Patents by Inventor Seong-Deok Ahn

Seong-Deok Ahn 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: 20080123177
    Abstract: Provided are an electrophoretic display device and a manufacturing method thereof, and more specifically, electrophoretic e-paper to which a high-k dielectric material is applied in order to improve a reaction rate. The electrophoretic display device of the present invention comprises a plurality of capsules comprising a dielectric fluid and at least one type of particles individually operating in response to an applied electric field and suspended in the dielectric fluid; first and second substrates respectively formed on and below the capsules and having electrodes formed thereon; and a dielectric layer formed on at least one of the first and second substrates to be in contact with the capsules.
    Type: Application
    Filed: October 25, 2007
    Publication date: May 29, 2008
    Inventors: In Kyu You, Seung Youl Kang, Chul Am Kim, Seong Deok Ahn, Gi Heon Kim, Ji Young Oh, Kyung Soo Suh
  • Publication number: 20080063795
    Abstract: Provided is an insulating layer in which an inorganic material is added to an organic polymer to thereby improve the insulating properties, an organic thin film transistor using the insulating layer, and a method of fabricating the organic thin film transistor. An insulating layer for an organic thin film transistor including a vinyl polymer and an inorganic material is provided. Here, a weight ratio of the vinyl polymer to the inorganic material may be in the range of 1:0.0001 to 1:0.5. Accordingly, it is possible to fabricate a thin film at low temperature and, further, to fabricate an insulating layer having a high-dielectric constant, not affecting other layers formed in the previous processes during the formation of the insulating layer.
    Type: Application
    Filed: July 25, 2007
    Publication date: March 13, 2008
    Inventors: Gi Heon KIM, Sung Min YOON, Kyu Ha BAEK, In Kyu YOU, Seung Youl KANG, Seong Deok AHN, Kyung Soo SUH
  • Patent number: 7292222
    Abstract: An electrophoretic display and a method of manufacturing the electrophoretic display are provided. The electrophoretic display includes an lower electrode formed on an under layer, an lower electrode protection layer formed on the lower electrode, an insulating template formed on the lower electrode protection layer and having a plurality of holes of smaller size than the wavelength of visible rays region, a dielectric fluid filling the holes and having a color, a plurality of charged particles suspended in the dielectric fluid filling each of the plurality of holes having a color different from the color of the dielectric fluid, and an upper electrode formed on the insulating template in sequential order. Accordingly, a problem of agglomeration of the charged particles can be solved by the insulating template having holes of smaller size than the wavelength of visible rays region, and thus a reliable electrophoretic display emitting light of one color or natural colors is achieved.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: November 6, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Deok Ahn, Kyung Soo Suh, Seung Youl Kang, Yong Eui Lee, Chul Am Kim, Meyoung Ju Joung, Mi Kyung Kim, Gun Hong Lee
  • Publication number: 20070085071
    Abstract: Provided are a low temperature-cured polymer gate insulation layer and an organic thin film transistor having the same. The gate insulation layer includes an acrylate-based compound, an anhydride-based compound, and an epoxy-based compound each by 0.1 weight % or more.
    Type: Application
    Filed: February 15, 2006
    Publication date: April 19, 2007
    Inventors: Gi Heon Kim, Sung Min Yoon, In Kyu You, Seung Youl Kang, Seong Deok Ahn, Kyu Ha Baek, Kyung Soo Suh
  • Publication number: 20060097249
    Abstract: Provided are a composition for thermosetting organic polymeric gate insulating layer and an organic thin film transistor using the same. The composition for thermosetting organic polymeric gate insulating layer contains a thermosetting material in polyvinyl phenol as an organic polymeric gate insulating layer material, to improve a chemical resistance and an insulating property, and an organic thin film transistor includes a thermosetting organic polymeric gate insulating layer formed of the composition. The composition for thermosetting organic polymeric gate insulating layer endows an organic polymer with a thermosetting property, thereby being capable of improving the chemical resistance and the insulating property as well as of forming a layer having a device property improved.
