Patents by Inventor Tetsuya Uesaka
Tetsuya Uesaka 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: 20190224942Abstract: [Problem] Provided is a visibility improvement film for improving visibility of laser light beam irradiated on a display screen of an image display device. [Solving means] According to the present invention, there is provided a visibility improvement film for use for improving the visibility of laser light beam irradiated on a display screen of an image display device, wherein the visibility improvement film comprises a transparent light scattering layer comprising a binder, and at least either one of 0.0001 to 1.0% by mass of light reflective microparticles and light diffusive microparticles, based on the binder.Type: ApplicationFiled: July 7, 2017Publication date: July 25, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Akira MATSUO, Tetsuya UESAKA, Tatsuya KAWABATA
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Patent number: 8629226Abstract: A retardation film, formed by stretching a film having a norbornene-based ring-opening copolymer containing a structural unit (A) represented by the general formula (1) and a structural unit (B) represented by the general formula (2), wherein the content of structural unity (A) is not less than 5 mol % but not more than 95 mol % relative to the total amount of structural units (A) and (B).Type: GrantFiled: December 24, 2010Date of Patent: January 14, 2014Assignee: JX Nippon Oil & Energy CorporationInventors: Takeshi Koike, Shinichi Komatsu, Tetsuya Uesaka, Hisashi Sone, Yuji Takahashi
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Publication number: 20120302713Abstract: A retardation film, formed by stretching a film comprising a norbornene-based ring-opening copolymer containing a structural unit (A) represented by the following general formula (1): [in the formula (1), n represents an integer of any one of 0 and 1, R1 represents a hydrogen atom or the like, X1 represents a group represented by a formula: —CH?CH— or the like, a and b each independently represent an integer of 0 to 6, Ys each independently represent a methylene group or the like, and Zs each independently represent a methylene group or the like], and a structural unit (B) represented by the following general formula (2): [in the formula (2), m represents an integer of any one of 0 and 1, X2 represents a group represented by a formula: —CH?CH— or the like, and R2, R3, R4, and R5 each independently represent a hydrogen atom or the like], wherein a content of the structural unit (A) is not less than 5 mol % but not more than 95 mol % relative to a total amount of the structural units (AType: ApplicationFiled: December 24, 2010Publication date: November 29, 2012Applicant: JX NIPPON OIL & ENERGY CORPORATIONInventors: Takeshi Koike, Shinichi Komatsu, Tetsuya Uesaka, Hisashi Sone, Yuji Takahashi
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Patent number: 8203673Abstract: An elliptical polarizer with excellent viewing angle characteristics is provided which comprises at least a first polarizer, a first optical anisotropic layer, a second optical anisotropic layer, and a third optical anisotropic layer, laminated in this order, wherein the first optical anisotropic layer satisfies [1] 50?Re1?500, the second optical anisotropic layer satisfies [2] 0?Re2?20 and [3] ?500?Rth2??30, and the third optical anisotropic layer satisfies [4] 100?Re3?180 wherein Re and Rth indicate the retardation values in the plane and thickness direction, respectively, of each of the optical anisotropic layers.Type: GrantFiled: October 30, 2007Date of Patent: June 19, 2012Assignee: Nippon Oil CorporationInventors: Tetsuya Uesaka, Satoru Ikeda
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Patent number: 8179501Abstract: An elliptical polarizer is provided having excellent viewing angle improving effects. The elliptical polarizer includes a polarizer, a first optical anisotropic layer, and a second optical anisotropic layer, laminated in this order. The first optical anisotropic layer satisfies the requirements of 0.8?NZ1?1.6 and 120?Re1?250 and is disposed so that the slow axis thereof is orthogonal to the absorption axis of the polarizer. The second optical anisotropic layer is a liquid crystal film having a retardation value in the plane of 30 to 150 nm with respect to a 550 nm wavelength light and fixed in a nematic hybrid alignment wherein the average tilt angle of the liquid crystal molecules of a liquid crystalline polymer exhibiting a positive optical uniaxiality, and is disposed so that the aligned direction thereof is parallel to the absorption axis of the first polarizer.Type: GrantFiled: August 18, 2008Date of Patent: May 15, 2012Assignee: Nippon Oil CorporationInventors: Yuji Takahashi, Satoru Ikeda, Tetsuya Uesaka
