Patents by Inventor Joon Hak Oh

Joon Hak Oh 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: 7605395
    Abstract: A thin film transistor substrate includes an insulating substrate, a gate electrode formed on the insulating substrate, a first gate insulating film formed on the gate electrode and having an opening for exposing at least part of the gate electrode, a second gate insulating film covering the gate electrode exposed by the opening and having a larger dielectric constant than the first gate insulating film, a source electrode and a drain electrode disposed apart from each other in a central area of the second gate insulating film and defining a channel region there between, and an organic semiconductor layer formed in the channel region. A method for forming the TFT substrate is also provided. Thus, the present invention provides a TFT substrate in which a characteristic of a TFT is improved.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: October 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Keun-kyu Song, Yong-uk Lee, Mun-pyo Hong, Tae-young Choi, Joon-hak Oh, Bo-sung Kim, Soo-jin Kim, Young-min Kim
  • Publication number: 20090236591
    Abstract: The present invention relates to N,N?-bis(fluorophenylalkyl)-substituted perylene-3,4:9,10-tetracarboximides, their preparation and their use as charge transport materials, exciton transport materials or emitter materials.
    Type: Application
    Filed: March 18, 2009
    Publication date: September 24, 2009
    Applicants: BASF SE, The Board of Trust. of the Lelnd Stanf. Jun. Univ.
    Inventors: Martin Konemann, Rudiger Schmidt, Frank Wurthner, Zhenan Bao, Joon Hak Oh
  • Patent number: 7593069
    Abstract: Disclosed is an LCD comprising a plurality of data lines extending in a first direction, a plurality of gate lines extending in a second direction defining with the plurality of data lines a plurality of pixel areas arranged in a matrix configuration and supplying a gate signal to at least two rows of the pixel areas simultaneously. Thin film transistors are connected to the plurality of gate lines and the plurality of data lines. Also disclosed is a driving method for an LCD including a thin film transistor substrate including pixel areas arranged in a matrix form with a gate line extending in a first direction and a data line extending in a second direction, along with a backlight providing the TFT substrate with light of three primary colors. In the method, the three primary colors are sequentially provided in one frame period and at least two rows of pixel areas and simultaneously provided with a common gate signal.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: September 22, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-hak Oh, Cheol-woo Park, Chong-chul Chai
  • Publication number: 20090195725
    Abstract: A thin film transistor array panel is provided, which includes: a substrate; a plurality of first signal lines formed on the substrate; a plurality of second signal lines intersecting the first signal lines to define pixel areas; first and second pixel electrodes disposed substantially in a pixel area and having different areas; a plurality of thin film transistors connected to the first and the second signal lines and at least one of the first and the second pixel electrodes; a coupling electrode overlapping the second pixel electrode; and a tilt direction defining member for determining tilt directions of liquid crystal molecules formed on the substrate.
    Type: Application
    Filed: February 11, 2009
    Publication date: August 6, 2009
    Inventors: Hee-Seob Kim, Joon-Hak Oh, Doo-Hwan You, Young-Chol Yang
  • Publication number: 20090111211
    Abstract: The present disclosure relates to a display device comprising an insulating substrate; a source electrode and a drain electrode on the insulating substrate and separated by a channel area; an organic semiconductor layer formed in the channel area and on at least a portion of the source electrode and at least a portion of the drain electrode; and a self-assembly monolayer having a first portion disposed between the organic semiconductor layer and the source electrode and a second portion disposed between the organic semiconductor layer and the drain electrode to reduce contact resistance between the electrodes and the organic semiconductor layer. Thus, embodiments of present invention provide a display device including a TFT that is enhanced in its performance.
    Type: Application
    Filed: December 1, 2008
    Publication date: April 30, 2009
    Inventors: Bo-Sung KIM, Joon-hak Oh, Yoag-uk Lee
  • Patent number: 7525623
    Abstract: A liquid crystal display is provided, which includes: first and second panels facing each other, interposing a gap therebetween, and first and second field generating electrodes, respectively; a liquid crystal layer filled in the gap and including a plurality of liquid crystal molecules; first and second tilt direction defining members disposed on the first and the second panels, respectively, and giving a first tilt direction to a group of the liquid crystal molecules; and a third tilt direction defining member disposed on one of the first and the second panels and giving a second tilt direction oblique to the first tilt direction to the group of the liquid crystal molecules.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: April 28, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Seob Kim, Doo-Hwan You, Joon-Hak Oh, Jong-Lae Kim, Sung-Kyu Hong, Young-Chol Yang
  • Publication number: 20090078312
    Abstract: The present invention relates to a process for producing a substrate coated with rylenetetracarboximides, in which a substrate is treated with an N,N?-bisubstituted rylenetetracarboximide and the treated substrate is heated to a temperature at which the N,N?-bisubstituted rylenetetracarboximide is converted to the corresponding N,N?-unsubstituted compound. The present invention further relates to semiconductor units, organic solar cells, excitonic solar cells and organic light-emitting diodes which comprise a substrate produced by this process. The present invention further relates to a process for preparing N,N?-unsubstituted rylenetetracarboximides, in which the corresponding N,N?-bisubstituted rylenetetracarboximides are provided and heated to a temperature at which these compounds are converted to the corresponding N,N?-unsubstituted compounds.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 26, 2009
    Applicants: BASF SE, The board of Trustees of the Leland Stan. Jr. Uni.
