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http://dx.doi.org/10.4313/TEEM.2008.9.1.016

Optical Simulation of Direct-type Backlight Unit for Medical Application  

Han, Jeong-Min (Department of Electrical and Electronic Engineering, Yonsei University)
Han, Jin-Woo (Department of Electrical and Electronic Engineering, Yonsei University)
Seo, Dae-Shik (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Transactions on Electrical and Electronic Materials / v.9, no.1, 2008 , pp. 16-19 More about this Journal
Abstract
In this study, it was investigated about optical simulation in direct-type backlight design. Direct-type backlight has been used high-brightness backlight such as medical LCD application. The key parameter in designing direct-type backlight was consists of three geometrical dimension such as the distance of two lamps, the gap of lamp and reflection plate and the number of lamps. It has many of variations in optical design and it causes the different properties in backlight system. It shows the best values of above parameters; 26 mm of the distance of two lamps, 4.5 mm of the gap of lamp and reflection plate and 16 lamps. And we produced the specimen as above condition, and acquired good result in backlight such as the value of the brightness is 6423 nit in center of emission area and less than 5 % in brightness uniformity. It shows the effective ways of designing backlight system using optical simulation method for medical LCD application.
Keywords
TFT-LCD; Direct type backlight; Optical simulation; High brightness; Medical LCD application;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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