DRIVE DEVICE OF COLOR LED BACKLIGHT

摘要

PROBLEM TO BE SOLVED: To provide a drive device of a color LED backlight capable of controlling an optical output of an LED regardless of a variation in an ambient temperature and easily changing characteristic data when replacing the LED. SOLUTION: The drive device includes: a voltage detecting unit for detecting a voltage applied to the color LED backlight; a temperature detecting unit for detecting a temperature of the color LED backlight; a control unit for controlling driving currents which respectively flow into color LED arrays of the color LED backlight according to the temperature detected by the temperature detecting unit and the voltage detected by the voltage detecting unit, by referring to previously set driving current values; and a multi-channel current source for adjusting amounts of the driving currents which respectively flow through the color LED arrays of the color LED backlight, in accordance with the driving current control by the control unit. COPYRIGHT: (C)2007,JPO&INPIT