A line-sequential driving display that displays an image by exciting phosphor disposed on the rear surface of a face plate, transmitting light emitted from the excited phosphor through the face plate, and emitting the light from the front surface of the face plate. The composite substrate, in which the plurality of terminal connection substrates is mounted on the single side and a plurality of electronic components is mounted on at least the single side, is divided at a location where the module substrates are to be cut from the composite substrate. 01-10 mgl of sodium and 25-150 mgl of magnesium, the rest being water. Power management circuit communicates with the motion sensors and display elements, examples including light emitting diodes and motorized drive devices.