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    PLASTIC OPTICAL FIBER, OPTICAL CORD, AND ACTIVE OPTICAL CABLE
    12.
    发明公开
    PLASTIC OPTICAL FIBER, OPTICAL CORD, AND ACTIVE OPTICAL CABLE 审中-公开

    公开(公告)号：US20240329295A1

    公开(公告)日：2024-10-03

    申请号：US18616399

    申请日：2024-03-26

    Applicant: NITTO DENKO CORPORATION

    Inventor： Takashi Shimizu ,  Toru Moriya ,  Kazuya Takayama ,  Hiroshi Ohmura

    IPC: G02B6/028

    CPC classification number: G02B6/0281

    Abstract: A plastic optical fiber of the present disclosure includes: a core including a first region having a refractive index decreasing in a direction from a center of the core toward an outer edge of the core; and a trench disposed on an outer circumference of the core. When a refractive index difference between a refractive index n1 at the outer edge of the core and a refractive index n2 of the trench is defined as Δn and a thickness of the trench is defined as d (μm), a value of Δn×d is 0.010 or more and 0.06 or less.

    Polarizing plate with phase-difference layer and image display device
    13.
    发明授权
    Polarizing plate with phase-difference layer and image display device 有权

    公开(公告)号：US10156671B2

    公开(公告)日：2018-12-18

    申请号：US15551113

    申请日：2016-02-15

    Applicant: NITTO DENKO CORPORATION

    Inventor： Takeharu Kitagawa ,  Takashi Shimizu ,  Shusaku Goto

    IPC: G02B5/30 ,  G02B1/08 ,  G02B1/14

    Abstract: There is provided a polarizing plate with a retardation layer being extremely thin and having excellent durability. A polarizing plate with a retardation layer includes a polarizer; a protective layer bonded onto one side of the polarizer through intermediation of a first adhesive layer; and a retardation layer bonded onto another side of the polarizer through intermediation of a second adhesive layer. The polarizer has a thickness of from 2 μm to 12 μm, a boric acid content of 18 wt % or more, an iodine content of 2.1 wt % or more, a single layer transmittance of 44.2% or more, a polarization degree of 98% or more, and an orientation function of 0.35 or more. The retardation layer has a thickness of 50 μm or less and a birefringence Δnxy of 0.0025 or more. The first and second adhesive layer each has a thickness of 2 μm or less.

    METHOD OF PRODUCING RETARDATION FILM AND METHOD OF PRODUCING CIRCULARLY POLARIZING PLATE, AND FILM-STRETCHING APPARATUS
    15.
    发明申请
    METHOD OF PRODUCING RETARDATION FILM AND METHOD OF PRODUCING CIRCULARLY POLARIZING PLATE, AND FILM-STRETCHING APPARATUS 审中-公开
    制造延迟膜的方法和生产圆形极化板的方法和薄膜拉伸装置

    公开(公告)号：US20170066175A1

    公开(公告)日：2017-03-09

    申请号：US15120435

    申请日：2015-04-07

    Applicant: NITTO DENKO CORPORATION

    Inventor： Takashi Shimizu ,  Makoto Nakaichi ,  Ryuuichi Kira ,  Satoshi Hirata

    IPC: B29C55/04 ,  B29B13/02 ,  G02F1/1335 ,  G02B5/30 ,  G02F1/13363 ,  B29C55/20 ,  B29D11/00

    CPC classification number: B29C55/04 ,  B29B13/023 ,  B29C55/045 ,  B29C55/16 ,  B29C55/20 ,  B29D11/00644 ,  B29L2011/0066 ,  C08J5/18 ,  G02B5/305 ,  G02B5/3083 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2001/133541

    Abstract: Provided is a method capable of producing a retardation film having an elongated shape and having a slow axis in an oblique direction with high production efficiency while precisely controlling the direction of the slow axis and the variation of the direction. The method of producing a retardation film of the present invention includes: holding the left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; obliquely stretching the film; and releasing the clips holding the film. The oblique stretching includes making the change ratio of the clip pitch of the clips on one side in the traveling direction thereof and the change ratio of the clip pitch of the clips on the other side in the traveling direction thereof different from each other, and/or making the position at which the clip pitch of the clips on the one side in the traveling direction starts to change and the position at which the clip pitch of the clips on the other side in the traveling direction starts to change different from each other, while extending a distance between the left and right clips. In the present invention, the moving speeds of the clips are braked immediately before the holding step and/or during a time period from the holding step to the oblique stretching step.

