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。