Patents by Inventor Chul-Won PARK

Chul-Won PARK 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: 9117768
    Abstract: In a method for manufacturing a display substrate, a thin film transistor is formed on a base substrate. The thin film transistor includes a gate electrode, an active pattern, a source electrode and a drain electrode. A first passivation layer is formed to cover the thin film transistor. A second passivation layer is formed on the first passivation layer. A photoresist pattern is formed to partially expose the second passivation layer. The first passivation layer and the second passivation layer are partially removed to form a contact hole exposing the drain electrode. A pixel electrode layer is formed on the second passivation layer, the drain electrode and the photoresist pattern. A portion of the pixel electrode layer and the second photoresist pattern are removed to form a pixel electrode. The portion of the pixel electrode layer is disposed on a top surface and a sidewall of the photoresist pattern.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: August 25, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki-Hyun Cho, Jeong-Won Kim, Kwang-Woo Park, Chul-Won Park
  • Patent number: 9069258
    Abstract: A mask may include a circuit area and a pixel area. The circuit area includes a circuit pattern. The pixel area includes a pixel pattern which is extended in a length direction and an assist pattern which is at an end portion of the pixel pattern and adjacent to the circuit area.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Bong-Yeon Kim, Min Kang, Seung-Bo Shim, Jong-kwang Lee, Jin-Ho Ju, Jeong-Won Kim, Tae-Gyun Kim, Chul-Won Park, Jun-Hyuk Woo, Hyun-Joo Lee
  • 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
  • Publication number: 20150008426
    Abstract: In a method for manufacturing a display substrate, a thin film transistor is formed on a base substrate. The thin film transistor includes a gate electrode, an active pattern, a source electrode and a drain electrode. A first passivation layer is formed to cover the thin film transistor. A second passivation layer is formed on the first passivation layer. A photoresist pattern is formed to partially expose the second passivation layer. The first passivation layer and the second passivation layer are partially removed to form a contact hole exposing the drain electrode. A pixel electrode layer is formed on the second passivation layer, the drain electrode and the photoresist pattern. A portion of the pixel electrode layer and the second photoresist pattern are removed to form a pixel electrode. The portion of the pixel electrode layer is disposed on a top surface and a sidewall of the photoresist pattern.
    Type: Application
    Filed: January 6, 2014
    Publication date: January 8, 2015
    Applicant: Samsung Display Co., LTD.
    Inventors: Ki-Hyun CHO, Jeong-Won KIM, Kwang-Woo PARK, Chul-Won PARK
  • 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: 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
  • Publication number: 20140065523
    Abstract: A pattern mask for patterning a thin film includes a transparent or translucent substrate with a plurality of grooves formed thereon having a pitch of about 4.6 ?m to about 10.8 ?m.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 6, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: JUN HYUK WOO, Min Kang, Bong-Yeon Kim, Jeong Won Kim, Jin Ho Ju, Tae Gyun Kim, Chul Won Park, Hyun Joo Lee
  • Publication number: 20130316270
    Abstract: A mask may include a circuit area and a pixel area. The circuit area includes a circuit pattern. The pixel area includes a pixel pattern which is extended in a length direction and an assist pattern which is at an end portion of the pixel pattern and adjacent to the circuit area.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 28, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Bong-Yeon KIM, Min KANG, Seung-Bo SHIM, Jong-kwang LEE, Jin-Ho JU, Jeong-Won KIM, Tae-Gyun KIM, Chul-Won PARK, Jun-Hyuk WOO, Hyun-Joo LEE