Patents by Inventor Yong-Tak Kim

Yong-Tak Kim 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: 8022616
    Abstract: An organic light emitting display apparatus that has high (or improved) contrast and/or impact resistance. The organic light emitting display apparatus includes: a substrate; an organic light emitting device on the substrate to display an image; a sealing member on the organic light emitting device; a semitransparent film on a surface of the sealing member facing away from the organic light emitting device to transmit a portion of external light and to reflect another portion of the external light; a passivation film on the semitransparent film to protect the semitransparent film; and a transmissive black layer between the sealing member and the organic light emitting device to increase contrast, wherein the semitransparent film has a refractive index greater than that of the passivation film.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: September 20, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Byoung-Duk Lee, Jong-Hyuk Lee, Yoon-Hyeung Cho, Min-Ho Oh, So-Young Lee, Sun-Young Lee, Won-Jong Kim, Yong-Tak Kim, Jin-Baek Choi
  • Patent number: 7985113
    Abstract: A wideband retardation layer (or film) that can perform circular polarizing so that the retardation layer can be formed with an organic light-emitting device to be relatively thin and have a relatively high contrast with no reduction in brightness, and an organic light-emitting device including the retardation layer. The retardation film includes a base and a retardation layer including an alkali oxide layer grown to be inclined on a surface of the base, wherein the alkali oxide layer is disposed by slant-angle depositing alkali oxide on the surface of the base.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: July 26, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jin-Baek Choi, Won-Jong Kim, Yong-Tak Kim, Jong-Hyuk Lee, Young-Woo Song, Yoon-Hyeung Cho, Byoung-Duk Lee, Sun-Young Lee, Min-Ho Oh, So-Young Lee
  • Publication number: 20110133633
    Abstract: An organic light emitting diode device including a first electrode; a second electrode facing the first electrode; and an emitting layer interposed between the first electrode and the second electrode, wherein the first electrode includes an ytterbium (Yb) alloy represented by the following Chemical Formula 1: Yb-M??(1), and in Chemical Formula 1, M is a metal including at least one of silver (Ag), calcium (Ca), chromium (Cr), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), molybdenum (Mo), ruthenium (Ru), indium (In), and tungsten (W).
    Type: Application
    Filed: December 6, 2010
    Publication date: June 9, 2011
    Inventors: Seok-Gyu Yoon, Young-Woo Song, Kyu-Hwan Hwang, Jae-Heung Ha, Jong-Hyuk Lee, Won-Jong Kim, Yong-Tak Kim, Chang-Ho Lee, Il-Soo Oh, Hyung-Jun Song, Hee-Joo Ko
  • Publication number: 20110121270
    Abstract: An organic light emitting device including a substrate on which an organic light emitting unit is formed, wherein the organic light emitting unit sequentially includes a first electrode, an organic layer, and a second electrode; and a passivation layer covering the substrate and the second electrode, and a method of manufacturing the organic light emitting device.
    Type: Application
    Filed: June 14, 2010
    Publication date: May 26, 2011
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Yong-Tak KIM, Jong-Hyuk LEE, Won-Jong KIM, Joon-Gu LEE, Jin-Baek CHOI
  • Publication number: 20110121351
    Abstract: An organic light emitting diode (OLED) device and a method of manufacturing the same, the OLED device including a substrate, a first electrode on the substrate, a buffer layer on the first electrode, an emission layer on the buffer layer, and a second electrode on the emission layer, wherein the buffer layer includes a transparent conductive oxide, and a metal or metal oxide having a work function lower than a work function of the transparent conductive oxide.
