Patents by Inventor Myeong-Seob So

Myeong-Seob So 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: 8704305
    Abstract: A thin film transistor of the present invention comprises, an active layer formed on an insulating substrate and having a channel region and source/drain regions; a gate electrode formed corresponding to the channel region of the active region; a body contact region separately formed with the source/drain regions in the active layer; source/drain electrodes each connected to the source/drain regions; and a conductive wiring for connecting the body contact region and the gate electrode.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Bon Koo, Byoung-Deog Choi, Myeong-Seob So, Won-Sik Kim
  • Patent number: 7834397
    Abstract: A thin film transistor (TFT), a method of fabricating the same, and a display device including the TFT, are provided. In the TFT, a channel region is connected to a gate electrode so that the influence of a substrate bias is reduced or eliminated. Thus, the threshold voltage of the TFT is reduced, a subthreshold slope can be improved, and a large drain current can be obtained at a low gate voltage.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: November 16, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Byoung-Keon Park, Byoung-Deog Choi, Myeong-Seob So
  • Patent number: 7671359
    Abstract: Provided are a thin film transistor, a method for preparing the same and a flat panel display employing the same. The thin film transistor includes a gate electrode, source and drain electrodes insulated from the gate electrode, a semiconductor layer insulated from the gate electrode and electrically connected to the source and drain electrodes, an insulating layer, and a carrier blocking layer interposed between the semiconductor layer and the insulating layer and preventing electrons or holes moving through semiconductor layer from being trapped in the insulating layer. Since the thin film transistor is constructed such that the carrier blocking layer is interposed between the semiconductor layer and the insulating layer, the electrons or holes injected into the semiconductor layer can be prevented from being trapped in the insulating layer, thereby suppressing hysteresis characteristic. In addition, a reliable flat panel display device can be manufactured using the thin film transistor.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: March 2, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Min-Chul Suh, Myeong-Seob So, Jae-Bon Koo, Nam-Choul Yang
  • Patent number: 7274036
    Abstract: A TFT including a gate metallic layer, a body layer doped with a dopant having a first polarity, a source layer and a drain layer doped with a dopant having a second polarity, a semiconductor layer formed between the source layer and the drain layer, and a contact coupling the gate metallic layer and the body layer.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: September 25, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Byoung-Deog Choi, Won-Sik Kim, Myeong-Seob So
  • Patent number: 7274343
    Abstract: A PDP address driver circuit includes: an inductor coupled to a conductive pattern. A first current applier applyies a current of a first direction to the inductor and the conductive pattern while sustaining a panel capacitor at an address voltage. A discharger generates a resonance between the inductor and the panel capacitor to discharge the panel capacitor to 0V, while the current of the first direction flows to the inductor and the conductive pattern. A second current applier applyies a current of a second direction to the inductor and the conductive pattern while sustaining the panel capacitor at 0V. A charger generates a resonance between the inductor and the panel capacitor to charge the panel capacitor to the address voltage, while the current of the second direction flows to the inductor and the conductive pattern.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: September 25, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun-Hyung Kim, Jin-Sung Kim, Myeong-Seob So, Nam-Sung Jung
  • Publication number: 20070052022
    Abstract: A thin film transistor (TFT), a method of fabricating the same, and a display device including the TFT, are provided. In the TFT, a channel region is connected to a gate electrode so that the influence of a substrate bias is reduced or eliminated. Thus, the threshold voltage of the TFT is reduced, a subthreshold slope can be improved, and a large drain current can be obtained at a low gate voltage.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 8, 2007
    Inventors: Byoung-Keon Park, Byoung-Deog Choi, Myeong-Seob So
  • Publication number: 20060160280
    Abstract: Provided are a thin film transistor, a method for preparing the same and a flat panel display employing the same. The thin film transistor includes a gate electrode, source and drain electrodes insulated from the gate electrode, a semiconductor layer insulated from the gate electrode and electrically connected to the source and drain electrodes, an insulating layer, and a carrier blocking layer interposed between the semiconductor layer and the insulating layer and preventing electrons or holes moving through semiconductor layer from being trapped in the insulating layer. Since the thin film transistor is constructed such that the carrier blocking layer is interposed between the semiconductor layer and the insulating layer, the electrons or holes injected into the semiconductor layer can be prevented from being trapped in the insulating layer, thereby suppressing hysteresis characteristic. In addition, a reliable flat panel display device can be manufactured using the thin film transistor.
