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    Method for producing optical member and optical member
    1.
    发明授权
    Method for producing optical member and optical member 有权

    公开(公告)号：US10996377B2

    公开(公告)日：2021-05-04

    申请号：US16078210

    申请日：2017-02-15

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Hidekazu Hayashi

    IPC: B32B27/30 ,  G02B1/118 ,  B32B3/30 ,  B32B27/00 ,  B32B23/08 ,  B32B27/16 ,  B32B27/22

    Abstract: The method for producing an optical member of the present invention includes: a step (1) of applying a lower layer resin and an upper layer resin; a step (2) of pressing a die against the lower layer resin and the upper layer resin from the upper layer resin side, so as to form a resin layer including an uneven structure on a surface thereof; and a step (3) of curing the resin layer to form the polymer layer, wherein the lower layer resin contains an amide group, the lower layer resin has an amide group concentration of 1.5 mmol/g or more and less than 5 mmol/g, and the polymer layer has a minimum storage modulus E′ of 1×108 Pa or higher and 1×109 Pa or lower at a bottom temperature of 110° C. or higher and 210° C. or lower.

    Optical member and polymer layer
    4.
    发明授权
    Optical member and polymer layer 有权

    公开(公告)号：US10947411B2

    公开(公告)日：2021-03-16

    申请号：US16061474

    申请日：2016-12-08

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Hidekazu Hayashi ,  Nobuaki Yamada

    IPC: C09D177/06 ,  C08J5/18 ,  C09D133/08 ,  G02B1/04 ,  G02B1/118 ,  C09D133/26 ,  C08F220/00 ,  C09D133/14 ,  B32B3/30 ,  C08F20/56

    Abstract: The optical member of the present invention includes a substrate and a polymer layer that is in direct contact with the substrate and includes on a surface thereof an uneven structure provided with multiple projections at a pitch not longer than a wavelength of visible light, the polymer layer containing an amide group, the polymer layer having an amide group concentration of 2 mmol/g or higher and lower than 5 mmol/g, the polymer layer having a minimum storage modulus E′ of 1×108 Pa or higher and 1×109 Pa or lower at a bottom temperature of 110° C. or higher and 210° C. or lower in a dynamic viscoelasticity measurement with a measurement temperature range of −50° C. to 250° C., a temperature rise rate of 5° C./min, and a frequency of 10 Hz.

    Antifouling film
    5.
    发明授权
    Antifouling film 有权

    公开(公告)号：US10913862B2

    公开(公告)日：2021-02-09

    申请号：US16479954

    申请日：2018-01-23

    Applicant: Sharp Kabushiki Kaisha

    Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Kenichiro Nakamatsu

    IPC: C09D5/16 ,  C08F232/06 ,  B32B3/30 ,  B32B27/30 ,  C08F16/04 ,  C08F220/56 ,  C08F290/00 ,  C09D5/18 ,  G02B1/18

    Abstract: The present invention provides an antifouling film that is excellent in antifouling properties, rubbing resistance, and adhesion. The antifouling film includes: a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light, the polymer layer being a cured product of a polymerizable composition, the polymerizable composition containing, in terms of active components, 30 to 80 wt % of a polyfunctional acrylate, 10 to 30 wt % of a monofunctional amide monomer, 0.5 to 10 wt % of a fluorine-based release agent, and 5 to 30 wt % of a vinyl-based polymer containing a repeat unit represented by a predetermined formula.

    Antifouling film
    8.
    发明授权
    Antifouling film 有权

    公开(公告)号：US10926510B2

    公开(公告)日：2021-02-23

    申请号：US16475420

    申请日：2018-01-11

    Applicant: Sharp Kabushiki Kaisha

    Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Kenichiro Nakamatsu

    IPC: B32B3/30 ,  B32B27/30 ,  G02B1/118 ,  G02B1/18

    Abstract: The present invention provides an antifouling film that is excellent in antifouling properties, adhesion, rubbing resistance, and reliability, and reduces fingerprint emergence at high humidity. The antifouling film includes a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light, the polymer layer being a cured product of a polymerizable composition, the polymerizable composition containing, in terms of active components, 20 to 90 wt % of a polyfunctional acrylate containing an ethylene oxide group, 5 to 25 wt % of a monofunctional amide monomer, and 0.5 to 10 wt % of a fluorine-based release agent, the polymerizable composition containing, in terms of active components, a total of 40 to 65 wt % of the ethylene oxide group in the polyfunctional acrylate and the monofunctional amide monomer.

    Optical member and polymerizable composition for nanoimprinting
    9.
    发明授权
    Optical member and polymerizable composition for nanoimprinting 有权

    公开(公告)号：US10471692B2

    公开(公告)日：2019-11-12

    申请号：US15743373

    申请日：2016-08-01

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Hidekazu Hayashi ,  Nobuaki Yamada

    IPC: B32B3/30 ,  B32B27/30 ,  B32B23/08 ,  G02B1/118 ,  G02B1/111

    Abstract: The present invention provides an optical member with which degradation of adhesion between a substrate containing triacetylcellulose and a polymer layer caused by moisture absorption is suppressed. An optical member according to the present invention includes a substrate and a polymer layer in direct contact with the substrate and having an indented structure on a surface thereof, the indented structure including multiple protrusions formed at a pitch not greater than a wavelength of visible light. Triacetylcellulose is present in at least a surface of the substrate on the polymer layer side, the polymer layer is formed from a polymerizable composition polymerizable by active energy ray irradiation, and the polymerizable composition contains 30 parts by weight or more and 75 parts by weight or less of a polyfunctional acrylate, 25 parts by weight or more and 60 parts by weight or less of a monofunctional monomer having a tertiary amide group, and 0.1 parts by weight or more and 10 parts by weight or less of a fluorine-containing compound having a reactive group.

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