Patents by Inventor Nobuyuki HATANAKA

Nobuyuki HATANAKA 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: 10690953
    Abstract: A polarizing plate including a substrate and a polarizer is provided. The polarizer has a polarizing layer having a thickness of 5 ?m or less in which a dichroic dye is oriented. The absorbance in the absorption axis direction (A1) of the polarizer at a wavelength of 380 to 760 nm is 0.3 or more and 1.5 or less, and the absorbance in the transmission axis direction (A2) is 0.001 or more and 0.15 or less.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 23, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Nobuyuki Hatanaka
  • Patent number: 10670787
    Abstract: As a liquid crystal cured film that is small in amount of decrease in phase difference value which decrease is caused in a case where the liquid crystalline cured film is exposed to a high-temperature environment, provided is a liquid crystal cured film containing a polymerizable liquid crystal compound that is polymerized, the liquid crystal cured film having a maximum absorption at a wavelength in a range of not less than 300 nm and not more than 380 nm, and satisfying the following Formula (Y): (1?P?/P0)×100?73 . . . (Y).
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: June 2, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tatsuaki Kasai, Nobuyuki Hatanaka
  • Publication number: 20200165519
    Abstract: A polymerizable liquid crystal composition containing two polymerizable liquid crystal compounds (A) and (B) is provided. A polymer of compound (A) exhibits a reverse wavelength dispersion property and the phase difference value [R(A,3000,450)] at a wavelength of 450 nm measured after irradiation in an oriented state with ultraviolet ray at 3000 mJ/cm2 varies in a positive sense relative to the phase difference value [R(A,500,450)] at a wavelength of 450 nm measured after irradiation in an oriented state with ultraviolet ray at 500 mJ/cm2. A polymer of compound (B) exhibits a reverse wavelength dispersion property and the phase difference value [R(B,3000,450)] at a wavelength of 450 nm measured after irradiation in an oriented state with ultraviolet ray at 3000 mJ/cm2 varies in a negative sense relative to the phase difference value [R(B,500,450)] at a wavelength of 450 nm measured after irradiation in an oriented state with ultraviolet ray at 500 mJ/cm2.
    Type: Application
    Filed: May 17, 2018
    Publication date: May 28, 2020
    Inventors: Naoko INUI, Nobuyuki HATANAKA, Tatsuaki KASAI, Hikari DEZAKI
  • Patent number: 10634833
    Abstract: As a liquid crystal cured film that is small in amount of decrease in phase difference value which decrease is caused in a case where the liquid crystalline cured film is exposed to a high-temperature environment, provided is a liquid crystal cured film containing a polymerizable liquid crystal compound that is polymerized, the liquid crystal cured film having a maximum absorption at a wavelength in a range of not less than 300 nm and not more than 380 nm, and satisfying the following Formula (Y): (1?P?/P0)×100?73 . . . (Y).
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 28, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tatsuaki Kasai, Nobuyuki Hatanaka
  • Patent number: 10598836
    Abstract: The laminated body of the present invention includes an optically anisotropic layer, an alignment film, and an adhesive agent layer which are laminated in this order. The optically anisotropic layer has maximum absorptions at a wavelength in a range of not less than 300 nm and not more than 380 nm and satisfies Formula (Y) below. “50<(1?P?/P0)×100<85 . . . (Y)” wherein: P? represents a P value in a surface of the optically anisotropic layer on which surface the alignment film is laminated and which surface is perpendicular to a thickness direction; and P0 represents the P value of the polymerizable liquid crystal compound.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: March 24, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki Hatanaka, Tatsuaki Kasai
  • Patent number: 10557978
    Abstract: The present invention provides, as a composition containing a smectic liquid crystal compound which can be used for production of a homogeneous optical film at a temperature around room temperature, a composition containing a smectic liquid crystal compound having a 1,4-cyclohexyl group, which smectic liquid crystal compound having the 1,4-cyclohexyl group contains (i) 100 parts by mass of a smectic liquid crystal compound having a trans-1,4-cyclohexyl group and (ii) 0.1 parts by mass to 10 parts by mass of a smectic liquid crystal compound having a cis-1,4-cyclohexyl group.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: February 11, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki Hatanaka, Haruki Okawa
  • Publication number: 20190355576
    Abstract: This method comprises: a first step for raising the temperature of an object on which a film is being formed to at least 200° C. and changing from a first state in which a film-forming material and a carrier gas are supplied to the object on which the film is being formed to deposit the film-forming material on the object on which the film is being formed to a second state in which the supply of the film-forming material is eliminated from the first state; and a second step for raising the temperature of the object on which the film is being formed to at least 200° C. and changing from a third state in which hydrogen gas and a carrier gas are supplied to the object on which the film is being formed to reduce the film-forming material to a fourth state in which the supply of the hydrogen gas is eliminated from the third state. The film-forming material is any one material selected from the group consisting of Al(CxH2x+1)3, Al(CxH2x+1)2H, and Al(CxH2x+1)2Cl.
