Driving circuit for electro-optical device, driving method therefor, DA converter, signal line driving circuit, electro-optical panel, projection display device, and electronic equipment

摘要

First, when a switch portion is in an off-state, the first charging portion C1 charges parasitic capacitance CS. Second, a second charging portion C2 charges internal capacitance CD during the switch portion SW remains in the off-state. Third, the switch portion SW is turned on. Then, electric charges flow into the parasitic capacitance CS from the internal capacitance CD. Finally, the value of the voltage of the internal capacitance CD becomes equal to that of the voltage of the parasitic capacitance CS. Fourth, the switch portion SW is turned off. Then, the second charging portion C2 charges the internal capacitance CD again. Thence, the third step and the fourth step are repeated. Consequently, the voltage of the parasitic capacitance CS can be set at a desired value.