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    • 1. 发明申请
    • Optical film and image viewing display
    • 光学胶片和影像观看显示
    • US20060072057A1
    • 2006-04-06
    • US11237953
    • 2005-09-29
    • Shuuji YanoKenji YodaMie Nakata
    • Shuuji YanoKenji YodaMie Nakata
    • G02F1/1335
    • G02B5/3083G02F1/133634G02F1/134363
    • An optical film of the invention comprises a polarizing plate obtained by laminating a transparent protective film on at least one surface of a polarizer and a retardation film laminated on one surface of the polarizing plate so that the absorption axis of the polarizing plate and the slow axis of the retardation film are perpendicular to or in parallel with each other, wherein the retardation film satisfies a relation of nx>nz>ny, and the transparent protective film is disposed at least on the retardation film side and is a cellulose-based film with retardation in the thickness direction, which is expressed by (Rth)=(nx−nz)×d, in the range of 0 to 10 nm, where in each of the films, a refractive index of a slow axis direction, a refractive index of a fast axis direction and a refractive index in the thickness direction at a wavelength of 590 nm are represented by nx, ny and nz, respectively, that a film thickness is represented d (nm) and that the slow axis direction is defined as a direction in which a refractive index in a film plane is maximized. The optical film is useful for image viewing display to provide a high contrast ratio over a wide range and to realize a better view.
    • 本发明的光学膜包括通过在偏振片的至少一个表面上层叠透明保护膜而获得的偏振片和层叠在偏振片的一个表面上的延迟膜,使得偏振片的吸收轴和慢轴 的延迟膜彼此垂直或相互平行,其中延迟膜满足nx> nz> ny的关系,透明保护膜至少设置在相位差膜侧,并且是具有 在(Rth)=(nx-nz)×d表示的厚度方向上的延迟在0〜10nm的范围内,其中在每个膜中,慢轴方向的折射率,折射率 波长590nm处的厚度方向的快轴方向和折射率分别由nx,ny,nz表示,膜厚为d(nm),慢轴方向为di 其中膜平面中的折射率最大化的方向。 光学膜可用于图像观看显示器,以在宽范围内提供高对比度并实现更好的视野。
    • 5. 发明授权
    • Polarizing plate, manufacturing method thereof, optical film and image display
    • 偏光板,其制造方法,光学膜和图像显示
    • US08551612B2
    • 2013-10-08
    • US12744601
    • 2008-11-19
    • Megumi KatouHiroaki MizushimaMie NakataTakemichi Yoshida
    • Megumi KatouHiroaki MizushimaMie NakataTakemichi Yoshida
    • G02F1/1335G02B5/30B32B37/12
    • G02B5/3033G02F1/133528G02F1/13363
    • A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer; and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective film on one side comprises a lactone ring structure-containing (meth)acrylic resin and has an in-plane retardation of less than 40 nm and a thickness direction retardation of less than 80 nm, and the transparent protective film on the other side is a retardation plate that comprises a cellulose ester and satisfies the relation: nx>ny>nz, wherein nx is a refractive index in an X-axis direction where the in-plane refractive index is maximum, ny is a refractive index in a Y-axis direction perpendicular to the X-axis, and nz is a refractive index in a Z-axis direction corresponding to the thickness direction. The polarizing plate can satisfy durability and display uniformity (unevenness).
    • 本发明的偏光板包括聚乙烯醇系偏振片, 以及设置在偏振片两侧的透明保护膜,其中夹在偏光镜和透明保护膜之间的粘合剂层,其中透明保护膜一侧包含含内酯环结构的(甲基)丙烯酸树脂, 平面延迟小于40nm,厚度方向延迟小于80nm,另一侧的透明保护膜是包含纤维素酯的相位差板,满足nx> ny> nz的关系,其中nx为 面内折射率最大的X轴方向的折射率,ny是与X轴垂直的Y轴方向的折射率,nz是与Z轴方向对应的折射率 到厚度方向。 偏振板可以满足耐久性和显示均匀性(不均匀性)。
    • 8. 发明申请
    • POLARIZING PLATE, MANUFACTURING METHOD THEREOF, OPTICAL FILM AND IMAGE DISPLAY
    • 偏光板,其制造方法,光学膜和图像显示
    • US20100253884A1
    • 2010-10-07
    • US12744601
    • 2008-11-19
    • Megumi KatouHiroaki MizushimaMie NakataTakemichi Yoshida
    • Megumi KatouHiroaki MizushimaMie NakataTakemichi Yoshida
    • G02F1/1335G02B5/30B32B37/00
    • G02B5/3033G02F1/133528G02F1/13363
    • A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer; and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective film on one side comprises a lactone ring structure-containing (meth)acrylic resin and has an in-plane retardation of less than 40 nm and a thickness direction retardation of less than 80 nm, and the transparent protective film on the other side is a retardation plate that comprises a cellulose ester and satisfies the relation: nx>ny>nz, wherein nx is a refractive index in an X-axis direction where the in-plane refractive index is maximum, ny is a refractive index in a Y-axis direction perpendicular to the X-axis, and nz is a refractive index in a Z-axis direction corresponding to the thickness direction. The polarizing plate can satisfy durability and display uniformity (unevenness).
    • 本发明的偏光板包括聚乙烯醇系偏振片, 以及设置在偏振片两侧的透明保护膜,其中夹在偏光镜和透明保护膜之间的粘合剂层,其中透明保护膜一侧包含含内酯环结构的(甲基)丙烯酸树脂, 平面延迟小于40nm,厚度方向延迟小于80nm,另一侧的透明保护膜是包含纤维素酯的相位差板,满足nx> ny> nz的关系,其中nx为 面内折射率最大的X轴方向的折射率,ny是与X轴垂直的Y轴方向的折射率,nz是与Z轴方向对应的折射率 到厚度方向。 偏振板可以满足耐久性和显示均匀性(不均匀性)。