Patents by Inventor Hiromichi Furukawa
Hiromichi Furukawa 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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Patent number: 9946110Abstract: There is provided a liquid crystal display including: a liquid crystal cell in which a liquid crystal layer is installed between two glass substrates; polarizing plates on both surfaces of the liquid crystal cell; and a backlight at a rear side of the liquid crystal cell, which is a non-visual side, wherein in a polarizing plate at a front side of the liquid crystal cell, which is a visual side, a difference in a moisture content of the polarizing plate at the front side under a specific condition in elapse of time is 0.01% or more and 3.0% or less.Type: GrantFiled: April 10, 2015Date of Patent: April 17, 2018Assignee: FUJIFILM CorporationInventors: Takashi Yonemoto, Hiromichi Furukawa, Takahiro Ohno, Megumi Sekiguchi, Mitsuo Osato, Kenichi Fukuda, Daiki Wakizaka
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Publication number: 20180074370Abstract: An optical film including an acrylic resin having a lactone ring structure in a main chain thereof and an acrylonitrile-styrene resin, wherein a tensile elastic modulus in a machine direction, which are abbreviated as EMD, and a tensile elastic modulus in a direction perpendicular to the machine direction, which is abbreviated as ETD, satisfy the relationship of Equation (1): Equation (1) EMD/ETD<0.8.Type: ApplicationFiled: November 7, 2017Publication date: March 15, 2018Applicant: FUJIFILM CorporationInventors: Ryuji SANETO, Shusuke ARITA, Hiromichi FURUKAWA
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Patent number: 9645438Abstract: Provided is a liquid crystal display device including a liquid crystal cell having a liquid crystal layer between two glass substrates, a front-side polarizing plate provided on a front side of the liquid crystal cell, a rear polarizer provided on a rear side of the liquid crystal cell, and a backlight provided on a rear side of the rear polarizer, in which the front-side polarizing plate has a first protective film, a polarizer, and a second protective film in this order from a surface side opposite to the liquid crystal cell, the first protective film in the front-side polarizing plate is a film including a polyester resin or a polycarbonate resin as a main component, an Re of the first protective film is 3000 nm or higher, an equilibrium moisture content of the second protective film at 25° C. and a relative humidity of 60% is in a range of 1% to 3%, and in the second protective film, a contractile force in a direction orthogonal to an absorption axis of the polarizer is 1.Type: GrantFiled: October 28, 2015Date of Patent: May 9, 2017Assignee: FUJIFILM CorporationInventors: Megumi Sekiguchi, Hiromichi Furukawa, Naoyoshi Yamada
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Publication number: 20160048057Abstract: Provided is a liquid crystal display device including a liquid crystal cell having a liquid crystal layer between two glass substrates, a front-side polarizing plate provided on a front side of the liquid crystal cell, a rear polarizer provided on a rear side of the liquid crystal cell, and a backlight provided on a rear side of the rear polarizer, in which the front-side polarizing plate has a first protective film, a polarizer, and a second protective film in this order from a surface side opposite to the liquid crystal cell, the first protective film in the front-side polarizing plate is a film including a polyester resin or a polycarbonate resin as a main component, an Re of the first protective film is 3000 nm or higher, an equilibrium moisture content of the second protective film at 25° C. and a relative humidity of 60% is in a range of 1% to 3%, and in the second protective film, a contractile force in a direction orthogonal to an absorption axis of the polarizer is 1.Type: ApplicationFiled: October 28, 2015Publication date: February 18, 2016Applicant: FUJIFILM CORPORATIONInventors: Megumi SEKIGUCHI, Hiromichi FURUKAWA, Naoyoshi YAMADA
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Publication number: 20160018578Abstract: A polarization plate includes a polarizer having polarization performance; a first protective film bonded to one surface of the polarizer through an adhesive layer 1; and a second protective film bonded to the other surface of the polarizer through an adhesive layer 2, in which a modulus of elasticity of the first protective film at 25° C. and relative humidity of 60% in an absorption axis direction of the polarizer is greater than or equal to 1.0 GPa and less than 4.0 GPa, a ratio of the modulus of elasticity of the first protective film at 25° C. and relative humidity of 60% in the absorption axis direction of the polarizer to a modulus of elasticity of the first protective film at 25° C. and relative humidity of 60% in a direction orthogonal to the absorption axis of the polarizer is less than or equal to 0.8, a modulus of elasticity of the second protective film at 25° C. and relative humidity of 60% in the absorption axis direction of the polarizer is greater than or equal to 2.0 GPa and less than 5.Type: ApplicationFiled: September 28, 2015Publication date: January 21, 2016Applicant: FUJIFILM CORPORATIONInventors: Takashi YONEMOTO, Naoyoshi YAMADA, Hiromichi FURUKAWA, Ryuji SANETO, Kazuya HISANAGA