    Type: Application
    Filed: October 19, 2010
    Publication date: May 26, 2011
    Inventors: Joon-Gu Lee, Jong-Hyuk Lee, Won-Jong Kim, Ji-Young Choung, Kyu-Ilwan Kwang, Yong-Tak Kim, Jin-Baek Choi
  • Patent number: 7934967
    Abstract: A method of manufacturing an organic light-emitting device, the method including: forming an anode; forming an intermediate layer comprising an emission layer on the anode; and forming a cathode on the intermediate layer, wherein the forming of the cathode comprises thermally depositing indium or indium oxide, with at least one of a metal or a metal oxide in plasma generated in a chamber to form a transparent conductive layer of indium oxide doped with the at least one of the metal or the metal oxide.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: May 3, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yong-Tak Kim, Won-Jong Kim, Jin-Baek Choi, Jong-Hyuk Lee, Yoon-Hyeung Cho, Byoung-Duk Lee, Min-Ho Oh, So-Young Lee, Sun-Young Lee
  • Patent number: 7923923
    Abstract: An organic light emitting display device including: a substrate; a sealing member; an organic light emitting device between the substrate and the sealing member and for displaying images; a selective light absorbing layer on a surface of the sealing member facing the organic light emitting device and including pigments for selectively absorbing light; and a black matrix layer on the selective light absorbing layer corresponding to non-emission areas of the organic light emitting device.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: April 12, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yoon-Hyeung Cho, Jong-Hyuk Lee, Min-Ho Oh, Byoung-Duk Lee, So-Young Lee, Sun-Young Lee, Won-Jong Kim, Yong-Tak Kim, Jin-Baek Choi
  • Patent number: 7868527
    Abstract: A polarizer adapted to improve contrast and visibility of a display device, a method of manufacturing the polarizer, and a flat panel display device including the polarizer. In one embodiment, the polarizer includes a base and a plurality of grids disposed in a stripe pattern on the base. Here, the grids are separated from each other and formed of metal-containing graphite.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: January 11, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Won-Jong Kim, Yong-Tak Kim, Jin-Baek Choi, Jong-Hyuk Lee, Jae-Heung Ha, Yoon-Hyeung Cho, Byoung-Duk Lee, Sun-Young Lee, So-Young Lee, Min-Ho Oh
  • Publication number: 20100301741
    Abstract: Provided is an organic light emitting device including an anode, a cathode, and a light emitting layer disposed between the anode and the cathode, wherein the cathode has a structure including a first metal layer and a second metal layer, or a structure including a first metal layer, a second metal layer, and one selected from the group consisting of an oxide layer, a nitride layer, and a nitric oxide layer, and wherein the cathode has low resistance.
    Type: Application
    Filed: April 8, 2010
    Publication date: December 2, 2010
    Applicant: Samsung Mobile Display Co., LTD.
    Inventors: Yong-Tak KIM, Won-Jong Kim, Joon-Gu Lee, Jin-Baek Choi, Chang-Ho Lee, Il-Soo Oh, Hee-Ju Ko, Se-Jin Cho, Jin-Young Yun, Hyung-Jun Song, Kyu-Hwan Hwang, Jong-Hyuk Lee
  • Patent number: 7838327
    Abstract: An organic light-emitting device including a transparent conducting oxide layer as a cathode and a method of manufacturing the organic light-emitting device. The organic light-emitting device includes an anode disposed on a substrate. An organic functional layer including at least an organic light-emitting layer is disposed on the anode. The transparent conducting oxide layer used as the cathode is disposed on the organic functional layer. The transparent conducting oxide layer cathode is formed by plasma-assisted thermal evaporation. A microcavity structure is not formed in the organic light-emitting device, thereby avoiding a luminance change and a color shift as a function of viewing angle.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: November 23, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Chang-Ho Lee, Jin-Baek Choi, Won-Jong Kim, Jong-Hyuk Lee, Young-Woo Song, Yong-Tak Kim, Yoon-Hyeung Cho, Byoung-Duk Lee, Min-Ho Oh, Sun-Young Lee, So-Young Lee
  • Patent number: 7812525
    Abstract: A wideband retardation layer (or film) that can perform circular polarizing so that the retardation layer can be formed with an organic light-emitting device to be relatively thin and have a relatively high contrast with no reduction in brightness, and an organic light-emitting device including the retardation layer. The retardation film includes a base and a retardation layer including an alkali oxide layer grown to be inclined on a surface of the base, wherein the alkali oxide layer is disposed by slant-angle depositing alkali oxide on the surface of the base.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: October 12, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jin-Baek Choi, Won-Jong Kim, Yong-Tak Kim, Jong-Hyuk Lee, Young-Woo Song, Yoon-Hyeung Cho, Byoung-Duk Lee, Sun-Young Lee, Min-Ho Oh, So-Young Lee
  • Publication number: 20100238547
    Abstract: A wideband retardation layer (or film) that can perform circular polarizing so that the retardation layer can be formed with an organic light-emitting device to be relatively thin and have a relatively high contrast with no reduction in brightness, and an organic light-emitting device including the retardation layer. The retardation film includes a base and a retardation layer including an alkali oxide layer grown to be inclined on a surface of the base, wherein the alkali oxide layer is disposed by slant-angle depositing alkali oxide on the surface of the base.
