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Optimized LCD backlight for outdoor and high‐brightness applications
Author(s) -
Blanchard Randall
Publication year - 2002
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1827862
Subject(s) - backlight , liquid crystal display , brightness , luminance , optics , computer science , materials science , computer graphics (images) , optoelectronics , computer vision , physics
Abstract— A high‐intensity backlight for use with large LCD panels has been developed. It supports the performance and environmental requirements of a display intended for outdoor applications. This backlight technology uses an inductively coupled electrodeless fluorescent lamp with a lifetime of 100,000 hours, instant starting at −40°C and a stable light output over a temperature span of 70°C. The backlight design has been optimized for luminance uniformity and efficiency within a display depth of 6 in. A 21.3‐in. LCD monitor, using this backlight technology, provides an image brightness of 2000 cd/m 2 from a single 150‐W lamp.