Patents by Inventor Eung-Sug Lee

Eung-Sug 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).

  • Publication number: 20050184436
    Abstract: A UV nanoimprint lithography process and its apparatus that are able to repeatedly fabricates nanostructures on a substrate (wafer, UV-transparent plate) by using a stamp that is as large as or smaller than the substrate in size are provided. The apparatus includes a substrate chuck for mounting the substrate; a stamp made of UV-transparent materials and having more than two element stamps, wherein nanostructures are formed on the surface of each element stamp; a stamp chuck for mounting the stamp; a UV lamp unit for providing UV light to cure resist applied between the element stamps and the substrate; a moving unit for moving the substrate chuck or the stamp chuck to press the resist with the element stamps and substrate; and a pressure supply unit for applying pressurized gas to some selected regions of the substrate to help complete some incompletely filled element stamps.
    Type: Application
    Filed: February 24, 2005
    Publication date: August 25, 2005
    Inventors: Jun-Ho Jeong, HyonKee Sohn, Yong-Suk Sim, Young-Jae Shin, Eung-Sug Lee, Kyung-Hyun Whang
  • Publication number: 20040211271
    Abstract: The present invention relates to a method for manufacturing a probe for detecting surface signals or chemical signals through a long and slender rod-shaped nano structure such as tungsten nanowire, carbon nanotube, boron nanotube, etc., being attached to a tip end portion thereof. According to the method, a holder, acting as the probe, including a first electrode to which the rod-shaped nano structure is attached, and a second electrode at a predetermined distance from the first electrode are partially or fully immersed in a solution containing the rod-shaped structure. When a voltage is applied between two electrodes, an electrical field is generated, and the rod-shaped nano structure is attached to the holder, acting as the probe.
    Type: Application
    Filed: August 28, 2003
    Publication date: October 28, 2004
    Inventors: Chang Soo Han, Eung Sug Lee, Hyung-Woo Lee
  • Publication number: 20040192041
    Abstract: A UV nanoimprint lithography process for forming nanostructures on a substrate. The process includes depositing a resist on a substrate; contacting a stamp having formed thereon nanostructures at areas corresponding to where nanostructures on the substrate are to be formed to an upper surface of the resist, and applying a predetermined pressure to the stamp in a direction toward the substrate, the contacting and applying being performed at room temperature and at low pressure; irradiating ultraviolet rays onto the resist; separating the stamp from the resist; and etching an upper surface of the substrate on which the resist is deposited. The stamp is an elementwise embossed stamp that comprises at least two element stamps, and grooves formed between adjacent element stamps and having a depth that is greater than a depth of the nanostructures formed on the element stamps.
    Type: Application
    Filed: June 19, 2003
    Publication date: September 30, 2004
    Inventors: Jun-Ho Jeong, HyonKee Sohn, Young-Suk Sim, Young-Jae Shin, Eung-Sug Lee, Kyung-Hyun Whang