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Patent number: 8137766Abstract: A homeotropic alignment liquid crystal film is provided with a liquid crystalline substance containing a side chain liquid crystalline compound having an oxetanyl group, as a constituent, aligned homeotropically on an alignment substrate while being in a liquid crystal state and fixed in the homeotropic alignment by allowing the oxetanyl group to react. Thus, the homeotropic alignment liquid crystal film can be stably produced without necessitating a complicated step such as light irradiation under an inert gas atmosphere and is excellent in alignment retainability after being fixed in the homeotropic alignment and in mechanical strength.Type: GrantFiled: March 18, 2010Date of Patent: March 20, 2012Assignee: Nippon Oil CorporationInventors: Hitoshi Mazaki, Tetsuya Uesaka, Takashi Seki, Takuya Matsumoto, Akio Mutou
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Patent number: 8134659Abstract: The present invention provides an elliptical polarizer with excellent viewing angle characteristics. The elliptical polarizer comprises at least a first polarizer, a first optically anisotropic layer, a second optically anisotropic layer, and a third optically anisotropic layer, laminated in this order, the first optically anisotropic layer satisfying [1] 50?Re1?500, [2] 30?Rth1?750, and [3] 0.6?Rth1/Re1?1.5, the second optically anisotropic layer satisfying [4] 0?Re2?20 and [5] ?500?Rth2??30, and the third optically anisotropic layer satisfying [6] 100?Re3?180, [7] 50?Rth3?600, and [8] 0.5?Rth3/Re3?3.5, wherein Re indicates the retardation value in the plane of each optically anisotropic layer and Rth indicates the retardation value in the thickness direction of each optically anisotropic layer.Type: GrantFiled: April 20, 2009Date of Patent: March 13, 2012Assignee: JX Nippon Oil & Energy CorporationInventors: Yuji Takahashi, Tetsuya Uesaka, Satoru Ikeda
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Patent number: 8045131Abstract: The present invention provides a transparent liquid crystal display device which is less in display characteristics and viewing angle dependency and can provide bright images and high contrasts. The transparent liquid crystal display device comprises at least: a backlight; a polarizer; a second optical anisotropic layer with a retardation of 50 to 180 nm at a wavelength of 550 nm; a first optical anisotropic layer with a retardation of 20 to 140 nm at a wavelength of 550 nm; a homogeneously aligned liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates; a third optical anisotropic layer with a retardation of 50 to 200 nm at a wavelength of 550 nm; and a polarizer, arranged in piles in this order from the backlight, wherein the first optical anisotropic layer comprising at least a liquid crystal film with a fixed nematic hybrid liquid crystal alignment structure.Type: GrantFiled: October 30, 2007Date of Patent: October 25, 2011Assignee: Nippon Oil CorporationInventors: Tetsuya Uesaka, Satoru Ikeda
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Patent number: 8018552Abstract: The present invention provides a transmissive liquid crystal display device which is less in display characteristics fluctuations, bright in display images, high in contrast and less in viewing angle dependency and comprises a backlight, a polarizer, a second optically anisotropic layer, a first optically anisotropic layer, a homogeneously aligned liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates, and a polarizer, arranged in piles in this order from the backlight, wherein a liquid crystal film forming the first optically anisotropic layer, a liquid crystal film forming the second optically anisotropic layer and the liquid crystal cell have a predetermined relationship in the wavelength dispersion of birefringence, the first optically anisotropic layer, the second optically anisotropic layer and the liquid crystal cell upon application of an electric voltage for black image display, have a predetermined relaType: GrantFiled: January 29, 2008Date of Patent: September 13, 2011Assignee: Nippon Oil CorporationInventors: Satoru Ikeda, Tetsuya Uesaka
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Publication number: 20110116004Abstract: An elliptical polarizer is provided having excellent viewing angle improving effects. The elliptical polarizer includes a polarizer, a first optical anisotropic layer, and a second optical anisotropic layer, laminated in this order. The first optical anisotropic layer satisfies the requirements of 0.8?NZ1?1.6 and 120?Re1?250 and is disposed so that the slow axis thereof is orthogonal to the absorption axis of the polarizer. The second optical anisotropic layer is a liquid crystal film having a retardation value in the plane of 30 to 150 nm with respect to a 550 nm wavelength light and fixed in a nematic hybrid alignment wherein the average tilt angle of the liquid crystal molecules of a liquid crystalline polymer exhibiting a positive optical uniaxiality, and is disposed so that the aligned direction thereof is parallel to the absorption axis of the first polarizer.Type: ApplicationFiled: August 18, 2008Publication date: May 19, 2011Applicant: NIPPON OIL CORPORATIONInventors: Yuji Takahashi, Satoru Ikeda, Tetsuya Uesaka
