Patents by Inventor Yusuke FURUKI
Yusuke FURUKI 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: 20240118474Abstract: A phase difference film includes a small change in tint when the film is applied to a display device as a circularly polarizing plate in combination with a polarizer display device being observed from an oblique direction at all azimuthal angles. The film includes optically anisotropic layers X, Y, and Z in this order, in which layer X is an A-plate, and layers Y and Z are formed by fixing a first and second liquid crystal compound, respectively, twist-aligned along a helical axis extending in a thickness direction, one of the first and second liquid crystal compounds are rod-like liquid crystal compounds, the other first and the second liquid crystal compounds are disk-like liquid crystal compounds, and an in-plane slow axis of layer X is parallel to an in-plane slow axis on a surface of layer Y on layer X side.Type: ApplicationFiled: November 16, 2023Publication date: April 11, 2024Applicant: FUJIFILM CorporationInventors: Yuta TAKAHASHI, Yusuke FURUKI, Hiroki KUWAHARA
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Patent number: 11550088Abstract: Provided are a phase difference film that has a small change in tint in a case where the phase difference film is combined with a polarizer and then applied as a circularly polarizing plate to a display device, and the display device is observed from an oblique direction at all azimuthal angles; as well as a circularly polarizing plate and a display device. The phase difference film includes a first optically anisotropic layer, a second optically anisotropic layer, a third optically anisotropic layer, and a fourth optically anisotropic layer in this order, in which the first optically anisotropic layer is a C-plate, the second optically anisotropic layer is an A-plate, the third optically anisotropic layer is a layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, and the first, second, third, and fourth optically anisotropic layers have a predetermined configuration.Type: GrantFiled: May 25, 2022Date of Patent: January 10, 2023Assignee: FUJIFILM CorporationInventors: Yuta Takahashi, Yusuke Furuki, Toshihiro Konishi, Hiroki Kuwahara
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Publication number: 20220397712Abstract: Provided are a phase difference film that has a small change in tint in a case where the phase difference film is combined with a polarizer and then applied as a circularly polarizing plate to a display device, and the display device is observed from an oblique direction at all azimuthal angles; as well as a circularly polarizing plate and a display device. The phase difference film includes a first optically anisotropic layer, a second optically anisotropic layer, a third optically anisotropic layer, and a fourth optically anisotropic layer in this order, in which the first optically anisotropic layer is a C-plate, the second optically anisotropic layer is an A-plate, the third optically anisotropic layer is a layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, and the first, second third, and fourth optically anisotropic layers have a predetermined configuration.Type: ApplicationFiled: May 25, 2022Publication date: December 15, 2022Applicant: FUJIFILM CorporationInventors: Yuta TAKAHASHI, Yusuke FURUKI, Toshihiro KONISHI, Hiroki KUWAHARA
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Patent number: 10571613Abstract: The present invention provides a circularly polarizing plate capable of reducing the amount of change in tint and a difference in reflectivity while achieving thinning of a display device and a display device having the same. The circularly polarizing plate of the present invention includes a polarizer, a transparent support, an optically anisotropic layer including a liquid crystal compound in this order, in which the optically anisotropic layer satisfies Expression (1) and the transparent support has a thickness of 50 ?m or less and satisfied Expression (2), 100?Re(550)?180 nm . . . (1) and 1.00?R?1.20 . . . (2), in Expression (1), Re(550) represents an in-plane retardation of the optically anisotropic layer at a wavelength of 550 nm and in Expression (2), R represents a ratio between a maximum value and a minimum value of modulus of elasticity of the transparent support.Type: GrantFiled: September 13, 2017Date of Patent: February 25, 2020Assignee: FUJIFILM CorporationInventors: Yusuke Furuki, Masakane Muto
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Patent number: 10132974Abstract: The present invention provides a circularly polarizing plate that improves the visibility of black color in an oblique direction when being applied to a display device and having a small thickness, the display device including a circularly polarizing plate. The circularly polarizing plate is a circularly polarizing plate including, in this order, a polarizer, a ?/2 plate, and a ?/4 plate, in which the ?/2 plate is a laminate of a first A-plate and a first C-plate, the ?/4 plate is a laminate of a second A-plate and a second C-plate, one of the first C-plate and the second C-plate is a cellulose acylate film having a predetermined Rth, and the other of the first C-plate and the second C-plate is an optically anisotropic layer including a liquid crystal compound having a predetermined Rth or a cellulose acylate film having a predetermined Rth.Type: GrantFiled: March 22, 2017Date of Patent: November 20, 2018Assignee: FUJIFILM CorporationInventors: Yusuke Furuki, Naoyoshi Yamada, Masakane Muto
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Publication number: 20180003875Abstract: The present invention provides a circularly polarizing plate capable of reducing the amount of change in tint and a difference in reflectivity while achieving thinning of a display device and a display device having the same. The circularly polarizing plate of the present invention includes a polarizer, a transparent support, an optically anisotropic layer including a liquid crystal compound in this order, in which the optically anisotropic layer satisfies Expression (1) and the transparent support has a thickness of 50 ?m or less and satisfied Expression (2), 100?Re(550)?180 nm . . . (1) and 1.00?R?1.20 . . . (2), in Expression (1), Re(550) represents an in-plane retardation of the optically anisotropic layer at a wavelength of 550 nm and in Expression (2), R represents a ratio between a maximum value and a minimum value of modulus of elasticity of the transparent support.Type: ApplicationFiled: September 13, 2017Publication date: January 4, 2018Applicant: FUJIFILM CorporationInventors: Yusuke FURUKI, Masakane MUTO
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Publication number: 20170192145Abstract: The present invention provides a circularly polarizing plate that improves the visibility of black color in an oblique direction when being applied to a display device and having a small thickness, the display device including a circularly polarizing plate. The circularly polarizing plate is a circularly polarizing plate including, in this order, a polarizer, a ?/2 plate, and a ?/4 plate, in which the ?/2 plate is a laminate of a first A-plate and a first C-plate, the ?/4 plate is a laminate of a second A-plate and a second C-plate, one of the first C-plate and the second C-plate is a cellulose acylate film having a predetermined Rth, and the other of the first C-plate and the second C-plate is an optically anisotropic layer including a liquid crystal compound having a predetermined Rth or a cellulose acylate film having a predetermined Rth.Type: ApplicationFiled: March 22, 2017Publication date: July 6, 2017Applicant: FUJIFILM CorporationInventors: Yusuke FURUKI, Naoyoshi YAMADA, Masakane MUTO
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Publication number: 20150212246Abstract: There are provided a circularly polarizing plate which includes an optically anisotropic layer formed by using a discotic liquid crystal compound and an optically anisotropic layer formed by using a rod-like liquid crystal compound, inhibits an alignment defect of the rod-like liquid crystal compound, and has excellent visibility. The circularly polarizing plate has an optical laminate and a polarizing film.Type: ApplicationFiled: April 2, 2015Publication date: July 30, 2015Applicant: FUJIFILM CORPORATIONInventors: Shinpei YOSHIDA, Naoyoshi YAMADA, Hiroyuki KAIHOKO, Yusuke FURUKI