The present invention provides a liquid crystal display device comprising a liquid crystal display panel, a backlight having at least one light-emitting diode, and an LED drive circuit for driving the at least one light-emitting diode. The LED drive circuit includes a constant voltage circuit for controlling a voltage outputted from an output terminal in such a manner that a voltage inputted to a feedback terminal becomes a constant voltage, and means for driving the at least one light-emitting diode connected to the output terminal of the constant voltage circuit by a constant current. The LED drive circuit has at least one diode provided in a feedback path lying between the output terminal of the constant voltage circuit and the feedback terminal.