Liquid crystal display device

A liquid crystal display device comprising:

• a first substrate and a second substrate;
• a plurality of pixel electrodes provided on the first substrate;
• a counter electrode that is disposed opposite to each of the pixel electrodes and receives periodically oscillating clock pulses;
• a memory element electrically connected to the pixel electrode;
• a switching element electrically connected to the memory element;
• an image signal line that supplies an image signal to the switching element;
• a scan signal line that supplies a scan signal that controls the switching element;
• a capacitive element provided in the memory element;
• an output circuit having a control terminal to which the voltage held in the capacitive element is supplied;
• a display-voltage supply line that supplies a display voltage having a phase opposite to the clock pulses to the output circuit;
• and
• a non-display voltage line that supplies a non-display voltage in phase with the clock pulses to the output circuit,
• wherein the switching element is turned on to supply the image signal to the memory element so that the voltage is held in the capacitive element,
• the switching element is turned off to supply the voltage held in the capacitive element to the control terminal of the output circuit,
• when the image signal indicates the display state, the output circuit outputs the display voltage to the pixel electrode,
• when the image signal indicates the non-display state, the output circuit outputs the non-display voltage to the pixel electrode,
• when the image signal indicates the display state, the capacitive element holds a voltage that causes the output circuit to output the display voltage, and
• when the image signal indicates the non-display state, the capacitive element holds a voltage that causes the output circuit to output the non-display voltage.