| 摘要 |
A method for driving a light emitting diode (LED), which is operated at a prescribed constant driving voltage and a prescribed constant driving current such that the prescribed power consumption of the LED in a prescribed unit of time is the prescribed constant driving voltage times the prescribed constant driving current, comprises the step of supplying the LED with a driving pulse signal at a cycle equal to the prescribed unit of time, the driving pulse signal having a peak value equal to n times of current value of the prescribed constant driving current and a high voltage level duration of T/n', wherein T is the prescribed unit of time, n and n' both are positive integer excluding 0 and 1, and n/n'<=1, thereby the intensity of the light emitted from the LED can be increased by n times while the power consumption is kept unchanged.
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