Patents by Inventor Jae-Sang Ha

Jae-Sang Ha 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: 20120327326
    Abstract: A field emission panel includes a cathode electrode which is formed on a substrate, a multilayered carbon nano tube which is formed on the cathode electrode, and a gate electrode which is positioned at a distance from the multilayered carbon nano tube. The multilayered carbon nano tube has a minimum thermal decomposition temperature higher than a temperature of a heating process which is performed when the field emission panel is manufactured, and has three peaks of Raman scattered light in a Raman intensity distribution characteristic.
    Type: Application
    Filed: December 23, 2011
    Publication date: December 27, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwang-jong SUH, Jae-sang HA
  • Patent number: 7960903
    Abstract: An electron emission source-forming composition includes a carbon-based material; a vehicle composed of a resin component and a solvent component; and at least one metal oxide with an average particle diameter in a range of 100 to 1,000 nm selected from Al2O3, TiO2, and SiO2. The electron emission source-forming composition is sintered under an air atmosphere during electron emission source formation. Therefore, carbon deposits after sintering and degradation of Carbon Nano-Tubes (CNTs) upon sintering can be remarkably reduced. As a result, the electron emission source formed using the composition has a high current density and the electron emission device using the electron emission source exhibits enhanced reliability.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: June 14, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Mee-Ae Ryu, Jong-Hwan Park, Jae-Sang Ha, Jeong-Hee Lee
  • Patent number: 7855500
    Abstract: An electron emission display that can mitigate or prevent problems of an arc discharge and a wire disconnection due to increases in resistance at portions where a sealing member contacts electrodes includes: an electron emission device on which upper surfaces of electrodes are exposed, a front panel that is disposed in front of the electron emission device, the front panel being of a phosphor material, and a sealing member that seals a space formed by the electron emission device and the front panel by being disposed on the edges of the space in contact with the electrodes. The electrodes are formed on an entire surface of the electron emission device with a narrow width at an end portion of the electron emission device where the electrodes are connected to an external power source, and the sealing member contacts the electrodes closer to the space than end portions of the electrodes where the width of the electrodes is narrowed.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: December 21, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jae-Sang Ha
  • Patent number: 7798882
    Abstract: Provided is a method of manufacturing an electron emission device. The method includes: forming electron emission sources including a carbon-based material; and emitting electrons from the electron emission sources in a chamber containing a gas. Accordingly, an electron emission display device employing the electron emission device can improve uniformity between pixels and increase device lifespan.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: September 21, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myung-Ick Hwang, Sung-Hee Cho, Jae-Sang Ha, Jong-Hwan Park, Deok-Hyeon Choe, Nae-Sung Lee, Jun-Seop Kim, Ji-Hyun Jeon
  • Patent number: 7719179
    Abstract: An electron emission display device comprises: a front panel which includes a front substrate, an anode electrode formed on a surface of the front substrate, and a fluorescent layer; a rear panel which includes a rear substrate disposed facing the front substrate at a predetermined distance, electron emitters formed on the rear substrate, and at least one driving electrode that controls the emission of electrons from the electron emitters; a sealing member which seals the front and rear panels; and at least one dielectric layer included in the sealing member and having a dielectric constant less than that of the sealing member.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: May 18, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jae-Sang Ha
  • Publication number: 20090189508
    Abstract: A backlight unit includes a base substrate and a first electrode which is formed on the base substrate in a line. An electron emission layer is formed on the first electrode in the substantially same pattern as the first electrode. A second electrode supporter is formed on the base substrate and disposed on sides of the first electrode and the electron emission layer. A second electrode is formed on the second electrode supporter and has an aperture pattern. A third electrode is formed on the front substrate for accelerating electrons emitted from the electron emission layer. A phosphor layer is formed on the third electrode responsive to electrons accelerated by the third electrode.
    Type: Application
    Filed: December 22, 2008
    Publication date: July 30, 2009
    Inventors: Jae-Sang Ha, Sang-Jin Lee
  • Publication number: 20080036359
    Abstract: Provided is a method of manufacturing an electron emission device. The method includes: forming electron emission sources including a carbon-based material; and emitting electrons from the electron emission sources in a chamber containing a gas. Accordingly, an electron emission display device employing the electron emission device can improve uniformity between pixels and increase device lifespan.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 14, 2008
    Inventors: Myung-Ick Hwang, Sung-Hee Cho, Jae-Sang Ha, Jong-Hwan Park, Deok-Hyeon Choe, Nae-Sung Lee, Jun-Seop Kim, Ji-Hyun Jeon
  • Publication number: 20070252510
    Abstract: An electron emission display that can mitigate or prevent problems of an arc discharge and a wire disconnection due to increases in resistance at portions where a sealing member contacts electrodes includes: an electron emission device on which upper surfaces of electrodes are exposed, a front panel that is disposed in front of the electron emission device, the front panel being of a phosphor material, and a sealing member that seals a space formed by the electron emission device and the front panel by being disposed on the edges of the space in contact with the electrodes. The electrodes are formed on an entire surface of the electron emission device with a narrow width at an end portion of the electron emission device where the electrodes are connected to an external power source, and the sealing member contacts the electrodes closer to the space than end portions of the electrodes where the width of the electrodes is narrowed.
