公开(公告)号：US20160062020A1

公开(公告)日：2016-03-03

申请号：US14784234

申请日：2014-05-14

Applicant: KONICA MINOLTA, INC.

Inventor： Midori KOGURE ,  Yukihito NAKAZAWA ,  Norie TANIHARA ,  Kenji MISHIMA ,  Rieko REN ,  Kouji TASHIRO

IPC: G02B5/30 ,  G02F1/13363

CPC classification number: G02B5/3083 ,  G02F1/13363 ,  G02F2001/133637

Abstract: A retardation film includes a cellulose ether derivative and a compound having a negative intrinsic birefringence, wherein the retardation film includes: a transmittance at a wavelength of 320 to 400 nm of 89% or more; an in-plane retardation Ro550 at a wavelength of 550 nm of 115 to 160 nm; and a ratio (Ro450/Ro550) of an in-plane retardation Ro450 at a wavelength of 450 nm to the Ro550 of 0.72 to 0.94.

Abstract translation: 相位差膜包括纤维素醚衍生物和具有负的固有双折射的化合物，其中所述延迟膜包括：在320〜400nm的波长下的透射率为89％以上; 波长550nm的面内延迟Ro550为115〜160nm; 波长450nm的面内相位差Ro450与Ro550的比值（Ro450 / Ro550）为0.72〜0.94。

公开(公告)号：US20160003995A1

公开(公告)日：2016-01-07

申请号：US14770339

申请日：2014-03-12

Applicant: KONICA MINOLTA, INC.

Inventor： Yukihito NAKAZAWA ,  Midori KOGURE ,  Norie TANIHARA ,  Kenji MISHIMA ,  Rieko REN

IPC: G02B5/30 ,  G02B1/111 ,  G02B1/04

CPC classification number: G02B5/3083 ,  G02B1/04 ,  G02B1/111 ,  G02B5/3033 ,  H01L51/5293 ,  C08L1/00

Abstract: An optical film includes a cellulose derivative, the film having an in-plane retardation Ro550 within 120 to 160 nm measured at 550 nm wavelength, and a ratio Ro450/Ro550 of in-plane retardations Ro450 and Ro550 within 0.65 to 0.99, respectively, measured at 450 and 550 nm wavelengths, under a 23° C. atmosphere with a relative humidity of 55%, wherein, substituents of glucose skeletons of the cellulose derivative satisfy: part of the substituents have multiple bonds, and the average degree of substitution of the substituents having multiple bonds is within 0.1 to 3.0 per glucose skeleton unit; the maximum absorption wavelength of the substituents having multiple bonds is within 220 to 400 nm; and at least part of the substituents in the glucose skeletons form ether bonds with the glucose skeletons, and the average degree of substitution of the substituents having ether bonds is within 1.0 to 3.0 per glucose skeleton unit.

Abstract translation: 光学膜包括纤维素衍生物，该膜具有在550nm波长下测量的在120至160nm内的面内延迟Ro550和在0.65至0.99内的面内延迟Ro450和Ro550的比Ro450 / Ro550分别在0.65至0.99之间 在相对湿度为55％的23℃的气氛下，在450和550nm波长处，其中纤维素衍生物的葡萄糖骨架的取代基满足：部分取代基具有多个键，并且平均取代度 具有多个键的取代基在每个葡萄糖骨架单元的0.1-3.0范围内; 具有多个键的取代基的最大吸收波长在220-400nm内; 并且葡萄糖骨架中的至少一部分取代基与葡萄糖骨架形成醚键，并且具有醚键的取代基的平均取代度在每个葡萄糖骨架单元1.0-3.0之内。