Patents by Inventor Byung Duck Song

Byung Duck Song 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).

  • Exposure method and exposure apparatus for photosensitive film
    Patent number: 8531647
    Abstract: An exposure apparatus for a photosensitive film includes: light-emitting diodes for generating rays to expose a photosensitive film; a light shield positioned between the light-emitting diodes to prevent noise; a stage for receiving a substrate having the photosensitive film thereon; and a parallelizer positioned between the light-emitting diodes and the stage for redirecting the rays from the light-emitting diodes to be perpendicularly incident upon the photosensitive film.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: September 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Il Kim, Byung Duck Song, Jong Dam Kim
  • Large scale polarizer and polarizer system employing it
    Patent number: 7911696
    Abstract: A large scale polarizer having one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer includes a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: March 22, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Exposure method and exposure apparatus for photosensitive film
    Publication number: 20090168035
    Abstract: An exposure apparatus for a photosensitive film includes: light-emitting diodes for generating rays to expose a photosensitive film; a light shield positioned between the light-emitting diodes to prevent noise; a stage for receiving a substrate having the photosensitive film thereon; and a parallelizer positioned between the light-emitting diodes and the stage for redirecting the rays from the light-emitting diodes to be perpendicularly incident upon the photosensitive film.
    Type: Application
    Filed: July 9, 2008
    Publication date: July 2, 2009
    Applicant: LG.DISPLAY CO., LTD.
    Inventors: Jong Ii Kim, Byung Duck Song, Jong Dam Kim
  • Light irradiating device
    Patent number: 7061679
    Abstract: A light irradiating device for a photo-alignment process comprises an optical system and a first polarizer polarizing the light from the optical system. The light from the first polarizer is obliquely irradiated at an angle with respect to a normal direction of a stage on which a substrate is placed.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 13, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ki Hyuk Yoon, Young Seok Choi, Byung Duck Song, Soon Bum Kwon
  • Large scale polarizer and polarizer system employing it
    Patent number: 7016113
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: March 21, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Large scale polarizer and polarizer system employing it
    Patent number: 7016112
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: March 21, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Large scale polarizer and polarizer system employing it
    Patent number: 6639720
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: October 28, 2003
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Large scale polarizer and polarizer system employing it
    Publication number: 20020176168
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Application
    Filed: July 3, 2002
    Publication date: November 28, 2002
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Large scale polarizer and polarizer system employing it
    Publication number: 20020145799
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Application
    Filed: May 30, 2002
    Publication date: October 10, 2002
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Large scale polarizer and polarizer system employing it
    Publication number: 20020141059
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Application
    Filed: May 30, 2002
    Publication date: October 3, 2002
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon
  • Large scale polarizer and polarizer system employing it
    Patent number: 6292296
    Abstract: A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a, lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: September 18, 2001
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Jae Beom Choi, Byung Duck Song, Ki Hyuk Yoon