Patents by Inventor Hyun Hwan Ahn

Hyun Hwan Ahn 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: 11970616
    Abstract: A modified conjugated diene-based polymer having high linearity and improved compounding properties is provided. The modified conjugated diene-based polymer includes phosphor, sulfur and chlorine in specific amount ranges, and the degree of branching is controlled, and accordingly, if applied to a rubber composition, tensile strength and viscoelasticity may be excellent, and processability may be markedly improved.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: April 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Hwan Oh, Hyo Jin Bae, Hyun Woong Park, Jeong Heon Ahn, Jae Hyeong Park
  • Patent number: 8821642
    Abstract: Disclosed herein is a flat panel display (FPD) manufacturing apparatus for performing a desired process for a substrate positioned in a chamber after establishing a vacuum atmosphere in the chamber. The vacuum chamber is divided into a chamber body and an upper cover to ensure easy opening/closing operations of the upper cover.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: September 2, 2014
    Assignee: Advanced Display Process Engineering Co., Ltd.
    Inventors: Young Jong Lee, Jun Young Choi, Saeng Hyun Jo, Hyun Hwan Ahn, Suk-Min Son, Sung Il Ahn
  • Patent number: 8758516
    Abstract: Disclosed herein is a flat panel display (FPD) manufacturing apparatus for performing a desired process for a substrate positioned in a chamber after establishing a vacuum atmosphere in the chamber. The vacuum chamber is divided into a chamber body and an upper cover to ensure easy opening/closing operations of the upper cover.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: June 24, 2014
    Assignee: Advanced Display Process Engineering Co., Ltd.
    Inventors: Young Jong Lee, Jun Young Choi, Saeng Hyun Jo, Hyun Hwan Ahn, Suk-Min Son, Sung Il Ahn
  • Patent number: 8273211
    Abstract: Disclosed herein is a flat panel display manufacturing apparatus in a predetermined process is performed using plasma generated therein. In such a flat panel display manufacturing apparatus, a process gas is supplied into a chamber in an evenly diffused state to generate even plasma inside a symmetrical interior space of the chamber. Consequently, the flat panel display manufacturing apparatus can appropriately control flow rate of the plasma, thereby being capable of performing even processing on a large-scale substrate. In the flat panel display manufacturing apparatus, a substrate pedestal thereof is provided with a combination of vertical and horizontal shielding members, thereby being entirely protected from attack of the plasma, resulting in an increased life-span.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: September 25, 2012
    Assignee: Advanced Display Process Engineering Co., Ltd.
    Inventors: Gwang Ho Hur, Jun Young Choi, Cheol Won Lee, Hyun Hwan Ahn, Young Joo Hwang, Chun Sik Kim
  • Patent number: 7879181
    Abstract: Disclosed herein is a flat panel display (FPD) manufacturing apparatus for performing a desired process for a substrate positioned in a chamber after establishing a vacuum atmosphere in the chamber. The vacuum chamber is divided into a chamber body and an upper cover to ensure easy opening/closing operations of the upper cover.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: February 1, 2011
    Assignee: Advanced Display Process Engineering Co., Ltd.
    Inventors: Young Jong Lee, Jun Young Choi, Saeng Hyun Jo, Hyun Hwan Ahn, Suk-Min Son, Sung Il Ahn
  • Patent number: 7537673
    Abstract: Disclosed herein is a plasma processing apparatus, which generates plasma within a vacuum chamber to process semiconductor substrates using the plasma. The apparatus comprises a substrate mounting table, an outer lifting bar, and a baffle. The outer lifting bar comprises a driving shaft, and a substrate supporting member coupled perpendicular to an upper end of the driving shaft. The baffle comprises a baffle plate coupled to the upper end of the driving shaft, and a shielding portion coupled to a lower surface of the baffle plate. The substrate supporting member is a foldable substrate supporting member. The baffle and the substrate supporting member are driven up and down at the same time by the driving shaft. As a result, it is possible to protect the substrate supporting member from plasma, and to prevent interference between the baffle and the outer lifting bar during operation of the plasma processing apparatus.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: May 26, 2009
    Assignee: Advanced Display Processing Engineering Co., Ltd.
