Shift register and driving method thereof

An electronic apparatus having a display device, the display device comprising:

• a shift register having a level shifter which amplifies an amplitude of a clock signal, the level shifter comprising:
• a capacitor comprising a first electrode and a second electrode;
• a first inverter of which an input portion is connected to the first electrode of the capacitor;
• a second inverter of which an input portion is connected to an output portion of the first inverter electrically;
• a first switch connected to the second electrode of the capacitor;
• a second switch connected to a connection of the first switch and the second electrode of the capacitor;
• and
• a third switch connected to the input portion of the first inverter and the output portion of the first inverter,
• wherein the second switch inputs the clock signal to the second electrode of the capacitor,
• wherein the first switch inputs a reference potential to the second electrode of the capacitor, and
• wherein the first switch is controlled by a signal generated from an output pulse of the shift register to supply the reference voltage to the connection of the second switch and the second electrode of the capacitor.

An electronic apparatus having a display device, the display device comprising:

• a shift register having a level shifter which amplifies an amplitude of a clock signal, the level shifter comprising:
• a capacitor comprising a first electrode and a second electrode;
• a correction inverter of which an input portion is connected to the first electrode of the capacitor;
• an output inverter of which an input portion is connected to an output portion of the correction inverter electrically;
• a switch for setting a threshold value connected to the input portion of the correction inverter and the output portion of the correction inverter;
• a switch for receiving a clock signal connected to the second electrode of the capacitor;
• and
• a reference switch connected to a connection of the switch for receiving a clock signal and the second electrode of the capacitor to supply a reference voltage to the connection of the switch for receiving a clock signal and the second electrode of the capacitor,
• wherein the switch for receiving a clock signal inputs the clock signal to the second electrode of the capacitor,
• wherein the reference switch inputs a reference potential to the second electrode of the capacitor, and
• wherein the switch for setting a threshold value is controlled by a signal generated from an output pulse of the shift register.