Patents by Inventor Beom-Rak Choi

Beom-Rak Choi 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: 20050127828
    Abstract: An organic light emitting display is provided, which includes: a first electrode formed on a substrate; a partition having an opening exposing the first electrode at least in part; an auxiliary electrode formed on the partition and having substantially the same planar shape as the partition; an organic light emitting member formed on the first electrode and disposed substantially in the opening; and a second electrode formed on the light emitting member and the auxiliary electrode.
    Type: Application
    Filed: November 29, 2004
    Publication date: June 16, 2005
    Inventors: Jin-Koo Chung, Joon-Hoo Choi, Beom-Rak Choi
  • Publication number: 20050104814
    Abstract: Disclosed are an active matrix type organic electroluminescent display device and a manufacturing method thereof. At least two capacitors having different functions from each other are disposed in a vertically stacked structure within a unit pixel region. When a compensation circuit needing two or more capacitors having different functions from each other per pixel is applied, the two or more capacitors are vertically stacked, thereby preventing the aperture ratio from being lowered due to the increase in the number of capacitors within the pixel.
    Type: Application
    Filed: December 10, 2002
    Publication date: May 19, 2005
    Inventors: Beom-Rak Choi, Joon-Hoo Choi, Chong-Chul Chai
  • Publication number: 20050014379
    Abstract: An electro-luminescence device including an electro-luminescence element and a thin film transistor electrically connected to the electro-luminescence element. The thin film transistor includes a gate electrode formed over a substrate, an insulating layer formed over the gate electrode, and a first semiconductor pattern formed over the insulating layer. An etch stop layer is formed over the first semiconductor layer. A second semiconductor pattern is formed over the etch stop layer at one side of the etch stop layer, and a third semiconductor pattern is formed over the etch stop layer at another side of the etch stop layer. A source electrode is formed over the second semiconductor pattern, and a drain electrode is formed over the third semiconductor pattern.
    Type: Application
    Filed: January 21, 2004
    Publication date: January 20, 2005
    Inventors: Joon-Hoo Choi, In-Su Joo, Beom-Rak Choi, Jong-Moo Huh
  • Publication number: 20040145304
    Abstract: There are provided an organic EL device and a method of fabricating the same. An effective display area on which an anode electrode, an organic luminescence layer and a cathode electrode are formed is sealed by means of a metal can, a glass cap or an organic/inorganic material. A power source is applied to the anode and the cathode electrodes through a power transferring part extended from the effective display area to a non-effective display area. Accordingly, it is possible to reduce the oxidation of the cathode electrode of the organic EL device, thereby preventing the electrical contact characteristics of the cathode electrode from being deteriorated.
    Type: Application
    Filed: October 31, 2003
    Publication date: July 29, 2004
    Inventors: Joon-Hoo Choi, Beom-Rak Choi, Chong-Chul Chai, Jin-Koo Chung
  • Publication number: 20040125101
    Abstract: There are provided an organic El device and a method of fabricating the same. Each of anode electrodes includes an organic luminescence layer disposed thereon, and a cathode electrode separately disposed on each of the organic luminescence layers. Each cathode electrode receives a power source suitable for operation properties of each of the organic luminescence layers. Accordingly, an improved image may be displayed in a full-color display.
    Type: Application
    Filed: October 24, 2003
    Publication date: July 1, 2004
    Inventors: Joon-Hoo Choi, Beom-Rak Choi, Chong-Chul Chai, Jin-Koo Chung
  • Publication number: 20030155860
    Abstract: Disclosed is an active matrix type organic electroluminescent display and method of manufacturing the same. A black matrix is formed on substantially an entire surface of a substrate except for a portion on which a pixel electrode region is formed. The substrate includes metal interconnections for driving thin film transistors, a pixel electrode connected with the thin film transistors and an organic electroluminescent layer formed on the pixel electrode. By the above structure, reflection of an external light from a non-luminescent region except for the pixel electrode is minimized to thereby obtain a high contrast ratio.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 21, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Beom-Rak Choi, Joon-Hoo Choi