Grating-based luminance-enhancement film for LCD backlights

摘要

LCD backlights have to meet two contradictory requirements: high luminance and uniform emission. Utilizing the characteristics of diffraction gratings, we have developed micro-patterned optical films which provide highly collimated emission and good uniformity at the same time. The design strategies, optical characteristics and high-precision patterning of the grating-based luminance-enhancement films will be presented.