Cellulose Acylate Film, and Polarizing Plate and Liquid-Crystal Display Device Using the Same
申请人:Sakurazawa Mamoru
公开号:US20080173215A1
公开(公告)日:2008-07-24
A cellulose acylate film comprising: at least one retardation regulator; and at least one UV absorber having at least one absorption maximum in a wavelength range of from 250 nm to 380 nm.
Cellulose Acylate Film, Method for Producing Same, Optically Compensatory Film, Anti-Reflection Film, Polarizing Plate and Image Display Device
申请人:Sasata Katsumi
公开号:US20110020600A1
公开(公告)日:2011-01-27
A cellulose acylate film that has a maximum thickness difference (P−V value) of 1 μm or less within a range of a diameter of 60 mm with an arbitrary point as center, and that has an in-plane retardation Re
(λ)
satisfying a relationship Re
(590)
)≦5 nm and a thickness-direction retardation Rth
(λ)
satisfying a relationship |Rth
(590)
|≦60 nm, wherein Re
(λ)
represents an in-plane retardation (Re) value (unit: nm) at a wavelength of λnm; and Rth
(λ)
) represents a thickness-direction retardation (Rth) value (unit: nm) at a wavelength of λnm.
An optical film is provided and has retardations satisfying relations (1) to (3):
(1) 0≦Re(550)≦10;
(2) −25 ≦Rth(550)≦5; and
(3) |I|+|II|+|III|+|IV|>0.5 (nm), 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.
POLYMER FILM, OPTICALLY-COMPENSATORY FILM, PROCESS FOR PRODUCING THE SAME, POLARIZING PLATE AND LIQUID-CRYSTAL DISPLAY DEVICE
申请人:OMATSU Tadashi
公开号:US20120327343A1
公开(公告)日:2012-12-27
A polymer film that has: a ratio R (VT/VM) of a sound velocity in a transverse direction VT to a sound velocity in a machine direction VM of from 1.05 to 1.50; and an in-plane retardation Re(λ) and a thickness-direction retardation Rth(λ) satisfying formula (I): (I) 0≦Re(630)≦10, and |Rth(630)|25, wherein Re(λ) represents an in-plane retardation at a wavelength of λ (nm); and Rth(λ) represents a thickness-direction retardation at a wavelength of λ (nm).
POLYMER FILM, AND OPTICALLY-COMPENSATORY FILM, POLARIZER AND LIQUID-CRYSTAL DISPLAY DEVICE COMPRISING THE SAME
申请人:Nishiura Takako
公开号:US20130253182A1
公开(公告)日:2013-09-26
A polymer film that has an in-plane retardation Re
(λ)
and a thickness-direction retardation Rth
(λ)
satisfying formula (i) and (ii), and that further has a surface energy of at least one surface is from 50 mN/m to 80 mN/m:
0≦
Re
(630)
≦10, and |
Rth
(630)
|≦25; (i)
and
|
Re
(400)
−Re
(700)
|≦10, and |
Rth
(400)
−Rth
(700)
|≦35. (ii)
in the formulae, Re
(λ)
and Rth
(λ)
are measurement values at the wavelength of λ nm, and an optically-compensatory film, an optical material such as a polarizer and a liquid-crystal display device using the polymer film.