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Publication number: 20150378211Abstract: A VA mode liquid crystal display device including a backlight; a first polarizing plate; a VA mode liquid crystal cell; and a second polarizing plate, in this order, wherein the first polarizing plate includes a first polarizer and a first optical film, and the second polarizing plate includes a second polarizer and a second optical film, the optical film contains an acrylic resin, and a tensile elastic modulus of the optical film in a machine direction, which are abbreviated as EMD, and a tensile elastic modulus in a direction perpendicular to the machine direction, which is abbreviated as ETD, satisfy the relationship of Equation (1): EMD/ETD<0.8.Type: ApplicationFiled: September 8, 2015Publication date: December 31, 2015Applicant: FUJIFILM CORPORATIONInventors: Ryuji SANETO, Shusuke ARITA, Hiromichi FURUKAWA
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Publication number: 20150212368Abstract: There is provided a liquid crystal display including: a liquid crystal cell in which a liquid crystal layer is installed between two glass substrates; polarizing plates on both surfaces of the liquid crystal cell; and a backlight at a rear side of the liquid crystal cell, which is a non-visual side, wherein in a polarizing plate at a front side of the liquid crystal cell, which is a visual side, a difference in a moisture content of the polarizing plate at the front side under a specific condition in elapse of time is 0.01% or more and 3.0% or less.Type: ApplicationFiled: April 10, 2015Publication date: July 30, 2015Applicant: FUJIFILM CorporationInventors: Takashi YONEMOTO, Hiromichi FURUKAWA, Takahiro OHNO, Megumi SEKIGUCHI, Mitsuo OSATO, Kenichi FUKUDA, Daiki WAKIZAKA
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Publication number: 20150055062Abstract: An optical film, has a film thickness of 15 ?m to 45 ?m, Rth (440 W, 30% RH) and “Rth (440 W, 30% RH)?Rth (440 W, 80% RH)” of the optical film satisfy Expression (1) ?20 nm?Rth (440 W, 30% RH)?5 nm and Expression (2) 0 nm?Rth (440 W, 30% RH)?RH (440 W, 80% RH)?18 nm, here, in Expressions (1) and (2), Rth (440 W, 30% RH) represents a retardation value in a film thickness direction at a wavelength of 440 nm measured at 25° C. and at a relative humidity of 30% and Rth (440 W, 80% RH) represents a retardation value in the film thickness direction at a wavelength of 440 nm measured at 25° C. and at a relative humidity of 80%; a polarizer and liquid crystal display device.Type: ApplicationFiled: November 10, 2014Publication date: February 26, 2015Applicant: FUJIFILM CorporationInventors: Yoshiaki HISAKADO, Masato NAGURA, Jun NOGUCHI, Kazuya HISANAGA, Nobutaka FUKAGAWA, Yu NAITO, Hiromichi FURUKAWA
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Publication number: 20140322554Abstract: An optical film contains an acrylic resin, in which at least one of a modulus of elongation on a machine direction and a modulus of elongation on a direction vertical to the machine direction is less than 2.3×109 N/m2 and an in-plane retardation value Re (nm) of the optical film represented by the following formula (i) satisfies the following formula (ia): Re=(nx?ny)×d??Formula (i) ?Re=Re(10)?Re(0)?10??Formula (ia) wherein, in the formulae, nx represents a refractive index in an in-plane slow axis direction of the optical film, ny represents a refractive index in an in-plane fast axis direction of the optical film, d represents a thickness (nm) of the optical film, Re(10) represents a retardation value when the optical film is stretched 10%, and Re(0) represents a retardation value in an unstretched state of the optical film.Type: ApplicationFiled: April 24, 2014Publication date: October 30, 2014Applicant: FUJIFILM CORPORATIONInventors: Shusuke ARITA, Hiromichi FURUKAWA
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Publication number: 20140253847Abstract: There is provided an optical film including an acrylic resin, wherein a tensile elastic modulus in a machine direction, which are abbreviated as EMD, and a tensile elastic modulus in a direction perpendicular to the machine direction, which is abbreviated as ETD, satisfy the relationship of Equation (1): EMD/ETD<0.8??Equation (1).Type: ApplicationFiled: March 7, 2014Publication date: September 11, 2014Applicant: FUJIFILM CORPORATIONInventors: Ryuji SANETO, Shusuke ARITA, Hiromichi FURUKAWA
