Patent ID: 9720280
Date: 2017-08-01
CPC Classifications: C09K,G02B,G02F

Claim:
1. A compensation film comprising: a first retardation layer comprising a polymer; a second retardation layer comprising a liquid crystal having positive birefringence; and a compensation layer comprising a liquid crystal having a vertical alignment property, wherein the first retardation layer includes an elongated polymer layer including the polymer having positive birefringence, an angle between a slow axis of the first retardation layer and a slow axis of the second retardation layer is in a range of about 85 degrees to about 95 degrees, an in-plane retardation (Re1) of the first retardation layer satisfies the following inequation: Re1(450 nm)≧Re1(550 nm)≧Re1(650 nm), an in-plane retardation (Re2) of the second retardation layer satisfies the following inequation: Re2(450 nm)>Re2(550 nm)>Re2(650 nm), an entire in-plane retardation (R an in-plane retardation (R a thickness direction retardation (R the entire in-plane retardation (R the entire in-plane retardation (R