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Self-discharge synchronizing operations in the external electrode fluorescent multi-lamps backlight

Guangsup Cho et al 2003 J. Phys. D: Appl. Phys. 36 2526-2530   doi: 10.1088/0022-3727/36/20/015  Help

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Guangsup Cho1, Nam O Kwon1, Young M Kim1, Sung J Kim1, Tae S Cho1, Bong S Kim1, June G Kang1, Eun H Choi1, Ung W Lee2, Soon C Yang2 and Han S Uhm3
1 Charged Particle Beam and Plasma Laboratory, Department of Electrophysics, Kwangwoon University, 447-1 Wollgye-Dong, Nowon-Gu, Seoul 139-701, Korea
2 Department of Physics, Mokpoo National University, Muan-Gun, Chungye-Myun, Chon-Nam, 534-729, Korea
3 Department of Molecular Science and Technology, Ajou University, San 5 Wonchon-Dong, Paldal-Gu, Suwon 442-749, Korea
E-mail: gscho@daisy.kw.ac.kr

Abstract. The external electrode fluorescent lamp (EEFL) is operated in a high frequency mode because the lamp lighting is basically a dielectric barrier discharge. The self-discharge synchronization is defined by synchronizing the self-discharge time of the dielectric wall charge with the voltage rising and falling time. It is shown that for the self-discharge synchronization a high brightness is obtained in the multi-lamps backlight connected in parallel with the EEFLs operated with square waves from a switching inverter. The frequency for self-discharge synchronizing is also shown to increase as the driving voltage increases.

Print publication: Issue 20 (21 October 2003)
Received 28 June 2003
Published 1 October 2003

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