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21.发明申请公开(公告)号：US20150109667A1
公开(公告)日：2015-04-23
申请号：US14389576
申请日：2013-03-28
Applicant: NITTO DENKO CORPORATION , MITSUBISHI CHEMICAL CORPORATION
Inventor： Takashi Shimizu , Kazuki Uwada , Tadashi Kojima , Nao Murakami , Tomohiko Tanaka , Shingo Namiki
CPC classification number: G02B5/305 , C08G64/1608 , G02B1/08 , G02B5/3033 , G02B5/3083 , H01L51/5281 , Y10T156/10
Abstract: The present invention provides a long retardation film having sufficient reversed wavelength dispersion characteristics and favorable for film lamination according to a roll-to-roll system. A long retardation film of the present invention includes a polycarbonate resin or a polyester carbonate resin, an orientation angle θ which is an angle between a slow axis and a width direction satisfies the following formula (I), and a ratio of an in-plane retardation R450 measured at a wavelength of 450 nm to an in-plane retardation R550 measured at a wavelength of 550 nm satisfies the following formula (II): 38°≦θ≦52° (I) R450/R550
Abstract translation: 本发明提供了具有足够的反向波长分散特性并且有利于根据卷对卷系统的薄膜层压的长延迟薄膜。 本发明的长延迟膜包括聚碳酸酯树脂或聚酯碳酸酯树脂，取向角度; 其为慢轴与宽度方向之间的角度，满足下式（I），在450nm波长下测定的面内相位差R450与在波长550处测定的面内相位差R550的比例 nm满足下列公式（II）：38°＆nlE;＆amp; Thetas;＆nlE; 52°（I）R450 / R550 <1（II）。
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公开(公告)号：US20140327963A1
公开(公告)日：2014-11-06
申请号：US14362462
申请日：2013-07-24
Applicant: NITTO DENKO CORPORATION
Inventor： Toshiyuki Iida , Takashi Shimizu , Nao Murakami , Kazuki Uwada , Tadashi Kojima
CPC classification number: G02B5/3083 , B29C55/08 , B29D11/00634 , B29D11/00951 , B29K2029/14 , B29K2067/003 , B29K2069/00
Abstract: The present invention provides a method of producing a retardation film excellent in stretchability and capable of achieving high alignment property. The method of producing a retardation film of the present invention is the method in which a lengthy resin film is stretched in a widthwise direction thereof while being conveyed in a lengthwise direction thereof to provide a retardation film satisfying a relationship of 0.70
Abstract translation: 本发明提供一种拉伸性优异且能够得到高取向性的延迟膜的制造方法。 本发明的延迟膜的制造方法是长度方向的树脂膜沿长度方向被拉伸而延伸的方法，以提供满足关系式为0.70
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Patent Agency Ranking
公开(公告)号：US10670773B2
公开(公告)日：2020-06-02
申请号：US15294158
申请日：2016-10-14
Applicant: NITTO DENKO CORPORATION , Mitsubishi Chemical Corporation
Inventor： Shingo Namiki , Yuuichi Hirami , Hisatoshi Uehara , Hiroyuki Hayashi , Takashi Shimizu , Hiroshi Sumimura , Nao Murakami
Abstract: The retardation film of the present invention contains a thermoplastic resin and is constituted of a single layer. A value of wavelength dispersion (R450/R550) that is a ratio of a retardation R450 at a wavelength of 450 nm and a retardation R550 at a wavelength of 550 nm is 0.70 or more and 0.85 or less; and a photoelastic coefficient is 14×10−12 Pa−1 or less.
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公开(公告)号：US09804313B2
公开(公告)日：2017-10-31
申请号：US14780695
申请日：2014-03-12
Applicant: NITTO DENKO CORPORATION
Inventor： Takashi Shimizu , Satoshi Hirata , Seiji Kondo , Nao Murakami
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.
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25.发明申请公开(公告)号：US20160096312A1
公开(公告)日：2016-04-07
申请号：US14892808
申请日：2014-03-12
Applicant: NITTO DENKO CORPORATION
Inventor： Takashi Shimizu , Satoshi Hirata , Seiji Kondo , Nao Murakami
CPC classification number: B29C55/045 , B29C55/04 , B29C55/16 , B29C55/165 , B29D11/00644 , B29K2029/14 , B29K2069/00 , B29K2105/256 , B29K2995/0034 , G02B1/04 , G02B5/3041 , G02B5/3083
Abstract: Provided is a method capable of producing a retardation film suppressed in biaxiality, having a small Nz coefficient, 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 side edge portions of a film to be stretched with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; reducing, under a state in which a position at which the clip pitch of the clips on one side out of the left and right clips starts to reduce and a position at which the clip pitch of the clips on another side starts to reduce are set to different positions in the longitudinal direction, the clip pitch of each of the clips to a predetermined pitch to subject the film to oblique stretching; and releasing the clips holding the film.
Abstract translation: 本发明提供能够制造双轴抑制的延迟膜，Nz系数小，生产效率高的倾斜方向的慢轴的方法。 本发明的延迟膜的制造方法包括：分别将长度方向的夹紧间距变化的左右可变节距型夹持器保持待拉伸的薄膜的左右侧缘部; 预热胶片; 在左侧和右侧的夹子之间的一侧的夹子的夹子间距开始减小的位置和另一侧的夹子的夹子间距开始减小的位置被设定为 在纵向上的不同位置，每个夹子的夹子间距以预定间距进行，以使薄膜倾斜拉伸; 并释放夹持胶片的夹子。
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公开(公告)号：US20150249231A1
公开(公告)日：2015-09-03
申请号：US14417243
申请日：2013-07-04
Applicant: NITTO DENKO CORPORATION
Inventor： Hironori Yaginuma , Kentarou Takeda , Takashi Shimizu , Kazuki Uwada , Nao Murakami
CPC classification number: H01L51/5293 , G02B5/3033 , G02B5/3083 , H01L27/32 , H01L27/3276 , H01L51/5281 , H01L51/56 , H01L2251/55 , H04M1/0266
Abstract: There is provided a display apparatus that can suppress the occurrence of a crack in a circularly polarizing plate in its manufacturing process without reducing designability and mass productivity. A display apparatus according to an embodiment of the present invention includes: a display element; and a circularly polarizing plate placed on a viewer side of the display element. The circularly polarizing plate includes a polarizer and a retardation film. In-plane retardations of the retardation film satisfy a relationship represented by the below-indicated expression (1); and an angle θ1 formed between a slow axis of the retardation film and a direction in which a wiring crimping portion provided along at least one side of a peripheral edge portion of the display element extends satisfies a relationship represented by the below-indicated expression (2): Re(450)
Abstract translation: 提供了一种显示装置，其可以在其制造过程中抑制圆偏振板中的裂纹的发生，而不会降低设计性和批量生产率。 根据本发明实施例的显示装置包括：显示元件; 以及放置在显示元件的观察者侧的圆偏振片。 圆偏振片包括偏振片和延迟膜。 延迟膜的面内延迟满足由下述式（1）表示的关系; 并且形成在延迟膜的慢轴与沿着显示元件的周缘部的至少一侧设置的布线压接部的延伸方向的角度θ1满足由下述式表示的关系 （2）：Re（450）
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公开(公告)号：US20150160387A1
公开(公告)日：2015-06-11
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
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）
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