Patents by Inventor Won-Young Chang

Won-Young Chang 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: 20140087064
    Abstract: A method for preparing a touch screen panel includes forming a non-conductive pattern on a non-display part on one face of a window plate, so that the thickness of the non-conductive pattern is decreased to produce a thin touch screen panel. In addition, this will prevent leakage of ink through the holes of the window plate, and improve the reliability of a conductive electrode pattern layer at a lateral side of the non-conductive pattern, thereby reducing failure rates.
    Type: Application
    Filed: August 21, 2013
    Publication date: March 27, 2014
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Yong-Seok CHOI, Won-Young CHANG, Ji-Min CHUN
  • Publication number: 20140075750
    Abstract: A touch screen panel and a method for preparing the same, and more specifically, a touch screen panel includes a window plate 311, a non-conductive color pattern 312 formed on a non-display part on one face of the window plate, and a non-conductive shielding pattern 313 formed on the non-conductive color pattern 312, so as to provide a non-conductive pattern having the desired colors and shielding effects, and to reduce failure rates during the formation of the non-conductive pattern, as well as a method for preparing the same.
    Type: Application
    Filed: August 21, 2013
    Publication date: March 20, 2014
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Yong-Seok CHOI, Won-Young CHANG, Ji-Min CHUN, Young-Jun JIN
  • Publication number: 20110269309
    Abstract: Provided are a photoresist composition having superior adhesion to an etch target film, a method of forming a pattern by using the photoresist composition, and a method of manufacturing a thin-film transistor (TFT) substrate. The photoresist composition includes an alkali-soluble resin; a photosensitive compound; a solvent; and 0.01 to 0.1 parts by weight of a compound represented by Formula 1: wherein R is one of hydrogen, an alkyl having 1 to 10 carbon atoms, a cycloalkyl having 4 to 8 carbon atoms, and a phenyl group.
    Type: Application
    Filed: December 29, 2010
    Publication date: November 3, 2011
    Applicants: DONGWOO FINE-CHEM CO., LTD, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pil-Soon HONG, Gwui-Hyun PARK, Jin-Ho JU, Jean-Ho SONG, Sang-Tae KIM, Seong-Hyeon KIM, Won-Young CHANG, Jong-Heum YOON, Eun-Sang LEE, Min-Ju IM
  • Patent number: 7981706
    Abstract: A photoresist composition includes an alkali-soluble resin, a dissolution inhibitor including a quinone diazide compound, a first additive including a benzenol compound represented by the following Chemical Formula 1, a second additive including an acrylic copolymer represented by the following Chemical Formula 2 and an organic solvent. Accordingly, heat resistance of a photoresist pattern may be improved, and the photoresist pattern may be readily stripped. As a result, crack formation in the photoresist pattern may be reduced and/or prevented.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 19, 2011
    Assignees: Samsung Electronics Co., Ltd., Dongwoo Fine-Chem
    Inventors: Jeong-Min Park, Jung-Soo Lee, Won-Young Chang, Eun-Sang Lee, In-Ho Yu, Seong-Hyeon Kim
  • Publication number: 20110097835
    Abstract: A photoresist composition includes an alkali-soluble resin, a dissolution inhibitor including a quinone diazide compound, a first additive including a benzenol compound represented by the following Chemical Formula 1, a second additive including an acrylic copolymer represented by the following Chemical Formula 2 and an organic solvent. Accordingly, heat resistance of a photoresist pattern may be improved, and the photoresist pattern may be readily stripped. As a result, crack formation in the photoresist pattern may be reduced and/or prevented.
    Type: Application
    Filed: September 28, 2010
    Publication date: April 28, 2011
    Applicants: SAMSUNG ELECTRONICS CO., LTD, DONGWOO FINE-CHEM
    Inventors: Jeong-Min PARK, Jung-Soo LEE, Won-Young CHANG, Eun-Sang LEE, In-Ho YU, Seong-Hyeon KIM