OPTICAL COMPENSATION SHEET, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To realize a display with a wide viewing angle and without unevenness in a screen. SOLUTION: A sheet of polymer film having a 20-70 nm Re retardation value, a 70-400 nm Rth retardation value and <=1.5 deg. standard deviation of the phase lagging axis angle is utilized as an optical compensation sheet.