Patent ID: 8223280
Filing Date: 2012-07-17
Classification: G02B,G02F,H04N

Abstract:
1. A phase difference element comprising: a base film having optical anisotropy; and a phase difference layer having optical anisotropy formed on the base film, wherein the phase difference layer has at least two kinds of phase difference regions with slow axes having different directions from each other, the at least two kinds of phase difference regions are adjacently arranged with a border interposed therebetween, in an in-plane direction of the base film, each of the phase difference regions has the slow axis in a direction intersecting with the border at an angle other than a right angle, the at least two kinds of the phase difference regions each have retardation of [+]λ/4, and the base film has a slow axis in a direction parallel or orthogonal to the border.