Patents by Inventor Ji Youn Lee

Ji Youn Lee 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: 20160293868
    Abstract: An organometallic compound may be represented by one selected from the group of Formulae 5 to 8:
    Type: Application
    Filed: June 16, 2016
    Publication date: October 6, 2016
    Inventors: Jong-Won CHOI, Yoon-Hyun KWAK, Bum-Woo PARK, Sun-Young LEE, Wha-II CHOI, So-Yeon KIM, Ji-Youn LEE
  • Publication number: 20160284782
    Abstract: A display device comprises a base substrate, a first metal layer formed over the base substrate, an interlayer insulating layer formed over the first metal layer and comprising a contact hole, a second metal layer formed over the interlayer insulating layer and connected with the first metal layer through the contact hole, an anisotropic conductive film formed over the second metal layer and covering the contact hole, and a flexible circuit board attached to the anisotropic conductive film and configured to transmit a driving signal for the array of pixels. The first metal layer comprises a molten portion formed in the non-display area.
    Type: Application
    Filed: September 16, 2015
    Publication date: September 29, 2016
    Inventors: Il Hun SEO, Ji Youn LEE, Byoung Ki KIM
  • Patent number: 9455409
    Abstract: An amine-based compound and an organic light-emitting device including the amine-based compound are provided.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: September 27, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Youn Lee, Yoon-Hyun Kwak, Bum-Woo Park, Sun-Young Lee, Jong-Won Choi, Wha-Il Choi, So-Yeon Kim
  • Patent number: 9425410
    Abstract: An organic light-emitting diode includes a substrate, a first electrode on the substrate, a second electrode facing the first electrode, an emission layer between the first electrode and the second electrode, a hole transfer region between the first electrode and the emission layer, and an electron transfer region between the emission layer and the second electrode. The hole transfer region includes a first compound represented by Formula 1, and the emission layer includes a second compound represented by Formula 100.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: August 23, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: So-Yeon Kim, Yoon-Hyun Kwak, Bum-Woo Park, Sun-Young Lee, Wha-Il Choi, Jong-Won Choi, Ji-Youn Lee
  • Publication number: 20160233289
    Abstract: A transparent display substrate including a base substrate having a pixel area and a transmission area, a thickness of the base substrate at the transmission area being less than a thickness of the base substrate at the pixel area, a pixel circuit at the pixel area of the base substrate, an insulation structure covering the pixel circuit, the insulation structure having an opening or a concave portion at the transmission area of the base substrate, and a pixel electrode at the pixel area of the base substrate and extending at least partially through the insulation structure to be electrically connected to the pixel circuit.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 11, 2016
    Inventors: Yong-Duck SON, Ji-Youn LEE, Dae-Woo LEE, Jae Beom CHOI
  • Patent number: 9385327
    Abstract: A heterocyclic compound is represented by Formula 1. An organic light emitting device includes a first electrode, a second electrode and an organic layer between the first and second electrodes. The organic layer includes the heterocyclic compound. An organic light-emitting display apparatus includes the organic light-emitting device and a transistor including a source, a drain, a gate and an active layer. The source or the drain is electrically connected to the first electrode of the organic light-emitting device.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: July 5, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Young Lee, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-Il Choi, So-Yeon Kim, Ji-Youn Lee
  • Publication number: 20160181332
    Abstract: A light emitting display device includes a substrate, a first electrode, a pixel defining layer, a light emitting layer, a second electrode, and a reflective pattern. The substrate includes a plurality of pixels, each including a top emission pixel in a first area and a bottom emission pixel in a second area. The first electrode is in the first area and the second area. The pixel defining layer includes pixel openings to expose the first electrode and reflective pattern openings between adjacent pixels. The light emitting layer is on the first electrode, and the second electrode is on the light emitting layer. The reflective pattern is in the reflective pattern opening and spaced from the second electrode in the first area.
