Optical resin film and polarizing film and liquid crystal display device using the same
First Claim
Patent Images
1. An optical resin film, which has Re (λ
- ) and Rth (λ
) satisfying retardation requirements (A) to (D), and has an in-plane width direction retardation (Re) variation coefficient of 5% or less and a thickness direction retardation (Rth) variation coefficient of 10% or less;
(A) 0.1<
Re (450)/Re (550)<
0.95 (B) 1.03<
Re (650)/Re (550)<
1.93 (C) 0.4<
(Re/Rth (450))/(Re/Rth (550)))<
0.95 (D) 1.05<
(Re/Rth (650)/(Re/Rth (550))<
1.9 wherein Re (λ
) represents an in-plane retardation value of the optical resin film with respect to light having a wavelength of λ
nm;
Rth (λ
) represents a thickness direction retardation value of the optical resin film with respect to light having a wavelength of λ
nm; and
Re/Rth (λ
) represents a ratio of an in-plane retardation value to a thickness direction retardation value of the optical resin film with respect to light having a wavelength of λ
nm (unit;
nm).
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0 Petitions
Accused Products
Abstract
An optical resin film, which has Re (λ) and Rth (λ) satisfying retardation requirements (A) to (D), and has an in-plane width direction retardation (Re) variation coefficient of 5% or less and a thickness direction retardation (Rth) variation coefficient of 10% or less: (A) 0.1<Re (450)/Re (550)<0.95 (B) 1.03<Re (650)/Re (550)<1.93 (C) 0.4<(Re/Rth (450))/(Re/Rth (550)))<0.95 (D) 1.05<(Re/Rth (650)/(Re/Rth (550))<1.9, and a polarizing plate and a liquid crystal display device using the optical resin film.
34 Citations
8 Claims
-
1. An optical resin film, which has Re (λ
- ) and Rth (λ
) satisfying retardation requirements (A) to (D), and has an in-plane width direction retardation (Re) variation coefficient of 5% or less and a thickness direction retardation (Rth) variation coefficient of 10% or less;
(A) 0.1<
Re (450)/Re (550)<
0.95(B) 1.03<
Re (650)/Re (550)<
1.93(C) 0.4<
(Re/Rth (450))/(Re/Rth (550)))<
0.95(D) 1.05<
(Re/Rth (650)/(Re/Rth (550))<
1.9wherein Re (λ
) represents an in-plane retardation value of the optical resin film with respect to light having a wavelength of λ
nm;
Rth (λ
) represents a thickness direction retardation value of the optical resin film with respect to light having a wavelength of λ
nm; and
Re/Rth (λ
) represents a ratio of an in-plane retardation value to a thickness direction retardation value of the optical resin film with respect to light having a wavelength of λ
nm (unit;
nm). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- ) and Rth (λ
Specification