Patents by Inventor Eun Jeagal

Eun Jeagal 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: 9460826
    Abstract: The present invention relates to a conductive composition for forming a back electrode of a liquid crystal device, and a formation method of a back electrode using the same. The conductive composition enables the supply of a back electrode having excellent coating uniformity, low surface resistance, high transmittance and surface hardness, and particularly excellent reliability of 500 hours.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: October 4, 2016
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Ja Hun Byeon, Dong Min Kim, Won-Young Lee, Eun Jeagal, Seung-Ki Kim, Woo Sung Hong, Jung Yul Lee, You-Young Kim
  • Patent number: 9417521
    Abstract: A method of forming a metal pattern is disclosed. In the method, a metal layer is formed on a base substrate. A photoresist composition is coated on the metal layer to form a coating layer. The photoresist composition includes a binder resin, a photo-sensitizer and a mixed solvent including a first solvent, a second solvent having a higher volatility than the first solvent, and a third solvent having a higher volatility than the second solvent. The coating layer is exposed to light. The coating layer is partially removed to form a photoresist pattern. The metal layer is patterned by using the photoresist pattern as a mask.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: August 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Hyun Cho, Hoon Kang, Jae-Sung Kim, Dong-Min Kim, Seung-Ki Kim, Eun Jeagal
  • Patent number: 9343553
    Abstract: A photoresist composition, a method of forming a pattern, and a method of manufacturing a thin film transistor substrate, the composition including a solvent, a novolak resin, a diazide-based photo-sensitizer, an acryl compound represented by the following Chemical Formula 1:
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: May 17, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Soo Lee, Jeong-Min Park, Sung-Kyun Park, Jun Chun, Ki-Hyun Cho, Ji-Hyun Kim, Dong-Min Kim, Seung-Ki Kim, Eun Jeagal
  • Patent number: 9176383
    Abstract: A photoresist composition may include a novolac resin, a diazide-based photosensitive compound, a surfactant represented by Chemical Formula 1 below, and a solvent. R1 and R2 may denote a hydrogen atom or an alkyl group, x may be 10-50, and y may be 10-50.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: November 3, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong-Won Kim, Ki-Hyun Cho, Kwang-Woo Park, Chul-Won Park, Jin-Ho Ju, Dong-Min Kim, Eun Jeagal
  • Publication number: 20150205200
    Abstract: A photoresist composition, a method of forming a pattern, and a method of manufacturing a thin film transistor substrate, the composition including a solvent, a novolak resin, a diazide-based photo-sensitizer, an acryl compound represented by the following Chemical Formula 1:
    Type: Application
    Filed: October 24, 2014
    Publication date: July 23, 2015
    Inventors: Jung-Soo LEE, Jeong-Min PARK, Sung-Kyun PARK, Jun CHUN, Ki-Hyun CHO, Ji-Hyun KIM, Dong-Min KIM, Seung-Ki KIM, Eun JEAGAL
  • Publication number: 20150126005
    Abstract: A photoresist composition may include a novolac resin, a diazide-based photosensitive compound, a surfactant represented by Chemical Formula 1 below, and a solvent. R1 and R2 may denote a hydrogen atom or an alkyl group, x may be 10-50, and y may be 10-50.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Jeong-Won KIM, Ki-Hyun CHO, Kwang-Woo PARK, Chul-Won PARK, Jin-Ho JU, Dong-Min KIM, Eun JEAGAL
  • Patent number: 8911926
    Abstract: A method of forming a metal pattern is disclosed. In the method, a metal layer is formed on a base substrate. A photoresist composition is coated on the metal layer to form a coating layer. The photoresist composition includes a binder resin, a photo-sensitizer, a mercaptopropionic acid compound and a solvent. The coating layer is exposed to a light. The coating layer is partially removed to form a photoresist pattern. The metal layer is patterned by using the photoresist pattern as a mask.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: December 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong-Won Kim, Min Kang, Bong-Yeon Kim, Jin-Ho Ju, Dong-Min Kim, Tae-Gyun Kim, Joo-Kyoung Park, Chul-Won Park, Jun-Hyuk Woo, Won-Young Lee, Hyun-Joo Lee, Eun Jeagal
  • Publication number: 20140326927
    Abstract: The present invention relates to a conductive composition for forming a back electrode of a liquid crystal device, and a formation method of a back electrode using the same. The conductive composition enables the supply of a back electrode having excellent coating uniformity, low surface resistance, high transmittance and surface hardness, and particularly excellent reliability of 500 hours.
    Type: Application
    Filed: December 3, 2012
    Publication date: November 6, 2014
    Inventors: Ja Hun Byeon, Dong Min Kim, Won-Young Lee, Eun Jeagal, Seung-Ki Kim, Woo Sung Hong, Jung Yul Lee, You-Young Kim
  • Publication number: 20140183162
    Abstract: A method of forming a metal pattern is disclosed. In the method, a metal layer is formed on a base substrate. A photoresist composition is coated on the metal layer to form a coating layer. The photoresist composition includes a binder resin, a photo-sensitizer and a mixed solvent including a first solvent, a second solvent having a higher volatility than the first solvent, and a third solvent having a higher volatility than the second solvent. The coating layer is exposed to light. The coating layer is partially removed to form a photoresist pattern. The metal layer is patterned by using the photoresist pattern as a mask.
    Type: Application
    Filed: June 6, 2013
    Publication date: July 3, 2014
    Inventors: Ki-Hyun CHO, Hoon KANG, Jae-Sung KIM, Dong-Min KIM, Seung-Ki KIM, Eun JEAGAL
  • Publication number: 20140076847
    Abstract: A method of forming a metal pattern is disclosed. In the method, a metal layer is formed on a base substrate. A photoresist composition is coated on the metal layer to form a coating layer. The photoresist composition includes a binder resin, a photo-sensitizer, a mercaptopropionic acid compound and a solvent. The coating layer is exposed to a light. The coating layer is partially removed to form a photoresist pattern. The metal layer is patterned by using the photoresist pattern as a mask.
    Type: Application
    Filed: April 5, 2013
    Publication date: March 20, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jeong-Won Kim, Min Kang, Bong-Yeon Kim, Jin-Ho Ju, Dong-Min Kim, Tae-Gyun Kim, Joo-Kyoung Park, Chul-Won Park, Jun-Hyuk Woo, Won-Young Lee, Hyun-Joo Lee, Eun Jeagal