Power supply circuit with minimized power consumption

An electro-optical device having a plurality of pixels realized with an electro-optical material sandwiched between two mutually opposed substrates, comprising:

• a drive circuit that applies a driving signal to drive said plurality of pixels;
• and
• a power supply circuit that converts a first voltage into a second voltage and applying the second voltage to power said drive circuit, said power supply circuit comprising:
• two or more resistive elements that cause a development of a fractional voltage of said second voltage;
• a pair of first switching elements that are switched in order to enable or disable flow of a current through said two or more resistive elements;
• and
• a holding element that, when said pair of first switching elements are switched, holds the fractional voltage developed due to said two or more resistive elements, the fractional voltage held by the holding element being controlled so as to be substantially equal to a reference voltage.