OPTICAL FILM, OPTICAL COMPENSATION FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY
申请人:FUJIFILM Corporation
公开号:US20150309348A1
公开(公告)日:2015-10-29
An optical film is provided and has retardations satisfying relations (1) to (3):
0≦Re(550)≦10; (1)
−25≦Rth(550)≦25; and (2)
|I|+|II|+|III|+|IV|>0.5 (nm), (3)
with definitions:
I=Re(450)−Re(550);
II=Re(650)−Re(550);
III=Rth(450)−Rth(550); and
IV=Rth(650)−Rth(550),
wherein Re(450), Re(550) and Re(650) are in-plane retardations measured with lights of wavelength of 450, 550 and 650 nm, respectively; and Rth(450), Rth(550) and Rth(650) are retardations in a thickness direction of the optical film, which are measured with lights of wavelength of 450, 550 and 650 nm, respectively.