49.4: High Power Dimming Control for a Large Area LCD Backlight

Abstract

A new method of high voltage dimming control is proposed and tested for the multi-lamps backlight of a high power system. Direct switching without a feedback circuit at the lamp-load lines controls the lamp current for high power dimming.

P-84: Electron Plasma Propagation in the External Electrode Fluorescent Lamps

“…EEFLs and EEFL-BLUs have been introduced as a new technology for LCD backlight since 2000 [1][2][3][4][5]. Recently the 32" LCD-TV installed with the backlight units of the multi-EEFLs driven by a single inverter has been appeared in the Korea industry.…”

47.4: The Center Balancing Operation of CCFLs and EEFLs for LCD Backlight

“…In this report a new operation method is suggested and the fundamental characteristics are investigated in the operation of CCFLs, EEFLs, and the backlight system. A large area LCD TVs installed with the multi-EEFLs [1][2][3][4] driven by a single inverter is expected to appear among Korean industry in the near future. Figure 1 shows the schematic drawings of the center balancing operation suggested in this report.…”