    Type: Application
    Filed: June 3, 2010
    Publication date: September 23, 2010
    Inventors: Jin-Baek Choi, Won-Jong Kim, Yong-Tak Kim, Jong-Hyuk Lee, Young-Woo Song, Yoon-Hyeung Cho, Byoung-Duk Lee, Sun-Young Lee, Min-Ho Oh, So-Young Lee
  • Publication number: 20100207149
    Abstract: An organic light emitting diode (OLED) including: a substrate; a reflection layer on the substrate and including metal; a first electrode on the reflection layer and including a light transparent aluminum zinc oxide (AZO); an organic layer on the first electrode and including an emitting layer; and a second electrode on the organic layer and including a semi-permeable reflection layer.
    Type: Application
    Filed: February 8, 2010
    Publication date: August 19, 2010
    Inventors: Won-Jong Kim, Chang-Ho Lee, Jong-Hyuk Lee, Young-Woo Song, Yong-Tak Kim, Jin-Baek Choi, Joon-Gu Lee, Se-Jin Cho, Hee-Joo Ko, Il-Soo Oh, Hye-Lim Lee, Kyu-Hawn Hwang
  • Patent number: 7749803
    Abstract: An organic light-emitting device including a transparent conducting oxide layer as a cathode and a method of manufacturing the organic light-emitting device. The organic light-emitting device includes an anode disposed on a substrate. An organic functional layer including at least an organic light-emitting layer is disposed on the anode. The transparent conducting oxide layer used as the cathode is disposed on the organic functional layer. The transparent conducting oxide layer cathode is formed by plasma-assisted thermal evaporation. A microcavity structure is not formed in the organic light-emitting device, thereby avoiding a luminance change and a color shift as a function of viewing angle.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: July 6, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Chang-Ho Lee, Jin-Baek Choi, Won-Jong Kim, Jong-Hyuk Lee, Young-Woo Song, Yong-Tak Kim, Yoon-Hyeung Cho, Byoung-Duk Lee, Min-Ho Oh, Sun-Young Lee, So-Young Lee
  • Publication number: 20100052523
    Abstract: An organic light emitting diode (OLED) including a first electrode formed on a substrate; an intermediate layer formed on the first electrode and including an organic emission layer; and a second electrode formed on the intermediate layer, wherein at least one from among the first electrode and the second electrode is formed as a transparent electrode including a material selected from the group consisting of MoOx, WOx, YbOx, ReOx, GeOx, and combinations thereof. In this manner, the performance of the transparent electrode is enhanced.
    Type: Application
    Filed: August 17, 2009
    Publication date: March 4, 2010
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Won-Jong KIM, Chang-Ho Lee, Jong-Hyuk Lee, Young-Woo Song, Yong-Tak Kim, Joon-Gu Lee, Jin-Baek Choi, Kyu-Hwan Hwang, Hee-Joo Ko, Il-Soo Oh, Se-Jin Cho, Hye-Lim Lee
  • Publication number: 20100045176
    Abstract: An organic light emitting display includes an anode; an organic layer on the anode; and a cathode on the organic layer. The cathode includes a first region and a second region which are sequentially disposed on the organic layer in parallel. The first and second regions are formed by doping a metal oxide on an indium oxide matrix. The doping density of the metal oxide of the first region is greater than that of the second region, the metal oxide of the first region has a density gradient, and the density of the metal oxide in a boundary surface of the first and second regions is the same. An organic light emitting display according to the present invention can increase light emitting efficiency without using a resonance structure.
