Patents by Inventor Se-gi Yu

Se-gi Yu 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: 8044581
    Abstract: An inorganic field emission device includes a first electrode, a second electrode spaced apart from the first electrode, and a light emitting layer disposed therebetween. A dielectric layer is disposed between the first electrode and the light emitting layer and/or between the second electrode and the light emitting layer. A field reinforcing layer is disposed between a dielectric layer and the light emitting layer and includes carbon nanotubes having a length of about 20 nanometers to about 1 micrometer.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: October 25, 2011
    Assignees: Samsung Electronics Co., Ltd., Hankuk University of Foreign Studies Research and Industry-University Cooperation Foundation
    Inventors: Shang-hyeun Park, Se-gi Yu, Jin-Young Kim, Min-jong Bae, Tae-won Jeong
  • Patent number: 7824936
    Abstract: Disclosed herein is a method of preparing a low resistance metal line, is a method of manufacturing a dispersion type AC inorganic electroluminescent device and a dispersion type AC inorganic electroluminescent device manufactured thereby, in which a light-emitting layer and a dielectric layer between a lower electrode and an upper electrode are simultaneously formed through a single process using spin coating, thereby simplifying the overall manufacturing process and decreasing the manufacturing cost, and furthermore, the contact interface between the light-emitting layer and the dielectric layer is increased, therefore increasing the brightness of the device.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shang Hyeun Park, Tae Won Jeong, Se Gi Yu, Min Jong Bae
  • Publication number: 20100270918
    Abstract: An inorganic field emission device includes a first electrode, a second electrode spaced apart from the first electrode, and a light emitting layer disposed therebetween. A dielectric layer is disposed between the first electrode and the light emitting layer and/or between the second electrode and the light emitting layer. A field reinforcing layer is disposed between a dielectric layer and the light emitting layer and includes carbon nanotubes having a length of about 20 nanometers to about 1 micrometer.
    Type: Application
    Filed: October 19, 2009
    Publication date: October 28, 2010
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Hankuk University of Foreign Studies Research and Industry-University Cooperation Foundation
    Inventors: Shang-hyeun PARK, Se-gi YU, Jin-Young KIM, Min-jong BAE, Tae-won JEONG
  • Publication number: 20090023233
    Abstract: Disclosed herein is a method of preparing a low resistance metal line, is a method of manufacturing a dispersion type AC inorganic electroluminescent device and a dispersion type AC inorganic electroluminescent device manufactured thereby, in which a light-emitting layer and a dielectric layer between a lower electrode and an upper electrode are simultaneously formed through a single process using spin coating, thereby simplifying the overall manufacturing process and decreasing the manufacturing cost, and furthermore, the contact interface between the light-emitting layer and the dielectric layer is increased, therefore increasing the brightness of the device.
    Type: Application
    Filed: January 18, 2008
    Publication date: January 22, 2009
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY UNIVERSITY COOPERATION FOUNDATION HANKUK UNIVERSITY OF FOREIGN STUDIES
    Inventors: Shang Hyeun PARK, Tae Won JEONG, Se Gi YU, Min Jong BAE
  • Patent number: 7078007
    Abstract: A carbon nanotube manufacturing method is provided. In the carbon nanotube manufacturing method, carbon nanoparticles are dispersed in a strong acid solution and heated at a predetermined temperature under reflux to form carbon nanotubes from the carbon nanoparticles. The carbon nanotubes can be simply produced on a mass-scale at low costs by using the strong acid solution.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: July 18, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-gi Yu, Whi-kun Yi, Jeong-hee Lee, Yong-wan Jin, Tae-won Jeong
  • Patent number: 7025652
    Abstract: An electron amplifier and a method of manufacturing the same are provided. The electron amplifier includes a substrate in which a plurality of through holes are formed, a resistive layer deposited on the sidewalls of the through holes, an electron emissive layer including carbon nanotubes which is deposited on the resistive layer, and an electrode layer formed on each of the upper and lower sides of the substrate. Because the electron emissive layer of the electron amplifier is uniform and provides a high electron emission efficiency, the electron amplification efficiency is improved. The electron amplifier manufacturing method enables economical mass production of electron amplifiers.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: April 11, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-na Heo, Whi-kun Yi, Jeong-hee Lee, Se-gi Yu, Tae-won Jeong, Chang-soo Lee
  • Publication number: 20050200254
    Abstract: An electron amplifier and a method of manufacturing the same are provided. The electron amplifier includes a substrate in which a plurality of through holes are formed, a resistive layer deposited on the sidewalls of the through holes, an electron emissive layer including carbon nanotubes which is deposited on the resistive layer, and an electrode layer formed on each of the upper and lower sides of the substrate. Because the electron emissive layer of the electron amplifier is uniform and provides a high electron emission efficiency, the electron amplification efficiency is improved. The electron amplifier manufacturing method enables economical mass production of electron amplifiers.
