Patents by Inventor Do-Hyun Kwon

Do-Hyun Kwon 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: 9171892
    Abstract: A organic light emitting display device includes a thin film transistor (TFT) having a gate electrode, a source electrode and a drain electrode which are insulated from the gate electrode, and a semiconductor layer which is insulated from the gate electrode and which contacts each of the source electrode and the drain electrode; and a pixel electrode electrically connected to one of the source electrode and the drain electrode. The gate electrode is made up of a first conductive layer and a second conductive layer on the first conductive layer, and the pixel electrode is formed of the same material as the first conductive layer of the gate electrode on a same layer as the first conductive layer of the gate electrode.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: October 27, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Il-Jeong Lee, Choong-Youl Im, Dae-Hyun No, Jong-Mo Yeo, Cheol-Ho Yu
  • Patent number: 9135852
    Abstract: A display includes a switching transistor connected to a scan line and data line, a driving transistor connected to the switching transistor, a storage capacitor between a voltage line and the driving transistor, and an organic light emitting diode connected to the driving transistor. The data line and voltage line are at different layers, and the data line and a gate electrode of the driving transistor are at different layers. Also, a plate of the storage capacitor and the gate electrode of the driving transistor are of a same layer, and semiconductor layers of the switching and driving transistors are of a same layer.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: September 15, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Do-Hyun Kwon, Il-Jeong Lee, Choong-Youl Im, Ju-Won Yoon, Moo-Soon Ko, Min-Woo Woo
  • Patent number: 9109242
    Abstract: A variant of Corynebacterium shows activity greater than the endogenous activity of aspartate aminotransferase, aspartate kinase, aspartate semialdehyde dehydrogenase, dihydrodipicolinate synthase, dihydropicolinate reductase and diaminopimelate dicarboxylase and additionally pyruvate carboxylase. The variant is used in a method of producing L-lysine.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: August 18, 2015
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Young Hoon Park, Sang Jo Lim, Jun Ok Moon, So Yeon Rah, Hee Jong Lee, Jae Woo Jang, Do Hyun Kwon, Hyo Jin Kim, Jin Suck Sung, Hyung Joon Kim
  • Patent number: 9093572
    Abstract: A backplane for a flat panel display apparatus, includes: a thin film transistor (TFT) on a substrate and including an active layer, a gate electrode, a source electrode, and a drain electrode; a light-blocking layer between the substrate and the TFT; a first insulating layer between the light-blocking layer and the TFT; a capacitor including a first electrode on the same plane as the light-blocking layer, and a second electrode on the first electrode, wherein the first insulating layer is between the first electrode and the second electrode; and a pixel electrode on the same plane as the light-blocking layer.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: July 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Il-Jung Lee, Choong-Youl Im, Moo-Soon Ko, Ju-Won Yoon, Min-Woo Woo
  • Publication number: 20150155391
    Abstract: A thin film transistor (TFT) includes a semiconductor active layer, a gate electrode, a source electrode, and a drain electrode. The semiconductor active layer includes a first doped region as a source region, a second doped region as a drain region, an undoped region between the first and second doped regions. A third doped region is disposed between the second doped region and the undoped region. The gate electrode is insulated from the semiconductor active layer and overlaps the third doped region and the undoped region. The source electrode and the drain electrode are connected to the first and second doped regions.
    Type: Application
    Filed: December 3, 2014
    Publication date: June 4, 2015
    Inventors: Jung-Kyu LEE, Do-Hyun KWON, Min-Jung LEE, Sung-Eun LEE, Moo-Soon KO
  • Publication number: 20150104836
    Abstract: Provided is a method of producing L-amino acids by using a recombinant coryneform microorganism in which the expression of a target gene is weakened by using a gene transcription inhibition method.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 16, 2015
    Inventors: Jun Ok MOON, Sang Jo LIM, Do Hyun KWON, Kwang Ho LEE, Hyun Won BAE
  • Patent number: 8970539
    Abstract: An organic light emitting display apparatus including a substrate, a first touch sensing electrode layer on the substrate, a first protective layer on the substrate, the first protective layer covering the first touch sensing electrode layer, a ground layer on the first protective layer, the ground layer being electrically grounded, an insulating layer on the ground layer, and an organic light emitting device on the insulating layer.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Choong-Youl Im, Il-Jeong Lee, Young-Dae Kim, Ju-Won Yoon, Jong-Mo Yeo, Cheol-Ho Yu
  • Publication number: 20150034912
    Abstract: A thin film transistor substrate includes a semiconductor pattern on a base substrate, a first insulation member disposed on the semiconductor pattern, a second insulation pattern disposed on the first insulation member, and a gate electrode disposed on the first insulation member and the second insulation pattern. The second insulation pattern overlaps a first end portion of the semiconductor pattern, and exposes a second end portion of the semiconductor pattern opposite to the first end portion. The gate electrode overlaps both the first insulation member and the second insulation pattern.