    Type: Application
    Filed: January 9, 2006
    Publication date: July 20, 2006
    Inventors: Min--Chul Suh, Myeong-Seob So, Jae-Bon Koo, Nam-Choul Yang
  • Publication number: 20050110017
    Abstract: The invention is directed to a thin film transistor (TFT) that modulates a threshold voltage in a simple manner. In one embodiment a TFT of the present invention also reduces a leakage current in an off state, and guarantees a sufficient threshold voltage margin and a flat panel display having the same are provided. The TFT includes a semiconductor thin film having a channel area and n-type or p-type impurity-doped source and drain areas. A gate electrode is formed in a position corresponding to the channel area. The TFT further includes gate insulating layer, which insulates the semiconductor thin film and the gate electrode. Source and drain electrodes are connected to each of the source and drain areas of the semiconductor thin film. In a TFT configured in this manner, a threshold voltage is modulated by changing a work function difference between the gate electrode and the semiconductor thin film.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 26, 2005
    Inventors: Myeong-Seob So, Byoung-Deog Choi
  • Publication number: 20050082530
    Abstract: A thin film transistor of the present invention comprises, an active layer formed on an insulating substrate and having a channel region and source/drain regions; a gate electrode formed corresponding to the channel region of the active region; a body contact region separately formed with the source/drain regions in the active layer; source/drain electrodes each connected to the source/drain regions; and a conductive wiring for connecting the body contact region and the gate electrode.
    Type: Application
    Filed: October 8, 2004
    Publication date: April 21, 2005
    Inventors: Jae-Bon Koo, Byoung-Deog Choi, Myeong-Seob So, Won-Sik Kim
  • Publication number: 20050035343
    Abstract: A TFT including a gate metallic layer, a body layer doped with a dopant having a first polarity, a source layer and a drain layer doped with a dopant having a second polarity, a semiconductor layer formed between the source layer and the drain layer, and a contact coupling the gate metallic layer and the body layer.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 17, 2005
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Byoung-Deog Choi, Won-Sik Kim, Myeong-Seob So
  • Patent number: 6727659
    Abstract: An apparatus for driving a plasma display panel that includes first and second signal lines for supplying first and second voltages, respectively, and first and second inductors coupled to one terminal of a panel capacitor. A first current path is formed from the panel capacitor to the second signal line via the second inductor to drop the voltage of the panel capacitor from the first voltage to the second voltage. A second current path is formed to recover the current flowing to the second inductor towards the first signal line, while the voltage of the panel capacitor is sustained at the second voltage. A third current path is formed from the first signal line to the panel capacitor via the first inductor while the current flowing to the second inductor is recovered, to raise the voltage of the panel capacitor from the second voltage to the first voltage.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: April 27, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Yeol Kim, Jin-Sung Kim, Jun-Hyung Kim, Kazuhiro Ito, Myeong-Seob So
  • Publication number: 20040046756
    Abstract: A PDP address driver circuit includes: an inductor coupled to a conductive pattern. A first current applier applyies a current of a first direction to the inductor and the conductive pattern while sustaining a panel capacitor at an address voltage. A discharger generates a resonance between the inductor and the panel capacitor to discharge the panel capacitor to 0V, while the current of the first direction flows to the inductor and the conductive pattern. A second current applier applyies a current of a second direction to the inductor and the conductive pattern while sustaining the panel capacitor at 0V. A charger generates a resonance between the inductor and the panel capacitor to charge the panel capacitor to the address voltage, while the current of the second direction flows to the inductor and the conductive pattern.
    Type: Application
    Filed: May 23, 2003
    Publication date: March 11, 2004
    Inventors: Jun-Hyung Kim, Jin-Sung Kim, Myeong-Seob So, Nam-Sung Jung