Polarized backlight based on selective total internal reflection at microgrooves

被引：35

作者：

Chien, KW ^{[1
]}

Shieh, HPD ^{[1
]}

Cornelissen, H ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30010, Taiwan

来源：

APPLIED OPTICS | 2004年 / 43卷 / 24期

关键词：

Birefringent layers - Microgrooves - Polarized backlights - Total internal reflection (TIR);

D O I：

10.1364/AO.43.004672

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A polarized backlight for LCD illumination is designed and fabricated in which s-polarized light is extracted owing to selective total internal reflection at microstructures in the anisotropic layer. From the measurement, the contrast ratio in normal viewing direction can be as high as 64. Luminous uniformity of higher than 80% is achieved for polarized backlights. Furthermore, 1.6 gain in efficiency is obtained aiming for high-efficiency LCD illumination. (C) 2004 Optical Society of America.

引用

页码：4672 / 4676

页数：5