Driving circuit and electronic device

A driving circuit for driving an electro-optical panel, the electro-optical panel including a first scan line, a second scan line, a plurality of data lines, and a plurality of pixel circuits, each of the plurality of pixel circuits being provided at corresponding intersections of the first and second scan lines and the plurality of data lines, each of the plurality of pixel circuits including a pixel electrode, a common electrode, a first transistor that is electrically connected to one of the plurality of data lines and is controlled by the first scan line, and a second transistor that is electrically connected between the first transistor and the pixel electrode and is controlled by the second scan line, the driving circuit comprising:

• a data line driving circuit that supplies a gray-scale signal to the plurality of data lines;
• a first voltage generation circuit that supplies a power supply voltage to the data line driving circuit;
• a scan line driving circuit that supplies a scan signal to the first and second scan lines;
• and
• a second voltage generation circuit that supplies a power supply voltage to the scan line driving circuit,
• wherein, during a first period of alternately causing the first transistor and the second transistor to enter an OFF state, the first voltage generation circuit is stopped and the second voltage generation circuit is operated, and
• during a second period of simultaneously causing the first transistor and the second transistor to enter an ON state, the first voltage generation circuit and the second voltage generation circuit are operated.

A driving circuit for driving an electro-optical panel, the electro-optical panel including a plurality of scan lines, a plurality of data lines, and a plurality of pixel circuits, each of the plurality of pixel circuits including a plurality of pixel elements, the plurality of pixel circuits being provided at corresponding intersections of the plurality of scan lines and the plurality of data lines, the driving circuit comprising:

• a data line driving circuit that supplies a gray-scale signal to the plurality of data lines;
• a regulator that stabilizes a supplied power supply voltage and supplies the stabilized power supply voltage to a smoothing capacitor and the data line driving circuit;
• a switching circuit that switches a connection state of a plurality of circuit elements that constitute the regulator;
• and
• a control circuit that controls the switching circuit,
• wherein when the gray-scale signal is supplied to the plurality of pixel elements, the control circuit controls the switching circuit to switch the connection state of the plurality of circuit elements that constitute the regulator so as to set a voltage stabilization capability of the regulator to a predetermined level, and
• wherein when the gray-scale signal is not supplied to the plurality of pixel elements, the control circuit controls the switching circuit to switch the connection state of the plurality of circuit elements that constitute the regulator so as to set the voltage stabilization capability of the regulator to a level lower than the predetermined level or to stop an operation of the regulator.