標題: Switchable viewing angle display with a compact directional backlight and striped diffuser
作者: Wang, Yi-Jun
Lu, Jian-Gang
Chao, Wei-Chung
Shieh, Han-Ping D.
光電工程學系
顯示科技研究所
Department of Photonics
Institute of Display
公開日期: 10-Aug-2015
摘要: A compact high-directionality backlight module combined with a striped diffuser is proposed to achieve an adjustable viewing angle for ecodisplay. The micro-prisms on the compact light guide plate guide the emitting rays to the normal viewing angle, whereas a set of striped diffusers scatter the rays to a wide viewing angle. View cones of +/- 10 degrees/+/- 55 degrees were obtained for narrow/wide viewing modes with 88%/85% uniformity of spatial luminance, respectively. Compared with the conventional backlight, the optical efficiencies were increased by factors of 1.47 and 1.38 in narrow and wide viewing modes, respectively. In addition, only 5% of power consumption was needed when the backlight worked in private narrow viewing mode to maintain the same luminance as that of a conventional backlight. (C) 2015 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.23.021443
http://hdl.handle.net/11536/128316
ISSN: 1094-4087
DOI: 10.1364/OE.23.021443
期刊: OPTICS EXPRESS
Volume: 23
Issue: 16
起始頁: 21443
結束頁: 21454
Appears in Collections:Articles


Files in This Item:

  1. d2d4ad7831c20ba0e449e30395ec6ca9.pdf