Patents by Inventor Ki Yon Song

Ki Yon Song 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).

  • Liquid crystal display device and method for improving color reproducibility thereof
    Patent number: 8184077
    Abstract: A liquid crystal display device and a method for improving a color reproducibility thereof, detects a gray scale value in applied image information that reduces a color reproducibility of a liquid crystal display device by measuring a gray scale level of a color displayed on a liquid crystal display panel while increasing the gray scale value of the color, and storing a maximum value of the gray scale level is displayable prior to reducing the color reproducibility. The applied image information is compensated to prevent reduction in the color reproducibility.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: May 22, 2012
    Assignee: LG Display Co., Ltd
    Inventors: Don-Gyou Lee, Ki-Yon Song, Jung-Ho Kil
  • Optical sheet and optimizing method thereof
    Patent number: 7072030
    Abstract: An optical sheet optimization method includes the steps of: extracting a statistic sample using transmissivity, haze data and luminance data of an optical diffusion sheet corresponding to the transmissivity and the haze data; making a regression model for the extracted statistic sample; calculating a regression coefficient to minimize an error term (residual) of the regression model and deriving a regression expression using the calculated regression coefficient; and predicting a luminance of the optical diffusion sheet due to changes of the transmissivity and the haze data using the derived regression expression.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: July 4, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Don Gyou Lee, Ki Yon Song, Soon Ho Lee, Jang Ryang Kim
  • Liquid crystal display device and method for improving color reproducibility thereof
    Publication number: 20040125063
    Abstract: A liquid crystal display device and a method for improving a color reproducibility thereof, detects a gray scale value in applied image information that reduces a color reproducibility of a liquid crystal display device by measuring a gray scale level of a color displayed on a liquid crystal display panel while increasing the gray scale value of the color, and storing a maximum value of the gray scale level is displayable prior to reducing the color reproducibility. The applied image information is compensated to prevent reduction in the color reproducibility.
    Type: Application
    Filed: October 23, 2003
    Publication date: July 1, 2004
    Inventors: Don-Gyou Lee, Ki-Yon Song, Jung-Ho Kil
  • Optical sheet and optimizing method thereof
    Publication number: 20040125362
    Abstract: An optical sheet optimization method includes the steps of: extracting a statistic sample using transmissivity, haze data and luminance data of an optical diffusion sheet corresponding to the transmissivity and the haze data; making a regression model for the extracted statistic sample; calculating a regression coefficient to minimize an error term (residual) of the regression model and deriving a regression expression using the calculated regression coefficient; and predicting a luminance of the optical diffusion sheet due to changes of the transmissivity and the haze data using the derived regression expression.
    Type: Application
    Filed: October 29, 2003
    Publication date: July 1, 2004
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Don Gyou Lee, Ki Yon Song, Soon Ho Lee, Jang Ryang Kim