| 摘要 |
The present invention provides a liquid crystal display device having an LED drive circuit which can control a dimming control signal even with a pulse width of several tens musec or less. The LED drive circuit includes a booster circuit, a first stage current mirror circuit generating a reference current, a second stage current mirror circuit generating a driving current from the reference current, a light-emitting diode column having a light-emitting diode supplied with the driving current, and a dimming control circuit controlling the turning on and off of the light-emitting diode based on a dimming control signal.
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