Patents by Inventor Kyu-Hwan Hwang

Kyu-Hwan Hwang 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: 9099674
    Abstract: An organic light-emitting display device which is transparent by improving a transmittance in transmitting regions and which reduces a voltage drop in an opposite electrode comprises: a substrate having a transmitting region and pixel regions separated from each other by the transmitting region; thin film transistors positioned on the substrate and disposed in the pixel regions, respectively; a passivation layer covering the thin film transistors, formed in the transmitting region and the pixel regions, and having a first opening formed in a location corresponding to at least a portion of the transmitting region; pixel electrodes formed on the passivation layer so as to be electrically connected to the thin film transistors, respectively, located in the pixel regions, and disposed so as to overlap and cover the thin film transistors, respectively; an opposite electrode facing the pixel electrodes, formed so as to be able to transmit light, and located in the transmitting region and the pixel regions; an organ
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: August 4, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Heung Ha, Kyu-Hwan Hwang, Seok-Gyu Yoon, Young-Woo Song, Jong-Hyuk Lee, Jun-Ho Choi, Jin-Koo Chung
  • Patent number: 9070903
    Abstract: A quantum-dots containing multi-component inorganic oxide thin film is provided to include an amorphous inorganic oxide bulk region and a plurality of crystalline inorganic oxide regions, wherein the crystalline inorganic oxide regions are discontinuously formed to be surrounded by the amorphous inorganic oxide of the bulk region.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: June 30, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Chan Kim, Seok Gyu Yoon, Kyu Hwan Hwang, Eung Do Kim, Bo Ra Jung, Dong Kyu Seo, Won Jong Kim, Young Woo Song, Jong Hyuk Lee
  • Publication number: 20150144903
    Abstract: An organic light emitting diode device includes an emission layer between first and second electrodes, a first auxiliary layer, and a second auxiliary layer. The first electrode includes a silver-magnesium alloy having a greater content of silver than magnesium. The first auxiliary layer is between the first electrode and emission layer, and includes an inorganic material. The second auxiliary layer is between the first electrode and first auxiliary layer, and includes a material having a work function of less than or equal to about 4.0 eV.
    Type: Application
    Filed: August 14, 2014
    Publication date: May 28, 2015
    Inventors: Seok Gyu YOON, Dong Chan KIM, Eung Do KIM, Dong Kyu SEO, Bo Ra JUNG, Kyu Hwan HWANG, Won-Jong KIM, Young-Woo SONG, Jong Hyuk LEE
  • Patent number: 9035288
    Abstract: An organic light emitting diode includes a first electrode including a reflective metal layer of a light-reflective metal, an upper transparent conductive layer on the reflective metal layer, and an amorphous oxide layer on the upper transparent conductive layer, an organic emission layer on the first electrode, and a second electrode on the organic emission layer.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Chan Kim, Jong-Hyuk Lee, Young-Woo Song, Won-Jong Kim, Kyu-Hwan Hwang, Seok-Gyu Yoon, Eung-Do Kim, Bo-Ra Jung, Dong-Kyu Seo
  • Publication number: 20150132875
    Abstract: A mask for forming a layer, a method of forming a layer, and a manufacturing method of an organic light-emitting diode (OLED) display are disclosed. In one aspect, the mask includes at least one light absorption portion and at least one reflection portion that are formed in a unit region, the unit region corresponding to a region where a continuous layer is formed, wherein the light absorption portion and the reflection portion in the unit region are formed at different areas from each other.
    Type: Application
    Filed: May 28, 2014
    Publication date: May 14, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Yeon Hwa LEE, Hyun Sung BANG, Joon Gu LEE, Ji Young CHOUNG, Jin Baek CHOI, Kyu Hwan HWANG, Young Woo SONG
  • Publication number: 20150102305
    Abstract: An organic light-emitting device including a first sub-pixel, a second sub-pixel, and a third sub-pixel on a substrate; a plurality of first electrodes in the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively; a second electrode being a sub-common layer to the first sub-pixel and the second sub-pixel and facing the first electrodes of the first sub-pixel and the second sub-pixel; and a third electrode in the third sub-pixel and facing the first electrode of the third sub-pixel is disclosed.