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Patent number: 7911570Abstract: The present invention provides a liquid crystal display device comprising at least: a backlight; a polarizer; a first optically anisotropic layer with a retardation of 210 to 300 nm at a wavelength of 550 nm; a second optically anisotropic layer with a retardation of 50 to 140 nm at a wavelength of 550 nm; a third optically anisotropic layer with negative optical anisotropy; a liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates; a fourth optically anisotropic layer with a retardation of 50 to 140 nm at a wavelength of 550 nm; a first optically anisotropic layer with a retardation of 210 to 300 nm at a wavelength of 550 nm; and a polarizer, arranged in piles in this order from the backlight, the second optically anisotropic layer comprising at least a liquid crystal film with a fixed nematic hybrid liquid crystal orientation structure.Type: GrantFiled: November 2, 2006Date of Patent: March 22, 2011Assignee: Nippon Oil CorporationInventors: Tetsuya Uesaka, Satoru Ikeda
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Publication number: 20110063547Abstract: The present invention provides an elliptical polarizer with excellent viewing angle characteristics. The elliptical polarizer comprises at least a first polarizer, a first optically anisotropic layer, a second optically anisotropic layer, and a third optically anisotropic layer, laminated in this order, the first optically anisotropic layer satisfying [1] 50?Re1?500, [2] 30?Rth1?750, and [3] 0.6?Rth1/Re1?1.5, the second optically anisotropic layer satisfying [4] 0?Re2?20 and [5] ?500?Rth2??30, and the third optically anisotropic layer satisfying [6] 100?Re3?180, [7] 50?Rth3?600, and [8] 0.5?Rth3/Re3?3.5, wherein Re indicates the retardation value in the plane of each optically anisotropic layer and Rth indicates the retardation value in the thickness direction of each optically anisotropic layer.Type: ApplicationFiled: April 20, 2009Publication date: March 17, 2011Applicant: JX NIPPON OIL & ENERGY CORPORATIONInventors: Yuji Takahashi, Tetsuya Uesaka, Satoru Ikeda
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Patent number: 7898620Abstract: The present invention provides a transmissive liquid crystal display device which is less in variation in displaying characteristics, bright in displaying image, high in contrast and less in viewing angle dependency. The liquid crystal display comprises at least a specific first optically anisotropic layer with a fixed nematic hybrid orientation structure and a specific second optically anisotropic layer.Type: GrantFiled: February 27, 2007Date of Patent: March 1, 2011Assignee: Nippon Oil CorporationInventors: Satoru Ikeda, Tetsuya Uesaka
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Patent number: 7826017Abstract: A transmissive liquid crystal display device comprises at least a backlight, a polarizer, a first optically anisotropic layer with a retardation of 50 to 140 nm at a wavelength of 550 nm, a second optically anisotropic layer with negative retardation, a homogeneously oriented liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates, a third optically anisotropic layer with a retardation of 130 to 210 nm at a wavelength of 550 nm; and a polarizer, arranged in piles in this order from the backlight, the first optically anisotropic layer comprising at least a liquid crystal film with a fixed nematic hybrid liquid crystal orientation structure, and is less in display characteristic variation, bright in display, high in contrast, and less in viewing angle dependence.Type: GrantFiled: November 2, 2006Date of Patent: November 2, 2010Assignee: Nippon Oil CorporationInventor: Tetsuya Uesaka
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Publication number: 20100182544Abstract: The present invention provides a transmissive liquid crystal display device which is less in display characteristics fluctuations, bright in display images, high in contrast and less in viewing angle dependency and comprises a backlight, a polarizer, a second optically anisotropic layer, a first optically anisotropic layer, a homogeneously aligned liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates, and a polarizer, arranged in piles in this order from the backlight, wherein a liquid crystal film forming the first optically anisotropic layer, a liquid crystal film forming the second optically anisotropic layer and the liquid crystal cell have a predetermined relationship in the wavelength dispersion of birefringence, the first optically anisotropic layer, the second optically anisotropic layer and the liquid crystal cell upon application of an electric voltage for black image display, have a predetermined relaType: ApplicationFiled: January 29, 2008Publication date: July 22, 2010Applicant: NIPPON OIL CORPORATIONInventors: Satoru Ikeda, Tetsuya Uesaka