    Type: Application
    Filed: August 16, 2005
    Publication date: May 11, 2006
    Inventors: Gi Heon Kim, Sung Min Yoon, In Kyu You, Seung Youl Kang, Seong Deok Ahn, Kyu Ha Baek, Kyung Soo Suh
  • Patent number: 6980351
    Abstract: An electrophoretic display utilizing a phenomenon of electrophoresis is provided. The electrophoretic display includes an lower electrode located on an under layer, an lower electrode protection layer formed on the lower electrode, a plurality of microcapsules located on the lower electrode protection layer, coated or encapsulated in a micro size and not operating in an electric field, a particle and/or a fluid included within the microcapsule and having a single visual color, a charged particle existed among the plurality of microcapsules, having different visual colors, operating according to an electric field and suspended in a dielectric fluid, and an upper electrode protection layer and an upper electrode located on the plurality of microcapsule in sequential order. Accordingly, a reliable electrophoretic display with one color or natural colors is achieved.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: December 27, 2005
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong-Deok Ahn, Yong Eui Lee, Seung-Youl Kang, Kyung-Soo Suh
  • Patent number: 6812635
    Abstract: The present invention relates to a cathode for use in a field emission device. In a triode-type cathode for use in an electron emission device being a core component constituting a field emission device, the present invention includes forming a catalytic layer at the sidewall of a gate hole and then growing an emitter in the catalytic layer, thus uniformly distributing an electric field generated by a voltage applied to a gate electrode over the emitter. Therefore, the present invention can improve the brightness contrast at a low anode voltage and also can control electrons emitted from the emitter only with the gate voltage.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: November 2, 2004
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Rae Cho, Do Hyung Kim, Seong Deok Ahn, Yoon Ho Song, Jin Ho Lee, Kyoung Ik Cho
  • Publication number: 20040137606
    Abstract: The present invention relates to the transmissive programmable mask for forming biomolecules such as DNA or polymer array by irradiating specific cells with incident lights, and to the method for forming the biomolecules or polymer array using the same.
    Type: Application
    Filed: November 10, 2003
    Publication date: July 15, 2004
    Inventors: Moon Youn Jung, Dong Ho Shin, Hae Sik Yang, Yong Shin Kim, Tae Hwan Yoon, Chi Hoon Jun, Yun Tae Kim, Seung Youl Kang, Yong Eui Lee, Seong Deok Ahn, Kyung Soo Suh
  • Publication number: 20040090162
    Abstract: The present invention relates to a field emission device including a silicon substrate having an emitter electrode formed in a surface portion thereof, an insulating layer formed on the emitter electrode and having a nano hole to expose the emitter electrode. An emitter is formed on the emitter electrode exposed through the nano hole. A gate electrode is formed on the insulating layer. The present invention can reduce the driving voltage and thus lower the power consumption.
    Type: Application
    Filed: October 30, 2003
    Publication date: May 13, 2004
    Inventors: Seong Deok Ahn, Jin Ho Lee, Kyoung Ik Cho
  • Publication number: 20040085285
    Abstract: An electrophoretic display and a method of manufacturing the electrophoretic display are provided. The electrophoretic display includes an lower electrode formed on an under layer, an lower electrode protection layer formed on the lower electrode, an insulating template formed on the lower electrode protection layer and having a plurality of holes of smaller size than the wavelength of visible rays region, a dielectric fluid filling the holes and having a color, a plurality of charged particles suspended in the dielectric fluid filling each of the plurality of holes having a color different from the color of the dielectric fluid, and an upper electrode formed on the insulating template in sequential order. Accordingly, a problem of agglomeration of the charged particles can be solved by the insulating template having holes of smaller size than the wavelength of visible rays region, and thus a reliable electrophoretic display emitting light of one color or natural colors is achieved.