    Inventors: Martin Konemann, Torsten Noe, Zhenan Bao, Joon Hak Oh
  • Patent number: 7495735
    Abstract: A thin film transistor array panel is provided, which includes: a substrate; a plurality of first signal lines formed on the substrate; a plurality of second signal lines intersecting the first signal lines to define pixel areas; first and second pixel electrodes disposed substantially in a pixel area and having different areas; a plurality of thin film transistors connected to the first and the second signal lines and at least one of the first and the second pixel electrodes; a coupling electrode overlapping the second pixel electrode; and a tilt direction defining member for determining tilt directions of liquid crystal molecules formed on the substrate.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: February 24, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Seob Kim, Joon-Hak Oh, Doo-Hwan You, Young-Chol Yang
  • Patent number: 7460192
    Abstract: A thin film diode panel comprises a pixel electrode formed on a substrate, the pixel electrode including a stem portion and a plurality of branch portions extended from the stem portion, and a data electrode line formed on the substrate, the data electrode line including a plurality of branch electrodes formed parallel to the plurality of branch portions. The plurality of branch portions may extend in a direction perpendicular to the stem portion and the plurality of branch electrodes may extend in a direction perpendicular to the data electrode line.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: December 2, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hak Oh, Chong-Chul Chai, Kyong-Ju Shin, Jin-Hong Kim, Sung-Jin Hong
  • Publication number: 20080291195
    Abstract: A liquid crystal display is provided, which includes: a plurality of pixel row groups, each pixel row group including at least one pixel row that includes a plurality of pixels arranged in a matrix and including switching elements; a plurality of gate lines connected to the switching elements and transmitting a gate-on voltage for turning on the switching elements; and a plurality of data lines connected to the switching elements and transmitting data voltages, wherein the switching elements in adjacent pixel row groups are connected to the data lines at opposite sides.
    Type: Application
    Filed: August 11, 2008
    Publication date: November 27, 2008
    Inventors: Baek-Woon Lee, Joon-Hak Oh, Keun-Kyu Song, Cheol-Woo Park
  • Publication number: 20080258149
    Abstract: A thin film transistor array panel according to an embodiment of the present invention includes: a gate line; a data line intersecting the gate line; a thin film transistor connected to the gate line and the data line; a pixel electrode connected to the thin film transistor; and a shielding electrode electrically isolated from the data line, covering the data line at least in part, and having an aperture exposing the data line.
    Type: Application
    Filed: June 25, 2008
    Publication date: October 23, 2008
    Inventors: Baek-Woon Lee, Keun-Kyu Song, Joon-Hak Oh
  • Patent number: 7423625
    Abstract: A liquid crystal display is provided, which includes: a plurality of pixel row groups, each pixel row group including at least one pixel row that includes a plurality of pixels arranged in a matrix and including switching elements; a plurality of gate lines connected to the switching elements and transmitting a gate-on voltage for turning on the switching elements; and a plurality of data lines connected to the switching elements and transmitting data voltages, wherein the switching elements in adjacent pixel row groups are connected to the data lines at opposite sides.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: September 9, 2008
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Baek-Woon Lee, Joon-Hak Oh, Keun-Kyu Song, Cheol-Woo Park
  • Patent number: 7405427
    Abstract: A thin film transistor array panel according to an embodiment of the present invention includes: a gate line; a data line intersecting the gate line; a thin film transistor connected to the gate line and the data line; a pixel electrode connected to the thin film transistor; and a shielding electrode electrically isolated from the data line, covering the data line at least in part, and having an aperture exposing the data line.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: July 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Baek-Woon Lee, Keun-Kyu Song, Joon-Hak Oh
  • Publication number: 20080076204
    Abstract: A method for manufacturing a thin film transistor (“TFT”) array panel includes forming a gate electrode, forming source and drain electrodes insulated from the gate electrode, forming an organic semiconductor contacting the source and drain electrodes, spraying a solvent on the organic semiconductor, drying the solvent at room temperature, and annealing the organic semiconductor.
