Abstract: A light source driving apparatus for time-dividing and driving a plurality of light sources, a display device having the same, and a driving method thereof are provided. The light source driving apparatus includes a light source module including a plurality of light sources; a light source driver which outputs a driving current to drive the light sources; and a switch which selectively feeds the driving current to the light sources respectively and sequentially drives the plurality of the light sources. The light source driver outputs a low-level driving current to drive the light sources, and thus the driving speed, the system efficiency and the optical power can be increased and the manufacturing cost can be reduced.

Abstract: A circuit and a method for driving a light source are provided. The circuit for driving a light source according to exemplary embodiments of the present invention includes a converting unit which supplies an electric current required for driving a light source and a converter controller which detects the current output from the converting unit and compares the detected current to a reference current to control the current of the converting unit based on the comparison result. Also included are a light source driver which receives the controlled current from the converting unit and converts the current into a pulse current to drive a light source and a pulse signal generator which generates a pulse signal to be applied to the light source driver.

Abstract: Provided are a circuit and method for detecting an electric current which are capable of controlling the amount of electric current by detecting a load current of a current source using a switching type converter when controlling the load current of the current source which requires a high current, and compensating electric current flowing in the load. Accordingly, damage to the overall circuit is reduced compared to a related art method of detecting current using a resistor when detecting the load current of the current source with a high current, the amount of heat generated is reduced compared to such related art method, the overall efficiency of the current source device is enhanced and manufacturing costs are decreased.