    Type: Application
    Filed: March 7, 2007
    Publication date: November 1, 2007
    Inventor: Jae-Sang Ha
  • Patent number: 7235919
    Abstract: An electron emission device includes a cathode substrate and an anode substrate facing each other that are separated from each other by a predetermined distance to form a vacuum vessel. An electron emission unit is disposed on the cathode substrate to emit electrons, and a light emission unit is disposed on the anode substrate to emit light caused by the electrons for displaying desired images. In more detail, a gate electrode is arranged on the cathode substrate to correspond to the center of a pixel area of the electron emission device, a cathode electrode is arranged on an outer portion of the gate electrode while insulated from the gate electrode, and an electron emission region is arranged on the cathode electrode.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: June 26, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jae-Sang Ha
  • Patent number: 7157849
    Abstract: A field emission display device includes: a first substrate; an electron emission assembly arranged on the first substrate; a second substrate arranged a predetermined distance from the first substrate, the first and second substrates forming a vacuum space; an illumination assembly arranged on the second substrate, the illumination assembly being illuminated by electrons emitted from the electron emission assembly; and a mesh grid and above the electron emission assembly.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: January 2, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyeong-Rae Seon, Cheol-Hyeon Chang, Dong-Su Chang, Dong-Wook Kim, Jae-Sang Ha
  • Publication number: 20060255297
    Abstract: An electron emission source including a carbon-based material and a UV shielding material, a method of preparing the same, and an electron emission device using the electron emission source are provided. The UV shielding material is added to an electron emission source forming composition to more easily control the sharpness of an electron emission source tip. The electron emission source composition may include a carbon-based material, a vehicle including a resin and a solvent, and a UV shielding material.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 16, 2006
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jong-Woon Moon, Sung-Hee Cho, Jae-Sang Ha
  • Publication number: 20060197429
    Abstract: An electron emission source-forming composition includes a carbon-based material; a vehicle composed of a resin component and a solvent component; and at least one metal oxide with an average particle diameter in a range of 100 to 1,000 nm selected from Al2O3, TiO2, and SiO2. The electron emission source-forming composition is sintered under an air atmosphere during electron emission source formation. Therefore, carbon deposits after sintering and degradation of Carbon Nano-Tubes (CNTs) upon sintering can be remarkably reduced. As a result, the electron emission source formed using the composition has a high current density and the electron emission device using the electron emission source exhibits enhanced reliability.
    Type: Application
    Filed: February 27, 2006
    Publication date: September 7, 2006
    Inventors: Mee-Ae Ryu, Jong-Hwan Park, Jae-Sang Ha, Jeong-Hee Lee
  • Publication number: 20050269928
    Abstract: An emitter for a field emission device (FED) designed to increase durability by interposing an ultraviolet (UV) transmissive resistive layer between a substrate and an emitter and a method for fabricating the same. The method includes depositing a transparent electrode on a transparent substrate, forming a resistive layer by stacking an ultraviolet (UV) transmissive resistive material on the transparent electrode, forming an emitter layer by stacking a carbon nanotube (CNT) on the UV transmissive resistive material, and patterning the emitter layer according to a predetermined emitter pattern.
    Type: Application
    Filed: June 1, 2005
    Publication date: December 8, 2005
    Inventors: Won-Seok Kim, Jae-Sang Ha, Jeong-Hee Lee, Tae-Won Jeong, Byung-Yun Kong
  • Publication number: 20050245117
    Abstract: An electron emission display device comprises: a front panel which includes a front substrate, an anode electrode formed on a surface of the front substrate, and a fluorescent layer; a rear panel which includes a rear substrate disposed facing the front substrate at a predetermined distance, electron emitters formed on the rear substrate, and at least one driving electrode that controls the emission of electrons from the electron emitters; a sealing member which seals the front and rear panels; and at least one dielectric layer included in the sealing member and having a dielectric constant less than that of the sealing member.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 3, 2005
    Inventor: Jae-Sang Ha
  • Publication number: 20050184649
    Abstract: An electron emission device includes a cathode substrate and an anode substrate facing each other that are separated from each other by a predetermined distance to form a vacuum vessel. An electron emission unit is disposed on the cathode substrate to emit electrons, and a light emission unit is disposed on the anode substrate to emit light caused by the electrons for displaying desired images. In more detail, a gate electrode is arranged on the cathode substrate to correspond to the center of a pixel area of the electron emission device, a cathode electrode is arranged on an outer portion of the gate electrode while insulated from the gate electrode, and an electron emission region is arranged on the cathode electrode.
    Type: Application
    Filed: February 24, 2005
    Publication date: August 25, 2005
    Inventor: Jae-Sang Ha
  • Publication number: 20040145298
    Abstract: A field emission display device includes: a first substrate; an electron emission assembly arranged on the first substrate; a second substrate arranged a predetermined distance from the first substrate, the first and second substrates forming a vacuum space; an illumination assembly arranged on the second substrate, the illumination assembly being illuminated by electrons emitted from the electron emission assembly; and a mesh grid and above the electron emission assembly.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Inventors: Hyeong-Rae Seon, Cheol-Hyeon Chang, Dong-Su Chang, Dong-Wook Kim, Jae-Sang Ha