Patent ID: 6023317
Filing Date: 2000-02-08
Classification: G02F

Abstract:
degree.-100.degree. as said at least one normally incident visible wavelength of light passes therethrough when said liquid crystal layer is in substantially the off-state thereby defining a twisted nematic display;first and second negative retarders sandwiching said liquid crystal layer therebetween, each of said first and second negative retarders having a retardation value of from about -60 to -200 nm;a positive retarder on one side of said liquid crystal layer; andwherein said display outputs contrast ratios of at least about 30:1 or 30 at horizontal viewing angles along the 0.degree. vertical viewing axis of about .+-.50.degree., and of at least about 20:1 or 20 at vertical viewing angles along the 0.degree. horizontal viewing axis of about 0.degree. to +