A liquid-droplet ejecting apparatus has a drawing mechanism and an ejection head. The laminated structure includes at least a first electrode layer, a dielectric layer and a second electrode layer stacked in this order. The gates of the first and second field effect transistors are hard wired together. Therefore, the user gets the impression that the element is capable of interacting and altering an image displayed on the display screen. These AD converters are well suited for a wide range of electronic applications, including over-load protection, current mode control, current sharing in digitally controlled switched-mode power supplies, power sensing, and implementation of power optimization methods in power management applications.