    Type: Application
    Filed: February 4, 2005
    Publication date: September 15, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jung-na Heo, Whi-kun Yi, Jeong-hee Lee, Se-gi Yu, Tae-won Jeong, Chang-soo Lee
  • Patent number: 6903500
    Abstract: A field emitter device including carbon nanotubes each of which has a protective membrane is provided. The protective membrane is formed of a nitride, a carbide, or an oxide. Suitable nitrides for the protective membrane include boron nitride, aluminum nitride, boron carbon nitride, and gallium nitride. The protective membrane protects the carbon nanotubes from damage due to arcing or an unnecessary remaining gas and thus improves field emission characteristics and stability of the field emitter device.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: June 7, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-won Jeong, Ji-beom Yoo, Whi-kun Yi, Jeong-hee Lee, Se-gi Yu, Chang-soo Lee, Jung-na Heo
  • Patent number: 6870308
    Abstract: An electron amplifier and a method of manufacturing the same are provided. The electron amplifier includes a substrate in which a plurality of through holes are formed, a resistive layer deposited on the sidewalls of the through holes, an electron emissive layer including carbon nanotubes which is deposited on the resistive layer, and an electrode layer formed on each of the upper and lower sides of the substrate. Because the electron emissive layer of the electron amplifier is uniform and provides a high electron emission efficiency, the electron amplification efficiency is improved. The electron amplifier manufacturing method enables economical mass production of electron amplifiers.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 22, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-na Heo, Whi-kun Yi, Jeong-hee Lee, Se-gi Yu, Tae-won Jeong, Chang-soo Lee
  • Publication number: 20030173884
    Abstract: An electron amplifier and a method of manufacturing the same are provided. The electron amplifier includes a substrate in which a plurality of through holes are formed, a resistive layer deposited on the sidewalls of the through holes, an electron emissive layer including carbon nanotubes which is deposited on the resistive layer, and an electrode layer formed on each of the upper and lower sides of the substrate. Because the electron emissive layer of the electron amplifier is uniform and provides a high electron emission efficiency, the electron amplification efficiency is improved. The electron amplifier manufacturing method enables economical mass production of electron amplifiers.
    Type: Application
    Filed: February 20, 2003
    Publication date: September 18, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jung-na Heo, Whi-kun Yi, Jeong-hee Lee, Se-gi Yu, Tae-won Jeong, Chang-soo Lee
  • Publication number: 20030141179
    Abstract: A carbon nanotube manufacturing method is provided. In the carbon nanotube manufacturing method, carbon nanoparticles are dispersed in a strong acid solution and heated at a predetermined temperature under reflux to form carbon nanotubes from the carbon nanoparticles. The carbon nanotubes can be simply produced on a mass-scale at low costs by using the strong acid solution.
    Type: Application
    Filed: January 30, 2003
    Publication date: July 31, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Se-Gi Yu, Whi-Kun Yi, Jeong-Hee Lee, Yong-Wan Jin, Tae-Won Jeong
  • Publication number: 20030127960
    Abstract: A field emitter device including carbon nanotubes each of which has a protective membrane is provided. The protective membrane is formed of a nitride, a carbide, or an oxide. Suitable nitrides for the protective membrane include boron nitride, aluminum nitride, boron carbon nitride, and gallium nitride. The protective membrane protects the carbon nanotubes from damage due to arcing or an unnecessary remaining gas and thus improves field emission characteristics and stability of the field emitter device.
    Type: Application
    Filed: January 8, 2003
    Publication date: July 10, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Tae-Won Jeong, Ji-Beom Yoo, Whi-Kun Yi, Jeong-Hee Lee, Se-Gi Yu, Chang-Soo Lee, Jung-Na Heo
  • Patent number: 6346775
    Abstract: A secondary electron amplification structure employing carbon nanotube and a plasma display panel and back light using the same are provided. The secondary electron amplification structure is formed by stacking a MgO film, a film of a fluoride such as MgF2, CaF2 or LiF, or a film of an oxide such as Al2O3, ZnO, CaO, SrO, SiO2 or La2O3 on a carbon nanotube (CNT), which functions to increase the secondary electron emission coefficient caused by electrons or ions.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: February 12, 2002
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Won-tae Lee, Wong-bong Choi, In-taek Han, Jeong-hee Lee, Se-gi Yu