| 摘要: | 摘要： In our previous work, IEEE/OSA Journal of Display Technology, February 2012, we examined the luminance and uniformity characteristics of a newly invented secondary optical lens with a wide emission angle called a "lightguide-diffusive component". The lightguide-diffusive component is designed for thin direct LED backlighting applications. The LED backlight module is composed of at least an LED light source, a secondary lightguide-diffusive component with a micro-structure reflective bottom surface, and a flexible printed circuit (FPC) for LED lighting without a brightness-enhanced film (BEF). Through this lightguide-diffusive component, the emission profile of a single LED is modified to provide better illumination and more uniformity. In this work, the micro-structure reflective bottom is redesigned to be shaped like a Tetrahedron Reflector Structure Array instead of a triangle cylinder structured array, resulting in a more uniform spatial light energy distribution on the emission plane of the LED backlight. The simulation results show an increase in the uniformity ratio with the new design from 72% to 76%, a 4% improvement, the angle of the luminous intensity is increased from 98 deg to 112 deg, a 14 deg improvement, a decrease in the luminance is from 9024 nits to 8551 nits, an impairment of 5%, and a decrease in the volume of the micro-structure reflector from 1.154 mm 3 to 0.767 mm 3 , a 33.5% volume reduction (cost saving).
其他題名： JDT
出版者： IEEE
出版日期： 2012-06-01
出處： Journal of display technology, 2012-06, Vol.8 (6), p.321-328
資源來源： IEEE Electronic Library (IEL)
識別號： ISSN: 1551-319X
識別號： EISSN: 1558-9323
識別號： DOI: 10.1109/JDT.2012.2184077
識別號： CODEN: IJDTAL |
