Patents by Inventor Sung-gon Ryu

Sung-gon Ryu 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: 20070025609
    Abstract: In a method of detecting a defect of the pattern in a semiconductor device, the pattern to be inspected is formed on a substrate, and then a thin film is continuously formed on the pattern, the defect of the pattern and the substrate to accurately detect the defect. The thin film has a reflectivity substantially greater than that of the pattern. The defect of the pattern is detected by inspecting the substrate having the thin film covering the pattern and the defect. A minute defect of the pattern such as residues or a micro bridge may be readily detected.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 1, 2007
    Inventors: Sung-Gon RYU, Kyu-Hong LIM, Hyung-Suk CHO, Sung-Kweon KIM
  • Patent number: 7027638
    Abstract: A method for correcting color variations on the surface of a wafer, a method for selectively detecting a defect from different patterns, and computer readable recording media for the same are provided. Color variations in images of different parts of a wafer can be corrected using the mean and standard deviation of grey level values for the pixels forming each of the different parts of the wafer. In addition, different threshold values are applied to metal interconnect patterns and spaces of the wafer so that a defect can be selectively detected from the different patterns. Thus, a bridge known as a fatal, or killing defect to a semiconductor device can be detected without also falsely detecting grains as fatal defects. Due to increased defect screening capacity of the methods, the defect detecting method can be further efficiently managed.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: April 11, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chung-sam Jun, Sang-mun Chon, Hyoung-jin Kim, Dong-chun Lee, Sang-bong Choi, Sung-gon Ryu
  • Publication number: 20020172412
    Abstract: A method for correcting color variations on the surface of a wafer, a method for selectively detecting a defect from different patterns, and computer readable recording media for the same are provided. Color variations in images of different parts of a wafer can be corrected using the mean and standard deviation of grey level values for the pixels forming each of the different parts of the wafer. In addition, different threshold values are applied to metal interconnect patterns and spaces of the wafer so that a defect can be selectively detected from the different patterns. Thus, a bridge known as a fatal, or killing defect to a semiconductor device can be detected without also falsely detecting grains as fatal defects. Due to increased defect screening capacity of the methods, the defect detecting method can be further efficiently managed.
    Type: Application
    Filed: September 7, 2001
    Publication date: November 21, 2002
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chung-sam Jun, Sang-mun Chon, Hyoung-jin Kim, Dong-chun Lee, Sang-bong Choi, Sung-gon Ryu