Patents by Inventor Eiichiro Aminaka
Eiichiro Aminaka 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).
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Publication number: 20230118336Abstract: Provided is a viewing angle control system and an image display device which are capable of controlling the viewing angle of a display screen in a longitudinal direction and improving the visibility in a specific lateral direction. The viewing angle control system includes a polarizer, and a light absorption anisotropic layer, in which the polarizer has an in-plane absorption axis in a film, an angle ? between a transmittance central axis of the light absorption anisotropic layer and a normal line of the film is in a range of 0.1° to 45°, and an angle ? between a direction in which the transmittance central axis of the light absorption anisotropic layer is orthographically projected onto the film surface and the absorption axis of the polarizer is 0° or greater and less than 85°, greater than 95° and less than 265°, or greater than 275° and 360° or less.Type: ApplicationFiled: November 3, 2022Publication date: April 20, 2023Applicant: FUJIFILM CorporationInventors: Shinichi YOSHINARI, Eiichiro AMINAKA, Naoya NISHIMURA, Naoya SHIBATA, Shinya WATANABE
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Patent number: 11249323Abstract: An optical film includes a cholesteric liquid crystal layer formed in a stripe-shaped pattern in which an optically anisotropic region having optical anisotropy and an optically isotropic region having optical isotropy are alternately disposed, a helical axis of a cholesteric liquid crystal in the optically anisotropic region is oriented in one axial direction tin a plane of the optical film, and the helical axis is oriented in a normal direction t of a boundary surface between the optically anisotropic region and the optically isotropic region.Type: GrantFiled: October 16, 2019Date of Patent: February 15, 2022Assignee: FUJIFILM CorporationInventors: Yukito Saitoh, Daisuke Kashiwagi, Hirofumi Toyama, Naoyoshi Yamada, Takashi Yonemoto, Eiichiro Aminaka
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Publication number: 20200050009Abstract: An optical film includes a cholesteric liquid crystal layer formed in a stripe-shaped pattern in which an optically anisotropic region having optical anisotropy and an optically isotropic region having optical isotropy are alternately disposed, a helical axis of a cholesteric liquid crystal in the optically anisotropic region is oriented in one axial direction tin a plane of the optical film, and the helical axis is oriented in a normal direction t of a boundary surface between the optically anisotropic region and the optically isotropic region.Type: ApplicationFiled: October 16, 2019Publication date: February 13, 2020Applicant: FUJIFILM CorporationInventors: Yukito SAITOH, Daisuke KASHIWAGI, Hirofumi TOYAMA, Naoyoshi YAMADA, Takashi YONEMOTO, Eiichiro AMINAKA
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Publication number: 20130068133Abstract: A cellulose ester film includes at least one polyester; and a cellulose ester having a degree of substitution of 2.0 to 2.6. A weight average molecular weight of the polyester is 1,500 or less, and a ratio of components having a molecular weight of 500 or less in the polyester is less than 8%.Type: ApplicationFiled: September 12, 2012Publication date: March 21, 2013Applicant: FUJIFILM CORPORATIONInventors: Shusuke ARITA, Hirofumi TOYAMA, Junichi SATO, Eiichiro AMINAKA
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Patent number: 8233116Abstract: To provide a polarizing plate which is adjusted in curling so as to cause no defectives during sticking to a liquid crystal cell while maintaining a high optical compensation capacity and a liquid crystal display comprising the polarizing plate excellent in viewing angle properties, a polarizing plate is provided and has a polarizing film and a protective film, which curls in an amount of from ?30 mm to +15 mm at 25° C. and 60% RH.Type: GrantFiled: May 20, 2005Date of Patent: July 31, 2012Assignee: FUJIFILM CorporationInventors: Eiichiro Aminaka, Hiroyuki Kawanishi
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Patent number: 8174648Abstract: Disclosed is a cellulose acylate film comprising a cellulose acylate satisfying relations of 2.0?A+B?2.45, (II): and 0.8?A?1.4, and (III): 0.6?B?1.65 where “A” represents a degree of acetyl substitution of hydroxy in a glucose unit of cellulose acylate; and “B” represents a degree of with C3 or longer acyl substitution of hydroxy in a glucose unit of cellulose acylate; and satisfying relations of 50 nm?Re(590)?70 nm, 100 nm?Rth(590)?120 nm, and (VI): 1.4?Rth(590)/Re(590)?2.6.Type: GrantFiled: July 26, 2010Date of Patent: May 8, 2012Assignee: FUJIFILM CorporationInventor: Eiichiro Aminaka
