High-efficiency directional backlight design for an automotive display

被引:20
作者
Chen, Bo-Tsuen [1 ]
Pan, Jui-Wen [1 ,2 ]
机构
[1] Natl Chiao Tung Univ, Coll Photon, Inst Photon Syst, Tainan 71150, Taiwan
[2] Chi Mei Med Ctr, Dept Med Res, Tainan 71004, Taiwan
关键词
LIGHT GUIDE PLATE; VIEWING ANGLE; HIGH LUMINANCE; OPTICAL FILM; MODULE; OPTIMIZATION; IMPROVEMENT; UNIFORMITY; DIFFUSER; PROVIDE;
D O I
10.1364/AO.57.004386
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
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 degrees in the horizontal direction and 35 degrees in the vertical direction. The angle of the half-luminous intensity is 72 degrees in the horizontal direction and 20 degrees in the vertical direction. The uniformity of the illuminance reaches 82%. The DBM is suitable for use in the center information displays of automobiles. (C) 2018 Optical Society of America
引用
收藏
页码:4386 / 4395
页数:10
相关论文
共 30 条
[1]  
Blankenbach K., 2016, SID S DIGEST TECHNIC, V47
[2]   Dual-view angle backlight module design [J].
Chen, Bo-Tsuen ;
Pan, Jui-Wen .
APPLIED OPTICS, 2015, 54 (28) :E80-E87
[3]   A Study of Integrated Optical Design and Optimization for LED Backlight Module With Prism Patterns [J].
Fang, Yi-Chin ;
Tzeng, Yih-Fong ;
Wu, Kuo-Ying .
JOURNAL OF DISPLAY TECHNOLOGY, 2014, 10 (10) :840-846
[4]  
Feng Q., 2016, SID S, V47
[5]   Edge-light backlight unit using optically patterned film [J].
Fujisawa, Katsuya ;
Onishi, Ikuo ;
Fujiwara, Yasufumi .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2007, 46 (01) :194-199
[6]   LED backlight system with double-prism pattern [J].
Funamoto, Akihiro ;
Aoyama, Shigeru .
JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, 2006, 14 (10-12) :1045-1051
[7]   LED backlight designs with the flow-line method [J].
Grabovickic, Dejan ;
Benitez, Pablo ;
Minano, Juan C. ;
Chaves, Julio .
OPTICS EXPRESS, 2012, 20 (01) :A62-A68
[8]   Pattern optimization of compound optical film for uniformity improvement in liquid-crystal displays [J].
Huang, Bing-Le ;
Lin, Jin-tang ;
Ye, Yun ;
Xu, Sheng ;
Chen, En-guo ;
Guo, Tai-Liang .
OPTICS AND LASER TECHNOLOGY, 2017, 97 :254-259
[9]   Integrated backlight module to provide a collimated and uniform planar light source [J].
Huang, Bing-Le ;
Guo, Tai-Liang .
APPLIED OPTICS, 2016, 55 (26) :7307-7313
[10]   Fast optimization method based on the diffuser dot density for uniformity of the backlight module [J].
Huang, Bing-Le ;
Guo, Tai-Liang .
APPLIED OPTICS, 2016, 55 (06) :1494-1499