An STN liquid crystal display device includes a polarizer and an analyzer which are arranged to sandwich an STN liquid crystal cell, and two biaxial retardation plates arranged between a substrate of the liquid crystal cell and the analyzer. The polarizer is arranged such that its light-transmitting...http://www.google.es/patents/US5227903?utm_source=gb-gplus-sharePatente US5227903 - Liquid crystal display device with at least one biaxial retardation film having n.sub.x >n.sub.z >n.sub.y
Liquid crystal display device with at least one biaxial retardation film ...