40.4: Capacity Coupled Electrodeless Discharge Backlight Driven by Switching Inverter for 17″ and 20.1″ LCD TVs

Abstract

A backlight arraying electrodeless fluorescent lamps assembled with capacity coupled electrode connector has been improved to be commercialized with a newly developed switching inverter as small as size about 10×5×1 cm. With the square pulses of the driving frequency 55 kHz, the high efficiency of 60 lm/W and the brightness of about 8,000 cd/m2 in the 17‐inch and 20.1‐inch diagonal panels, have been obtained, respectively.

49.3: High Power Single Stage Inverter for the Multi‐Lamps Backlight of 24″ 32″, and 40″ LCD TVs

“…The inverter system has various functions of a dimming, a constant current, and a circuit for safety, etc., while these functions are out of the scope in this study. In double transformers, the primary coils are connected parallel to the switched voltage of 2…”

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

“…LCD has been developed from battery-powered notebook to the monitor and TV. For the backlight of a large area panel, direct lighting backlight with the multi-lamps operated by a single inverter system has been introduced [1][2][3][4][5][6][7][8][9][10]. As the panel size increases, the backlight needs a high power resulting in difficulties in adjusting the brightness of backlight with a conventional dimming method.…”