Patent ID: 7595785
Filing Date: 2009-09-29
Classification: G09G,H05B,Y02B

Abstract:
1. A driving device for at least one light source, comprising: a temperature sensor operable for sensing a surrounding temperature of the light source and outputting a first control signal in response to the sensed temperature; a signal output portion operable for receiving a second control signal based on a first brightness control signal applied from an external source; changing the second control signal based on the first control signal; and outputting the changed second control signal; and an inverter controller operable for receiving the changed second control signal and outputting a third control signal based on the changed second control signal, wherein the first control signal becomes a low level when the surrounding temperature of the light source is less than a predetermined temperature of the light source, and the second and third control signals are adjusted based on the first control signal, and the second control signal becomes a low level when the first control signal is a low level, and the third control signal is ramped up to a high level for driving the at least one light source.