Micro-holographic light guide plates in LED BLUs

被引：0
|
作者：
Park, Seung Ryong [1 ]
Kwon, Oh Jang [1 ]
Song, Seok-Ho [1 ]
Lee, Hong-Seok [2 ]
Choi, Hwan Young [2 ]
机构：
[1] Hanyang Univ, BK21 Ctr, Dept Phys, Mt 17, Seoul, South Korea
[2] Samsung Adv Inst Technol, Display Device & Mat Lab, LCD Opt & Mat PT, Yongin, Gyeonggi Do, South Korea
来源：
IDW '06: PROCEEDINGS OF THE 13TH INTERNATIONAL DISPLAY WORKSHOPS, VOLS 1-3 | 2006年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We suggest a micro-holographic light guide plate (mu-HLGP) structure for LED backlight units. A 2-dimesional array of micro-holographic gratings is fabricated on top surface of the light guide plate with a wide range of conical grating directions. Optimization in orientation of the micro-holographic gratings is performed by rigorous coupled-wave analysis, leading to a characteristic function for deriving optimal conical-angle distribution of grating direction. Micro-holographic lithography and UV embossing are used to fabricate the micro-gratings with different conical angles. Hot-spot images and light-propagation line-patterns which were seriously occurred in LED BLUs are successfully eliminated in our mu-HLGP, when a LED is placed at a corner of the light guide plate.
引用
收藏
页码：1025 / +
页数：2
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