Patent ID: 9164308
Filing Date: 2015-10-20
Classification: G02F

Abstract:
1. An optical compensation structure, characterized in that it comprises a front side polarizer and a rear side polarizer arranged at both sides of a VA liquid crystal unit; wherein: the front side polarizer, arranged at a side in the light-exiting direction of the VA liquid crystal unit, includes a front side polarization unit as well as a biaxial film arranged between the front side polarization unit and the VA liquid crystal unit; and the rear side polarizer includes a rear side polarization unit as well as a first rear side TAC film arranged between the rear side polarization unit and the VA liquid crystal unit; the biaxial film has an in-plane delay Ro of 50.4-84 nm at the wavelength of 550 nm, and a thickness direction delay Rth-b of 168-280 nm at the wavelength of 550 nm; the thickness direction delay Rth-t of the first rear side TAC film at the wavelength of 550 nm has a lower limit Y1 and an upper limit Y2 that are respectively defined through the following formulas: