| 摘要 |
<p>Disclosed is an optical compensation film for improves viewing angle of twisted nematic liquid crystal display, especially in the vertical viewing direction. The said optical compensation film contains a positively birefringent material oriented with its optic axis tilted in a plane perpendicular to the film plane, wherein the phase retardation value defined by (ne-no)d is 100±20 nm at the wavelength of 550 nm and the average tilt angle relative to the film plane is 10±5<0>, where ne and no are the extraordinary and ordinary refractive indices, respectively, and d, the thickness of the birefringent material.</p> |
