Patents by Inventor Sang Iee Lee

Sang Iee Lee 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: 7771899
    Abstract: A method for repairing photomask pattern defects includes patterning a target layer on a transparent substrate, thereby forming first patterns, detecting a defect die including a defect pattern by inspecting the first patterns; forming a mask layer on the transparent substrate, forming a mask pattern that selectively exposes the defect die by performing an exposure process and a development process on the mask layer; etching the target layer of the exposed defect die using the mask pattern as an etching mask to expose the transparent substrate, depositing a target layer on the exposed defect die of the transparent substrate, and patterning the deposited target layer, thereby forming a second pattern on the defect die.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: August 10, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventor: Sang Iee Lee
  • Publication number: 20080081299
    Abstract: A method for repairing photomask pattern defects includes patterning a target layer on a transparent substrate, thereby forming first patterns, detecting a defect die including a defect pattern by inspecting the first patterns; forming a mask layer on the transparent substrate, forming a mask pattern that selectively exposes the defect die by performing an exposure process and a development process on the mask layer; etching the target layer of the exposed defect die using the mask pattern as an etching mask to expose the transparent substrate, depositing a target layer on the exposed defect die of the transparent substrate, and patterning the deposited target layer, thereby forming a second pattern on the defect die.
    Type: Application
    Filed: June 20, 2007
    Publication date: April 3, 2008
    Applicant: HUNIX SEMICONDUCTOR INC.
    Inventor: Sang Iee Lee