Patents by Inventor Do-Kwon Son

Do-Kwon Son 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: 7754118
    Abstract: A polishing pad is provided. The polishing pad includes a polishing layer composed of a polymeric matrix and liquid microelements embedded in the polymeric matrix. Open pores defined by the embedded liquid microelements are distributed across a surface of the polishing layer. Due to the microstructural open pores uniformly distributed across a surface of the polishing pad, a polishing operation can be performed at high precision. The polishing pad shows constant polishing performance during the polishing operation, can be stably used, and does not cause a wafer to be scratched. In addition, a method of manufacturing the polishing pad is provided. Since all components used to manufacture the polishing pad are in a liquid phase, manufacturing can be easily performed.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: July 13, 2010
    Inventors: Hyun Huh, Sang-Mok Lee, Kee-Cheon Song, Seung-geun Kim, Do-Kwon Son
  • Patent number: 7579071
    Abstract: A polishing pad is provided. The polishing pad includes a polishing layer composed of a polymeric matrix and liquid microelements embedded in the polymeric matrix. Open pores defined by the embedded liquid microelements are distributed across a surface of the polishing layer. Due to the microstructural open pores uniformly distributed across a surface of the polishing pad, a polishing operation can be performed at high precision. The polishing pad shows constant polishing performance during the polishing operation, can be stably used, and does not cause a wafer to be scratched. In addition, a method of manufacturing the polishing pad is provided. Since all components used to manufacture the polishing pad are in a liquid phase, manufacturing can be easily performed.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: August 25, 2009
    Assignee: Korea Polyol Co., Ltd.
    Inventors: Hyun Huh, Sang-Mok Lee, Kee-Cheon Song, Seung-geun Kim, Do-Kwon Son
  • Publication number: 20060125133
    Abstract: A polishing pad is provided. The polishing pad includes a polishing layer composed of a polymeric matrix and liquid microelements embedded in the polymeric matrix. Open pores defined by the embedded liquid microelements are distributed across a surface of the polishing layer. Due to the microstructural open pores uniformly distributed across a surface of the polishing pad, a polishing operation can be performed at high precision. The polishing pad shows constant polishing performance during the polishing operation, can be stably used, and does not cause a wafer to be scratched. In addition, a method of manufacturing the polishing pad is provided. Since all components used to manufacture the polishing pad are in a liquid phase, manufacturing can be easily performed.
    Type: Application
    Filed: February 10, 2006
    Publication date: June 15, 2006
    Inventors: Hyun Huh, Sang-Mok Lee, Kee-Cheon Song, Seung-geun Kim, Do-Kwon Son
  • Patent number: 7029747
    Abstract: An integral polishing pad includes an elastic support layer and a polishing layer, which is formed on the elastic support layer and has a higher hardness than the elastic support layer. The elastic support layer and the polishing layer are made from materials chemically compatible with each other so that a structural border between the elastic support layer and the polishing layer does not exist. In addition, the integral polishing pad also includes a transparent region, which is transparent to a light source used to detect the surface state of an object being polished and integrated with the other elements of the integral polishing pad. The integral polishing pad has high planarization efficiency and uniform properties, and thus can be reliably used for polishing. In addition, the integral polishing pad prevents a congestion of a polishing slurry and facilitates delivery of the polishing slurry.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: April 18, 2006
    Assignee: Korea Polyol Co., Ltd.
    Inventors: Hyun Huh, Sang-Mok Lee, Kee-Cheon Song, Seung-geun Kim, Do-Kwon Son
  • Publication number: 20050260928
    Abstract: An integral polishing pad includes an elastic support layer and a polishing layer, which is formed on the elastic support layer and has a higher hardness than the elastic support layer. The elastic support layer and the polishing layer are made from materials chemically compatible with each other so that a structural border between the elastic support layer and the polishing layer does not exist. In addition, the integral polishing pad also includes a transparent region, which is transparent to a light source used to detect the surface state of an object being polished and integrated with the other elements of the integral polishing pad. The integral polishing pad has high planarization efficiency and uniform properties, and thus can be reliably used for polishing. In addition, the integral polishing pad prevents a congestion of a polishing slurry and facilitates delivery of the polishing slurry.
    Type: Application
    Filed: August 27, 2003
    Publication date: November 24, 2005
    Inventors: Hyun Huh, Sang-Mok Lee, Kee-Cheon Song, Seung-Geun Kim, Do-Kwon Son
  • Publication number: 20040053007
    Abstract: A polishing pad is provided. The polishing pad includes a polishing layer composed of a polymeric matrix and liquid microelements embedded in the polymeric matrix. Open pores defined by the embedded liquid microelements are distributed across a surface of the polishing layer. Due to the microstructural open pores uniformly distributed across a surface of the polishing pad, a polishing operation can be performed at high precision. The polishing pad shows constant polishing performance during the polishing operation, can be stably used, and does not cause a wafer to be scratched. In addition, a method of manufacturing the polishing pad is provided. Since all components used to manufacture the polishing pad are in a liquid phase, manufacturing can be easily performed.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 18, 2004
    Inventors: Hyun Huh, Sang-Mok Lee, Kee-Cheon Song, Seung-geun Kim, Do-Kwon Son