Ion microscope methods and systems are disclosed. Specifically, under the embodiments of the present invention, a plurality of active lighting panels is stacked in successive fashion within a display. The gain compensator compensates for the variable VCO gain by generating a charge pump reference current that is based on the same capacitor control signal that controls the fixed capacitors in the LC circuit. The Zener diode is formed in the same doped region of the substrate as the trigger of the switchable device. A plurality of engaging hooks provided in the outer edge of the belt cover come off engaging slots located in the vehicle body at the instant when the tension load of the support belt reaches a predetermined value.