title: High directional backlight using an integrated light guide plate.
abstract: A high directional backlight system that combined a composite microstructure light guide plate (LGP) with a collimated light source was proposed for eco-displays. The collimated planar light was expanded from a point light source and guided towards the normal direction by utilizing the micro-prism array on LGP. High uniformity of spatial luminous, 91%, with a narrow viewing cone of ± 4° can be achieved without additional optical films. Moreover, compared to the conventional backlight, only 5% of power consumption was needed to keep the same luminance, hence, the optical efficiency increased by a factor of 1.47.
authors.forename: Yi-Jun
authors.initials: YJ
authors.lastname: Wang
authors.forename: Shi-Hong
authors.initials: SH
authors.lastname: Ouyang
authors.forename: Wei-Chung
authors.initials: WC
authors.lastname: Chao
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Lu
authors.forename: Han-Ping D
authors.initials: HP
authors.lastname: Shieh