    Type: Application
    Filed: January 16, 2014
    Publication date: February 5, 2015
    Inventors: Do-Hyun KWON, Min-Jung LEE, Sung-Eun LEE, Il-Jeong LEE, Jung-Kyu LEE, Kwang-Young CHOI
  • Patent number: 8946720
    Abstract: An organic light emitting diode display device and a method of manufacturing the same are disclosed. The organic light emitting diode display device includes a substrate having an emission section and a non-emission section, a semiconductor layer located on the substrate, a gate dielectric layer located over an entire front surface of the substrate, a gate electrode located in correspondence to the semiconductor layer, a dielectric layer located over the entire front surface of the substrate, source and drain electrodes and a first electrode located on the dielectric layer and electrically connected to the semiconductor layer, a pixel definition layer exposing a part of the first electrode, a spacer located on the pixel definition layer and located on the non-emission section of the substrate, an organic film layer located on the first electrode, and a second electrode located over the entire front surface of the substrate.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Choong-Youl Im, Dae-Hyun No, Jong-Mo Yeo, Ju-Won Yoon, Il-Jeong Lee, Song-Yi Jeon, Cheol-Ho Yu
  • Publication number: 20150014638
    Abstract: An organic light emitting diode (OLED) display includes a scan line, a data line, a driving voltage line, a switching transistor, a driving transistor and an OLED. The scan line is formed on a substrate to transmit a scan signal. The data line and the driving voltage line, intersecting the scan line, transmit a data signal and a driving voltage, respectively. The switching transistor, electrically coupled to the scan line and the data line, includes a switching semiconductor layer, a switching gate electrode, and a gate insulating layer having a first thickness. The driving transistor, electrically coupled to the switching drain electrode, includes a driving semiconductor layer, a driving gate electrode and a gate insulating layer having a second thickness. The OLED is electrically coupled to the driving drain electrode. The data line and the driving voltage line are formed with different layers from each other.
    Type: Application
    Filed: December 5, 2013
    Publication date: January 15, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Do-Hyun KWON, II-Jeong LEE, Choong-Youl IM, Ju-Won YOON, Moo-Soon KO, Min-Woo WOO
  • Publication number: 20150001487
    Abstract: A display device includes a substrate, an active layer, a gate insulation layer, a gate electrode, an interlayer insulation layer, a clad layer, a source electrode, and a drain electrode. The active layer is disposed on the substrate. The gate insulation layer is disposed on the active layer. The gate electrode is disposed on the gate insulation layer. The interlayer insulation layer is disposed on the gate electrode. A dielectric constant of the interlayer insulation layer is less than a dielectric constant of the gate insulation layer. The clad layer is disposed on the interlayer insulation layer. The source and drain electrodes are disposed on the clad layer.
    Type: Application
    Filed: December 11, 2013
    Publication date: January 1, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Il-Jeong Lee, Min-Jung Lee, Sung-Eun Lee, Jung-Kyu Lee, Kwang-Young Choi
  • Publication number: 20140356518
    Abstract: The present invention relates to a method for producing highly-concentrated L-amino acid and riboflavin simultaneously, and a microorganism for simultaneously producing L-amino acid and riboflavin. Specifically, the present invention relates to a modified microorganism for producing L-lysine or L-threonine, and riboflavin simultaneously, wherein the microorganism belonging to Corynebacterium sp. capable of producing L-lysine or L-threonine is modified by enhancing the activity of an enzyme family expressed by a rib operon which contains riboflavin biosynthesis gene family. Also, the present invention relates to a method for the simultaneous production of L-lysine or L-threonine, and riboflavin using the modified microorganism, and relates to a formulation or granular formulation, feed, and feed additive, containing L-lysine or L-threonine, and riboflavin produced from a culture medium of the modified microorganism.
    Type: Application
    Filed: October 17, 2012
    Publication date: December 4, 2014
    Inventors: Sang Hee Park, Jun Ok Moon, Sang Jo Lim, Do Hyun Kwon, Kyung Han Lee, Jin Suck Sung, Hyun Joon Kim
  • Publication number: 20140332768
    Abstract: A display includes a switching transistor connected to a scan line and data line, a driving transistor connected to the switching transistor, a storage capacitor between a voltage line and the driving transistor, and an organic light emitting diode connected to the driving transistor. The data line and voltage line are at different layers, and the data line and a gate electrode of the driving transistor are at different layers. Also, a plate of the storage capacitor and the gate electrode of the driving transistor are of a same layer, and semiconductor layers of the switching and driving transistors are of a same layer.
