| abstract |
The optical film of this invention is the scattering-dichromatic absorption composite polarizer which consists of a film of the structure in which a micro area | region was disperse | distributed in the matrix formed by the translucent resin containing an iodine type light absorber, and transparent formed by a solid polymer As a film, when the in-plane refractive index becomes the largest, the X axis | shaft, the direction perpendicular | vertical to the X-axis, the thickness direction of a film is made into the Z-axis, and the refractive index of each axial direction is set to nx, ny, nz, It has a birefringent film which satisfies the characteristic of nx> ny> nz. Such an optical film has high contrast over a wide viewing angle, has high transmittance and high polarization, and can suppress nonuniformity in transmittance at the time of black display. |