Patents by Inventor Ryosuke Asami

Ryosuke Asami 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).

  • Publication number: 20200278608
    Abstract: A problem to be solved by the present invention is to provide a coloring composition which contains a threne compound unlikely to be highly dispersed in glycol solvents used in color filter-preparing steps in recent years, which allows the threne compound to be highly dispersed in a glycol solvent, and which can be used without causing an undesirable influence such as a curing failure in a color filter-preparing step. The above problem is solved by providing a coloring composition containing a specific anthraquinone derivative, a threne compound, and a glycol organic solvent.
    Type: Application
    Filed: November 27, 2018
    Publication date: September 3, 2020
    Applicant: DIC Corporation
    Inventors: Kazushi Suzuki, Ryosuke Asami
  • Patent number: 9951275
    Abstract: A liquid crystal display device which prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and which overcomes problems of defective display such as voids, uneven alignment, and screen burn-in. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and reduces defective display such as screen burn-in; hence, such a liquid crystal display device is particularly useful as liquid crystal display devices of a VA mode and PSVA mode which involve active matrix driving and can be applied to the liquid crystal display devices of liquid crystal TV sets, monitors, mobile phones, and smartphones.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: April 24, 2018
    Assignee: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Junichiro Koike, Hiroshi Maki, Masami Shishikura, Ryosuke Asami
  • Patent number: 9810938
    Abstract: A liquid crystal display device that prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and that resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display has features of preventing a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking. Therefore, the liquid crystal display device is particularly useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices of, for example, liquid crystal televisions, monitors, cellular phones, and smart phones.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: November 7, 2017
    Assignee: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Jouji Kawamura, Hiroshi Maki, Junichiro Koike, Masami Shishikura, Ryosuke Asami
  • Patent number: 9464231
    Abstract: There is provided a liquid crystal display device which prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and which overcomes problems of defective display such as voids, uneven alignment, and screen burn-in. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and reduces defective display such as screen burn-in; hence, such a liquid crystal display device is particularly useful as liquid crystal display devices of a VA mode and PSVA mode which involve active matrix driving and can be applied to the liquid crystal display devices of liquid crystal TV sets, monitors, mobile phones, and smartphones.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: October 11, 2016
    Assignee: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Hiroshi Maki, Junichiro Koike, Masami Shishikura, Ryosuke Asami
  • Patent number: 9436032
    Abstract: There is provided a liquid crystal display device that includes a liquid crystal composition and a color filter having a particular slope parameter that indicates the degree of aggregation of an organic pigment. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking. Therefore, the liquid crystal display device is useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: September 6, 2016
    Assignee: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Jouji Kawamura, Junichiro Koike, Hiroshi Maki, Masami Shishikura, Ryosuke Asami
  • Publication number: 20160252772
    Abstract: The present invention provides a liquid crystal display device that prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and that resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display device of the present invention has features of preventing a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking Therefore, the liquid crystal display device is particularly useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices of, for example, liquid crystal televisions, monitors, cellular phones, and smart phones.
    Type: Application
    Filed: November 29, 2013
    Publication date: September 1, 2016
    Applicant: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Jouji Kawamura, Hiroshi Maki, Junichiro Koike, Masami Shishikura, Ryosuke Asami
  • Publication number: 20160200912
    Abstract: Provided is a light-blocking pigment composition which has high insulation properties and a low dielectric constant and which can satisfy high optical density, and a light-blocking member for display, which contains the light-blocking pigment composition. When a pigment composition containing a benzimidazolone dioxazine-based pigment, a benzimidazolone-based pigment, and a carbazole dioxazine-based pigment in a specific ratio is used for a light-blocking member for display, since the light-blocking member has high insulation properties, a low dielectric constant, and high optical density, it is possible to provide a display having high light-blocking properties.
    Type: Application
    Filed: December 18, 2014
    Publication date: July 14, 2016
    Applicant: DIC Corporation
    Inventors: Kazushi SUZUKI, Ryosuke ASAMI, Ikuro KIYOTO
  • Publication number: 20160054619
    Abstract: There is provided a liquid crystal display device that includes a liquid crystal composition and a color filter having a particular slope parameter that indicates the degree of aggregation of an organic pigment. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking. Therefore, the liquid crystal display device is useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices.
    Type: Application
    Filed: December 24, 2013
    Publication date: February 25, 2016
    Applicant: DIC CORPORATION
    Inventors: Takeshi Kuriyama, Jouji Kawamura, Junichiro Koike, Hiroshi Maki, Masami Shishikura, Ryosuke Asami
  • Publication number: 20160009997
    Abstract: The present invention provides a liquid crystal display device which prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and which overcomes problems of defective display such as voids, uneven alignment, and screen burn-in. The liquid crystal display device of the present invention prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and reduces defective display such as screen burn-in; hence, such a liquid crystal display device is particularly useful as liquid crystal display devices of a VA mode and PSVA mode which involve active matrix driving and can be applied to the liquid crystal display devices of liquid crystal TV sets, monitors, mobile phones, and smartphones.
    Type: Application
    Filed: March 12, 2014
    Publication date: January 14, 2016
    Applicant: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Junichiro Koike, Hiroshi Maki, Masami Shishikura, Ryosuke Asami
  • Publication number: 20150315471
    Abstract: There is provided a liquid crystal display device which prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and which overcomes problems of defective display such as voids, uneven alignment, and screen burn-in. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and reduces defective display such as screen burn-in; hence, such a liquid crystal display device is particularly useful as liquid crystal display devices of a VA mode and PSVA mode which involve active matrix driving and can be applied to the liquid crystal display devices of liquid crystal TV sets, monitors, mobile phones, and smartphones.
    Type: Application
    Filed: March 12, 2014
    Publication date: November 5, 2015
    Applicant: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Hiroshi Maki, Junichiro Koike, Masami Shishikura, Ryosuke Asami