Patents by Inventor Hoi-Sik Chung

Hoi-Sik Chung 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: 7208454
    Abstract: A cleaning solution for a cured anti-reflective layer (AFC layer) component and a method of cleaning an anti-reflective layer component by using the same, wherein the cleaning solution comprises about 5–30% by weight of ammonium hydroxide, about 23–70% by weight of an organic solvent and about 10–50% by weight of water. When an organic material is spattered to adjacent equipment during implementing a coating process onto a wafer, the equipment is detached and then is dipped into the cleaning solution. Thereafter, the equipment is rinsed and dried. Cured and non-cured organic materials are advantageously removed. Cured organic materials left for a period of time, particularly anti-reflective layer components are advantageously removed.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: April 24, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Jin Park, Kyung-Dae Kim, Hoi-Sik Chung, Pil-Kwon Jun, Young-Ho Kim
  • Publication number: 20040238012
    Abstract: A cleaning solution for a cured anti-reflective layer (AFC layer) component and a method of cleaning an anti-reflective layer component by using the same, wherein the cleaning solution comprises about 5-30% by weight of ammonium hydroxide, about 23-70% by weight of an organic solvent and about 10-50% by weight of water. When an organic material is spattered to adjacent equipment during implementing a coating process onto a wafer, the equipment is detached and then is dipped into the cleaning solution. Thereafter, the equipment is rinsed and dried. Cured and non-cured organic materials are advantageously removed. Cured organic materials left for a period of time, particularly anti-reflective layer components are advantageously removed.
    Type: Application
    Filed: July 8, 2004
    Publication date: December 2, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Jin Park, Kyung-Dae Kim, Hoi-Sik Chung, Pil-Kwon Jun, Young-Ho Kim
  • Patent number: 6777379
    Abstract: A cleaning solution for a cured anti-reflective layer (AFC layer) component and a method of cleaning an anti-reflective layer component by using the same, wherein the cleaning solution comprises about 5-30% by weight of ammonium hydroxide, about 23-70% by weight of an organic solvent and about 10-50% by weight of water. When an organic material is spattered to adjacent equipment during implementing a coating process onto a wafer, the equipment is detached and then is dipped into the cleaning solution. Thereafter, the equipment is rinsed and dried. Cured and non-cured organic materials are advantageously removed. Cured organic materials left for a period of time, particularly anti-reflective layer components are advantageously removed.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: August 17, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Jin Park, Kyung-Dae Kim, Hoi-Sik Chung, Pil-Kwon Jun, Young-Ho Kim
  • Publication number: 20020166568
    Abstract: A cleaning solution for a cured anti-reflective layer (AFC layer) component and a method of cleaning an anti-reflective layer component by using the same, wherein the cleaning solution comprises about 5-30% by weight of ammonium hydroxide, about 23-70% by weight of an organic solvent and about 10-50% by weight of water. When an organic material is spattered to adjacent equipment during implementing a coating process onto a wafer, the equipment is detached and then is dipped into the cleaning solution. Thereafter, the equipment is rinsed and dried. Cured and non-cured organic materials are advantageously removed. Cured organic materials left for a period of time, particularly anti-reflective layer components are advantageously removed.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 14, 2002
    Inventors: Dong-Jin Park, Kyung-Dae Kim, Hoi-Sik Chung, Pil-Kwon Jun, Young-Ho Kim