Liquid crystal display device capable of reducing afterimage attributed to change in dielectric constant at time of response of liquid crystals

An active matrix type liquid crystal display device comprising:

• a TFT substrate on which a plurality of scanning lines and a plurality of signal lines are arranged so as to intersect each other and which has a pixel electrode, a memory capacitance and first, second and third TFT elements provided at each intersection of the scanning lines and the signal lines;
• an opposite substrate having an opposite electrode;
• and
• a liquid crystal layer held between the TFT substrate and the opposite substrate,
• gate electrodes of the first, second and third TFT elements being connected to the scanning lines,
• the first TFT element controlled to determine whether or not electric charges are supplied from the signal line to the memory capacitance,
• the second TFT element controlled to determine whether or not the electric charges stored in the memory capacitance are supplied to the pixel electrode,
• the third TFT element controlled to determine whether or not the pixel electrode is connected to a wiring line of a specified voltage, and
• the first, second and third TFT elements being comprised of one n-type MOS element and two p-type MOS elements or constructed of one p-type MOS element and two n-type MOS elements.