    Type: Application
    Filed: April 20, 2015
    Publication date: June 23, 2016
    Inventors: Se Hun PARK, Yong Duck SON, Jae Hwan OH, Ji Youn LEE, Young Jin CHANG, Jae Beom CHOI
  • Patent number: 9373798
    Abstract: An organometallic compound may be represented by Formula 1:
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 21, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Won Choi, Yoon-Hyun Kwak, Bum-Woo Park, Sun-Young Lee, Wha-Il Choi, So-Yeon Kim, Ji-Youn Lee
  • Patent number: 9349966
    Abstract: A heterocyclic compound is represented by Formula 1. An organic light emitting device includes a first electrode, a second electrode and an organic layer between the first and second electrodes. The organic layer includes the heterocyclic compound. An organic light-emitting display apparatus includes the organic light-emitting device and a transistor including a source, a drain, a gate and an active layer. The source or the drain is electrically connected to the first electrode of the organic light-emitting device.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: May 24, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Young Lee, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-Il Choi, So-Yeon Kim, Ji-Youn Lee
  • Publication number: 20160126374
    Abstract: The present invention relates to a method for manufacturing a solar cell comprising a selective emitter, the method comprising the steps of: forming an electrode pattern and an alignment mark by performing a first impurity doping locally on one surface of a substrate; and performing a second impurity doping on the entire surface of the first doped substrate, wherein, as a result of the first and second doping, the alignment mark is formed on a first emitter or a second emitter, and the electrode pattern is formed on the second emitter. When manufacturing the selective emitter, the alignment mark is formed by doping processes. The use of the alignment mark may increase the matching of the electrode pattern formed in the selective emitter and the resulting electrode line. Further, a solar cell having the selective emitter has excellent conversion efficiency and a high fill factor value.
    Type: Application
    Filed: September 24, 2013
    Publication date: May 5, 2016
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Yong Hyun KIM, Ji Youn LEE, Jung Chul LEE
  • Patent number: 9118021
    Abstract: Novel heterocyclic compounds that impart improved luminescence efficiency characteristics such as low voltage, high luminance and long lifetime to organic light-emitting devices are described. Synthetic methods for the subject heterocyclic compounds are described. Methods for the construction of an organic light-emitting device comprising at least one of the subject heterocyclic compounds and comprising various hole transport layers, various electron transport layers and an emission layer are disclosed. The emission layer can comprise red, green, blue and white emission layers; one of said emission layers can comprise a phosphorescent compound. In certain embodiments, the heterocyclic compounds are useful as either fluorescent dopants or as phosphorescent hosts in the emission layer.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: August 25, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Young Lee, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-Il Choi, So-Yeon Kim, Ji-Youn Lee, Bo-Ra Lee
  • Publication number: 20150177435
    Abstract: An optical element and a use of the optical element are provided. The exemplary optical element can be useful in realizing a smart blind having excellent transmission and blocking characteristics in front and lateral surfaces thereof without using a retardation film by employing a polarizing layer whose polarization characteristics are patterned using a guest/host-type dye layer including a polymerizable liquid crystal compound and a dichroic dye. Such an optical element may be applied to various light modulating devices such as smart blinds, smart windows, window protective films, flexible display elements, active retarders for displaying a 3D image, or viewing angle adjustment films.
    Type: Application
    Filed: February 19, 2015
    Publication date: June 25, 2015
    Inventors: Sin Young KIM, Ji Youn LEE, Moon Soo PARK, Hyuk YOON
  • Publication number: 20150147490
    Abstract: Provided are a liquid crystal composition, a liquid crystal film and a display device. The liquid crystal composition according to the present application may form a liquid crystal layer in which staining due to a thickness difference does not occur even in large-area coating such that a liquid crystal layer can be formed on a base layer having erosivity to a raw material since the liquid crystal composition may have a suitable solubility even in a solvent in which solubility is normally low.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 28, 2015
    Inventors: Su Young RYU, Doo Young HUH, Seong Jin KIM, Chul In JOUNG, Ji Youn LEE
  • Publication number: 20150129029
    Abstract: Disclosed herein are a glass frit and a composition for solar cell electrodes including the same. The glass frit includes lead oxide (PbO) and boron oxide (B2O3) in a weight ratio of lead oxide to boron oxide of about 1:0.075 to about 1:1, wherein a mixture of the glass frit and aluminum (Al) powder in a weight ratio of about 1:1 exhibits a phase transition peak in the range of about 400° C. to about 650° C. on a cooling curve obtained via TG-DTA analysis, measured after heating the mixture to 900° C. at a heating rate of 20° C./min, holding for ten minutes, followed by cooling the mixture at a cooling rate of 10° C. The composition can provide stable efficiency given varying surface resistance and minimize adverse influence on a p-n junction.
