An LED backlight includes a light emitting unit, a driver, a current divider, and a power supply unit. The lighting unit includes a plurality of LEDs connected in series. The driver is connected in series with the LEDs and configured to control driving of the light emitting unit. The current divider is connected in parallel to the driver of a series circuit including the light emitting unit and the driver. The power supply unit is configured to apply a voltage to the series circuit.