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Publication number: 20100171916Abstract: A homeotropic alignment liquid crystal film is provided with a liquid crystalline substance containing a side chain liquid crystalline compound having an oxetanyl group, as a constituent, aligned homeotropically on an alignment substrate while being in a liquid crystal state and fixed in the homeotropic alignment by allowing the oxetanyl group to react. Thus, the homeotropic alignment liquid crystal film can be stably produced without necessitating a complicated step such as light irradiation under an inert gas atmosphere and is excellent in alignment retainability after being fixed in the homeotropic alignment and in mechanical strength.Type: ApplicationFiled: March 18, 2010Publication date: July 8, 2010Applicant: NIPPON OIL CORPORATIONInventors: Hitoshi MAZAKI, Takashi SEKI, Takuya MATSUMOTO, Tetsuya UESAKA, Akio MUTOU
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Patent number: 7732024Abstract: A homeotropic alignment liquid crystal film is provided with a liquid crystalline substance containing a side chain liquid crystalline compound having an oxetanyl group, as a constituent, aligned homeotropically on an alignment substrate while being in a liquid crystal state and fixed in the homeotropic alignment by allowing the oxetanyl group to react. Thus, the homeotropic alignment liquid crystal film can be stably produced without necessitating a complicated step such as light irradiation under an inert gas atmosphere and is excellent in alignment retainability after being fixed in the homeotropic alignment and in mechanical strength.Type: GrantFiled: July 23, 2007Date of Patent: June 8, 2010Assignee: Nippon Oil CorporationInventors: Hitoshi Mazaki, Takashi Seki, Takuya Matsumoto, Tetsuya Uesaka, Akio Mutou
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Publication number: 20100085522Abstract: The present invention provides a transparent liquid crystal display device which is less in display characteristics and viewing angle dependency and can provide bright images and high contrasts. The transparent liquid crystal display device comprises at least: a backlight; a polarizer; a second optical anisotropic layer with a retardation of 50 to 180 nm at a wavelength of 550 nm; a first optical anisotropic layer with a retardation of 20 to 140 nm at a wavelength of 550 nm; a homogeneously aligned liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates; a third optical anisotropic layer with a retardation of 50 to 200 nm at a wavelength of 550 nm; and a polarizer, arranged in piles in this order from the backlight, wherein the first optical anisotropic layer comprising at least a liquid crystal film with a fixed nematic hybrid liquid crystal alignment structure.Type: ApplicationFiled: October 30, 2007Publication date: April 8, 2010Applicant: NIPPON OIL CORPORATIONInventors: Tetsuya Uesaka, Satoru Ikeda
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Publication number: 20100026936Abstract: An elliptical polarizer with excellent viewing angle characteristics is provided which comprises at least a first polarizer, a first optical anisotropic layer, a second optical anisotropic layer, and a third optical anisotropic layer, laminated in this order, wherein the first optical anisotropic layer satisfies [1] 50?Re1?500, the second optical anisotropic layer satisfies [2] 0?Re2?20 and [3] ?500?Rth2??30, and the third optical anisotropic layer satisfies [4] 100?Re 3?180 wherein Re and Rth indicate the retardation values in the plane and thickness direction, respectively, of each of the optical anisotropic layers.Type: ApplicationFiled: October 30, 2007Publication date: February 4, 2010Applicant: NIPPON OIL CORPORATIONInventors: Tetsuya Uesaka, Satoru Ikeda
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Publication number: 20090284689Abstract: The present invention provides a transmissive liquid crystal display device which is less in variation in displaying characteristics, bright in displaying image, high in contrast and less in viewing angle dependency. The liquid crystal display comprises at least a specific first optically anisotropic layer with a fixed nematic hybrid orientation structure and a specific second optically anisotropic layer.Type: ApplicationFiled: February 27, 2007Publication date: November 19, 2009Applicant: NIPPON OIL CORPORATIONInventors: Satoru Ikeda, Tetsuya Uesaka