Patents by Inventor Seong Ho Youn

Seong Ho Youn 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: 8162501
    Abstract: A display device including a plurality of light sources spaced apart from one another, a refracting plate disposed over the plurality of light sources, and first and second refracting surfaces formed at both surfaces of the refracting plate to allow light emitted from the light sources to be scattered plural times by passing through the refracting plate, the first and second refracting surfaces having different shapes from each other. With the display device, light emitted from the light sources can be uniformly diffused, whereby high brightness uniformity can be accomplished even at positions relatively close to the light source, resulting in a reduction in a thickness of the display device.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Heon Noh, Jong Il Kim, Dong Seob Jang, Seong Ho Youn
  • Patent number: 7896534
    Abstract: A back light unit and a manufacturing method thereof capable of improving efficiency of a manufacturing process are disclosed. The back light unit includes a light source, a light guiding plate which uniformly transmits a light beam generated by the light source, and a cover portion which forms an external appearance and fixes the light guiding plate, wherein a resin material is charged between the light guiding plate and the cover portion to couple the light guiding plate and the cover portion.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: March 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Jong Il Kim, Sun Gil Kim, Chang Hyun Kim
  • Patent number: 7632003
    Abstract: A back light unit, in which bright lines produced from point light sources, light emitting diodes, in an oblique direction are removed, so that brightness can be uniformly maintained at a liquid crystal panel. The back light unit includes a prism light guide plate, light emitting diodes provided on one side of the prism light guide plate, and a bright-line dead section provided to the prism light guide plate so as to uniformly scatter light of each light condensing section generated by light emitted from the light emitting diodes, to prevent a spectrum of the light in a specific direction, and to prevent bright lines from being produced.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: December 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Sun Gil Kim, Hye Eun Park, Yong Joon Choi, Kyong Hak Seo
  • Publication number: 20090268432
    Abstract: A display device including a plurality of light sources spaced apart from one another, a refracting plate disposed over the plurality of light sources, and first and second refracting surfaces formed at both surfaces of the refracting plate to allow light emitted from the light sources to be scattered plural times by passing through the refracting plate, the first and second refracting surfaces having different shapes from each other. With the display device, light emitted from the light sources can be uniformly diffused, whereby high brightness uniformity can be accomplished even at positions relatively close to the light source, resulting in a reduction in a thickness of the display device.
    Type: Application
    Filed: February 10, 2009
    Publication date: October 29, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Heon Noh, Jong II Kim, Dong Seob Jang, Seong Ho Youn
  • Publication number: 20090067193
    Abstract: A back light unit and a manufacturing method thereof capable of improving efficiency of a manufacturing process are disclosed. The back light unit includes a light source, a light guiding plate which uniformly transmits a light beam generated by the light source, and a cover portion which forms an external appearance and fixes the light guiding plate, wherein a resin material is charged between the light guiding plate and the cover portion to couple the light guiding plate and the cover portion.
    Type: Application
    Filed: June 10, 2008
    Publication date: March 12, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Jong II Kim, Sun Gil Kim, Chang Hyun Kim
  • Publication number: 20080112185
    Abstract: A back light unit, in which bright lines produced from point light sources, light emitting diodes, in an oblique direction are removed, so that brightness can be uniformly maintained at a liquid crystal panel. The back light unit includes a prism light guide plate, light emitting diodes provided on one side of the prism light guide plate, and a bright-line dead section provided to the prism light guide plate so as to uniformly scatter light of each light condensing section generated by light emitted from the light emitting diodes, to prevent a spectrum of the light in a specific direction, and to prevent bright lines from being produced.
    Type: Application
    Filed: September 7, 2007
    Publication date: May 15, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae Heon Noh, Dong Seob Jang, Seong Ho Youn, Sun Gil Kim, Hye Eun Park, Yong Joon Choi, Kyong Hak Seo
  • Publication number: 20070115660
    Abstract: A backlight unit usable in an LCD includes a point light source circuit board, a plurality of point light sources seated on the point light source circuit board, and a diffusion lens provided on each point light source and comprising a depressed point and a curved surface radially protruding from the depressed point.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 24, 2007
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Seung-jae Lee, Dong-seob Jang, Seong-ho Youn, Chang-ju Kim, Sun-gil Kim, Hye-eun Park, Gi-su Kim
  • Publication number: 20070035679
    Abstract: A backlight unit for a LCD panel includes a point light source circuit board, a plurality of point light sources mounted on the point light source circuit board, and an optical plate disposed on an upper part of the point light source and having a Fresnel lens formed on a planar surface the optical plate. Accordingly the back light unit has a good light emitting efficiency.
    Type: Application
    Filed: August 8, 2006
    Publication date: February 15, 2007
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Seung-jae Lee, Dong-seob Jang, Seong-ho Youn, Chang-ju Kim, Hye-eun Park
  • Publication number: 20070019394
    Abstract: A backlight unit includes a point light source circuit board, a plurality of point light sources mounted onto the point light source circuit board, and an optical plate having a first surface that faces toward the point light source and is formed with an accommodating part to accommodate the point light source.
    Type: Application
    Filed: April 26, 2006
    Publication date: January 25, 2007
    Inventors: Hye-eun Park, Dong-seob Jang, Seong-ho Youn, Chang-ju Kim, Seung-jae Lee
  • Publication number: 20060244877
    Abstract: An LCD includes an LCD panel, a light guiding plate including a light guiding plate main body disposed behind the LCD panel and a reflective polarizing layer formed on a surface of the light guiding plate main body to face the LCD panel, and a light source disposed on at least one side of the light guiding plate. The LCD has a high light efficiency by using a light guiding plate since a reflective polarizing layer is formed on the light guiding plate.
    Type: Application
    Filed: November 22, 2005
    Publication date: November 2, 2006
    Inventors: Jae-heon Noh, Su-dong Moon, Young-min Seo, In-youl Seo, Dong-seob Jang, Yong-joon Choi, Seong-ho Youn