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Patent number: 8049850Abstract: A liquid crystal display device comprising a liquid crystal panel in which liquid crystals having negative dielectric anisotropy are interposed between upper substrate and lower substrate that have been vertically oriented on the surface, the orientation of the liquid crystals being almost vertical with no applied voltage, almost horizontal when a predetermined voltage is applied, and tilted when a smaller voltage than the predetermined voltage is applied; a first polarizer and a second polarizer disposed on both sides of the liquid crystal panel such that the absorption axes of the polarizers are perpendicular to each other; a first retardation film disposed between the liquid crystal panel and the first polarizer; and a second retardation film disposed between the liquid crystal panel and the second polarizer, wherein the polarizer comprises a polarizing film and a pair of protective films having the polarizing film in between, and wherein at least one of the protective films is a cellulose acylate film satType: GrantFiled: December 28, 2005Date of Patent: November 1, 2011Assignee: FUJIFILM CorporationInventors: Susumu Sugiyama, Eiichiro Aminaka, Hajime Nakayama, Yukito Saitoh
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Publication number: 20110181812Abstract: Disclosed is a cellulose acylate film comprising a cellulose acylate satisfying relations of 2.0?A+B?2.45, (II): and 0.8?A?1.4, and (III): 0.6?B?1.65 where “A” represents a degree of acetyl substitution of hydroxy in a glucose unit of cellulose acylate; and “B” represents a degree of with C3 or longer acyl substitution of hydroxy in a glucose unit of cellulose acylate; and satisfying relations of 50 nm?Re(590)?70 nm, 100 nm?Rth(590)?120 nm, and (VI): 1.4?Rth(590)/Re(590)?2.6.Type: ApplicationFiled: July 26, 2010Publication date: July 28, 2011Applicant: FUJIFILM CorporationInventor: Eiichiro AMINAKA
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Patent number: 7777845Abstract: A liquid crystal display is provided and includes: a liquid crystal cell; a pair of polarizing plates disposed in cross-Nicol arrangement and sandwiching the liquid crystal cell. One of the pair of the polarizing plates has a protective film A for polarizer, disposed on the liquid crystal cell side, and the other of the pair has a protective film B for polarizer, disposed on a liquid crystal cell side. ReA(?) and RthA(?) of the protective film A, RthB(?) of the protective film B and ?nd(?) of the liquid crystal cell satisfy expressions (I) and (II) at a wavelength of 400 nm to 700 nm: 0.74×(?nd(?)?RthB(?))?RthA(?)?0.97×(?nd(?)?RthB(?))??(I) 0.018×?2/(?nd(?)?RthB(?))+0.032×??ReA(?)?0.036×?2/(?nd(?)?RthB(?))+0.032×???(II).Type: GrantFiled: October 18, 2006Date of Patent: August 17, 2010Assignee: Fujifillm CorporationInventors: Eiichiro Aminaka, Yukito Saitoh
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Patent number: 7573544Abstract: A polarizing plate comprises a light-scattering polarizing element and a light-absorbing polarizing element. The elements are so arranged that the polarizing transmission axis of the light-scattering polarizing element is essentially parallel to the polarizing transmission axis of the light-absorbing polarizing element. The light-scattering polarizing element has a polarizing layer comprising an optically isotropic continuous phase and an optically anisotropic discontinuous phase.Type: GrantFiled: April 10, 2006Date of Patent: August 11, 2009Assignee: Fujifilm CorporationInventors: Yoji Ito, Eiichiro Aminaka, Ichiro Amimori
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Publication number: 20090122243Abstract: A liquid crystal display device comprising a liquid crystal panel in which liquid crystals having negative dielectric anisotropy are interposed between upper substrate and lower substrate that have been vertically oriented on the surface, the orientation of the liquid crystals being almost vertical with no applied voltage, almost horizontal when a predetermined voltage is applied, and tilted when a smaller voltage than the predetermined voltage is applied; a first polarizer and a second polarizer disposed on both sides of the liquid crystal panel such that the absorption axes of the polarizers are perpendicular to each other; a first retardation film disposed between the liquid crystal panel and the first polarizer; and a second retardation film disposed between the liquid crystal panel and the second polarizer, wherein the polarizer comprises a polarizing film and a pair of protective films having the polarizing film in between, and wherein at least one of the protective films is a cellulose acylate film satType: ApplicationFiled: December 28, 2005Publication date: May 14, 2009Applicant: FUJIFILM CorporationInventors: Susumu Sugiyama, Eiichiro Aminaka, Hajime Nakayama, Yukito Saitoh
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Publication number: 20090122235Abstract: A liquid crystal display is provided and includes: a liquid crystal cell; a pair of polarizing plates disposed in cross-Nicol arrangement and sandwiching the liquid crystal cell. One of the pair of the polarizing plates has a protective film A for polarizer, disposed on the liquid crystal cell side, and the other of the pair has a protective film B for polarizer, disposed on a liquid crystal cell side. ReA(?) and RthA(?) of the protective film A, RthB(?) of the protective film B and ?nd(?) of the liquid crystal cell satisfy expressions (I) and (II) at a wavelength of 400 nm to 700 nm: 0.74×(?nd(?)?RthB(?))?RthA(?)?0.97×(?nd(?)?RthB(?))??(I) 0.018×?2/(?nd(?)?RthB(?))+0.032×??ReA(?)?0.036×?2/(?nd(?)?RthB(?))+0.Type: ApplicationFiled: October 18, 2006Publication date: May 14, 2009Applicant: FUJIFILM CorporationInventors: Eiichiro Aminaka, Yukito Saitoh
