Patents by Inventor Joohun Sung

Joohun Sung 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: 7838785
    Abstract: A keypad assembly for radiating light to a key button using a light conductive plate is provided. The keypad assembly having a key pad with key buttons includes: a light conductive plate for advancing light emitted through a side surface thereof into the inside thereof and for radiating light to the key buttons by a reflection pattern; a light emitting element for emitting light through the said side surface of the light conductive plate into the inside of the light conductive plate; and a reflecting plate formed in a side surface of the light conductive plate to which light emitted from the light emitting element is directed to reflect light into the inside of the light conductive plate. Therefore, by reflecting light that would otherwise be discharged outside the keypad assembly to the inside of the light conductive plate using the reflecting plate, the light can be used.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: November 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joohun Sung
  • Publication number: 20080257699
    Abstract: A keypad assembly for radiating light to a key button using a light conductive plate is provided. The keypad assembly having a key pad with key buttons includes: a light conductive plate for advancing light emitted through a side surface thereof into the inside thereof and for radiating light to the key buttons by a reflection pattern; a light emitting element for emitting light through the said side surface of the light conductive plate into the inside of the light conductive plate; and a reflecting plate formed in a side surface of the light conductive plate to which light emitted from the light emitting element is directed to reflect light into the inside of the light conductive plate. Therefore, by reflecting light that would otherwise be discharged outside the keypad assembly to the inside of the light conductive plate using the reflecting plate, the light can be used.
    Type: Application
    Filed: February 21, 2008
    Publication date: October 23, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Joohun Sung