A novel quarter-wave retardation film for improving viewing angle properties in time-sequential stereoscopic 3D-LCDs

We have successfully developed a quarter-wave retardation film (QWF) for wide viewing angle 3D liquid crystal displays (3D-LCDs) that provides high luminance, low crosstalk, low color change, and low head-tilt-angle dependency. It was found that the out-of-plane retardation (Rth) of the QWF in the LCD needs to be close to 0 nm in order to improve the 3D display properties at an off-axis position and that the in-plane retardation (Re) needs to be adjusted from 120 to 130 nm to achieve low color change with head tilting. We adopted a coating process for making our QWF because of its potential for retardation control. 3D-LCDs with this QWF whose Rth was nearly zero had high performance and allowed off-axis other than on-axis.