    Inventors: Young Jong Lee, Jun Young Choi, Hyun Hwan Ahn, Chan-Ho Kang, Hyun-Woo Baek, Young-Joo Hwang
  • Publication number: 20090084316
    Abstract: Disclosed herein is a flat panel display (FPD) manufacturing apparatus for performing a desired process for a substrate positioned in a chamber after establishing a vacuum atmosphere in the chamber. The vacuum chamber is divided into a chamber body and an upper cover to ensure easy opening/closing operations of the upper cover.
    Type: Application
    Filed: November 26, 2008
    Publication date: April 2, 2009
    Inventors: Young Jong Lee, Jun Young Choi, Saeng Hyun Jo, Hyun Hwan Ahn, Suk-Min Son, Sung Il Ahn
  • Publication number: 20090078373
    Abstract: Disclosed herein is a flat panel display (FPD) manufacturing apparatus for performing a desired process for a substrate positioned in a chamber after establishing a vacuum atmosphere in the chamber. The vacuum chamber is divided into a chamber body and an upper cover to ensure easy opening/closing operations of the upper cover.
    Type: Application
    Filed: November 26, 2008
    Publication date: March 26, 2009
    Inventors: Young Jong LEE, Jun Young Choi, Saeng Hyun Jo, Hyun Hwan Ahn, Suk-Min Son, Sung Il Ahn
  • Publication number: 20090078200
    Abstract: Disclosed herein is a flat panel display (FPD) manufacturing apparatus for performing a desired process for a substrate positioned in a chamber after establishing a vacuum atmosphere in the chamber. The vacuum chamber is divided into a chamber body and an upper cover to ensure easy opening/closing operations of the upper cover.
    Type: Application
    Filed: November 26, 2008
    Publication date: March 26, 2009
    Inventors: Young Jong LEE, Jun Young Choi, Saeng Hyun Jo, Hyun Hwan Ahn, Suk-Min Son, Sung Il Ahn
  • Publication number: 20090025877
    Abstract: Disclosed herein is a flat panel display manufacturing apparatus in a predetermined process is performed using plasma generated therein. In such a flat panel display manufacturing apparatus, a process gas is supplied into a chamber in an evenly diffused state to generate even plasma inside a symmetrical interior space of the chamber. Consequently, the flat panel display manufacturing apparatus can appropriately control flow rate of the plasma, thereby being capable of performing even processing on a large-scale substrate. In the flat panel display manufacturing apparatus, a substrate pedestal thereof is provided with a combination of vertical and horizontal shielding members, thereby being entirely protected from attack of the plasma, resulting in an increased life-span.
    Type: Application
    Filed: October 7, 2008
    Publication date: January 29, 2009
    Inventors: Gwang Ho HUR, Jun Young CHOI, Cheol Won LEE, Hyun Hwan AHN, Young Joo HWANG, Chun Sik KIM
  • Publication number: 20040123952
    Abstract: An FPD fabricating apparatus according to the present invention comprises two chambers of a process chamber 130 and a transfer chamber 120. The substrate 140 is mounted on and transferred by one of two carrier plates 150a and 150b, each of which have a forked shape. The carrier plate lift pins 160b are raised up and fallen down while avoiding contact with the forked prongs of the robot arm 122a, so that the carrier plates 150a and 150b can be raised up and fallen down. The substrate lift pins 160a which are raised up and fallen down while avoiding contact with all the forked prongs of the robot arm 122a and the carrier plates 150a and 150b, so that only the substrate 140 mounted on the carrier plates 150a and 150b can be raised up and fallen down. According to the present invention, a load-lock chamber for transferring a substrate and a transfer chamber is incorporated into a single transfer chamber, so that space of the apparatus can be remarkably reduced and cost of the apparatus can be reduced.
    Type: Application
    Filed: December 5, 2003
    Publication date: July 1, 2004
    Inventors: Gwang Ho Hur, Cheol Won Lee, Jun Young Choi, Hyun Hwan Ahn