High directional backlight using an integrated light guide plate

Yi-Jun Wang; Shi-Hong Ouyang; Wei-Chung Chao; Jian-Gang Lu; Han-Ping Shieh

doi:10.1364/OE.23.001567

High directional backlight using an integrated light guide plate

Yi-Jun Wang, Shi-Hong Ouyang, Wei-Chung Chao, Jian-Gang Lu, Han-Ping Shieh

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

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 degrees 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. (C) 2015 Optical Society of America

Original language	English
Pages (from-to)	1567-1575
Number of pages	9
Journal	Optics Express
Volume	23
Issue number	2
DOIs	https://doi.org/10.1364/OE.23.001567
State	Published - 26 Jan 2015

Keywords

LIQUID-CRYSTAL DISPLAY

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AU - Wang, Yi-Jun

AU - Ouyang, Shi-Hong

AU - Chao, Wei-Chung

AU - Lu, Jian-Gang

AU - Shieh, Han-Ping

PY - 2015/1/26

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AB - 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 degrees 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. (C) 2015 Optical Society of America

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