LASER BACKSIDE ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

Provided are a laser backside illumination device, which is reduced in thickness and has improved contrast with uniform luminance, and a liquid crystal display device. A laser backside illumination device (100) is provided with a laser light source (1); a splitting optical system (101) for splitting a laser beam emitted from the laser light source (1) into a plurality of beams; and a plurality of illuminating optical systems (102) for illuminating, from the backside, a liquid crystal panel (5) which modulates light intensity two-dimensionally. The illuminating optical systems (102) expand the laser beams split by the splitting optical system (101), and illuminate, respectively, regions of the liquid crystal panel (5) which is divided into the regions.