    Type: Application
    Filed: September 18, 2013
    Publication date: November 13, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Do-Hyun KWON, Il-Jeong LEE, Choong-Youl IM, Ju-Won YOON, Moo-Soon KO, Min-Woo WOO
  • Publication number: 20140320385
    Abstract: An organic light emitting diode (OLED) display including a first pixel, a second pixel, and a third pixel disposed in a matrix and first to third driving voltage lines configured to transmit a driving voltage to the first to third pixel, respectively. A width of one driving voltage line among the first to third driving voltage lines is different from the width of the other driving voltage lines.
    Type: Application
    Filed: December 9, 2013
    Publication date: October 30, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Do-Hyun KWON, Il-Jeong LEE, Choong-Youl IM, Ju-Won YOON, Moo-Soon KO, Min-Woo WOO
  • Publication number: 20140306198
    Abstract: Provided are organic luminescence display and method for manufacturing the same. According to an aspect of the present invention, there is provided an organic luminescence display comprising a substrate and a plurality of pixels disposed on the substrate. The pixels comprise a plurality of first pixels, each comprising a first organic light-emitting layer, and a plurality of second pixels which are smaller than the first pixels and each of which comprises a second organic light-emitting layer. The surface roughness of the second organic light-emitting layer is greater than the surface roughness of the first organic light-emitting layer.
    Type: Application
    Filed: December 18, 2013
    Publication date: October 16, 2014
    Inventors: Choong Youl Im, Il Jung Lee, Do Hyun Kwon, Ju Won Yoon, Moo-Soon Ko, Min Woo Woo
  • Patent number: 8850205
    Abstract: A method of and an authentication server for distributing a key are disclosed. According to an embodiment of the present invention, the method of distributing a key, which is distributed by an authentication server connected with wireless terminals through a communication network, for encrypting and decrypting data in accordance with providing a service can include: obtaining characteristic information by decrypting encrypted characteristic information that has been received from each of n number of wireless terminals; generating a random key; generating a group key used for encrypting and decrypting data in accordance with providing a service; and generating a distribution key by using the random key, the group key and the characteristic information, and transmitting the distribution key to each wireless terminal.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: September 30, 2014
    Assignee: Sungyunkwan University Foundation for Corporate Collaboration
    Inventors: Hyoung-Kee Choi, Jung-Yoon Kim, Do-Hyun Kwon, Eun-Young Lee, In-Hwan Kim, Se-Hwa Song
  • Publication number: 20140239270
    Abstract: A thin film transistor array substrate includes a plurality of pixels, each of the pixels including a capacitor comprising a first electrode, and a second electrode located above the first electrode, a data line extending in a first direction, configured to provide a data signal, located above the capacitor, and overlapping a part of the capacitor, and a driving voltage line configured to supply a driving voltage, located between the capacitor and the data line, and comprising a first line extending in the first direction, and a second line extending in a second direction substantially perpendicular to the first direction.
    Type: Application
    Filed: August 7, 2013
    Publication date: August 28, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD
    Inventors: Moon-Soon Ko, Il-Jung Lee, Choong-Youl Im, Do-Hyun Kwon, Ju-Won Yoon, Min-Woo Woo
  • Patent number: 8816344
    Abstract: A thin-film transistor includes a structure for protecting an active layer, and an organic light-emitting display device including the thin-film transistor.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: August 26, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Il-Jeong Lee, Choong-Youl Im, Ju-Won Yoon
  • Patent number: 8803416
    Abstract: An organic light emitting display (OLED) apparatus and a method of manufacturing the same, the OLED apparatus including: a substrate; an active layer formed on the substrate; a gate electrode insulated from the active layer; source and drain electrodes insulated from the gate electrode and electrically connected to the active layer; a pixel defining layer formed on the source and drain electrodes, having an aperture to expose one of the source and drain electrodes; an intermediate layer formed in the aperture and comprising an organic light emitting layer; and a facing electrode which is formed on the intermediate layer. One of the source and drain electrodes has an extension that operates as a pixel electrode. The aperture exposes the extended portion. The intermediate layer is formed on the extended portion.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kwon, Il-Jeong Lee, Choong-Youl Im, Dae-Hyun No, Cheol-Ho Yu
  • Publication number: 20140217415
    Abstract: A thin film transistor including: a substrate; an active layer formed over the substrate; a gate insulating layer formed over the active layer; a gate electrode formed over the gate insulating layer; an interlayer insulating layer formed over the gate electrode; and source and drain electrodes that contact the active layer via the interlayer insulating layer. The source and drain electrodes may have a structure including an aluminum (Al) layer, an aluminum-nickel alloy (AlNiX) layer, and an indium tin oxide (ITO) layer, which are sequentially stacked.
    Type: Application
    Filed: April 3, 2014
    Publication date: August 7, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jong-Yoon Kim, Il-Jeong Lee, Choong-Youl Im, Do-Hyun Kwon