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公开(公告)号：US20150369981A1
公开(公告)日：2015-12-24
申请号：US14766046
申请日：2014-01-29
Applicant: NITTO DENKO CORPORATION
Inventor： Kentarou Takeda , Hironori Yaginuma , Hiroshi Sumimura , Nao Murakami
IPC: G02B5/30
CPC classification number: G02B5/305 , G02B5/3025 , G02B5/3083 , G02B27/288 , G02F2001/133541 , G02F2001/133637 , H01L51/5281 , H01L2251/5338
Abstract: There is provided a circularly polarizing plate capable of realizing a bendable display apparatus in which an excellent reflection hue is obtained and a color change due to bending is suppressed. A circularly polarizing plate according to the present invention is used in a bendable display apparatus. The circularly polarizing plate includes: a polarizer; and a retardation film arranged on one side of the polarizer. In-plane retardations of the retardation film satisfy a relationship of Re(450)
Abstract translation: 提供了一种圆偏振板，其能够实现其中获得优异的反射色调并且抑制由于弯曲引起的颜色变化的可弯曲显示装置。 根据本发明的圆偏振板用于可弯曲显示装置中。 圆偏振片包括：偏振片; 以及设置在偏振器一侧的相位差膜。 延迟膜的面内延迟满足Re（450）
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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：US10754065B2
公开(公告)日：2020-08-25
申请号：US15294055
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: An object of the present invention is to provide a retardation film excellent in various properties such as optical properties, heat resistance, mechanical properties, and reliability. The present invention relates to a retardation film containing a thermoplastic resin and composed of a single layer, in which the retardation film has a value of wavelength dispersion that is a ratio of retardations at a wavelength of 450 nm and at a wavelength of 550 nm being 0.75 or more and 0.92 or less; a birefringence at a wavelength of 550 nm and the wavelength dispersion satisfy a relationship of Δn≥0.0140×(R450/R550)−0.0082; and a photoelastic coefficient is 25×10−12 Pa−1 or less.
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Patent Agency Ranking
公开(公告)号：US10107946B2
公开(公告)日：2018-10-23
申请号：US15206764
申请日：2016-07-11
Applicant: NITTO DENKO CORPORATION
Inventor： Takeharu Kitagawa , Tadashi Kojima , Hiroshi Sumimura
Abstract: There is provided a thin polarizing plate with a retardation layer excellent in reworkability. A polarizing plate with a retardation layer according to the present invention includes: a polarizing plate including a polarizer and a protective layer on at least one side of the polarizer; a retardation layer; a first adhesive layer configured to bond the polarizing plate and the retardation layer; and a second adhesive layer arranged as an outermost layer on an opposite side of the retardation layer to the polarizing plate. An average linear expansion coefficient of the second adhesive layer when an ambient temperature is changed from −150° C. to 20° C. is 38.0(×10−5/° C.) or more, and is larger than an average linear expansion coefficient of the first adhesive layer when an ambient temperature is changed from −150° C. to 20° C.
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公开(公告)号：US10732323B2
公开(公告)日：2020-08-04
申请号：US15294040
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 resin having positive refractive index anisotropy and containing at least one bonding group of a carbonate bond and an ester bond and one or more structural units selected from the group consisting of a structural unit represented by the general formula (1) and a structural unit represented by the general formula (2), in which the value of wavelength dispersion (R450/R550) as a ratio of retardation R450 at a wavelength of 450 nm to retardation R550 at a wavelength of 550 nm is more than 0.5 and less than 1.0: (in formula (1) and formula (2), definitions of R1 to R9 are the same as in the description).
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公开(公告)号：US20190079231A1
公开(公告)日：2019-03-14
申请号：US16072771
申请日：2017-01-31
Applicant: MITSUBISHI CHEMICAL CORPORATION , NITTO DENKO CORPORATION
Inventor： Hiroshi Sumimura , Takashi Shimizu , Shingo Namiki , Yuuichi Hirami
IPC: G02B5/30 , G02F1/1333 , C08G63/64
Abstract: There is provided an optical laminate that has a conductive layer directly formed on a retardation layer, is extremely thin and has an excellent antireflection function, and further, can realize excellent display characteristics even when it is applied to a bent portion of an image display apparatus. An optical laminate according to an embodiment of the present invention includes: a polarizer; a retardation layer; and a conductive layer, which is directly formed on the retardation layer. The retardation layer has an in-plane retardation Re(550) being from 100 nm to 180 nm and satisfying a relationship of Re(450)
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公开(公告)号：US10036840B2
公开(公告)日：2018-07-31
申请号：US14766046
申请日：2014-01-29
Applicant: NITTO DENKO CORPORATION
Inventor： Kentarou Takeda , Hironori Yaginuma , Hiroshi Sumimura , Nao Murakami
IPC: G02B5/30 , G02B27/28 , H01L51/52 , G02F1/1335 , G02F1/13363
CPC classification number: G02B5/305 , G02B5/3025 , G02B5/3083 , G02B27/288 , G02F2001/133541 , G02F2001/133637 , H01L51/5281 , H01L2251/5338
Abstract: There is provided a circularly polarizing plate capable of realizing a bendable display apparatus in which an excellent reflection hue is obtained and a color change due to bending is suppressed. A circularly polarizing plate according to the present invention is used in a bendable display apparatus. The circularly polarizing plate includes: a polarizer; and a retardation film arranged on one side of the polarizer. In-plane retardations of the retardation film satisfy a relationship of Re(450)
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8.发明申请公开(公告)号：US20170023716A1
公开(公告)日：2017-01-26
申请号：US15206764
申请日：2016-07-11
Applicant: NITTO DENKO CORPORATION
Inventor： Takeharu Kitagawa , Tadashi Kojima , Hiroshi Sumimura
CPC classification number: G02B5/3016 , G02B1/14 , G02B5/305 , G02B5/3083
Abstract: There is provided a thin polarizing plate with a retardation layer excellent in reworkability. A polarizing plate with a retardation layer according to the present invention includes: a polarizing plate including a polarizer and a protective layer on at least one side of the polarizer; a retardation layer; a first adhesive layer configured to bond the polarizing plate and the retardation layer; and a second adhesive layer arranged as an outermost layer on an opposite side of the retardation layer to the polarizing plate. An average linear expansion coefficient of the second adhesive layer when an ambient temperature is changed from −150° C. to 20° C. is 38.0(×10−5/° C.) or more, and is larger than an average linear expansion coefficient of the first adhesive layer when an ambient temperature is changed from −150° C. to 20° C.
Abstract translation: 提供了具有优异的再加工性的延迟层的薄偏振片。 根据本发明的具有延迟层的偏振片包括：在偏振器的至少一侧上包括偏振片和保护层的偏振片; 延迟层; 第一粘合剂层，被配置为结合偏振片和延迟层; 以及在所述延迟层相对于所述偏振片的相反侧布置为最外层的第二粘合剂层。 当环境温度从-150℃变化到20℃时，第二粘合剂层的平均线性膨胀系数为38.0（×10 -5 /℃）以上，并且大于平均线膨胀 当环境温度从-150℃变化到20℃时第一粘合剂层的系数
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