High-efficiency directional backlight design for an automotive display

Bo Tsuen Chen, Jui-Wen Pan*

*Corresponding author for this work

研究成果: Article

4 引文 斯高帕斯(Scopus)

摘要

We propose a high-efficiency directional backlight module (DBM) for automotive display applications. The DBM is composed of light sources, a light guide plate (LGP), and an optically patterned plate (OPP). The LGP has a collimator on the input surface that serves to control the angle of the light emitted to be in the horizontal direction. The OPP has an inverse prism to adjust the light emission angle in the vertical direction. The DBM has a simple structure and high optical efficiency. Compared with conventional backlight systems, the DBM has higher optical efficiency and a suitable viewing angle. This is an improvement in normalized on-axis luminous intensity of 2.6 times and a twofold improvement in optical efficiency. The viewing angles are 100° in the horizontal direction and 35° in the vertical direction. The angle of the half-luminous intensity is 72° in the horizontal direction and 20° in the vertical direction. The uniformity of the illuminance reaches 82%. The DBM is suitable for use in the center information displays of automobiles.

原文English
頁(從 - 到)4386-4395
頁數10
期刊Applied Optics
57
發行號16
DOIs
出版狀態Published - 1 六月 2018

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