    Type: Application
    Filed: August 19, 2009
    Publication date: February 25, 2010
    Inventors: Yong-Tak Kim, Jong-Hyuk Lee, Won-Jong Kim, Joon-Gu Lee, Jin-Baek Choi
  • Publication number: 20100045177
    Abstract: The present invention is to provide an organic light emitting display and a method of manufacturing the same. The light emitting display according to the present invention includes: a first substrate on which a plurality of light emitting devices having first electrodes, organic light emitting layers, and second electrodes are disposed; a second substrate disposed to face the first substrate; a dam member disposed between the first substrate and the second substrate to surround the plurality of light emitting devices; an inorganic sealing material disposed between the first substrate and the second substrate in an outer area of the dam member and attaching the first substrate to the second substrate; and a silicon filling material provided between the first substrate and the second substrate inward of the dam member to be in contact with the second electrodes.
    Type: Application
    Filed: October 28, 2009
    Publication date: February 25, 2010
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Min-ho Oh, Yoon-hyeung Cho, Byoung-duk Lee, So-young Lee, Sun-young Lee, Won-jong Kim, Yong-tak Kim, Jin-baek Choi, Jong-hyuk Lee, Seung-han Lee
  • Publication number: 20100045181
    Abstract: The present invention is to provide an organic light emitting display and a method of manufacturing the same, the light emitting display including: a first substrate on which a plurality of light emitting devices are formed; a second substrate disposed to face the first substrate; a dam member disposed between the first substrate and the second substrate to surround the plurality of light emitting devices; an inorganic sealing material disposed between the first substrate and the second substrate on an outward side of the dam member and attaching the first substrate and the second substrate; and a filling material provided between the first substrate and the second substrate on an inward side of the dam member and formed of at least one inert liquid selected from the group consisting of perfluorocarbon and fluorinert.
    Type: Application
    Filed: October 28, 2009
    Publication date: February 25, 2010
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Min-ho Oh, Yoon-Hyeung Cho, Byoung-duk Lee, So-young Lee, Sun-yung Lee, Won-jong Kim, Yong-tak Kim, Jin-baek Choi, Jong-hyuk Lee, Seung-han Lee
  • Publication number: 20100006843
    Abstract: A polysilsesquioxane copolymer, a polysilsesquioxane copolymer including the same, an organic light emitting diode display including the same, and associated methods, the polysilsesquioxane copolymer including a copolymer including repeating units derived from a first monomer selected from the group consisting of alkoxyphenyltrialkoxysilane, alkoxyphenylalkyltrialkoxysilane, alkoxycarbonylphenyltrialkoxysilane, and alkoxycarbonylphenylalkyltrialkoxysilane, and repeating units derived from a second monomer including an ?,?-bis(trialkoxysilyl) compound monomer.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Inventors: Sun-Young Lee, Jong-Hyuk Lee, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, So-Young Lee, Won-Jong Kim, Yong-Tak Kim, Jin-Baek Choi, Do-Yeung Yoon
  • Publication number: 20090218570
    Abstract: A thin film transistor includes a channel layer including an amorphous 12CaO.7Al2O3 (C12A7) and a flat panel display device including the same. According to the present invention, the amorphous channel layer can be formed at a low temperature using C12A7. The thin film transistor including the amorphous channel layer has excellent electron mobility.
    Type: Application
    Filed: July 31, 2008
    Publication date: September 3, 2009
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jae-Heung Ha, Young-Woo Song, Jong-Hyuk Lee, Yong-Tak Kim