    Type: Application
    Filed: September 16, 2014
    Publication date: May 14, 2015
    Inventors: Young Wook CHOI, Dong Suk KIM, Ji Youn LEE
  • Publication number: 20150107664
    Abstract: A composition for solar cell electrodes, an electrode fabricated using the same, and a solar cell including the electrode, the composition including a conductive powder; a glass frit; and an organic vehicle, wherein the conductive powder includes silver powder and aluminum powder, the silver powder includes silver particles having an average particle size D50 of 1.5 ?m or more in an amount of 50 wt % or more, based on a total weight of the silver powder.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 23, 2015
    Inventors: Young Wook CHOI, Eun Kyung KIM, Ji Youn LEE
  • Patent number: 9006721
    Abstract: An organic light-emitting diode includes a substrate, a first electrode on the substrate, a second electrode facing the first electrode, an emission layer interposed between the first electrode and the second electrode, a hole transportation region between the first electrode and the emission layer, and an electron transportation region interposed between the emission layer and the second electrode. The hole transportation region includes a first compound represented by Formula 1 below, and at least one of the hole transportation region and the emission layer includes a second compound represented by Formula 100 below: wherein Ar101, Ar102, xa, xb, R101-R119, Ar50, Ar60, R51-R60 and p are further defined.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Youn Lee, Yoon-Hyun Kwak, Bum-Woo Park, Sun-Young Lee, Jong-Won Choi, Wha-Il Choi, So-Yeon Kim
  • Patent number: 8999528
    Abstract: A condensation compound is represented by Formula 1, 2, or 3 where R1 to R24 and A to F are further defined in the detailed description.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: So-Yeon Kim, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-Il Choi, Sun-Young Lee, Ji-Youn Lee, Jin-Young Yun
  • Publication number: 20150076459
    Abstract: An organic light-emitting device includes an emission layer including a novel dopant comprising a first compound represented by Formula 1 and a novel host comprising a second compound represented by Formula 100 wherein in Formulae 1 and 100, X1, X11, R1, R2, R4, R51 to R60, L, a, n and m are the same as defined in the present application.
    Type: Application
    Filed: May 8, 2014
    Publication date: March 19, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Won Choi, Yoon-Hyun Kwak, Bum-Woo Park, Sun-Young Lee, Wha-Il Choi, So-Yeon Kim, Ji-Youn Lee
  • Publication number: 20150053934
    Abstract: A heterocyclic compound represented by Formula 1 and an organic light-emitting device including the same. The heterocyclic compound represented by Formula 1 has excellent light emitting characteristics and high charge transporting capabilities.
    Type: Application
    Filed: March 18, 2014
    Publication date: February 26, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sun-Young LEE, Yoon-Hyun KWAK, Bum-Woo PARK, Jong-Won CHOI, Wha-Il CHOI, So-Yeon KIM, Ji-Youn LEE
  • Publication number: 20140225079
    Abstract: An organic light-emitting diode includes an emission layer, a hole migration transfer region and an electron migration region between the first and the second electrodes. The organic light-emitting diode (OLED) has low driving voltages, higher luminance, higher efficiency, higher color purity and longer lifetime than a conventional OLED.
    Type: Application
    Filed: August 30, 2013
    Publication date: August 14, 2014
    Applicant: Samsung Display Co., LTD.
    Inventors: Sun-Young Lee, Yoon-Hyun Kwak, Bum-Woo Park, Jong-Won Choi, Wha-Il Choi, So-Yeon Kim, Ji-Youn Lee