Patent ID: 7675249
Filing Date: 2010-03-09
Classification: G09G,H05B

Abstract:
1. A drive apparatus for a backlight unit comprised of groups of LED (Light Emitting Diode) elements in which the plural LED elements are cascade-connected every three primary colors, the drive apparatus comprising: signal generating means for generating a signal having an arbitrary amplitude; adjustment means for adjusting light emission quantities of the groups of the LED elements on the basis of the signal which has been generated by the signal generating means; voltage applying means for applying a predetermined voltage every the groups of the LED elements; light emission quantity detecting means for detecting quantities of ray of light which are emitted from the groups of the LED elements in accordance with the voltage which has been applied by the voltage applying means; temperature detecting means for detecting temperature or temperatures of the groups of the LED elements; and control means for controlling the signal generating means on the basis of the light emission quantities which have been detected by the light emission quantity detecting means and the temperature or temperatures which has or have been detected by the temperature detecting means.