公开(公告)号：US20140322554A1

公开(公告)日：2014-10-30

申请号：US14260475

申请日：2014-04-24

Applicant: FUJIFILM Corporation

Inventor： Shusuke ARITA ,  Hiromichi FURUKAWA

IPC: C08L33/08 ,  C08F220/18 ,  C08L33/14

CPC classification number: G02B5/3083 ,  C08L33/066 ,  C08L2203/16 ,  Y10T428/31935

Abstract: An optical film contains an acrylic resin, in which at least one of a modulus of elongation on a machine direction and a modulus of elongation on a direction vertical to the machine direction is less than 2.3×109 N/m2 and an in-plane retardation value Re (nm) of the optical film represented by the following formula (i) satisfies the following formula (ia): Re=(nx−ny)×d  Formula (i) ΔRe=Re(10)−Re(0)≦10  Formula (ia) wherein, in the formulae, nx represents a refractive index in an in-plane slow axis direction of the optical film, ny represents a refractive index in an in-plane fast axis direction of the optical film, d represents a thickness (nm) of the optical film, Re(10) represents a retardation value when the optical film is stretched 10%, and Re(0) represents a retardation value in an unstretched state of the optical film.

Abstract translation: 光学膜包含丙烯酸树脂，其中机器方向上的伸长模量和垂直于机器方向的方向上的伸长模量中的至少一个小于2.3×10 9 N / m 2，并且面内延迟 由下式（i）表示的光学膜的Re（nm）值满足下式（ia）：Re =（nx-ny）×d式（i）＆Dgr; Re = Re（10）-Re 式（ia）其中，在该式中，nx表示光学膜的面内慢轴方向的折射率，ny表示光学膜的面内快轴方向的折射率， d表示光学膜的厚度（nm），Re（10）表示光学膜拉伸10％时的延迟值，Re（0）表示光学膜的未拉伸状态的延迟值。