Patent ID: 7777739

Claim:
A display apparatus comprising: signal lines and scanning lines which are vertically and horizontally provided in rows on an insulation substrate; display elements which are formed in the vicinity of the respective intersections of said signal lines and said scanning lines; a scanning line drive circuit which drives said scanning lines; a signal line drive circuit which is formed on said insulation substrate and drives said signal lines; and a power supply voltage generation circuit which generates a second power supply voltage having a voltage level which is a substantially integral multiple of a first power supply voltage supplied from the outside based on said first power supply voltage, said signal line drive circuit having: an amplifier which amplifies an analog video signal; and a signal line selection circuit which selects a signal line to which said analog video signal amplified by said amplifier is supplied, and performs signal line writing, said amplifier being driven with said second power supply voltage, and said amplifier comprising, capacitor elements respectively connected between stages of three inverters which are cascade-connected, switching circuits each of which is provided in accordance with each of said three inverters and capable of switching whether input and output terminals of a corresponding inverter is short-circuited, a first impedance element connected between said second power supply line and a first power supply terminal of each of said odd number of inverters, and a second impedance element which is connected between a ground potential line and a second power supply terminal of each of said odd number of inverters, and has an impedance smaller than that of said first impedance element.