    Abstract translation: 本发明提供一种在精确控制慢轴的方向和方向的变化的同时，能够以高生产率生产具有细长形状并具有倾斜方向的慢轴的延迟膜的方法。 本发明的延迟膜的制造方法，其特征在于，包括：左右可变节距夹具的左右端部分别被配置为具有纵向变化的夹紧间距; 预热胶片; 倾斜拉伸薄膜; 并释放夹持胶片的夹子。 倾斜拉伸包括使夹子在其行进方向上的一侧的夹子间距的变化率和其行进方向上另一侧的夹子的夹子间距的变化率彼此不同，和/ 或者使行进方向上的一侧的夹子的夹子间距开始变化的位置，并且在行进方向上的另一侧的夹子的夹子间距开始变化的位置彼此不同， 同时延伸左右夹子之间的距离。 在本发明中，在保持步骤之前和/或在从保持步骤到倾斜拉伸步骤的时间段期间，夹具的移动速度被制动。

    Circular polarizing plate and organic electroluminescence panel
    18.
    发明授权
    Circular polarizing plate and organic electroluminescence panel 有权
    圆偏振片和有机电致发光面板

    公开(公告)号：US09400345B2

    公开(公告)日：2016-07-26

    申请号：US14407247

    申请日：2013-06-24

    Applicant: NITTO DENKO CORPORATION

    Inventor： Toshiyuki Iida ,  Takashi Shimizu ,  Nao Murakami ,  Kazuki Uwada ,  Tadashi Kojima

    IPC: G02B5/30 ,  G02B1/08 ,  H01L51/52

    CPC classification number: G02B5/305 ,  G02B1/08 ,  G02B5/3025 ,  G02B5/3083 ,  H01L51/5281

    Abstract: There is provided a circularly polarizing plate that can prevent light leakage in an organic EL panel and can suppress the warping of the panel to reduce reflection unevenness in a panel surface. A circularly polarizing plate according to an embodiment of the present invention is used in an organic EL panel, and includes a polarizer and a retardation film directly bonded to the polarizer. In-plane retardations of the retardation film satisfy a relationship of Re(450)

    Abstract translation: 提供了可以防止有机EL面板中的光泄漏的圆偏振板，并且可以抑制面板的翘曲以减少面板表面中的反射不均匀性。 根据本发明实施例的圆偏振板用于有机EL面板中，并且包括偏振器和直接结合到偏振器的延迟膜。 延迟膜的面内延迟满足Re（450）

    METHOD FOR PRODUCING PHASE-DIFFERENCE FILM AND METHOD FOR PRODUCING CIRCULARLY POLARIZING PLATE
    20.
    发明申请
    METHOD FOR PRODUCING PHASE-DIFFERENCE FILM AND METHOD FOR PRODUCING CIRCULARLY POLARIZING PLATE 有权
    生产相差膜的方法及生产圆形极化板的方法

    公开(公告)号：US20160062019A1

    公开(公告)日：2016-03-03

    申请号：US14780695

    申请日：2014-03-12

    Applicant: NITTO DENKO CORPORATION

    Inventor： Takashi Shimizu ,  Satoshi Hirata ,  Seiji Kondo ,  Nao Murakami

    IPC: G02B5/30 ,  G02B1/04 ,  B29D11/00

    CPC classification number: G02B5/3083 ,  B29C55/045 ,  B29C55/16 ,  B29D11/00644 ,  B29D11/00788 ,  B29K2069/00 ,  B29K2995/0032 ,  G02B1/04 ,  G02B5/3033 ,  G02B5/3041

    Abstract: Provided is a method capable of producing a retardation film being excellent in axial accuracy, showing small changes in retardation and dimensions at the time of its heating, and having a slow axis in an oblique direction with high production efficiency. The production method for a retardation film of the present invention includes: holding left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; causing the clip pitches of the left and right clips to each independently change to obliquely stretch the film; reducing the clip pitches of the left and right clips to shrink the film in the longitudinal direction; and releasing the film from being held with the clips.

    Abstract translation: 提供一种能够制造轴向精度优异的延迟膜的方法，其加热时的相位差和尺寸变化小，生产效率高的方向具有斜轴方向的慢轴。 本发明的延迟膜的制造方法包括：保持膜的左右端部，其左右可变节距型夹具被构造成分别在纵向方向上具有夹紧间距变化; 预热胶片; 导致左右夹子的夹子间距各自独立地变化以使膜倾斜拉伸; 减小左右夹子的夹紧间距，使其沿纵向收缩; 并释放胶片不被夹子夹住。

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