Patent ID: 8198822
Filing Date: 2012-06-12
Classification: G09G,H05B,Y02B

Abstract:
1. A light source driving apparatus for driving at least one light source, the light source driving apparatus comprising: a boosting part which boosts an input voltage received from an input part and generates a driving voltage; a boosting transistor which controls an operation of the boosting part; a rectification part connected between the boosting part and an output part and which transmits the driving voltage to the output part; an integrated circuit which generates a first gate signal which controls the boosting transistor and a second gate signal which controls a switching transistor connected with the at least one light source; a protection circuit which generates a protection signal which controls a voltage level of the first gate signal according to an output current of the boosting transistor and controls a voltage level of the second gate signal according to at least one of the protection signal and a voltage at a node between the rectification part and the output part.