Patents by Inventor Byong-Deog Choi

Byong-Deog 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).

  • Photo sensor and light emitting display having the same
    Patent number: 7977681
    Abstract: A photo sensor includes a light incidence unit including a plurality of light incidence layers, the light incidence unit having a varying light transmittance with respect to external light, and a photo sensing unit including a plurality of photo sensing elements, the photo sensing unit being configured to output electrical signals in accordance with an amount of light transmitted through the light incidence unit to determine intensity of the external light, each of the photo sensing elements being configured to output electrical signals in accordance with light transmitted through a respective light incidence layer.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: July 12, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Ki-Ju Im, Byong-Deog Choi, Won-Sik Kim, Hye-Hyang Park, Hui-Won Yang, Yun-Gyu Lee
  • Photo sensor and light emitting display having the same
    Publication number: 20090032823
    Abstract: A photo sensor includes a light incidence unit including a plurality of light incidence layers, the light incidence unit having a varying light transmittance with respect to external light, and a photo sensing unit including a plurality of photo sensing elements, the photo sensing unit being configured to output electrical signals in accordance with an amount of light transmitted through the light incidence unit to determine intensity of the external light, each of the photo sensing elements being configured to output electrical signals in accordance with light transmitted through a respective light incidence layer.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 5, 2009
    Inventors: Ki-Ju Im, Byong-Deog Choi, Won-Sik Kim, Hye-Hyang Park, Hui-Won Yang, Yun-Gyu Lee