Patents by Inventor Hyun Cheol Nam

Hyun Cheol Nam 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: 10247980
    Abstract: The present invention relates to a film capable of enhancing color purity and correcting brightness for a liquid crystal display device, and a liquid crystal display device comprising the same, and can provide a liquid crystal display device having enhanced color gamut and color purity by introducing, to the inside of an adhesive layer or a coating layer of the liquid crystal display device, a combination of an absorption dye for absorbing a specific wavelength band and a fluorescent dye absorbing a specific wavelength band and emitting light, thereby blocking unnecessary wavelengths except for RGB wavelengths.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: April 2, 2019
    Assignee: SKC HI-TECH & MARKETING CO., LTD.
    Inventors: Hong Youl Cho, Kyoo Choong Cho, Hyun Cheol Nam
  • Patent number: 10133110
    Abstract: The present invention relates to a color purity improvement film (a color gamut enhancing film) that can improve the color purity of a liquid crystal display device, and a liquid crystal display device having the same. According to the present invention, a liquid crystal display device that blocks unnecessary wavelengths other than RGB wavelengths so as to improve color gamut and color purity may be provided by introducing a combination of dyes that absorb a particular Wavelength band to the inside of an adhesion layer or a coating layer of a as liquid crystal display device.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: November 20, 2018
    Assignee: SKC HI-TECH & MARKETING CO., LTD.
    Inventors: Hong Youl Cho, Kyoo Choong Cho, Hyun Cheol Nam, Sue Yoen Lee
  • Patent number: 10048430
    Abstract: The present invention relates to a liquid crystal display comprising an absorption dye, wherein the liquid crystal display of the present invention may enhance color gamut and brightness by transmitting pure red, green, and blue (RGB) wavelengths emitted from a light source as much as possible and absorbing unnecessary wavelengths other than the RGB wavelengths.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: August 14, 2018
    Assignee: SKC HI-TECH & MARKETING CO., LTD.
    Inventors: Hong Youl Cho, Kyoo Choong Cho, Yong Jae Choe, Hyun Cheol Nam
  • Patent number: 10012787
    Abstract: The present disclosure relates to a liquid crystal display comprising K—Si—F-based phosphors and a color gamut enhancing film, wherein the liquid crystal display of the present invention can improve a color gamut by transmitting pure RGB wavelengths emitted from a light source as much as possible and absorbing unnecessary wavelengths other than the RGB wavelengths.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: July 3, 2018
    Assignee: SKC HI-TECH & MARKETING CO., LTD.
    Inventors: Hong Youl Cho, Kyoo Choong Cho, Hyun Cheol Nam
  • Patent number: 9971191
    Abstract: The present invention relates to a liquid crystal display comprising a quantum dot sheet and a color gamut enhancing film, wherein the liquid crystal display of the present invention can improve a color gamut by transmitting pure RGB (red, green, and blue) wavelengths emitted from a light source as much as possible and absorbing unnecessary wavelengths other than the RGB wavelengths.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: May 15, 2018
    Assignee: SKC HI-TECH & MARKETING CO., LTD.
    Inventors: Hong Youl Cho, Kyoo Choong Cho, Hyun Cheol Nam
  • Publication number: 20170329179
    Abstract: The present invention relates to a film capable of enhancing color purity and correcting brightness for a liquid crystal display device, and a liquid crystal display device comprising the same, and can provide a liquid crystal display device having enhanced color gamut and color purity by introducing, to the inside of an adhesive layer or a coating layer of the liquid crystal display device, a combination of an absorption dye for absorbing a specific wavelength band and a fluorescent dye absorbing a specific wavelength band and emitting light, thereby blocking unnecessary wavelengths except for RGB wavelengths.
    Type: Application
    Filed: March 30, 2015
    Publication date: November 16, 2017
    Inventors: Hong Youl CHO, Kyoo Choong CHO, Hyun Cheol NAM
  • Publication number: 20170285247
    Abstract: The present disclosure relates to a liquid crystal display comprising K—Si—F-based phosphors and a color gamut enhancing film, wherein the liquid crystal display of the present invention can improve a color gamut by transmitting pure RGB wavelengths emitted from a light source as much as possible and absorbing unnecessary wavelengths other than the RGB wavelengths.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Inventors: Hong Youl CHO, Kyoo Choong CHO, Hyun Cheol NAM
  • Publication number: 20170285248
    Abstract: The present invention relates to a liquid crystal display comprising an absorption dye, wherein the liquid crystal display of the present invention may enhance color gamut and brightness by transmitting pure red, green, and blue (RGB) wavelengths emitted from a light source as much as possible and absorbing unnecessary wavelengths other than the RGB wavelengths.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Inventors: Hong Youl CHO, Kyoo Choong CHO, Yong Jae CHOE, Hyun Cheol NAM
  • Publication number: 20170205646
    Abstract: The present invention relates to a colour purity improvement film (a color gamut enhancing film) that can improve the colour purity of a liquid crystal display device, and a liquid crystal display device having the same. According to the present invention, a liquid crystal display device that blocks unnecessary wavelengths other than RGB wavelengths so as to improve colour gamut and colour purity may be provided by introducing a combination of dyes that absorb a particular Wavelength band to the inside of an adhesion layer or a coating layer of a as liquid crystal display device.
    Type: Application
    Filed: April 10, 2015
    Publication date: July 20, 2017
    Inventors: Hong Youl CHO, Kyoo Choong CHO, Hyun Cheol NAM, Sue Yoen LEE
  • Publication number: 20170205664
    Abstract: The present invention relates to a liquid crystal display comprising a quantum dot sheet and a color gamut enhancing film, wherein the liquid crystal display of the present invention can improve a color gamut by transmitting pure RGB (red, green, and blue) wavelengths emitted from a light source as much as possible and absorbing unnecessary wavelengths other than the RGB wavelengths.
    Type: Application
    Filed: January 17, 2017
    Publication date: July 20, 2017
    Inventors: Hong Youl CHO, Kyoo Choong CHO, Hyun Cheol NAM
  • Patent number: 9157599
    Abstract: Disclosed is an LED lighting system comprising a housing equipped with a transparent substrate as an illuminating side, an LED light source located in the housing, and a haze-changeable film attached to the transparent substrate, wherein the transparency of the haze-changeable film changes depending on the application of electric power and the haze-changeable film has a haze on light varying with the intensity of an applied voltage/current. The LED lighting system may be useful for interior emotional lighting because a direct/indirect lighting and a mixed lighting thereof can be provided with a single system and various correlated color temperatures can be produced with a single LED light source.
    Type: Grant
    Filed: February 9, 2013
    Date of Patent: October 13, 2015
    Assignee: SKC DISPLAY FILMS CO., LTD.
    Inventors: Hyun Seok Cho, Hyung Joon Paik, Hyo Gil Cha, Chang Ho Kang, Hyun Cheol Nam