    Type: Application
    Filed: October 14, 2003
    Publication date: May 6, 2004
    Inventors: Seong Deok Ahn, Kyung Soo Suh, Seung Youl Kang, Yong Eui Lee, Chul Am Kim, Meyoung Ju Joung, Mi Kyung Kim, Gun Hong Lee
  • Patent number: 6729923
    Abstract: The present invention relates to a field emission device and a method of fabricating the same. The method includes forming a hole having a nanometer size using silicon semiconductor process and then forming an emitter within the hole to form a field emission device. Therefore, the present invention can reduce the driving voltage and thus lower the power consumption.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: May 4, 2004
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Deok Ahn, Jin Ho Lee, Kyoung Ik Cho
  • Publication number: 20040062862
    Abstract: Provided are an apparatus and method using large-area organic vapor phase deposition for formation of organic thin films and organic devices. The apparatus includes a deposition part and a source part. The deposition part includes a process chamber; a substrate holder installed in the process chamber for supporting a loaded substrate; a substrate temperature controller installed in the substrate holder for controlling the temperature of the substrate; and a shower head installed opposite the substrate holder in the process chamber for uniformly distributing onto the substrate organic source vapors to be used for a deposition reaction.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 1, 2004
    Inventors: Seong Deok Ahn, Yong Eui Lee, Seung Youl Kang, Kyung Soo Suh, Mi Kyung Kim, Meyoung Ju Joung, Chul Am Kim, Myoung Ki Lee, Young Kyoo Jee
  • Publication number: 20040027642
    Abstract: An electrophoretic display utilizing a phenomenon of electrophoresis is provided. The electrophoretic display includes an lower electrode located on an under layer, an lower electrode protection layer formed on the lower electrode, a plurality of microcapsules located on the lower electrode protection layer, coated or encapsulated in a micro size and not operating in an electric field, a particle and/or a fluid included within the microcapsule and having a single visual color, a charged particle existed among the plurality of microcapsules, having different visual colors, operating according to an electric field and suspended in a dielectric fluid, and an upper electrode protection layer and an upper electrode located on the plurality of microcapsule in sequential order. Accordingly, a reliable electrophoretic display with one color or natural colors is achieved.
    Type: Application
    Filed: December 31, 2002
    Publication date: February 12, 2004
    Inventors: Seong-Deok Ahn, Yong-Eui Lee, Seung-Youl Kang, Kyung-Soo Suh
  • Publication number: 20030122466
    Abstract: The present invention relates to a field emission device and a method of fabricating the same. The method includes forming a hole having a nanometer size using silicon semiconductor process and then forming an emitter within the hole to form a field emission device. Therefore, the present invention can reduce the driving voltage and thus lower the power consumption.
    Type: Application
    Filed: May 30, 2002
    Publication date: July 3, 2003
    Inventors: Seong Deok Ahn, Jin Ho Lee, Kyoung Ik Cho
  • Publication number: 20030122467
    Abstract: The present invention relates to a cathode for use in a field emission device. In a triode-type cathode for use in an electron emission device being a core component constituting a field emission device, the present invention includes forming a catalytic layer at the sidewall of a gate hole and then growing an emitter in the catalytic layer, thus uniformly distributing an electric field generated by a voltage applied to a gate electrode over the emitter. Therefore, the present invention can improve the brightness contrast at a low anode voltage and also can control electrons emitted from the emitter only with the gate voltage.
    Type: Application
    Filed: June 24, 2002
    Publication date: July 3, 2003
    Inventors: Young Rae Cho, Do Hyung Kim, Seong Deok Ahn, Yoon Ho Song, Jin Ho Lee, Kyoung Ik Cho
  • Publication number: 20030122133
    Abstract: The present invention relates to a semiconductor device using a single carbon nanotube and a method of manufacturing the same. In a process of manufacturing a bipolar transistor using a p-n junction, a given region of a single carbon nanotube of a N type is exposed by means of a common semiconductor manufacturing process and the exposed portion of a carbon nanotube of a P type is then made to be a carbon a single carbon nanotube of a N type by means of a doping process, thus forming a P-N-P or N-P-N bipolar transistor. Therefore, the present invention can improve the integration degree and the operating speed of the device.
    Type: Application
    Filed: May 20, 2002
    Publication date: July 3, 2003
    Inventors: Sung Yool Choi, Yong Sung Yoon, Seong Deok Ahn, Yoon Ho Song, Jin Ho Lee, Kyoung Ik Cho