Patent ID: 7924262

Claim:
A light source driving apparatus, comprising: a controller which outputs a first control signal to drive a plurality of light sources in a normal-luminance mode and a second control signal to drive the light sources in a low-luminance mode; a first driver which generates a first driving signal and a plurality of second driving signals based on a first voltage in response to the first control signal, provides the first driving signal to anode terminals of the light sources and respectively provides the second driving signals to cathode terminals of the light sources in the normal-luminance mode; and a second driver which includes a first switching element which is turned on in response to the second control signal, a second switching element which provides a second voltage lower than the first voltage to the anode terminals of the light sources when the first switching element is turned on a third switching element which provides a ground voltage to the cathode terminals of the light sources in response to the second control signal in the low-luminance mode, wherein the controller deactivates an operation of the first driver when an operation of the second driver is activated.