Patents by Inventor Sung-joon Han

Sung-joon Han 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: 20250050336
    Abstract: A pattern electrode structure for an electrowetting device is laminated between a base material and a dielectric layer of the electrowetting device, and the pattern electrode structure includes first branch electrodes formed in a direction perpendicular to any plane perpendicular to a plane defined by the pattern electrode structure, and a basal pattern electrode formed in an area below lower ends of the first branch electrodes and connected to an electrode connection portion configured to receive a voltage, in which a sum of an interval between the first branch electrode and the basal pattern electrode and a width of the basal pattern electrode is larger than a diameter of a droplet to be removed, thereby preventing the droplet from stagnating without falling at the terminal end of the pattern in a structure that uses the vertical pattern.
    Type: Application
    Filed: October 19, 2023
    Publication date: February 13, 2025
    Inventors: Kwang-Joon Han, Yu-Bin Jeon, Byung-Kyu Cho, Sung-Hun Han, Hong-Jun Cha, Young-Ern Jung
  • Publication number: 20250053000
    Abstract: An embodiment pattern electrode structure for an electrowetting device includes a first branch electrode disposed in a direction perpendicular to any plane that is perpendicular to a plane defined by the pattern electrode structure and a basal pattern electrode disposed in an area above an upper end of the first branch electrode and connected to an electrode connection portion configured to receive a voltage, wherein an interval between the first branch electrode and the basal pattern electrode is equal to or larger than a diameter of a droplet to be removed.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 13, 2025
    Inventors: Kwang-Joon Han, Yu-Bin Jeon, Byung-Kyu Cho, Sung-Hun Han, Hong-Jun Cha, Young-Ern Jung
  • Patent number: 8437099
    Abstract: A hard disk drive includes a housing including a base member and a cover member, a spindle motor disposed in the housing, a data storage disk disposed on the spindle motor, an actuator disposed in the housing to move a read/write head to a position on the data storage disk, a clock signal providing unit disposed on the data storage disk to provide a clock signal of the data storage disk, a position signal providing unit disposed on the actuator to provide a position signal of the actuator, and first and second windows disposed in the housing to correspond to the clock signal providing unit and the position signal providing unit.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: May 7, 2013
    Assignee: Seagate Technology LLC
    Inventors: Kyung-ho Kim, Dong-ho Oh, Ha-yong Kim, Sung-joon Han, Kwang-jo Jung
  • Publication number: 20090268331
    Abstract: A hard disk drive includes a housing including a base member and a cover member, a spindle motor disposed in the housing, a data storage disk disposed on the spindle motor, an actuator disposed in the housing to move a read/write head to a position on the data storage disk, a clock signal providing unit disposed on the data storage disk to provide a clock signal of the data storage disk, a position signal providing unit disposed on the actuator to provide a position signal of the actuator, and first and second windows disposed in the housing to correspond to the clock signal providing unit and the position signal providing unit.
    Type: Application
    Filed: April 29, 2009
    Publication date: October 29, 2009
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Kyung-ho KIM, Dong-ho Oh, Ha-yong Kim, Sung-joon Han, Kwong-jo Jung