    Type: Application
    Filed: July 21, 2014
    Publication date: April 16, 2015
    Inventors: Bo-Ra Jung, Seok-Gyu Yoon, Dong-Chan Kim, Won-Jong Kim, Eung-Do Kim, Dong-Kyu Seo, Da-Hea Im, Kyu-Hwan Hwang, Young-Woo Song, Jong-Hyuk Lee
  • Publication number: 20150069359
    Abstract: An organic light emitting display apparatus, including a first electrode; a second electrode on the first electrode, the second electrode including silver and magnesium; an organic emission layer between the first electrode and the second electrode; a metal layer between the organic emission layer and the second electrode; and a barrier layer between the organic emission layer and the second electrode.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 12, 2015
    Inventors: Seok-Gyu YOON, Kyu-Hwan HWANG, Dong-Chan KIM, Eung-Do KIM, Dong-Kyu SEO, Bo-Ra JUNG, Won-Jong KIM, Young-Woo SONG, Eui-Jin YOO, Jong-Hyuk LEE
  • Publication number: 20150048325
    Abstract: An organic light emitting diode (OLED) display is provided. An OLED display in accordance with an exemplary embodiment may include a substrate including a first subpixel, a second subpixel, and a third subpixel, a first electrode disposed on each of the first subpixel, the second subpixel, and the third subpixel, a second electrode facing the first electrode, a first common layer disposed on the first subpixel and the second subpixel, a first emission layer and a second emission layer disposed on the first common layer, a second common layer disposed on the third subpixel, and a third emission layer disposed on the second common layer. The first common layer may include a first doping layer and a second doping layer disposed on the first doping layer. Each of the doping layers may including a p-type dopant, and the second common layer may be formed as a single layer.
    Type: Application
    Filed: May 21, 2014
    Publication date: February 19, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seok-Gyu YOON, Kyu-Hwan HWANG, Eung-Do KIM, Dong-Chan KIM, Dong-Kyu SEO, Bo-Ra JUNG, Won-Jong KIM, Young-Woo SONG, Jong-Hyuk LEE, Da-Hea IM
  • Patent number: 8957443
    Abstract: An organic light-emitting display apparatus is provided. The organic light-emitting display apparatus includes: a pixel electrode for reflecting incident light and located on a substrate including a thin film transistor (TFT), and electrically connected to the TFT; an organic layer on the pixel electrode and including an emission layer; and an opposite electrode on the organic layer and including a resonant region for forming a resonant structure with the pixel electrode by reflecting light emitted from the emission layer, and a non-resonant region that is a region other than the resonant region.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: February 17, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyu-Hwan Hwang, Seok-Gyu Yoon, Eung-Do Kim, Dong-Chan Kim, Bo-Ray Jung, Won-Jong Kim, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Publication number: 20150021580
    Abstract: An organic light emitting display is disclosed. In one embodiment, the display includes 1) a substrate, 2) a plurality of pixels formed on the substrate, wherein each of the pixels comprises at least one circuit region including i) a first light emission area, ii) a second light emission area iii) at least one transmission area transmitting external light, and iv) a pixel circuit unit and 3) a first pixel electrode formed in the first light emission area and electrically connected to the pixel circuit unit, wherein the first pixel electrode comprises a first transparent conductive layer and a reflective layer.
    Type: Application
    Filed: October 2, 2014
    Publication date: January 22, 2015
    Inventors: Jae-Heung Ha, Seok-Gyu Yoon, Kyu-Hwan Hwang, Young-Woo Song
  • Publication number: 20140367651
    Abstract: An organic light emitting display apparatus includes a lower substrate and an upper substrate. The lower substrate includes a light emitting device having an organic emission layer between first and second electrodes, and an auxiliary electrode under and electrically connected to the second electrode. The upper substrate includes an embossing member contacting the second electrode. The embossing member is coupled to the upper substrate to face the lower substrate and applies a pressure to establish an electrical connection between the auxiliary electrode and the second electrode.
    Type: Application
    Filed: November 4, 2013
    Publication date: December 18, 2014
    Applicant: Samsung Dispaly Co., Ltd.
    Inventors: Young-Woo SONG, Jin-Koo CHUNG, Kyu-Hwan HWANG
  • Publication number: 20140339511
    Abstract: A quantum-dots containing multi-component inorganic oxide thin film is provided to include an amorphous inorganic oxide bulk region and a plurality of crystalline inorganic oxide regions, wherein the crystalline inorganic oxide regions are discontinuously formed to be surrounded by the amorphous inorganic oxide of the bulk region.