    Type: Application
    Filed: May 11, 2018
    Publication date: November 21, 2019
    Inventors: Masanobu HATANAKA, Yohei OGAWA, Keon-chang LEE, Nobuyuki KATO, Takakazu YAMADA, John ROZEN
  • Publication number: 20190094433
    Abstract: An object of the present invention is to solve the problems which can be peculiarly generated in a coating-type optical film, and provide an optical film which hardly causes deterioration in optical performance with time, a display device equipped with the optical film, and a process for producing the optical film, and there is provided a polarizing plate having a diffusion preventing layer A having the thickness of 0.05 ?m to 3 ?m, a polarizing film comprising a polymer of a polymerizable liquid crystal and a dichroic coloring matter, and a diffusion preventing layer B having the thickness of 0.05 ?m to 3 ?m, in this order.
    Type: Application
    Filed: November 13, 2018
    Publication date: March 28, 2019
    Inventors: Nobuyuki HATANAKA, Yosuke OTA
  • Patent number: 10145997
    Abstract: An object is to solve the problems which can be peculiarly generated in a coating-type optical film, and provide an optical film which hardly causes deterioration in optical performance over time. A display device equipped with the optical film, and a process for producing the optical film are also provided. There is provided a polarizing plate having a diffusion preventing layer A having a thickness of 0.05 ?m to 3 ?m, a polarizing film containing a polymer of a polymerizable liquid crystal and a dichroic coloring matter, and a diffusion preventing layer B having a thickness of 0.05 ?m to 3 ?m, in this order.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: December 4, 2018
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Nobuyuki Hatanaka, Yosuke Ota
  • Patent number: 10139540
    Abstract: To provide an optical film excellent in suppression of light leakage in black display. An optical film having at least two phase difference layers and having optical properties represented by the formulae (30) and (31) is provided: ?2.0?a*?0.5??(30) ?0.5?b*?5.0??(31) wherein, a* and b* represent the chromatic coordinate in the L*a*b* color system.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: November 27, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki Hatanaka, Akira Yokota, Tadahiro Kobayashi, Mitsutaka Sase, Yoshifumi Komatsu
  • Patent number: 10132973
    Abstract: An elliptically polarizing plate includes a polarizing plate and a retardation plate. The elliptically polarizing plate satisfies the following: 0.8?P(450)/P(650)?1.2 P(550)?0.7 Re(450)<Re(550)<Re(650) 0.05<1?P(450)<0.3 Re(550) and Re(650) represent the front retardation at wavelengths (?) of 450 nm, 550 nm and 650 nm, respectively. P(450), P(550) and P(650) represent the elliptically polarized light states (P(?)) at wavelengths (?) of 450 nm, 550 nm and 650 nm, respectively. P(?)=tan {sin?1(I1(?)×sin ?(?)×sin 2??I2(?)×sin ?(?)×cos 2?)/I2(?))/2}. I1(?)=(10?A1(?)?10?A2(?))/2. I2(?)=(10?A1(?)+10?A2(?))/2. ?(?)=Re(?)/?×2?. A1(?) and A2(?) represent the absorbance in the transmission and adsorption axis directions, respectively, of the polarizing plate at wavelength (?). Re(?) represents the front retardation at wavelength (?). ? represents the angle formed by the polarizing plate absorption axis and the retardation plate slow axis.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 20, 2018
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Nobuyuki Hatanaka
  • Publication number: 20180067348
    Abstract: A polarizing plate including a substrate and a polarizer is provided. The polarizer has a polarizing layer having a thickness of 5 ?m or less in which a dichroic dye is oriented. The absorbance in the absorption axis direction (A1) of the polarizer at a wavelength of 380 to 760 nm is 0.3 or more and 1.5 or less, and the absorbance in the transmission axis direction (A2) is 0.001 or more and 0.15 or less.
    Type: Application
    Filed: March 8, 2016
    Publication date: March 8, 2018
    Inventor: Nobuyuki HATANAKA
  • Publication number: 20170269271
    Abstract: An elliptically polarizing plate includes a polarizing plate and a retardation plate. The elliptically polarizing plate satisfies the following: 0.8?P(450)/P(650)?1.2 P(550)?0.7 Re(450)<Re(550)<Re(650) 0.05<1?P(450)<0.3 Re(550) and Re(650) represent the front retardation at wavelengths (?) of 450 nm, 550 nm and 650 nm, respectively. P(450), P(550) and P(650) represent the elliptically polarized light states (P(?)) at wavelengths (?) of 450 nm, 550 nm and 650 nm, respectively. P(?)=tan {sin?1(I1(?)×sin ?(?)×sin 2??I2(?)×sin ?(?)×cos 2?)/I2(?))/2}. I1(?)=(10?A1(?)?10?A2(?))/2. I2(?)=(10?A1(?)+10?A2(?))/2. ?(?)=Re(?)/?×2?. A1(?) and A2(?) represent the absorbance in the transmission and adsorption axis directions, respectively, of the polarizing plate at wavelength (?). Re(?) represents the front retardation at wavelength (?). ? represents the angle formed by the polarizing plate absorption axis and the retardation plate slow axis.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Inventor: Nobuyuki HATANAKA
  • Patent number: 9696475
    Abstract: To provide an optical film excellent in suppression of light leakage in black display. An optical film having a first phase difference layer and a second phase difference layer, wherein the second phase difference layer has an optical property represented by the formula (3), the second phase difference layer has a thickness of 0.2 ?m to 2.0 ?m, and further, the optical film has optical properties represented by the formulae (1) and (2): Re(450)/Re(550)?1.00??(1) 1.00?Re(650)/Re(550)??(2) nx?ny<nz??(3).
