lotus roots, lotus leaves, red ginseng, Hippophae rhamnoides leaves and trunk, persimmon leaves, thuja orientalis, ginger, rosemary, black beans, black sesame, aloe, mulberry leaves, Orostachys japonicus, Angelica gigas, green tea, pine needles, mint, pleuropterus multiflorus, blueberry, and Acorus gramineus. A ripening device ripens the herbs in temperatures of 65 to 95° C. for 3 to 15 days, distilled water or soft water is poured onto the herbs, and the herbs mixed with the water are decocted by a decoction maker.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: August 12, 2014
    Inventor: Eun Joo Ko
  • Patent number: 8754474
    Abstract: A Lateral Double Diffused Metal-Oxide-Semiconductor (LDMOS) semiconductor device includes a substrate; a gate region, a source region, and a drain region on and/or over the substrate, a well region at one side of the drain region, and a guardring region disposed at one side of the well region and connected electrically to the well region.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: June 17, 2014
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Choul Joo Ko
  • Patent number: 8736546
    Abstract: A display device includes a display panel configured to display an image in an upward direction and a reflective panel on the display panel, the reflective panel configured to selectively transmit or reflect light with respect to an area corresponding to the image.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: May 27, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Soo Oh, Chang-Ho Lee, Hee-Joo Ko, Hyung-Jun Song, Se-Jin Cho, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8692327
    Abstract: An LDMOS device may include at least one of a second conduction type buried layer and a first conduction type drain extension region. An LDMOS device may include a second conduction type drain extension region configured to be formed in a portion of the first conduction type drain extension region. The second conduction type drain extension region may include a gate pattern and a drain region. An LDMOS device may include a first conduction type body having surface contact with the second conduction type drain extension region and may include a source region. An LDMOS device may include a first guard ring formed around the second conduction type drain extension region. An LDMOS device may include a second guard ring configured to be formed around the first guard ring and configured to be connected to a different region of the second conduction type buried layer.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: April 8, 2014
    Assignee: Dongbu HiTek Co., Ltd.
    Inventors: Choul Joo Ko, Cheol Ho Cho
  • Patent number: 8686420
    Abstract: An organic light emitting diode (OLED) display includes a substrate including a plurality of pixels defined thereon, a thin film transistor (TFT) positioned at each pixel, a negative electrode electrically connected to the TFT, an organic emission layer positioned on the negative electrode, and a positive electrode positioned on the organic emission layer, the positive electrode including an auxiliary layer positioned on the organic emission layer, a conductive layer positioned on the auxiliary layer, and an insulation layer positioned on the conductive layer.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: April 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Soo Oh, Chang-Ho Lee, Hee-Joo Ko, Se-Jin Cho, Hyung-Jun Song, Jin-Young Yun, Jong-Hyuk Lee
  • Patent number: 8659010
    Abstract: A photoluminescence diode which may decrease a driving voltage may include an anode, a cathode, an emission layer interposed between the anode and the cathode, and an electron accepting layer interposed between the emission layer and the cathode and including one material selected from fullerene, methanofullerene, doped fullerene, doped methanofullerene, a derivative thereof, and a mixture thereof.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: February 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyung-Jun Song, Chang-Ho Lee, Il-Soo Oh, Hee-Joo Ko, Se-Jin Cho, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Publication number: 20140014916
    Abstract: Embodiments of the present invention are directed to a compound represented by Formula 1, and to an organic light-emitting device including the compound.
    Type: Application
    Filed: February 13, 2013
    Publication date: January 16, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Hyun Han, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Jin-O Lim, Soo-Yon Kim, Eun-Jae Jeong, Jun-Ha Park, Eun-Young Lee, Hee-Joo Ko, Jong-Hyuk Lee