Patent ID: 8736799
Filing Date: 2014-05-27
Classification: G02B,G02F

Abstract:
1. An optical compensation film for vertical alignment liquid crystal displays, on which at least one biaxial compensation film and one TAC compensation film are provided, a light path difference (LCΔND) is in the range of 324.3-342.8 nm, and a pretilt angle is in a range of 85 to 90 degrees when measured at a wavelength of 550 nm, and wherein: an in-plain retardation value Ro of the biaxial compensation film is in the range of 48-84 nm, an out-of-plain retardation value Rth of the biaxial compensation film is in the range of 160-280 nm, and a retardation value Rth of the TAC compensation film is within a range between Y1 and Y2, wherein: X representing the out-of-plain retardation value Rth.