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 4, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki Hatanaka, Akira Yokota, Tadahiro Kobayashi, Mitsutaka Sase, Yoshifumi Komatsu
  • Publication number: 20170184767
    Abstract: Disclosed is a retardation film which shows a high light selective absorbency to visible rays having short wavelengths near 400 nm to have a high light resistance, and which can give, when used in a display device, good display properties to the display device. This film is a retardation film, satisfying all of the following formulae (1) to (4): 2?A(380) (1), 0.5?A(400) (2), 0.4?A(420)/A(400) (3), and 100 nm?Re(550)?170 nm (4), in which each A(?) represents the absorbance of the film at a wavelength ? nm, and Re (550) represents the in-plane retardation value of the film to a light ray having a wavelength of 550 nm.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Inventors: Nobuyuki HATANAKA, Shinnosuke YOSHIOKA, Shoichi OZAWA, Tatsuaki KASAI
  • Publication number: 20170123124
    Abstract: An object is to solve the problems which can be peculiarly generated in a coating-type optical film, and provide an optical film which hardly causes deterioration in optical performance over time. A display device equipped with the optical film, and a process for producing the optical film are also provided. There is provided a polarizing plate having a diffusion preventing layer A having a thickness of 0.05 ?m to 3 ?m, a polarizing film containing a polymer of a polymerizable liquid crystal and a dichroic coloring matter, and a diffusion preventing layer B having a thickness of 0.05 ?m to 3 ?m, in this order.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Inventors: Nobuyuki HATANAKA, Yosuke OTA
  • Patent number: 9599759
    Abstract: A patterned polarizing film is provided for obtaining a thin patterned circular polarizing plate having a superior anti-reflection property. The film includes a substrate and a patterned liquid crystal cured layer laminated thereon. The layer contains a polymer of a polymerizable liquid crystal compound(s) and a dichroic dye. The patterned polarizing film includes a region (A) having a degree of polarization of 10% or lower and a single transmittance of 80% or higher, and a region (B) having a degree of polarization of 90% or higher and a single transmittance of 40% or higher.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 21, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Nobuyuki Hatanaka
  • Publication number: 20170022416
    Abstract: As a liquid crystal cured film that is small in amount of decrease in phase difference value which decrease is caused in a case where the liquid crystalline cured film is exposed to a high-temperature environment, provided is a liquid crystal cured film containing a polymerizable liquid crystal compound that is polymerized, the liquid crystal cured film having a maximum absorption at a wavelength in a range of not less than 300 nm and not more than 380 nm, and satisfying the following Formula (Y): (1?P?/P0)×100?73 . . .
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tatsuaki KASAI, Nobuyuki HATANAKA
  • Publication number: 20170023717
    Abstract: The laminated body of the present invention includes an optically anisotropic layer, an alignment film, and an adhesive agent layer which are laminated in this order. The optically anisotropic layer has maximum absorptions at a wavelength in a range of not less than 300 nm and not more than 380 nm and satisfies Formula (Y) below. The laminated body brings about an effect of hardly causing a decrease in optical characteristic of the optically anisotropic layer in a case where the laminated body is exposed to a high-temperature environment. “50<(1?P?/P0)×100<85 . . . (Y)” wherein: P? represents a P value in a surface of the optically anisotropic layer on which surface the alignment film is laminated and which surface is perpendicular to a thickness direction; and P0 represents the P value of the polymerizable liquid crystal compound.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Tatsuaki KASAI
  • Publication number: 20170022417
    Abstract: The present invention provides, as a composition containing a smectic liquid crystal compound which can be used for production of a homogeneous optical film at a temperature around room temperature, a composition containing a smectic liquid crystal compound having a 1,4-cyclohexyl group, which smectic liquid crystal compound having the 1,4-cyclohexyl group contains (i) 100 parts by mass of a smectic liquid crystal compound having a trans-1,4-cyclohexyl group and (ii) 0.1 parts by mass to 10 parts by mass of a smectic liquid crystal compound having a cis-1,4-cyclohexyl group.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nobuyuki HATANAKA, Haruki OKAWA