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Patent number: 8373826Abstract: An optical film is provided and includes a cellulose ester and an acrylic resin. The mass ratio of the cellulose ester to the acrylic resin is 70/30 to 5/95, the total haze value of the optical film is 0.80 or less, the internal haze value of the optical film is 0.01 to 0.28, and the modulus of elasticity in the transverse direction of the optical film is 2,700 to 7,000 MPa.Type: GrantFiled: December 27, 2010Date of Patent: February 12, 2013Assignee: FUJIFILM CorporationInventors: Hiroyuki Kawanishi, Hiromichi Furukawa
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Patent number: 8263195Abstract: A cellulose ester film is provided and includes a polycondensate obtained from a diol and a dicarboxylic acid, and the polycondensate contains the following (1) and (2). (1) A dicarboxylic acid residue containing an aromatic dicarboxylic acid residue and an aliphatic dicarboxylic acid residue having an average carbon number of 4.0 to 5.0, in which a ratio of the aromatic dicarboxylic acid residue represented by the following equation is from 40% by mole to 95% by mole: The ratio of the aromatic dicarboxylic acid residue=[(the number of moles of the aromatic dicarboxylic acid residue)/((the number of moles of the aromatic dicarboxylic acid residue)+(the number of moles of the aliphatic dicarboxylic acid residues))]×100. (2) An aliphatic diol residue having an average carbon number of 2.0 to 3.0.Type: GrantFiled: June 4, 2010Date of Patent: September 11, 2012Assignee: FUJIFILM CorporationInventors: Hiromichi Furukawa, Mamoru Sakurazawa
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Publication number: 20110157524Abstract: An optical film is provided and includes a cellulose ester and an acrylic resin. The mass ratio of the cellulose ester to the acrylic resin is 70/30 to 5/95, the total haze value of the optical film is 0.80 or less, the internal haze value of the optical film is 0.01 to 0.28, and the modulus of elasticity in the transverse direction of the optical film is 2,700 to 7,000 MPa.Type: ApplicationFiled: December 27, 2010Publication date: June 30, 2011Applicant: FUJIFILM CORPORATIONInventors: Hiroyuki KAWANISHI, Hiromichi FURUKAWA
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Publication number: 20100308264Abstract: A cellulose ester film is provided and includes a polycondensate obtained from a diol and a dicarboxylic acid, and the polycondensate contains the following (1) and (2). (1) A dicarboxylic acid residue containing an aromatic dicarboxylic acid residue and an aliphatic dicarboxylic acid residue having an average carbon number of 4.0 to 5.0, in which a ratio of the aromatic dicarboxylic acid residue represented by the following equation is from 40% by mole to 95% by mole: The ratio of the aromatic dicarboxylic acid residue=[(the number of moles of the aromatic dicarboxylic acid residue)/((the number of moles of the aromatic dicarboxylic acid residue)+(the number of moles of the aliphatic dicarboxylic acid residues))]×100. (2) An aliphatic diol residue having an average carbon number of 2.0 to 3.0.Type: ApplicationFiled: June 4, 2010Publication date: December 9, 2010Applicant: FUJIFILM CORPORATIONInventors: Hiromichi FURUKAWA, Mamoru Sakurazawa
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Publication number: 20090213311Abstract: A liquid crystal display device includes: a liquid crystal cell; and a pair of polarizing plates sandwiching the liquid crystal cell and each including a polarizer and a protective film provided on a side of the liquid crystal cell, in which transmission axes of the pair of polarizing plates are orthogonally arranged, wherein Rth(?) of at least one of the protective films provided on the liquid crystal cell side of the polarizing plates has negative characteristics for ambient temperature, in which Rth(?) represents a retardation in a thickness direction measured at a wavelength of ? nm.Type: ApplicationFiled: February 19, 2009Publication date: August 27, 2009Applicant: FUJIFILM CorporationInventors: Yoshiaki Hisakado, Hiromichi Furukawa
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Patent number: 6310852Abstract: An optical recording/reproducing apparatus comprises: a light receiving and emitting device that emits divergent optical beams and detects various signals on a disk; a collimator lens for converting the optical beams emitted from the device into parallel beams; an objective lens for converging the optical beams of the parallel beams onto the disk; and an objective-lens drive for driving the objective lens in a focusing direction perpendicular to a recording surface of the disk and in a radial direction parallel to the recording surface. The objective-lens drive is supported by suspensions attached at one end to a lens holder for holding the objective lens and to a fixing member at their other ends. The collimator lens is positioned between the objective lens and the fixing member.Type: GrantFiled: October 8, 1999Date of Patent: October 30, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hironori Tomita, Hideki Aikoh, Hideki Nakata, Hiromichi Furukawa