    Type: Application
    Filed: September 21, 2007
    Publication date: March 27, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-Ho YOON, Young-Min KIM, Jung-Han SHIN, Joon-Hak OH, Tae-Young CHOI, Seung-Hwan CHO
  • Publication number: 20080048184
    Abstract: A method for forming a contact of an organic active layer is provided. In this method, a transparent conductive oxide thin film is formed on a substrate, and a surface of the oxide thin film is activated by inducing a base —OH and an oxide —O. Then, the oxide thin film is washed with a hydrophobic material after activating the surface. A self-assembled monolayer is formed on the oxide thin film after washing, and an organic active layer is formed on the self-assembled monolayer. A method for manufacturing a flat panel display including formation of the contact, and an organic thin film transistor display panel and an organic light emitting diode display including the contact are also provided.
    Type: Application
    Filed: August 27, 2007
    Publication date: February 28, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joon-Hak OH, Bo-Sung KIM, Seong-Sik SHIN, Min-Ho YOON, Young-Soo YOON, Seung-Hyun JEE
  • Publication number: 20080035919
    Abstract: Disclosed is a thin film transistor array panel including a substrate, a data line formed on the substrate, a gate line that intersects the data line and includes a gate electrode, a source electrode connected to the data line, and a drain electrode facing the source electrode. An organic semiconductor contacts the source electrode and the drain electrode via an insulating layer having an opening that defines the location of the organic semiconductor. The insulating layer includes an acrylic photosensitive resin having a fluorine-containing compound. A method of manufacturing the above-described thin film transistor array panel is disclosed.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 14, 2008
    Inventors: Jung-Han Shin, Keun-Kyu Song, Tae-Young Choi, Young-Min Kim, Joon-Hak Oh, Seung-Hwan Cho
  • Publication number: 20080038881
    Abstract: A thin film transistor array panel according to an embodiment of the present invention includes a gate electrode, a source electrode and a drain electrode opposing each other and separated from each other on the gate electrode. An organic semiconductor is in contact with the source electrode and the drain electrode. A gate insulator is formed between the gate electrode and the organic semiconductor. A pixel electrode is connected to the drain electrode. A passivation member covers the organic semiconductor and includes a nonionic soluble polymer.
    Type: Application
    Filed: January 10, 2007
    Publication date: February 14, 2008
    Inventors: Jung-Han Shin, Joon-Hak Oh, Min-Ho Yoon
  • Publication number: 20080018842
    Abstract: A liquid crystal display is provided, which includes: first and second panels facing each other, interposing a gap therebetween, and first and second field generating electrodes, respectively; a liquid crystal layer filled in the gap and including a plurality of liquid crystal molecules; first and second tilt direction defining members disposed on the first and the second panels, respectively, and giving a first tilt direction to a group of the liquid crystal molecules; and a third tilt direction defining member disposed on one of the first and the second panels and giving a second tilt direction oblique to the first tilt direction to the group of the liquid crystal molecules.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Hee-Seob KIM, Doo-Hwan YOU, Joon-Hak OH, Jong-Lae KIM, Sung-Kyu HONG, Young-Chol YANG
  • Publication number: 20080012821
    Abstract: A electrophoretic display is provided, which includes: a thin film transistor array panel including a plurality of data lines having a plurality of source electrodes and a plurality of drain electrodes, a plurality of organic semiconductor islands at least covering the portion of the source and the drain electrodes and disposed between the source and the drain electrodes, a plurality of gate insulators formed on the organic semiconductor islands, a plurality of gate lines including a plurality of gate electrodes disposed on the gate insulators, and a plurality of pixel electrodes connected to the drain electrodes; a common electrode panel facing the thin film transistor array panel and having a common electrode; and a plurality of micro-capsules containing a plurality of negative and positive pigment particles and interposed between the thin film transistor array panel and the common electrode panel.
    Type: Application
    Filed: September 24, 2007
    Publication date: January 17, 2008
    Inventors: Yong-Uk Lee, Joon-Hak Oh, Jong-Hyun Seo, Bo-Sung Kim, Mun-Pyo Hong
  • Patent number: 7286281
    Abstract: A electrophoretic display is provided, which includes: a thin film transistor array panel including a plurality of data lines having a plurality of source electrodes and a plurality of drain electrodes, a plurality of organic semiconductor islands at least covering the portion of the source and the drain electrodes and disposed between the source and the drain electrodes, a plurality of gate insulators formed on the organic semiconductor islands, a plurality of gate lines including a plurality of gate electrodes disposed on the gate insulators, and a plurality of pixel electrodes connected to the drain electrodes; a common electrode panel facing the thin film transistor array panel and having a common electrode; and a plurality of micro-capsules containing a plurality of negative and positive pigment particles and interposed between the thin film transistor array panel and the common electrode panel.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: October 23, 2007
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Yong-Uk Lee, Joon-Hak Oh, Jong-Hyun Seo, Bo-Sung Kim, Mun-Pyo Hong