19.3: Optimized LCD Backlight for Outdoor and High Brightness Applications | Zendy

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19.3: Optimized LCD Backlight for Outdoor and High Brightness Applications

Author(s) -

Blanchard Randall

Publication year - 2001

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1889/1.1831854

Subject(s) - backlight , liquid crystal display , brightness , luminance , optics , fluorescent lamp , computer graphics (images) , materials science , computer science , optoelectronics , physics

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. It uses an inductively coupled electrodeless fluorescent lamp. The backlight lamp has a lifetime of 100,000 hours with instant starting at −40°C and a stable light output over a 70°C temperature span. The backlight design has been optimized for luminance uniformity and efficiency within a display depth of 6″. A wide format 22″ LCD display with this backlight technology provides an image brightness of 1,200 cd/m 2 from a single 150‐watt lamp.

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