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Publication number: 20090103015Abstract: A polarizing plate comprising at least one protective film; and a polarizing film, wherein the protective film disposed on a liquid crystal cell side has Re(?) and Rth(?) satisfying the conditions of 45 nm?Re(590)?65 nm and 150 nm?Rth(590)?240 nm, and the polarizing plate gives, when disposed in an orthogonal position, a hue a* and a hue b* of the polarizing plate disposed in an orthogonal position satisfying the formulae ?1.0?a*?2.0 and ?1.0?b*?2.0 (wherein Re(?) represents a retardation value in plane at a wavelength of ?nm (unit: nm), and Rth(?) represents a retardation value along a thickness of the film (unit: nm)).Type: ApplicationFiled: September 26, 2006Publication date: April 23, 2009Applicant: FIJIFILM CorporationInventor: Eiichiro Aminaka
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Publication number: 20090086126Abstract: A polarizing plate comprising: a first protective film; a polarizer; and a second protective film, in this order, wherein at least one of the first protective film and the second protective film has an adhesive layer, and wherein the at least one of the first protective film and the second protective film has a modulus of elasticity E satisfying numerical formula (1), and the adhesive layer undergoes creep deformation of less than 70 ?m when a piece of which having a size of 10 mm in width and 10 mm in length is stuck on an alkali-free glass plate and a load of 200 g is applied thereto in an atmosphere of 50° C. for 1 hour: numerical formula (1): 500 MPa?E?3000 MPa.Type: ApplicationFiled: September 5, 2006Publication date: April 2, 2009Applicant: FUJIFILM CorporationInventors: Ikuko Ohgaru, Eiichiro Aminaka
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Publication number: 20090066887Abstract: A polymer film satisfying the following formulae (1) to (3): 20 nm?Rth(548)<100 nm??(1) 1.0<Rth(446)/Rth(548)<4.0??(2) 0.5<Rth(628)/Rth(548)<1.0??(3) wherein Rth(?) represents the value of Rth that is measured at a wavelength of ? nm.Type: ApplicationFiled: March 29, 2007Publication date: March 12, 2009Applicant: FUJIFILM CorporationInventors: Nobutaka Fukagawa, Eiichiro Aminaka, Hajime Nakayama, Hirofumi Toyama
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Publication number: 20090033833Abstract: A polarizing plate comprising a protective film provided on the both sides of a polarizer, wherein the polarizing plate has an adhesive layer provided on at least one side thereof, which adhesive layer comprising a (meth)acrylic copolymer composition composed of (A) a specific (meth)acrylic copolymer reactive with the following polyfunctional compound (B) and (B) a polyfunctional compound and having a specific gel fraction.Type: ApplicationFiled: November 30, 2005Publication date: February 5, 2009Applicant: FUJIFILM CORPORATIONInventor: Eiichiro Aminaka
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Publication number: 20070195226Abstract: To provide a polarizing plate which is adjusted in curling so as to cause no defectives during sticking to a liquid crystal cell while maintaining a high optical compensation capacity and a liquid crystal display comprising the polarizing plate excellent in viewing angle properties, a polarizing plate is provided and has a polarizing film and a protective film, which curls in an amount of from ?30 mm to +15 mm at 25° C. and 60% RH.Type: ApplicationFiled: May 20, 2005Publication date: August 23, 2007Applicant: FUJIFILM CorporationInventors: Eiichiro Aminaka, Hiroyuki Kawanishi
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Publication number: 20070132139Abstract: A process for preparation of an optically anisotropic cellulose ester film which comprises steps of: stretching a cellulose ester film comprising a cellulose ester of a lower fatty acid; and keeping the film at a temperature of 90 to 150° C. for 5 seconds to 3 minutes to prepare the optically anisotropic cellulose ester film.Type: ApplicationFiled: December 28, 2006Publication date: June 14, 2007Inventors: Eiichiro Aminaka, Kiyokazu Hashimoto
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Publication number: 20060268200Abstract: A polarizing plate is provided and includes: a polarizer; two protective films, the polarizer being between the two protective films; and an adhesive layer on at least one of the two protective films. At least one of the two protective films has an elastic modulus E satisfying formula (1): 5,700 MPa?E?10,000 MPa , and the adhesive layer undergoes creep deformation of less than 70 ?m when a piece of the adhesive layer having a size of 10 mm in width and 10 mm in length is stuck on an alkali-free glass plate and a load of 200 g is applied to the adhesive layer in an atmosphere of 50° C. for 1 hour.Type: ApplicationFiled: May 26, 2006Publication date: November 30, 2006Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Ikuko Ohgaru, Eiichiro Aminaka
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Patent number: 7118786Abstract: An optical compensatory sheet comprises a transparent support and an optically anisotropic layer. The optically anisotropic layer is formed from liquid crystal molecules. Three principal refractive indices of the optically anisotropic layer are different from each other.Type: GrantFiled: December 30, 2003Date of Patent: October 10, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Eiichiro Aminaka, Hideyuki Nishikawa, Ken Kawata