    Type: Application
    Filed: September 17, 2013
    Publication date: November 20, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dong Chan KIM, Seok Gyu YOON, Kyu Hwan HWANG, Eung Do KIM, Bo Ra JUNG, Dong Kyu SEO, Won Jong KIM, Young Woo SONG, Jong Hyuk LEE
  • Patent number: 8860010
    Abstract: An organic light emitting display is disclosed. In one embodiment, the display includes 1) a substrate, 2) a plurality of pixels formed on the substrate, wherein each of the pixels comprises at least one circuit region including i) a first light emission area, ii) a second light emission area iii) at least one transmission area transmitting external light, and iv) a pixel circuit unit and 3) a first pixel electrode formed in the first light emission area and electrically connected to the pixel circuit unit, wherein the first pixel electrode comprises a first transparent conductive layer and a reflective layer.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: October 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Heung Ha, Seok-Gyu Yoon, Kyu-Hwan Hwang, Young-Woo Song
  • Patent number: 8835926
    Abstract: An organic light emitting display device includes a substrate having transmitting and pixel regions, the pixel regions being separated by the transmitting regions, at least one thin film transistor in each of the pixel regions, a plurality of transparent first conductive lines electrically connected to the thin film transistors and extending across the transmitting regions, a plurality of second conductive lines electrically connected to the thin film transistors and extending across the transmitting regions, a passivation layer, a plurality of pixel electrodes on the passivation layer, the pixel electrodes being separated and positioned to correspond to respective pixel regions, each of the pixel electrodes being electrically connected to and overlapping a corresponding thin film transistor, an opposite electrode overlapping the pixel electrodes in the transmitting and pixel regions, and an organic emission layer between the pixel electrodes and the opposite electrode.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok-Gyu Yoon, Jae-Heung Ha, Jong-Hyuk Lee, Young-Woo Song, Kyu-Hwan Hwang
  • Publication number: 20140225081
    Abstract: In an aspect, an organic light emitting diode device including a first electrode, a second electrode facing the first electrode, and an emission layer positioned between the first electrode and second electrode, wherein the first electrode includes samarium (Sm) is provided.
    Type: Application
    Filed: September 18, 2013
    Publication date: August 14, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Bo-Ra Jung, Kyu-Hwan Hwang, Seok-Gyu Yoon, Eung-Do Kim, Dong-Chan Kim, Won-Jong Kim, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8803133
    Abstract: An organic light emitting diode device includes a first electrode, a second electrode, and an emission layer disposed between the first and second electrodes. The first electrode includes a first layer and a second layer. The first layer includes ytterbium (Yb), samarium (Sm), lanthanum (La), yttrium (Y), calcium (Ca), strontium (Sr), cesium (Cs), ruthenium (Ru), barium (Ba), or a combination thereof and having a thickness ranging from about 40 to 200 ?. The second layer includes silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), or a combination thereof and having a thickness ranging from about 100 to 250 ?.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Tak Kim, Won-Jong Kim, Ji-Young Choung, Joon-Gu Lee, Jin-Baek Choi, Kyu-Hwan Hwang, Il-Soo Oh, Jong-Hyuk Lee
  • Patent number: 8797239
    Abstract: An organic light-emitting display device includes a substrate, the substrate having a plurality of transmitting regions, a plurality of thin film transistors, a plurality of conductive lines, a passivation layer, a plurality of pixel electrodes on the passivation layer, an opposite electrode facing the plurality of pixel electrodes, an organic layer disposed among the plurality of pixel electrodes and the opposite electrode, and a plurality of masking films disposed in the plurality of transmitting regions.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: August 5, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok-Gyu Yoon, Kyu-Hwan Hwang, Jae-Heung Ha, Young-Woo Song, Jong-Hyuk Lee
  • Publication number: 20140186983
    Abstract: A method of cleaning a mask includes preparing a mask on which a first metal layer and a second metal layer are stacked sequentially, and lifting off the second metal layer by removing the first metal layer.
    Type: Application
    Filed: July 17, 2013
    Publication date: July 3, 2014
    Inventors: Eung Do KIM, Won Jong KIM, Kyu Hwan HWANG, Seok Gyu YOON, Dong Chan KIM, Bo Ra JUNG, Dong Kyu SEO, Young Woo SONG, Jong Hyuk LEE
  • Patent number: 8735876
    Abstract: An organic light emitting diode display, which includes: a first electrode; a second electrode facing the first electrode; and an emission layer interposed between the first electrode and the second electrode. Herein the first electrode includes: a first layer including a material having a work function of about 4.0 eV or less and an electron injection material; and a second layer including a material having a resistivity of about 10 ??cm or less. The first layer is disposed between the second layer and the emission layer.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: May 27, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyu-Hwan Hwang, Seok-Gyu Yoon, Jae-Heung Ha, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Publication number: 20140138639
    Abstract: An organic light emitting diode includes a first electrode including a reflective metal layer of a light-reflective metal, an upper transparent conductive layer on the reflective metal layer, and an amorphous oxide layer on the upper transparent conductive layer, an organic emission layer on the first electrode, and a second electrode on the organic emission layer.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 22, 2014
    Inventors: Dong-Chan KIM, Jong-Hyuk LEE, Young-Woo SONG, Won-Jong KIM, Kyu-Hwan HWANG, Seok-Gyu YOON, Eung-Do KIM, Bo-Ra JUNG, Dong-Kyu SEO