An image display device of the present invention includes a liquid crystal display panel, a resin frame for attaching the liquid crystal display panel to a front cabinet and a circuit board that are arranged inside a casing. The ferroelectric memory device includes a semiconductor substrate having first and second transistors, an interlayer insulating layer covering the first and second transistors, and first and second ferroelectric capacitor sequentially stacked on the interlayer insulating layer. The target-value managing section stores an operation state of the luminaire and, when the operation section is operated, calculates an operation target value on the basis of the stored operation state of the luminaire and updates the operation state to the operation target value serving as an operation state of the luminaire after the operation.