Patents by Inventor O Bum Kwon

O Bum Kwon 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: 8389621
    Abstract: A thermosetting resin composition for producing a color filter for a CMOS image sensor is provided. The thermosetting resin composition comprises an organic solvent and a self-curing copolymer having structural units represented by Formulae 1, 2, 3 and 4, which are described in the specification.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 5, 2013
    Assignee: Cheil Industries Inc.
    Inventors: O Bum Kwon, Kil Sung Lee, Jae Hyun Kim, Jung Hyun Kim
  • Patent number: 7847013
    Abstract: A thermosetting resin composition for producing a color filter for a CMOS image sensor is provided. The thermosetting resin composition comprises an organic solvent and a self-curing copolymer having structural units represented by Formulae 1, 2, 3 and 4, which are described in the specification.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: December 7, 2010
    Assignee: Cheil Industries Inc.
    Inventors: O Bum Kwon, Kil Sung Lee, Jae Hyun Kim, Jung Hyun Kim
  • Patent number: 7790836
    Abstract: Disclosed herein is a novel functional diamine compound having a dendron structure, polyamic acid which is produced using functional diamine, aromatic cyclic diamine, aliphatic cyclic acid dianhydride, and aromatic cyclic acid dianhydride, polyimide which is produced by imidizing polyamic acid, and an LC alignment film produced using polyimide. Even if the diamine compound is used in a small amount, it is possible to realize a high pretilt angle, thus the pretilt angle is easily controlled. Therefore, it can be used to produce an LC alignment film using a twisted nematic (TN) mode, in which the pretilt angle of liquid crystal is low, and a vertically aligned (VA) mode, which requires a high pretilt angle of about 90°.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: September 7, 2010
    Assignee: Cheil Industries Inc.
    Inventors: Jae Min Oh, Moo Young Lee, Bum Jin Lee, O Bum Kwon, Won Seok Dong, Yusuke Tsuda
  • Patent number: 7722932
    Abstract: Provided herein are one-solution type thermosetting resin compositions that may be useful to form protective films for color filters used in liquid crystal displays or image sensors. According to some embodiments, the resin compositions may include a self-curable copolymer and an epoxy compound. The protective films may exhibit desirable flatness, adhesiveness, transmittance, heat resistance and chemical resistance. Also provided are methods of forming a film on a substrate, and substrates having a film formed thereon. In addition, provided herein are color filters including a film formed from a composition according to an embodiment of the invention, and liquid crystal displays and image sensors including such color filters.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: May 25, 2010
    Assignee: Cheil Industries, Inc.
    Inventors: O Bum Kwon, Hyun Moon Choi, Sun Yul Lee, Kil Sung Lee
  • Patent number: 7635746
    Abstract: Diamine compound containing specific triazine group, polyamic acid obtained by reacting the diamine compound and tetracarboxylic dianhydride, and liquid crystal alignment film obtained by coating and imidizing the polyamic acid. The liquid crystal alignment film has good heat-resistance, high transparency in visible light region and improved voltage holding ratio. Also, pretilt angle is easily controlled over broad range.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: December 22, 2009
    Assignee: Cheil Industries Inc.
    Inventors: Jae Min Oh, Bum Jin Lee, Moo Young Lee, O Bum Kwon, Joon Suk Oh, Dong Won Park, Chul Hee Kim
  • Publication number: 20080319145
    Abstract: A thermosetting resin composition for producing a color filter for a CMOS image sensor is provided. The thermosetting resin composition comprises an organic solvent and a self-curing copolymer having structural units represented by Formulae 1, 2, 3 and 4, which are described in the specification.
    Type: Application
    Filed: May 7, 2008
    Publication date: December 25, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: O Bum Kwon, Kil Sung Lee, Jae Hyun Kim, Jung Hyun Kim
  • Patent number: 7408020
    Abstract: Disclosed herein is an LC aligning agent using diamine having dendron side chains. In detail, the present invention relates to a composition for an LC alignment film which employs diamine having dendron side chains to produce polyamic acid, followed by imidization. When the LC alignment film is applied to a liquid crystal display device, high heat resistance, high penetration in a visible ray range, excellent alignment, and a high voltage holding ratio are assured. Even though it contains a small amount of functional diamine, a high pretilt angle can be assured. Thus, the pretilt angle is easily controlled and a vertical aligning force is improved.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: August 5, 2008
    Assignee: Cheil Industries Inc.
    Inventors: Jae Min Oh, O Bum Kwon, Won Seok Dong, Bum Jin Lee, Jong Seob Kim
  • Publication number: 20060149028
    Abstract: Diamine compound containing specific triazine group, polyamic acid obtained by reacting the diamine compound and tetracarboxylic dianhydride, and liquid crystal alignment film obtained by coating and imidizing the polyamic acid. The liquid crystal alignment film has good heat-resistance, high transparency in visible light region and improved voltage holding ratio. Also, pretilt angle is easily controlled over broad range.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 6, 2006
    Inventors: Jae Oh, Bum Lee, Moo Lee, O Bum Kwon, Joon Oh, Dong Won Park, Chul Kim