A panelized complex polyhedron structure can be constructed quickly and inexpensively from a plurality panels. The display luminance detection section detects an actual display luminance of the first display section on the basis of a detected value of the illuminance detection sensor. The signal lead and the busbar lead are spaced apart from the major surface of the semiconductor chip. The latch communicates the input signal to the output terminal in response to the circuit not being in a sleep mode and in response to the circuit being in the sleep mode, furnishes a second signal to the output terminal indicative of the value.